DE102014205886A1 - Electric drive unit, in particular for a hybrid electric motor vehicle - Google Patents
Electric drive unit, in particular for a hybrid electric motor vehicle Download PDFInfo
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- DE102014205886A1 DE102014205886A1 DE102014205886.4A DE102014205886A DE102014205886A1 DE 102014205886 A1 DE102014205886 A1 DE 102014205886A1 DE 102014205886 A DE102014205886 A DE 102014205886A DE 102014205886 A1 DE102014205886 A1 DE 102014205886A1
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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
- 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
- B60K6/38—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 driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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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
- B60K6/40—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 assembly or relative disposition of components
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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
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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
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
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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
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
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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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- 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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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Eine Elektroantriebseinheit, insbesondere für ein Hybrid-Elektrokraftfahrzeug, weist einen Elektromotor (4) auf, wobei der Elektromotor (4) einen Stator (6) und einen Rotor (8) umfasst. Des Weiteren weist die Elektroantriebseinheit eine Trennkupplung (10) auf, wobei die Trennkupplung (10) zum Herstellen und zum Unterbrechen eines Kraftschlusses zwischen dem Elektromotor (4) und einem Antriebsabtrieb (24) der Elektroantriebseinheit dient. Die Trennkupplung (10) ist innerhalb des Rotors (8) des Elektromotors (4) angeordnet.An electric drive unit, in particular for a hybrid electric motor vehicle, has an electric motor (4), wherein the electric motor (4) comprises a stator (6) and a rotor (8). Furthermore, the electric drive unit has a separating clutch (10), wherein the separating clutch (10) serves for producing and interrupting a frictional connection between the electric motor (4) and a drive output (24) of the electric drive unit. The separating clutch (10) is arranged inside the rotor (8) of the electric motor (4).
Description
Die vorliegende Erfindung betrifft eine Elektroantriebseinheit, insbesondere für ein Hybrid-Elektrokraftfahrzeug, mit einem Elektromotor, wobei der Elektromotor einen Stator und einen Rotor umfasst, und mit einer Trennkupplung, wobei die Trennkupplung zum Herstellen und zum Unterbrechen eines Kraftschlusses zwischen dem Elektromotor und einem Antriebsabtrieb der Elektroantriebseinheit dient. The present invention relates to an electric drive unit, in particular for a hybrid electric motor vehicle, with an electric motor, wherein the electric motor comprises a stator and a rotor, and with a disconnect clutch, wherein the disconnect clutch for establishing and interrupting a frictional connection between the electric motor and a drive output of Electric drive unit is used.
Nach allgemeiner Definition ist ein Hybrid-Elektrokraftfahrzeug (englisch: Hybrid Electric Vehicle, HEV) ein Kraftfahrzeug, das von mindestens einem Elektromotor und einem weiteren Energiewandler angetrieben wird und das Energie aus einem Betriebskraftstofftank und einer Speichereinrichtung für elektrische Energie bezieht, die im Fahrzeug eingebaut ist. Gegenwärtig werden Verbrennungsmotoren mit Elektromotoren und Akkumulatoren kombiniert, es lassen sich aber beispielsweise auch Brennstoffzellen beziehungsweise Doppelschicht-Kondensatoren einsetzen. In diesem Antriebkonzept, im Folgenden als Hybridantrieb bezeichnet, ergänzen sich die Leistungskennlinien eines Elektromotors mit seinem hohen Drehmoment im unteren Drehzahlbereich und eines Verbrennungsmotors, dessen Stärken im oberen Drehzahlbereich liegen. Mit einem Hybridantrieb als Antriebskonzept lässt sich gegenüber dem herkömmlichen Antrieb mit einem Verbrennungsmotors die Effizienz zu verbessern, der fossile Kraftstoffverbrauch verringern oder die Leistung im niedrigen Drehzahlbereich steigern. Zusätzlich kann durch eine Nutzbremse ein Teil der Bremsenergie zurückgewonnen werden. By general definition, a hybrid electric vehicle (HEV) is a motor vehicle powered by at least one electric motor and another energy converter that draws energy from an operating fuel tank and an electrical energy storage device installed in the vehicle , At present, combustion engines are combined with electric motors and accumulators, but it is also possible, for example, to use fuel cells or double-layer capacitors. In this drive concept, hereinafter referred to as hybrid drive, complement the performance characteristics of an electric motor with its high torque in the lower speed range and an internal combustion engine whose strengths are in the upper speed range. With a hybrid drive as a drive concept can be compared to the conventional drive with an internal combustion engine to improve efficiency, reduce fossil fuel consumption or increase the performance in the low speed range. In addition, a portion of the braking energy can be recovered by a regenerative brake.
Grundsätzlich lässt sich ein Hybridantrieb als serieller oder paralleler Hybridantrieb aufbauen. Während beim seriellen Hybridantrieb der zweite Energiewandler keinerlei mechanische Verbindung mehr zur eigentlichen Antriebsachse hat, treiben beim parallelen Hybridantrieb die beiden Antriebsmodule die Antriebachse an. Des Weiteren kommen Mischhybridantriebe zum Einsatz. Mischhybride kombinieren, oft auch variabel, den seriellen und den parallelen Hybridantrieb während der Fahrt entsprechend den Fahrzuständen. Ein besonderes Beispiel eines Mischhybridantriebs stellt der leistungsverzweigte Hybridantrieb dar. Dabei wird ein Teil der Leistung des Verbrennungsmotors mechanisch, ein weiterer Teil über die als elektrisches Getriebe (serieller Hybridantrieb) arbeitende Motor-Generator-Kombination auf die Räder übertragen. In principle, a hybrid drive can be set up as a serial or parallel hybrid drive. While in the serial hybrid drive, the second energy converter has no mechanical connection to the actual drive axle, the two drive modules drive the drive axle in parallel hybrid drive. Furthermore mixed hybrid drives are used. Mixed hybrids combine, often variable, the serial and the parallel hybrid drive while driving according to the driving conditions. A particular example of a hybrid hybrid drive is the power-split hybrid drive. In this case, part of the power of the internal combustion engine is transmitted mechanically, while another part is transmitted to the wheels via the motor-generator combination operating as an electric transmission (serial hybrid drive).
Bei parallelen oder leistungsverzweigten Hybridantrieben kann die Auslegung und Dimensionierung so erfolgen, dass der Verbrennungsmotor eine höhere Endgeschwindigkeit erreicht als der Elektromotor. Beispielsweise unterstützt der Elektromotor die Verbrennungsmaschine bis zu einer Geschwindigkeit von 100 km/h und erreicht dann ihre Grenzdrehzahl. Um in der Endgeschwindigkeit nicht durch den Elektromotor limitiert zu sein, wird diese bei höheren Geschwindigkeiten – gemäß obigem Beispiel oberhalb von 100 km/h – vom Antriebsstrang entkoppelt, so dass bei dann stehendem Elektromotor auch höhere Geschwindigkeiten gefahren werden können. In parallel or power-split hybrid drives, the design and dimensioning can be done so that the internal combustion engine reaches a higher end speed than the electric motor. For example, the electric motor supports the internal combustion engine up to a speed of 100 km / h and then reaches its limit speed. In order not to be limited by the electric motor in the final speed, this is decoupled at higher speeds - according to the example above above 100 km / h - from the drive train, so that when the electric motor then higher speeds can be driven.
Zur Entkopplung des Elektromotors vom Antriebsstrang wird in der Regel eine Trennkupplung eingesetzt, die beispielsweise als Zahnkupplung, Klauenkupplung oder Lamellenkupplung ausgestaltet sein kann. Die Betätigung der Trennkupplung kann elektrisch, mechanisch, hydraulisch oder elektromagnetisch erfolgen. For decoupling the electric motor from the drive train, a separating clutch is usually used, which can be configured for example as a toothed clutch, dog clutch or multi-plate clutch. The actuation of the separating clutch can be done electrically, mechanically, hydraulically or electromagnetically.
Die Aufgabe der vorliegenden Erfindung besteht darin, die eingangs genannte Elektroantriebseinheit derart auszubilden, dass sie nur ein geringes Bauvolumen benötigt. The object of the present invention is to form the aforementioned electric drive unit such that it requires only a small volume of construction.
Die Aufgabe wird durch eine Elektroantriebseinheit mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der erfindungsgemäßen Elektroantriebseinheit sind Gegenstand der abhängigen Patentansprüche 2 bis 16. The object is achieved by an electric drive unit having the features of patent claim 1. Advantageous embodiments of the electric drive unit according to the invention are the subject of the
Erfindungsgemäß umfasst die Elektroantriebseinheit einen Elektromotor, wobei der Elektromotor einen Stator und einen Rotor umfasst, und eine Trennkupplung, wobei die Trennkupplung zum Herstellen und zum Unterbrechen eines Kraftschlusses zwischen dem Elektromotor und einem Antriebsabtrieb der Elektroantriebseinheit dient. Weiterhin ist die Trennkupplung innerhalb des Rotors des Elektromotors angeordnet. According to the invention, the electric drive unit comprises an electric motor, the electric motor comprising a stator and a rotor, and a disconnect clutch, wherein the disconnect clutch is used to establish and interrupt a frictional connection between the electric motor and a drive output of the electric drive unit. Furthermore, the separating clutch is arranged within the rotor of the electric motor.
Basierend auf umfangreichen Untersuchungen an verschiedenen der eingangs genannten Elektroantriebseinheiten wurde überraschenderweise festgestellt, dass sich sowohl die mechanischen als auch die thermischen Anforderungen an die Elektroantriebseinheit auch dann noch erfüllen lassen, wenn die Trennkupplung innerhalb des Rotors des Elektromotors angeordnet ist. Based on extensive research on various of the above-mentioned electric drive units, it has surprisingly been found that both the mechanical and the thermal requirements of the electric drive unit can be fulfilled even when the separating clutch is arranged inside the rotor of the electric motor.
Durch die Anordnung in dem Rotor wird für die Trennkupplung kein eigenes Gehäuse mehr benötigt und es ergibt sich ein besonders platzsparender und auch robuster Aufbau der Elektroantriebseinheit, der zudem gegenüber herkömmlichen Elektroantriebseinheiten gewichtssparender ausgeführt werden kann. Dies ist von besonderem Vorteil bei der Verwendung in Fahrzeugen, insbesondere in Hybrid-Elektrofahrzeugen. Due to the arrangement in the rotor no separate housing is required for the clutch and it results in a particularly space-saving and robust construction of the electric drive unit, which can also be performed weight-saving compared to conventional electric drive units. This is of particular advantage for use in vehicles, especially in hybrid electric vehicles.
Vorzugsweise umfasst die Trennkupplung eine kreisringförmige Schaltmuffe, die zum Herstellen und Unterbrechen des Kraftschlusses zwischen einer ersten und einer zweiten Position axial verschiebbar gelagert ist, wobei die Schaltmuffe in der ersten axialen Position den Kraftschluss herstellt und in der zweiten axialen Position den Kraftschluss unterbricht. Diese Ausgestaltung der Trennkupplung ermöglicht es, den im Rotor vorhandenen Bauraum bei nur unwesentlich vergrößerter Baulänge des Rotors zu nutzen. Preferably, the separating clutch comprises an annular sliding sleeve, which is for producing and interrupting the frictional connection between a first and a second position axially is slidably mounted, wherein the shift sleeve in the first axial position produces the frictional connection and interrupts the frictional connection in the second axial position. This embodiment of the separating clutch makes it possible to use the available space in the rotor space with only slightly larger overall length of the rotor.
Vorzugsweise weist die Schaltmuffe eine Innenverzahnung auf, die zum Eingriff in eine Außenverzahnung eines ersten und eines zweiten Zahnkranzes ausgebildet ist, wobei der erste Zahnkranz mit dem Elektromotor verbunden ist und der zweite Zahnkranz mit dem Antriebsabtrieb verbunden ist. Die Verwendung von in Eingriff stehenden Zahnrädern bei der Trennkupplung erlaubt die Übertragung von hohen Drehmomenten. Preferably, the shift sleeve has an internal toothing, which is designed to engage in an external toothing of a first and a second ring gear, wherein the first ring gear is connected to the electric motor and the second ring gear is connected to the drive output. The use of meshing gears in the disconnect clutch allows the transmission of high torques.
Besonders vorteilhaft ist die Trennkupplung hydraulisch betätigbar ausgebildet. Damit ist ein besonders störunanfälliger Betrieb der Trennkupplung in der Elektroantriebseinheit möglich, da sie ohne elektrische Bauteile aufgebaut werden kann. Zudem können mit der Hydraulik energiesparend hohe Schaltkräfte realisiert werden. Ein schneller und sicherer Kupplungsvorgang kann so realisiert werden. Particularly advantageously, the separating clutch is formed hydraulically actuated. For a particularly störunanfälliger operation of the clutch in the electric drive unit is possible, since it can be constructed without electrical components. In addition, energy-saving high switching forces can be realized with the hydraulics. A fast and reliable coupling process can be realized in this way.
Vorzugsweise steht die Trennkupplung mit Hydraulikkanälen in Verbindung, wobei der dafür notwendige Hydraulikdruck über die Hydraulikkanäle einem für die Elektroantriebseinheit ohnehin vorgesehenen Schmiermittelsystem entnommen werden kann. Es ergibt sich damit eine Verringerung der Bauteile in der Trennkupplung durch Synergie. The separating clutch is preferably in communication with hydraulic passages, wherein the hydraulic pressure required for this purpose can be withdrawn via the hydraulic passages to a lubricant system provided in any case for the electric drive unit. This results in a reduction of the components in the clutch through synergy.
Die zur Betätigung der Trennkupplung einzusetzende Energiemenge ist bei dieser Ausgestaltung nur gering. Dadurch ist es möglich, dass ein Hydraulikarbeitsdruck in den Hydraulikkanälen zwischen (nur) 2 bar und 4 bar liegt. The amount of energy to be used for actuating the separating clutch is only slight in this embodiment. This makes it possible for a hydraulic working pressure in the hydraulic channels to be between (only) 2 bar and 4 bar.
Die vorstehend beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung der Ausführungsbeispiele, die in Verbindung mit den Zeichnungen näher erläutert werden. Hierbei zeigen in schematischer Darstellung: The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the exemplary embodiments, which will be described in more detail in conjunction with the drawings. Here are shown in a schematic representation:
Die in
Des Weiteren kann innerhalb des Rotors
Des Weiteren kann gemäß
Die Trennkupplung
In der ersten Position der Schaltmuffe
Der Aufbau und weitere Funktionsdetails der Trennkupplung
Weiterhin ist das Differential
Ein Anschlussstück
Auf der Kolbenführung
Der Schaltkolben
Die Gabel
Die Rückstellkraft zum Einkuppeln wird von dem Federpaket
Die Schaltmuffe
Ein Zahnkranz
Das Differential
Im Folgenden wird nochmals auf die
Das elektrische Signal
Eine Verwendung der erfindungsgemäßen Elektroantriebseinheit ist wegen ihres robusten und kompakten Aufbaus besonders vorteilhaft bei parallelen oder leistungsverzweigten Hybridantrieben gegeben. Dabei werden in der Regel ein Verbrennungsmotor und ein Elektromotor als Antriebsmodule eingesetzt. Die Auslegung und Dimensionierung kann dabei so erfolgen, dass mit dem Verbrennungsmotor eine höhere Endgeschwindigkeit des Fahrzeugs erreicht werden kann als mit dem Elektromotor. Durch Verwendung einer erfindungsgemäßen Trennkupplung wird der Elektromotor nach Erreichen seiner Grenzgeschwindigkeit vom Antriebsstrang getrennt. Bei stehendem Elektromotor kann sodann die höhere Endgeschwindigkeit des Verbrennungsmotors gefahren werden. A use of the electric drive unit according to the invention is given due to their robust and compact design particularly advantageous in parallel or power split hybrid drives. As a rule, an internal combustion engine and an electric motor are used as drive modules. The design and dimensioning can be done so that a higher end speed of the vehicle can be achieved with the internal combustion engine than with the electric motor. By using a separating clutch according to the invention, the electric motor is separated from the drive train after reaching its limit speed. When the electric motor is stationary, the higher end speed of the internal combustion engine can then be driven.
Zusammengefasst betrifft die vorliegende Erfindung also eine Elektroantriebseinheit, insbesondere für ein Hybrid-Elektrokraftfahrzeug, die einen Elektromotor
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen. Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
Claims (16)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014205886.4A DE102014205886A1 (en) | 2014-03-28 | 2014-03-28 | Electric drive unit, in particular for a hybrid electric motor vehicle |
CN201510142428.4A CN104943536A (en) | 2014-03-28 | 2015-03-27 | Electric drive unit especially for hybrid electric vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014205886.4A DE102014205886A1 (en) | 2014-03-28 | 2014-03-28 | Electric drive unit, in particular for a hybrid electric motor vehicle |
Publications (1)
Publication Number | Publication Date |
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DE102014205886A1 true DE102014205886A1 (en) | 2015-10-01 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102014205886.4A Withdrawn DE102014205886A1 (en) | 2014-03-28 | 2014-03-28 | Electric drive unit, in particular for a hybrid electric motor vehicle |
Country Status (2)
Country | Link |
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CN (1) | CN104943536A (en) |
DE (1) | DE102014205886A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19835575A1 (en) * | 1998-08-06 | 2000-03-02 | Mannesmann Sachs Ag | Parallel hybrid drive for a motor vehicle with a clutch integrated in the electrical machine and associated electric motor assembly |
DE102011087290A1 (en) * | 2011-11-29 | 2013-05-29 | Siemens Aktiengesellschaft | Drive device with an electric drive machine |
-
2014
- 2014-03-28 DE DE102014205886.4A patent/DE102014205886A1/en not_active Withdrawn
-
2015
- 2015-03-27 CN CN201510142428.4A patent/CN104943536A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19835575A1 (en) * | 1998-08-06 | 2000-03-02 | Mannesmann Sachs Ag | Parallel hybrid drive for a motor vehicle with a clutch integrated in the electrical machine and associated electric motor assembly |
DE102011087290A1 (en) * | 2011-11-29 | 2013-05-29 | Siemens Aktiengesellschaft | Drive device with an electric drive machine |
Also Published As
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CN104943536A (en) | 2015-09-30 |
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