Electric power generating component and electric radial flux machine

Abstract

The invention relates to an electric power generating component and an electric radial flux machine comprising the electric power generating component. The electric power generating component of an electric radial flux machine comprises a component body (10) and, arranged therein, a cooling channel structure with axially parallel circumferential cooling channels (20) which are arranged on a circumference (17) in the component body (10), and at least one deviating cooling channel (30), at least a portion of which deviates from the circumference (17) in the component body (10), wherein the component body (10) has, at least in some portions, a cylindrical lateral surface (24) on its radial outer side (12) in the angular ranges (23) of the arrangement of the circumferential cooling channels (20), and has a shape (34) deviating from the cylindrical lateral surface (24) in the angular range (33) of the arrangement of the deviating cooling channel (30). The power generating component according to the invention and the electric radial flux machine comprising the power generating component provide electric devices which can be produced cost-effectively with a reduced material use and installation space requirement.

Description

[0001] Electrical power generating component and electrical radial flux machine

[0002] The invention relates to an electrical power generating component and an electrical radial flux machine comprising the electrical power generating component.

[0003] The electric drive train is known in the art. It consists of components for energy storage, energy conversion, and energy transmission. The energy conversion components include electric machines. Electric rotating machines comprise a rotor and a stator as the electrical power-generating components.

[0004] These machines typically have teeth on the stator around which the windings of at least one conductor element are guided in slots between the teeth.

[0005] To increase the efficiency of electric rotating machines, it is possible to cool the electric rotating machines. For this purpose, cooling channels can be formed in the bodies of the respective power-generating components. These channels can be used to conduct a coolant suitable for absorbing heat from the respective body and to be directed to the winding heads of the windings for their cooling.

[0006] To ensure uniform cooling and for manufacturing reasons, such cooling channels are often formed along a defined circumference or an ideal circle within the body of the power-generating component. The cooling channels can have a meandering shape, so that linear sections of these cooling channels run between the axial sides of the body, where the cooling medium is redirected in loops.

[0007] The cooling channels are typically supplied by axially arranged supply channels that supply the cooling medium over the same circumference or the same ideal pitch circle as the cooling channels. To minimize material costs and optimize installation space requirements, it is desirable to provide the component body with reduced material usage.

[0008] Based on this, the present invention is based on the object of providing a power-generating component and an electric radial flux machine comprising the power-generating component, which can be manufactured cost-effectively with a reduced use of material and installation space requirement.

[0009] This object is achieved by the power-generating component according to claim 1 and by the electric radial flux machine according to claim 10. Advantageous embodiments of the power-generating component are specified in subclaims 2-9.

[0010] The features of the claims can be combined in any technically reasonable manner, whereby the explanations from the following description as well as features from the figures can also be used to comprise additional embodiments of the invention.

[0011] In the context of the present invention, the terms “radial”, “axial” and “circumference” always refer to the axis of rotation of a rotor of the electric drive machine, which comprises the electrical power-generating component.

[0012] The invention relates to an electrical power-generating component of an electrical radial flux machine, comprising a component body and, arranged therein, a cooling channel structure with axially parallel circumferential cooling channels arranged on a circumference in the component body. Furthermore, the cooling channel structure comprises at least one deviating cooling channel, which runs at least partially deviating from the circumference in the component body. On its radial outer side, the component body is configured, at least partially, with a cylindrical jacket surface in the angular ranges of the arrangement of the circumferential cooling channels, and in the angular range of the arrangement of the deviating cooling channel, the component body is configured with a shape deviating from the cylindrical jacket surface.

[0013] The power-generating component can be a stator or a rotor of the electric radial flux machine. At least sections of the cooling channels run essentially or exactly axially parallel to the rotational axis of a rotor of the electric rotating machine. The winding of the conductor elements of the power-generating component can be realized using so-called hairpins. The circumference runs along an ideal circular line that does not correspond to the outer circumference of the component body.

[0014] In the angular area in which a cooling channel runs in sections deviating from the circumference, no inlets and outlets of a cooling channel are arranged.

[0015] The component body may comprise one or more laminated cores in which the cooling channels are formed.

[0016] If the deviation of the component body from the cylinder surface is radially inward, the sheets forming the component body will also exhibit similar deviations from a circular shape. This makes it possible to arrange these sheets more closely together during stamping processes from sheet metal strips, thus producing the sheets overall with less material. Material savings can occur not only between sheets arranged next to each other in the sheet metal strip, but also in the edge area of ​​the sheet metal strips, allowing the sheet metal strips to have a narrower overall width.

[0017] In an advantageous embodiment, at least the deviating cooling channel runs in a meandering shape, and an inlet and an outlet of the deviating cooling channel are arranged on the circumference. A meandering cooling channel is understood here to mean the entire channel between its inlet and outlet, which extends between the axial sides of the component body, and not just a linear section of the meandering cooling channel.

[0018] Each meandering cooling channel changes direction by 180° once or several times at axially spaced deflection planes.

[0019] This means that the sections of the deviating cooling channel which form the respective inlet or outlet are located on the circumference like the circumferential cooling channels, but further sections of the deviating cooling channel which adjoin the sections of the meandering course equipped with inlet or outlet are located at positions which deviate from the circumference.

[0020] It cannot be ruled out that at least one of the circumferential cooling channels has a meandering shape.

[0021] Because the deviating cooling channel has a meandering shape, it can extend axially through the body with multiple channel sections between its inlet and outlet at multiple angular positions, without requiring an inlet or outlet on the circumference at these angular positions. In the loops of the respective meander, where the flow is deflected, for example, in a range of 170° to 190°, appropriate sealing must be provided between the linear cooling channel sections, for example, with additional axially adjacent components or seals.

[0022] A different cooling channel can run radially further inward than the circumference in sections.

[0023] For example, the deviated cooling channel can run along a chord in the pitch circle of the circumference. This means that individual sections of the deviated cooling channel are arranged at angular positions that are positioned along a chord in the circumference.

[0024] The furthest distance of the chord from the circumference can, for example, be at least 1 / 20 of the radius of the pitch circle of the circumference.

[0025] Here, the component body has a shape on its outer side that is radially inwardly indented in relation to the cylinder surface in the angular areas of the arrangement of the deviating cooling channel.

[0026] Accordingly, a flat flattening or a depression is formed in relation to the cylinder surface.

[0027] A plurality of such recesses may be formed on the radial outer side of the component body of the power-generating component, which recesses may optionally be evenly distributed along the radial outer side of the component body.

[0028] In addition to the already described advantage of material savings when stamping the sheet metal of the component body, this also results in a reduced installation space requirement for the power-generating component. An alternative embodiment provides for a different cooling channel to extend radially further outward than the circumference in certain sections. In this embodiment, the power-generating component has a shape on its outer side that is radially offset relative to the cylinder surface in the angular areas of the arrangement of the different cooling channel. This results in the arrangement of more sheet material in this area, thus increasing the efficiency of the radial flow machine equipped with the power-generating component.

[0029] It is not excluded that a different cooling channel is formed in a power-generating component, which in some sections runs radially further inward than the circumference, and another different cooling channel is formed, which in some sections runs radially further outward than the circumference.

[0030] Furthermore, the power-generating component can have at least one distribution channel that is axially and laterally fluidly connected to inlets and / or outlets of the circumferential cooling channels and the deviating cooling channel. Such a distribution channel can be configured to supply cooling medium to inlets of the cooling channels, or to discharge cooling medium from outlets of the cooling channels and / or to distribute cooling medium to windings or a winding head of the power-generating component, as a so-called nozzle ring.

[0031] The distribution channel runs along the same circumference as the circumferential cooling channels. The deviating cooling channel is arranged radially at different positions than the distribution channel, except for its inlet and outlet.

[0032] The distribution channel can be designed to be 360° circumferential or have an extension of less than 360°.

[0033] In the cooling channel structure, the cooling channels can be arranged in such a way that sectors with congruent cooling channels are present along the circumferential direction. The congruence is present in different, radially extending cutting planes. The number of these sectors refers to the so-called pitch. The pitch or congruence makes it possible to axially connect sheets or lamination stacks at different angular positions while still creating cooling channels with axially parallel sections.

[0034] In an advantageous embodiment, not only the cooling channels are designed to be congruent according to the pitch, but also the teeth and, accordingly, the grooves of the sheets or sheet packages between the teeth.

[0035] For example, a pitch of 4, 6 or 8 can be realized, so that in the component body 4, 6 or 8, in axial view, congruent sectors are present which, rotated about the rotation axis of the rotor of the electric radial flux machine, are in turn congruent with each other, so that the laminations designed with such a pitch can be rotated according to this pitch, and parallelism deviations of the laminations can be compensated accordingly.

[0036] In one sector, one meander-shaped cooling channel or several meander-shaped cooling channels can be arranged, or at least one cooling channel can be arranged only partially.

[0037] Furthermore, the component body can have fastening angle regions for forming radially protruding fastening elements, wherein in at least one of these fastening angle regions at least one deviating cooling channel extends at least partially deviating from the circumference in the component body. This embodiment can be implemented in a stator as an electrical power-generating component.

[0038] An advantageous embodiment provides that the deviating cooling channel extends radially further outward than the circumference in some sections. The fastening elements can be designed as tabs formed on the component body or its sheet metal, also referred to as ears, and which can, for example, have holes for passing a bolt through for axially fastening the stator to a frame.

[0039] If the fastening elements are required, the metal sheets are designed to be correspondingly larger in their angular areas. This also makes it possible to arrange cooling channels that diverge radially further outward for comprehensive cooling of the component body in the area of ​​the fastening elements. The inlet and outlet of at least one meandering cooling channel can be realized on the same axial side of the component body. One embodiment provides that all inlets and also all outlets of the cooling channels are arranged on a common axial end face of the component body. In an alternative embodiment, it is provided that the inlet and outlet of at least one meandering cooling channel are realized on axially opposite sides of the component body.One embodiment provides that the inlet of a cooling channel is arranged on a first axial end face of the component body, and the outlet of this cooling channel is arranged on a second side of the component body, axially opposite the first axial end face of the component body.

[0040] For example, a cooling channel may contain two, three or more linear channel sections.

[0041] In a cooling channel with three linear sections, a first section runs from an inlet on the first side towards the opposite, second side, where it merges in a first loop - without forming an outlet - into a second linear section, which in turn runs towards the first side, where it merges in a second loop - without forming an outlet - into a third linear section, which opens into an outlet on the second side. In the case of a circumferential cooling channel, the inlet as well as the outlet and all linear sections are arranged on the circumference. In the case of a deviating cooling channel, the inlet as well as the outlet are arranged on the circumference, and the linear sections are arranged outside the circumference.

[0042] This means that the channel sections are each connected on one side of the component body to the adjacent channel section of the same meander.

[0043] An embodiment which is advantageous with regard to the cooling of the winding heads on both sides axially provides that a meander-shaped cooling channel has an inlet on a first axial side of the component body and an outlet on the second, axially opposite side of the component body in order to achieve a uniform distribution of the cooling medium on the two axial sides.

[0044] Depending on the design, the inlets of two meandering cooling channels can be arranged directly next to each other on the circumference and thus in directly adjacent angular regions. Depending on the design of the additional cooling channels, the outlets of these two cooling channels can also be arranged directly next to each other on an axial side, or in adjacent angular regions on axially opposite sides of the component body.

[0045] This facilitates the formation of channel sections of the deviating cooling channel that do not run along the circumference.

[0046] Channel sections of the deviating cooling channel outside the circumference can be designed differently in terms of their cross-sectional shape. In addition to the implementation of elongated holes whose long sides run tangentially to pitch circles coaxial with the circumference, cross sections with elongated holes whose long sides extend radially can also be implemented. Other alternative designs can include circular cooling channel cross-sections or even oval cooling channel cross-sections.

[0047] Another aspect of the present invention is an electric radial flux machine having at least one described electrical power-generating component. The electrical power-generating component can be a stator or a rotor of the electric radial flux machine. The electric radial flux machine can be configured to drive a motor vehicle.

[0048] The invention described above will be explained in detail below against the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is in no way limited by the purely schematic drawings, and it should be noted that the embodiments shown in the drawings are not limited to the dimensions shown. It is shown in

[0049] Figure 1: a component body of a power-generating component in the form of a stator in perspective view, Figure 2: a component body of a power-generating component in the form of a stator in axial view,

[0050] Figure 3: a section of the component body on its radial outer side in the area of ​​the arrangement of circumferential cooling channels,

[0051] Figure 4: a section of the component body on its radial outer side in the area of ​​the arrangement of deviating cooling channels,

[0052] Figure 5: a component body of a power-generating component in the form of a stator in a perspective view from a first axial side, Figure 6: a component body of a power-generating component in the form of a stator in a perspective view in a central section, Figure 7: a component body of a power-generating component in the form of a stator in a perspective view from a second axial side, Figure 8: a component body of a power-generating component in the form of a stator in an axial view with marking of the areas of the possible arrangement of deviating cooling channels,

[0053] Figure 9: a first alternative embodiment of the cross-section of the deviating cooling channels,

[0054] Figure 10: a second alternative embodiment of the cross-section of the deviating cooling channels,

[0055] Figure 11 : a perspective view of a portion of a first axial side of the component body, and

[0056] Figure 12: a sectional view of the portion of a first axial side of the component body.

[0057] First, the structure of the power-generating component 1 is explained using Figures 1 and 2.

[0058] Figures 1 and 2 show the component body 10 of a power generating component 1.

[0059] The component body 10 shown here is the body of a stator of a radial flux machine, which has slots on its radial inner side for accommodating windings (not shown here). The radial position refers to the rotational axis 18 of a rotor (not shown here), which, together with the stator, forms an electrical radial flux machine. The component body 10 is composed of several laminated cores 11 positioned axially one behind the other. It can be seen that the component body 10 essentially has the shape of a cylindrical outer surface 24 on its radial outer side 12.

[0060] The component body 10 comprises a cooling channel structure axially penetrating it or its laminated cores 11, which is positioned relatively close to the radial outer side 12. This cooling channel structure comprises circumferential cooling channels 20 and deviating cooling channels 30.

[0061] The circumferential cooling channels 20 are arranged on a circumference 17 along an ideal circular line, which is not shown in its entirety in Figures 1 and 2 for reasons of clarity, in corresponding angular regions 23. The deviating cooling channels 30, however, are not arranged on this circumference 17, but at positions that deviate from this circumference 17.

[0062] Figures 1 and 2 show that the deviating cooling channels 30 extend radially further inward with respect to the circumference 17, namely on chords 35. This makes it possible for the radial outer side 12 of the component body 10 to have a shape 34 that differs from the cylinder jacket surface 24 in the form of a flattening or depression in angular regions 33 of the arrangement of the deviating cooling channel 30.

[0063] This different shape 34 or flattening of the sheet stacks 11 means that the individual sheets of the sheet stacks 11 can be manufactured with less material, since the sheets can be positioned closer together and closer to an edge of a sheet metal semi-finished product during punching processes, and therefore the sheet metal semi-finished product can be made narrower and more sheets can be punched from the sheet metal semi-finished product due to the closer arrangement of the sheets to one another.

[0064] The cooling channels 20, 30 shown in Figures 1 and 2 run in a meandering shape through the component body 10. Such a meandering shape is explained below using a different cooling channel 30 and a circumferential cooling channel 20.

[0065] The arrows shown radially inward in the component body 10 illustrate the coolant flow 19. A first cooling channel 101 is formed in the component body 10, of which an inlet 21 and an outlet 22 are marked. This first cooling channel 101 is a circumferential cooling channel 20, since it runs along the circumference 17.

[0066] Furthermore, a second cooling channel 102 is formed in the component body, of which an inlet 31 and an outlet 32 ​​are marked. This second cooling channel 102 is a different cooling channel 30, since it runs partially along the chord 35 and thus deviates from the circumference 17.

[0067] It can be seen that the respective inlet 31 and the respective outlet 32 ​​of these two cooling channels are circumferentially spaced from each other. The fluidic connection between the respective inlets 31 and the respective outlets 32 is achieved by a meandering shape of the cooling channels, wherein a respective cooling channel 101, 102 has linear sections extending in the axially central region of the component body 10, as well as axially arranged deflections 41 that form the loops of the respective meander and fluidically connect the linear sections to each other.

[0068] Deflections 41 shown radially inside the component body 10 symbolize deflections 41 implemented on the facing axial side, and deflections 41 shown radially outside the component body 10 symbolize deflections 41 implemented on the facing away axial side.

[0069] In the embodiment shown here, all inlets of the cooling channels 20, 30 are located on the first axial side. Depending on the number of deflections 41, the outlets of the cooling channels 20, 30 can be located on the first axial side or on the second axial side.

[0070] Furthermore, it can be seen that all linear sections 40 of a respective circumferential cooling channel 20, which can be seen in section in Figure 2, all lie on the circumference 17, as do a respective inlet 21 of the circumferential cooling channel 20 and the associated outlet 21 of the circumferential cooling channel 20.

[0071] However, this is different with a deviating cooling channel 30. Here, only the inlet 31 of the deviating cooling channel 30 and the outlet 32 ​​of the deviating cooling channel 30 are located on the circumference 17, as illustrated by the second cooling channel 102. The linear sections 40 of the deviating cooling channel 30 and the second cooling channel 102 are located on the chord 35 and thus outside the circumference 17. The following cooling channels shown are circumferential cooling channels 20:

[0072] - the first cooling channel 101

[0073] - the third cooling channel 103

[0074] - the sixth cooling channel 106 and

[0075] - the eighth cooling channel 108.

[0076] The following cooling channels shown are different cooling channels 30:

[0077] - the second cooling channel 102

[0078] - the fourth cooling channel 104

[0079] - the fifth cooling channel 105 and

[0080] - the seventh cooling channel 107.

[0081] The sheets of the laminated cores are designed in such a way that they form sectors 60 with congruently arranged cooling channels 20, 30, which makes it possible to arrange the sheets one behind the other according to this division, rotated by certain angles, and at the same time, due to the congruence, to form the cooling channels in the laminated cores in the desired manner.

[0082] Figures 3 and 4 each show sections of the component body on its radial outer side in the area of ​​the arrangement of circumferential cooling channels 20 and in the area of ​​the arrangement of deviating cooling channels 30.

[0083] It can be seen that the component body 10 is composed of several laminated cores 11 arranged axially one behind the other, through which the coolant channels 20, 30 extend axially.

[0084] Figure 3 shows a sectional view of a portion of the component body in which a circumferential cooling channel 20 is arranged. The component body 10 is closed off on a first axial side 13 by a first axial side element 15, and on an axially opposite second axial side 14 by a second axial side element 16.

[0085] The coolant flow 19 is guided from a first distribution channel 50 in the first side element 15 into the inlet 21 of the circumferential cooling channel 20, from where the coolant flow 19 is guided through a linear section 40 of the circumferential cooling channel 20 in the direction of the axially opposite second axial side 14. Here, a deflection (not shown here) may occur several times, and a return is again made to the first axial side 13, until the coolant flow 19 again reaches a second distribution channel 51 on the first axial side 13 via an outlet 22 there.

[0086] A respective one of the two distribution channels 51, 52 can be designed not only to fluidically connect the cooling channels to one another, but also to apply coolant to the first winding head 3 on the first axial side 13 and to the second winding head 4 on the second axial side 14, which are electrically connected to one another via the respective winding 2.

[0087] Figure 4 shows a sectional view of a portion of the component body in which a different cooling channel 30 is arranged. Here, too, the component body 10 is closed off on a first axial side 13 by a first axial side element 15, and on an axially opposite second axial side 14 by a second axial side element 16.

[0088] However, it can be seen that the radial outer side 12 is indented radially inward compared to the area shown in Figure 3. The deviating cooling channel 30 also runs radially further inward. Only a linear section 40 of this deviating cooling channel 30 is shown here. This linear section 40 is axially sealed on both sides by a seal 42, which prevents coolant from escaping both from the deviating cooling channel 30 and from the distribution channels 50, 51 formed in the two axial side elements 15, 16. The inlets and outlets of the deviating cooling channel 30 are not shown here, as they are located on the circumference not encompassed by the sectional view shown.

[0089] In the axial end regions of the linear section 40, deflections 41 are realized in order to form the meander shape of the deviating cooling channel 30.

[0090] Figure 5 shows the component body in a perspective view from a first axial side, Figure 6 shows the component body in a central section and Figure 7 shows the component body in a perspective view from a second, axially opposite side.

[0091] From Figures 5 and 7, it can be seen that the deviating cooling channel 30 has deflections 41 in its axial end regions, which widen the deviating cooling channel 30 in these axial end regions. However, in a central section through the component body 10 according to Figure 6, it can be seen that the deviating cooling channel 30 is formed by relatively narrow linear sections 40.

[0092] A respective circumferential cooling channel 20 also has linear sections 40 in a central section according to Figure 6, and also linear sections 40 at the axial end regions according to Figures 5 and 7, or else deflections 41.

[0093] Figure 8 illustrates, in the optically highlighted zones, the areas in which cooling channels deviating from the circumference can be arranged, such as the second cooling channel 102, the fourth cooling channel 104, the fifth cooling channel 105 and the seventh cooling channel 107.

[0094] It is not excluded that the first cooling channel 101, the third cooling channel 103, the sixth cooling channel 106 and the eighth cooling channel 108 also run deviating from the circumference 17, for example (not shown) radially further outward in one of the fastening angle regions 70, which is shown by way of example in Figure 1.

[0095] Here, fastening elements 71 in the form of tabs are located, which are formed through the sheets of the laminated cores and in which holes 72 are formed, for the mechanical fastening of the component body 10.

[0096] The cooling channels 20, 30 can have different geometric cross-sectional shapes, as shown by way of example in Figures 9 and 10. Figure 9 shows an embodiment in which a different cooling channel 30 essentially has the shape of an elongated hole in cross section, the longer side of which runs along the chord, shown in Figure 2.

[0097] Particularly in angular areas in which there is more radial space for the arrangement of cooling channels, the circumferential cooling channel 20 shown as an example in Figure 10 can also have an elongated hole shape in cross section, in which the longer side of the elongated hole runs essentially radially.

[0098] Figures 11 and 12 illustrate a specific embodiment of a circumferential cooling channel 20. Figure 11 illustrates a deflection 41 of the meandering circumferential cooling channel 20, which opens into the illustrated outlet 22. It can be seen that this outlet 22 extends further radially inward than the circumference on which the deflection 41 is located. This enables the coolant flow 15 to be directed to the first winding head 3 in a simple design. The power-generating component proposed here, as well as the electric radial flux machine comprising the power-generating component, provide electrical devices that can be manufactured cost-effectively with reduced material usage and installation space requirements.

[0099] List of reference symbols

[0100] 1 power-generating component

[0101] 2 windings

[0102] 3 first winding head

[0103] 4 second winding head

[0104] 5 grooves

[0105] 10 component bodies

[0106] 11 sheet package

[0107] 12 radial outer side

[0108] 13 first axial side

[0109] 14 second axial side

[0110] 15 first axial side element

[0111] 16 second axial side element

[0112] 17 Scope

[0113] 18 Axis of rotation of a rotor

[0114] 19 Coolant flow

[0115] 20 circumferential cooling channel

[0116] 21 Inlet of the circumferential cooling channel

[0117] 22 Outlet of the circumferential cooling channel

[0118] 23 Angular range of the arrangement of a circumferential cooling channel

[0119] 24 Cylinder surface

[0120] 30 different cooling channel

[0121] 31 Inlet of the deviating cooling channel

[0122] 32 Outlet of the deviating cooling channel

[0123] 33 Angular range of the arrangement of the deviating cooling channel

[0124] 34 different form

[0125] 35 tendon

[0126] 40 linear section

[0127] 41 Deflection

[0128] 42 Seal 50 First distribution channel

[0129] 51 Second distribution channel

[0130] 60 Sector

[0131] 70 Mounting angle range 71 Mounting element (tab

[0132] 72 bore

[0133] 101 first cooling channel

[0134] 102 second cooling channel

[0135] 103 third cooling channel 104 fourth cooling channel

[0136] 105 fifth cooling channel

[0137] 106 sixth cooling channel

[0138] 107 seventh cooling channel

[0139] 108 eighth cooling channel

Claims

Patent claims 1. An electrical power-generating component of an electrical radial flux machine, comprising a component body (10) and, arranged therein, a cooling channel structure with axially parallel circumferential cooling channels (20) which are arranged on a circumference (17) in the component body (10), and at least one deviating cooling channel (30) which runs at least partially deviating from the circumference (17) in the component body (10), wherein the component body (10) is configured on its radial outer side (12) in the angular ranges (23) of the arrangement of the circumferential cooling channels (20) at least partially with a cylindrical jacket surface (24), and in the angular range (33) of the arrangement of the deviating cooling channel (30) is configured with a shape (34) which deviates from the cylindrical jacket surface (24).

2. Electrical power-generating component according to claim 1, characterized in that at least the deviating cooling channel (30) runs in a meandering shape, and an inlet (31) and an outlet (32) of the deviating cooling channel (30) are arranged on the circumference (17).

3. Electrical power-generating component according to one of the preceding claims, characterized in that a deviating cooling channel (30) extends in sections with respect to the circumference (17) radially further inward than the circumference (17).

4. Electrical power-generating component according to one of the preceding claims, characterized in that a deviating cooling channel (30) extends in sections with respect to the circumference (17) radially further outwards than the circumference (17).

5. Electrical power-generating component according to one of the preceding claims, characterized in that the power-generating component (1) has at least one distribution channel (50,51) which is fluidically connected axially and laterally to inlets and / or outlets (21,22,31,32) of the circumferential cooling channels (20) and the deviating cooling channel (30).

6. Electrical power-generating component according to one of the preceding claims, characterized in that in the cooling channel structure the cooling channels (20, 30) are arranged such that sectors (60) with congruently arranged cooling channels (20, 30) are present along the circumferential direction.

7. Electrical power-generating component according to one of the preceding claims, characterized in that the component body (10) has fastening angle regions (70) for forming radially projecting fastening elements (71), wherein in at least one of these fastening angle regions (70) at least one deviating cooling channel (30) runs at least partially deviating from the circumference (17) in the component body (10).

8. Electrical power-generating component according to one of claims 2-7, characterized in that the inlet (21, 31) and the outlet (22, 32) of at least one meander-shaped cooling channel (20, 30) are realized on the same axial side (13, 14) of the component body (10).

9. Electrical power-generating component according to one of claims 2-7, characterized in that the inlet (21, 31) and the outlet (22, 32) of at least one meander-shaped cooling channel (20, 30) are realized on axially opposite sides (13, 14) of the component body (10).

10. An electric radial flux machine comprising at least one electrical power generating component according to one of claims 1 to 9.

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