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Title:
HERMETIC BATTERY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2012/147782
Kind Code:
A1
Abstract:
[Problem] To provide a highly productive hermetic battery equipped with a sealing body with a safety valve excellent in conductivity. [Solution] A hermetic battery is hermetically sealed by swaging and fixing a sealing body to the opening portion of a cylindrical exterior can with a bottom. A method for manufacturing the hermetic battery is characterized by comprising: a preparation step of preparing a terminal cap and a safety valve, the terminal cap having an external terminal portion projecting toward the outside of the battery and a flange portion positioned in the periphery of the external terminal portion, the safety valve having a current-carrying contact portion projecting toward the inside of the battery and a peripheral portion positioned in the periphery of the current-carrying contact portion and provided with a bent portion formed by bending the outer circumferential edge toward the outside of the battery; a temporarily fixing step of overlapping the safety valve and the terminal cap and temporarily fixing the overlapped portion by using the bent portion; and a conductive bonding step of conductively bonding the bent portion and the peripheral portion.

Inventors:
YAMATO KENJI (JP)
YAMASHITA SYUICHI (JP)
YAMAGUCHI YUMA (JP)
Application Number:
JP2012/061073
Publication Date:
November 01, 2012
Filing Date:
April 25, 2012
Export Citation:
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Assignee:
SANYO ELECTRIC CO (JP)
YAMATO KENJI (JP)
YAMASHITA SYUICHI (JP)
YAMAGUCHI YUMA (JP)
International Classes:
H01M2/12; H01M2/02; H01M2/04; H01M2/26
Domestic Patent References:
WO2001059856A12001-08-16
Foreign References:
JP2001126695A2001-05-11
JP2010277784A2010-12-09
JPH08212994A1996-08-20
JP2009039720A2009-02-26
JP2010135320A2010-06-17
JPH04132158A1992-05-06
JP2001167740A2001-06-22
Attorney, Agent or Firm:
OHASHI MASAAKI (JP)
Masaaki Ohashi (JP)
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Claims:



 
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