WO2019137606A1 - Moteur électrique d'unité auxiliaire pour véhicule à moteur - Google Patents

Moteur électrique d'unité auxiliaire pour véhicule à moteur Download PDF

Info

Publication number
WO2019137606A1
WO2019137606A1 PCT/EP2018/050619 EP2018050619W WO2019137606A1 WO 2019137606 A1 WO2019137606 A1 WO 2019137606A1 EP 2018050619 W EP2018050619 W EP 2018050619W WO 2019137606 A1 WO2019137606 A1 WO 2019137606A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
motor
support means
electric motor
auxiliary unit
Prior art date
Application number
PCT/EP2018/050619
Other languages
English (en)
Inventor
Andreas Wulf
Martin Helmis
Rolf JOSCHKO
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology Gmbh filed Critical Pierburg Pump Technology Gmbh
Priority to PCT/EP2018/050619 priority Critical patent/WO2019137606A1/fr
Priority to DE112018006830.7T priority patent/DE112018006830T5/de
Publication of WO2019137606A1 publication Critical patent/WO2019137606A1/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
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means

Definitions

  • Auxiliary unit electric motor for a motor vehicle The invention is directed to an auxiliary unit electric motor for a motor vehicle, preferably to an electric motor for a motor vehicle fuel tank purge pump.
  • the motor rotor is provided with two rotor support means being axially attached to axial rotor body end surfaces by screwing.
  • the rotor support means radially support the motor rotor.
  • the disclosed laminated rotor body is very complex and unfavorable for a compact motor setup.
  • the bore holes in the rotor body, which are required for the screwed joint, can also serve as starting point for a crack formation causing a rotor failure at high-speed rotation.
  • auxiliary unit electric motor for a motor vehicle It is an object of the invention to provide a compact and reliable auxiliary unit electric motor for a motor vehicle. This object is achieved with an auxiliary unit electric motor for a motor vehicle with the features of claim 1.
  • the auxiliary unit electric motor for a motor vehicle according to the Invention Is provided with a permanently magnetized motor rotor with a monolithic magnetic rotor body.
  • the monolithic rotor body can, for example, be cast on a rotor shaft,
  • the monolithic rotor body allows a simple and compact embodiment of the motor rotor and, as a result, of the electric motor.
  • the auxiliary unit electric motor for a motor vehicle is also provided with a motor stator with a stator body and at least one stator coil being energized to provide a stator magnetic field for driving the motor rotor.
  • the motor stator is provided with a single stator coil allowing a very compact electric motor.
  • the auxiliary unit electric motor for a motor vehicle Is also provided with at least one rotor support means being axially attached to and at least partially covering an end surface of the monolithic rotor body.
  • the rotor support means is attached to the rotor body by a large-area integral joint not requiring any mechanical deformation or structural damage of the rotor body so that the stability of the rotor body is not reduced by the attachment.
  • the rotor support means is provided permeably for the stator magnetic field to allow a reliable and efficient drive of the motor rotor by the stator magnetic field.
  • the rotor support means does not radially exceed the rotor body allowing a compact electric motor not requiring any additional radial space for the rotor support means.
  • the rotor support means radially supports the rotor body and, at least partially, compensates the extreme radial rotor body load caused by the centrifugal force during the high-speed rotor rotation, so that the reliability of the motor rotor and, as a result, of the electric motor is significantly improved.
  • the electric motor is provided with two rotor support means.
  • a first rotor support means is axially attached to and covering a first axial rotor body end surface
  • a second rotor support means is axially attached to and covering a second opposite axial rotor body surface.
  • Both rotor support means can be provided identically shaped.
  • both axial ends of the rotor body are provided with a rotor support means radially supporting the rotor body, This allows a very reliable motor rotor and, as a result, a very reliable electric motor.
  • the rotor cover means is adhesively bonded to the rotor body.
  • the adhesive bond is provided on the entire rotor cover means surface.
  • the adhesive bond does not cause any mechanical deformation or structural damage of the rotor body, which reduce the stability of the rotor body. This allows a very reliable embodiment of the electric motor.
  • the rotor support means is provided optically transparent allowing the application of an UV-curing adhesive for the attachment of the rotor support means to the rotor body. This allows a simple manufacturing of motor rotor.
  • the radial extent of the rotor cover means is substantially equal to the radial extent of the rotor body so that the rotor support means covers substantially the entire axial rotor body end surface.
  • the large contact area between the rotor cover means and the rotor body allows a very stable large-area attachment of the rotor support means, in particular in combination with an adhesive bonding.
  • the motor rotor is a permanently magnetized and monolithic ring magnet allowing a simple and compact embodiment of the motor rotor.
  • the motor rotor is provided with at least one balancing means balancing the motor rotor to allow a uniform rotation of the motor rotor.
  • the balancing means can be provided by adding or removing material at defined motor rotor positions. All balancing means of the motor rotor are provided at the rotor support means to avoid a mechanical deformation or structural damage of the rotor body caused by the balancing operation. This allows a very reliably electric motor.
  • figure 1 shows a schematic side view of an auxiliary unit electric motor for a motor vehicle according to the invention
  • figure 2 shows a schematic cross section of a motor rotor of the electric motor of figure 1.
  • FIG. 1 shows an auxiliary unit electric motor 10, for example for the application in a fuel tank purge pump of a motor vehicle.
  • the electric motor 10 comprises a motor stator 12 with a ferromagnetic stator body 14 and with a single stator coil 16, a permanently magnetized motor rotor 18 with a rotor shaft 20, and a motor control unit 22 being electrically connected to the stator coil 16 for energizing the stator coil 16.
  • FIG. 2 shows a schematic cross section of the motor rotor 18 with the rotor shaft 20.
  • the motor rotor 18 comprises a monolithic magnetic rotor body 24, which in the present embodiment of the invention is a permanently magnetized and monolithic ring magnet being cast on the rotor shaft 20.
  • the motor rotor 18 also comprises two rotor support means 26,28, which are permeable for the magnetic field generated by the motor stator 12 for driving the motor rotor 18.
  • the rotor support means 26,28 are provided of an optically transparent material, for example an optically transparent plastic.
  • the first rotor support means 26 is axially attached to a first axial rotor body end surface 30 via a first adhesive bond 32.
  • the second rotor support means 28 is axially attached to a second opposite axial rotor body end surface 34 via a second adhesive bond 36.
  • the rotor support means 26,28 are provided with a radial extent substantially equal to the radial extent of the rotor body 24, wherein the rotor support means 26,28 do not radially exceed the rotor body 24.
  • the adhesive bonds 32,36 substantially cover the entire axial rotor body end surfaces 30,34.
  • the motor rotor 18 is provided with rotor balancing means 38 being axially attached to the rotor- body- re mote axial surface 40 of the first rotor support means 26 to balance the motor rotor 18 and to thereby ensure a uniform motor rotor rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un moteur électrique d'unité auxiliaire pour un véhicule à moteur, comprenant un rotor de moteur à aimantation permanente (18) doté d'un corps de rotor magnétique monolithique (24), un stator de moteur doté d'un corps de stator et d'au moins une bobine de stator, la bobine de stator étant excitée afin de produire un champ magnétique de stator permettant d'entraîner le rotor de moteur (18), et au moins un moyen de support de rotor (26, 28), fixé axialement à une surface d'extrémité du corps de rotor axiale (30, 34) et recouvrant ladite surface, le moyen de support de rotor (26, 28) étant perméable pour le champ magnétique de stator, et le moyen de support de rotor (26, 28) ne dépassant pas radialement le corps de rotor (24).
PCT/EP2018/050619 2018-01-11 2018-01-11 Moteur électrique d'unité auxiliaire pour véhicule à moteur WO2019137606A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2018/050619 WO2019137606A1 (fr) 2018-01-11 2018-01-11 Moteur électrique d'unité auxiliaire pour véhicule à moteur
DE112018006830.7T DE112018006830T5 (de) 2018-01-11 2018-01-11 Hilfsaggregat-Elektromotor für ein Kraftfahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/050619 WO2019137606A1 (fr) 2018-01-11 2018-01-11 Moteur électrique d'unité auxiliaire pour véhicule à moteur

Publications (1)

Publication Number Publication Date
WO2019137606A1 true WO2019137606A1 (fr) 2019-07-18

Family

ID=61007684

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/050619 WO2019137606A1 (fr) 2018-01-11 2018-01-11 Moteur électrique d'unité auxiliaire pour véhicule à moteur

Country Status (2)

Country Link
DE (1) DE112018006830T5 (fr)
WO (1) WO2019137606A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334254A (en) * 1965-06-03 1967-08-01 Garrett Corp Dynamoelectric machine
WO2001011755A1 (fr) * 1999-08-09 2001-02-15 Perm Motor Gmbh Machine electrique a flux axial
DE102007054582A1 (de) * 2006-12-11 2008-06-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Elektrische Maschine
CN203707906U (zh) 2012-01-19 2014-07-09 三星电子株式会社 电机的转子
EP3091640A1 (fr) * 2015-05-05 2016-11-09 Robert Bosch Gmbh Rotor pour machine a flux axial

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334254A (en) * 1965-06-03 1967-08-01 Garrett Corp Dynamoelectric machine
WO2001011755A1 (fr) * 1999-08-09 2001-02-15 Perm Motor Gmbh Machine electrique a flux axial
DE102007054582A1 (de) * 2006-12-11 2008-06-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Elektrische Maschine
CN203707906U (zh) 2012-01-19 2014-07-09 三星电子株式会社 电机的转子
EP3091640A1 (fr) * 2015-05-05 2016-11-09 Robert Bosch Gmbh Rotor pour machine a flux axial

Also Published As

Publication number Publication date
DE112018006830T5 (de) 2020-09-24

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