Title:
CYLINDRICAL SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3831595
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cylindrical secondary battery wherein there is no fear of damaging an electrode and a separator when a current collecting plate 5 is welded to an end face of the wound electrode body 4, a manufacturing process is simple, and a superior output characteristic is exerted in a tabless type cylindrical secondary battery in which a wound electrode body 4 is housed inside of a battery can.
SOLUTION: In the cylindrical secondary battery, a coating part A in which an active substance is coated and a non-coating part B in which the active substance is not coated are respectively formed at both electrodes of a positive electrode and a negative electrode 41, 43, the metal-made current collecting body 5 is covered on each of cylindrical projections 40 of the wound electrode body 4, and the current collecting body 5 is equipped with a ceiling plate part 51 contacted with the end face of the cylindrical projection 40 and a skirt part 52 contacted with an outer peripheral face of the cylindrical projection 40.
Inventors:
Nakano Noboru
Koichi Sato
Toshiyuki Nohma
Ikuro Yonezu
Koichi Sato
Toshiyuki Nohma
Ikuro Yonezu
Application Number:
JP2000292306A
Publication Date:
October 11, 2006
Filing Date:
September 26, 2000
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M2/26; H01M10/05; H01M10/0566; H01M10/0587; (IPC1-7): H01M2/26; H01M10/40
Domestic Patent References:
| JP2000243372A | ||||
| JP2001297745A | ||||
| JP11312532A |
Attorney, Agent or Firm:
Nobuyasu Nishioka