Electric double-layer capacitor
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United States of America Patent
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Mar 28, 2006
Grant Date -
Jul 14, 2005
app pub date -
May 16, 2003
filing date -
May 17, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides an electric double-layer capacitor sealed up by a flexible casing material that ensures a release of pressure upon an increasing internal pressure. A pressure release valve (1) is attached to the flexible casing material. The pressure release valve (1) comprises a collar airtightly joined to the flexible casing material and a cylindrical portion (3) connected to the collar, extending out of a capacitor enclosure. The cylindrical portion (3) comprises an end part (5) having a self-closing passage (6) that is opening to the outside only upon a pressure release and is closed up in a normal state, and a channel (4) in communication with the interior of the capacitor enclosure.
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