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    Battery cell and lithium ion battery
    1.
    发明授权
    Battery cell and lithium ion battery 有权

    公开(公告)号：US12046718B2

    公开(公告)日：2024-07-23

    申请号：US17065089

    申请日：2020-10-07

    Applicant: Ningde Amperex Technology Limited

    Inventor： Qiao Zeng ,  Jing Jiang ,  KeFei Wang

    IPC: H01M10/0585 ,  H01M10/0525 ,  H01M10/0587

    CPC classification number: H01M10/0585 ,  H01M10/0525 ,  H01M10/0587

    Abstract: A battery cell, including a first electrode plate, a second electrode plate, a separator, and a first electrode tab. The separator is disposed between the first electrode plate and the second electrode plate. The first electrode plate, the second electrode plate, and the separator are wound along a length direction of the first electrode plate. The first electrode tab is located at an end in a width direction of the first electrode plate. In the length direction of the first electrode plate, the first electrode plate includes a first edge, and a first notch is disposed at the first edge.

    Electrode assembly
    2.
    发明授权
    Electrode assembly 有权

    公开(公告)号：US11646473B2

    公开(公告)日：2023-05-09

    申请号：US16825949

    申请日：2020-03-20

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Jing Jiang

    IPC: H01M50/531 ,  H01M50/46 ,  H01M50/543 ,  H01M50/586

    CPC classification number: H01M50/531 ,  H01M50/46 ,  H01M50/543 ,  H01M50/586 ,  H01M2200/00

    Abstract: The present disclosure provides an electrode assembly including a first electrode sheet, the first electrode sheet includes a first current collector and a first tab. The first tab extends from a surface of the first electrode sheet and electrically connected with the first current collector, a plurality of tabs are provided and the number of the first tabs is q. The plurality of first tabs include a first breakable tab, the first breakable tab includes a breakable part and a first insulating layer, the first insulating layer wraps the breakable part, the breakable part includes a first segment and a second segment, the first segment is connected with the second segment, and an included angle between the first segment and the second segment is less than 90°. The number of first breakable tabs is p, and p/q≤1/2.

    Wound electrode assembly with empty foil segment
    3.
    发明授权
    Wound electrode assembly with empty foil segment 有权

    公开(公告)号：US11329309B2

    公开(公告)日：2022-05-10

    申请号：US17013702

    申请日：2020-09-07

    Applicant: Ningde Amperex Technology Limited

    Inventor： Jing Jiang ,  Liangzhen Xiao

    IPC: H01M10/04 ,  H01M10/0587

    Abstract: A wound electrode assembly, including a first electrode plate including a first current collector and a second electrode plate including a second current collector, wherein the second electrode plate includes a second empty foil segment, the second empty foil segment surrounds the first electrode plate, the second empty foil segment is configured as a tail segment of the second electrode plate, in the second empty foil segment, a surface of the second current collector opposite to the first electrode plate is coated with active substance, a surface of the second current collector away from the first electrode plate is coated with the active substance. The wound electrode assembly to effectively avoids lithium dendrite while improving the utilization of the battery material and the energy density of the battery, thereby improving the safety performance of the battery.

    Wound electrode assembly with empty foil segments
    6.
    发明授权
    Wound electrode assembly with empty foil segments 有权

    公开(公告)号：US11158879B2

    公开(公告)日：2021-10-26

    申请号：US16432902

    申请日：2019-06-05

    Applicant: Ningde Amperex Technology Limited

    Inventor： Jing Jiang ,  Liangzhen Xiao

    IPC: H01M10/04 ,  H01M10/0587

    Abstract: The present application provides a wound electrode assembly, comprising a first and second electrode plates having a first and second current collectors respectively, the first electrode plate has an empty foil segment having an area where the first electrode plate is bent for the first time, and the second electrode plate has a second head segment; the second current collector in the second head segment is coated with active substance on both sides, and projections of a starting end and an ending end of the empty foil segment in a thickness direction fall on the second head segment. The purpose of the present application is to provide a wound electrode assembly to effectively avoid lithium dendrite while improving the utilization of the battery material and the energy density of the battery, thereby improving the safety performance of the battery.

    Battery
    7.
    发明授权
    Battery 有权

    公开(公告)号：US10658644B2

    公开(公告)日：2020-05-19

    申请号：US16133953

    申请日：2018-09-18

    Applicant: Ningde Amperex Technology Limited

    Inventor： Hongzhan Yang ,  Jing Jiang ,  Qiao Zeng ,  Kefei Wang

    IPC: H01M2/18 ,  H01M10/04 ,  H01M2/02 ,  H01M2/20 ,  B31D1/02

    Abstract: Embodiments of the present application disclose a battery to reduce the volume of the battery, improve the energy density of the battery, and further improve the bottom molding effect of the battery, as well as the safety performance and service life of the battery. The battery comprises an electrode assembly and a package film for packaging the electrode assembly, the package film including a folding portion, the folding portion including a first segment attached to the end face of the electrode assembly and a second segment connected to the first segment. The first segment is arranged between the second segment and the electrode assembly, and the second segment includes a multilayer package films.

    ELECTRODE ASSEMBLY AND SECONDARY BATTERY
    8.
    发明申请
    ELECTRODE ASSEMBLY AND SECONDARY BATTERY 审中-公开

    公开(公告)号：US20190165339A1

    公开(公告)日：2019-05-30

    申请号：US16175883

    申请日：2018-10-31

    Applicant: Ningde Amperex Technology Limited

    Inventor： Jing Jiang ,  Kefei Wang

    IPC: H01M2/02 ,  H01M2/32 ,  H01M2/10 ,  H01M4/62 ,  H01M4/13

    Abstract: The present application relates to an electrode assembly and a secondary battery. The electrode assembly includes a cell and a protective layer. The cell includes a cell body and an electrode tab protruding from a top surface of the cell body. In a length direction of the cell, at least one end of the protective layer extends beyond the height at which the anode electrode in the cell body protrudes at the end, and the extended dimension is no more than 3 mm. As such, the burr of the anode electrode of the cell body is wrapped by the protective layer, which alleviates the phenomenon that the burr on the anode electrode pierces the package bag and chemically reacts with the aluminum layer of the package bag, thereby reducing the risk of leakage of the package bag.

    Battery including current collector tail structure
    9.
    发明授权
    Battery including current collector tail structure 有权

    公开(公告)号：US12176546B2

    公开(公告)日：2024-12-24

    申请号：US18132778

    申请日：2023-04-10

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Jing Jiang

    IPC: H01M4/78 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/40 ,  H01M50/46 ,  H01M50/531 ,  H01M50/595 ,  H01M50/586

    Abstract: A cell includes a first current collector and a second current collector. A tail end of the first current collector exceeds a tail end of the second current collector by at least half a circle in a winding direction. The tail end of the first current collector does not include an active material and is bonded on an outer peripheral surface of an outermost circle of the first current collector by a first adhesive, the first adhesive is a double-sided tape or a hot melt adhesive. The cell is bonded with another double-sided tape or another hot melt adhesive on a side opposite from the tail end of the first current collector.

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