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.