Title: Enclosed-type battery manufacturing method and enclosed-type battery
Application Number: 200610163718 Application Date: 2006.12.04
Publication Number: 1979920 Publication Date: 2007.06.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01M2/00;H01M10/04
Applicant(s) Name: Sanyo Electric Co. Address:
Inventor(s) Name: Yoshida Satoshi
Attorney & Agent: lixiang lan
Abstract:
    The invention makes it possible to provide a method for manufacturing a sealed battery in which a weld formed by welding a sealing plate fitted into an opening of an outer can of a battery with a laser or other high energy rays has a large breaking strength, and a sealed battery manufactured thereby. A method for manufacturing a sealed battery according to one embodiment of this invention includes a first step of using an outer can 15 having an opening, and a sealing plate 16 having a flange provided with a groove 22 around or on a part of a fitting face of the sealing plate 16 with the outer can 15, and inserting the sealing plate 16 into the opening of the outer can 15 so that a top face of the outer can 15 is approximately flush with a top face of the flange of the sealing plate 16, and a second step of welding together the outer can 15 and the sealing plate 16 by radiating a high energy ray to the fitting portion therebetween.
Time: 6
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