Abstract: An electric rotary machine and a drive arrangement for a motor vehicle. The electric rotary machine having a rotor that rotates about an axis of rotation, a stator, a fluid supply device arranged statically fixed and a distribution element fluidically connected to the fluid supply device and rotatable relative thereto. The fluid supply device has a flow channel with an outlet for discharging cooling fluid in an outlet direction, and an axis of rotation of the distribution element is arranged such that the outlet direction runs tangentially to a circumference of the distribution element so the cooling fluid exiting the outlet can flow tangentially against the distribution element which can be set in rotation based on the incident flow, so the cooling fluid can be distributed around the axis of rotation. Large-area cooling is achieved in a structurally simple manner.

Abstract: A dynamoelectric machine having a stator having a substantially cylindrical or hollow-cylindrical stator body, a rotor arranged substantially coaxially with the stator, two ring elements, of which in each case one is arranged on each end face of the stator body. Each ring element has inlet nozzles through which a cooling fluid can be sprayed onto the winding heads of the stator. Penetration of the cooling fluid into the air gap of the machine is prevented in that each ring element radially and axially encloses the winding heads arranged on the respective end face, such that the winding heads are encased in an annular space bounded by the respective ring element and the respective end side of the stator body.

Abstract: An electromagnetic element for an electric machine, having multiple slots arranged in the circumferential direction of the electromagnetic element, said slots extending in the axial direction of the electromagnetic element and having an open side in the radial direction. A coil device is arranged in the slots, said coil device having winding heads on (at least) one axial end face of the electromagnetic element, and a cooling channel is formed in the slots in order to dispense heat from the coil device using a fluid. A wall element is also provided which has a first region that is arranged in the region of the winding head in the circumferential direction. and a second region of the wall element, said second region adjoining the first region and having teeth which extend in the axial direction and are arranged on the open side of the slots in the intermediate spaces between the slots in the circumferential direction.

Abstract: An electric rotary machine and a drive arrangement for a motor vehicle. The electric rotary machine having a rotor that rotates about an axis of rotation, a stator, a fluid supply device arranged statically fixed and a distribution element fluidically connected to the fluid supply device and rotatable relative thereto. The fluid supply device has a flow channel with an outlet for discharging cooling fluid in an outlet direction, and an axis of rotation of the distribution element is arranged such that the outlet direction runs tangentially to a circumference of the distribution element so the cooling fluid exiting the outlet can flow tangentially against the distribution element which can be set in rotation based on the incident flow, so the cooling fluid can be distributed around the axis of rotation. Large-area cooling is achieved in a structurally simple manner.

Abstract: A cooling device for an electrical drive unit, includes a static feed element which has a coolant feed. The coolant feed has at least one supply channel running along a longitudinal axis of the feed element and multiple outlet channels which are distributed around a circumference of the feed element, run transversely to the supply channel, and emerge from the feed element. A distributor ring, which can rotate relative to the feed element and is designed for coolant distribution, is held on the feed element. The distributor ring is designed and adapted to the outlet channels of the feed element such that the distributor ring is driven directly in a rotary manner by a coolant flow emerging from the outlet channels during operation.

Abstract: An electric machine including a stator having a laminated core and windings, in which a winding head, which is formed by the windings, projects at axial ends of the laminated core in the axial direction beyond the laminated core. A rotor is rotatably mounted in the stator, and the rotor includes a rotor body and a shaft on which the rotor body is fastened. A cooling device is provided for cooling the electric machine with a coolant, and the cooling device is designed to convey the coolant from the shaft towards the winding heads and thus to cool the winding heads. Preferably, the cooling device is also designed to spray the coolant from the shaft towards the winding heads in order to cool the winding heads.