Method for producing an element of a power-generating component of an electric rotation machine, and power-generating component of an electric rotation machine

Abstract

The invention relates to a method for producing an element of a power-generating component of an electric rotation machine and to a power-generating component of an electric rotation machine, having at least one element produced according to the method for producing an element of a power-generating component of an electric rotation machine. In the method for producing an element of a power-generating component of an electric rotation machine (10), multiple laminations (21) are provided which are stacked in a laminated core (20) that forms a stator tooth (11) at least in some regions, and a support lamination (40) is provided, said support lamination (40) being arranged on one face of the laminated core (20) and being connected to multiple laminations (21) of the laminated core (20) by means of a welding (70) along at least one welding seam (13). By virtue of the proposed method for producing an element of a power-generating component of an electric rotation machine and the power-generating component which comprises an element produced in such a manner, technical solutions are provided which facilitate a simple, inexpensive, and time-saving process for fixating individual laminations of a laminated core in order to form teeth.

Description

[0001] Method for producing an element of a power-generating component of an electric rotary machine and power-generating component of an electric rotary machine

[0002] The invention relates to a method for producing an element of a power-generating component of an electric rotary machine, as well as to a power-generating component of an electric rotary machine comprising at least one element produced according to the method for producing an element of a power-generating component of an electric rotary machine. Electric rotary machines comprise a rotor and a stator as the electrical power-generating component. Electric rotary machines can be designed as radial flux machines or as axial flux machines.

[0003] These machines typically have teeth on the stator around which the windings of at least one conducting element are guided in slots between the teeth.

[0004] To increase the efficiency of an electric rotating machine, the teeth are often formed by lamination stacks. These lamination stacks comprise a large number of very thin laminations arranged in a stack. To support the torque transmitted from the stator to the associated rotor, the laminations must be secured.

[0005] WO 2021 003 510 A2 discloses a stator for an axial flux machine, comprising a plurality of stator teeth, each having a tooth body and a return element, and having a plurality of coil windings. The return element consists of a rolled laminated core in which recesses are arranged, in which the tooth bodies of the stator teeth are arranged or which form the tooth bodies of the stator teeth. Laminations of the laminated core can be connected to one another by welding.

[0006] EP 3 174 183 A1 discloses an electrical machine, in particular an axial flux motor, with a rotor mounted for rotation about a machine axis and with a stator. The stator has a sintered support structure and an insert attached thereto, which at least partially forms a pole piece and comprises a laminated core. Laminates of the laminated core can be connected to one another by welding.

[0007] Based on this, the present invention is based on the object of providing a method for producing an element of a power-generating component of an electric rotary machine and a correspondingly produced power-generating component, with which the fixing of individual sheets of a laminated core to form teeth is possible in a simple, cost-effective and time-saving manner.

[0008] This object is achieved by the method for producing an element of a power-generating component of an electric rotary machine according to claim 1 and by the power-generating component according to claim 9. Advantageous embodiments of the method for producing an element of a power-generating component of an electric rotary machine are specified in subclaims 2 to 8. An advantageous embodiment of the power-generating component is specified in subclaim 10.

[0009] 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.

[0010] The invention relates to a method for producing an element of a power-generating component of an electrical rotary machine, in which a plurality of laminations are arranged and provided in a stacked manner in a laminated core forming a tooth at least in part, a carrier lamination is provided, and the carrier lamination is arranged on one side of the laminated core. It is provided that the carrier lamination is connected to a plurality of laminations of the laminated core by welding along at least one weld seam. The element of the power-generating component can be a carrier element which, after welding, is fastened to another element of a stator, such as a stator carrier, or the element of the power-generating component is the stator carrier itself and / or a housing element of the stator. Alternatively, it is provided that the element of the power-generating component is a rotor carrier of a radial flux machine.The sheets can, for example, have a thickness of 0.01 mm–3 mm. They can be designed as electrical sheets. Furthermore, the sheets can each be provided with an insulating layer on at least one of their side surfaces. Alternatively, or additionally, insulating paper can be provided between the sheet layers in the respective stack.

[0011] The entire stack of sheets can be coated with a layer of insulating material or an insulating bonding varnish, for example, with a layer thickness of 0.001 mm - 0.6 mm. The carrier sheet can, for example, have a thickness of 0.1 mm - 10 mm.

[0012] In one embodiment of the method, the welding is carried out through the sheet or the body of the carrier sheet.

[0013] An advantageous embodiment of the method provides that the laminated core is formed from overlapping sheet metal sections of a sheet metal strip, or that the laminated core is formed from stacked, separate individual sheets. The sheet metal strip can be an electrical sheet metal strip and can also be referred to as a so-called slinky. This means that the sheets can be separate individual sheets, or sheet metal sections of a common sheet metal strip that has a plurality of individual sheet metal segments encompassed by a connecting sheet metal strip, which, when the strip is wound in a helical shape, are brought into contact with one another in such a way that a plurality of sheet metal sections arranged in the connecting sheet metal strip overlap one another in stacks and thus form the body of a respective stator tooth in a respective stack of sheets.

[0014] Welding can also be used to directly join several sheets of the laminated core. In particular, directly adjacent sheets can be joined together by welding, along with the creation of a welded joint between the sheets and the carrier sheet. The direct joining of sheets of the laminated core also includes designs where a welded web is formed between sheets of the laminated core.

[0015] One embodiment provides that all the sheets of the laminated core are welded to one another and to the carrier sheet by means of welding. The carrier sheet can have at least one slot that forms two edges, wherein the carrier sheet is welded to several sheets of the laminated core at at least one edge of the slot. In an advantageous embodiment, the welding is carried out on both edges of the slot, optionally with a seam. In this case, the slot can be curved and / or the slot can deviate from a radial direction, in the case of application on an axial flow machine, and from an axial direction, in the case of application on a radial flow machine.

[0016] In this embodiment, the weld connects the two edges together, or a weld is created on each of the two edges by welding.

[0017] Furthermore, a venting groove can be formed in the carrier sheet and / or in the laminated core substantially parallel to the weld seam, so that gas occurring during welding is at least partially drawn out of the venting groove.

[0018] The welding can be carried out on several welds in the carrier plate, whereby the welds can be aligned parallel to each other and / or not parallel to each other.

[0019] The welding can be performed in several weld seams in the carrier sheet, with several weld seams being arranged offset along a circumferential direction and extending at least partially into a common radial region. The common radial region can also be considered an annular zone into which several weld seams extend, offset along the circumference and extending radially with at least one component of their extension direction.

[0020] With regard to the shapes of the weld seams, these multiple weld seams can each be shaped like the individual weld seams mentioned, whereby different weld seam shapes can be combined on one tooth or sheet stack.

[0021] The element produced according to the presented method can be an element extending substantially in a plane, for arrangement with the plane of extension in the radial direction, for forming an element of a power-generating component of an axial flux machine, from which the stator teeth of the axial flux machine extend axially.

[0022] Here, the planes of the sheets are aligned perpendicular to a rotation axis of a rotor of an axial flow machine equipped with the element, and the weld seam accordingly also runs radially with at least one component of its longitudinal direction.

[0023] Alternatively, the element is a substantially circumferentially extending and consequently arcuate element, possibly an annular element, for coaxial arrangement about a rotational axis of a rotor of a radial flux machine equipped with the element, from which the teeth of the radial flux machine extend radially inward or radially outward.

[0024] Here, the planes of the sheets are also aligned perpendicular to a rotational axis of a rotor of a radial flux machine equipped with the element, and the weld seam runs here accordingly with at least one component of its longitudinal direction parallel to the rotational axis.

[0025] After welding, the carrier plate can be secured to a housing element by riveting, screwing, gluing, caulking, and / or welding. The carrier plate, together with the laminated core, can then be riveted, screwed, glued, caulked, and / or welded to a housing element of the power-generating component in a subsequent process. Accordingly, the housing element, with the attached carrier plate and the laminated core welded to it, then forms the element of the power-generating component.

[0026] Another aspect of the present invention is a power-generating component of an electric rotary machine comprising at least one element manufactured according to the method for manufacturing an element of a power-generating component of an electric rotary machine.

[0027] The power-generating component can be designed such that the carrier sheet has a projection projecting towards the laminated core, with which the carrier sheet rests on the laminated core in order to create an external space through which a fluid can flow laterally next to the projection for the purpose of cooling the stator, and / or that the laminated core has a recess at least next to an area where the carrier sheet rests on the laminated core in order to create an internal space through which a fluid can flow laterally next to the contact area for the purpose of cooling the stator. The external space can also be referred to as an external cooling channel. In the area where the projection rests on the laminated core, the carrier sheet can have at least one weld seam.

[0028] The projection can be realized by an embossed portion of the carrier sheet, which forms a corresponding recess on the side of the carrier sheet facing away from the projection. When arranging one or more weld seams in this recess, additional measures are taken to ensure that protruding cover layers of weld seams do not protrude beyond the upper side of the carrier sheet.

[0029] The inner space can also be referred to as an internal cooling channel. At least one weld seam can be created in the carrier sheet in the area where the carrier sheet contacts the laminated core.

[0030] The area where the carrier plate is placed can be formed by the projection of the carrier plate.

[0031] It is also possible that, as already mentioned above, a ventilation groove is formed in the carrier plate and / or the laminated core.

[0032] The power-generating component can be the stator of an axial flux machine, or the stator or rotor of a radial flux machine.

[0033] 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

[0034] Figure 1 : a representation of a welding process for producing the element of a power generating component,

[0035] Figure 2: a sectional view AA along the section line shown in Figure 1,

[0036] Figure 3: a manufactured stator element in perspective view,

[0037] Figure 4: a representation of a welding process for producing the element of a power-generating component with a venting groove of a first embodiment, Figure 5: a sectional view of the element of a power-generating component produced according to Figure 4,

[0038] Figure 6: a representation of a welding process for producing the element of a power-generating component with a venting groove of a second embodiment,

[0039] Figure 7: a sectional view of the element of a power generating component manufactured according to Figure 6,

[0040] Figure 8: a representation of a welding process for producing the element of a power generating component with an external space for cooling,

[0041] Figure 9: a representation of a welding process for producing the element of a power generating component with an internal space for cooling,

[0042] Figure 10: a manufactured stator element of a first embodiment in front view,

[0043] Figure 11: a partial area of ​​the element of a power-generating component shown in Figure 10 in a sectional view along the section line BB indicated in Figure 10,

[0044] Figure 12: a perspective rear view of the manufactured element of a power generating component,

[0045] Figure 13: a perspective front view of the manufactured element of a power generating component,

[0046] Figure 14: a partial area of ​​a manufactured stator element of a second embodiment in side view,

[0047] Figure 15: a perspective front view of the fully manufactured element of a power generating component of the second embodiment,

[0048] Figure 16: a perspective front view of a portion of the element of a power generating component of the first embodiment,

[0049] Figure 17: a perspective rear view of a portion of the element of a power generating component of the first embodiment,

[0050] Figure 18: a perspective front view of a portion of the element of a power generating component of the second embodiment,

[0051] Figure 19: a perspective rear view of a portion of the element of a power-generating component of the second embodiment, Figure 20: a sectional view of a portion of the element of a power-generating component of both the first embodiment and the second embodiment,

[0052] Figure 21 : a first embodiment of the course of a weld seam and consequently of the weld,

[0053] Figure 22: a second embodiment of the course of weld seams and consequently of the welding,

[0054] Figure 23: a third embodiment of the course of a weld seam and consequently of the weld,

[0055] Figure 24: a fourth embodiment of the course of weld seams, slot course and consequently of the weld,

[0056] Figure 25: a fifth embodiment of the course of weld seams and consequently of the welding,

[0057] Figure 26: a sixth embodiment of the course of weld seams and consequently of the welding,

[0058] Figure 27: a seventh embodiment of the course of weld seams and consequently of the welding,

[0059] Figure 28: an eighth embodiment of the course of weld seams and consequently of the welding,

[0060] Figure 29: a ninth embodiment of the course of a weld seam and consequently of the weld,

[0061] Figure 30: an element of a first embodiment of a radial flow machine in perspective view,

[0062] Figure 31: an enlarged section of the element shown in Figure 30, Figure 32: an element of a second embodiment of a radial flow machine in front view, and

[0063] Figure 33: a single tooth of the element of the first embodiment according to Figure 31.

[0064] The figures show exemplary aspects of the method for manufacturing a stator element of an axial flux machine. This means that the power-generating component here is a stator element of an axial flux machine. Figures 1-9 show different embodiments of the carrier sheet and the laminated core welded to it.

[0065] Based on the description of Figures 1-3, common aspects of these embodiments are first explained.

[0066] A laminated core 20 is provided, which comprises a plurality of laminated cores 21 arranged in a stack. A carrier core 40 is arranged on one side of this laminated core 20, only a section of which is shown in Figures 1-9.

[0067] Using a welding device, of which a welding nozzle 12 is shown as an example in Figure 1, a weld is carried out on the carrier sheet 40 or with the sheets 21 of the laminated core 20 along the weld seam 13. The sheets 21 of the laminated core 20 are firmly connected to the carrier sheet 40 by the welds 70. In the embodiment shown here, the sheets 21 are also fixed to one another. The weld 70 thereby provides an element of the power-generating component 10 which comprises a carrier sheet 40 to which the sheets 21 of the laminated core 20 are fixed. Each laminated core 20 essentially forms a respective stator tooth 11, which, according to Figures 1-9, is a stator tooth of an axial flux machine.

[0068] The differences between the embodiments shown in Figures 1-9 are discussed below.

[0069] Figures 1-3 show an embodiment in which one side of the laminated core 20 lies flat against the carrier sheet 40.

[0070] Figures 4-7 show embodiments with venting grooves 60, wherein Figures 4 and 5 illustrate a venting groove 60 of a first embodiment, and Figures 6 and 7 illustrate a venting groove 60 of a second embodiment. Each venting groove 60 serves to dissipate welding gases, which can arise in particular when the sheets 21 of the laminated core 20 have a coating. This prevents or reduces undesirable pore formation in the weld seam. In the embodiment according to Figures 4 and 5, a venting groove 60 is provided in the carrier sheet 40 on both sides of the weld 70 performed or the weld seam 13 formed thereby.

[0071] In the embodiment according to Figures 6 and 7, a venting groove 60 is provided in the laminated core 20 on both sides of the weld 70 carried out or the weld seam 13 formed thereby.

[0072] The depth of each venting groove 60 is dimensioned such that the distance between the top side of the laminated core 20 and the carrier sheet 40 can be bridged by the weld seam 13.

[0073] Figure 8 shows a representation of a welding process for producing the element of a power-generating component of an electric rotary machine with an external cooling space, and Figure 9 shows a representation of a welding process for producing the element of a power-generating component of an electric rotary machine with an internal cooling space. Both embodiments shown here further include a previously described venting groove 60.

[0074] Figure 8 shows an embodiment in which the carrier plate 40 has a projection 61 directed toward the laminated core 20, with which the carrier plate 40 rests against the laminated core 20. As a result, except for the projection 61, the carrier plate 40 is spaced apart from the laminated core 20, and thus partially encloses an outer space 62 or an outer cooling channel through which a coolant can flow for the purpose of cooling the element of a power-generating component when used in an electric rotary machine.

[0075] Figure 9 shows a similar embodiment, but expanded by a recess 30 on the side of the laminated core 20 facing the carrier sheet 40. By placing the carrier sheet 40 against the laminated core 20, an inner space 31 or an inner cooling channel is enclosed by the carrier sheet 40 and the laminated core 20, which can also be used for the flow of a coolant for the purpose of cooling the element of a power-generating component. In the embodiment shown in Figure 9, the outer space 62 and the inner space 31 merge into one another. Furthermore, it can be seen that opposite the projection 61, the carrier sheet 40 has a corresponding recess, which has the advantage that the cover layer of the produced weld seam 13 does not protrude beyond the surface of the carrier sheet 40 and accordingly does not require any additional installation space.

[0076] Figures 10-15 show different embodiments of the laminated cores 20, wherein all the embodiments shown in Figures 10-15 are those of a stator element of an axial flux machine.

[0077] Figures 10-13 show an embodiment of the stator element as an element of a power-generating component 10, in which the stator teeth 11 are formed from laminated cores 20 resulting from the winding of a strip material or electrical steel strip, which comprises a connecting sheet metal strip 23 in which individual sheet metal sections 22 are integrated, which then form the sheets 21 of a respective laminated core 20. This means that the embodiment shown in Figures 10-13 is that of a so-called "slinky," i.e., a wound stator.

[0078] The carrier sheet 40 is designed here as an annular disk. The arrangement of the sheet metal sections 22 in the connecting sheet metal strip 23 is particularly evident in Figure 11. The sheet metal sections 22 are components of the connecting sheet metal strip 23, so that when the connecting sheet metal strip 23 is welded at the position of a stator tooth 11, the relevant sheet metal section 22 is also welded. As Figure 12 illustrates, a plurality of weld seams 13 extending radially relative to a rotational axis 1 of a rotor (not shown here) belonging to the stator element have been created in the carrier sheet 40, with which the connecting sheet metal strip 23 and consequently the sheet metal sections 22 encompassed thereby are welded to the carrier sheet 40 in the manner described.

[0079] Figures 14 and 15 show an alternative embodiment for the production of a stator element as an element of a power-generating component 10. Here, separate individual laminations 24 are arranged in a laminated core 20, which are not connected to one another by a connecting sheet metal strip 23. These individual laminations 24 are welded 70 to the carrier sheet 40 as described above, so that the resulting separate lamination cores 20 then form the individual stator teeth 11 of the element of a power-generating component 10, as shown in Figure 15. Figures 16-20 once again show, in individual representations, the formation of the welded joints for the two embodiments shown in Figures 10-15, but in a slightly modified version. Figures 16-20 show only a section of the carrier sheet 40.Figures 16 and 17 show the section of the carrier sheet 40 with a laminated core 20 arranged thereon, forming a stator tooth 11, according to the embodiment shown in Figures 10-13.

[0080] Figures 18 and 19 show the section of the carrier sheet 40 with a laminated core 20 arranged thereon, forming a stator tooth 11, according to the embodiment shown in Figures 14 and 15.

[0081] Figure 20 shows a sectional view of the embodiments shown in Figures 16 and 18, wherein the weld 70 along the weld seam 13 is clearly visible.

[0082] The respective carrier plate 40 here has at least one slot 50, which accordingly has a first edge 51 and a second edge 52 running parallel to the first edge 51, as can be seen in particular from Figure 17.

[0083] Between the two edges 51, 52, an I-beam is formed as the weld seam 13 if these two edges 51, 52 are relatively close together. Between each edge 51, 52 and the laminated core 20, a fillet weld is essentially formed as the weld seam 13.

[0084] In contrast to the previously described embodiments, in which the sheets 21 of the laminated core 20 were welded through the carrier sheet 40, Figures 16-19 show that no welding takes place through the carrier sheet 40, but rather the carrier sheet 40 is designed to be slotted, and the respective slot 50 serves to carry out a weld seam 13 or several weld seams 13.

[0085] Figures 21-29 show different configurations of one or more weld seams on a respective laminated core forming a stator tooth. For reasons of clarity, separate labeling or designation of the laminated core and the weld seam has been omitted. Figure 21 shows an embodiment in which the weld seam extends radially across the laminated core.

[0086] Figure 22 shows an embodiment in which two weld seams extend parallel to each other and spaced apart from each other along a circumferential direction 80 radially across the laminated core.

[0087] Figure 23 shows an embodiment in which a weld seam extends across the laminated core in a direction deviating from the radial direction, but with a clear radial component.

[0088] Figure 24 shows an embodiment with three weld seams running parallel to each other, extending into a common radial region 81.

[0089] Figure 25 shows several welds in the form of short weld seams or tacks, which are executed parallel to one another, wherein weld seams adjacent to one another along the circumferential direction 80 each extend into a common radial region 81.

[0090] Figure 26 shows a similar embodiment to Figure 25, in which, however, the short weld seams or tacks are realized along three weld paths.

[0091] Figure 27 shows an embodiment in which two weld seams running obliquely and not parallel to each other are realized across the laminated core.

[0092] Figure 28 shows a combination of the embodiment according to Figures 24 and 27, wherein here two weld seams are realized which run obliquely and not parallel to each other, between which a radial weld seam extends into a common radial region 81.

[0093] Figure 29 shows an arc-shaped weld seam.

[0094] All weld seam shapes shown here can be combined with one another.

[0095] The embodiments illustrated in Figures 1-29 relate to a stator element of an axial flux machine in which the stator teeth are axially aligned with respect to a rotational axis of an associated rotor. Figures 30-33 show an alternative embodiment of the element of a power-generating component 10 configured as a stator element for use in a radial flux machine.

[0096] In this embodiment, the carrier plate 40 is essentially hollow-cylindrical, with the laminated cores 20 forming the stator teeth 11 extending radially from the carrier plate 40 with respect to the illustrated rotational axis 1 of an associated rotor. Figure 30 shows a stator element as an element of a power-generating component 10 for forming a stator of a radial flux machine designed as an internal rotor. Here, the stator teeth 11 are arranged on the radial inner side of the carrier plate 40.

[0097] Figure 32 shows a stator element as an element of a power-generating component 10 for forming a stator of a radial flux machine designed as an external rotor. Here, the stator teeth 11 are arranged on the radial outer side of the carrier plate 40.

[0098] As previously described with reference to the method for producing an element of a power-generating component of an electric rotary machine of an axial flux machine, a respective laminated core 20 forming a stator tooth 11 is formed from a plurality of laminated sheets 21 combined in a stack, which are firmly connected to the carrier sheet 40 by means of welds 70 along the illustrated weld seams 13.

[0099] In the embodiment shown here, the laminations 21 are again designed as separate individual laminations 24. However, the embodiment is not limited to the use of separate individual laminations 24; rather, the laminations can also be designed as lamination sections arranged in a common connecting lamination strip 23, which then form a respective lamination stack 20 in the winding by superimposing them, as described for Figures 10-13.

[0100] Figure 33 shows a separate stator tooth 11, which is connected to the carrier plate 40 by means of the weld 70. This stator tooth 11 is wrapped around a winding 14 of a conductor material.

[0101] The method proposed here for producing an element of a power-generating component of an electric rotary machine and the power-generating component comprising an element produced in this way provide technical solutions that enable the fixing of individual laminations of a lamination stack to form teeth in a simple, cost-effective and time-saving manner.

[0102] List of reference symbols

[0103] I Rotation axis

[0104] 10 Element of a power-generating component

[0105] II Stator tooth

[0106] 12 welding nozzle

[0107] 13 Weld seam

[0108] 14 windings

[0109] 20 sheet packages

[0110] 21 sheet metal

[0111] 22 sheet metal section

[0112] 23 connecting sheet metal strips

[0113] 24 separate single sheets

[0114] 30 recess

[0115] 31 inner space

[0116] 40 carrier plate

[0117] 50 slot

[0118] 51 First edge

[0119] 52 Second edge

[0120] 60 venting groove

[0121] 61 lead

[0122] 62 outer space

[0123] 70 Welding

[0124] 80 circumferential direction

[0125] 81 common radial area

Claims

Patent claims 1 . Method for producing an element of a power-generating component of an electrical rotary machine (10), in which a plurality of laminations (21) are arranged and provided in a stacked manner in a laminated core (20) which forms a stator tooth (11) at least in regions, a carrier lamination (40) is provided, the carrier lamination (40) is arranged on one side of the laminated core (20) and is connected to a plurality of laminations (21) of the laminated core (20) by means of welding (70) along at least one weld seam (13).

2. A method for producing an element of a power-generating component of an electric rotary machine according to claim 1, characterized in that the laminated core (20) is formed from overlapping sheet metal sections (22) of a sheet metal strip, or that the laminated core (20) is formed by stacked separate individual sheets (24).

3. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that a plurality of sheets (21) of the laminated core (20) are directly connected to one another by means of the welding (70).

4. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that the carrier sheet (40) has at least one slot (50) which forms two edges (51, 52), and in that the carrier sheet (40) is connected to a plurality of sheets (21) of the laminated core (20) by welding (70) at at least one edge (51, 52) of the slot (50).

5. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that in the carrier plate (40) and / or in the A venting groove (60) is formed in the laminated core (20) substantially parallel to the weld seam (13), and gas occurring during the welding (70) is at least partially drawn out of the venting groove (60).

6. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that the welding (70) is carried out by a plurality of weld seams (13) in the carrier sheet (40), wherein the weld seams (13) i) are aligned parallel to one another, and / or ii) are not aligned parallel to one another.

7. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that the welding (70) is carried out by a plurality of weld seams (13) in the carrier plate (40), wherein a plurality of weld seams (13) are arranged offset along a circumferential direction (80) and extend at least partially into a common radial region (81).

8. A method for producing an element of a power-generating component of an electric rotary machine according to one of the preceding claims, characterized in that the carrier plate (40) is fixed to a housing element by means of riveting, screwing, gluing, caulking and / or welding after welding (70).

9. A power-generating component of an electric rotary machine, comprising at least one element (10) manufactured according to the method for manufacturing an element of a power-generating component of an electric rotary machine according to any one of claims 1 to 8.

10. Power-generating component according to claim 9, characterized in that the carrier plate (40) has a projection (61) projecting in the direction of the laminated core (20), with which projection the carrier plate (40) bears against the laminated core (20) in order to realize an outer space (62) through which a fluid can flow laterally next to the projection (61) for the purpose of cooling the stator, and / or that the laminated core (20) has a recess (30) at least next to a region of contact of the carrier plate (40) with the laminated core (20) in order to realize an inner space (31) through which a fluid can flow laterally next to the contact region for the purpose of cooling the stator.

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