Secondary battery with embossed safety vent
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United States of America Patent
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Jun 8, 2021
Grant Date -
Aug 1, 2019
app pub date -
Jul 18, 2017
filing date -
Sep 20, 2016
priority date (Note) -
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Abstract
Various embodiments of the present invention relate to a secondary battery. The technical problem to be solved is to provide a secondary battery having an embossed safety vent, which is not damaged by an external force generated during a manufacturing process, can clearly define a rupture area or shape, and makes process management for rupture area or shape easy. To this end, various embodiments of the present invention disclose a secondary battery comprising: a case, a cap plate which is installed in the case and has a vent hole; and a safety vent which is coupled to the vent hole of the cap plate and ruptures when the internal pressure of the case is greater than a reference pressure, wherein the safety vent comprises an embossed portion; and a notch portion formed in the embossed portion.
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