A stator and a motor including a stator. The stator includes a stator hub, a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base, at least one winding disposed in the stator slot, and one or more oscillating heat pipes disposed at least partially in the at least one winding. The at least one winding is held apart from the stator slot base so that a cooling channel is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes is disposed in the channel so cooling fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes.

A stator and a motor including a stator. The stator includes a stator hub, a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base, at least one winding disposed in the stator slot, and one or more oscillating heat pipes disposed at least partially in the at least one winding. The at least one winding is held apart from the stator slot base so that a cooling channel is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes is disposed in the channel so cooling fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes.

The device for cooling a rotor of a rotating machine comprises: in a rotor assembly (31) comprising the rotor and rotating with the rotor, at least one open cavity (40) having a single opening opening out around the axis of rotation of the rotor, and facing the single opening in the cavity, a cooling-liquid injector (49). The single opening in the cavity (40) simultaneously forms the inlet for the cooling liquid injected by the injector (49) and the discharge for the cooling fluid leaving the cavity in the form of vapour.

In some embodiments: the rotor assembly (31) comprises a shaft (33) and an electric rotor (39) surrounded by an electric stator (46), the cavity (40) being formed, at least, in the shaft (33); the electric stator (46) is traversed, parallel to the axis of rotation of the rotor, by at least one channel (47) configured to convey at least some of the vapour obtained by evaporation of the cooling liquid in the cavity (40) of the shaft (33), and/or the air gap (55) between the electric rotor (39) and the electric stator (46) is configured to convey at least some of the vapour obtained by evaporation of the cooling liquid in the cavity (40) of the shaft (33).

The device for cooling a rotor of a rotating machine comprises: in a rotor assembly (31) comprising the rotor and rotating with the rotor, at least one open cavity (40) having a single opening opening out around the axis of rotation of the rotor, and facing the single opening in the cavity, a cooling-liquid injector (49). The single opening in the cavity (40) simultaneously forms the inlet for the cooling liquid injected by the injector (49) and the discharge for the cooling fluid leaving the cavity in the form of vapour.

In some embodiments: the rotor assembly (31) comprises a shaft (33) and an electric rotor (39) surrounded by an electric stator (46), the cavity (40) being formed, at least, in the shaft (33); the electric stator (46) is traversed, parallel to the axis of rotation of the rotor, by at least one channel (47) configured to convey at least some of the vapour obtained by evaporation of the cooling liquid in the cavity (40) of the shaft (33), and/or the air gap (55) between the electric rotor (39) and the electric stator (46) is configured to convey at least some of the vapour obtained by evaporation of the cooling liquid in the cavity (40) of the shaft (33).

A motor includes a rotor rotatable about a central axis and a stator including coils. The stator opposes the rotor with a gap interposed therebetween. A housing defines at least a portion of a closed chamber in which a cooling medium is housed. Heat dissipation portions are able to release heat of the cooling medium in the closed chamber to an outside. A pressure adjustment portion is able to adjust a pressure in the closed chamber. At least a portion of the coils and the rotor is housed in the closed chamber.

A motor includes a rotor rotatable about a central axis and a stator including coils. The stator opposes the rotor with a gap interposed therebetween. A housing defines at least a portion of a closed chamber in which a cooling medium is housed. Heat dissipation portions are able to release heat of the cooling medium in the closed chamber to an outside. A pressure adjustment portion is able to adjust a pressure in the closed chamber. At least a portion of the coils and the rotor is housed in the closed chamber.

A system for overcooling a drive motor and a method for controlling the same may include a first cooling loop in which a first coolant circulate, the first coolant being in a heat exchange with a power electronics (PE) part and a drive motor cooler mounted in the first cooling line and configured to cool cooling oil supplied to the drive motor fluidically connected to the drive motor cooler; a second cooling loop disposed independently from the first cooling loop, wherein a second coolant circulates in the second cooling loop, the second coolant being in a heat exchange with a battery module and a battery chiller mounted in the second cooling loop; and a switch unit configured to selectively shift a flow path of the second coolant such that the second coolant is in a heat exchange with the drive motor cooler.

A system for overcooling a drive motor and a method for controlling the same may include a first cooling loop in which a first coolant circulate, the first coolant being in a heat exchange with a power electronics (PE) part and a drive motor cooler mounted in the first cooling line and configured to cool cooling oil supplied to the drive motor fluidically connected to the drive motor cooler; a second cooling loop disposed independently from the first cooling loop, wherein a second coolant circulates in the second cooling loop, the second coolant being in a heat exchange with a battery module and a battery chiller mounted in the second cooling loop; and a switch unit configured to selectively shift a flow path of the second coolant such that the second coolant is in a heat exchange with the drive motor cooler.

Stator, in particular a stator manufactured from punch bundled dynamo sheets, for an external rotor and/or an internal rotor motor of an electric machine, comprising a stator yoke, a plurality of stator teeth, as well as in each case one stator groove lying between two stator teeth, wherein at least one heat conducting pipe for cooling the stator is in each case incorporated in the stator groove.

Stator, in particular a stator manufactured from punch bundled dynamo sheets, for an external rotor and/or an internal rotor motor of an electric machine, comprising a stator yoke, a plurality of stator teeth, as well as in each case one stator groove lying between two stator teeth, wherein at least one heat conducting pipe for cooling the stator is in each case incorporated in the stator groove.