WO2021219292A1 - Procédé permettant d'actionner une chaîne cinématique d'un véhicule automobile électrique - Google Patents

Procédé permettant d'actionner une chaîne cinématique d'un véhicule automobile électrique Download PDF

Info

Publication number
WO2021219292A1
WO2021219292A1 PCT/EP2021/057181 EP2021057181W WO2021219292A1 WO 2021219292 A1 WO2021219292 A1 WO 2021219292A1 EP 2021057181 W EP2021057181 W EP 2021057181W WO 2021219292 A1 WO2021219292 A1 WO 2021219292A1
Authority
WO
WIPO (PCT)
Prior art keywords
axle
electrical machine
drive
axis
speed
Prior art date
Application number
PCT/EP2021/057181
Other languages
German (de)
English (en)
Inventor
Bastian Gebhard
Original Assignee
Audi 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 Audi Ag filed Critical Audi Ag
Publication of WO2021219292A1 publication Critical patent/WO2021219292A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/354—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels
    • 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
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • 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
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/082—Selecting or switching between different modes of propelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/42—Electrical machine applications with use of more than one motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/50—Drive Train control parameters related to clutches
    • B60L2240/507—Operating parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/28—Four wheel or all wheel drive
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/081—Speed
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/083—Torque
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/02—Clutches
    • B60W2710/021—Clutch engagement state
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/081—Speed
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • 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
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/40—Torque distribution
    • B60W2720/403—Torque distribution between front and rear axle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the invention relates to a method for operating a drive train of an electrically powered motor vehicle (electric car) with a first axle driven by at least one first electric machine and with a second axle driven by at least one second electric machine, wherein the second axle can be switched on and off and furthermore has a separating clutch with which the power flow between the wheels (the second axle) and the second electric machine or the axle drive (the second axle) can be interrupted.
  • the invention also relates to a control device for such a drive train.
  • the drive train (10) has a drive motor (22) designed as an internal combustion engine or as an electrical machine, a first axle (36) that can be driven by the drive motor (22) and one that can also be driven by this drive motor (22) via a first clutch (12) second axis (44), the second axis (44) being decoupled from the drive motor (22) with the aid of the first coupling (12) when the four-wheel drive is switched off.
  • the second axle (44) has a second clutch (52) which is opened when the four-wheel drive is switched off, so that the cardan shaft (54) leading from the first clutch (12) to the second axle (44) is shut down and neither from the Wheels (46, 48) of the uncoupled axle (44) is still driven by the drive motor (22). This enables a particularly efficient two-wheel drive to be achieved.
  • the invention in a drive train of the type mentioned at the outset with at least one first electrical machine for driving the first axis and with at least one second electrical machine for driving the second axis is a jolt-free and, in particular, largely noise-free
  • the second axis can be switched on and off during ferry operations.
  • the invention provides that to switch off the second axis, i. H.
  • second axis wherein the drive torque of the first electrical machine increases successively and at the same time the drive torque of the second electrical machine in the same measure, d. H. the increase in drive power on the first axle is successively reduced until (finally) the first axle takes over the entire drive or propulsion power (of the vehicle);
  • the second electrical machine turns off or turns off after the disconnecting clutch is opened, in particular to a standstill, with electrical energy preferably being recuperated (from the mechanical energy) and, in particular, being fed to a vehicle battery.
  • the invention also provides that for connecting or reconnecting the second axis, i. H. When changing from single-axle mode or two-wheel drive to two-axle mode or four-wheel drive, the following steps must be carried out in this order during ferry operation:
  • a safety check can be carried out to ensure that the separating clutch is properly opened or closed. This can be done, for example, with the help of position sensors that are installed on the separating coupling. Alternatively, the check can take place with the aid of a test torque generated by the second electrical machine and the plausibility check of the rotational speeds that are then measured or recorded.
  • the second axle or the final drive can be switched off and / or switched on automatically depending on the driving situation, in particular with the help of a central control unit or a main control unit (ECU), which continuously checks during the ferry operation whether the vehicle is better in single-axle mode or two-wheel drive or should be moved in two-axis mode or four-wheel drive.
  • ECU main control unit
  • the following can be used as a basis for decision-making: wheel speeds, speeds of the electrical machines, accelerator pedal position, brake pedal position, weather conditions (e.g. temperature and humidity), GPS data (for forecasting the further course of the road) and the like, including their gradients.
  • Switching off and / or on can also be done at the driver's request or triggered manually by the driver.
  • a disconnection and / or connection according to the invention is preferably controlled or coordinated in both cases by a main control unit (ECU) of the drive train.
  • Fig. 1 shows a schematic representation of a drive train of a motor vehicle.
  • FIG. 2 illustrates in a schematic diagram the switching off of the second axle on the drive train of FIG. 1.
  • FIG. 3 illustrates in a schematic diagram the connection of the second axle to the drive train of FIG. 1.
  • the drive train 100 comprises a first axle 110 and a second axle 120, which are designed as a front and flinter axle in accordance with the direction of travel F.
  • the first axle 110 is driven by a first electric machine (first electric machine) 112, which is connected to the wheels (front wheels) 116 and 117 via a gear stage 113 and a differential gear 114, the electric machine 112, the gear stage 113 and the differential gear 114 form an axle drive for the first axle or front axle 110.
  • the second axle 120 is driven by a second electric machine (second electric machine) 122, which is connected to the wheels (flint wheels) 126 and 127 via a gear stage 123 and a differential gear 124, the electric machine 122, the gear stage 123 and the differential gear 124 form an axle drive for the second axle or Flinter axle 120, which is essentially independent of the axle drive of the first axle 110.
  • the second axle 120 also has a separating clutch 125 with an actuator (separating clutch actuator) 125a, with which the power flow between the wheels 126, 127 and the second electrical machine 122 or the axle drive can be interrupted.
  • the coupling elements of the separating coupling 125 are, for example, designed as coupling claws with face or face gears.
  • the second axle 120 can be switched on and off during the ferry operation of the motor vehicle 10, whereby the drive train 100 can optionally be operated in two-axle mode or four-wheel drive or in single-axle mode or two-wheel drive.
  • the disconnection and connection of the second axis or flinter axis according to the invention is described below with reference to FIGS. 2 and 3 120, the explanations apply mutatis mutandis to a drive train in which the front axle is formed as a second axle that can be switched on and off. Switching on and off is quick and takes place in the millisecond range, i.e. takes place in a fraction of a second.
  • the disconnection and connection of the second axis 120 is controlled by a main control unit (ECU) 130, which in this case functions as a kind of coordinator.
  • the main control device 130 is designed accordingly and, in particular, is equipped with suitable software.
  • the main control unit 130 communicates (for example via a CAN bus) with the power electronics 111 of the first electrical machine 112, with the power electronics 121 of the second electrical machine 122 and with the separating clutch 125 or with its actuator 125a.
  • the main control device 130 is furthermore connected to various sensors with which, for example, rotational speeds and positions can be measured or detected, and possibly also to other control devices.
  • a redistribution or shifting of the drive or drive power begins at time ti by increasing the drive power on the first axle 110 and reducing the drive power on the second axle 120 by increasing the drive torque M T of the first electrical machine 112 is gradually increased and at the same time the drive torque M 2 of the second electrical machine 122 is successively reduced or reduced to the same extent, so that the entire drive or propulsive power M tot remains essentially unchanged (provided that the motor vehicle is not accelerating or decelerating at the same time 10 takes place, which can be taken into account accordingly).
  • the drive torque M 2 is reduced on the second axle 120 to be switched off to the same extent as the drive torque M T is built up on the first axle 110, which is still driving.
  • the first axle 110 has taken over the entire drive or propulsion power.
  • a zero torque control is now carried out on the second axis 120 (t 2 to t 3 ), the power loss generated by dragging the second axis 120 being compensated for with the aid of the second electrical machine 122, so that no torque is applied to the separating clutch 125 more can be transmitted and this can therefore be opened without jerks and largely without force.
  • the separating clutch 125 is then opened by the actuator 125a (t 3 to t4), whereby any flow of force or torque between the rotating wheels 126, 127 and the second electrical machine 122 or the rotating wheels is interrupted 126, 127 are decoupled from the final drive and only the differential gear 124 rotates without significant resistance. This realizes a particularly efficient two-wheel drive.
  • the second electric machine 122 can turn off from time t 4 , its speed n 2 reducing to a standstill (time ts) (provided that the second axis 120 is not switched on again during this time).
  • the speed n 2 of the second electrical machine 122 is preferably reduced or reduced only after a safety check (see above) in order to ensure that the separating clutch 125 is open.
  • electrical energy can be recuperated by the second electrical machine 122.
  • a braking effect that shortens the turning-out or stopping time can also be generated.
  • the switching on of the second axle 120 is initiated at time T 0 , this being done automatically or at the driver's request.
  • the target speed n so n thus results from the current speed of the wheels 126, 127, corrected by the ratio of the axle ratio. Meanwhile, the setpoint speed n SOii can be checked and, if necessary, adapted to a changed driving situation or updated accordingly.
  • the speeds n 2 and n SOii can be monitored and, if necessary, adjusted.
  • a safety check (see above) is preferably carried out in order to ensure that the separating clutch 125 is closed. Since after (ie from T 3 or after the safety check) the second electrical machine 122 can be used to drive the motor vehicle 10 or also for recuperation or to brake the motor vehicle 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

L'invention concerne un procédé permettant d'actionner une chaîne cinématique (100) d'un véhicule automobile électrique (10) présentant un premier axe (110) entraîné par au moins une première machine électrique (112) et présentant un second axe (120) entraîné par au moins une seconde machine électrique (122), le second axe (120) pouvant être activé et désactivé et présentant un embrayage de coupure (125) au moyen duquel le flux de force entre les roues (126, 127) et la seconde machine électrique (122) peut être interrompu. Le procédé selon l'invention comprend une pluralité d'étapes de désactivation du second axe (120) et/ou une pluralité d'étapes d'activation du second axe (120) pendant que le véhicule automobile (10) est conduit. L'invention concerne également un dispositif de commande (130) pour une chaîne cinématique correspondante (100), ledit dispositif de commande étant approprié pour la mise en œuvre du procédé selon l'invention.
PCT/EP2021/057181 2020-04-29 2021-03-22 Procédé permettant d'actionner une chaîne cinématique d'un véhicule automobile électrique WO2021219292A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020111605.5A DE102020111605A1 (de) 2020-04-29 2020-04-29 Verfahren und Steuergerät zum Betreiben eines Antriebsstrangs eines elektrisch angetriebenen Kraftwagens
DE102020111605.5 2020-04-29

Publications (1)

Publication Number Publication Date
WO2021219292A1 true WO2021219292A1 (fr) 2021-11-04

Family

ID=75277980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/057181 WO2021219292A1 (fr) 2020-04-29 2021-03-22 Procédé permettant d'actionner une chaîne cinématique d'un véhicule automobile électrique

Country Status (2)

Country Link
DE (1) DE102020111605A1 (fr)
WO (1) WO2021219292A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022205246A1 (de) 2022-05-25 2023-11-30 Volkswagen Aktiengesellschaft Verfahren zum Betreiben einer elektrischen Maschine eines Antriebstrangs
DE102022117410A1 (de) 2022-07-13 2024-01-18 Audi Aktiengesellschaft Verfahren zur Ermittlung einer einen, insbesondere tribologischen, Zustand eines Antriebsstrangs beschreibenden Zustandsinformation und Kraftfahrzeug
DE102022129429A1 (de) * 2022-11-08 2024-05-08 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zum Ankoppeln einer elektrischen Maschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120253577A1 (en) * 2009-12-17 2012-10-04 Peugeot Citroen Automobiles Sa Method for Disconnecting an Electrical Machine on a Running Gear of a Vehicle, in Particular a Hybrid Motor Vehicle
DE102016114743A1 (de) * 2016-08-09 2018-02-15 Volkswagen Aktiengesellschaft Verfahren zum Betreiben eines hybriden Antriebssystems und Kraftfahrzeug mit hybridem Antriebssystem
US20190001952A1 (en) * 2017-06-29 2019-01-03 Subaru Corporation Control apparatus for vehicle and control method for vehicle
DE102017215477B4 (de) 2017-09-04 2019-03-21 Audi Ag Verfahren zum Betreiben eines Antriebsstrangs eines Kraftwagens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222348A1 (de) 2012-12-05 2014-06-05 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Aktivieren eines Segelmodus in einem Kraftfahrzeug
DE102015105135B4 (de) 2015-04-02 2022-12-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektrisch antreibbares Allrad-Kraftfahrzeug und Verfahren zum Betrieb eines elektrisch antreibbaren Allrad-Kraftfahrzeugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120253577A1 (en) * 2009-12-17 2012-10-04 Peugeot Citroen Automobiles Sa Method for Disconnecting an Electrical Machine on a Running Gear of a Vehicle, in Particular a Hybrid Motor Vehicle
DE102016114743A1 (de) * 2016-08-09 2018-02-15 Volkswagen Aktiengesellschaft Verfahren zum Betreiben eines hybriden Antriebssystems und Kraftfahrzeug mit hybridem Antriebssystem
US20190001952A1 (en) * 2017-06-29 2019-01-03 Subaru Corporation Control apparatus for vehicle and control method for vehicle
DE102017215477B4 (de) 2017-09-04 2019-03-21 Audi Ag Verfahren zum Betreiben eines Antriebsstrangs eines Kraftwagens

Also Published As

Publication number Publication date
DE102020111605A1 (de) 2021-11-04

Similar Documents

Publication Publication Date Title
WO2021219292A1 (fr) Procédé permettant d'actionner une chaîne cinématique d'un véhicule automobile électrique
DE102004054592B4 (de) Verfahren und System zum Steuern regenerativen Bremsens eines Elektrofahrzeugs mit Allradantrieb
EP0224144B1 (fr) Véhicule comprenant un essieu moteur principal et un essieu moteur additionnel
EP2560835A1 (fr) Dispositif d'entraînement pour un véhicule à transmission intégrale et procédé de répartition du couple de traction sur une traction avant et une traction arrière
WO2018150009A1 (fr) Unité d'entraînement d'essieu dotée d'un système de direction, essieu moteur et véhicule à moteur
EP2349801B1 (fr) Procédé et dispositif pour le démarrage d'un véhicule hybride
DE102015118759A1 (de) Verfahren zur Steuerung eines Antriebsmoments und Antriebsstranganordnung zur Durchführung des Verfahrens
DE19880915B4 (de) Kraftfahrzeug mit einer Vorrichtung zur automatisierten Betätigung einer Kupplung sowie Verfahren
DE19919454C2 (de) Fahrzeugantriebseinrichtung
DE19954544A1 (de) Kraftfahrzeugantrieb
DE102016223186A1 (de) Allradsystem für ein Kraftfahrzeug und Verfahren zum Betreiben eines Allradsystems eines Kraftfahrzeugs
DE102017211255A1 (de) Vorrichtung für Hinterradantrieb eines umweltfreundlichen Fahrzeugs
WO2020173514A1 (fr) Procédé pour faire fonctionner une chaîne cinématique hybride
WO2014094758A1 (fr) Commande d'embrayage
WO2018104044A1 (fr) Véhicule hybride
WO2018138008A1 (fr) Ensemble d'entraînement pour un véhicule automobile
DE102005025617A1 (de) Antriebssystem für ein Kraftfahrzeug mit einem variablen Allradantrieb
DE19747925B4 (de) Vorrichtung und Verfahren zur automatisierten Betätigung einer Kupplung im Antriebsstrang eines Kraftfahrzeugs
DE102007019988A1 (de) Allradgetriebener Personenkraftwagen mit Hybridantrieb und elektrischem Allradbetrieb
DE102011009228A1 (de) Kraftfahrzeug mit einem Hybridantriebstrang
DE102010015424A1 (de) Antriebsvorrichtung für ein allradgetriebenes Fahrzeug
CH702190A2 (de) Einheit zum ausrüsten eines fahrzeuges mit verbrennungsmotor zu einem fahrzeug mit hybridantrieb.
DE10242605A1 (de) Hybridantrieb
DE102017103400A1 (de) Achsantriebseinheit mit Lenkanlage, Antriebsachse und Kraftfahrzeug
DE102011018395A1 (de) Verfahren zur Steuerung und/oder Regelung einer Kupplung in einem Antriebsstrang eines Hybridfahrzeuges

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21715167

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 21715167

Country of ref document: EP

Kind code of ref document: A1