WO2006092122A1 - Hybrid drive - Google Patents

Hybrid drive Download PDF

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Publication number
WO2006092122A1
WO2006092122A1 PCT/DE2006/000350 DE2006000350W WO2006092122A1 WO 2006092122 A1 WO2006092122 A1 WO 2006092122A1 DE 2006000350 W DE2006000350 W DE 2006000350W WO 2006092122 A1 WO2006092122 A1 WO 2006092122A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
drive shaft
drive
rotor
gear
Prior art date
Application number
PCT/DE2006/000350
Other languages
German (de)
French (fr)
Inventor
Rolf Ziegler
Original Assignee
Rolf Ziegler
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 Rolf Ziegler filed Critical Rolf Ziegler
Publication of WO2006092122A1 publication Critical patent/WO2006092122A1/en

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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
    • 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
    • B60K6/26—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 motors or the generators
    • 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
    • B60K6/36—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 transmission gearings
    • B60K6/365—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 transmission gearings with the gears having orbital motion
    • 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
    • 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
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • 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
    • B60K6/44—Series-parallel type
    • B60K6/448—Electrical distribution type
    • 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
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
    • F16H2037/102—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts the input or output shaft of the transmission is connected or connectable to two or more differentials
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the invention relates to a hybrid drive, in particular for a motor vehicle, which includes at least one electric motor and a superposition gear, which are arranged coaxially to each other, according to the preamble of independent claim.
  • DE 195 39 571 C2 describes a hybrid drive for a motor vehicle which contains an internal combustion engine and an electric motor whose drive power can be transmitted to a drive axle of the vehicle via an automatic transmission.
  • the electric motor includes a rotatably connected to a first drive shaft primary rotor and a rotatable independent of the primary rotor secondary rotor, which is rotatably connected to a second drive shaft.
  • the two drive shafts have a common axis of rotation.
  • the internal combustion engine and the automatic transmission are arranged coaxially with the axis of rotation.
  • the primary rotor and the secondary rotor of the electric motor are axially movable relative to each other to form a lock-up clutch.
  • the opening of the lock-up clutch is made by electrical excitation and the closing by non-excitation of the secondary rotor. Upon excitation of the secondary rotor, this is displaced axially against the force of a spring element. at a simultaneous operation of the internal combustion engine and the electric motor, the electric motor must also be able to transmit the power of the internal combustion engine.
  • DE 196 06 771 A1 discloses a hybrid drive for motor vehicles is described, which includes an internal combustion engine and a connected to the engine via a clutch, combined from electric motors and a superposition gear continuously variable transmission.
  • One of the electric motors is in drive connection with a reaction shaft and the other electric motor is connected to the input shaft or the output shaft of the superposition gear
  • a two-stage transmission gear is arranged, which has two drive shafts.
  • the superposition gear is divided into a first and a second superposition gear different ratio, which are each connected to one of the two output shafts of the transmission gear.
  • the internal combustion engine, the electric motors and the various gears are arranged coaxially.
  • the arrangement increases the usable transmission spread and reduces the transmitted electrical power.
  • a transmission for hybrid vehicles which has two planetary gear, whose ring gears are connected by means of a ring gear with the crankshaft of an internal combustion engine.
  • Each planetary gear is coupled to a respective electric motor and a respective transmission shaft, on which input gears for different transmission ratios are arranged.
  • Driving is a bridging of the electric motor and / or the planetary gear provided.
  • a gear pair can be used, which connects the input shaft and a transmission shaft with each other.
  • the combustion engine, the at least one electric motor and the two planetary gears are arranged coaxially.
  • EP 0 791 495 A2 describes a hybrid drive for a motor vehicle, which has an internal combustion engine, a first electric motor and a superposition motor. includes gearbox, which are arranged coaxially. The first electric motor at least partially encloses the planetary gear. Between the planetary gear and the internal combustion engine, a second electric motor is arranged, which is operated as a generator.
  • the superposition gear is realized as a planetary gear, wherein the internal combustion engine via a first drive shaft to the planet carrier, the first electric motor via a second drive shaft to the ring gear and the second electric motor is indirectly connected via an output shaft with the sun gear of the planetary gear.
  • a hybrid drive for a motor vehicle which in addition to an internal combustion engine has two electric motors and a planetary gear, which are each arranged coaxially with one another.
  • the drive shaft of the internal combustion engine is connected to a first and second clutch.
  • the first clutch may connect the drive shaft of the internal combustion engine to a rotor of a first electric motor
  • the second clutch may connect the drive shaft of the internal combustion engine to a stator of the first electric motor.
  • At least one clutch must be actuated in order to connect the drive shaft of the internal combustion engine with a component of the electric motor.
  • a direct connection of the drive shaft with the planetary gear is not provided.
  • the invention has for its object to provide a compact hybrid drive, in particular for a motor vehicle.
  • the hybrid drive according to the invention provides at least a first electric motor and a superposition gear, which are arranged coaxially.
  • An internal combustion engine is directly and positively connected via a first drive shaft connected to the superposition gearbox.
  • the first electric motor via a second drive shaft is directly and positively connected to the superposition gear.
  • a first rotor of the first electric motor is directly and positively connected to the first drive shaft of the internal combustion engine.
  • the coaxial arrangement of the first electric motor and the superposition gear leads to a compact design of the hybrid drive.
  • the direct and positive connection of the first rotor of the first electric motor with the first drive shaft of the internal combustion engine minimizes the required
  • the hybrid drive according to the invention makes it possible to provide a variable speed on the output shaft of the superposition gearing, which can be connected for example to a known transmission of a motor vehicle.
  • the at least one first electric motor can be operated both as a drive motor and as a generator, so that the hybrid drive according to the invention enables a regeneration of braking energy into a battery.
  • the torque distribution between the engine and the at least one electric motor can be determined by the gear ratio of the superposition gear.
  • the gear ratio also defines the speed ratio between the drives.
  • a first embodiment provides that the electric motor between the engine and the superposition gear is arranged. This measure ensures that after the output shaft of the superposition bes no further drive must be arranged so that the output shaft of the superposition gearing can be directly connected to other components, such as a manual or automatic transmission of a motor vehicle.
  • An embodiment provides that at least a second electric motor surrounds the first drive shaft.
  • no additional drive shaft is required for the second electric motor.
  • the first rotor of the second electric motor interacts with a second rotor, which is arranged, for example, on a drive housing.
  • the second rotor becomes a stator.
  • the second electric motor enables a dual operation in which, for example, the first electric motor is operated as a drive motor and the second electric motor as a generator.
  • a particularly advantageous embodiment provides that the first electric motor is arranged in a recess of the first drive shaft.
  • the arrangement of the first electric motor in the recess of the first drive shaft of the internal combustion engine, a particularly compact design of the hybrid drive according to the invention is possible.
  • the first drive shaft has a widening, which allows the realization of the at least one first electric motor with the required size for providing the required torque.
  • the superposition gear is realized as a planetary gear.
  • the first drive shaft is connected to the ring gear and the second drive shaft is connected to the sun gear of the planetary gear. This configuration makes it possible for the second drive shaft of the first electric motor to be guided within the first drive shaft of the internal combustion engine and directly connected to the engine
  • Sun wheel can be connected.
  • the first rotor of the first electric motor as a rotor and a second rotor of the first electric motor as Er- is educated. Due to the direct and positive connection of the first rotor of the first electric motor with the first drive shaft, the first electric motor in drive and brake operation relative to a drive housing only rotating components, so that the components instead of a stator and rotor are referred to with first and second rotor.
  • a development of the hybrid drive according to the invention provides a coupling for connecting the first drive shaft with the second drive shaft for bridging the electric motor.
  • the second drive shaft can also engage in the event of a defect, in particular of the first electric motor
  • the at least one first electric motor has a plurality of first rotors in the radial direction, which interact with a corresponding number of second rotors.
  • the further development makes it possible to increase the area available for the magnetic flux between the two rotors and a corresponding increase in the volume with which a magnetic saturation of the material can be counteracted given a required high drive power.
  • Figure 1 shows a simplified sectional view through a hybrid drive according to the invention and Figure 2 shows a simplified sectional view through an electric motor of the hybrid drive. Description of the embodiments
  • FIG. 1 shows an internal combustion engine 10, which is connected directly and positively to a ring gear 12 of a planetary gear 13 via a first drive shaft 11.
  • the drive shaft 11 includes a recess 14, on the inside of which a first rotor 15 of a first electric motor 16 is arranged.
  • a second rotor 17 of the first electric motor 16 is connected via a second drive shaft 18 directly and positively to the sun gear 19 of the planetary gear 13.
  • the second drive shaft 18 is mounted within the first drive shaft 11 with a first to third drive shaft bearing 20, 21, 22.
  • the first electric motor 16 is connected via a coupling 23 with the first drive shaft 11.
  • a first rotor 24 of a second electric motor 25 is arranged, which cooperates with a second rotor 26 which is arranged on a drive housing 27.
  • the first drive shaft 11 is supported with a fourth, fifth and sixth drive shaft bearing 28, 29, 30 against the drive housing 27.
  • the planet gears 31, 32 are mounted with first to fourth planet bearings 33, 34, 35, 36 on a planet carrier 37, which is connected to a first output shaft 38.
  • a second output shaft 39 connected to the sun gear 19 is mounted with a seventh and eighth drive shaft bearing 40, 41.
  • FIG. 2 shows an alternative construction of the first electric motor 16. Those parts shown in FIG. 2 that correspond to the parts shown in FIG. 1 bear the same reference numerals.
  • the first drive shaft 11 has a first rotor carrier 50 and the second drive shaft 18 has a second rotor carrier 51.
  • On the first rotor carrier 50 is a third rotor 52, which cooperates with a second rotor carrier 51 arranged on the fourth rotor 53.
  • the hybrid drive according to the invention operates as follows:
  • the planetary gear 13 is generally a superposition gear, which is respectively connected directly and positively to the first drive shaft 11 and the second drive shaft 18, wherein the two drive shafts 11, 18 both arbitrary speeds and both directions of rotation may have. An excess torque will be at the first
  • Output shaft 38 of the superposition gear 13 is provided, which can be used to drive a motor vehicle not shown in detail.
  • the first output shaft 38 is preferably connected to a further gear, not shown in greater detail, in order to be able to cover a wide transmission range.
  • the superposition gear is realized as a planetary gear 13.
  • a compact design of the hybrid drive is already obtained in that both the first electric motor 16 and the planetary gear 13 are arranged coaxially. Furthermore, the first drive shaft 11 with the internal combustion engine 10 is expediently arranged coaxially to the first electric motor 16 and to the planetary gear 13. A compact design and a high overall efficiency of the hybrid drive will be Furthermore, obtained by a rotor of the electric motor with the first drive shaft 11 is positively connected and thus rotatably connected. In the exemplary embodiment shown, the first rotor 15 of the first electric motor 16 is connected to the first drive shaft 11. Furthermore, the first rotor 24 of the second electric motor 25 is connected to the first drive shaft 11 in a form-fitting manner and thus in a rotationally fixed manner.
  • the first electric motor 16 is mainly used as a drive electric motor, while the second electric motor 25 is mainly operated as a generator. In principle, it is possible to operate the electric motors 16, 25 independently of one another as drive motors or as generators.
  • the essential parts of the electric motors 16, 25 are each referred to as rotors. Both parts of the first electric motor 16 may be rotatable relative to the drive housing 27.
  • the first rotor 15 of the first electric motor 16 is designed, for example, as a conventional rotor and the second rotor 17 of the first electric motor 16 as a conventional stator.
  • the second rotor 17 can be realized in the simplest case with permanent magnets.
  • a field winding is provided, which allows the specification of a variable magnetic flux.
  • the first rotor 24 of the second electric motor 25 also always performs a rotational movement with respect to the drive housing 27.
  • the second rotor 26 of the second electric motor 25 is fixedly connected to the drive housing 27 in the embodiment shown.
  • the second rotor 26 is still referred to as a rotor for consistency.
  • the first rotor 24 of the second electric motor 25 can also be realized in the simplest case with permanent magnets.
  • an excitation winding is also provided here, which allows the specification of a variable magnetic flux.
  • the required power supply to the rotors 15, 17, 24, 26 of the electric motors 16, 25 are made for example via slip rings, which are not shown in detail.
  • the second drive shaft 18 mounted with the first to third drive shaft bearings 20, 21, 22 in the first drive shaft 11 may have any relative rotational speed and direction of rotation relative to the first drive shaft 11.
  • a speed ratio which is given by the gear ratio of the planetary gear 13.
  • Speed of 2000 rev / min and a left-rotating second drive shaft 18 of 8000 rev / min is the first output shaft 38.
  • the first output shaft 38 has a speed of 2000 rpm.
  • a first drive shaft 11 rotates clockwise at a speed of 2000 rpm and a right-rotating second drive shaft 18 has a speed of 3000 rpm
  • the first output shaft 38 has a speed of 4000 rpm.
  • Gear ratio of the planetary gear 13 If, for example, a gear ratio of 1: 4 is assumed, the second drive shaft 18 of the electric motors 16, 25 at a predetermined total drive power of, for example, 100 KW apply only 25 KW. Since the speeds as the gear ratio of Behave planetary gear 13, for example, at a standstill of the first output shaft 38 and a speed of the first drive shaft 11 of the engine 10, for example, 4000 rev / min, the second Output shaft 18 of the electric motors 16, 25 have a speed of 16,000 rev / min.
  • the second electric motor 25 is operated, for example, as a generator. In this operating state, the second electric motor 25 can provide the exciting current of the first electric motor 16. Furthermore, a braking torque can be applied by the generator operation. The current provided in the generator mode can be used to charge a battery not shown in detail.
  • the first drive shaft 11 of the internal combustion engine 10 by means of the clutch 23 directly to the second drive shaft 18 are rotatably connected.
  • the coupling 42 may be provided, which rotatably connects the first drive shaft 11 of the internal combustion engine 10 with the drive housing 27.
  • the second output shaft 39 which is connected to the sun gear 19 of the planetary gear 13, which is mounted with the seventh and eighth drive shaft bearings 40, 41 within the first output shaft 38, can be used to drive a unit not shown in detail.
  • a high power density of the electric motors 16, 25 is achieved when the air gaps between the rotors 15, 17; 24, 26 are as small as possible. Furthermore, as large an area as possible for the magnetic flux should be available so that the materials used are not strained to the magnetic saturation limit.
  • FIG. 2 shows a particularly advantageous embodiment of at least the first electric motor 16.
  • the first electric motor 16 has several Rotor pairs 15, 17; 52, 53 on.
  • the additional rotors 52, 53 are arranged on the rotor carriers 50, 51.
  • the first drive shaft 11 includes, for example, the first rotor carrier 50 and the second drive shaft 18 includes, for example, the second rotor carrier 51.
  • the first rotor 15 with the first drive shaft 11 positively and thus rotatably connected acts with the second rotor carrier 51 on the form-fitting and thus rotatably mounted second rotor 17 together.
  • the third rotor 52 which is arranged in a form-fitting manner and thus rotationally fixed on the first rotor carrier 50, interacts with the fourth rotor 53 arranged in a form-fitting manner and thus non-rotatably mounted on the second rotor carrier 51.
  • the second electric motor 25 may also have further rotor pairs.

Abstract

The invention relates to a hybrid drive, particularly for a motor vehicle, which contains at least one first electric motor (16) and a differential drive (13) that are coaxially arranged. An internal combustion engine (10) is connected to the differential drive (13) via a first drive shaft (11), and the first electric motor (16) is connected to the differential drive (13) via a second drive shaft (18). The first rotor (15) of the at least one first electric motor (16) is connected to the first drive shaft (11) in a rotationally fixed manner. One design provides that the at least one first electric motor (16) is placed in a recess (14) of the drive shaft (11) that optionally has an enlargement. The inventive hybrid drive makes a compact design possible that has few components and enables a high level of efficiency to be achieved.

Description

Hybridantriebhybrid drive
Stand der TechnikState of the art
Die Erfindung geht aus von einem Hybridantrieb, insbesondere für ein Kraftfahrzeug, der wenigstens einen Elektromotor sowie ein Überlagerungsgetriebe enthält, die koaxial zueinander angeordnet sind, nach der Gattung des unabhängi- gen Anspruchs.The invention relates to a hybrid drive, in particular for a motor vehicle, which includes at least one electric motor and a superposition gear, which are arranged coaxially to each other, according to the preamble of independent claim.
In der DE 195 39 571 C2 ist ein Hybridantrieb für ein Kraftfahrzeug beschrieben, der einen Verbrennungsmotor sowie einen Elektromotor enthält, deren Antriebsleistung über ein Automatikgetriebe auf eine Antriebsachse des Fahrzeugs über- tragbar ist. Der Elektromotor enthält einen drehfest mit einer ersten Antriebswelle verbundenen Primärrotor und einen unabhängig vom Primärrotor drehbaren Sekundärrotor, der drehfest mit einer zweiten Antriebswelle verbunden ist. Die beiden Antriebswellen weisen eine gemeinsame Drehachse auf. Der Verbrennungsmotor und das Automatikgetriebe sind koaxial zur Drehachse angeordnet. Der Primärrotor und der Sekundärrotor des Elektromotors sind zur Ausbildung einer Überbrückungskupplung zueinander axial beweglich angeordnet. Das Öffnen der Überbrückungskupplung erfolgt durch elektrische Erregung und das Schließen durch Nichterregung des Sekundärrotors. Bei Erregung des Sekundärrotors wird dieser axial gegen die Kraft eines Federelements verlagert. Bei einem gleichzeitigen Betrieb des Verbrennungsmotors und des Elektromotors muss der Elektromotor zusätzlich die Leistung des Verbrennungsmotors übertragen können.DE 195 39 571 C2 describes a hybrid drive for a motor vehicle which contains an internal combustion engine and an electric motor whose drive power can be transmitted to a drive axle of the vehicle via an automatic transmission. The electric motor includes a rotatably connected to a first drive shaft primary rotor and a rotatable independent of the primary rotor secondary rotor, which is rotatably connected to a second drive shaft. The two drive shafts have a common axis of rotation. The internal combustion engine and the automatic transmission are arranged coaxially with the axis of rotation. The primary rotor and the secondary rotor of the electric motor are axially movable relative to each other to form a lock-up clutch. The opening of the lock-up clutch is made by electrical excitation and the closing by non-excitation of the secondary rotor. Upon excitation of the secondary rotor, this is displaced axially against the force of a spring element. at a simultaneous operation of the internal combustion engine and the electric motor, the electric motor must also be able to transmit the power of the internal combustion engine.
In der DE 196 06 771 A1 ist ein Hybridantrieb für Kraftfahrzeuge beschrieben, der einen Verbrennungsmotor sowie ein mit dem Verbrennungsmotor über eine Kupplung verbundenes, aus Elektromotoren und einem Überlagerungsgetriebe kombiniertes stufenloses Getriebe enthält. Einer der Elektromotoren steht mit einer Reaktionswelle in Antriebsverbindung und der andere Elektromotor steht mit der Eingangswelle oder der Abtriebswelle des Überlagerungsgetriebes inIn DE 196 06 771 A1 discloses a hybrid drive for motor vehicles is described, which includes an internal combustion engine and a connected to the engine via a clutch, combined from electric motors and a superposition gear continuously variable transmission. One of the electric motors is in drive connection with a reaction shaft and the other electric motor is connected to the input shaft or the output shaft of the superposition gear
Antriebsverbindung. Zwischen der Reaktionswelle und dem Überlagerungsgetriebe ist ein zweistufiges Übersetzungsgetriebe angeordnet, das zwei Antriebswellen aufweist. Das Überlagerungsgetriebe ist in ein erstes und ein zweites Überlagerungsgetriebe unterschiedlicher Übersetzung unterteilt, die jeweils mit einer der beiden Ausgangswellen des Übersetzungsgetriebes verbunden sind.Drive connection. Between the reaction shaft and the superposition gear, a two-stage transmission gear is arranged, which has two drive shafts. The superposition gear is divided into a first and a second superposition gear different ratio, which are each connected to one of the two output shafts of the transmission gear.
Der Verbrennungsmotor, die Elektromotoren sowie die verschiedenen Getriebe sind koaxial angeordnet. Die Anordnung erhöht die nutzbare Getriebespreizung und vermindert die übertragene elektrische Leistung.The internal combustion engine, the electric motors and the various gears are arranged coaxially. The arrangement increases the usable transmission spread and reduces the transmitted electrical power.
In der DE 100 21 025 A1 ist ein Getriebe für Hybridfahrzeuge beschrieben, das zwei Planetengetriebe aufweist, deren Hohlräder mittels eines Zahnkranzes mit der Kurbelwelle eines Verbrennungsmotors verbunden sind. Jedes Planetengetriebe ist mit jeweils einem Elektromotor und jeweils einer Getriebewelle gekoppelt, auf denen Eingangszahnräder für verschiedene Getriebeübersetzungen angeordnet sind. Zur Steigerung des Gesamtwirkungsgrads bei konstantemIn DE 100 21 025 A1 a transmission for hybrid vehicles is described, which has two planetary gear, whose ring gears are connected by means of a ring gear with the crankshaft of an internal combustion engine. Each planetary gear is coupled to a respective electric motor and a respective transmission shaft, on which input gears for different transmission ratios are arranged. To increase the overall efficiency at constant
Fahrbetrieb ist eine Überbrückung des Elektromotors und/oder der Planetengetriebe vorgesehen. Hierzu kann beispielsweise ein Zahnradpaar verwendet werden, das die Eingangswelle und eine Getriebewelle miteinander verbindet. Beschrieben sind mehrere Ausführungsbeispiele, in denen der Verbrennungs- motor, der wenigstens eine Elektromotor sowie die beiden Planetengetriebe koaxial angeordnet sind.Driving is a bridging of the electric motor and / or the planetary gear provided. For this purpose, for example, a gear pair can be used, which connects the input shaft and a transmission shaft with each other. Described are several embodiments in which the combustion engine, the at least one electric motor and the two planetary gears are arranged coaxially.
In der EP 0 791 495 A2 ist ein Hybridantrieb für ein Kraftfahrzeug beschrieben, der einen Verbrennungsmotor, einen ersten Elektromotor sowie ein Überlage- rungsgetriebe enthält, die koaxial angeordnet sind. Der erste Elektromotor umschließt zumindest teilweise das Planetengetriebe. Zwischen dem Planetengetriebe und dem Verbrennungsmotor ist ein zweiter Elektromotor angeordnet, der als Generator betrieben wird. Das Überlagerungsgetriebe ist als Planetengetrie- be realisiert, wobei der Verbrennungsmotor über eine erste Antriebswelle mit dem Planetenträger, der erste Elektromotor über eine zweite Antriebswelle mit dem Hohlrad und der zweite Elektromotor indirekt über eine Abtriebswelle mit dem Sonnenrad des Planetengetriebes verbunden ist.EP 0 791 495 A2 describes a hybrid drive for a motor vehicle, which has an internal combustion engine, a first electric motor and a superposition motor. includes gearbox, which are arranged coaxially. The first electric motor at least partially encloses the planetary gear. Between the planetary gear and the internal combustion engine, a second electric motor is arranged, which is operated as a generator. The superposition gear is realized as a planetary gear, wherein the internal combustion engine via a first drive shaft to the planet carrier, the first electric motor via a second drive shaft to the ring gear and the second electric motor is indirectly connected via an output shaft with the sun gear of the planetary gear.
Aus der EP 1 092 583 A1 ist ein Hybridantrieb für ein Kraftfahrzeug bekannt geworden, welcher neben einem Verbrennungsmotor zwei Elektromotoren und ein Planetengetriebe aufweist, die jeweils koaxial zueinander angeordnet sind. Die Antriebswelle des Verbrennungsmotors ist mit einer ersten und zweiten Kupplung verbunden. Die erste Kupplung kann die Antriebswelle des Verbrennungs- motors mit einem Rotor eines ersten Elektromotors und die zweite Kupplung kann die Antriebswelle des Verbrennungsmotors mit einem Stator des ersten Elektromotors verbinden. Zwischen der Antriebswelle des Verbrennungsmotors und den Komponenten des Elektromotors sind Kupplungen angeordnet, wobei wenigstens eine Kupplung betätigt werden muss, um die Antriebswelle des Ver- brennungsmotors mit einer Komponente des Elektromotors zu verbinden. Eine direkte Verbindung der Antriebswelle mit dem Planetengetriebe ist nicht vorgesehen.From EP 1 092 583 A1 a hybrid drive for a motor vehicle has become known, which in addition to an internal combustion engine has two electric motors and a planetary gear, which are each arranged coaxially with one another. The drive shaft of the internal combustion engine is connected to a first and second clutch. The first clutch may connect the drive shaft of the internal combustion engine to a rotor of a first electric motor, and the second clutch may connect the drive shaft of the internal combustion engine to a stator of the first electric motor. Between the drive shaft of the internal combustion engine and the components of the electric motor clutches are arranged, wherein at least one clutch must be actuated in order to connect the drive shaft of the internal combustion engine with a component of the electric motor. A direct connection of the drive shaft with the planetary gear is not provided.
Der Erfindung liegt die Aufgabe zugrunde, einen kompakten Hybridantrieb, ins- besondere für ein Kraftfahrzeug anzugeben.The invention has for its object to provide a compact hybrid drive, in particular for a motor vehicle.
Die Aufgabe wird durch die im unabhängigen Anspruch angegebenen Merkmale gelöst.The object is achieved by the features specified in the independent claim.
Vorteile der ErfindungAdvantages of the invention
Der erfindungsgemäße Hybridantrieb sieht wenigstens einen ersten Elektromotor sowie ein Überlagerungsgetriebe vor, die koaxial angeordnet sind. Ein Verbrennungsmotor ist über eine erste Antriebswelle unmittelbar und formschlüssig mit dem Überlagerungsgetriebe verbunden. Weiterhin ist der erste Elektromotor über eine zweite Antriebswelle unmittelbar und formschlüssig mit dem Überlagerungsgetriebe verbunden. Ein erster Rotor des ersten Elektromotors ist unmittelbar und formschlüssig mit der ersten Antriebswelle des Verbrennungsmotors verbunden.The hybrid drive according to the invention provides at least a first electric motor and a superposition gear, which are arranged coaxially. An internal combustion engine is directly and positively connected via a first drive shaft connected to the superposition gearbox. Furthermore, the first electric motor via a second drive shaft is directly and positively connected to the superposition gear. A first rotor of the first electric motor is directly and positively connected to the first drive shaft of the internal combustion engine.
Die koaxiale Anordnung des ersten Elektromotors und des Überlagerungsgetriebes führt zu einer kompakten Bauform des Hybridantriebs. Die unmittelbare und formschlüssige Verbindung des ersten Rotors des ersten Elektromotors mit der ersten Antriebswelle des Verbrennungsmotors minimiert die erforderlicheThe coaxial arrangement of the first electric motor and the superposition gear leads to a compact design of the hybrid drive. The direct and positive connection of the first rotor of the first electric motor with the first drive shaft of the internal combustion engine minimizes the required
Anzahl von Bauteilen zur Realisierung des erfindungsgemäßen Hybridantriebs, der dadurch nicht nur besonders einfach und kostengünstig hergestellt werden kann, sondern auch einen hohen Wirkungsgrad aufweist.Number of components for the realization of the hybrid drive according to the invention, which can be made not only particularly simple and inexpensive, but also has a high efficiency.
Der erfindungsgemäße Hybridantrieb ermöglicht die Bereitstellung einer stufenlosen Drehzahl an der Abtriebswelle des Überlagerungsgetriebes, die beispielsweise mit einem bekannten Getriebe eines Kraftfahrzeugs verbunden werden kann.The hybrid drive according to the invention makes it possible to provide a variable speed on the output shaft of the superposition gearing, which can be connected for example to a known transmission of a motor vehicle.
Der wenigstens eine erste Elektromotor kann sowohl als Antriebsmotor als auch als Generator betrieben werden, sodass der erfindungsgemäße Hybridantrieb eine Rückspeisung einer Bremsenergie in eine Batterie ermöglicht.The at least one first electric motor can be operated both as a drive motor and as a generator, so that the hybrid drive according to the invention enables a regeneration of braking energy into a battery.
Die Drehmomentaufteilung zwischen dem Verbrennungsmotor und dem wenigs- tens einen Elektromotor kann durch das Übersetzungsverhältnis des Überlagerungsgetriebes festgelegt werden. Das Übersetzungsverhältnis legt weiterhin das Drehzahlverhältnis zwischen den Antrieben fest.The torque distribution between the engine and the at least one electric motor can be determined by the gear ratio of the superposition gear. The gear ratio also defines the speed ratio between the drives.
Vorteilhafte Weiterbildungen und Ausgestaltungen des erfindungsgemäßen Hy- bridantriebs ergeben sich aus abhängigen Ansprüchen.Advantageous developments and refinements of the hybrid drive according to the invention will be apparent from the dependent claims.
Eine erste Ausgestaltung sieht vor, dass der Elektromotor zwischen dem Verbrennungsmotor und dem Überlagerungsgetriebe angeordnet ist. Mit dieser Maßnahme wird erreicht, dass nach der Abtriebswelle des Überlagerungsgetrie- bes kein weiterer Antrieb angeordnet werden muss, sodass die Abtriebswelle des Überlagerungsgetriebes unmittelbar mit weiteren Bauteilen, wie beispielsweise einem Handschalt- oder Automatikgetriebe eines Kraftfahrzeugs, verbunden werden kann.A first embodiment provides that the electric motor between the engine and the superposition gear is arranged. This measure ensures that after the output shaft of the superposition bes no further drive must be arranged so that the output shaft of the superposition gearing can be directly connected to other components, such as a manual or automatic transmission of a motor vehicle.
Eine Ausgestaltung sieht vor, dass wenigstens ein zweiter Elektromotor die erste Antriebswelle umschließt. Bei dieser Ausgestaltung wird für den zweiten Elektromotor keine zusätzliche Antriebswelle benötigt. Der erste Rotor des zweiten Elektromotors wirkt mit einem zweiten Rotor zusammen, der beispielsweise an einem Antriebsgehäuse angeordnet ist. In diesem Fall wird der zweite Rotor zu einem Stator. Der zweite Elektromotor ermöglicht einen dualen Betrieb, bei welchem beispielsweise der erste Elektromotor als Antriebsmotor und der zweite Elektromotor als Generator betrieben wird.An embodiment provides that at least a second electric motor surrounds the first drive shaft. In this embodiment, no additional drive shaft is required for the second electric motor. The first rotor of the second electric motor interacts with a second rotor, which is arranged, for example, on a drive housing. In this case, the second rotor becomes a stator. The second electric motor enables a dual operation in which, for example, the first electric motor is operated as a drive motor and the second electric motor as a generator.
Eine besonders vorteilhafte Ausgestaltung sieht vor, dass der erste Elektromotor in einer Ausnehmung der ersten Antriebswelle angeordnet ist. Durch die Anordnung des ersten Elektromotors in der Ausnehmung der ersten Antriebswelle des Verbrennungsmotors wird ein besonders kompakter Aufbau des erfindungsgemäßen Hybridantriebs möglich. Insbesondere kann gemäß einer Weiterbildung dieser Ausgestaltung vorgesehen sein, dass die erste Antriebswelle eine Aufweitung aufweist, welche die Realisierung des wenigstens einen ersten Elektromotors mit der erforderlichen Größe zum Bereitstellen des geforderten Drehmoments ermöglicht.A particularly advantageous embodiment provides that the first electric motor is arranged in a recess of the first drive shaft. The arrangement of the first electric motor in the recess of the first drive shaft of the internal combustion engine, a particularly compact design of the hybrid drive according to the invention is possible. In particular, it can be provided according to a development of this embodiment that the first drive shaft has a widening, which allows the realization of the at least one first electric motor with the required size for providing the required torque.
Eine weitere Ausgestaltung sieht vor, dass das Überlagerungsgetriebe als Planetengetriebe realisiert ist. Gemäß einer Ausgestaltung kann vorgesehen sein, dass die erste Antriebswelle mit dem Hohlrad und die zweite Antriebswelle mit dem Sonnenrad des Planetengetriebes verbunden ist. Diese Ausgestaltung ermöglicht es, dass die zweite Antriebswelle des ersten Elektromotors innerhalb der ersten Antriebswelle des Verbrennungsmotors geführt und direkt mit demAnother embodiment provides that the superposition gear is realized as a planetary gear. According to one embodiment, it may be provided that the first drive shaft is connected to the ring gear and the second drive shaft is connected to the sun gear of the planetary gear. This configuration makes it possible for the second drive shaft of the first electric motor to be guided within the first drive shaft of the internal combustion engine and directly connected to the engine
Sonnenrad verbunden werden kann.Sun wheel can be connected.
Gemäß einer Ausgestaltung ist vorgesehen, dass der erste Rotor des ersten Elektromotors als Läufer und ein zweiter Rotor des ersten Elektromotors als Er- reger ausgebildet ist. Aufgrund der unmittelbaren und formschlüssigen Verbindung des ersten Rotors des ersten Elektromotors mit der ersten Antriebswelle weist der erste Elektromotor im Antriebs- und Bremsbetrieb bezogen auf ein Antriebsgehäuse nur drehende Bauteile auf, sodass die Bauteile anstelle als Stator und Rotor mit erstem und zweitem Rotor bezeichnet werden.According to one embodiment, it is provided that the first rotor of the first electric motor as a rotor and a second rotor of the first electric motor as Er- is educated. Due to the direct and positive connection of the first rotor of the first electric motor with the first drive shaft, the first electric motor in drive and brake operation relative to a drive housing only rotating components, so that the components instead of a stator and rotor are referred to with first and second rotor.
Eine Weiterbildung des erfindungsgemäßen Hybridantriebs sieht eine Kupplung zum Verbinden der ersten Antriebswelle mit der zweiten Antriebswelle zur Überbrückung des Elektromotors vor. Bei betätigter Kupplung kann an der zweiten Antriebswelle auch bei einem Defekt insbesondere des ersten Elektromotors einA development of the hybrid drive according to the invention provides a coupling for connecting the first drive shaft with the second drive shaft for bridging the electric motor. When the clutch is actuated, the second drive shaft can also engage in the event of a defect, in particular of the first electric motor
Drehmoment bereitgestellt werden.Torque be provided.
Eine andere Weiterbildung des erfindungsgemäßen Hybridantriebs sieht vor, dass der wenigstens eine erste Elektromotor in radialer Richtung mehrere erste Rotoren aufweist, die mit einer entsprechenden Anzahl von zweiten Rotoren zusammenwirken. Die Weiterbildung ermöglicht die Erhöhung der für den magnetischen Fluss zur Verfügung stehenden Fläche zwischen den beiden Rotoren sowie eine entsprechende Erhöhung des Volumens, mit der bei einer geforderten hohen Antriebsleistung einer magnetischen Sättigung des Materials ent- gegengewirkt werden kann.Another development of the hybrid drive according to the invention provides that the at least one first electric motor has a plurality of first rotors in the radial direction, which interact with a corresponding number of second rotors. The further development makes it possible to increase the area available for the magnetic flux between the two rotors and a corresponding increase in the volume with which a magnetic saturation of the material can be counteracted given a required high drive power.
Weitere vorteilhafte Weiterbildungen und Ausgestaltungen des erfindungsgemäßen Hybridantriebs ergeben sich aus weiteren abhängigen Ansprüchen und aus der folgenden Beschreibung.Further advantageous developments and refinements of the hybrid drive according to the invention will become apparent from further dependent claims and from the following description.
Zeichnungdrawing
Figur 1 zeigt ein vereinfachtes Schnittbild durch einen erfindungsgemäßen Hybridantrieb und Figur 2 zeigt ein vereinfachtes Schnittbild durch einen Elektromotor des Hybridantriebs. Beschreibung der AusführungsbeispieleFigure 1 shows a simplified sectional view through a hybrid drive according to the invention and Figure 2 shows a simplified sectional view through an electric motor of the hybrid drive. Description of the embodiments
Figur 1 zeigt einen Verbrennungsmotor 10, der über eine erste Antriebswelle 11 unmittelbar und formschlüssig mit einem Hohlrad 12 eines Plane- tengetriebes 13 verbunden ist. Die Antriebswelle 11 enthält eine Ausnehmung 14, auf deren Innenseite ein erster Rotor 15 eines ersten Elektromotors 16 angeordnet ist. Ein zweiter Rotor 17 des ersten Elektromotors 16 ist über eine zweite Antriebswelle 18 unmittelbar und formschlüssig mit dem Sonnenrad 19 des Planetengetriebes 13 verbunden.FIG. 1 shows an internal combustion engine 10, which is connected directly and positively to a ring gear 12 of a planetary gear 13 via a first drive shaft 11. The drive shaft 11 includes a recess 14, on the inside of which a first rotor 15 of a first electric motor 16 is arranged. A second rotor 17 of the first electric motor 16 is connected via a second drive shaft 18 directly and positively to the sun gear 19 of the planetary gear 13.
Die zweite Antriebswelle 18 ist innerhalb der ersten Antriebswelle 11 mit einem ersten bis dritten Antriebswellenlager 20, 21 , 22 gelagert. Der erste Elektromotor 16 ist über eine Kupplung 23 mit der ersten Antriebswelle 11 verbindbar.The second drive shaft 18 is mounted within the first drive shaft 11 with a first to third drive shaft bearing 20, 21, 22. The first electric motor 16 is connected via a coupling 23 with the first drive shaft 11.
Auf der Außenseite der Antriebswelle 11 ist ein erster Rotor 24 eines zweiten Elektromotors 25 angeordnet, der mit einem zweiten Rotor 26 zusammenwirkt, der an einem Antriebsgehäuse 27 angeordnet ist.On the outside of the drive shaft 11, a first rotor 24 of a second electric motor 25 is arranged, which cooperates with a second rotor 26 which is arranged on a drive housing 27.
Die erste Antriebswelle 11 ist mit einem vierten, fünften und sechsten Antriebswellenlager 28, 29, 30 gegen das Antriebsgehäuse 27 abgestützt.The first drive shaft 11 is supported with a fourth, fifth and sixth drive shaft bearing 28, 29, 30 against the drive housing 27.
Die Planetenräder 31 , 32 sind mit ersten bis vierten Planetenlagern 33, 34, 35, 36 auf einem Planetenträger 37 gelagert, der mit einer ersten Ab- triebswelle 38 verbunden ist. Innerhalb der ersten Abtriebswelle 38 ist eine mit dem Sonnenrad 19 verbundene zweite Abtriebswelle 39 mit einem siebten und achten Antriebswellenlager 40, 41 gelagert.The planet gears 31, 32 are mounted with first to fourth planet bearings 33, 34, 35, 36 on a planet carrier 37, which is connected to a first output shaft 38. Within the first output shaft 38, a second output shaft 39 connected to the sun gear 19 is mounted with a seventh and eighth drive shaft bearing 40, 41.
Figur 2 zeigt einen alternativen Aufbau des ersten Elektromotors 16. Die- jenigen in Figur 2 gezeigten Teile, die mit den in Figur 1 gezeigten Teilen übereinstimmen, tragen dieselben Bezugszeichen. Die erste Antriebswelle 11 weist einen ersten Rotorträger 50 und die zweite Antriebswelle 18 einen zweiten Rotorträger 51 auf. Am ersten Rotorträger 50 ist ein dritter Rotor 52 angeordnet, der mit einem am zweiten Rotorträger 51 angeordneten vierten Rotor 53 zusammenwirkt.FIG. 2 shows an alternative construction of the first electric motor 16. Those parts shown in FIG. 2 that correspond to the parts shown in FIG. 1 bear the same reference numerals. The first drive shaft 11 has a first rotor carrier 50 and the second drive shaft 18 has a second rotor carrier 51. On the first rotor carrier 50 is a third rotor 52, which cooperates with a second rotor carrier 51 arranged on the fourth rotor 53.
Der erfindungsgemäße Hybridantrieb arbeitet folgendermaßen:The hybrid drive according to the invention operates as follows:
Das Planetengetriebe 13 ist allgemein ein Überlagerungsgetriebe, das mit der ersten Antriebswelle 11 und mit der zweiten Antriebswelle 18 jeweils unmittelbar und formschlüssig verbunden ist, wobei die beiden Antriebswellen 11 , 18 sowohl beliebige Drehzahlen als auch beide Drehrichtungen aufweisen können. Ein überschüssiges Drehmoment wird an der erstenThe planetary gear 13 is generally a superposition gear, which is respectively connected directly and positively to the first drive shaft 11 and the second drive shaft 18, wherein the two drive shafts 11, 18 both arbitrary speeds and both directions of rotation may have. An excess torque will be at the first
Abtriebswelle 38 des Überlagerungsgetriebes 13 bereitgestellt, das zum Antrieb eines nicht näher gezeigten Kraftfahrzeugs herangezogen werden kann. Die erste Abtriebswelle 38 ist vorzugsweise mit einem weiteren, nicht näher gezeigten Getriebe verbunden, um einen weiten Überset- zungsbereich abdecken zu können.Output shaft 38 of the superposition gear 13 is provided, which can be used to drive a motor vehicle not shown in detail. The first output shaft 38 is preferably connected to a further gear, not shown in greater detail, in order to be able to cover a wide transmission range.
Im gezeigten Ausführungsbeispiel ist das Überlagerungsgetriebe als Planetengetriebe 13 realisiert. Im Folgenden wird lediglich auf das Planetengetriebe 13 Bezug genommen. Im gezeigten Ausführungsbeispiel wird das vom Verbrennungsmotor 10 bereitgestellte Drehmoment über die erste Antriebswelle 11 ohne Zwischenschaltung von weiteren Bauteilen aufgrund der unmittelbaren und formschlüssigen Verbindung direkt auf das Hohlrad 12 des Planetengetriebes 13 und das vom ersten Elektromotor 16 bereitgestellte Drehmoment über die zweite Antriebswelle 18 ebenfalls ohne Zwischenschaltung von weiteren Bauteilen aufgrund der unmittelbaren und formschlüssigen Verbindung direkt auf das Sonnenrad 19 des Planetengetriebes 13 übertragen.In the illustrated embodiment, the superposition gear is realized as a planetary gear 13. In the following, only the planetary gear 13 is referred to. In the illustrated embodiment, the torque provided by the engine 10 via the first drive shaft 11 without interposition of other components due to the direct and positive connection directly to the ring gear 12 of the planetary gear 13 and the torque provided by the first electric motor 16 via the second drive shaft 18 also without interposition transmitted from other components due to the direct and positive connection directly to the sun gear 19 of the planetary gear 13.
Eine kompakte Bauform des Hybridantriebs wird bereits dadurch erhalten, dass sowohl der erste Elektromotor 16 als auch das Planetengetriebe 13 koaxial angeordnet sind. Weiterhin ist zweckmäßigerweise die erste Antriebswelle 11 mit dem Verbrennungsmotor 10 koaxial zum ersten Elektromotor 16 und zum Planetengetriebe 13 angeordnet. Eine kompakte Bauform und ein hoher gesamter Wirkungsgrad des Hybridantriebs werden weiterhin dadurch erhalten, dass ein Rotor des Elektromotors mit der ersten Antriebswelle 11 formschlüssig und somit drehfest verbunden ist. Im gezeigten Ausführungsbeispiel ist der erste Rotor 15 des ersten Elektromotors 16 mit der ersten Antriebswelle 11 verbunden. Weiterhin ist der ers- te Rotor 24 des zweiten Elektromotors 25 formschlüssig und somit drehfest mit der ersten Antriebswelle 11 verbunden.A compact design of the hybrid drive is already obtained in that both the first electric motor 16 and the planetary gear 13 are arranged coaxially. Furthermore, the first drive shaft 11 with the internal combustion engine 10 is expediently arranged coaxially to the first electric motor 16 and to the planetary gear 13. A compact design and a high overall efficiency of the hybrid drive will be Furthermore, obtained by a rotor of the electric motor with the first drive shaft 11 is positively connected and thus rotatably connected. In the exemplary embodiment shown, the first rotor 15 of the first electric motor 16 is connected to the first drive shaft 11. Furthermore, the first rotor 24 of the second electric motor 25 is connected to the first drive shaft 11 in a form-fitting manner and thus in a rotationally fixed manner.
Der erste Elektromotor 16 wird hauptsächlich als Antriebselektromotor eingesetzt, während der zweite Elektromotor 25 hauptsächlich als Generator betrieben wird. Prinzipiell ist es möglich, die Elektromotoren 16, 25 unabhängig voneinander als Antriebsmotoren oder als Generatoren zu betreiben.The first electric motor 16 is mainly used as a drive electric motor, while the second electric motor 25 is mainly operated as a generator. In principle, it is possible to operate the electric motors 16, 25 independently of one another as drive motors or as generators.
Die wesentlichen Teile der Elektromotoren 16, 25 werden jeweils als Roto- ren bezeichnet. Beide Teile des ersten Elektromotors 16 können bezogen auf das Antriebsgehäuse 27 eine Drehbewegung ausführen. Der erste Rotor 15 des ersten Elektromotors 16 ist beispielsweise als herkömmlicher Rotor und der zweite Rotor 17 des ersten Elektromotors 16 als herkömmlicher Stator ausgebildet. Der zweite Rotor 17 kann im einfachsten Fall mit Permanentmagneten realisiert werden. Vorzugsweise wird eine Erregerwicklung vorgesehen, welche die Vorgabe eines variablen magnetischen Flusses ermöglicht.The essential parts of the electric motors 16, 25 are each referred to as rotors. Both parts of the first electric motor 16 may be rotatable relative to the drive housing 27. The first rotor 15 of the first electric motor 16 is designed, for example, as a conventional rotor and the second rotor 17 of the first electric motor 16 as a conventional stator. The second rotor 17 can be realized in the simplest case with permanent magnets. Preferably, a field winding is provided, which allows the specification of a variable magnetic flux.
Der erste Rotor 24 des zweiten Elektromotors 25 führt ebenfalls stets eine Drehbewegung bezogen auf das Antriebsgehäuse 27 aus. Der zweite Rotor 26 des zweiten Elektromotors 25 ist im gezeigten Ausführungsbeispiel fest mit dem Antriebsgehäuse 27 verbunden. Der zweite Rotor 26 wird dennoch aus Gründen der Einheitlichkeit als Rotor bezeichnet. Der erste Rotor 24 des zweiten Elektromotors 25 kann ebenfalls im einfachsten Fall mit Permanentmagneten realisiert werden. Vorzugsweise wird auch hier eine Erregerwicklung vorgesehen, welche die Vorgabe eines variablen magnetischen Flusses ermöglicht. Die erforderlichen Stromzuführungen zu den Rotoren 15, 17, 24, 26 der Elektromotoren 16, 25 erfolgen beispielsweise über Schleifringe, die nicht näher dargestellt sind. Die mit dem ersten bis dritten Antriebswellenlager 20, 21 , 22 in der ersten Antriebswelle 11 gelagerte zweite Antriebswelle 18 kann gegenüber der ersten Antriebswelle 11 eine beliebige relative Drehzahl sowie Drehrich- tung aufweisen. Bei einem feststehenden Planetenträger 37 tritt zwischen den beiden Antriebswellen 11 , 18 ein Drehzahlverhältnis auf, welches durch das Übersetzungsverhältnis des Planetengetriebes 13 gegeben ist.The first rotor 24 of the second electric motor 25 also always performs a rotational movement with respect to the drive housing 27. The second rotor 26 of the second electric motor 25 is fixedly connected to the drive housing 27 in the embodiment shown. The second rotor 26 is still referred to as a rotor for consistency. The first rotor 24 of the second electric motor 25 can also be realized in the simplest case with permanent magnets. Preferably, an excitation winding is also provided here, which allows the specification of a variable magnetic flux. The required power supply to the rotors 15, 17, 24, 26 of the electric motors 16, 25 are made for example via slip rings, which are not shown in detail. The second drive shaft 18 mounted with the first to third drive shaft bearings 20, 21, 22 in the first drive shaft 11 may have any relative rotational speed and direction of rotation relative to the first drive shaft 11. In a fixed planet carrier 37 occurs between the two drive shafts 11, 18, a speed ratio, which is given by the gear ratio of the planetary gear 13.
Während des Hybridantrieb-Betriebs können folgende Fälle auftreten. Bei einer beispielsweise rechts drehenden ersten Antriebswelle 11 mit einerDuring hybrid drive operation, the following cases may occur. In an example, right rotating first drive shaft 11 with a
Drehzahl von 2000 U/min und einer links drehenden zweiten Antriebswelle 18 von 8000 U/min steht die erste Abtriebswelle 38. Bei einer beispielsweise rechts drehenden ersten Antriebswelle 11 mit einer Drehzahl von 2000 U/min und einer ebenfalls rechts drehenden zweiten Antriebswelle 18 mit einer Drehzahl von ebenfalls 2000 U/min weist die erste Abtriebswelle 38 eine Drehzahl von 2000 U/min auf. Bei einer beispielsweise rechts drehenden ersten Antriebswelle 11 mit einer Drehzahl von 2000 U/min und einer rechts drehenden zweiten Antriebswelle 18 mit einer Drehzahl von 3000 U/min weist die erste Abtriebswelle 38 eine Drehzahl von 4000 U/min auf. Durch eine entsprechende Steuerung des ersten Elektromotors 16 kann die Drehzahl der ersten Abtriebswelle 38 kontinuierlich von null bis zur maximalen Drehzahl verändert werden.Speed of 2000 rev / min and a left-rotating second drive shaft 18 of 8000 rev / min is the first output shaft 38. In an example right rotating first drive shaft 11 at a speed of 2000 rev / min and a likewise rotating second drive shaft 18 with a Speed of also 2000 rpm, the first output shaft 38 has a speed of 2000 rpm. For example, if a first drive shaft 11 rotates clockwise at a speed of 2000 rpm and a right-rotating second drive shaft 18 has a speed of 3000 rpm, the first output shaft 38 has a speed of 4000 rpm. By a corresponding control of the first electric motor 16, the rotational speed of the first output shaft 38 can be changed continuously from zero to the maximum speed.
Die vom Verbrennungsmotor 10 und von den Elektromotoren 16, 25 be- reitzustellenden Drehmomente und die Leistungen verhalten sich wie dasThe torques and the powers to be provided by the internal combustion engine 10 and by the electric motors 16, 25 behave like this
Übersetzungsverhältnis des Planetengetriebes 13. Wenn beispielsweise ein Übersetzungsverhältnis von 1 :4 angenommen wird, muss die zweite Antriebswelle 18 der Elektromotoren 16, 25 bei einer vorgegebenen gesamten Antriebsleistung von beispielsweise 100 KW nur 25 KW aufbrin- gen. Da sich die Drehzahlen wie das Übersetzungsverhältnis des Planetengetriebes 13 verhalten, würde beispielsweise bei einem Stillstand der ersten Abtriebswelle 38 und einer Drehzahl der ersten Antriebswelle 11 des Verbrennungsmotors 10 von beispielsweise 4000 U/min die zweite Abtriebswelle 18 der Elektromotoren 16, 25 eine Drehzahl von 16.000 U/min aufweisen.Gear ratio of the planetary gear 13. If, for example, a gear ratio of 1: 4 is assumed, the second drive shaft 18 of the electric motors 16, 25 at a predetermined total drive power of, for example, 100 KW apply only 25 KW. Since the speeds as the gear ratio of Behave planetary gear 13, for example, at a standstill of the first output shaft 38 and a speed of the first drive shaft 11 of the engine 10, for example, 4000 rev / min, the second Output shaft 18 of the electric motors 16, 25 have a speed of 16,000 rev / min.
Der zweite Elektromotor 25 wird beispielsweise als Generator betrieben. In diesem Betriebszustand kann der zweite Elektromotor 25 den Erregerstrom des ersten Elektromotors 16 bereitstellen. Weiterhin kann durch den Generatorbetrieb ein Bremsmoment aufgebracht werden. Der im Generatorbetrieb bereitgestellte Strom kann zum Laden einer nicht näher gezeigten Batterie herangezogen werden.The second electric motor 25 is operated, for example, as a generator. In this operating state, the second electric motor 25 can provide the exciting current of the first electric motor 16. Furthermore, a braking torque can be applied by the generator operation. The current provided in the generator mode can be used to charge a battery not shown in detail.
Bei einem Ausfall der Elektromotoren 16, 25 kann die erste Antriebswelle 11 des Verbrennungsmotors 10 mittels der Kupplung 23 unmittelbar mit der zweiten Antriebswelle 18 drehfest verbunden werden. Weiterhin kann die Kupplung 42 vorgesehen sein, welche die erste Antriebswelle 11 des Verbrennungsmotors 10 mit dem Antriebsgehäuse 27 drehfest verbindet.In case of failure of the electric motors 16, 25, the first drive shaft 11 of the internal combustion engine 10 by means of the clutch 23 directly to the second drive shaft 18 are rotatably connected. Furthermore, the coupling 42 may be provided, which rotatably connects the first drive shaft 11 of the internal combustion engine 10 with the drive housing 27.
Bei geschlossener Kupplung 42 kann sich die Antriebswelle 11 nicht mehr drehen. Dieser Betriebszustand ist vorgesehen, wenn das Antriebsmoment allein von wenigstens einem der Elektromotoren 16, 25 aufgebracht werden soll.When the clutch 42 is closed, the drive shaft 11 can not rotate. This operating state is provided when the drive torque is to be applied by at least one of the electric motors 16, 25 alone.
Die zweite Abtriebswelle 39, die mit dem Sonnenrad 19 des Planetengetriebes 13 verbunden ist, welche mit dem siebten und achten Antriebswellenlager 40, 41 innerhalb der ersten Abtriebswelle 38 gelagert ist, kann zu einem Antreiben eines nicht näher gezeigten Aggregats herangezogen werden.The second output shaft 39, which is connected to the sun gear 19 of the planetary gear 13, which is mounted with the seventh and eighth drive shaft bearings 40, 41 within the first output shaft 38, can be used to drive a unit not shown in detail.
Eine hohe Leistungsdichte der Elektromotoren 16, 25 wird erzielt, wenn die Luftspalte zwischen den Rotoren 15, 17; 24, 26 möglichst gering sind. Weiterhin sollte eine möglichst große Fläche für den magnetischen Fluss zur Verfügung stehen, um die eingesetzten Materialien nicht bis an die magnetische Sättigungsgrenze zu belasten.A high power density of the electric motors 16, 25 is achieved when the air gaps between the rotors 15, 17; 24, 26 are as small as possible. Furthermore, as large an area as possible for the magnetic flux should be available so that the materials used are not strained to the magnetic saturation limit.
In Figur 2 ist eine besonders vorteilhafte Ausgestaltung wenigstens des ersten Elektromotors 16 gezeigt. Der erste Elektromotor 16 weist mehrere Rotorpaare 15, 17; 52, 53 auf. Die zusätzlichen Rotoren 52, 53 sind an den Rotorträgern 50, 51 angeordnet. Die erste Antriebswelle 11 enthält beispielsweise den ersten Rotorträger 50 und die zweite Antriebswelle 18 enthält beispielsweise den zweiten Rotorträger 51.FIG. 2 shows a particularly advantageous embodiment of at least the first electric motor 16. The first electric motor 16 has several Rotor pairs 15, 17; 52, 53 on. The additional rotors 52, 53 are arranged on the rotor carriers 50, 51. The first drive shaft 11 includes, for example, the first rotor carrier 50 and the second drive shaft 18 includes, for example, the second rotor carrier 51.
Der mit der ersten Antriebswelle 11 formschlüssig und damit drehfest verbundene erste Rotor 15 wirkt mit dem am zweiten Rotorträger 51 formschlüssig und damit drehfest angeordneten zweiten Rotor 17 zusammen. Der am ersten Rotorträger 50 formschlüssig und damit drehfest angeord- nete dritte Rotor 52 wirkt mit dem am zweiten Rotorträger 51 formschlüssig und damit drehfest angeordneten vierten Rotor 53 zusammen.The first rotor 15 with the first drive shaft 11 positively and thus rotatably connected acts with the second rotor carrier 51 on the form-fitting and thus rotatably mounted second rotor 17 together. The third rotor 52, which is arranged in a form-fitting manner and thus rotationally fixed on the first rotor carrier 50, interacts with the fourth rotor 53 arranged in a form-fitting manner and thus non-rotatably mounted on the second rotor carrier 51.
Ebenso wie der erste Elektromotor 16 kann auch der zweite Elektromotor 25 weitere Rotorpaare aufweisen. Like the first electric motor 16, the second electric motor 25 may also have further rotor pairs.

Claims

Ansprüche claims
1. Hybridantrieb, insbesondere für ein Kraftfahrzeug, der wenigstens einen ersten Elektromotor (16) sowie ein Überlagerungsgetriebe (13) enthält, die koaxial angeordnet sind, bei dem ein Verbrennungsmotor (10) über eine erste Antriebswelle (11) und der erste Elektromotor (16) über eine zweite An- triebswelle (18) mit dem Überlagerungsgetriebe (13) verbunden sind, dadurch gekennzeichnet, dass ein erster Rotor (15) des wenigstens einen ersten Elektromotors (16) drehfest mit der ersten Antriebswelle (11) verbunden ist.1. hybrid drive, in particular for a motor vehicle, the at least one first electric motor (16) and a superposition gear (13), which are arranged coaxially, in which an internal combustion engine (10) via a first drive shaft (11) and the first electric motor (16 ) are connected to the superposition gear (13) via a second drive shaft (18), characterized in that a first rotor (15) of the at least one first electric motor (16) is non-rotatably connected to the first drive shaft (11).
2. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass der erste2. hybrid drive according to claim 1, characterized in that the first
Elektromotor (16) zwischen dem Verbrennungsmotor (10) und dem Überlagerungsgetriebe (13) angeordnet ist.Electric motor (16) between the internal combustion engine (10) and the superposition gear (13) is arranged.
3. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass wenigstens ein zweiter Elektromotor (25) die erste Antriebswelle (11) umschließt.3. Hybrid drive according to claim 1, characterized in that at least a second electric motor (25) surrounds the first drive shaft (11).
4. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass der erste Elektromotor (16) in einer Ausnehmung (14) der ersten Antriebswelle (11) angeordnet ist.4. Hybrid drive according to claim 1, characterized in that the first electric motor (16) in a recess (14) of the first drive shaft (11) is arranged.
5. Hybridantrieb nach Anspruch 4, dadurch gekennzeichnet, dass die erste Antriebswelle (11) eine Aufweitung aufweist, in welcher der erste Elektromotor (16) angeordnet ist.5. Hybrid drive according to claim 4, characterized in that the first drive shaft (11) has a widening, in which the first electric motor (16) is arranged.
6. Hybridantrieb nach Anspruch 1, dadurch gekennzeichnet, dass das Überlagerungsgetriebe (13) als Planetengetriebe ausgestaltet ist.6. hybrid drive according to claim 1, characterized in that the superposition gear (13) is designed as a planetary gear.
7. Hybridantrieb nach Anspruch 6, dadurch gekennzeichnet, dass die erste Antriebswelle (11) mit dem Hohlrad (12) und die zweite Antriebswelle (18) mit dem Sonnenrad (19) des Planetengetriebes (13) verbunden ist.7. Hybrid drive according to claim 6, characterized in that the first drive shaft (11) with the ring gear (12) and the second drive shaft (18) with the sun gear (19) of the planetary gear (13) is connected.
8. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass der erste Rotor (15) als Läufer und ein zweiter Rotor (17) als Erreger ausgebildet sind.8. hybrid drive according to claim 1, characterized in that the first rotor (15) as a rotor and a second rotor (17) are formed as exciters.
9. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass eine Kupplung (23) zum Verbinden der ersten Antriebswelle (11) mit der zweiten Antriebswelle (18) zur Überbrückung des wenigstens einen Elektromotors (16, 25) vorgesehen ist.9. Hybrid drive according to claim 1, characterized in that a coupling (23) for connecting the first drive shaft (11) with the second drive shaft (18) for bridging the at least one electric motor (16, 25) is provided.
10. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass eine Kupplung (42) zum Verbinden der ersten Antriebswelle (11) mit einem Antriebsgehäuse (27) vorgesehen ist zum Fixieren der ersten Antriebswelle (11) bei einem Betrieb nur mit einem Elektromotor (16, 25).10. hybrid drive according to claim 1, characterized in that a coupling (42) for connecting the first drive shaft (11) with a drive housing (27) is provided for fixing the first drive shaft (11) during operation only with an electric motor (16, 25).
11. Hybridantrieb nach Anspruch 1 , dadurch gekennzeichnet, dass der wenigstens eine erste Elektromotor (16) in radialer Richtung mehrere Rotoren (15; 52) aufweist, die mit einer entsprechenden Anzahl von weiteren Rotoren (17; 53) zusammenwirken. 11. hybrid drive according to claim 1, characterized in that the at least one first electric motor (16) in the radial direction a plurality of rotors (15; 52) which cooperate with a corresponding number of further rotors (17; 53).
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CN108995542A (en) * 2018-09-06 2018-12-14 广西玉柴机器股份有限公司 Motor integrated electric automobile distance increasing unit
EP3923457A4 (en) * 2019-02-07 2022-03-23 Panasonic Intellectual Property Management Co., Ltd. Magnetic geared motor

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