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    Lithium-ion secondary battery, battery module, battery pack, and powered device
    11.
    发明授权
    Lithium-ion secondary battery, battery module, battery pack, and powered device 有权

    公开(公告)号：US11962007B2

    公开(公告)日：2024-04-16

    申请号：US18179650

    申请日：2023-03-07

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Liangfan Xu ,  Xing Li ,  Haizu Jin

    IPC: H01M4/525 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

    CPC classification number: H01M4/525 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

    Abstract: The disclosure relates to the field of electrochemistry, and in particular to a lithium-ion secondary battery, a battery module, a battery pack, and a powered device. A lithium-ion secondary battery, includes a bare cell accommodating cavity in which a bare cell group including one or more bare cells A and one or more bare cells B is arranged, wherein the bare cell A includes a first positive electrode sheet including a first positive-electrode active material selected from a single crystal or single crystal-like low-nickel ternary positive electrode material A1, the bare cell B includes a second positive electrode sheet including a second positive-electrode active material and/or a third positive-electrode active material, the second positive-electrode active material is selected from a polycrystalline high-nickel ternary positive electrode material B1, and the third positive-electrode active material is selected from a polycrystalline low-nickel ternary positive electrode material B2.

    Positive electrode plate, electrochemical device and safety coating
    13.
    发明授权
    Positive electrode plate, electrochemical device and safety coating 有权

    公开(公告)号：US11349126B2

    公开(公告)日：2022-05-31

    申请号：US16762507

    申请日：2018-11-07

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Xiaowen Zhang ,  Haizu Jin ,  Xing Li

    IPC: H01M4/66 ,  C09D127/08 ,  C09D127/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/02

    Abstract: The present application relates to a positive electrode plate, an electrochemical device and a safety coating. The positive electrode plate comprises a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, the safety coating comprising a fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The positive electrode plate can quickly disconnect circuit when the electrochemical device (such as a capacitor, primary battery, or secondary battery, and the like) is in a high temperature condition or an internal short circuit occurs, thereby improving high temperature safety performance of the electrochemical device.

    POSITIVE ELECTRODE PLATE, ELECTROCHEMICAL DEVICE AND SAFETY COATING
    14.
    发明申请
    POSITIVE ELECTRODE PLATE, ELECTROCHEMICAL DEVICE AND SAFETY COATING 审中-公开

    公开(公告)号：US20190140281A1

    公开(公告)日：2019-05-09

    申请号：US16165822

    申请日：2018-10-19

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Zhenhua LI ,  Xing Li ,  Xiaowen Zhang

    IPC: H01M4/62 ,  H01M4/1315

    Abstract: The present invention relates to a positive electrode plate, an electrochemical device and a safety coating. The positive electrode plate comprises a current collector, a positive electrode active material layer and a safety coating disposed between the current collector and the positive electrode active material layer, the safety coating layer comprising a fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The positive electrode plate can quickly open the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

    BATTERY CELL, BATTERY, AND ELECTRIC DEVICE
    15.
    发明申请
    BATTERY CELL, BATTERY, AND ELECTRIC DEVICE 有权

    公开(公告)号：US20240396128A1

    公开(公告)日：2024-11-28

    申请号：US18797531

    申请日：2024-08-08

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Liangfan Xu ,  Qianqian Zhang ,  Hu Xu ,  Xing Li ,  Shaojun Niu ,  Haizu Jin

    IPC: H01M50/15 ,  H01M50/103 ,  H01M50/249 ,  H01M50/529 ,  H01M50/55 ,  H01M50/553 ,  H01M50/566

    Abstract: This application provides a battery cell, a battery, and an electric device. The battery cell includes: an electrode assembly; a housing, where the housing has a first opening for accommodating the electrode assembly; an end cover configured to cover the first opening, where the end cover has a protruding structure, the protruding structure protrudes along a first direction away from the interior of the battery cell, and the first direction is a thickness direction of the end cover; and an electrode terminal, where the electrode terminal has a protruding portion protruding from the protruding structure along a second direction, and the second direction is perpendicular to the first direction. The battery cells are interconnected in the second direction through the protruding portions of the electrode terminals, which can enhance the strength of the connection between the battery cells.

    Binder compound and method for preparing same
    16.
    发明授权
    Binder compound and method for preparing same 有权

    公开(公告)号：US11952466B2

    公开(公告)日：2024-04-09

    申请号：US18381178

    申请日：2023-10-18

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Jianghui Lin ,  Yanjie Zhao ,  Xing Li ,  Haizu Jin

    IPC: C08G79/14 ,  H01M4/62

    CPC classification number: C08G79/14 ,  H01M4/623 ,  H01M2220/20

    Abstract: The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R1, R2, and R3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R4 represents —COOM; R5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

    BATTERY AND POWER CONSUMING DEVICE
    20.
    发明申请
    BATTERY AND POWER CONSUMING DEVICE 有权

    公开(公告)号：US20230121633A1

    公开(公告)日：2023-04-20

    申请号：US18068524

    申请日：2022-12-20

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Yu Tang ,  Peng Wang ,  Xiayi Wu ,  Xiang Wang ,  Zhenhua Li ,  Xing Li

    IPC: H01M50/242 ,  H01M50/204 ,  H01M50/291 ,  H01M10/16

    Abstract: Embodiments provide a battery and a power consuming device. In some embodiments, the battery includes: a case assembly, including a case and fixed beams fixed in the case; a battery module, arranged in the case and including a plurality of battery cells; a first restraining component, configured to cover the battery module and fixed to the fixed beams; and a second restraining component, located on the side of the first restraining component away from the battery module and fixed to the fixed beams, wherein the second restraining component is provided with a weak area, and the second restraining component is configured to apply a restraining force to the first restraining component and to allow expansion of the battery cells in the weak area.

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