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    LITHIUM-ION BATTERY AND APPARATUS
    5.
    发明申请
    LITHIUM-ION BATTERY AND APPARATUS 有权

    公开(公告)号：US20220209296A1

    公开(公告)日：2022-06-30

    申请号：US17697265

    申请日：2022-03-17

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Tiancheng YI ,  Chunhua HU ,  Yao JIANG ,  Shushi DOU ,  Chengdu LIANG

    IPC: H01M10/0567 ,  C07D239/04 ,  C07D241/04 ,  C07D251/04 ,  C07D295/15 ,  C07D403/04 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569

    Abstract: The present application provides a lithium-ion battery and an apparatus, and the lithium-ion battery includes an electrode assembly and an electrolytic solution, the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separation film. A positive active material of the positive electrode sheet includes Lix1Coy1M1-y1O2-z1Qz1, 0.5≤x1≤1.2, 0.85≤y1≤1.0, 0≤z1≤0.1 M is selected from one or more of Al, Ti, Zr, Y, and Mg, and Q is selected from one or more of F, Cl, and S. The electrolytic solution contains vinylene carbonate, fluoroethylene carbonate, 1,3-propane sultone, and an additive A. The additive A is a polynitrile six-membered nitrogen-heterocyclic compound with a relatively low oxidation potential. The lithium-ion battery has superb cycle performance and storage performance, especially under high-temperature and high-voltage conditions.

    LITHIUM-ION BATTERIES AND RELATED BATTERY MODULES, BATTERY PACKS AND DEVICES
    8.
    发明申请
    LITHIUM-ION BATTERIES AND RELATED BATTERY MODULES, BATTERY PACKS AND DEVICES 有权

    公开(公告)号：US20220021020A1

    公开(公告)日：2022-01-20

    申请号：US17320258

    申请日：2021-05-14

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Chengdu LIANG ,  Cuiping Zhang ,  Changlong Han ,  Ming Zhang ,  Peipei Chen ,  Hailin Zou

    IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/0568 ,  H01M4/131 ,  H01M10/0567 ,  H01M10/0569

    Abstract: This application relates to lithium-ion batteries and related battery modules, battery packs and devices. Specifically, the lithium-ion battery includes a positive electrode plate, a negative electrode plate, an electrolyte, and a separator, wherein the positive electrode plate includes aluminum foil as a positive electrode current collector, and a content of element copper atom as an impurity per unit area of the aluminum foil is from 0.009 g/m2 to 0.021 g/m2, and the electrolyte contains first lithium salt and additive A, and the first lithium salt is a fluorine-containing sulfonimide lithium salt, and relative to total molar amount of lithium salt in the electrolyte, the fluorine-containing sulfonimide lithium salt has a molar amount of 30 mol % or higher; and the additive A is at least one of a phosphate compound containing an unsaturated bond, a cyclic compound containing a —SO2— bond and a silicon-oxygen compound containing an unsaturated bond.

    ELECTRODE PLATE AND ELECTROCHEMICAL DEVICE
    9.
    发明申请
    ELECTRODE PLATE AND ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20210288329A1

    公开(公告)日：2021-09-16

    申请号：US15734469

    申请日：2019-11-20

    Applicant: Contemporary Amperex Technology Co., Limited

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

    IPC: H01M4/66 ,  H01M4/62 ,  H01M4/13 ,  H01M10/0525

    Abstract: The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

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