Abstract: A bus bar module includes a holding member for holding the plural bus bars with a mutual distance between the bus bars maintained. The holding member includes a first holding member for holding the plural bus bars in one electrode line of the plural battery cells, a second holding member for holding the plural bus bars in the other electrode line of the plural battery cells, and a joining member for structurally joining the first holding member to the second holding member. The joining member is formed in an arch shape upwardly projected from inside ends of the first holding member and the second holding member. The joining member has a rigid part adapted to maintain the arch shape and a flexible part adapted to vertically bend by a load from above.

Abstract: A bus bar module includes a holding member for holding the plural bus bars with a mutual distance between the bus bars maintained. The holding member includes a first holding member for holding the plural bus bars in one electrode line of the plural battery cells, a second holding member for holding the plural bus bars in the other electrode line of the plural battery cells, and a joining member for structurally joining the first holding member to the second holding member. The joining member is formed in an arch shape upwardly projected from inside ends of the first holding member and the second holding member. The joining member has a rigid part adapted to maintain the arch shape and a flexible part adapted to vertically bend by a load from above.

Abstract: Abnormal noise at a battery pack busbar module is prevented. A battery pack busbar module includes busbar accommodating portions each accommodate busbars which connect in series batteries, cover portions coupled by hinges to one of side edges of openings in the busbar accommodating portions to cover the openings, and lock portions to lock the cover portions by bringing first engagement portions provided on the other side edges of the busbar accommodating portions and second engagement portions provided on the cover portions into engagement with each other, and ribs projecting from the cover portions to come into abutment with the busbar accommodating portions are formed in positions spaced away from the lock portions, a height of the ribs being set such that the second engagement portions are not brought into engagement with the first engagement portions when the ribs abut the busbar accommodating portions.

Abstract: Attaching work of a high-voltage cable is improved. In an electric cable connecting construction of battery packs, the high-voltage cable is connected to conductors held in resin busbar modules for connection with the general electrodes by fastening crimp terminals to the conductors. Two ribs are formed on each of the busbar modules where the crimp terminal is held therebetween to limit an entrained rotation of the crimp terminal. A difference between a gap of the two ribs on one of the adjacent battery packs and a width of the crimp terminal connected to the general electrode is set to a first gap dimension L3 and A difference between a gap and a width of the crimp terminal connected to the general electrode of the other of the adjacent battery packs is set to a second gap dimension L6 larger than the first gap dimension.