ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE MODULE
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United States of America Patent
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Issued Date -
May 21, 2015
app pub date -
Nov 4, 2014
filing date -
Nov 15, 2013
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Abstract
An electric storage device includes an electrode assembly including a winding core and electrodes, and a case. The case and the winding core each have a rigidity satisfying 0.01≦P2/P1≦100, where P2/P1 is a ratio of a first pressure P1 applied to a first part as a specific part of the case by an indenter when the first part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrode assembly is not housed in the case, and a second pressure P2 applied to a second part as a part of the winding core facing the first part by the indenter when the second part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrodes are not wound.
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