• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a disc rotor (10 ') for an axial flow electrical machine comprising: - a plurality of magnet poles disposed on the peripheral portion of said rotor, - a shaft element (14') for driving a shaft in rotation, wherein the shaft member (14 ') and the plurality of magnet poles are at least partially embedded in a composite material comprising a polymer matrix and non-oriented fibers. According to the invention, a plurality of radial reinforcing elements (20 ') are arranged between the magnet poles and arranged symmetrically with respect to the axis of the rotor and at a radial median plane of the rotor. Each radial reinforcing element (20 ') comprises a plurality of unidirectional continuous fibers oriented radially, of length at least equal to the radial length of the magnet poles. Each radial reinforcing element (20 ') is furthermore at least partially embedded in said composite material.
    公开号:FR3014255A1
    申请号:FR1361949
    申请日:2013-12-02
    公开日:2015-06-05
    发明作者:Lionel Calegari；Gilbert Fassot；Arnaud Villeneuve
    申请人:Renault SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a disc rotor with reinforced composite structure for an axial flow electrical machine, in particular for an axial flow motor. The invention can find an application in the automobile, particularly in the traction of an electric or hybrid vehicle, or other. An axial flow electric machine comprises a rotor and one or two stators fed with current. The rotor and the stators are mounted around a rotating shaft, which is secured to the rotor.
    [0002] It is known to use, especially for applications in the field of building, a metal rotor which can be relatively easy to manufacture. Nevertheless, when looking to design a compact electric machine, there is a risk of overheating of the permanent magnet rotor due to eddy currents, and in case of temperature rise, the magnetic flux can be disturbed so that performance may be reduced. We therefore seek to achieve an axial flow electric machine to reconcile compactness, robustness and performance.
    [0003] For this purpose, rotors of composite material have been developed. For example, US 6,674,214 discloses an axial flow electric machine with a rotor comprising magnet poles embedded in a composite material support so that the mass of the rotor can be relatively small. The overmolded poles participate in the radial rigidity of the rotor, the composite material of which comprises a fiber reinforcement, without preferential orientation of the fibers. This type of material may, however, have insufficient radial stiffness. Resilient composite materials can be obtained using methods such as the RTM ("Resin Transfer Molding") process, which is a compression-transfer molding process which must then be followed by machining. Such manufacturing processes, however, do not allow mass production and low cost because of the machining and high pressures of the RTM process.
    [0004] There is therefore a need for a rotor of robust composite material, especially axially, which can also be achieved by a simple manufacturing process, preferably without machining. To this end, the subject of the invention relates to a disc rotor for an axial flow electrical machine comprising: a plurality of magnet poles disposed on the peripheral portion of said rotor; a shaft element for driving a shaft; in rotation, wherein the shaft element and the plurality of magnet poles are at least partially embedded in a composite material comprising a polymer matrix and fibers arranged randomly or without preferred direction, the rotor further comprising a a plurality of radial reinforcing elements disposed between the magnet poles and arranged symmetrically with respect to the axis of the rotor and with respect to a radial median plane of the rotor, each radial reinforcing element comprising a plurality of radially oriented unidirectional continuous fibers or substantially radially, the length of the continuous fibers being in particular at least equal to the radial length of the magnet poles, da ns wherein each radial reinforcing element is at least partially embedded in said composite material. By "unidirectional continuous fibers" is meant continuous fibers juxtaposed. These continuous fibers may be long fibers, for example of length at least equal to the radial length of the magnet poles but may also be shorter, the important thing being that they are all oriented in the same direction. Their length can thus be determined so as to obtain a predetermined axial stiffness of the rotor. The particular arrangement of the rotor and the presence of radial reinforcing elements with continuous fibers whose orientation is preferred makes it possible to reinforce the stiffness of the rotor, in particular its axial stiffness. Such radial reinforcement of the rotor makes it possible to avoid bending the rotor under the effect of the axial magnetic force experienced by the magnet poles when facing the windings of the stator or stators.
    [0005] In particular, the symmetrical arrangement of the radial reinforcing elements with respect to the axis of the rotor and with respect to a radial median plane of the rotor makes it possible to balance the mass of the rotor for a smooth and smooth rotation of the rotor. This balancing can be facilitated by using a plurality of identical radial reinforcing elements. The shaft member may be a hub, or the shaft itself.
    [0006] The polymer matrix of the composite material may be thermosetting. Advantageously, it can withstand the operating temperatures of the rotor. It may be for example thermosetting resin, for example unsaturated polyesters (UP), vinylesters or epoxides (EP), but also some thermoplastic matrices such as polyamide (PA) or polyphenylene sulfide (PPS). . This matrix may be reinforced with carbon or glass fibers, glass fibers being preferred. Advantageously and in a nonlimiting manner, the length of the continuous fibers of each radial reinforcing element may be greater than the radial length of the magnet poles and the continuous fibers exceed the magnet poles in the direction of the shaft element. This arrangement makes it possible to improve the mechanical strength of the rotor, in particular parts of the rotor located between the magnet poles. The continuous fibers may optionally extend to the rotor shaft member. The continuous fibers of each radial reinforcing element may optionally be woven with short fibers, which makes it possible to improve the mechanical strength of the rotor. Advantageously and in a nonlimiting manner, each radial reinforcing element may extend in a radial plane of the rotor and form a layer of thickness less than the thickness of the rotor. A layer may in particular be flush with a radial surface of the rotor or be arranged between two adjacent layers of composite material, inside the latter. The different layers of composite material or radial reinforcing element thus extend in radial planes of the rotor. An arrangement of each reinforcing element layer at the surface or closer to the surface, can improve the mechanical strength. The latter can however also be improved by arranging the radial reinforcing elements between layers of composite material, possibly between each layer of composite material. The rotor manufacturing process can however be longer.
    [0007] The radial reinforcing elements may each extend in a radial or axial plane of the rotor. However, their positioning along axial planes can make the manufacture of the rotor complex. Advantageously, each radial reinforcing element may extend in a radial plane of the rotor to facilitate the manufacture of the rotor. In particular, each radial reinforcing element can occupy all the space or substantially all the space separating two adjacent magnet poles. In other words, each reinforcing element can extend from a magnet pole to the adjacent magnet pole. Thus, for example, for magnet poles separated by a substantially rectangular or trapezoidal space, the reinforcing elements have the same substantially rectangular or trapezoidal shape. For better mechanical strength, at least one radial reinforcing element may be disposed between each pair of adjacent magnet poles. When several reinforcing elements are arranged between each pair of adjacent magnet poles, in particular in radial planes of the rotor, they can be advantageously separated from each other by a layer of composite material.
    [0008] The disc rotor may also comprise axial reinforcing elements arranged between the magnet poles and arranged symmetrically with respect to the axis of the rotor and with respect to a radial median plane of the rotor, each axial reinforcing element extending in a axial plane of the rotor and comprising a plurality of axially oriented unidirectional continuous fibers, the length of the continuous fibers being equal to at least half the thickness of the rotor, wherein each axial reinforcing member is fully embedded in said composite material. Such axial reinforcing elements may further enhance the mechanical strength of the rotor.
    [0009] Advantageously, the axial reinforcing elements are integral, for example made in one piece, with the radial reinforcing elements. This attachment can be obtained by pultrusion with a composite material, for example the same as that forming the rotor. Advantageously and in a nonlimiting manner, the fibers of the radial reinforcing elements or axial reinforcing elements may be chosen from glass fibers, carbon fibers, pultruded or pre-impregnated glass fibers and pultruded carbon fibers or prepregs. Advantageously, non-conductive glass fibers are used. The pre-impregnated fibers are fibers impregnated with a polymeric material, advantageously the same as that of the composite material prior to their integration with the composite material of the rotor. The pultruded fibers are fibers impregnated with a thermosetting resin by passing through a bath and drawn through a heated die. The families of thermosetting resin that can be used are, for example, unsaturated polyesters (UP), vinyl esters and epoxides (EP), but also certain thermoplastic matrices such as polyamide (PA) or polyphenylene sulfide (PPS). When the fibers are pultruded, the reinforcing elements are in the form of elongated elements, similar to bars, which have the advantage of being easier to handle than strands of fibers. Similarly, the impregnated fibers may also be easier to handle during the manufacture of the rotor. The invention also relates to an axial flow rotating electrical machine comprising at least one stator and a disc rotor as described above. The invention furthermore relates to a method of manufacturing a discoid rotor for an axial flow electrical machine, in particular a disc rotor according to the invention, the method comprising: (i) providing a shaft element for driving a shaft in rotation, a plurality of magnet poles and a plurality of radial reinforcing elements, each radial reinforcing element comprising a plurality of unidirectional continuous fibers oriented radially or substantially radially, the length of the continuous fibers being at least equal to the radial length magnetic poles, (ii) installing in a mold the plurality of magnet poles and the shaft element, so that the plurality of magnet poles are disposed at the periphery of the shaft element, (iii) installing in the mold the plurality of radial reinforcing elements so that said radial reinforcing elements are arranged radially between the magnet poles and arranged symmetrically; with respect to the axis of the rotor and with respect to a radial median plane of the rotor, (iv) overmolding a composite material comprising a polymer matrix and fibers arranged randomly or without preferred direction, so that: shaft element and the plurality of magnet poles are at least partially embedded in said composite material, each radial reinforcing element is at least partially embedded in said composite material. The overmoulding step (iv) may be carried out according to a compression molding technique of placing the composite material inside the hot mold, closing the mold and then applying pressure to the composite. Such a technique can be implemented easily and quickly and thus makes it possible to manufacture a large number of parts at a lower cost. This overmoulding could possibly be carried out using a transfer compression molding technique (RTM) but this technique is not preferred because it requires subsequent machining. The rotor may be composed of several superimposed radial layers of composite material: in this case the overmolding step (iv) may be repeated several times, possibly preceded by step (iii) to insert radial reinforcement elements between layers. successive composite material. The invention is now described with reference to the accompanying non-limiting drawings, in which: FIG. 1 is an exploded perspective representation of a rotor for an axial flow electric machine; FIG. 2 is a partial schematic representation of FIG. 3 is a partial diagrammatic front view of a rotor according to another embodiment of the invention, FIG. 4 is a perspective view of the invention. FIG. 1 of the rotor shown in FIG. 3; FIG. 5 is a perspective view of a rotor portion according to another embodiment; FIGS. 6 to 8 are axial sectional views of the rotor showing an example of stacking layers of composite material and reinforcing elements between two magnet poles.
    [0010] In this application, the term "axial" direction, the direction assumed to be that of the axis of the shaft, that is to say the normal direction to the plane of the rotor disk. The radial direction is defined with respect to this axial direction. The thicknesses are defined as the dimensions in the axial direction. Referring to Figure 1, a disc rotor 10 may be installed on a shaft not shown around which is or are also mounted one or two stators. When two stators are provided, these two stators can be arranged on either side of the rotor 10. The rotor 10 and the stator or stators can form an axial flow electric machine, for example an axial flow motor. In particular, this disc-shaped rotor device 10 can be used to form an axial-flow traction motor of an electric or hybrid vehicle, for example a motor vehicle.
    [0011] The disc rotor 10 comprises a plurality of magnet poles 12 disposed on the peripheral portion of the rotor 10 around a shaft element or hub 14. These magnet poles 12 are integrated in a support or cage 16 made of insulating material and rigid to ensure the mechanical strength of the assembly. The material used for this purpose is a composite material comprising a polymer matrix and fibers arranged randomly or without preferred direction. Such a support 16 of insulating material makes it possible to reduce the losses in the rotor due to the eddy currents. It can be noted that the disc rotor 10 is arranged so that the composite support 16 only closes the magnet poles 12 on their lateral surface and does not cover the hub 14 at the periphery of this hub 14. In Figure 1, the magnet poles 12 are shown outside the support 16 for clarity but are actually integrated with this support.
    [0012] A disc rotor 10 further comprises a ring or ring 18. The ring 18 is made of a material with continuous fibers. These juxtaposed continuous fibers are for example of total length greater than 50 mm. It may for example be glass fibers, carbon, polymer or mineral fibers. This ring 18 may make it possible to strengthen the entire disc rotor 10, and in particular to absorb the centrifugal forces.
    [0013] In the example shown in Figure 2, each magnet pole 12 is composed of a plurality of magnet portions 12A, 12B, 12C, 12D, 12E, 12F, 12G, 12H, 121, 12J. Each of these magnet pole portions 12A, ...., 12J comprises a strip of magnetizable material, for example NdFeB. Thus each magnet pole 12 is segmented into bars. For example, 10 arrays can be provided as in the example above, which can reduce the eddy current losses. Each of the strips 12A to 12J defines rectilinear contours so that the manufacture of these strips is relatively simple to carry and economical in that it avoids material scrap. Nevertheless trapezoidal magnet poles can also be used.
    [0014] In this example, the bars are divided into three groups of bars, each group corresponding to a particular bar length. The shorter bars are arranged closest to the tree. The magnet pole 12 shown in Figure 2 further comprises a wedge element 13 disposed against the most eccentric bar 12A. This wedge element 13 defines a rounded peripheral contour, which can make it possible to limit the mechanical stresses on the support 16. It can be envisaged to design each of the wedge members 13 so that the centrifugal force is better distributed, in particular this can to avoid areas with high stresses, especially at the corners of the bar 12A, which can be interesting especially in case of braking, acceleration, or when the rotational speed of the rotor is relatively high. The shim member 13 may be made of a composite material based on epoxy resin. This wedge member can be glued to the end of the magnet pole 12, that is to say on the bar 12A. The hub 14 may be made of steel, for example ordinary steel, stainless steel, steel with an austenitic phase, or the like. This hub 14 can be configured to transfer torque to the shaft. For this purpose, the hub can define grooves 14a. According to the invention, the rotor 10 further comprises radial reinforcing elements 20 arranged radially between the magnet poles 12.
    [0015] In the example shown, these radial reinforcing elements extend in each in a radial plane of the rotor 10, that is to say in a plane orthogonal to the axis of rotation of the rotor. Each reinforcing element 20 comprises a plurality of unidirectional continuous fibers oriented radially or substantially radially, the length of the continuous fibers being in particular at least equal to the radial length of the magnet poles. By substantially radially is meant that the fibers can form an angle of at most 5 °, in particular at most 3 °, or even at most 1 ° with the radial direction. This is for example the case when the fibers are arranged parallel to each other in a substantially rectangular layer: the laterally arranged fibers can be shifted by an angle of at most 3 ° with respect to a radial direction. Preferably, the fibers of a radial reinforcing element 20 extend in the same radial plane of the rotor.
    [0016] In the example shown in FIG. 2, each radial reinforcing element 20 is at least partially embedded in the support 16. In particular, the radial reinforcing element 20 forms a layer of thickness less than the thickness of the rotor 10, one of which surface is flush with a radial surface of the rotor 10. It will thus be noted that the composite support 16 only covers the lateral surfaces of the radial reinforcing element 20 and the surface of the radial reinforcing element 20 opposite to the surface flush with it. The various radial reinforcing elements 20 are arranged symmetrically with respect to the axis of the rotor 10 and with respect to a radial median plane of the rotor, so that the masses of the rotor 10 are balanced about its axis. Thus, in the example of FIG. 2, a radial reinforcing element 20 is disposed radially between each pair of adjacent magnet poles 12, on each radial face of the rotor 10. As can be seen in FIG. radial reinforcement 20 extend over a length at least equal to the radial length of the magnet poles 12, the fibers of the radial reinforcing elements 20 extending continuously over the entire length of each reinforcing element 20. The length Radial of a magnet pole 12 can be defined as the difference between the maximum Rmax and minimum Rmin radii of a magnet pole 12 (FIG. 2).
    [0017] In the example of FIG. 2, because of the stepped shape of the magnet poles 12, the radial reinforcing elements 20 have a width smaller than the distance separating two adjacent magnet poles 12. Figures 3 and 4 show a discoid rotor 10 'according to another embodiment, which differs from the embodiment described in Figure 2 only by the shape of the magnet poles 12' and radial reinforcing elements 20 '. In this embodiment, the magnet poles 12 'have a substantially trapezoidal shape and the composite support 16' defines branches or rods 17 'between each magnet pole 12', these branches 17 'having a maximum radius equal to maximum radius of each magnet pole 12 '. As can be seen in FIG. 4, the support 16 'thus has a star shape. The magnet poles 12 'are then held radially by the outer ring 18' against which they are directly in contact.
    [0018] With this configuration, the radial reinforcing elements 20 'can extend from one magnet pole 12' to the adjacent magnet pole 12 ', ie over the entire width of each leg 12', in a form slightly trapezoidal. As in the example described above, a radial reinforcing element 20 'extends laterally between each pair of adjacent magnet poles 12' and on each radial face of the rotor 10 '(FIG. 4). Each radial reinforcing element 20 'extends in a radial plane, its continuous fibers being substantially radial. In this example, the length of the reinforcing elements 20 'is in addition greater than the radial length of the magnet poles 12' and the continuous fibers exceed the magnet poles 12 'towards the hub 14'. In other words, one end of a reinforcing member 20 'is closer to the hub than the end of the magnet pole 12' closest to the hub 14 '.
    [0019] In the embodiments of Figures 2 to 4, the reinforcing elements 20, 20 'are arranged only on the outer radial faces of the rotor 10, 10' respectively. However, we can consider other configurations. FIG. 5 thus shows an embodiment in which the radial reinforcing elements 20 "are entirely embedded in the composite material forming the support 16", two layers of radial reinforcing elements 20 "being arranged symmetrically close to the surface of the The rotor shown partially in this figure has a shape similar to that of the rotor shown in Figures 3 and 4. The arrangement described with reference to Figure 5 could be considered for any rotor shape, including that shown in Figure 2 .
    [0020] The invention is not limited by the shape of the magnet poles or the rotor support. According to other embodiments, it is possible to provide radial reinforcing elements arranged between successive layers of composite material forming the support, a stack of layers of composite material and layers of radial reinforcing element is then obtained. rotor thickness between adjacent magnet poles. Figures 6 to 8 show examples of stacking. Thus, FIG. 6 represents an example of a stack in which a radial reinforcing element layer, denoted by the letter R, is disposed on each radial outer face of the rotor, and then a layer of radial reinforcing element R is alternated. with two layers of composite material, each designated by the letters MC, with a symmetry with respect to the radial median plane of the rotor which is represented by a layer of radial reinforcing element R.
    [0021] Alternatively, alternating a radial reinforcing element layer R with a layer of composite material MC, always respecting the symmetry with respect to the radial median plane of the rotor. In the example shown in FIG. 7, four layers of radial reinforcing elements R are alternately present with four layers of composite material MC, the median radial plane of the rotor being formed by two adjacent layers of composite material MC. In the example shown in FIG. 8, a radial reinforcing element layer R is located at the radial median plane of the rotor and an axial reinforcing element 21 is added. This axial reinforcing element 21 is of the same structure as a radial reinforcing element but its fibers extend axially instead of extending radially. In the example, the axial reinforcing element 21 extends over the entire thickness of the rotor and is secured to the radial reinforcing element 20 for example by means of a polymer material. This cross-shaped assembly can in particular be made by molding or by pultrusion.
    [0022] The arrangements described with reference to FIGS. 2 to 8 may be manufactured simply by means of a compression molding process, comprising: (i) providing a hub 14, 14 ', magnet poles 12, 12' and a plurality of radial reinforcing elements 20, 20 ', 20 "possibly axial reinforcing elements 21, (ii) installing in a mold the magnet poles 12, 12' and the hub 14, 14 ', so that the magnet poles 12, 12 'are arranged at the periphery of the hub 14, 14', (iii) installing in the mold the radial reinforcing elements 20, 20 ', 20 "so that these radial reinforcing elements 20, 20' ", 20" are arranged radially between the magnet poles 12, 12 'and arranged symmetrically with respect to the axis of the rotor and with respect to a radial median plane of the rotor, (iv) overmoulding, for example by compression molding , a composite material comprising a polymer matrix and fibers arranged randomly or without any direction vilified, so that: - the hub 14, 14 'and the magnet poles 12, 12' are at least partially embedded in the composite material forming the support 16, 16 'of the rotor 10, 10', - each element of radial reinforcement 20, 20 ', 20 "is at least partially embedded in this composite material.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Discoid rotor (10, 10 ', 10 ") for an axial flow electric machine comprising: - a plurality of magnet poles (12, 12') disposed on the peripheral portion of said rotor, - a shaft element (14 14 ') for driving a rotating shaft, in which the shaft element (14, 14') and the plurality of magnet poles (12, 12 ') are at least partially embedded in a composite material (16). , 16 ', 16 ") comprising a polymer matrix and fibers arranged randomly or without preferred direction, the rotor further comprising a plurality of radial reinforcing elements (20, 20', 20") disposed between the poles of magnets (12, 12 ') and arranged symmetrically with respect to the axis of the rotor and with respect to a radial median plane of the rotor, each radial reinforcing element (20, 20', 20 ") comprising a plurality of continuous fibers unidirectionally oriented radially or substantially radially, the length of the continuous fibers being in particular a u less than the radial length of the magnet poles, wherein each radial reinforcing element (20, 20 ', 20 ") is at least partially embedded in said composite material.
    [0002]
    2. Discoid rotor (10, 10 ', 10 ") according to claim 1, characterized in that the length of the continuous fibers of each radial reinforcing element (20, 20', 20") is greater than the radial length of the poles. of magnets (12, 12 ') and the continuous fibers extend beyond the magnet poles towards the shaft element.
    [0003]
    A disc rotor (10, 10 ', 10 ") according to any of claims 1 or 2, characterized in that the continuous fibers of each radial reinforcing element (20, 20', 20") are woven with short fibers.
    [0004]
    Discoidal rotor (10, 10 ', 10 ") according to any one of claims 1 to 3, characterized in that each radial reinforcing element (20, 20', 20") extends in a radial plane of the rotor and forms a layer of thickness less than the thickness of the rotor, said layer flush with a radial outer surface of the rotor or being disposed between two adjacent layers of composite material.
    [0005]
    5. Discoid rotor (10, 10 ', 10 ") according to any one of claims 1 to 4, characterized in that each radial reinforcing element (20, 20', 20") extends in a radial plane of the rotor, in particular from a magnet pole to the adjacent magnet pole.
    [0006]
    6. Discoid rotor (10, 10 ', 10 ") according to any one of claims 1 to 5, characterized in that at least one radial reinforcing element (20, 20', 20") is disposed between each pair of adjacent magnet poles or in that a plurality of radial reinforcing elements (20, 20 ', 20 ") are arranged between each pair of adjacent magnet poles and separated from one another by a layer of composite material.
    [0007]
    7. Discoid rotor (10, 10 ', 10 ") according to any one of claims 1 to 6, characterized in that it comprises axial reinforcing elements (21) arranged axially between the magnet poles and arranged symmetrically. relative to the axis of the rotor and with respect to a radial median plane of the rotor, each axial reinforcing member (21) extending in an axial plane of the rotor and comprising a plurality of axially oriented unidirectional continuous fibers, the length of the continuous fibers being equal to at least half the thickness of the rotor, wherein each axial reinforcing element is entirely embedded in said composite material.
    [0008]
    8. Discoid rotor (10, 10 ', 10 ") according to any one of claims 1 to 7, characterized in that the fibers of the radial reinforcing elements (20, 20', 20") or axial reinforcing elements (21) are selected from glass fibers, carbon fibers, pultruded or pre-impregnated glass fibers and pultruded or pre-impregnated carbon fibers.
    [0009]
    9. An axial flow rotating electrical machine comprising at least one stator and a disc rotor (10, 10 ', 10 ") according to any one of claims 1 to 8.
    [0010]
    A method of manufacturing a disc rotor (10, 10 ', 10 ") for an axial flow electric machine, comprising: (i) providing a shaft member (14, 14') for driving a rotating shaft, a plurality of magnet poles (12, 12 ') and a plurality of radial reinforcing elements (20, 20', 20 "), each radial reinforcing element (20, 20 ', 20") comprising a plurality of unidirectional continuous fibers oriented radially or substantially radially, the length of the continuous fibers being at least equal to the radial length of the magnet poles, (ii) installing in a mold the plurality of magnet poles (12, 12 ') and shaft element (14, 14 '), so that the plurality of magnet poles are disposed at the periphery of the shaft element, (iii) installing in the mold the plurality of radial reinforcing elements ( 20, 20 ', 20 ") so that said radial reinforcing elements (20, 20', 20") are arranged radially between the magnet poles and arranged symmetrically with respect to the axis of the rotor and with respect to a radial median plane of the rotor, (iv) overmolding a composite material comprising a polymer matrix and fibers arranged randomly or without preferred direction, so that: shaft element (14, 14 ') and the plurality of magnet poles (12, 12') are at least partially embedded in said composite material, - each radial reinforcing element (20, 20 ', 20 ") at least partially embedded in said composite material.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3014255B1|2016-01-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6674214B1|1999-08-09|2004-01-06|Perm Motor Gmbh|Electric axial flow machine|
    US20090072639A1|2007-09-19|2009-03-19|Richard Lex Seneff|Segmented composite rotor|
    DE102008050802A1|2008-10-08|2010-04-15|Pro Diskus Ag|Method and device for producing a rotor for an electric machine and use thereof|WO2018172633A1|2017-03-22|2018-09-27|Whylot Sas|Motor or electromagnetic generator comprising a rotor with magnetised structures comprising unit magnets and a stator with concentric windings|
    WO2019243996A1|2018-06-22|2019-12-26|Whylot|Rotor for an electromagnetic motor or generator with tapered branches|
    FR3086465A1|2018-09-24|2020-03-27|Whylot Sas|ROTOR FOR ELECTROMAGNETIC ENGINE OR GENERATOR WITH HUB BODY AND COMPOSITE LAYERED BRANCHES WITH DIFFERENT FOCUSED FIBERS|
    WO2021234512A1|2020-05-19|2021-11-25|Whylot|Magnet pole with a plurality of single magnets having a variable cross-section|
    FR3111244A1|2020-06-09|2021-12-10|Whylot|Magnet pole with several individual magnets encased in a layer of composite|
    EP3929951A1|2020-06-25|2021-12-29|RENAULT s.a.s.|Method and system for manufacturing magnetic poles|
    法律状态:
    2015-12-21| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-22| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-19| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-23| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-24| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1361949A|FR3014255B1|2013-12-02|2013-12-02|DISCOID ROTOR WITH REINFORCED COMPOSITE STRUCTURE FOR AXIAL FLUX ELECTRIC MACHINE|FR1361949A| FR3014255B1|2013-12-02|2013-12-02|DISCOID ROTOR WITH REINFORCED COMPOSITE STRUCTURE FOR AXIAL FLUX ELECTRIC MACHINE|
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