Battery module including electrochemical cell with pressure relief feature
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United States of America Patent
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-
Jan 18, 2011
Grant Date -
Feb 12, 2009
app pub date -
Oct 15, 2008
filing date -
Apr 28, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A battery module includes at least one electrochemical cell. The electrochemical cell includes a first terminal conductively coupled to a first electrode and a body portion configured to function as a second terminal and conductively coupled to a second electrode via a pressure relief portion. The battery module further includes an end cap comprising a conductive portion and an insulating portion, the conductive portion being conductively coupled to the body portion. The pressure relief portion is configured to separate from the body portion to a deployed position when a pressure within the body portion reaches a first predetermined level, thereby substantially breaking the conductive coupling between the body portion and the second electrode. The insulating portion substantially prevents formation of a conductive coupling between the body portion and the second electrode when the pressure relief portion is in the deployed position.
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