For the entire high-voltage interconnection system, in order to ensure the safety of the high-voltage system when it is powered on and off, the concept of high-voltage interlock is introduced in the connection design. A brief description is that when the connector is plugged in and turned on, the high-voltage circuit is first contacted and turned on, and then the high-voltage interlock signal circuit is turned on; when the connector is disconnected, the high-voltage interlock signal is disconnected first, and then the high-voltage circuit is disconnected. Most connector manufacturers put the high-voltage interlock design inside the connector, and some manufacturers put the high-voltage interlock outside the mating cavity through the auxiliary structure design. It is very important to ensure the stability of the high-voltage interlock circuit. If the high-voltage interlock is discontinuous, the possible impact will be very bad. For example, when the car is driving, the signal of the high-voltage interlock circuit is suddenly abnormal, causing the vehicle to suddenly lose power and not operate normally, which will cause traffic accidents.