The invention discloses a vehicle power assembly cooling system, a vehicle and a control method. The vehicle power assembly cooling system comprises a motor cooling loop, an engine cooling loop and a heat exchanger. The engine cooling loop comprises a large cooling loop and a small cooling loop, the large cooling loop and the small cooling loop are partially overlapped, an engine flows through the small cooling loop, the amount of cooling liquid in the small cooling loop is far smaller than that in the large cooling loop, and an electronic thermostat is arranged between the large cooling loop and the small cooling loop. The engine cooling loop can be switched between the large cooling loop and the small cooling loop; at least one part of the pipeline of the motor cooling loop and at least one part of the pipeline of the small cooling loop exchange heat through the heat exchanger. According to the vehicle power assembly cooling system, heat in the motor cooling loop can be used for preheating the engine, so that friction loss and torque fluctuation caused by too low water temperature and oil temperature of the engine when the engine is started can be avoided.

    本发明公开了一种车辆动力总成冷却系统、车辆和控制方法,其中车辆动力总成冷却系统包括:电动机冷却回路、发动机冷却回路和换热器。发动机冷却回路包括:大冷却回路和小冷却回路,大冷却回路与小冷却回路部分重叠,小冷却回路流过发动机,小冷却回路内的冷却液量远小于大冷却回路内的冷却液量,大冷却回路与小冷却回路之间设置有电子节温器,发动机冷却回路能够在大冷却回路和小冷却回路之间切换;电动机冷却回路的至少一部分管路以及小冷却回路的至少一部分管路通过换热器进行换热。该车辆动力总成冷却系统能够利用电动机冷却回路中的热量对发动机进行预热,从而能够避免在启动发动机时,发动机水温与油温过低导致的摩擦损失以及扭矩波动。


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    Title :

    Vehicle power assembly cooling system, vehicle and control method


    Additional title:

    车辆动力总成冷却系统、车辆和控制方法


    Contributors:
    LIU DE'EN (author) / JIN QIQIAN (author)

    Publication date :

    2022-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02N STARTING OF COMBUSTION ENGINES , Anlassen von Brennkraftmaschinen



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