EP3577743A1 - Stator pour un moteur électrique - Google Patents

Stator pour un moteur électrique

Info

Publication number
EP3577743A1
EP3577743A1 EP18702246.2A EP18702246A EP3577743A1 EP 3577743 A1 EP3577743 A1 EP 3577743A1 EP 18702246 A EP18702246 A EP 18702246A EP 3577743 A1 EP3577743 A1 EP 3577743A1
Authority
EP
European Patent Office
Prior art keywords
stator
winding
encapsulation
stator core
webs
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
EP18702246.2A
Other languages
German (de)
English (en)
Inventor
Michael Sturm
Werner Müller
Thomas Ehrler
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co 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 Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP3577743A1 publication Critical patent/EP3577743A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02K1/223—Rotor cores with windings and permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • 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
    • H02K15/10—Applying solid insulation to windings, stators or rotors
    • 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
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • 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
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components
    • 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
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the invention relates to a stator for an electrodynamic machine, in particular an electric motor.
  • stator for an electric motor, inter alia, a stator.
  • the stator is for this purpose formed of individual electric sheets.
  • stator has a number of stator poles (or webs), which extend radially into the interior of the stator or radially outwardly grooved stator packets. Between the individual stator poles there are gaps in Shape of pole or winding grooves.
  • the stator poles serve this purpose
  • the inner surface of the stator, the stator poles (lands) and the Polnuten is encapsulated with a plastic or coated.
  • the pole grooves can also be insulated with insulating paper.
  • the plastic may be, for example, polymers such as e.g. Thermoset or
  • Thermoplastic act.
  • the plastic encapsulation typically forms around the individual stator poles the winding supports which serve to accommodate the stator coils.
  • stator for a drive device.
  • the stator in this case has two axial stator ends, on each of which a connection element, for example a bearing plate or a cover, is arranged.
  • connection element for example a bearing plate or a cover
  • stator has in its interior a plurality of webs which extend over the entire length of the stator and which are divided by winding grooves. Around the bridges is one
  • Stator winding or stator coil attached. Between the webs and the stator winding a slot insulation is provided.
  • stator packs in larger lengths of z. B. lengths greater than 100 mm in which the
  • An object of the present invention is to overcome the above-mentioned disadvantages and to provide a stator, which has a sufficiently thin insulating wall thickness, in particular for large axial lengths. This object is achieved by the feature combination according to claim 1.
  • a basic idea of the present invention is a
  • the individual modular stator packs are mounted axially in series on the front side after their separate encapsulation by means of connecting means preferably integrated on the stator packs Produce Umspritzungs slaughter, so that can be achieved in a composite in this way stator compared to a single stator body of the same length lower thicknesses or Isolierwandproofn.
  • a stator for an electric motor with a modular stators consisting of at least two axially arranged in series Statorversen, each formed of a plurality of stacked electrical sheets, which form winding poles with radially extending webs, wherein the respective stator packs have a separate extrusion coating from each other.
  • the respective extrusion coating is applied to the inner surface of the respective stator in the winding area, on the winding webs and on the Polnuten between the winding poles.
  • corresponding connecting means are provided, which produce the mechanical connection between the respective stator.
  • the connecting means are arranged on the front-side abutment surfaces of the stator packs.
  • the connecting means are formed as protruding latching means on the one stator packet, which dive in the form of corresponding openings on the second stator in accordance with trained counter-locking means in the form of corresponding openings. It is further preferred if, along the winding poles, plastic webs protrude circumferentially from the end face of the one stator packet and extend into the respective corresponding intermediate spaces of the winding poles of the adjacent stator packet. For this purpose, z. B. the
  • Encapsulation can be recessed or reset in the corresponding corresponding area on the other stator packet.
  • stator packs no Encapsulation on the surfaces corresponding to the plastic webs, preferably therefore no encapsulation on the inner surface in the winding area, have on the winding webs and on the Polnuten between the winding poles.
  • two or all of the stator packages arranged axially in series have the same or approximately the same axial length. It is even more preferable if the stator packs are all constructed identically, so that the production can be carried out in a particularly cost-optimized manner. Depending on the desired design, end plates or connecting rings can then be mounted on the stator packs.
  • the invention is applicable to both straight and obliquely grooved stator packs. It is advantageously provided that the groove ends of the grooves of one stator packet are aligned with the groove beginning of the respective corresponding grooves of the adjacent stator packet, so that in each case continuous pole grooves are present along the stator body. The same applies to obliquely extending Polnuten, in which the course of the grooves of the one
  • the respective end faces of the end plates of the two stator packets are likewise encapsulated, preferably in a thickness of approximately 0.3 mm to approximately 0.6 mm.
  • a further aspect of the present invention relates to a method for producing a stator as explained above with the steps:
  • stator axial alignment of the stator to each other and mechanically connecting the first and at least second stator at front-side connecting elements to a stator.
  • connection in step c) without tools takes place only by a Georgiasteckrea or joining process.
  • the primary holding force of the stator packets to each other is later produced by the wire windings.
  • Fig. 1 is a perspective view of two stator in one
  • Fig. 2 is a perspective view of a stator of two
  • FIG. 3 is a perspective view of an alternative embodiment of two stator packs in a pre-assembled state for manufacturing a stator body; a perspective view of the two end plates of the stator packs of Figure 1 and
  • FIG. 5 is a perspective view of the two end plates of Stator packages from FIG. 3.
  • FIGS. 1 and 3 each show a perspective view of two stator packs 10, 20 in a pre-assembly state for producing a stator body 2.
  • FIG. 2 shows a perspective view of such a stator body 2 from two stator packs 10, 20.
  • the stator body 2 forms, together with the end covers and the Verschaltetring V not yet wound stator 1 for an electric motor.
  • the illustrated stator 1 consisting in these embodiments of two axially arranged in series stator 10, 20 which abut on the Anlag 16 shown in Figure 2 together.
  • the stator packages 10, 20 are each formed of a plurality of stacked electric sheets 11, 21. These form 12 winding poles 16, 26 with radially outwardly extending winding webs 17, 27 in this example.
  • the stator packs 10, 20 have a separate encapsulation U1, U2. As shown in FIGS.
  • the respective extrusion coating U1, U2 can be seen on the respective inner surface of the respective stator core 10, 20 in the winding region, on the winding webs 17, 27 and on the end faces between the pole grooves N, ie between the winding poles 16, 26 applied.
  • FIG 4 is further a perspective view of the two end plates (11e, 21 e) of the stator 10, 20 of the embodiment of Figure 1
  • in Figure 5 is a perspective view of the two end plates (11e, 21e) of the stator 10, 20 shown in the embodiment of Figure 3.
  • Corresponding connection means 19, 29, which effect the mechanical connection between the respective stator packs 10, 20, are provided on the two end face-side electrical sheets 11e, 21e of two stator pacts 10, 20 for producing a stator 1.
  • the connection can be carried out without tools by the design of the connecting means 19, 29 by only by a Caribbeansteck- the assembly is effected.
  • the connecting means 19 shown are formed as protruding latching means, which dive into the correspondingly formed on the second stator 20 corresponding counter-locking means 29 in the form of corresponding openings by clamping.
  • an indexing 8 in the form of a recess can be provided in the electrical sheets.
  • plastic webs 30 project around the winding poles 16 from the end face of one stator packet 10 around the interspaces of the winding poles into the groove N.
  • plastic webs 30 of the stator 10 extend in the assembled state of the two stator 10, 20 in the respective corresponding spaces of the winding poles 26 of the other stator 20 in it.
  • a plurality of immediately adjacent end-mounted electric plates 21, 21 e of the second stator packet 20 without encapsulation U2 on the inner surface F in the winding region, the winding webs 17, 27 and no encapsulation U2 at the Polnuten 24 between the winding poles 26 executed.
  • This paragraph is shown schematically by a circumferential line L in Figure 5.
  • the inner surfaces to achieve the required clearance and creepage distances in the illustrated area of the inner surface F in the sheet must be reset and additionally encapsulated.
  • a version without this encapsulation would be possible, but this would lead to lower air and creepage distances.
  • stator packets The primary holding force of the stator packets to each other is later produced by the wire windings.
  • stator packets loosely inserted electrical sheets on the front sides (joints) do not fan out, they are in the Nut Scheme (along the winding paths) inserted recessed end plates (about 4 end plates with a dimension of about 2mm) and the resulting heel formation and encapsulation positively held axially together.
  • the end plates (for example the 4 mentioned end plates), which do not experience an axial positive fit of the encapsulation, can be glued to the last encapsulated Elelktro sheet during the overmolding process and thus likewise can no longer fan out axially.
  • the grooves N of the stator packs 10, 20 mounted together are aligned. This is ensured by virtue of the fact that the groove ends 14e of the grooves 14 of the one stator packet 10 shown in FIGS. 4 and 5 coincide with the groove start 24a respectively corresponding grooves 24 of the adjacent stator 20 are aligned so that each continuous oblique pole N along the stator 2 are present.
  • the respective end faces of the end plates 11e, 21e of the two stator 10, 20 are also encapsulated in a thickness of about 0.3 mm.
  • the invention is not limited in its execution to the above-mentioned preferred embodiments.
  • the invention can also be grooved for designs with straight grooves and for inside

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un stator (1) destiné à un moteur électrique et comportant un corps de stator (2) de conception modulaire composé d'au moins deux ensembles stator (10, 20) agencés axialement en série et constitués chacun d'une pluralité de tôles magnétiques empilées (11, 21) qui forment des pôles d'enroulement (16, 26) munis de traverses d'enroulement (17, 27), les ensembles stator (10, 20) présentant séparément un enrobage (U1, U2).
EP18702246.2A 2017-02-06 2018-01-26 Stator pour un moteur électrique Pending EP3577743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017102255.4A DE102017102255A1 (de) 2017-02-06 2017-02-06 Stator für einen Elektromotor
PCT/EP2018/052019 WO2018141656A1 (fr) 2017-02-06 2018-01-26 Stator pour un moteur électrique

Publications (1)

Publication Number Publication Date
EP3577743A1 true EP3577743A1 (fr) 2019-12-11

Family

ID=60275943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18702246.2A Pending EP3577743A1 (fr) 2017-02-06 2018-01-26 Stator pour un moteur électrique

Country Status (5)

Country Link
US (1) US11336133B2 (fr)
EP (1) EP3577743A1 (fr)
CN (1) CN206650510U (fr)
DE (1) DE102017102255A1 (fr)
WO (1) WO2018141656A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020130581A1 (de) 2020-11-19 2022-05-19 Wittenstein Se Stator für einen Elektromotor
DE102022103897A1 (de) 2022-02-18 2023-08-24 Ebm-Papst Mulfingen Gmbh & Co. Kg Stator für eine elektrische Maschine sowie Verfahren zur Herstellung eines solchen

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189191B (de) * 1961-08-21 1965-03-18 Danfoss Ved Ing M Clausen Nutenisolation fuer einen im Kaeltemittelkreislauf liegenden Elektroantriebsmotor einer Kaeltemaschine
JPH0614506A (ja) * 1992-06-24 1994-01-21 Fanuc Ltd 多段型誘導電動機
JP2003032936A (ja) * 2001-07-16 2003-01-31 Matsushita Electric Ind Co Ltd 電動機
JP3696813B2 (ja) * 2001-07-24 2005-09-21 三菱電機株式会社 車両用交流発電機の固定子
US6930427B2 (en) * 2002-09-30 2005-08-16 Reliance Electric Technologies, Llc Electric apparatus having a stator with insulated end laminations within the central opening of end plates
US20040061409A1 (en) * 2002-09-30 2004-04-01 Grant Barron D. Method for making electrical stator and stator made by same
US7005764B2 (en) * 2003-12-29 2006-02-28 Petersen Technology Corporation Electrodynamic apparatus and method of manufacture
US8450898B2 (en) * 2006-09-01 2013-05-28 Resmed Motor Technologies Inc Insulator for stator assembly of brushless DC motor
DE102006043893B4 (de) 2006-09-19 2008-10-02 Siemens Ag Polzahn mit Permanentmagnet
DE102007000372A1 (de) 2007-07-10 2009-01-15 Hilti Aktiengesellschaft Antriebsvorrichtung für ein Handwerkzeuggerät
JP2010220288A (ja) * 2009-03-13 2010-09-30 Mabuchi Motor Co Ltd コアブロック及び該コアブロックを用いたモータ用の磁極コア
EP2434618B1 (fr) 2010-09-24 2014-03-19 Siemens Aktiengesellschaft Rotor à segment d'une machine électrique
JP5857799B2 (ja) * 2012-02-29 2016-02-10 アイシン・エィ・ダブリュ株式会社 ハイブリッド励磁式回転電機
US20150048708A1 (en) * 2012-03-12 2015-02-19 Höganäs B (Publ) Stator and rotor for an electric machine
JP2014014231A (ja) * 2012-07-04 2014-01-23 Mitsubishi Heavy Ind Ltd 電動モータ
WO2014011763A1 (fr) * 2012-07-11 2014-01-16 Remy Technologies, Llc Stator de machine électrique segmenté maintenu par cerclage, et procédé de fabrication
JP6116298B2 (ja) * 2013-03-15 2017-04-19 本田技研工業株式会社 回転電機ユニットの配置構造
EP2882077A1 (fr) 2013-12-04 2015-06-10 HILTI Aktiengesellschaft Bloc stator avec barrière d'écoulement
DE102014221204B4 (de) 2014-10-20 2017-04-06 Schaeffler Technologies AG & Co. KG Hybridmodul sowie Herstellungsverfahren eines Hybridmoduls für ein Fahrzeug
CN107040069B (zh) * 2016-02-03 2020-10-16 德昌电机(深圳)有限公司 电机及其定子
DE102017213904A1 (de) * 2017-08-10 2019-02-14 Bayerische Motoren Werke Aktiengesellschaft Rotor

Also Published As

Publication number Publication date
DE102017102255A1 (de) 2018-08-09
US20190356181A1 (en) 2019-11-21
CN206650510U (zh) 2017-11-17
US11336133B2 (en) 2022-05-17
WO2018141656A1 (fr) 2018-08-09

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