公开(公告)号：US20230083594A1

公开(公告)日：2023-03-16

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

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：US20240014401A1

公开(公告)日：2024-01-11

申请号：US18470231

申请日：2023-09-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang YU ,  Songjun SHI ,  Haizu JIN ,  Shutao SONG ,  Bing CHEN ,  Xinxin DU

IPC: H01M4/62 ,  H01M10/0587

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. A ratio of a thickness of the barrier layer to a porosity of the barrier layer is larger than or equal to 3.5 microns and smaller than or equal to 2000 microns.

公开(公告)号：US20240313337A1

公开(公告)日：2024-09-19

申请号：US18662093

申请日：2024-05-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qineng ZHONG ,  Chengyou XING ,  Miaomiao YAN ,  Shutao SONG ,  Xiaoxi ZHANG

IPC: H01M50/342 ,  H01M50/107 ,  H01M50/152 ,  H01M50/55

CPC classification number: H01M50/3425 ,  H01M50/107 ,  H01M50/152 ,  H01M50/55

Abstract: The embodiments of the present disclosure provide an end cover, battery cell, battery, and electrical device, which belong to the field of battery technology. The end cover includes the cover body and the arc groove. The arc groove is arranged in the cover body; and the cover body is configured to crack along the arc groove to release pressure inside the battery cell when the pressure or temperature inside the battery cell reaches the threshold, wherein the depth of the arc groove gradually increases from the middle position of the arc groove to the two ends of the arc groove.