NEGATIVE ELECTRODE SHEET, PREPARATION METHOD THEREFOR, AND RELATED DEVICE

    公开(公告)号:EP4425618A1

    公开(公告)日:2024-09-04

    申请号:EP23802479.8

    申请日:2023-03-10

    IPC分类号: H01M4/74

    摘要: Some embodiments of this application disclose a negative electrode plate, and a method for preparing same, and related devices. The negative electrode plate includes a current collector. The current collector is made of a foamed metal material. The current collector includes a first region, a second region, and a third region arranged sequentially along a first direction. An interior of the first region is provided with a negative active material. The second region is filled with an insulation material. The third region is provided with no negative active material. The technical solution hereof ensures that no metal particles are deposited in a tab region in a battery that uses foamed metal as a negative electrode, thereby avoiding a short circuit of a battery cell caused by dendrites arising from surplus metal particles deposited in the tab region, and in turn, enhancing safety performance of the battery. In addition, the tab region can maintain metal properties to facilitate welding and maintain a high flow capacity.

    NEGATIVE ELECTRODE PLATE FOR LEAD STORAGE BATTERY AND LEAD STORAGE BATTERY

    公开(公告)号:EP4016671A1

    公开(公告)日:2022-06-22

    申请号:EP20869799.5

    申请日:2020-09-24

    摘要: A negative electrode plate for a lead-acid battery, including a negative electrode current collector and a negative electrode material, where the negative electrode current collector includes: a frame rib part with an ear; and a grid part that is continuous with the frame rib part, the grid part has a plurality of quadrangular grids, the quadrangular grid has a pair of first vertexes with a diagonal line in a first direction from the frame rib part toward the grid part, and a pair of second vertexes with a diagonal line in a second direction intersecting the first direction, the angle θ made by two sides that form the second vertex is 55° or more and 100° or less, and the negative electrode material contains an organic condensate.