Vehicle circuit element (200), comprising: a bent portion (602) formed by bending a plurality of conductive plates (621-625) having a convex shape to one side of a lamination direction in which the plurality of conductive plates (621-625) are laminated, wherein the plurality of conductive plates (621-625) are laminated such that adjacent conductive plates (621-625) are spaced apart from each other, and a rigid portion (601, 603) in which the plurality of conducting plates (621-625) extending from the bent portion (602) are connected to each other to form a single layer, wherein the bent portion (602) is arranged at a position facing an inner corner (Q1, Q2) or an outer corner (P1, P2) of a concave-convex shape formed on a bottom plate (1), characterized in that in the bent portion (602), a distance (E1-E4) between the adjacent conductive plates (621-625) is increased, while a distance width (F1-F5) between two slopes of the conductive plates (621-625) is increased toward one side of the lamination direction, the slopes forming the convex shapes of the conductive plates (621-625) and being opposite to each other.