Power battery system control device of pure electric light truck

A power battery system control device of a pure electric light truck comprises a box body and a battery management system main board installed in the box body, and a battery positive electrode input port is connected with a discharging positive electrode output port after passing through a manual maintenance switch. A battery positive electrode input port is connected with a charging positive electrode input port after sequentially passing through a manual maintenance switch, a first fuse and a K1 charging contactor, and is connected with a battery heating interface after sequentially passingthrough a manual maintenance switch, a second fuse and a K2 heating contactor. The battery cathode input port is connected with the discharging cathode output port, the charging cathode input port andthe battery heating interface after sequentially passing through the current sensor and the K3 main cathode contactor, and the battery management system main board is connected with the whole vehiclecommunication interface an