| 摘要 |
PROBLEM TO BE SOLVED: To obtain a compact configuration in a battery unit including a battery and a substrate.SOLUTION: A battery unit (1) includes: a columnar battery (2); a substrate (3) which is disposed at the side of the battery (2) so that one surface thereof in the thickness direction faces at least a part of a side surface of the battery (2); and a holder (4) for holding the battery (2) and the substrate (3). The holder (4) has a curved part (4a) and a linear part (4b) for housing the battery (2), and an opening (4c) in which the substrate (3) is disposed so that one surface thereof is exposed. |
