POWER SUPPLY DEVICE AND MANUFACTURING METHOD THEREOF

摘要

Provided is a technology which can improve the welding properties while maintaining the connection strength of the crimp connection locations of the terminal units in a power supply device. The device comprises: a case (92) which internally houses a power generation element and has a hole member (93h) formed therein which links the exterior to the interior, an external electrode terminal (94) which is provided close to the hole member (93h) on the exterior of the case (92), and an internal terminal (9a) wherein one end thereof is electrically connected to a battery element (91) housed in the case (92) and the other end thereof, which projects through the hole member (93h) to the exterior of the case (92) and is crimped, fixes the external electrode terminal (94) to the case (92). The other end of the internal terminal (9a) which was crimped has a region that is thinner in the direction parallel to the center axis direction of the hole member (93h) than at a position in contact with the edge of the hole member (93h).