公开(公告)号：US20230170491A1

公开(公告)日：2023-06-01

申请号：US18069067

申请日：2022-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Songjun SHI ,  Qian LIU ,  Jun PENG ,  Fajun HUANG

IPC: H01M4/62 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/628 ,  H01M4/525 ,  H01M4/625 ,  H01M4/623 ,  H01M4/505 ,  H01M2004/021

Abstract: A positive electrode sheet includes a current collector including a coating region and a non-coating region, a resistance layer disposed on the current collector and including a conductive agent, a first binder, and a first positive electrode active material, and a positive electrode active material layer including a second positive electrode active material, a conductive agent, and a second binder. A resistance of the resistance layer is greater than a resistance of the positive electrode active material layer. In a cross section of the positive electrode sheet, a projection of at least a part of the positive electrode active material layer on the current collector and a projection of the resistance layer on the current collector do not overlap. A polarization parameter P of the positive electrode sheet is in a range of 0.4-65.0 and equals ((1−S)/S)·(R1/R2).

公开(公告)号：US20230307927A1

公开(公告)日：2023-09-28

申请号：US18324879

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Qian LIU ,  Yonghuang YE ,  Haizu JIN ,  Fajun HUANG ,  Xiaofu XU ,  Jun PENG

IPC: H02J7/00 ,  H01M10/42 ,  G01R31/382 ,  G01R31/367 ,  G01R31/36

CPC classification number: H02J7/0019 ,  H01M10/4207 ,  G01R31/382 ,  G01R31/367 ,  G01R31/3648 ,  H01M10/425 ,  H01M2010/4271

Abstract: A control method of a battery apparatus includes acquiring a state parameter of a first battery module of the battery apparatus, controlling the first battery module and a charging device to form a first charging loop in response to the state parameter of the first battery module being less than a preset threshold, and controlling the first battery module, a second battery module of the battery apparatus, and the charging device to be connected in series to form a second charging loop in response to the state parameter of the first battery module being greater than or equal to the preset threshold. A charging rate of the first charging loop is higher than a charging rate of the second charging loop.