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    Cathode, electrochemical device and electronic device comprising same
    1.
    发明授权
    Cathode, electrochemical device and electronic device comprising same 有权

    公开(公告)号：US10916769B2

    公开(公告)日：2021-02-09

    申请号：US16298738

    申请日：2019-03-11

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Xinru Su ,  Baozhang Li ,  Yisong Su ,  Zhiwen Xiao

    IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

    Abstract: The present application relates to a cathode, an electrochemical device and an electronic device including the same. The cathode includes: a cathode current collector, a first cathode active material layer, a second cathode active material layer and an insulating layer; where the first cathode active material layer covers a first portion of a first surface of the cathode current collector, and the insulating layer covers a second portion of the first surface of the cathode current collector that is different from the first portion, where a first distance exists between the insulating layer and the first cathode active material layer in a longitudinal direction of the cathode current collector. By providing a gap between the active material layer in a two-layer structure and the insulating layer in the cathode, the potential problem of the overlapping of the active material layer in a two-layer structure and the insulating layer on the cathode is alleviated, thereby ensuring that the electrochemical device cannot catch fire and lead to failure in the event of being punctured, and further ensuring the mechanical safety performance of the electrochemical device.

    ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE
    2.
    发明申请
    ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20220223876A1

    公开(公告)日：2022-07-14

    申请号：US17709984

    申请日：2022-03-31

    Applicant: Ningde Amperex Technology Limited ,  Dongguan Amperex Technology Limited

    Inventor： Baozhang Li

    IPC: H01M4/62 ,  H01M10/0525

    Abstract: An electrode plate includes a current collector and an active material layer located on the current collector. The active material layer includes particle groups. A particle group includes active material particles and a first binder particle. The first binder particle bonds at least three active material particles. A single particle group includes a first binder particle and at least three active material particles bonded by the first binder particle. A particle diameter of the first binder particles in the plurality of particle groups is 0.1 μm to 3.5 μm.

    WOUND CELL AND BATTERY USING THE SAME
    3.
    发明申请
    WOUND CELL AND BATTERY USING THE SAME 有权

    公开(公告)号：US20210202977A1

    公开(公告)日：2021-07-01

    申请号：US16906437

    申请日：2020-06-19

    Applicant: Ningde Amperex Technology Limited

    Inventor： Xinru Su ,  Baozhang Li ,  Xiao Chen ,  Chang Chuan Shi

    IPC: H01M10/04

    Abstract: An impact resistant wound cell comprises a first electrode plate with a first surface and a second surface. The first surface comprises a first active material area and a first current collector area, the second surface comprises a second active material area and a second current collector area. The first current collector area is located on an inner side of an outermost circle of the wound cell. In the first electrode plate, the second current collector area and the first current collector area are adjacent to and opposite to each other, the first current collector area and the second current collector area are bonded together by a first bonding member. The present disclosure further provides a battery using the wound cell.

    CATHODE, ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME
    4.
    发明申请
    CATHODE, ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME 有权

    公开(公告)号：US20210135206A1

    公开(公告)日：2021-05-06

    申请号：US17142963

    申请日：2021-01-06

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Xinru Su ,  Baozhang Li ,  Yisong Su ,  Zhiwen Xiao

    IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

    Abstract: An electrochemical device includes a cathode current collector, a first cathode active material layer, a second cathode active material layer and an insulating layer. The first cathode active material layer covers a first portion of a first surface of the cathode current collector, and the insulating layer covers a second portion of the first surface of the cathode current collector that is different from the first portion. A first distance exists between the insulating layer and the first cathode active material layer in a longitudinal direction of the cathode current collector. By providing a gap between the active material layer in a two-layer structure and the insulating layer in the cathode, thereby ensuring the mechanical safety performance of the electrochemical device.

    ELECTRODE ASSEMBLY AND BATTERY
    5.
    发明申请
    ELECTRODE ASSEMBLY AND BATTERY 审中-公开

    公开(公告)号：US20200036051A1

    公开(公告)日：2020-01-30

    申请号：US16158485

    申请日：2018-10-12

    Applicant: Ningde Amperex Technology Limited

    Inventor： Baozhang Li ,  Weimin Jiao ,  Zhiwen Xiao ,  Junhui Hou

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/13

    Abstract: The embodiments of present application provides an electrode assembly and a battery comprising a first current collector including a first end portion, a first bending segment, a first starting segment therebetween; a second current collector including a second end portion, a second bending segment, a second starting segment therebetween; the first and second bending segments are regions where the first and second current collectors are bent for the first time respectively, and a first and second electrode tabs are respectively arranged on the first and second starting segments, a distance between the first electrode tab and the first end portion is smaller than a distance between the first electrode tab and the first bending segment, a distance between the second electrode tab and the second end portion is greater than a distance between the second electrode tab and the second bending segment.

    Electrode assembly and battery
    8.
    发明授权
    Electrode assembly and battery 有权

    公开(公告)号：US10826131B2

    公开(公告)日：2020-11-03

    申请号：US16158485

    申请日：2018-10-12

    Applicant: Ningde Amperex Technology Limited

    Inventor： Baozhang Li ,  Weimin Jiao ,  Zhiwen Xiao ,  Junhui Hou

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/13

    Abstract: The embodiments of present application provides an electrode assembly and a battery comprising a first current collector including a first end portion, a first bending segment, a first starting segment therebetween; a second current collector including a second end portion, a second bending segment, a second starting segment therebetween; the first and second bending segments are regions where the first and second current collectors are bent for the first time respectively, and a first and second electrode tabs are respectively arranged on the first and second starting segments, a distance between the first electrode tab and the first end portion is smaller than a distance between the first electrode tab and the first bending segment, a distance between the second electrode tab and the second end portion is greater than a distance between the second electrode tab and the second bending segment.

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