Current interruption device and electrical energy storage device using the same
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United States of America Patent
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Feb 20, 2018
Grant Date -
May 11, 2017
app pub date -
Feb 16, 2015
filing date -
Mar 28, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A current interruption device includes a first conductive member, a second conductive member, a first deformable member, and a second deformable member. The first conductive member is fixed to a casing. The second conductive member is disposed at a position opposed to the first conductive member. The first deformable member is in contact with the second conductive member when pressure in the casing is equal to or less than a predetermined value. Further, the first deformable member is brought out of contact with the second conductive member when the pressure in the casing exceeds the predetermined value. A plastic deformation portion deformed in a manner of projecting toward the second conductive member is provided on a center portion of the second deformable member.
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