Abstract: An electric vehicle cooling system includes a vehicle control unit (VCU), a coolant pump controller, a motor controller, a motor, a vehicle charger, an electronic coolant pump, and a cooling plate. The electronic coolant pump, the vehicle charger, the motor controller, the motor, and the cooling plate are connected in sequence to form a closed coolant loop for a coolant. Either the VCU or the coolant pump controller of the electronic coolant pump can control the electronic coolant pump to switch between an idle mode and a normal mode according to a coolant temperature detected from the closed coolant loop. Under the normal mode, the VCU controls the electronic coolant pump to have an ideal pumping speed according to the coolant temperature detected from the closed coolant loop and a rotational speed of the motor, ensuring good cooling efficiency.

Abstract: An electric vehicle cooling system includes a vehicle control unit (VCU), a coolant pump controller, a motor controller, a motor, a vehicle charger, an electronic coolant pump, and a cooling plate. The electronic coolant pump, the vehicle charger, the motor controller, the motor, and the cooling plate are connected in sequence to form a closed coolant loop for a coolant. Either the VCU or the coolant pump controller of the electronic coolant pump can control the electronic coolant pump to switch between an idle mode and a normal mode according to a coolant temperature detected from the closed coolant loop. Under the normal mode, the VCU controls the electronic coolant pump to have an ideal pumping speed according to the coolant temperature detected from the closed coolant loop and a rotational speed of the motor, ensuring good cooling efficiency.