WO2013037553A2 - Stator pour machine électrique - Google Patents

Stator pour machine électrique Download PDF

Info

Publication number
WO2013037553A2
WO2013037553A2 PCT/EP2012/064511 EP2012064511W WO2013037553A2 WO 2013037553 A2 WO2013037553 A2 WO 2013037553A2 EP 2012064511 W EP2012064511 W EP 2012064511W WO 2013037553 A2 WO2013037553 A2 WO 2013037553A2
Authority
WO
WIPO (PCT)
Prior art keywords
stator
segments
segment
ring
coils
Prior art date
Application number
PCT/EP2012/064511
Other languages
German (de)
English (en)
Other versions
WO2013037553A3 (fr
Inventor
Karl-Juergen Roth
Hussam Helmi
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 CN201280044550.2A priority Critical patent/CN104040836A/zh
Publication of WO2013037553A2 publication Critical patent/WO2013037553A2/fr
Publication of WO2013037553A3 publication Critical patent/WO2013037553A3/fr

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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores

Definitions

  • the invention relates to a stator for an electric machine, in particular for a permanent-magnet synchronous motor, according to the preamble of claim 1.
  • an internal rotor motor is described, the stator of which has a stator ring and a plurality of circumferentially uniformly distributed, radially inwardly extending carrier teeth for receiving energizable coils.
  • the stator ring consists of individual toothed segments, each having a radial carrier tooth on a yoke or yoke segment, wherein in the mounted state, the yoke segments placed against one another form the continuous stator ring.
  • nub-shaped elevations or corresponding recesses are arranged on the peripheral end faces of the yoke segments, which engage in a form-fitting manner in the mounted state.
  • the invention has for its object to provide a stator for an electric motor with simple design measures, which can be easily assembled and is characterized by high efficiency.
  • the stator according to the invention is used in electric machines, in particular in permanent-magnet synchronous motors, which can be used for example as servo motors in motor vehicles, for example as a servomotor for seat adjustment or as servomotor for steering assistance.
  • An application is also independent of motor vehicles, for example in hand tools or in electric bicycles (pedelecs).
  • the stator for the electric machine has a plurality of stator segments, which in the assembled state form a continuous stator ring.
  • Each stator segment has at least three carrier teeth for receiving in each case an energizable coil and a yoke segment, which is part of the stator ring and at the same time carrier of the carrier teeth.
  • At least three radially extending carrier teeth are arranged on each cup-shaped yoke segment.
  • the partially annular yoke segment forms the radially outer, circumferentially extending portion of the stator, from which the support teeth extend radially inwardly, wherein the at least three support teeth are arranged one behind the other in the circumferential direction.
  • the yoke segment and the support teeth are preferably formed in one piece, wherein optionally also a separate embodiment is contemplated, in which the yoke segment and the support teeth are interconnected.
  • the arrangement of at least three carrier teeth, each with one coil per stator segment, is particularly suitable for so-called 3/2 topologies in which the ratio of number of teeth to number of poles is 3: 2.
  • Each carrier tooth is a carrier of an energizable coil, which is wound from a coil wire.
  • all coils are wound on the carrier teeth of a common stator segment of a common, continuous coil wire.
  • the assembly of the stator is simplified because at least three carrier teeth and an associated yoke segment form a coherent structural unit, so that the number of components to be mounted for the stator is reduced compared to segments with only one carrier tooth.
  • the stability of the stator is increased because the stator segments extend over a larger angle portion than in the case of only one carrier tooth. Since all the coils of a stator segment consist of a common, continuous coil wire, there is only one wire start and one wire end per stator segment.
  • This configuration is preferably used as a delta connection, in each case a phase connection is formed between two coils and the two coil wire ends are brought together to form a further, third phase connection.
  • Each stator segment thus forms a threefold group, wherein the stator segments which are combined to form a complete circle can be connected in parallel with the respectively present delta-connected circuits by connecting identical phase connections to the different stator segments in parallel.
  • Another advantage of the embodiment according to the invention lies in the possibility of obtaining a higher number of turns per coil with a thinner coil wire and thus a better filling factor as well as an improved possibility of adaptation of the characteristic curve.
  • the higher fill factor also increases the electric power of the electric machine equipped with such a stator.
  • the phase connections arranged between two coils advantageously project radially over and are formed as a wire loop.
  • the wire loop extends in particular beyond the radial outer side of the stator segment or beyond the outer side of the yoke segment.
  • the third phase terminal which is formed by the two coil wire ends, does not necessarily project radially beyond the outside of the stator segment, but can be configured such that the coil wire ends are bent in the axial direction and are within the radius that is from the outside of the coil Yoke segments is formed.
  • the two adjacent coil wire ends are expediently at least approximately - in the circumferential direction - in the middle of the stator segment, ie at the level of the middle coil, but advantageously in the axial direction above the coil.
  • the adjoining yoke segments which form the outer ring, are joined together in a suitable manner.
  • welding along the end faces of adjoining yokes may be considered.
  • segments either by single welds or a continuous weld.
  • an axially centrally arranged, circumferential fastening ring for example a rubber ring.
  • other connection measures are also possible, for example positive connections on the front sides of adjacent yoke segments.
  • FIG. 1 is a perspective view of a stator for a stator of an electrical machine, with a circular yoke segment, on which three radially inwardly extending support teeth are arranged, which are each carrier of an energizable coil, wherein the coils of a common, continuous Coil wire are wound,
  • FIG. 3 shows a stator composed of a plurality of stator segments in a perspective view
  • FIG. 4 shows a further stator segment in a perspective view with a fastening ring arranged centrally on the outside for fixing the stator segments
  • FIG. 5 a view corresponding to FIG. 4 of a stator segment, but with two attachment rings arranged on the front side, FIG.
  • FIG. 6 shows the detail VI of FIG. 5 in an enlarged view
  • Fig. 7 is a schematic diagram of the phase connections of the arranged in delta connection coils of the stator segments, wherein coil groups of different stator segments are connected in parallel.
  • the same components are provided with the same reference numerals.
  • FIGS. 1 and 2 each show a stator segment 1 for the stator of a permanent magnet synchronous motor.
  • the stator segment 1 is part of the stator, wherein a plurality of stator segments 1 are assembled to the stator.
  • Each stator segment 1 comprises a part-circular yoke segment 2, which forms the circumferential stator ring in the assembled state, and three carrier teeth 3, 4, 5 extending radially inwardly, which are arranged one behind the other in the circumferential direction on the inside of the yoke segment 2.
  • the yoke segment 2 and the carrier teeth 3, 4, 5 may be integrally formed. But also comes in a two-part design, in which case the support teeth 3, 4, 5 are held on the inside of the yoke segment 2 and connected thereto.
  • the stator segment 1 is composed of three individually produced individual segments, wherein the individual segments have exactly one carrier tooth 3, 4, 5.
  • Each of the three carrier teeth 3, 4, 5 is the carrier of an energizable coil 6, 7 and 8, respectively.
  • All three coils 6, 7, 8 of the stator segment 1 are wound from a common, continuous coil wire 9. The winding takes place in such a way that the coil wire 9 is wound adjacent to a circumferential end face of the stator segment to form an outer coil 6 or 8, then forms the middle coil 7 and finally the opposite, outer coil 8 or 6
  • the free coil wire ends 9a and 9b are guided from the peripheral edge to the center of the stator segment and bent axially upwards.
  • a stator 15 is shown with a continuous stator ring, which is composed of individual yoke segments 2.
  • the stator consists of a total of six individual stator segments 1 and thus has eighteen coils, wherein three phase terminals 10, 1 1, 12 for phases U, V, W are arranged per stator segment.
  • adjacent yoke segments 2 are welded together via three axially distributed spot welds 16. In this way, a firm connection of the individual stator segments 1 is achieved.
  • a fastening ring 17 is arranged on the outer side of the yoke segment 2, which extends axially centrally on the outside of the yoke segment 2 and encloses all the stator segments 1 in the region of the wall of the yoke segment 2.
  • the fastening ring 17 is formed for example as a rubber ring.
  • a total of two fastening rings 17 are arranged on the outer side of the yoke segment 2, wherein the fastening rings 17 enclose all yoke segments or stator segments.
  • the fastening rings 17 are located on the two axially opposite end faces of the yoke segment 2 and can, as shown in the enlarged detail of FIG. 6, engage over them in the radial direction.
  • Fig. 7 the interconnection is shown at the phase terminals on each stator segment 1 in a schematic manner.
  • the phase connections are connected in parallel so that identical phase connections 10, 11, 12 of the various stator segments 1 are connected in parallel and can be assigned to the phases U, V and W.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Stator pour une machine électrique, qui comporte une pluralité de segments formant une bague de stator, et des dents de support destinées à recevoir des bobines auxquelles un courant peut être appliqué, ainsi que des segments de culasse situés radialement à l'extérieur et formant la face externe de la bague de stator. Chaque segment de stator comporte trois dents de support destinées à recevoir chacune une bobine, toutes les bobines d'un segment de stator étant bobinées à partir d'un fil commun et continu.
PCT/EP2012/064511 2011-09-14 2012-07-24 Stator pour machine électrique WO2013037553A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280044550.2A CN104040836A (zh) 2011-09-14 2012-07-24 用于电机的定子

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082665.3 2011-09-14
DE201110082665 DE102011082665A1 (de) 2011-09-14 2011-09-14 Stator für eine elektrische Maschine

Publications (2)

Publication Number Publication Date
WO2013037553A2 true WO2013037553A2 (fr) 2013-03-21
WO2013037553A3 WO2013037553A3 (fr) 2014-06-12

Family

ID=46551573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/064511 WO2013037553A2 (fr) 2011-09-14 2012-07-24 Stator pour machine électrique

Country Status (3)

Country Link
CN (1) CN104040836A (fr)
DE (1) DE102011082665A1 (fr)
WO (1) WO2013037553A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213025A1 (de) * 2014-07-04 2016-01-07 Zf Friedrichshafen Ag Spule für eine elektrischen Maschine
DE102015212821A1 (de) 2015-07-09 2017-01-12 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Statoranordnung, elektrische Drehstrommaschine und Verfahren zum Herstellen einer Statoranordnung
DE102017206845A1 (de) * 2017-04-24 2018-10-25 Robert Bosch Gmbh Stator für einen Elektromotor
DE102017216080A1 (de) * 2017-09-12 2019-03-14 Robert Bosch Gmbh Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators
DE102017220705A1 (de) * 2017-11-20 2019-05-23 Robert Bosch Gmbh Vorrichtung für eine elektrische Maschine
DE102020200516A1 (de) 2020-01-17 2021-07-22 Robert Bosch Gesellschaft mit beschränkter Haftung Isoliermaskeneinheit, Verfahren zum Bewickeln eines Grundkörpers einer elektrischen Maschine und elektrische Maschine
DE102021205242A1 (de) * 2021-05-21 2022-11-24 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Verfahren zur Ausbildung einer Statorwicklung, Vollblechstator und Elektromotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043424A1 (de) 2004-09-06 2006-03-09 Sew-Eurodrive Gmbh & Co. Kg Elektromotor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2888142B2 (ja) * 1993-11-08 1999-05-10 三菱電機株式会社 回転電動機並びにその製造方法
JP2002176753A (ja) * 2000-12-07 2002-06-21 Matsushita Electric Ind Co Ltd 電動機固定子の製造方法及びその固定子
DE102005051380A1 (de) * 2005-10-27 2007-05-03 Zf Friedrichshafen Ag Stator einer E-Maschine
US7348706B2 (en) * 2005-10-31 2008-03-25 A. O. Smith Corporation Stator assembly for an electric machine and method of manufacturing the same
DE102010049620A1 (de) * 2009-11-16 2011-05-19 Schaeffler Technologies Gmbh & Co. Kg Statorbaueinheit, insbesondere für mehrphasige elektrische Maschinen und Verfahren zur Herstellung einer derartigen Statorbaueinheit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043424A1 (de) 2004-09-06 2006-03-09 Sew-Eurodrive Gmbh & Co. Kg Elektromotor

Also Published As

Publication number Publication date
DE102011082665A1 (de) 2013-03-28
WO2013037553A3 (fr) 2014-06-12
CN104040836A (zh) 2014-09-10

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