New energy vehicle relay is a controlled switching device on the high voltage circuit, and also plays the role of active protection device in the system. It is used in various switching points of high voltage circuits, such as the main circuit of power battery, fast charging circuit, high voltage power supply lines of electrical appliances, such as motors, DCDCs, air conditioning compressors, heaters and so on.

Like the function of general relays, relays in the electrical automation industry play the role of ‘switching’, that is, by controlling a circuit on and off to control the next circuit on and off the intermediate link. Therefore, the role of automotive relays is to control the size of the current and on and off.

The role of the relay is to use the switch to control the relay coil, and then the relay contact closure or disconnection, contact one end and the main line current is connected to the other end and to control the electrical appliances connected to achieve a small current to control the high current, to prevent the switch switch is a large current through the switch burned out, the line and the switch to play a role in the protection of the switch.

As long as the engine compartment cover is lifted to find the relay mounting box, you can look for the relay. Relays are used for car lights, wipers, starters, air conditioning, power seats, power windows and doors, anti-lock devices, suspension controls, stereos and more. There are two main parts to a control relay, one is the control system and the other is the system being controlled. Controlling a large current with a small current is the characteristic of a control relay.