WO2011098103A2 - Stator de machine électrique - Google Patents

Stator de machine électrique Download PDF

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Publication number
WO2011098103A2
WO2011098103A2 PCT/EP2010/007165 EP2010007165W WO2011098103A2 WO 2011098103 A2 WO2011098103 A2 WO 2011098103A2 EP 2010007165 W EP2010007165 W EP 2010007165W WO 2011098103 A2 WO2011098103 A2 WO 2011098103A2
Authority
WO
WIPO (PCT)
Prior art keywords
stator
individual
recess
segment
bulge
Prior art date
Application number
PCT/EP2010/007165
Other languages
German (de)
English (en)
Other versions
WO2011098103A3 (fr
Inventor
Hans-Peter Merten
Ulrich Schweizer
Tobias Buban
Michael GRÜNER
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2011098103A2 publication Critical patent/WO2011098103A2/fr
Publication of WO2011098103A3 publication Critical patent/WO2011098103A3/fr

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
    • H02K1/12—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 of an electric machine according to the preamble of claim 1.
  • the generic document US 6049153 A describes a stator of an electrical machine.
  • the stator has a stator carrier and individual segments, which are manufactured as separate parts at the beginning of the production of the stator.
  • the individual segments are then assembled to form a stator ring, wherein the individual segments are in free contact with an adjacent individual segment, which is referred to below as a composite state of the individual segments.
  • the individual segments assembled to form a stator ring are pressed into the stator carrier, so that the stator carrier
  • the stator has a first single segment and a second single segment, wherein the first single segment a bulge and the second single segment a
  • the bulge of the first individual segment and the recess of the second individual segment are formed such that in the assembled state of the individual segments only a portion of the bulge with a portion of the Recess has a contact surface. Between another portion of the bulge and the recess forms a gap, the size depending on
  • Forming of the bulge and the recess is designed.
  • the second individual segment has a deformable part which is arranged on the portion of the recess of the second individual segment, which is in contact with the bulge of the first individual segment.
  • Recess of the second single segment of the bulge of the first single segment adapted so that the contact surface of the bulge of the first single segment with the recess of the second single segment in the pressed state is greater than in the assembled state in which the deformable part is still undeformed.
  • the contact surface between the bulge of the first individual segment and the recess of the second individual segment is greater in the pressed-in state than in the assembled state, so that the magnetic flux in the stator can flow unhindered over the contact surface between the individual segments.
  • the individual segments are assembled to form a stator ring whose
  • each individual segment must be produced very precisely and precisely.
  • the press-in force can compress the outer diameter of the stator ring by deforming the deformable member to the value specified by the stator.
  • the recess of the second individual segment adapts to the pressing-in of the bulge of the first individual segment, so that the bulge projects further into the recess and the outer diameter of the stator ring is reduced.
  • the fault tolerance of the individual segments is increased because production inaccuracies in the pressed state can be compensated by deforming the deformable part.
  • the individual segments are easier and cheaper to manufacture.
  • the stator of an electric machine is characterized in that the deformable part of the single segment is deformable mainly in the radial direction of the stator ring.
  • the deformable part of the second individual segment has a shape such that a force when pressing the stator ring in the stator in the stator in Circumferential direction, resulting in a radial deformation of the deformable part.
  • the deformable part of the second individual segment can have a structural weakening of the individual segment material, which in the region of the contact surface of the bulge of the first individual segment with the recess of the second
  • the radial arrangement of the structural weakening of the deformable part favors the deformation of the deformable part in the radial direction.
  • the structural weakening can be achieved by a material recess in the deformable part or by a small material thickness in the region of the deformable part.
  • the deformable part is shaped in such a way that during pressing in a clearance between the deformable part and the stator results in the material of the deformable part during deformation is pressed. In the pressed state, the deformable part has the same volume as before the deformation. There are no additional forces and stresses due to material compression, which burden the material of the single segment.
  • a material recess on the radially outer region of the stator ring in the region of the deformable part causes a structural weakening of the area and forms with the stator support a free space into which the deformable part is deformable. The material recess prevents a material overhang, which is a hindrance to the press-in process in the stator.
  • stator of an electrical machine is characterized in that in the pressed state of the individual segments have at least 90 percent of a surface of the bulge of the first single segment with a surface of the recess of the second single segment contact.
  • the magnetic flux flows, which is affected by material transitions. At the contact surfaces between the individual segments of the magnetic flux flows undisturbed, so that the largest possible contact surface between the individual segments of the stator favors the magnetic flux.
  • the stator of an electric machine is characterized in that the first individual segment has a recess and the second individual segment has a bulge.
  • each individual segment has an adjacent individual segment, with which it forms a toothing, so that the stability of the stator ring is increased.
  • the production inaccuracy of the individual segments adds up in the stator ring and results in an inaccuracy of the outer diameter of the stator ring.
  • a plurality of individual segments with a deformable part are provided in the stator ring, so that the outer diameter of the stator ring can be adapted to the stator carrier.
  • deformable part distributed symmetrically in the stator are the forces that act when pressed into the stator, symmetrical, so that the assembly is easily possible.
  • stator of an electrical machine is characterized in that all the individual segments have the same shape.
  • each individual segment has a deformable part
  • the deformation of precisely one deformable part in the pressed-in state can correct the production inaccuracy of exactly one individual segment.
  • the production is facilitated by a high fault tolerance of the individual segments.
  • stator of an electrical machine is characterized in that each individual segment is constructed from a laminated core.
  • the shape of the single segment can be particularly easily by punching the
  • FIG. 1 shows a stator of an electrical machine, which is composed of individual segments
  • Fig. 2 shows a detail of a stator of individual segments, in a
  • Fig. 3 is an enlarged detail of a stator of individual segments, in which the individual segments are assembled before being pressed into the stator and
  • Fig. 4 is an enlarged detail of a stator of individual segments, in which the individual segments are pressed into the stator.
  • FIG. 1 shows an axial view of a stator ring 7 which has individual segments 3a, 3b.
  • the stator ring 7 has a first individual segment 3a and an adjacent, second individual segment 3b, the first individual segment 3a having a bulge 4 and the second individual element 3b having a recess 5.
  • the bulge 4 is arranged on the side of the first individual segment 3a facing the second individual segment 3b, and the recess 5 on the side of the second individual segment facing the first individual segment 3a 3b arranged.
  • the bulge 4 of the first individual segment 3 a protrudes into the recess 5 of the second individual segment 3 b and the bulge 4 touches the recess 5.
  • all the individual segments have the same shape.
  • the bulge 4 and the recess 5 interlock the individual segments with each other and stabilize the stator ring 7.
  • the stator 7 has a
  • FIG. 2 shows a detail of a stator 1, which has a stator carrier 2 and
  • Individual segments 3a, 3b, as in Figure 1 has.
  • the adjacent individual segments 3a, 3b are shown, wherein the bulge 4 of the individual segment 3a projects into the recess 5 of the individual segment 3b and is in contact therewith.
  • the first individual segment 3a has at the, the bulge 4 opposite side via a recess 5 'and the second single segment 3b has at the, the
  • Recess 5 opposite side on a bulge 4 ' Recess 5 opposite side on a bulge 4 '.
  • the individual segments have the same shape, so that in this case, the bulge 4 and 4 ', and the recess 5 and 5' have a same shape.
  • An illustrated configuration of the bulge 4 of the single segment 3a is a continuation arranged centrally on the circumferential side surface to the adjacent individual segment 3b, which consists in the axial view in the basic form of a trapezoid followed by a triangle,
  • the side surfaces of the triangle with the side surfaces of the trapezoid enclose an angle smaller than 180 °, so that the triangle is steeper than the trapezoid and the bottom sides of the trapezoid flush with both the triangle and with the single segment 3a to lock.
  • the recess 5 is centered on a side surface of the single segment 3b in
  • a shape of the recess 5 corresponds to the basic shape of the bulge 4 from a combination of a trapezoid and a rounded triangle, wherein the aspect ratios between triangle and trapezium in the recess 5 to the aspect ratios of the bulge 4 differ. Due to the difference of the aspect ratios, the shape of the bulge 4 resembles the shape of the recess 5, but the shape is not the same.
  • the individual segment 3b has a deformable part 6, which is arranged on the recess 5.
  • the detail shows the individual segments in a pressed-in state in which the individual segments 3a, 3b are pressed into the stator carrier 2.
  • the deformable part 6 is deformed such that the recess 5 of the bulge 4 is adjusted.
  • the bulge 4 touches the
  • FIG. 3 shows an enlarged section of the two adjacent individual segments 3 a, 3 b from FIG. 2 in the assembled state, in which the individual segments 3 a, 3 b are assembled without force to the stator ring 7 and not yet compressed in the stator carrier 2.
  • the deformable part 6 is still undeformed and so shown in the magnification.
  • the bulge 4 touches the recess 5 only in a portion 4a.
  • the subregion 4a forms with a subregion 5a of the recess 5 a contact surface 9a between the two adjacent individual segments 3a, 3b.
  • the deformable part 6 is arranged.
  • Another portion 4c of the bulge 4 forms with the recess 5 a gap.
  • the deformable part 6 is deformed such that the recess 5 of the bulge 4 is adjusted and the gap is closed, so that the bulge 4 touches the recess 5 almost over the entire surface.
  • the deformable part 6 is designed so that when pressed into the stator 2, the press-in force deforms the deformable part 6, especially radially outward.
  • FIG. 4 shows a section of the two adjacent sections analogous to FIG
  • the deformable part 6 is deformed by the pressing in the stator 2 in the radial direction outwards and so shown in the enlargement.
  • the radial extent of the deformable part 6 extends through the deformation mainly in the radial direction to the stator 2, the inner diameter of the
  • a portion 4b of the bulge 4 forms a contact area 9b with a portion 5b of the recess 5.
  • the surface of the contact surface 9b is larger than the surface of the contact surface 9a, which forms between the individual segments 3a and the single segment 3b in the assembled state in Figure 2.
  • Another portion 4d of the bulge 4 is not in contact with the recess 5 and forms a gap between the portion 4d of the bulge 4 and the recess 5.
  • the shape of the bulge 4 is selected such that the largest possible proportion of the surface of the bulge. 4 the contact surface 9b to the recess 5 forms.
  • the magnetic flux in the stator flows undisturbed over the contact surface 9b from the individual segment 3a
  • Another possible basic shape of the bulge would be a Gaussian curve-shaped outline, wherein the recess would also have an outline in Gaussian curve shape with other parameters.
  • a different Curvature along the Gauss-curve-shaped outline results in the assembled state of the individual segments also a portion of the bulge, which forms a contact surface with the recess and another portion of the bulge, which forms a gap with the recess.
  • the basic shape of the outline of the convexity and the recess in Gaussian curve shape has the same functional features as the illustrated shape of the bulge 4 and recess 5 as a combination of a trapezium with a rounded triangle.

Landscapes

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

Abstract

L'invention concerne un stator de machine électrique comprenant un support de stator et des segments individuels (3a, 3b). Un premier segment individuel (3a) présente un renflement (4) et un deuxième segment individuel (3b) présente un évidement (5) de sorte qu'à l'état assemblé, lorsque les segments individuels assemblés sans effort forment une couronne de stator (7), le renflement (4) du premier segment individuel (3a) rentre dans l'évidement (5) du deuxième segment individuel (3b). Par ailleurs, le deuxième segment individuel (3b) comporte une partie déformable (6) qui est située au niveau de l'évidement (5) et peut se déformer lorsque la couronne de stator (7) est enfoncée dans le support de stator.
PCT/EP2010/007165 2010-02-13 2010-11-25 Stator de machine électrique WO2011098103A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010007885.9 2010-02-13
DE201010007885 DE102010007885A1 (de) 2010-02-13 2010-02-13 Stator einer elektrischen Maschine

Publications (2)

Publication Number Publication Date
WO2011098103A2 true WO2011098103A2 (fr) 2011-08-18
WO2011098103A3 WO2011098103A3 (fr) 2012-01-19

Family

ID=44310372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/007165 WO2011098103A2 (fr) 2010-02-13 2010-11-25 Stator de machine électrique

Country Status (2)

Country Link
DE (1) DE102010007885A1 (fr)
WO (1) WO2011098103A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219535A1 (de) * 2013-09-27 2015-04-02 Mahle International Gmbh Statoranordnung für einen Elektromotor
EP3432447A4 (fr) * 2016-03-18 2019-11-13 Kabushiki Kaisha Yaskawa Denki Machine dynamo-électrique et procédé de fabrication de machine dynamo-électrique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114280A1 (de) 2011-09-26 2013-03-28 Daimler Ag Stator einer elektrischen Maschine
DE102014211254B4 (de) 2014-06-12 2016-01-14 Schaeffler Technologies AG & Co. KG Stator einer elektrischen Maschine und Verfahren zur Herstellung eines Stators

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6049153A (en) 1996-02-23 2000-04-11 Matsushita Electric Industrial Co., Ltd. Motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3651263B2 (ja) * 1998-05-29 2005-05-25 日本精工株式会社 分割磁極型電動モータ
JP4546213B2 (ja) * 2004-10-21 2010-09-15 本田技研工業株式会社 モータおよびモータを搭載した電動パワーステアリング装置
JP4807219B2 (ja) * 2006-10-20 2011-11-02 トヨタ自動車株式会社 ステータコアおよび回転電機
JP2009044880A (ja) * 2007-08-09 2009-02-26 Jtekt Corp モータ及び電動パワーステアリング装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6049153A (en) 1996-02-23 2000-04-11 Matsushita Electric Industrial Co., Ltd. Motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219535A1 (de) * 2013-09-27 2015-04-02 Mahle International Gmbh Statoranordnung für einen Elektromotor
EP3432447A4 (fr) * 2016-03-18 2019-11-13 Kabushiki Kaisha Yaskawa Denki Machine dynamo-électrique et procédé de fabrication de machine dynamo-électrique
US10855123B2 (en) 2016-03-18 2020-12-01 Kabushiki Kaisha Yaskawa Denki Rotating electrical machine and producing method of rotating electrical machine

Also Published As

Publication number Publication date
WO2011098103A3 (fr) 2012-01-19
DE102010007885A1 (de) 2011-08-18

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