The invention relates to the technical field of battery packs of electric vehicles, in particular to a battery pack circuit breaking device which comprises a shell and a wire, a first shearing block and a second shearing block are arranged in the shell, the first shearing block is provided with a first shearing face, the second shearing block is provided with a second shearing face, and the first shearing face is in sliding connection with the second shearing face. A first pole and a second pole are arranged on the shell, the first pole is electrically connected with one end of the wire, and the second pole is electrically connected with the other end of the wire; the wire is provided with a shearing section, and the shearing section stretches across the joint of the first shearing surface and the second shearing surface; and the shell extrudes the first shearing block or/and the second shearing block to enable the first shearing surface to slide relative to the second shearing surface in a staggered manner and shear the shearing section. When a vehicle collides, the shell deforms to push the first shearing surface and the second shearing surface to slide in a staggered manner and shear the shearing section, so that the wire is disconnected, the two serially connected battery cells are disconnected, and the problems of thermal runaway and thermal diffusion caused by extrusion deformation of the battery cells in the battery pack are solved.

    本发明涉及电动车的电池包技术领域,涉及一种电池包断路装置,包括壳体及导线,壳体中设有第一剪切块与第二剪切块,第一剪切块具有第一剪切面,第二剪切块具有第二剪切面,第一剪切面与第二剪切面滑动连接,壳体上设有第一极柱与第二极柱,第一极柱与导线的一端电连接,第二极柱与导线的另一端电连接;导线具有剪切段,剪切段横跨第一剪切面与第二剪切面的连接处;壳体挤压第一剪切块或/和第二剪切块使第一剪切面相对第二剪切面错位滑动并剪断剪切段。当车辆发生碰撞时,壳体产生变形推动第一剪切面与第二剪切面错位滑动并剪断剪切段,从而将导线断开,进而将两串联的电芯断开,从而解决了电池包内部电芯受到挤压变形引起热失控、热扩散的问题。


    Access

    Download


    Export, share and cite



    Title :

    Battery pack circuit breaking device


    Additional title:

    一种电池包断路装置


    Contributors:
    SHI FANGYUAN (author) / JIANG YAZHOU (author) / ZHANG BIN (author)

    Publication date :

    2024-05-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Battery pack circuit breaking unit and electric automobile thereof

    HONG DAN / TANG ZHI / LEI JINGJING et al. | European Patent Office | 2021

    Free access

    Battery pack circuit breaking unit with horizontally mounted relay

    WANG LEI / SHAO ZHEWEI / ZHOU JIZI | European Patent Office | 2024

    Free access

    New energy vehicle battery pack intelligent circuit breaking unit control circuit

    YAN YOULIN / TANG XINYING / ZHANG JIAQI | European Patent Office | 2022

    Free access

    Saw-off type battery pack breaking device

    CHEN BIN / ZHAO YONGGANG / MA SHIPENG et al. | European Patent Office | 2024

    Free access

    Integrated thermal management device of battery pack breaking unit

    GU LEILEI / WANG YING / WANG XINRUI | European Patent Office | 2022

    Free access