A rotating machine has a shaft rotatable about an axis, a rotor rotatable with the shaft, and a rotor end winding at an axial end of the rotor. A stator is spaced from the rotor and forms a gap therebetween. The stator comprises a stator winding. A fluid system directs fluid through to the stator. A baffle to diverts fluid away from the gap and toward the stator.

A rotating machine has a shaft rotatable about an axis, a rotor rotatable with the shaft, and a rotor end winding at an axial end of the rotor. A stator is spaced from the rotor and forms a gap therebetween. The stator comprises a stator winding. A fluid system directs fluid through to the stator. A baffle to diverts fluid away from the gap and toward the stator.

Electronic devices are disclosed including hydrophobic or oleophobic coatings that control coolant flow therein or thereon. In at least one embodiment, an electric machine is provided including a stator core defining a cavity, windings disposed within the cavity and including end windings protruding from the cavity, and one or more layers of an oleophobic coating overlying the end windings and configured to control a flow of coolant over the end windings. A method may include applying one or more layers of a oleophobic coating to end windings of an electric machine stator such that the one or more layers control a flow of coolant over the end windings. The one or more layers may define coolant flow paths, which may direct coolant to areas of the electric machine requiring additional cooling, such as hot spots or neutral points.

Electronic devices are disclosed including hydrophobic or oleophobic coatings that control coolant flow therein or thereon. In at least one embodiment, an electric machine is provided including a stator core defining a cavity, windings disposed within the cavity and including end windings protruding from the cavity, and one or more layers of an oleophobic coating overlying the end windings and configured to control a flow of coolant over the end windings. A method may include applying one or more layers of a oleophobic coating to end windings of an electric machine stator such that the one or more layers control a flow of coolant over the end windings. The one or more layers may define coolant flow paths, which may direct coolant to areas of the electric machine requiring additional cooling, such as hot spots or neutral points.

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.

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.

A cooling system for a rotary electric machine having an axis of rotation includes a cooling jacket suitable for receiving a stator of the rotary electrical machine, a housing receiving the cooling jacket, in which an outer wall of the cooling jacket forms, with an inner wall of the housing, a cooling chamber through which a cooling fluid can flow. A separator element separates an inlet zone of the cooling chamber and an outlet zone of the cooling chamber. The separator element includes a fastening part, of a first length, fastened to the outer wall of the cooling jacket or the inner wall of the housing, a first separating part, of a second length, inclined relative to the fastening part and non-parallel to the fastening part. The first length is less than the second length such that the first separating part includes comprises a first free end that is not directly connected to the fastening part. The invention also relates to an electric machine equipped with such a cooling system.

A cooling system for a rotary electric machine having an axis of rotation includes a cooling jacket suitable for receiving a stator of the rotary electrical machine, a housing receiving the cooling jacket, in which an outer wall of the cooling jacket forms, with an inner wall of the housing, a cooling chamber through which a cooling fluid can flow. A separator element separates an inlet zone of the cooling chamber and an outlet zone of the cooling chamber. The separator element includes a fastening part, of a first length, fastened to the outer wall of the cooling jacket or the inner wall of the housing, a first separating part, of a second length, inclined relative to the fastening part and non-parallel to the fastening part. The first length is less than the second length such that the first separating part includes comprises a first free end that is not directly connected to the fastening part. The invention also relates to an electric machine equipped with such a cooling system.

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.

A cooling system for a superconducting electric machine may comprise a fluid reservoir and a first fluid comprising a first mixture of hydrogen and helium configured to be stored in the fluid reservoir. A plurality of conduits may be fluidly coupled to the fluid reservoir and may form a closed loop between the fluid reservoir and the superconducting electric machine.