An encasement of an electric machine of an electrified vehicle is provided. The encasement may include a base sidewall, an inner sidewall, and an outer sidewall. The inner sidewall may extend in a circular pattern about the base sidewall. The outer sidewall may extend from the base sidewall and may be spaced apart from the inner sidewall to define a coolant channel at least partially surrounding end windings of a stator of the electric machine. The base sidewall may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The base sidewall may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings.

Two or more switching devices (36) and two or more lead frames (41, 42, 43, and 44) are integrally molded by use of a molding resin (37) so that a power module (30) is formed; the power module (30) is made to adhere to a heat sink (32) via an insulating material (31); the power module (30) and the heat sink (32) are fixed to a housing (33) of the power module composite (23); the power module composite (23) is fixed to a case (6) of an electric rotating machine (1) via the housing (33).

Two or more switching devices (36) and two or more lead frames (41, 42, 43, and 44) are integrally molded by use of a molding resin (37) so that a power module (30) is formed; the power module (30) is made to adhere to a heat sink (32) via an insulating material (31); the power module (30) and the heat sink (32) are fixed to a housing (33) of the power module composite (23); the power module composite (23) is fixed to a case (6) of an electric rotating machine (1) via the housing (33).

An electric machine for an electrified vehicle is provided. The electric machine may include a stator, a ring plate, an encasement, and a fastener. The stator defines a cavity, a stator recess about a portion of the cavity, and a stator aperture. The stator may include windings disposed within and partially protruding out of the cavity. The ring plate may be sized for disposal within the stator recess, and may define a tab and a plate aperture for alignment with the stator aperture. The encasement may define a key sized for engagement with the tab to secure the encasement to the ring plate, and a closed coolant channel. The fastener may be sized for insertion within the apertures to secure the plate to the stator. The stator, ring plate, and encasement may be arranged with one another such that the partially protruding windings are disposed within the closed coolant channel.

An electric machine for an electrified vehicle is provided. The electric machine may include a stator, a ring plate, an encasement, and a fastener. The stator defines a cavity, a stator recess about a portion of the cavity, and a stator aperture. The stator may include windings disposed within and partially protruding out of the cavity. The ring plate may be sized for disposal within the stator recess, and may define a tab and a plate aperture for alignment with the stator aperture. The encasement may define a key sized for engagement with the tab to secure the encasement to the ring plate, and a closed coolant channel. The fastener may be sized for insertion within the apertures to secure the plate to the stator. The stator, ring plate, and encasement may be arranged with one another such that the partially protruding windings are disposed within the closed coolant channel.

An electric machine comprises a motor housing and an electronics enclosure coupled to the motor housing. The electronics enclosure defines an air passage between the electronics enclosure and the motor housing. The electronics enclosure further defines at least one air intake connected to said air passage. The electric machine also includes a fan configured to draw air through the at least one air intake and into the air passage.

A stator for an electric motor includes a substantially hollow-cylindrical stator stack provided with wire windings and an end winding, which adjoins the stator stack in the axial direction. The stator stack includes a number of slots, wherein a coolant line is inserted into the respective slot. To improve efficiency of the electric motor, a section of the respective coolant line extends into the region of the end winding.

A stator for an electric motor includes a substantially hollow-cylindrical stator stack provided with wire windings and an end winding, which adjoins the stator stack in the axial direction. The stator stack includes a number of slots, wherein a coolant line is inserted into the respective slot. To improve efficiency of the electric motor, a section of the respective coolant line extends into the region of the end winding.

A water-cooled housing (100) comprises: a tubular passage section (20) which has a plurality of partition walls erected in the direction of the central axis at a prescribed angular interval on a substantially cylindrical inner wall to form a plurality of outward passages and a plurality of inward passages extending parallel to each other along the central axis between the plurality of partition walls and the outer peripheral surface of a motor (40); a first cover section (10) which closes a first opening of the tubular passage section (20) while having a plurality of returning passages that connects inward passages to next outward passages; a second cover section (30) which closes a second opening of the tubular passage section (20) while having a plurality of returning passages that connects outward passages to next inward passages; a water supply section (16a) which is provided on the first cover section (10) and connected to the entrance of a first outward passage; and a water drain section (17a) which is connected to the outlet of the last inward passage of the first cover section (10) or is connected to the outlet of the last outward passage of the second cover section (30). With such a configuration, the present invention provides a water-cooled motor structure and a water-cooled housing which allow for easy production of components and increased cooling efficiency.

A water-cooled housing (100) comprises: a tubular passage section (20) which has a plurality of partition walls erected in the direction of the central axis at a prescribed angular interval on a substantially cylindrical inner wall to form a plurality of outward passages and a plurality of inward passages extending parallel to each other along the central axis between the plurality of partition walls and the outer peripheral surface of a motor (40); a first cover section (10) which closes a first opening of the tubular passage section (20) while having a plurality of returning passages that connects inward passages to next outward passages; a second cover section (30) which closes a second opening of the tubular passage section (20) while having a plurality of returning passages that connects outward passages to next inward passages; a water supply section (16a) which is provided on the first cover section (10) and connected to the entrance of a first outward passage; and a water drain section (17a) which is connected to the outlet of the last inward passage of the first cover section (10) or is connected to the outlet of the last outward passage of the second cover section (30). With such a configuration, the present invention provides a water-cooled motor structure and a water-cooled housing which allow for easy production of components and increased cooling efficiency.