DE102010031747B4 - drive unit - Google Patents
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- DE102010031747B4 DE102010031747B4 DE102010031747.0A DE102010031747A DE102010031747B4 DE 102010031747 B4 DE102010031747 B4 DE 102010031747B4 DE 102010031747 A DE102010031747 A DE 102010031747A DE 102010031747 B4 DE102010031747 B4 DE 102010031747B4
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- planetary
- drive
- gear
- differential
- clutch
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- 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
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
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- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- 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
- B60K17/26—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, of type of freewheel device
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- 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
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- 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
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- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4816—Electric machine connected or connectable to gearbox internal shaft
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- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- 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
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- 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
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- 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
- F16H2200/201—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with three sets of orbital gears
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- 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
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- 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
- F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Retarders (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Antriebseinheit (1) mit einem Elektromotor (2), mit einem Differenzial (3) für zwei Abtriebswellen (4, 5) und mit einem im Leistungsfluss zwischen dem Elektromotor (2) und dem Differenzial (3) angeordneten ersten Planetentrieb (6), wobei der Leistungsfluss zwischen dem Elektromotor (2) und dem Differenzial (3) mittels wenigstens einer ersten Kupplung (18) wahlweise über eine erste getriebliche Verbindung oder eine zweite getriebliche Verbindung schaltbar ist, und wobei in der ersten getrieblichen Verbindung ein zweiter Planetentrieb (20) im Leistungsfluss zwischen dem Elektromotor (2) und einem dritten Planetentrieb (30) angeordnet ist, wobei der zweite Planetentrieb (20) mit dem dritten Planetentrieb (30) wirkverbunden und der dritte Planetentrieb (30) über wenigstens eine zweite Kupplung (21) mit einer Summenwelle (15) des Differenzials (3) gekoppelt ist, dadurch gekennzeichnet, dass die zweite Kupplung (21) eine Freilaufkupplung ist.Drive unit (1) with an electric motor (2), with a differential (3) for two output shafts (4, 5) and with a first planetary drive (6) arranged in the power flow between the electric motor (2) and the differential (3), wherein the power flow between the electric motor (2) and the differential (3) can be switched by means of at least one first clutch (18) optionally via a first gear connection or a second gear connection, and a second planetary drive (20) in the first gear connection Power flow is arranged between the electric motor (2) and a third planetary drive (30), the second planetary drive (20) being operatively connected to the third planetary drive (30) and the third planetary drive (30) via at least one second clutch (21) with a sum shaft (15) of the differential (3) is coupled, characterized in that the second clutch (21) is an overrunning clutch.
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Antriebseinheit mit wenigstens einem Elektromotor, mit einem Differenzial für zwei Abtriebswellen und mit einem im Leistungsfluss zwischen dem Elektromotor und dem Differenzial angeordneten ersten Planetentrieb.The invention relates to a drive unit with at least one electric motor, with a differential for two output shafts and with a first planetary drive arranged in the power flow between the electric motor and the differential.
Hintergrund der ErfindungBackground of the invention
Das Differenzial ist ein klassisches Kegelraddifferenzial, Der Differenzialkorb ist die Summenwelle des Differenzials, an der die höchsten Drehmomente anliegen, die im Differenzial auf zwei als Abtriebswellen bezeichnete Differenzwellen verteilt werden. Alternativ werden über die Abtriebswellen ins Differenzial eingebrachte Drehmomente an der Summenwelle wieder zusammengeführt. Der Differenzialkorb ist relativ zu der Rotorwelle um die Antriebsrotationsachse und konzentrisch zu den Rotationsachsen der Abtriebswellen drehbar und dazu relativ zu dem Gehäuse ortsfest in dem Gehäuse gelagert. In dem Differenzialkorb sind Ausgleichskegelräder drehbar gelagert und stehen mit Achswellenrädern im Eingriff. Die Achswellenräder sind drehmomentfest mit den Abtriebswellen verbunden.The differential is a classic bevel gear differential. The differential cage is the sum shaft of the differential, at which the highest torques are applied, which are distributed in the differential to two differential shafts called output shafts. Alternatively, torques introduced into the differential via the output shafts are brought together again on the sum shaft. The differential cage is rotatable relative to the rotor shaft about the drive rotation axis and concentric with the axes of rotation of the output shafts and relative to the housing mounted stationary in the housing. Compensating bevel gears are rotatably mounted in the differential cage and engage with axle-shaft gears. The axle-shaft gears are torque-resistant connected to the output shafts.
Zum Antrieb der Abtriebswellen wird das Sonnenrad mittels der Antriebswelle in Drehung um die Antriebsrotationsachse versetzt. Damit werden die mit dem Sonnenrad im Eingriff stehenden Planetenräder angetrieben. Die Planetenräder wälzen und stützen sich im Zahneingriff mit der Verzahnung des Hohlrades an dem Hohlrad ab, so dass der Planetenträger, also der Korb des Differenzials, in Bewegung versetzt wird, wobei durch das Differenzial in bekannter Weise Drehmomente bzw. Drehzahlen auf die Abtriebswellen aufgeteilt werden.To drive the output shafts, the sun gear is rotated by means of the drive shaft in rotation about the drive rotation axis. This drives the planet gears meshing with the sun gear. The planetary gears roll and are based in tooth engagement with the teeth of the ring gear on the ring gear, so that the planet carrier, so the basket of the differential, is set in motion, being divided by the differential in a known manner torques or speeds to the output shafts ,
Durch die Auslegung des Planetengetriebes, also Festlegung von Anzahl der Zähne der Elemente Sonne, Planeten und Hohlrad des Planetentriebs, kann in der beschrieben Antriebseinheit nur eine Über- bzw. Untersetzung geschaffen werden.Due to the design of the planetary gear, so setting of the number of teeth of the sun elements, planets and ring gear of the planetary gear, only one over- or reduction can be created in the drive unit described.
Unter Leistungsfluss ist die Übertragung von Drehmomenten und Drehzahlen vom Elektromotor zum Differenzial und vom Differenzial zum Elektromotor über die jeweilige geschaltetete getriebliche Verbindung mit Unter- oder Übersetzungen zu verstehen.Under power flow is the transmission of torque and speed from the electric motor to the differential and from the differential to the electric motor via the respective connected geared connection with under or translations to understand.
Beschreibung der ErfindungDescription of the invention
Die Aufgabe der Erfindung ist es, eine kompakte und kostengünstig herzustellende Antriebseinheit mit variablen Unter- bzw. Übersetzungen zu schaffen.The object of the invention is to provide a compact and inexpensive to produce drive unit with variable under or translations.
Diese Aufgabe wird gelöst durch eine Vorrichtung nach Patentanspruch 1. Weiterbildungen der Vorrichtung sind Gegenstand der Unteransprüche.This object is achieved by a device according to claim 1. Further developments of the device are the subject of the dependent claims.
Erfindungsgemäß ist die zweite Kupplung eine Freilaufkupplung.According to the invention, the second clutch is an overrunning clutch.
Eine Ausgestaltung der Erfindung sieht vor, dass in der zweiten getrieblichen Verbindung der Elektromotor und der erste Planetentrieb über die ein- und ausrückbare erste Kupplung miteinander und der erste Planetentrieb mit der Summenwelle gekoppelt ist.An embodiment of the invention provides that in the second geared connection of the electric motor and the first planetary gear via the engageable and disengageable first clutch with each other and the first planetary gear is coupled to the sum shaft.
Eine weitere Ausgestaltung der Erfindung sieht vor, dass der dritte Planetentrieb über wenigstens die zweite Kupplung mit einem Element des ersten Planetentriebs gekoppelt ist, wobei das Element mit der Summenwelle wirkverbunden ist. A further embodiment of the invention provides that the third planetary gear is coupled via at least the second clutch with an element of the first planetary gear, wherein the element is operatively connected to the sum shaft.
Das Element ist vorzugsweise ein erster Planetenträger des Planetentriebs, an dem mit einem ersten Sonnenrad im Zahneingriff stehende erste Planetenräder des ersten Planetentriebs drehbar gelagert sind.The element is preferably a first planet carrier of the planetary drive, on which first planetary gears of the first planetary drive, which mesh with a first sun gear, are rotatably mounted.
Eine weitere Ausgestaltung der Erfindung sieht vor, dass die Rotationsachsen eines erstes Sonnenrades, des ersten Planetentriebs, eines zweiten Sonnenrades des zweiten Planetentriebs, eines dritten Sonnenrades des dritten Planetentriebs, und die der Rotorwelle des Elektromotors sowie die Rotationsachse der Summenwelle parallel konzentrisch aufeinander liegen. Die vorgenannten Elemente sind also in axialer Folge koaxial aufeinander folgend angeordnet, so dass eine kompakte Antriebseinheit geschaffen ist.A further embodiment of the invention provides that the axes of rotation of a first sun gear, the first planetary gear, a second sun gear of the second planetary gear, a third sun gear of the third planetary gear, and the rotor shaft of the electric motor and the axis of rotation of the sum shaft are parallel to each other concentrically. The aforementioned elements are thus arranged coaxially successively in axial sequence, so that a compact drive unit is provided.
Die koaxiale Anordnung macht es möglich, dass der erste Planetentrieb und der zweite Planetentrieb sowie der dritte Planetentrieb ein gemeinsames Hohlrad mit einer gemeinsamen Anzahl an Zähnen für die Planetentriebe aufweist, welches mit den Planetenrädern der Planetentriebe im Zahneingriff steht. Alternativ weisen die einzelnen Planetentriebe jeder für sich ein separates Hohlrad oder zwei Planetentriebe zusammen ein Hohlrad auf, wobei die Anzahl der Zähne von Hohlrad zu Hohlrad gleich oder unterschiedlich sein kann. Die Herstellkosten sind gering. Das Getriebe kann kompakt ausgebildet werden. Die Antriebseinheit kann zum Beispiel eine Gehäusehälfte aufweisen, an der die Innenverzahnung des Hohlrades ausgebildet ist und die an eine Gehäusehälfte für den Elektromotor angeflanscht werden kann.The coaxial arrangement makes it possible for the first planetary gear and the second planetary gear and the third planetary gear to have a common ring gear with a common number of teeth for the planet gears, which meshes with the planet gears of the planet gears. Alternatively, the individual planetary gears each have a separate ring gear or two planetary gears together a ring gear, wherein the number of teeth from ring gear to ring gear may be the same or different. The manufacturing costs are low. The transmission can be made compact. The drive unit may for example have a housing half, on which the internal toothing of the ring gear is formed and which can be flanged to a housing half for the electric motor.
Eine Ausgestaltung der Erfindung sieht zugleich oder alternativ zu vorgenannter Ausgestaltung vor, dass die ersten Planetenräder des ersten Planetentriebs jeweils die gleiche Anzahl an Zähnen aufweisen wie jeweils die zweiten Planetenräder des zweiten Planetentriebs. Zugleich oder alternativ dazu ist mit einer weiteren Ausgestaltung der Erfindung vorgesehen, dass das erste Sonnenrad des ersten Planetentriebs die gleiche Anzahl an Zähnen aufweist wie jeweils das zweite Sonnenrad des zweiten Planetentriebs. Der dritte Planetentrieb weist andere Sonnen- und/oder Planetenräder auf, als die anderen beiden Planetentriebe. Der erste und der dritte Planetentrieb können demnach als vollständig identische Baugruppen ausgebildet werden. Mit einer derartigen Ausgestaltung ist die Anzahl der Bauteile der Antriebseinheit gering gehalten. Die Kosten für die Herstellung sind aufgrund doppelter Stückzahlen und einfacher Lagerhaltung niedrig.An embodiment of the invention provides at the same time or alternatively to the aforementioned embodiment that the first planetary gears of the first planetary gear each have the same number of teeth as in each case the second planetary gears of the second planetary gear. At the same time or alternatively, with a further embodiment of the invention, it is provided that the first sun gear of the first planetary drive has the same number of teeth as in each case the second sun gear of the second planetary drive. The third planetary gear has other sun and / or planet gears, as the other two planetary gears. The first and third planetary gear can therefore be designed as completely identical assemblies. With such a configuration, the number of components of the drive unit is kept low. The cost of manufacturing is low due to double the number of pieces and easy storage.
Ein Element des ersten Planetentriebs ist mit der Rotorwelle des Elektromotors verbindbar und wieder trennbar. Zwischen der Rotorwelle und dem ersten Planetentrieb ist dazu eine ein- und ausrückbare erste Kupplung angeordnet, über die eine direkte wiederholt trennbare Verbindung zwischen der Rotorwelle und beispielsweise dem Sonnenrad oder einer mit dem Sonnenrad konzentrischen Welle herstellbar ist. Eine derartige Kupplung ist eine Trockenkupplung oder eine Nasskupplung, die hydraulisch oder mechanisch ein- und ausrückbar ist. Der erste Planetentrieb ist durch eine erste Sonne, durch erste Planetenräder, das erste Hohlrad und durch den ersten Planetenträger gebildet. Die ersten Planetenräder sind um die eigene Rotationsachse drehbar mit radialem Abstand zur Rotationsachse des Sonnenrades auf Planetenbolzen gelagert. Die Planetenbolzen sind an dem ersten Planetenträger gehalten. Erstes Sonnenrad und Planetenräder stehen miteinander im Zahneingriff. Die ersten Planetenräder stehen mit dem ersten Hohlrad im Zahneingriff. Der Planetenträger ist mit der Summenwelle, vorzugsweise dem Gehäuse des Differenzials, gekoppelt.An element of the first planetary drive can be connected to the rotor shaft of the electric motor and separated again. Between the rotor shaft and the first planetary gear to a engageable and disengageable first clutch is arranged, via which a direct repeatedly separable connection between the rotor shaft and, for example, the sun gear or concentric with the sun gear shaft can be produced. Such a coupling is a dry clutch or a wet clutch, which is hydraulically or mechanically engaged and disengaged. The first planetary drive is formed by a first sun, by first planet gears, the first ring gear and by the first planet carrier. The first planetary gears are rotatably mounted about their own axis of rotation at a radial distance from the axis of rotation of the sun gear on planet pins. The planet pins are held on the first planet carrier. First sun gear and planet gears mesh with each other. The first planet gears mesh with the first ring gear. The planet carrier is coupled to the sum shaft, preferably the differential case.
Durch Ein- und Ausrücken der ersten Kupplung können mit der Antriebseinheit mindestens zwei Betriebsarten gefahren, dass heißt mindestens zwei Gänge geschaltet werden. Ein erster Gang kann durch eine permanente oder trennbare Verbindung zwischen der Rotorwelle und dem zweiten Planetentrieb und über diesen und den dritten Planetentrieb zur Summenwelle geschaltet werden. In diesem Falle wird die erste Kupplung ausgerückt und die Verbindung zwischen der Rotorwelle und dem ersten Planetentrieb getrennt.By engaging and disengaging the first clutch can be driven with the drive unit at least two modes, that is, at least two gears are switched. A first gear can be switched to the sum shaft by a permanent or separable connection between the rotor shaft and the second planetary gear and via this and the third planetary gear. In this case, the first clutch is disengaged and disconnected the connection between the rotor shaft and the first planetary gear.
Die Über- oder Untersetzung der Drehzahlen und Momente kann durch die Auslegung der Anzahl der Zähne der Elemente Sonnenrad, Planetenräder und Hohlrad des zweiten und dritten Planetentriebs vorgenommen werden. So ist vorgesehen, dass das zweite Sonnenrad mit der Rotorwelle direkt oder über eine Welle, alternativ auch über eine Kupplung, wirkverbunden ist.The transmission or reduction of the speeds and moments can be made by the design of the number of teeth of the elements sun gear, planetary gears and ring gear of the second and third planetary gear. It is thus provided that the second sun gear is operatively connected to the rotor shaft directly or via a shaft, alternatively also via a clutch.
Das zweite Sonnenrad kämmt mit zweiten Planetenrädern, die mit radialem Abstand zur Rotationsachse dem zweiten Sonnenrad bzw. der Rotorwelle drehbar an einem zweiten Planetenträger gelagert sind. Außerdem kämmen die zweiten Planetenräder mit dem zweiten Hohlrad. Der konzentrisch zur Rotationsachse des zweiten Sonnenrades angeordnete zweite Planetenträger ist entweder direkt, über eine Welle oder über eine Kupplung mit einem dritten Sonnenrad wirkverbunden.The second sun gear meshes with second planet gears, which are mounted at a radial distance from the axis of rotation of the second sun gear and the rotor shaft rotatably mounted on a second planetary carrier. In addition, the second planet gears mesh with the second ring gear. The second planet carrier arranged concentrically with the axis of rotation of the second sun gear is operatively connected either directly, via a shaft or via a clutch to a third sun gear.
Das dritte Sonnenrad kämmt mit dritten Planetenrädern des dritten Planetentriebs, die auch mit der Verzahnung des dritten Hohlrades im Zahneingriff stehen. Die dritten Planetenräder sind mit radialem Abstand zur Rotationsachse des dritten Sonnenrades an einem dritten Planetenträger gelagert. Der dritte Planetenträger ist konzentrisch zur Rotationsachse des dritten Sonnenrades angeordnet und über die zweite Kupplung, die erfindungsgemäß als Freilaufkupplung ausgebildet ist, mit dem ersten Planetenträger des ersten Planetentriebs im ersten Gang verbunden.The third sun gear meshes with third planet gears of the third planetary gear, which are also in mesh with the teeth of the third ring gear. The third planetary gears are with radial distance to the axis of rotation of the third sun gear mounted on a third planet carrier. The third planet carrier is arranged concentrically to the axis of rotation of the third sun gear and connected via the second clutch, which is designed according to the invention as an overrunning clutch, with the first planet carrier of the first planetary gear in first gear.
Ein zweiter Gang kann durch Einrücken der Kupplung über die zweite getriebliche Verbindung zwischen der Rotorwelle und dem Differenzial über den ersten Planetentrieb hergestellt werden. Die Freilaufkupplung läuft frei, so dass die drehfeste Verbindung zwischen dem dritten Planetenträger und dem ersten Planetenträger aufgehoben ist.A second gear may be made by engaging the clutch via the second geared connection between the rotor shaft and the differential via the first planetary gear. The one-way clutch runs free, so that the rotationally fixed connection between the third planet carrier and the first planet carrier is canceled.
Mit einer erfindungsgemäßen Antriebseinheit sind beispielsweise wahlweise Standübersetzungen von i = –4,5 (die Anzahl der Zähne des Hohlrads z = 129 und die des Sonnenrades z = 29) für den ersten und zweiten Planetentrieb realisierbar. Der dritte Planetentrieb weist eine Standübersetzung von i = –1,5 (z. B. Anzahl der Zähne des Hohlrades z = 129 und die des Sonnenrades z = 87) auf, wobei eine Standübersetzung das Verhältnis der Zähnezahlen des Hohlrades zu denen der Sonne bei stehendem Steg ist. Wenn diese Planetentriebe im ersten Gang miteinander gekoppelt sind, ergibt sich damit bei festen Hohlrädern eine Gesamtübersetzung von 14 durch die erste getriebliche Verbindung und im zweiten Gang eine von i = –4,5 für die zweite getriebliche Verbindung.With a drive unit according to the invention, for example, stand ratios of i = -4.5 (the number of teeth of the ring gear z = 129 and that of the sun gear z = 29) can be realized for the first and second planetary drives. The third planetary gear has a stand ratio of i = -1.5 (eg number of teeth of the ring gear z = 129 and that of the sun gear z = 87), wherein a stand ratio of the ratio of the number of teeth of the ring gear to those of the sun at standing bridge is. If these planetary gears are coupled together in first gear, this results in fixed ring gears a total ratio of 14 through the first gear connection and in second gear one of i = -4.5 for the second geared connection.
Die Freilaufkupplung ist die der Fachwelt bekannte Überholkupplung, die zwei relativ zueinander um eine gemeinsame Rotationsachse drehbar angeordnete Elemente miteinander drehmomentfest koppelt oder wieder entkoppelt, wenn sich Drehzahlen oder Drehmomente ändern.The overrunning clutch is known in the art overrunning clutch, the two rotatable relative to each other about a common axis of rotation arranged elements together torque coupled or decoupled again when changing speeds or torques.
Beschreibung der ZeichnungenDescription of the drawings
Die Erfindung ist nachfolgend mit den
In dem ersten Planetentrieb
Ein zweites Sonnenrad
Das dritte Sonnenrad
Das Differenzial
Eine erste Kupplung
Die Hohlräder
Claims (8)
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DE102010031747.0A DE102010031747B4 (en) | 2010-07-21 | 2010-07-21 | drive unit |
PCT/EP2011/057941 WO2012010340A1 (en) | 2010-07-21 | 2011-05-17 | Drive unit |
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AT512942B1 (en) | 2012-08-24 | 2013-12-15 | Avl List Gmbh | drive unit |
DE102012220970B4 (en) * | 2012-11-16 | 2017-03-02 | Schaeffler Technologies AG & Co. KG | Powertrain for a vehicle |
CN104527413A (en) * | 2015-01-06 | 2015-04-22 | 东北林业大学 | Range-increasing type electric vehicle transmission device with flywheel energy storage function |
DE102016002567B4 (en) | 2016-03-03 | 2024-10-02 | Mercedes-Benz Group AG | drive device, in particular for an electric vehicle |
DE102016003523A1 (en) | 2016-03-22 | 2017-09-28 | Daimler Ag | Drive device, in particular for an electric vehicle |
DE102016003533B4 (en) | 2016-03-22 | 2024-10-02 | Mercedes-Benz Group AG | drive device, in particular for an electric vehicle |
DE102016003575A1 (en) | 2016-03-23 | 2017-09-28 | Daimler Ag | Drive device, in particular for an electric vehicle |
DE102016004373A1 (en) | 2016-04-09 | 2017-10-12 | Daimler Ag | Drive device, in particular for an electric vehicle |
JPWO2018079842A1 (en) * | 2016-10-31 | 2019-06-24 | アイシン・エィ・ダブリュ株式会社 | Vehicle drive system |
CN107327556A (en) * | 2017-08-01 | 2017-11-07 | 南京越博动力系统股份有限公司 | A kind of two grades of planetary gears gearbox drive axle system and method |
JP6911652B2 (en) * | 2017-09-01 | 2021-07-28 | 三菱自動車工業株式会社 | Driving force adjustment device |
DE102017121627B3 (en) | 2017-09-19 | 2018-11-22 | Schaeffler Technologies AG & Co. KG | Drive unit with electric motor and Stufenplanetenthaltendem planetary gear and planet carrier related torque output |
DE102017220168B4 (en) * | 2017-11-13 | 2019-12-12 | Audi Ag | Drive device for a vehicle axle of a two-lane vehicle |
CN110667367B (en) * | 2018-07-02 | 2021-02-02 | 上海汽车集团股份有限公司 | Vehicle and power transmission system thereof |
DE102019207785A1 (en) * | 2019-05-28 | 2020-12-03 | Zf Friedrichshafen Ag | Electric drive for a vehicle |
DE102021205927A1 (en) | 2021-06-11 | 2022-12-15 | Zf Friedrichshafen Ag | Transmission for an electric drive system of a motor vehicle and electric drive system with such a transmission |
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US4430908A (en) * | 1981-09-08 | 1984-02-14 | Ford Motor Company | Split path electric vehicle powertrain |
DE19841159A1 (en) * | 1998-06-18 | 2000-01-05 | Mannesmann Sachs Ag | Drive arrangement for a motor vehicle |
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US4479404A (en) * | 1981-09-08 | 1984-10-30 | Stockton Thomas R | Concentric powertrain for electric vehicle |
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US4430908A (en) * | 1981-09-08 | 1984-02-14 | Ford Motor Company | Split path electric vehicle powertrain |
DE19841159A1 (en) * | 1998-06-18 | 2000-01-05 | Mannesmann Sachs Ag | Drive arrangement for a motor vehicle |
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