JP2007236198A5 - - Google Patents

Claims (7)

A positive DC terminal and a negative DC terminal connected to the battery;
A heat sink having conductivity;
An insulating substrate disposed on the heat sink;
A substrate conductor pattern formed on the insulating substrate;
A semiconductor element formed on the insulating substrate and electrically connected to the substrate conductor pattern;
An output terminal connected to the rotating electrical machine,
A power conversion device in which one annular current path is formed between the positive DC terminal and the negative DC terminal. A positive DC terminal and a negative DC terminal connected to the battery;
A heat sink having conductivity;
An insulating substrate disposed on the heat sink;
A substrate conductor pattern formed on the insulating substrate;
A semiconductor element formed on the insulating substrate and electrically connected to the substrate conductor pattern;
An output terminal connected to the rotating electrical machine,
A first circuit is formed by the positive DC terminal, the semiconductor element, the output terminal, and the substrate conductor pattern that electrically connects them,
A second circuit is formed by the output terminal, the semiconductor element, the negative DC terminal, and the substrate conductor pattern that electrically connects them,
Between the positive DC terminal and the negative DC terminal, an annular current path is formed by the first circuit and the second circuit,
A power conversion device in which the annular current path is arranged at a position facing the heat sink with the insulating substrate interposed therebetween. The power conversion device according to claim 2,
An electric power conversion device in which an eddy current facing the annular current path is induced in the heat sink. The power conversion device according to claim 2,
An input terminal composed of the positive DC terminal and the negative DC terminal, and the output terminal are arranged to be diagonally positioned on the annular current path. An input terminal comprising a positive DC terminal and a negative DC terminal connected to the battery;
An output terminal connected to the rotating electrical machine;
An insulating substrate disposed on the heat sink;
A substrate conductor pattern formed on the insulating substrate;
A first semiconductor element electrically connected by the substrate conductor pattern between the positive DC terminal and the output terminal;
A second semiconductor element electrically connected by the substrate conductor pattern between the output terminal and the negative DC terminal;
Having a conductive heat sink,
In the input terminal, the first semiconductor element, the output terminal, and the second semiconductor element, the input terminal and the output terminal are diagonal to each other, and the first semiconductor element and the second semiconductor element Two semiconductor elements are provided to form a diagonal position different from the diagonal,
A current path formed by the input terminal, the first semiconductor element, the output terminal, and the second semiconductor element is disposed at a position facing the heat sink with the insulating substrate interposed therebetween. apparatus. The power conversion device according to claim 5,
In the input terminal, the first semiconductor element, the output terminal, and the second semiconductor element, the input terminal and the output terminal are diagonal to each other, and the first semiconductor element and the second semiconductor element The power converter device provided in the substantially square so that 2 semiconductor elements may make the diagonal position different from the said diagonal. The power conversion device according to claim 5,
An annular current path is formed by the input terminal, the first semiconductor element, the output terminal, and the second semiconductor element, and the current flowing through the annular current path is opposed to the current path of the heat sink. Power converter that induces eddy currents at the position.