Heat pump air conditioning system and control method thereof and automobile

Abstract

The invention provides a heat pump air conditioning system and a control method thereof and an automobile. The heat pump air conditioning system comprises a compressor, an automobile exterior heat exchanger, a first automobile interior heat exchanger and a second automobile interior heat exchanger; the first automobile interior heat exchanger can absorb heat and refrigerate the interior of the automobile; the second automobile interior heat exchanger can release heat from the interior of the automobile and can heat the interior of the automobile; the heat pump air conditioning system further comprises a cooling loop; a battery pack and intermediate heat exchanger are arranged on the cooling loop; the intermediate heat exchanger can be arranged at the two ends of the first automobile interior heat exchanger in parallel; and the intermediate heat exchanger can also be arranged on a pipeline of the second automobile interior heat exchanger in series. Compared with a mode of using PTC electric heating to heat the battery pack, the heat pump air conditioning system has the advantages that the integrated energy efficiency ratio is higher; the heat pump air conditioning system and a cooling liquid circulation system in a heat management system can realize a function of cooling the battery pack while heating a passenger compartment by controlling a solenoid valve; and the heat pump airconditioning system in the heat management system can realize a passenger compartment multi-temperature zone independent temperature control function by controlling the solenoid valve.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a heat pump air conditioning system, a control method thereof, and an automobile. Background technique [0002] At present, electric vehicles need more space and components for thermal management. The interior space of the compartment needs to be refrigerated or heated according to the needs of users. The drive motor and control module need to be dissipated to prevent damage from high temperature operation. The battery pack needs to be maintained at an optimal temperature. Operating temperature to ensure its working efficiency and life. At present, an electric-driven air conditioner is generally used to regulate the temperature of the interior space of the car, and the drive motor, battery pack, and control module are used to dissipate heat through coolant or air cooling. As pure electric vehicles have higher and higher requirements for cruising range, the e...

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Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the thermal management system of electric vehicles in the prior art usually adopts the mode of single-cooling air-conditioning refrigeration + PTC heating, which has low heating energy efficiency and affects the battery life of electric vehicles, thereby providing a A kind of heat pump air-conditioning system and its control method and automobile

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