WO2022223763A1 - Entraînement électrique de véhicule - Google Patents

Entraînement électrique de véhicule Download PDF

Info

Publication number
WO2022223763A1
WO2022223763A1 PCT/EP2022/060660 EP2022060660W WO2022223763A1 WO 2022223763 A1 WO2022223763 A1 WO 2022223763A1 EP 2022060660 W EP2022060660 W EP 2022060660W WO 2022223763 A1 WO2022223763 A1 WO 2022223763A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
rotor shaft
electric drive
bearing
spline
Prior art date
Application number
PCT/EP2022/060660
Other languages
German (de)
English (en)
Inventor
Matthias WESA
Original Assignee
Zf Friedrichshafen 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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2022223763A1 publication Critical patent/WO2022223763A1/fr

Links

Classifications

    • 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
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • 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
    • H02K7/003—Couplings; Details of shafts
    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • F16C2380/27—Motor coupled with a gear, e.g. worm gears

Definitions

  • the present invention relates to an electric drive for a vehicle with at least one electric machine. Furthermore, the invention relates to a vehicle with an electric drive.
  • a drive unit for a motor vehicle with an electric machine with a base-fixed stator and a radially rotatable rotor inside the stator is known, which is carried by a rotor shaft.
  • the rotor shaft is rotatably gela siege on the one hand by means of a rotor shaft bearing and on the other hand via a planetary gear supported on the base.
  • the rotor shaft and a gear shaft designed as a sun gear shaft are designed in one piece. Due to the one-piece design of the rotor shaft and gear shaft, the outside diameter is necessarily large. This not only results in higher losses, but also higher production costs.
  • the present invention is based on the object of proposing an electric drive and a vehicle with an electric drive which ensure the lowest possible losses and low production costs.
  • an electric drive for a vehicle with at least one electric machine is thus proposed.
  • a rotor shaft of the electric machine is coupled to a transmission shaft via a spline, the rotor shaft being mounted via the spline and via a first fixed bearing on the end of the rotor shaft facing away from the spline is and wherein the Ge is mounted transmission shaft via a second fixed bearing and a floating bearing.
  • the proposed electric drive has a particularly efficient bearing arrangement, since the rotor shaft in particular is supported on the gear shaft via the splines, without an additional bearing being required. This also reduces the losses in the electric drive, especially at low temperatures.
  • an axial preload can be omitted and the overall power density in the electric drive can be increased. Far ner results in a cost-effective and simpler assembly, so that not only the efficiency is increased, but also the manufacturing costs are reduced in the electrical drive's.
  • the outside diameter is preferably smaller in the area of the floating and fixed bearings of the transmission shaft than the outside diameter, preferably in the area of the fixed bearing of the rotor shaft. Since the bearings of the rotor shaft, in contrast to the bearings of the gear shaft, can be dimensioned smaller, the overall diameter of the electrical machine is smaller, which reduces the space requirement. At the same time, there is more space available for the larger gear shaft bearings. In addition, the manufacturing costs are reduced because, in contrast to the rotor shaft, the transmission shaft necessarily consists of higher-quality material due to the smaller outer diameter, which reduces the overall material costs.
  • a plug-in toothing is provided on the mutually facing ends of the transmission shaft and the rotor shaft for the non-rotatable connection in the electric drive.
  • Various structural designs of the spline are conceivable. It is particularly advantageous for reducing the outer diameter if, for example, the end of the rotor shaft facing the transmission shaft has a journal section with external teeth as part of the spline and if the end of the transmission shaft facing the rotor shaft has a hub section or the like with internal teeth as part of the spline, wherein the journal portion of the rotor shaft is formed by a diameter step or the like on the rotor shaft. It is also possible that the journal section on the transmission shaft and the hub section of the rotor shaft. Gearing of any design can be used as internal and external gearing, which enables the rotor shaft and the gear shaft to be connected to one another in a rotationally test manner.
  • the diameter step with the reduced outer diameter area on the rotor shaft or the gear shaft can be used in a particularly advantageous manner in order to assign at least one sealing element or the like to this area.
  • the sealing function between the gear area and the rotor area is made possible at low cost with the smallest possible diameter.
  • a radial shaft sealing ring or the like can be used as a sealing element, for example, with which sealing is carried out radially.
  • any type of bearing can be used.
  • cheaper ball bearings or grooved ball bearings can be used for the fixed bearing, while a cylinder roller bearing, for example, is used for the floating bearing.
  • At least one spur gear or a spur gear z. B. as part of egg ner translation or the like for connecting to an output are preferably assigned between the floating bearing and the fixed bearing of the transmission shaft.
  • the spur gear as a transmission component can, for example, form a transmission stage or the like.
  • the transmission shaft can preferably do this or the rotor shaft or alternatively both the rotor shaft and the transmission shaft have an axial bore or generally a fluid channel or the like for supplying lubricant to the spline.
  • the fluid channel or channels can coincide with the geometric central axis of said corrugations or run parallel or skewed to the central axis.
  • a further aspect of the invention provides that a vehicle with the electric drive described above is also claimed.
  • the advantages already described and further advantages result from this.
  • FIG. 1 shows a schematic partial view of a first embodiment of an electric drive according to the invention
  • Fig. 2 is a schematic partial view of a second embodiment of the electrical drive's rule with a modified bearing arrangement.
  • Fig. 3 is a schematic partial view of a third embodiment of the electrical drive rule with an alternatively designed splines
  • Fig. 4 shows a schematic partial view of a fourth embodiment variant of the electrical drive's with a radial shaft sealing ring in the area of the plug-in teeth;
  • Fig. 5 is a schematic partial view of a fifth embodiment of the electrical drive rule with a parking lock wheel on a transmission shaft;
  • Fig. 6 is a schematic partial view of a sixth embodiment of the electrical drive rule with an alternative arrangement position of the parking lock gear on the transmission shaft;
  • FIG. 7 shows a schematic partial view of a seventh embodiment variant of the electric drive with a further alternative arrangement position of the parking lock wheel on the transmission shaft;
  • Fig. 8 is a schematic partial view of an eighth embodiment of the electrical drive rule with a next alternative arrangement position of the parking lock wheel on the transmission shaft;
  • FIG. 9 shows a schematic partial view of a ninth embodiment of the electrical drive's with the parking lock wheel on a rotor shaft; and
  • FIG. 10 shows a schematic partial view of a tenth embodiment variant of the electrical drive with an alternative arrangement position of the parking lock gear on the rotor shaft.
  • the electrical drive includes, among other things, a rotor shaft 1 which carries a rotor which is arranged coaxially with a stator of the electrical machine, not shown in any more detail, in a housing.
  • the rotor shaft 1 is connected to a gear shaft 3 via a spline 2 .
  • the transmission shaft 3 is ultimately connected, for example, via a spur gear 4 with an output, not shown, the spur gear 4 can be part of a translation or a gear stage, for example.
  • the rotor shaft 1 and the transmission shaft 3 are connected to one another in a rotationally fixed manner via the spline 2, with the rotor shaft 1 being mounted on the one hand via the spline 2 and on the other hand via a first fixed bearing 5 on the end of the rotor shaft 1 facing away from the spline 2. Furthermore, in the proposed electric drive, the transmission shaft 3 is mounted on the one hand via a second fixed bearing 6 and on the other hand via a floating bearing 7 . This results in a particularly cost-effective and efficient bearing for the electrical machine.
  • Figure 1 shows a first embodiment variant of the electric drive in which, for example, the end of the gear shaft 3 facing away from the spline 2 is assigned a cylindrical roller bearing as a floating bearing 7 and the end of the gear shaft 3 facing the spline 2 is assigned a deep groove ball bearing as a second fixed bearing 6. Furthermore, the end of the rotor shaft 1 facing away from the spline 2 is assigned a Ril lenkugellager as the first fixed bearing 5 .
  • a centrally located axial bore 14 for supplying oil to the splines 2 in the transmission shaft 3 and also in the rotor shaft 1 is indicated for all of the embodiment variants described here.
  • a second embodiment of the electric drive provides that the arrangement position of the second fixed bearing 6 and the floating bearing 7 on the transmission shaft 3 is reversed.
  • Figure 4 shows a fourth embodiment of the electric drive in which, in contrast to the first embodiment, it is provided that the reduced Outside diameter area of the diameter stage 10 on the rotor shaft 1 is assigned a log telement, for example as a radial shaft seal 12 .
  • Figures 5 to 10 show different arrangement variants of a parking lock gear 13 on the rotor shaft 1 or on the transmission shaft 3 of the electric drive.
  • FIG. 5 shows a fifth embodiment variant of the electric drive, in which the parking lock wheel 13 is arranged on the transmission shaft 3 between the loose bearing 7 and the second fixed bearing 6 .
  • FIG. 6 shows a sixth embodiment variant of the electric drive, in which the parking lock wheel 13 is arranged on the transmission shaft 3 outside of the Losla gers 7 and the second fixed bearing 6 when viewed axially.
  • the parking lock wheel 13 is associated with the end of the transmission shaft 3 facing away from the spline 2 .
  • FIG. 7 shows a seventh embodiment variant of the electric drive, in which the parking lock wheel 13 is also arranged inside the loose bearing 7 and the second fixed bearing 6 when viewed axially.
  • the parking lock gear 13 is assigned to the spur gear 4 of the transmission shaft 3 oppositely seen axially.
  • FIG. 8 shows an eighth embodiment variant of the electric drive, in which, in contrast to the sixth embodiment variant, the parking lock gear 13 is arranged on the end of the transmission shaft 3 facing the spline 2 .
  • FIG. 1 A ninth embodiment variant of the electric drive is shown in FIG.
  • FIG. 10 shows a tenth embodiment variant of the electric drive, in which the parking lock wheel 13 is assigned to the end of the rotor shaft 1 facing away from the splines 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un entraînement électrique d'un véhicule, comprenant au moins une machine électrique, un arbre de rotor (1) de la machine électrique étant couplé à un arbre de transmission (3) par l'intermédiaire d'une denture de clavetage (2), l'arbre de rotor (1) étant monté par l'intermédiaire de la denture de clavetage (2) et par l'intermédiaire d'un premier palier fixe (5), sur l'extrémité, opposée à la denture de clavetage (2), de l'arbre de rotor, et l'arbre de transmission (3) étant monté par l'intermédiaire d'un deuxième palier fixe (6) et d'un palier libre (7). L'invention concerne en outre un véhicule équipé de l'entraînement électrique.
PCT/EP2022/060660 2021-04-23 2022-04-22 Entraînement électrique de véhicule WO2022223763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021204062.4A DE102021204062A1 (de) 2021-04-23 2021-04-23 Elektrischer Antrieb für ein Fahrzeug
DE102021204062.4 2021-04-23

Publications (1)

Publication Number Publication Date
WO2022223763A1 true WO2022223763A1 (fr) 2022-10-27

Family

ID=81841945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/060660 WO2022223763A1 (fr) 2021-04-23 2022-04-22 Entraînement électrique de véhicule

Country Status (2)

Country Link
DE (1) DE102021204062A1 (fr)
WO (1) WO2022223763A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040130224A1 (en) * 2002-11-28 2004-07-08 Seiichi Mogi Motor drive unit
DE102011080236A1 (de) * 2011-08-02 2013-02-07 Zf Friedrichshafen Ag Antriebsvorrichtung für ein einzelnes Rad eines Kraftfahrzeugs
DE102016209409A1 (de) 2016-05-31 2017-11-30 Volkswagen Aktiengesellschaft Antriebseinheit für ein Kraftfahrzeug
EP3527857A1 (fr) * 2016-10-14 2019-08-21 NTN Corporation Dipositif d'entraînement de moteur-roue
US20200292050A1 (en) * 2016-04-18 2020-09-17 Schaeffler Technologies AG & Co. KG Method for assembling a drive unit
WO2020225582A1 (fr) * 2019-05-07 2020-11-12 日産自動車株式会社 Machine dynamoélectrique
DE102019127242A1 (de) * 2019-10-10 2021-04-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Getriebe sowie Anordnung eines Getriebes und einer Elektromaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3367582B2 (ja) 1995-02-24 2003-01-14 本田技研工業株式会社 車両の動力伝達装置
DE102010034130B4 (de) 2010-08-12 2020-11-12 Volkswagen Ag Antriebsstrang eines Kraftfahrzeuges
US11137060B2 (en) 2017-06-30 2021-10-05 Tesla, Inc. Electric drive unit cooling and lubrication system with bearing shims and rotor shaft channel
DE102018104685A1 (de) 2018-03-01 2019-09-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Antriebsvorrichtung mit einem Elektromotor und einem Getriebe
DE102018118069A1 (de) 2018-07-26 2020-01-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Antriebsvorrichtung mit einem Elektromotor und einem Getriebe
BE1027046B1 (nl) 2019-02-12 2020-09-10 Punch Powertrain Nv Parkeerremmechanisme

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040130224A1 (en) * 2002-11-28 2004-07-08 Seiichi Mogi Motor drive unit
DE102011080236A1 (de) * 2011-08-02 2013-02-07 Zf Friedrichshafen Ag Antriebsvorrichtung für ein einzelnes Rad eines Kraftfahrzeugs
US20200292050A1 (en) * 2016-04-18 2020-09-17 Schaeffler Technologies AG & Co. KG Method for assembling a drive unit
DE102016209409A1 (de) 2016-05-31 2017-11-30 Volkswagen Aktiengesellschaft Antriebseinheit für ein Kraftfahrzeug
EP3527857A1 (fr) * 2016-10-14 2019-08-21 NTN Corporation Dipositif d'entraînement de moteur-roue
WO2020225582A1 (fr) * 2019-05-07 2020-11-12 日産自動車株式会社 Machine dynamoélectrique
DE102019127242A1 (de) * 2019-10-10 2021-04-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Getriebe sowie Anordnung eines Getriebes und einer Elektromaschine

Also Published As

Publication number Publication date
DE102021204062A1 (de) 2022-10-27

Similar Documents

Publication Publication Date Title
DE102019127242B4 (de) Anordnung eines Getriebes und einer Elektromaschine
EP2737612B1 (fr) Ensemble d'entraînement adjacent à une roue pour véhicule à moteur
EP1961101A1 (fr) Systeme de montage pour moteur electrique
DE102013213708A1 (de) Schneckengetriebe für eine Lenkhilfevorrichtung eines Kraftfahrzeuges mit Spielausgleich
EP2683941B1 (fr) Transmission planétaire pour éolienne
DE102018208154B3 (de) Lagerung für ein Hybridmodul
WO2020239549A1 (fr) Entraînement électrique pour un véhicule, dans un carter
DE102014223505A1 (de) Welle-Nabe-Verbindung eines Doppelzahnrades auf einer Getriebewelle
DE102019125397A1 (de) Getriebe sowie Kraftfahrzeug mit Getriebe
DE102007062363A1 (de) Schaltgetriebe
DE102019121079B3 (de) Kompakte Getriebeanordnung mit Stufenplanetensatz und Stirnraddifferential
DE102015223914A1 (de) Umlaufrädergetriebe für eine Kraftfahrzeugantriebseinheit
DE102017123586A1 (de) Elektrofahrzeug
DE102010038597A1 (de) Zentrierung eines Planetengetriebes
WO2022223763A1 (fr) Entraînement électrique de véhicule
DE102015223915B4 (de) Lageranordnung für einen Stufenplaneten, sowie hiermit ausgestattetes Umlaufrädergetriebe für eine Kraftfahrzeugantriebseinheit
DE102017129588A1 (de) Stufenplanetenrad für ein schrägverzahntes Planetengetriebe
WO2021209176A1 (fr) Générateur de force de freinage pour un système de freinage, et dispositif d'actionnement pour un système de freinage
WO2017108967A1 (fr) Machine de travail électrique
DE102020128933A1 (de) Verfahren zur Montage einer Antriebseinheit
DE102020204428A1 (de) Antriebstrang für ein Fahrzeug
DE102018009398A1 (de) Antriebseinrichtung für ein Kraftfahrzeug mit einer Antriebseinheit
DE102018218374A1 (de) Getriebe
DE102018204637A1 (de) Rotor einer elektrischen Maschine in Modulbauweise
DE102022204060B3 (de) Wellengetriebeeinrichtung mit einem Selbstzentrierungsmechanismus und Zweirad umfassend die Wellengetriebeeinrichtung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22725182

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 22725182

Country of ref document: EP

Kind code of ref document: A1