The invention provides a battery heat dissipation system and an electric vehicle. The battery heat dissipation system comprises a battery assembly, a box body and a heat dissipation assembly, the box body is provided with an inner cavity, and the battery assembly is arranged in the inner cavity; the heat dissipation assembly comprises a first heat dissipation assembly and a second heat dissipation assembly; the first heat dissipation assembly comprises a first air inlet pipe, the first end of the first air inlet pipe is connected with the outside atmosphere, and the second end of the first air inlet pipe is connected with the inner cavity; the second heat dissipation assembly comprises an expansion cavity, a piston assembly and a second air inlet pipe, the expansion cavity and the second air inlet pipe are both arranged on the box body, the cavity wall and the inner cavity of the expansion cavity have heat conduction, and the piston assembly is in sliding fit with the expansion cavity; and the second air inlet pipe is used for introducing a refrigeration airflow, the piston assembly is provided with a through hole, and the piston assembly is used for moving when a gas in the expansion cavity is heated and expanded so as to drive the through hole to communicate with the second air inlet pipe, and the refrigeration airflow is conveyed into the inner cavity from the second air inlet pipe. The battery heat dissipation system provided by the invention has a relatively good heat dissipation effect.

    本申请提供一种电池散热系统及电动汽车。本申请提供的电池散热系统包括电池组件、箱体和散热组件,箱体具有内腔,电池组件设置在内腔内;散热组件包括第一散热组件和第二散热组件;第一散热组件包括第一进气管,第一进气管的第一端与外界大气连通,第一进气管的第二端与内腔连通;第二散热组件包括膨胀腔、活塞组件和第二进气管,膨胀腔和第二进气管均设置在箱体上,且膨胀腔的腔壁和内腔具有热传导,活塞组件与膨胀腔滑动配合;第二进气管用于通入制冷气流,活塞组件具有导通孔,活塞组件用于在膨胀腔内的气体受热膨胀移动,以带动导通孔与第二进气管连通,并将制冷气流从第二进气管输送至内腔内。本申请的电池散热系统具有较好的散热效果。


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    Title :

    Battery heat dissipation system and electric vehicle


    Additional title:

    电池散热系统及电动汽车


    Contributors:
    HOU LEI (author) / ZHENG YULONG (author) / LI DONGNING (author) / GAO TAO (author)

    Publication date :

    2021-06-29


    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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