The principle of electric vehicle high voltage interlock A to understand to look at

1, the principle of electric vehicle high voltage interlock is leakage protector and high voltage interlock, is to check the electrical connection integrity (continuity) of all the sub-circuits connected to the high-voltage bus on the electric vehicle by using a low-voltage signal, including the entire battery system, wires, connectors, DCDCs, motor controllers, high-voltage boxes and protection covers, and other system circuits.

2. When the high-voltage circuit connection of the whole power system is disconnected or the integrity is damaged, it is necessary to start safety measures, such as alarming or disconnecting the high-voltage circuit. As the electric vehicle power system is composed of multiple subsystems, which are connected to each other by high-voltage connectors, and the operating environment is very harsh, with most of the working conditions under vibration and shock conditions, the high-voltage interlock design is the key to ensure the safety of personnel and the safe operation of vehicle equipment.