Composite Separator, Electrochemical Apparatus, and Terminal Device

    公开(公告)号:US20250132461A1

    公开(公告)日:2025-04-24

    申请号:US18832353

    申请日:2022-12-20

    Abstract: A composite separator includes a base separator and a film covering a surface of the base separator, where the film is a porous film. The film includes a first material region, a second material region, and a third material region, and the second material region and the third material region are respectively disposed on two sides of the first material region, and both are connected to the first material region. A material of the first material region includes a polymer. Both a material of the second material region and a material of the third material region include inorganic particles, where a mass percentage of the inorganic particles in the second material region is 90% or more, and/or a mass percentage of the inorganic particles in the third material region is 90% or more.

    BATTERY PACKAGING FILM, METHOD FOR PREPARING BATTERY PACKAGING FILM, AND ELECTRONIC DEVICE

    公开(公告)号:US20240063478A1

    公开(公告)日:2024-02-22

    申请号:US18252713

    申请日:2021-11-09

    Inventor: Zhixian Li Fan Xu

    CPC classification number: H01M50/128 H01M10/0525

    Abstract: A battery packaging film includes a metal layer, a first bonding enhancement layer, a first bonding layer, a second bonding layer, a first protective layer, and a second protective layer. The first bonding enhancement layer is located on a first surface of the metal layer. The first bonding layer is located on a surface of the first bonding enhancement layer away from the metal layer. Because the first bonding enhancement layer is added to an upper surface of the metal layer, roughness of the upper surface of the metal layer is increased to enhance strength of bonding between the first protective layer and the metal layer and minimize occurrence of unintended separation of the first protective layer from the metal layer, thereby enhancing safety of the battery packaging.

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