EP4352858A1 - Winding overhang guide, and associated wound rotor and winding method - Google Patents

Winding overhang guide, and associated wound rotor and winding method

Info

Publication number
EP4352858A1
EP4352858A1 EP22734536.0A EP22734536A EP4352858A1 EP 4352858 A1 EP4352858 A1 EP 4352858A1 EP 22734536 A EP22734536 A EP 22734536A EP 4352858 A1 EP4352858 A1 EP 4352858A1
Authority
EP
European Patent Office
Prior art keywords
guide
rotor
gadroons
shaft
rotor shaft
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.)
Pending
Application number
EP22734536.0A
Other languages
German (de)
French (fr)
Inventor
Emmanuel MOTTE
Daniella VIVAS-MARQUEZ
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.)
Ampere Sas
Nissan Motor Co Ltd
Original Assignee
Ampere Sas
Nissan Motor Co Ltd
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 Ampere Sas, Nissan Motor Co Ltd filed Critical Ampere Sas
Publication of EP4352858A1 publication Critical patent/EP4352858A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/527—Fastening salient pole windings or connections thereto applicable to rotors only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • the invention relates to the winding of a rotor.
  • the present invention relates more particularly to a coil head guide for winding conductive electric wires around teeth of a wound rotor, a wound rotor for a rotating electrical machine comprising such a guide and a winding method implementing such a guide.
  • a wound-rotor electric motor such as an electric machine used in an electric traction motor vehicle, is made from electrically conductive wires, such as enamelled copper wires.
  • the electrically conductive wires are wound around a core made from a stack of electrically conductive sheets
  • a winding head guide is centered and immobilized on the shaft of the rotor to guarantee the positioning of the wires during winding.
  • the guide is generally made of plastic to prevent damage to the electrical wires.
  • the plastic guide can be shrunk on the rotor shaft, which is generally metallic.
  • the document FR3084220 proposes molding a winding guide for plastic reel heads around a metal part allowing the shrinking of said part on a rotor shaft.
  • the subject of the invention is a coil head guide for winding conductive electric wires around teeth of a wound rotor, comprising a central opening intended to accommodate a rotor shaft.
  • Gadroons are regularly arranged projecting inwards from the central opening and are configured to deform against the shaft.
  • the opening is in the form of a truncated cone in the thickness of the guide, the truncated cone being configured so that when inserting the guide around the rotor shaft, the shaft first passes through the larger base of the truncated cone, the gadroons extending through the thickness of the guide and the length of the gadroons being constant.
  • the reel head guide further comprises a groove extending along the thickness of the guide between two adjacent gadroons.
  • the reel head guide comprises at least three gadroons.
  • Another subject of the invention is a wound rotor for a rotating electrical machine comprising a rotor shaft, two coil head guides as defined previously and each arranged at a different end of the rotor shaft, the gadroons of the coil heads being deformed on the rotor shaft to immobilize the rotor shaft in the openings of the guides.
  • Another subject of the invention is a method for winding conductive electric wires around the teeth of a wound rotor.
  • the method comprises the insertion of a coil head guide at one end of the rotor shaft of the rotor so that the shaft deforms regularly arranged gadroons projecting inwardly from a central opening of the reel head guide.
  • the method comprises the insertion at the other end of the rotor shaft of a second reel head guide so that the shaft deforms the gadroons of the central opening of the second head guide. of coils.
  • each coil head guide is inserted on the rotor shaft so that the rotor shaft passes through the largest base of the central opening in the shape of a truncated cone in the thickness of the guide, the gadroons extending along the thickness of the guide and having a constant length.
  • FIG.l schematically illustrates an example of a wound rotor according to the invention
  • FIG.2 schematically illustrates a partial view of one end of the rotor according to the invention
  • FIG.3 illustrates an embodiment of the coil head guide according to the invention
  • FIG.4 is an axial sectional view of the coil head guide of [Fig.3];
  • FIG.5 illustrates an embodiment of a gadroon according to the invention.
  • the [Fig.l] illustrates an example of a wound rotor 1 intended to be inserted into a stator of a rotating electrical machine.
  • the rotor 1 comprises a shaft 2 and a magnetic mass 3 mounted on the metal shaft 2.
  • the rotor 1 rotates along an axis of rotation (A).
  • the magnetic mass 3 comprises magnetic laminations forming an alternation of rotor teeth 4 and notches 5 regularly arranged over a diameter of the magnetic mass 3, two coil head guides 6 and coils 7.
  • the magnetic mass 3 here comprises eight rotor teeth 4.
  • the magnetic mass 3 may include more or less than eight teeth.
  • the coil head guides 6 are respectively arranged at different ends of the rotor shaft 2 and each comprise a circular part 8 surmounted by guide teeth 9 (not shown) regularly arranged on the periphery of the circular part 8, the number of guide teeth 9 being equal to the number of rotor teeth 4.
  • Each coil 7 is wound around a rotor tooth 4 and a guide tooth 9 of the two coil head guides 6 so as to form, for example, a rotor pole.
  • Each coil head guide 6 is immobilized on the rotor shaft 2 so that the circular part 8 and the rotor shaft 2 are concentric and so that each guide tooth 9 coincides with a rotor tooth 4.
  • the coil head guides 6 make it possible to correctly position the wires in the notch 5 during a winding step to produce the coils 7.
  • Each winding head guide 6 further comprises pins 10.
  • the pins 10 of one of the coil head guides 6 make it possible to connect part of the coils 7 together to form pairs of poles, the pins of the other coil head guide 6 not being used.
  • FIG.2 illustrates a partial view of one end of the rotor 1, the coils 7 having been removed.
  • coil head guide 6 further comprising guide grooves 11 arranged on the edges of each guide tooth 9 so as to hold the wires of the coils 7.
  • Each coil head guide 6 further comprises a central opening 12 made in the circular part 8 and housing the rotor shaft 2.
  • the central opening 12 is generally circular.
  • Gadroons 13 are regularly arranged projecting inwardly from the opening center 12.
  • the gadroons 13 are sized to be deformed against the rotor shaft 2 during insertion of the coil head guide 6 around the rotor shaft 2, being crushed against the shaft 2.
  • the central opening 12 comprises at least three gadroons 13 angularly offset by 120° with respect to the axis (A).
  • Figures 3 and 4 respectively illustrate a view and a partial section along the direction IV-IV of an embodiment of the guide 6.
  • the guide 6 further comprises grooves 14 extending along the thickness of the guide 6 between two adjacent gadroons 13.
  • the grooves 14 make it possible to have a symmetry of the rotor on both sides of the winding in order to free up a passage for the insertion of parts comprising for example the excitation ring,
  • the opening 12 is in the shape of a truncated cone in the thickness of the guide 6.
  • the truncated cone comprises a large base 20 with a diameter greater than that of the rotor shaft 4 and located at one end of the circular part 8, and a small base 21 located at the other end of the circular part 8 of smaller diameter than the large base 20.
  • the gadroons 13 extend along the thickness of the circular part 8 and are of constant length L13.
  • the guide 6 is inserted around the rotor shaft 4 so that the rotor shaft 4 first passes through the largest base 20 of the truncated cone with a clearance facilitating the centering of the guide 6 around the rotor shaft 4 when inserting the guide 6, then through the small base 21.
  • the gadroons 13 are partially crushed.
  • the [Fig.5] illustrates an embodiment of the gadroon 13.
  • the gadroon 13 includes connecting spokes.
  • the gadroon 13 has for example a length L13 of 1 mm.
  • gadroons 13 makes it possible to center and immobilize the guide 6 on the rotor shaft 4 to produce the coils 7 without generating additional mechanical stresses on the guide 6 liable to damage the guide 6 during the winding step and when G using rotor 1.
  • the guide 6 without gadroons is commonly used, it suffices to modify the mold to produce the guide 6, reducing the manufacturing costs of the guide 6.

Landscapes

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

Abstract

The invention relates to a winding overhang guide (6) for the winding of conductive electrical wires around teeth of a wound rotor, comprising a central opening (12) for receiving a rotor shaft. Gadroons (13) are arranged regularly, projecting into the central opening and configured to deform against the shaft.

Description

WO 2022/258545 PCT/EP2022/065277 WO 2022/258545 PCT/EP2022/065277
Description Description
Titre de l'invention : Guide de têtes de bobines, rotor bobiné et procédé de bobinage associés Title of the invention: Coil head guide, wound rotor and associated winding process
[0001] L'invention concerne le bobinage d'un rotor. The invention relates to the winding of a rotor.
[0002] La présente invention concerne plus particulièrement un guide de têtes de bobines pour le bobinage de fils électriques conducteurs autour de dents d’un rotor bobiné, un rotor bobiné pour machine électrique tournante comprenant un tel guide et un procédé de bobinage mettant en œuvre un tel guide. The present invention relates more particularly to a coil head guide for winding conductive electric wires around teeth of a wound rotor, a wound rotor for a rotating electrical machine comprising such a guide and a winding method implementing such a guide.
[0003] Un moteur électrique à rotor bobiné, tel qu'une machine électrique utilisée dans un véhicule automobile à traction électrique, est réalisé à partir de fils électriquement conducteurs, tels que des fils de cuivre émaillé. Les fils électriquement conducteurs sont bobinés autour d'un noyau réalisé dans un empilement de tôles électriquement conductrices [0003] A wound-rotor electric motor, such as an electric machine used in an electric traction motor vehicle, is made from electrically conductive wires, such as enamelled copper wires. The electrically conductive wires are wound around a core made from a stack of electrically conductive sheets
[0004] Afin de garantir le bon positionnement des fils pendant le bobinage du rotor, un guide de têtes de bobinage est centré et immobilisé sur l’arbre du rotor pour garantir le positionnement des fils lors du bobinage. [0004] In order to guarantee the correct positioning of the wires during the winding of the rotor, a winding head guide is centered and immobilized on the shaft of the rotor to guarantee the positioning of the wires during winding.
[0005] Le guide est généralement réalisé en matière plastique pour prévenir l’endommagement des fils électriques. [0005] The guide is generally made of plastic to prevent damage to the electrical wires.
[0006] Afin de garantir l’immobilisation du guide sur l’arbre rotorique, le guide en plastique peut être fretté sur l’arbre rotorique, généralement métallique. [0006] In order to guarantee the immobilization of the guide on the rotor shaft, the plastic guide can be shrunk on the rotor shaft, which is generally metallic.
[0007] Cependant, un tel assemblage crée des contraintes sur le guide susceptible de l’endommager et d’engendrer une panne du moteur électrique. [0007] However, such an assembly creates stresses on the guide liable to damage it and cause a breakdown of the electric motor.
[0008] Le document FR3084220 propose de mouler un guide de bobinage des têtes de bobine en plastique autour d’une pièce métallique permettant le frettage de ladite pièce sur une arbre rotorique. [0008] The document FR3084220 proposes molding a winding guide for plastic reel heads around a metal part allowing the shrinking of said part on a rotor shaft.
[0009] Cependant, la réalisation d’un tel guide de bobinage de têtes nécessite la réalisation d’une pièce métallique supplémentaire. [0009] However, the production of such a head winding guide requires the production of an additional metal part.
[0010] Il est donc proposé de pallier tout ou partie des inconvénients des guides de têtes de bobinages selon l’état de la technique, notamment en proposant un guide de têtes de bobines fiable et simple à réaliser. [0010] It is therefore proposed to overcome all or part of the drawbacks of coil head guides according to the state of the art, in particular by proposing a coil head guide that is reliable and simple to produce.
[0011] Au vu de ce qui précède, l’invention a pour objet un guide de têtes de bobines pour le bobinage de fils électriques conducteurs autour de dents d’un rotor bobiné, comprenant une ouverture centrale destinée à accueillir un arbre rotorique. [0011] In view of the foregoing, the subject of the invention is a coil head guide for winding conductive electric wires around teeth of a wound rotor, comprising a central opening intended to accommodate a rotor shaft.
[0012] Des godrons sont régulièrement disposés en saillie vers l’intérieur de l’ouverture centrale et sont configurés pour se déformer contre l’arbre. [0012] Gadroons are regularly arranged projecting inwards from the central opening and are configured to deform against the shaft.
[0013] De préférence, l’ouverture est en forme de cône tronqué dans l’épaisseur du guide, le cône tronqué étant configuré de sorte que lors de l’insertion du guide autour de l’arbre rotorique, l’arbre passe d’abord à travers la plus grande base du cône tronqué, les godrons s’étendant selon l’épaisseur du guide et la longueur des godrons étant constante. [0013] Preferably, the opening is in the form of a truncated cone in the thickness of the guide, the truncated cone being configured so that when inserting the guide around the rotor shaft, the shaft first passes through the larger base of the truncated cone, the gadroons extending through the thickness of the guide and the length of the gadroons being constant.
[0014] Avantageusement, le guide de têtes de bobines comprend en outre une rainure s’étendant selon l’épaisseur du guide entre deux godrons adjacents. [0014] Advantageously, the reel head guide further comprises a groove extending along the thickness of the guide between two adjacent gadroons.
[0015] De préférence, le guide de têtes de bobines comprend au moins trois godrons. [0015] Preferably, the reel head guide comprises at least three gadroons.
[0016] L’invention a également pour objet un rotor bobiné pour machine électrique tournante comprenant un arbre rotorique, deux guides de tête de bobines tels que définis précédemment et disposés chacun à une extrémité différente de l’arbre rotorique, les godrons des guides de têtes de bobines étant déformés sur l’arbre rotorique pour immobiliser l’arbre rotorique dans les ouvertures des guides. [0016] Another subject of the invention is a wound rotor for a rotating electrical machine comprising a rotor shaft, two coil head guides as defined previously and each arranged at a different end of the rotor shaft, the gadroons of the coil heads being deformed on the rotor shaft to immobilize the rotor shaft in the openings of the guides.
[0017] L’invention a encore pour objet un procédé de bobinage de fils électriques conducteurs autour de dents d’un rotor bobiné. [0017] Another subject of the invention is a method for winding conductive electric wires around the teeth of a wound rotor.
[0018] Le procédé comprend l’insertion d’un guide de têtes de bobines à une extrémité de l’arbre rotorique du rotor de sorte que l’arbre déforme des godrons régulièrement disposés en saillie vers l’intérieur d’une ouverture centrale du guide de têtes de bobines. [0018] The method comprises the insertion of a coil head guide at one end of the rotor shaft of the rotor so that the shaft deforms regularly arranged gadroons projecting inwardly from a central opening of the reel head guide.
[0019] De préférence, le procédé comprend l’insertion à l’autre extrémité de l’arbre rotorique d’un deuxième guide de têtes de bobines de sorte que l’arbre déforme les godrons de l’ouverture centrale du deuxième guide de têtes de bobines. [0019] Preferably, the method comprises the insertion at the other end of the rotor shaft of a second reel head guide so that the shaft deforms the gadroons of the central opening of the second head guide. of coils.
[0020] Avantageusement, chaque guide de têtes de bobines est inséré sur l’arbre rotorique de sorte que l’arbre rotorique passe à travers la plus grande base de l’ouverture centrale en forme de cône tronqué dans l’épaisseur du guide, les godrons s’étendant selon l’épaisseur du guide et ayant une longueur constante. Advantageously, each coil head guide is inserted on the rotor shaft so that the rotor shaft passes through the largest base of the central opening in the shape of a truncated cone in the thickness of the guide, the gadroons extending along the thickness of the guide and having a constant length.
[0021] D’autres buts, caractéristiques et avantages de l’invention apparaîtront à la lecture de la description suivante, donnée uniquement à titre d’exemple non limitatif, et faite en référence aux dessins annexés sur lesquels : Other aims, characteristics and advantages of the invention will appear on reading the following description, given solely by way of non-limiting example, and made with reference to the appended drawings in which:
[0022] [Fig.l] illustre schématiquement un exemple d’un rotor bobiné selon l’invention ; [0022] [Fig.l] schematically illustrates an example of a wound rotor according to the invention;
[0023] [Fig.2] illustre schématiquement une vue partielle d’une extrémité du rotor selon l’invention ; [0023] [Fig.2] schematically illustrates a partial view of one end of the rotor according to the invention;
[0024] [Fig.3] illustre un mode de réalisation du guide de têtes de bobines selon l’invention ; [0024] [Fig.3] illustrates an embodiment of the coil head guide according to the invention;
[0025] [Fig.4] est une vue en coupe axiale du guide de têtes de bobine de la [Fig.3] ; et[0025] [Fig.4] is an axial sectional view of the coil head guide of [Fig.3]; and
[0026] [Fig.5] illustre un exemple de réalisation d’un godron selon l’invention. [0026] [Fig.5] illustrates an embodiment of a gadroon according to the invention.
[0027] La [Fig.l] illustre un exemple de rotor bobiné 1 destiné à être inséré dans un stator d’une machine électrique tournante. [0027] The [Fig.l] illustrates an example of a wound rotor 1 intended to be inserted into a stator of a rotating electrical machine.
[0028] Le rotor 1 comprend un arbre 2 et une masse magnétique 3 montée sur l’arbre mé tallique 2. [0029] Le rotor 1 tourne selon un axe de rotation (A). The rotor 1 comprises a shaft 2 and a magnetic mass 3 mounted on the metal shaft 2. The rotor 1 rotates along an axis of rotation (A).
[0030] La masse magnétique 3 comprend des tôles magnétiques formant une alternance de dents rotoriques 4 et d’encoches 5 régulièrement disposées sur un diamètre de la masse magnétique 3, deux guides de têtes de bobines 6 et des bobines 7. The magnetic mass 3 comprises magnetic laminations forming an alternation of rotor teeth 4 and notches 5 regularly arranged over a diameter of the magnetic mass 3, two coil head guides 6 and coils 7.
[0031] La masse magnétique 3 comprend ici huit dents rotoriques 4. The magnetic mass 3 here comprises eight rotor teeth 4.
[0032] En variante, la masse magnétique 3 peut comprendre plus ou moins de huit dents. Alternatively, the magnetic mass 3 may include more or less than eight teeth.
[0033] Les guides de têtes de bobines 6 sont respectivement disposés à des extrémités dif férentes de l’arbre rotorique 2 et comprennent chacun une partie circulaire 8 surmontée de dents de guidage 9 (non représentées) régulièrement disposées sur la périphérie de la partie circulaire 8, le nombre de dents de guidage 9 étant égal au nombre de dents rotoriques 4. The coil head guides 6 are respectively arranged at different ends of the rotor shaft 2 and each comprise a circular part 8 surmounted by guide teeth 9 (not shown) regularly arranged on the periphery of the circular part 8, the number of guide teeth 9 being equal to the number of rotor teeth 4.
[0034] Chaque bobine 7 est enroulée autour d’une dent rotorique 4 et d’une dent de guidage 9 des deux guides de têtes de bobines 6 de manière à former par exemple un pôle rotorique. Each coil 7 is wound around a rotor tooth 4 and a guide tooth 9 of the two coil head guides 6 so as to form, for example, a rotor pole.
[0035] Chaque guide de têtes de bobines 6 est immobilisé sur l’arbre rotorique 2 de sorte que la partie circulaire 8 et l’arbre rotorique 2 sont concentriques et de sorte que chaque dent de guidage 9 coïncide avec une dent rotorique 4. Each coil head guide 6 is immobilized on the rotor shaft 2 so that the circular part 8 and the rotor shaft 2 are concentric and so that each guide tooth 9 coincides with a rotor tooth 4.
[0036] Les guides de têtes de bobines 6 permettent de positionner correctement des fils dans l’encoche 5 pendant une étape de bobinage pour réaliser les bobines 7. [0036] The coil head guides 6 make it possible to correctly position the wires in the notch 5 during a winding step to produce the coils 7.
[0037] Chaque guide de têtes de bobinage 6 comporte en outre des pions 10. [0037] Each winding head guide 6 further comprises pins 10.
[0038] Les pions 10 de l’un des guides de têtes de bobines 6 permettent de raccorder une partie des bobines 7 entre elles pour former des paires de pôles, les pions de l’autre guide de têtes de bobines 6 n’étant pas utilisés. The pins 10 of one of the coil head guides 6 make it possible to connect part of the coils 7 together to form pairs of poles, the pins of the other coil head guide 6 not being used.
[0039] Comme les guides de têtes de bobines 6 en plastique sont réalisés par moulage, un seul moule est nécessaire pour réaliser les guides de têtes de bobines 6 indé pendamment de G utilisation des pions 10. [0039] As the plastic coil head guides 6 are made by molding, a single mold is necessary to produce the coil head guides 6 independently of the use of the pins 10.
[0040] La [Fig.2] illustre une vue partielle d’une extrémité du rotor 1, les bobines 7 ayant été retirées. [0040] The [Fig.2] illustrates a partial view of one end of the rotor 1, the coils 7 having been removed.
[0041] On retrouve le guide de têtes de bobines 6 comprenant en outre des rainures de guidage 11 disposées sur les bords de chaque dent de guidage 9 de manière à maintenir les fils des bobines 7. We find the coil head guide 6 further comprising guide grooves 11 arranged on the edges of each guide tooth 9 so as to hold the wires of the coils 7.
[0042] Le positionnement des guides de têtes de bobines 6 sur l’arbre rotorique 2 permet de fixer de manière répétable le début de chaque bobine 7 dans les rainures de guidage 11 de chaque dent de guidage 9. [0042] The positioning of the coil head guides 6 on the rotor shaft 2 makes it possible to fix the start of each coil 7 in a repeatable manner in the guide grooves 11 of each guide tooth 9.
[0043] Chaque guide de têtes de bobines 6 comprend en outre une ouverture centrale 12 réalisée dans la partie circulaire 8 et logeant l’arbre rotorique 2. [0043] Each coil head guide 6 further comprises a central opening 12 made in the circular part 8 and housing the rotor shaft 2.
[0044] L’ouverture centrale 12 est globalement circulaire. The central opening 12 is generally circular.
[0045] Des godrons 13 sont régulièrement disposés en saillie vers l’intérieur de l’ouverture centrale 12. [0045] Gadroons 13 are regularly arranged projecting inwardly from the opening center 12.
[0046] Les godrons 13 sont dimensionnés pour être déformés contre l’arbre rotorique 2 lors de insertion du guide de têtes de bobines 6 autour de l’arbre rotorique 2, en étant écrasés contre l’arbre 2. [0046] The gadroons 13 are sized to be deformed against the rotor shaft 2 during insertion of the coil head guide 6 around the rotor shaft 2, being crushed against the shaft 2.
[0047] La déformation des godrons 13 sur l’arbre rotorique 4 immobilise le guide 6 autour de l’arbre rotorique 2 par frottement des godrons 13 sur l’arbre rotorique 4 sans transmettre de contrainte supplémentaire à l’ensemble du guide 6, réduisant le risque de casse du guide 6 lors du bobinage des bobines 7 et lors de la rotation du rotor 1. [0047] The deformation of the gadroons 13 on the rotor shaft 4 immobilizes the guide 6 around the rotor shaft 2 by friction of the gadroons 13 on the rotor shaft 4 without transmitting any additional stress to the entire guide 6, reducing the risk of breakage of the guide 6 during the winding of the coils 7 and during the rotation of the rotor 1.
[0048] Afin de centrer le guide 6 sur l’arbre rotorique 2, l’ouverture centrale 12 comprend au moins trois godrons 13 décalés angulairement de 120° par rapport à l’axe (A). In order to center the guide 6 on the rotor shaft 2, the central opening 12 comprises at least three gadroons 13 angularly offset by 120° with respect to the axis (A).
[0049] Les figures 3 et 4 illustrent respectivement une vue et une coupe partielle selon la direction IV-IV d’un mode de réalisation du guide 6. [0049] Figures 3 and 4 respectively illustrate a view and a partial section along the direction IV-IV of an embodiment of the guide 6.
[0050] Le guide 6 comprend en outre des rainures 14 s’étendant selon l’épaisseur du guide 6 entre deux godrons 13 adjacents. The guide 6 further comprises grooves 14 extending along the thickness of the guide 6 between two adjacent gadroons 13.
[0051] Les rainures 14 permettent d’avoir une symétrie du rotor des deux côtés du bobinage afin de libérer un passage pour l’insertion de pièces comprenant par exemple la bague d’excitation, The grooves 14 make it possible to have a symmetry of the rotor on both sides of the winding in order to free up a passage for the insertion of parts comprising for example the excitation ring,
[0052] Comme visible sur la [Fig.4], l’ouverture 12 est en forme de cône tronqué dans l’épaisseur du guide 6. [0052] As visible in [Fig.4], the opening 12 is in the shape of a truncated cone in the thickness of the guide 6.
[0053] Le cône tronqué comprend une grande base 20 de diamètre supérieur à celui de l’arbre rotorique 4 et située à une extrémité de la partie circulaire 8, et une petite base 21 située à l’autre extrémité de la partie circulaire 8 de diamètre inférieur à celui de la grande base 20. The truncated cone comprises a large base 20 with a diameter greater than that of the rotor shaft 4 and located at one end of the circular part 8, and a small base 21 located at the other end of the circular part 8 of smaller diameter than the large base 20.
[0054] Les godrons 13 s’étendent selon l’épaisseur de la partie circulaire 8 et sont de longueur L13 constante. The gadroons 13 extend along the thickness of the circular part 8 and are of constant length L13.
[0055] Le guide 6 est inséré autour de l’arbre rotorique 4 de sorte que l’arbre rotorique 4 passe d’abord à travers la plus grande base 20 du cône tronqué avec un jeu facilitant le centrage du guide 6 autour de l’arbre rotorique 4 lors de l’insertion du guide 6, puis à travers la petite base 21. The guide 6 is inserted around the rotor shaft 4 so that the rotor shaft 4 first passes through the largest base 20 of the truncated cone with a clearance facilitating the centering of the guide 6 around the rotor shaft 4 when inserting the guide 6, then through the small base 21.
[0056] Les godrons 13 sont partiellement écrasés. The gadroons 13 are partially crushed.
[0057] La [Fig.5] illustre un exemple de réalisation du godron 13. [0057] The [Fig.5] illustrates an embodiment of the gadroon 13.
[0058] Comme le guide 6 est réalisé par moulage, le godron 13 comprend des rayons de rac cordement. As the guide 6 is made by molding, the gadroon 13 includes connecting spokes.
[0059] Le godron 13 a par exemple une longueur L13 de 1 mm. The gadroon 13 has for example a length L13 of 1 mm.
[0060] L’ajout de godrons 13 permet de centrer et d’immobiliser le guide 6 sur l’arbre rotorique 4 pour réaliser les bobines 7 sans engendrer de contraintes mécaniques sup plémentaires sur le guide 6 susceptible d’endommager le guide 6 lors de l’étape de bobinage et lors de G utilisation du rotor 1. [0061] En outre, comme le guide 6 sans godrons est couramment utilisé, il suffit de modifier le moule pour réaliser le guide 6 réduisant les coûts de fabrication du guide 6. [0060] The addition of gadroons 13 makes it possible to center and immobilize the guide 6 on the rotor shaft 4 to produce the coils 7 without generating additional mechanical stresses on the guide 6 liable to damage the guide 6 during the winding step and when G using rotor 1. [0061] In addition, as the guide 6 without gadroons is commonly used, it suffices to modify the mold to produce the guide 6, reducing the manufacturing costs of the guide 6.

Claims

Revendications Claims
[Revendication 1] Guide (6) de têtes de bobines pour le bobinage de fils électriques conducteurs autour de dents (4) d’un rotor bobiné (1), comprenant une ouverture centrale (12) destinée à accueillir un arbre rotorique (2), ca ractérisé en ce que des godrons (13) sont régulièrement disposés en saillie vers l’intérieur de l’ouverture centrale et sont configurés pour se déformer contre l’arbre. [Claim 1] Coil head guide (6) for winding conductive electric wires around teeth (4) of a wound rotor (1), comprising a central opening (12) intended to accommodate a rotor shaft (2) , ca acterized in that gadroons (13) are regularly arranged projecting inwards from the central opening and are configured to deform against the shaft.
[Revendication 2] Guide selon la revendication 1, dans lequel l’ouverture (12) est en forme de cône tronqué dans l’épaisseur du guide (6), le cône tronqué étant configuré de sorte que lors de l’insertion du guide autour de l’arbre rotorique (2), l’arbre passe d’abord à travers la plus grande base (20) du cône tronqué, les godrons s’étendant selon l’épaisseur du guide et la longueur des godrons étant constante. [Claim 2] Guide according to claim 1, in which the opening (12) is in the form of a truncated cone in the thickness of the guide (6), the truncated cone being configured so that when inserting the guide around of the rotor shaft (2), the shaft first passes through the largest base (20) of the truncated cone, the gadroons extending according to the thickness of the guide and the length of the gadroons being constant.
[Revendication 3] Guide selon l’une des revendications 1 et 2, comprenant en outre une rainure (14) s’étendant selon l’épaisseur du guide entre deux godrons (13) adjacents. [Claim 3] Guide according to one of claims 1 and 2, further comprising a groove (14) extending along the thickness of the guide between two adjacent gadroons (13).
[Revendication 4] Guide selon l’une quelconque des revendications 1 à 3, comprenant au moins trois godrons (13). [Claim 4] Guide according to any one of Claims 1 to 3, comprising at least three gadroons (13).
[Revendication 5] Rotor (1) bobiné pour machine électrique tournante comprenant un arbre rotorique (2), deux guides (6) de tête de bobines selon l’une quelconque des revendications 1 à 4 disposés chacun à une extrémité différente de l’arbre rotorique, les godrons (13) des guides de têtes de bobines étant déformés sur l’arbre rotorique pour immobiliser l’arbre rotorique dans les ouvertures (12) des guides (6). [Claim 5] Wound rotor (1) for a rotating electrical machine comprising a rotor shaft (2), two winding head guides (6) according to any one of claims 1 to 4 each disposed at a different end of the shaft rotor, the gadroons (13) of the coil head guides being deformed on the rotor shaft to immobilize the rotor shaft in the openings (12) of the guides (6).
[Revendication 6] Procédé de bobinage de fils électriques conducteurs autour de dents (4) d’un rotor (1) bobiné, caractérisé en ce que le procédé comprend l’insertion d’un guide (6) de têtes de bobines à une extrémité de l’arbre rotorique du rotor de sorte que l’arbre déforme des godrons (13) régu lièrement disposés en saillie vers l’intérieur d’une ouverture centrale du guide de têtes de bobines. [Claim 6] Method of winding conductive electric wires around teeth (4) of a coiled rotor (1), characterized in that the method comprises the insertion of a guide (6) of coil heads at one end of the rotor shaft of the rotor so that the shaft deforms gadroons (13) regularly arranged projecting inwardly from a central opening of the coil head guide.
[Revendication 7] Procédé selon la revendication 6, comprenant l’insertion à l’autre extrémité de l’arbre rotorique d’un deuxième guide (6) de têtes de bobines de sorte que l’arbre déforme les godrons (13) de l’ouverture centrale (12) du deuxième guide de têtes de bobines. [Claim 7] Method according to claim 6, comprising the insertion at the other end of the rotor shaft of a second guide (6) of bobbin heads so that the shaft deforms the gadroons (13) of the central opening (12) of the second reel head guide.
[Revendication 8] Procédé selon l’une des revendications 6 et 7, dans lequel chaque guide (6) de têtes de bobines est inséré sur l’arbre rotorique (2) de sorte que l’arbre rotorique passe d’abord à travers la plus grande base (20) de l’ouverture centrale (12) en forme de cône tronqué dans l’épaisseur du guide, les godrons (13) s’étendant selon l’épaisseur du guide et ayant une longueur constante. [Claim 8] Method according to one of Claims 6 and 7, in which each bobbin head guide (6) is inserted on the rotor shaft (2) so that the rotor shaft first passes through the largest base (20) of the central opening (12) in the form of a truncated cone in the thickness of the guide, the gadroons (13) extending along the thickness of the guide and having a constant length.
EP22734536.0A 2021-06-08 2022-06-03 Winding overhang guide, and associated wound rotor and winding method Pending EP4352858A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2106024A FR3123770A1 (en) 2021-06-08 2021-06-08 Coil head guide, wound rotor and associated winding process
PCT/EP2022/065277 WO2022258545A1 (en) 2021-06-08 2022-06-03 Winding overhang guide, and associated wound rotor and winding method

Publications (1)

Publication Number Publication Date
EP4352858A1 true EP4352858A1 (en) 2024-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22734536.0A Pending EP4352858A1 (en) 2021-06-08 2022-06-03 Winding overhang guide, and associated wound rotor and winding method

Country Status (5)

Country Link
EP (1) EP4352858A1 (en)
KR (1) KR20240018425A (en)
CN (1) CN117242682A (en)
FR (1) FR3123770A1 (en)
WO (1) WO2022258545A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4700229B2 (en) * 2001-07-05 2011-06-15 アスモ株式会社 Method for manufacturing armature of rotating electric machine
DE102004011094A1 (en) * 2004-03-06 2005-09-22 Robert Bosch Gmbh Main element for an electrical machine
DE102006032714A1 (en) * 2006-07-14 2008-01-24 BSH Bosch und Siemens Hausgeräte GmbH Runner with insulation sleeve on the rotor shaft
FR2984034B1 (en) * 2011-12-08 2014-08-22 Renault Sa DEVICE FOR GUIDING A SET OF ELECTRIC WIRES FOR AN ELECTRIC MOTOR ROTOR
KR101664047B1 (en) * 2014-12-03 2016-10-10 현대자동차 주식회사 Rotor structure of wrsm motor
FR3084220B1 (en) 2018-07-23 2020-06-19 Renault S.A.S WIRE GUIDING DEVICE FOR ROTOR OF SYNCHRONOUS ELECTRIC MACHINE OF ROTOR REEL TYPE
JP7331476B2 (en) * 2019-06-12 2023-08-23 株式会社アイシン Rotating electric machine and its manufacturing method

Also Published As

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KR20240018425A (en) 2024-02-13
FR3123770A1 (en) 2022-12-09
CN117242682A (en) 2023-12-15
WO2022258545A1 (en) 2022-12-15

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