| 摘要 |
<p>A plurality of cells are connected into a cell set by a connecting plate (10). The connecting plate (10) has a welding bead portion (14) in the welding portion of its body. A part of the whole of the welding bead portion (14) forms a portion having a higher electric resistance than a base material of the connecting plate body. Thus, even when using a material having a small intrinsic resistance and a high conductivity such as copper, it is possible to assure sufficient welding intensity between the cell and the welding plate without excessively increasing the welding current.</p> |
