Title:
リチウムイオン二次電池の製造法
Document Type and Number:
Japanese Patent JP4207439
Kind Code:
B2
Abstract:
By using a winding type electrode plate assembly resistant to displacement by wind-up and buckling, a lithium ion secondary battery, capable of suppressing deterioration in cycle and storage characteristic caused by expansion and shrinkage of the electrode plate due to charge/discharge cycles or by generation of gas during storage at high temperatures or the like, is accomplished. An electrode plate A comprising a binder mainly composed of a polymer material "a" and an electrode plate B, having the opposite polarity to the electrode plate A, with a porous polymer layer mainly composed of the polymer material "a" or a copolymer of the polymer material "a" formed thereon, are wound up in flat form to give a flat electrode plate assembly, which is soaked in a non-aqueous electrolyte and then heated and cooled, with the soaked state maintained, while pressure is applied in the direction of the thickness of the flat electrode plate assembly, to integrate the electrode plate assembly.
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Inventors:
Akiko Fujino
Shinji Nakanishi
Koshina Hide
Shinji Nakanishi
Koshina Hide
Application Number:
JP2002061445A
Publication Date:
January 14, 2009
Filing Date:
March 07, 2002
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H01M10/04; H01M4/13; H01M4/139; H01M4/62; H01M6/00; H01M10/05; H01M10/0525; H01M10/0565; H01M10/0566; H01M10/058; H01M10/0587; H01M4/66
Domestic Patent References:
| JP10302827A | ||||
| JP10255849A | ||||
| JP2001319693A | ||||
| JP2001085000A | ||||
| JP2001102091A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano