DE102010031156A1 - Power train for electric car, has electric machines respectively coupled as respective traction drives with translation parts over gear box and clutch unit, where one of electric machines is formed as auxiliary drive for auxiliary unit - Google Patents

Power train for electric car, has electric machines respectively coupled as respective traction drives with translation parts over gear box and clutch unit, where one of electric machines is formed as auxiliary drive for auxiliary unit Download PDF

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DE102010031156A1
DE102010031156A1 DE102010031156A DE102010031156A DE102010031156A1 DE 102010031156 A1 DE102010031156 A1 DE 102010031156A1 DE 102010031156 A DE102010031156 A DE 102010031156A DE 102010031156 A DE102010031156 A DE 102010031156A DE 102010031156 A1 DE102010031156 A1 DE 102010031156A1
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drive
auxiliary
electric
unit
electric machines
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German (de)
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Uwe Griesmeier
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
    • 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
    • B60K25/00—Auxiliary drives
    • B60K25/06—Auxiliary drives from the transmission power take-off
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • 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
    • 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
    • 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

Abstract

The power train has first and second electric machines (1, 5) respectively coupled as respective traction drives with translation parts (i-1, i-2) over a gear box (2) and a clutch unit (7). The second machine is formed as an auxiliary drive for an auxiliary unit i.e. air conditioning compressor (6). The clutch unit is provided between the second machine and another gear box (8) that is connected with one of the translation parts. Another clutch unit (9) is provided between the second machine and the auxiliary unit. Controllable friction-disk clutches are provided as the clutch units. An independent claim is also included for a method for controlling a power train for an electric car.

Description

Die vorliegende Erfindung betrifft einen Antriebsstrang für ein Elektrofahrzeug gemäß der im Oberbegriff des Patentanspruches 1 näher definierten Art. Ferner betrifft die Erfindung ein Verfahren zum Ansteuern eines Antriebsstranges gemäß der im Oberbegriff des Patentanspruches 6 näher definierten Art.The present invention relates to a drive train for an electric vehicle according to the closer defined in the preamble of claim 1. Art Furthermore, the invention relates to a method for driving a drive train according to the closer defined in the preamble of claim 6. Art.

Aus der Fahrzeugtechnik sind Antriebstränge für Elektrofahrzeuge bekannt, die üblicherweise mit einem Fahrmotor ausgestattet sind. Dieser Fahrantrieb treibt über ein Getriebe und über Achsdifferentiale die Räder einer Achse des Fahrzeuges an. Ferner ist in dem Antriebsstrang ein elektrischer Hilfsantrieb zum Antrieb eines Nebenaggregates vorgesehen.Drive trains for electric vehicles are known from automotive engineering, which are usually equipped with a traction motor. This drive drives the wheels of an axle of the vehicle via a gearbox and via axle differentials. Furthermore, an auxiliary electric drive for driving an auxiliary unit is provided in the drive train.

Nachteilig bei den bekannten Antriebsträngen ist es, dass die Auslegungsleistung des Fahrantriebes für ein Fahrzeug mit 1 t Fahrzeugmasse etwa 50 KW beträgt, während bei einer Konstantfahrt in der Ebene im Stadtbereich bei niedrigen Geschwindigkeiten die Leistungsanforderungen nur bei unter 5 KW liegt. Durch die Abdeckung derartig extremer Teillastbereiche ergibt sich bei den bekannten Antriebssträngen insgesamt ein erhöhter Energieverbrauch.A disadvantage of the known drive trains is that the design performance of the drive for a vehicle with 1 t vehicle mass is about 50 KW, while at a constant speed in the urban area at low speeds, the power requirements is only below 5 KW. By covering such extreme partial load ranges results in the known drive trains total increased energy consumption.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, einen Antriebsstrang und ein Verfahren zum Ansteuern des Antriebsstranges der eingangs beschriebenen Gattungen vorzuschlagen, die einen verbesserten Wirkungsgrad über den gesamten Fahrbereich realisieren.The present invention is based on the object to propose a drive train and a method for driving the drive train of the types described above, which realize an improved efficiency over the entire driving range.

Die der Erfindung zu Grunde liegende Aufgabe wird durch einen Antriebsstrang für ein Elektrofahrzeug mit zumindest einer ersten elektrischen Maschine als Fahrantrieb, die über ein Getriebe mit dem Abtrieb gekoppelt ist, und mit zumindest einer zweiten elektrischen Maschine als Hilfsantrieb für den Antrieb eines oder mehrerer Aggregate gelöst, wobei die zweite elektrische Maschine über eine Kupplungseinrichtung oder dergleichen mit dem Abtrieb als Fahrantrieb koppelbar ist.The object underlying the invention is achieved by a drive train for an electric vehicle with at least a first electric machine as traction drive, which is coupled via a transmission to the output, and with at least one second electric machine as an auxiliary drive for driving one or more units , wherein the second electric machine can be coupled via a coupling device or the like with the output as a traction drive.

Somit wird ein Antriebsstrang vorgeschlagen, bei dem die vorgesehenen Antriebe je nach Leistungsdimensionierung eingesetzt werden können, so dass beispielsweise für kleine Leistungsanforderungen der Hilfsantrieb verwendet wird, der für das Leistungsniveau einen besseren Wirkungsgrad als der für höhere Leistungsbereiche ausgelegte Fahrantrieb realisiert. Dies wird bei dem optimierten Antriebsstrang konstruktiv dadurch ermöglicht, dass eine ansteuerbare beziehungsweise schaltbare Verbindung zwischen dem Hilfsantrieb und letztendlich dem Abtrieb beziehungsweise dem vorgeschalteten Getriebe geschaffen wird.Thus, a drive train is proposed, in which the proposed drives can be used depending on the power dimensioning, so that, for example, for small power requirements of the auxiliary drive is used, which realizes a better efficiency than the designed for higher power ranges drive for the performance level. This is structurally possible in the optimized drive train in that a controllable or switchable connection between the auxiliary drive and ultimately the output or the upstream transmission is created.

Beispielsweise kann die Verbindung zwischen der zweiten elektrischen Maschine als Hilfsantrieb und einem bzw. einer den Abtrieb des Fahrzeuges bildenden Getriebe bzw. Getriebestufe durch eine erste Kupplungseinrichtung realisiert werden. Ferner wird zwischen der zweiten elektrischen Maschine und dem Nebenaggregat eine zweite Kupplungseinrichtung vorgesehen. Dadurch ist die kleiner dimensionierte zweite elektrische Maschine sowohl von bzw. mit dem Nebenaggregat als auch von bzw. mit dem Abtrieb entkoppelbar bzw. verbindbar.For example, the connection between the second electric machine as an auxiliary drive and one or the output of the vehicle forming gear or gear stage can be realized by a first coupling device. Furthermore, a second coupling device is provided between the second electric machine and the auxiliary unit. As a result, the smaller-sized second electric machine can be decoupled from or connected to the accessory as well as to or from the output.

Vorzugsweise kann als Kupplungseinrichtung eine ansteuerbare reibschlüssige Lamellenkupplung oder dergleichen vorgesehen werden. Es sind auch andere schaltbare Drehmomentübertragungsmittel, wie z. B. Schaltklauen oder dergleichen einsetzbar. Als Nebenaggregate können beliebige Geräte angetrieben werden. Vorzugsweise kann über den Hilfsantrieb ein Klimakompressor zur Klimatisierung des Elektrofahrzeuges angetrieben werden.Preferably, a controllable frictional multi-disc clutch or the like can be provided as a coupling device. There are also other switchable torque transmitting means, such. B. shift claws or the like used. As ancillaries any devices can be driven. Preferably, an air conditioning compressor for air conditioning of the electric vehicle can be driven via the auxiliary drive.

Die der Erfindung zu Grunde liegende Aufgabe wird auch durch ein Verfahren zum Ansteuern eines Antriebsstranges für ein Elektrofahrzeug, insbesondere für den vorgenannten Antriebsstrang, gelöst, wobei ein elektrischer Fahrantrieb mit hoher Leistungsfähigkeit und ein elektrischer Hilfsantrieb mit geringer Leistungsfähigkeit zum Antrieb eines Nebenaggregates eingesetzt werden. Erfindungsgemäß ist bei dem Verfahren vorgesehen, dass der Hilfsantrieb bei geringen Fahrleistungsanforderungen mit dem Abtrieb als Fahrantrieb verbunden wird.The object of the invention is also achieved by a method for driving a drive train for an electric vehicle, in particular for the aforementioned drive train, wherein an electric traction drive with high performance and an electric auxiliary drive with low performance are used to drive an accessory. According to the invention, it is provided in the method that the auxiliary drive is connected with the output as a traction drive with low driving power requirements.

Beispielsweise bei Konstantfahrt in der Ebene im Stadtbereich oder bei geringen Geschwindigkeiten z. B. deutlich unter 60 km/h kann durch die Verwendung des Hilfsantriebes als Fahrantrieb ein besserer Wirkungsgrad und damit ein geringerer Verbrauch bei diesen Fahrleistungen realisiert werden. Dadurch, dass der Hilfsantrieb zum Antrieb des Nebenaggregates bereits im Antriebsstrang vorgesehen ist, entstehen auch keine Zusatzkosten für diese zusätzliche Möglichkeit des Fahrantriebes insbesondere bei geringen Fahrleistungen.For example, in constant driving in the plane in the city area or at low speeds z. B. well below 60 km / h can be realized by the use of the auxiliary drive as a drive better efficiency and thus a lower consumption in these performances. The fact that the auxiliary drive is already provided for driving the auxiliary unit in the drive train, there are no additional costs for this additional possibility of the drive especially at low mileages.

Im Rahmen einer vorteilhaften Ausführung der Erfindung kann vorgesehen sein, dass beispielsweise bei sehr geringen Fahrleistungsanforderungen der Hilfsantrieb sowohl für den Fahrantrieb als auch zum Antreiben des Nebenaggregates verwendet wird. Sollte sich dann z. B. die Fahrleistungsanforderung erhöhen, könnte zum Aufbringen der höheren Fahrleistung das Nebenaggregat wieder von dem Hilfsantrieb getrennt werden, um der gesteigerten Leistungsanforderung gerecht zu werden. Erst ab einem festzulegenden Grenzwert, ab dem z. B. die Leistungsgrenze des Hilfsantriebes erreicht wird, übernimmt der Fahrantrieb wieder den Antrieb des Elektrofahrzeuges. Um auch im Stillstand des Fahrzeuges den Antrieb des Nebenaggregates sicherzustellen, kann die Verbindung zwischen dem Hilfsantrieb und dem Abtrieb geöffnet werden. Auch bei sehr hohen Geschwindigkeiten, wenn eine Drehzahlgrenze der kleineren Elektromaschine beziehungsweise des Hilfsantriebes erreicht wird, kann die Verbindung zwischen dem Hilfsantrieb und dem Getriebe geöffnet werden, so dass der Nebenaggregate-Antrieb unabhängig vom Fahrantrieb durchgeführt wird.In the context of an advantageous embodiment of the invention can be provided that, for example, at very low driving performance requirements of the auxiliary drive is used both for the drive and for driving the accessory. Should then z. B. increase the driving performance requirement, the accessory could be separated from the auxiliary drive to apply the increased performance again to meet the increased power requirement. Only from a limit to be set, from the z. B. the power limit of the auxiliary drive is reached, the traction drive takes over again the drive of the electric vehicle. In order to ensure the drive of the auxiliary unit even when the vehicle is at a standstill, the connection between the auxiliary drive and the output can be opened. Even at very high speeds, when a speed limit of the smaller electric machine or the auxiliary drive is achieved, the connection between the auxiliary drive and the transmission can be opened, so that the auxiliary drive is performed independently of the drive.

Es ist auch möglich, dass in bestimmten Zwischenbereichen bei mittleren Fahrleistungsanforderungen, welche von der jeweiligen Leistungsauslegung bzw. -dimensionierung sowohl von der ersten als auch von der zweiten elektrischen Maschine bedient werden könnten, der Fahrantrieb und der Hilfsanträge gemeinsam zum Antrieb des Fahrzeuges verwendet werden, um den Gesamt-Wirkungsgrad zu optimieren.It is also possible that in certain intermediate ranges at average driving requirements, which could be served by the respective performance design or dimensioning of both the first and the second electric machine, the traction drive and the auxiliary applications are used together to drive the vehicle, to optimize the overall efficiency.

Vorzugsweise kann das erfindungsgemäß vorgeschlagene Verfahren bei dem ebenfalls vorgeschlagenen Antriebsstrang eingesetzt werden. Es sind jedoch auch andere Einsatzgebiete denkbar.Preferably, the method proposed according to the invention can be used in the likewise proposed drive train. However, other applications are conceivable.

Die vorliegende Erfindung wird anhand der Zeichnung weiter erläutert. Die einzige Figur der Erfindung zeigt eine schematische Ansicht einer möglichen Ausführungsvariante eines erfindungsgemäßen Antriebsstranges für ein Elektrofahrzeug.The present invention will be further explained with reference to the drawing. The single FIGURE of the invention shows a schematic view of a possible embodiment of a drive train according to the invention for an electric vehicle.

Der Antriebsstrang umfasst eine erste elektrische Maschine 1 als Fahrantrieb mit einer entsprechend der geforderten Antriebsleistung dimensionierten Leistungsfähigkeit. Die erste elektrische Maschine 1 ist über eine Getriebestufe beziehungsweise ein Getriebe 2 mit einer Übersetzung i_1 mit einem Differential 3 zum Antrieb der Antriebsräder 4 des Elektrofahrzeuges verbunden. Ferner weist der Antriebsstrang eine zweite elektrische Maschine 5 als Hilfsantrieb für ein Nebenaggregat, wie zum Beispiel ein Klimakompressor 6 auf. Die zweite elektrische Maschine 5 ist entsprechend der geforderten Antriebsleistung zum Antrieb des Nebenaggregats mit geringerer Leistungsfähigkeit als die erste elektrische Maschine 1 ausgelegt.The powertrain includes a first electric machine 1 as a traction drive with a capacity corresponding to the required drive power. The first electric machine 1 is via a gear stage or a transmission 2 with a translation i_1 with a differential 3 for driving the drive wheels 4 connected to the electric vehicle. Furthermore, the drive train has a second electrical machine 5 as an auxiliary drive for an auxiliary unit, such as an air conditioning compressor 6 on. The second electric machine 5 is according to the required drive power to drive the auxiliary unit with lower performance than the first electric machine 1 designed.

Erfindungsgemäß ist vorgesehen, dass die zweite elektrische Maschine 5 über eine Kupplungseinrichtung 7 mit dem Abtrieb beziehungsweise einer Getriebestufe oder einem Getriebe 8 mit der Übersetzung i_2 koppelbar ist. Ferner ist die zweite elektrische Maschine 5 über eine zweite Kupplungseinrichtung 9 mit dem Klimakompressor 6 koppelbar. Als Kupplungseinrichtungen 7, 9 sind ansteuerbare, reibschlüssige Lamellenkupplungen vorgesehen.According to the invention, it is provided that the second electrical machine 5 via a coupling device 7 with the output or a gear stage or a gearbox 8th can be coupled with the translation i_2. Further, the second electric machine 5 via a second coupling device 9 with the air conditioning compressor 6 coupled. As coupling devices 7 . 9 are controllable, frictional multi-plate clutches provided.

Der Fahrantrieb beziehungsweise die erste elektrische Maschine 1 und der Hilfsantrieb beziehungsweise die zweite elektrische Maschine 5 werden so dimensioniert und angeordnet sowie im Verbund betrieben, dass der Fahrantrieb jeweils mit der Maschine oder den Maschinen erfolgen kann, die für die vorliegenden Leistungsanforderungen den besten Wirkungsgrad erzielen.The drive or the first electric machine 1 and the auxiliary drive or the second electric machine 5 are dimensioned and arranged as well as operated in a network so that the drive can always be done with the machine or the machines that achieve the best efficiency for the present performance requirements.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
erste elektrische Maschinefirst electric machine
22
Getriebetransmission
33
Differentialdifferential
44
Antriebsräderdrive wheels
55
zweite elektrische Maschinesecond electric machine
66
Klimakompressorair compressor
77
erste Kupplungseinrichtungfirst coupling device
88th
Getriebetransmission
99
zweite Kupplungseinrichtungsecond coupling device
i_1i_1
Übersetzungtranslation
i_2i_2
Übersetzungtranslation

Claims (8)

Antriebsstrang für ein Elektrofahrzeug mit zumindest einer ersten elektrischen Maschine (1) als Fahrantrieb, die über ein Getriebe (2) mit dem Abtrieb gekoppelt ist, und mit zumindest einer zweiten elektrischen Maschine (5) als Hilfsantrieb für ein Nebenaggregat, dadurch gekennzeichnet, dass die zweite elektrische Maschine (5) über zumindest eine Kupplungseinrichtung (7) mit dem Abtrieb als Fahrantrieb koppelbar ist.Drive train for an electric vehicle with at least one first electric machine ( 1 ) as a traction drive, which via a transmission ( 2 ) is coupled to the output, and at least one second electrical machine ( 5 ) as an auxiliary drive for an auxiliary unit, characterized in that the second electrical machine ( 5 ) via at least one coupling device ( 7 ) can be coupled with the output as a drive. Antriebsstrang nach Anspruch 1, dadurch gekennzeichnet, dass zwischen der zweiten elektrischen Maschine (5) und einem mit dem Abtrieb verbundenen Getriebe (8) eine erste Kupplungseinrichtung (7) vorgesehen ist.Drive train according to claim 1, characterized in that between the second electrical machine ( 5 ) and a gear connected to the output ( 8th ) a first coupling device ( 7 ) is provided. Antriebsstrang nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen der zweiten elektrischen Maschine (5) und dem Nebenaggregat eine zweite Kupplungseinrichtung (9) vorgesehen ist.Drive train according to claim 1 or 2, characterized in that between the second electric machine ( 5 ) and the auxiliary unit, a second coupling device ( 9 ) is provided. Antriebsstrang nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass als Kupplungseinrichtungen (7, 9) jeweils eine ansteuerbare reibschlüssige Lamellenkupplung vorgesehen ist.Drive train according to claim 2 or 3, characterized in that as coupling devices ( 7 . 9 ) is provided in each case a controllable frictional multi-disc clutch. Antriebsstrang nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass als Nebenaggregat ein Klimakompressor (6) vorgesehen ist.Drive train according to one of the preceding claims, characterized in that the auxiliary unit is an air-conditioning compressor ( 6 ) is provided. Verfahren zum Ansteuern eines Antriebsstranges für ein Elektrofahrzeug, insbesondere nach einem der vorangehenden Ansprüche, wobei ein elektrischer Fahrantrieb mit hoher Leistungsfähigkeit und ein elektrischer Hilfsantrieb mit geringer Leistungsfähigkeit zum Antrieb eines Nebenaggregates eingesetzt werden, dadurch gekennzeichnet, dass der Hilfsantrieb bei geringen Fahrleistungsanforderungen mit dem Abtrieb als Fahrantrieb verbunden wird.A method for driving a drive train for an electric vehicle, in particular according to one of the preceding claims, wherein a high-performance electric traction drive and a low-power electric auxiliary drive Performance can be used to drive an auxiliary unit, characterized in that the auxiliary drive is connected with low output requirements with the output as a drive. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der als Fahrantrieb wirkende Hilfsantrieb bei sehr geringer Fahrleistungsanforderung gleichzeitig mit dem Nebenaggregat verbunden wird.A method according to claim 6, characterized in that the acting as a drive auxiliary drive is connected at very low driving power demand simultaneously with the auxiliary unit. Verfahren nach einem der Ansprüche 6 bis 7, dadurch gekennzeichnet, dass in einem Zwischenbereich bei mittlerer Fahrleistungsanforderung der Fahrantrieb und der Hilfsantrieb mit dem Abtrieb des Fahrzeuges verbunden werden.Method according to one of claims 6 to 7, characterized in that in an intermediate region at average driving power requirement of the traction drive and the auxiliary drive are connected to the output of the vehicle.
DE102010031156A 2010-07-09 2010-07-09 Power train for electric car, has electric machines respectively coupled as respective traction drives with translation parts over gear box and clutch unit, where one of electric machines is formed as auxiliary drive for auxiliary unit Withdrawn DE102010031156A1 (en)

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DE102010031156A DE102010031156A1 (en) 2010-07-09 2010-07-09 Power train for electric car, has electric machines respectively coupled as respective traction drives with translation parts over gear box and clutch unit, where one of electric machines is formed as auxiliary drive for auxiliary unit

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DE102010031156A DE102010031156A1 (en) 2010-07-09 2010-07-09 Power train for electric car, has electric machines respectively coupled as respective traction drives with translation parts over gear box and clutch unit, where one of electric machines is formed as auxiliary drive for auxiliary unit

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WO2013170848A1 (en) * 2012-05-16 2013-11-21 Technische Universität Chemnitz Drive system for motor vehicles
WO2018095628A1 (en) * 2016-11-22 2018-05-31 Robert Bosch Gmbh Method and device for reserve driving of a vehicle
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EP3590749A1 (en) * 2018-07-05 2020-01-08 Robert Bosch GmbH Electric drive system and method for operating same
US11897329B2 (en) 2018-08-10 2024-02-13 Schaeffler Technologies AG & Co. KG Electromechanical drive arrangement for a motor vehicle
US11850928B2 (en) 2018-09-19 2023-12-26 Zf Friedrichshafen Ag Electric drive axle for a vehicle
WO2020182933A1 (en) * 2019-03-12 2020-09-17 MULAG FAHRZEUGWERK Heinz Wössner GmbH & Co. KG Fully electric drive unit for a vehicle, in particular a self-propelling work machine, and procedure for operation thereof
WO2020187972A1 (en) * 2019-03-19 2020-09-24 Zf Friedrichshafen Ag Powertrain for a work machine, and work machine
WO2020197463A1 (en) * 2019-03-28 2020-10-01 Scania Cv Ab A powertrain for a vehicle, an all-electric vehicle, and a method of controlling a powertrain
DE102019214636A1 (en) * 2019-09-25 2021-03-25 Zf Friedrichshafen Ag Drive system for driving an auxiliary unit of a vehicle with an electric drive
WO2021187978A1 (en) * 2020-03-16 2021-09-23 Daf Trucks N.V. Power management system for electrical vehicles with multiple motors
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CN114506198A (en) * 2022-02-28 2022-05-17 蔚来动力科技(合肥)有限公司 Electric drive system for vehicle, control method thereof and vehicle
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