Search found 834 matches

by bexander
Thu Mar 28, 2024 5:42 am
Forum: General
Topic: How to test this giant fuse?
Replies: 2
Views: 42

Re: How to test this giant fuse?

Sounds to me like that fuse is blown.
If the fuse is not blown you should read 12.5V at boths sides of the fuse and the resistance across should be in milliohms.
by bexander
Sun Mar 17, 2024 6:05 pm
Forum: Projects
Topic: Volvo C30 with Leaf drivetrain
Replies: 35
Views: 4261

Re: Volvo C30 with Leaf drivetrain

barracuda816 wrote: Sun Mar 17, 2024 5:01 pm Is there any info on the MGR project? It's still something I think about doing from time to time. Tried the forum search with no luck.
viewtopic.php?t=912&hilit=clio
by bexander
Sun Mar 17, 2024 3:23 pm
Forum: Projects
Topic: Volvo C30 with Leaf drivetrain
Replies: 35
Views: 4261

Re: Volvo C30 with Leaf drivetrain

I realized I don't want a "modern" car with all its bells and whistles. I prefer an older more analog car.
On top of that there is the hassle with the immobilizer, that can be worked around but not in a way I liked.
If you like the car, go ahead. I think it will work well as an EV.
by bexander
Tue Feb 20, 2024 3:51 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

After Balancing ON cell current coming from cell to BMS (+70mA / 20second / good condition) but after this current coming from BMS to cell (-70mA 20second). These both directions are in the loop. This is normal and expected behavior. The slave chip (MAX17823) can not handle balancing adjecent cells...
by bexander
Tue Feb 20, 2024 5:07 am
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Hi, Is there any way to test the small BMS-slave units with MAX17845 chips from a KIA/Hyundai 64kWh battery to check if they are working? I did have a look at your code "BMS2_7_3_EDITED_3_2.ino" @bexander but it contains a lot of code and functions as I understand. I have a battery with b...
by bexander
Tue Feb 06, 2024 3:13 pm
Forum: Projects
Topic: [DRIVING] Renault Clio Electrique -97
Replies: 342
Views: 49798

Re: [DRIVING] Renault Clio Electrique -97

Yes, that is a good option. The downside is that the RX450h inverter is quite bulky and the ones I've found cost a lot more than the Yaris/Prius ones.
by bexander
Tue Feb 06, 2024 4:45 am
Forum: Projects
Topic: [DRIVING] Renault Clio Electrique -97
Replies: 342
Views: 49798

Re: [DRIVING] Renault Clio Electrique -97

Interesting. If I would give this another go I would start with sourcing a Yaris gearbox so I can test the inverter against it's original HW. That way it can only be SW. When I can confirm that's working I could test with MGR. BTW, that is also another issue, the Yaris inverter seem to change mid se...
by bexander
Mon Feb 05, 2024 12:39 pm
Forum: Projects
Topic: [DRIVING] Renault Clio Electrique -97
Replies: 342
Views: 49798

Re: [DRIVING] Renault Clio Electrique -97

Honestly, I can't remember if I got speed feedback or not but I "think" I did. It worked fine in one direction but not in the other. If the resolver is connected to MG1 while motor on MG2, would the motor spin at all?
Do you have a link to their attempts?
by bexander
Thu Jan 25, 2024 4:32 am
Forum: Toyota/Lexus
Topic: Toyota Auris and Yaris Inverter Logic board
Replies: 139
Views: 39273

Re: Toyota Auris and Yaris Inverter Logic board

The -5V is needed to run the inverter correctly so the IC14 need be populated.
by bexander
Sat Dec 30, 2023 4:36 pm
Forum: Charging
Topic: Communicate and control Eltek Flatpack 2 HE
Replies: 40
Views: 20893

Re: Communicate and control Eltek Flatpack 2 HE

How do you load it to test set current limit?
It will only limit set current down to 47V and below that the current is only limited by max output power.
With a battery connected this is usually not a problem but if using other loads it can be a severe limitation.
by bexander
Thu Nov 23, 2023 6:26 am
Forum: Battery Managment (BMS)
Topic: LTO battery management
Replies: 18
Views: 3064

Re: LTO battery management

by bexander
Sun Nov 19, 2023 12:01 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

I only go down to 3,5V/cell and at that voltage I get approx 80% or 19,8Ah with summer conditions (~20degC in the battery).
by bexander
Sat Nov 18, 2023 5:22 am
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

I'm using 24,8Ah as the total capacity.
by bexander
Thu Nov 16, 2023 12:13 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

No external power neede other than the battery cells.
Are you using the OEM wires and all modules connected? How does your RX lines look in the scope?
by bexander
Sun Nov 12, 2023 2:23 am
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Serch for "contactor error" in the code and try to figure out why this is triggered. Then work backwards from there.
Using analog read to determine inverter voltage? Are you measuring inverter voltage directly, without any kind of isolation interface?
by bexander
Sat Nov 11, 2023 5:54 am
Forum: Nissan
Topic: Mounting Leaf Gen2 motor/gearbox upside down?
Replies: 1
Views: 3224

Mounting Leaf Gen2 motor/gearbox upside down?

For a Leaf EM57 motor/gearbox combo, to get the diff in front of the motor there are a couple of examples fliping the motor 180 degrees sideways and running it in backwards. Is there anyone who have tried fliping it upside down instead, still running it in forward? Maybe not totaly upside down but 1...
by bexander
Fri Nov 10, 2023 4:20 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

I guess you could put the call to the "storeCellTemperature()" inside the 250ms function in the main loop, i.e after the "measureCellData();" call.
If you only have two thermistors you could use the MIN and MAX arduino functions.
by bexander
Wed Nov 08, 2023 12:40 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

bigmotherwhale wrote: Tue Nov 07, 2023 10:58 pm It seems that there is no hard high and low cut off in the existing code?
That is correct, it only triggers warnings. Hard cut offs has to be done by the driver.
by bexander
Sun Nov 05, 2023 5:03 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Got it working with my modules (3 at the moment). Not sure that i got all the hard coded bits. The split in cell layout in the original code is hard to code for, so I removed it void storeCellVoltage(uint8_t dataRegister, uint8_t readRegisterData[29]) and void storeCellTemperature(uint8_t readRegis...
by bexander
Thu Nov 02, 2023 5:22 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Looking at register 0x12 (MEASUREEN). If you want to set just bit D12, that corresponds to 0x1000 or translated to binary 0b 0001 0000 0000 0000. Every digit in hex coresponds to 4 bits in binary. D0 is the first digit, right most digit. D15 is the left most digit. If you want to set cell 1-8 enable...
by bexander
Thu Nov 02, 2023 3:31 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

That was the same as before so i went looking to find where the measurement was failing, after pouring over the datasheet I set mesureeen to 0x11FF and i got this: 1: 3682 3683 3684 3684 3684 3684 3682 3684 20 2: 3684 3683 3685 3684 3683 3682 3685 3683 20 3: 3684 3684 3684 3684 3684 3683 3684 3684 ...
by bexander
Wed Nov 01, 2023 11:30 am
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Try with this:
BMS2_7_3_EDITED_3_2.ino
(47.56 KiB) Downloaded 61 times
by bexander
Tue Oct 31, 2023 3:19 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

This is a bit strange and I suspect some hardware issue.
Have you checked the cell connections (wiring) for cell no 8 for all modules (max17823)?
Please also verify with a multimeter that the cell voltages are infact close to 3,68V / cell, for those no 8 cells?
by bexander
Tue Oct 31, 2023 2:03 pm
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

Try this for a better print out.
BMS2_7_3_EDITED_3_1.ino
(47.39 KiB) Downloaded 53 times
by bexander
Tue Oct 31, 2023 11:33 am
Forum: Hyundai/Kia
Topic: Kia Niro BMS
Replies: 146
Views: 31000

Re: Kia Niro BMS

I can't find anything obviuos at the moment so I have turned on the print out of all received data from readAllSlaves. Please run this and post the print outs. Will be a lot of data...
BMS2_7_3_EDITED_3.ino
(47.38 KiB) Downloaded 47 times