EP2364523A2 - Dispositif pour fixer des aimants - Google Patents

Dispositif pour fixer des aimants

Info

Publication number
EP2364523A2
EP2364523A2 EP09743891A EP09743891A EP2364523A2 EP 2364523 A2 EP2364523 A2 EP 2364523A2 EP 09743891 A EP09743891 A EP 09743891A EP 09743891 A EP09743891 A EP 09743891A EP 2364523 A2 EP2364523 A2 EP 2364523A2
Authority
EP
European Patent Office
Prior art keywords
electrical machine
holding element
longitudinal
spring
bead
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09743891A
Other languages
German (de)
English (en)
Inventor
Christa Bauch
Martin Schulz
Oliver Eckert
Ngoc-Thach Nguyen
Christian Dayan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEG Automotive Germany GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2364523A2 publication Critical patent/EP2364523A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
    • H02K21/044—Rotor of the claw pole type

Definitions

  • the electric machine is in particular an electrically excited claw pole generator for a motor vehicle.
  • the claw pole generator comprises a rotor having a plurality of axially aligned poles varying in the circumferential direction of the magnetization and having between the poles arranged permanent magnets for increasing the power and for reducing the leakage flux.
  • the permanent magnets are secured by means of non-magnetizable plates held in poles on both sides. These sheets each have at least one additional lock, with which they are supported in the axial direction of the poles.
  • the additional detents are designed, for example, as sheet metal tabs which are bent or angled and are resiliently clamped on at least one axial end portion of the poles.
  • DE 199 51 115 Al also relates to an electrical machine.
  • This is a generator for a motor vehicle, with an excitation system and a plurality of electrically excited single poles in the stator or in the rotor.
  • the stator and the rotor have the shape of circumferentially axially aligned, with circumferentially alternating polarity of electromagnetically excited poles.
  • permanent magnets are found in the spaces between the poles. The permanent magnets are inserted into the mentioned spaces.
  • the attachment of the permanent magnets on the stator or on the rotor is such that the permanent magnets are each held by a magnetically non-energizable holding element, said holding element is tangentially held axially on both sides by caulking in Polnuten and a Polnut longitudinally in a pole and a Polnut longitudinally in a counter-pole is incorporated.
  • the holding element covers the respective permanent magnet in the case of a rotor in the radial direction to the stator or in the case of a stator in the radial direction towards the rotor with a base region. At both opposite ends the base region has bent tabs which exert a clamping force on axial end faces of the permanent magnet used.
  • corrugated shaped holding elements are introduced in guide grooves on the sides of the claws. These are able to compensate for the installation tolerances very well and allow by means of a slot-centrally positioned insertion tongue a self-sealing of the groove in which the resiliently formed holding elements are to be mounted, which considerably improves the ease of assembly.
  • a variant in which the grooves are formed axially continuous allows it to insert the permanent magnets with spring-trained holding element in the already fully assembled rotor. If the grooves are not made continuously, bilateral axial stops are defined on the claw pole flanks. In this case, a paired construction with a small connecting strap around the claw tip of a claw pole can be made.
  • the magnets are axially fixed by the corrugated sheet spring-like holding elements and fixed in the radial direction and positioned.
  • the spring-shaped holding elements are preferably those which have a corrugated sheet-like pattern and have parallel transverse waves. This embodiment provides a very good rigidity despite thin wall thickness against bending as protection of the magnets against the very high centrifugal forces occurring at high speed. Due to the thin wall thickness, in which the corrugated, spring-like holding elements are made, the intrinsic load is very low.
  • the spring properties, ie the elasticity of the spring-shaped holding element allows accurate positioning and fixation.
  • the correspondingly shaped, resiliently formed holding element of non-electromagnetic spring material prevents electromagnetic short circuits.
  • the electric machine proposed according to the invention has significantly reduced power losses due to smaller air gaps and a large surface overlap between magnet and claw flanks.
  • the robustness of the electrical machine against mechanical, electrical and thermal loads is considerably increased. Due to definable positioning, relatively small mechanical cal and electromagnetic imbalances and thus reduced noise due to a high axial, radial and tangential positioning accuracy of the permanent magnets.
  • the inventively proposed solution opens up the possibility of magnetizing the magnets after assembly.
  • the inventively proposed, substantially corrugated sheet-like configured resiliently formed holding elements for parallelepiped magnets without inner end faces of the jaws can be used. Radially, these magnets have linear supports. This design leads to a good centrifugal load distribution and reduces the strength requirements of the spring-trained holding elements. The number and design of the waves can be varied well depending on the magnet length.
  • the retaining plates on longitudinally shaped, or depressed or embossed surfaces, which provide a support plane for the magnet against the risk of breakage at high centrifugal loads.
  • Molded parallel longitudinal grooves or beads offer a very good rigidity or correspondingly high bending moment of inertia against bending as protection of the magnets against the very high centrifugal forces occurring.
  • FIG. 1 shows a section through an electrical machine, in particular a generator
  • FIG. 2 shows a frontal view of the claw pairing of the rotor or of the rotor
  • FIG. 3 shows a plan view or side view of the claw-shaped pole arrangement
  • FIG. 4 shows a detailed view of the permanent magnets fixed by spring-shaped holding elements
  • FIG. 5 shows a view of the permanent magnets with the holder
  • Figure 6 shows a corrugated structure of the spring-formed holding elements
  • FIG. 7 shows the parallelepiped-shaped permanent magnet and the retaining element formed across it
  • FIG. 8 is a perspective view of the plan view of Figure 3 on an enlarged scale
  • FIG. 9 shows a further embodiment variant of the permanent magnets, for example fixing spring-formed holding elements
  • FIG. 10 shows a view from below
  • FIG. 11 shows an enlarged perspective top view of the spring-formed holding element according to the variant embodiment in FIG. 9,
  • FIG. 12 shows a side view of the arrangement shown in FIG. 11,
  • FIG. 13 shows a side view of only the spring-shaped holding element according to the embodiment in FIG. 9, FIG.
  • FIG. 14 shows a plan view of the resiliently formed retaining element
  • FIG. 15 is a view of the laterally bent portions thereof
  • FIG. 16 shows a claw half shell of the electric machine with the variant for the radial installation
  • FIG. 17 shows a plan view of a further embodiment of the permanent-magnet-fixing double-spring-shaped holding elements
  • FIG. 18 side view and top view of the embodiment of the spring-trained holding elements according to Figure 17 and
  • Figure 19 is a plan view of a provided by longitudinal beads resiliently formed retaining element
  • 20A and B show a spatial view and a partial section of a further embodiment of a holding element
  • FIGS. 21A and 21B show two views of a further exemplary embodiment of a retaining element
  • FIGS. 22A and 22B show two views of a further embodiment of a holding element
  • Figure 23 is a perspective view of another embodiment of a holding element.
  • FIG. 1 shows a cross section through an electric machine 10, here designed as a generator or alternator for motor vehicles.
  • This electrical machine 10 has inter alia a two-part housing 13, which comprises a first end shield 13.1 and a second end shield 13.2.
  • the first bearing plate 13.1 and the second bearing plate 13.2 take in a stator 16, which consists on the one hand of a substantially annular stator iron package 17 and in the radially inwardly directed, axially extending grooves a stator winding 18 is inserted or retracted.
  • the annular stator 16 surrounds with its radially inwardly directed grooved surface a rotor 20 which is formed as a claw-pole rotor.
  • the rotor 20 comprises inter alia two claw-pole boards 22 and 23, at the outer side of which are circumferentially extending in the axial direction or bent trained Klauenpolfmger 24, 25 are arranged. Both claw-pole plates 22 and 23 are arranged in the rotor 20 such that their claw-pole grippers 24 and 25, which extend in the axial direction, alternate with one another on the circumference of the rotor 20. This results in magnetically required intermediate or separation spaces between the mutually magnetized claw magnets 24 and 25, which are referred to as claw pole interspaces.
  • the rotor 20 is mounted in the respective end shields 13.1 and 13.2 by means of a shaft 27 and one respective rolling bearing 28 located on each side of the rotor.
  • the rotor 20 has a total of two axial end faces, on each of which a fan 30 is attached.
  • This fan 30 essentially consists of a wave plate-shaped or disc-shaped section, starting from the fan blades in a known manner.
  • These fans 30 serve to allow an air exchange between the outside of the electric machine 10 and the interior of the electric machine 10 via openings 40 in the end shields 13.1 and 13.2.
  • the openings 40 are provided substantially at the axial ends of the bearing shields 13.1 and 13.2, via which cooling air is sucked into the interior of the electric machine 10 by means of the fan 30.
  • This cooling air is accelerated by the rotation of the fan 30 radially outward, so that it can pass through the winding overhang 45. By this effect, the winding overhang 45 is cooled.
  • the cooling air takes after passing through the winding overhang 45 or after flowing around this winding overhang 45 a way to the outside radially, not shown here in Figure 1 openings.
  • FIG 1 is located on the right side of a protective cap 47, which protects various components against environmental influences.
  • this protective cap 47 covers, for example, a slip ring assembly 49 which serves to supply a field winding 51 with exciting current.
  • a heat sink 53 Around this slip ring assembly 49 around a heat sink 53 is arranged, which acts as a positive heat sink here.
  • the bearing plate acts 13.2.
  • a connection plate 56 Between the bearing plate 13.2 and the heat sink 53 there is a connection plate 56, which serves to connect in the bearing plate 13.2 minus diode 58 and not shown here in this illustration plus diodes in the heat sink 53 to each other and thus to form a bridge circuit.
  • FIG. 2 shows a plan view of a rotor block of the electric machine 10.
  • the claw-pole plate 22 of the rotor 20 is shown, from which the claw-pole fingers designated by the reference numeral 24 extend into the plane of the drawing.
  • Between the individual axially conical Klauenpolfingern 24 are intermediate spaces 74, as shown in Figure 3, in which permanent magnets 66 are arranged.
  • the permanent magnets 66 (FIG. 4) serve to reduce the leakage flux.
  • the permanent magnets 66 are fastened by retaining elements 60, which are resilient according to the invention in the spaces 74 between the individual Klauenpolfingern 24 and 25 of the electric machine 10.
  • the spring-shaped retaining elements 60 proposed according to the invention are inserted into mutually assigning pole grooves 92, 94, as indicated in the front view in FIG.
  • the pole grooves 92 and 94 are substantially formed as slots and extend in the axial direction along the conical Polfinger flanks in the plane of the drawing as shown in Figure 2.
  • the plan view according to FIG. 3 shows that the rotor 20 of the electric machine 10 shown there has two claw-pole boards 22 and 23 inserted one inside the other.
  • the gaps 74 are bounded by mutually facing Polnuten 92, 94, which are executed in an alternating sequence in the sides of the Klauenpolfinger 24 and 25 respectively.
  • spring-shaped retaining elements 60 are inserted into the pole grooves 92, 94 between the individual claw-pole fingers 24, 25.
  • the spring-trained holding elements 60 have at their ends in each case bent executed clamping bracket 64, which fix the covered in the plan view of Figure 3 by the resilient holding member 60 permanent magnet 66.
  • the permanent magnet 66 fixed by each spring-holding element 60 is not shown in the intermediate spaces 74 in order to reduce the leakage flux.
  • the individual spring-shaped holding elements 60 have a profiling in waveform 62.
  • the number and shape of the waves are dependent on the required magnet length, clamping force and speed.
  • the profiling in waveform 62 extends from a clamping bracket 64 in the axial direction of the resiliently formed retaining element 60 to the opposite resiliently formed clamping bracket 64.
  • the resiliently formed clamping bracket 64 are the permanent magnets 66 fixed at their respective end faces and nestle with at least one longitudinal side of the underside of the spring-shaped holding member 60 at.
  • the spring-shaped retaining elements 60 are inserted into the pole grooves 92, 94.
  • the spring-trained holding elements 60 are widened in width with respect to the width of the clamping strap 64, so that the laterally extending edge regions of the spring-shaped holding elements 60 protrude into the respective Polnuten 92, 94 and a reliable mechanical fixation of the permanent magnets 66 even at allow high and high speeds of the electric machine 10.
  • FIG. 4 shows a perspective representation of the permanent magnets 66 fixed by the spring-shaped retaining elements 60.
  • the resiliently formed retaining elements 60 fix permanent magnets 66 to their end faces 70 by the clamping brackets 64. Due to the widened design of the spring-shaped retaining element 60, its edge regions are inserted into the pole grooves 92, 94 shown in FIG. 4 and formed in the individual claw magnets 24 and 25, respectively, and fixed reliably there.
  • the resiliently formed holding elements 60 form a reliable mechanical captive-formed fixation for the permanent magnets 66, which conform to the underside 72 of the spring-shaped holding elements 60 during a rotation of the rotor 20 of the electric machine 10 ,
  • the permanent magnets 66 are cuboidal and the resilient clamping bracket 64 clamp the opposite end faces 70 of a permanent magnet to be fixed 66.
  • the permanent magnet 66 is located, as can be seen in FIG. 5, with at least one of its longitudinal sides 68 on the underside 72 of the spring-shaped holding element 60.
  • the width of the spring-shaped holding element 60 exceeds the width of the permanent magnet 66 to be fixed. This is due to the fact that the spring-shaped holding element 60 engages the side edges of the profiling in waveform 62 into the pole grooves 92, 94 the Klauenpolfmger 24, 25 is pushed into it.
  • the profiling formed in waveform 62 advantageously makes it possible to absorb elastic deformations of the claw members 24, 25 at high rotational speeds and to compensate for deformations that occur due to the centrifugal force load, so that the spring-shaped retaining elements 60 proposed according to the invention fixed permanent magnets 66 are mechanically relieved. Also occurring deformations due to thermally induced loads, be it in the Klauenpolfmgern 24 and 25, can be easily absorbed due to the profiled design of the inventively proposed, spring-shaped holding elements 60. Furthermore, a smaller mechanical imbalance can be achieved by the shaping of the spring-shaped retaining elements 60 proposed according to the invention, as a result of which a reduction in the noise level can be achieved.
  • the pole grooves 92 and 94 on the sides of the claw magnets 24, 25 in the region of the intermediate spaces 74 are preferably machined, but can also be formed without cutting because of resilient adaptation.
  • the formed in the holding elements 60 parallel transverse waves profiling in waveform 62 provide a very good stiffness against bending and protection of positioned at the bottom 72 permanent magnet 66. Due to the very thin wall thickness, the intrinsic load is very low and the resilient design allows accurate fixation and positioning.
  • the spring-formed retaining element 60 is preferably made of non-electromagnetic and stainless material and allows a resilient axial and radial positioning of the permanent magnets 66 to be protected in the intermediate spaces 74 against high centrifugal forces and corrosion.
  • the representation according to FIG. 7 shows that the permanent magnet 66 can be cuboid in shape, for example. Radially, the permanent magnets 66 may have line-shaped supports. This construction has good centrifugal force distribution characteristics, whereby the strength requirements of the spring-formed holding member 60 can be reduced.
  • the illustration according to FIG. 8 shows how the spring-shaped retaining elements 60 are inserted into the pole grooves 92, 94. The pole grooves 92, 94 are adjacent to each other side edges of the Klauenpolfmger 24 and 25, which lie along the intermediate spaces 94 to each other.
  • FIG. 9 shows that in a preferred embodiment of the spring-shaped holding elements 60 proposed according to the invention, they can have a longitudinal reinforcement, for example in the form of a longitudinal bead 76, in the region of their profiling in waveform 62. From the illustration according to FIG. 9, it can be seen that the longitudinal bead 76 is introduced into the upper side of the retaining element 62 profiled in a wave-shaped manner, for example stamped or embossed. As shown in Figure 9, the longitudinal bead 76 extends centrally from one of the clamp 64 to the other clamp 64th
  • FIG. 10 shows that, due to the embossing or introduction of the longitudinal bead 76 into the material of the spring-shaped holding element 60, on its underside 72, a flat bead bottom 78 results.
  • a flat bead bottom 78 results.
  • two spring beads 76 extending next to each other or extending in the longitudinal direction can be embodied in the spring-shaped retaining element 60 proposed according to the invention.
  • FIG. 11 shows that the longitudinal bead 76 extends from one of the clamping brackets 64 to the other clamping bracket 64 and that the permanent magnet 66, which is embodied in a cuboid shape, is fixed by the clamping brackets 64 on its end faces 70. With one of its longitudinal sides 68 of the permanent magnet 66 is located in cuboid on the underside of the newly formed bead bottom 78 as shown in Figure 10. This can be seen very well from the side views of the spring-shaped holding element 60 proposed according to the invention as shown in FIGS. 12 and 13.
  • a longitudinal side 68 of the permanent magnet 66 conforms to the underside of the bead bottom 78 of the resiliently embodied holding element 60. At the opposite end faces 70, the permanent magnet 66 is enclosed by the resiliently formed clamping brackets 64.
  • FIG. 13 shows that the clamping brackets 64 are angled in a bracket angle 80 which, with respect to the bead bottom 78, ie the underside 72 of the resiliently formed retaining element 60 in the range between 0 ° and 60 °, preferably between 15 ° and 45 °.
  • the sides of the waveguide profiling 62 may be opened or closed, e.g. B. be potted with a filler.
  • FIG. 13 shows that due to the introduction of the longitudinal bead 76 into the profiling in waveform 62, a plane bead bottom 78 results, which represents a plane surface against which at least one longitudinal side 68 of the permanent magnet 66 snuggles during rotation of the rotor 20.
  • the longitudinal bead 76 is introduced into the profiling in waveform 62.
  • Edge regions of the profiling in waveform 62 are inserted into the correspondingly formed Polnuten 92, 94 of the Klauenpolfmger 24, 25 and thus locked there.
  • a width 84 of the resiliently formed holding element 60 exceeds the width of the clamping strap 64 (cf. illustration according to FIG. 15).
  • the side portions of the profiling in waveform 62 serve to lock the spring-formed holding element 60 in the pole grooves 92, 94 of the claw pole 24, 25th
  • FIG. 15 shows that a clamping strap width 82 of the clamping clip 64 exceeds the width 84 (cf. illustration according to FIG. 14) of the resiliently embodied holding element 60 by approximately twice.
  • the clamping strap width 82 is dimensioned so that it almost fully covers the end faces 70 of the permanent magnet 66 in the assembled state of the spring-shaped holding element 60 in the pole grooves 92, 94, so that its reliable fixation in the gaps 74 between the Klauenpolfmgern 24, 25 also at high peripheral speeds and high centrifugal forces is ensured.
  • FIG. 16 shows a further embodiment variant of the spring-shaped holding element 60 proposed according to the invention, which is to be provided especially for radial assembly from above or from outside to inside in the finished rotor assemblies.
  • the claw-pole plate 22 comprises a number of claw-pole grippers 24, corresponding free spaces are formed between the claw-pole grippers 24, 25, in which the claw-pole grippers 24 engage a further claw-pole plate 23.
  • the permanent magnets 66 are likewise fixed by spring-shaped holding elements 60 which, however, have a longitudinal ribbing 86 extending against the bending risk of the magnets in comparison with the first embodiment of the resiliently configured holding elements 60 shown in FIG. From the illustration according to FIG.
  • the spring-shaped holding elements 60 In contrast to the first embodiment of the spring-shaped holding elements 60 shown in FIGS. 9, 10, 11, 12, 13, 14 and 15, the spring-shaped holding elements 60, as shown in FIG. 16, have hooks 88 in which a magnet holder 96 is trained.
  • the magnetic holder 96 is formed as an undercut, so that the permanent magnets 66 are simply clipped into the spring-formed holding elements 60 as shown in Figure 16 and immediately assume their mounting position.
  • the resiliently shaped retaining elements 60, as shown in FIG. 16, are preferably in the radial direction, i. from the outer periphery, into the spaces 74 between the individual Klauenpolfmgern 24 as shown in the representation in Figure 16 mounted.
  • the hooks 88 Due to the elasticity of the hooks 88, they snap into correspondingly formed undercuts of the first claw-pole plate 22 and are reliably fixed by abutment of the hooks 88 on projections corresponding to their geometry even at high rotational speeds and consequently high centrifugal forces.
  • FIG. 17 shows that a longitudinal ribbing 86 is formed on the longitudinal side 68 of the resiliently embodied holding element 60 covering the permanent magnet 66, to which an overgrip 90 in each case adjoins.
  • the overlap 90 engages in the Polnuten 92, 94, which is executed on the individual Klauenpolfmgern 24, 25 of the two Klauenpolplatinen 22, 23.
  • the longitudinal ribbing 86 can comprise, for example, two beads 98 extending from one hook 88 to the opposite hook 88.
  • FIG. 18 shows that above the hooks 88 for fixing the spring-formed holding elements 60 in the respective claw-pole plate 22, 23 there is a magnetic holder 96, which defines the pre-mounted permanent magnet 66 to be fixed in the spring element 60 proposed according to the invention Situation convicted and keeps in this.
  • FIG. 18 also shows the laterally extending grips 90 with which the further embodiment variant shown in FIGS. 16, 17, 18 and 19 is shown the erf vor disciplineenndungswash proposed, resiliently shaped holding elements 60 in spaces 74 of the Klauenpolplatinen 22, 23 is fixed.
  • this further embodiment variant of the spring-shaped holding element 60 proposed according to the invention has two longitudinal corrugations 76 which extend symmetrically to one another and which represent the longitudinal ribbing 86.
  • the resiliently shaped hooks 88 serve for the reliable fixing of the stamped, preferably stamped, spring-shaped holding element 60, which is preferably formed as a holding plate, in the claw-pole plate 22 or 23.
  • 16 substantially permanent magnets 66 are shown, they can also be formed in geometries deviating from the cuboid shape, for example with chamfered surfaces.
  • the geometry of the permanent magnets 66 is selected so that they correspond to the corresponding contour of the claw poles 24, 25.
  • two pairs of permanent assemblies may be formed or a continuous ring with all the permanent magnets 66 may be represented by connecting straps which enclose and support below or centrally in recesses in the region of the tips of the claw members 24, 25.
  • the first embodiment of the present invention proposed resiliently formed retaining member 60, the mounting axially in the spaces 74 substantially from the end face 70 of the claw pole board 22, 23, the further, second embodiment of erf ⁇ ndungsloom can be proposed, resiliently formed holding elements 60 in the radial direction, ie from the periphery into the gaps 74 of the claw pole board 22, 23 clip.
  • FIG. 2OA is a holding element 60 made of non-or almost non-magnetic Metallg. Steel sheet shown, the transversely to the longitudinal direction of the intermediate space 74 has a wave shape 62. As a longitudinal direction, the direction is considered here, which runs substantially parallel to the flanks of Klauenpolfmger 24.
  • a wave trough 100 Centrally above the permanent magnet 66 is a wave trough 100, on which the permanent magnet 66 is supported with its radially outwardly directed upper side. On both sides of this wave trough 100 there are profiled wave beads 103 in the longitudinal direction, which have a radially inwardly directed edge 106 and on which the permanent magnet 66 is supported.
  • tension rods 109 which extend substantially radially inward and longitudinally at all four corners of the permanent magnet 66 in the longitudinal direction of a displacement relative to the tension rods 109th prevent.
  • the tie rods 109 are joined integrally with holding vertebrae 112.
  • the holding vortices 112 are each bent away from the permanent magnets 66 in such a way that they have a profile that is essentially round in the longitudinal direction.
  • Each two retaining vertebrae 112 on a longitudinally extending longitudinal side of the permanent magnet 66 are aligned with each other and are inserted into a not shown here Polnut 92 a Klauenpolf ⁇ ngers 24.
  • the retaining vertebrae 112 are provided with a chamfer 115. Between two circumferentially adjacent holding vortices 112 is in each case a clamping bracket 64, which clamps with a longitudinally opposite clamping bracket 64 between them a permanent magnet 66.
  • FIG 21 A is a holding element 60 made of non-or almost non-magnetic Metallg. Steel sheet shown, which also has a waveform 62 transverse to the longitudinal direction of the intermediate space 74. As a longitudinal direction, the direction is considered here, which runs substantially parallel to the flanks of Klauenpolfmger 24.
  • a wave trough 100 Centrally above the permanent magnet 66 is a wave trough 100, on which the permanent magnet 66 is supported with its radially outwardly directed upper side. On both sides of this wave trough 100 there are longitudinally profiled wave beads 103, which merge into a retaining roll 120.
  • the retaining rollers 120 are made in one piece with the retaining element 60.
  • the holding rollers 120 are wound such that a winding end 123 bears against the permanent magnet 66, wherein the holding roller 120 is arranged between a winding end 123 and the wave bead 103 in a pole groove 92.
  • the holding member 60 is supported on both sides with a respective retaining roller 120 in a respective pole groove 92.
  • each retaining roller 120 is provided on the end side with a chamfer 115.
  • a slot 126 is introduced between a retaining roller 120 and a trough 100.
  • Each retaining roller 120 preferably runs parallel to an edge of a cuboid permanent magnet 66.
  • FIG. 22A shows a side view of a further holding element 60 made of non-or almost non-magnetic metal or sheet steel which likewise has a wave shape 62 in the longitudinal direction of the intermediate space 74.
  • the holding element 60 consists of two parts which are pressed together at several points. On the one hand from an upper part 130, which has the waveform 130 and at one end a clamping bracket 64. To facilitate insertion, the upper part 130 is provided at one end with a taper 133, which facilitates insertion into the pole grooves 92. Between the upper part 130 and the permanent magnet 66 there is a lower part 136, see also FIG. 22B.
  • the lower part 136 optionally also optionally has a clamping bracket 64, the z. B. is adapted to the shape of the one Klemmbü- gel 64 of the upper part 130. Both at the one end of the permanent magnet 66 arranged clamping bracket 64 of the upper part 130 and lower part 136 then preferably press together on one end of the permanent magnet 66th
  • FIG. 23 shows a further holding element 60.
  • This holding element 60 is formed by prototyping and consists for example of a preferably fiber-reinforced thermoplastic or thermosetting plastic.
  • the holding element 60 also has a waveform 62 transverse to the longitudinal direction of the intermediate space 74. As a longitudinal direction, the direction is considered here, which runs substantially parallel to the flanks of Klauenpolfmger 24.
  • Centrally above the permanent magnet 66 is a trough 100, against which the permanent magnet 66 is supported with its radially outwardly directed upper side. On both sides of this wave trough 100 there are profiled corrugation beads 103 in the longitudinal direction which merge into a holding angle 150.
  • the brackets 150 are formed integrally with the retaining element 60 and each engage in one of the Polnuten 92 a.
  • the holding element 60 is supported on both sides with a respective bracket 150.
  • Two bays 153 each go towards a pole groove 92 of the wave trough 100.
  • snap-in hooks 165 connected in one piece to the holding element 60 and connected to the holding element 60.
  • Retaining arms 168 which are designed to be much more yielding than other areas of the retaining element 60, extend from the retaining angles 150 in the direction of escape (groove 92). At the end there are retaining lugs 171, which secure by means of a cheek surface 174 a stationary position of the holding member 60 with the permanent magnet 66 in the Polnuten 92. The holding arm 168 still engages the pole groove 92, while the cheek surface 174 conforms to a side surface of a claw pole root. By this clinging to Klauenpolwurzeln on both sides of the gap 74, the position of the support member 60 and thus the permanent magnet 66 is clearly secured.
  • the pole groove 92 extends in the side surface of the claw pole root.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne une machine électrique (10), en particulier une génératrice pour un véhicule automobile, comprenant un système excitateur constitué d'une pluralité de pôles individuels excités électriquement. Les pôles individuels peuvent être réalisés dans le stator (16) ou dans le rotor (20) sous forme de pôles (22, 23; 24, 25) à excitation électromagnétique, orientés axialement et radialement sur la circonférence et polarisés en alternance en sens périphérique. L'invention vise à améliorer la puissance ainsi qu'à réduire le flux magnétique de fuite. A cet effet, on place dans les interstices (74) entre les pôles alternés (24, 25) des aimants permanents (66) qui sont maintenus au moyen d'un élément de retenue (60) non excitable magnétiquement. Cet élément de retenue est maintenu des deux côtés dans des rainures polaires (92, 94). L'élément de retenue (60) est élastique radialement, axialement et tangentiellement et présente un profil ondulé (62) et/ou mouluré (76, 78; 86).
EP09743891A 2008-10-24 2009-10-26 Dispositif pour fixer des aimants Withdrawn EP2364523A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043144.3A DE102008043144B4 (de) 2008-10-24 2008-10-24 Vorrichtung zur Fixierung von Magneten
PCT/EP2009/064083 WO2010046501A2 (fr) 2008-10-24 2009-10-26 Dispositif pour fixer des aimants

Publications (1)

Publication Number Publication Date
EP2364523A2 true EP2364523A2 (fr) 2011-09-14

Family

ID=42054844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09743891A Withdrawn EP2364523A2 (fr) 2008-10-24 2009-10-26 Dispositif pour fixer des aimants

Country Status (7)

Country Link
US (1) US9124164B2 (fr)
EP (1) EP2364523A2 (fr)
JP (1) JP5971947B2 (fr)
CN (1) CN102265482B (fr)
BR (1) BRPI0919872A2 (fr)
DE (1) DE102008043144B4 (fr)
WO (1) WO2010046501A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3531434A1 (fr) * 2018-02-26 2019-08-28 Honeywell International Inc. Support d'aimant et ensemble de support d'aimant

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010048310A1 (de) * 2010-10-14 2012-04-19 Continental Automotive Gmbh Rotor für einen elektrischen Motor
DE102011080475A1 (de) * 2011-08-05 2013-02-07 Robert Bosch Gmbh Vorrichtung zum Fixieren von Magneten
DE102011085118A1 (de) 2011-10-24 2013-04-25 Robert Bosch Gmbh Halterung für elektrische Maschinen
DE102012202529A1 (de) * 2012-02-20 2013-08-22 Robert Bosch Gmbh Dauermagnetfixierung mittels einer Einfassung
CN102710042B (zh) * 2012-04-26 2014-04-02 锦州汉拿电机有限公司 带永磁体转子
FR3013529B1 (fr) * 2013-11-20 2017-04-14 Valeo Equip Electr Moteur Lames de maintien des aimants
JP6446938B2 (ja) * 2014-02-25 2019-01-09 新日鐵住金株式会社 渦電流式減速装置
FR3040834B1 (fr) * 2015-09-03 2017-08-25 Valeo Equip Electr Moteur Corps de rotor a aimants permanents et machine electrique tournante comportant un tel corps
US10742079B2 (en) * 2016-05-24 2020-08-11 Mitsubishi Electric Corporation Rotary electric machine
TWI592588B (zh) 2016-07-12 2017-07-21 財團法人工業技術研究院 電磁彈簧及包含此電磁彈簧的彈性致動器
JP2018107901A (ja) * 2016-12-26 2018-07-05 株式会社デンソー 回転電機の回転子及び回転電機
US20220216753A1 (en) * 2019-04-25 2022-07-07 Hitachi Astemo, Ltd. Rotor for rotary electric machine and rotary electric machine
DE102019213448A1 (de) * 2019-09-04 2021-03-04 Volkswagen Aktiengesellschaft Rotor für eine elektrische Maschine mit stegförmigen Halteelementen
CN113014012B (zh) * 2021-02-09 2022-03-01 苏蓉 一种转子组件及盘式电机
CN112928877A (zh) * 2021-03-15 2021-06-08 慕贝尔汽车部件（太仓）有限公司 电动机转子铁芯中紧固永磁体的方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048944A1 (de) * 2007-08-02 2009-02-19 REMY TECHNOLOGIES LLC., Pendleton Magnetaufnahme- und -Arretiersystem für Hybridrotoren

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196189A (en) * 1936-07-28 1940-04-09 Company The Stamford Trust Electrical motor
US3790830A (en) * 1972-08-09 1974-02-05 Gen Motors Corp Magnet mounting clip for a dynamoelectric machine
US4594525A (en) * 1983-06-27 1986-06-10 General Electric Company Rotatable assembly for a dynamoelectric machine
US4625392A (en) * 1985-09-05 1986-12-02 General Electric Company Method of manufacturing a molded rotatable assembly for dynamoelectric machines
JPS62203537A (ja) * 1986-02-28 1987-09-08 Hitachi Ltd 電動機用回転子
US4683393A (en) * 1986-05-23 1987-07-28 General Electric Company Reinforced rotor assembly and method of making same
JPS63134585U (fr) * 1987-02-23 1988-09-02
US4850100A (en) * 1987-12-23 1989-07-25 General Electric Company Method of making a rotor assembly
JP3237217B2 (ja) * 1991-08-08 2001-12-10 株式会社デンソー 車両用交流発電機の回転子
JP3446313B2 (ja) * 1993-08-30 2003-09-16 株式会社デンソー 回転電機の回転子
JP3972396B2 (ja) * 1997-01-16 2007-09-05 株式会社デンソー ランデルコア型回転電機
DE19642784A1 (de) * 1996-10-17 1998-04-23 Bosch Gmbh Robert Klauenpolgenerator
JP3743113B2 (ja) * 1997-05-07 2006-02-08 株式会社デンソー 回転電機
DE19802786A1 (de) * 1998-01-26 1999-07-29 Bosch Gmbh Robert Synchronmaschine, insbesondere Generator oder Motor für ein Kraftfahrzeug
FR2784248B1 (fr) * 1998-10-02 2000-12-22 Valeo Equip Electr Moteur Alternateur pour vehicule avec rattrapage de jeu sur les aimants interpolaires
JP4118471B2 (ja) * 1999-09-07 2008-07-16 三菱電機株式会社 ロータ構造
DE19951115A1 (de) * 1999-10-23 2001-05-03 Bosch Gmbh Robert Elektrische Maschine
JP3541934B2 (ja) * 2000-01-11 2004-07-14 三菱電機株式会社 交流発電機の回転子
JP3974315B2 (ja) * 2000-07-25 2007-09-12 三菱電機株式会社 交流発電機
JP3740375B2 (ja) * 2001-02-27 2006-02-01 株式会社日立製作所 車両用交流発電機
EP1237256A3 (fr) * 2001-02-28 2004-11-10 Hitachi, Ltd. Mécanisme de transmission pour alternateur pour véhicule automobile
US6548932B1 (en) * 2001-10-31 2003-04-15 Electric Boat Corporation Nonmagnetic magnet retention channel arrangement for high speed rotors
DE10155223A1 (de) 2001-11-09 2003-05-22 Bosch Gmbh Robert Elektrische Maschine, insbesondere Drehstromgenerator für Kraftfahrzeuge und deren Herstellverfahren
JP3882725B2 (ja) * 2002-03-12 2007-02-21 株式会社デンソー 車両用回転電機
JP3743431B2 (ja) * 2002-04-26 2006-02-08 株式会社日立製作所 車両用交流発電機及びその回転子
US6744165B2 (en) * 2002-10-29 2004-06-01 Visteon Global Technologies, Inc. High power permanent magnet hybrid alternator rotor
JP4186759B2 (ja) 2003-09-03 2008-11-26 株式会社日立製作所 車両用交流発電機
BRPI0402303A (pt) * 2004-06-07 2006-01-17 Brasil Compressores Sa Processo de montagem de magnetos em rotor de motor elétrico e rotor de motor elétrico
JP4396471B2 (ja) * 2004-10-01 2010-01-13 株式会社デンソー 車両用回転電機およびその製造方法
JP4291298B2 (ja) * 2005-05-13 2009-07-08 三菱電機株式会社 回転電機
JP4524657B2 (ja) * 2005-09-01 2010-08-18 株式会社デンソー 回転子の磁石保護構造及び磁石保護方法
JP4654970B2 (ja) * 2006-05-15 2011-03-23 株式会社デンソー 車両用交流発電機
JP4692428B2 (ja) * 2006-07-21 2011-06-01 株式会社デンソー 車両用回転電機の回転子とその製造方法
JP4735980B2 (ja) * 2006-08-23 2011-07-27 株式会社デンソー 車両用交流発電機及びその製造方法
DE102006041981A1 (de) * 2006-09-07 2008-03-27 Robert Bosch Gmbh Elektrische Maschine
JP5076521B2 (ja) * 2007-01-31 2012-11-21 株式会社デンソー スタータ用モータ
US20080216962A1 (en) * 2007-03-09 2008-09-11 Steinke Richard A Bead alignment clip and system for its use for locating and maintaining a tire bead positioning onto a tire core build man-drel in forming a core for manufacturing an elastomeric tire
US7863790B2 (en) * 2007-05-23 2011-01-04 Nidec Sankyo Corporation Motor
JP2009183042A (ja) * 2008-01-30 2009-08-13 Denso Corp 車両用交流発電機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048944A1 (de) * 2007-08-02 2009-02-19 REMY TECHNOLOGIES LLC., Pendleton Magnetaufnahme- und -Arretiersystem für Hybridrotoren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3531434A1 (fr) * 2018-02-26 2019-08-28 Honeywell International Inc. Support d'aimant et ensemble de support d'aimant

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CN102265482A (zh) 2011-11-30
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US20120032548A1 (en) 2012-02-09
DE102008043144A1 (de) 2010-04-29
WO2010046501A3 (fr) 2011-04-21
JP5971947B2 (ja) 2016-08-17
WO2010046501A2 (fr) 2010-04-29
CN102265482B (zh) 2015-08-19
US9124164B2 (en) 2015-09-01

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