Method of manufacturing sealed battery and sealed battery

Details Method of manufacturing sealed battery and sealed battery Method of manufacturing sealed battery and sealed battery

2005-01-18

2005-01-18

Alejandro, Raymond (Department: 1745)

Metal working

Method of mechanical manufacture

Electrical device making

C029S623100, C029S428000

Reexamination Certificate

active

06843811

ABSTRACT:
A method of manufacturing a sealed battery that is able to keep productivity as high as possible while suppressing cracking incident to welding using an energy beam, such as a laser beam. A material such as an aluminum alloy is used for the external casing and the cover plate. The cover plate bas a rib, which is formed on the outer edge of the cover plate, and a flat part. The external casing rim and the outer edge of the cover plate are welded together, the thickness of the external casing at the rim is made small. A closure cap is fit into the external casing. The closure cap and external casing are welded together and the molten part is gradually cooled.

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