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    Current collector, electrode plate of the same and battery
    1.
    发明授权
    Current collector, electrode plate of the same and battery 有权

    公开(公告)号：US11024854B2

    公开(公告)日：2021-06-01

    申请号：US16209425

    申请日：2018-12-04

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Chengdu Liang ,  Huafeng Huang ,  Qisen Huang

    IPC: H01M4/66 ,  H01M2/34 ,  H01M10/48 ,  H01M10/0525 ,  H01M10/052 ,  H01M10/42 ,  H01M4/64 ,  H01M50/581

    Abstract: The present application relates to a current collector, an electrode plate, a battery and usages thereof. The current collector includes at least one conductive layer configured to support an electrode active material layer, and an insulation layer configured to support the at least one conductive layer. The conductive layer has a room temperature film resistance RS satisfying 0.01Ω/□≤RS≤0.15Ω/□. The current collector can significantly increase resistance in short-circuit and reduce current in the short-circuit, and reduce heat generated during the short-circuit and improving safety performance. The heat can be totally absorbed by the battery. Therefore, the resulted temperature rise of the battery is small, the damage to the battery caused by the short circuit can be limited to a “point”, and only a “point break” is formed, without influencing normal operation of the battery in a short time.

    Negative electrode plate, preparation method thereof and electrochemical device
    2.
    发明授权
    Negative electrode plate, preparation method thereof and electrochemical device 有权

    公开(公告)号：US11158846B2

    公开(公告)日：2021-10-26

    申请号：US16452541

    申请日：2019-06-26

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Changliang Sheng ,  Huafeng Huang ,  Qisen Huang

    IPC: H01M4/139 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/02

    Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector; a negative active material layer disposed on at least one surface of the negative current collector, the negative active material layer comprising opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; and an inorganic dielectric layer consisting of an inorganic dielectric material disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

    Battery
    3.
    发明授权
    Battery 有权

    公开(公告)号：US10749184B2

    公开(公告)日：2020-08-18

    申请号：US16514428

    申请日：2019-07-17

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Chengdu Liang ,  Huafeng Huang ,  Qisen Huang

    IPC: H01M4/66

    Abstract: A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm≤D2≤2 μm. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 1 μm to 5.9 μm.

    Current collector, electrode plate including the same and electrochemical device
    4.
    发明授权
    Current collector, electrode plate including the same and electrochemical device 有权

    公开(公告)号：US11177479B2

    公开(公告)日：2021-11-16

    申请号：US16342831

    申请日：2018-12-05

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Chengdu Liang ,  Huafeng Huang ,  Qisen Huang

    IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/64

    Abstract: The present disclosure relates to the field of battery and, in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector of the present disclosure includes an insulation layer and a conductive layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and is located on at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. The insulation layer has a thickness of D1 satisfying 1 μm≤D1≤10 μm. The conductive layer has a thickness of D2 satisfying 200 nm≤D2≤1.5 μm. The insulation layer has a tensile strength greater than or equal to 150 MPa.

    Battery
    5.
    发明授权
    Battery 有权

    公开(公告)号：US10658673B2

    公开(公告)日：2020-05-19

    申请号：US16161978

    申请日：2018-10-16

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Chengdu Liang ,  Huafeng Huang ,  Qisen Huang

    IPC: H01M4/66 ,  H01M10/42 ,  H01M4/02 ,  H01M4/62 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/056 ,  H01M4/04

    Abstract: A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm≤D2≤2 μm. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 6 μm to 12 μm.

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