Title:
薄型電池
Document Type and Number:
Japanese Patent JP4026787
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make the sealing perfect and facilitate the mounting by packaging a battery element consisting of a positive electrode and negative electrode layered through a solid electrolyte and contained in a facing with a synthetic resin film. SOLUTION: It is preferred to perfectly package at least four surfaces of a battery element excluding the surface where a terminal part is present with a synthetic resin film, so that the contamination of a sealed part by an electrolyte and the slippage of the battery element in use can be efficiently prevented, and the battery can be smoothly inserted to a bag-like facing material. It is preferred to set the thickness of the battery element to 0.3-30 mm and the thickness of the synthetic resin film to 2-100 μm from the viewpoint of ensuring of energy density and strength. In order to attain the perfect packaging and ensure the energy density, the length of the synthetic resin film is preferably set, according to its thickness, to a prescribed times the peripheral length of the battery element. As the synthetic resin film, polyethylene, polypropylene, fluorine resin, polyester or polyimide is preferably used, so that the swelling rate to the solid electrolyte is 20% or less.
Inventors:
Toshiyuki Kahata
Ikuo Kato
Masahiro Taniuchi
Toshishige Fujii
Ikuo Kato
Masahiro Taniuchi
Toshishige Fujii
Application Number:
JP8503198A
Publication Date:
December 26, 2007
Filing Date:
March 16, 1998
Export Citation:
Assignee:
株式会社リコー
International Classes:
H01M2/02; H01M2/08; H01M10/05; H01M10/0562; H01M10/0565; H01M10/058; H01M10/0585
Domestic Patent References:
| JP4106865A | ||||
| JP63205046A | ||||
| JP11120967A |
Attorney, Agent or Firm:
Eiji Tomomatsu
Toshikazu Kawashima
Toshikazu Kawashima