Title:
渦巻電極を備えた電池及びその製造法
Document Type and Number:
Japanese Patent JP4284719
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance mass-productivity, battery characteristics, and safety without generation of a spark in a production process by inclining and focusing a current collector exposed part of an electrode on one side in which a positive or negative active material is filled of a spiral electrode by a swelled-out part and a spacer made of an insulator, and performing strong pressure-contact against a projection formed in a dish plate. SOLUTION: An opening 1a of a battery container 1 is crimp-sealed with a sealing member B by bending inward the opening 1a through an insulating gasket 11, and a swelled-out part 1b projecting in the center axis direction is formed directly under the battery container 1 of the crimp-sealed part so that the width of a horizontal part for supporting the insulating gasket 11 becomes about 0.7 mm. A current collector exposed part 2a of a positive active material sheet of a spiral electrode is inclined and focused in the inner diameter direction by a swelled-out part 1b and a spacer 12 made of insulating synthetic resin, and strong pressure-contact is performed against a projection 9b formed in a dish plate 9.
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Inventors:
Takeshi Inui
Fumio Oho
Toshiya Kuwamura
Fumio Oho
Toshiya Kuwamura
Application Number:
JP24678998A
Publication Date:
June 24, 2009
Filing Date:
September 01, 1998
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H01M4/02; H01M6/02; H01M10/04; H01M50/528
Domestic Patent References:
| JP10188933A | ||||
| JP2288158A | ||||
| JP2078151A | ||||
| JP7094161A | ||||
| JP4296444A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano