Safety venting mechanism with tearing tooth structure for batteries
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United States of America Patent
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Sep 4, 2012
Grant Date -
Sep 30, 2010
app pub date -
Dec 1, 2009
filing date -
Jan 12, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A battery comprises a battery cell having two voltage terminals and a flexible sidewall; a wall structure against which the battery cell is located, the wall structure including a sidewall that is adjacent to the sidewall of the battery cell; and a tooth structure that extends away from the sidewall of the wall structure and towards the sidewall of the battery cell, wherein the tooth structure includes a distal end sufficiently sharp to puncture the flexible sidewall of the battery cell when the flexible sidewall of the battery cell is forced up against the tooth structure due to a build up of excess pressure inside the battery cell.
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