DTC P0A1F Battery Energy Control Module: Description

For the purpose of calculating the SOC (state of charge) of the HV battery and ensuring safety in the event of a malfunction in the HV battery assembly, the battery ECU provides the following control functions:

• SOC calculation

  The battery ECU calculates the SOC by estimating the charging and discharging amperage and monitoring other values.

• Cooling fan control

  The battery ECU controls the battery blower in order to protect the HV battery assembly from heat that is generated during charging and discharging. By maintaining a stable temperature, it promotes the effective operation of the HV battery assembly.

• HV battery assembly malfunction monitoring

  If the battery ECU detects a malfunction, it protects the HV battery assembly by limiting or stopping the charging or discharging of the HV battery in accordance with the temperature or voltage of the HV battery assembly.