Application of heat pump air conditioning in electric smart cars

As an efficient energy-saving device, heat pump air conditioner can both cool and heat. During the heating process, heat will flow from low-temperature objects to high-temperature objects, achieving energy-saving effects. The heat pump air conditioning system includes an electric compressor, three heat exchangers, two solenoid valves, two electronic expansion valves, and refrigerant pressure and temperature sensors. This system has been applied to BYD's latest model Dolphin, improving the efficiency of the vehicle's thermal management system.