| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device with flexibility, or a power storage device hard to worsen its capacity even when being bent.SOLUTION: A power storage device is provided, which comprises: a wound body; and an electrolyte. The wound body includes a laminate, and the laminate has positive and negative electrodes superposed on each other. Supposing that the thickness of the laminate is T, and the width of a part of the wound body, the number of turns of which is given by n=k (k is a natural number), is W, the following expression holds: W>W+2T. Alternatively, the power storage device is provided, which is arranged as follows: the wound body has first and second parts; a part of the wound body, the number of turns of which is given by n=k, includes the first part, whereas a part of the wound body, the number of turns of which is given by n=k+1, includes the second part; the first part overlaps with the second part; when it is supposed that the distance between first and second parts is G, the following relation holds: G>T.SELECTED DRAWING: Figure 1 |
