The embodiment of the invention discloses a heat pump air conditioner heating method, a heat pump air conditioner and an electric vehicle. The heat pump air conditioner heating method comprises the steps that the condensation temperature is determined based on the environment temperature and the environment humidity; the low-pressure temperature and the high-pressure temperature of a refrigerant of the air conditioner are obtained; based on the environment temperature, the low-pressure temperature and the condensation temperature, the running state of an outdoor heat exchanger of the air conditioner is determined, and the running state comprises a critical freezing state and a non-freezing state; if the outdoor heat exchanger operates in the critical freezing state, the rotating speed of acompressor of the air conditioner is reduced so as to control the outdoor heat exchanger to operate in the non-freezing state; PI adjustment is conducted on the compressor so that heating can be conducted only through the compressor; or PI adjustment is carried out on the operation power of the PTC heater of the air conditioner, and auxiliary heating is carried out through the PTC heater. Therefore, according to the method, the outdoor heat exchanger of the air conditioner can be prevented from being frozen, and the problem that energy consumption is increased due to repeated deicing operation is fundamentally solved.

    本发明实施例公开了一种热泵空调制热方法、热泵空调及电动车辆。该热泵空调制热方法包括:基于环境温度和环境湿度确定凝露温度;获取空调的制冷剂的低压温度和高压温度;基于环境温度、低压温度和凝露温度,确定空调的室外换热器的运行状态,其中,运行状态包括临界结冰状态和非结冰状态;若室外换热器运行于临界结冰状态,则降低空调的压缩机转速,以控制室外换热器运行于非结冰状态;对压缩机进行PI调节,以仅通过压缩机进行制热;或者,对空调的PTC加热器的运行功率进行PI调节,以通过PTC加热器辅助制热。可见,本实施例可避免空调的室外换热器出现结冰现象,根本上解决了因为反复除冰操作而导致的能耗增加问题。


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    Title :

    Heat pump air conditioner heating method, heat pump air conditioner and electric vehicle


    Additional title:

    热泵空调制热方法、热泵空调及电动车辆


    Contributors:
    ZHUANG LINGHUA (author) / HUA YIFEI (author)

    Publication date :

    2021-03-02


    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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