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WO2013098111A2 - Procédé de production d'un élément destiné à une machine électrique, et machine électrique correspondante - Google Patents

Procédé de production d'un élément destiné à une machine électrique, et machine électrique correspondante Download PDF

Info

Publication number
WO2013098111A2
WO2013098111A2 PCT/EP2012/075821 EP2012075821W WO2013098111A2 WO 2013098111 A2 WO2013098111 A2 WO 2013098111A2 EP 2012075821 W EP2012075821 W EP 2012075821W WO 2013098111 A2 WO2013098111 A2 WO 2013098111A2
Authority
WO
WIPO (PCT)
Prior art keywords
segments
stator
toothed
connecting wire
individual coils
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.)
Ceased
Application number
PCT/EP2012/075821
Other languages
German (de)
English (en)
Other versions
WO2013098111A3 (fr
Inventor
Bjoern Nommensen
Csaba Hegedues
Zoltan Lambert
Balazs Magyar
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.)
Robert Bosch 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
Priority to CN201280064562.1A priority Critical patent/CN104254966B/zh
Publication of WO2013098111A2 publication Critical patent/WO2013098111A2/fr
Anticipated expiration legal-status Critical
Publication of WO2013098111A3 publication Critical patent/WO2013098111A3/fr
Ceased 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
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient 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
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
    • 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 wound machine components for electrical machines, in particular stators or rotors, as well as methods for the production of machine components for electrical machines.
  • the toothed segments each have a base part from which protrude one or more toothed elements.
  • the toothed segments are suitably wound prior to assembly and then joined so that the base portions are annularly disposed together to form a ring, the toothed elements being rectified inwardly or outwardly.
  • a method for producing a machine component for an electrical machine comprising:
  • the above manufacturing method has the advantage that a machine component can be produced in which the connecting wire of the winding wire, which continuously wound several individual coils, are reliably insulated against coil sides of further wound tooth segments and / or against a connecting wire between individual coils of further coil groups can. As a result, short circuits can be avoided in case of damage of the insulating varnish of the winding wire.
  • the toothed segments can be arranged in a plane prior to assembly, so that toothed parts of the toothed segments project in the same direction and, after winding the toothed segments, the connecting wire between the individual coils of the coil group is laterally offset from the toothed segments in the plane the tooth segments are tilted during assembly over the coil sides of the several other tooth segments in the direction of the connecting wire.
  • the toothed segments are arranged in an annular manner in the plane prior to assembly, wherein the winding is carried out so that the connecting wire is in the arrangement of the toothed segments radially within the annular arrangement of the toothed segments.
  • the insulating element may comprise an insulating ring which is applied to the connecting wire parallel to the arrangement in the plane.
  • a further insulating element may be arranged between the connecting wire between the individual coils of a first coil group and the connecting wire between the individual coils of a second coil group.
  • a further isolation element can be arranged before the assembly takes place to form the machine component.
  • a machine component in particular a stator, is provided.
  • the machine component includes:
  • the base parts of the toothed segments can be arranged in a ring, so that the toothed portions protrude radially rectified from the arranged base parts
  • a plurality of first and a plurality of second coil groups may be provided, wherein a second insulating element between the connecting wire between the individual coils of the first coil group and the
  • Connecting wire between the individual coils of the first coil group is arranged.
  • the toothed segments can each comprise a toothed part and a base part, the base part having a recess at one end and a base part
  • Projection is provided at an opposite end, so that when assembling the toothed segments for forming the machine component in each case a projection of a base part engages in a recess of an adjacent base part.
  • an electric machine is provided with the above machine components.
  • Figure 1 is a perspective view of a stator, which has been prepared according to the inventive method
  • Figure 2 is an illustration of an arrangement of stator segments in front of the
  • Figure 3 shows three stator segments which have been wound with a continuous winding wire
  • FIGS. 4a-d show an exemplary embodiment of a production method in which a plurality of groups of wound stator segments and of insulating rings are arranged to form a stator;
  • Figure 5 is a view of a process step in which the stator segments are assembled into a stator ring;
  • Figures 6a-b detailed views of the connection of the stator segments of Figure 5;
  • FIGS. 7a-b show a winding device for winding the stator segments
  • FIG. 8 shows a stator segment with a tool for holding, lifting and
  • an annular stator 10 is shown as an example of a machine component.
  • the stator 10 is arranged in a housing part.
  • the stator has an internal recess in which a permanent magnet rotor (not shown) can be rotatably arranged.
  • the stator 10 is composed of individual stator segments 12 (toothed segments), which are arranged in a ring shape.
  • Each stator segment 12 may, for example, have a T-shaped cross-section and comprise a magnetic base part 34 and a magnetic tooth part 32 which extends substantially perpendicularly from the base part 34.
  • the stator segment 12 may also be L-shaped.
  • the base part 34 and the tooth part 32 are preferably formed in one piece.
  • the base parts 34 of the individual stator segments 12 are arranged annularly against one another and thus form a stator ring, from which the tooth parts 32 extend inwards in the direction of the inner recess (for a rotor).
  • the tooth parts 32 are each wound with a winding wire, wherein in each case an insulating mask 28 is arranged between the stator segments 12 and the winding wire wound thereon, which insulates the stator segment 12 from the spooling wire.
  • the insulating masks 28 are for example made of plastic and each project beyond the magnetic core of the stator segment 12 in the axial direction A.
  • Each insulating mask 28 has at its upper edge two circumferentially offset slots 30 and openings, which serve as positioning and implementation for the winding wire.
  • one of six coil groups of three stator segments 12 (with three toothed parts 32) is wound with one continuous (continuous) winding wire.
  • the stator segments 12 are arranged in a circle, wherein the tooth parts 32 extend approximately perpendicular to the annular surface of the stator segments.
  • a first and second of the stator segments 12 of a coil group are arranged directly adjacent to each other in the circumferential direction and a third stator segment 12 of the relevant coil group offset in the circumferential direction of the first and second stator segment 12, z. B. to about 120 °, so that you get three differently spaced stator segments 12 for each coil group with respective individual coils.
  • the long connecting wires 16, 18 each extend over a part of their length radially within the base parts 34 of the stator segments 12, so that they are arranged adjacent to the coil sides of the wound stator segments 12.
  • annular insulation elements 22, 24 are respectively inserted between the winding side of the individual coils pointing in the axial direction A and the long connecting wires 16, 18.
  • stator segments In the illustrated embodiment with 18 stator segments, six such groups of coils are needed which are staggered to form the stator 10. This results in a total of twelve (2 x 6) leads 20 for electrical contacting of the respective coil groups, the ends of which are guided through the slots 30 and projecting in the axial direction A from the respective upper ends of the windings.
  • the arrangement of the six coil groups leads to six long connecting wires 16, 18, which are arranged offset from each other in the circumferential direction.
  • the long connecting wires 16, 18 of the coil groups in two planes with respect to the axial direction A and in the axial direction to the individual coils be disposed adjacent to each other, which are electrically isolated from each other by the annular insulating elements 22, 24.
  • FIG. 2 shows the arrangement of the stator segments 12 before winding.
  • the stator segments 12 are arranged in a circle about a central axis M and aligned in the radial direction and thus are initially in a plane next to each other to allow access to each individual tooth portion 32 of the stator 12 from one side.
  • each stator segment 12 is held on a holding tool 100.
  • the holding tool 100 is in turn held and moved by an assembly tool (not shown).
  • stator segment 12 which is to be wound, by means of its holding tool 100 in the axial direction A, d. H. in the direction of the central axis M, lifted out of the plane of the remaining stator segments 12 and wound by means of known methods via a winding device with a winding wire (not shown).
  • a needle winding is used in which the head of the waking apparatus is guided around the segment axis S of the selected stator segment 12.
  • stator segments of each coil group are wound in succession. After the first stator segment 12 has been wound, it is moved back to its starting position in the plane of the remaining stator segments 12, and the spooling wire can be bent for the continuous (continuous) winding of the next, second stator segment 12.
  • stator segments 12 are rotated on their holding tools 100 about the central axis M, so that the second stator segment 12 to be wound and then the third stator segment 12 to be wound are rotated to the jig.
  • first and second stator segments 12 of the relevant coil group are interconnected by a short connecting wire 14, which is guided by the facing slots 30 of the two insulating masks 28 of the first and second stator 12.
  • a long connecting wire 16 connects the second stator segment 12 to the third stator segment 12 of the relevant coil group, which in the present exemplary embodiment is arranged offset by approximately 120 ° in the circumferential direction.
  • the long connecting wire 16 is slightly curved in a V-shape, preferably radially inside the inner end of the windings, so that for the subsequent mounting of the stator game for a change of the long connecting wire to be bridged distance between the second stator 12 and the third stator 12th remains.
  • FIGS. 4a-d show how a plurality of coil groups of such stator segments 12 wound with a continuous winding wire are assembled into a ring of 18 stator segments.
  • first three coil groups each with three continuously wound stator segments 12, are arranged in a mounting device.
  • the arrangement or alignment of the individual stator segments 12 substantially corresponds to that shown in FIG.
  • the long connecting wires 18 are arranged so that they do not overlap each other, but lie in each non-overlapping circle segments.
  • the long connecting wires 18 are arranged with respect to the area enclosed by the arranged stator segments 12 surface within the radially inner edge of the stator segments 12.
  • FIG. 4b shows a first annular insulating element 24 which is placed on the long connecting wires 18 of the first coil groups.
  • the first insulation element 24 has an outer diameter which is equal to or smaller than the area enclosed by the arranged stator segments 12. Furthermore, the inner diameter of the insulating element 24 is selected such that the insulating element 24 covers the long connecting wires 18 but is not larger than the width of the stator segment 12 above the end of the toothed part 32 opposite the base part 34 and opposite the toothed part 32. ing end of the base member 34, so that in the stator to be manufactured, the insulation element 24 does not protrude into the interior of the area enclosed by the stator.
  • the outer edge of the first insulation element 24 may have indentations 26 which are arranged at the points at which the long connecting wires 16 of the coil groups to be subsequently arranged emerge from the insulation masks 28 of the individual coils.
  • a second annular insulation element 22 is mounted, which in the assembled stator 10 electrically insulates the long connecting wires 16 against the coil sides of the individual coils of the wound stator segments 12 (see FIG. 1).
  • the insulation elements 22, 24 are in this case preferably made of plastic.
  • the wound stator segments 12 arranged as shown in FIG. 4 d are rotated 90 degrees relative to the orientation shown in FIGS. 2 to 4 a by their holding tools 100
  • the tilting takes place in the direction of the long connecting wires 16 facing coil sides of the individual coils.
  • the stator ring is formed by the circumferentially adjacent base parts 34 of the individual stator segments 12, of which the tooth parts 32 of the individual stator segments 12 protrude radially inwards.
  • the base parts 34 are each provided at their edges with a projection 36 and a recess 38 which engage in the end position of the stator segments 12 (see FIG. 7b) and can be connected there by welding or gluing ,
  • the projections 36 and recesses 38 ensure reliable alignment and placement of the individual stator segments 12 to facilitate assembly of a cylindrical stator.
  • a complete stator 10 is made in which the number of cantilevered leads 20 (see Figure 1) is minimized. Furthermore, the connecting wires 14, 16, 18 are effectively insulated between the individual coils of the coil group with a winding wire against the coil sides of the individual coils and against the connecting wires. Due to the fact that the insulation elements 22, 24 are already inserted into the partially mounted stator ring during the winding of the stator segments 12, no additional assembly tool is required, but the insulation can take place in the same installation tool and at the same production station as the winding of the stator segments 12.
  • FIGS. 7a and 7b show various views of an embodiment of a winding device 200 with which three stator segments 12 can be wound simultaneously.
  • Three heads 202 which are each rotatable about an axis S and have at one end a guide for a Waklungsdraht are circumferentially offset by substantially 120 ° to each other. At one end, the heads 202 each have a guide for a Wcklungsdraht D, with which they can wind in a Nadelwicklungsvon each located under the head 202 stator segment 12.
  • Three stator segments 12 can be wound simultaneously with the winding device 200 shown in FIGS. 7a and 7b, so that the coil group shown in FIG. 4a can be produced on three stator segments 12 with individual coils wound continuously in a single process step.
  • stator segments 12 which are being wound are each lifted with their associated holding tool 100. After winding a stator segment 12, this is lowered again and the ring of stator segments 12 is rotated under the Wckelvorraum 200 until under each head 202, the next to be wound stator 12 is located.
  • Wckelvorraum 200 for moving the individual stator segments 12 under the winding device and for the subsequent folding of the stator segments 12 to the stator ring while holding tools 100 are provided, as shown in Figures 8 and 9.
  • the holding tool 100 is designed to engage by means of projections or rails 102 in correspondingly formed grooves 40 on one side of the stator segment 12.
  • the holding tool 100 comprises an arm 104, which forms the largest possible and easy to be positioned engaging portion for a mounting device (not shown).
  • the arm 104 two openings 106 are provided, in which engage corresponding portions of the mounting device and thus the holding tool 100 can easily grab and move.
  • the holding tool 100 also comprises a positioning portion 108 in the form of a cuboid, which allows an exact positioning of the holding tool 100 in the assembly tool by its edges and stop surfaces.
  • the holding tool 100 makes it possible to securely hold and precisely position a stator segment 12 that is difficult to fix against the forces occurring in the needle winding.
  • the holding tool 100 can be positioned during assembly of the stator 10 with high accuracy. Therefore, in particular, the assembling of the stator segments 12 to a stator ring can be performed with high accuracy.
  • stator segments 12 can be varied according to the application.
  • the interconnection of the individual winding strands can be performed in parallel or in series to form the corresponding electrical phases - in particular a brushless DC motor (EC motor).
  • EC motor brushless DC motor
  • the above-described manufacturing method for a stator 10 is basically applicable also to a rotor formed as an external rotor.
  • the electric machine according to the invention for adjusting moving parts in the motor vehicle - for example, as a power steering motor - used, but is not limited to such an application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne un procédé pour fabriquer un élément (10) destiné à une machine électrique, en particulier un stator, consistant à bobiner chaque segment formant dent (12) d'une pluralité de segments formant dents (12) à l'aide d'une bobine individuelle, plusieurs bobines individuelles d'un groupe de bobines étant réalisées à l'aide d'un fil d'enroulement ininterrompu, un segment du fil d'enroulement s'étendant en tant que fil de liaison (16, 18) entre les bobines individuelles; à monter un élément d'isolation (22) sur le fil de liaison (16, 18); et à assembler les segments formant dents (12) bobinés individuels du groupe de bobines et un ou plusieurs autres segments formant dents (12) bobinés pour former l'élément de machine (10), cet assemblage étant réalisé de sorte que l'élément d'isolation (22) se trouve entre le fil de liaison (16, 18) et les côtés de bobine des autres segments formant dents (12).
PCT/EP2012/075821 2011-12-27 2012-12-17 Procédé de production d'un élément destiné à une machine électrique, et machine électrique correspondante Ceased WO2013098111A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280064562.1A CN104254966B (zh) 2011-12-27 2012-12-17 用于制造电机的机器部件的方法以及一种机器部件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011089902A DE102011089902A1 (de) 2011-12-27 2011-12-27 Verfahren zum Herstellen einer Maschinenkomponente für eine elektrische Maschine sowie eine Maschinenkomponente
DE102011089902.2 2011-12-27

Publications (2)

Publication Number Publication Date
WO2013098111A2 true WO2013098111A2 (fr) 2013-07-04
WO2013098111A3 WO2013098111A3 (fr) 2014-07-17

Family

ID=47358479

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/075821 Ceased WO2013098111A2 (fr) 2011-12-27 2012-12-17 Procédé de production d'un élément destiné à une machine électrique, et machine électrique correspondante

Country Status (3)

Country Link
CN (1) CN104254966B (fr)
DE (1) DE102011089902A1 (fr)
WO (1) WO2013098111A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3340440A1 (fr) * 2016-12-23 2018-06-27 Bühler Motor GmbH Moteur sans balais

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009060838A1 (de) 2009-12-29 2011-07-14 Robert Bosch GmbH, 70469 Stator einer elektrischen Maschine sowie Verfahren zum Herstellen eines solchen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7132775B2 (en) * 2002-12-26 2006-11-07 Mitsubishi Denki Kabushiki Kaisha Stator of dynamoelectric machine and method for manufacturing stator winding
ATE324698T1 (de) * 2003-07-12 2006-05-15 Grundfos As Segmentierter stator
WO2011057599A2 (fr) * 2009-11-16 2011-05-19 Schaeffler Technologies Gmbh & Co. Kg Unité modulaire statorique, notamment pour machines électriques polyphasées, et procédé de production d'une unité modulaire statorique de ce type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009060838A1 (de) 2009-12-29 2011-07-14 Robert Bosch GmbH, 70469 Stator einer elektrischen Maschine sowie Verfahren zum Herstellen eines solchen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3340440A1 (fr) * 2016-12-23 2018-06-27 Bühler Motor GmbH Moteur sans balais

Also Published As

Publication number Publication date
CN104254966B (zh) 2017-09-19
CN104254966A (zh) 2014-12-31
DE102011089902A1 (de) 2013-06-27
WO2013098111A3 (fr) 2014-07-17

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