Automotive battery management systems (BMS) monitor the vehicle’s high voltage battery by measuring and supervising the cell voltages, temperatures and currents. They monitor the battery’s state of charge (SoC) and state of health (SoH), and perform also the cell balancing.
The main functions of a Battery Management System for electric vehicles are:
- Battery monitoring by estimating the battery pack state of charge (SoC) and state of health (SoH) during charging and discharging.
- Battery optimization thanks to cell balancing, that improves the battery life and capacity, thus optimizing the driving range for hybrid (HEV), plug-in (PHEV) and full electric vehicles (BEV).
- Battery protection in order to prevent operations outside its safe operating area.
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