Mahle International Gmbh

Ambroz Vrtovec

Gregor Babic

Jurij Podrzaj

An electric power inverter for an electrical machine of an electrically powered drive system may include a capacitor board including a plurality of capacitors and at least one semiconductor board including a plurality of power semiconductors. The capacitor board and the at least one semiconductor board may be electrically interconnected and mutually stacked in a stacking direction, with a clearance, in a stack formation. The plurality of capacitors may be arranged on the capacitor board and fitted to a side thereof facing the at least one semiconductor board. At least one open location space may be defined between the plurality of capacitors and the capacitor board. The at least one open location space may be configured to accommodate the at least one semiconductor board. The at least one semiconductor board may be arranged within the at least one open location space with a clearance to the capacitor board.

Electric power inverter

An electric power inverter may include a capacitor board having a plurality of capacitors, and at least one semiconductor board each having a plurality of power semiconductors. The capacitor board and the at least one semiconductor board may be mutually stacked in a stacking direction, with a clearance, in a stack formation, and may be electrically interconnected. The capacitors may be arranged in the stacking direction, and fitted to a side facing the at least one semiconductor board. The capacitors may be arranged on the capacitor board to form at least one open location space between the capacitors, each positioned to accommodate one semiconductor board. Each semiconductor board may be arranged within the respective location space with a clearance to the capacitor board. At least some of the capacitors may be arranged in the middle of the capacitor board and each semiconductor board may be arranged on an edge of the capacitor board, so that current paths on the capacitor board may extend generally radially from the middle to the edge of the capacitor board.

An electric power inverter may include a capacitor board having a plurality of capacitors, and at least one semiconductor board having a plurality of power semiconductors. The capacitor board and the at least one semiconductor board may be mutually stacked in a stacking direction, with a clearance, in a stack formation, and may be electrically interconnected. The capacitors may be arranged in the stacking direction, and may be fitted to a side thereof facing the at least one semiconductor board. The capacitors may be arranged on the capacitor board to form at least one open location space between the capacitors, each location space positioned to accommodate a respective one of the at least one semiconductor board. The at least one semiconductor board may be arranged within the respective location space, with a clearance to the capacitor board. The power semiconductors may constitute a power circuit with at least one phase terminal, which, via a respective phase terminal stud, may extend to the capacitor board in the stacking direction and may be brought out to the exterior through the stack formation. The respective phase terminal stud may penetrate the stack formation through a respective phase terminal opening.

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