Electric energy storage device having improved terminal structure
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United States of America Patent
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Apr 16, 2019
Grant Date -
Dec 28, 2017
app pub date -
Sep 14, 2015
filing date -
Jan 14, 2015
priority date (Note) -
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Abstract
An electric energy storage device has an inner terminal disposed in a cylindrical metal case and connected to an electrode of a bare cell, wherein the inner terminal includes a plate-shaped terminal body having a circular outer circumference; at least one electrolyte impregnation hole formed through the terminal body in a thickness direction; a flange located at the outer circumference of the terminal body and extending perpendicular to a plane of the terminal body; and a spacer formed to protrude at a periphery of at least one impregnation hole among the impregnation holes or formed by protruding a part of the plane of the terminal body.
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