Patent ID: 8363420

Claim:
An electronic control apparatus comprising: a housing; a heat sink that is arranged in said housing; a power device that is mounted on said heat sink and has terminals which lead out in a lead-out direction; a circuit board that is arranged in opposition to said heat sink, and has an electronic circuit including a control circuit for controlling said power device; and conductive plates that electrically connect said circuit board and said power device to each other, and are arranged in the lead-out direction in which the terminals of said power device lead out, each of the conductive plates comprising: rolled surfaces which are disposed opposing one another and extend in the lead-out direction and toward the circuit board, at least one press-fit terminal which extends toward the circuit board, and an end face, which is orthogonal to the corresponding rolled surfaces and is parallel to the lead-out direction and faces a respective individual terminal of the power device between the corresponding rolled surfaces, and wherein the end faces of the conductive plates are bonded to the respective individual terminals of the power device, wherein said individual conductive plates include high current conductive plates through which a large current flows, and low current conductive plates through which a small current flows, and wherein positions of welding on said terminals for said high current conductive plates are arranged closer to said power device than the positions of welding on said terminals for said low current conductive plates.