WO2018028734A1 - Drive device for a motor vehicle - Google Patents

Drive device for a motor vehicle Download PDF

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Publication number
WO2018028734A1
WO2018028734A1 PCT/DE2017/100580 DE2017100580W WO2018028734A1 WO 2018028734 A1 WO2018028734 A1 WO 2018028734A1 DE 2017100580 W DE2017100580 W DE 2017100580W WO 2018028734 A1 WO2018028734 A1 WO 2018028734A1
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WO
WIPO (PCT)
Prior art keywords
stage
drive
gear
transmission device
sun
Prior art date
Application number
PCT/DE2017/100580
Other languages
German (de)
French (fr)
Inventor
Franz Kurth
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2018028734A1 publication Critical patent/WO2018028734A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • 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
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • F16H37/0813—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft
    • F16H37/082—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft and additional planetary reduction gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/73—Planetary gearings
    • 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
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • 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
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital 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
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2033—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with one engaging means
    • 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
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46—Gearings having only two central gears, connected by orbital gears
    • F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
    • F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
    • F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears

Definitions

  • the invention relates to a drive device for a motor vehicle, in particular for an electrically driven motor vehicle.
  • a transmission and differential gear with a housing with an input shaft and two coaxial with the input shaft arranged output shafts forth.
  • a translation section and a compensating section configured as a spur gear differential are provided, the translation section having two planetary stages, namely an input stage and a load stage.
  • the sun gear of the input stage is operatively connected to the input shaft, the load stage having a ring fixed to the housing and the sun gear of the load stage is effectively connected via a bridge with at least one planetary gear of the input stage.
  • At least one planetary gear of the load stage can be effectively connected via a bridge to the ring gear of the input stage.
  • the ring gear of the input stage can be effectively coupled or decoupled with the web of the load stage.
  • the coupling device has for this purpose a driving ring, a coupling ring and a coupling wheel.
  • the object of the present invention is to further develop a drive device for a motor vehicle.
  • Two intermeshing or meshing gears are provided for transmitting torque and rotational speed from one gear to the other gear.
  • a “gear” for example, a sun, a ring gear and a planetary or Ménplanetenrad a planetary gear set to understand.
  • switching element is to be understood as meaning a device which has at least one opened and one closed state, and in the opened state the switching element does not transmit any torque
  • Switching element only in an at least partially closed state, a torque between two elements cooperating with the switching element.
  • the switching element is designed as a coupling and has at least two switching positions.
  • the switching element can be designed both as a load switching element, in particular as a friction clutch, as well as a form-locking switching element, in particular as a dog clutch.
  • the switching element can be actuated by an actuator to effect opening or closing of the switching element.
  • the actuator may be hydraulically, electromechanically, electromagnetically or pneumatically actuated, for example.
  • the drive machine is designed as an electric machine with a stator and a rotor.
  • the prime mover is arranged coaxially with the differential stage.
  • the Drive shaft arranged coaxially to the two output shafts.
  • the drive shaft is designed as a hollow shaft, wherein one of the two output shafts extends axially through the drive shaft.
  • the differential stage is designed as a spur gear, wherein the differential stage is provided to distribute a drive power of the prime mover to the two output shafts.
  • the differential stage is operatively connected to the two output shafts.
  • the two output shafts are arranged on a common drive axle.
  • the differential stage has a first and a second planetary gear set, wherein the planetary gears of the first planetary gear set mesh with a toothing on the first output shaft, further wherein the planetary gears of the second planetary gear set mesh with a toothing on the second output shaft, and wherein the planetary gears both planetary gear sets are meshed with each other in pairs.
  • FIG. 1 shows a simplified schematic representation for illustrating the
  • FIG. 2 shows a simplified schematic representation for illustrating the
  • a drive device for a motor vehicle (not shown here) has an engine 1 and a transmission device 3.
  • the drive machine 1 is designed as an electric machine and has a stator 13 and a rotor 14. Furthermore, the transmission device 3 is flanged to the prime mover 1.
  • a drive power of the drive machine 1 is introduced into the transmission device 3 via a drive shaft 2, which is arranged between the drive machine 1 and the transmission device 3.
  • the gears Device 3 comprises an input stage 4 and a differential stage 6.
  • the differential stage 6 is designed as a spur gear differential and is provided to distribute a drive power of the engine 1 to a first and second output shaft 15a, 15b.
  • the drive shaft 2 is arranged coaxially with the two output shafts 15a, 15b. Furthermore, the prime mover 1 is arranged coaxially with the differential stage 6.
  • the input stage 4 has a stepped planetary set 1 1 with a plurality of stepped planet wheels 5, wherein only a stepped planetary gear 5 is shown due to the sectional view.
  • the respective devisnplanetenrad 5 has a first and a second stage wheel 1 1 a, 1 1 b.
  • the two stage wheels 1 1 a, 1 1 b of each stage planetary gear 5 are rotatably connected.
  • the stepped planet gears 5 of the respective stepped planetary set 1 1 are rotatably arranged on a planet carrier 8, wherein the planet carrier 8 is operatively connected to the differential stage 6.
  • the first stage wheel 1 1 a of the respective stepped planetary set 1 1 is in meshing engagement with a sun 9 and the second stepwheel 1 1 b of the respective stepped planetary set 1 1 is in meshing engagement with a ring gear 10.
  • the first stage wheel 1 1 a of the respective stepped planetary set 1 1 meshes with the sun 9 and the second stage wheel 1 1 b of the respective stepped planetary set 1 1 meshes with the ring gear 10th
  • the drive shaft 2 is rotatably connected to the first sun 9 and the ring gear 10 via a switching element 12a with a housing 7 of the transmission device 3 coupled.
  • the switching element 12a is provided as a shut-off clutch and enables an advantageous power shut-off in the transmission device 3 on the ring gear 10.
  • the ring gear 10 is rotatably connected to a housing 7 of the transmission device 3 and the drive shaft 2 via a switching element 12b with the first sun 9 coupled.
  • the switching element 12b is provided as Abschaltkupp- ment and allows an advantageous power cut in the transmission device 3 at a transmission input.

Abstract

The invention relates to a drive device for a motor vehicle, comprising a drive machine (1) which is operatively connected to a transmission device (3) via a drive shaft (2), wherein the transmission device (3) has an input stage (4) and a differential stage (6), wherein the input stage (4) comprises a multi-step planetary set (11) having a plurality of multi-step planetary gears (5), wherein each multi-step planetary gear (5) has a first and a second multi-step gear (11a, 11b) which are connected to one another fixedly so as to rotate together, wherein the multi-step planetary gears (5) of the multi-step planetary set (11) are arranged rotatably on a planetary carrier (8), wherein the first multi-step gear (11a) of the multi-step planetary gears (5) is in tooth engagement with a sun (9), and the second multi-step gear (11b) of the multi-step planetary gears (5) is in tooth engagement with an internal gear (10), and wherein the planetary carrier (8) is operatively connected to the differential stage (6), wherein either the drive shaft (2) is connected fixedly to the first sun (9) so as to rotate with it and the internal gear (10) can be coupled to a housing (7) of the transmission device (3) via a shifting element (12a), or the drive shaft (2) can be coupled via a shifting element (12b) to the first sun (9) and the internal gear (10) is connected fixedly to the housing (7) of the transmission device (3) so as to rotate with it.

Description

Antriebsvorrichtung für ein Kraftfahrzeug  Drive device for a motor vehicle
Die Erfindung betrifft eine Antriebsvorrichtung für ein Kraftfahrzeug, insbesondere für ein elektrisch angetriebenes Kraftfahrzeug. The invention relates to a drive device for a motor vehicle, in particular for an electrically driven motor vehicle.
Aus der DE 10 2012 01 1 686 A1 geht ein Übersetzungs- und Ausgleichsgetriebe mit einem Gehäuse, mit einer Eingangswelle und zwei koaxial zu der Eingangswelle angeordneten Ausgangswellen hervor. Dabei sind ein Übersetzungsabschnitt und ein als Stirnraddifferential ausgebildeter Ausgleichsabschnitt vorgesehen, wobei der Überset- zungsabschnitt zwei Planetenstufen aufweist, nämlich eine Eingangsstufe und eine Laststufe. Das Sonnenrad der Eingangsstufe ist mit der Eingangswelle wirksam verbunden, wobei die Laststufe ein gehäusefestes Hohlrad aufweist und das Sonnenrad der Laststufe über einen Steg mit mindestens einem Planetenrad der Eingangsstufe wirksam verbunden ist. Mindestens ein Planetenrad der Laststufe ist über einen Steg mit dem Hohlrad der Eingangsstufe wirksam verbindbar. Über eine entsprechend vorgesehene und/oder angeordnete Kopplungsvorrichtung ist das Hohlrad der Eingangsstufe wirksam mit dem Steg der Laststufe koppelbar bzw. entkoppelbar. Die Kopplungsvorrichtung weist dazu einen Mitnehmerring, einen Koppelring und ein Koppelrad auf. From DE 10 2012 01 1 686 A1, a transmission and differential gear with a housing, with an input shaft and two coaxial with the input shaft arranged output shafts forth. In this case, a translation section and a compensating section configured as a spur gear differential are provided, the translation section having two planetary stages, namely an input stage and a load stage. The sun gear of the input stage is operatively connected to the input shaft, the load stage having a ring fixed to the housing and the sun gear of the load stage is effectively connected via a bridge with at least one planetary gear of the input stage. At least one planetary gear of the load stage can be effectively connected via a bridge to the ring gear of the input stage. Via a correspondingly provided and / or arranged coupling device, the ring gear of the input stage can be effectively coupled or decoupled with the web of the load stage. The coupling device has for this purpose a driving ring, a coupling ring and a coupling wheel.
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Antriebsvorrichtung für ein Kraftfahrzeug weiterzuentwickeln. The object of the present invention is to further develop a drive device for a motor vehicle.
Die erfindungsgemäße Antriebsvorrichtung für ein Kraftfahrzeug umfasst eine An- triebsmaschine, die über eine Antriebswelle mit einer Getriebevorrichtung wirkverbunden ist, wobei die Getriebevorrichtung eine Eingangsstufe und eine Differentialstufe aufweist, wobei die Eingangsstufe einen Stufenplanetensatz mit mehreren Stufenpla- netenräder umfasst, wobei jedes Stufenplanetenrad ein erstes und ein zweites drehfest miteinander verbundenes Stufenrad aufweist, wobei die Stufenplanetenräder des Stufenplanetensatz drehbar an einem Planetenträger angeordnet sind, wobei das erste Stufenrad der Stufenplanetenräder mit einer Sonne im Zahneingriff steht und das zweite Stufenrad der Stufenplanetenräder mit einem Hohlrad im Zahneingriff steht, und wobei der Planetenträger mit der Differentialstufe wirkverbunden ist, wobei ent- weder die Antriebswelle drehfest mit der ersten Sonne verbunden ist und das Hohlrad über ein Schaltelement mit einem Gehäuse der Getriebevorrichtung koppelbar ist oder die Antriebswelle über ein Schaltelement mit der ersten Sonne koppelbar ist und das Hohlrad drehfest mit dem Gehäuse der Getriebevorrichtung verbunden ist. Mithin ist das Schaltelement an einem der beiden Zentralräder der Eingangsstufe der Getriebevorrichtung, nämlich entweder am Hohlrad oder an der Sonne angeordnet. The drive device according to the invention for a motor vehicle comprises a drive machine which is operatively connected to a transmission device via a drive shaft, wherein the transmission device has an input stage and a differential stage, wherein the input stage comprises a step planetary set having a plurality of stepping planetary gears, wherein each step planetary gear comprises a first and a second rotatably connected to each other stepped wheel, wherein the stepped planetary gears of the stepped planetary gear set are rotatably mounted on a planet carrier, wherein the first stage wheel of the stepped planetary gears meshing with a sun and the second step wheel of the stepped planet gears meshing with a ring gear, and wherein the planet carrier with the differential stage is operatively connected, whereby neither the drive shaft rotatably connected to the first sun and the ring gear is coupled via a switching element with a housing of the transmission device or the drive shaft via a switching element with the first sun is coupled and the ring gear rotatably connected to the housing of the transmission device. Thus, the switching element is arranged on one of the two central gears of the input stage of the transmission device, namely either on the ring gear or on the sun.
Unter dem Begriff„wirkverbunden" ist zu verstehen, dass zwei Elemente direkt miteinander verbunden sein können, oder sich zwischen zwei Elemente noch weitere Ele- mente befinden, beispielsweise ein oder mehrere Zahnräder. The term "operatively connected" is to be understood that two elements can be directly connected to each other, or between two elements are still other elements, for example, one or more gears.
Zwei miteinander kämmende oder im Zahneingriff stehende Zahnräder sind zur Übertragung eines Drehmoments und einer Drehzahl von dem einen Zahnrad auf das andere Zahnrad vorgesehen. Unter einem„Zahnrad" ist beispielsweise eine Sonne, ein Hohlrad sowie ein Planetenrad bzw. Stufenplanetenrad eines Planetensatzes zu verstehen. Two intermeshing or meshing gears are provided for transmitting torque and rotational speed from one gear to the other gear. By a "gear", for example, a sun, a ring gear and a planetary or Stufenplanetenrad a planetary gear set to understand.
Des Weiteren ist unter dem Begriff„Schaltelement" eine Vorrichtung zu verstehen, die zumindest einen geöffneten und einen geschlossenen Zustand aufweist. Im geöffne- ten Zustand überträgt das Schaltelement kein Drehmoment. Somit überträgt dasFurthermore, the term "switching element" is to be understood as meaning a device which has at least one opened and one closed state, and in the opened state the switching element does not transmit any torque
Schaltelement nur in einem zumindest teilweise geschlossenen Zustand ein Drehmoment zwischen zwei mit dem Schaltelement zusammenwirkenden Elementen. Switching element only in an at least partially closed state, a torque between two elements cooperating with the switching element.
Vorzugsweise ist das Schaltelement als Kupplung ausgebildet und weist mindestens zwei Schaltstellungen auf. Das Schaltelement kann sowohl als Lastschaltelement, insbesondere als Reibkupplung, als auch als formschlüssiges Schaltelement, insbesondere als Klauenkupplung ausgebildet sein. Insbesondere kann das Schaltelement von einem Aktuator betätigt werden, um ein Öffnen oder Schließen des Schaltelements zu bewirken. Der Aktuator kann hydraulisch, elektromechanisch, elektromagne- tisch oder beispielsweise auch pneumatisch betätigbar ausgeführt sein. Preferably, the switching element is designed as a coupling and has at least two switching positions. The switching element can be designed both as a load switching element, in particular as a friction clutch, as well as a form-locking switching element, in particular as a dog clutch. In particular, the switching element can be actuated by an actuator to effect opening or closing of the switching element. The actuator may be hydraulically, electromechanically, electromagnetically or pneumatically actuated, for example.
Die Erfindung schließt die technische Lehre ein, dass die Antriebsmaschine als elektrische Maschine mit einem Stator und einen Rotor ausgebildet ist. Insbesondere ist die Antriebsmaschine koaxial zur Differentialstufe angeordnet. Vorzugsweise ist die Antriebswelle koaxial zu den beiden Abtriebswellen angeordnet. Insbesondere ist die Antriebswelle als Hohlwelle ausgebildet, wobei eine der beiden Abtriebswellen axial durch die Antriebswelle verläuft. Bevorzugt ist die Differentialstufe als Stirnraddifferential ausgebildet, wobei die Differentialstufe dazu vorgesehen ist, eine Antriebsleistung der Antriebsmaschine auf die beiden Abtriebswellen zu verteilen. Mit anderen Worten ist die Differentialstufe mit den beiden Abtriebswellen wirkverbunden. Insbesondere sind die beiden Abtriebswellen auf einer gemeinsamen Antriebsachse angeordnet. Die Differentialstufe weist einen ersten und einen zweiten Planetensatz auf, wobei die Planetenräder des ersten Planetensatzes mit einer Verzahnung an der ersten Abtriebswelle im Zahneingriff stehen, wobei ferner die Planetenräder des zweiten Planetensatzes mit einer Verzahnung an der zweiten Abtriebswelle im Zahneingriff stehen, und wobei die Planetenräder beider Planetensätze paarweise miteinander im Zahneingriff stehen. The invention includes the technical teaching that the drive machine is designed as an electric machine with a stator and a rotor. In particular, the prime mover is arranged coaxially with the differential stage. Preferably, the Drive shaft arranged coaxially to the two output shafts. In particular, the drive shaft is designed as a hollow shaft, wherein one of the two output shafts extends axially through the drive shaft. Preferably, the differential stage is designed as a spur gear, wherein the differential stage is provided to distribute a drive power of the prime mover to the two output shafts. In other words, the differential stage is operatively connected to the two output shafts. In particular, the two output shafts are arranged on a common drive axle. The differential stage has a first and a second planetary gear set, wherein the planetary gears of the first planetary gear set mesh with a toothing on the first output shaft, further wherein the planetary gears of the second planetary gear set mesh with a toothing on the second output shaft, and wherein the planetary gears both planetary gear sets are meshed with each other in pairs.
Weitere die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung zwei bevorzugter Ausführungsbeispiele der Erfindung anhand der beiden Figuren näher dargestellt. Hierbei zeigt Figur 1 eine vereinfachte schematische Darstellung zur Veranschaulichung des Further measures improving the invention will be described in more detail below together with the description of two preferred embodiments of the invention with reference to the two figures. FIG. 1 shows a simplified schematic representation for illustrating the
Aufbaus einer erfindungsgemäßen Antriebsvorrichtung gemäß einem ersten Ausführungsbeispiel, und  Structure of a drive device according to the invention according to a first embodiment, and
Figur 2 eine vereinfachte schematische Darstellung zur Veranschaulichung des FIG. 2 shows a simplified schematic representation for illustrating the
Aufbaus einer erfindungsgemäßen Antriebsvorrichtung gemäß einem zweiten Ausführungsbeispiel.  Structure of a drive device according to the invention according to a second embodiment.
Gemäß den Figuren 1 und 2 weist eine erfindungsgemäße Antriebsvorrichtung für ein - hier nicht dargestelltes - Kraftfahrzeug eine Antriebsmaschine 1 und eine Getriebevorrichtung 3 auf. Die Antriebsmaschine 1 ist als elektrische Maschine ausgebildet und weist einen Stator 13 sowie einen Rotor 14 auf. Ferner ist die Getriebevorrichtung 3 an die Antriebsmaschine 1 angeflanscht. Eine Antriebsleistung der Antriebsmaschine 1 wird über eine Antriebswelle 2, die zwischen der Antriebsmaschine 1 und der Getriebevorrichtung 3 angeordnet ist, in die Getriebevorrichtung 3 eingeleitet. Die Getrie- bevorrichtung 3 umfasst eine Eingangsstufe 4 und eine Differentialstufe 6. Die Differentialstufe 6 ist als Stirnraddifferential ausgebildet und dazu vorgesehen, eine Antriebsleistung der Antriebsmaschine 1 auf eine erste und zweite Abtriebswelle 15a, 15b zu verteilen. According to FIGS. 1 and 2, a drive device according to the invention for a motor vehicle (not shown here) has an engine 1 and a transmission device 3. The drive machine 1 is designed as an electric machine and has a stator 13 and a rotor 14. Furthermore, the transmission device 3 is flanged to the prime mover 1. A drive power of the drive machine 1 is introduced into the transmission device 3 via a drive shaft 2, which is arranged between the drive machine 1 and the transmission device 3. The gears Device 3 comprises an input stage 4 and a differential stage 6. The differential stage 6 is designed as a spur gear differential and is provided to distribute a drive power of the engine 1 to a first and second output shaft 15a, 15b.
Die Antriebswelle 2 ist koaxial zu den beiden Abtriebswellen 15a, 15b angeordnet. Ferner ist die Antriebsmaschine 1 koaxial zur Differentialstufe 6 angeordnet. Die Eingangsstufe 4 weist einen Stufenplanetensatz 1 1 mit mehreren Stufenplanetenräder 5, wobei aufgrund der Schnittdarstellung nur ein Stufenplanetenrad 5 dargestellt ist. Das jeweilige Stufenplanetenrad 5 weist ein erstes und ein zweites Stufenrad 1 1 a, 1 1 b auf. Die beiden Stufenräder 1 1 a, 1 1 b des jeweiligen Stufenplanetenrads 5 sind drehfest miteinander verbunden. Ferner sind die Stufenplanetenräder 5 des jeweiligen Stufenplanetensatzes 1 1 drehbar an einem Planetenträger 8 angeordnet, wobei der Planetenträger 8 mit der Differentialstufe 6 wirkverbunden ist. Das erste Stufenrad 1 1 a des jeweiligen Stufenplanetensatzes 1 1 steht mit einer Sonne 9 im Zahneingriff und das zweite Stufenrad 1 1 b des jeweiligen Stufenplanetensatzes 1 1 steht mit einem Hohlrad 10 im Zahneingriff. Mithin kämmt das erste Stufenrad 1 1 a des jeweiligen Stufenplanetensatzes 1 1 mit der Sonne 9 und das zweite Stufenrad 1 1 b des jeweiligen Stufenplanetensatzes 1 1 kämmt mit dem Hohlrad 10. The drive shaft 2 is arranged coaxially with the two output shafts 15a, 15b. Furthermore, the prime mover 1 is arranged coaxially with the differential stage 6. The input stage 4 has a stepped planetary set 1 1 with a plurality of stepped planet wheels 5, wherein only a stepped planetary gear 5 is shown due to the sectional view. The respective Stufenplanetenrad 5 has a first and a second stage wheel 1 1 a, 1 1 b. The two stage wheels 1 1 a, 1 1 b of each stage planetary gear 5 are rotatably connected. Furthermore, the stepped planet gears 5 of the respective stepped planetary set 1 1 are rotatably arranged on a planet carrier 8, wherein the planet carrier 8 is operatively connected to the differential stage 6. The first stage wheel 1 1 a of the respective stepped planetary set 1 1 is in meshing engagement with a sun 9 and the second stepwheel 1 1 b of the respective stepped planetary set 1 1 is in meshing engagement with a ring gear 10. Thus, the first stage wheel 1 1 a of the respective stepped planetary set 1 1 meshes with the sun 9 and the second stage wheel 1 1 b of the respective stepped planetary set 1 1 meshes with the ring gear 10th
Nach Figur 1 ist die Antriebswelle 2 drehfest mit der ersten Sonne 9 verbunden und das Hohlrad 10 über ein Schaltelement 12a mit einem Gehäuse 7 der Getriebevorrichtung 3 koppelbar. Mit anderen Worten ist das Schaltelement 12a als Abschaltkupplung vorgesehen und ermöglicht eine vorteilhafte Leistungsabschaltung in der Getriebevor- richtung 3 am Hohlrad 10. According to Figure 1, the drive shaft 2 is rotatably connected to the first sun 9 and the ring gear 10 via a switching element 12a with a housing 7 of the transmission device 3 coupled. In other words, the switching element 12a is provided as a shut-off clutch and enables an advantageous power shut-off in the transmission device 3 on the ring gear 10.
Nach Figur 2 ist das Hohlrad 10 drehfest mit einem Gehäuse 7 der Getriebevorrichtung 3 verbunden und die Antriebswelle 2 über ein Schaltelement 12b mit der ersten Sonne 9 koppelbar. Mit anderen Worten ist das Schaltelement 12b als Abschaltkupp- lung vorgesehen und ermöglicht eine vorteilhafte Leistungsabschaltung in der Getriebevorrichtung 3 an einem Getriebeeingang. Durch die Leistungsabschaltung mittels des jeweiligen Schaltelements 12a, 12b wird somit keine Antnebsleistung von der Antnebsmaschine 1 an die beiden Abtnebswellen 15a, 15b übertragen. According to Figure 2, the ring gear 10 is rotatably connected to a housing 7 of the transmission device 3 and the drive shaft 2 via a switching element 12b with the first sun 9 coupled. In other words, the switching element 12b is provided as Abschaltkupp- ment and allows an advantageous power cut in the transmission device 3 at a transmission input. By the power shutdown by means of the respective switching element 12a, 12b thus no Antnebsleistung is transmitted from the Antnebsmaschine 1 to the two Abtnebswellen 15a, 15b.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
Antriebsmaschine prime mover
Antriebswelle  drive shaft
Getriebevorrichtung  transmission device
Eingangsstufe  doorstep
Stufenplanetenrad  Stufenplanetenrad
Differentialstufe  differential stage
Gehäuse  casing
Planetenträger  planet carrier
Sonne  Sun
Hohlrad  ring gear
Stufenplanetensatz Stepped planet set
a, 1 1 b Stufenrada, 1 1 b step wheel
a, 12b Schaltelement a, 12b switching element
Stator  stator
Rotor rotor
a, 15b Abtriebswelle a, 15b output shaft

Claims

Patentansprüche claims
1 . Antriebsvorrichtung für ein Kraftfahrzeug, umfassend eine Antriebsmaschine (1 ), die über eine Antriebswelle (2) mit einer Getriebevorrichtung (3) wirkverbunden ist, wobei die Getriebevorrichtung (3) eine Eingangsstufe (4) und eine Differentialstufe (6) aufweist, wobei die Eingangsstufe (4) einen Stufenplanetensatz (1 1 ) mit mehreren Stufenplanetenräder (5) umfasst, wobei jedes Stufenplanetenrad (5) ein erstes und ein zweites drehfest miteinander verbundenes Stufenrad (1 1 a, 1 1 b) aufweist, wobei die Stufenplanetenräder (5) des Stufenplanetensatz (1 1 ) drehbar an einem Planetenträger (8) angeordnet sind, wobei das erste Stufenrad (1 1 a) der Stufenplanetenräder (5) mit einer Sonne (9) im Zahneingriff steht und das zweite Stufenrad (1 1 b) der Stufenplanetenräder (5) mit einem Hohlrad (10) im Zahneingriff steht, und wobei der Planetenträger (8) mit der Differentialstufe (6) wirkverbunden ist, wobei die Antriebswelle (2) drehfest mit der ersten Sonne (9) verbunden ist, 1 . A drive device for a motor vehicle, comprising an engine (1) operatively connected to a transmission device (3) via a drive shaft (2), the transmission device (3) having an input stage (4) and a differential stage (6), the input stage (4) comprises a stepped planetary set (1 1) with a plurality of stepped planetary gears (5), each stepped planetary gear (5) having a first and a second non - rotatably connected step wheel (1 1 a, 1 1 b), wherein the stepped planet gears (5) of Step planetary set (1 1) rotatably mounted on a planet carrier (8) are arranged, wherein the first stage wheel (1 1 a) of the stepped planet wheels (5) with a sun (9) meshing and the second stage wheel (1 1 b) of the stepped planetary gears ( 5) is in meshing engagement with a ring gear (10), and wherein the planet carrier (8) is operatively connected to the differential stage (6), wherein the drive shaft (2) is non-rotatably connected to the first sun (9),
dadurch gekennzeichnet, dass das Hohlrad (10) über ein Schaltelement (12a) mit einem Gehäuse (7) der Getriebevorrichtung (3) koppelbar ist. characterized in that the ring gear (10) via a switching element (12a) with a housing (7) of the transmission device (3) can be coupled.
2. Antriebsvorrichtung nach Anspruch 1 , 2. Drive device according to claim 1,
dadurch gekennzeichnet, dass die Antriebsmaschine (1 ) als elektrische Maschine mit einem Stator (13) und einen Rotor (14) ausgebildet ist. characterized in that the drive machine (1) as an electric machine with a stator (13) and a rotor (14) is formed.
3. Antriebsvorrichtung nach einem der vorhergehenden Ansprüche, 3. Drive device according to one of the preceding claims,
dadurch gekennzeichnet, dass die Differentialstufe (6) als Stirnraddifferential aus- gebildet ist, wobei die Differentialstufe (6) dazu vorgesehen ist, eine Antriebsleistung der Antriebsmaschine (1 ) auf eine erste und zweite Abtriebswelle (15a, 15b) zu verteilen. characterized in that the differential stage (6) is formed as Stirnraddifferential, wherein the differential stage (6) is provided to distribute a drive power of the drive machine (1) on a first and second output shaft (15a, 15b).
4. Antriebsvorrichtung nach einem der vorhergehenden Ansprüche, 4. Drive device according to one of the preceding claims,
dadurch gekennzeichnet, dass die Antriebswelle (2) koaxial zu den beiden Abtriebswellen (15a, 15b) angeordnet ist. characterized in that the drive shaft (2) coaxial with the two output shafts (15a, 15b) is arranged.
5. Antnebsvomchtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schaltelement (12) als Kupplung ausgebildet ist und mindestens zwei Schaltstellungen aufweist. 5. Antnebsvomchtung according to any one of the preceding claims, characterized in that the switching element (12) is designed as a coupling and has at least two switching positions.
PCT/DE2017/100580 2016-08-11 2017-07-13 Drive device for a motor vehicle WO2018028734A1 (en)

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DE102016215010.3A DE102016215010A1 (en) 2016-08-11 2016-08-11 Drive device for a motor vehicle

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