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    Electrode assembly
    41.
    发明授权
    Electrode assembly 有权

    公开(公告)号：US10971706B2

    公开(公告)日：2021-04-06

    申请号：US16175883

    申请日：2018-10-31

    Applicant: Ningde Amperex Technology Limited

    Inventor： Jing Jiang ,  Kefei Wang

    IPC: H01M2/02 ,  H01M2/32 ,  H01M4/62 ,  H01M4/13 ,  H01M2/10 ,  H01M10/04 ,  H01M4/02

    Abstract: The present application relates to an electrode assembly and a secondary battery. The electrode assembly includes a cell and a protective layer. The cell includes a cell body and an electrode tab protruding from a top surface of the cell body. In a length direction of the cell, at least one end of the protective layer extends beyond the height at which the anode electrode in the cell body protrudes at the end, and the extended dimension is no more than 3 mm. As such, the burr of the anode electrode of the cell body is wrapped by the protective layer, which alleviates the phenomenon that the burr on the anode electrode pierces the package bag and chemically reacts with the aluminum layer of the package bag, thereby reducing the risk of leakage of the package bag.

    Electrolyte and electrochemical device
    42.
    发明授权
    Electrolyte and electrochemical device 有权

    公开(公告)号：US10833363B2

    公开(公告)日：2020-11-10

    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 ,  H01M4/13

    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-type cell
    43.
    发明授权
    Wound-type cell 有权

    公开(公告)号：US10693192B2

    公开(公告)日：2020-06-23

    申请号：US16177087

    申请日：2018-10-31

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Qiao Zeng ,  Jiacai Cai ,  Kefei Wang ,  Yu Luo

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

    Abstract: The present disclosure provides a wound-type cell which includes: a first electrode plate; a second electrode plate; a separator disposed between the first electrode plate and the second electrode plate; a first electrode tab electrically connected to the first electrode plate; and a second electrode tab electrically connected to the second electrode plate; in which a third winding start end of the separator is positioned at an outer side of a second winding start end of the second electrode plate in a length direction; the third winding start end extends along a direction away from a second end of the second winding start end and the third winding start end is not folded back.

    Wound cell having single-side coated areas
    44.
    发明授权
    Wound cell having single-side coated areas 有权

    公开(公告)号：US10651511B2

    公开(公告)日：2020-05-12

    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 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/12 ,  H01M10/14 ,  H01M10/28

    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.

    BATTERY
    45.
    发明申请
    BATTERY 审中-公开

    公开(公告)号：US20190319247A1

    公开(公告)日：2019-10-17

    申请号：US16133953

    申请日：2018-09-18

    Applicant: Ningde Amperex Technology Limited

    Inventor： Hongzhan Yang ,  Jing Jiang ,  Qiao Zeng ,  Kefei Wang

    IPC: H01M2/18 ,  H01M10/04 ,  H01M2/02 ,  H01M2/20

    Abstract: Embodiments of the present application disclose a battery to reduce the volume of the battery, improve the energy density of the battery, and further improve the bottom molding effect of the battery, as well as the safety performance and service life of the battery. The battery comprises an electrode assembly and a package film for packaging the electrode assembly, the package film including a folding portion, the folding portion including a first segment attached to the end face of the electrode assembly and a second segment connected to the first segment. The first segment is arranged between the second segment and the electrode assembly, and the second segment includes a multilayer package films.

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