Circuit/System Description

The hybrid/EV battery contains 3 high voltage contactors. The high voltage contactors allow the high voltage DC batteries to be connected to the vehicle or contain the high voltage DC within the hybrid/EV battery assembly. The high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor and a precharge positive high voltage contactor. The contactors close and open in a specific sequence controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies 12V to the control circuit for each high voltage contactor.