| CPC H02K 11/30 (2016.01) [H02K 5/203 (2021.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01)] | 15 Claims |
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1. A power generation module comprising:
an electric motor that includes a motor housing defining an outer periphery of the electric motor;
an inverter that is disposed at a first side of the motor housing and that includes an inverter housing configured to accommodate an insulated gate bipolar transistor (IGBT) and a capacitor;
an inner housing that is disposed inside the motor housing and that is configured to accommodate a stator and a rotor; and
a dual flow path disposed at a circumferential surface of the motor housing on which the inner housing is disposed,
wherein the dual flow path comprises:
a plurality of first cooling flow paths spaced apart from each other in a longitudinal direction of the inner housing and through which a first fluid flows,
a second cooling flow path defined between the plurality of first cooling flow paths and through which a second fluid flows, and
a plurality of injection nozzles that are disposed at each of the plurality of first cooling flow paths, that are spaced apart from each other, and that are configured to spray the first fluid to an inner space of the inner housing,
wherein the plurality of first cooling flow paths include a plurality of oil channels extending in a circumferential direction of the inner housing,
wherein the second cooling flow path comprises:
a plurality of first water channels disposed at a front portion of the inner housing in the longitudinal direction and extending along the circumferential direction of the inner housing,
a plurality of second water channels disposed at a rear portion of the inner housing in the longitudinal direction and extending along the circumferential direction of the inner housing, and
a water channel connecting part extending from a first side of the plurality of first water channels toward the plurality of second water channels in the longitudinal and circumferential directions of the inner housing and provide fluid communication between the plurality of first water channels and the plurality of second water channels, and wherein the inner housing comprises:
a plurality of first flow path forming protrusions that extend in the circumferential direction of the inner housing and that define the plurality of first water channels,
a plurality of second flow path forming protrusions that extend in the circumferential direction of the inner housing and that define the plurality of second water channels,
an intermediate partition wall that extends in the circumferential direction of the inner housing, that protrudes a radial direction of the inner housing, that contacts the motor housing, and that partitions the plurality of first water channels and the plurality of second water channels from each other,
a flow path forming protrusion connecting portion that extends in the circumferential and longitudinal directions of the inner housing and that connects the plurality of first water channels to the plurality of second water channels, and
an intermediate partition wall connecting portion that extends from a flow path forming protrusion providing a boundary between one of the plurality of oil channels and the first water channels toward one side of the intermediate partition wall in the circumferential and longitudinal directions or that extend from another side of the intermediate partition wall toward a flow path forming protrusion providing a boundary between another one of the plurality of oil channels and the second water channels in the circumferential and longitudinal directions.
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