公开(公告)号：US20240120624A1

公开(公告)日：2024-04-11

申请号：US18528326

申请日：2023-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongsheng SUN ,  Qingkui CHI ,  Hui GU ,  Zhisheng CHAI ,  Guanghao ZHU

IPC: H01M50/536 ,  H01M10/04 ,  H01M50/107 ,  H01M50/152 ,  H01M50/538 ,  H01M50/548

CPC classification number: H01M50/536 ,  H01M10/0431 ,  H01M50/107 ,  H01M50/152 ,  H01M50/538 ,  H01M50/548

Abstract: This application provides a battery cell, a battery, and an electrical device, and relates to the technical field of batteries. The battery cell includes an electrode assembly. A plurality of weld portions are disposed on one side of a first electrode plate of the electrode assembly along a width direction. The plurality of weld portions are spaced apart along a length direction of the first electrode plate. The first electrode plate includes a winding start end and a winding termination end. The first electrode plate includes a body section from a first weld portion to a second weld portion. The body section is equally divided into a plurality of subsections, each subsection being L in length. A total length of the weld portions of each subsection is not less than 5%×L, where 200 mm≤L≤1200 mm.

公开(公告)号：US20230207954A1

公开(公告)日：2023-06-29

申请号：US18117117

申请日：2023-03-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongsheng SUN ,  Kun FANG ,  Hui GU ,  Qingkui CHI

IPC: H01M50/342 ,  H01M50/119

CPC classification number: H01M50/3425 ,  H01M50/119

Abstract: A battery cell, a battery, an electric device, and a manufacturing device and method of battery cell are described. The battery cell includes a metal housing, an electrode assembly, and a conductive member, where the metal housing has an accommodating cavity; the electrode assembly is accommodated in the accommodating cavity, the electrode assembly includes a first tab, and the first tab is electrically connected to the metal housing; and the conductive member is disposed on an outer surface of the metal housing, and resistance of the conductive member is lower than that of the metal housing. In the charging and discharging process, current passes through the conductive member or passes through both the conductive member and the metal housing, in whichever cases, the resistance in the charging and discharging process of the battery cell is lower than that in the case of current passing through the metal housing only.