公开(公告)号：US11245145B2

公开(公告)日：2022-02-08

申请号：US17139845

申请日：2020-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Min Zhang ,  Shaojun Niu

IPC: H01M50/105 ,  H01M50/184 ,  H01M50/186 ,  H01M50/169

Abstract: Embodiments of the present application disclose a secondary battery including an electrode assembly, a packaging bag and an electrode lead. The packaging bag includes a first packaging film and a second packaging film, the electrode assembly is disposed between the first packaging film and the second packaging film. The first packaging film and the second packaging film each include a main body portion, two extending portions and two connecting portions, the main body portion is located on one side of the electrode assembly in a thickness direction, the two connecting portions are respectively located on two sides of the electrode assembly in a transverse direction, the two extending portions respectively extend from two ends of the main body portion in the transverse direction and are respectively connected to the two connecting portions. Each extending portion includes a first arc region, an inclined region and a second arc region.

公开(公告)号：US11848412B2

公开(公告)日：2023-12-19

申请号：US17043149

申请日：2020-04-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mianyu Xie ,  Min Zhang ,  Lei Chen ,  Xiao Chen

IPC: H01M50/178 ,  H01M50/184 ,  H01M50/105 ,  H01M50/124 ,  H01M50/133 ,  H01M50/55 ,  H01M10/0525 ,  H01M50/553 ,  H01M50/131 ,  H01M50/103 ,  H01M50/557

CPC classification number: H01M10/0525 ,  H01M50/178 ,  H01M50/184 ,  H01M50/103 ,  H01M50/105 ,  H01M50/124 ,  H01M50/131 ,  H01M50/133 ,  H01M50/55 ,  H01M50/553 ,  H01M50/557

Abstract: Provided is a secondary battery, including: an electrode assembly, a packing bag, an electrode lead and an insulation part; the electrode assembly is housed in the packing bag having a sealing part on edge, and the electrode lead is connected to the electrode assembly and passes through the sealing part. The sealing part includes a main body area, a first step area and a first transition area which are located on same side of the electrode lead along width direction, and the main body area, first transition area and first step area are successively arranged along direction approaching the electrode lead; the insulation part is wrapped around the electrode lead, and has a first portion which is located on a side of the electrode lead close to the main body area along width direction and covered by the first step area on both sides in thickness direction.