WO2013120570A2 - Support de stator pour machine électrique - Google Patents

Support de stator pour machine électrique Download PDF

Info

Publication number
WO2013120570A2
WO2013120570A2 PCT/EP2013/000052 EP2013000052W WO2013120570A2 WO 2013120570 A2 WO2013120570 A2 WO 2013120570A2 EP 2013000052 W EP2013000052 W EP 2013000052W WO 2013120570 A2 WO2013120570 A2 WO 2013120570A2
Authority
WO
WIPO (PCT)
Prior art keywords
stator
electric machine
region
carrier
holding
Prior art date
Application number
PCT/EP2013/000052
Other languages
German (de)
English (en)
Other versions
WO2013120570A3 (fr
Inventor
Werner König
Rainer SIGLE
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 WO2013120570A2 publication Critical patent/WO2013120570A2/fr
Publication of WO2013120570A3 publication Critical patent/WO2013120570A3/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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks

Definitions

  • the invention relates to a stator for an electric machine according to the preamble of claim 1.
  • stator support can be found, for example, in DE 10 2009 020 613 A1 as known.
  • the stator carrier serves to hold stator elements of a stator of an electric machine.
  • the stator includes, for example, segmented, i. separate
  • stator which are held together by the stator to a ring.
  • stator support the cohesion of the stator elements per se, for example by pressing, generate or support the already assembled stator.
  • stator carrier has at least one holding region, in which the stator elements can be fastened to the stator carrier and thereby on
  • the stator carrier is used in particular to support the stator relative to a housing of the electric machine.
  • the stator itself may be a housing part of the housing.
  • the stator can be supported on the stator and thereby experiences a counter-torque, so that a rotor of the electric machine can rotate relative to the stator.
  • the stator carrier has at least one
  • Attachment area via which the stator is fastened to the housing or to another housing part of the housing.
  • the stator To drive the rotor, the stator is energized.
  • the energization causes magnetic forces in the stator.
  • due to alternating fields in the stator it comes to a vibrational excitation, resulting in noticeable and unpleasant noise can result.
  • the vibrations may propagate to the passenger compartment and be perceived by occupants of the passenger compartment. This affects the ride comfort of the motor vehicle.
  • the invention provides that the
  • Holding region and the mounting portion are connected to each other via a vibration isolation structure of the stator.
  • the holding portion of the attachment region is at least substantially vibration decoupled, so that a
  • Vibration transmission due to the vibration excitations from the holding region of the stator via its mounting area in the housing or the housing part is avoided or takes place only to a very limited extent.
  • the vibration decoupling structure damps outgoing from the holding area and originating from the stator vibrations, so that a forwarding over the
  • the stator support according to the invention is therefore particularly advantageously usable in an electric machine for a motor vehicle designed as a hybrid vehicle or electric vehicle, which can be driven at least in a supportive manner by means of the electric machine.
  • a very high ride comfort can be realized for occupants of the motor vehicle.
  • the vibration decoupling structure preferably comprises a plurality of juxtaposed recesses and / or passage openings at least a wall of the stator carrier.
  • the stator is, for example perforated and / or otherwise structured broken. This is a geometry of the stator carrier.
  • Stator carrier has a lower rigidity.
  • stator is through the recesses and / or
  • stator carrier can be different in different directions or axes
  • the vibration decoupling capability of the vibration decoupling structure can be formed as required and targeted, so that the stator carrier, for example, in a first direction, a relatively small
  • Stiffness for damping the vibrations and in a different, second direction has a higher rigidity for realizing a fixed connection of the stator on the housing part.
  • the holding region and the attachment region are formed integrally with each other.
  • the stator is integrally formed.
  • the stator is particularly inexpensive to produce.
  • the stator can thereby by means of a deep drawing process, pressing process, casting process, extrusion process or by means of a
  • the vibration decoupling structure can be produced during the manufacturing process, for example, simultaneously with a forming process and / or a primary molding process.
  • the vibration decoupling structure can be replaced by a corresponding design
  • vibration decoupling structure at least partially in a subsequent process step to the corresponding manufacturing process and to the already produced stator for example, by drilling and / or otherwise, form spannabarnides method.
  • the vibration decoupling structure without a material change or material difference and without connection work can be produced. In other words, therefore, no other material is provided and required for producing the vibration decoupling structure than for producing the holding region and the fastening region.
  • the particular one-piece stator is preferably formed of a metallic material, but may be made of a different material.
  • the stator according to the invention is suitable for both internal rotor electrical machines and external rotor electrical machines.
  • the holding region and the fastening region are spaced apart in the axial direction of the stator carrier. It is the
  • Vibration decoupling structure arranged in the axial direction between the holding portion and the mounting portion. This is a particularly advantageous
  • the stator according to the invention also allows a space and
  • Material accumulations in the region of the connection with the housing part are not provided and are not required to dampen the vibrations or a
  • FIG. 1 in fragmentary form a schematic longitudinal sectional view of a
  • Electric machine with a rotor and with a stator, which is fastened via a stator to a housing part of the electric machine, wherein the stator has a vibration decoupling structure, by means of which a transmission of vibrations from the stator to the housing is kept at least low;
  • Fig. 2 is a schematic perspective view of an embodiment of the
  • Fig. 3 is a schematic perspective view of another embodiment of the
  • Fig. 1 shows an electric machine 10 for a trained example as a passenger cars cars.
  • the electric machine 10 may be integrated in a transmission of the motor vehicle and serve to drive the motor vehicle via the gearbox electric motor and thus emission-free.
  • the electric machine 10 can also serve, for example, to start a combustion engine of the motor vehicle, for example designed as a reciprocating internal combustion engine and coupled or coupleable to the transmission, and thus to assume the function of a starter.
  • the electric machine 10 comprises a rotor 12 and a rotor carrier 14, to which the rotor 12 is attached.
  • the rotor 12 is a plurality of individual
  • Rotor segments include, which are interconnected by means of the rotor carrier 14.
  • the electric machine 10 also includes a stator 16, which in the present case a
  • stator core with individual stator segments.
  • stator 16 with the stator 16
  • Stator segments is attached to a stator 18 of the electric machine 10.
  • the stator support 18 is fixed to a housing 20 of the electric machine 10.
  • the stator support 18 on two mounting portions 22, 24, which are spaced apart in the axial direction of the stator support 18 and the electric machine 10.
  • the stator support 18 is fastened to the housing 20 via its attachment regions 22, 24.
  • the stator carrier 18 is supported on the housing 20 and can provide a counter-moment for the rotor 12, so that when the stator 16 is energized, the rotor 12 with the rotor carrier 14 can rotate about an axis of rotation 26 relative to the stator carrier 18 and relative to the housing 20.
  • stator support 18 is connected to the housing 20 via a respective clamping by at least one oblique edge in the attachment areas 22, 24, i. jammed with the housing 20.
  • stator carrier 18 in its attachment regions 22, 24, for example, also have screw-on straps, via which the stator carrier 18 is screwed to the housing 20.
  • stator support 18 may also be connected to the housing 20 by caulking, gluing, welding and / or otherwise.
  • the stator support 18 has a holding region 28, which is arranged in the axial direction between the attachment regions 22, 24.
  • the attachment regions 22, 24 in the axial direction in each case outwardly adjoin the holding region 28.
  • the attachment regions 22, 24 are integrally formed with the holding region 28.
  • a cooling jacket 30 is provided for cooling the stator support 18 and via this the stator 16.
  • the cooling jacket 30 is formed by a cooling region 32 of the stator carrier 18 and the housing 20.
  • the stator carrier 18 is spaced from the housing 20 in the radial direction.
  • Cooling channel 34 is limited, which in the circumferential direction completely, i.
  • the cooling channel 34 can be flowed through by a coolant, for example cooling air or a cooling liquid, and thus ensure efficient heat removal from the stator support 18.
  • a coolant for example cooling air or a cooling liquid
  • stator carrier 18 is formed from a single-walled metal and has in the cooling region 32
  • stator support 18 Based on the axial direction of the stator support 18 is slightly conical, so that the stator 18 can be introduced with the stator 16 in a simple manner in the housing 20 and clamped in a predeterminable by the conical configuration and defined position with the housing 20. Subsequently, the stator support 18 is secured in position with the stator 16 by means of a clamping device 37.
  • stator 16 By energizing the stator 16 during operation of the electric machine 10, it may be energizing the stator 16 during operation of the electric machine 10.
  • respective vibration decoupling structures 38 are provided, via which the retaining area 28 is connected to the respective fastening areas 22, 24.
  • the respective vibration decoupling structures 38 are disposed in the axial direction between the holding portion 28 and the attachment portions 22, 24.
  • the respective one comprises
  • Vibration decoupling structure 38 a plurality of openings or
  • stator support 18 is deliberately weakened, whereby the vibrations due to the energization of the stator 16 are at least partially damped and a transfer of these from the holding portion 28 on the mounting portions 22, 24 is kept at least very low or avoided.
  • connection of the holding portion 28 with the mounting portions 22, 24 is still strong enough to support the stator 16 and to ensure the torque support for the rotor 12 without causing damage to the load and / or
  • the vibration decoupling structures 38 or one of them can basically everywhere in the axial direction between the holding portion 28 and the mounting portions 22, 24 and thus also in radial overlap with the stator 16 on the stator 18
  • the vibration decoupling structures 38 are arranged outside the cooling region 32, so that a particularly large-area and uninterrupted cooling of the stator carrier and thus of the stator 16 is possible.
  • respective sealing elements in particular sealing rings, are provided which extend laterally in the axial direction
  • Holding region 28 are arranged.
  • the first holding region 28 is arranged.
  • Vibration decoupling structures 38 also outside the sealing elements, i. arranged cover-free to the cover elements, so that a particularly advantageous tightness of the cooling jacket 30 is realized.
  • the effective and efficient cooling of the stator carrier 18 and thus of the stator 16 is particularly beneficial in that the attachment regions 22, 24 adjoin the holding region 28 in the axial direction to the outside. This allows the
  • Cooling area 32 may be formed over a particularly large area, so that the coolant Centrally or centrally between the mounting portions 22, 24 arranged stator 16 advantageously flow around and can dissipate heat therefrom.
  • the jamming of the stator carrier 18 with the housing 20 can be realized by a respective thickening, wherein the respective vibration decoupling structure 38 can also be arranged on the thickening.
  • the passage openings 40 can be formed in the circumferential direction as elongated slots, which are delimited by particularly narrow webs 42 in the circumferential direction.
  • the passage openings 40 are at least substantially circular and form a perforation of the one-piece stator carrier 18.
  • the through holes 40 are also formed as elongated slots in the circumferential direction.
  • the webs 42 delimiting the through-opening 40 are wider than the webs 42 according to FIG. 2.
  • the stator carrier 18 according to FIG. 4 has only one vibration-decoupling structure 38 between the holding region 28 and the fastening region 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un support de stator destiné à maintenir au moins un élément de stator (16) d'une machine électrique (10), lequel comprend au moins une zone de maintien (28), dans laquelle ledit au moins un élément de stator (16) peut être fixé au support de stator (18), et au moins une zone de fixation (22, 24) par l'intermédiaire de laquelle le support de stator (18) peut être fixé à une partie de carter (20) de la machine électrique (10), la zone de maintien (28) et la zone de fixation (22, 24) étant reliées l'une à l'autre par l'intermédiaire d'une structure de découplage vibratoire (38) du support de stator (18).
PCT/EP2013/000052 2012-02-16 2013-01-10 Support de stator pour machine électrique WO2013120570A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012003101A DE102012003101A1 (de) 2012-02-16 2012-02-16 Statorträger für eine Elektromaschine
DE102012003101.7 2012-02-16

Publications (2)

Publication Number Publication Date
WO2013120570A2 true WO2013120570A2 (fr) 2013-08-22
WO2013120570A3 WO2013120570A3 (fr) 2014-04-10

Family

ID=47557140

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/000052 WO2013120570A2 (fr) 2012-02-16 2013-01-10 Support de stator pour machine électrique

Country Status (2)

Country Link
DE (1) DE102012003101A1 (fr)
WO (1) WO2013120570A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013112605A1 (de) 2013-11-15 2015-05-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Antriebsmodul für ein Fahrzeug
DE102015119797A1 (de) * 2015-11-16 2017-05-18 Volkswagen Ag Statoranordnung
DE102020207236A1 (de) * 2020-06-10 2021-12-16 Zf Friedrichshafen Ag Statoranordnung einer elektrische Maschine und elektrische Maschine zum Antreiben eines Kraftfahrzeugs
DE102020116661A1 (de) 2020-06-24 2022-02-17 Witzenmann Gmbh Lageranordnung in einem Elektromotor, Elektromotor mit einer solchen Lageranordnung und Verwendung eines Elektromotors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009020613A1 (de) 2008-08-13 2010-02-18 Daimler Ag Verfahren und Vorrichtung zum kraftschlüssigen Verbinden eines Statorelements und eines Statorträgers einer Elektromaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027872A1 (de) * 2009-07-21 2011-01-27 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Anordnung zur akustischen Entkopplung eines Stators eines Elektromotors
JP5651371B2 (ja) * 2010-04-30 2015-01-14 株式会社東芝 回転電機
DE102011108043A1 (de) * 2011-07-19 2012-01-26 Daimler Ag Segmentierter Statorträger und Stator für eine elektrische Maschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009020613A1 (de) 2008-08-13 2010-02-18 Daimler Ag Verfahren und Vorrichtung zum kraftschlüssigen Verbinden eines Statorelements und eines Statorträgers einer Elektromaschine

Also Published As

Publication number Publication date
WO2013120570A3 (fr) 2014-04-10
DE102012003101A1 (de) 2013-08-22

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