Title:
筒形リチウム電池およびその製造方法
Document Type and Number:
Japanese Patent JP3996973
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cylindrical lithium battery and its manufacturing method, which is excellent in handling, can be manufactured easily, and can prevent yield decrease caused by spot welding. SOLUTION: This battery consists of a positive electrode 2 arranged on inner periphery of an positive electrode can 1, a bottomed cylindrical separator 3 arranged on inner periphery of the positive electrode 2, and a cylindrical lithium negative electrode 4 arranged inside the separator 3 and installing a current collector 10 inside thereof. The current collector 10 consists of a cylindrical part 12 forcedly inserted to inside the negative electrode 4 and a disk-shaped flat plate part 14 integrated with an upper outside of the cylindrical part 12. A sealing plate 6 and a negative electrode terminal plate 7 are arranged on an upper surface of the flat plate part 14. The outer peripheral edge parts of the flat plate part 14, the sealing plate 6, and the negative electrode terminal plate 7 are put on a ring-shaped gasket 8, and while holding these, the opening edge of the positive electrode can 1 is bent toward the inside and crimped to seal the inside of the battery. A thin part is formed in the sealing plate 6 so as to work as a safety valve.
Inventors:
Yasuhiro Ishiguro
Chihiro Murata
Akihide Izumi
Hiroyuki Nakata
Chihiro Murata
Akihide Izumi
Hiroyuki Nakata
Application Number:
JP12756497A
Publication Date:
October 24, 2007
Filing Date:
May 16, 1997
Export Citation:
Assignee:
FDK Corporation
International Classes:
H01M4/74; H01M6/02; H01M10/04
Domestic Patent References:
| JP8315834A | ||||
| JP62202461A | ||||
| JP61083259U | ||||
| JP63120354U |
Attorney, Agent or Firm:
Kensuke Isshiki
Noritaka Harashima
Satoshi Suzuki
Noritaka Harashima
Satoshi Suzuki