WO2016162137A1 - Ensemble rotor pour un moteur électrique - Google Patents

Ensemble rotor pour un moteur électrique Download PDF

Info

Publication number
WO2016162137A1
WO2016162137A1 PCT/EP2016/053153 EP2016053153W WO2016162137A1 WO 2016162137 A1 WO2016162137 A1 WO 2016162137A1 EP 2016053153 W EP2016053153 W EP 2016053153W WO 2016162137 A1 WO2016162137 A1 WO 2016162137A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
teeth
rotor shaft
shaft
rotor body
Prior art date
Application number
PCT/EP2016/053153
Other languages
German (de)
English (en)
Inventor
Andrea BACK
Georg-Friedrich LÜHRS
Matthias Tasche
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to CN201680020794.5A priority Critical patent/CN107466435B/zh
Publication of WO2016162137A1 publication Critical patent/WO2016162137A1/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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections

Definitions

  • the invention relates to a rotor assembly for an electric machine, which comprises a rotor shaft, a rotor body rotatably mounted on the rotor shaft and at least two on the
  • the invention relates to an electric machine with a stator and a rotor assembly separated by an air gap from the stator. Furthermore, the invention relates to a vehicle with such an electric machine.
  • Such an electric machine in particular an electric machine in the form of a
  • permanently excited synchronous machine can be used for example as a prime mover in electric or hybrid vehicles. But even in industrial applications with demands on high speeds, such as in the field of textile or certain machine tools, a use of such electric machines is conceivable.
  • both the inner surface of the rotor body and the outer surface of the rotor shaft usually has a circular shape, so that the rotor body is rotatably mounted on the rotor shaft via a frictional connection by the rotor body pressed with its inner surface on the outer surface of the rotor shaft is.
  • the invention is therefore based on the object to provide a rotor assembly, an electric machine and a vehicle available, in which a load acting on a rotor body load is reduced and thus the life of the rotor body can be increased.
  • the rotor assembly according to the invention is characterized in that the rotor body is rotatably mounted on the rotor shaft via a positive connection.
  • a positive connection in particular an exclusively positive connection
  • the rotor body with the rotor shaft acting on the rotor body load or stress against a non-positive connection of the rotor body with the rotor shaft can be substantially reduced. Due to the lower load and the stresses occurring in the rotor body can be reduced, whereby a risk of the occurrence of stress cracks in the rotor body can be substantially reduced. The life of the rotor body and thus the entire rotor assembly can be significantly increased. In addition, a good mechanical transmission of the rotational movement of the rotor body to the rotor shaft is possible by means of the positive connection.
  • Inner surface of the rotor body formed, having at least one tooth
  • Internal toothing and is formed by a formed on an outer surface of the rotor shaft, at least one recess having external teeth.
  • Rotary movement of the rotor body can be reliably prevented relative to the rotor shaft, so that even without a frictional connection of the rotor body with the rotor shaft, a secure, rotationally fixed seat of the rotor body can be formed on the rotor shaft.
  • the one or more teeth of the internal toothing of the rotor body engage in the formation of the
  • External teeth of the rotor shaft preferably a precise fit.
  • the number of teeth of the internal toothing of the rotor body preferably corresponds to the number of recesses of the external toothing of the rotor shaft.
  • the internal toothing of the rotor body preferably has a plurality of teeth and the external toothing of the rotor shaft preferably has a plurality of recesses.
  • the plurality of teeth of the internal teeth of the rotor body is preferably distributed uniformly over the entire circumference of the inner surface of the rotor body.
  • the plurality of recesses of the external teeth of the Rotor shaft is preferably arranged distributed uniformly over the entire circumference of the outer surface of the rotor shaft. Due to the even distribution of the teeth or the
  • a plurality of teeth in this sense means a formation of at least two teeth on the inner surface of the rotor body.
  • a plurality of recesses means in this sense a training of at least two
  • the internal toothing preferably has more than two teeth distributed over the circumference of the inner surface of the rotor body.
  • the outer toothing preferably has more than two recesses distributed over the circumference of the outer surface of the rotor shaft.
  • the plurality of teeth of the internal toothing of the rotor body has a waveform and that the plurality of recesses of the external toothing of the rotor shaft also has a waveform.
  • the teeth or the recesses and the transition between two adjacent teeth or between two adjacent recesses are preferably not acute-angled in such a waveform, but have a curve shape.
  • the rotor body may be formed from at least two juxtaposed rotor laminations.
  • the two or more rotor laminations of a rotor body can in
  • Longitudinal extent of the rotor shaft can be arranged one behind the other, so that the rotor laminations form a laminated core, which in turn forms the rotor body.
  • each rotor plate preferably has an internal toothing having at least one tooth.
  • Each rotor plate can thus be positively connected on its own with the rotor shaft, so that a secure, rotationally fixed arrangement on the rotor shaft for each
  • Rotor plate can be ensured.
  • the internal toothing of a rotor plate may have one tooth, but preferably more than one tooth.
  • the outer toothing of the rotor shaft for each rotor plate has an outer tooth row in the longitudinal extent of the rotor shaft, wherein each
  • each Outer toothing row preferably has at least one recess.
  • each Outer gear row can accommodate a rotor plate, so that on each
  • the outer toothing of the rotor shaft in particular the individual recesses of the outer toothing of the rotor shaft, elongated, are formed in the form of grooves and each extend over a defined portion along the longitudinal extent of the rotor shaft, so that a plurality of juxtaposed rotor laminations with mutually adjacent teeth can each engage in a recess of the outer toothing of the rotor shaft, which means that, for example, a first tooth of an internal toothing of a first rotor plate and a first tooth of internal toothing of a second rotor plate arranged adjacent thereto can engage in one and the same recess of the external toothing of the rotor shaft ,
  • the at least one recess of a first row of external teeth offset from the at least one recess adjacent one of the first
  • outside toothing row arranged second outer toothing row is arranged.
  • the rotor laminations themselves can then be designed to be identical. Due to the staggered arrangement of the recesses of a first row of external teeth to the recesses of a second row of external teeth arranged adjacent thereto, a rotation of the rotor sheets relative to one another around the circumference of the rotor shaft can then be achieved despite the design of the rotor sheets of identical construction.
  • a rotation of the rotor laminations to one another can also be achieved in that the internal toothing of a first rotor plate is offset from the internal toothing of a second rotor plate arranged adjacent to the first rotor plate.
  • the teeth of a first rotor plate which form the internal teeth can then be offset from the teeth of a second rotor plate forming the internal teeth, so that the teeth of the first rotor plate are not formed congruently with the teeth of the second rotor plate.
  • the recesses of the outer toothing rows of the rotor shaft arranged adjacent to one another can then be congruently formed and no longer need to be offset relative to one another.
  • the object of the invention is further achieved by an electric machine, in particular a permanent-magnet synchronous machine, which has a stator and a rotor arrangement separated by an air gap from the stator, the rotor arrangement being formed and developed as described above.
  • Fig. 1 is a schematic sectional view of an electric machine according to the
  • Fig. 2 is a schematic representation of a rotor body formed of a plurality of juxtaposed arranged rotor laminations.
  • FIG. 1 shows a schematic sectional illustration of an electric machine 100 with a stator 10 and a separator arranged through an air gap 20 of the stator 10
  • the stator 10 has a plurality of adjacently arranged, groove-shaped openings 1 1 for receiving windings, not shown here.
  • the rotor assembly 30 has a rotor shaft 31, a rotor body 32 rotatably mounted on the rotor shaft 31, and a plurality of rotor bodies 32 arranged on the rotor body
  • the rotor body 32 is rotatably connected to the rotor shaft 31 via a positive connection.
  • an internal toothing 34 is formed on the inner surface of the rotor body 32 and an external toothing 35 is formed on the outer surface of the rotor shaft 31.
  • the internal toothing 34 of the rotor body 32 has a multiplicity of teeth 36 arranged adjacent to one another and the external toothing 35 of the rotor shaft 31 points a plurality of adjacently arranged recesses 37, wherein in each case a tooth 36 of the internal toothing 34 fit into each case a recess 37 a
  • External teeth 35 engages to form the positive connection.
  • the number of teeth 36 of the internal teeth 34 is equal to the number of recesses 37 of the external teeth 35.
  • the teeth 36 of the internal teeth 34 of the rotor body 32 are arranged uniformly distributed over the circumference of the inner surface of the rotor body 32, so that the distance of the adjacently disposed teeth 36 over the circumference of the inner surface of the rotor body 32 is the same.
  • the teeth 36 of the internal teeth 34 extend over the entire circumference of the inner surface of the rotor body 32.
  • the recesses 37 of the external toothing 35 of the rotor shaft 31 are arranged uniformly distributed over the circumference of the outer surface of the rotor shaft 31, so that the distance of the recesses 37 arranged adjacent to one another over the circumference of the outer surface of the rotor shaft 31 is the same.
  • the recesses 37 of the external teeth 35 extend over the entire circumference of the outer surface of the rotor shaft 31.
  • the teeth 36 of the internal teeth 34 of the rotor body 32 and the recesses 37 of the external teeth 35 of the rotor shaft 31 each have a waveform in which the teeth 36 and the recesses 37 have a curved shape and are not formed acute-angled. In this way, in addition to the formation of a positive connection and an electromagnetically optimal design of the inner surface of the rotor body 32 for
  • FIG. 2 shows a rotor body 32 which is formed from a plurality of rotor laminations 38, which are lined up in the axial direction.
  • the individual rotor laminations 38 have a very small thickness relative to the entire rotor body 32.
  • Each rotor plate 38 has a plurality of teeth having internal teeth 34, so that each rotor plate 38 can be positively connected to an outer toothing 35 of a rotor shaft 31.
  • Several juxtaposed rotor laminations 38 may form a laminated core.
  • the internal teeth 34 of the rotor laminations 38 arranged to form a laminated core are aligned with one another.
  • the inner toothings 34 of the rotor laminations 38 are preferably also aligned with each other via a plurality of laminated cores arranged in a row.
  • the position of the permanent magnets 33 with respect to the internal teeth 34 the rotor laminations 38 change over the individual laminated cores, whereby a kind of "rotor bevel" can be formed, by means of which a torque ripple can be reduced and acoustic effects can be minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

Ensemble rotor (30) pour un moteur électrique (100), qui comprend un arbre de rotor (31), un corps de rotor (32) monté solidaire en rotation sur l'arbre de rotor (31) et au moins deux aimants permanents (33) montés sur le corps de rotor (32), ledit corps de rotor (32) étant monté solidaire en rotation sur l'arbre de rotor (31) par l'intermédiaire d'un assemblage par complémentarité de forme.
PCT/EP2016/053153 2015-04-09 2016-02-15 Ensemble rotor pour un moteur électrique WO2016162137A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680020794.5A CN107466435B (zh) 2015-04-09 2016-02-15 用于电机的转子组件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015206295.3 2015-04-09
DE102015206295.3A DE102015206295A1 (de) 2015-04-09 2015-04-09 Rotoranordnung für eine Elektromaschine

Publications (1)

Publication Number Publication Date
WO2016162137A1 true WO2016162137A1 (fr) 2016-10-13

Family

ID=55353230

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/053153 WO2016162137A1 (fr) 2015-04-09 2016-02-15 Ensemble rotor pour un moteur électrique

Country Status (3)

Country Link
CN (1) CN107466435B (fr)
DE (1) DE102015206295A1 (fr)
WO (1) WO2016162137A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017215003A1 (de) * 2017-08-28 2019-02-28 Magna Auteca Gmbh Rotor für einen bürstenlosen Gleichstrommotor
EP3809560A1 (fr) * 2019-10-16 2021-04-21 Siemens Aktiengesellschaft Tôle de rotor, procédé de fabrication d'une tôle de rotor et machine électrique
DE102020114821A1 (de) 2020-06-04 2021-12-09 Schaeffler Technologies AG & Co. KG Rotor für eine permanenterregte Synchronmaschine zum elektrischen Antrieb eines Kraftfahrzeugs sowie Verfahren zur Herstellung eines Rotors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56112839A (en) * 1980-02-08 1981-09-05 Takashi Namiki Thin steel plate for rotor core of motor
DE102004056642A1 (de) * 2004-11-24 2006-06-01 Ziaei, Masoud, Dr. Einstellbare Profilkonturen mit mehreren Exzentrizitäten für formschlüssige Welle-Nabe-Verbindungen
WO2007137041A2 (fr) * 2006-05-16 2007-11-29 A.O.Smith Corporation Rotor antivibratoire pour machine tournante
WO2011085891A2 (fr) * 2009-12-21 2011-07-21 Robert Bosch Gmbh Rotor pour un moteur électrique
JP2011259689A (ja) * 2010-05-13 2011-12-22 Denso Corp ロータコア及びロータコアと回転軸の締結方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2468718A (en) * 2009-03-20 2010-09-22 Control Tech Dynamics Ltd Securing permanent magnets to a laminated rotor
CN102244429B (zh) * 2010-05-13 2014-09-03 株式会社电装 转子铁心以及转子铁心与旋转轴的紧固方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56112839A (en) * 1980-02-08 1981-09-05 Takashi Namiki Thin steel plate for rotor core of motor
DE102004056642A1 (de) * 2004-11-24 2006-06-01 Ziaei, Masoud, Dr. Einstellbare Profilkonturen mit mehreren Exzentrizitäten für formschlüssige Welle-Nabe-Verbindungen
WO2007137041A2 (fr) * 2006-05-16 2007-11-29 A.O.Smith Corporation Rotor antivibratoire pour machine tournante
WO2011085891A2 (fr) * 2009-12-21 2011-07-21 Robert Bosch Gmbh Rotor pour un moteur électrique
JP2011259689A (ja) * 2010-05-13 2011-12-22 Denso Corp ロータコア及びロータコアと回転軸の締結方法

Also Published As

Publication number Publication date
CN107466435B (zh) 2019-11-19
CN107466435A (zh) 2017-12-12
DE102015206295A1 (de) 2016-10-13

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