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Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2004006408
Kind Code:
A
Abstract:

To provide a nonaqueous electrolyte secondary battery suitable in a case where a nonaqueous electrolyte is contained in an electrode group in solution or in a liquid state, with high cycle characteristics, and capable of making thin.

This nonaqueous electrolyte secondary battery is equipped with the electrode group 22 having the structure formed by flatly winding a positive electrode and a negative electrode through a separator, the nonaqueous electrolyte to be impregnated in the electrode group 22, and a film cladding material 21 in which the electrode group 22 is housed, and the electrode group 22 has a laminated structure whose exposed surface satisfies a formula: 0.9≤L2/L1≤1.2.


Inventors:
TAKAMI NORIO
HASEBE HIROYUKI
OSAKI TAKAHISA
KANDA MOTOI
Application Number:
JP2003282512A
Publication Date:
January 08, 2004
Filing Date:
July 30, 2003
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H01M2/02; H01M2/16; H01M4/13; H01M10/05; (IPC1-7): H01M10/40; H01M2/02; H01M2/16; H01M4/02; H01M4/58
Domestic Patent References:
JPH10172537A1998-06-26
JPH09500485A1997-01-14
JPS6341864U1988-03-18
JPH06231766A1994-08-19
JPH087919A1996-01-12
JPH10208773A1998-08-07
JPH08287954A1996-11-01
JPH10199572A1998-07-31
JP2000149997A2000-05-30
JP2000268872A2000-09-29
JPH06325747A1994-11-25
JP2000090975A2000-03-31
JPH08339818A1996-12-24
JPH11154513A1999-06-08
JP2000235868A2000-08-29
JPH0729563A1995-01-31
JPH06349473A1994-12-22
JPH06140077A1994-05-20
JPS61214365A1986-09-24
Foreign References:
WO1997008763A11997-03-06
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto



 
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