公开(公告)号：US20240283034A1

公开(公告)日：2024-08-22

申请号：US18649132

申请日：2024-04-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Long SUN ,  Lan XIE ,  Chenping WANG ,  Xiaohui WU ,  Zhen LIN

IPC: H01M10/42 ,  H01M10/613 ,  H01M10/625

CPC classification number: H01M10/4228 ,  H01M10/425 ,  H01M10/4285 ,  H01M10/613 ,  H01M10/625

Abstract: This application relates to a liquid leak detection method and apparatus, a battery control unit, and a battery management system. The method includes: obtaining a gas concentration detection signal output separately by a plurality of target gas sensors in a battery box, where the gas concentration detection signal is used for indicating a measured gas concentration; obtaining position information of each target gas sensor in the battery box; and determining a leaking region in the battery box based on the gas concentration detection signal and the position information of each target gas sensor. To sum up, in an embodiment of this application, the leaking region in the battery box can be located by analyzing the gas concentration detection signals and position information of a plurality of target gas sensors in the battery box, so that prompt information used for indicating the leaking region can be output subsequently.

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%.

公开(公告)号：US20230299357A1

公开(公告)日：2023-09-21

申请号：US18324397

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ying SHA ,  Lan XIE ,  Zhen LIN

IPC: H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M2300/0037 ,  H01M2300/0034

Abstract: An electrolyte includes an organic solvent and one or more of a compound represented by general formula (I) or general formula (II):




A content of the compound in the electrolyte is 0.01 wt %-5 wt % and a content of ethylene carbonate in the organic solvent is less than or equal to 3 wt %.

公开(公告)号：US20220120815A1

公开(公告)日：2022-04-21

申请号：US17561750

申请日：2021-12-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yimin WEI ,  Zhen LIN ,  Xingsheng WEI

IPC: G01R31/388 ,  G01R31/36 ,  G01R31/367

Abstract: The present application discloses a method, apparatus, device and medium for estimating performance parameters of a battery. The method for estimating performance parameters of a battery includes: generating a first curve segment to be calibrated during a process of adjusting a battery capacity in a first capacity interval with a first capacity value as an endpoint value; determining, in a preset reference curve, a first target curve segment that matches the first curve segment to be calibrated; determining a SOC interval corresponding to the first target curve segment as a SOC interval of the first curve segment to be calibrated; and estimating the performance parameters of the battery based on the SOC interval of the first curve segment to be calibrated, the performance parameters include a current SOC and/or a current battery capacity.