초록 ▼

A drive device of a vehicle includes a motor generator, a lubricant circulating mechanism lubricating and cooling the motor generator, a power control unit controlling the motor generator, arranged on a circulation path of a lubricating oil and being in contact with the lubricating oil for transferr

A drive device of a vehicle includes a motor generator, a lubricant circulating mechanism lubricating and cooling the motor generator, a power control unit controlling the motor generator, arranged on a circulation path of a lubricating oil and being in contact with the lubricating oil for transferring and receiving a heat to and from the lubricating oil, and a casing accommodating the motor generator, the lubricating mechanism and the power control mechanism, and provided with the circulation path. Preferably, the power control unit includes a power control element and a board (120) having a first main surface on which the power control element is mounted. The board (120) is provided on its second main surface side with a radiator fin (390, 392 and 394) for contact with the lubricating oil in the circulation path.

대표청구항 ▼

The invention claimed is: 1. A drive device of a vehicle comprising:a first rotating electric machine;a circulating mechanism for lubricating oil lubricating and cooling said first rotating electric machine;a power control unit controlling said first rotating electric machine and cooled by heat exch

The invention claimed is: 1. A drive device of a vehicle comprising:a first rotating electric machine;a circulating mechanism for lubricating oil lubricating and cooling said first rotating electric machine;a power control unit controlling said first rotating electric machine and cooled by heat exchange with said lubricating oil; anda casing accommodating said first rotating electric machine, said circulating mechanism and said power control unit, and provided with a circulation path of said lubricating oil,wherein:said vehicle includes an internal combustion engine used together with said first rotating electric machine for rotating a wheel,said casing is in contact with said internal combustion engine in a thermally conductive fashion,a heat of said lubricating oil is transmitted to a housing of said internal combustion engine through said casing,said housing of said internal combustion engine is provided with a water passage circulating cooling water, andsaid casing has a radiator projection projected into said water passage.