Accumulator device
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United States of America Patent
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Nov 15, 2016
Grant Date -
Jan 17, 2013
app pub date -
Feb 24, 2011
filing date -
Mar 31, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An accumulator device includes: an outer container with mutually overlapped outer films bonded air-tightly to each other at a bonding portion formed along respective outer peripheral edge portions; an electrode unit accommodated inside the outer container and including positive and negative electrode sheets stacked one on another with a separator disposed therebetween, the positive and negative electrode sheets each including a current collector on which an electrode layer is formed; positive and negative electrode terminals provided to protrude from inside the outer container to outside through the bonding portion; and an electrolytic solution injected in the outer container. The positive electrode terminal includes an aluminum terminal substrate and a nickel-plating coating formed on a surface of an outer end portion of the terminal substrate located outside the outer container; an inner edge of the nickel-plating coating is located within the bonding portion.
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