3. BMS functions
3.1. Voltage measuring, monitoring and protection
Measuring and Monitoring:
✓ Single cell voltage, error ≤ 0.5%, resolution: 1mV
✓ Module (pack) voltage, error ≤ 0.5%, resolution: 10mV
Protection:
✓ Single cell charge over voltage protection
✓ Single cell discharge under voltage protection
✓ Module charge over voltage protection
✓ Module discharge under voltage protection
3.2. Current measuring, monitoring and protection
Measuring and Monitoring:
✓ Charge current monitoring, show as positive value, error ≤ 2% (charge @0.5C),
resolution: 10mA
✓ Discharge current monitoring, show as negative value, error ≤ 2% (discharge
@0.5C), resolution: 10mA
Protection:
✓ Charge over current protection
✓ Discharge over current protection
3.3. Temperature measuring, monitoring and protection
Measuring and Monitoring:
✓ Group of cells (≤ 4 cells) temperature, error ≤ 3°C, resolution: 1°C
✓ Battery charge temperature, error ≤ 3°C, resolution: 1°C
✓ Battery discharge temperature, error ≤ 3°C, resolution: 1°C
✓ BMS PCB temperature, error ≤ 3°C, resolution: 1°C
✓ Ambient temperature, error ≤ 3°C, resolution: 1°C
Protection:
✓ Charge over temperature protection
✓ Charge under temperature protection
✓ Discharge over temperature protection
✓ Discharge under temperature protection
3.4. SOC (State Of Charge) measuring, monitoring
Measuring and Monitoring:
✓ State Of Charge (full capacity, remaining capacity), error ≤ 5%
(charge/discharge @0.2C)
3.5. SOH (State Of Health) measuring, monitoring
Measuring and Monitoring: State Of Health, error ≤ 5%