Therefore, this requires the high-voltage management system to monitor the current of the power battery in real time. When an abnormal current is detected, the high-voltage management system will cut off all high-voltage circuits in time and issue an audible and visual alarm to remind drivers and other vehicles.
Detection and Troubleshooting of Contact State of High Voltage Contactor
In order to realize the control function of pure electric vehicles and the self-cutting protection function of the high-voltage circuit, the high-voltage contactor that is controllable and has the function of self-protection and cutting off the high-voltage circuit must be configured in the high-voltage system of the electric vehicle. According to the requirements of vehicle design, any electric vehicle will be equipped with a high-voltage contactor in the power main circuit. If the contact of the high-voltage contactor fails to close or disconnect, there is no corresponding correct way to deal with it, which may cause abnormal The car cannot be started normally or cannot be started due to the control.