| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device which is improved in strength of an exterior member with respect to gas or the like generated during abnormality of a power storage element.SOLUTION: Disclosed is a power storage device 1 in which a power storage element 2 housed in a space formed by a recess 7 between two folded rectangle exterior members 3 is sealed by joining exterior members 3 to each other at joint parts 5a-5d located in the outer periphery of two folded exterior members 3 and provided on the outer side of the recess 7. In the power storage device, non-joint parts 6, 6a, 6b are provided preventing the exterior members 3 from being joined to each other between a fold back part 4 obtained by folding the exterior member 3 into two and a joint part 5a of a side having the fold back part 4.SELECTED DRAWING: Figure 2 |
