EP1931528A1 - Hybrid drive train of a motor vehicle - Google Patents

Hybrid drive train of a motor vehicle

Info

Publication number
EP1931528A1
EP1931528A1 EP06791656A EP06791656A EP1931528A1 EP 1931528 A1 EP1931528 A1 EP 1931528A1 EP 06791656 A EP06791656 A EP 06791656A EP 06791656 A EP06791656 A EP 06791656A EP 1931528 A1 EP1931528 A1 EP 1931528A1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
short
electric
drive
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Withdrawn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
EP06791656A
Other languages
German (de)
French (fr)
Inventor
Bernd-Guido Schulze
Markus Henke
Sven Martin
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1931528A1 publication Critical patent/EP1931528A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • 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
    • B60K6/42—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
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    • 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
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    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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

Definitions

  • the invention relates to a hybrid drive train of a motor vehicle, comprising a serial arrangement of an internal combustion engine, a first operated as a generator first electric machine, a predominantly operable as an electric second electric machine, and a final drive, and with a switchable via lines and power electronics with the two electric traction battery and a controller for controlling the flow of energy between the electric machines and the driving battery.
  • a hybrid powertrain of a motor vehicle is understood to mean a drive train with a hybrid drive, which consists of a combination of an internal combustion engine and an electric motor, wherein the electric motor can be supplied either from an entrained running battery or from a contact wire via current collectors.
  • a hybrid drive which consists of a combination of an internal combustion engine and an electric motor, wherein the electric motor can be supplied either from an entrained running battery or from a contact wire via current collectors.
  • a parallel hybrid drive which is known for example from DE 102 48 715 A1 and DE 101 58 536 B4
  • the internal combustion engine and the electric motor in parallel arrangement on the final drive are effective, i. the motor vehicle in question can be driven either directly by the internal combustion engine or the electric motor or jointly by both drive motors.
  • a disadvantage of this design is that for start-up and driving with the engine, a starting clutch and a driving gear is required, resulting in a large space requirement and high weight of the drive train.
  • the internal combustion engine drives a generator via which, in conjunction with a traction battery, an electric motor connected to the final drive is fed.
  • the direct drive of the motor vehicle thus always takes place via the electric motor, wherein the internal combustion engine but if necessary, for. B. when driving on inner city areas with emission restrictions, can be turned off, so that the electric motor is then fed only from the drive battery.
  • An advantage of this design is that a starting clutch and a driving gear are not required and can be saved, resulting in a low space requirement and a low weight of the drive train l results.
  • a disadvantage of this design is the two-fold energy conversion mechanical-electrical and electrical-mechanical between the engine, the generator, and the electric motor, resulting in a relatively poor efficiency result.
  • the electric motor is usually operated at higher speeds in an unfavorable operating range.
  • the problem is solved according to the invention in conjunction with the preamble of claim 1, characterized in that the two electric machines in an electromagnetic transmission with an input shaft connected to a rotatably mounted drive rotor, connected to an output shaft, rotatably mounted output rotor, and with a common rotatably connected to a housing member and axially displaceably mounted stator are summarized, wherein the drive rotor and the output rotor axially adjacent in a cylindrical arrangement each circumferentially distributed permanent magnets with alternating polarity, and wherein the stator in a radially adjacent arrangement to the permanent magnets of the rotors at least one short-circuit winding has, which is associated with an associated power electronics, wherein the effective transmission ratio is adjustable by an axial displacement of the stator relative to the rotors.
  • the electromagnetic gear used can, as known from DE 44 08 719 C1 and DE 101 63 226 A1, be designed as an external rotor, in which the stator is arranged radially inwardly, the short-circuit winding is arranged radially on the outside of the stator Drive rotor and the output rotor are arranged radially outboard, and the permanent magnets are arranged on the short-circuit winding facing radial inner side of the rotors.
  • the relevant electromagnetic transmission can also be designed as an inner rotor with a radially outer stator and with radially inner rotors, in which the short-circuit winding is arranged radially inward on the stator, and the permanent magnets are arranged on the short-circuit winding facing radial outer side on the rotors ,
  • the driving battery is expedient via a controllable DC-DC converter with the short-circuit winding of the stator in combination.
  • the traction battery usually has a higher voltage level than the electrical system and the on-board battery with the usual 12 volts. It is therefore advantageous if the traction battery is connected via a controllable DC-DC converter with the electrical system and the on-board battery. As a result, the on-board battery can be charged from the drive battery as needed and a separate generator for the electrical system can be saved.
  • a further drivable axle can be provided with an associated electric motor, which can be connected as needed to the traction battery and / or the short-circuit winding of the stator.
  • the connection of the further drive axle can be done, for example, depending on the traction of the main drive axle.
  • the electric start of the internal combustion engine during vehicle standstill can take place in that the stator is completely displaced in or on the drive rotor, and the drive rotor is operated in conjunction with the short-circuit winding as an electric motor.
  • the stator is initially placed completely in or on the drive rotor and subsequently moved in the direction of the output rotor, wherein the drive rotor is operated in conjunction with the short-circuit winding as a generator and the output rotor in conjunction with the short-circuit winding as an electric motor.
  • the stator can be moved in the direction of the output rotor to compensate for the thus changed transmission ratio of the electromagnetic transmission.
  • the stator For electric driving when the internal combustion engine is switched off, the stator is moved completely into or onto the output rotor and subsequently the output rotor in conjunction with the short-circuit winding is operated as an electric motor.
  • FIG. 1 shows the schematic structure of a hybrid powertrain according to the invention.
  • a hybrid drive train 1 according to FIG. 1 has a serial arrangement of an internal combustion engine 2, an electric machine 3, and an axle drive 4 of a drive axle 5.
  • the electric machine 3 is formed as an electromagnetic gear 6 with a drive rotor 7, an output rotor 8, and a rotatably and axially displaceably mounted stator 9.
  • the rotors 7, 8 are each provided with circumferentially distributed permanent magnets of alternating polarity.
  • the stator 9 has at least one axially and circumferentially extending short-circuit winding, which occurs in a rotation of the rotors 7, 8 with the permanent magnet in electromagnetic interaction.
  • the electromagnetic gear 6 thus represents a combination of a generator and an electric motor.
  • a control unit 10 for adjusting the axial position of the stator 9 with an associated Actuator 11 and for detecting the state of charge of a traction battery 12 with this in conjunction.
  • the traction battery 12 is in turn connected via electrical lines and power electronics 13, which is associated with at least one DC-DC converter 14, both with the arranged on the stator 9 short-circuit winding as well as with the electrical system 15 and der Bordbatterie 16 inroch.
  • the on-board battery 16 can be charged as needed without an additional generator.

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Abstract

The invention relates to a hybrid drive train of a motor vehicle, having a series arrangement of an internal combustion engine, a first electric machine which can be operated predominantly as a generator, a second electric machine which can be operated predominantly as an electric motor, and a final drive, and having a driving battery which can be connected to the two electric machines via switchable lines and an electronic power system, and having a control unit for controlling the energy flow between the electric machines and the driving battery. In order to achieve compact dimensions and improved efficiency, there is provision for the two electric machines to be combined in an electromagnetic gear mechanism (6) having a rotatably mounted drive rotor (7) which is connected to an input shaft, having a rotatably mounted output rotor (8) which is connected to an output shaft, and having a common stator (9) which is connected fixedly in terms of rotation to a housing component and is mounted such that it is axially displaceable, wherein the drive rotor (7) and the output rotor (8) have permanent magnets with changing polarity which are distributed in each case on the circumference, in an axially adjacent manner in a cylindrical arrangement, and wherein the stator (9), in a radially adjacent arrangement to the permanent magnets of the rotors (7, 8), has at least one squirrel-cage winding which is connected to an associated electronic power system (13):, wherein the effective transmission ratio can be set by an axial displacement of the stator (9) relative to the rotors (7, 8).

Description

Beschreibung description
Hybridantriebsstrang eines KraftfahrzeugsHybrid powertrain of a motor vehicle
Die Erfindung betrifft einen Hybridantriebsstrang eines Kraftfahrzeugs, mit einer seriellen Anordnung eines Verbrennungsmotors, einer vorwiegend als Generator betreibbaren ersten Elektromaschine, einer vorwiegend als Elektromotor betreibbaren zweiten Elektromaschine, und eines Achsantriebs, und mit einem über schaltbare Leitungen und eine Leistungselektronik mit den beiden Elektromaschinen verbindbaren Fahrbatterie sowie einem Steuergerät zur Steuerung des Energieflusses zwischen den Elektromaschinen und der Fahrbatterie.The invention relates to a hybrid drive train of a motor vehicle, comprising a serial arrangement of an internal combustion engine, a first operated as a generator first electric machine, a predominantly operable as an electric second electric machine, and a final drive, and with a switchable via lines and power electronics with the two electric traction battery and a controller for controlling the flow of energy between the electric machines and the driving battery.
Unter einem Hybridantriebsstrang eines Kraftfahrzeugs wird ein Antriebsstrang mit einem Hybridantrieb verstanden, der aus einer Kombination eines Verbrennungsmotors und eines Elektromotors besteht, wobei der Elektromotor entweder aus einer mitgeführten Fahrbatterie oder über Stromabnehmer aus einem Fahrdraht versorgt werden kann. Entsprechend der antriebstechnischen Anordnung des Verbrennungsmotors und des Elektromotors wird zwischen einem seriellen und einem parallelen Hybridantrieb unterschieden.A hybrid powertrain of a motor vehicle is understood to mean a drive train with a hybrid drive, which consists of a combination of an internal combustion engine and an electric motor, wherein the electric motor can be supplied either from an entrained running battery or from a contact wire via current collectors. According to the drive engineering arrangement of the internal combustion engine and the electric motor, a distinction is made between a serial and a parallel hybrid drive.
Bei einem parallelen Hybridantrieb, der beispielsweise aus der DE 102 48 715 A1 und der DE 101 58 536 B4 bekannt ist, sind der Verbrennungsmotor und der Elektromotor in paralleler Anordnung auf den Achsantrieb wirksam, d.h. das betreffende Kraftfahrzeug kann wahlweise unmittelbar von dem Verbrennungsmotor oder dem Elektromotor oder gemeinsam von beiden Antriebsmotoren angetrieben werden. Nachteilig an dieser Auslegung ist jedoch, dass für das Anfahren und den Fahrbetrieb mit dem Verbrennungsmotor eine Anfahrkupplung und ein Fahrgetriebe erforderlich ist, wodurch sich ein großer Bauraumbedarf und ein hohes Gewicht des Antriebsstrangs ergeben.In a parallel hybrid drive, which is known for example from DE 102 48 715 A1 and DE 101 58 536 B4, the internal combustion engine and the electric motor in parallel arrangement on the final drive are effective, i. the motor vehicle in question can be driven either directly by the internal combustion engine or the electric motor or jointly by both drive motors. A disadvantage of this design, however, is that for start-up and driving with the engine, a starting clutch and a driving gear is required, resulting in a large space requirement and high weight of the drive train.
Bei einem seriellen Hybridantrieb treibt der Verbrennungsmotor dagegen einen Generator an, über den in Verbindung mit einer Fahrbatterie ein mit dem Achsantrieb verbundener Elektromotor gespeist wird. Der unmittelbare Antrieb des Kraftfahrzeugs erfolgt somit immer über den Elektromotor, wobei der Verbrennungsmotor aber bedarfsweise, z. B. beim Befahren von Innenstadtbereichen mit Emissionsbeschränkungen, abgestellt werden kann, so dass der Elektromotor dann nur aus der Fahrbatterie gespeist wird. Vorteilhaft ist an dieser Auslegung, dass eine Anfahrkupplung und ein Fahrgetriebe nicht erforderlich sind und eingespart werden können, was einen geringen Bauraumbedarf und ein niedriges Gewicht des Antriebsstrangs l ergibt. Nachteilig bei dieser Auslegung ist jedoch die zweifache Energieumwandlung mechanisch-elektrisch und elektrisch-mechanisch zwischen dem Verbrennungsmotor, dem Generator, und dem Elektromotor, was einen relativ schlechten Wirkungsgrad zur Folge hat. Des Weiteren wird der Elektromotor bei größeren Fahrgeschwindigkeiten zumeist in einem ungünstigen Betriebsbereich betrieben.In a serial hybrid drive, however, the internal combustion engine drives a generator via which, in conjunction with a traction battery, an electric motor connected to the final drive is fed. The direct drive of the motor vehicle thus always takes place via the electric motor, wherein the internal combustion engine but if necessary, for. B. when driving on inner city areas with emission restrictions, can be turned off, so that the electric motor is then fed only from the drive battery. An advantage of this design is that a starting clutch and a driving gear are not required and can be saved, resulting in a low space requirement and a low weight of the drive train l results. A disadvantage of this design, however, is the two-fold energy conversion mechanical-electrical and electrical-mechanical between the engine, the generator, and the electric motor, resulting in a relatively poor efficiency result. Furthermore, the electric motor is usually operated at higher speeds in an unfavorable operating range.
Es ist daher das Problem der vorliegenden Erfindung, einen seriellen Hybridantriebsstrang eines Kraftfahrzeugs der eingangs genannten Art vorzuschlagen, der bei kompakten Abmessungen einen verbesserten Wirkungsgrad aufweist.It is therefore the problem of the present invention to propose a serial hybrid powertrain of a motor vehicle of the type mentioned, which has an improved efficiency with compact dimensions.
Des Weiteren soll ein Verfahren zur Steuerung des erfindungsgemäßen Antriebsstrangs angegeben werden.Furthermore, a method for controlling the drive train according to the invention is to be specified.
Das Problem wird erfindungsgemäß in Verbindung mit dem Oberbegriff des Anspruchs 1 dadurch gelöst, dass die beiden Elektromaschinen in einem elektromagnetischen Getriebe mit einem mit einer Eingangswelle verbundenen, drehbar gelagerten Antriebsrotor, mit einem mit einer Ausgangswelle verbundenen, drehbar gelagerten Abtriebsrotor, und mit einem gemeinsamen, drehfest mit einem Gehäusebauteil verbundenen und axial verschiebbar gelagerten Stator zusammengefasst sind, wobei der Antriebsrotor und der Abtriebsrotor axial benachbart in zylindrischer Anordnung jeweils umfangsseitig verteilte Permanentmagnete mit wechselnder Polarität aufweisen, und wobei der Stator in einer radial benachbarten Anordnung zu den Permanentmagneten der Rotoren mindestens eine Kurzschlusswicklung aufweist, die mit einer zugeordneten Leistungselektronik in Verbindung steht, wobei das wirksame Übersetzungsverhältnis durch eine Axialverschiebung des Stators relativ zu den Rotoren einstellbar ist.The problem is solved according to the invention in conjunction with the preamble of claim 1, characterized in that the two electric machines in an electromagnetic transmission with an input shaft connected to a rotatably mounted drive rotor, connected to an output shaft, rotatably mounted output rotor, and with a common rotatably connected to a housing member and axially displaceably mounted stator are summarized, wherein the drive rotor and the output rotor axially adjacent in a cylindrical arrangement each circumferentially distributed permanent magnets with alternating polarity, and wherein the stator in a radially adjacent arrangement to the permanent magnets of the rotors at least one short-circuit winding has, which is associated with an associated power electronics, wherein the effective transmission ratio is adjustable by an axial displacement of the stator relative to the rotors.
Durch die Kombination des bislang, z.B. aus der DE 44 08 719 C1 und der DE 101 63 226 A1 , als stufenloses Getriebe bekannten elektromagnetischen Getriebes mit einem Verbrennungsmotor, einer Fahrbatterie, und einer Leistungselektronik wird ein leistungsfähiger Hybridantriebsstrang gebildet, der aufgrund seiner erweiterten Steuerungsmöglichkeiten im Vergleich zu bekannten parallelen Hybridantriebssträngen einen verbesserten Wirkungsgrad aufweist. Mit dem erfindungsgemäßen Hybridantriebsstrang können einerseits über die Einstellung des Stators und andererseits über eine Energiezufuhr bzw. Energieabfuhr zwischen der Kurzschlusswicklung und der Fahrbatterie alle bekannten Hybridfunktionen, wie z. B. Boosten, Rekuperieren, Lastpunktanhebung oder -absenkung, Start-Stopp-Betrieb, periodisches Beschleunigen und Ausrollen, elektrisches Starten des Verbrennungsmotors, und elektrisches Fahren, durchgeführt werden. Das verwendete elektromagnetische Getriebe kann, wie aus der DE 44 08 719 C1 und der DE 101 63 226 A1 bekannt ist, als ein Außenläufer ausgebildet sein, bei dem der Stator radial innenliegend angeordnet ist, die Kurzschlusswicklung radial außen auf dem Stator angeordnet ist, der Antriebsrotor und der Abtriebsrotor radial außenliegend angeordnet sind, und die Permanentmagnete auf der der Kurzschlusswicklung zugewandten radialen Innenseite an den Rotoren angeordnet sind. Das betreffende elektromagnetische Getriebe kann aber auch als ein Innenläufer mit einem radial außenliegenden Stator und mit radial innenliegenden Rotoren ausgebildet sein, bei dem die Kurzschlusswicklung radial innen an dem Stator angeordnet ist, und die Permanentmagneten auf der der Kurzschlusswicklung zugewandten radialen Außenseite auf den Rotoren angeordnet sind.Through the combination of the previously known, for example from DE 44 08 719 C1 and DE 101 63 226 A1, known as continuously variable transmission electromagnetic transmission with an internal combustion engine, a traction battery, and power electronics, a powerful hybrid powertrain is formed, due to its advanced control options in Compared to known parallel hybrid powertrains improved efficiency. With the hybrid powertrain according to the invention, on the one hand on the setting of the stator and on the other hand via an energy supply or energy dissipation between the short-circuit winding and the driving battery all known hybrid functions such. Boost, Rekuperieren, load point raising or lowering, start-stop operation, periodic acceleration and coasting, electric starting of the engine, and electric driving, are performed. The electromagnetic gear used can, as known from DE 44 08 719 C1 and DE 101 63 226 A1, be designed as an external rotor, in which the stator is arranged radially inwardly, the short-circuit winding is arranged radially on the outside of the stator Drive rotor and the output rotor are arranged radially outboard, and the permanent magnets are arranged on the short-circuit winding facing radial inner side of the rotors. However, the relevant electromagnetic transmission can also be designed as an inner rotor with a radially outer stator and with radially inner rotors, in which the short-circuit winding is arranged radially inward on the stator, and the permanent magnets are arranged on the short-circuit winding facing radial outer side on the rotors ,
Da, abhängig von der Antriebsdrehzahl, d.h. der Drehzahl des Verbrennungsmotors, und der axialen Position des Stators in der Kurzschlusswicklung Spannungen und Ströme unterschiedlicher Höhe und Pulsfrequenzen auftreten, steht die Fahrbatterie zweckmäßig über einen steuerbaren Gleichspannungswandler mit der Kurzschlusswicklung des Stators in Verbindung.Since, depending on the drive speed, i. the speed of the engine, and the axial position of the stator in the short-circuit winding voltages and currents of different levels and pulse frequencies occur, the driving battery is expedient via a controllable DC-DC converter with the short-circuit winding of the stator in combination.
Zur Begrenzung der Leitungsverluste und der Baugröße weist die Fahrbatterie üblicherweise ein höheres Spannungsniveau auf als das Bordnetz und die Bordbatterie mit den üblichen 12 Volt. Es ist daher vorteilhaft, wenn die Fahrbatterie über einen steuerbaren Gleichspannungswandler mit dem Bordnetz und der Bordbatterie in Verbindung steht. Hierdurch kann die Bordbatterie bedarfsweise aus der Fahrbatterie aufgeladen werden und ein separater Generator für das Bordnetz eingespart werden.To limit the line losses and the size of the traction battery usually has a higher voltage level than the electrical system and the on-board battery with the usual 12 volts. It is therefore advantageous if the traction battery is connected via a controllable DC-DC converter with the electrical system and the on-board battery. As a result, the on-board battery can be charged from the drive battery as needed and a separate generator for the electrical system can be saved.
Zur Realisierung eines zuschaltbaren Allradantriebs kann eine weitere antreibbare Achse mit einem zugeordneten Elektromotor vorgesehen sein, der bedarfsweise mit der Fahrbatterie und/oder der Kurzschlusswicklung des Stators verbunden werden kann. Die Zuschaltung der weiteren Antriebsachse kann beispielsweise in Abhängigkeit der Traktion der Hauptantriebsachse erfolgen.To realize a switchable four-wheel drive, a further drivable axle can be provided with an associated electric motor, which can be connected as needed to the traction battery and / or the short-circuit winding of the stator. The connection of the further drive axle can be done, for example, depending on the traction of the main drive axle.
Mit dem erfindungsgemäßen Hybridantriebsstrang kann der Elektrostart des Verbrennungsmotors bei Fahrzeugstillstand dadurch erfolgen, dass der Stator vollständig in oder auf den Antriebsrotor verschoben wird, und der Antriebsrotor in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben wird.With the hybrid powertrain according to the invention, the electric start of the internal combustion engine during vehicle standstill can take place in that the stator is completely displaced in or on the drive rotor, and the drive rotor is operated in conjunction with the short-circuit winding as an electric motor.
Zum Anfahren aus dem Fahrzeugstillstand heraus wird der Stator zunächst vollständig in oder auf den Antriebsrotor gestellt und nachfolgend in Richtung des Abtriebsrotors verschoben, wobei der Antriebsrotor in Verbindung mit der Kurzschlusswicklung als Generator und der Abtriebsrotor in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben wird.To start from the vehicle standstill, the stator is initially placed completely in or on the drive rotor and subsequently moved in the direction of the output rotor, wherein the drive rotor is operated in conjunction with the short-circuit winding as a generator and the output rotor in conjunction with the short-circuit winding as an electric motor.
Zum Boosten oder zur Lastpunktanhebung des Verbrennungsmotors wird Energie aus der Fahrbatterie in die Kurzschlusswicklung eingespeist, wobei der Stator zur Kompensation der dadurch veränderten Übersetzung des elektromagnetischen Getriebes in Richtung des Antriebsrotors verschoben werden kann.To boost or increase the load point of the internal combustion engine, energy is fed from the traction battery into the short-circuit winding, wherein the stator can be displaced in the direction of the drive rotor to compensate for the thus changed ratio of the electromagnetic transmission.
Zum Rekuperieren oder zur Lastpunktabsenkung des Verbrennungsmotors wird Energie aus der Kurzschlusswicklung in die Fahrbatterie eingespeist, wobei der Stator zur Kompensation der dadurch veränderten Übersetzung des elektromagnetischen Getriebes in Richtung des Abtriebsrotors verschoben werden kann.For recuperation or for load point reduction of the internal combustion engine energy is fed from the short-circuit winding in the traction battery, the stator can be moved in the direction of the output rotor to compensate for the thus changed transmission ratio of the electromagnetic transmission.
Zum elektrischen Fahren bei abgestelltem Verbrennungsmotor wird der Stator vollständig in oder auf den Abtriebsrotor verschoben und nachfolgend der Abtriebsrotor in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben.For electric driving when the internal combustion engine is switched off, the stator is moved completely into or onto the output rotor and subsequently the output rotor in conjunction with the short-circuit winding is operated as an electric motor.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und der beigefügten Zeichnung, die beispielhaft zur Erläuterung der Erfindung dienen.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, which serve by way of example to illustrate the invention.
Hierzu zeigt:This shows:
Fig. 1 Den schematischen Aufbau eines erfindungsgemäßen Hybridantriebsstrangs.1 shows the schematic structure of a hybrid powertrain according to the invention.
Ein Hybridantriebsstrang 1 nach Fig. 1 weist eine serielle Anordnung eines Verbrennungsmotors 2, einer Elektromaschine 3, und eines Achsantriebs 4 einer Antriebsachse 5 auf. Die Elektromaschine 3 ist als ein elektromagnetisches Getriebe 6 mit einem Antriebsrotor 7, einem Abtriebsrotor 8, und einem drehfest und axial verschiebbar gelagerten Stator 9 ausgebildet. Die Rotoren 7, 8 sind jeweils mit umfangsseitig verteilt angeordneten Permanentmagneten wechselnder Polarität versehen. Der Stator 9 weist mindestens eine axial und umfangsseitig verlaufende Kurzschlusswicklung auf, die bei einer Drehung der Rotoren 7, 8 mit den Permanentmagneten in elektromagnetische Wechselwirkung tritt. Das elektromagnetische Getriebe 6 stellt somit eine Kombination eines Generators und eines Elektromotors dar.A hybrid drive train 1 according to FIG. 1 has a serial arrangement of an internal combustion engine 2, an electric machine 3, and an axle drive 4 of a drive axle 5. The electric machine 3 is formed as an electromagnetic gear 6 with a drive rotor 7, an output rotor 8, and a rotatably and axially displaceably mounted stator 9. The rotors 7, 8 are each provided with circumferentially distributed permanent magnets of alternating polarity. The stator 9 has at least one axially and circumferentially extending short-circuit winding, which occurs in a rotation of the rotors 7, 8 with the permanent magnet in electromagnetic interaction. The electromagnetic gear 6 thus represents a combination of a generator and an electric motor.
Zur Steuerung der verschiedenen Betriebsfunktionen des Hybridantriebsstrangs 1 steht ein Steuergerät 10 u. a. zur Einstellung der axialen Position des Stators 9 mit einem zugeordneten Stellantrieb 11 und zur Erfassung des Ladezustands einer Fahrbatterie 12 mit dieser in Verbindung. Die Fahrbatterie 12 steht ihrerseits über elektrische Leitungen und eine Leistungselektronik 13, der mindestens ein Gleichspannungswandler 14 zugeordnet ist, sowohl mit der auf dem Stator 9 angeordneten Kurzschlusswicklung als auch mit dem Bordnetz 15 bzw. der Bordbatterie 16 in Verbindung.To control the various operating functions of the hybrid drive train 1 is a control unit 10, inter alia, for adjusting the axial position of the stator 9 with an associated Actuator 11 and for detecting the state of charge of a traction battery 12 with this in conjunction. The traction battery 12 is in turn connected via electrical lines and power electronics 13, which is associated with at least one DC-DC converter 14, both with the arranged on the stator 9 short-circuit winding as well as with the electrical system 15 and der Bordbatterie 16 in Verbindung.
Durch die weitgehend beliebig schalt- und steuerbare Verbindung der Fahrbatterie 12 mit der Kurzschlusswicklung des elektromagnetischen Getriebes 6 sind durch den gesteuerten Austausch von Energie typische Hybridfunktionen, wie Boosten, Rekuperieren, und Lastpunktanhebung oder -absenkung des Verbrennungsmotors, möglich. Die Kombination des elektromagnetischen Getriebes 6 mit der Fahrbatterie 12 und der Leistungselektronik 13 bildet somit einen vollwertigen Hybridantrieb.Due to the largely arbitrary switchable and controllable connection of the drive battery 12 with the short-circuit winding of the electromagnetic transmission 6 typical hybrid functions, such as boosting, Rekuperieren, and load point increase or decrease of the internal combustion engine, are possible by the controlled exchange of energy. The combination of the electromagnetic transmission 6 with the traction battery 12 and the power electronics 13 thus forms a full hybrid drive.
Durch die Verbindung der Fahrbatterie 12 mit dem Bordnetz 15 kann die Bordbatterie 16 bedarfsweise ohne einen zusätzlichen Generator geladen werden. By connecting the driving battery 12 to the electrical system 15, the on-board battery 16 can be charged as needed without an additional generator.

Claims

Patentansprüche claims
1. Hybridantriebsstrang eines Kraftfahrzeugs, mit einer seriellen Anordnung eines Verbrennungsmotors, einer vorwiegend als Generator betreibbaren ersten Elektromaschine, einer vorwiegend als Elektromotor betreibbaren zweiten Elektromaschine, und eines Achsantriebs, und mit einem über schaltbare Leitungen und eine Leistungselektronik mit den beiden Elektromaschinen verbindbaren Fahrbatterie sowie einem Steuergerät zur Steuerung des Energieflusses zwischen den Elektromaschinen und der Fahrbatterie, dadurch gekennzeichnet, dass die beiden Elektromaschinen in einem elektromagnetischen Getriebe (6) mit einem mit einer Eingangswelle verbundenen, drehbar gelagerten Antriebsrotor (7), mit einem mit einer Ausgangswelle verbundenen, drehbar gelagerten Abtriebsrotor (8), und mit einem gemeinsamen, drehfest mit einem Gehäusebauteil verbundenen und axial verschiebbar gelagerten Stator (9) zusammengefasst sind, wobei der Antriebsrotor (7) und der Abtriebsrotor (δ) axial benachbart in zylindrischer Anordnung jeweils umfangsseitig verteilte Permanentmagnete mit wechselnder Polarität aufweisen, und wobei der Stator (9) in einer radial benachbarten Anordnung zu den Permanentmagneten der Rotoren (7, 8) mindestens eine Kurzschlusswicklung aufweist, die mit einer zugeordneten Leistungselektronik (13) in Verbindung steht, wobei das wirksame Übersetzungsverhältnis durch eine Axialverschiebung des Stators (9) relativ zu den Rotoren (7, 8) einstellbar ist.Hybrid drive train of a motor vehicle, with a serial arrangement of an internal combustion engine, a predominantly operable as a generator first electric machine, a predominantly operable as an electric second electric machine, and a final drive, and with a switchable via lines and power electronics with the two electric traction battery and a Control unit for controlling the flow of energy between the electric machines and the traction battery, characterized in that the two electric machines in an electromagnetic gear (6) connected to an input shaft, rotatably mounted drive rotor (7), connected to an output shaft, rotatably mounted output rotor (8), and with a common, non-rotatably connected to a housing member and axially displaceably mounted stator (9) are summarized, wherein the drive rotor (7) and the output rotor (δ) axially adjacent in cylindrical he arrangement each having circumferentially distributed permanent magnets with alternating polarity, and wherein the stator (9) in a radially adjacent arrangement to the permanent magnets of the rotors (7, 8) has at least one short-circuit winding, which is associated with an associated power electronics (13), wherein the effective transmission ratio is adjustable by an axial displacement of the stator (9) relative to the rotors (7, 8).
2. Hybridantriebsstrang nach Anspruch 1 , dadurch gekennzeichnet, ■ dass die Fahrbatterie (12) über einen steuerbaren Gleichspannungswandler (13) mit der Kurzschlusswicklung des Stators (9) in Verbindung steht.2. Hybrid drive train according to claim 1, characterized in that ■ the traction battery (12) via a controllable DC-DC converter (13) with the short-circuit winding of the stator (9) is in communication.
3. Hybridantriebsstrang nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Fahrbatterie (12) über einen steuerbaren Gleichspannungswandler (13) mit dem Bordnetz (15) und der Bordbatterie (16) in Verbindung steht. 3. Hybrid drive train according to claim 1 or 2, characterized in that the traction battery (12) via a controllable DC-DC converter (13) with the electrical system (15) and the on-board battery (16) is in communication.
4. Hybridantriebsstrang nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine weitere antreibbare Achse mit einem zugeordneten Elektromotor vorgesehen ist, der bedarfsweise mit der Fahrbatterie (12) und / oder der Kurzschlusswicklung des Stators (9) verbindbar ist.4. Hybrid drivetrain according to one of claims 1 to 3, characterized in that a further drivable axle is provided with an associated electric motor, which, if necessary, with the traction battery (12) and / or the short-circuit winding of the stator (9) is connectable.
5. Verfahren zur Steuerung eines Hybridantriebsstrangs gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zum Elektrostart des Verbrennungsmotors (2) bei Fahrzeugstillstand der Stator (9) vollständig in oder auf den Antriebsrotor (7) verschoben wird, und der Antriebsrotor (7) in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben wird.5. A method for controlling a hybrid powertrain according to one of claims 1 to 4, characterized in that for electric start of the internal combustion engine (2) when the vehicle is stationary, the stator (9) completely in or on the drive rotor (7) is moved, and the drive rotor (7 ) is operated in conjunction with the short-circuit winding as an electric motor.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zum Anfahren aus dem Fahrzeugstillstand heraus der Stator (9) zunächst vollständig in oder auf den Antriebsrotor (7) gestellt wird und nachfolgend in Richtung des Abtriebsrotors (8) verschoben wird, wobei der Antriebsrotor (7) in Verbindung mit der Kurzschlusswicklung als Generator und der Abtriebsrotor (8) in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben wird.6. The method according to any one of claims 1 to 5, characterized in that for starting from the vehicle standstill, the stator (9) is initially placed completely in or on the drive rotor (7) and subsequently displaced in the direction of the output rotor (8), wherein the drive rotor (7) is operated in conjunction with the short-circuit winding as a generator and the output rotor (8) in conjunction with the short-circuit winding as an electric motor.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zum Boosten oder zur Lastpunktanhebung des Verbrennungsmotors (2) Energie aus der Fahrbatterie (12) in die Kurzschlusswicklung eingespeist wird, und dass der Stator (9) zur Kompensation der dadurch veränderten Übersetzung des elektromagnetischen Getriebes (6) in Richtung des Antriebsrotors (7) verschoben wird.7. The method according to any one of claims 1 to 6, characterized in that for boosting or load point elevation of the internal combustion engine (2) energy from the traction battery (12) is fed into the short-circuit winding, and that the stator (9) to compensate for thereby changed Translation of the electromagnetic transmission (6) in the direction of the drive rotor (7) is moved.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zum Rekuperieren oder zur Lastpunktabsenkung des Verbrennungsmotors (2) Energie aus der Kurzschlusswicklung in die Fahrbatterie (12) eingespeist wird, und dass der Stator (9) zur Kompensation der dadurch veränderten Übersetzung des elektromagnetischen Getriebes (6) in Richtung des Abtriebsrotors (8) verschoben wird. 8. The method according to any one of claims 1 to 7, characterized in that for recuperation or for load point reduction of the internal combustion engine (2) energy from the short-circuit winding in the traction battery (12) is fed, and that the stator (9) to compensate for thereby changed Translation of the electromagnetic transmission (6) in the direction of the output rotor (8) is moved.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zum elektrischen Fahren bei abgestelltem Verbrennungsmotor (2) der Stator (9) vollständig in oder auf den Abtriebsrotor (8) verschoben wird und nachfolgend der Abtriebsrotor (8) in Verbindung mit der Kurzschlusswicklung als Elektromotor betrieben wird.9. The method according to any one of claims 1 to 8, characterized in that for electric driving when the internal combustion engine (2) of the stator (9) completely in or on the output rotor (8) is displaced and subsequently the output rotor (8) in conjunction with the short-circuit winding is operated as an electric motor.
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Bordbatterie (16) über einen zugeordneten Gleichspannungswandler (14) bedarfsweise aus der Fahrbatterie (12) oder aus der Kurzschlusswicklung des Stators (9) geladen wird. 10. The method according to any one of claims 1 to 9, characterized in that the on-board battery (16) via an associated DC-DC converter (14), if necessary, from the traction battery (12) or from the short-circuit winding of the stator (9) is loaded.
EP06791656A 2005-09-28 2006-08-25 Hybrid drive train of a motor vehicle Withdrawn EP1931528A1 (en)

Applications Claiming Priority (2)

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DE102005046533 2005-09-28
PCT/EP2006/008343 WO2007036275A1 (en) 2005-09-28 2006-08-25 Hybrid drive train of a motor vehicle

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EP1931528A1 true EP1931528A1 (en) 2008-06-18

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JP4473334B2 (en) 2010-06-02

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