| 摘要 |
A power supply unit 1 includes: a plurality of batteries 4 each of which has a positive electrode 8 at one end and a negative electrode 7 at the other end; and a bus bar module 3 connecting the batteries in series. The bus bar module 3 includes: a plurality of bus bars 9 each having a pair of connecting parts 91, 92 respectively connected to the electrodes 7, 8 adjacent to each other of the batteries 4 adjacent to each other, and a coupling part 90 coupling the pair of connecting parts 91, 92 to each other; a plurality of terminals 16, 17 each clamping the electrodes 7, 8 and the connecting parts 91, 92 to electrically connecting the electrodes 7, 8 to the connecting parts 91, 92; and a plate 10 to which the bus bars 9 and the terminals 16, 17 are attached. The electrodes 7, 8 are formed in a flat plate shape, and thickness directions of the electrodes 7, 8 which are connected to each other by the bus bar 9 are perpendicular to each other.
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