| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable and flexible power storage device in which heating is suppressed by preventing a solid-state battery, mounted on a flexible board, from dropping, in a power storage device excellent in safety and mounting an all-solid-state secondary battery on a flexible board.SOLUTION: A power storage device includes a solid-state battery group arranged on the principal surface of a flexible substrate, and a solid-state battery group arranged on the back surface of a flexible substrate opposite from the principal surface, where the mounting region of the solid-state battery group arranged on the back surface is smaller than the mounting region of the solid-state battery group arranged on the principal surface. The mounting region of the solid-state battery group on the back surface is located on the inside of the mounting region of the solid-state battery group arranged on the principal surface, when projected from the back surface side. Since the solid-state battery is not arranged on the outside where the curvature increases, local concentration of stress can be avoided, and since the mounting density decreases toward the outside and excellent heat dissipation is ensured, dropping of the solid-state battery is prevented, and a power storage device excellent in heat dissipation can be obtained. |
