Reply To: EV Batteries, How to look after them.

#130282
gothitjulie
Participant

    Hyundai Kona, BMS related recall

    https://static.nhtsa.gov/odi/rcl/2020/RCRIT-20V630-6812.pdf

     

    Fires because the BMS (Battery Management System) hasn’t been protecting the lithium ion cells properly during (rapid) charging.

    Trouble here is that BMS problems have been endemic with lithium batteries since people started using a BMS, & each new battery engineer seems to make the same old mistakes, usually the one where the balance leads can’t carry a high enough current to drop the over-voltage cells enough whilst the rest catch up, or, the circuit board can’t cope for the same reason, this time it seems the logic (ROM) is flawed.