OPERATING METHOD FOR AIR CONDITIONING SYSTEM FOR VEHICLE, AND AIR-INTAKE SYSTEM THEREOF, AND VEHICLE

The present application discloses an air conditioning system for a vehicle and an operating method therefor, which relates to the technical field of vehicle air conditioners. The system includes a motor (), an operating dial () and internal and external-circulation ventilation doors (), and the motor () drives the operating dial () to drive the internal and external-circulation ventilation doors () to rotate to achieve the purpose of different internal and external air-intake ratios. The operating method includes: receiving a pulse signal, wherein the pulse signal comprises a preset direction of rotation and a preset step count of rotation of the motor (); and driving the motor () to rotate in the preset direction by the preset step count, to drive the operating dial () to rotate, to cause the internal-circulation ventilation door () to rotate to a first preset angle, and cause the external-circulation ventilation door () to rotate to a second preset angle, so that an air-intake ratio of an internal air-intake volume and an external air-intake volume of the air conditioning system is a preset first ratio. The system and the method can control the ratio of the mixing of the internal air and the external air, to satisfy different usage conditions, to achieve the purpose of improving the fuel-oil economic efficiency of the entire vehicle, the endurance mileage of new-energy vehicles and the comfort of the air-conditioner blown air.