Method for manufacturing an element of a power-generating component of an electric rotary machine and power-generating component of an electric rotary machine

Abstract

The invention relates to a method for manufacturing an element of a power-generating component of an electric rotary machine and to 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. In the method for manufacturing an element of a power-generating component of an electric rotary machine (10), several laminations (21) are stacked and arranged in a lamination stack (20) which at least partially forms a stator tooth (11), and a support lamination (40) is provided, the support lamination (40) is arranged on one side of the lamination stack (20) and is connected to several laminations (21) of the lamination stack (20) by means of welding (70) along at least one weld seam (13). The proposed method for manufacturing an element of a power-generating component of an electric rotary machine and the power-generating component comprising such an element provide technical solutions that enable the fixing of individual sheets of a sheet metal stack to form teeth in a simple, cost-effective and time-saving manner.

Description

[0001] 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.

[0002] 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.

[0003] 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.

[0004] 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.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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 sheets of the laminated core are welded together and welded to the carrier sheet by means of welding.

[0016] The carrier plate can have at least one slot forming two edges, wherein the carrier plate is connected to several sheets of the laminated core by welding 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. The slot can be curved and / or 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.

[0017] In this embodiment, the weld connects the two edges together, or a weld is created on each of the two edges by welding.

[0018] 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.

[0019] 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.

[0020] The welding can be performed in several weld seams in the carrier sheet, with several weld seams 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] After welding, the carrier plate can be secured to a housing element by riveting, screwing, gluing, caulking, and / or welding. In a subsequent process, the carrier plate, together with the laminated core, can be riveted, screwed, glued, caulked, and / or welded to a housing element of the power-generating component. 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.

[0027] 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.

[0028] 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 against 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.

[0029] 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.

[0030] 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.

[0031] The area where the carrier plate is placed can be formed by the projection of the carrier plate.

[0032] It is also possible that, as already mentioned above, a ventilation groove is formed in the carrier plate and / or the laminated core.

[0033] The power-generating component can be the stator of an axial flux machine, or the stator or rotor of a radial flux machine.

[0034] 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 Fig. 1: a representation of a welding process for producing the element of a power-generating component, Fig. 2: a sectional view AA along the Fig. 1 shown section, Fig. 3: a manufactured stator element in perspective view, Fig. 4: a representation of a welding process for producing the element of a power-generating component with a venting groove of a first embodiment, Fig. 5: a sectional view of the Fig. 4 manufactured element of a power-generating component, Fig. 6: a representation of a welding process for producing the element of a power-generating component with a venting groove of a second embodiment, Fig. 7: a sectional view of the Fig. 6 manufactured element of a power-generating component, Fig. 8: a representation of a welding process for producing the element of a power generating component with an external space for cooling, Fig. 9: a representation of a welding process for producing the element of a power generating component with an internal space for cooling, Fig. 10: a manufactured stator element of a first embodiment in front view, Fig. 11: a part of the Fig. 10 shown element of a power generating component in sectional view along the Fig. 10 indicated cutting line BB, Fig. 12: a perspective rear view of the manufactured element of a power generating component, Fig. 13: a perspective front view of the manufactured element of a power generating component, Fig. 14: a partial area of ​​a manufactured stator element of a second embodiment in side view, Fig. 15: a perspective front view of the fully manufactured element of a power generating component of the second embodiment, Fig. 16: a perspective front view of a portion of the element of a power generating component of the first embodiment, Fig. 17: a perspective rear view of a portion of the element of a power generating component of the first embodiment, Fig. 18: a perspective front view of a portion of the element of a power generating component of the second embodiment, Fig. 19: a perspective rear view of a portion of the element of a power generating component of the second embodiment, Fig. 20: a sectional view of a portion of the element of a power generating component of both the first embodiment and the second embodiment, Fig. 21: a first embodiment of the course of a weld seam and consequently of the weld, Fig. 22: a second embodiment of the course of weld seams and consequently of the welding, Fig. 23: a third embodiment of the course of a weld seam and consequently of the weld, Fig. 24: a fourth embodiment of the course of weld seams, slot course and consequently of the weld, Fig. 25: a fifth embodiment of the course of weld seams and consequently of the welding, Fig. 26: a sixth embodiment of the course of weld seams and consequently of the welding, Fig. 27: a seventh embodiment of the course of welds and consequently of the welding, Fig. 28: an eighth embodiment of the course of welds and consequently of the welding, Fig. 29: a ninth embodiment of the course of a weld seam and consequently of the weld, Fig. 30: an element of a first embodiment of a radial flow machine in perspective view, Fig. 31: an enlarged section of the Fig. 30 shown element, Fig. 32: an element of a second embodiment of a radial flow machine in front view, and Fig. 33: a single tooth of the element of the first embodiment according to Fig. 31.

[0035] 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.

[0036] The Fig. 1-9 show different designs of the carrier sheet and the laminated core arranged thereon by welding.

[0037] Based on the description of the Fig. 1-3, common aspects of these embodiments are first explained.

[0038] A laminated core 20 is provided, which comprises several sheets 21 arranged in a stack. On one side of this laminated core 20, a carrier sheet 40 is arranged, from which Fig. 1-9 only show a section each.

[0039] Using a welding machine, of which Fig. 1, a welding nozzle 12 is shown as an example, a weld of the carrier sheet 40 or with the sheets 21 of the laminated core 20 is carried out along the weld seam 13. By means of the welds 70, the sheets 21 of the laminated core 20 are firmly connected to the carrier sheet 40. In the embodiment shown here, the sheets 21 are also fixed to one another. By means of the weld 70, an element of the power-generating component 10 is provided, which comprises a carrier sheet 40, to which the sheets 21 of the laminated core 20 are fixed. A respective laminated core 20 essentially forms a respective stator tooth 11, which according to the Fig. 1-9 is a stator tooth of an axial flux machine.

[0040] The following explains the differences between the Fig. The embodiments shown in Figures 1-9 are discussed.

[0041] Fig. 1-3 shows an embodiment in which one side of the laminated core 20 lies flat against the carrier sheet 40.

[0042] In the Fig. 4-7 embodiments with venting grooves 60 are shown, wherein the Fig. 4 and Fig. 5 represent a venting groove 60 of a first embodiment, and the Fig. 6 and Fig. 7 illustrates a venting groove 60 of a second embodiment. Each venting groove 60 serves to dissipate welding gases, which can occur particularly when the sheets 21 of the laminated core 20 have a coating. This prevents or reduces unwanted pore formation in the weld seam.

[0043] In the embodiment according to the Fig. 4 and Fig. 5, a venting groove 60 is provided in the carrier plate 40 on both sides of the weld 70 carried out or the weld seam 13 formed thereby.

[0044] In the embodiment according to the Fig. 6 and Fig. 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.

[0045] 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.

[0046] Fig. Figure 8 shows a representation of a welding process for manufacturing the element of a power generating component of an electric rotary machine with an external space for cooling, and Fig. 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.

[0047] Fig. 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.

[0048] Fig. Figure 9 shows a similar embodiment, which, however, is extended 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. Fig. In the embodiment shown in Figure 9, the outer space 62 and the inner space 31 merge into one another.

[0049] Furthermore, it can be seen that opposite the projection 61, the carrier plate 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 plate 40 and accordingly does not require any additional installation space.

[0050] The Fig. 10-15 show different embodiments of the laminated cores 20, whereby all the Fig. The embodiments shown in Figures 10-15 are those of a stator element of an axial flux machine.

[0051] The Fig. 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, which result from the winding of a strip material or electrical steel strip, which comprises a connecting sheet strip 23, in which individual sheet sections 22 are integrated, which then form the sheets 21 of a respective laminated core 20. This means that the Fig. The embodiment shown in Figures 10-13 is that of a so-called “slinky”, i.e. a wound stator.

[0052] The carrier plate 40 is designed here as an annular disc. The arrangement of the sheet metal sections 22 in the connecting sheet metal strip 23 is particularly Fig. 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 corresponding sheet metal section 22 is also welded. Fig. 12, a plurality of weld seams 13 extending radially relative to a rotation axis 1 of a rotor (not shown here) belonging to the stator element have been produced in the carrier sheet 40, with which weld seams the connecting sheet metal strip 23 and consequently the sheet metal sections 22 encompassed thereby have been welded to the carrier sheet 40 in the manner described.

[0053] The Fig. 14 and Fig. 15 show an alternative embodiment of the production of a stator element as an element of a power-generating component 10. Here, separate individual sheets 24 are arranged in a laminated core 20, which are not connected to one another by a connecting sheet metal strip 23. As described above, these individual sheets 24 are welded 70 to the carrier sheet 40, so that the separate laminated cores 20 produced in this way can then be welded as shown in Fig. 15 shows the individual stator teeth 11 of the element of a power-generating component 10.

[0054] The Fig. 16-20 show once again in individual representations the formation of the welded joints to the two in the Fig. 10-15, but in a slightly modified version. Fig. 16-20 show only a section of the carrier plate 40. The Fig. 16 and Fig. 17 show the section of the carrier plate 40 with a laminated core 20 arranged thereon forming a stator tooth 11 according to the Fig. 10-13 illustrated embodiment.

[0055] The Fig. 18 and Fig. 19 show the section of the carrier sheet 40 with a laminated core 20 arranged thereon forming a stator tooth 11 according to the Fig. 14 and Fig. 15 illustrated embodiment.

[0056] Fig. 20 shows a sectional view of the Fig. 16 and Fig. 18, wherein the weld 70 along the weld seam 13 is clearly visible.

[0057] The respective carrier plate 40 has at least one slot 50, which has a first edge 51 and a second edge 52 running parallel to the first edge 51, as can be seen in particular from Fig. 17 is evident.

[0058] 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 to each other. Between each edge 51, 52 and the laminated core 20, a fillet weld is essentially formed as the weld seam 13.

[0059] In contrast to the previously described embodiments, in which the sheets 21 of the laminated core 20 were welded through the carrier sheet 40, the Fig. 16-19 show that no welding takes place through the carrier plate 40, but the carrier plate 40 is slotted, and the respective slot 50 serves to carry out a weld seam 13 or several weld seams 13.

[0060] The Fig. Figures 21-29 show different configurations of one or more weld seams on a 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.

[0061] Fig. 21 shows an embodiment in which the weld extends radially across the laminated core.

[0062] Fig. 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.

[0063] Fig. 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.

[0064] Fig. 24 shows an embodiment with three weld seams running parallel to each other, extending into a common radial region 81.

[0065] Fig. 25 shows a plurality of 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.

[0066] Fig. 26 shows a similar embodiment as Fig. 25, in which, however, the short weld seams or tacks are realized along three weld paths.

[0067] Fig. 27 shows an embodiment in which two weld seams running obliquely and not parallel to each other are realized across the laminated core.

[0068] Fig. 28 shows a combination of the embodiment according to the Fig. 24 and Fig. 27, whereby 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.

[0069] Fig. 29 shows an arc-shaped weld seam.

[0070] All weld seam shapes shown here can be combined with one another.

[0071] The Fig. 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.

[0072] Fig. 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.

[0073] In this embodiment, the carrier plate 40 is essentially hollow-cylindrical in shape, wherein the laminated cores 20 forming the stator teeth 11 extend radially from the carrier plate 40 with respect to the illustrated axis of rotation 1 of an associated rotor. Fig. 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 inside of the carrier plate 40.

[0074] Fig. 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.

[0075] 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.

[0076] 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, but the laminations can also be designed as lamination sections that are arranged in a common connecting lamination strip 23 and which then form a respective lamination stack 20 in the winding by superposition, as is the case with the Fig. 10-13.

[0077] Fig.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.

[0078] 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. List of reference symbols 1 rotation axis 10 Element of a power-generating component 11 stator tooth 12 welding nozzle 13 Weld seam 14 windings 20 sheet packages 21 sheet metal 22 sheet metal section 23 connecting sheet metal strips 24 separate single sheets 30 recess 31 inner space 40 carrier plate 50 slot 51 First edge 52 Second edge 60 venting groove 61 lead 62 outer space 70 Welding 80 circumferential direction 81 common radial area QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] WO 2021 003 510 A2

[0004] EP 3 174 183 A1

[0005]

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 some 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 of manufacturing an element of a power generating component of an electric rotary machine according to claim 1, characterized by 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 manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized by that several sheets (21) of the laminated core (20) are directly connected to one another by means of the welding (70). [4] A method for manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized by that the carrier sheet (40) has at least one slot (50) which forms two edges (51, 52), and that the carrier sheet (40) is connected to a plurality of sheets (21) of the laminated core (20) at at least one edge (51, 52) of the slot (50) by means of welding (70). [5] A method of manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized bythat a venting groove (60) is formed in the carrier sheet (40) and / or in the sheet stack (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 of manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized by that the welding (70) is carried out by several weld seams (13) in the carrier sheet (40), wherein the weld seams (13) i) are aligned parallel to each other, and / or ii) are not aligned parallel to each other. [7] A method for manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized bythat the welding (70) is carried out by a plurality of welding seams (13) in the carrier sheet (40), wherein a plurality of welding 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 manufacturing an element of a power-generating component of an electric rotary machine according to any one of the preceding claims, characterized by 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 by that the carrier plate (40) has a projection (61) projecting in the direction of the laminated core (20), with which the carrier plate (40) rests on the laminated core (20) in order to create an outer space (62) through which a fluid can flow for the purpose of cooling the stator laterally next to the projection (61), and / or that the laminated core (20) has a recess (30) at least next to an area where the carrier plate (40) rests on the laminated core (20) in order to create an inner space (31) through which a fluid can flow for the purpose of cooling the stator laterally next to the contact area.

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