DE102010048837A1 - driving device - Google Patents
driving device Download PDFInfo
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- DE102010048837A1 DE102010048837A1 DE201010048837 DE102010048837A DE102010048837A1 DE 102010048837 A1 DE102010048837 A1 DE 102010048837A1 DE 201010048837 DE201010048837 DE 201010048837 DE 102010048837 A DE102010048837 A DE 102010048837A DE 102010048837 A1 DE102010048837 A1 DE 102010048837A1
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- rotor
- gears
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- sun
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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
- 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
- F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
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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
- 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
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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
- 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
- F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun 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
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Retarders (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Die Erfindung betrifft eine Antriebsvorrichtung mit wenigstens einem Elektromotor und mindestens einem mit einem Rotor des Elektromotors antreibbaren Planetendifferenzial, wobei das Planetendifferenzial wenigstens einen Planententräger, der mit einem Rotor des Elektromotors wirkverbunden ist, erste Planetenräder und zweite Planetenräder, die drehbar an dem Planetenträger gelagert sind, sowie ein erstes Sonnenrad und ein zweites Sonnenrad, von denen jedes jeweils mit einer Abtriebswelle des Planetendifferenzials wirkverbunden ist, aufweist, und dabei die ersten Planetenräder mit dem ersten Sonnenrad im Zahneingriff stehen und jedes der zweiten Planetenräder mit dem zweiten Sonnenrad sowie mit einem der der ersten Planetenräder im Zahneingriff stehen und wobei zumindest die Sonnenräder koaxial einer Rotationsachse des Rotors angeordnet sind.The invention relates to a drive device with at least one electric motor and at least one planetary differential that can be driven by a rotor of the electric motor, the planetary differential having at least one planet carrier which is operatively connected to a rotor of the electric motor, first planet gears and second planet gears which are rotatably mounted on the planet carrier, and a first sun gear and a second sun gear, each of which is operatively connected to an output shaft of the planetary differential, and the first planet gears are in meshing engagement with the first sun gear and each of the second planet gears with the second sun gear and with one of the first Planet gears are in meshing engagement and at least the sun gears are arranged coaxially with an axis of rotation of the rotor.
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Antriebsvorrichtung mit wenigstens einem Elektromotor und mindestens einem mit einem Rotor des Elektromotors antreibbaren Planetendifferenzial, wobei das Planetendifferenzial wenigstens einen Planententräger, der mit einem Rotor des Elektromotors wirkverbunden ist, erste Planetenräder und zweite Planetenräder, die drehbar an dem Planetenträger gelagert sind, sowie ein erstes Sonnenrad und ein zweites Sonnenrad, von denen jedes jeweils mit einer Abtriebswelle des Planetendifferenzials wirkverbunden ist, aufweist, und dabei die ersten Planetenräder mit dem ersten Sonnenrad im Zahneingriff stehen und jedes der zweiten Planetenräder mit dem zweiten Sonnenrad sowie mit einem der der ersten Planetenräder im Zahneingriff stehen und wobei zumindest die Sonnenräder koaxial einer Rotationsachse des Rotors angeordnet sind.The invention relates to a drive device having at least one electric motor and at least one planetary differential drivable with a rotor of the electric motor, wherein the planetary differential at least one planetary carrier, which is operatively connected to a rotor of the electric motor, first planetary gears and second planetary gears, which are rotatably mounted on the planet carrier, and a first sun gear and a second sun gear, each of which is operatively connected to each of an output shaft of the planetary differential, and wherein the first planetary gears mesh with the first sun gear and each of the second planetary gears with the second sun gear and one of the first Planet gears are in meshing engagement and wherein at least the sun gears are arranged coaxially to a rotational axis of the rotor.
Hintergrund der ErfindungBackground of the invention
Eine derartige Antriebseinheit ist in
Durch den Nebenantrieb können über ein Überlagerungsgetriebe zusätzlich Drehmomente in das Planetendifferenzial eingebracht und deren Verteilung auf die Differenzräder beeinflusst werden. Hauptantrieb und Nebenantrieb sind in diesem Fall Elektromotoren, die koaxial zueinander angeordnet sind. Das Überlagerungsgetriebe ist durch drei miteinander gekoppelte Planetentriebe gebildet. Derartige Antriebseinheiten sind unabhängig von anderen Antriebsquellen, z. B. unabhängig von Verbrennungsmotoren, oder zusammen mit diesen einsetzbar.By means of the auxiliary drive, torque can additionally be introduced into the planetary differential via an overlay transmission and its distribution can be influenced on the differential wheels. Main drive and PTO are electric motors in this case, which are arranged coaxially with each other. The superposition gear is formed by three coupled planetary gears. Such drive units are independent of other drive sources, eg. B. independent of internal combustion engines, or used together with these.
Beschreibung der ErfindungDescription of the invention
Die Aufgabe der Erfindung ist es, eine kompakte Baueinheit zu schaffen.The object of the invention is to provide a compact unit.
In dem Planetendifferenzial steht die Verzahnung der ersten Planetenräder mit der Verzahnung der zweiten Planetenräder im Zahneingriff. Die Anzahl der Zähne der ersten Planetenräder entspricht dabei vorzugsweise der Anzahl der Zähne der Verzahnung der zweiten Planetenräder, kann aber auch anders sein. Gleichzeitig steht die Verzahnung der Planetenräder eines der Sätze Planetenräder im Zahneingriff mit der Verzahnung von nur einem Sonnenrad, ohne dass die Verzahnung der Planetenräder dieses Satzes mit der Verzahnung des anderen Sonnenrads im Zahneingriff steht. Um mit dem anderen Satz Planetenräder und gleichzeitig mit einem der Sonnenräder im Zahneingriff stehen zu können, müssen die Planetenräder eines Satzes „länger”, d. h. axial breiter sein als die Zähne der Planetenräder des anderen Satzes und das andere Sonnenrad ohne dieses zu berühren axial übergreifen.In the planetary differential, the toothing of the first planetary gears meshes with the teeth of the second planetary gears. The number of teeth of the first planet gears preferably corresponds to the number of teeth of the teeth of the second planet gears, but may also be different. At the same time, the toothing of the planetary gears of one of the planetary gear sets is in meshing engagement with the teeth of only one sun gear, without the toothing of the planet wheels of this set meshing with the toothing of the other sun gear. In order to be able to mesh with the other set planet gears and at the same time with one of the sun gears, the planet gears of a sentence "longer", d. H. be axially wider than the teeth of the planetary gears of the other set and the other sun gear without touching this axially overlap.
Da die längeren Planetenräder zwecks Zahneingriff mit den kürzeren Planetenrädern das eine der Sonnenräder axial übergreifen müssen ohne dieses zu berühren, muss das axial übergriffene Sonnenrad eine geringere Anzahl an Zähnen, also einen geringeren . Durchmesser, aufweisen als das benachbarte Sonnenrad. Alternativ und vorzugsweise weist die Verzahnung des axial übergriffenen Sonnenrades jedoch die gleiche Anzahl an Zähnen auf wie das andere, ist jedoch mit einem kleineren Kopfkreis ausgelegt. Die gleiche Anzahl der Zähne und gleiche Durchmesser der Planetenräder beider Sätze untereinander sind in diesem Fall vorausgesetzt.Since the longer planet gears for the purpose of meshing with the shorter planetary gears must axially overlap one of the sun gears without touching it, the axially overlapped sun gear has a smaller number of teeth, so a smaller. Diameter, have as the adjacent sun gear. Alternatively and preferably, however, the toothing of the axially overlapped sun gear has the same number of teeth as the other, but is designed with a smaller tip circle. The same number of teeth and the same diameter of the planet gears of both sets are assumed in this case.
Die unterschiedlichen Kopfkreisdurchmesser der Sonnenräder können durch die der Fachwelt bekannte Profilverschiebung erreicht werden. Der Zahnkontakt der Sonnenräder mit dem größeren Kopfkreis ist dabei durch positive Profilverschiebung und entsprechend der Zahnkontakt der im Kopfkreis kleineren Sonnenräder durch negative Profiverschiebung erreichbar. Der Kopfkreis ist ein gedachter Kreis, der die Zähne einer Verzahnung mit gleich großen Zähnen außen umgibt. Der Kopfkreisdurchmesser ist dementsprechend der Außendurchmesser einer solchen Stirnverzahnung. Er bestimmt von der Drehachse bzw. Rotationsachse aus den Platzbedarf eines Zahnrades in alle radiale Richtungen. Gleichzeitig ist der Achsabstand des übergriffenen Sonnenrades zum Planetenrad, mit dem es im Zahneingriff steht, kleiner, damit die kurzen Zahnräder mit diesem kämmen können. Die übereinstimmenden Übersetzungen zwischen den Planetenräder des ersten Satzes und dem ersten Sonnenrad sowie zwischen den Planetenrädern des zweiten Satzes und dem zweiten Sonnenrad sind in diesem Fall vorausgesetzt.The different tip diameter of the sun gears can be achieved by the profile shift known in the art. The tooth contact of the sun gears with the larger tip circle is achieved by positive profile shift and according to the tooth contact of the smaller circle in the head circle sun by negative professional shift. The head circle is an imaginary circle that surrounds the teeth of a toothing with equal teeth outside. The tip diameter is accordingly the outside diameter of such a face gear. It determines from the axis of rotation or axis of rotation of the space required by a gear in all radial directions. At the same time, the center distance of the overlapped sun gear to the planet gear meshing with it is smaller so that the short gears can mesh with it. The matching translations between the planet gears of the first Set and the first sun gear and between the planetary gears of the second set and the second sun gear are assumed in this case.
Zumindest die Sonnenräder sind koaxial der Rotationsachse des Rotors angeordnet und gemäß Erfindung außenumfangsseitig der Rotationsachse von einem Stator und dem Rotor des Elektromotors umgeben. Die Sonnenräder und damit auch die mit den Sonnenrädern kämmenden. Planetenräder zumindest teilweise sind innerhalb des Elektromotors angeordnet. Die Rotorwelle ist dementsprechend hohlwellenartig ausgebildet. Der Planetenträger kann seitlich des Elektromotors angeordnet sein, d. h. radial überstehen, oder ist wie eine Ausgestaltung der Erfindungsmeldung vorsieht, mit in den Elektromotor integriert, so dass das Planetendifferenzial von dem Stator und dem Rotor des Elektromotors umgeben ist.At least the sun gears are arranged coaxially to the axis of rotation of the rotor and surrounded according to the invention on the outer peripheral side of the axis of rotation of a stator and the rotor of the electric motor. The sun wheels and thus also those combing with the sun wheels. Planetary gears are at least partially disposed within the electric motor. The rotor shaft is accordingly formed hollow shaft-like. The planet carrier may be arranged laterally of the electric motor, d. H. protrude radially, or is as an embodiment of the invention provides message, integrated with the electric motor, so that the planetary differential is surrounded by the stator and the rotor of the electric motor.
Die Vorteile der Erfindung liegen in dem geringen axialen Bauraum, den die Antriebsvorrichtung für sich beansprucht. Die Antriebsanordnung weist vorzugsweise axiale Abmessungen auf, die geringer sind als die radialen Abmessungen. Die Kosten für die Herstellung der Antriebseinheit sind reduziert. Weiterhin ist die Volumenleistungsdichte dieser Antriebseinheit im Vergleich zu Antriebseinheiten des Standes der Technik verbessert. Die Volumenleistungsdichte ist dabei eine Größe, die bei einem Energiewandler wie der elektromotorischen Antriebseinheit angibt, welche Leistung pro Volumeneinheit dem Wandler entnommen werden kann. Je höher der Wert, desto kleiner kann die Antriebseinheit ausgebildet sein. Montage der Antriebseinheit ist vereinfacht.The advantages of the invention lie in the small axial space that claimed the drive device for itself. The drive arrangement preferably has axial dimensions which are smaller than the radial dimensions. The costs for the production of the drive unit are reduced. Furthermore, the volume density of this drive unit is improved in comparison to drive units of the prior art. The volume power density is a quantity that indicates in an energy converter, such as the electromotive drive unit, which power per unit volume can be taken from the converter. The higher the value, the smaller the drive unit can be formed. Assembly of the drive unit is simplified.
Summenwelle des Differenzials ist vorzugsweise der Planetenträger (der Differenzialkorb). Als Summenwelle wird die Welle des Planetentriebs bezeichnet, die die größten Drehmomente führt und die durch eine Antriebsquelle, in diesem Fall durch den Elektromotor, angetrieben ist. Differenzwellen sind die Abtriebswellen. Der Planetenträger ist, wie eine Ausgestaltung der Erfindung vorsieht, mit einer antriebsfesten Drehverbindung mit dem Rotor verbunden. Die Drehverbindung kann permanent fest sein. In dem Falle sitzt der Planetenträger fest in dem Rotor oder ist mit diesem fest verbunden. Es können auch Teile der Rotorwelle und des Planetenträgers einteilig miteinander ausgebildet sein. Alternativ ist die Drehverbindung eine trennbare Verbindung zwischen Rotor und Planetenträger und ist zum Beispiel eine Kupplung. Die antriebsfeste Drehverbindung ist eine Verbindung, über die Drehmomente und Drehzahlen zwischen den miteinander verbundenen Elementen übertragen werden können Eine alternative Ausgestaltung der Erfindung sieht vor, dass die Antriebsvorrichtung mit einer antriebsfesten Drehverbindung zwischen einem dritten Sonnenrad eines Planetentriebs und dem Rotor versehen ist. Der Planetentrieb ist getrieblich zwischen den Rotor und das Planetendifferenzial geschaltet. Das dritte Sonnenrad kämmt mit Planetenrädern, welche drehbar an dem gleichen Planetenträger gelagert sind wie die Planetenräder des Differenzials. Die Planetenräder stehen mit einem Hohlrad im Zahneingriff, welches vorzugsweise entweder zum Gehäuse oder zur Umgebung der Antriebsvorrichtung fest ist. Das Hohlrad ist bevorzugt mit dem Stator des Elektromotors verbunden.The sum of the differential shaft is preferably the planet carrier (the differential cage). The sum shaft is the shaft of the planetary drive, which carries the largest torques and which is driven by a drive source, in this case by the electric motor. Differential shafts are the output shafts. The planet carrier is, as an embodiment of the invention provides, connected to a drive-fixed rotary joint with the rotor. The rotary joint can be permanently fixed. In the case of the planet carrier is firmly seated in the rotor or is firmly connected to this. It is also possible for parts of the rotor shaft and the planet carrier to be integrally formed with each other. Alternatively, the rotary joint is a separable connection between the rotor and planet carrier and is for example a coupling. The drive-fixed rotary joint is a connection, via which torques and rotational speeds between the interconnected elements can be transmitted. An alternative embodiment of the invention provides that the drive device is provided with a drive-fixed rotary connection between a third sun gear of a planetary drive and the rotor. The planetary drive is geared between the rotor and the planetary differential. The third sun gear meshes with planetary gears, which are rotatably mounted on the same planet carrier as the planet gears of the differential. The planet gears are meshed with a ring gear, which is preferably fixed either to the housing or to the environment of the drive device. The ring gear is preferably connected to the stator of the electric motor.
In eine derartige Antriebseinheit kann weiterhin auch ein Nebenantrieb (Elektromotor) integriert sein, der über ein Überlagerungsgetriebe getrieblich mit dem Planetendifferenzial verbunden ist. In diesem Fall ist es denkbar, dass zumindest ein Planetentrieb des Überlagerungsgetriebes ähnlich der vorgenannten Anordnung in den Haupt- und/oder Nebenantrieb integriert ist, so dass eine sehr kompakte unabhängige Antriebseinheit entsteht.In such a drive unit can also be integrated a secondary drive (electric motor), which is connected via a superposition gearbox with the planetary differential. In this case, it is conceivable that at least one planetary gear of the superposition gear is similar to the aforementioned arrangement in the main and / or auxiliary drive integrated, so that a very compact independent drive unit is formed.
Beschreibung der ZeichnungenDescription of the drawings
Das Planetendifferenzial
Das Planetendifferenzial
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102008061946 A1 [0002] DE 102008061946 A1 [0002]
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE201010048837 DE102010048837A1 (en) | 2010-10-18 | 2010-10-18 | driving device |
PCT/EP2011/062599 WO2012052201A1 (en) | 2010-10-18 | 2011-07-22 | Drive device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE201010048837 DE102010048837A1 (en) | 2010-10-18 | 2010-10-18 | driving device |
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DE102010048837A1 true DE102010048837A1 (en) | 2012-04-19 |
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DE201010048837 Ceased DE102010048837A1 (en) | 2010-10-18 | 2010-10-18 | driving device |
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WO (1) | WO2012052201A1 (en) |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104149610B (en) * | 2014-08-08 | 2016-11-23 | 北京理工大学 | 4 × 4 vehicle wheel limit motor power coupled drive systems |
DE102017107803B3 (en) * | 2017-04-11 | 2018-06-21 | Schaeffler Technologies AG & Co. KG | Drive device for a motor vehicle |
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DE102008061946A1 (en) | 2008-12-12 | 2010-06-17 | Schaeffler Kg | Electric drive unit with variable torque distribution |
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JPH07156673A (en) * | 1993-12-01 | 1995-06-20 | Nissan Motor Co Ltd | Driving gear for electric vehicle |
DE19954590A1 (en) * | 1999-11-12 | 2001-05-17 | Linde Ag | Drive arrangement e.g. for forklift truck, has permanent magnet electric motor with rotor, stator and differential gear integrated into rotor of electric motor, which forms central part of wheel axle |
US7384357B2 (en) * | 2006-05-05 | 2008-06-10 | Ford Global Technologies, Llc | Speed reduction gear train with planetary differential for electric motor axle drive |
DE102009012256A1 (en) * | 2009-03-07 | 2010-09-09 | Schaeffler Technologies Gmbh & Co. Kg | Drive device for an electric vehicle |
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2010
- 2010-10-18 DE DE201010048837 patent/DE102010048837A1/en not_active Ceased
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DE102008061946A1 (en) | 2008-12-12 | 2010-06-17 | Schaeffler Kg | Electric drive unit with variable torque distribution |
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