公开(公告)号：US20240222795A1

公开(公告)日：2024-07-04

申请号：US18592536

申请日：2024-03-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi Hong ,  Lei Li ,  Xiaonan Cheng ,  Jianrui Yang ,  Peng Wang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M50/451 ,  H01M50/42 ,  H01M50/426 ,  H01M50/46

CPC classification number: H01M50/451 ,  H01M50/42 ,  H01M50/426 ,  H01M50/46

Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on surface of the core layer structure, where the core layer structure includes a polyvinylidene fluoride polymer, and the shell layer structure includes a polyacrylate polymer. Polyvinylidene fluoride is a homopolymer with a crystallinity of about 50%, resulting in insufficient adhesion force. Therefore, in this application, the polyacrylate polymer is used to encapsulate the polyvinylidene fluoride polymer to obtain a core-shell-structured binder, so that the crystallinity of the polyvinylidene fluoride polymer in the core-shell-structured binder is improved, and adhesion performance of the core-shell-structured binder is improved, thereby increasing adhesion force between a separator and an electrode plate via the binder.

公开(公告)号：US20240380072A1

公开(公告)日：2024-11-14

申请号：US18778968

申请日：2024-07-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi Hong ,  Lei Li ,  Xiaonan Cheng ,  Jianrui Yang ,  Haiyang Kang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M50/46 ,  B01J13/18 ,  C08F220/14 ,  C08K5/12 ,  H01M50/414 ,  H01M50/42 ,  H01M50/443

Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a capsule and a core material provided in the capsule, where the capsule includes an organic polymer, and the core material includes a plasticizer. The plasticizer is encapsulated as the core material inside the capsule of the organic polymer to improve adhesion performance of the organic polymer, so as to increase adhesion force between a separator and an electrode plate by the binder.

公开(公告)号：US20240304945A1

公开(公告)日：2024-09-12

申请号：US18658920

申请日：2024-05-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanyun Ma ,  Haiyi Hong ,  Xiaonan Cheng ,  Peng Wang ,  Lei Chao ,  Jianrui Yang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/434

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/434

Abstract: This application discloses a separator and a preparation method therefor, a battery, and an electric apparatus. The coating is formed on at least part of a surface of the substrate, the coating includes composite particles, first inorganic particles, and a binder, the composite particles form bulges on a surface of the coating, the composite particles include polyacrylate particles and ion-conducting particles, and the ion-conducting particle is present between at least two polyacrylate particles. A mass ratio of the first inorganic particles to the ion-conducting particles is 1:0.007-0.06.

公开(公告)号：US20240313352A1

公开(公告)日：2024-09-19

申请号：US18657806

申请日：2024-05-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaonan Cheng ,  Haiyi Hong ,  Yanyun Ma ,  Jianrui Yang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M50/451 ,  H01M50/403 ,  H01M50/42 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/489

CPC classification number: H01M50/451 ,  H01M50/403 ,  H01M50/42 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/489 ,  H01M2220/20

Abstract: This application discloses a separator and a preparation method therefor, a battery, and an electric apparatus. The separator includes a substrate and a pressure-sensitive coating, where the pressure-sensitive coating is formed on at least a portion of surface of the substrate. The pressure-sensitive coating includes composite particles and a first plasticizer. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles, and solubility parameter of the first plasticizer and solubility parameter of the composite particles have a difference with an absolute value of 0.3 MPa1/2-4 MPa1/2.

公开(公告)号：US20240304819A1

公开(公告)日：2024-09-12

申请号：US18664259

申请日：2024-05-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaonan Cheng ,  Haiyi Hong ,  Lei Li ,  Jianrui Yang ,  Peng Wang ,  Yi Zheng ,  Chengdong Sun

IPC: H01M4/62 ,  H01M4/02 ,  H01M50/42

CPC classification number: H01M4/622 ,  H01M50/42 ,  H01M2004/021

Abstract: This application discloses a binder and a preparation method thereof, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and an electric apparatus, and relates to the field of battery technologies. The binder includes a coating layer and a core disposed in the coating layer, where the coating layer includes a polyacrylate copolymer, and the core includes ceramic. The binder is applied onto the separator and used in the battery, providing strong adhesion. This enhances the pre-cold pressing adhesion force and hardness of the battery cell, and reduces electrochemical impedance, thus improving the cycling performance of the battery.