Rotor for an axial flux machine, in particular of a motor vehicle, as well as axial flux machine

Abstract

The invention relates to a rotor (10) for an axial flux machine, with permanent magnets (12) which are held on a support (18) of the rotor (10) formed separately from the permanent magnets (12), wherein the support (18) has at least a first support area (TB1) formed from a first material formed as a fiber composite material and a second support area (TB2) formed from a second material different from the first material and electrically non-conductive, which is arranged between the respective permanent magnet (12) and the first support area (TB1).

Description

[0001] The invention relates to a rotor for an axial flux machine, in particular of a motor vehicle, according to the preamble of claim 1. Furthermore, the invention relates to an axial flux machine for a motor vehicle, comprising at least one such rotor.

[0002] DE 10 2021 105 499 B4 discloses a rotor for an axial flux machine. CN 107979256 A1 discloses an electrical machine as known. DE 10 2019 216 844 A1 discloses an axial flux machine. Furthermore, EP 3 506 463 A1 discloses an integrated flywheel energy storage device.

[0003] The object of the present invention is to create a rotor for an axial flux machine, in particular for a motor vehicle, as well as an axial flux machine, so that a particularly efficient operation of the axial flux machine can be realized.

[0004] This problem is solved by a rotor with the features of claim 1 and by an axial flux machine with the features of claim 10. Advantageous embodiments with expedient further developments of the invention are specified in the remaining claims.

[0005] A first aspect of the invention relates to a rotor for an axial flux machine, in particular for a motor vehicle. This means that the motor vehicle, preferably designed as a motor vehicle, especially a passenger car, and also simply referred to as a vehicle, in its fully manufactured state comprises the axial flux machine and can be driven electrically by means of the axial flux machine, in particular purely electrically. The axial flux machine is also referred to as an axial flux motor (AFM). In its fully manufactured state, the axial flux machine comprises the rotor and, for example, a stator by means of which the rotor can be driven and thereby rotated about a machine axis of rotation relative to the stator. The rotor, whose axial direction coincides with the machine axis of rotation, has permanent magnets, which are also simply referred to as magnets.Furthermore, the rotor, whose radial direction is perpendicular to the axial direction of the rotor and thus perpendicular to the machine's axis of rotation, has a support structure separate from the permanent magnets, which is also referred to as the support device or support structure. The permanent magnets are held to the support structure, in particular in such a way that relative movements between the respective permanent magnets and the support structure are prevented.

[0006] In order to achieve particularly low-loss and thus particularly efficient operation of the axial flux machine and consequently of the motor vehicle as a whole, the invention provides that the support has at least or exactly one first support section, which is formed from a first material. The first material is a fiber-reinforced composite material, which is also referred to as the first fiber-reinforced composite material. When the fiber-reinforced composite material is mentioned before and below, this refers, unless otherwise specified, to the first fiber-reinforced composite material. Thus, the first material is the first fiber-reinforced composite material. Furthermore, the support has a second support section, which is formed from a second material that differs from the first material. The second material, in particular the entire second material, is electrically non-conductive and therefore a non-conductor.A non-conductor is a material whose electrical conductivity is less than 10. -8 S*cm -1The second material, and preferably the entire second material, is magnetically non-conductive. This means, in particular, that the second material, and preferably the entire second material, does not interact with any magnetic field provided or that could be provided by the respective permanent magnet. The second support area is arranged between the respective permanent magnets and within the first support area. This avoids undesirable eddy current paths and thus excessive eddy current losses, enabling particularly efficient and therefore high-efficiency operation of the axial flux machine.In order to achieve particularly efficient operation, in one embodiment of the invention it is provided that the second support area is arranged in the radial direction of the rotor between the respective permanent magnets and the first support area, in particular such that the respective permanent magnet is overlapped by the first support area in the radial direction of the rotor outwards and at least in the first support area, in particular completely.

[0007] It has proven particularly advantageous if the first and second support areas form a ring of the support, also referred to as the outer ring, wherein the respective permanent magnet is supported at least indirectly, and in particular directly, on the ring in the radial direction of the rotor. This avoids excessive losses, thus enabling particularly efficient operation.

[0008] To achieve particularly efficient operation, it has proven especially advantageous if the respective permanent magnet is supported radially outwards in the rotor direction, particularly exclusively, via the second support area on the first support area. This prevents excessive eddy current losses.

[0009] In order to achieve a particularly advantageous and efficient operation of the axial flux machine, a further embodiment of the invention provides that the first fiber composite material is a carbon fiber reinforced plastic (CFRP) which has a first matrix and first reinforcing fibers embedded in the first matrix.

[0010] Another embodiment is characterized by the fact that the second material is a different fiber-reinforced plastic than the first. This allows for high stiffness and low weight of the rotor in a particularly space-saving manner, thus enabling particularly efficient operation of the axial flux machine.

[0011] To achieve particularly efficient operation of the axial flux machine and the motor vehicle, a further embodiment of the invention provides that the second fiber-reinforced plastic is a fiber-reinforced plastic, which is formed, in particular completely and / or exclusively, from a matrix also referred to as a second matrix and reinforcing fibers, also referred to as second reinforcing fibers, embedded in the second matrix. Where the term "matrix" is used below and above, this refers to the second matrix unless otherwise specified. Where the term "reinforcing fibers" is used below and above, this refers to the second reinforcing fibers unless otherwise specified. The matrix is ​​formed, in particular completely and / or exclusively, from a plastic. The reinforcing fibers are also referred to as fibers.

[0012] In particular, it is conceivable that the carbon fiber reinforced plastic is formed entirely and / or exclusively from the first matrix and the first reinforcing fibers.

[0013] In order to avoid excessive losses, especially eddy current losses, a further embodiment of the invention provides that the matrix, in particular the entire matrix, as well as the reinforcing fibers, in particular all, embedded in the matrix are made of an electrically non-conductive material, i.e., a non-conductor.

[0014] To achieve particularly efficient operation, a further embodiment of the invention provides that the electrically non-conductive material from which at least some of the reinforcing fibers, and thus at least some of the reinforcing fibers, are formed, is or comprises aramid. In other words, it is conceivable that at least some of the reinforcing fibers are aramid fibers. It is conceivable that the reinforcing fibers, and in particular all of them, embedded in the matrix are aramid fibers and are thus formed from aramid.

[0015] It has proven particularly advantageous if the electrically non-conductive material from which at least some of the reinforcing fibers, for example, the second reinforcing fibers, are formed, is or comprises a ceramic. Thus, it is conceivable that the second reinforcing fibers are ceramic fibers. In particular, it is conceivable that the reinforcing fibers, especially all of them, embedded in the matrix are ceramic fibers. This can prevent excessive eddy current losses, thereby enabling particularly efficient operation.

[0016] Another embodiment is characterized in that the electrically non-conductive material from which the matrix, in particular the entire and / or complete matrix, is formed, is or comprises an epoxy resin. This enables particularly low-loss and therefore particularly efficient operation of the axial flux machine.

[0017] The axial flux machine is an electric machine that can, for example, provide drive torques via its rotor for the, in particular, purely electric propulsion of the motor vehicle.

[0018] In order to achieve a particularly efficient operation of the axial flux machine, it is further provided in the invention that the electrically non-conductive material from which the, in particular complete and / or entire, matrix is ​​formed is a polyester resin and / or vinyl resin and / or polyamide.

[0019] It is conceivable that the support has a second ring, particularly an inner one, also referred to as a support ring, against which the permanent magnets are supported at least indirectly, and in particular directly, in the radial direction of the rotor. It is conceivable that the first support section and the second support section together form the second ring, and thus the support ring, so that, for example, each permanent magnet is supported in the radial direction of the rotor, viewed inwards, by the second support section and a first support section. Furthermore, it is conceivable that the support ring, with respect to the first and second support sections, is formed exclusively from the first or exclusively from the second support section.

[0020] It is conceivable that the support also includes intermediate webs, which are arranged between the permanent magnets in the circumferential direction of the rotor, such that the permanent magnets and the intermediate webs are arranged alternately in the circumferential direction of the rotor. It is conceivable that each intermediate web is formed by the first support section and the second support section, so that, for example, the respective permanent magnet is supported in the circumferential direction of the rotor and the mediation of the second support section to the first support section. Furthermore, it is conceivable that each intermediate web, with respect to the first and second support sections, is formed exclusively by the first support section or exclusively by the second support section.

[0021] Preferably, the support ring, the outer ring, and the intermediate webs are formed integrally, i.e., from a single piece. Thus, it is preferably provided that the support ring, the outer ring, and the intermediate webs are not formed separately and connected to one another, but rather the support ring, the outer ring, and the intermediate webs are formed integrally, i.e., from a single piece, thus formed as a monoblock.

[0022] A second aspect of the invention relates to an axial flux machine for a motor vehicle, also referred to simply as a vehicle, wherein the axial flux machine according to the second aspect of the invention comprises at least or exactly one rotor according to the first aspect of the invention. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention and vice versa.

[0023] Since the second support area is arranged between the first support area and the two permanent magnets, the second support area is a layer, also referred to as a layer, which is, in particular, completely electrically non-conductive and preferably also, in particular, completely magnetically non-conductive. Especially when the fiber-reinforced plastic is the aforementioned carbon fiber-reinforced plastic from which the first support area is formed, the first support area is electrically conductive and, for example, also magnetically conductive. However, since the second support area is arranged between it and the two permanent magnets, excessive losses, in particular eddy current losses, can be avoided, thus enabling particularly efficient operation of the axial flux machine.

[0024] The rotor is, for example, a disc rotor or a rotor disk. In other words, the rotor is, for example, disk-shaped. For example, the axial flux machine, in its fully manufactured state, has a double-rotor arrangement or a double-stator arrangement. To achieve a particularly high torque-power ratio, the axial flux machine preferably, in its fully manufactured state, has a double-rotor arrangement, which includes rotor disks, wherein, for example, the aforementioned rotor can be one of the rotor disks. The respective rotor disk includes, for example, the carrier and the permanent magnets. The rotor includes, for example, a magnet cassette, wherein, for example, the carrier is the magnet cassette, or wherein, for example, the permanent magnets and / or the carrier form the magnet cassette.Such a disc-shaped rotor design can, for example, enable novel drive concepts for motor vehicles. Due to space constraints, the outer diameter of the rotor is typically relatively limited, especially for coaxial applications in passenger cars. Therefore, and for efficiency reasons, increasing the effective range of the axial flux machine is a goal. For example, the permanent magnets are hard magnets, particularly laminated hard magnets. The aforementioned ring of the support can absorb the centrifugal forces of the permanent magnets, especially during operation of the axial flux machine, and consequently ensure that the permanent magnets are held against, and in particular within, the magnet cassette.In particular, when the carrier, and thus the ring, is made of the aforementioned carbon fiber-reinforced plastic, such that the first reinforcing fibers of the carbon fiber-reinforced plastic are carbon fibers, the carbon fibers of the carrier, especially of the ring, are electrically conductive. This, if no countermeasure is taken, can lead to eddy currents within the axial flux machine, which is used, for example, as an electric traction machine, as a result of an alternating magnetic field. These eddy currents occur both within the carbon fiber-reinforced plastic and, through an electrical connection, the magnets (also called magnetic segments) via the carbon fibers also induce eddy current paths in the permanent magnet.This can lead to a significant increase in rotor losses, which can be detrimental both to efficiency and magnetic performance, potentially resulting in earlier power reduction due to lower remanence and retarding field stability. Power reduction refers to limiting the maximum power output of the axial flux machine, also known as an electric machine, and reducing it compared to a state where power reduction does not occur. The invention now makes it possible to reduce eddy current losses in the permanent magnets compared to conventional solutions, thereby increasing the efficiency of the axial flux machine.

[0025] To avoid excessive eddy current losses, for example, the respective permanent magnet is laminated, i.e., designed as a laminated magnet, in particular such that the respective magnet segments of the respective permanent magnet are arranged successively and thus on top of each other in the radial direction of the rotor, wherein, for example, the magnet segments of the respective permanent magnet are formed separately from each other and connected to each other. For example, the respective magnet segments of the respective permanent magnet are bonded together and thus connected to each other.

[0026] In particular, the respective magnet segments of the respective permanent magnet are preferably glued together and thereby connected to each other by means of an adhesive, wherein the adhesive is preferably electrically non-conductive, i.e. a non-conductor.

[0027] It is conceivable that the support has a first support element comprising the first support section and the second support section, and preferably the first ring and / or the second ring and / or intermediate webs. It is also conceivable that the support has a second support element, which is, for example, a laminated core made of sheet metal, particularly electrical steel. It is conceivable that the support elements are designed separately from one another and connected to each other, particularly in such a way that relative movements between the support elements are prevented. For example, in order to absorb the high centrifugal forces of the permanent magnets resulting from high rotor speeds, the support, particularly the ring, may be mounted on the permanent magnets with an interference fit or a preload.The invention avoids excessive rotor losses because the second support area is positioned between the respective permanent magnets and the first support area. To mount the ring to the permanent magnets, or vice versa, the ring is expanded, particularly radially outwards, which stretches the carbon fiber reinforced plastic. This can cause at least some of the carbon fibers to tear, resulting in loose, conductive fiber ends. When the expanded ring is joined to the permanent magnets or the magnetic cassette, the ring is stripped from the cassette. This can damage or remove the first matrix, exposing conductive fibers of the carbon fiber reinforced plastic that can come into direct contact with the respective permanent magnets.This can now be avoided by the invention, since in the invention the second support area is arranged between the respective permanent magnets and the first support area, particularly in the ring. Any damage to the first matrix of the carbon fiber reinforced plastic would not expose any electrically conductive fibers and would prevent short circuits of the magnets. The second support area, which functions or is designed as an electrically non-conductive layer and forms a laminate within the first support area, particularly by or in such a way that the support areas are in direct contact with each other at least or exclusively in the radial direction of the rotor, can, for example, be subsequently attached to a ring (outer ring) formed, in particular from the carbon fiber reinforced plastic, using SMC (sheet-metal compounding), or it can be laid as the first layer in a laminate structure. Existing winding processes can be adapted for this purpose.

[0028] The invention allows at least the following advantages to be realized: - in the rotor as a result of the alternating magnetic field during operation of the axial flux machine - No induction of additional eddy currents in the magnets through electrical connection of the carbon fibers with the individual magnet segments - Improved magnetic performance due to reduced heat generation resulting from decreased eddy current losses in the rotor - Increasing the efficiency of the axial flux machine by reducing rotor losses - Cost reduction resulting from a reduced proportion of rare earth elements in the permanent magnets through a reduction in coercive field strength due to lower operating temperatures of the axial flux machine. - Reduction of the complexity of the assembly process - Reduction of processing times and consequently - Reduction of rejects due to reduced destruction of layers in the ring during its assembly process, especially given that damaged layers of the carbon fiber reinforced plastic can cause short circuits in the axial flux machine due to loose fibers.

[0029] It is conceivable that the first and second reinforcing fibers are made of different materials. In particular, the first reinforcing fibers could be the aforementioned carbon fibers. Thus, it is conceivable that the first reinforcing fibers are of a first type and the second reinforcing fibers are of a second type, different from the first. The aforementioned types are also referred to as fiber types. To manufacture the ring (outer ring), for example, the two different fiber types can first be wound around the permanent magnets and then coated with a potting compound and fixed to each other at an angle, particularly at the permanent magnets, using the potting compound. Alternatively, the ring can be manufactured directly as a hybrid ring made of two different fibers. Preferably, the potting compound is electrically non-conductive.In particular, it is conceivable that the potting compound forms the first matrix and / or the second matrix. It is conceivable that the first matrix and the second matrix are formed from different materials, such that, for example, the first matrix is ​​formed from a first material and the second matrix from a second material different from the first, or the first matrix and the second matrix are formed from the same material, which is preferably a plastic. For example, the first material is a plastic and, for example, the second material is a plastic.

[0030] Further advantages, features, and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing. The features and combinations of features mentioned above in the description, as well as those mentioned below in the figure description and / or shown in the figures alone, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention.

[0031] The drawing shows in: Fig. 1. A schematic front view of a rotor for an axial flux machine, in particular of a motor vehicle; and Fig. 2. A schematic sectional view of an outer ring of the rotor.

[0032] In the figures, identical or functionally equivalent elements are provided with the same reference symbols.

[0033] Fig. Figure 1 shows a schematic front view of a rotor 10 for an axial flux machine, also known as an axial flux motor, of a motor vehicle, also referred to simply as a vehicle. The axial flux machine, also called an electric machine and designed as such, in its fully manufactured state comprises a rotor 10 and a stator, by means of which the rotor 10 can be driven and thus rotated about a machine axis of rotation relative to the stator. For example, the rotor 10 is disk-shaped and thus a rotor disk. It is conceivable that the axial flux machine can have a complete rotor, which can be driven by means of the stator and thus rotated about the machine axis of rotation relative to the stator. For example, the axial flux machine can provide drive torque via its complete rotor for, in particular, purely electric, propulsion of the motor vehicle.The overall rotor includes, for example, a rotor 10, in particular as the first rotor disk. Furthermore, it is conceivable that the overall rotor has at least or exactly two rotor disks, namely the aforementioned first rotor disk and a second rotor disk. It is conceivable that the rotor disks, which are also referred to as rotor elements, are at least partially spaced apart from each other in the axial direction of the axial flux machine and thus of the respective rotor disk. It is conceivable that at least a part of the stator is arranged between the rotor disks in the axial direction of the axial flux machine, in particular such that the first rotor disk, viewed in the axial direction of the axial flux machine towards the second rotor disk, and the second rotor disk, viewed in the axial direction of the axial flux machine towards the first rotor disk, are each at least partially overlapped and thus covered by the aforementioned part of the stator.It is conceivable that the rotor disks are designed separately from one another and, in particular, permanently and rotationally fixed to each other. As described above, rotor 10 can be the first rotor disk, and the preceding and following explanations regarding the first rotor disk can readily be applied to the second rotor disk and vice versa.

[0034] The rotor 10 has permanent magnets 12, which, for example, form a magnetic cassette 14 of the rotor 10. Each permanent magnet 12 is simply referred to as a magnet, and the magnetic cassette 14 is simply referred to as a cassette. For example, each permanent magnet 12 has a segmented structure. This means that each permanent magnet 12 has, for example, individual magnetic segments, with the individual magnetic segments of each permanent magnet 12 being arranged successively and one above the other in the radial direction of the rotor 10, whose axial direction coincides with the machine's axis of rotation. It is conceivable that the magnetic segments of each permanent magnet 12 are formed separately from one another and connected to each other, particularly by means of an adhesive.

[0035] The rotor 10, whose radial direction is perpendicular to the axial direction of the rotor 10 and thus perpendicular to the machine's axis of rotation, also has a carrier 18 formed separately from the permanent magnets 12, on which the permanent magnets 12 are held and thereby fixed, in particular in such a way that relative movements between the respective permanent magnet 12 and the carrier 18 are prevented. For example, the respective magnet segment of the respective permanent magnet, and thus the respective permanent magnet 12, is made of a metallic material.

[0036] The support 18, for example, has a first support element 19 and a second support element. The first support element 19 is formed from a first fiber-reinforced plastic, which is also simply referred to as the first fiber composite. The first fiber-reinforced plastic is a carbon fiber reinforced plastic, which has a first matrix and first reinforcing fibers embedded in the first matrix. The first reinforcing fibers, in particular all of them, are carbon fibers. In other words, the first fiber-reinforced plastic is the aforementioned carbon fiber reinforced plastic (CFRP), which is formed, in particular entirely, from the first matrix material and the first reinforcing fibers embedded in the first matrix, which are simply also referred to as the first fibers.The first matrix, in particular its entirety, is made entirely of a plastic, so the first matrix is ​​also referred to as the first plastic matrix.

[0037] The second support element is, for example, a laminated core also referred to as an electrical steel core, which is also formed as an electrical steel sheet, or simply as a sheet metal sheet. Preferably, the first support element 19 and the second support element are formed separately from one another and connected to each other, in particular in such a way that relative movements between the first support element 19 and the second support element are prevented.

[0038] Looks especially good Fig. It is evident from Figure 1 that the first support element 19, and thus the support 18, has an inner, preferably central, and most preferably middle support ring 20 as the first ring, on which the permanent magnets 12 are supported at least indirectly, and in particular directly, in the radial direction of the rotor 10. Furthermore, the first support element 19, and thus the support 18, has an outer ring 22 as the second ring, on which the permanent magnets 12 are supported at least indirectly, and in particular directly, in the radial direction of the rotor 10. In this case, the rings are arranged coaxially to each other. It is evident that the first ring, also referred to as the inner ring, and thus the support ring 20, has an opening 24, preferably central and in particular a through-opening.For example, at least one section of the rotor shaft of the complete rotor can be arranged or is arranged in the opening 24, such that, for example, the rotor shaft, which is formed separately from the support 18 and is also simply referred to as the shaft, can be connected or is connected to the support 18 in a rotationally fixed manner, particularly over its aforementioned section of length. In particular, the complete rotor can provide the drive torques via the rotor shaft.

[0039] The support 18, in particular the support element 19, also has intermediate webs 26 which are arranged between the permanent magnets 12 in the circumferential direction of the rotor 10, which runs around the axial direction of the rotor 10 and thus around the machine's axis of rotation, such that the permanent magnets 12 and the intermediate webs 26 alternate along the circumferential direction of the rotor 10. It is also apparent that the intermediate webs 26, which are also simply referred to as webs, are arranged between the rings, particularly in the radial direction of the rotor 10, with the rings being connected to each other via the webs.

[0040] In order to achieve a particularly efficient operation of the axial flux machine 10, the support 18, as shown from Fig. As can be seen in Figure 2, a first support area TB1 and a second support area TB2 are formed. The first support area TB1 is made of the aforementioned first fiber composite material, namely the carbon fiber reinforced plastic. The first fiber composite material, namely the carbon fiber reinforced plastic, is also referred to as the first material or is a first material. The second sub-area TB2 is made of a second material that differs from the first material and is, in particular, completely electrically non-conductive. Furthermore, it is preferably provided that the second material is, in particular, completely magnetically non-conductive. The support areas TB1 and TB2 are, in the present case, components of at least the support element 19.In this arrangement, the support areas TB1 and TB2 form, in particular at least or exclusively, the outer ring 22, such that the second support area TB2 is arranged in the radial direction of the rotor 10 between the respective permanent magnets 12 and the first support area TB1. It is specifically provided that the first support area TB1 is overlapped inwards, and in particular completely, by the second support area TB2 in the radial direction of the rotor 10. Thus, the respective permanent magnet 12 is supported outwards in the radial direction of the rotor 10 via the second support area TB2 on the first support area TB1.

[0041] In the Fig. 1 and Fig.In the embodiment shown in Figure 2, for example, the second material from which the second support region TB2 is formed is a second fiber-reinforced plastic, different from the first fiber-reinforced plastic, and preferably a second fiber-reinforced plastic, different from the carbon fiber-reinforced plastic. The second fiber-reinforced plastic, and thus the second fiber-reinforced plastic, is formed, in particular, entirely by a second matrix and second reinforcing fibers embedded in the second matrix. It is conceivable that the first matrix and the second matrix, which is also referred to as the second matrix material, are formed from the same material, which is, for example, a plastic, or that the first matrix is ​​formed from a first material and the second matrix is ​​formed from a second material different from the first material.The first material can be a plastic, and the second material can also be a plastic. Preferably, the second reinforcing fibers, in particular all of them, differ from the first reinforcing fibers, in particular in that the first reinforcing fibers, in particular all of them, are made of a first fiber material, and the second reinforcing fibers, in particular all of them, are made of a second fiber material that differs from the first fiber material. The second fiber material can, for example, comprise aramid and / or glass and / or ceramic, so that, for example, the second reinforcing fibers can be glass fibers and / or ceramic fibers and / or aramid fibers. The first reinforcing fibers, in particular all of them, are preferably carbon fibers.It is evident that the support areas TB1 and TB2 form the outer ring 22 and are arranged one on top of the other in the radial direction of the rotor 10, in particular such that the support areas TB1 and TB2 are directly adjacent to each other in the radial direction of the rotor 10 and that the support area TB1 adjoins the support area TB2 outwards in the radial direction of the rotor 10. Thus, the support areas TB1 and TB2 are or form a laminate. A first layer of the laminate is formed by the support area TB1 and a second layer of the laminate is formed by the support area TB2. Since the support area TB1 has the first reinforcing fibers, which are designed as carbon fibers and are electrically conductive, the first layer of the laminate is electrically conductive, and therefore an electrically conductive layer.Since the entire second layer of the laminate is made of a second material that is electrically non-conductive, the second layer of the laminate is itself electrically non-conductive. This allows for particularly efficient operation of the axial flux machine.

[0042] The respective intermediate web 26 is formed, for example, by the support area TB1 and / or the support area TB2. The support ring 20, also referred to as the inner ring, is formed, for example, by the support area TB1 and / or the support area TB2. Reference symbol list 10 Rotor 12 permanent magnets 14 magnetic cassettes 18 carriers 19 first support element 20 support ring 22 Outer ring 24-hour opening 26 Intermediate walkway TB1 first carrier area TB2 second support area QUOTES INCLUDED IN THE DESCRIPTION

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

[0000] DE 10 2021 105 499 B4

[0002] CN 107979256 A1

[0002] DE 10 2019 216 844 A1

[0002] EP 3 506 463 A1

[0002]

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