In conventional fuel-powered vehicles, the air conditioner will not cool without starting the engine, because the air conditioning system in such vehicles relies on the engine to operate. If the car is not started, the air conditioner cannot be used. However, in electric vehicles, the air conditioner can be turned on even when the car is not started. When the car is not started, the air conditioner switch can be turned on, but the air conditioner itself does not function—only the fan operates. This is because the air conditioner requires significant power, which the car battery cannot sustain. Therefore, if the engine is not running, the air conditioner automatically enters a protection mode and does not operate. The car air conditioning system is designed to cool, heat, ventilate, and purify the air inside the vehicle. It provides a comfortable environment for passengers, reduces driver fatigue, and enhances driving safety. Different types of air conditioning systems have varying layouts. Passenger cars commonly use an integrated heating and cooling system, where components such as the evaporator, heater core, centrifugal blower, and control mechanisms are assembled together, forming the air conditioning unit. The car air conditioning controller is a control device for the car air conditioning system. It regulates the system, enabling cooling, ventilation, and defrosting functions. All equipment is securely installed, with control devices and operating mechanisms functioning smoothly and safely.
