Power supply device outer can, power device outer cover, and power supply device using the outer can or outer cover

摘要

Provided are a power supply device outer can, a power supply device outer cover, and a power supply device that can increase the battery capacity by reducing the protruding volume of the terminal metal plate or electrode metal plate to the outside as much as possible. The outer can 1 for a power supply device according to the present invention has a substantially thin rectangular parallelepiped shape having an opening 4 on one end side and formed with an internal cavity 3 capable of accommodating an electricity supply source for supplying electricity. And at least one of the wall surfaces constituting the outer can is provided with a recess 2 that can be attached in a state in which the energization terminal and / or the electrode is at least partially accommodated, and the wall thickness of the recess is equal to that of the recess. It is thinner than the surrounding area. The power supply apparatus of the present invention is such that an electric supply source is accommodated in the internal cavity of the outer can having such a structure. In the present invention, the recess 2 is also provided in an exterior lid that seals the opening of the exterior can.