Technical description
Cells management
- Possibility to connect in series several BMS in order to manage a battery pack with a voltage up to 1000 Volts
- Management of 8 to 18 lithium cells in series* compatible with all cell technologies (NMC, LiFe, LiPo,…), +/- 5 mV of accuracy.
- Management of 6 NTC temperature sensors
- 3 digital measures used by the software
- 3 analogic measures used by the hardware redundancy
Protections
- Hardware redundancy for voltage and temperature measurements in order to reach a high level of safety (SIL2 of EN61508 standard)
- Overcharge and undercharge, tunable by software
- Overtemperature and undertemperature, tunable by software
- Overcurrent: 2 levels in discharge, 1 level in discharge tunable by software
- Short circuit hardware protection (resettable electronic fuse)
Balancing
- Passive balancing with a 150 mA bypass current per cell (on the BMS)
Power box
- Bidirectional measurement of the battery current with a hall effect sensor
- Charge and discharge management
- Power box management up to 750 A:
- Command of an external electromechanical contactor
- Command of a precharge circuit (included on the board)
- Possibility to control two additionnal contactors
Smart functions
- SOC and SOH calculation
- Advanced self-diagnostic of the board
- Communication by CAN bus 2.0B (opto-isolated)**
- Motor controller management by CAN bus
- Charger management by CAN bus
- Advanced supervision software
Power supply/consumption
- Supply of the BMS directly on the battery pack
- Low consumption in standby mode: < 500 µA
Mechanical format
- 100 mm x 180 mm x 12 mm
- Can be potted to be used in harsh environment
* Factory setting
** Requires an external 12 V power supply