WO2009016157A1 - Procédé de fabrication d'un enroulement pour le stator d'une machine électrique - Google Patents

Procédé de fabrication d'un enroulement pour le stator d'une machine électrique Download PDF

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Publication number
WO2009016157A1
WO2009016157A1 PCT/EP2008/059887 EP2008059887W WO2009016157A1 WO 2009016157 A1 WO2009016157 A1 WO 2009016157A1 EP 2008059887 W EP2008059887 W EP 2008059887W WO 2009016157 A1 WO2009016157 A1 WO 2009016157A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
coil
stator
belt
machine
Prior art date
Application number
PCT/EP2008/059887
Other languages
German (de)
English (en)
Inventor
Gert Wolf
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 WO2009016157A1 publication Critical patent/WO2009016157A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435—Wound windings
    • H02K15/0478—Wave windings, undulated windings
    • H02K15/0485—Wave windings, undulated windings manufactured by shaping an annular winding
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in machines
    • H02K15/062—Windings in slots; salient pole windings
    • H02K15/065—Windings consisting of complete sections, e.g. coils, waves
    • H02K15/066—Windings consisting of complete sections, e.g. coils, waves inserted perpendicularly to the axis of the slots or inter-polar channels

Definitions

  • the invention is based on a method according to the preamble of the independent claim, as it is known for example from WO 01/54 254 Al.
  • This publication describes a method for producing an electromagnetically excitable core of an electrical machine, wherein in a first method step, a cuboid core is provided with parallel grooves on one side, in which inserted in a second process step, a core winding with its winding sides and subsequently in a third step, the core together with winding is converted into a cylindrical ring shape with radially inwardly directed grooves. In a further step, all the winding sides, which are inserted into a respective groove, are pressed into a groove shape in a tool prior to insertion into the groove, in order to achieve a high groove filling.
  • the winding can hereby optionally be designed as a loop winding or wave winding and is produced separately in belt-like form prior to introduction into the core.
  • Such windings have the disadvantage that incurred during the winding of the individual coils long production times, which make it usually necessary to use several similar winding machines in parallel. Of the Production costs for the production of the windings by known methods is therefore complicated and cost-intensive.
  • each phase is formed of two winding parts, which are first bent into a corrugated star shape and then retracted into the grooves of a cylindrical stator lamination ,
  • Each winding is first wound in a first winding means circular or polygonal and then deformed into a star whose substantially rectilinear coil sides are introduced into the grooves of the cylindrical core, wherein the bent portions of the star respectively form the winding heads.
  • winding arrangement is easier to produce than a belt-shaped winding for a flat package, the introduction of the winding in a cylindrical stator of an electric machine is difficult.
  • the inventive method with the features of the independent claim has the advantage that in a simple manner and in a short time strand windings can be made for a flat package.
  • the tool required for this purpose is robust and can be adapted to different sizes without difficulty. This is especially true for the execution of the winding as a wave winding, which can be produced with simple tools and short cycle times. Due to the distribution of the winding strands compared to a loop winding also results in terms of a more homogeneous design of the Winding head image, which in turn leads to a reduction of the flow noise during operation.
  • the outer and / or inner bends of the coil star of the wave winding by shaping jaws during winding of the coil and / or in their transformation to the star substantially already according to the desired shape of the winding heads to bend and thereby the introduction into the Stator and the design of the winding heads to further facilitate and accelerate.
  • Figure 2 shows a flat package of a stator for an electric machine according to Figure 1 before Inserting the winding and bending into its final cylindrical shape
  • FIG. 3 shows a polygonal wound coil for one strand of the stator winding
  • FIG. 4 shows a star-shaped bent coil according to FIG. 3,
  • FIG. 5 shows a cylindrically deformed coil according to FIG. 4,
  • FIG. 6 shows a belt-shaped, flattened coil according to FIG. 5
  • Figure 7a shows a cross section through a groove of the stator with a compacted winding before the round bending of the stator
  • FIG. 7b shows a cross section through a stator groove according to FIG. 7a after the round bending of the
  • FIG. 1 shows a longitudinal section through a three-phase synchronous generator 10 for motor vehicles.
  • This has inter alia a two-part metallic housing 13, which consists of a first cup-shaped bearing plate 13.1 and a second cup-shaped bearing plate 13.2.
  • the bearing plate 13.1 and the bearing plate 13.2 take in a stator 16, with an annular laminated core 17, in which inwardly open and axially extending grooves 15, a stator winding 18 is inserted.
  • the annular stator 16 surrounds with its radially inward directed surface an electromagnetically excited rotor 20, which is designed as a claw-pole rotor.
  • the rotor 20 consists inter alia of two claw-pole plates 22 and 23, on the outer periphery of each claw-pole fingers 24 and 25 extending in the axial direction are arranged.
  • Both claw pole boards 22 and 23 are arranged in the rotor 20 such that their axially extending claw pole fingers 24, 25 alternate at the periphery of the rotor 20 as N and S poles. This results in magnetically required Klauenpol thoroughlysammlung between the oppositely magnetized Klauenpolfingern 24 and 25, which extend slightly oblique to the machine axis because of tapering to its free ends towards Klauenpolfinger 24 and 25.
  • the rotor 20 is rotatably supported in the respective end shields 13.1 and 13.2, respectively, by means of a shaft 27 and one respective rolling bearing 28 located on each side. It has two axial end faces, on each of which a fan 30 is attached. These fans 30 are made in
  • fans 30 serve to allow an air exchange between the outside 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 at the axial ends of the end shields 13.1 and 13.2, via which 30 cooling air is sucked into the interior of the electric machine 10 by means of the fan.
  • This cooling air is accelerated radially outwards by the rotation of the fans 30, so that they can also pass through the cooling-air-permeable winding heads 45 on the drive side and 46 on the electronics side. This effect cools the windings.
  • the cooling air takes after passing through the winding heads, or after the flow around these winding heads, a path radially outward through openings not shown.
  • FIG. 1 on the right side there is a protective cap 47, which protects various components against environmental influences.
  • this protective cap 47 covers, for example, a slip ring assembly 49, which supplies an exciting coil winding 51, which is arranged in the ring-shaped manner and arranged on a pole core, 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 is arranged, which connects in the bearing plate 13.2 mounted minus diodes 50 and not shown in this illustration plus diodes of a rectifier 19 in the heat sink 53 in the form of a bridge circuit.
  • the direct current of the exciter winding 51 generates a stationary magnetic field to the rotor 20, but by the rotation of the rotor is formed for the stator 16, a magnetic rotating field. This rotates at synchronous speed as the rotor 20 and induces an AC voltage in each strand of the stator winding 18.
  • the individual strand alternating voltages are shifted in time relative to one another by the same phase shift angle as the strands of the stator 16 are spatially offset from one another along the stator circumference. For example, for a symmetrical three-phase winding of a three-phase machine, the three sinusoidal alternating voltages are shifted by 120 ° with respect to each other in time. The same applies to the alternating currents.
  • the regulation of the output voltage of a machine operating as an alternator is effected by a voltage regulator, which regulates the alternating voltages induced in the strings of the stator winding 18 to a constant voltage independent of the rotational speed and the load.
  • FIG. 2 shows the laminated core 17 stacked from individual lamellae 58 as a flat pack before the introduction of the stator winding 18 and before its bending into its cylindrical shape. From the figure it can be seen that the laminated core 17 ends at both ends in Polmitte a Statorpol 60. The cylindrical laminated core is welded after bending in this area.
  • FIG. 3 shows a polygonally hexagonally wound coil 62 for one strand of the stator winding 18 as a starting point for the production of a strand winding 64, as illustrated in FIG. 6 and to be explained below.
  • the winding device for producing the coil 62 only six mold jaws 70 are shown in Figure 3, via which the winding wire from the winding start 66 is wound to the winding end 68 in several turns.
  • the mold jaws 70 are arranged symmetrically as a hexagon and radially displaceable, so that on the one hand coils with different widths can be produced and on the other hand in the forming of the winding star according to Figure 4, the mold jaws are displaced inwardly when pulling the coil parts therebetween.
  • FIG. 4 shows, in a representation which is not to scale, the deformation of the coil 62 according to FIG. 3 to form a coil star 77.
  • six further shaping jaws 72 can be seen in the winding device further in the center between the shaping jaws 70, which correspond to the arrows according to the arrows 74 for forming the star shape of the coil the mold jaws 70 are radially inwardly displaceable.
  • the Form jaws 72 engage centrally between each two mold jaws 70 on the individual coil parts and pull them radially inward, while the mold jaws 70 simultaneously move radially inwardly as shown by the arrows 76 and release the coil length required for the formation of the star.
  • the number of outer mold jaws 70, or the inner mold jaws 72 corresponds in each case to the number of poles p of the machine.
  • FIG. 5 schematically shows the cylindrically deformed coil star 77 with sections 78 bent over in the axial direction 80 of the machine corresponding to FIG.
  • the individual sections 78 are symmetrical to the machine axis 80 and form a cylindrical shaft coil 82, wherein the subsequent straight coil sides 84 and the substantially semicircular winding head sections 86 already have their final shape ,
  • FIG. 6 then likewise schematically shows the principle of a flattened, belt-shaped strand winding 64 in its finished form, which is produced by bringing two opposite sections of the cylindrical coil 82 together and flattening the coil so that in each case two straight coil sides 84 for housing in each case a groove 15 of the stator 16 are adjacent.
  • the finished multi-phase winding of the machine is then formed by the stacking of m belt-shaped strand windings 64 of Figure 6 in the grooves 15 of a flat stator lamination 17, wherein the number m of the belt-shaped windings corresponds to the phase number m of the machine.
  • the coil width of the winding is denoted by w.
  • the location of the coil terminals 66,68 of different strand windings (64) within the belt can be varied.
  • FIGS. 7a and 7b respectively show a cross section through a groove 15 of the stator 16 with a winding protected by an insulation 88 having a number of strand windings 64 corresponding to the number of phases m of the machine.
  • FIG. 7a shows the stator 16 in the form of FIG Flat package
  • the figure 7b shows the groove shape after bending of the stator 16 in its cylindrical shape, wherein the groove 15 is tapered in the region of the slot opening.
  • the sum of the coil sides 84 is already trapezoidal compacted according to the cross-sectional shape of the groove 15 after bending of the stator.
  • the winding head sections 86 can also be embossed, so that the various belt-shaped strands of the individual shaft coils 82 fit better into one another.
  • the coil beginnings 66 and the coil ends 68 of the finished wave winding can still be bent into a shape suitable for the connections and the positioning.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un enroulement (18) pour le stator (16) d'une machine électrique (10), en particulier d'un alternateur triphasé pour véhicules. Ce faisant, l'enroulement (18) est formé en tant qu'enroulement d'arbre et est préfabriqué sous forme de ceinture avant d'être introduit avec ses côtés de bobine (84) dans les encoches (15) d'un paquet de stator (17) ayant d'abord une forme de paquet plat et étant ensuite courbé conjointement avec l'enroulement (18, 64) en une forme cylindrique. Chaque ligne d'enroulement (64) est enroulée ou façonnée pour obtenir une forme polygonale (62), ensuite le polygone (62) est courbé pour obtenir une bobine d'arbre de forme cylindrique (82) qui sera ensuite transformée en un enroulement (64) de type ceinture essentiellement plan et introduite dans les encoches (15) du paquet plat de stator (17).
PCT/EP2008/059887 2007-07-31 2008-07-28 Procédé de fabrication d'un enroulement pour le stator d'une machine électrique WO2009016157A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036313A DE102007036313A1 (de) 2007-07-31 2007-07-31 Verfahren zur Herstellung einer Wicklung für den Stator einer elektrischen Maschine
DE102007036313.5 2007-07-31

Publications (1)

Publication Number Publication Date
WO2009016157A1 true WO2009016157A1 (fr) 2009-02-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/059887 WO2009016157A1 (fr) 2007-07-31 2008-07-28 Procédé de fabrication d'un enroulement pour le stator d'une machine électrique

Country Status (2)

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DE (1) DE102007036313A1 (fr)
WO (1) WO2009016157A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021974A1 (fr) * 2014-08-07 2016-02-11 Valeo Electrical Systems Korea Ltd. Ensemble fil pour machine électrique tournante, et procédé correspondant pour obtenir l'ensemble fil

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947968A1 (fr) * 2009-07-09 2011-01-14 Valeo Equip Electr Moteur Bobinage d'une machine electrique tournante
DE102011080889A1 (de) 2011-08-12 2013-02-14 Robert Bosch Gmbh Elektrische Maschine sowie Verfahren zur Montage einer elektrischen Maschine
DE102011085880A1 (de) 2011-11-08 2013-05-08 Robert Bosch Gmbh Elektrische Maschine sowie Verfahren zur Herstellung einer elektrischen Maschine
DE102012201676A1 (de) * 2012-02-06 2013-08-08 Robert Bosch Gmbh Elektrische Maschine sowie Verfahren zur Montage einer elektrischen Maschine
DE102014221939A1 (de) 2014-10-28 2016-04-28 Robert Bosch Gmbh Isolierelement für die Statorwicklung einer elektrischen Maschine und eine elektrische Maschine
DE102015225758A1 (de) 2015-12-17 2017-06-22 Robert Bosch Gmbh Verfahren zum Beschichten eines elektromagnetisch erregbaren Kerns
DE102022101619A1 (de) * 2022-01-25 2023-07-27 Schaeffler Technologies AG & Co. KG Verfahren zur Umformung einer Wellenwicklung und eine nach dem Verfahren umgeformte Wellenwicklung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1211781A1 (fr) * 2000-11-24 2002-06-05 Mitsubishi Denki Kabushiki Kaisha Alternateur de véhicule automobile
US20020079772A1 (en) * 2000-12-26 2002-06-27 Mitsubishi Denki Kabushiki Kaisha Automotive alternator and a method for manufacturing a stator therefor
EP1294076A2 (fr) * 2001-09-17 2003-03-19 Mitsubishi Denki Kabushiki Kaisha Stator d'alternateur et son procédé de fabrication
US20060075627A1 (en) * 1998-10-28 2006-04-13 Mitsubishi Denki Kabushiki Kaisha Stator for an automotive alternator and method of manufacture therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817304B4 (de) 1997-12-23 2010-04-08 Robert Bosch Gmbh Verfahren und Vorrichtung zum Herstellen von Wellenwicklungen für elektrische Maschinen
EP1171945B1 (fr) 2000-01-20 2016-03-30 Robert Bosch Gmbh Procédé de production d'un noyau à excitation magnetique comprenant un enroulement de noyau, destiné à une machine électrique
FR2901925B1 (fr) * 2006-06-06 2008-08-29 Gerard Koehler Procede pour elaborer un bobinage global a poles consequents en fil, pour un secteur angulaire d'un stator d'une machine a reluctance a entrefers cylindriques et a phases angulairement reparties

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060075627A1 (en) * 1998-10-28 2006-04-13 Mitsubishi Denki Kabushiki Kaisha Stator for an automotive alternator and method of manufacture therefor
EP1211781A1 (fr) * 2000-11-24 2002-06-05 Mitsubishi Denki Kabushiki Kaisha Alternateur de véhicule automobile
US20020079772A1 (en) * 2000-12-26 2002-06-27 Mitsubishi Denki Kabushiki Kaisha Automotive alternator and a method for manufacturing a stator therefor
EP1294076A2 (fr) * 2001-09-17 2003-03-19 Mitsubishi Denki Kabushiki Kaisha Stator d'alternateur et son procédé de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021974A1 (fr) * 2014-08-07 2016-02-11 Valeo Electrical Systems Korea Ltd. Ensemble fil pour machine électrique tournante, et procédé correspondant pour obtenir l'ensemble fil
US10666105B2 (en) 2014-08-07 2020-05-26 Valeo Electrical Systems Korea Ltd. Wire assembly for rotary electric machine and corresponding method to obtain the wire assembly

Also Published As

Publication number Publication date
DE102007036313A1 (de) 2009-02-05

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