WO2006069841A1 - Machine electrique, en particulier moteur ec, et procede de realisation - Google Patents

Machine electrique, en particulier moteur ec, et procede de realisation Download PDF

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Publication number
WO2006069841A1
WO2006069841A1 PCT/EP2005/055695 EP2005055695W WO2006069841A1 WO 2006069841 A1 WO2006069841 A1 WO 2006069841A1 EP 2005055695 W EP2005055695 W EP 2005055695W WO 2006069841 A1 WO2006069841 A1 WO 2006069841A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
contact
stator
einzelzahnspulen
electrical machine
Prior art date
Application number
PCT/EP2005/055695
Other languages
German (de)
English (en)
Inventor
Gerald Zierer
Michael Albrecht
Andreas Wehrle
Michael Huber
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 WO2006069841A1 publication Critical patent/WO2006069841A1/fr

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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
    • 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

  • Electric machine in particular EC motor and method of its manufacture
  • the invention relates to an electrical machine, in particular to an electrically commutated motor according to the preamble of claim 1 and to a method for
  • Machines are the individual pole teeth of the stator usually wound with Einzelffyspulen, each belonging to a winding strand.
  • Each phase of the stator winding has at least one phase winding of several Einzel leopardspulen.
  • the present solution is aimed at a
  • the machine according to the invention with the characterizing features of claim 1 has the advantage that when winding the Statorpolzähne the single-tooth coils are due to their parallel connection with a relatively small cross-section and correspondingly larger number of turns easily produce in a confined space.
  • the beginnings and the ends of these single-tooth coils are each guided for parallel connection via common, several single-tooth coils associated contact parts, now the single-tooth coils can be continuously wound by winding machines. This is significantly cheaper to manufacture than a parallel connection of individually wound coils, since their coil wire ends would otherwise have to be contacted individually with a so-called interconnection element.
  • This solution is also winding technically cheaper, since it allows the use of thinner winding wires, which is a considerable simplification especially for small machines with tight stator slots for winding the stator teeth.
  • this solution gives more degrees of freedom for the Characteristic of the winding layers as with a few, thick wires.
  • the groove slot can be narrower, which may increase the magnetic flux in the stator and thus the engine torque and so-called cogging torques can be reduced.
  • stator per phase is wound with only one phase winding of several Einzelffyspulen, it is advantageous for the production of the stator winding, if at least two, preferably all
  • Winding strands are wound continuously. However, if necessary, after contacting the individual toothed coils with the contact points, in order to avoid short circuits between the individual phases of the stator winding, it is necessary to separate a wound connection between two contact parts. Conveniently, all contact parts are arranged for parallel connection of the wound through Einzelffyspulen on a front side of the stator and each provided with a contact hook, is hooked on each in a reliable manner by means of winding machines lying between two Einzelffyspulen section of the winding wire. After winding, the winding wires suspended on the contact hooks are electrically and mechanically connected to the respective contact part.
  • the beginnings and the ends of the winding strands are each hooked on the contact hook of a trained as a phase connection or neutral contact part and electrically contacted, preferably welded.
  • the star point interconnection of the three If it is not necessary to hook all the ends of the individual toothed coils on a contact hook, it is proposed that the star point be formed from at least two contact parts which are spaced apart from each other and which are electrically connected to one another as required for equipotential bonding via a conductor.
  • a Isolierstoffring is attached with axially projecting outer collar, the
  • Contact parts carries, which are preferably made of an axially aligned sheet metal strip with free-punched, axially outwardly open contact hook.
  • the outer collar is expediently provided with radial recesses for the supply and discharge of the winding wire of the radially inner single tooth coils.
  • the interconnection of the individual tooth coils is thus completely on the one end side of the stator.
  • the Isolierstoffring is provided on its outer side, preferably in the region of the outer collar with a plurality of mutually parallel circumferential grooves in which more or less many winding wire sections are added in sections.
  • 1 shows an EC motor in a simplified representation in longitudinal section
  • 2 shows a stator of the EC motor with frontal Isolierstoffring and contact parts, before winding, in three-dimensional view
  • FIG. 3 shows a contact part in an enlarged spatial representation
  • FIG. 4 shows an outbreak of the insulating ring in an enlarged spatial representation
  • Figure 5 shows the interconnection of the three winding strands with their three each wound through Einzelffyspulen to the contact parts as a first embodiment.
  • Figure 6 shows a second embodiment, the interconnection of the single-tooth windings and the three wound winding strands with the contact parts
  • Figure 7 shows an enlarged view of a cross section through the stator of the EC motor with schematically outwardly directed contact parts and their interconnection with the Einzelffyspulen of Figure 6 and
  • FIG. 8 shows the stator teeth with the single-tooth coils, the contact parts and their interconnection as development of the stator from FIG. 7.
  • an EC motor is shown in longitudinal section and designated 10 as the electric machine according to the invention. It has a stator 11 with a stator 12 and a housing 13. Within the stator 12, a rotor 14 is mounted on a rotatably mounted motor shaft 15. The rotor 14 is provided with evenly distributed on the circumference arranged permanent magnet 16, which cooperate with the stator 12 of the stator 11.
  • the stator 12 consists of a plurality of poles, each forming a radially inwardly directed pole tooth 17. Each pole tooth 17 carries a single tooth coil 18 which is one of three winding strands of one described below belongs to three-phase stator winding. In the example, it is a nine-pole stator 11, which interacts with a twelve-pole rotor.
  • Figure 2 shows the separately producible stator 12 in a three-dimensional view with its nine poles 12a before the winding of its pole teeth 17.
  • a Isolierstoffring 19 is attached, which is provided with an axially projecting outer collar 20.
  • the outer collar 20 are a total of five
  • Figure 3 shows an enlarged spatial representation of such a contact part 21.
  • the outer portion of the sheet metal strip is formed as a connector tongue 21a, which can be used as a phase connection.
  • a contact hook 22 is also punched free and bent radially inward so far back that the hook opening 22a is directed axially outward.
  • Figure 4 shows an enlarged view of an outbreak of the insulating ring 19 of Figure 2 to make it clear that in the region of the outer collar 20 of the insulating ring 19 has on its outer side a plurality of mutually parallel, circumferential grooves 24. These grooves 24 serve to receive and guide the winding wire sections between the single-tooth coils, which - as explained below - each guided by one of the individual teeth coils 18 to one of the contact parts 21, hooked there on the contact hooks 22 and optionally continued from there to another single-tooth coil 18 have to.
  • the outer collar 20 of the insulating ring 19 also has radial recesses 23rd for the supply and discharge of winding wires of the radially inner single-tooth coils 18.
  • FIG. 5 shows, for the nine-pole EC motor 10, a three-phase stator winding 25 with three winding phases 26, 27, 28, which each have three single-tooth coils 18.
  • the three single-tooth coils 18 of each winding strand 26, 27, 28 are wound through and interconnected in parallel via two contact parts 21.
  • the three star point parts Stpl, Stp2, and Stp3 must now be connected to one another.
  • the triple cross-section of the winding wire 29 is required because it has to conduct the current of the three parallel-connected coils of a winding strand.
  • This connection is made in the simplest way by a correspondingly thick connecting wire 30 which is hooked to the contact hooks 22 of the three star point parts.
  • this connection can also be made via a bus bar in the insulating ring 19 or by repeated reciprocating the winding wire 29 between the three star point parts.
  • Winding wires are contacted with each other and with the respective contact part 21 electrically and mechanically. After this contacting, the three wound coils 18 of each winding strand 26, 27, 28 are now connected in parallel to each other.
  • FIGS. 6 to 8 show a second exemplary embodiment of the invention with a parallel connection of the three single-tooth coils 18 of each winding strand 26, 27 and 28, this time not only through the three coils of a winding strand.
  • the three winding strands and thus all single-tooth coils 18 are wound through and then the coils of each winding strand are connected in parallel to each other and the three winding strands connected in a star.
  • the designations of the single-tooth coils 18, the pole teeth 17 and the contact parts 21 are the same as in the example according to FIG. 5.
  • the third neutral point part Stp3 can be dispensed with here.
  • FIG. 7 For a better understanding of the sequence of steps in the continuous winding of the nine single-tooth coils, reference is made to FIG. However, the winding sequence can also be reproduced in the sectional view of the stator 11 according to FIG. 7 as well as in the development of the stator 11 in FIG.
  • the winding wire 29 is first hung with its beginning 29a on the contact hook 22 of the phase connection part U and guided from there to the pole tooth Zl. Now the coil Sl is wound and then the winding wire 29 is hooked on the contact hook 22 of the star point part Stp2 and guided from there to the pole tooth Z4. Now the coil S4 is wound and then the winding wire in turn hooked to the phase terminal U. From there it goes to Poliere Z7.
  • the coil S7 is wound there and then you hang the winding wire on the contact hook 22 of the star point part Stpl. Then it goes to the pole tooth Z8, where the coil S8 is wound. Thereafter, the winding wire is hooked to the phase terminal part V and then continued to the pole tooth Z2. There, the coil S2 is wound and then the winding wire is hung again at the star point part Stp2. From there it goes to the pole tooth Z5 and it is wound the coil S5. Then, the winding wire is hooked again to the phase connection part V and looped from there to the phase connection part W. This connection 31 is shown in dashed lines, since it must be removed later. From the phase connection part W, the winding wire 29 is now guided to the pole tooth Z6 and there the coil S6 is wound.
  • the winding wire is hooked again to the star point part Stp2 and then guided to the pole tooth Z3.
  • the coil S3 is wound and then the winding wire is also hung again on the phase connection part W. Now it goes to the pole tooth Z9 to wind the last coil S9.
  • the winding wire 29 is hooked to the star point part Stpl and finally he is with his end 29b until the
  • connection hooks 22 of the contact parts 21 are compressed as in the example of Figure 5 and the winding wires suspended there are contacted with the contact parts 21, suitably welded.
  • the two star point parts Stpl and Stp2 are connected to one another and, furthermore, the three individual toothed coils 18 of each of the three winding phases 26, 27 and 28 are connected in parallel with one another.
  • the connection 31 between the two phase terminals V and W is separated out.
  • phase connection parts U, V and W as well as the star point parts Stpl and Stp2 have been laid radially outside the stator 11 shown in cross-section for better recognition of the winding pattern. There is also recognizable that the beginnings and ends of the single-tooth coils
  • Ends of the coils are each routed through one of the recesses 23 from the inside to the outside and then laid in one of the grooves 24 on the outer collar 20. Furthermore, it can be seen that the connection 31 between the phase connection parts V and W in the region of the recesses 23 of the outer collar 20 can be cut out relatively easily.
  • FIG. 8 once again shows the development of the stator 11 with the winding pattern for the nine single-tooth coils 18, wherein the Winding direction of the winding wire 29 is made visible in each case by arrows.
  • Winding wire 29 with the contact parts 21 is shown in each case as a continuous connection of the wire to the respective contact part. Consequently, in the case of the connections shown in the region of the contact parts, there is no contact with them.
  • connection 31 in FIG. 6 is intentionally dispensed with, since it must be removed again during winding through all three winding strands, in order to prevent a short circuit between the phases V and W.
  • the winding according to the invention of the single-tooth coils of winding strands of the stator winding can be realized not only according to the described embodiments of nine-pole EC motors, but also perform on six-pole, twelve-pole or EC motors with even higher number of poles.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention concerne une machine électrique, en particulier un moteur EC (10) comprenant un stator (11) dont le paquet de stator (12) présente des dents polaires (17) réparties uniformément à sa périphérie, avec un enroulement de stator polyphasé (25), chaque phase comprenant au moins un faisceau d'enroulement qui consiste en plusieurs bobines à simple dent (18). L'invention a également pour objet un procédé pour réaliser cette machine. Afin de simplifier au maximum la réalisation de l'enroulement de stator (25) en ce qui concerne sa technique de fabrication, les bobines à simple dent (18) sont enroulées en continu pour chaque faisceau d'enroulement, le début et/ou la fin de ces bobines à simple dent (18), étant respectivement orientés par une pièce de contact commune (U, V, W, Stp1, Stp2) associée à plusieurs bobines à simple dent, et ainsi reliés électriquement à celle-ci.
PCT/EP2005/055695 2004-12-27 2005-11-02 Machine electrique, en particulier moteur ec, et procede de realisation WO2006069841A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410062816 DE102004062816A1 (de) 2004-12-27 2004-12-27 Elektrische Maschine, insbesondere EC-Motor und Verfahren zu seiner Herstellung
DE102004062816.5 2004-12-27

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Publication Number Publication Date
WO2006069841A1 true WO2006069841A1 (fr) 2006-07-06

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WO (1) WO2006069841A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063908A1 (de) 2008-12-19 2010-06-24 Deutz Ag Dreiphasige elektrische Maschine
DE102021202034A1 (de) 2021-03-03 2022-09-08 Thyssenkrupp Ag Elektromotor für ein Kraftfahrzeug-Lenksystem und Kraftfahrzeug-Lenksystem
US11811287B2 (en) 2020-06-05 2023-11-07 Milwaukee Electric Tool Corporation Brushless motor for a power tool

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007014169U1 (de) * 2006-10-14 2008-02-28 Ebm-Papst St. Georgen Gmbh & Co. Kg Elektromotor
US8653711B2 (en) 2010-04-01 2014-02-18 Globe Motors, Inc. Parallel wound stator
PL2512008T3 (pl) * 2011-04-15 2018-04-30 Wilo Salmson France Zespół zawierający stojan i skrzynkę zaciskową do zasilania elektrycznego stojana
DE102012016914A1 (de) * 2012-08-22 2014-02-27 Ziehl-Abegg Ag Stator für elektrische Maschinen, insbesondere für Elektromotoren, Verfahren zur Herstellung einer Wickelung eines Stators sowie elektrische Maschine mit einem solchen Stator
JP2018129926A (ja) * 2017-02-08 2018-08-16 シナノケンシ株式会社 モータ及びその製造方法
DE102021105062A1 (de) 2021-03-03 2022-09-08 Minebea Mitsumi Inc. Verfahren zum Bewickeln eines Stators für eine elektrische Maschine sowie ein Stator und eine elektrische Maschine mit einem solchen Stator

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JPH04312335A (ja) * 1991-04-10 1992-11-04 Matsushita Electric Ind Co Ltd ブラシレスモータ
JP2001298919A (ja) * 2000-04-14 2001-10-26 Matsushita Electric Ind Co Ltd 電動機固定子の製造方法
JP2003102152A (ja) * 2001-09-21 2003-04-04 Aisin Seiki Co Ltd ステータへのコイル巻線方法
JP2003134716A (ja) * 2001-10-25 2003-05-09 Odawara Engineering Co Ltd 固定子コイルの並列結線方法とその固定子
US20030102765A1 (en) * 2001-10-24 2003-06-05 Pierburg Gmbh Electric motor
DE10213743A1 (de) * 2002-03-26 2003-10-09 Ebm Werke Gmbh & Co Kg Stator für Elektromotoren mit Wicklungs-Verschaltungsanordnung
US20040183388A1 (en) * 2003-03-19 2004-09-23 Pacsci Motion Control, Inc. Method for winding a stator of multi-phase motors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04312335A (ja) * 1991-04-10 1992-11-04 Matsushita Electric Ind Co Ltd ブラシレスモータ
JP2001298919A (ja) * 2000-04-14 2001-10-26 Matsushita Electric Ind Co Ltd 電動機固定子の製造方法
JP2003102152A (ja) * 2001-09-21 2003-04-04 Aisin Seiki Co Ltd ステータへのコイル巻線方法
US20030102765A1 (en) * 2001-10-24 2003-06-05 Pierburg Gmbh Electric motor
JP2003134716A (ja) * 2001-10-25 2003-05-09 Odawara Engineering Co Ltd 固定子コイルの並列結線方法とその固定子
DE10213743A1 (de) * 2002-03-26 2003-10-09 Ebm Werke Gmbh & Co Kg Stator für Elektromotoren mit Wicklungs-Verschaltungsanordnung
US20040183388A1 (en) * 2003-03-19 2004-09-23 Pacsci Motion Control, Inc. Method for winding a stator of multi-phase motors

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Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 145 (E - 1337) 24 March 1993 (1993-03-24) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 02 2 April 2002 (2002-04-02) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 08 6 August 2003 (2003-08-06) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09 3 September 2003 (2003-09-03) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063908A1 (de) 2008-12-19 2010-06-24 Deutz Ag Dreiphasige elektrische Maschine
WO2010078913A2 (fr) 2008-12-19 2010-07-15 Deutz Aktiengesellschaft Machine électrique triphasée
WO2010078913A3 (fr) * 2008-12-19 2010-09-10 Deutz Aktiengesellschaft Machine électrique triphasée
US11811287B2 (en) 2020-06-05 2023-11-07 Milwaukee Electric Tool Corporation Brushless motor for a power tool
DE102021202034A1 (de) 2021-03-03 2022-09-08 Thyssenkrupp Ag Elektromotor für ein Kraftfahrzeug-Lenksystem und Kraftfahrzeug-Lenksystem
WO2022184484A1 (fr) 2021-03-03 2022-09-09 Thyssenkrupp Presta Ag Moteur électrique pour un système de direction de véhicule à moteur, et système de direction de véhicule à moteur

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