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    ELECTROCHEMICAL DEVICE AND ELECTRICAL DEVICE
    86.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRICAL DEVICE 审中-公开

    公开(公告)号：US20230327248A1

    公开(公告)日：2023-10-12

    申请号：US18193698

    申请日：2023-03-31

    Applicant: Ningde Amperex Technology Limited

    Inventor： Xiaofeng Li ,  Peipei Guo ,  Sen Lin

    IPC: H01M50/188 ,  H01M50/105 ,  H01M50/178

    CPC classification number: H01M50/188 ,  H01M50/105 ,  H01M50/178

    Abstract: An electrochemical device includes an electrode assembly, a packaging bag accommodating the electrode assembly, and electrode terminals connected to the electrode assembly. The packaging bag includes a first seal edge, a third seal edge, a first sidewall connected to the first seal edge, a second sidewall connected to the third seal edge, and a third sidewall. The first sidewall includes a first section connected to the second sidewall; and an arc-shaped second section connected to the third sidewall and the first section. The first seal edge includes a first hem connected to the first section and a second hem connected to the first hem. The first hem is disposed along the thickness direction of the electrode assembly. The second hem includes a first part and a second part. The second part is connected to the second section and the first part and abuts against the second section.

    ELECTROLYTE AND ELECTROCHEMICAL APPARATUS
    87.
    发明公开
    ELECTROLYTE AND ELECTROCHEMICAL APPARATUS 审中-公开

    公开(公告)号：US20230275269A1

    公开(公告)日：2023-08-31

    申请号：US17281548

    申请日：2021-02-03

    Applicant: Ningde Amperex Technology Limited

    Inventor： Chunrui Xu ,  Yanyan Xu ,  Jianming Zheng ,  Chao Tang

    IPC: H01M10/0567

    CPC classification number: H01M10/0567

    Abstract: An electrolyte, including an additive A, wherein the additive A comprises a non-fluorinated lithium borate compound; and at least one additive selected from an additive B, an additive C, an additive D, or an additive E, wherein the additive B comprises at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate, or lithium difluorophosphate; the additive C comprises a compound comprising S═O; the additive D comprises a compound having 2 to 4 cyano groups; and the additive E comprises a silicon-containing carbonate compound. This application provides an electrolyte and an electrochemical apparatus. The electrolyte includes additives such as a non-fluorinated lithium borate compound, thereby effectively improving high-temperature storage performance, cycle performance, floating charge performance and/or overcharge performance of the electrochemical apparatus.

    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
    88.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20230275228A1

    公开(公告)日：2023-08-31

    申请号：US18129360

    申请日：2023-03-31

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Wei Tao ,  Ruitao Wu ,  Fei Wu

    IPC: H01M4/587 ,  H01M4/133

    CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M2004/021

    Abstract: An electrochemical device includes a positive electrode plate which includes a positive active material layer and a negative electrode plate which includes a negative current collector, a first negative active material layer, and a second negative active material layer. In a length direction, the first negative active material layer includes a first edge and a second edge opposite to the first edge. In the length direction, the second negative active material layer includes a third edge and a fourth edge opposite to the third edge. In the length direction, the positive active material layer includes a fifth edge and a sixth edge opposite to the fifth edge. The third edge protrudes beyond the first edge and the fifth edge in the length direction. A distance between the first edge and the fifth edge in the length direction of the negative electrode plate is less than 2 mm.

    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS
    90.
    发明公开
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20230246272A1

    公开(公告)日：2023-08-03

    申请号：US18179575

    申请日：2023-03-07

    Applicant: Ningde Amperex Technology Limited

    Inventor： Nan ZHANG ,  Yibo ZHANG ,  Kun YAN ,  Qiaoshu HU

    IPC: H01M50/186 ,  H01M50/54 ,  H01M50/119 ,  H01M50/121

    CPC classification number: H01M50/186 ,  H01M50/54 ,  H01M50/119 ,  H01M50/121

    Abstract: An electrochemical apparatus, including two electrode assemblies and a packaging shell, where the two electrode assemblies are respectively disposed in independent cavities in the packaging shell; each electrode assembly includes two tabs with opposite polarities, where at least one tab of one electrode assembly is connected to one of two tabs of the other electrode assembly, and orthographic projections of the two connected tabs along a seal thickness direction Z overlap to form a tab overlapping region; and a ratio α of an overlapping width of the two connected tabs along a seal length direction X at an outer edge of a seal of the packaging shell viewed along the seal thickness direction Z to a width of either of the two connected tabs satisfies 40%

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