| 摘要 |
A fuel-cell stack includes a laminate having a plurality of unit cells laminated and accommodated in a box-like casing. The casing includes pairs of side plates arranged at the sides of the laminate and formed of a metal plate having a first thickness, and a plurality of hinge plates spot-welded to both ends of the side plates and formed of a metal plate having a second thickness greater than the first thickness. Of spot-welding electrodes, the spot-welding electrode has an end face formed with a concave. With the spot-welding electrode being arranged on the side of the hinge plate and with the hinge plate and the side plate being in press contact by the spot-welding electrodes, energization is carried out for welding. |
