Electrochemical cell having venting current collector and seal assembly
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United States of America Patent
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Oct 17, 2006
Grant Date -
Mar 10, 2005
app pub date -
Oct 21, 2004
filing date -
Dec 20, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes disposed in the can, and a collector and seal assembly disposed in the open top end of the can for closing the open top end of the can. The collector and seal assembly includes a current collector and an annular seal that move relative to each other from a sealed position to a vented position when the internal cell pressure reaches a pressure threshold to vent pressurized gases.
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