| 摘要 |
[Problem] To provide a cell assembly and a rectangular secondary cell for use in a cell assembly, the assembly and the cell being capable of having all weld locations be fusion joints of the same type of metal, being capable of using a single shape of bus bar even if the bus bar has a positive-electrode terminal and a negative-electrode terminal of the same type of material, and not being liable to suffer a reduction in weld quality. [Solution] In this cell assembly (30), the regions of a positive-electrode external terminal (21) and a negative-electrode external terminal (22) that are connected to a positive-electrode terminal (11) and a negative-electrode terminal (12), respectively, are formed of the same type of metal as the positive-electrode terminal (11) and the negative-electrode terminal (12); the region connected to a bus bar (31) is formed of the same type of metal as the bus bar (31); the bus bar (31) is formed of the same type of metal as the positive-electrode terminal (11) or the negative-electrode terminal (12); and the positive-electrode terminal (11) and the positive-electrode external terminal (21), the negative-electrode terminal (12) and the negative-electrode external terminal (22), and the bus bar (31) and the positive-electrode external terminal (21) and the negative-electrode external terminal (22) are all, respectively, connected by welding. |
