Tesla Model 3 and MAX BMS
Overview
The Tesla Model 3 BMS controller
(Model 3 BATMAN details to be added)
It also has the compatibility with some MAX chip based battery modules. Tested with the Stellantis/PSA/Opel eCMP platform.
Can be purchased here: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-model-3-bms
Pinout
1M : Permanent 12v via 2 Amp fuse
1L : Gnd
1K – CAN High
1J – CAN Low
1H – ISOSPI+ Model 3 bms daisy chain
1G – ISOSPI- Model 3 bms daisy chain
1F – Rx for Model S/X slave boards
1E – Tx for Model S/X slave boards
1D – 12v digital input 2
1C – 12v digital input 1
1B – Analog input (e.g. analog current sensor)
2M – Digital Out 2. Low side switch.
2L – Digital Out 1. Low side switch.
4M – 5V Output (e.g. Hall effect current sensor)
4M – 5V Ground.
4K - MAX TxP - RxP
4J - MAX TxN - RxN
4H - MAX RxP - TxP
4G - MAX RxN - TxN
Connecting to Peugeot-208, Corsa E, etc. battery pack.
Module pinout
Pin 1 RXNL
Pin 2 blank
Pin 3 TXPL
Pin 4 blank
Pin 5 goes to pin 8 on Module 2
Pin 6 goes to pin 7 on Module 2
Pin 7 RXPL
Pin 8 TXNL
Pin 9 blank
Pin 10 goes to pin 3 on Module 2
Pin 11 blank
Pin 12 goes to pin 1 on Module 2
Connections from BMS to first module:
BMS pin 4K - Module pin 1
BMS pin 4J - Module pin 7
BMS pin 4H - Module pin 9
BMS pin 4G - Module pin 2
At the end of the daisy chain Pin 5 loops back to Pin 12 and Pin 6 to Pin 10.
Forum and github links
https://openinverter.org/forum/viewtopic.php?t=2465