Patent ID: 8765289

Claim:
A power supply unit comprising: a plurality of batteries each of which has a positive electrode at one end and a negative electrode at the other end forming a battery electrode; and a bus bar module connecting the batteries in series, the bus bar module includes: a plurality of bus bars each having a pair of connecting parts respectively connected to the electrodes adjacent to each other of the batteries adjacent to each other, and each having a coupling part coupling the respective pair of connecting parts to each other, with the pair of connecting parts being perpendicular to the coupling part and a thickness direction of each member of the pair of the connecting parts being perpendicular to each other; a plurality of clamping members for elastically clamping both the battery electrodes and busbar connecting parts to electrically connect the battery electrodes to the busbar connecting parts; and a plate to which the plurality of bus bars and the plurality of clamping members are attached when the plurality of bus bars are inserted into the plurality of clamping members.