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    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND ELECTRONIC APPARATUS
    11.
    发明公开
    ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20230231144A1

    公开(公告)日：2023-07-20

    申请号：US18175824

    申请日：2023-02-28

    Applicant: Ningde Amperex Technology Limited

    Inventor： Shan ZHU ,  Ting GUAN ,  Fei WU ,  Qiao ZENG

    IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/583 ,  H01M4/62

    CPC classification number: H01M4/667 ,  H01M4/583 ,  H01M4/623 ,  H01M10/0525

    Abstract: An electrode plate includes: a current collector, including, in a width direction, a first edge region, a second edge region, and a middle region located between the first edge region and the second edge region; a first coating layer, including a first portion and a second portion disposed on the first edge region and the second edge region respectively; and a second coating layer. A part of the second coating layer is disposed on the middle region, another part of the second coating layer is disposed on the first coating layer. The second coating layer includes an active material. A first bonding force between the first portion and the first edge region and a second bonding force between the second portion and the second edge region are both greater than a third bonding force between the second coating layer and the middle region.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    12.
    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
    13.
    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.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    15.
    发明公开
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 审中-公开

    公开(公告)号：US20240258566A1

    公开(公告)日：2024-08-01

    申请号：US18626867

    申请日：2024-04-04

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

    IPC: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

    CPC classification number: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

    Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %≤(X+Y)≤about 8 wt %, about 0.1≤(X/Y)≤about 6, about 30 wt %≤Z≤about 50 wt %, and about 0.01≤(Y/Z)≤about 0.3; wherein the dinitrile compound is one or more compounds selected from adiponitrile, 1,4-dicyano-2-butene, and ethylene glycol bis(2-cyanoethyl) ether; and the trinitrile compound is one or more compounds selected from 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile; 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile; 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane; 1,1,1-tris(cyanoethoxymethylene)ethane; 1,1,1-tris(cyanoethoxymethylene)propane; 3-methyl-1,3,5-tris(cyanoethoxy)pentane; 1,2,7-tris(cyanoethoxy)heptane; 1,2,6-tris(cyanoethoxy)hexane; 1,2,5-tris(cyanoethoxy)pentane; and any combination thereof.

    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS
    17.
    发明公开
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20230261200A1

    公开(公告)日：2023-08-17

    申请号：US18193742

    申请日：2023-03-31

    Applicant: Ningde Amperex Technology Limited

    Inventor： Shan ZHU ,  Ting GUAN ,  Fei WU

    IPC: H01M4/62 ,  H01M4/13

    CPC classification number: H01M4/623 ,  H01M4/13 ,  H01M4/625

    Abstract: An electrochemical apparatus includes a positive electrode plate. The positive electrode plate includes a positive electrode current collector, a positive electrode active material layer, and a positive electrode coating layer. The positive electrode current collector includes a first zone, a second zone, and a third zone. The positive electrode active material layer includes a first portion, a second portion, and a third portion that are disposed in the first zone, the second zone, and the third zone, respectively. The positive electrode coating layer includes a fourth portion and a fifth portion that are disposed in the first zone and the second zone, respectively. Combined impedance of the first portion and the fourth portion is greater than impedance of the third portion, and combined impedance of the second portion and the fifth portion is greater than the impedance of the third portion.

    CHARGING METHOD, ELECTRONIC APPARATUS, AND STORAGE MEDIUM
    18.
    发明公开
    CHARGING METHOD, ELECTRONIC APPARATUS, AND STORAGE MEDIUM 审中-公开

    公开(公告)号：US20230238821A1

    公开(公告)日：2023-07-27

    申请号：US18192069

    申请日：2023-03-29

    Applicant: Ningde Amperex Technology Limited

    Inventor： Ting GUAN ,  Shan ZHU ,  Fei WU

    IPC: H02J7/00

    CPC classification number: H02J7/007182 ,  H02J7/0013 ,  H02J7/0047

    Abstract: A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage Un in a charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn, of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the charging manner, where m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to a first charge cut-off voltage Um+1 in the charging manner, where Um+1=Un+k×(OCVn−OCVm), and 0

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    19.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20220407108A1

    公开(公告)日：2022-12-22

    申请号：US17885915

    申请日：2022-08-11

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

    IPC: H01M10/0566 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

    Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z; where about 2 wt %≤(X+Y)≤about 11 wt %, about 0.1≤(X/Y)≤about 8, and about 0.01≤(Y/Z)≤about 0.3. The dinitrile compound comprises a compound of Formula (5): N—R2—(O—R3)n—O—R4—CN (5). 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
    20.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20210028490A1

    公开(公告)日：2021-01-28

    申请号：US17064959

    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 includes 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 trinitrile compound includes at least one selected from the group consisting of: 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile; 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile; 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane; 1,1,1-tris(cyanoethoxymethylene)ethane; 1,1,1-tris(cyanoethoxymethylene)propane; 3-methyl-1,3,5-tris(cyanoethoxy)pentane; 1,2,7-tris(cyanoethoxy)heptane; 1,2,6-tris(cyanoethoxy)hexane; and 1,2,5-tris(cyanoethoxy)pentane. 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.

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