Title:
LITHIUM ION POLYMER SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP3680809
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent peeling of a current collector foil and an active material layer, and to suppress battery capacity decrease.
SOLUTION: A negative sheet 1 constructed by forming a negative active material layer 15 on the surface of a band-shaped negative current collector foil 14 is folded back two or more times in zigzag, one side end 11a of the negative sheet being connected to a negative terminal 16. A positive sheet 13 constructed by forming a positive active material layer 18 on the surface of a positive current collector foil 17 has an area corresponding to the area formed by folding the negative sheet, the positive sheet being interposed in the folded negative sheet via a polymer electrolyte layer and one side end 13a of the positive sheet being connected to a positive terminal 19. The polymer electrolyte layer comprises: a positive electrode side first electrolyte layer 12a formed on the surface of the positive sheet; a positive electrode side second electrolyte layer 12b continuously formed to the positive electrode side first electrolyte layer, on the other side end 13b of the positive sheet; and a positive electrode side third electrolyte layer 12c continuously formed to the positive electrode side second electrolyte layer, on the back face of the positive sheet.
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Inventors:
Yusuke Watanabe
Akio Mizuguchi
Akihiro Higami
Zhang Mamoru
Akio Mizuguchi
Akihiro Higami
Zhang Mamoru
Application Number:
JP2002094069A
Publication Date:
August 10, 2005
Filing Date:
March 29, 2002
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
H01M10/05; H01M4/13; H01M4/139; H01M10/0525; H01M10/0565; H01M10/0583; (IPC1-7): H01M10/40; H01M4/02
Domestic Patent References:
| JP2001028273A | ||||
| JP6243852A | ||||
| JP11121016A | ||||
| JP2003109666A | ||||
| JP2001266943A | ||||
| JP2001015171A |
Attorney, Agent or Firm:
Masayoshi Suda
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