What is the role of automotive air conditioning relays

The function of the relay is to control the start and stop of the air conditioner. When the temperature in the car reaches the target temperature, the sensor will let the relay stop the cooling action of the air conditioner. When the temperature in the car is higher than the target temperature, the sensor will let the relay start the cooling action of the air conditioner.

The working principle of Automotive relay:
Turning on the air conditioner switch will send a signal to the air conditioner control unit and send a request signal to the engine. If conditions permit, the engine sends an allow signal to the air conditioner control unit. The air conditioner control unit controls the compressor relay to operate, and the compressor electromagnetic clutch is engaged.

Car air conditioning device (air conditioning device) is referred to as car air conditioner. It is used to adjust and control the temperature, humidity, air cleanliness and air flow in the car compartment in the best state, to provide a comfortable riding environment for the occupants, and to reduce travel fatigue; to create good working conditions for the driver, and to ensure safe driving Ventilation device that plays an important role. Generally include refrigeration devices, heating devices and ventilation devices. This combined device makes full use of the limited space inside the car, has a simple structure and is easy to operate, and is an internationally popular modern car air conditioning system.