公开(公告)号：US20240274822A1

公开(公告)日：2024-08-15

申请号：US18640001

申请日：2024-04-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan Wu ,  Ming Zhang ,  Yale Wu

IPC: H01M4/62 ,  H01M4/02

CPC classification number: H01M4/623 ,  H01M2004/021 ,  H01M2004/027

Abstract: This application relates to a negative electrode plate including a negative electrode current collector and a negative electrode film layer on at least one surface of the negative electrode current collector, where the negative electrode film layer includes a fluoropolymer, the fluoropolymer includes at least one of a polymer of a monomer in formula 1 and a copolymer of a monomer in formula 1 and a monomer in formula 2, and the fluoropolymer is present in the negative electrode film layer in form of spherical particles. This application further relates to a preparation method of negative electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus.

公开(公告)号：US11909048B2

公开(公告)日：2024-02-20

申请号：US18208350

申请日：2023-06-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan Wu ,  Ming Zhang

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure provides a positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula:






where R1, R2, R3, R4, R5, and R6 are as defined in the specification.

公开(公告)号：US11990624B2

公开(公告)日：2024-05-21

申请号：US18340019

申请日：2023-06-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan Wu ,  Ming Zhang

IPC: H01M4/62 ,  C07C43/23 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/62 ,  C07C43/23 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/5825 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode slurry contains polyether polyol, where the polyether polyol has the following constitutional formula:




where R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and Y are as defined in the specification.

公开(公告)号：US11646455B2

公开(公告)日：2023-05-09

申请号：US17884538

申请日：2022-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huang Tang ,  Ming Zhang ,  Hao Dong ,  Qifan Wu ,  De Lin

IPC: C08F220/56 ,  H01M10/42 ,  H01M4/62 ,  H01M4/02

CPC classification number: H01M10/4235 ,  C08F220/56 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028

Abstract: A secondary battery includes a positive electrode sheet which includes a positive-electrode current collector, a positive-electrode active material layer, and a coating layer arranged between the positive-electrode current collector and the positive-electrode active material layer. The coating layer includes a conductive agent and a copolymer.