The invention discloses a vehicle heat pump air conditioning system and a superheat degree control method and device thereof. The stability, accuracy and rapidity of superheat degree adjustment are guaranteed. The superheat degree control method comprises the steps that when a heating mode of the vehicle heat pump air conditioning system is started, the expected opening degree of an electronic expansion valve under the current working condition is predicted through a pre-established prediction model, and the expected opening degree is set as the initial opening degree of the electronic expansion valve; and after the preset time is delayed, the opening degree of the electronic expansion valve is adjusted through a superheat degree feedforward control method and a superheat degree feedback control method at the same time, and adjustment is finished until the difference between the actual value and the expected value of the superheat degree is lower than a first preset value.

    本申请公开了一种车用热泵空调系统及其过热度控制方法和控制装置,保证了过热度调节的稳定性、准确性和快速性。该过热度控制方法包括:在车用热泵空调系统开启制热模式时,利用预先建立的预测模型预测当前工况下期望的电子膨胀阀开度,并将其设定为电子膨胀阀的初始开度;在延时预设时间后,同时利用过热度前馈控制和过热度反馈控制方法调节电子膨胀阀的开度,直至过热度的实际值与期望值之差低于第一预设值时结束调节。


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    Title :

    Automotive heat pump air conditioning system and superheat degree control method and control device thereof


    Additional title:

    一种车用热泵空调系统及其过热度控制方法和控制装置


    Contributors:
    XU XIAN (author)

    Publication date :

    2024-03-12


    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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