Method for manufacturing laminated bus bar, manufacturing apparatus for laminated bus bar, laminated bus bar

A manufacturing apparatus for a laminated bus bar, the manufacturing apparatus comprising:

• a first base member forming machine that forms a plurality of first through-holes in a serially arrayed manner at a constant pitch in a conductive flat plate-shaped first base member;
• a second base member forming machine that forms a conductive flat plate-shaped second base member;
• a laminating machine that forms a laminated body configured by laminating and fixing flat surfaces of the first base member and the second base member on and to each other;
• a punching machine that forms, in the second base member of the laminated body, second through-holes forming pairs with the first through-holes, the second through-holes being smaller than the first through-holes in portions overlapping with the first through-holes in a lamination direction of the first base member and the second base member, the second through-holes in combinations of the first through-holes and the second through-holes forming the pairs being formed in a serially arrayed manner at a constant pitch.

A laminated bus bar comprising:

• a conductive plate-shaped first base member that has a plurality of first through-holes serially arranged at a constant interval;
• and
• a conductive plate-shaped second base member that has a plurality of second through-holes serially arranged at a constant interval and is laminated on and fixed to the first base member, wherein
• the second through-holes are smaller than the first through-holes,
• combinations of one of the first through-holes and one of the second through-holes forming pairs are arranged such that the first through-hole and the second through-hole in each of the combinations face each other in a lamination direction of the first base member and the second base member,
• portions of the second base member that overlap with the first through-holes in the lamination direction in circumferential edges of the second through-holes in the second base member are formed as thin portions having small plate thicknesses in the first base member and the second base member in a laminated state, and
• bending portions that are elastically deformable along an array direction of the first through-holes are formed between the adjacent first through-holes.