Technical description
Cells management
- Management of 4 lithium cells in series, compatible with all cell technologies (NMC, LiFe, LiPo…)
- Management of 3 NTC temperature sensors
- 2 digital measurements used by the software
- 1 analog measurement used by the hardware redundancy
- Measurements accuracy:
- Cell voltages: +/- 5 mV
- Temperatures: +/- 1°C
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 charge tunable by software
- Short circuit hardware protection (resettable electronic fuse)
Balancing
- Passive balancing with a 500 mA bypass current per cell (on the BMS)
Power box
- Requires an external power box (contactors, hall effect current sensor)
- Bidirectional measurement of the battery current with an external hall effect sensor
- Power box management up to 750 A:
- Management of up to 3 external electromechanical contactors
- Precharge circuit included on the BMS
Smart functions
- SOC and SOH calculation
- Advanced self-diagnostic of the board
- Communication by CAN bus 2.0B
- Possibility to manage the motor controller and the charger
- Advanced supervision software
- Black box integrated with defaults history storage and life counters
Power supply/consumption
- Supply of the BMS directly on the battery pack
- Low consumption in sleep mode: < 500 μA
Mechanical format
- 66 mm x 213 mm x 22 mm
- Can be potted to be used in harsh environment.