公开(公告)号：US12062783B2

公开(公告)日：2024-08-13

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 ,  H01M4/02 ,  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 ,  H01M2220/20

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.

公开(公告)号：US20240356033A1

公开(公告)日：2024-10-24

申请号：US18760017

申请日：2024-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Sainan Mu ,  Ning Wang ,  Xinghui Wang ,  Shisong Li ,  Shengwu Zhang ,  Zhiting Wei

IPC: H01M4/62 ,  C08L5/00 ,  H01M4/02 ,  H01M4/133 ,  H01M4/587

CPC classification number: H01M4/622 ,  C08L5/00 ,  H01M4/133 ,  H01M4/587 ,  C08L2203/20 ,  H01M2004/021 ,  H01M2004/027

Abstract: The present application provides a negative electrode slurry, and a method for preparing the same, as well as a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical apparatus thereof, where the negative electrode slurry comprises a negative electrode binder, and the negative electrode binder comprises a polymer composed of a building block represented by formula (I). The negative electrode binder in the present application is used to effectively improve the problem of roller sticking of the negative electrode plate during cold pressing, and the negative electrode binder and the negative electrode active material are better cladded, thereby reducing solid electrolyte interface reconstruction during cycles, and improving cycling performance and storage performance of the secondary battery.

公开(公告)号：US20230307616A1

公开(公告)日：2023-09-28

申请号：US18314828

申请日：2023-05-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jichun Huang ,  Yanying Wu ,  Xinghui Wang

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/58

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/5825 ,  H01M2004/028

Abstract: A positive electrode plate, a secondary battery comprising the positive electrode plate, as well as a battery module, a battery pack, and a power consuming device are provided. The positive electrode plate of the present invention comprises: a positive current collector and a positive film layer comprising a first positive film layer and a second positive film layer, wherein the first positive film layer is disposed on at least one surface of the positive current collector and comprises a first positive active material comprising a hollow particle material, and the second positive film layer is disposed on the first positive film layer and comprises a second positive active material comprising a solid particle material.

公开(公告)号：US20240266541A1

公开(公告)日：2024-08-08

申请号：US18619084

申请日：2024-03-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haile Pei ,  Cong Cheng ,  Junguang Chen ,  Bingzi Yang ,  Shengwu Zhang ,  Xinghui Wang

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/136 ,  H01M4/58 ,  H01M4/66

CPC classification number: H01M4/622 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application provides a conductive slurry, a current collector, a secondary battery, a battery module, a battery pack, and an electric apparatus. The conductive slurry in this application includes the following raw material components: an aqueous binder including an aqueous polymer having polycarboxyl functionality, a conductive agent, a dispersant, and a curing agent, where the curing agent is used for cross-linking reaction with the aqueous polymer having polycarboxyl functionality. The conductive slurry in embodiments of this application has relatively good conductivity and adhesion performance as well as relatively good water resistance, which can improve stability of the secondary battery during operation and prolong its cycle life.

公开(公告)号：US11855291B1

公开(公告)日：2023-12-26

申请号：US18337135

申请日：2023-06-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiting Wei ,  Ning Wang ,  Xinghui Wang ,  Shisong Li ,  Shengwu Zhang ,  Sainan Mu

IPC: H01M4/66 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/662 ,  H01M2004/027

Abstract: A surface treatment composition includes, expressed as parts by weight, a first ingredient of 1 to 30 parts and a second ingredient of 1 to 30 parts. The first ingredient is a polycaprolactone modified with an acidic group and/or a salt of the acidic group. The second ingredient is selected from polyether-modified polyolefin acid, polyether-modified polyalkenoate salt, polyether-modified polyalkenoate ester, or a combination thereof.