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    SECONDARY BATTERY AND ELECTRODE PLATE THEREOF
    12.
    发明申请
    SECONDARY BATTERY AND ELECTRODE PLATE THEREOF 有权

    公开(公告)号：US20220093934A1

    公开(公告)日：2022-03-24

    申请号：US17543954

    申请日：2021-12-07

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Yaru ZHOU ,  Qingrui XUE ,  Zige ZHANG ,  Miao JIANG ,  Jing LI ,  Wei LI ,  Long WANG

    IPC: H01M4/66 ,  H01M4/70 ,  H01M50/531

    Abstract: The present disclosure relates to a secondary battery and an electrode plate. The electrode plate includes a current collector, an active material layer, a conductive structure, and a first protective layer. The current collector includes an insulating layer and a conductive layer disposed on the insulating layer. The conductive layer includes a main body portion and a protrusion portion. A surface of the main body portion facing away from the insulating layer is covered by the active material layer, while a surface of the protrusion portion facing away from the insulating layer is uncovered by the active material layer. The conductive structure is welded to the protrusion portion and thus a welded zone is formed. The first protective layer has elasticity, and is disposed on a side of the protrusion portion facing away from the insulating layer and is located between the welded zone and the active material layer.

    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND APPARATUS THEREOF
    13.
    发明申请
    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND APPARATUS THEREOF 有权

    公开(公告)号：US20220093932A1

    公开(公告)日：2022-03-24

    申请号：US17540263

    申请日：2021-12-02

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Wei LI ,  Jing LI ,  Qingrui XUE ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

    IPC: H01M4/66 ,  H01M4/62

    Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate of this application includes a current collector, an electrode active material layer provided on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector. The electrode active material layer is provided on a main body portion of the current collector in a zone referred to as a film zone, the electrical connection member and the current collector are welded and connected at an edge of the current collector, at a welding zone referred to as an transfer welding zone and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the film zone and the transfer welding zone, and is coated with no electrode active material layer.

    ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND APPARATUS
    14.
    发明申请
    ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, AND APPARATUS 有权

    公开(公告)号：US20220037669A1

    公开(公告)日：2022-02-03

    申请号：US17501902

    申请日：2021-10-14

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Jing LI ,  Qingrui XUE ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Yang LU

    IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/13

    Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical device, and an apparatus. The electrode plate of this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, the support layer is made of a polymer material or a polymer composite material, and a thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent.

    POSITIVE ELECTRODE PIECE, ELECTROCHEMICAL DEVICE AND APPARATUS
    15.
    发明申请
    POSITIVE ELECTRODE PIECE, ELECTROCHEMICAL DEVICE AND APPARATUS 有权

    公开(公告)号：US20210151769A1

    公开(公告)日：2021-05-20

    申请号：US17139124

    申请日：2020-12-31

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Jing LI ,  Qingrui XUE ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

    IPC: H01M4/66 ,  H01M4/133 ,  H01M4/134 ,  H01M4/62 ,  H01M4/60 ,  H01M10/0525

    Abstract: The present application relates to the field of battery, in particular to a positive electrode piece, an electrochemical device and an apparatus. The positive electrode piece of the present application includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer. The thickness D2 of one side of the conductive layer D2 satisfies 30 nm≤D2≤3 μm, the material of the conductive layer is aluminum or aluminum alloy, and the density of the conductive layer is 2.5 g/cm3 to 2.8 g/cm3, and a primer layer containing a conductive material and a binder is also arranged between the current collector and the electrode active material layer.

    SECONDARY BATTERY AND ELECTRODE PLATE
    19.
    发明公开
    SECONDARY BATTERY AND ELECTRODE PLATE 审中-公开

    公开(公告)号：US20240088395A1

    公开(公告)日：2024-03-14

    申请号：US18518597

    申请日：2023-11-23

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Zige ZHANG ,  Wei LI ,  Jing LI ,  Qingrui XUE ,  Miao JIANG ,  Yuqian WEN ,  Long WANG

    IPC: H01M4/64 ,  H01M10/04 ,  H01M50/533

    CPC classification number: H01M4/64 ,  H01M10/04 ,  H01M50/533 ,  H01M2004/021

    Abstract: An electrode plate includes an active material layer, a current collector including an insulating layer and first and second conductive layers sandwiching the insulating layer, and a conductive structure. The conductive structure includes a first conductive member including a first section arranged along a side of the first conductive layer and a second section extending from the first section and beyond the current collector in a direction away from the active material layer, and a second conductive member including a first connecting section connected to the second conductive layer, a bent section connected to the first connecting section and bent towards the first conductive member relative to the first connecting section, and a second connecting section bent backward relative to the bent section to be sandwiched between the first section and the first conductive layer.

    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND APPARATUS THEREOF
    20.
    发明申请
    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND APPARATUS THEREOF 有权

    公开(公告)号：US20220102732A1

    公开(公告)日：2022-03-31

    申请号：US17546076

    申请日：2021-12-09

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Wei LI ,  Jing LI ,  Qingrui XUE ,  Zige ZHANG ,  Xianwei YANG ,  Yang ZHANG

    IPC: H01M4/66 ,  H01M50/536 ,  H01M4/04 ,  H01M4/62

    Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate in this application comprises a current collector, an electrode active material layer disposed on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm, and the support layer is a polymer material layer or a polymer composite material layer; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, and viewed in a width direction of a coated surface of the electrode plate, the electrode active material layer includes 2n+1 zones based on compacted density.

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