openinverter.org wiki - User contributions [en]

Batteries

2023-09-16T15:41:38Z

EV Builder:

== Introduction ==
There are a wide variety of battery chemistries available for use as the main traction battery of an EV. To use each chemistry safely, and to ensure an adequate service life from the battery pack it is important to understand the requirements for the chemistry you are using. Failure to do so may lead to premature or catastrophic failure of the pack.

Good pack design will allow for a nominal amount of abuse. People make mistakes and the pack should allow a margin for safety - and for longevity!

== Battery pack specification ==
When deciding on your battery pack, here are some basic parameters to consider:

=== Capacity (kWh) ===
'''How far do you want to go?''' A standard car conversion will need a kWh for each 3, maybe 4 miles of range (very approximately). For a middleweight motorcycle, a kWh should give around 9 miles. Your mileage may vary, ''as they say.''

=== Voltage (V) ===
'''How fast do you want to go?''' The pack voltage defines the maximum speed your motor can spin. Motors are usually specified with "KV" - or RPM-per-volt. Check the KV of your motor and how fast it needs to spin to get your desired top speed. e.g. if you need 3,000 RPM from a 25 KV motor then your pack voltage needs to be 3,000 / 25 = 120 V. The exact number of cells in series you need depends on the cell design, but 3.8 V for Li-ion and 3.2 V for LiFePO4 is a reasonable guess.

=== Maximum current (A) ===
'''How quickly do you want to accelerate?''' Your motor's maximum power will be specified in kW. To estimate your maximum current draw, divide the peak power by the battery voltage. e.g. a 30 kW motor with a 120 V battery pack will pull 30,000 / 120 = 250 A. The higher the current rating of the cells, the heavier they will be for a given capacity. Ideally, you want "enough" current capacity for full throttle acceleration, but no more. You can put cells in parallel to double the current rating of your pack (which of course will half the voltage). Running cells in parallel is easy, but don't attempt to parallel battery packs unless you really know what you are doing. It's complicated<ref>https://www.orionbms.com/manuals/pdf/parallel_strings.pdf (Backup: [https://web.archive.org/web/20210322000103/https://www.orionbms.com/manuals/pdf/parallel_strings.pdf Web Archive])</ref>.

=== Mass (kg) ===
'''Can your vehicle carry the weight?''' You'll need to keep the kerb weight within the original design limits. For a car, your pack could be a few hundred kg. For a motorcycle, likely less than 100 kg. This is a huge variable - and each new generation of battery tech seems to be a little lighter. For older EV or hybrid batteries, you can reckon on approximately 10 kg/kWh. Nissan Leaf batteries are relatively light (7.5 kg/kWh). With the latest technology (e.g. Kokam pouch cells or 18650s), you can get this down to 5-6 kg/kWh.

=== Volume (L) ===
'''Will it fit?''' Batteries are bulky. They are getting smaller, but finding enough space might be your biggest challenge. You could be looking at over 5 L/kWh for older EV or hybrid batteries. Current state-of-the-art is the Tesla Model 3, which gets this down to 2.5 L/kWh by using 2170 cylindrical cells.

There is much, much more to battery design than this (e.g. maximum charge rate, terminations, cooling, clamping), but the above should help work out which options will or won't work for your project...

== Cell chemistry ==

=== Lithium Iron Phosphate (LiFePO4) ===
Lithium Iron Phosphate (also known as LFP, or LiFePO4) batteries offer a good compromise between safety, energy density and ease of use for DIY conversions. They are available in a number of formats, commonly pouch cells, prismatic cells and cylindrical cells.

==== LiFePO4 pouch cells ====
The majority of this content is drawn from this thread <ref>[https://web.archive.org/web/20210124061443/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900 https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900] (Backup: [https://web.archive.org/web/20210124061443/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900 Web Archive])</ref> discussing the use of the A123 20Ah pouch cell. However, many of the general points apply equally to other similar pouch cells.

===== General build requirements =====
Pouch cells are vulnerable to damage from debris, and must be held in compression (see the datasheet for your battery, but 10-12 psi is recommended for the A123 pouch cells as a guide). A rigid container capable of preventing damage and providing compression is therefore required. Be aware the cells expand and contract in use, so allowance for this must be included in the structure of the case.

The pouch cells should be separated to prevent abrasion between cells, and also to avoid the development of hot spots. Prebuilt modules from A123 systems had thin foam sheets or heatsinks between each cell. Be sure to avoid any debris that could rub on the pouch surface, particularly if using recycled cells.

Mylar, 'Fish paper'<ref>https://www.americanmicroinc.com/fish-paper/ (Backup: [https://web.archive.org/web/20221016210644/https://www.americanmicroinc.com/electrical-insulator-materials/fish-paper/ Web Archive])</ref> or a compliant foam<ref>https://www.rogerscorp.com/elastomeric-material-solutions/poron-industrial-polyurethanes (Backup: [https://web.archive.org/web/20220604010733/https://rogerscorp.com/elastomeric-material-solutions/poron-industrial-polyurethanes Web Archive])</ref> may be appropriate materials to serve this purpose. This material should not be flammable. If the material is heat insulating, it is important to address thermal management.

===== Compression =====
Compression is required to prevent premature failure of the cell. Without compression electrolyte will become unevenly distributed, causing current gradients in the cell and uneven heating. Local temperatures can become high enough to form gas formation leading to cells 'puffing up' even when the pack is otherwise held within temperature and voltage constraints. This will be exacerbated in packs with otherwise poor thermal management. Compression forces gas generated to the margins of the cell, outside of the cell stack, minimising its effect cell performance. Gas in the middle cells will create a dead space which does not store or release energy.

There is ~1% expansion through a discharge cycle. As the cell ages, the nominal cell thickness can grow by 3-5%. For A123 cells the ideal pressure is between 4 and 18psi with the ideal pressure being ~12psi. Maintaining 12psi can increase the life by 500 cycles over that of 4 or 18psi

There is some suggestion that in uses where 1C is never exceeded compression ''may'' not be required.

Highly rigid endplates with a mechanism to allow for a limited degree of expansion (e.g. steel bands) are considered an effective solution to this challenge.

It should be noted that compression is a challenge specific to pouch cells. Cylindrical cells are designed to maintain their own compression within the cell's electrode stack by their design.

This thread provides more information and experimentation relating to pack compression: <nowiki>https://endless-sphere.com/forums/viewtopic.php?f=14&t=52244</nowiki>

===== Pouch Cell Pack Design Examples =====
<nowiki>*</nowiki>placeholder*

===== Notes regarding recycled pouch cells =====
Pouch cells are somewhat fragile, and breaching the insulation is not difficult, especially in a cells removed from existing packs and repurposed. If the pouch has had their poly-layers compromised you may see a number of faults:
* Black spots around the perimeter of the cell indicate electrolyte leakage
* Voltage on the outside of the bag. Note that microvoltage between the pouch and the electrode is normal (and due to a capacitive effect).
While the majority of these cells should no longer be in the market, a significant number of faulty cells made it back into the 'greymarket' in around 2013. These cells had misaligned tabs which can also lead to isolation failures between the tab and the pack. These cells should be avoided, particularly in high demand applications.

===== Situations likely to cause pouch cell failure =====
''Taken directly from wb9k's''<ref name=":0">https://endless-sphere.com/forums/memberlist.php?mode=viewprofile&u=33107 </ref> ''post on endless sphere in the A123 thread''<ref name=":1">https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761 (Backup: [https://web.archive.org/web/20210116021026/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761 Web Archive])</ref>
# '''Overcharge'''. Any extended time above 3.8 Volts will generate enough heat and electrochemical activity to puff a cell, especially one that is improperly compressed.
# '''Overdischarge followed by charge'''. Any A123 cell that has been pulled low enough to come to rest at <300 mV should be immediately scrapped. The published number for that is 500 mV, but the real figure is closer to 300, so that's a "safety buffer" if you will. Below this Voltage, the Cu electrodes start to dissolve into the electrolyte. When charge is applied, the Cu forms dendrites that puncture the separator layer, forming an internal short in the cell. This can puff a cell in a hurry---the more charge current on tap, the worse it's prone to be.
# '''Driving a cell negative'''. I've neglected to mention this before, but it is a possibility. I don't know much about the specific mechanism at this time.
# '''Malfunctioning or misinformed electronics'''. This is the most common cause of all of the above in my experience. At this stage of the game, it is critical for YOU to understand how your BMS functions on at least a cursory level. Choose your BMS very carefully and periodically verify that it is operating properly. They're not all created equal. Make sure V sense lines are securely connected and free of corrosion. Just because your BMS says there was never a problem doesn't necessarily make it so. Avoid harnesses or ribbon cables between multiple modules if possible--they are problematic wherever they are used in any mobile electronics.
# '''Exposure to or generation of sufficient heat'''. I don't know exactly at what temperature gas formation begins in the electrolyte, but we spec a max storage temp of 80 (or 85?) degrees C and I suspect this is the reason. The hotter, the puffier--to a point. This is why soldering tabs poses a real hazard to cell health. If you feel you must solder, sink or blow the heat away from the body of the cell. Use a big iron that can make sufficient local heat quickly, before the whole mass of the cell gets hot. You might even get the cell warm enough to melt separator if not careful.
# '''No compression, not enough compression, improperly distributed compression'''. This is a pack/module design issue. Apply 10, maybe 15 psi to your cell stack end to end and then band snugly and evenly. Use hard endplates of some sort--never wrap cells directly or allow their shape to become distorted. Protect all areas of the pouch from impact damage. This obviously does not apply to cylindrical cells.

==== LiFePO4 prismatic cells ====
<nowiki>*</nowiki>placeholder*

==== LiFePO4 cylindrical cells ====
<nowiki>*</nowiki>placeholder*

==== LiFePO4 cell ageing ====
''Derived (barely paraphrased) from wb9k's''<ref name=":0" /> ''post on endless sphere in the A123 thread''<ref name=":1" />

Capacity loss is caused by the lithium that was available for storage becoming permanently plated on the cathode. Being unable to move within the cell it is no longer available to store energy. The impact of this plating is greater than the amount of lithium 'lost' to plating because not only is the lithium no longer available, it is also preventing access to that part of the cathode meaning Li that can still move has to take a longer path to reach the cathode. Lithium plating is one cause of increased cell resistance (there are others), a sign of worsening cell health.

There is no linear relationship between actual capacity loss and impedance rise. However some cell defects will also increase impedance.

Increasing cell resistance may cause a number of symptoms which may be confused with High Self Discharge.<ref>https://earthshipbiotecture.com/a-lithium-ion-battery-primer/ (Backup: [https://web.archive.org/web/20220524233332/https://earthshipbiotecture.com/a-lithium-ion-battery-primer/ Web Archive])</ref>
# Elevated Peukert Losses. As more energy per amount of current through the cell is lost as heat, the cells useable capacity decreases. So the apparent capacity loss is higher than the actual capacity loss of cycleable lithium. When used in low current applications (e.g. solar energy storage) the actual and apparent decrease in capacity will be small. In high current draw applications (like EV traction packs), the Peukert loss increases proportionally, so the apparent capacity loss increases much faster than the actual capacity loss.
# Greater voltage excursion under the same load. Due to increased cell resistancethe voltage will sag further under the same load than a cell in optimal condition. The inverse is also true, the voltage will be higher for the same amount of charging current applied. The cell will then rebound to a voltage further from the loaded and charging voltages. This, obviously, can look like high self discharge but is a different phenomenon.
# Absolute maximum current decrease.
Elevated impedance causes a more complex constellation of symptoms, some of which may be easy to confuse with High Self Discharge (HSD). Ohm's law (E=I/R) holds the key to understanding here.

'''1) Elevated Peukert losses.''' Because more energy per unit of current through the cell is lost as heat, less of the cell's capacity is actually USABLE. Thus, apparent capacity loss can be significantly greater than actual capacity loss caused by the loss of cycleable Li alone. In low current applications, the two numbers will be close together. In high current applications, Peukert losses increase in proportion, so apparent loss of capacity breaks further and further away from actual capacity loss as current increases.

'''2) Greater voltage excursion under the same load.''' Elevated resistance across the cell means that voltage will sag more under the same load than it did when the cell was healthier. Conversely, voltage will rise higher with the same amount of applied charge current than it did when it was healthier. At the same time, rebound/settling voltages will be further away from loaded/charging voltages. In other words, the cell will rebound to a voltage further away from loaded voltage, all else being equal. Similarly, voltage will settle farther from the charge voltage with the same charge applied. This can give the illusion of elevated self-discharge, but the phenomenon is actually not the same thing. Again, the greater the charge and load currents, the greater the effect becomes.

'''3) Absolute max current decreases.''' Because the cell's series resistance is elevated, the maximum possible current through the cell is decreased.

Just to confuse things further, there can be many factors that lead to impedance rise. Some are related to Li plating, others are not.

=== Lithium-ion ===
Lithium-ion (Li-ion) batteries have a greater energy density than Lithium Iron Phosphate batteries, but have more challenging needs to use safely. The ideal operating range of Li-ion batteries is between +15 and +45°C. The upper limit of temperature is particularly important as Li-ion batteries experience thermal runaway - an unstoppable chain reaction that can occur in milliseconds releasing the stored energy in the cell. This can produce temperatures of 400°C and a fire that is extremely difficult to put out. Thermal runaway can start as low as 60°C and becomes much more likely at 100°C

Risk factors for thermal runaway:
* Short Circuits - either internally or externally
* Overcharging
* Excessive current draw or when charging

==== Li-ion pouch cells ====
Kokam produce high-performance Li-ion pouch cells<ref>https://kokam.com/en/product/cell/lithium-ion-battery (Backup: [https://web.archive.org/web/20220423100132/https://kokam.com/en/product/cell/lithium-ion-battery Web Archive])</ref>. These combine relative ease of use and pack construction with performance close to cylindrical cells.

==== Li-ion 18650 and other cylindrical cells ====
Cylindrical cells are favoured by Tesla, and are probably the main reason why their cars achieve such excellent performance. They are light, compact, powerful and expensive. Unfortunately, cylindrical cells are difficult (and potentially dangerous) to use in DIY conversions. There are two good reasons for this: thermal management and cell configuration.

As stated above, Li-ion cells are prone to thermal runaway. So you need perfect battery and thermal management to ensure that no cell ever exceeds the critical voltage or temperature. If this happens, a cell can short-circuit internally, releasing a lot of energy - potentially explosively. Furthermore, the individual cells are small, so need to be arranged in parallel. In the case of the Tesla Model S 85kW pack, there are 74 cells in parallel. Imagine if one of those cells fails and becomes short circuited internally. You now have 73 very high power cells all feeding in to that short circuit...

In fact, you don't have to imagine: you can watch this famous video instead (courtesy of Rich Rebuilds).

<youtube>WdDi1haA71Q</youtube>

[[File:Chemvolt.png|border|left|frameless|600x600px|Cell voltages / Type]]

== OEM modules ==
Using an OEM module means a lot of the difficulties and safety issues associated with battery design are taken care of e.g. cooling, clamping, etc.

Here is a handy list of OEM modules:
{| class="wikitable sortable mw-collapsible"
|+
!Manufacturer
!Model
!Capacity (kWh)
!Weight (kg)
!w (mm)
!d (mm)
!h (mm)
!Gravity (kg/kWh)
!Volume (L/kWh)
!Voltage (V)
!Current (cont A)
!Current (peak A)
!Cell arrangement
!Cell type
!Chemistry
|-
|Tesla
|Model S 85kWh
|5.3
|26
|690
|315
|80
|4.9
|3.3
|22.8
|500
|750
|74p6s
|18650
|Li-ion
|-
|Tesla
|Model S 100kWh
|6.4
|28
|680
|315
|80
|4.4
|2.7
|22.8
|
|870
|86p6s
|18650
|Li-ion
|-
|Tesla
|Model 3 LR (inner)
|19.2
|98.9
|1854
|292
|90
|5.2
|2.5
|91.1
|
|971
|46p25s
|2170
|Li-ion
|-
|Tesla
|Model 3 LR (outer)
|17.7
|86.6
|1715
|292
|90
|4.9
|2.5
|83.9
|
|971
|46p23s
|2170
|Li-ion
|-
|Tesla
|Model 3 SR (inner)
|13.0
|58.9
|1385
|326
|90
|
|3.7
|91.1
|
|603
|31p24s
|2170
|Li-ion
|-
|Tesla
|Model 3 SR (outer)
|12.0
|58.9
|1380
|344
|90
|
|3.8
|83.9
|
|603
|31p24s
|2170
|Li-ion
|-
|Tesla
|Model 3 [https://moneyballr.medium.com/tesla-lfp-model-3-battery-design-bcf559ea1cc1 LFP] (inner)
|13.38
|86
|1860
|323
|81
|6.4
|
|83
|[https://lifepo4.com.au/shop/cells-lifepo4/catl/catl161ah-tesla-3-2v-lfp-lithium-iron-phosphate-battery/ 161]
|
|23s
|Prismatic
|LiFePo4
|-
|Tesla
|Model 3 [https://moneyballr.medium.com/tesla-lfp-model-3-battery-design-bcf559ea1cc1 LFP] (outer)
|15.07
|93.48
|1948
|323
|81
|6.2
|
|93.5
|[https://lifepo4.com.au/shop/cells-lifepo4/catl/catl161ah-tesla-3-2v-lfp-lithium-iron-phosphate-battery/ 161]
|
|25s
|Prismatic
|LiFePo4
|-
|Calb
|4S3P
|2.19
|12
|355
|151
|108
|5.5
|2.6
|14.6
|
|900
|3p4s
|Pouch
|Li-ion
|-
|Calb
|6S2P
|2.19
|12
|355
|151
|108
|5.5
|2.6
|22.2
|
|600
|2p6s
|Pouch
|Li-ion
|-
|Chevrolet
|Volt 2012
|4
|38
|470
|180
|280
|9.5
|5.9
|88.8
|
|676
|3p24s
|Pouch
|Li-ion
|-
|BMW
|i3 60Ah
|2
|13
|410
|310
|150
|6.5
|9.5
|28.8
|210
|350
|2p8s
|Prismatic
|Li-ion
|-
|BMW
|i3 94Ah
|4.15
|28
|410
|310
|150
|6.7
|4.6
|45.6
|
|409
|12s
|Prismatic
|Li-ion
|-
|BMW
|i3 120Ah
|5.3
|28
|410
|310
|150
|5.3
|3.6
|45.6
|
|360
|12s
|Prismatic
|Li-ion
|-
|BMW
|[[BMW Hybrid Battery Pack|PHEV 34Ah]]
|2.0
|13.05
|368
|178
|102
|6.525
|3.34
|59.0
|
|
|16s
|Prismatic
|Li-ion
|-
|Jaguar
|iPace
|2.5
|12
|340
|155
|112
|4.8
|2.4
|10.8
|720
|1200
|4p3s
|Pouch
|Li-ion
|-
|LG
|4P3S
|2.6
|12.8
|357
|151
|110
|4.9
|2.3
|11
|
|
|4p3s
|Pouch
|Li-ion
|-
|Mitsubishi
|Outlander
|2.4
|26
|646
|184
|130
|10.8
|6.4
|60
|
|240
|16s
|
|Li-ion
|-
|Nissan
|[https://www.youtube.com/watch?v=hpgv-dY-q6M Leaf 24kWh]
|0.5
|3.65
|300
|222
|34
|7.3
|4.5
|7.2
|130
|228
|2p2s
|Pouch
|Li-ion LMO
|-
|Nissan
|Leaf 30kWh
|1.25
|
|300
|222
|34
|
|3.6
|14.4
|
|
|2p4s
|Pouch
|Li-ion
|-
|Nissan
|Leaf 40kWh
|1.6
|8.7
|300
|222
|68
|5.4
|2.8
|14.4
|
|314
|2p4s
|Pouch
|Li-ion NMC
|-
|Nissan
|Leaf 62kWh
|2.58
|
|
|
|
|
|
|14.4
|
|
|3p4s
|
|Li-ion
|-
|Porsche
|Taycan
|2.77
|12.7
|390
|155
|115
|4.9
|2.3
|21.9
|360
|600
|2p6s
|Pouch
|Li-ion
|-
|PSA/Opel
|[https://web.archive.org/web/20230615115914/https://www.fev-consulting.com/fileadmin/user_upload/Consulting/Smart_cost_reduction/Peugeot_E208_HV_battery.pdf Peugeot E-208, Corsa E]
|2.73
|12.7
|390
|150
|115
|4.6
|2.5
|21.9
|
|
|2p6s / 1p6s
|Prismatic
|Li-ion
|-
|Volvo
|XC90 T8
|2.01
|12.1
|300
|180
|150
|6.0
|4.0
|59.2
|170
|340
|16s
|
|Li-ion
|-
|VW
|[[VW Hybrid Battery Packs|Passet GTE]]
|2.48
|23.4 (with cooler plate)
10.8kg single
|410 (C/P)
355 (S)
|235 (C/P)
150 (S)
|150 (C/P)
108 (S)
|9.4
|5.5
|88.8
|
|
|24s
|Prismatic
|Li-ion
|-
|VW
|[[VW Hybrid Battery Packs|Golf GTE]]
|1.086
|9.8
|355
|152
|110
|9.02
|5.5
|44
|
|
|12s
|Prismatic
|Li-ion
|-
|VW
|Touareg 14,1 kWh
|1.76
|12.3
|385
|150
|108
|7.0
|3.5
|45.25
|
|
|13s
|Prismatic
|Li-ion
|-
|VW
|id3/id4 55kWh, 62kWh
|6.85
|32
|225
|590
|110
|4.67
|2.13
|44.4
|
|
|12s2p
|
|
|-
|VW
|id3/id4 82kWh
|6.85
|32
|225
|590
|110
|4.67
|2.13
|29.6
|
|
|8s3p
|
|
|-
|Toyota
|Prius Prime
|1.76
|16.9
|597
|152
|121
|9.6
|6.24
|70.3
|
|
|
|
|
|}

== References ==
<references />
[[Category:Battery]]

Batteries

2023-09-16T15:41:17Z

EV Builder:

File:Chemvolt.png

2023-09-16T15:40:09Z

EV Builder:

(source: NXP datasheet)

Batteries

2023-09-11T20:47:57Z

EV Builder: added taycan corrected peugoet

== Introduction ==
There are a wide variety of battery chemistries available for use as the main traction battery of an EV. To use each chemistry safely, and to ensure an adequate service life from the battery pack it is important to understand the requirements for the chemistry you are using. Failure to do so may lead to premature or catastrophic failure of the pack.

Good pack design will allow for a nominal amount of abuse. People make mistakes and the pack should allow a margin for safety - and for longevity!

== Battery pack specification ==
When deciding on your battery pack, here are some basic parameters to consider:

=== Capacity (kWh) ===
'''How far do you want to go?''' A standard car conversion will need a kWh for each 3, maybe 4 miles of range (very approximately). For a middleweight motorcycle, a kWh should give around 9 miles. Your mileage may vary, ''as they say.''

=== Voltage (V) ===
'''How fast do you want to go?''' The pack voltage defines the maximum speed your motor can spin. Motors are usually specified with "KV" - or RPM-per-volt. Check the KV of your motor and how fast it needs to spin to get your desired top speed. e.g. if you need 3,000 RPM from a 25 KV motor then your pack voltage needs to be 3,000 / 25 = 120 V. The exact number of cells in series you need depends on the cell design, but 3.8 V for Li-ion and 3.2 V for LiFePO4 is a reasonable guess.

=== Maximum current (A) ===
'''How quickly do you want to accelerate?''' Your motor's maximum power will be specified in kW. To estimate your maximum current draw, divide the peak power by the battery voltage. e.g. a 30 kW motor with a 120 V battery pack will pull 30,000 / 120 = 250 A. The higher the current rating of the cells, the heavier they will be for a given capacity. Ideally, you want "enough" current capacity for full throttle acceleration, but no more. You can put cells in parallel to double the current rating of your pack (which of course will half the voltage). Running cells in parallel is easy, but don't attempt to parallel battery packs unless you really know what you are doing. It's complicated<ref>https://www.orionbms.com/manuals/pdf/parallel_strings.pdf (Backup: [https://web.archive.org/web/20210322000103/https://www.orionbms.com/manuals/pdf/parallel_strings.pdf Web Archive])</ref>.

=== Mass (kg) ===
'''Can your vehicle carry the weight?''' You'll need to keep the kerb weight within the original design limits. For a car, your pack could be a few hundred kg. For a motorcycle, likely less than 100 kg. This is a huge variable - and each new generation of battery tech seems to be a little lighter. For older EV or hybrid batteries, you can reckon on approximately 10 kg/kWh. Nissan Leaf batteries are relatively light (7.5 kg/kWh). With the latest technology (e.g. Kokam pouch cells or 18650s), you can get this down to 5-6 kg/kWh.

=== Volume (L) ===
'''Will it fit?''' Batteries are bulky. They are getting smaller, but finding enough space might be your biggest challenge. You could be looking at over 5 L/kWh for older EV or hybrid batteries. Current state-of-the-art is the Tesla Model 3, which gets this down to 2.5 L/kWh by using 2170 cylindrical cells.

There is much, much more to battery design than this (e.g. maximum charge rate, terminations, cooling, clamping), but the above should help work out which options will or won't work for your project...

== Cell chemistry ==

=== Lithium Iron Phosphate (LiFePO4) ===
Lithium Iron Phosphate (also known as LFP, or LiFePO4) batteries offer a good compromise between safety, energy density and ease of use for DIY conversions. They are available in a number of formats, commonly pouch cells, prismatic cells and cylindrical cells.

==== LiFePO4 pouch cells ====
The majority of this content is drawn from this thread <ref>[https://web.archive.org/web/20210124061443/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900 https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900] (Backup: [https://web.archive.org/web/20210124061443/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=900 Web Archive])</ref> discussing the use of the A123 20Ah pouch cell. However, many of the general points apply equally to other similar pouch cells.

===== General build requirements =====
Pouch cells are vulnerable to damage from debris, and must be held in compression (see the datasheet for your battery, but 10-12 psi is recommended for the A123 pouch cells as a guide). A rigid container capable of preventing damage and providing compression is therefore required. Be aware the cells expand and contract in use, so allowance for this must be included in the structure of the case.

The pouch cells should be separated to prevent abrasion between cells, and also to avoid the development of hot spots. Prebuilt modules from A123 systems had thin foam sheets or heatsinks between each cell. Be sure to avoid any debris that could rub on the pouch surface, particularly if using recycled cells.

Mylar, 'Fish paper'<ref>https://www.americanmicroinc.com/fish-paper/ (Backup: [https://web.archive.org/web/20221016210644/https://www.americanmicroinc.com/electrical-insulator-materials/fish-paper/ Web Archive])</ref> or a compliant foam<ref>https://www.rogerscorp.com/elastomeric-material-solutions/poron-industrial-polyurethanes (Backup: [https://web.archive.org/web/20220604010733/https://rogerscorp.com/elastomeric-material-solutions/poron-industrial-polyurethanes Web Archive])</ref> may be appropriate materials to serve this purpose. This material should not be flammable. If the material is heat insulating, it is important to address thermal management.

===== Compression =====
Compression is required to prevent premature failure of the cell. Without compression electrolyte will become unevenly distributed, causing current gradients in the cell and uneven heating. Local temperatures can become high enough to form gas formation leading to cells 'puffing up' even when the pack is otherwise held within temperature and voltage constraints. This will be exacerbated in packs with otherwise poor thermal management. Compression forces gas generated to the margins of the cell, outside of the cell stack, minimising its effect cell performance. Gas in the middle cells will create a dead space which does not store or release energy.

There is ~1% expansion through a discharge cycle. As the cell ages, the nominal cell thickness can grow by 3-5%. For A123 cells the ideal pressure is between 4 and 18psi with the ideal pressure being ~12psi. Maintaining 12psi can increase the life by 500 cycles over that of 4 or 18psi

There is some suggestion that in uses where 1C is never exceeded compression ''may'' not be required.

Highly rigid endplates with a mechanism to allow for a limited degree of expansion (e.g. steel bands) are considered an effective solution to this challenge.

It should be noted that compression is a challenge specific to pouch cells. Cylindrical cells are designed to maintain their own compression within the cell's electrode stack by their design.

This thread provides more information and experimentation relating to pack compression: <nowiki>https://endless-sphere.com/forums/viewtopic.php?f=14&t=52244</nowiki>

===== Pouch Cell Pack Design Examples =====
<nowiki>*</nowiki>placeholder*

===== Notes regarding recycled pouch cells =====
Pouch cells are somewhat fragile, and breaching the insulation is not difficult, especially in a cells removed from existing packs and repurposed. If the pouch has had their poly-layers compromised you may see a number of faults:
* Black spots around the perimeter of the cell indicate electrolyte leakage
* Voltage on the outside of the bag. Note that microvoltage between the pouch and the electrode is normal (and due to a capacitive effect).
While the majority of these cells should no longer be in the market, a significant number of faulty cells made it back into the 'greymarket' in around 2013. These cells had misaligned tabs which can also lead to isolation failures between the tab and the pack. These cells should be avoided, particularly in high demand applications.

===== Situations likely to cause pouch cell failure =====
''Taken directly from wb9k's''<ref name=":0">https://endless-sphere.com/forums/memberlist.php?mode=viewprofile&u=33107 </ref> ''post on endless sphere in the A123 thread''<ref name=":1">https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761 (Backup: [https://web.archive.org/web/20210116021026/https://endless-sphere.com/forums/viewtopic.php?f=14&t=38761 Web Archive])</ref>
# '''Overcharge'''. Any extended time above 3.8 Volts will generate enough heat and electrochemical activity to puff a cell, especially one that is improperly compressed.
# '''Overdischarge followed by charge'''. Any A123 cell that has been pulled low enough to come to rest at <300 mV should be immediately scrapped. The published number for that is 500 mV, but the real figure is closer to 300, so that's a "safety buffer" if you will. Below this Voltage, the Cu electrodes start to dissolve into the electrolyte. When charge is applied, the Cu forms dendrites that puncture the separator layer, forming an internal short in the cell. This can puff a cell in a hurry---the more charge current on tap, the worse it's prone to be.
# '''Driving a cell negative'''. I've neglected to mention this before, but it is a possibility. I don't know much about the specific mechanism at this time.
# '''Malfunctioning or misinformed electronics'''. This is the most common cause of all of the above in my experience. At this stage of the game, it is critical for YOU to understand how your BMS functions on at least a cursory level. Choose your BMS very carefully and periodically verify that it is operating properly. They're not all created equal. Make sure V sense lines are securely connected and free of corrosion. Just because your BMS says there was never a problem doesn't necessarily make it so. Avoid harnesses or ribbon cables between multiple modules if possible--they are problematic wherever they are used in any mobile electronics.
# '''Exposure to or generation of sufficient heat'''. I don't know exactly at what temperature gas formation begins in the electrolyte, but we spec a max storage temp of 80 (or 85?) degrees C and I suspect this is the reason. The hotter, the puffier--to a point. This is why soldering tabs poses a real hazard to cell health. If you feel you must solder, sink or blow the heat away from the body of the cell. Use a big iron that can make sufficient local heat quickly, before the whole mass of the cell gets hot. You might even get the cell warm enough to melt separator if not careful.
# '''No compression, not enough compression, improperly distributed compression'''. This is a pack/module design issue. Apply 10, maybe 15 psi to your cell stack end to end and then band snugly and evenly. Use hard endplates of some sort--never wrap cells directly or allow their shape to become distorted. Protect all areas of the pouch from impact damage. This obviously does not apply to cylindrical cells.

==== LiFePO4 prismatic cells ====
<nowiki>*</nowiki>placeholder*

==== LiFePO4 cylindrical cells ====
<nowiki>*</nowiki>placeholder*

==== LiFePO4 cell ageing ====
''Derived (barely paraphrased) from wb9k's''<ref name=":0" /> ''post on endless sphere in the A123 thread''<ref name=":1" />

Capacity loss is caused by the lithium that was available for storage becoming permanently plated on the cathode. Being unable to move within the cell it is no longer available to store energy. The impact of this plating is greater than the amount of lithium 'lost' to plating because not only is the lithium no longer available, it is also preventing access to that part of the cathode meaning Li that can still move has to take a longer path to reach the cathode. Lithium plating is one cause of increased cell resistance (there are others), a sign of worsening cell health.

There is no linear relationship between actual capacity loss and impedance rise. However some cell defects will also increase impedance.

Increasing cell resistance may cause a number of symptoms which may be confused with High Self Discharge.<ref>https://earthshipbiotecture.com/a-lithium-ion-battery-primer/ (Backup: [https://web.archive.org/web/20220524233332/https://earthshipbiotecture.com/a-lithium-ion-battery-primer/ Web Archive])</ref>
# Elevated Peukert Losses. As more energy per amount of current through the cell is lost as heat, the cells useable capacity decreases. So the apparent capacity loss is higher than the actual capacity loss of cycleable lithium. When used in low current applications (e.g. solar energy storage) the actual and apparent decrease in capacity will be small. In high current draw applications (like EV traction packs), the Peukert loss increases proportionally, so the apparent capacity loss increases much faster than the actual capacity loss.
# Greater voltage excursion under the same load. Due to increased cell resistancethe voltage will sag further under the same load than a cell in optimal condition. The inverse is also true, the voltage will be higher for the same amount of charging current applied. The cell will then rebound to a voltage further from the loaded and charging voltages. This, obviously, can look like high self discharge but is a different phenomenon.
# Absolute maximum current decrease.
Elevated impedance causes a more complex constellation of symptoms, some of which may be easy to confuse with High Self Discharge (HSD). Ohm's law (E=I/R) holds the key to understanding here.

'''1) Elevated Peukert losses.''' Because more energy per unit of current through the cell is lost as heat, less of the cell's capacity is actually USABLE. Thus, apparent capacity loss can be significantly greater than actual capacity loss caused by the loss of cycleable Li alone. In low current applications, the two numbers will be close together. In high current applications, Peukert losses increase in proportion, so apparent loss of capacity breaks further and further away from actual capacity loss as current increases.

'''2) Greater voltage excursion under the same load.''' Elevated resistance across the cell means that voltage will sag more under the same load than it did when the cell was healthier. Conversely, voltage will rise higher with the same amount of applied charge current than it did when it was healthier. At the same time, rebound/settling voltages will be further away from loaded/charging voltages. In other words, the cell will rebound to a voltage further away from loaded voltage, all else being equal. Similarly, voltage will settle farther from the charge voltage with the same charge applied. This can give the illusion of elevated self-discharge, but the phenomenon is actually not the same thing. Again, the greater the charge and load currents, the greater the effect becomes.

'''3) Absolute max current decreases.''' Because the cell's series resistance is elevated, the maximum possible current through the cell is decreased.

Just to confuse things further, there can be many factors that lead to impedance rise. Some are related to Li plating, others are not.

=== Lithium-ion ===
Lithium-ion (Li-ion) batteries have a greater energy density than Lithium Iron Phosphate batteries, but have more challenging needs to use safely. The ideal operating range of Li-ion batteries is between +15 and +45°C. The upper limit of temperature is particularly important as Li-ion batteries experience thermal runaway - an unstoppable chain reaction that can occur in milliseconds releasing the stored energy in the cell. This can produce temperatures of 400°C and a fire that is extremely difficult to put out. Thermal runaway can start as low as 60°C and becomes much more likely at 100°C

Risk factors for thermal runaway:
* Short Circuits - either internally or externally
* Overcharging
* Excessive current draw or when charging

==== Li-ion pouch cells ====
Kokam produce high-performance Li-ion pouch cells<ref>https://kokam.com/en/product/cell/lithium-ion-battery (Backup: [https://web.archive.org/web/20220423100132/https://kokam.com/en/product/cell/lithium-ion-battery Web Archive])</ref>. These combine relative ease of use and pack construction with performance close to cylindrical cells.

==== Li-ion 18650 and other cylindrical cells ====
Cylindrical cells are favoured by Tesla, and are probably the main reason why their cars achieve such excellent performance. They are light, compact, powerful and expensive. Unfortunately, cylindrical cells are difficult (and potentially dangerous) to use in DIY conversions. There are two good reasons for this: thermal management and cell configuration.

As stated above, Li-ion cells are prone to thermal runaway. So you need perfect battery and thermal management to ensure that no cell ever exceeds the critical voltage or temperature. If this happens, a cell can short-circuit internally, releasing a lot of energy - potentially explosively. Furthermore, the individual cells are small, so need to be arranged in parallel. In the case of the Tesla Model S 85kW pack, there are 74 cells in parallel. Imagine if one of those cells fails and becomes short circuited internally. You now have 73 very high power cells all feeding in to that short circuit...

In fact, you don't have to imagine: you can watch this famous video instead (courtesy of Rich Rebuilds).

<youtube>WdDi1haA71Q</youtube>

== OEM modules ==
Using an OEM module means a lot of the difficulties and safety issues associated with battery design are taken care of e.g. cooling, clamping, etc.

Here is a handy list of OEM modules:
{| class="wikitable sortable mw-collapsible"
|+
!Manufacturer
!Model
!Capacity (kWh)
!Weight (kg)
!w (mm)
!d (mm)
!h (mm)
!Gravity (kg/kWh)
!Volume (L/kWh)
!Voltage (V)
!Current (cont A)
!Current (peak A)
!Cell arrangement
!Cell type
!Chemistry
|-
|Tesla
|Model S 85kWh
|5.3
|26
|690
|315
|80
|4.9
|3.3
|22.8
|500
|750
|74p6s
|18650
|Li-ion
|-
|Tesla
|Model S 100kWh
|6.4
|28
|680
|315
|80
|4.4
|2.7
|22.8
|
|870
|86p6s
|18650
|Li-ion
|-
|Tesla
|Model 3 LR (inner)
|19.2
|98.9
|1854
|292
|90
|5.2
|2.5
|91.1
|
|971
|46p25s
|2170
|Li-ion
|-
|Tesla
|Model 3 LR (outer)
|17.7
|86.6
|1715
|292
|90
|4.9
|2.5
|83.9
|
|971
|46p23s
|2170
|Li-ion
|-
|Tesla
|Model 3 SR (inner)
|13.0
|58.9
|1385
|326
|90
|
|3.7
|91.1
|
|603
|31p24s
|2170
|Li-ion
|-
|Tesla
|Model 3 SR (outer)
|12.0
|58.9
|1380
|344
|90
|
|3.8
|83.9
|
|603
|31p24s
|2170
|Li-ion
|-
|Tesla
|Model 3 [https://moneyballr.medium.com/tesla-lfp-model-3-battery-design-bcf559ea1cc1 LFP] (inner)
|13.38
|86
|1860
|323
|81
|6.4
|
|83
|[https://lifepo4.com.au/shop/cells-lifepo4/catl/catl161ah-tesla-3-2v-lfp-lithium-iron-phosphate-battery/ 161]
|
|23s
|Prismatic
|LiFePo4
|-
|Tesla
|Model 3 [https://moneyballr.medium.com/tesla-lfp-model-3-battery-design-bcf559ea1cc1 LFP] (outer)
|15.07
|93.48
|1948
|323
|81
|6.2
|
|93.5
|[https://lifepo4.com.au/shop/cells-lifepo4/catl/catl161ah-tesla-3-2v-lfp-lithium-iron-phosphate-battery/ 161]
|
|25s
|Prismatic
|LiFePo4
|-
|Calb
|4S3P
|2.19
|12
|355
|151
|108
|5.5
|2.6
|14.6
|
|900
|3p4s
|Pouch
|Li-ion
|-
|Calb
|6S2P
|2.19
|12
|355
|151
|108
|5.5
|2.6
|22.2
|
|600
|2p6s
|Pouch
|Li-ion
|-
|Chevrolet
|Volt 2012
|4
|38
|470
|180
|280
|9.5
|5.9
|88.8
|
|676
|3p24s
|Pouch
|Li-ion
|-
|BMW
|i3 60Ah
|2
|13
|410
|310
|150
|6.5
|9.5
|28.8
|210
|350
|2p8s
|Prismatic
|Li-ion
|-
|BMW
|i3 94Ah
|4.15
|28
|410
|310
|150
|6.7
|4.6
|45.6
|
|409
|12s
|Prismatic
|Li-ion
|-
|BMW
|i3 120Ah
|5.3
|28
|410
|310
|150
|5.3
|3.6
|45.6
|
|360
|12s
|Prismatic
|Li-ion
|-
|BMW
|[[BMW Hybrid Battery Pack|PHEV 34Ah]]
|2.0
|13.05
|368
|178
|102
|6.525
|3.34
|59.0
|
|
|16s
|Prismatic
|Li-ion
|-
|Jaguar
|iPace
|2.5
|12
|340
|155
|112
|4.8
|2.4
|10.8
|720
|1200
|4p3s
|Pouch
|Li-ion
|-
|LG
|4P3S
|2.6
|12.8
|357
|151
|110
|4.9
|2.3
|11
|
|
|4p3s
|Pouch
|Li-ion
|-
|Mitsubishi
|Outlander
|2.4
|26
|646
|184
|130
|10.8
|6.4
|60
|
|240
|16s
|
|Li-ion
|-
|Nissan
|[https://www.youtube.com/watch?v=hpgv-dY-q6M Leaf 24kWh]
|0.5
|3.65
|300
|222
|34
|7.3
|4.5
|7.2
|130
|228
|2p2s
|Pouch
|Li-ion LMO
|-
|Nissan
|Leaf 30kWh
|1.25
|
|300
|222
|34
|
|3.6
|14.4
|
|
|2p4s
|Pouch
|Li-ion
|-
|Nissan
|Leaf 40kWh
|1.6
|8.7
|300
|222
|68
|5.4
|2.8
|14.4
|
|314
|2p4s
|Pouch
|Li-ion NMC
|-
|Nissan
|Leaf 62kWh
|2.58
|
|
|
|
|
|
|14.4
|
|
|3p4s
|
|Li-ion
|-
|Porsche
|Taycan
|2.77
|12.7
|390
|155
|115
|4.9
|2.3
|21.9
|360
|600
|2p6s
|Pouch
|Li-ion
|-
|PSA/Opel
|[https://web.archive.org/web/20230615115914/https://www.fev-consulting.com/fileadmin/user_upload/Consulting/Smart_cost_reduction/Peugeot_E208_HV_battery.pdf Peugeot E-208, Corsa E]
|2.73
|12.7
|390
|150
|115
|4.6
|2.5
|21.9
|
|
|2p6s / 1p6s
|Prismatic
|Li-ion
|-
|Volvo
|XC90 T8
|2.01
|12.1
|300
|180
|150
|6.0
|4.0
|59.2
|170
|340
|16s
|
|Li-ion
|-
|VW
|[[VW Hybrid Battery Packs|Passet GTE]]
|2.48
|23.4 (with cooler plate)
10.8kg single
|410 (C/P)
355 (S)
|235 (C/P)
150 (S)
|150 (C/P)
108 (S)
|9.4
|5.5
|88.8
|
|
|24s
|Prismatic
|Li-ion
|-
|VW
|[[VW Hybrid Battery Packs|Golf GTE]]
|1.086
|9.8
|355
|152
|110
|9.02
|5.5
|44
|
|
|12s
|Prismatic
|Li-ion
|-
|VW
|Touareg 14,1 kWh
|1.76
|12.3
|385
|150
|108
|7.0
|3.5
|45.25
|
|
|13s
|Prismatic
|Li-ion
|-
|VW
|id3/id4 55kWh, 62kWh
|6.85
|32
|225
|590
|110
|4.67
|2.13
|44.4
|
|
|12s2p
|
|
|-
|VW
|id3/id4 82kWh
|6.85
|32
|225
|590
|110
|4.67
|2.13
|29.6
|
|
|8s3p
|
|
|-
|Toyota
|Prius Prime
|1.76
|16.9
|597
|152
|121
|9.6
|6.24
|70.3
|
|
|
|
|
|}

== References ==
<references />
[[Category:Battery]]

Tesla Model S/X GEN2 Charger

2022-05-17T20:42:16Z

EV Builder:

[[File:Gen2.jpg|thumb|tesla gen2 ac charger]]
The Tesla GEN2 charger is a single/three phase 10kW AC charger that was fitted in the Model S from 2012 until it was replaced in the 2016 'facelift' model with GEN3.

One or two GEN2 chargers are installed beneath the rear seats in the model s for ac charging.

The charger is made up of three 3.3 kw modules, each sitting on a liquid cooling plate. This assembly enables both single and multi phase ac charging.

"[https://openinverter.org/forum/viewtopic.php?f=10&t=78&p=9994#p9994 Running a Tesla charger at much under 200v dc will cause it to explode. Yes I know the label says 50 to 450v but it lies. Yes I blew one up discovering this.]"
[[File:Tesla gen2 xray.png|thumb|Tesla Gen2 X-Ray]]
Charger Dimensions: 500x300x100mm

== Replacement control boards ==
replacement control board https://github.com/damienmaguire/Tesla-Charger

v5 kit: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-kit

v5 partially built board: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-partially-built

github: https://github.com/damienmaguire/Tesla-Charger

== Charger connection ==
[[File:Tesla Charger Logic connections.jpg|none|thumb|607x607px|
{| class="wikitable"
!A1
!A2
!A3
!A4
!A5
!
!B1
!B2
!B3
!B4
!B5
!B6
|-
|OUT2 - AC present
|
|D1 - enable
|
|
|
|12V supply
|
|
|CANH
|Control Pilot
|
|-
!A6
!A7
!A8
!A9
!A10
!
!B7
!B8
!B9
!B10
!B11
!B12
|-
|OUT1 - HV enable
|
|
|
|D2 - 3p
|
|GND
|
|
|CANL
|Proximity
|
|}
[[File:AC DC Connections.jpg|left|thumb|600x600px]]]]

===Connector part numbers===
AC and DC power connections (Molex Sabre series):

*housing: 044441-2006
*pins: 043375-3001 (18-20AWG), 043375-0001 (14-16AWG)

Logic connectors (Molex MX150L series):

*housing: 10-way 19418-0014, 12-way 19418-0026
*pins: 33012-2002 (18-20AWG), 33012-2001 (14-16AWG)

==Programming==
you'll need a st-link v2 smt32 programmer. Unofficial ones are cheaply available from amazon and ebay.

* st-link programming utility: https://www.st.com/en/development-tools/stsw-link004.html
* stm32_loader.hex https://openinverter.org/forum/viewtopic.php?f=7&t=1119

====Two options:====
#Charger_gen2_v5.hex https://github.com/damienmaguire/Tesla-Charger/tree/master/V5/Software/Binary
#Or commercial software: https://openinverter.org/files/stm32_charger.zip

Click "Target --> Connect" from top menu. You want to see the screen get filled with a data dump of symbols. In the upper right of the screen you can see it identified the device.

In the main viewing window are multiple tabs, click the "Binary File" tab to select it.

This will ask to open a file, you choose: "stm32_loader.hex" from openinverter.org, download ahead of time. This will change what shows up in the viewing window.

Click "Target --> Program and Verify" from the top menu. This pops up a window, and you can probably just click "Start" on that window. This programs the STM32 chip with the stm32_loader.hex file.

The STM32 on your v5 gen2 Tesla charger Board can now load other files.

You can close the stm32_loader.hex tab, and go back to the "Binary File" tab, which will ask to open another file.

You choose: "Charger_Gen2_v5.hex"

Same as last time, click "Target --> Program and Verify" from the top menu. And click Start.

The STM32 on your v5 gen2 Tesla charger Board now also has the software to run.

You are now done with the ST-Link USB dongle, it's no longer needed.

Future updates can be done via WiFi. (must have esp8266 WiFi module programed https://openinverter.org/forum/viewtopic.php?f=5&t=8 )

==External CAN bus==
[[File:Gen2 Charger V5aB2 logic board.jpg|thumb|Gen2 Charger V5aB2 logic board with CAN wired to external pins]]
The V5aB2 version of the board has no connection to the external CAN bus (V5aB3 has) but you can add it with to bodge wires as shown in the picture. You will find CANH and CANL on the 3 pin header underneath the WiFi module. Route them over to CONN6 as shown. CONN2.1 (CANH) is connected to CONN6.24, CONN2.2 (CANL) to CONN6.26.

Revision V4aB3 does not need this modification. If you do NOT use the external CAN bus on that version '''remember to close the solder jumper''' next to R1 under the WiFi module.

If the charger is the first/last device on your CAN bus there is nothing else to do. If it is somewhere in the middle you have to remove the bus termination resistor R1.

Before doing this be aware that all internal CAN traffic is also seen on the external CAN bus. The following IDs are already used and mustn't used by any other device on the bus:

207, 209, 20b, 217, 219, 21b, 227, 229, 22b, 237, 239, 23b, 247, 249, 24b, 327, 329, 32b, 347, 349, 34b, 357, 359, 35b, 367, 368, 369, 36b, 377, 379, 37b, 537, 539, 53b, 717, 719, 71b.

====Functionality of external CAN bus====
With the CAN bus now available externally you can remote control your charger via CAN and also receive some values from it. The mapping is similar to the CHAdeMO CAN protocol. The feature is only available in the commercial firmware.
{| class="wikitable"
|+Charger CAN protocol
!ID
!Direction
!Byte 0
!Byte 1
!Byte 2
!Byte 3
!Byte 4
!Byte 5
!Byte 6
!Byte 7
|-
|0x102
|Receive by charger
|
|DC voltage limit MSB
|DC voltage limit LSB
|DC current set point
|==1 enable charging
|SoC
|
|
|-
|0x108
|Transmit by charger
|Version=0
|Max DC voltage MSB
|Max DC voltage LSB
|Max DC current
|
|
|
|
|-
|0x109
|Transmit by charger
|Version=0
|DC voltage MSB
|DC voltage LSB
|DC current
|''0 when off, 5 when charging''
Doesn't belong here, will

move to Byte 5 after 1.06.R!
|Like Byte 4
for versions

after 1.06.R
|
|
|}
Example: transmit "0x102 # 0 0x1 0x86 0x14 0x1 50 0 0" to enable charging up to a voltage of 390V and a DC current of 20A, report SoC of 50%.[[File:Parameter view of commercial firmware.png|thumb|Parameter view of commercial firmware]]

==Commercial charger firmware==
In addition to the open source firmware there is also a commercial firmware. It adds advanced features:
*Support for the standard open inverter web interface
*Parameter handling as known from the inverter firmware (see picture)
*Spot value handling like inverter including plotting, gauges, and logging
*Over the air update like inverter
*DC current control
*CAN control as described above
The firmware requires the board to be flashed with [https://github.com/jsphuebner/tumanako-inverter-fw-bootloader/releases stm32_loader.hex]. An Olimex MOD-ESP8266 must be programmed with the [https://github.com/jsphuebner/esp8266-web-interface openinverter web interface]. See [[Olimex MOD-WIFI-ESP8266]] and [https://openinverter.org/forum/viewtopic.php?f=5&t=8 this forum thread] for flashing instructions. With that done, future updates will happen via the web interface.

==='''Connecting to the Web interface'''===
Depending on the version of your Olimex wifi dongle they are "open" or you need a password to connect.

By default you can connect to the network (Access Point) and browse to: '''192.168.4.1'''

By default all charger kits will have '''SSID''' : charger '''PASSWORD''' : charger123

''Note: Its recommend that you change it. Nobody wants to drive and have some joker with a phone finding this information and accessing your charger.''

===Registration===
If you bought a fully assembled V5aB3 board from the EVBMW webshop you can skip this step.
[[File:Tesla Charger Serial.png|frame]]
The firmware will work without registration but charging time is limited to 5 minutes. To overcome this, a board-specific pin must be bought. In order to do this the firmware and web interface must be installed and working.

Go to the [https://openinverter.org/shop/index.php?route=product/product&product_id=67 openinverter webshop] and check out as many pins as you need. When checking out add the serial number(s) of your board(s) in the order option. You will find the serial number on the bottom of the page as last spot value.

You will then receive an email containing one pin for each board. Enter the pin in the web interface in the "pin" parameter. When the pin is correct it will be automatically saved to flash and your board is ready to be used.

==Commercial firmware usage manual==
===Parameters===
The firmware exports a number of parameters to be modified by the user. All modifications are temporary until you hit "Save Parameters to Flash" at the top of the page.

We will go over all of them.

====idclim====
This parameter is mainly relevant for CAN operation. It is transmitted via CAN to let the vehicle know how much DC current the charger can deliver. Each charger module maxes out at about 15.5A so the maximum total charging current is 46.5A. Since the total power is also limited to 10 kW it depends on the output voltage as well. There is no need to be exact on this, the firmware will automatically limit the AC input current to each module to the hardware maximum.

====iaclim====
This is the per-module AC current limit. When charging from a 3-phase outlet (see below) each module will be allowed this current. When charging from single phase, this current will be equally distributed between the enabled chargers.

====idcspnt====
DC charge current limit. An additional limit to charge power. It is also mapped to the CAN bus so if you have a BMS that calculates a maximum charge current you can forward this to the charger.

====chargerena====
Here you can program which charger modules you want to enable. It is a flag channel, so 1 means "Module 1 enabled", 2 means "Module 2 enabled" and 4 means "Module 3 enabled". Combining these flags enables multiple modules, e.g. 5=4+1 enables modules 1 and 3. 7=4+2+1 enables all modules. This is the default. The parameter can not be directly changed, but you have to type "set chargerena 5" next to where it says "Send Custom Command" on the top of the page and then press the button.

====udcspnt====
This modifies the constant voltage setpoint of the chargers. This value is transmitted directly to the modules without further processing. It lets you add a constant voltage phase to your charge process. When reaching this voltage the chargers will control the current to maintain this voltage.

====udclim====
This parameters specifies a charge end condition. When the voltage is hit the charging process stops and will not resume until you re-plug the charge cable. If you wish to add a constant voltage phase and control charge end by your BMS, set this parameter higher than udcspnt.

====timelim====
Another charge end condition. Charge only for the specified time in minutes.

====inputype====
*'''Type2''': Specifies one or more modules are operated on ONE common phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' (pilot signal) are distributed equally over the enabled modules. For example if you enable all 3 modules, the cable allows 32A but the EVSE only allows 16A, every module will run at 16/3=5.3A. Charging will start automatically as soon as proximity and a valid pilot signal is detected.
*'''Type2-3P''': Specifies each module is connected to a different phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' are allowed for each module.
*'''Type-2Auto''': relies on input D2 to indicate that 3 phase is present (from external relay), to allow charging on either single or three phase automatically.
*'''Type1''': Like '''Type2''' but ''cablelim'' is always assumed 40A.
*'''Manual''': Specifies one or more modules are operated on ONE common phase, power is distributed like in '''Type2''' mode. Charging starts as soon as the enable pin "D1" goes high. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.
*'''Manual-3P''': Specifies that each module is connected to a different phase of 3-phase outlet. Each module is allowed ''iaclim'' AC current. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.

====cancontrol====
When on, expect charging instructions via CAN message 0x102 as described above. Charging will start when the enable bit is set. when no CAN message is received for 1s, charging will stop. Note that the digital enable input "D1" also needs to high to allow charging. Also the autostart conditions apply when enabled.

====idckp/idcki====
Can be used to tune the control loop of the DC current PI controller.

====pin====
Software pin, obtained by registration.

== Additional Resources ==

Videos by Damien Maguire showing internals of the charger, CAN IDs, wiring, and development of the board:

[https://www.youtube.com/watch?v=LqJ7HhS65po The Tesla Project : 10 Kw Gen 2 Charger]

[https://www.youtube.com/watch?v=ULadBnl7wgM The Tesla Project : Charger Progress]

[https://www.youtube.com/watch?v=mOIgp3QFg78 The Tesla Project : 10kW Charger Charging]

[https://www.youtube.com/watch?v=BG4kYsoHe54 The Tesla Project : More Charger Hacking]

[https://www.youtube.com/watch?v=bPLqXCiArVM The Tesla Project : Charger 10kw Run]

== Common Issues ==

* The Tesla chargers are very sensitive to grounding. The case MUST be connected to vehicle 12v ground AND evse earth/ground when charging. [https://openinverter.org/forum/viewtopic.php?p=3890#p3890]
* If you do NOT use the external CAN bus on that version '''remember to close the solder jumper''' next to R1 under the WiFi module.

[[Category:OEM]]
[[Category:Tesla]]
[[Category:Charger]]

Tesla Model S/X GEN2 Charger

2021-10-20T15:10:26Z

EV Builder: /* Commercial charger firmware */

[[File:Gen2.jpg|thumb|tesla gen2 ac charger]]
The Tesla GEN2 charger is a single/three phase 10kW AC charger that was fitted in the Model S from 2012 until it was replaced in the 2016 'facelift' model with GEN3.

One or two GEN2 chargers are installed beneath the rear seats in the model s for ac charging.

The charger is made up of three 3.3 kw modules, each sitting on a liquid cooling plate. This assembly enables both single and multi phase ac charging.

"[https://openinverter.org/forum/viewtopic.php?f=10&t=78&p=9994#p9994 Running a Tesla charger at much under 200v dc will cause it to explode. Yes I know the label says 50 to 450v but it lies. Yes I blew one up discovering this.]"

Charger Dimensions: 500x300x100mm

== Replacement control boards ==
replacement control board https://github.com/damienmaguire/Tesla-Charger

v5 kit: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-kit

v5 partially built board: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-partially-built

github: https://github.com/damienmaguire/Tesla-Charger

== Charger connection ==
[[File:Tesla Charger Logic connections.jpg|none|thumb|607x607px|
{| class="wikitable"
!A1
!A2
!A3
!A4
!A5
!
!B1
!B2
!B3
!B4
!B5
!B6
|-
|OUT2 - AC present
|
|D1 - enable
|
|
|
|12V supply
|
|
|CANH
|Control Pilot
|
|-
!A6
!A7
!A9
!A10
!A11
!
!B7
!B8
!B9
!B10
!B11
!B12
|-
|OUT1 - HV enable
|
|
|
|
|
|GND
|
|
|CANL
|Proximity
|
|}
[[File:AC DC Connections.jpg|left|thumb|600x600px]]]]

=== Connector part numbers ===
AC and DC power connections - housing 044441-2006, pins 0433753001

Logic connectors Molex: housing 10 way 19418-0014, 12 way 19418-0026, pins 33012-2001

== Programing ==
you'll need a st-link v2 smt32 programmer. Unofficial ones are cheaply available from amazon and ebay.

st-link programming utility: https://www.st.com/en/development-tools/stsw-link004.html

stm32_loader.hex https://openinverter.org/forum/viewtopic.php?f=7&t=1119

==== Two options: ====
# Charger_gen2_v5.hex https://github.com/damienmaguire/Tesla-Charger/tree/master/V5/Software/Binary
# Or commercial software: https://openinverter.org/files/stm32_charger.zip

Click "Target --> Connect" from top menu. You want to see the screen get filled with a data dump of symbols. In the upper right of the screen you can see it identified the device.

In the main viewing window are multiple tabs, click the "Binary File" tab to select it.

This will ask to open a file, you choose: "stm32_loader.hex" from OpenInverter.org, download ahead of time. This will change what shows up in the viewing window.

Click "Target --> Program and Verify" from the top menu. This pops up a window, and you can probably just click "Start" on that window. This programs the STM32 chip with the stm32_loader.hex file.

The STM32 on your v5 gen2 Tesla charger Board can now load other files.

You can close the stm32_loader.hex tab, and go back to the "Binary File" tab, which will ask to open another file.

You choose: "Charger_Gen2_v5.hex"

Same as last time, click "Target --> Program and Verify" from the top menu. And click Start.

The STM32 on your v5 gen2 Tesla charger Board now also has the software to run.

You are now done with the ST-Link USB dongle, it's no longer needed.

Future updates can be done via wifi. (must have esp8266 wifi module programed https://openinverter.org/forum/viewtopic.php?f=5&t=8 )

== External CAN bus ==
[[File:Gen2 Charger V5aB2 logic board.jpg|thumb|Gen2 Charger V5aB2 logic board with CAN wired to external pins]]
The V5aB2 version of the board has no connection to the external CAN bus (V5aB3 has) but you can add it with to bodge wires as shown in the picture. You will find CANH and CANL on the 3 pin header underneath the wifi module. Route them over to CONN6 as shown. CONN2.1 (CANH) is connected to CONN6.24, CONN2.2 (CANL) to CONN6.26.

Revision V4aB3 does not need this modification. If you do NOT use the external CAN bus on that version '''remember to close the solder jumper''' next to R1 under the Wifi module.

If the charger is the first/last device on your CAN bus there is nothing else to do. If it is somewhere in the middle you have to remove the bus termination resistor R1.

Before doing this be aware that all internal CAN traffic is also seen on the external CAN bus. The following IDs are already used and mustn't used by any other device on the bus:

207, 209, 217, 219, 227, 229, 237, 239, 247, 249, 327, 329, 347, 349, 357, 359, 367, 368, 369, 377, 379, 537, 539, 717, 719, 20B, 21B, 22B, 23B, 24B, 32B, 34B, 35B, 36B, 37B, 42C, 43C, 44C, 45C, 53B, 71B.

==== Functionality of external CAN bus ====
With the CAN bus now available externally you can remote control your charger via CAN and also receive some values from it. The mapping is similar to the CHAdeMO CAN protocol. The feature is only available in the commercial firmware.
{| class="wikitable"
|+Charger CAN protocol
!ID
!Direction
!Byte 0
!Byte 1
!Byte 2
!Byte 3
!Byte 4
!Byte 5
!Byte 6
!Byte 7
|-
|0x102
|Receive by charger
|
|DC voltage limit MSB
|DC voltage limit LSB
|DC current set point
|==1 enable charging
|SoC
|
|
|-
|0x108
|Transmit by charger
|Version=0
|Max DC voltage MSB
|Max DC voltage LSB
|Max DC current
|
|
|
|
|-
|0x109
|Transmit by charger
|Version=0
|DC voltage MSB
|DC voltage LSB
|DC current
|''0 when off, 5 when charging''
Doesn't belong here, will

move to Byte 5 after 1.06.R!
|Like Byte 4
for versions

after 1.06.R
|
|
|}
Example: transmit "0x102 # 0 0x1 0x86 0x14 0x1 50 0 0" to enable charging up to a voltage of 390V and a DC current of 20A, report SoC of 50%.[[File:Parameter view of commercial firmware.png|thumb|Parameter view of commercial firmware]]

== Commercial charger firmware ==
In addition to the open source firmware there is also a commercial firmware. It adds advanced features:
* Support for the standard open inverter web interface
* Parameter handling as known from the inverter firmware (see picture)
* Spot value handling like inverter including plotting, gauges, and logging
* Over the air update like inverter
* DC current control
* CAN control as described above
The firmware requires the board to be flashed with [https://github.com/jsphuebner/tumanako-inverter-fw-bootloader/releases stm32_loader.hex]. An Olimex MOD-ESP8266 must be programmed with the [https://github.com/jsphuebner/esp8266-web-interface openinverter web interface]. See [[Olimex MOD-WIFI-ESP8266]] and [https://openinverter.org/forum/viewtopic.php?f=5&t=8 this forum thread] for flashing instructions. With that done, future updates will happen via the web interface.

=== '''Connecting to the Web interface''' ===
Depending on the version of your Olimex wifi dongle they are "open" or you need a password to connect.

By default you can connect to the network (Acces Point) and browse to: '''192.168.4.1'''

By default all charger kits will have '''SSID''' : charger '''PASSWORD''' : charger123

''Note: Its recommend that you change it. No body wants to drive and have some joker with a phone finding this information and accesing your charger.''

=== Registration ===
If you bought a fully assembled V5aB3 board from the EVBMW webshop you can skip this step.
[[File:Tesla Charger Serial.png|frame]]
The firmware will work without registration but charging time is limited to 5 minutes. To overcome this, a board-specific pin must be bought. In order to do this the firmware and web interface must be installed and working.

Go to the [https://openinverter.org/shop/index.php?route=product/product&product_id=67 openinverter webshop] and check out as many pins as you need. When checking out add the serial number(s) of your board(s) in the order option. You will find the serial number on the bottom of the page as last spot value.

You will then receive an email containing one pin for each board. Enter the pin in the web interface in the "pin" parameter. When the pin is correct it will be automatically saved to flash and your board is ready to be used.

== Commercial firmware usage manual ==
=== Parameters ===
The firmware exports a number of parameters to be modified by the user. All modifications are temporary until you hit "Save Parameters to Flash" at the top of the page.

We will go over all of them.

==== idclim ====
This parameter is mainly relevant for CAN operation. It is transmitted via CAN to let the vehicle know how much DC current the charger can deliver. Each charger module maxes out at about 15.5A so the maximum total charging current is 46.5A. Since the total power is also limited to 10 kW it depends on the output voltage as well. There is no need to be exact on this, the firmware will automatically limit the AC input current to each module to the hardware maximum.

==== iaclim ====
This is the per-module AC current limit. When charging from a 3-phase outlet (see below) each module will be allowed this current. When charging from single phase, this current will be equally distributed between the enabled chargers.

==== idcspnt ====
DC charge current limit. An additional limit to charge power. It is also mapped to the CAN bus so if you have a BMS that calculates a maximum charge current you can forward this to the charger.

==== chargerena ====
Here you can program which charger modules you want to enable. It is a flag channel, so 1 means "Module 1 enabled", 2 means "Module 2 enabled" and 4 means "Module 3 enabled". Combining these flags enables multiple modules, e.g. 5=4+1 enables modules 1 and 3. 7=4+2+1 enables all modules. This is the default. The parameter can not be directly changed, but you have to type "set chargerena 5" next to where it says "Send Custom Command" on the top of the page and then press the button.

==== udcspnt ====
This modifies the constant voltage setpoint of the chargers. This value is transmitted directly to the modules without further processing. It lets you add a constant voltage phase to your charge process. When reaching this voltage the chargers will control the current to maintain this voltage.

==== udclim ====
This parameters specifies a charge end condition. When the voltage is hit the charging process stops and will not resume until you re-plug the charge cable. If you wish to add a constant voltage phase and control charge end by your BMS, set this parameter higher than udcspnt.

==== timelim ====
Another charge end condition. Charge only for the specified time in minutes.

==== inputype ====
* '''Type2''': Specifies one or more modules are operated on ONE common phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' (pilot signal) are distributed equally over the enabled modules. For example if you enable all 3 modules, the cable allows 32A but the EVSE only allows 16A, every module will run at 16/3=5.3A. Charging will start automatically as soon as proximity and a valid pilot signal is detected.
* '''Type2-3P''': Specifies each module is connected to a different phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' are allowed for each module.
* '''Type1''': Like '''Type2''' but ''cablelim'' is always assumed 40A.
* '''Manual''': Specifies one or more modules are operated on ONE common phase, power is distributed like in '''Type2''' mode. Charging starts as soon as the enable pin "D1" goes high. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.
* '''Manual-3P''': Specifies that each module is connected to a different phase of 3-phase outlet. Each module is allowed ''iaclim'' AC current. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.

==== cancontrol ====
When on, expect charging instructions via CAN message 0x102 as described above. Charging will start when the enable bit is set. when no CAN message is received for 1s, charging will stop. Note that the digital enable input "D1" also needs to high to allow charging. Also the autostart conditions apply when enabled.

==== idckp/idcki ====
Can be used to tune the control loop of the DC current PI controller.

==== pin ====
Software pin, obtained by registration.

ZombieVerter VCU

2021-10-18T18:27:41Z

EV Builder: /* Hardware */

'''<big>Now available for general sale [https://www.evbmw.com/index.php/evbmw-webshop/vcu-boards here].</big>'''

'''Development continues''' and you can
[https://openinverter.org/forum/viewtopic.php?f=3&t=1277 follow and contribute along with the development here on the forum]

[https://openinverter.org/forum/viewtopic.php?f=3&t=1696 '''Support''' is available via a separate thread on the forum]

== Introduction ==
Rather than crack open inverters and swap components about to drive them, what if we simply send them the messages they're expecting? This has been the case with a couple of existing designs (Nissan leaf inverter and GS450H) and thanks to the SAM3X8E microcontroller no longer being stocked by JLCPCB this project looks to take it further.

So rather than driving an inverter powerstage this version sends CAN for the Leaf inverter or Sync serial for the GS450H and of course can be expanded to any number of others. This will be the default firmware for all vcu products from now on and future hardware will support future fun packed stuff like FLEXRAY!!!

It's basically an <s>rip off</s> homage and builds on other people's hard work in the shape of the following projects

* [https://github.com/jsphuebner/stm32-car STM32-CAR project]
* [https://github.com/jsphuebner/stm32-sine Openinverter]
* [https://github.com/Isaac96/SimpleISA ISA library]
* Leaf inverter driver by Celeron55

What we have as of now is the openinverter wrapper with things like :

* Throttle cal and mapping,
* Precharge and contactor control,
* Temp derating,
* BMS limits,
* for/rev/neutral control,
* Graphing and monitoring,
* Firmware updates via the web interface,
* Cruise control,
* Fuel gauge driver,
* etc

==Hardware==
So you've ordered your kit, first things first, watch the following video to assemble it.

Due to chip shortages (written summer 2021) the board isn't fully assembled so you will need to do some soldering, or take it to a local phone repair shop (or similar) who'll find soldering at this scale like playing with Duplo.

'''The enclosure kit links:'''

Enclosure Kit with Header, connector and pins :

https://www.aliexpress.com/item/32857771975.html?spm=a2g0s.9042311.0.0.39f24c4dWOmGPE

Prewired connector with 3M leads :

https://www.aliexpress.com/item/4001213569338.html?spm=a2g0o.cart.0.0.366c3c00qhBvGO&mp=1

<youtube>https://www.youtube.com/watch?v=geZuIbGHh30</youtube>

Note that in addition to the VCU, the inverter and transmission, you will require a specific canbus connected shunt: [[Isabellenhütte Heusler]]

Wiring information for the system, connector pinouts etc can be found here: [[Lexus GS450h Inverter]]

'''Pin Out Diagram'''

[[File:ZombieVerter VCU V1 cable side pinout.jpg|thumb|alt=|VCU pinout diagram |none]]
[[File:Zomb-con-et.png|link=link=Special:FilePath/Zomb-con-et.png|none|thumb|332x332px|List of connections to system components]]

'''Note''': In the software port 0 = EXT2 and port 1 = EXT

== Software==

https://github.com/damienmaguire/Stm32-vcu/tree/LIM_ST107
==Supported OEM Hardware==

*Nissan Leaf Gen1/2/3 Inverter/ motor
*nissan leaf gen 2 drive stack (inverter, dcdc, charger) gen 3 coming soon

*[[Lexus GS450h Inverter|Lexus GS450H inverter / gearbox via sync serial]]
* Toyota Prius/Yaris/Auris Gen 3 inverters via sync serial
* chevy volt HV water heater
*BMW E46 CAN support
*BMW E39 CAN support
*BMW E65 CAN Support
*CCS DC Fast Charge via BMW i3 LIM

BMW I3 Fast Charging LIM Module

2021-07-08T19:42:24Z

EV Builder:

The BMW LIM module is a CCS, CHAdeMO and AC charging controller. It is used to communicate between the vehicle and the public charging infrastructure, to allow fast charging to occur.

As these can be found affordably on eBay and from auto wreckers, they have been pursued as an open-source charger-interface project.

==External links==
[https://openinverter.org/forum/viewtopic.php?t=1196 Forum discussion]

[https://github.com/damienmaguire/BMW-i3-CCS github.com/damienmaguire/BMW-i3-CCS]

> [https://github.com/damienmaguire/BMW-i3-CCS/tree/main/CAN_Logs CAN logs]

> [https://github.com/damienmaguire/Stm32-vcu/blob/ACDC_LIM/src/i3LIM.cpp STM32 VCU software]

> [https://github.com/damienmaguire/BMW-i3-CCS/blob/main/i3_LIM_dbc1.dbc I3 LIM CAN dbc1]

[https://openinverter.org/forum/download/file.php?id=9509 BMW I3 HV components]

[http://tesla.o.auroraobjects.eu/Design_Guide_Combined_Charging_System_V3_1_1.pdf Design Guide for Combined Charging System (2015)]

== LIM versions ==
Only AC_DCO versions work for CCS. (Check if you have a MAC address on the label!)
{| class="wikitable"
|+LIM versions
!SN
!IEC 61851
J1772 (AC)
!DIN 70121
!ISO 15118
!ISO 15118-20
!Cars
!Used until
!Tested
|-
|61 35 9 346 827
|x
|x
|
|
|BMW i3
|
|
|-
|61 35 9 346 820
|x
|x
|
|
|BMW i3
|
|
|-
|61 35 9 353 646
|x
|x
|
|
|BMW i3
|Jul 2014
|x
|-
|61 35 9 380 352
|x
|x
|?
|
|BMW i3
|Nov 2015
|
|-
|61 35 6 805 847
|x
|x
|?
|
|BMW i3
|Jul 2016
|
|-
|61 35 9 494 498
|x
|x
|?
|
|BMW i3
|2018?
|x
|-
|61 35 9 470 199
|x
|x
|?
|
|BMW i3
|?
|
|-
|61 35 9 454 319
|x
|x
|x
|?
|BMW i3
Mini cooper SE
|now
|
|}
The LIM's are available new from BMW spare parts suppliers for € 240 but there might be some programming/codeing necessary before the unit behaves like the ones used during development of the solution.

=== Power Limits ===
The limits for pre 2017/26 (Week 26 of 2017) are 0V-500V 0A-250A, post 2017/27 (Week 27 of 2017) 0V-1000V -500A-+500A.

This probably indicates when they moved from DIN 70121 only to ISO 15118.

==Connectors and Pinouts==

[[File:BMW_I3_CCS_Labelled.png|thumb|BMW i3 LIM CCS Charging Module]]All connectors are available at https://www.auto-click.co.uk/ worldwide.
{| class="wikitable"
|+Connector Key (left to right)
!Label
!Description
!Compatible Plugs
|-
|4B
|12 Pin Connector
|BMW 61138373632
Audi 4E0 972 713

TE 1534152-1 / 1534151-1
|-
|3B
| 8 Pin Connector (CHAdeMO models only)
|BMW 61138364624

Audi 4F0 972 708

TE 1-1534229-1
|-
| 1B
|16 Pin Connector
|Hirschmann 805-587-545
|-
|2B
|6 Pin Connector
| BMW 61138383300
Audi 7M0 973 119

TE 1-967616-1
|-
|X
| Replacement Pins
|5-962885-1
|-
|X
|Rubber Seal
|1-967067-1
|}
[[File:CCS setup LIM 2-03.png|none|thumb|800x800px|LIM pinout]]
{| class="wikitable"
|+
1B Pinout:
!Pin #
!Function
!Description
|-
|1B-1
| -
|
|-
|1B-2
|<nowiki>-</nowiki>
|
|-
|1B-3
|LED_M
|Lighting Charge Socket? (Not necessary)
|-
|1B-4
|LOCK_MOT+
|Charge Inlet Lock Motor
|-
|1B-5
|LOCK_MOT-
|Charge Inlet Lock Motor
|-
|1B-6
| CAN_H
|Powertrain CAN
|-
| 1B-7
|CAN_L
|Powertrain CAN
|-
|1B-8
|IGN
|Wake up signal +12V (ignition, contact 15)
|-
|1B-9
|VCC
|Constant Power +12V
|-
|1B-10
|GND
|Ground
|-
|1B-11
|<nowiki>-</nowiki>
|
|-
|1B-12
|<nowiki>-</nowiki>
|
|-
|1B-13
| -
|
|-
|1B-14
| -
|Internally connected to GND
|-
|1B-15
|CHARGE_E
|Goes to KLE. Guessing this is charge enabled signal for the in car charger? or drive interlock signal?
|-
|1B-16
|LOCK_FB
|Charge Inlet Lock Feedback (1k unlocked, 11k locked?)
|}
{| class="wikitable"
|+2B Pinout:
!Pin #
!Function
!Description
|-
|2B-1
|CP
|Pilot (Charge Inlet)
|-
|2B-2
|PP
|Proxy (Charge Inlet)
|-
|2B-3
|Jumper
|Connected to Pin 4
|-
|2B-4
|Jumper
|Connected to Pin 3
|-
|2B-5
|GND
|Ground (Charge Inlet)
|-
|2B-6
|
|US CCS1 version connected to 2B-2
|}

3B Pinout:

- N/A (for CHAdeMO only)
{| class="wikitable"
|+4B Pinout:
! Pin #
!Function
!Description
|-
|4B-1
| POS_CONT+
|Positive HV Contactor Control (Contactor coil resistance needs to be ~15 ohms)
|-
|4B-2
|NEG_CONT+
|Negative HV Contactor Control
|-
|4B-3
|POS_CONT-
|Positive HV Contactor Control
|-
|4B-4
|NEG_CONT-
|Negative HV Contactor Control
|-
|4B-5
|U_HV_DC
|Charge Inlet DC Voltage (current input 3-20mA?)
|-
|4B-6
|LED_RT
|Charge Status Light
|-
|4B-7
|LED_GN
|Charge Status Light
|-
|4B-8
|LED_BL
|Charge Status Light
|-
|4B-9
|LED_GND
|Charge Status Light Ground
|-
|4B-10
|COV_MOT-
|Charge Inlet Cover Motor (Not necessary)
|-
|4B-11
|COV_MOT+
|Charge Inlet Cover Motor (Not necessary)
|-
|4B-12
|COV_FB
|Charge Inlet Cover Feedback (GND if open)
|}

== Wiring Diagram ==
[[File:CCS setup LIM-01.png|thumb|1000x1000px|alt=|Wiring LIM electric vehicle charge controller|none]]

== Required messages ==
this list has to be cleaned up once we know which messages are actually necessary for the LIM.
{| class="wikitable"
|+Power Train CAN messages [500kbps]
!ID
!Function
!interval
!Notes
|-
|0x112
|BMS msg.
|10ms
|
|-
|0x1A1
|Vehicle speed
|20ms
|
|-
|0x3E9
|Main LIM control
|200ms
|
|-
|0x431
|Battery info
|200ms
|needed but does not control anything
|-
|0x03C
|Vehicle status
|200ms
|
|-
|0x2A0
|Central locking
|200ms
|
|-
|0x397
|OBD
|200ms
|
|-
|0x3F9
|Engine info
|200ms
|Rex?
|-
|0x3A0
|Vehicle condition
|200ms
|
|-
|0x330
|Range info
|200ms
|
|-
|0x432
|BMS SoC
|200ms
|
|-
|0x51A
|Network management
|200ms
|
|-
|0x540
|Network management 2
|200ms
|
|-
|0x512
|Network management edme
|200ms
|
|-
|0x560
|Network management kombi
|200ms
|
|-
|0x510
|Network management zgw
|200ms
|
|-
|0x328
|Counter
|1s
|
|-
|0x3E8
|OBD reset
|1s
|
|-
|0x2FA
|Lim DC charge command 3.
|1s
|
|-
|0x12F
|Wake up
|100ms
|
|-
|0x2FC
|Charge flap control
|100ms
|
|-
|0x2F1
|Lim DC charge command 2.
|100ms
|}

== LIM peripheral boards ==

=== Isolated DC charge inlet voltage sense board ===
The LIM gets the inlet DC voltage from a board in the KLE.

This board needs to produce an isolated 3-20mA current signal from the high voltage DC voltage.
[[File:Voltage measure board.jpg|none|thumb|isolated DC Voltage sense board by muehlpower]]

=== Large fast charging contactor control board ===
The LIM probably measures the current draw of the pos and neg fast charging contactors which makes it a bit harder to use large Gigavac contactors with economiser.

We need a relay board with resistors to simulate the original relais coils which have ~15 ohms (@14V ~840mA).

Further investigation is needed to find out if the LIM also detects a contactor failure from the current draw profile.

=== Duosida inlet lock driver ===
The i3 has a quite expensive Phoenix CCS inlet and it would be nice to be able to use the cheaper Duosida CCS inlets.

The charge inlet lock should work with the Duosida lock as well but the feedback (1k unlocked, 11k locked) is a bit different which requires some additional resistors.
[[File:CCS setup LIM 2-02.png|none|thumb|CCS inlet lock]]

== CCS charging sequence ==
[https://www.researchgate.net/profile/Ali-Bahrami-12/publication/338586995/figure/fig4/AS:925252242636800@1597608733638/CCS-Charging-sequence.jpg CCS-Charging-sequence.jpg]

This document actually covers Fast and Smart Charging Solutions for Full Size Urban Heavy Duty Applications but since most of the protocols used are similar it has comparable sequence diagrams with description for '''normal start up''', '''normal shutdown''', '''DC supply initiated emergency''' '''stop''' and '''EV initiated emergency stop'''.

https://assured-project.eu/storage/files/assured-10-interoperability-reference.pdf

== Observations ==
VIN Numbers is not required for AC or DC fast charging to function

Functional LIMs have come from vehicles where the Air Bags have deployed, indicating that the module still works after a "Safety" event has occurred.

== LIM board components ==
{| class="wikitable"
|+components
!Chip
!Description
!Function
!Datasheet
|-
|Renesas V850E2/FG4
|32-bit Single-Chip Microcontroller
|main MCU
|https://www.renesas.com/us/en/document/dst/data-sheet-v850e2fg4
|-
|Qualcomm QCA7000
|HomePlug® Green PHY, single chip solution
|PLC Green PHY
|https://openinverter.org/forum/download/file.php?id=9611
|-
|Infineon TLE 7263E
|Integrated HS-CAN, LIN, LDO and HS Switch, System Basis Chip
|CAN, 2xLDO, wake-up
|https://docs.rs-online.com/db13/0900766b814d680b.pdf
|-
|TI SN74LVC2T45-Q1
|Dual-Bit Dual Supply Transceiver with Configurable Voltage Translation
|
|https://www.ti.com/lit/gpn/sn74lvc2t45-q1
|-
|NXP 74LVC1T45
|Dual supply translating transceiver
|
|https://datasheetspdf.com/pdf-file/648034/NXP/74LVC1T45/1
|-
|STM L9951XP
|Actuator driver
|inlet lock motor
|https://www.st.com/resource/en/datasheet/l9951.pdf
|-
|STM TS321
|Low-Power Single Operational Amplifier
|
|https://www.ti.com/lit/gpn/ts321
|-
|TI LM2902
|Quadruple general-purpose operational amplifier
|
|https://www.ti.com/lit/gpn/lm2902
|-
|STM VNQ5E250AJ-E
|Quad channel high-side driver with analog current sense
|LEDs?, contactors?
|https://www.st.com/resource/en/datasheet/vnq5e250aj-e.pdf
|}
*

Chevrolet Volt DC/DC Converter

2021-06-17T05:50:16Z

EV Builder: Created page with " Chevy Volt DC-DC converter Ratings: Model number MSE465D (2012 and earlier) and MSE716 (2013-?). Input: 350Vdc nominal 260V-420Vdc Output: 12Vdc @165A, 2.2KW Efficiency:..."

Chevy Volt DC-DC converter

Ratings:
Model number MSE465D (2012 and earlier) and MSE716 (2013-?).
Input: 350Vdc nominal 260V-420Vdc
Output: 12Vdc @165A, 2.2KW
Efficiency: >90% above 40A output.
Dimensions: 13” X 9” X 3.5” (including mounting feet and factory installed plastic air duct)
Weight: ??? (including factory installed plastic air duct)

DC-DC functional Overview
The Chevy Volt DC-DC converter is a high voltage to low voltage DC-DC converter and goes by several names including “APM (Auxiliary Power Module)” and “14V Power Module”. It is manufactured by TDK and is CAN controlled, and air cooled. It requires an external fan to provide the necessary air cooling for operation. In the Volt the air cooling was supplied by a blower that was ducted to the heatsink. In tests outside the vehicle it was found that by removing the plastic duct, a 120mm fan blowing onto the heatsink provides adequate cooling. The converter is not waterproof and was mounted inside the trunk of the vehicle. It needs both hardwired enable inputs and CAN control to function. The Ignition and Accessory inputs need to be connected to +12V and CAN communication established before it will turn on. The CAN data necessary to command the converter is a single CAN message at ID 0x1D4. This message commands both an enable and the voltage command. Placing a value of 0xA0 in byte 0 will turn the DC-DC on and a value of 0x00 will turn it off. If CAN communication is lost to the DC-DC after it has been initially commanded to turn on, it will remain on but drop to 13.5Vdc. It will then remain on until the ignition and accessory inputs are disconnected from 12V. Testing had been performed on the MSE465 model and the CAN documentation herein verified to be correct. The MSE716 is assumed to be the same but has yet to be verified.

Connectors:
There are three connection points on the DC-DC converter. The High voltage input connector, the low voltage output studs, and the low voltage IO connector.
The low voltage output is two M8 studs, one for power and the other for chassis ground. It is recommended to use a minimum size of 1awg wire for these connections for the full 165A current rating.
On the MSE465 the high voltage input is made by a pair of orange wires about 2 feet long which terminate in an Orange Delphi connector part number 13861584. The connector that would mate to this would be a Delphi part number 13756860. The orange with red stripe is the positive and the orange with the black stripe is the negative. Both of these wires are shielded, so attention is needed if the connector is cut and stripped so that high voltage is not applied to the shield. The Delphi connectors are very difficult to obtain. It is assumed that most users will either cut the existing connector off and use a commonly available connector or splice them to lengthen the wires. Another method for connecting the HV DC input is to replace the orange wires completely. With the cover removed, the orange wires simply connect to the PCB using ring terminals and M4 screws. Removing the cover will have no effect on it’s weatherproofing. The screws holding the cover on are T-30 security head M6x20mm.
On the MSE716 the high voltage DC input is made by an Orange Delphi connector mounted directly on the case. The connector on the case is Delphi part number 13743443. The correct mating connector is Delphi part number 13861584. Coincidentally the required mating connector is the one that comes attached to the MSE465. It would make no sense, but the MSE465 would plug directly into the MSE716 as the connectors are the same but opposite gender.
The low voltage IO connector is a 10 pin 0.1” spacing connector on both the MSE465 and MSE716. The mating connector part number is AIT2PB-10P-2AK and pins are part number SAIT-A02T-M064, both of which can be sourced from Mouser. Pins 1,6,7,8 were used to simply provide termination in the vehicle. Pin 1 was connected to pin 8 and pin 6 connected to pin 7. If the DC-DC converter as not the endpoint of the CAN network, then these pins can be left unconnected.

Pin 1 termination resistor
Pin 2 CAN Low
Pin 3 CAN High
Pin 4 NC
Pin 5 Ignition
Pin 6 termination resistor
Pin 7 CAN Low (same as pin 2)
Pin 8 CAN High (same as pin 3)
Pin 9 NC
Pin 10 Accessory

CAN Data:

The CAN data bus is at 500K and uses 11 bit ID’s.
In tests it seemed adequate to transmit the command at a rate of 100ms and the DC-DC didn’t seem to object to this.

Command ID 0x1D4 (2 byte message)
Byte 0
Bit 0 ?
Bit 1 ?
Bit 2 ?
Bit 3 ?
Bit 4 ?
Bit 5 DC-DC enable 1. A 1 is this bit enables the DC-DC, a 0 disables it.
Bit 6 ?
Bit 7 DC-DC enable 2. A 1 is this bit enables the DC-DC, a 0 disables it.

Byte 1 Output Voltage Command
The output voltage setpoint that the DC-DC is to regulate.
The scaling seems to be desired voltage * 12.7.
For example, to command 13.8V, you would send 13.8*12.7=175=0xAF

Feedback ID 0x1D6 (7 byte message)
Byte 0 ?

Byte 1 ?

Byte 2 LV Output Voltage
The DC voltage as measured on the output.
The value is obtained by dividing by 12.7. For example if the value is 0xAC then
The voltage would be 0xAC=172 / 12.7 =13.5VDC

Byte 3 Coolant or baseplate temperature 1
Temperature in degrees C with a -40C offset.
A value of 0x55 = 85 = 45 degrees Celsius (85-40).

Byte 4 Coolant or baseplate temperature 2
Temperature in degrees C with a -40C offset.
A value of 0x55 = 85 = 45 degrees Celsius (85-40).

Byte 5 LV output Current
The output current of the DC-DC converter.
The value is scaled 1:1, so a value of 0x55 = 85ADC

Byte 6 ?

Feedback ID 0x495 (8 byte message)
Byte 0 ?

Byte 1 ?

Byte 2 ?

Byte 3 ?

Byte 4 ?

Byte 5 ?

Byte 6 ?

Byte 7 ?

Efficiency:

Reference photos:
Here are two pictures of the DC-DC converter model MSE465 indicating the locations for the HV DC input, LV DC output and the LV IO connector.

Here are three pictures of the DC-DC converter model MSE716 indicating the locations for the HV DC input, LV DC output and the LV IO connector.

Here is a picture with the MSE465 cover removed. This illustrates how the HV DC wires are terminated inside the converter on the MSE465.

Here is a picture with the MSE716 cover removed. This illustrates how the HV DC wires are terminated inside the converter on the MSE716.

Here are two pictures of the mating IO connector.

Suggested wiring diagram:

Tesla Model S/X GEN2 Charger

2021-04-11T22:37:58Z

EV Builder: /* Charger connection */

The Tesla GEN2 is a single/three phase 10kW AC charger that was fitted in the Model S from 2012 until it was replaced in the 2016 'facelift' model with GEN3.

One or two GEN2 chargers are installed beneath the rear seats.

"[https://openinverter.org/forum/viewtopic.php?f=10&t=78&p=9994#p9994 Running a Tesla charger at much under 200v dc will cause it to explode. Yes I know the label says 50 to 450v but it lies. Yes I blew one up discovering this.]"

Charger Dimensions: 500x300x100mm

== Replacement control boards ==
replacement control board https://github.com/damienmaguire/Tesla-Charger

v5 kit: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-kit

v5 partially built board: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-partially-built

== Charger connection ==
[[File:Tesla Charger Logic connections.jpg|none|thumb|607x607px|
{| class="wikitable"
!A1
!A2
!A3
!A4
!A5
!
!B1
!B2
!B3
!B4
!B5
!B6
|-
|OUT2 - AC present
|
|D1 - enable
|
|
|
|12V supply
|
|
|CANH
|Control Pilot
|
|-
!A6
!A7
!A9
!A10
!A11
!
!B7
!B8
!B9
!B10
!B11
!B12
|-
|OUT1 - HV enable
|
|
|
|
|
|GND
|
|
|CANL
|Proximity
|
|}
[[File:AC DC Connections.jpg|left|thumb|600x600px]]]]

=== Connector part numbers ===
AC and DC power connections - housing 044441-2006, pins 0433753001

Logic connectors Molex: housing 10 way 19418-0014, 12 way 19418-0026, pins 33012-2001

== Programing ==
you'll need a st-link v2 smt32 programmer. Unofficial ones are cheaply available from amazon and ebay.

st-link programming utility: https://www.st.com/en/development-tools/stsw-link004.html

stm32_loader.hex https://openinverter.org/forum/viewtopic.php?f=7&t=1119

==== Two options: ====
# Charger_gen2_v5.hex https://github.com/damienmaguire/Tesla-Charger/tree/master/V5/Software/Binary
# Or commercial software: https://openinverter.org/files/stm32_charger.zip

Click "Target --> Connect" from top menu. You want to see the screen get filled with a data dump of symbols. In the upper right of the screen you can see it identified the device.

In the main viewing window are multiple tabs, click the "Binary File" tab to select it.

This will ask to open a file, you choose: "stm32_loader.hex" from OpenInverter.org, download ahead of time. This will change what shows up in the viewing window.

Click "Target --> Program and Verify" from the top menu. This pops up a window, and you can probably just click "Start" on that window. This programs the STM32 chip with the stm32_loader.hex file.

The STM32 on your v5 gen2 Tesla charger Board can now load other files.

You can close the stm32_loader.hex tab, and go back to the "Binary File" tab, which will ask to open another file.

You choose: "Charger_Gen2_v5.hex"

Same as last time, click "Target --> Program and Verify" from the top menu. And click Start.

The STM32 on your v5 gen2 Tesla charger Board now also has the software to run.

You are now done with the ST-Link USB dongle, it's no longer needed.

Future updates can be done via wifi. (must have esp8266 wifi module programed https://openinverter.org/forum/viewtopic.php?f=5&t=8 )

== External CAN bus ==
[[File:Gen2 Charger V5aB2 logic board.jpg|thumb|Gen2 Charger V5aB2 logic board with CAN wired to external pins]]
The V5aB2 version of the board has no connection to the external CAN bus (V5aB3 has) but you can add it with to bodge wires as shown in the picture. You will find CANH and CANL on the 3 pin header underneath the wifi module. Route them over to CONN6 as shown. CONN2.1 (CANH) is connected to CONN6.24, CONN2.2 (CANL) to CONN6.26.

The upcoming revision will not need this modification.

If the charger is the first/last device on your CAN bus there is nothing else to do. If it is somewhere in the middle you have to remove the bus termination resistor R1.

Before doing this be aware that all internal CAN traffic is also seen on the external CAN bus. The following IDs are already used and mustn't used by any other device on the bus:

207, 209, 217, 219, 227, 229, 237, 239, 247, 249, 327, 329, 347, 349, 357, 359, 367, 368, 369, 377, 379, 537, 539, 717, 719, 20B, 21B, 22B, 23B, 24B, 32B, 34B, 35B, 36B, 37B, 42C, 43C, 44C, 45C, 53B, 71B.

==== Functionality of external CAN bus ====
With the CAN bus now available externally you can remote control your charger via CAN and also receive some values from it. The mapping is similar to the CHAdeMO CAN protocol. The feature is only available in the commercial firmware.
{| class="wikitable"
|+Charger CAN protocol
!ID
!Direction
!Byte 0
!Byte 1
!Byte 2
!Byte 3
!Byte 4
!Byte 5
!Byte 6
!Byte 7
|-
|0x102
|Receive by charger
|
|DC voltage limit MSB
|DC voltage limit LSB
|DC current set point
|==1 enable charging
|SoC
|
|
|-
|0x108
|Transmit by charger
|Version=0
|Max DC voltage MSB
|Max DC voltage LSB
|Max DC current
|
|
|
|
|-
|0x109
|Transmit by charger
|Version=0
|DC voltage MSB
|DC voltage LSB
|DC current
|''0 when off, 5 when charging''
Doesn't belong here, will

move to Byte 5 after 1.06.R!
|Like Byte 4
for versions

after 1.06.R
|
|
|}
Example: transmit "0x102 # 0 0x1 0x86 0x14 0x1 50 0 0" to enable charging up to a voltage of 390V and a DC current of 20A, report SoC of 50%.[[File:Parameter view of commercial firmware.png|thumb|Parameter view of commercial firmware]]

== Commercial charger firmware ==
In addition to the open source firmware there is also a commercial firmware. It adds advanced features:
* Support for the standard open inverter web interface
* Parameter handling as known from the inverter firmware (see picture)
* Spot value handling like inverter including plotting, gauges, and logging
* Over the air update like inverter
* DC current control
* CAN control as described above
The firmware requires the board to be flashed with [https://github.com/jsphuebner/tumanako-inverter-fw-bootloader/releases stm32_loader.hex]. An Olimex MOD-ESP8266 must be programmed with the [https://github.com/jsphuebner/esp8266-web-interface openinverter web interface]. See [https://openinverter.org/forum/viewtopic.php?f=5&t=8 here] how to flash it to the module. With that done, future updates will happen via the web interface.

=== Registration ===
If you bought a fully assembled V5aB3 board from the EVBMW webshop you can skip this step.
[[File:Tesla Charger Serial.png|frame]]
The firmware will work without registration but charging time is limited to 5 minutes. To overcome this, a board-specific pin must be bought. In order to do this the firmware and web interface must be installed and working.

Go to the [https://openinverter.org/shop/index.php?route=product/product&product_id=67 openinverter webshop] and check out as many pins as you need. When checking out add the serial number(s) of your board(s) in the order option. You will find the serial number on the bottom of the page as last spot value.

You will then receive an email containing one pin for each board. Enter the pin in the web interface in the "pin" parameter. When the pin is correct it will be automatically saved to flash and your board is ready to be used.

== Commercial firmware usage manual ==
=== Parameters ===
The firmware exports a number of parameters to be modified by the user. All modifications are temporary until you hit "Save Parameters to Flash" at the top of the page.

We will go over all of them.

==== idclim ====
This parameter is mainly relevant for CAN operation. It is transmitted via CAN to let the vehicle know how much DC current the charger can deliver. Each charger module maxes out at about 15.5A so the maximum total charging current is 46.5A. Since the total power is also limited to 10 kW it depends on the output voltage as well. There is no need to be exact on this, the firmware will automatically limit the AC input current to each module to the hardware maximum.

==== iaclim ====
This is the per-module AC current limit. When charging from a 3-phase outlet (see below) each module will be allowed this current. When charging from single phase, this current will be equally distributed between the enabled chargers.

==== idcspnt ====
DC charge current limit. An additional limit to charge power. It is also mapped to the CAN bus so if you have a BMS that calculates a maximum charge current you can forward this to the charger.

==== chargerena ====
Here you can program which charger modules you want to enable. It is a flag channel, so 1 means "Module 1 enabled", 2 means "Module 2 enabled" and 4 means "Module 3 enabled". Combining these flags enables multiple modules, e.g. 5=4+1 enables modules 1 and 3. 7=4+2+1 enables all modules. This is the default. The parameter can not be directly changed, but you have to type "set chargerena 5" next to where it says "Send Custom Command" on the top of the page and then press the button.

==== udcspnt ====
This modifies the constant voltage setpoint of the chargers. This value is transmitted directly to the modules without further processing. It lets you add a constant voltage phase to your charge process. When reaching this voltage the chargers will control the current to maintain this voltage.

==== udclim ====
This parameters specifies a charge end condition. When the voltage is hit the charging process stops and will not resume until you re-plug the charge cable. If you wish to add a constant voltage phase and control charge end by your BMS, set this parameter higher than udcspnt.

==== timelim ====
Another charge end condition. Charge only for the specified time in minutes.

==== inputype ====
* '''Type2''': Specifies one or more modules are operated on ONE common phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' (pilot signal) are distributed equally over the enabled modules. For example if you enable all 3 modules, the cable allows 32A but the EVSE only allows 16A, every module will run at 16/3=5.3A. Charging will start automatically as soon as proximity and a valid pilot signal is detected.
* '''Type2-3P''': Specifies each module is connected to a different phase of a Type-2 EVSE. The limits imposed by ''cablelim'' and ''evselim'' are allowed for each module.
* '''Type1''': Like '''Type2''' but ''cablelim'' is always assumed 40A.
* '''Manual''': Specifies one or more modules are operated on ONE common phase, power is distributed like in '''Type2''' mode. Charging starts as soon as the enable pin "D1" goes high. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.
* '''Manual-3P''': Specifies that each module is connected to a different phase of 3-phase outlet. Each module is allowed ''iaclim'' AC current. ''iaclim'' MUST be configured to the limits of your AC source as there is no automatic detection like in Type1 or Type2 modes.

==== cancontrol ====
When on, expect charging instructions via CAN message 0x102 as described above. Charging will start when the enable bit is set. when no CAN message is received for 1s, charging will stop. Note that the digital enable input "D1" also needs to high to allow charging. Also the autostart conditions apply when enabled.

==== idckp/idcki ====
Can be used to tune the control loop of the DC current PI controller.

==== pin ====
Software pin, obtained by registration.

File:AC DC Connections.jpg

2021-04-11T22:36:23Z

EV Builder:

AC DC Connections