A motor cooling structure, a drive assembly and a vehicle. The motor cooling structure includes: branch flow-channels (100), shell flow-channels (200), end cover flow-channels (300), a liquid inlet (201) and a liquid outlet (202). A plurality of the branch flow-channels (100) are circumferentially arranged on a stator (1) of a motor around an axis of the motor. The shell flow-channels (200) includes a liquid inlet flow-channel (211), shell long flow-channels and a liquid outlet flow-channel (212). The liquid inlet flow-channel (211), the plurality of shell long flow-channels and the liquid outlet flow-channel (212) are circumferentially arranged on a reducer shell (2) around the axis of the motor. The end cover flow-channels (300) includes end-cover long flow-channels, and a plurality of the end-cover long flow-channels are circumferentially arranged on a motor end cover (3) around the axis of the motor. The shell flow-channels (200), the plurality of branch flow-channels (100) and the end cover flow-channels (300) form a continuous total flow-channel. The liquid inlet (201) is disposed on the reducer shell (2), and is in communication with the liquid inlet flow-channel (211). The liquid outlet (202) is disposed on the reducer shell (2), and is in communication with the liquid outlet flow-channel (212). The motor cooling structure realizes immersion cooling of the motor and improves the cooling efficiency of the motor.

An apparatus includes a housing configured to receive at least a portion of an electric motor. The apparatus also includes a manifold disposed on an upper surface of the housing. The manifold includes a number of vertical jets configured to target one or more portions of the electric motor, the vertical jets includes multiple vias extending between (i) a cavity within the manifold and (ii) an interior portion of the housing. The cavity within the manifold is defined by (i) at least a portion of the upper surface of the housing, (ii) one or more side walls extending from the upper surface of the housing, and (iii) a cover lid coupled to the one or more side walls and configured to cover the cavity and the vias.

An electric motor can include a stator body defining fluid channels extending axially for fluid communication between axial ends of the stator body. Conductive windings can form first loops extending axially outward from the first end of the stator body and second loops extending axially outward from the second end of the stator body. A first cap can be coupled to the first end of the stator body and can include a first wall. The first wall can be between the first loops and the channels. Pins can extend from a side of the first wall that is opposite the first loops. The second cap can be coupled to the second end of the stator body and include a second wall. The second wall can be between the second loops and the channels. Pins can extend from a side of the second wall that is opposite the second loops.

A rotary electric machine includes a rotor shaft, a rotor attached to the rotor shaft, a stator, and a case that houses the rotor and the stator. One end side and the other end side of the rotor shaft in an axial direction are respectively supported by the case via bearings with the rotor interposed therebetween. The bearings electrically insulate the rotor shaft and the case from each other.

An electric machine comprising at least one housing in which a rotor having coolant guide vanes provided at an end face is accommodated, and an annular cooling fin structure through which coolant conveyed by the coolant guide vanes is passed and having cooling fins which are axially covered by an annular cover section in such a way that there is an inlet area for the coolant supplied by the coolant guide vanes and an outlet area, wherein the cooling fin structure is formed on a side of an axial end wall of the housing facing the interior of the housing, on which an annular disk-shaped cover forming the cover section is attached.

An electric motor includes a housing, a shaft, a rotor, a stator, and at least one coolant supply channel. The shaft is rotatably mounted within the housing and has a longitudinal axis. The rotor is fixed to the shaft for rotation therewith. The stator is spaced apart from the rotor along the longitudinal axis of the shaft to yield at least one air gap between the stator and the rotor. The at least one coolant supply channel extends through at least one of the shaft and the stator and is configured to supply coolant flow to the at least one air gap.

A thermal management system for an electrical machine. The thermal management system has a housing circumferentially enclosing a bushing that has a tubular section. At least one fluid channel for a thermal medium is formed by channel walls within the housing and the bushing. A gap is provided or located between the tubular section of the bushing and the channel walls of the housing. The tubular section closes the at least one fluid channel off against a stator of the electrical machine, enabling a heat transfer between the stator and the thermal medium in the at least one channel across the tubular section of the bushing.

The invention relates to a drive unit (1) with a housing (2), an electric motor (3) arranged therein, a transmission (8) coupled to the electric motor (3), at least two oil chambers (15, 16) arranged in the housing (2), which have oil zones (20, 21) and air zones (22, 23) and in which the oil zones (20, 21) are flow-connected to one another by an overflow channel (18). A pump (14) is flow-connected on its suction side with an oil zone (20) and passes oil through the oil chambers (15, 16). A pressure-equalization channel (30) opens into the air zones (22, 23) and flow-connects them to one another.

A rotating electric machine includes a rotor rotatable about an axis, a stator, and a motor housing accommodating the rotor and the stator. The motor housing includes a refrigerant channel through which the refrigerant flows, and a pair of channel ports respectively located at both end portions of the refrigerant channel. The refrigerant channel includes a meander channel extending in a wave shape along the circumferential direction, and a pair of end channels connecting an end portion of the meander channel and a channel port. At least one of the end channels includes a first circumferential channel portion extending along the circumferential direction, a second circumferential channel portion extending along the circumferential direction and overlapping the first circumferential channel portion as viewed along the axis, and an axial channel portion extending along the axial direction and connecting the first circumferential channel portion and the second circumferential channel portion.

Disclosed is a drive unit (1) comprising a housing (2), an electric motor (3) disposed inside the housing, and at least one oil chamber (15) which is disposed in the housing (2). The oil chamber (15) comprises an oil region (21) and an air region (22) and is closed off to the outside by a housing cover (35). The housing cover (35) comprises at least one vent opening (36, 37) for venting the oil chamber (15), which is disposed at a distance from a radial outer region of the housing cover (35) and is fluidically connected to an element (32, 38, 47, 48) for venting the oil chamber (15).