Search found 23 matches

by Kutato72
Wed Jan 17, 2024 5:29 pm
Forum: BYD
Topic: BYD Atto3 as a Donor Vehicle
Replies: 4
Views: 809

Re: BYD Atto3 as a Donor Vehicle

For now, I wanted to understand its construction at a basic level and get to the point where the HV system, which was completely disabled due to the collision, would start. The car is already running, so maybe I will start logging this week, but I was not prepared for the fact that I would have to l...
by Kutato72
Tue Jan 16, 2024 9:39 pm
Forum: BYD
Topic: BYD Atto3 as a Donor Vehicle
Replies: 4
Views: 809

Re: BYD Atto3 as a Donor Vehicle

I have been studying the BYD Atto 3 for some time. Brutally modern development, not a Chinese joke. If you are not familiar with CAN buses, don't bother: there are dozens of CAN buses, because instead of a lot of electronics, there are only three "domain controllers" in it: the right, the ...
by Kutato72
Mon Jan 08, 2024 4:11 pm
Forum: Volvo
Topic: XC90 OBC
Replies: 6
Views: 3612

Re: XC90 OBC

I already have my own diagnostic software for it, which I can use to test it after repairs, but I didn't think that it is customary to write something like this here right away... I quickly made a screen save. Above in the middle, the Max. Voltage / Max. Current data is returned by the charger and ...
by Kutato72
Mon Jan 08, 2024 3:34 pm
Forum: Volvo
Topic: XC90 OBC
Replies: 6
Views: 3612

Re: XC90 OBC

I already have my own diagnostic software for it, which I can use to test it after repairs, but I didn't think that it is customary to write something like this here right away...
by Kutato72
Tue Apr 11, 2023 5:41 pm
Forum: Volvo
Topic: XC90 OBC
Replies: 6
Views: 3612

Re: XC90 OBC

I know how to fix it, I've already fixed a dozen of them; maybe even more. However, I haven't been able to start it on the desktop yet, it doesn't respond to any LOG. But it is almost certain that it will not even start without the standard Control Pilot (CP) signal. (It was manufactured here in Hun...
by Kutato72
Tue Jan 10, 2023 6:11 pm
Forum: Hyundai/Kia
Topic: Hyundai Kona powertrain components (PCAN)
Replies: 23
Views: 15504

Re: Hyundai Kona powertrain components (PCAN)

Well guess what, the autor is on the forum here already :D "Kutato72" Thanks for the mention, I am indeed here too, although my English is a bit weak. My writings about Kona are here in PDF format: Battery: https://varsanyipeter.hu/hyundai_kona_akku.pdf Inverter/OBC/DC-DC: https://varsany...
by Kutato72
Tue Nov 29, 2022 11:21 pm
Forum: Volvo
Topic: Volvo V60 battery pack
Replies: 43
Views: 20618

Re: Volvo V60 battery pack

I have already repaired dozens of batteries, so I can safely say: if the Volvo BMS sees the battery as bad, then it really is bad. You can clone the EEPROM content from a good battery to a bad one, but you won't get very far with it. The proven solution is to measure the capacity of all 10 modules o...
by Kutato72
Tue Nov 22, 2022 8:07 pm
Forum: Hyundai/Kia
Topic: Hyundai/Kia Batteries
Replies: 29
Views: 11794

Re: Hyundai/Kia Batteries

Hi folks. I came across some kia 64kW modules. They have neat cell wires comming from the module sides. There is a circuit on the sides and i am wondering if those wires are fused? I would like to use this modules with my active BMS and it balances at 1A. Too much? The cell terminals are protected ...
by Kutato72
Mon Nov 21, 2022 8:01 pm
Forum: Battery Managment (BMS)
Topic: BMS benchmarking and reverse engineering
Replies: 5
Views: 4523

Re: BMS benchmarking and reverse engineering

I have been doing what you just described here for five years. Will you have a job with it, though I don't know if it's any use? I have already written a lot about this topic to my clients, but unfortunately in Hungarian. I'm copying a material made by Google translate, so maybe the translation is b...
by Kutato72
Thu Nov 03, 2022 9:46 pm
Forum: Volvo
Topic: Volvo V60 battery pack
Replies: 43
Views: 20618

Re: Volvo V60 battery pack

I repair Volvo V60 PHEVs, and unfortunately recently I come across more and more batteries with cell defects or significantly degraded batteries. Unfortunately, I often see working batteries at unrealistically high prices on the Internet. Does anyone have any tips on where to get defective batteries...
by Kutato72
Sun Sep 11, 2022 5:43 pm
Forum: BMW
Topic: I bought a BMW 530e onboard battery charger - now what?
Replies: 44
Views: 9666

Re: I bought a BMW 530e onboard battery charger - now what?

The elongated version was produced here in Hungary, and it was also included in the Volvo XC90, redesigned and with different software. I know how to fix it, but not how to program it yet, even though I tried it for a while. :(
by Kutato72
Sun Jul 24, 2022 9:42 pm
Forum: Volvo
Topic: Volvo V60 battery pack
Replies: 43
Views: 20618

Re: Volvo V60 battery pack

I just wrote my own code to make it work. For balancing, the 0x1C control packet must be sent maximum every 2000 msec. The authorization signal is the 0x22 packet, which must be sent every 450 msec at most. But the balancing itself is started by the query packet 0x17, but in pulses, so it is worth i...
by Kutato72
Sat Apr 30, 2022 8:01 pm
Forum: BMW
Topic: I3 EME Internal Communication
Replies: 0
Views: 3117

I3 EME Internal Communication

If you want to listen to EME’s internal communications with the DC/DC converter and on-board charger, prepare pizzas and lots of cola for several days. - Works with 16-bit SPI transmission with 500 kHz clock - Transmits 80 words in a packet (i.e. 1280 bits) - Alternately sends a packet to the DC/DC ...
by Kutato72
Wed Mar 30, 2022 9:26 pm
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: ID.3 and other MEB battery packs in conversions
Replies: 70
Views: 25427

Re: ID.3 and other MEB battery packs in conversions

There are also fuses at the other end. He just couldn't fit a single photo.
by Kutato72
Wed Mar 30, 2022 7:41 pm
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: ID.3 and other MEB battery packs in conversions
Replies: 70
Views: 25427

Re: ID.3 and other MEB battery packs in conversions

Fuses. 1206 size SMD fuses in the LG Chem version.
by Kutato72
Tue Mar 29, 2022 9:13 pm
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: ID.3 and other MEB battery packs in conversions
Replies: 70
Views: 25427

Re: ID.3 and other MEB battery packs in conversions

They carry the end cells in duplicate because the BMS receives its supply voltage from one and measures the cell with the other. Thus, the jumps in the current consumption of the BMS do not interfere with the measurement. This solution is called the “Kelvin Connection”. https://www.voltech.com/suppo...
by Kutato72
Tue Mar 22, 2022 5:43 pm
Forum: Jaguar
Topic: Ranger rover 14.7kwh pack bms
Replies: 12
Views: 16227

Re: Ranger rover 14.7kwh pack bms

The Samsung SDI BMU panel has the MAX17841 driver chip, while the Jaguar / Range Rover battery has the MAX17823B BMS chip. In principle, they can talk to each other - but of course the factory software is not suitable for this.
by Kutato72
Mon Mar 21, 2022 6:34 pm
Forum: Hyundai/Kia
Topic: 64kwh Kona battery
Replies: 28
Views: 9099

Re: 64kwh Kona battery

For the MAX17845, both the pinout and the basic protocol are the same as the MAX17823B, but the self-diagnostic is different.
by Kutato72
Thu Mar 17, 2022 8:14 pm
Forum: Classifieds
Topic: Various EV parts for sale
Replies: 47
Views: 8409

Re: Various EV parts for sale

I am repairing these in Hungary. I'll fix two out of two for you if you figure out how to get here and get back to you.
by Kutato72
Thu Mar 17, 2022 5:30 pm
Forum: Hyundai/Kia
Topic: 64kwh Kona battery
Replies: 28
Views: 9099

Re: 64kwh Kona battery

The three types of battery modules have a total of eight (!) different connectors. Their illogical connection is a nightmare. The MAX17845 chip built into CMUs is top secret, with no datasheet, not a programming manual. And it uses an isoSPI bus anyway, not a CAN bus.
by Kutato72
Wed Mar 16, 2022 8:58 pm
Forum: Hyundai/Kia
Topic: 64kwh Kona battery
Replies: 28
Views: 9099

Re: 64kwh Kona battery

Based on the photos, you'll understand.
by Kutato72
Wed Mar 16, 2022 8:46 pm
Forum: Hyundai/Kia
Topic: 64kwh Kona battery
Replies: 28
Views: 9099

Re: 64kwh Kona battery

The length of the 10S3P and 15S2P modules is 480 mm (+15 mm mounting lugs), while the length of the 9S3P modules is 430 mm (+15 mm here as well). The modules are 105 mm high (+10 mm extra) and 360 mm wide. There is a 39 kWh "Economy" version from Hyundai Kona Electric, which contains 180 c...
by Kutato72
Sat Mar 12, 2022 8:24 pm
Forum: Hyundai/Kia
Topic: 800V Hyundai Ioniq 5 Battery
Replies: 13
Views: 6218

Re: 800V Hyundai Ioniq 5 Battery

I haven't seen it yet, but I'm guessing: - 6S2P bonded cells - Cell connections at both ends - One piece of BMU with part number 375A0-xxxx with MAX17841 based isoSPI bus - 8 CMUs with part number 375A1-xxxx, each with 2-2 MAX17845 chips - One MAX17845 chip handles 2 modules (12 cells), one CMU can ...