Electromechanics

The electromechanical machine uses lightweight holding members and semi-shell covers to address weight, cost, and NVH challenges, achieving efficient and cost-effective assembly with improved sound insulation and electromagnetic compatibility.

JP2025525195AActive Publication Date: 2025-08-01ROBERT BOSCH GMBH
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Patent Information

Application Number
JP2025505981
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-08-04
Filing Date
2023-06-26
Publication Date
2025-08-01
Estimated Expiration
2043-06-26

AI Technical Summary

Technical Problem

Existing electromechanical machines in electric vehicles face challenges in reducing weight, manufacturing costs, and noise, vibration, and harshness characteristics, while requiring complex and costly assembly methods.

Method used

The proposed electromechanical machine uses a configuration with holding members made of lightweight materials such as plastic or hybrid materials to connect cooling plates and stator members, allowing for a modular design that reduces weight and manufacturing costs, and incorporates semi-shell-shaped covers for improved sound insulation and electromagnetic compatibility.

Benefits of technology

This configuration achieves significant weight reduction, cost savings, and improved noise, vibration, and harshness characteristics, while enabling simpler manufacturing and easier assembly, with enhanced sound insulation and electromagnetic compatibility.

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Abstract

The present invention relates to an electromechanical machine (10) comprising at least one first electromechanical member (12, 14), which electromechanical member includes at least one first cooling plate (20) and a further cooling plate (18) in which a first stator member (24) and a second stator member (26) are accommodated. There is a rotor (28) between the first stator member (24) and the second stator member (26), and the first cooling plate (20) and the further cooling plate (18) are fixed to each other by a number of holding members (36). Furthermore, the present invention relates to the use of the electromechanical machine (10) in an electric axle module of an electric vehicle.
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Description

Technical Field

[0001] The present invention relates to an electromechanical machine comprising at least one electromechanical member, said electromechanical member including at least a first cooling plate and a further cooling plate, to which a first and a second stator member are respectively held. Furthermore, the present invention relates to the use of an electromechanical machine in an electric axle module of an electric vehicle.

Background Art

[0002] German Patent Application Publication No. 10201106947 discloses an electric motor that is simply connected to a carrier unit provided for holding or statically fixing a stator. For this purpose, a bracket-shaped protrusion having a radial recess on the circumferential surface of the stator is formed, and this protrusion is intended to interact with the circumferential surface of the carrier unit to form a connection by frictional engagement. As a result, a bracket-shaped elastic structure is established that facilitates attachment and holding and reduces vibrations and mechanical influences generated in the mounted state of the electric motor. In a further embodiment, the connection by frictional engagement may be designed as a pure clamp connection or a twist clamp connection. In particular, additional assembly and material costs need to be minimized, and in addition, the preconditions for automated and quality-assured manufacturing need to be created.

[0003] German Patent Application Publication No. 102016209298 is directed to vehicle members having regions for attenuating solid-borne sound and / or vibrations, and in particular, the behavior of natural vibrations is changed and is less affected compared to conventional components. For this purpose, chemical and / or physical processing is performed on relevant regions of metal vehicle members. In one embodiment of the disclosed invention, the vehicle member may be a housing for an electric motor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] According to the present invention, an electromechanical machine is proposed that includes at least one electromechanical member, which includes at least one first cooling plate and a further cooling plate, and in which a first and a second stator member are respectively accommodated. A rotor is associated with the first stator member and the second stator member, and the first cooling plate and the further cooling plate are fixed to each other by a number of holding members.

[0006] By means of the solution proposed by the present invention, by using a number of holding members, the jacket-like housing for the electromechanical machine can be replaced, which on the one hand contributes to weight reduction and on the other hand significantly reduces the manufacturing costs. The number of holding members extending between the cooling plates may vary, and the holding members may be formed from materials such as, for example, plastic or a hybrid material including plastic and metal parts.

[0007] In an advantageous embodiment of the electromechanical machine according to the present invention, the first cooling plate, the further cooling plate, the second cooling plate, as well as the stator members associated therewith and the rotor member arranged therebetween are configured in a disc shape.

[0008] In an advantageous improvement of the electromechanical machine proposed by the present invention, the electromechanical machine is configured as an axial flux machine, a transverse flux machine, or a hybrid radial-axial flux machine (Radiax).

[0009] In the electric machine proposed by the present invention, a further cooling plate is preferably configured as a double cooling plate. Thereby, the electric machine can be expanded in a modular manner such that the electric machine includes a first electric machine member and a second electric machine member that are connected by a further cooling plate arranged centrally and configured as a double cooling plate.

[0010] In an advantageous refinement of the electric machine proposed by the present invention, the electric machine has a first electric machine member and a second electric machine member that are connected to each other via the double cooling plate described above.

[0011] In an advantageous refinement of the electric machine proposed by the present invention, each rotor is arranged in at least one electric machine member so as to form a gap with respect to a stator member associated with the rotor and preferably configured in a disc shape.

[0012] In the electric machine proposed by the present invention, a number of holding members are manufactured from a lightweight plastic material, a metal material, or a hybrid material, i.e., a combination of a plastic material and a metal material. This structure enables a significant weight reduction in the configuration of the electric machine proposed by the present invention without any impairment of its functional safety and functional stability.

[0013] In an advantageous form of the electric machine proposed by the present invention, the holding members are configured, for example, with a circular, semi-circular, annular, square, hollow profile, or V-shaped cross-section. Both hollow profiles and solid materials with a cylindrical or square cross-section can be used.

[0014] In an advantageous refinement of the electric machine proposed by the present invention, the holding members for fixing the cooling plates to each other are configured in a V-shape, W-shape, N-shape, or I-shape. Such a geometric formation of these holding members provides a sufficient number of connection points on the cooling plates that connect these holding members to each other and in which the holding members extend.

[0015] In the electric machine proposed by the present invention, the holding member between the cooling plate and the further cooling plate is provided with a spacer member. Thereby, it is possible to correct manufacturing tolerances regarding the separation and maintenance of the gap between the components of the electric machine, that is, between the stator member and the rotor, and to adjust the axial gap between the end face of the stator member and the disc-shaped rotor.

[0016] In an advantageous improvement of the electric machine proposed by the present invention, the first and second electric machine members are provided with semi-shell-shaped shielding halves. Thereby, the electric machine is encapsulated against the outside, and better sound insulation and electromagnetic compatibility are provided.

[0017] In the electric machine proposed by the present invention, a position sensor may be accommodated on the outer surface of the first or second cooling plate, or power electronics may be arranged on the outer surface or the lower surface of the electric machine. The arrangement configurations of the position sensor and the power electronics depend on the respective possible installation spaces when the electric machine is installed in an electric drive vehicle.

[0018] In an advantageous form, the electric machine proposed by the present invention may be connected to the vehicle chassis by means of multi-point support using bearings with damping members. In order to be able to consider various installation requirements, a rod-shaped extension may be formed between the bearings of the multi-point support and the damping members.

[0019] The electric machine proposed by the present invention, regardless of whether it is composed of one electric machine member or two adjacent electric machine members, may be associated with a single-stage or multi-stage gear unit on one outer surface, particularly on the outer surface of the first or second cooling plate. It is also possible to use an electric machine that directly generates a very high torque without intervening connection through a gear.

[0020] Furthermore, the present invention relates to the use of an electric machine in an electric axle module of an electric drive vehicle.

Advantages of the Invention

[0021] The configuration of an electromechanical device proposed by the present invention, comprising at least one electromechanical member, preferably two electromechanical members arranged adjacent to each other, can significantly reduce the materials used in the manufacture of the motor housing. Furthermore, the proposed solution according to the present invention can significantly reduce costs and weight. Moreover, the electromechanical device proposed by the present invention can be manufactured using simpler manufacturing techniques and, nevertheless, maintain the general requirements demanded of the motor housing in terms of functionality. The proposed solution according to the present invention ensures that a holding member is used to accurately maintain the distance between the individual motor components of the electromechanical device. Furthermore, compared with the solution provided for the motor housing for the electromechanical device, the adjustment of these distances can be carried out much more easily. Also, the proposed solution according to the present invention significantly improves the noise, vibration, and harshness characteristics of the electromechanical device.

[0022] The holding member proposed by the present invention can be manufactured from any combination of plastic materials or low-cost materials, thus achieving significant cost advantages in the manufacture of the electromechanical device proposed by the present invention. Also, the weight of the housing is significantly reduced. Furthermore, much simpler and cost-effective manufacturing techniques can be used during the manufacture of the electromechanical device proposed by the present invention. A very simple and effective sealing can be achieved by means of a shielding member and a semi-shell-shaped cover member, thus protecting the internal components of the electromechanical device from water and dust. Furthermore, the components of the electromechanical device proposed by the present invention are encapsulated against the outside by two semi-shell-shaped shielding members, thereby achieving lower noise radiation.

[0023] The power electronics associated with the electric machine proposed by the present invention can be arranged at different installation positions according to the requirements of the automobile manufacturer. Since the power electronics can be directly connected to one of the cooling plates, which is one of the electric machine members of the electric machine proposed by the present invention, connection cables can be saved. The materials used for the shell-shaped cover and the shielding member can be selected so as to avoid electric shock during assembly or subsequent operation of the electric machine proposed by the present invention.

[0024] According to the installation requirements, the above-mentioned power electronics may be associated with one of the cooling plates of the electric machine proposed by the present invention. Furthermore, the power electronics may be arranged above and below the electric machine, or may be integrated into one of the cooling plates. By arranging a single-stage or multi-stage gear unit on one of the cooling plates of the first electric machine member or the second electric machine member, a compactly designed electric axle module that can meet the installation requirements of each automobile manufacturer with respect to the available installation space can be realized.

[0025] The solution proposed by the present invention enables easy adaptation to different output powers and easy expansion. Furthermore, it should be emphasized that the concept proposed by the present invention can achieve a modular design and can achieve significant simplification by omitting gears. Also, for example, by using a common cooling plate for the power electronics and the electric machine, a smaller and more compact design can be realized. Furthermore, the solution proposed in the present invention is substantially cable-free, which realizes further simplification especially when performing maintenance work.

Brief Description of the Drawings

[0026] Embodiments of the present invention will be described in detail based on the drawings and the following description.

Figure 1

Figure 1.1

Figure 2

Figure 3

Figure 3.1

Figure 4

Figure 4.1

Figure 5

Figure 5.1

Figure 6

Figure 6.1

Figure 7

Figure 7.1

Figure 7.2

Figure 8

Figure 8.1

Figure 9

Figure 9.1

Figure 10

Figure 10.1

Figure 11

Figure 11.1

Embodiments for Carrying Out the Invention

[0027] In the following description, the same or similar members are denoted by the same reference numerals, and repeated descriptions of these members in individual cases are omitted. The drawings only schematically represent the subject matter of the present invention.

[0028] Figure 1 shows an electromechanical device 10 proposed by the present invention, which includes a first electromechanical member 12 and a second electromechanical member 14. Figure 1.1 shows a side view of the electromechanical device 10 according to Figure 1.

[0029] As can be seen from the front view of the electromechanical device 10 proposed by the present invention according to Figure 1, the electromechanical device 10 includes a first electromechanical member 12 and a second electromechanical member 14 arranged coaxially therewith. A paragraph of the shaft 16 is associated with each of the electromechanical members 12 and 14 in the lateral direction.

[0030] The electromechanical device 10 proposed by the present invention including the first electromechanical member 12 is characterized in that instead of a solid material mechanical housing in the form of a jacket according to Figure 1, a number of holding members 36 are arranged between a first cooling plate 20 and a further cooling plate 18 arranged in the center. As shown in Figure 1, the holding member 36 extends between the first cooling plate 20 and a further cooling plate 18 arranged in the center. A first stator member 24 is arranged inside the first cooling plate 20, and a second stator member 26 is arranged inside the further cooling plate 18 facing the first cooling plate 20.

[0031] There is a rotor 28 between them, positioned while forming a gap 40 between the end faces of the opposing stator members 24 and 26. The exact dimensions of the gap 40 between the individual end faces of the stator members 24 and 26 and the rotor 28 can be adjusted by spacer members 38 provided at the joining points of the holding member 36 to the first cooling plate 20 and the joining points of the holding member 36 to the further cooling plate 18, and can be readjusted as necessary.

[0032] Since the additional cooling plate 18 is configured as a double cooling plate, it functions as a joint location of the second electromechanical member 14 to the first electromechanical member 12. The second electromechanical member 14 is configured in the same way as the first electromechanical member 12. In the drawings according to FIG. 1, the holding member 36 is omitted with respect to the second electromechanical member 14. The first electromechanical member 12 and the second electromechanical member 14 are formed, for example, in a cylindrical shape in this embodiment variation. It may be different, for example, to integrate cooling channels or to secure installation space and location for connection components arranged, for example, in the axial direction. The rotors 28, 34 are installed between the first cooling plate 20, the additional cooling plate 18, and the second cooling plate 22 of the second electromechanical member 14. Since all components have a configuration formed in a substantially disc shape, the entire electromechanical device 10 proposed by the present invention has, for example, a cylindrical appearance when viewed from the front view of FIG. 1. From the drawing of FIG. 1, it can be seen that the rotor 34 is arranged between the first stator member 30 and the second stator member 32, both formed in a disc shape, while forming a gap 40. The gap 40 is adjusted by the holding member 36 at both ends of the holding member 36 and adjusted if necessary.

[0033] From the side view according to FIG. 1.1, it can be seen that the component unit according to FIG. 1 is surrounded by the first shielding half 42 and the second shielding half 44, whereby, on the one hand, the internal components of the electromechanical device 10 proposed by the present invention are protected and, on the other hand, the noise radiation to the outside can be attenuated. The half-shell-shaped covers 46, 48 are attached on the first shielding half 42 and the second shielding half 44, whereby the assembly of the electromechanical device 10 proposed by the present invention is shielded against the outside and becomes accessible after removal.

[0034] The individual components of the electric machine 10 proposed by the present invention can be seen in more detail from the exploded view of FIG. 2. FIG. 2 shows that the first cover 46 and the second cover 48 are formed in a substantially semi-shell shape and can be screwed along the joint. The first cover 46 and the second cover 48 respectively enclose the first shielding half 42 and the second shielding half 44 which are configured to complement each other, and shield the internal components of the electric machine 10 including the first electric machine member 12 and the second electric machine member 14 from the outside. Thereby, the components of the electric machine 10 proposed by the present invention are reliably protected from dust and water, and furthermore, it is guaranteed that the noise radiation is reduced and the noise-vibration-harshness characteristics are significantly improved.

[0035] The electric machine 10 proposed by the present invention according to the perspective view of FIG. 2 includes the first electric machine member 12 and the second electric machine member 14. The two electric machine members 12, 14 are connected to each other via a further cooling plate 18 that functions as a double cooling plate. The first cooling plate 20 and the second cooling plate 22 are arranged on the outside as shown in FIG. 2. The rotors 28, 34 each configured in a disc shape are respectively arranged between the stator members 24, 26 with respect to the first electric machine member 12, and the rotor 34 of the second electric machine member 14 is between the stator members 30, 32. The two rotors 28, 34 are arranged relative to the stator members 24, 26 and the stator members 30, 32 while forming a gap 40.

[0036] FIG. 3 and FIG. 3.1 show a front view and a side view of the electric machine 10 proposed by the present invention according to the drawings of FIG. 1 and FIG. 1.1. From the drawing related to FIG. 3, it can be seen that the power electronics 50 is installed on the outer surface 54 of the first cooling plate 20. The power electronics 50 surrounds the position sensor 52 which is also provided on the outer surface 54 of the first cooling plate 20 of the first electric machine member 12. As an alternative to the embodiment shown in FIG. 3, the power electronics 50 may be housed together with the position sensor 52 on the outer surface of the second cooling plate 22 of the second electric machine member 14.

[0037] Similar to the drawings according to FIGS. 1 and 1.1, the first cooling plate 20 and the further cooling plate 18 functioning as a double cooling plate are connected to each other by a number of holding members 36. The exact distance between the first cooling plate 20 and the further cooling plate 18 is set by spacer members 38 arranged at the joining points of the holding members 36 and may optionally be adjusted by exchanging the spacer members.

[0038] From FIG. 3 showing a side view of the electromechanical machine 10, it can be seen that the power electronics 50 in this embodiment variant has a substantially circular appearance and surrounds the position sensor 52. The power electronics 50 may have a rectangular design or different geometries. Similar to the drawings according to FIGS. 1.1, the electromechanical machine 10 is surrounded by shell-like covers 46, 48, which surround the first and second shielding halves 42, 44.

[0039] In contrast to the electromechanical machine 10 proposed according to the invention according to FIGS. 1 and 1.1, FIGS. 3 and 3.1, in the embodiment variant of the electromechanical machine 10 proposed according to the invention according to FIGS. 4 and 4.1, the power electronics 50 is arranged, for example here, on the lower face 55 of the electromechanical machine 10, here below the second electromechanical member 14. The position sensor 52 is on the outer face 54 of the first cooling plate 20, similar to the drawings according to FIGS. 3 and 3.1 of the electromechanical machine 10 proposed according to the invention. FIG. 4.1 shows the position of the power electronics 50 attached here to the lower face 55 of the electromechanical machine 10. Furthermore, the position sensor 52 is associated with the attachment part of the shaft 16 on the first cooling plate 20. The power electronics 50 may be accommodated in different installation positions.

[0040] From FIGS. 5 to 8.1, various embodiment variants of the holding members 36 can be seen with respect to both their geometry and their cross-sectional configuration. Figure 5 shows an embodiment of the V-shaped 66 of the holding member 36. In this embodiment of the holding member 36, its cross-section is a circular cross-section 56 of a solid material. This can be a plastic material, a metal material, or a hybrid material, that is, a combination of plastic and metal materials, and is applicable to all embodiments of the holding member 36 according to Figures 5 to 8.1. Thereby, a significant weight advantage is achieved, and the noise-vibration-harshness characteristics of the electromechanical device 10 proposed by the present invention are extremely well affected, and the mechanical stability of the electromechanical members 12, 14 of the electromechanical device 10 proposed by the present invention is not infringed.

[0041] Figure 6 shows an embodiment of the W-shaped 68 of the holding member 36. In this embodiment, the holding member 36 has an annular cross-section 58. Figure 7 similarly shows an embodiment of the W-shaped 68 of the holding member 36. According to Figure 7, a square cross-section 60 of a solid material may be realized, or as shown in Figure 7.2, a hollow profile 62 may be used. Also in these embodiments of the holding member 36, the holding member 36 may be entirely made of a metal material, a plastic material, or a hybrid material of plastic and metal materials.

[0042] Figure 8 shows an embodiment of the N-shaped 70 of the holding member 36. The holding member 36 according to Figure 8.1 may have a V-shaped cross-section 64. Instead of the V-shaped cross-section 64, an I-shaped cross-section may be selected. All of the holding members 36 shown in Figures 5 to 8 may have different cross-sectional variations as shown in Figures 5.1, 6.1, 7.1, 7.2, and 8.1. The formation of the cross-section may be arbitrary. There are various base materials that can be used as the holding member 36. The cross-sectional geometries shown in Figures 5.1, 6.1, 7.1, 7.2, and 8.1 are given as examples.

[0043] Figures 9 and 9.1 show that the electromechanics 10 proposed by the present invention, which includes a first electromechanical member 12 and a second electromechanical member 14, is connected to a vehicle chassis 80 of an electric drive vehicle, for example, by a three-point support. The vehicle may be a hybrid vehicle (HEV, PHEV) rather than a pure electric drive vehicle. Furthermore, the machine 10 proposed by the present invention may be used as a booster module or a booster axle in a vehicle. The three-point support of the electromechanics 10 proposed by the present invention is realized by arranging damping members 82 between the connection points of the vehicle chassis 80. Between the components of the electromechanics 10, that is, in this embodiment, between the first cooling plate 20, the second cooling plate 22, and a further cooling plate 18 formed as a double cooling plate, a bearing 84 is arranged in the form of a three-point support on the vehicle chassis 80. Thus, the electromechanics 10 proposed by the present invention, which includes a first electromechanical member 12 and a second electromechanical member 14 and is formed, for example, in a cylindrical shape here, is supported at three points on the vehicle chassis 80. The damping members 82 almost completely prevent noise or vibrations generated during operation from being transmitted to the vehicle chassis 80.

[0044] Figure 9.1 shows a front view of the electromechanics 10 proposed by the present invention according to FIG. 9. In FIG. 9.1, the support points on the vehicle chassis 80 can be offset by, for example, 180° with respect to each other and opposed to each other. However, any angle other than 180° may be selected. The embodiment according to FIG. 9.1 also shows that the electromechanics 10 proposed by the present invention includes a first cover 46 and a second cover 48 configured in a semi-shell shape, and these covers surround a first shielding half 42 and a second shielding half 44. Regarding further components of the electromechanics 10 proposed by the present invention according to FIGS. 9 and 9.1, the content already described with respect to FIGS. 1, 1.1, 3, and 3.1 applies.

[0045] Figures 10 and 10.1 show an embodiment variant in which the electric machine 10 proposed by the present invention is supported at three points on the vehicle chassis 80. Depending on the installation position of the electric axle module comprising the electric machine 10 proposed by the present invention and the available installation space, it may be necessary to arrange a rod-shaped extension 86 between the connection points of the chassis 80, the damping member 82, and the bearing 84. The extension 86 shown in Figure 10 is associated with the bearing 84 on the first cooling plate 20. It is of course also possible to attach the rod-shaped extension 86 to the connection points to the vehicle chassis 80 for both of the two bearings 84, i.e., both the first cooling plate 20 and the second cooling plate 22. This is also shown in Figure 10.1, where at the lower support point of the three-point support, a rod-shaped extension 86 extends between the corresponding damping member 82 and the bearing 84 on the lower surface 55 of the electric machine 10 proposed by the present invention. The arrangement configuration of the rod-shaped or tube-shaped extension 86 depends on the installation conditions of the electric machine 10 proposed by the present invention within the chassis 80 of the electric drive vehicle or the available installation space. The electric machine 10 proposed by the present invention may be used not only in electric drive vehicles but also in hybrid vehicles (HEV, PHEV) or as a booster module or booster electric axle.

[0046] Regarding the components of the electric machine 10 according to Figures 10 and 10.1, the content already described with respect to Figures 1, 1.1, 3, 3.1, 9 and 9.1 applies. Figures 11 and 11.1 show an embodiment of the electric machine 10 proposed by the present invention. In this embodiment, a single-stage or multi-stage gear unit 90 is arranged on one outer surface of the cooling plates 20, 22. This is driven by the shaft 16 on the outer surface 54 of the first cooling plate 20. Alternatively, as shown in FIG. 11, a single-stage or multi-stage gear unit 90 may be arranged on the outer surface 54 of the second cooling plate 22 of the second electric machine member 14. FIG. 11.1 shows a side view of the arrangement configuration of the electric machine 10 proposed by the present invention according to FIG. 11. Similar to the above embodiment of the electric machine 10 proposed by the present invention, the electric machine 10 has first and second covers 46, 48 configured in a shell shape, and these covers surround first and second shielding halves 42, 44 that are also formed in a shell shape.

[0047] The electric machine 10 proposed by the present invention may be formed, for example, as an axial flux machine. Instead of an axial flux machine, a hybrid radial-axial flux machine is also one of the possible variations, similar to a transverse flux machine.

[0048] All the embodiments of the electromechanical machine 10 proposed by the present invention, which are described based on FIGS. 1 to 11.1, are common in that they include only the first mechanical member 12 or either of the two electromechanical members 12, 14, and by using the holding member 36, a significant reduction in material and weight can be achieved. Furthermore, highly cost-effective manufacturing techniques can be used. By forming the holding member 36 from a plastic material, not only significant weight advantages can be achieved, but also the noise-vibration-harshness characteristics of the electromechanical machine 10 proposed by the present invention are significantly improved when mounted on the vehicle chassis 80. The noise radiation is significantly minimized, which is ensured by the fact that the electromechanical machine 10 proposed by the present invention, which is formed in a substantially cylindrical shape, is supported at three points. The internal components of the first electromechanical member 12 and the second electromechanical member 14 can be protected from the ingress of dust and water by the covers 46, 48 and the shielding halves 42, 44, but after removing the parts 42, 44 or 46, 48, free access to the inside of the electromechanical machine 10 is possible. Adjustment of the distance, for example, readjustment of the gap 40, can be done very easily by replacing the corresponding spacer member 38 at the connection point of the holding member 36 to the cooling plates 18, 20, 22.

[0049] The present invention is not limited to the embodiments and aspects described and emphasized herein. Rather, within the scope of the claims and within the scope of the actions of an expert, numerous modifications are possible.

Claims

1. An electromechanical machine (10) comprising at least one first electromechanical member (12, 14), said electromechanical member comprising at least one first cooling plate (20) and a further cooling plate (18) in which a first and a second stator member (24, 26) are respectively received, wherein a rotor (28) is disposed between said first stator member (24) and said second stator member (26), and wherein said first cooling plate (20) and said further cooling plate (18) are fixed to each other by a number of holding members (36). The electromechanical machine (10) is characterized by this.

2. The electromechanical machine (10) according to claim 1, characterized in that said first cooling plate (20), said further cooling plate (18), a further second cooling plate (22), said first and said second stator members (24, 26), and at least one rotor (28, 34) are formed in a disc shape.

3. The electromechanical machine (10) according to claim 1 or 2, characterized in that said electromechanical machine (10) is configured as a hybrid radial / axial flux machine (Radiax) or a transverse flux machine.

4. The electromechanical machine (10) according to any one of claims 1 to 3, characterized in that said further cooling plate (18) is configured as a double cooling plate.

5. The electromechanical machine (10) according to any one of claims 1 to 4, characterized in that said electromechanical machine (10) has a first electromechanical member (12) and a second electromechanical member (14), which are connected to each other via said further cooling plate (18) configured as a double cooling plate.

6. In said at least one electromechanical member (12, 14), characterized in that each respective rotor (28, 34) is arranged while forming a gap (40) with respect to each respective stator member (24, 26; 30, 32). The electromechanical machine (10) according to any one of claims 1 to 5 is characterized by this.

7. The electromechanical machine (10) according to any one of claims 1 to 6, characterized in that said number of holding members (36) is manufactured from a plastic material, a metal material, or a combination of a plastic material and a metal material.

8. The electric machine (10) according to any one of claims 1 to 7, characterized in that the holding member (36) is configured with a circular cross-section (56), or a semi-circular cross-section, or an annular cross-section (58), or a square cross-section (60), or a hollow profile cross-section (62), or a V-shaped cross-section (64).

9. The electric machine (10) according to any one of claims 1 to 8, characterized in that the holding member (36) is configured in a V-shape (66) or a W-shape (68) or an N-shape (70) or an I-shape.

10. The electric machine (10) according to any one of claims 1 to 9, characterized in that the holding member (36) between the cooling plates (20, 22) and the further cooling plate (18) comprises a spacer member (38).

11. The electric machine (10) according to any one of claims 1 to 10, characterized in that the first and second electric machine members (12, 14) comprise semi-shell-shaped shielding halves (42, 44).

12. The electric machine (10) according to any one of claims 1 to 11, characterized in that a position sensor (52) is accommodated on an outer surface (54) of the first or second cooling plate (20, 22), and power electronics (50) are arranged tangentially on the outer surface (54) or on the circumference of the electric machine (10).

13. The electric machine (10) according to any one of claims 1 to 12, characterized in that the electric machine (10) is accommodated by a bearing (84) with multiple-point support, in particular three-point support, and comprising a damping member (82) in a vehicle chassis (80).

14. The electric machine (10) according to claim 13, characterized in that an extension (86) extends between the bearing (84) and the damping member (82).

15. The electric machine (10) according to any one of claims 1 to 14, characterized in that a single-stage or multi-stage gear unit (90) is associated with an outer surface (54) of the electric machine (10), in particular one of the cooling plates (20, 22).

16. Use of the electric machine (10) according to any one of claims 1 to 15 in an electric axle module of an electric drive vehicle, a hybrid vehicle (HEV, PHEV), or as a booster axle.

Citation Information

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