Electric machine for a motor vehicle, method for manufacturing such an electric machine, and rotor for such an electric machine

Abstract

The present invention relates to an electric motor (1) for a motor vehicle, the electric motor having: a lamination assembly (5) as a first component; and at least one end plate (6) as a second component, the end plate being adjacent to and disposed on the axial end face (AS1) of the lamination assembly (5) in the axial direction (11) of the motor (1) and being separately constructed from the lamination assembly (5), wherein the end plate (6) is threadedly connected to and thus fixed to the lamination assembly (5).

Description

Technical Field

[0001] This invention relates to an electric motor for a motor vehicle as described in the preamble of claim 1. Furthermore, this invention relates to a method for manufacturing such an electric motor as described in the preamble of claim 6. The invention also relates to a rotor for such an electric motor as described in the preamble of claim 10. Background Technology

[0002] DE102021102430A1 discloses a rotor for a power transmission motor. WO2020 / 099048A1 discloses a support device for the rotor of a separately excited internal rotor synchronous motor for an electrically driven motor vehicle. DE102019205101A1 discloses a method for manufacturing electromechanical components for an electric motor. Furthermore, EP3669439B1 discloses a rotor for an electric motor. Additionally, EP2793365A1 discloses a single-section rotor. Finally, DE102021123673A1 discloses a support device for the rotor of an electric motor. Summary of the Invention

[0003] The object of the present invention is to provide an electric motor for a motor vehicle, a method for manufacturing such an electric motor, and a rotor for such an electric motor, so that the electric motor can be manufactured in a particularly advantageous manner.

[0004] According to the invention, this task is accomplished by an electric motor having the features of claim 1, by a method having the features of claim 6, and by a rotor having the features of claim 10. Advantageous configurations of the invention are the subject of the dependent claims.

[0005] The first aspect of the invention relates to an electric motor for a motor vehicle, which may also be simply referred to as a vehicle. This means that a motor vehicle, preferably constructed as an automobile, especially a passenger car, has the motor in its fully manufactured state and can be electrically driven, especially purely electrically, by means of the motor. Preferably, the motor is a high-voltage component, the voltage of which, especially the electrical operating voltage or rated voltage, is preferably greater than 50 volts, especially greater than 60 volts, and particularly preferably several hundred volts. The motor, for example, has a rotor and a stator, the rotor being driven by means of the stator and thereby rotatable relative to the stator about the motor's rotational axis. For example, the motor can provide driving torque through its rotor for driving motor vehicles, especially purely electrically. In particular, the motor is constructed as an internal rotor, i.e., constructed as an internal rotor motor, which is also referred to as an internal rotor motor. Preferably, the motor is constructed as a separately excited and / or electrically excited synchronous motor, which is also referred to as a separately excited and / or electrically excited synchronous motor (SSM).

[0006] The motor has a lamination assembly. In principle, this lamination assembly can be envisioned as part of the stator, such that it is constructed, for example, as a stator lamination assembly. However, it has proven particularly advantageous that the lamination assembly is part of the rotor, making it preferably constructed as a rotor lamination assembly. This lamination assembly is also referred to as the first component. In other words, the lamination assembly is the first component of the motor.

[0007] The motor has at least one end plate that abuts the axial end face of the lamination assembly in the axial direction of the motor—the radial direction of the motor extends perpendicular to the axial direction—such that the end plate abuts the lamination assembly in the axial direction of the motor. The axial direction of the motor coincides with the axis of rotation of the motor. The end plate, in particular, is directly disposed on the axial end face, such that the end plate, for example, directly contacts the axial end face. Furthermore, the end plate and the lamination assembly are separately constructed. Therefore, it is preferable that the lamination assembly and the end plate are separately constructed, such that the end plate, for example, is not part of the lamination assembly. In particular, the end plate is directly supported on the axial end face in the axial direction of the motor and therefore in the axial directions of the rotor and stator, such that the end plate directly contacts the axial end face of the lamination assembly. The axial direction of the motor coincides with the axial direction of the stator and the axial direction of the rotor. The end plate is a second component of the motor. In other words, the end plate is also referred to as a second component.

[0008] For example, the end plate can be a star-shaped plate, as disclosed, for example, in DE102018128521A1. In particular, the axial end face of the lamination assembly should be understood as an end face of the lamination assembly whose axial end face lies in a plane that is perpendicular to the axial direction of the motor and therefore extends perpendicular to the axial directions of the rotor and stator.

[0009] For example, an electric motor has at least one winding, which may be a stator winding and therefore a stator winding, or a rotor winding and therefore a rotor winding. For example, especially windings constructed separately from laminations are carried by the laminations, i.e., fixed to the laminations, particularly by means of the winding being wound around at least a portion of the laminations. For example, a magnetic field can be generated by means of the winding, especially by applying a voltage to the winding, by means of which the rotor can be driven and thereby rotated relative to the stator about the motor's axis of rotation.

[0010] For example, the rotor has a shaft, particularly constructed separately from the lamination assembly, also referred to as the rotor shaft. This is especially true when the lamination assembly is a component of the rotor, for example, when the lamination assembly is disposed on the shaft. In particular, the lamination assembly is torsionally connected to the shaft.

[0011] In order to manufacture motors in a particularly advantageous, time-saving and low-cost manner, according to the present invention, the end plate is threadedly connected to and thus fixed to the lamination assembly.

[0012] This invention, particularly during the method of manufacturing an electric motor, achieves advantageous, and especially anti-loss retention of the end plate on the lamination assembly, so that undesirable, excessive relative movement between the end plate and the lamination assembly can be advantageously and simply avoided, especially during the method of manufacturing an electric motor. By threading the end plate to the lamination assembly in this invention, a threaded connection is formed, securing the end plate to the lamination assembly, wherein advantageous, and especially anti-loss retention of the end plate on the lamination assembly can be achieved during the method of manufacturing an electric motor.

[0013] With this fixation, especially during the process of manufacturing an electric motor, the end plate can be advantageously fixed, in particular pre-fixed to the lamination assembly, or fixed in such a way that excessive relative movement between the end plate and the lamination assembly is prevented, wherein undesirable effects, such as the generation of chips and / or other undesirable particles, can be avoided when the end plate is fixed to the lamination assembly by a threaded connection.

[0014] In the method for manufacturing an electric motor, for example, it is specified that in the first step of the method, the end plate is fixed to the lamination assembly by a threaded connection, especially before the winding is fixed to the lamination assembly. In the second step of the method, which immediately follows the first step, the winding is fixed to the lamination assembly, particularly by winding the winding around at least a portion of the lamination assembly. Here, for example, the winding also winds around at least a portion of the end plate, such that the end plate is particularly securely fixed to the lamination assembly, for example, by means of the winding. Therefore, it is desirable to fix, especially to prevent loss, the end plate to the lamination assembly in the first step of the method, where the winding is not yet available. The present invention now makes it possible to fasten the end plate to the lamination assembly in a particularly advantageous manner and particularly simply, without the need for the use of the winding, and especially without undesirable effects. The present invention, particularly in the first step of the method, achieves an advantageous fixation, especially a pre-fixation, of the end plate to the lamination assembly, wherein such fixation of the end plate to the lamination assembly is robust against tolerance fluctuations. Typically, pins made of a metal material such as aluminum are used to secure the end plate to the lamination assembly, particularly in the first step of the method. The pins are inserted into corresponding grooves, where targeted scraping of the pins occurs. For example, the pins are positioned on the lamination assembly such that the grooves are positioned on the end plate. However, chips may be generated during the pin scraping process, which, if not properly addressed, can subsequently affect motor manufacturing. Avoiding this undesirable impact may require costly measures. This invention avoids the generation of such particles or chips, thus eliminating the need for corresponding countermeasures. Therefore, the motor can be manufactured in a time-saving and low-cost manner.

[0015] To enable the manufacture of the motor in a particularly advantageous, time-saving, and low-cost manner, one embodiment of the invention specifies that the end plate and the lamination assembly are threadedly connected by at least one threaded element, which is separately constructed from both the lamination assembly and the end plate, and is also referred to as the first threaded element. Unless otherwise specified, any reference to the threaded element above and below should be understood as the first threaded element. Preferably, the end plate and the lamination assembly are threadedly connected by at least two threaded elements, which are separately constructed from both the lamination assembly and the end plate, i.e., by the first threaded element and by a second threaded element. The foregoing and subsequent descriptions of the first threaded element can also be applied without problem to the second threaded element, and vice versa. In particular, the threaded elements are separately constructed from each other.

[0016] For example, the threaded element can be configured to be tapped and therefore self-tapping, such that, for example, in the aforementioned method for manufacturing an electric motor, the lamination assembly can be provided with an opening in the lamination assembly, wherein, for example, the opening is initially unthreaded. This means that initially no threads are provided or constructed in the opening. For example, the opening can be constructed as a blind hole. This opening can be manufactured, for example, by machining the lamination assembly, especially by drilling, thereby creating the opening, such that the opening is manufactured by machining the lamination assembly, especially by drilling.

[0017] The laminate assembly is composed, for example, of laminated segments, also referred to as single pieces, and is manufactured, for example, by stamping. In the manufacturing of the laminated segments, especially during stamping, the segments can be manufactured particularly simply and therefore time-savingly and cost-effectively, such that the segments form an opening while the laminate assembly is fully formed, thus allowing the opening to be manufactured quickly and cost-effectively. Therefore, it is conceivable that by stamping the laminated segments, the segments are manufactured in such a way that the opening is formed while the laminate assembly is fully formed, thus eliminating the need, for example, to manufacture the opening by machining the laminate assembly. If the threaded element is, for example, constructed for tapping, then, for example, the threaded element rotates relative to the laminate assembly about the screw's rotation axis and is thereby screwed into the opening, whereby the threaded element cuts a thread, especially an internal thread, into the at least unthreaded opening. For this purpose, the threaded element, for example, has a tapped external thread corresponding to the internal thread, by means of which the internal thread is cut into the opening when the threaded element is screwed into the at least unthreaded opening.

[0018] Furthermore, it can be envisioned that, for example, after providing a lamination assembly with an opening, a device—which is separately constructed from the lamination assembly and the corresponding threaded element, and especially also separately constructed from the end plate—cuts out a thread, especially in the form of an internal thread, into the opening and thus creates it in the opening. Subsequently, for example, the threaded element, especially with its external thread corresponding to the internal thread, is screwed into the pre-manufactured internal thread, thereby threading the end plate to the lamination assembly.

[0019] In order to enable the end plate to be particularly advantageously fastened and thus secured, especially pre-secured, to the lamination assembly, a further configuration of the invention specifies that a threaded element passes through a preferably unthreaded through opening in the end plate, particularly in the axial direction of the motor, where the radial direction of the motor extends perpendicular to the axial direction. Here, the axial direction of the motor coincides with the axis of rotation of the motor.

[0020] To enable particularly time-saving and low-cost manufacturing of the motor, a further configuration of the invention specifies that the threaded element is directly screwed into the lamination assembly. For this purpose, the threaded element has a first thread, configured, for example, as an external thread, which is directly screwed into the lamination assembly, particularly into a second thread corresponding to the first thread and configured, for example, as an internal thread. Thus, the number of motor parts, and therefore cost and weight, can be kept within a particularly low range.

[0021] In a further, particularly advantageous configuration of the invention, the lamination assembly has an internal thread, into which the corresponding external thread of the threaded element is directly screwed, thereby directly screwing the threaded element into the lamination assembly. This allows for a particularly advantageous direct threaded connection, enabling the end plate to be advantageously fastened and thus secured, especially pre-secured, to the lamination assembly.

[0022] It has proven particularly advantageous that the laminate assembly is constructed or manufactured according to a so-called back-coating process. This means that the laminate assembly preferably has the aforementioned laminate segments and back coating, the laminate segments being interconnected by means of the back coating, and in particular, the laminate segments being bonded to and thus interconnected by means of the back coating. Thus, the laminate assembly is constructed as at least substantially solid blocks into which threaded elements can be screwed, and in particular, by means of: for example, by directly screwing the threaded elements into the laminate assembly to create internal threads, and the internal threads can be advantageously created by means of the aforementioned device.

[0023] A second aspect of the invention relates to a method for manufacturing an electric motor, particularly an electric motor for a motor vehicle, also simply referred to as a vehicle, according to the first aspect of the invention. In this method, a lamination assembly is provided as a first component. In this method, at least one end plate, separately constructed from the lamination assembly, is provided as a second component. In this method, the end plate is disposed on the axial end face of the lamination assembly such that the end plate abuts the axial end face of the lamination assembly in the axial direction of the motor, and thus, in particular, abuts the entire lamination assembly.

[0024] In order to manufacture the motor in a particularly advantageous manner, especially in a particularly time-saving and low-cost way, the second aspect of the invention specifies that the end plate is threadedly connected to and thereby fixed to the lamination assembly. The advantages and advantageous configurations of the first aspect of the invention should be regarded as the advantages and advantageous configurations of the second aspect of the invention, and vice versa.

[0025] In order to manufacture the motor in a particularly simple and therefore time-saving and low-cost manner, in one embodiment of the second aspect of the invention, the end plate and the lamination assembly are threadedly connected by at least one threaded element, which is separately constructed from the lamination assembly and the end plate.

[0026] It has proven particularly advantageous that the threaded element is constructed to be tapping and therefore self-tapping, wherein the threaded element is directly screwed into the initially unthreaded opening of the lamination assembly, thereby cutting the internal thread of the lamination assembly into the initially unthreaded opening during the process of screwing the threaded element into the initially unthreaded opening. As a result, the motor can be manufactured in a particularly time-saving and low-cost manner.

[0027] In order to make the manufacture of the motor particularly simple, a further configuration of the second aspect of the invention specifies that, before the end plate is threadedly connected to the lamination assembly by a threaded element, an internal thread is cut into at least an unthreaded opening of the lamination assembly by means of a device—which is separately constructed from the lamination assembly, separately from the end plate, and separately from the threaded element—and then the threaded element is directly screwed into the internal thread, thereby threading the end plate to the lamination assembly by the threaded element.

[0028] A third aspect of the invention relates to a rotor for an electric motor in a motor vehicle, the rotor having: a lamination assembly as a first member; and at least one end plate as a second member, the end plate being adjacent to the axial end face of the lamination assembly in the axial direction of the rotor and thus in the axial direction of the motor and thus particularly adjacent to the entire lamination assembly, and being disposed on the axial end face and separately constructed from the lamination assembly.

[0029] In order to manufacture the rotor and thus the motor in a particularly advantageous manner, especially in a particularly time-saving and low-cost way, the third aspect of the invention specifies that the end plate is threadedly connected to and thus fixed to the lamination assembly. The advantages and advantageous configurations of the first and second aspects of the invention should be regarded as the advantages and advantageous configurations of the third aspect of the invention, and vice versa.

[0030] A motor vehicle, which may also be simply referred to as a vehicle, is also disclosed, preferably configured as an automobile, especially a passenger car. This motor vehicle has at least one motor according to the first aspect of the invention, and can be electrically driven, especially purely, by means of this motor. The advantages and advantageous configurations of the first, second, and third aspects of the invention should be considered as advantages and advantageous configurations of this motor vehicle, and vice versa. Attached Figure Description

[0031] Further details of the invention will become apparent from the following description of preferred embodiments taken in conjunction with the accompanying drawings. In the drawings: Figure 1 A schematic and sectional perspective view of an electric motor for a motor vehicle is shown in part. Figure 2 A schematic longitudinal sectional view of the rotor of the motor is shown in partial view; and Figure 3 A partial exploded view of the rotor is shown; Figure 4 A schematic top view showing the laminations of the rotor; and Figure 5 A schematic perspective view of the stacked assembly is shown in part.

[0032] In the accompanying drawings, identical or functionally identical elements are labeled with the same reference numerals. Detailed Implementation

[0033] Figure 1 A partially schematic and sectional perspective view shows the motor 1 of a motor vehicle, which can also be simply referred to as a vehicle, preferably constructed as an automobile, especially a passenger car. The motor 1 has... Figure 1 The stator 2 and rotor 3 are shown partially and particularly schematically in the middle. The rotor can be driven by means of the stator 2 and thus can rotate relative to the stator 2 about the motor rotation axis 4. The motor 1 can provide driving torque through the rotor 3 for driving motor vehicles, especially in a purely electric manner.

[0034] The rotor 3, and therefore the motor 1, has a lamination assembly 5, which is also referred to as the first component, or in other words, the rotor 3 and therefore the first component of the motor 1. The lamination assembly 5 has, in particular, individual lamination segments, which are also referred to as single pieces. The lamination assembly 5 is composed of, and in particular, assembled from, these lamination segments. For example, the lamination assembly 5 also has a backing paint, by which the lamination segments are interconnected, in particular, bonded together and thus connected to each other. Therefore, for example, the lamination assembly 5 is manufactured according to a so-called backing paint process.

[0035] The rotor 3, and therefore the motor 1, also has an end plate 6, which is separately constructed from the lamination assembly 5. In the embodiment shown in the figures, this end plate is constructed as a star-shaped plate. The end plate 6 is a second component of the motor 1. This means that the end plate 6 is also referred to as the second component. The end plate 6 abuts the axial end face AS1 in the axial direction of the rotor 3, and therefore in the axial direction of the motor 1, and therefore particularly abuts the lamination assembly 5. The axial direction of the rotor 3—the radial direction of the rotor 3 extends perpendicular to the axial direction of the rotor 3, and therefore perpendicular to the axial direction of the entire motor 1—coincides with the rotation axis 4 of the motor. The axial direction of the rotor 3, and therefore the axial direction of the motor 1—the radial direction of the motor 1 extends perpendicular to the axial direction of the motor—is indicated by double arrow 11. The radial direction of the rotor 3, and therefore the radial direction of the motor 1, is indicated by double arrow 7. The end plate 6 is disposed on the axial end face AS1 of the lamination assembly 5, and here is particularly directly supported on the axial end face AS1, such that, for example, the end plate 6 directly contacts the axial end face AS1 of the lamination assembly 5.

[0036] In order to manufacture the rotor 3 and thus the motor 1 in a particularly advantageous manner, the end plate 6 is threadedly connected to and thus fixed to the lamination assembly 5.

[0037] In the embodiment shown in the accompanying drawings, a plurality of threaded elements 8 are provided, which are separately constructed from the lamination assembly 5 and from the end plate 6, and are configured as screws. The end plate 6 is threadedly connected to the lamination assembly 5 by means of the threaded elements 8. Preferably, at least two or exactly two threaded elements 8 are provided. For example, at least three or exactly three threaded elements 8 are provided. In particular, more than two, especially more than three, threaded elements 8 can be provided. For example, at least six or exactly six or more six threaded elements 8 are provided to thread the end plate 6 to the lamination assembly 5. In the embodiment shown in the accompanying drawings, exactly six threaded elements 8 are provided, and the end plate 6 is threadedly connected to the lamination assembly 5 by means of these threaded elements.

[0038] from Figures 1 to 5It can be clearly seen that each threaded element 8 is correspondingly associated with a corresponding opening 9 of the lamination group 5, wherein each opening 9 is constructed, for example, as a corresponding blind hole. Each opening 9 is constructed in the lamination group 5. Each opening 9 is constructed in the lamination group 5 and thus manufactured, for example, by machining the lamination group 5, especially by drilling, such that each opening 9 is manufactured, for example, by machining the lamination group 5, especially by drilling. Furthermore, it is conceivable that the lamination segments of the lamination group 5 are manufactured, or have been manufactured, especially by stamping, such that the lamination segments form the corresponding opening 9 in the fully formed state of the lamination group 5, especially without manufacturing the corresponding opening 9 by machining the lamination group 5. In other words, the lamination segments are preferably manufactured, or have been manufactured, especially by stamping, such that by assembling the lamination segments into the lamination group 5, the lamination segments form the corresponding opening 9 in the fully formed state of the lamination group 5.

[0039] Furthermore, each threaded element 8 is correspondingly associated with a through opening 10 of the end plate 6, wherein each threaded element 8 passes completely through the corresponding through opening 10, and particularly in the axial direction of the rotor 3 and thus in the axial direction of the motor 1. Preferably, the corresponding through opening 10 is unthreaded, such that it is preferable that no threads are provided in the corresponding through opening 10.

[0040] Each threaded element 8 has a corresponding first thread, which is configured here as an external thread. In principle, it is conceivable that each threaded element 8, especially its corresponding external thread, is configured for tapping, such that, for example, in a method for manufacturing the rotor 3, the lamination assembly 5 is provided with an initially unthreaded opening 9. For example, the method for manufacturing the rotor 3 is a component of the method for manufacturing the entire motor 1. In this method, for example, each threaded element 8 is directly screwed into its respective corresponding and initially unthreaded opening 9 of the lamination assembly 5, whereby each threaded element 8, in its corresponding, associated, and initially unthreaded opening 9, is cut with a separate internal thread corresponding to the corresponding external thread of the corresponding threaded element 8.

[0041] Alternatively, it can be envisioned that in the method for manufacturing the rotor 3, before the end plate 6 is threadedly connected to the lamination assembly 5 by means of the threaded element 8, an internal thread is cut into the corresponding, initially unthreaded opening 9 of the lamination assembly 5 by means of a device—which is separately constructed from the lamination assembly 5, the end plate 6, and the threaded element 8. After the corresponding internal thread is cut into the corresponding opening 9, the corresponding threaded element 8, especially its corresponding external thread, is screwed into the corresponding internal thread of the corresponding opening 9, which was previously made by means of the device, thereby threading the end plate 6 to the lamination assembly 5.

[0042] The rotor 3, for example, has a winding not visible in the accompanying drawings, which is also referred to as the rotor winding. When the rotor 3 is fully manufactured, the winding is fixed to and thus carried by the lamination assembly 5. Specifically, the winding is fixed to the lamination assembly 5 such that it is wound around at least a portion of the lamination assembly 5. Furthermore, for example, the winding is wound around at least a portion of the end plate 6. In the method of manufacturing the rotor 3, for example, it is specified that when the end plate 6 is threaded to the lamination assembly 5, the winding is not yet fixed to the lamination assembly 5, and therefore not yet wound around the lamination assembly 5 or the end plate 6. Preferably, only after the end plate 6 is threaded to the lamination assembly 5 is the winding wound around at least a portion of the lamination assembly 5, and preferably also at least a portion of the end plate 6, thereby fixing it to the lamination assembly 5 and, in particular, also to the end plate 6. By fixing the winding to the lamination assembly 5 and the end plate 6 in this way, the end plate 6 and the lamination assembly 5 are particularly securely connected.

[0043] Each threaded element 8 forms a corresponding threaded connection, by which the end plate 6 is threadedly connected to and thus fixed to the lamination assembly 5. It can be seen that the threaded connection is used to fasten and thus fix, in particular pre-fix, the end plate 6 to the lamination assembly 5 without the aid of windings. Thus, before the windings are fixed to the lamination assembly 5 and the end plate 6, the end plate 6 can be prevented from falling off and is therefore pre-fixed, especially in that relative movement between the end plate 6 and the lamination assembly 5 is prevented.

[0044] Figure 2 Rotor 3 is shown in a partial schematic longitudinal sectional view. From Figure 2 The two threaded elements in the threaded element 8 and the opening 9 belonging to and thus associated with the lamination group 5 and the unthreaded through opening 10 belonging to and associated with the end plate 6 can be seen particularly clearly.

[0045] Figure 3 A schematic exploded view of rotor 3 is shown, from Figure 3 The stacked plate group 5, end plate 6, and threaded element 8 can be seen very clearly.

[0046] Figure 4 The stacked sheet group 5 is shown in a schematic top view. From Figure 4 The opening 9 of the lamination 5 can be seen particularly clearly, in which the internal thread can be advantageously cut into the opening 9, and can be selectively cut out, for example, by means of the thread element 8 or by means of the aforementioned device.

[0047] Figure 5 The stacked sheet assembly 5 is shown in a partial schematic perspective view. Figure 5 One of the openings in the opening 9 can be seen particularly clearly.

[0048] List of reference numerals

[0049] 1 motor

[0050] 2 stators

[0051] 3 rotors

[0052] 4. Motor rotation axis

[0053] 5-piece stack

[0054] 6-end plate

[0055] 7 Double Arrows

[0056] 8-thread component

[0057] 9 openings

[0058] 10 through openings

[0059] 11 Double Arrows

[0060] AS1 axial end face

Claims

1. A motor (1) for a motor vehicle, the motor having: a lamination assembly (5) as a first component; and at least one end plate (6) as a second component, the end plate being adjacent to and disposed on the axial end face (AS1) of the lamination assembly (5) in the axial direction (11) of the motor (1) and being separately constructed from the lamination assembly (5), characterized in that, The end plate (6) is threadedly connected to and thus fixed to the lamination group (5).

2. The motor (1) according to claim 1, characterized in that, The end plate (6) and the lamination group (5) are threadedly connected by at least one threaded element (8), which is separately constructed from the lamination group (5) and the end plate (6).

3. The motor (1) according to claim 2, characterized in that, The threaded element (8) passes through the through opening (10) of the end plate (6).

4. The motor (1) according to claim 3, characterized in that, The threaded element (8) is screwed directly into the lamination group (5).

5. The motor (1) according to claim 4, characterized in that, The lamination group (5) has an internal thread, and the external thread of the threaded element (8) corresponding to the internal thread is directly screwed into the internal thread, thereby the threaded element (8) is directly screwed into the lamination group (5).

6. A method for manufacturing an electric motor (1) for use in a motor vehicle, wherein: - Provide a stacked assembly (5) as the first component; - Provide at least one end plate (6) as a second component, which is separately constructed from the stacked assembly (5); and - The end plate (6) is placed on the axial end face (AS1) of the lamination group (5) such that the end plate (6) is adjacent to the axial end face (AS1) of the lamination group (5) in the axial direction (11) of the motor (1). Its features are, The end plate (6) is threadedly connected to and thus fixed to the lamination group (5).

7. The method according to claim 6, characterized in that, The end plate (6) and the lamination group (5) are threadedly connected by at least one threaded element (8), which is separately constructed from the lamination group (5) and the end plate (6).

8. The method according to claim 7, characterized in that, The threaded element (8) is configured to tap, wherein the threaded element (8) is directly screwed into the initial unthreaded opening (9) of the lamination group (5), and thereby the internal thread of the lamination group (5) is cut in the initial unthreaded opening (9) during the process of screwing the threaded element (8) into the initial unthreaded opening (9).

9. The method according to claim 7, characterized in that, Before the end plate (6) is threadedly connected to the lamination group (5) via the threaded element (8), an internal thread is cut into the initial unthreaded opening (9) of the lamination group (5) by means of a device that is separately constructed from the lamination group (5), the end plate (6), and the threaded element (8). The threaded element (8) is then directly screwed into the internal thread, thereby the end plate (6) is threadedly connected to the lamination group (5) via the threaded element (8).

10. A rotor (3) for a motor (1) of a motor vehicle, the rotor having: a lamination assembly (5) as a first member; and at least one end plate (6) as a second member, the end plate being adjacent to and disposed on the axial end face (AS1) of the lamination assembly (5) in the axial direction (11) of the rotor (3) and being separately constructed from the lamination assembly (5), characterized in that, The end plate (6) is threadedly connected to and thus fixed to the lamination group (5).

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