| 摘要 |
A thin battery includes a battery module (2) and an outer case (1) for housing the battery module (2), wherein a first case body (1A) and a second case body (1B) include connection walls (8), (18) for connecting the first case body (1A) and the second case body (1B) to each other on outer circumferential portions, at least one of the first case body (1A) and the second case body (1B) includes a dish-shaped case element (5) with a housing portion (7) swelling from one surface and a reinforcing frame (6) fixed to the case element (5) along a circumference of a swelling wall (11) of the housing portion (7), and the battery module (2) is housed in the housing portion (7), whereby a light-weight and small thin battery can be provided, which has sufficient structural strength while the total thickness of the battery is minimized. |
