| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device in which positional deviation of each separator constituting an electrode assembly can be confirmed easily, and to provide a manufacturing method for electrode assembly.SOLUTION: A secondary battery includes an electrode assembly 14 constituted by laminating a plurality of rectangular positive electrode sheets 21 and a plurality of negative electrode sheets 22 while sandwiching a rectangular separator 23. The separators 23 have the same shape, and are laminated while being shifted by a length δx in the X direction orthogonal to the extension direction of one short side 23a. Consequently, each one short side 23a is visible in a state where the separators 23 are laminated. |
