BATTERY CASE LID AND MANUFACTURING METHOD FOR BATTERY CASE LID

Title:

BATTERY CASE LID AND MANUFACTURING METHOD FOR BATTERY CASE LID

Document Type and Number:

WIPO Patent Application WO/2012/049907

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a battery case lid which suppresses work hardening of a metal plate to be formed and can be easily manufactured, and a manufacturing method for the battery case lid. A battery case lid (1) formed by processing a metal plate is characterized by comprising a substrate part (2), and an explosion-proof valve (4) provided in the substrate part (2), the explosion-proof valve (4) having a thin plate part (41) thinner than the substrate part (2), and the thin plate part (41) being formed by rolling the metal plate while the metal plate is not restrained.

Inventors:

SODE TAKAYUKI (JP)
SUGIYAMA YUKINORI (JP)
NOMURA SHINICHI (JP)
KOBAYASHI MASATO (JP)

Application Number:

PCT/JP2011/068827

Publication Date:

April 19, 2012

Filing Date:

August 22, 2011

Export Citation:

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Assignee:

SOODE NAGANO CO LTD (JP)
NIPPON LIGHT METAL CO (JP)
SODE TAKAYUKI (JP)
SUGIYAMA YUKINORI (JP)
NOMURA SHINICHI (JP)
KOBAYASHI MASATO (JP)

International Classes:

H01M2/12; B21D22/02; B21D51/44; B21J5/06; H01M2/04

Foreign References:

JP3222418B2	2001-10-29
JP2001137961A	2001-05-22
JPH10156481A	1998-06-16
JP2004178820A	2004-06-24
JPH11204093A	1999-07-30
JP2006272458A	2006-10-12
JPH1029031A	1998-02-03
JP2011154957A	2011-08-11
JPH09316580A	1997-12-09
JP3222418B2	2001-10-29

Other References: