公开(公告)号：US20230324472A1

公开(公告)日：2023-10-12

申请号：US18207685

申请日：2023-06-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Shan HUANG ,  Wei LI ,  Zhonghong LI

IPC: G01R31/52 ,  H02J7/00 ,  G01R31/3842

CPC classification number: G01R31/52 ,  G01R31/3842 ,  H02J7/00036 ,  H02J7/0029

Abstract: Embodiments of the present application provide a detection method and detection device for a battery, a battery management system, and a storage medium. The method may include: acquiring a current voltage of a battery; sending a charging request to a charging device, the charging request including a requested voltage, the charging request being used to request the charging device to output the requested voltage to the battery, where the requested voltage may be smaller than the current voltage; acquiring a current of the battery within a duration in which the charging device outputs the requested voltage to the battery; and determining an internal short circuit condition of the battery according to the current.

公开(公告)号：US20220246992A1

公开(公告)日：2022-08-04

申请号：US17564537

申请日：2021-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kai WU ,  Huihui LIU ,  Zhonghong LI ,  Long WANG ,  Tuo ZHENG ,  Huan CHE

IPC: H01M10/0587 ,  H01M10/0585 ,  H01M50/103 ,  H01M50/209 ,  H01M4/66 ,  H01M10/0583 ,  H01M4/38

Abstract: An embodiment of the present application provide an electrode assembly, a battery cell, a battery, and an electrode assembly manufacturing equipment and method. Among that, the electrode assembly includes a negative electrode plate and a positive electrode plate which form a bending region. The positive electrode plate includes bending portions located in the bending region, the bending portion includes a positive electrode current collecting layer and a positive active substance layer, and at least one side surface of the positive electrode current collecting layer is provided with the positive active substance layer in a thickness direction of the positive electrode plate. At least one positive active substance layer is provided with the barrier layer, at least a part of the barrier layer is intercalated in the positive active substance layer provided with the barrier layer, and coats at least a part of particles in the positive active substance layer.

公开(公告)号：US20240291056A1

公开(公告)日：2024-08-29

申请号：US18655440

申请日：2024-05-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Shiliang LIN ,  Zhen LIN ,  Shuai SONG ,  Wei LI ,  Zhonghong LI ,  Kai WU

IPC: H01M10/48 ,  H01M10/42 ,  H01M10/44

CPC classification number: H01M10/482 ,  H01M10/441 ,  H01M10/488 ,  H01M2010/4271

Abstract: An electrode assembly short circuit identification method includes: during charging, according to preset sampling time points, sequentially acquiring a voltage of an electrode assembly at each of the sampling time points; judging whether the electrode assembly has a continuous voltage drop according to the voltage acquired at each of the sampling time points; and determining whether the electrode assembly has a short circuit according to a judgment result.

公开(公告)号：US20240282973A1

公开(公告)日：2024-08-22

申请号：US18638670

申请日：2024-04-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Shiliang LIN ,  Xiaohui WU ,  Long WANG ,  Wei LI ,  Zhonghong LI ,  Kai WU

IPC: H01M4/62 ,  H01M4/02 ,  H01M10/0587

CPC classification number: H01M4/628 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode sheet has a straight portion and to-be-bent portions, A thickening layer is disposed on at least one side of a positive electrode current collector of at least some of the to-be-bent portions, the thickening layer is disposed between the positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer covers a surface of the thickening layer is a first positive electrode active material layer, and the positive electrode active material layer located in the straight portion is a second positive electrode active material layer. A ratio of a thickness of the first positive electrode active material layer to a thickness of the second positive electrode active material layer is 20-80%.