公开(公告)号：US20240372100A1

公开(公告)日：2024-11-07

申请号：US18775460

申请日：2024-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shuhua CHEN ,  Huihui LIU ,  Xinghui WANG ,  Wenmeng ZHANG

IPC: H01M4/62 ,  H01M4/02

Abstract: The present application relates to a binder, a binder composition, a preparation method, a negative electrode slurry, a negative electrode plate, a secondary battery, a battery module, a battery pack and an electrical apparatus. The binder here comprises: an inner core material having a glass transition temperature of −50° C. to 0° C., and a shell layer material located on at least part of the surface of the inner core material and having a glass transition temperature of 60° C. to 100° C.

公开(公告)号：US20240079596A1

公开(公告)日：2024-03-07

申请号：US18501288

申请日：2023-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jian XU ,  Yunpeng XU ,  Yanying WU ,  Xinghui WANG

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/139

CPC classification number: H01M4/623 ,  H01M4/0404 ,  H01M4/139

Abstract: An electrode plate, which includes a current collector and an active material layer arranged on at least one surface of the current collector. The active material layer includes an electrode active material and a softener. The softener includes one or more of A diblock copolymer A-B and a triblock copolymer A-B-A, where block A includes a polyether segment, and block B includes one or more of a polyamide segment, a polyvinylpyrrolidone segment and a polyacrylonitrile segment.

公开(公告)号：US20230420655A1

公开(公告)日：2023-12-28

申请号：US18464888

申请日：2023-09-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hengxu ZHUANG ,  Yanying WU ,  Xinghui WANG

IPC: H01M4/36 ,  H01M4/60 ,  H01M4/62 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M4/60 ,  H01M4/623 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode sheet includes a positive electrode current collector and a positive electrode film disposed on at least one surface of the positive electrode current collector and including an additive. The additive includes a structural unit made from acrylonitrile and a structural unit made from a monomer represented by following formula:




where R1, R2, R3, and R4 are each independently selected from hydrogen, an alkyl group with 1-8 carbon atoms, or a saturated carboxylic acid group with 1-8 carbon atoms, and at least one of R1, R2, R3, or R4 is selected from the saturated carboxylic acid group with 1-8 carbon atoms.

公开(公告)号：US20230307648A1

公开(公告)日：2023-09-28

申请号：US18202487

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cong CHENG ,  Junguang CHEN ,  Haile PEI ,  Shengwu ZHANG ,  Xinghui WANG ,  Ning WANG

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/5825 ,  H01M4/505 ,  H01M4/525 ,  H01M2220/20 ,  H01M2004/028

Abstract: The present application relates to an aqueous positive electrode sheet, which may include a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer may include an aqueous binder, where the porosity of a surface area of the positive electrode active substance layer may be greater than the porosity of an inner area of the positive electrode active substance layer, and the average particle size of the positive electrode active material in the surface area may be greater than the average particle size of the positive electrode active material in the inner area. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.

公开(公告)号：US20240282966A1

公开(公告)日：2024-08-22

申请号：US18623423

申请日：2024-04-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yunpeng XU ,  Jian XU ,  Yanying WU ,  Xinghui WANG

IPC: H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M10/0525

Abstract: A functional polymer, an electrode slurry, an electrode plate, a battery and a power consuming device are described. The functional polymer comprises structural units represented by formula (A), formula (B) and formula (C). The functional polymer can increase the dispersion stability of the electrode slurry and also have the function of toughening, so as to increase the dispersion uniformity of the components in an electrode active layer while increasing its toughness, and further increase the cycling stability of the battery.

公开(公告)号：US20230395803A1

公开(公告)日：2023-12-07

申请号：US18448023

申请日：2023-08-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LU ,  Gaihong ZHU ,  Shisong LI ,  Xinghui WANG

IPC: H01M4/62 ,  H01M4/04

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M2004/027

Abstract: A negative electrode composition includes a negative active material and a plasticizer. The plasticizer includes a first plasticizer. The first plasticizer includes at least one of a POSS-containing block copolymer or a polyester containing a —[O—CH(CH3)—C(═O)]— structural unit.

公开(公告)号：US20230335722A1

公开(公告)日：2023-10-19

申请号：US18331246

申请日：2023-06-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jingjing PU ,  Yanying WU ,  Xinghui WANG

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/249

CPC classification number: H01M4/366 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/249 ,  H01M2004/028

Abstract: A positive electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive electrode plate includes a positive current collector, and a positive active material layer disposed on at least one surface of the positive current collector. The positive active material layer includes a first active material layer and a second active material layer that are sequentially stacked in a direction away from the surface. The first active material layer includes a first composite particle. The first composite particle includes a first lithium iron phosphate particle and a first carbon layer that coats a surface of the first lithium iron phosphate particle. The second active material layer includes a second composite particle. The second composite particle includes a second lithium iron phosphate particle and a second carbon layer that coats a surface of the second lithium iron phosphate particle.