Patent ID: 8875825

Claim:
A power control unit that is configured to control a rotary electric machine that drives a vehicle, and to be mounted onto a motor case in which the rotary electric machine is housed, comprising: a fixed base that is made of resin; a cooler that is arranged on the fixed base and that includes a power module; a control substrate that is arranged on the cooler; a thin plate made of metal, the thin plate being configured to inhibit conduction of heat between the cooler and the fixed base; and a fixing member that fixes the cooler, the thin plate, and the fixed base together, the fixing member being provided with the fixed base; wherein the thin plate defines a space that is surrounded by the cooler and the thin plate, the thin plate being cooled by the cooler, and wherein the fixed base is configured to inhibit conduction of heat from the motor case to the power control unit.