| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device of high productivity in which occurrence of defect is suppressed while ensuring energy density, and to provide a power storage device mounting vehicle.SOLUTION: The power storage device includes an electrode body, and a case for housing the electrode body. The electrode body is formed by laminating a sheet-like separator, and a positive electrode sheet and a negative electrode sheet formed to face each other with the separator interposed between. On the cross section in a direction perpendicular to the lamination direction, the case has a plurality of corners of inner wall, and the corner of the negative electrode sheet is located at at least one corner of the inner wall of the case. When the radius of curvature at a corner of the inner wall of the case where the corner of the negative electrode sheet is located is R, the radius of curvature at a corner of the negative electrode sheet located at a corner of the inner wall of the case is r1, and the clearance of the straight part of the negative electrode sheet around a corner of the inner wall of the case and the straight part of the inner wall of the case is (a), following formula (1) is satisfied. 0.9(r1+a)≤R≤1.1(r1+a)...(1). |
