Patent ID: 11888376
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A rotary electric machine unit, comprising:
a rotary electric machine that has an annular stator, a rotor disposed on an inner side of the stator, and a housing accommodating the stator and the rotor therein; and
an electric power conversion device that converts an electric power to be supplied to the rotary electric machine from DC power to AC power, wherein
the housing includes:
a housing flow path that allows a refrigerant to flow therein and that extends along an outer peripheral surface of the stator so that a virtual plane perpendicular to a centerline of the rotor intersects both the housing flow path and a stator core of the stator, the outer peripheral surface of the stator being a radially outer surface of the stator and extending in a circumferential direction about the centerline of the rotor; and
a housing cooling part that defines the housing flow path and that cools the stator with the refrigerant flowing through the housing flow path,
the electric power conversion device includes a plurality of power modules that each include semiconductor devices constituting an upper arm circuit and a lower arm circuit, each of the semiconductor devices having one surface and a rear surface opposite to the one surface in a thickness direction, and
the plurality of power modules are attached to the housing individually from each other and are arranged in sequence in the circumferential direction along the housing flow path such that the housing flow path exists on both the one surface and the rear surface of each semiconductor device and each semiconductor device is cooled with the refrigerant flowing in the housing flow path.