Explosion-proof device including battery cover with rupture film positioned in valve seat for use in power batteries
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United States of America Patent
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May 14, 2013
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app pub date -
Jan 18, 2011
filing date -
Jul 15, 2010
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Abstract
An explosion-proof device for use in power batteries includes a battery cover defining an explosion-proof hole, a valve seat securely mounted in the explosion-proof hole and hermetically sealing the battery cover, and a rupture film positioned in the valve seat and hermetically sealing the explosion-proof hole. The rupture film is insulatively isolated from the valve seat via an insulative cushion enclosing the rupture film, or an insulative layer formed on the rupture film. In the explosion-proof device of the prevent invention, the rupture film is insulatively isolated from the valve seat, which can prevent the rupture film from being electrochemically corroded.
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