HERMETICALLY-SEALED BATTERY
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United States of America Patent
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Issued Date -
May 21, 2015
app pub date -
Nov 20, 2014
filing date -
Nov 20, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hermetically-sealed battery including a case body made of a metal, power generation elements housed in the case body, and a lid plate made of a metal. The case has an opening. The lid plate is fitted into the opening of the case body. The lid plate has a periphery laser-welded together with the case body to hermetically seal the opening of the case body with the lid plate. The lid plate includes a frame piece integrally provided along the periphery of the lid plate so as to be perpendicular to a plane surface of the lid plate. The frame piece is pressed into the opening along an inner wall surface. Laser welding is performed along a boundary between the frame piece and the inner wall surface that are in pressure contact with each other.
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