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

Claim 13:
14. 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 extends along an outer peripheral surface of the stator and allows a refrigerant to flow therein, the outer peripheral surface of the stator being a radially outer surface of the stator and extending in a circumferential direction about a 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 have semiconductor devices constituting an upper arm circuit and a lower arm circuit and that are attached to the housing individually from each other radially outside of the stator and in sequence in the circumferential direction along the housing flow path, each power module being oriented such that one surface of each semiconductor device is adjacent to the housing; and
a module cooling unit that includes a module flow path that (i) is in communication with the housing flow path, (ii) extends along a rear surface of each semiconductor device opposite to the one surface, and (iii) cools the semiconductor devices with the refrigerant flowing in the module flow path.