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：US20230231271A1

公开(公告)日：2023-07-20

申请号：US18182375

申请日：2023-03-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuping Huang ,  Yunjian Ma ,  Mingfeng Lin ,  Yanhui Li ,  Jianping Zhang ,  Bing Chen ,  Yumeng Liu ,  Zhiyu Xia

IPC: H01M50/431 ,  H01M50/46 ,  H01M10/04

CPC classification number: H01M50/431 ,  H01M10/0431 ,  H01M50/46

Abstract: An electrode assembly, a battery, a battery module, a battery pack and a powered device are provided. The electrode assembly comprises a first electrode piece, a second electrode piece with opposite polarity to the first electrode piece, and a separator arranged between the first electrode piece and the second electrode piece; the electrode assembly is obtained by winding the first electrode piece, the second electrode piece and the separator; and the separator comprises a base film and a coating provided on at least part of the surface of the base film, and the coating comprises a hydraulic inorganic material capable of hardening upon reaction with water. The present application can solve the problem of central hole collapse in the electrode assembly and the battery, and improve the safety performance and cycle performance of the battery.