公开(公告)号：US11715867B2

公开(公告)日：2023-08-01

申请号：US17113585

申请日：2020-12-07

申请人： Contemporary Amperex Technology Co., Limited

发明人： Ningsheng Wu ,  Chengyou Xing ,  Yuanbao Chen ,  Peng Wang ,  Quankun Li

IPC分类号： H01M50/591 ,  H01M50/148 ,  H01M50/547 ,  H01M50/552 ,  H01M50/588 ,  H01M50/593

CPC分类号： H01M50/591 ,  H01M50/148 ,  H01M50/547 ,  H01M50/552 ,  H01M50/588 ,  H01M50/593 ,  H01M2220/20

摘要： The embodiments of the application provides an end cover assembly, a battery cell, a battery module and a device, the end cover assembly is used for the battery cell, the end cover assembly includes an end cover; an electrode terminal disposed on the end cover; an insulating member for insulating the electrode terminal and the end cover and disposed to surround the electrode terminal; wherein the insulating member abuts the electrode terminal, at least one of the insulating member and the electrode terminal is provided with a stress relief groove, the stress relief groove is configured to absorb stress generated by the electrode terminal's abutting the insulating member.

公开(公告)号：US12132230B2

公开(公告)日：2024-10-29

申请号：US18662836

申请日：2024-05-13

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Lulu Bai ,  Quankun Li ,  Ningsheng Wu ,  Wenlin Zhou ,  Ting Zheng

IPC分类号： H01M50/538 ,  H01M50/191 ,  H01M50/474 ,  H01M50/536 ,  H01M50/567 ,  H01M50/593

CPC分类号： H01M50/538 ,  H01M50/191 ,  H01M50/474 ,  H01M50/536 ,  H01M50/567 ,  H01M50/593 ,  H01M50/514 ,  H01M50/529 ,  H01M50/502 ,  H01M50/531 ,  H01M50/296

摘要： A battery cell includes electrode assemblies arranged in a first direction, where an end part of each electrode assembly along a second direction perpendicular to the first direction is provided with a tab; and a connection member configured to connect tabs of the electrode assemblies and an electrode terminal of the battery cell. The connection member includes a main body portion and a pin, the main body portion extends along the first direction, and includes a first surface and a second surface perpendicular to the second direction, the main body portion is provided with a plurality of through grooves passing through the first surface and the second surface, and the plurality of through grooves are respectively configured to accommodate the tabs of the plurality of electrode assemblies.

公开(公告)号：US11424500B2

公开(公告)日：2022-08-23

申请号：US17120593

申请日：2020-12-14

申请人： Contemporary Amperex Technology Co., Limited

发明人： Chengyou Xing ,  Chengdu Liang ,  Ningsheng Wu ,  Wenlong Kang ,  Peng Wang ,  Quankun Li ,  Lingyan Jiang

IPC分类号： H01M50/116

摘要： The present disclosure relates to a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes a casing and a top cover for connecting with the casing. The casing includes an end portion provided with an opening. The top cover is used to cover the opening of the casing. The top cover includes an inserting portion extending into the casing from the opening. A plurality of notches are provided on an inner side of the end portion of the casing or on a side wall of the inserting portion facing the casing. In the secondary battery, the battery module, and the device using the secondary battery as a power source according to the present disclosure, the secondary battery can reduce the possibility of short circuit occurring in the electrode assembly and improve the operational safety of the secondary battery.