中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

63 records (took 0.025 seconds)

    WOUND-TYPE CELL
    51.
    发明申请
    WOUND-TYPE CELL 审中-公开

    公开(公告)号：US20170288273A1

    公开(公告)日：2017-10-05

    申请号：US15457775

    申请日：2017-03-13

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

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

    Abstract: The present disclosure provides a wound-type cell which comprises: a first electrode plate having a first current collector and a first active material layer coated on a surface of the first current collector; a second electrode plate having a second current collector and a second active material layer coated on a surface of the second current collector, and a second winding start end of the second electrode plate is positioned at an inner side of a first winding start end of the first electrode plate in a thickness direction; a separator; a first electrode tab; and a second electrode tab. A third winding start end of the separator is positioned at an outer side of the second winding start end of the second electrode plate in a length direction, extends along a direction away from a second end of the second winding start end and is not folded back.

    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
    54.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20240356022A1

    公开(公告)日：2024-10-24

    申请号：US18757872

    申请日：2024-06-28

    Applicant: Ningde Amperex Technology Limited

    Inventor： Kefei WANG

    IPC: H01M4/525 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/0567

    CPC classification number: H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025

    Abstract: An electrochemical device includes: a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode includes a positive current collector and a positive active material layer formed on the positive current collector. The positive active material layer includes a positive active material. The positive active material includes a first element. The first element includes at least one of lanthanum, yttrium, cerium, or tungsten. Based on a mass of the positive active material, a mass percentage of the first element is a %, satisfying: a≤1. The electrolyte solution includes a propionate ester and a cyano-containing compound. The electrochemical device exhibits a reduced voltage drop and improved safety at high temperature and high voltage.

    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
    55.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20230395787A1

    公开(公告)日：2023-12-07

    申请号：US18454363

    申请日：2023-08-23

    Applicant: Ningde Amperex Technology Limited

    Inventor： Shengqi LIU ,  Xiaohu CAI ,  Kefei WANG ,  Qingwen ZHANG

    IPC: H01M4/36 ,  H01M10/0525

    CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M2004/028

    Abstract: An electrochemical device includes a positive electrode, the positive electrode includes a current collector and a film layer containing a positive active material. The film layer is disposed on at least one surface of the current collector. The positive active material includes a primary particle and/or a secondary particle. When a mass percent A of the primary particle in the positive active material based on a mass of the positive active material satisfies 20%≤A≤100%, the film layer, the positive active material, and the current collector satisfy: Dl≥Dv99−Dc; and, when a mass percent A′ of the primary particle in the positive active material based on the mass of the positive active material satisfies 0≤A′≤20%, the film layer, the positive active material, and the current collector satisfy: Dl≥1.1 Dv99.

    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS
    56.
    发明公开
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20230317961A1

    公开(公告)日：2023-10-05

    申请号：US18300731

    申请日：2023-04-14

    Applicant: Ningde Amperex Technology Limited

    Inventor： Kefei WANG

    IPC: H01M4/66 ,  H01M4/04 ,  H01M10/0567

    CPC classification number: H01M4/661 ,  H01M4/0404 ,  H01M10/0567 ,  H01M2004/027

    Abstract: An electrochemical apparatus, including a positive electrode, a negative electrode, and an electrolyte, where the negative electrode includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector, and the negative electrode current collector contains tin; and the electrolyte contains a sulfur-oxygen double bond-containing compound. The electrochemical apparatus has improved high-temperature cycling performance and overcharge protection performance.

    ELECTROCHEMICAL DEVICE
    60.
    发明申请
    ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20210408547A1

    公开(公告)日：2021-12-30

    申请号：US16648494

    申请日：2020-03-04

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Kefei WANG

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/0567

    Abstract: The subject application relates to an electrochemical device including a cathode, an anode and an electrolyte. The cathode includes a fluoropolymer which has an X-ray diffraction spectrum with a diffraction peak in the range of 34°≤2θ≤38°. The electrolyte includes a compound having 2 to 3 cyano groups. The electrochemical device of the present application has excellent cycle and high temperature storage properties.

Patent Agency Ranking