kolyandex
Posts: 3
Joined: Sat Feb 05, 2022 6:35 am

BMU firmware mods

Hi. I've started to reversing BMU firmware for able to increase real battery capacity in case of replacing battery unit from 48a/h to ~90a/h. Now i have correct data from BMU to vehicle CAN bus and diagnostics software. Flasher for BMU ECU also available.
If you're really interested for that awesome modification, contact me iam@kolyandex.su. I need to research the market :D

Image
Image
drcat
Posts: 24
Joined: Tue Dec 08, 2020 3:21 am

Re: BMU firmware mods

I've achieved the same result with a cheap CAN bridge viewtopic.php?f=23&t=4983
As a bonus, can allow deeper discharges for new chemistry like NMC
kolyandex
Posts: 3
Joined: Sat Feb 05, 2022 6:35 am

Re: BMU firmware mods

Today we flashed our first iMiev with a repackaged battery (CATL 102Ah), it seems to work and even drive.

Image
Pepin
Posts: 8
Joined: Wed Oct 28, 2020 2:26 am

Re: BMU firmware mods

kolyandex wrote:Today we flashed our first iMiev with a repackaged battery (CATL 102Ah), it seems to work and even drive.

Image
Hi. Are the CATL 102Ah cells, NCM or LIFEPO4?. Grade A?.
kolyandex
Posts: 3
Joined: Sat Feb 05, 2022 6:35 am

Re: BMU firmware mods

NMC
stoatwblr
Posts: 37
Joined: Tue Sep 28, 2021 12:17 pm

Re: BMU firmware mods

Have you chatted to the Oz Electric Vehicles guys?

They're using a MITM module at the moment to achieve the same goal but reprogramming the BMU is a much cleaner solution

As a side thought, it would be safer/more durable to use LiFePO4, - if this was done could the car handle the lower terminal voltage/higher motor current?

So many questions once this part of the puzzle is unlocked

Return to “Batteries and Battery Management”