公开(公告)号：US11843119B2

公开(公告)日：2023-12-12

申请号：US18055623

申请日：2022-11-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang Yu ,  Songjun Shi ,  Haizu Jin ,  Shutao Song ,  Bing Chen ,  Xinxin Du

IPC: H01M4/62 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M4/628 ,  H01M10/0587 ,  H01M2004/021

Abstract: An electrode assembly includes a positive electrode plate and a negative electrode plate wound or stacked to form a bend region, and a barrier layer provided at the bend region. At least part of the barrier layer is located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and is configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region.

公开(公告)号：US20230117614A1

公开(公告)日：2023-04-20

申请号：US17937768

申请日：2022-10-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuping Huang ,  Mingfeng Lin ,  Yunjian Ma ,  Honggang Yu ,  Yanhui Li ,  Jianping Zhang ,  Yu Dai ,  Yidong Shen

IPC: H01M50/414 ,  H01M50/457 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583

Abstract: A battery, a battery module, a battery pack and an electric device are provided. In some embodiments, the battery includes: a positive electrode, a separator and a negative electrode, wherein the separator includes a base film, a first coating provided on a first surface of the base film, and a second coating provided on a second surface of the base film, the first coating includes a first polar substance, and hydrogen bonds are formed between the first polar substance and a positive binder; hydrogen bonds are formed between the second polar substance and a negative binder and/or a negative active component. In the present disclosure, binding forces between the separator and the positive electrode and the negative electrode may be increased by the hydrogen bonds, thus reducing a cycle expansion rate of a bare cell and improving a high-rate discharge performance and a cycle performance of the battery.

公开(公告)号：US20230352743A1

公开(公告)日：2023-11-02

申请号：US18325134

申请日：2023-05-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jun Ni ,  Honggang Yu ,  Huihui Shangguan ,  Xinxin Du ,  Daichun Tang

IPC: H01M10/0587 ,  H01M4/04 ,  H01M50/102 ,  H01M50/147 ,  H01M50/449

CPC classification number: H01M10/0587 ,  H01M4/0402 ,  H01M50/102 ,  H01M50/147 ,  H01M50/449 ,  H01M2220/20 ,  H01M10/0525

Abstract: An electrode assembly and a processing method and device therefor, a battery cell, a battery and a power consuming apparatus. In some embodiments, the electrode assembly comprises: a cathode plate, an anode plate, a separator and an electrically conductive layer, wherein the separator is used to separate the cathode plate and the anode plate; the cathode plate, the separator and the anode plate are wound to form a bent region; and the electrically conductive layer is configured such that at least a part of the electrically conductive layer is provided on a surface of the cathode plate in the bent region, the cathode plate comprising a covered region that is covered by the electrically conductive layer, and the electrically conductive layer being in parallel connection with the covered region.

公开(公告)号：US12062811B2

公开(公告)日：2024-08-13

申请号：US18105725

申请日：2023-02-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xitong Wang ,  Daichun Tang ,  Xinxin Du ,  Honggang Yu

IPC: H01M4/00 ,  H01M4/04 ,  H01M50/403 ,  H01M50/431 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/489 ,  H01M50/491

CPC classification number: H01M50/491 ,  H01M4/0404 ,  H01M4/0471 ,  H01M50/403 ,  H01M50/431 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/489

Abstract: An electrode sheet and a secondary battery comprising the same are provided. The electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector. A first inorganic separation layer and a second inorganic separation layer are sequentially formed on the active material layer. The first inorganic separation layer comprises a plurality of pores having a diameter of 300 nm to 600 nm, and each of the plurality of pores extends from the first inorganic separation layer toward the second inorganic separation layer and penetrates through the second inorganic separation layer. The pore diameter of the pores in the second inorganic separation layer is uniform.

公开(公告)号：US20230223660A1

公开(公告)日：2023-07-13

申请号：US18105725

申请日：2023-02-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xitong Wang ,  Daichung Tang ,  Xinxin Du ,  Honggang Yu

IPC: H01M50/491 ,  H01M50/446 ,  H01M4/04

CPC classification number: H01M50/491 ,  H01M50/446 ,  H01M4/0404 ,  H01M4/0471

Abstract: An electrode sheet and a secondary battery comprising the same are provided. The electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector. A first inorganic separation layer and a second inorganic separation layer are sequentially formed on the active material layer. The first inorganic separation layer comprises a plurality of pores having a diameter of 300 nm to 600 nm, and each of the plurality of pores extends from the first inorganic separation layer toward the second inorganic separation layer and penetrates through the second inorganic separation layer. The pore diameter of the pores in the second inorganic separation layer is uniform.