| 摘要 |
PROBLEM TO BE SOLVED: To provide a power converter reducing inductance of a bus bar.SOLUTION: A power converter comprises: a lamination unit 20 alternately laminated with a plurality of power cards having positive electrode terminals P1 and negative electrode terminals N1 and a plurality of coolers; a P bus bar connecting the positive electrode terminals P1; and an N bus bar connecting the negative electrode terminals N1. In the lamination unit 20, the positive electrode terminals P1 of ones of the plurality of power cards and the negative electrode terminals N1 of the other ones of the power cards are alternately arranged side-by-side in a lamination direction. The P bus bar comprises: P bus bar main bodies 4a extending along rows of the positive electrode terminals P1 and the negative electrode terminals N1; P bus bar branch portions 4b branching off from the P bus bar main bodies 4a and extending among the positive electrode terminals P1 and the negative electrode terminals N1; and P bus bar leading end portions 4c extending from the P bus bar branch portions 4b and bonded to the positive electrode terminals P1. The N bus bar is similar to the P bus bar. Further, the P bus bar branch portions 4b and N bus bar branch portions 4b overlap with one another, while the P bus bar main bodies 4a and N bus bar main bodies 3a overlap with one another. |
