公开(公告)号：US20210135325A1

公开(公告)日：2021-05-06

申请号：US17145613

申请日：2021-01-11

申请人： Contemporary Amperex Technology Co., Limited

发明人： Zhoufu LI ,  Daichun TANG ,  Xigui LONG ,  Xiaoxi ZHANG ,  Baiqing LI ,  Lingyan JIANG

IPC分类号： H01M50/70 ,  H01M10/052 ,  H01M10/0585 ,  H01M50/533 ,  H01M50/147

摘要： A secondary battery, a battery pack, and an electric device. The secondary battery includes: a case with an inner cavity in which an electrolyte is included; a cap assembly covering an opening of the case; and an electrode assembly located in the inner cavity, the electrode assembly including an electrode unit and tabs, and along a length direction, the electrode unit including two side portions disposed oppositely, the tabs extending from the side portions; a connecting component configured to connect the tabs and the cap assembly; a flow guiding component located between a corresponding connecting component and a corresponding side portion, being connected to the connecting component and provided with an avoiding portion configured to avoid the tabs, and being in contact with the electrolyte, at least part of the flow guiding component being in contact with the corresponding side portion, and the flow guiding component.

公开(公告)号：US20240186646A1

公开(公告)日：2024-06-06

申请号：US18441390

申请日：2024-02-14

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Yanyu LIU ,  Yulian ZHENG ,  Xiaoxi ZHANG ,  Shoujun HUANG ,  Xinxiang CHEN ,  Peng WANG

IPC分类号： H01M50/342 ,  H01M50/147 ,  H01M50/186 ,  H01M50/367

CPC分类号： H01M50/3425 ,  H01M50/186 ,  H01M50/367 ,  H01M50/147 ,  H01M2220/20

摘要： A battery cell, a cover assembly, a battery, an electricity-consuming apparatus, a method and a device of manufacturing the battery cell are provided by the present application. The battery cell includes an electrode assembly; a casing accommodating the electrode assembly, in which the casing includes a wall portion, the wall portion includes a stepped hole, the stepped hole includes a first hole segment, a second hole segment and a first stepped face; a sealing member, in which a first sealing interface is formed between the sealing member and the first stepped face, the first sealing interface surrounds the first hole segment, and the sealing member includes a ventilating hole communicating with the first hole segment; a gas-ventilating film including a body and a convex portion, in which the body covers the ventilating hole, a second sealing interface is formed between the body and the sealing member.

公开(公告)号：US20240097272A1

公开(公告)日：2024-03-21

申请号：US18518611

申请日：2023-11-24

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Wanqiu MENG ,  Qian LIU ,  Yonghuang YE ,  Yulian ZHENG ,  Longfei XUE ,  Xiaoxi ZHANG

IPC分类号： H01M50/30

CPC分类号： H01M50/394

摘要： A gas-exhausting apparatus includes a gas-exhausting body and a gas-exhausting mechanism. The gas-exhausting mechanism includes a connecting assembly and a gas-ventilating member. The connecting assembly includes first and second connecting members. The first connecting member is provided with a first through hole for communicating with an inside of the battery cell. The second connecting member is provided with a second through hole for communicating with an outside of the battery cell. The first connecting member is configured to attach to a surface of the gas-ventilating member facing the inside of the battery cell. The second connecting member is configured to attach to a surface of the gas-ventilating member facing away from the inside of the battery cell. An orthographic projection of the first through hole on the gas-ventilating member and an orthographic projection of the second through hole on the gas-ventilating member are arranged to be staggered from each other.

公开(公告)号：US20240313337A1

公开(公告)日：2024-09-19

申请号：US18662093

申请日：2024-05-13

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

CPC分类号： H01M50/3425 ,  H01M50/107 ,  H01M50/152 ,  H01M50/55

摘要： 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.