WO2008071147A2 - Moteur électrique et procédé de fabrication - Google Patents

Moteur électrique et procédé de fabrication Download PDF

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Publication number
WO2008071147A2
WO2008071147A2 PCT/DE2007/002117 DE2007002117W WO2008071147A2 WO 2008071147 A2 WO2008071147 A2 WO 2008071147A2 DE 2007002117 W DE2007002117 W DE 2007002117W WO 2008071147 A2 WO2008071147 A2 WO 2008071147A2
Authority
WO
WIPO (PCT)
Prior art keywords
soft magnetic
magnetic core
coil
winding
teeth
Prior art date
Application number
PCT/DE2007/002117
Other languages
German (de)
English (en)
Other versions
WO2008071147A3 (fr
Inventor
Wolfgang Hill
Original Assignee
Luk Lamellen Und Kupplungsbau Beteiligungs Kg
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 Luk Lamellen Und Kupplungsbau Beteiligungs Kg filed Critical Luk Lamellen Und Kupplungsbau Beteiligungs Kg
Priority to DE112007003031T priority Critical patent/DE112007003031A5/de
Publication of WO2008071147A2 publication Critical patent/WO2008071147A2/fr
Publication of WO2008071147A3 publication Critical patent/WO2008071147A3/fr

Links

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
    • H02K15/0442—Loop windings
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings

Definitions

  • the invention relates to a method for producing an electric machine, which has a primary part and a secondary part movably mounted for movement in a direction of movement, wherein for the primary part a soft magnetic core is provided with mutually spaced apart teeth in the direction of movement, and wherein the soft magnetic core is provided with a polyphase winding, each having at least two pole coils for each winding phase, each of which delimits a tooth associated therewith the soft magnetic core.
  • the invention relates to an electrical machine having a primary part and a relative thereto movable in a direction of movement secondary part, wherein the primary part has a soft magnetic core with mutually offset in the direction of movement, spaced apart by grooves teeth and a multi-phase winding, for each winding phase in each case at least has two pole coils which each define an associated tooth of the soft magnetic core.
  • a method of the type mentioned is known from practice.
  • the individual pole coils are made as air coils with an inner cavity and then attached to the teeth of a soft magnetic stator core.
  • the ends of the coil wires of the pole coils are connected by means of interconnecting elements with each other and with electrical connections of the machine.
  • the interconnection usually requires manual or complicated to be automated joining method for connecting the coil wire ends with the interconnection elements.
  • the production and installation of the interconnection elements means an additional cost.
  • Another disadvantage is that the interconnection elements increase the volume of the electrical machine.
  • This object is achieved with respect to the method in that for each winding phase in each case an air-coil chain is prefabricated, which have provided for the winding phase in question, an inner cavity having pole coils and connecting conductors, via which the pole coils are connected in series, that the prefabricated air Each positioned on the soft magnetic core and the pole coils are plugged with their coil opening respectively on their associated tooth of the soft magnetic core, and that the coil chains are then fixed on the soft magnetic core.
  • the pole coils are therefore already electrically connected to each other before they are positioned on the teeth of the soft magnetic core.
  • the pole coils are therefore already electrically connected to each other before they are positioned on the teeth of the soft magnetic core.
  • the space saved by eliminating the Verschaltungsimplantation space can be used for the pole coils.
  • In the existing space of the electrical machine so much conductor material can be accommodated so that the machine allows a correspondingly large torque and / or a correspondingly high performance.
  • At least one wound body which has at least one number of winding teeth spaced apart from the number of pole coils of an air-coil chain whose dimensions correspond approximately to those of the corresponding teeth of the soft-magnetic core, that the winding teeth for producing the air Coil chain are wound orthocrocally with coil wire such that the pole coils of the air-coil chain are connected to each other without interruption, and that the air-coil chain thus obtained is then removed from the bobbin.
  • the bobbin can be designed with respect to its geometry so that the points at which the pole coils are to be wound, for a Wi nkel tool, such. a winding needle are easily accessible.
  • the winding body is preferably made of a material having a greater strength and / or a greater wall thickness than the soft magnetic core.
  • the pole coils are pressed prior to attachment to the soft magnetic core to reduce its coil cross-section, preferably with the aid of the winding body and / or a pressing tool.
  • the connecting conductors are bent after winding the winding teeth with the coil wire in a predetermined position, preferably such that they are arranged after positioning the coil chains on the soft magnetic core laterally next to the Wickeköpfen the Polspulen and before connecting the teeth together yoke of the soft magnetic core are.
  • the space in straight extension of the yoke in front of this space can then be used to accommodate the connection conductor.
  • the electric machine thus allows a short design.
  • a simple assembly of the coil chains results in the soft magnetic core.
  • the coil wire is coated with a baked enamel layer before the winding teeth are wound, and if the baked enamel layer is baked after the winding teeth have been wound by the application of heat.
  • the pressing of the pole coils is preferably carried out during the baking of the baked enamel layer.
  • the pole coil can be deformed more easily than at room temperature.
  • an assembly teeth for receiving the coil chains exhibiting mounting body is provided, the coil chains are mounted in one of their later mounting position corresponding to the soft magnetic core layer on the mounting teeth, the mounting body thereafter together with the coil chains arranged thereon the soft magnetic core is positioned such that the pole coils are respectively opposed to their associated teeth of the soft magnetic body, and wherein the coil chains are then displaced from the mounting body in the direction of the teeth of the soft magnetic core, that the pole coils each one of them - A - associated tooth of the soft magnetic core.
  • the prefabricated coil chain can thereby be mounted even easier on the soft magnetic core.
  • the primary part is used after fixing the coil chains on the soft magnetic core in a stator housing and a located between the primary part and the stator housing mounting gap filled with a potting compound and the potting compound is then solidified.
  • the resulting during operation of the electrical machine in the winding heat loss can then be removed via the potting compound directly and without the detour via the soft magnetic core to the stator and from there to the environment and / or connected to the stator heat sink.
  • the electric machine can thus deliver a high continuous torque without overheating.
  • the soft magnetic core is designed annular disk-shaped, wherein the teeth protrude in the axial direction of the annular disc at this.
  • the soft magnetic core is designed annular, wherein the teeth protrude in the radial direction on the outer circumference of the soft magnetic core at this.
  • the method can also be used to produce an external rotor with an air gap through which the magnetic field flows.
  • the above object is achieved with respect to the electric machine in that the coil wires of the pole coils of each phase are each integrally connected to each other.
  • the pole coils are integrally interconnecting connecting conductor laterally next to Wickeköpfen the Pole coils and in front of a teeth interconnecting yoke of the soft magnetic core are arranged.
  • the electric machine thus allows a short design.
  • the turns of the pole coils are each connected to each other by a baked enamel and / or a potting compound.
  • the pole coils are then substantially dimensionally stable and allow in the manufacture of the electrical machine easy handling and mounting on the soft magnetic core.
  • the electric machine is preferably designed as a disk rotor.
  • the primary part may have a single disc-shaped soft magnetic core or two disk-shaped soft magnetic cores (intermediate rotor) arranged on both sides of the secondary part.
  • FIG. 1 shows a longitudinal section through a one-sided axial flow machine with single-pole winding
  • FIG. 3 shows a longitudinal section through a pancake with intermediate rotor and single-pole winding
  • FIG. 4 shows a cross section through the pancake shown in FIG. 3, the cross-sectional plane passing through the rotor of the pancake rotor, FIG.
  • FIG. 5 shows a magnetically soft stator core of the primary part of the axial flux machine with coil chains mounted on the core
  • FIG. 6 shows an impression device for demolding a coil chain from a wound body
  • 7 shows a mounting body, are arranged on the winding body in pre-assembly, 8 shows the mounting body after winding with coil wire,
  • FIG. 9 shows the mounting body positioned on a soft magnetic core with the coil chains mounted thereon, FIG.
  • Fig. 11 is a side view of the primary part.
  • An electrical machine 1 designed as a pancake electric motor has a primary part (stator) and a secondary part (rotor), which are mounted so as to be rotatable relative to one another about a rotational axis 3 by means of a bearing in a direction of movement marked by the double arrow 2.
  • the primary part has a single, approximately annular disk-shaped soft magnetic core having a number of axially projecting on a yoke 4 teeth 5, which in the circumferential direction by radially to the rotation axis 3 extending grooves. 6 spaced apart from each other.
  • a single-pole winding is arranged, which has a plurality of winding phases.
  • Each winding phase has in each case a plurality of pole coils 7, which are connected in series.
  • the coil wires of the pole coils 7 of each winding phase are each integrally connected to each other.
  • Fig. 2 it can be seen that each pole coil is associated with a tooth 5, the pole coil 7 bounded.
  • the secondary part has an approximately pot-shaped, soft-magnetic housing part 8, which has an annular row of axially alternating permanent magnet poles 9 alternately in directions opposite to each other on its bottom area facing the soft-magnetic core.
  • the permanent magnet poles 9 are arranged at constant distances from the axis of rotation 3 and cooperate with the pole coils 7 and the soft-magnetic core of the primary part to produce a rotational movement via an air gap 10, which is penetrated axially by the magnetic flux.
  • the primary part has two soft-magnetic cores, which are arranged axially on both sides of a disc-shaped secondary part (intermediate rotor) parallel thereto.
  • an air-coil chain 11 is prefabricated for the primary part first for each winding phase, which has provided for the respective winding phase pole coils 7 and connecting conductors 12, via which the pole coils 7 are connected in series.
  • the pole coils 7 and the connection conductors 12 of each winding phase are integrally connected to each other.
  • a winding body (not shown in detail in the drawing) is provided for each winding phase, which has a number of the pole coils of the winding phase corresponding number laterally spaced from each other winding teeth.
  • the cross-sectional dimensions of the winding teeth coincide with the cross-sectional dimensions of the corresponding teeth 5 of the soft-magnetic primary part core or are larger around the mounting gap.
  • the winding teeth are wound with coil wire orthocyclically.
  • the pole coils 7 preferably have a straight layer number and start and end at the groove bottom of the winding grooves 14.
  • the crossover region of the layers lies in the outer winding head of the pole coils 7.
  • the track number of successive layers differs by one and the tracks in successive layers are one half the wire thickness offset each other.
  • the winding sense of successive coils changes, so that they are flowed through when energizing the coil chain 11 in opposite directions from the magnetic flux and thus produce 5 unlike magnetic poles on the teeth.
  • the coil wire round wire As a coil wire round wire is used, which is painted with a lacquer layer and an additional baked enamel layer thereon. After winding, the coil wire still on the winding teeth is heated by energizing with a heating current to make the baked enamel flowable. In this case, the baked enamel fills between the turns of the pole coils 7 located cavities, which leads to a high strength and dimensional stability of the pole coils 7 after cooling and solidification of the enamel. While the coil wire is heated, the pole coils 7 are pressed and deformed in the direction of the groove width, that is, in the case of a pancake in the circumferential direction, with the aid of a pressing tool. As a result, very high fill factors and exact outer dimensions of the pole coils 7 can be achieved.
  • the cross-sectional dimensions of the pole coils 7 are also reduced in the direction of the groove depth, ie in the case of a pancake in the axial direction.
  • the pole coils 7 are pressed in the groove direction, ie in a pancake in the radial direction against a stop. This gives the coil chain 11 winding heads with defined outer dimensions and allows installation with little radial mounting gap in the housing part eighth
  • the connecting conductors 12 are bent on the winding body in a predetermined position.
  • the position is chosen so that the connecting conductors 12 are arranged after positioning the coil chains 11 on the soft magnetic core laterally adjacent to the Wickeköpfen the pole coils 7 and before the teeth 5 interconnecting yoke 4 of the soft magnetic core ,
  • the air-coil chain 11 thus obtained is shaped by the wound body by means of an impression device 13.
  • the impression device 13 has two approximately plate-shaped clamping members 14 which are clamped together by means of a clamping device 15.
  • two insert rings 16 are arranged, which engage in the position of use of the winding body or the coil chain 11 to separate these parts from each other.
  • two pairs of insert rings 16 are provided, which can be selected or alternately arranged between the clamping parts 14.
  • an approximately annular mounting body 17 (FIGS. 6 to 8) which has mounting teeth 18 corresponding to the teeth 5 of the soft magnetic core.
  • the mounting body 17 is preferably made of a material having a higher strength than the material of the soft magnetic core.
  • Fig. 8 it can be seen that the yoke portion of the mounting body 17 also has a greater wall thickness than the yoke 4 of the soft magnetic core.
  • the coil chains in one of their later mounting position on the soft magnetic core 5 corresponding position are mounted (Fig. 7 and 8).
  • the mounting body 17 is positioned together with the coil chains arranged thereon on the soft magnetic core, that the mounting teeth 18 each directly opposite to their associated teeth 5 of the soft magnetic core (Fig. 9). Then, the coil chains 11 are displaced from the mounting body 17 in the direction of the soft magnetic core, that the pole coils 7 each define their associated tooth 5 of the soft magnetic core. In this case, the connecting conductors 12 are located radially outside the yoke 4 axially adjacent to the winding heads of the pole coils 7. Thereafter, the mounting body 17 is removed from the soft magnetic core and the coil chains 11.
  • a plug member 19 is positioned, which has a plurality of electrical connection contacts 20 which are encapsulated with an electrically insulating carrier material and with their ends from the Protruding support material. With the connection contacts 20, the wire ends of the coil chains 11 are electrically connected, for example by soldering or welding
  • the primary part thus obtained is inserted into the housing part 8 and a mounting gap located between the primary part and the housing part 8 is filled with a potting compound which solidifies.

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

Abstract

L'invention concerne un procédé de fabrication d'un moteur électrique comportant une partie primaire et une partie secondaire logée de façon à se déplacer dans une direction de déplacement par rapport à la partie primaire. Selon l'invention, un noyau magnétique doux comportant des dents décalées les unes par rapport aux autres, séparées par des rainures, est réalisé pour la partie primaire. Le noyau magnétique doux est pourvu d'un enroulement polyphasé présentant au moins deux bobines polaires pour chaque phase d'enroulement, entourant respectivement une dent du noyau magnétique doux qui leur est affectée. Une chaîne de bobines à air est respectivement préfabriquée pour chaque phase d'enroulement, chaque chaîne comportant les bobines polaires prévues pour la phase d'enroulement correspondante, présentant une cavité intérieure, et les conducteurs de connexion connectant les bobines polaires en série. Les chaînes de bobines à air préfabriquées sont respectivement positionnées sur le noyau magnétique doux et les bobines polaires sont respectivement enfichées avec leur ouverture de bobine sur la dent du noyau magnétique doux qui leur est affectée. Les chaînes de bobines sont fixées sur le noyau magnétique doux.
PCT/DE2007/002117 2006-12-14 2007-11-22 Moteur électrique et procédé de fabrication WO2008071147A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007003031T DE112007003031A5 (de) 2006-12-14 2007-11-22 Elektrische Maschine und Verfahren zum Herstellen einer solchen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006058972 2006-12-14
DE102006058972.6 2006-12-14

Publications (2)

Publication Number Publication Date
WO2008071147A2 true WO2008071147A2 (fr) 2008-06-19
WO2008071147A3 WO2008071147A3 (fr) 2008-09-12

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PCT/DE2007/002117 WO2008071147A2 (fr) 2006-12-14 2007-11-22 Moteur électrique et procédé de fabrication

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DE (1) DE112007003031A5 (fr)
WO (1) WO2008071147A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213506A1 (de) 2014-07-11 2016-01-14 Robert Bosch Gmbh Wicklungselement für eine Axialflussmaschine, Statoreinheit für eine Axialflussmaschine sowie Verfahren zur Herstellung einer Statoreinheit für eine Axialflussmaschine
EP2502332B1 (fr) 2009-11-16 2016-04-06 Schaeffler Technologies AG & Co. KG Unité modulaire statorique, notamment pour machines électriques polyphasées, et procédé de production d'une unité modulaire statorique de ce type
WO2018095618A1 (fr) * 2016-11-23 2018-05-31 Kessler energy GmbH Composant moteur, élément primaire et moteur linéaire
DE102020216117A1 (de) 2020-12-17 2022-06-23 Zf Friedrichshafen Ag Scheibenläufermotor, insbesondere ein Scheibenläufermotor für ein Kraftfahrzeug
WO2023247611A1 (fr) * 2022-06-22 2023-12-28 Vitesco Technologies GmbH Stator pour machine à flux axial, machine à flux axial et véhicule automobile équipé d'une machine à flux axial

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603429A1 (fr) * 1986-08-28 1988-03-04 Mitsuba Electric Mfg Co Enroulement de stator d'alternateur pour vehicules et procede de bobinage
EP0455121A2 (fr) * 1990-04-26 1991-11-06 Mitsubishi Denki Kabushiki Kaisha Procédé de fabrication d'un stator
US20020171305A1 (en) * 2001-04-17 2002-11-21 Moteurs Leroy-Somer Electric machine having an outer rotor
EP1294076A2 (fr) * 2001-09-17 2003-03-19 Mitsubishi Denki Kabushiki Kaisha Stator d'alternateur et son procédé de fabrication
EP1372242A2 (fr) * 2002-05-14 2003-12-17 AXIS S.p.A. Méthode et appareil pour le bobinage de composants de machines dynamo-électriques
WO2004047253A1 (fr) * 2002-11-15 2004-06-03 In Motion Technologies Pty Ltd Dispositif electromagnetique pluriphase a disposition amelioree des enroulements conducteurs
US20050133655A1 (en) * 2002-08-08 2005-06-23 Shingo Hashimoto Coil forming method and coil forming device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603429A1 (fr) * 1986-08-28 1988-03-04 Mitsuba Electric Mfg Co Enroulement de stator d'alternateur pour vehicules et procede de bobinage
EP0455121A2 (fr) * 1990-04-26 1991-11-06 Mitsubishi Denki Kabushiki Kaisha Procédé de fabrication d'un stator
US20020171305A1 (en) * 2001-04-17 2002-11-21 Moteurs Leroy-Somer Electric machine having an outer rotor
EP1294076A2 (fr) * 2001-09-17 2003-03-19 Mitsubishi Denki Kabushiki Kaisha Stator d'alternateur et son procédé de fabrication
EP1372242A2 (fr) * 2002-05-14 2003-12-17 AXIS S.p.A. Méthode et appareil pour le bobinage de composants de machines dynamo-électriques
US20050133655A1 (en) * 2002-08-08 2005-06-23 Shingo Hashimoto Coil forming method and coil forming device
WO2004047253A1 (fr) * 2002-11-15 2004-06-03 In Motion Technologies Pty Ltd Dispositif electromagnetique pluriphase a disposition amelioree des enroulements conducteurs

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2502332B1 (fr) 2009-11-16 2016-04-06 Schaeffler Technologies AG & Co. KG Unité modulaire statorique, notamment pour machines électriques polyphasées, et procédé de production d'une unité modulaire statorique de ce type
DE102014213506A1 (de) 2014-07-11 2016-01-14 Robert Bosch Gmbh Wicklungselement für eine Axialflussmaschine, Statoreinheit für eine Axialflussmaschine sowie Verfahren zur Herstellung einer Statoreinheit für eine Axialflussmaschine
WO2018095618A1 (fr) * 2016-11-23 2018-05-31 Kessler energy GmbH Composant moteur, élément primaire et moteur linéaire
CN110024274A (zh) * 2016-11-23 2019-07-16 凯斯勒能源公司 电机部件、初级组件和线性电机
US11139721B2 (en) 2016-11-23 2021-10-05 Kessler energy GmbH Motor component, primary part and linear motor
DE102020216117A1 (de) 2020-12-17 2022-06-23 Zf Friedrichshafen Ag Scheibenläufermotor, insbesondere ein Scheibenläufermotor für ein Kraftfahrzeug
WO2023247611A1 (fr) * 2022-06-22 2023-12-28 Vitesco Technologies GmbH Stator pour machine à flux axial, machine à flux axial et véhicule automobile équipé d'une machine à flux axial

Also Published As

Publication number Publication date
DE112007003031A5 (de) 2009-09-10
WO2008071147A3 (fr) 2008-09-12

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