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    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE INCLUDING SAME
    42.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE INCLUDING SAME 审中-公开

    公开(公告)号：US20230163311A1

    公开(公告)日：2023-05-25

    申请号：US17054207

    申请日：2019-12-25

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Kefei WANG

    IPC: H01M4/66 ,  H01M4/133

    CPC classification number: H01M4/663 ,  H01M4/133 ,  H01M2004/021 ,  H01M2300/0025

    Abstract: An electrochemical device, including a cathode; an electrolyte; and an anode. The electrolyte includes a phosphorus and oxygen containing compound, and the anode includes an anode current collector and an anode mixture layer formed on the anode current collector, and after 100 charge and discharge cycles, an area of lithium precipitation of a surface of the anode mixture layer is 2% or below based on a total surface area of the anode mixture layer. The electrochemical device has improved cycle performance, storage performance and safety performance.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    46.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20210028489A1

    公开(公告)日：2021-01-28

    申请号：US17064782

    申请日：2020-10-07

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

    IPC: H01M10/0566 ,  H01M10/0525

    Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the content X of the nitrile compound and the content Y of the trinitrile compound meet the conditions represented by Formula (1) and Formula (2): {about 2 wt %≤(X+Y)≤about 11 wt % . . . (1), about 0.1≤(X/Y)≤about 8 . . . (2)}. The electrolyte further includes at least one selected from the group consisting of a cyclic carbonate ester having a carbon-carbon double bond, a fluorinated chain carbonate ester, a fluorinated cyclic carbonate ester, and a compound having a sulfur-oxygen double bond. The electrolyte is capable of effectively inhibiting the increase in DC internal resistance of an electrochemical device so that the electrochemical device has excellent cycle and storage performance.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME
    47.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME 审中-公开

    公开(公告)号：US20200099103A1

    公开(公告)日：2020-03-26

    申请号：US16212033

    申请日：2018-12-06

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Kefei WANG

    IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/48 ,  H01M4/13

    Abstract: The present application relates to an electrolyte, and an electrochemical device comprising the electrolyte. The electrolyte comprises a fluorinated cyclic carbonate and a multi-nitrilemulti-nitrile compound having an ether bond, wherein based on the total weight of the electrolyte, the weight percentage (Cf) of the fluorinated cyclic carbonate is greater than the weight percentage (Cn) of the multi-nitrilemulti-nitrile compound having an ether bond. The electrolyte of the present application can control the expansion of the electrochemical device, so that the electrochemical device has excellent cycle, storage and/or floating-charge performance.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    48.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 审中-公开

    公开(公告)号：US20200099098A1

    公开(公告)日：2020-03-26

    申请号：US16211853

    申请日：2018-12-06

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

    IPC: H01M10/0566 ,  H01M10/0525

    Abstract: The present application relates to an electrolyte and an electrochemical device comprising the electrolyte. The electrolyte comprises a dinitrile compound, a trinitrile compound, and propyl propionate, wherein, based on the total weight of the electrolyte, the content X of the nitrile compound and the content Y of the trinitrile compound meet the conditions represented by Formula (1) and Formula (2): {about 2 wt %≤(X+Y)≤about 11 wt % . . . (1), about 0.1≤(X/Y)≤about 8 . . . (2)}. The electrolyte of the present application is capable of effectively inhibiting the increase in DC internal resistance of an electrochemical device so that the electrochemical device has excellent cycle and storage performance.

    WOUND CELL
    49.
    发明申请
    WOUND CELL 审中-公开

    公开(公告)号：US20180083319A1

    公开(公告)日：2018-03-22

    申请号：US15649820

    申请日：2017-07-14

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Liangzhen XIAO ,  Qiao ZENG ,  Kefei WANG

    IPC: H01M10/0587 ,  H01M10/28 ,  H01M10/0525 ,  H01M10/04 ,  H01M10/14 ,  H01M10/12

    CPC classification number: H01M10/0587 ,  H01M10/0431 ,  H01M10/0459 ,  H01M10/0525 ,  H01M10/125 ,  H01M10/14 ,  H01M10/286

    Abstract: Provided is a wound cell, formed by winding of a first and second separator, a first and second electrode plate from start ends thereof, outermost circle of second electrode plate includes second single-side coated area, surface of which facing center of the wound cell is second blank current collector area not coated with second active material, portion of first electrode plate opposite to second blank current collector area includes first single-side coated area, surface of which away from the center of the wound cell is first blank current collector area not coated with first active material; tail end of first electrode plate contains first blank foil area, portion of second electrode plate opposite to first blank foil area contains second blank foil area; start ends of first and second single-side coated area are located at two opposite sides in thickness direction of the cell.

    WOUND-TYPE CELL AND WINDING MANDREL
    50.
    发明申请
    WOUND-TYPE CELL AND WINDING MANDREL 审中-公开

    公开(公告)号：US20170288274A1

    公开(公告)日：2017-10-05

    申请号：US15457778

    申请日：2017-03-13

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Qiao ZENG ,  Kefei WANG ,  Jiacai CAI ,  Yu LUO

    IPC: H01M10/0587 ,  H01M10/04 ,  H01M2/26 ,  H01M10/0525

    CPC classification number: H01M10/0587 ,  H01M2/263 ,  H01M10/0409 ,  H01M10/0431 ,  H01M10/0525

    Abstract: The present disclosure provides a wound-type cell and a winding mandrel. The wound-type cell comprises: a first electrode plate having a blank first current collector which is positioned at a first winding start end and is not coated with the first active material layer; a second electrode plate having a blank second current collector which is positioned at a second winding start end and is not coated with the second active material layer, and the blank second current collector is positioned at an inner side of the blank first current collector; a separator; a first electrode tab; and a second electrode tab. A first end of the blank first current collector is beyond a second end of the blank second current collector in a length direction, and a position of the first electrode tab is beyond the second end of the blank second current collector in the length direction.

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