Patent ID: 11967867
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  F | IPC B  H

Claim 20:
21. A rotating electric machine comprising:
a field element that includes a magnet portion that includes a plurality of magnetic poles of which polarities alternate in a circumferential direction;
an armature that includes an armature winding of multiple phases, either of the field element and the armature rotating together with a rotation shaft;
a power converter that is electrically connected to the armature winding, wherein a coolant flows into the rotating electric machine from a coolant recirculation system that includes a coolant recirculation path that recirculates the coolant and a heat releasing apparatus that is provided on the coolant recirculation path;
a plurality of electrical modules that configure the power converter and include a heat generating component that generates heat as a result of energization being housed in a housing case; and
a housing member that includes a cylindrical portion that is provided on a radially inner side of a magnetic circuit portion that includes the magnet portion and the armature winding, and to which the plurality of electrical modules are disposed, wherein:
the cylindrical portion is provided with a coolant passage through which a coolant flows from the coolant recirculation system;
the plurality of electrical modules are arranged in the housing member on a radially inner side of the cylindrical portion, in a circumferential direction along the cylindrical portion;
the plurality of electrical modules include a switch module that includes a semiconductor switching element that is the heat generating component and a capacitor module that includes a smoothing capacitor that is the heat generating component;
the coolant passage has an inlet portion into which the coolant flows from the coolant recirculation path and an outlet portion from which the coolant flows into the coolant recirculation path, and is provided in an annular shape along the cylindrical portion so as to connect the inlet portion and the outlet portion in the circumferential direction;
the cylindrical portion is provided with a protruding portion that protrudes on a radially inner side, and the inlet portion and the outlet portion are provided in the protruding portion;
as intervals between the electrical modules that are adjacent to each other in the circumferential direction, a first interval and a second interval that is wider than the first interval are provided; and
the protruding portion is provided in a portion in which the interval between the electrical modules that are adjacent to each other in the circumferential direction is the second interval.