DE4401894A1 - Electric drive unit with differential gear - Google Patents

Electric drive unit with differential gear

Info

Publication number
DE4401894A1
DE4401894A1 DE4401894A DE4401894A DE4401894A1 DE 4401894 A1 DE4401894 A1 DE 4401894A1 DE 4401894 A DE4401894 A DE 4401894A DE 4401894 A DE4401894 A DE 4401894A DE 4401894 A1 DE4401894 A1 DE 4401894A1
Authority
DE
Germany
Prior art keywords
drive unit
electrical
motor housing
machines
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE4401894A
Other languages
German (de)
Inventor
Svein Hestevik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Priority to DE4401894A priority Critical patent/DE4401894A1/en
Publication of DE4401894A1 publication Critical patent/DE4401894A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • 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
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • 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
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • 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
    • B60L2220/10—Electrical machine types
    • B60L2220/12—Induction machines
    • 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
    • B60L2220/46—Wheel motors, i.e. motor connected to only one wheel
    • 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
    • B60L2220/50—Structural details of electrical machines
    • 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
    • B60L2240/10—Vehicle control parameters
    • B60L2240/26—Vehicle weight
    • 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
    • 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
    • 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
    • B60L2240/427—Voltage
    • 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
    • B60L2240/429—Current
    • 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
    • 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
    • B60L2240/50—Drive Train control parameters related to clutches
    • B60L2240/507—Operating parameters
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Retarders (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The electric drive unit has at least two electric machines (1,11). The motor housings (2,12) of the machines each have toothed rings (8,18). The rotors (3,13) of the machines (1,11) are each connected to spur wheels (7,17). The motor housings (2,12) and the rotors (3,13) rotate in opposite directions. The motor housing toothed rings (8,18) engage in a sun wheel (23). The axis of this wheel (23) forms the first drive shaft (24). The spur wheels (7,17) engage in an outer wheel (30) whose axis forms the second drive shaft (32).

Description

Die Erfindung bezieht sich auf eine elektrische Antriebs­ einheit mit Differentialgetriebe gemäß dem Oberbegriff des Anspruchs 1 und kann insbesondere bei spurgebundenen und nicht spurgebundenen Fahrzeugen sowie bei industriellen An­ wendungen eingesetzt werden. Der Einsatz bei industriellen Anwendungen ist interessant, wenn Differenzgeschwindigkei­ ten erzeugt werden sollen, beispielsweise zur Erzielung ei­ nes Bandzuges.The invention relates to an electric drive unit with differential gear according to the preamble of Claim 1 and can be particularly in the case of trackbound and non-track-bound vehicles as well as industrial applications applications are used. Use in industrial Applications is interesting when differential speed ten should be generated, for example to achieve egg band tension.

Bei elektrischen Straßenfahrzeugen ist es allgemein be­ kannt, das Drehmoment einer elektrischen Maschine über ein Differentialgetriebe auf die Antriebsräder zu leiten, wobei bei Einsatz einer Asynchronmaschine mit Kurzschlußläufer als Antriebsmaschine eine Umwandlung einer Batterie-Gleich­ spannung in eine dreiphasige Wechselspannung geeigneter Spannungsamplitude und Frequenz mittels eines Stromrichters erfolgt. Dabei ist es von Nachteil, daß bei einem Defekt der elektrischen Maschine oder des Stromrichters eine Wei­ terfahrt des Straßenfahrzeuges nicht mehr möglich ist, auch nicht im Notbetrieb mit verminderter Leistung. In electric road vehicles, it is generally knows the torque of an electrical machine via a To direct differential gear to the drive wheels, being when using an asynchronous machine with short-circuit rotor as a prime mover a conversion of a battery equal voltage into a three-phase AC voltage more suitable Voltage amplitude and frequency using a converter he follows. It is disadvantageous that in the event of a defect a white of the electrical machine or the converter Driving the road vehicle is no longer possible, too not in emergency operation with reduced performance.  

Der Erfindung liegt die Aufgabe zugrunde, eine elektrische Antriebseinheit mit Differentialgetriebe der eingangs ge­ nannten Art anzugeben, bei der die wesentlichen elektri­ schen Baukomponenten, wie elektrische Maschine und Strom­ richter, redudant ausgeführt sind.The invention has for its object an electrical Drive unit with differential gear of the beginning ge Specify named type in which the essential electrical components such as electrical machines and electricity judges, are executed redundantly.

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffes erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.This task is done in conjunction with the characteristics of Preamble according to the invention by the in the characteristic of Features specified claim 1 solved.

Die mit der Erfindung erzielbaren Vorteile bestehen insbe­ sondere darin, daß infolge der Aufteilung der Leistung des Straßenfahrzeuges in mindestens zwei elektrische Maschinen stets ein Notbetrieb mit verminderter Leistung möglich ist, falls eine der elektrischen Maschinen oder einer der spei­ senden Stromrichter defekt sind.The advantages which can be achieved with the invention are in particular special in that as a result of the division of the performance of the Road vehicle in at least two electrical machines emergency operation with reduced output is always possible, if one of the electrical machines or one of the spe send converter are defective.

Ein besonderer Vorteil der Erfindung ist es, daß die An­ triebseinheit gleichzeitig die Funktion eines Differential­ getriebes hat, d. h. ein zusätzliches, die Baulänge und das Gewicht der Antriebseinheit erhöhendes Differentialgetriebe zur Umlenkung der Momentenübertragung ist nicht notwendig. Dies führt zu einem sehr kompakten Aufbau, was insbesondere dann vorteilhaft ist, wenn die Antriebseinheit direkt zwi­ schen den Antriebsrädern eines Kraftfahrzeuges montiert ist. Da die Spurweite des Kraftfahrzeuges durch externe Forderungen festgelegt ist und diese Festlegung zusammen mit der Achskinematik (Raderhebungskurve und Elastokinema­ tik) eine Mindestlänge für die Antriebswellen erfordert, ist die Realisierung des kleinstmöglichen Abstandes zwi­ schen den Anschlußflanschen der Antriebseinheit sehr vor­ teilhaft. Es können relativ lange Antriebswellen verwendet werden, was vorteilhaft für die Achskinematik ist.A particular advantage of the invention is that the An drive unit simultaneously functions as a differential has gear, d. H. an additional, the overall length and that Differential gear increasing the weight of the drive unit it is not necessary to redirect the torque transmission. This leads to a very compact structure, which in particular is advantageous if the drive unit directly between rule the drive wheels of a motor vehicle is. Because the track width of the motor vehicle by external Claims is set and this setting together with the axis kinematics (wheel elevation curve and elastokinema tik) requires a minimum length for the drive shafts, is the realization of the smallest possible distance between rule the connecting flanges of the drive unit very much partial. Relatively long drive shafts can be used become what is advantageous for the axis kinematics.

Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Es zeigen: The invention is described below with reference to the drawing illustrated embodiments explained. Show it:  

Fig. 1 einen seitlichen Schnitt durch eine An­ triebseinheit, Fig. 1 shows a lateral section drive unit by An,

Fig. 2, 3, 4 Antriebseinheiten unterschiedlicher Lei­ stung. Fig. 2, 3, 4 drive units different Lei stung.

In Fig. 1 ist ein seitlicher Schnitt durch die Antriebs­ einheit dargestellt. Es ist eine elektrische Maschine 1, vorzugsweise eine Asynchronmaschine zu erkennen, mit einem Motorengehäuse 2 mit elektrischer Wicklung, vorzugsweise Drehstromwicklung, und mit einem Rotor 3, vorzugsweise Kurzschlußläufer, mit Rotorwelle 4. Die Rotorwelle 4 ist an ihren beiden Enden in Lagern 5, 6 gelagert und mit einem Stirnrad 7 mit Zahnkranz verbunden, wobei die Zähnezahl dieses Zahnkranzes mit D bezeichnet ist. Das Motorengehäuse 2 weist an seinem Außenumfang einen Zahnkranz 8 mit einer Zähnezahl C auf. Zur Lagerung des gegensinnig zum Rotor ro­ tierenden Motorengehäuses 2 mit Wicklung dient ein Lager 9. Die Zuführung der elektrischen Versorgungsspannung für die Wicklung erfolgt über Schleifringe 10.In Fig. 1 a lateral section through the drive unit is shown. An electrical machine 1 , preferably an asynchronous machine, can be seen, with a motor housing 2 with electrical winding, preferably three-phase winding, and with a rotor 3 , preferably short-circuit rotor, with rotor shaft 4 . The rotor shaft 4 is supported at its two ends in bearings 5 , 6 and connected to a spur gear 7 with a ring gear, the number of teeth of this ring gear being designated by D. The motor housing 2 has a ring gear 8 with a number of teeth C on its outer circumference. A bearing 9 serves to mount the motor housing 2 with winding in the opposite direction to the rotor. The electrical supply voltage for the winding is supplied via slip rings 10 .

In Fig. 1 ist eine weitere elektrische Maschine 11 zu er­ kennen, die gleichartig wie die elektrische Maschine 1 auf­ gebaut ist. Es sind das Motorengehäuse 12 mit elektrischer Wicklung, der Rotor 13, die Rotorwelle 14, die beiden Lager 15, 16 für die Rotorwelle, das Stirnrad 17 mit Zahnkranz (Zähnezahl D), der Zahnkranz 18 (Zähnezahl C), das Lager 19 und die Schleifringe 20 dargestellt.In Fig. 1, another electrical machine 11 is to be known, which is constructed in the same way as the electrical machine 1 . There are the motor housing 12 with electrical winding, the rotor 13 , the rotor shaft 14 , the two bearings 15 , 16 for the rotor shaft, the spur gear 17 with ring gear (number of teeth D), the ring gear 18 (number of teeth C), the bearing 19 and the Slip rings 20 shown.

Die Befestigung und Lagerung der elektrischen Maschinen 1 bzw. 11 erfolgt über Lagerschalen 21 bzw. 22. Beide Lager­ schalen 21, 22 sind mit dem Außengehäuse 26 der Antriebs­ einheit verbunden, wobei die Lagerschale 21 die Lager 5, 9 sowie die Lagerschale 22 die Lager 15, 19 trägt. Das Außen­ gehäuse 26 ist mit dem Fahrzeug verbunden. The electrical machines 1 and 11 are fastened and supported via bearing shells 21 and 22 . Both bearing shells 21 , 22 are connected to the outer housing 26 of the drive unit, the bearing shell 21 bearing 5 , 9 and bearing shell 22 bearing 15 , 19 . The outer housing 26 is connected to the vehicle.

Der Radantrieb auf der Antriebsseite I erfolgt über die Achse eines Sonnenrades 23, in das die Zahnkränze 8, 18 der Motorengehäuse 2, 12 eingreifen und das über seine An­ triebswelle 24 das Außengehäuse 26 durchstößt, wobei ein Lager 25 für die Lagerung vorgesehen ist. Die Zähnezahl des Sonnenrades 23 beträgt A. Über eine Kupplung 27 ist die An­ triebswelle 24 mit der ersten Radantriebswelle 28 verbind­ bar bzw. hiervon trennbar.The wheel drive on the drive side I takes place via the axis of a sun gear 23 , in which the ring gears 8 , 18 of the motor housing 2 , 12 engage and which drives through the drive shaft 24 to the outer housing 26 , with a bearing 25 being provided for storage. The number of teeth of the sun gear 23 is A. Via a clutch 27 , the drive shaft 24 is connectable to the first wheel drive shaft 28 or separable therefrom.

Der Radantrieb auf der Antriebsseite II erfolgt über ein Hohlrad 30 mit Innenzahnkranz 31, in den die Stirnräder 7, 17 der elektrischen Maschinen 1, 2 eingreifen und das über seine Antriebswelle 32 das Außengehäuse 26 durchstößt, wo­ bei ein Lager 33 für die Lagerung vorgesehen ist. Die Zäh­ nezahl des Innenzahnkranzes 31 des Hohlrades beträgt B. Über eine Kupplung 34 ist die Antriebswelle 32 mit der zweiten Radantriebswelle 35 verbindbar bzw. hiervon trenn­ bar.The wheel drive on the drive side II takes place via a ring gear 30 with an internal ring gear 31 , in which the spur gears 7 , 17 of the electrical machines 1 , 2 engage and which pierces the outer housing 26 via its drive shaft 32 , where a bearing 33 is provided for storage . The number of teeth of the internal ring gear 31 of the ring gear is B. Via a coupling 34 , the drive shaft 32 can be connected to the second wheel drive shaft 35 or can be separated therefrom.

Mit Ziffer 36 ist eine elektrische Anschlußleitung, vor­ zugsweise Drehstromleitung, bezeichnet, die durch die La­ gerschale 21 geführt ist und über Schleifkontakte 37 mit den Schleifringen 10 in Kontakt steht. In gleicher Art und Weise werden die Schleifringe 20 über Schleifkontakte 39 mit einer elektrischen Anschlußleitung 38 kontaktiert, wo­ bei die Anschlußleitung 38 durch die Lagerschale 22 geführt ist.With number 36 is an electrical connection line, preferably before three-phase line, which is guided through the La gerschale 21 and via sliding contacts 37 with the slip rings 10 in contact. In the same way, the slip rings 20 are contacted via sliding contacts 39 with an electrical connecting line 38 , where the connecting line 38 is guided through the bearing shell 22 .

Nachfolgend wird die Funktionsweise der Antriebseinheit be­ schrieben. Dabei ist davon auszugehen, daß jede elektrische Maschine 1, 11 über einen eigenen Stromrichter mit Dreh­ strom gewünschter Spannungshöhe und Frequenz beaufschlagt wird. Die Spannungsübertragung erfolgt über die elektri­ schen Anschlußleitungen, Schleifkontakte und Schleifringe zu den elektrischen Wicklungen in den Motorgehäusen. Diese Wicklungen sind jedoch nicht wie die Statorwicklung einer üblichen Kurzschlußläufer-Asynchronmaschine feststehend, sondern rotieren mit den Motorengehäusen, indem die Motor­ gehäuse-Zahnkränze 8, 18 in das Sonnenrad 23 eingreifen. Andererseits greifen die Stirnräder 7, 17 in den Hohl­ rad-Innenzahnkranz 31 ein. Bei gegensinniger Motorgehäu­ se/Rotor-Drehrichtung ergeben sich gleichsinnige Dreh­ richtungen von Sonnenrad 23 und Hohlrad 30 bzw. deren Ach­ sen.The operation of the drive unit will be described below. It can be assumed that each electrical machine 1 , 11 is supplied with its own power converter with three-phase current of the desired voltage level and frequency. The voltage is transmitted via the electrical connecting cables, sliding contacts and slip rings to the electrical windings in the motor housings. However, these windings are not stationary like the stator winding of a conventional squirrel-cage asynchronous machine, but instead rotate with the motor housings by engaging the motor housing ring gears 8 , 18 in the sun gear 23 . On the other hand, the spur gears 7 , 17 engage in the ring gear internal ring gear 31 . In the opposite direction motor housing / rotor direction of rotation results in the same direction of rotation of sun gear 23 and ring gear 30 or their axes sen.

Die Drehzahl n₂₃ des Sonnenrades verhält sich dabei zur Drehzahl n₂ des Motorgehäuses wie das Übersetzungsverhält­ nis C/A. Die Drehzahl n₃₀ des Hohlrades verhält sich zur Drehzahl n₃ des Rotors wie das Übersetzungsverhältnis D/B.The speed n₂₃ of the sun gear relates to Speed n₂ of the motor housing as the gear ratio nis C / A. The speed n₃₀ of the ring gear relates to Speed n₃ of the rotor as the gear ratio D / B.

Bei Normalbetrieb (keine Kurvenfahrt des Fahrzeugs, kein Durchdrehen eines Antriebsrads) entsprechen sich die Dreh­ zahlen n₂₃ und n₃₀, d. h. die Übersetzungsverhältnisse c/A und D/B sind gleich auszuführen. Durch geeignete konstruk­ tive Wahl der Zähnezahlen A, B, C, D kann insbesondere festgelegt werden, wie sich die Drehzahlen n₂ und n₃ der elektrischen Maschinen im Normalbetrieb verhalten. Vorteil­ haft werden die Zähnezahlen A, B, C, D derart festgelegt, daß die Drehzahl n₃ des Rotors im Normalbetrieb höher als die Drehzahl n₂ des Motorgehäuses ist.During normal operation (no cornering of the vehicle, no Spinning a drive wheel) the rotation corresponds pay n₂₃ and n₃₀, d. H. the gear ratios c / A and D / B are to be executed in the same way. Through suitable construct tive choice of the number of teeth A, B, C, D can in particular be determined how the speeds n₂ and n₃ the electrical machines behave in normal operation. Advantage the number of teeth A, B, C, D are determined in such a way that the speed n₃ of the rotor in normal operation is higher than the speed n₂ of the motor housing is.

Bei Kurvenfahrt des Fahrzeuges wirkt die Antriebseinheit gleichzeitig als Differentialgetriebe, was den Vorteil hat, daß kein weiteres Ausgleichsgetriebe mit zusätzlichem Raum­ bedarf und zusätzlichem Gewicht notwendig ist. Durch das Differentialgetriebe werden Drehzahldifferenzen zwischen den in einer Richtung drehenden Antriebsrädern - d. h. Dif­ ferenzen zwischen n₂₃ und n₃₀ - ermöglicht, wenn z. B. unterschiedliche Momentenverhältnisse an den Antriebsrädern gegeben sind oder Kurvenfahrt vorliegt. The drive unit acts when the vehicle is cornering at the same time as a differential gear, which has the advantage that no further differential gear with additional space needs and additional weight is necessary. By the Differential gears are speed differences between the unidirectional drive wheels - d. H. Dif ferences between n₂₃ and n₃₀ - allows if z. B. different torque ratios on the drive wheels are given or cornering.  

Die beiden Kupplungen 27, 34 ermöglichen eine Unterbrechung des Kraftschlusses zwischen Antriebsrädern und Antriebsein­ heit, um die bei rotierenden elektrischen Maschinen und ro­ tierendem Sonnenrad 20 und Hohlrad 30 vorhandene kinetische Energie zu erhalten. Eine derartige Trennung des Kraft­ schlusses kann beispielsweise vorteilhaft beim Bremsen, bei Bergabfahrt des Fahrzeuges oder bei Stillstand vor einer Ampelanlage erfolgen.The two clutches 27 , 34 allow an interruption of the frictional connection between the drive wheels and Antriebsein unit in order to obtain the kinetic energy present in rotating electrical machines and ro tierend sun gear 20 and ring gear 30 . Such a separation of the power circuit can, for example, advantageously take place when braking, when driving downhill or when the vehicle is stationary in front of a traffic light system.

In den Fig. 2 bis 4 sind Antriebseinheiten unterschied­ licher Leistungsklassen dargestellt. Bei der Antriebsein­ heit gemäß Fig. 2 handelt es sich um eine leistungsschwä­ chere Ausführungsform mit lediglich zwei elektrischen Ma­ schinen 1, 11, wie sie auch in Fig. 1 detailliert beschrie­ ben ist. In der gezeigten Sicht auf die erste Antriebsseite sind das Sonnenrad 23, die Antriebswelle 24 und das Außen­ gehäuse 26 lediglich schematisch dargestellt.In Figs. 2 to 4 are drive units Licher different power classes shown. In the Antriebsein integrated as shown in FIG. 2 is a leistungsschwä chere embodiment with only two electrical Ma machines 1, 11, as beschrie detail also in Fig. 1 is ben. In the view shown on the first drive side, the sun gear 23 , the drive shaft 24 and the outer housing 26 are only shown schematically.

Bei der Antriebseinheit gemäß Fig. 2 handelt es sich um eine Ausführungsform mittlerer Leistung mit vier elektri­ schen Maschinen 1, 11, 40, 41, wobei alle elektrischen Ma­ schinen symmetrisch um das Sonnenrad 23 angeordnet sind. In Fig. 4 ist eine leistungsstarke Ausführungsform einer An­ triebseinheit dargestellt, wobei sechs elektrische Maschi­ nen 1, 11, 40, 41, 42, 43 in symmetrischer Art und Weise um das Sonnenrad 23 gruppiert sind. Aus den Fig. 3 und 4 geht klar hervor, daß die in den Fig. 1 und 2 behandelte Grundform der Antriebseinheit mit zwei elektrischen Maschi­ nen in einfacher Weise "baukastenförmig" erweiterbar ist, indem je nach gewünschter Leistungsklasse weitere elektri­ sche Maschinen hinzugefügt werden. Sonnenrad, Hohlrad und Außengehäuse bleiben dabei unverändert. Besonders vorteil­ haft ist es dabei, daß die Baukomponenten der Antriebsein­ heit universell für unterschiedliche Leistungsklassen gleich sind, was Preisvorteile bei der Fertigung durch hö­ here Stückzahlen und Vorteile bei der Ersatzteilbevorratung hat. Zur Leistungserhöhung werden lediglich weitere elek­ trische Maschinen inklusive Stirnräder und Lagerschalen eingesetzt.In the drive unit of Fig. 2 is an embodiment with four medium power electrical rule machines 1, 11, 40, 41, with all the electrical machines Ma are symmetrically arranged around the sun gear 23. In Fig. 4, a powerful embodiment of a drive unit is shown, with six electrical machines NEN 1 , 11 , 40 , 41 , 42 , 43 are grouped around the sun gear 23 in a symmetrical manner. From Figs. 3 and 4, it is clear that the treated in Figs. 1 and 2 basic shape of the drive unit with two electrical Maschi nen in a simple manner is "modular-shaped" expandable by adding depending on the desired performance class more electrical specific machines. The sun gear, ring gear and outer housing remain unchanged. It is particularly advantageous that the components of the drive unit are universally the same for different performance classes, which has price advantages in production due to higher quantities and advantages in the provision of spare parts. Only additional electrical machines including spur gears and bearing shells are used to increase performance.

Diese Vorteile sind auch hinsichtlich der Stromrichter gül­ tig. Da jede der elektrischen Maschinen von einem eigenen Stromrichter gespeist wird, ist universell für unterschied­ liche Leistungsklassen lediglich ein Stromrichtertyp zu entwickeln, zu fertigen und zu bevorraten.These advantages are also valid with regard to the converter tig. Because each of the electrical machines has its own Power converter is universal for difference only one converter type develop, manufacture and stockpile.

Claims (7)

1. Elektrische Antriebseinheit mit Differentialge­ triebe, gekennzeichnet durch mindestens zwei elektrische Maschinen (1, 11), deren Motorengehäuse (2, 12) jeweils mit Zahnkränzen (8, 18) versehen und deren Rotoren (3, 13) je­ weils mit Stirnrädern (7, 17) verbunden sind, wobei Motoren­ gehäuse (2, 12) und Rotoren (3, 13) gegensinnig rotieren, in­ dem die Motorgehäuse-Zahnkränze (8, 18) in ein Sonnenrad (23) eingreifen, dessen Achse die erste Antriebswelle (24) bildet und indem die Stirnräder (7, 17) in ein Hohlrad (30) eingreifen, dessen Achse die zweite Antriebswelle (32) bil­ det.1. Electric drive unit with differential gear, characterized by at least two electrical machines ( 1 , 11 ), the motor housing ( 2 , 12 ) each with sprockets ( 8 , 18 ) and the rotors ( 3 , 13 ) each with spur gears ( 7 , 17 ) are connected, the motor housing ( 2 , 12 ) and rotors ( 3 , 13 ) rotating in opposite directions, in which the motor housing sprockets ( 8 , 18 ) engage in a sun gear ( 23 ), the axis of which drives the first drive shaft ( 24 ) forms and by the spur gears ( 7 , 17 ) engage in a ring gear ( 30 ), the axis of which detects the second drive shaft ( 32 ). 2. Antriebseinheit nach Anspruch 1, dadurch gekenn­ zeichnet, daß für jede elektrische Maschine (1) eine Lager­ schale (21, 22) vorgesehen ist, die sowohl ein Lager (5, 15) für die Rotorwelle (4, 14) als auch ein Lager (9, 19) für das Motorengehäuse (2, 12) trägt.2. Drive unit according to claim 1, characterized in that for each electrical machine ( 1 ) a bearing shell ( 21 , 22 ) is provided, both a bearing ( 5 , 15 ) for the rotor shaft ( 4 , 14 ) and a Bearing ( 9 , 19 ) for the motor housing ( 2 , 12 ) carries. 3. Antriebseinheit nach Anspruch 2, dadurch gekenn­ zeichnet, daß elektrische Anschlußleitungen (36, 38) für die elektrischen Wicklungen der Maschinen (1, 11) durch die La­ gerschalen (21, 22) geführt sind und Schleifring/Schleifkon­ takt-Anordnungen (10/37, 20/39) innerhalb der Maschinen (1, 11) die elektrische Energieübertragung bewirken.3. Drive unit according to claim 2, characterized in that electrical connecting lines ( 36 , 38 ) for the electrical windings of the machines ( 1 , 11 ) through the La gerschalen ( 21 , 22 ) are guided and slip ring / Schleifkon tact arrangements ( 10th / 37 , 20/39 ) within the machines ( 1 , 11 ) effect the electrical energy transfer. 4. Antriebseinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kraftschluß zwischen den Antriebswellen (24, 32) und externen Antriebswellen, insbe­ sondere Radantriebswellen (28, 35) mittels Kupplungen (27, 34) trennbar ist. 4. Drive unit according to one of claims 1 to 3, characterized in that the frictional connection between the drive shafts ( 24 , 32 ) and external drive shafts, in particular special wheel drive shafts ( 28 , 35 ) by means of couplings ( 27 , 34 ) can be separated. 5. Antriebseinheit nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Zähnezahlen (A, B, C, D) des Sonnenrades (23), des Hohlrades (30), des Motorgehäu­ ses-Zahnkranzes (8, 18) und des Stirnrades (7, 17) derart ge­ wählt sind, daß die Drehzahl (n₃) des Rotors (3, 13) im Nor­ malbetrieb höher als die Drehzahl (n₂) des Motorgehäuses (2, 12) ist.5. Drive unit according to one of claims 1 to 4, characterized in that the number of teeth (A, B, C, D) of the sun gear ( 23 ), the ring gear ( 30 ), the motor housing ses ring gear ( 8 , 18 ) and Spur gear ( 7 , 17 ) are selected such that the speed (n₃) of the rotor ( 3 , 13 ) in normal operation is higher than the speed (n₂) of the motor housing ( 2 , 12 ). 6. Antriebseinheit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß vier elektrische Maschinen (1, 11, 40, 41) vorgesehen sind.6. Drive unit according to one of claims 1 to 5, characterized in that four electrical machines ( 1 , 11 , 40 , 41 ) are provided. 7. Antriebseinheit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sechs elektrische Maschinen (1, 11, 40, 41, 42, 43) vorgesehen sind.7. Drive unit according to one of claims 1 to 5, characterized in that six electrical machines ( 1 , 11 , 40 , 41 , 42 , 43 ) are provided.
DE4401894A 1994-01-24 1994-01-24 Electric drive unit with differential gear Withdrawn DE4401894A1 (en)

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Publication number Priority date Publication date Assignee Title
EP1642759A1 (en) * 2004-09-08 2006-04-05 Yang Tai-Her Electrical drive system with double acting type electric motors and differential
DE102005023032A1 (en) * 2005-05-13 2006-11-23 Demag Ergotech Gmbh Electric drive device
WO2007061497A1 (en) * 2005-11-23 2007-05-31 Caterpillar Inc. Electric drive system with plural motors
US20140159523A1 (en) * 2012-12-11 2014-06-12 Jui-An Tsai Work output device

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Publication number Priority date Publication date Assignee Title
DE239660C (en) *
DE856309C (en) * 1950-08-13 1952-11-20 Steinbock G M B H With its two axial ends for driving rotating parts that are not rigidly coupled, especially vehicle wheels, an electric motor
US2763823A (en) * 1951-07-14 1956-09-18 New Cons Gold Fields Ltd Plural electric motor variable speed drive
DE925570C (en) * 1952-03-21 1955-03-24 Erwin Krauskopf Electric torque converter for motor vehicles
DE2343029B2 (en) * 1973-08-25 1976-03-25 Fisiko-energetitscheskij institut Akademii Nauk Latwijskoj SSR, Riga (Sowjetunion) TWO SPEED DRIVE WITH AN ASYNCHRONOUS MOTOR
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1642759A1 (en) * 2004-09-08 2006-04-05 Yang Tai-Her Electrical drive system with double acting type electric motors and differential
EP2196345A1 (en) * 2004-09-08 2010-06-16 Tai-Her Yang Electrical drive system with double acting type electric motors and differential
DE102005023032A1 (en) * 2005-05-13 2006-11-23 Demag Ergotech Gmbh Electric drive device
WO2007061497A1 (en) * 2005-11-23 2007-05-31 Caterpillar Inc. Electric drive system with plural motors
US7309300B2 (en) 2005-11-23 2007-12-18 Caterpillar Inc. Electric drive system with plural motors
CN101312870B (en) * 2005-11-23 2011-09-07 卡特彼勒公司 Electric drive system with plural motors
JP4843050B2 (en) * 2005-11-23 2011-12-21 キャタピラー インコーポレイテッド Electric drive system with multiple motors
US20140159523A1 (en) * 2012-12-11 2014-06-12 Jui-An Tsai Work output device
US9197111B2 (en) * 2012-12-11 2015-11-24 Jui-An Tsai Work output device

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