公开(公告)号：US20230246157A1

公开(公告)日：2023-08-03

申请号：US18296794

申请日：2023-04-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhi LIU ,  Hailin FAN ,  Sitong LIU ,  Dongyang SHI

IPC: H01M4/04 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M10/0525

CPC classification number: H01M4/0404 ,  H01M4/525 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present disclosure provides an anode plate of a lithium-ion battery and application thereof. The anode plate comprises a current collector, an anode active material layer, and a specially designed lithium-precipitation inhibiting layer. The anode plate of the present disclosure can effectively avoid the lithium precipitation on a surface of the anode plate in an economical and simple way, and meanwhile effectively reduce a capacity ratio of an anode to a cathode, and improve the initial coulombic efficiency, cycle life, energy density, and safety of the lithium-ion battery.

公开(公告)号：US20220236333A1

公开(公告)日：2022-07-28

申请号：US17717605

申请日：2022-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhi LIU ,  Dongyang SHI

IPC: G01R31/3835 ,  H02J7/00 ,  H01M10/48 ,  H01M10/42 ,  B60L50/60 ,  B60L3/00 ,  B60L58/12 ,  B60L53/62

Abstract: Embodiments of this application provide a method and a device for detecting abnormality of a lithium battery, a battery management system, and a battery system. The method includes: obtaining a SOC value of the lithium battery in a charge process, where the SOC value is a ratio of a remaining capacity of the battery to a nominal capacity of the battery; changing a value of a charge current at a time point corresponding to an arbitrary SOC value, and obtaining a response signal within a time period of maintaining the changed charge current; and determining, based on response signals at time points corresponding to a plurality of SOC values, whether the lithium battery is abnormal. The method can implement non-destructive detection of abnormality of a lithium-ion battery, simplify operation, and achieve relatively high accuracy.

公开(公告)号：US20230064748A1

公开(公告)日：2023-03-02

申请号：US17831359

申请日：2022-06-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhi LIU ,  Yuzhen WANG

IPC: G01R31/389 ,  H02J7/00 ,  G01R31/374 ,  G01R31/3842

Abstract: This application provides a charge current test method and device, and a charge test system. The method includes: charging a to-be-tested battery at a first current under a first temperature until a voltage of the to-be-tested battery reaches a preset cutoff voltage, stopping charging whenever an increment of a state-of-charge value of the to-be-tested battery reaches a preset value during the charging of the to-be-tested battery, and continuing to charge after a duration of stopping charging reaches a first preset time length; calculating an impedance of the to-be-tested battery during the first preset time length; and determining, based on the impedance, a maximum state-of-charge value that is allowed to be reached when the charging is performed at the first current under the first temperature.