公开(公告)号：US20240286185A1

公开(公告)日：2024-08-29

申请号：US18657805

申请日：2024-05-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Youcheng PAN ,  Liang JIANG ,  Hao MENG

IPC: B21D51/26 ,  H01M50/107 ,  H01M50/167

CPC classification number: B21D51/2638 ,  H01M50/107 ,  H01M50/167

Abstract: The present application provides a necking method, a necking apparatus, and a battery manufacturing device. The necking method is used for forming a necked portion on a shell with an open end. The necking method includes: forming an annular groove on the shell, where the annular groove extends in a circumferential direction of the shell; and expanding a width of the annular groove towards the open end to form the necked portion. The technical solution of the present application can effectively reduce deformation of the shell, ensure safety of an electrode assembly, and improve performance stability of a battery cell. Meanwhile, pre-necking the shell effectively reduce a risk of deformation resilience of the shell after the necked portion is formed, thereby improving machining precision and structural stability of the necked portion.

公开(公告)号：US20240261845A1

公开(公告)日：2024-08-08

申请号：US18639741

申请日：2024-04-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hao MENG ,  Youcheng PAN ,  Zhixin LUO ,  Yuqian WEN ,  Wenqi ZHU

IPC: B21D51/26 ,  H01M10/04

CPC classification number: B21D51/2638 ,  B21D51/263 ,  H01M10/0404

Abstract: A necking and flanging apparatus includes: an inner mold; a necking piece, disposed around the inner mold, where the necking piece is movable along a radial direction of the inner mold, and the necking piece is configured to coordinate with the inner mold to form a necked portion on a housing; and a press-fit piece, disposed around the inner mold, where the press-fit piece is movable along an axial direction of the inner mold, and the press-fit piece is configured to fit the necking piece to press and flatten the flanged portion of the housing.