The invention discloses an electric automobile heat pump air conditioner defrosting control system and a method, and the method comprises the steps: firstly judging whether defrosting is needed or notin an air conditioning system state, judging the temperature of a water inlet of a motor if defrosting is needed, and carrying out the defrosting through waste heat recovery if the temperature of thewater inlet of the motor is greater than T2 DEG C; and if the temperature of the water inlet of the motor is lower than T2 DEG C, switching to a reverse circulation defrosting stage, and entering a heating mode until the defrosting stage is finished. According to the invention, the problems that the COP of the air conditioning system is reduced and the heating capacity is attenuated due to frosting of the external heat exchanger of the electric automobile are solved, and the energy consumption of the battery is reduced by defrosting by utilizing motor waste heat.

    本发明公开了一种电动汽车热泵空调除霜控制系统及方法,首先判定在空调系统状态下是否需要除霜,如果需要除霜,对电机入水口温度进行判断,如果电机入水口温度大于T2摄氏度,则使用余热回收除霜;如果电机入水口温度小于T2摄氏度,则切换为逆循环除霜阶段,直到除霜阶段结束后,进入制热模式。本发明解决了电动汽车由于外部换热器结霜导致空调系统COP下降,制热能力衰减,并且利用电机余热进行除霜,降低了电池能量消耗。


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    Title :

    Electric automobile heat pump air conditioner defrosting control system and method


    Additional title:

    一种电动汽车热泵空调除霜控制系统及方法


    Contributors:
    PIAO CHANGHAO (author) / WANG WEIWEI (author) / WANG XIAOBO (author) / YUAN RONGDI (author) / LIU ZIYANG (author) / SANG ZIHANG (author) / ZHOU ANJIAN (author) / ZHENG DENGYU (author)

    Publication date :

    2021-01-05


    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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