Hybrid Electric Vehicle Training Educator

Blower Motor Battery Cooling

  • information
  • technical details

The battery blower motor and the heating ventilation air conditioning (HVAC) system cool the high-voltage battery. Air from the passenger compartment is pulled into the high-voltage battery. For example, on warm days when ambient temperature is extremely high, air conditioning cools the passenger compartment. The blower motor pulls in cool air where it enters the high-voltage battery pack. The opposite is true on a cold day, with the blower motor and HVAC system producing warm air that enters the blower motor to warm the high-voltage battery.

In order to maintain the high-voltage battery temperature at the optimum level, the hybrid vehicle electronic control unit (HV ECU) regulates the high-voltage battery blower motor according to the signal from the high-voltage battery temperature sensor. Battery temperature sensors report battery temperature to the Battery Smart Unit (BSU). The information is relayed via the controller area network (CAN) bus to the HV ECU.

© 2012 National Alternative Fuels Training Consortium.

Blower Motor Battery Cooling

Blower Motor Battery Cooling