Electric machine, component for an electric machine and motor vehicle comprising an electric machine
An electric machine is disclosed and may include at least one component configured as a stator or a rotor and a cooling system. The at least one component may include at least two teeth, each extending along a radial direction of the electric machine, and a winding wound about each tooth. At least one of the windings may include a plurality of winding layer groups arranged one above the other with regard to the radial direction. Each of the winding layer groups may include one or more winding layers arranged one above the other. The winding layer groups may each be formed from a separate and electrically conductive conductor wire. The cooling system may be configured such that a cooling fluid is routed through a hollow cross section of at least two conductor wires such that at least two of the winding layer groups are fluidly coupled in parallel.
1 . An electric machine, comprising:
at least one component configured as a stator or a rotor, the at least one component comprising at least two teeth, each of the at least two teeth extending along a radial direction of the electric machine, and a winding wound about each tooth of the at least two teeth, wherein at least one of the windings comprises a plurality of winding layer groups arranged one above another in the radial direction, each of the winding layer groups comprising one or more winding layers arranged one above another, wherein the winding layer groups are each formed from a separate and electrically conductive conductor wire; and
a cooling system configured such that a cooling fluid is routed through a hollow cross section of at least two electrically conductive conductor wires such that at least two of the winding layer groups are fluidically connected in parallel.
2 . The electric machine according to claim 1 , wherein the electric machine is configured as a salient pole synchronous machine.
3 . The electric machine according to claim 1 , further comprising one or more fluidic input connection components configured to fluidly couple input-side end sections of the electrically conductive conductor wires of at least two winding layer groups with one or more supply chambers, the one or more supply chambers being fluidly coupled upstream of the electrically conductive conductor wires of the at least two winding layer groups, such that the at least two winding layer groups are fluidly coupled in parallel.
4 . The electric machine according to claim 1 , further comprising one or more fluidic output connection components configured to fluidly couple output-side end sections of the electrically conductive conductor wires of at least two winding layer groups with one or more discharge chambers, each of the one or more discharge chambers being fluidly coupled downstream of the electrically conductive conductor wires of the at least two winding layer groups.
5 . The electric machine according to claim 3 , further comprising one or more feed parts arranged next to at least one of the windings in a longitudinal direction of the electric machine,
wherein at least one of the one or more feed parts is configured as a supply part and includes at least one of one or more supply chambers, or
wherein at least one of the one or more feed parts is configured as a discharge part and includes at least one of one or more discharge chambers.
6 . The electric machine according to claim 5 , wherein the component is configured as a rotor,
wherein at least one of the one or more feed parts is formed annularly and is arranged concentrically about the or a rotor shaft of the component, the rotor shaft extending along the longitudinal direction and rotatably mounted, and
wherein at least one of the one or more supply chambers and/or at least one of the one or more discharge chambers is formed annularly and arranged concentrically about the rotor shaft.
7 . The electric machine according to claim 5 , wherein at least one of the one or more fluidic input connection components and/or at least one of the one or more fluidic output connection components is coupled to the feed part.
8 . The electric machine according to claim 1 , further comprising one or more electrical connection components, each of the one or more electrical connection components connecting end sections of the electrically conductive conductor wires of two adjacent winding layer groups of one of the windings to one another, such that the two adjacent winding layer groups are electrically connected in series.
9 . The electric machine according to claim 8 , wherein the end sections of the electrically conductive conductor wires of all pairwise adjacent winding layer groups of a respective winding are connected to one another via an electrical connection component, such that all winding layer groups of the respective winding are electrically connected in series one after the other.
10 . The electric machine according to claim 3 , further comprising at least one common connection component configured to form one of the one or more fluidic connection components and one of one or more electrical connection components, each of the one or more electrical connection components connecting end sections of the electrically conductive conductor wires of two adjacent winding layer groups of one of the windings to one another, such that the two adjacent winding layer groups are electrically coupled in series.
11 . The electric machine according to claim 10 , wherein the at least one common connection component includes a base body comprising an electrically conductive material, the base body having at least one channel and/or at least one chamber configured such that the cooling fluid is routed therethrough.
12 . The electric machine according to claim 1 , wherein the component is configured as the rotor,
wherein the cooling system is configured to form a cooling circuit in which the cooling fluid is conveyed by a conveying device,
wherein a rotor shaft of the component extends along the longitudinal direction of the electrical machine and is rotatably mounted, the rotor shaft including or defining at least one supply channel and/or at least one discharge channel, the at least one supply channel and/or the at least one discharge channel extending at least in sections along the longitudinal direction of the rotor shaft, and
wherein the at least one supply channel extends from the conveying device to at least one of the electrically conductive conductor wires having the hollow cross-section and/or the at least one discharge channel extends from at least one of the electrically conductive conductor wires having the hollow cross-section to the conveying device.
13 . The electric machine according to claim 1 , wherein the component comprises a plurality of parts, at least two parts of the plurality of parts each having at least one of the at least two teeth.
14 . A component for an electric machine, configured as a stator or a rotor, comprising:
at least two teeth extending along a radial direction of the component; and
a winding wound about each tooth of the at least two teeth,
wherein at least one of the windings comprises a plurality of winding layer groups arranged one above the other in the radial direction, each of the plurality of winding layer groups comprising one or more winding layers arranged one above the other,
wherein the winding layer groups are each formed from a separate and electrically conductive conductor wire,
wherein a cooling fluid of a cooling system of the electric machine is routed through a hollow cross section of at least two electrically conductive conductor wires such that at least two of the plurality of winding layer groups are fluidly coupled in parallel.
15 . A motor vehicle, comprising an electric machine according to claim 1 .
16 . The electric machine of claim 1 , wherein the separate and electrically conductive conductor wire of each winding layer group includes a continuous cooling passage extending therethrough for routing the cooling fluid from an inlet end to an outlet end of the separate and electrically conductive conductor wire.
17 . The component of claim 14 , wherein the separate and electrically conductive conductor wire of each winding layer group includes a continuous cooling passage extending therethrough for routing the cooling fluid from an inlet end to an outlet end of the separate and electrically conductive conductor wire.