公开(公告)号：US20240297425A1

公开(公告)日：2024-09-05

申请号：US18659632

申请日：2024-05-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhitong SHANG ,  Congsheng CHEN ,  Mingxi YU ,  Yaoling WEN ,  Wenfa LIN

IPC: H01M50/636 ,  H01M50/15

CPC classification number: H01M50/636 ,  H01M50/15

Abstract: A battery end cover assembly includes an end cover having a liquid injection hole penetrating along a first direction. The liquid injection hole includes a first hole segment and a second hole segment divided along the first direction; the cross-sectional area of the first hole segment is larger than the cross-sectional area of the second hole segment; a stepped surface is formed between the first hole segment and the second hole segment; and the stepped surface includes a first inclined surface inclined toward the second hole segment along the first direction.

公开(公告)号：US20230261334A1

公开(公告)日：2023-08-17

申请号：US18189013

申请日：2023-03-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenfa LIN ,  Mingxi YU ,  Ning HUANG

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M10/0585 ,  H01M10/04

CPC classification number: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M10/0585 ,  H01M10/0404

Abstract: A battery cell includes an electrode assembly including a body and a tab, and a connecting part including a terminal connecting portion and a tab connecting portion. The terminal connecting portion is configured to connect an electrode terminal, the tab connecting portion is configured to connect the tab, and the tab connecting portion has a surface facing the body. The tab includes a first section connected to the body, a second section fixed on the surface of the tab connecting portion, and a corner section connected between the first section and the second section. The corner section exceeds the surface of the tab connecting portion in a direction from the body toward the connecting part.