The embodiment of the invention provides an air conditioning system oil return control method, an automobile heat pump air conditioning system and an electric automobile. The air conditioning system comprises an electric compressor, a gas-liquid separator, an evaporator and a condenser which are connected through pipelines, and a battery cooler connected with the evaporator in parallel. The control method comprises the steps that the rotating speed of the electric compressor is monitored; monitoring the on-off state of the battery cooler; the current operation condition of the electric compressor is determined based on the rotating speed of the electric compressor and the opening and closing state of the battery cooler; judging whether the current operation working condition of the electric compressor enters a preset working condition or not; and when the electric compressor enters the preset working condition, an emergency oil return strategy of the electric compressor is started. According to the embodiment of the invention, the electric compressor body can be prevented from being damaged when the electric compressor works under severe working conditions for a long time.

    本申请实施例提供一种空调系统回油的控制方法、汽车热泵空调系统及电动汽车。该空调系统包括通过管路连接的电动压缩机、气液分离器、蒸发器和冷凝器、以及与蒸发器并联连接的电池冷却器。该控制方法包括:监测电动压缩机的转速;监测电池冷却器的开闭状态;基于电动压缩机的转速和电池冷却器的开闭状态来确定电动压缩机当前所处的运行工况;判断电动压缩机当前所处的运行工况是否进入到预定工况;以及在电动压缩机进入到预定工况时,则启动电动压缩机的应急回油策略。本申请实施例能够避免电动压缩机长期在恶劣工况下工作而导致损坏电动压缩机本体。


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    Title :

    Control method for oil return of air conditioning system, automobile heat pump air conditioning system and electric automobile


    Additional title:

    空调系统回油的控制方法、汽车热泵空调系统及电动汽车


    Contributors:

    Publication date :

    2023-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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