POWER STORAGE ELEMENT, POWER SUPPLY MODULE, SUPPORT BODY, AND EXTERIOR PACKAGE OF POWER STORAGE ELEMENT

摘要

PROBLEM TO BE SOLVED: To suppress expansion of an electrode body in an exterior package of a power storage element and stably hold the electrode body against vibrations and impacts from outside.SOLUTION: A nonaqueous electrolyte secondary battery 1 includes: an electrode body 11; an exterior package constituted by a lid part 20 and a container body 10 that houses the electrode body 11; and a support body 13 that supports the electrode body 11 and is fixed to the inside of the exterior package by being fitted with a salient 20b1 of the lid part 20 as a part of an inner wall of the exterior package and a salient 10y1 of an inner bottom 10y of the container body 10.