Double-air-duct vehicle-mounted heat pump air conditioning system based on air door control and control method thereof

The invention relates to a heating ventilation air conditioner, in particular to a double-air-duct vehicle-mounted heat pump air conditioning system based on air door control and a control method of the double-air-duct vehicle-mounted heat pump air conditioning system. The technical problems that an existing vehicle-mounted heat pump air conditioner is designed in a household mode, the performance and the structure of the air conditioner are not matched with application scenes, and consequently the performance and the reliability of the air conditioner are poor are solved. The air conditioning system comprises a heat pump air conditioning module, a cold air supply duct and a hot air supply duct, wherein the cold air supply duct and the hot air supply duct are used for introducing cold air and hot air into a vehicle; the heat pump air conditioner module comprises an air door unit, a shell, a compression throttling unit, a first electromagnetic valve, an evaporator fan, a condenser fan, a condenser and an evapo