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

Claim 0:
1. 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 electric power conversion device includes a plurality of power modules each having semiconductor devices constituting an upper arm circuit and a lower arm circuit and being attached to the housing individually from each other,
the housing includes:
a housing flow path through which a refrigerant flows, the housing flow path being located on a radially outer side 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;
a first cooling part that extends along an outer peripheral surface of the stator and cools the stator with the refrigerant flowing in the housing flow path, 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 second cooling part that cools the power modules with the refrigerant flowing in the housing flow path and that is disposed on a radially outer side of the housing flow path,

the plurality of power modules are disposed radially outside of the stator and are arranged along the second cooling part in sequence in the circumferential direction, and
the second cooling part is configured so that each power module is cooled from opposite sides with the refrigerant.