POWER SUPPLY DEVICE

摘要

In order to provide a technology of enhancing the strength of a power supply device against vibration, the power supply device according to an aspect of the present invention includes a plurality of battery cells, and a casing (30) including a pair of case bodies (31) which are arranged on a mount surface adjacent to each other. The pair of case bodies (31) are coupled together to form a housing space to house the plurality of battery cells between the pair of case bodies (31). Each case body (31) includes a fastening part (38) for fastening to the mount surface.