DE102011088892A1 - Electromotive drive unit for driving wheel of vehicle, has differential arranged in rotor shaft, and electric machine connected with driven shafts, where rotational axes of rotor and input shafts are formed parallel to each other - Google Patents
Electromotive drive unit for driving wheel of vehicle, has differential arranged in rotor shaft, and electric machine connected with driven shafts, where rotational axes of rotor and input shafts are formed parallel to each other Download PDFInfo
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- DE102011088892A1 DE102011088892A1 DE102011088892A DE102011088892A DE102011088892A1 DE 102011088892 A1 DE102011088892 A1 DE 102011088892A1 DE 102011088892 A DE102011088892 A DE 102011088892A DE 102011088892 A DE102011088892 A DE 102011088892A DE 102011088892 A1 DE102011088892 A1 DE 102011088892A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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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
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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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
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2036—Electric differentials, e.g. for supporting steering vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
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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
- F16H48/36—Differential gearings characterised by intentionally generating speed difference between outputs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
- B60L2240/486—Operating parameters
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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
- F16H48/36—Differential gearings characterised by intentionally generating speed difference between outputs
- F16H2048/364—Differential gearings characterised by intentionally generating speed difference between outputs using electric or hydraulic motors
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/72—Electric energy management in electromobility
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- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine elektromotorische Antriebseinheit mit wenigstens einer ersten elektrischen Maschine und mit einem Differenzial, wobei die erste elektrische Maschine einen Rotor und einen Stator aufweist und dabei zwischen dem Rotor undwenigstens einer Eingangswelle des Differenzials eine rotationsfeste Wirkverbindung herstellbar ist und dabei an der Eingangswelle anliegende Drehmomente in dem Differenzial auf wenigstens zwei mit dem Differenzial getrieblich wirkverbundene Abtriebswellen verteilbar sind, und wobei das Differenzial konzentrisch so in der Rotorwelle angeordnet ist, dass Rotationsachsen der Rotorwelle und der Eingangswelle parallel aufeinander liegen.The invention relates to an electromotive drive unit with at least one first electric machine and with a differential, wherein the first electric machine has a rotor and a stator and thereby between the rotor and at least one input shaft of the differential, a rotationally fixed operative connection can be produced and thereby applied to the input shaft torques in the differential can be distributed to at least two output shafts operatively connected to the differential, and wherein the differential is arranged concentrically in the rotor shaft, that axes of rotation of the rotor shaft and the input shaft are parallel to each other.
Hintergrund der ErfindungBackground of the invention
Eine derartige Antriebseinheit ist in
Beschreibung der ErfindungDescription of the invention
Die Aufgabe der Erfindung ist es, eine elektromotorische Antriebseinheit zu schaffen, die variabler einsetzbar ist. The object of the invention is to provide an electric motor drive unit, which is variable in use.
Die Aufgabe ist nach dem Gegenstand des Anspruchs 1 und durch auf diesen rückbezogene Ansprüche gelöst.The problem is solved by the subject matter of
Gemäß Erfindung weist die elektromotorische Antriebseinheit wenigstens eine weitere als zweite elektrische Maschine bezeichnete elektrische Maschine auf. Die zweite elektrische Maschine ist mit zumindest einer der Abtriebswellen wirkverbunden. Durch die zweite Maschine können vorteilhaft zusätzlich zu Antriebsmomenten der elektromotorischen Antriebsmaschine weitere Momente im Sinne von Torque-Vectoring-Momenten oder Stellmomenten auf wenigstens eine der Abtriebswellen aufgebracht werden. Abtriebswellen sind die Wellen der Antriebseinheit, auf die durch durch das Differenzial die Antriebsleistung der elektromotorischen Antriebseinheiten verteilt werden. Eine der Abtriebswellen ist gewöhnlich mit einem in Fahrtrichtung linken Fahrzeugrad und die andere mit einem in Fahrtrichtung rechten Fahrzeugrad wirkverbunden. Bei Geradeausfahrt drehen die Abtriebswellen links und rechts mit der Eingangswelle des Differenzials üblicherweise mit gleicher Drehzahl. Bei Kurvenfahrt oder bei unterschiedlichen Fahrbahnzuständen links und rechts dreht eine der Abtriebswellen schneller als die andere, wobei das Differenzial „natürlich“ ausgleicht. According to the invention, the electromotive drive unit has at least one further electrical machine designated as a second electrical machine. The second electric machine is operatively connected to at least one of the output shafts. By means of the second machine, additional moments in the sense of torque vectoring moments or setting torques can advantageously be applied to at least one of the output shafts in addition to drive torques of the electromotive drive machine. Output shafts are the shafts of the drive unit, are distributed by the drive power of the electric motor drive units through the differential. One of the output shafts is usually operatively connected to a left in the direction of travel vehicle and the other with a right in the direction of travel vehicle. When driving straight ahead, the output shafts turn left and right with the input shaft of the differential usually at the same speed. When cornering or with different road conditions left and right turns one of the output shafts faster than the other, the differential "natural" compensates.
Die Eingangswelle ist der Differenzialkorb, in dem im klassischen Differenzial Ausgleichskegelräder drehbar gelagert sind. Die Ausgleichskegelräder stehen im Zahneingriff mit Kegelrädern einer Ausgangswelle, deren Rotationsachse auf der Rotationsachse der Rotorwelle der ersten elektrischen Antriebsmaschine liegt. The input shaft is the differential cage in which bevel wheels are rotatably mounted in the classic differential. The bevel gears are in meshing engagement with bevel gears of an output shaft whose axis of rotation lies on the axis of rotation of the rotor shaft of the first electric drive machine.
Die Eingangswelle eines Planetendifferenzials ist ein Planetenträger oder ein Hohlrad. An dem Planetenträger sind zwei Sätze Ausgleichs-Planetenräder drehbar gelagert sind. Die Planetenräder eines Satzes stehen gemeinsam mit einem der Sonnenräder im Zahneingriff. Ein Sonnenrad ist mit einer Ausgangswelle links und das andere Sonnenrad mit einer Ausgangswelle rechts drehstarr aber um die Rotationsachse drehbar verbunden. Je nach Typ des Differenzials kann jedes Planetenrad des einen Satzes auch mit einem Planetenrad des anderen Planetensatzes im Zahneingriff stehen. In einem solchen Planetendifferenzial ist der Planetenträger die Eingangswelle. Die Rotationsachsen der Ausgangswellen liegen auf der Rotationsachse der Rotorwelle der ersten elektrischen Antriebsmaschine. Wenn das Hohlrad die Eingangswelle ist, weist das Planetendifferenzial zwei Plantenträger auf, an denen jeweils ein Satz Planetenräder fest ist. Die Planetenräder beider Sätze kämmen mit dem Hohlrad. Jedem Planetensatz ist ein Sonnenrad zugeordnet, die über einen Stelltrieb mit einem Stellantrieb verbunden sind.The input shaft of a planetary differential is a planet carrier or a ring gear. On the planet carrier two sets of compensation planet gears are rotatably mounted. The planet gears of a set are in mesh with one of the sun gears. A sun gear is connected with an output shaft on the left and the other sun gear with an output shaft on the right torsionally rigid but rotatably connected to the rotation axis. Depending on the type of differential, each planetary gear of the one set can also mesh with a planetary gear of the other planetary gearset. In such a planetary differential, the planet carrier is the input shaft. The axes of rotation of the output shafts lie on the axis of rotation of the rotor shaft of the first electric drive machine. If the ring gear is the input shaft, the planetary differential on two planetary carriers, where each set of planetary gears is fixed. The planet gears of both sets mesh with the ring gear. Each planetary gear set is associated with a sun gear, which are connected via an actuating drive with an actuator.
Die Ausgangswellen sind mit den Abtriebswellen Drehmomente übertragend wirkverbunden. Dabei liegen sich jeweils eine Ausgangswelle und eine Abtriebswelle koaxial gegenüber oder gehen ineinander über. Alternativ sind die jeweilige Ausgangswelle und eine der Abtriebswellen zueinander versetzt oder geneigt angeordnet und mit einer getriebliche Verbindung miteinander wirkverbunden. So sieht eine Ausgestaltung der Erfindung vor, dass die Rotationsachsen der Ausgangswellen parallel und mit radialem Abstand zur jeweiligen Abtriebswelle angeordnet sind. In diesem Fall ist eine Drehmomente übertragende Wirkverbindung zwischen den beiden Wellen beispielsweise über zwei Stirn(zahn)räder oder Kegelzahnräder hergestellt, die miteinander im Zahneingriff stehen. Eines der Zahnräder sitzt auf der Ausgangswelle und eines auf der jeweiligen Abtriebswelle. The output shafts are operatively connected to the output shafts torque transmitting. In each case, an output shaft and an output shaft are coaxial with each other or merge into each other. Alternatively, the respective output shaft and one of the output shafts are mutually offset or inclined and operatively connected to each other with a geared connection. Thus, an embodiment of the invention provides that the axes of rotation of the output shafts are arranged parallel to and at a radial distance from the respective output shaft. In this case, a torque-transmitting active connection between the two shafts, for example via two end (tooth) wheels or bevel gears made, which are in meshing engagement with each other. One of the gears sits on the output shaft and one on the respective output shaft.
Die natürliche Ausgleichswirkung des Differenzials kann mittels der zweiten elektrischen Antriebsmaschine beeinflusst bzw. überbrückt werden, weil diese direkt mit der Abtriebswelle oder über eine getriebliche Verbindung mit der Abtriebswelle verbunden ist. Eine direkte Verbindung kann starr oder über eine Kupplung ausgebildet sein. Eine getriebliche Verbindung kann über ein System aus miteinander im Zahneingriff stehender Zahnräder gebildet sein. Eine Ausgestaltung der Erfindung sieht vor, dass die zweite elektrische Antriebsmaschine mit einer Anschlusswelle des Differenzials drehstarr wirkverbindbar oder wirkverbunden ist. Anschlusswellen des Differenzials sind alle Wellen die Leistungen führen und die mit der Umgebungskonstruktion des Differenzials in Drehmomente übertragender Wirkverbindung stehen. Anschlusswellen sind der Differenzialkorb, z.B. der Planetenträger, die Ausgangswellen oder ein Hohlrad. Durch die Erfindung ist die elektrische Antriebseinheit variabler und an die modernen Ansprüche an Fahrsicherheit angepasst, da durch das Torque-Vectoring gezielt Fahrzustände beeinflussbar sind. The natural balance effect of the differential can be influenced or bridged by means of the second electric drive machine, because it is connected directly to the output shaft or via a geared connection with the output shaft. A direct connection can be rigid or formed via a coupling. A geared connection may be formed via a system of meshing gearwheels. An embodiment of the invention provides that the second electric drive machine with a connection shaft of the differential is drehfestarr operatively connected or operatively connected. Connection shafts of the differential are all shafts that perform the services and that are in operative connection with the surrounding structure of the differential in torques. Connecting shafts are the differential cage, e.g. the planet carrier, the output shafts or a ring gear. By means of the invention, the electric drive unit is variable and adapted to the modern demands on driving safety, since driving states can be influenced by the torque vectoring in a targeted manner.
Im Falle einer Wirkverbindung mit dem Differenzialkorb kann die Eingangsleistung der ersten elektrischen Antriebsmaschine mit weiteren Leistungen von der zweiten elektrischen Antriebsmaschine überlagert werden (Boosten). Im Falle der Wirkverbindungen mit den anderen Anschlusswellen greift die Torque-Vectoring-Funktion.In the case of an operative connection with the differential cage, the input power of the first electric drive machine can be superimposed with further powers by the second electric drive machine (boosting). In the case of the active connections with the other connecting shafts, the torque vectoring function is used.
Eine Ausgestaltung der Erfindung sieht vor, dass die zweite elektrische Maschine mit beiden Abtriebswellen, beispielsweise über einen Stelltrieb, mit beiden Sonnenrädern, wirkverbunden ist. An embodiment of the invention provides that the second electric machine with two output shafts, for example via an actuator, with both sun gears, is operatively connected.
Die Erfindung sieht weiter für eine elektromotorische Antriebseinheit mit wenigstens einer ersten elektrischen Maschine und mit einem Differenzial, wobei die erste elektrische Maschine einen Rotor und einen Stator aufweist und dabei zwischen dem Rotor und wenigstens einer Eingangswelle des Differenzials eine rotationsfeste Wirkverbindung herstellbar ist und dabei an der Eingangswelle anliegende Drehmomente in dem Differenzial auf wenigstens zwei mit dem Differenzial getrieblich wirkverbundene Abtriebswellen verteilbar sind, und wobei das Differenzial konzentrisch so in der Rotorwelle angeordnet ist, vor, dass die Rotationsachsen der der Rotorwelle und der Eingangswelle parallel aufeinander liegen, dass die Abtriebswellen Rotationsachsen aufweisen, die koaxial zueinander und parallel zu den Rotationsachsen der Rotorwelle und der Eingangswelle angeordnet sind.The invention further provides for an electromotive drive unit with at least one first electric machine and with a differential, wherein the first electric machine has a rotor and a stator and thereby a rotationally fixed active connection can be produced between the rotor and at least one input shaft of the differential Input torque applied torques in the differential to at least two with the differential gear operatively connected output shafts are distributed, and wherein the differential is concentrically arranged in the rotor shaft, before, that the axes of rotation of the rotor shaft and the input shaft are parallel to each other, that the output shafts have axes of rotation which are arranged coaxially with each other and parallel to the axes of rotation of the rotor shaft and the input shaft.
Die Abtriebswellen und das Differenzial sind außerhalb des Differenzials miteinander wirkverbunden. Konzentrische Anordnungen von elektrischen Maschinen und deren Getrieben/Differenzialen weisen den Vorteil auf, dass die Antriebseinheit axial wenig Bauraum beansprucht und deshalb gut zwischen zwei angetriebene Fahrzeugräder passen. Der Durchmesser der elektrische Maschine, die ein Elektromotor oder ein Motor/Generator ist, kann abhängig vom Leistungsbedarf der Antriebseinheit so groß sein, dass seine Anordnung direkt mittig zwischen den links und rechts liegenden Fahrzeugrädern nicht vorteilhaft ist. Der Vorteil dieser erfindungsgemäßen Anordnung liegt darin, dass die Antriebseinheiten mit Differenzial und ggf. mit Torque-Vectoring-Antrieben gezielt von der Achse entfernt an Stellen im Fahrzeug angeordnet werden können, die mehr Platz bieten. Der Abstand zwischen den Ausgangswellen und den Abtriebswellen wird durch eine getriebliche Verbindung überbrückt, die z.B. ein Riemen- oder Kettentrieb oder durch miteinander im Zahnreingriff stehende Zahnräder. The output shafts and the differential are operatively connected to each other outside the differential. Concentric arrangements of electrical machines and their transmissions / differentials have the advantage that the drive unit requires little axial space and therefore fits well between two driven vehicle wheels. The diameter of the electric machine, which is an electric motor or a motor / generator, depending on the power requirement of the drive unit may be so large that its arrangement directly midway between the left and right vehicle wheels is not advantageous. The advantage of this arrangement according to the invention is that the drive units with differential and possibly with torque vectoring drives can be arranged away from the axle at locations in the vehicle that offer more space. The distance between the output shafts and the output shafts is bridged by a geared connection, e.g. a belt or chain drive or by toothed mesh with each other.
Beschreibung der ZeichnungDescription of the drawing
Das erste Planetenträger
Die erste getriebliche Verbindung
Zwischen dem Rotor
Die zweite elektrische Maschine
Der Stelltrieb
Bei Geradeausfahrt werden die Sonnenräder
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 102007021359 A1 [0002] DE 102007021359 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102011088892A DE102011088892A1 (en) | 2011-12-16 | 2011-12-16 | Electromotive drive unit for driving wheel of vehicle, has differential arranged in rotor shaft, and electric machine connected with driven shafts, where rotational axes of rotor and input shafts are formed parallel to each other |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011088892A DE102011088892A1 (en) | 2011-12-16 | 2011-12-16 | Electromotive drive unit for driving wheel of vehicle, has differential arranged in rotor shaft, and electric machine connected with driven shafts, where rotational axes of rotor and input shafts are formed parallel to each other |
Publications (1)
Publication Number | Publication Date |
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DE102011088892A1 true DE102011088892A1 (en) | 2013-06-20 |
Family
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Application Number | Title | Priority Date | Filing Date |
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DE102011088892A Withdrawn DE102011088892A1 (en) | 2011-12-16 | 2011-12-16 | Electromotive drive unit for driving wheel of vehicle, has differential arranged in rotor shaft, and electric machine connected with driven shafts, where rotational axes of rotor and input shafts are formed parallel to each other |
Country Status (1)
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DE (1) | DE102011088892A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150151634A1 (en) * | 2012-05-29 | 2015-06-04 | Schaeffler Technologies Gmbh & Co. Kg | Electric axle for a vehicle |
DE102019203387A1 (en) * | 2019-03-13 | 2020-09-17 | Audi Ag | Drive arrangement |
DE102012204285B4 (en) | 2012-03-19 | 2021-07-29 | Schaeffler Technologies AG & Co. KG | Transmission device with a transfer case and a torque vectoring unit and drive device with such a transmission device |
DE102020110161A1 (en) | 2020-04-14 | 2021-10-14 | Schaeffler Technologies AG & Co. KG | Electric drive device for a motor vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007021359A1 (en) | 2006-05-05 | 2008-03-20 | Ford Global Technologies, LLC, Dearborn | Reduction gearbox with planetary differential for electric axle drive motors |
-
2011
- 2011-12-16 DE DE102011088892A patent/DE102011088892A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007021359A1 (en) | 2006-05-05 | 2008-03-20 | Ford Global Technologies, LLC, Dearborn | Reduction gearbox with planetary differential for electric axle drive motors |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012204285B4 (en) | 2012-03-19 | 2021-07-29 | Schaeffler Technologies AG & Co. KG | Transmission device with a transfer case and a torque vectoring unit and drive device with such a transmission device |
US20150151634A1 (en) * | 2012-05-29 | 2015-06-04 | Schaeffler Technologies Gmbh & Co. Kg | Electric axle for a vehicle |
US9527382B2 (en) * | 2012-05-29 | 2016-12-27 | Schaeffler Technologies Gmbh & Co. Kg | Electric axle for a vehicle |
DE102012208926B4 (en) * | 2012-05-29 | 2020-03-12 | Schaeffler Technologies AG & Co. KG | Electric axle for a vehicle |
DE102019203387A1 (en) * | 2019-03-13 | 2020-09-17 | Audi Ag | Drive arrangement |
DE102020110161A1 (en) | 2020-04-14 | 2021-10-14 | Schaeffler Technologies AG & Co. KG | Electric drive device for a motor vehicle |
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