The core functions of power battery BMS include the following:
- Battery Data Acquisition: The power battery BMS acquires data such as voltage, temperature, current, insulation resistance, and high-voltage interlock status of the battery system in order to provide real-time battery status information.
- Battery status analysis: The power BMS examines data to calculate the battery’s SOC and SOH, crucial factors for assessing battery performance and range.
- Battery safety protection: The BMS monitors the battery system and takes protective measures, such as power limitation or disconnection, in case of faults such as over-voltage, under-voltage, high-temperature, low-temperature, over-current, etc. in order to ensure the safe operation of the battery.
- Battery system energy management: The BMS manages the charging and discharging process of the battery, including controlling the charging current, charging cut-off voltage, discharging power, etc., to optimize the performance and life of the battery.
- Data communication and storage: The BMS transmits battery data to the vehicle system via CAN communication and stores historical data for subsequent analysis and fault diagnosis.
- Fault diagnosis and management: The BMS performs fault diagnosis according to the preset fault thresholds, and when a fault is detected, it takes appropriate protective measures and provides fault information to the vehicle system.
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