The invention provides a liquid cooling system in a battery pack and a control method thereof.The liquid cooling system comprises a reversing assembly, a liquid cooling plate, an electromagnetic valve, a battery management system, a water inlet, a water outlet and a pipeline connecting the liquid cooling plate with the water inlet and the water outlet, the liquid cooling plate forms a plurality of parallel flow channels, each parallel flow channel cools at least two battery cells, and the electromagnetic valve is arranged in the pipeline; the reversing assembly is arranged in the liquid cooling plate and corresponds to one electromagnetic valve, the reversing assembly comprises two working modes, the different working modes correspond to different cooling liquid flowing directions, and the battery management system controls the reversing assembly to switch the working modes, so that the flowing direction of the cooling liquid in the liquid cooling plate is adjusted, and the electromagnetic valves are controlled to be switched on and switched off. Therefore, the cooling liquid flow corresponding to each battery cell is adjusted. In this way, the front-back temperature difference of the series flow channels is effectively improved, and the uniformity of flow distribution of the parallel flow channels is effectively achieved.

    本申请提供一种电池包内的液冷系统及其控制方法,该液冷系统包括换向组件、液冷板、电磁阀、电池管理系统、进水口、出水口以及连接液冷板和进出水口的管道,其中,液冷板构成多个并联流道,每个并联流道冷却至少两个电芯,且对应于一个电磁阀,换向组件包括两种工作模式,不同工作模式对应不同冷却液流向,由电池管理系统控制换向组件切换工作模式,从而调整冷却液在液冷板中的流动方向,以及控制电磁阀的导通和闭合,从而调节各电芯对应的冷却液流量。如此,有效改善串联流道前后温差,以及有效实现并联流道流量分配的均匀性。


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    Title :

    Liquid cooling system in battery pack and control method thereof


    Additional title:

    一种电池包内的液冷系统及其控制方法


    Contributors:
    CAO ZIHAI (author) / ZENG YONG (author) / WANG QINGQUAN (author) / DENG SHANQING (author) / LYU SHAOYIN (author)

    Publication date :

    2023-09-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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