SEALED BATTERY
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United States of America Patent
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N/A
Issued Date -
Dec 12, 2013
app pub date -
Nov 1, 2011
filing date -
Nov 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A sealed battery with a cleavage groove is provided. A cleavage groove (41) is provided on a flat section (13) of the battery case (2) to form a cleavage line intersecting a ridge line (L) formed on the flat section of the battery case when the battery case swells up due to an increase in internal pressure. The cleavage line is, as viewed in a side view, a curved line made up of a first curved segment (42) curved to protrude in one direction and a second curved segment (43) curved to protrude in a direction forming an angle of 90 degrees or larger with the direction in which the first curved segment protrudes, the first and second curved segments being connected with each other. At least one of the first curved segment and the second curved segment intersects the ridge line.
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