DE102015014336A1 - Method and device for operating a vehicle - Google Patents

Method and device for operating a vehicle Download PDF

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Publication number
DE102015014336A1
DE102015014336A1 DE102015014336.0A DE102015014336A DE102015014336A1 DE 102015014336 A1 DE102015014336 A1 DE 102015014336A1 DE 102015014336 A DE102015014336 A DE 102015014336A DE 102015014336 A1 DE102015014336 A1 DE 102015014336A1
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Germany
Prior art keywords
vehicle
electric motor
drive
electric
downhill
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DE102015014336.0A
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German (de)
Inventor
Martin Schäffler
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Mercedes Benz Group AG
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Daimler AG
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Priority to DE102015014336.0A priority Critical patent/DE102015014336A1/en
Publication of DE102015014336A1 publication Critical patent/DE102015014336A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—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 for braking
    • 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
    • B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
    • 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
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/12—Dynamic electric regenerative braking for vehicles propelled by dc motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B60T13/585—Combined or convertible systems comprising friction brakes and retarders
    • B60T13/586—Combined or convertible systems comprising friction brakes and retarders the retarders being of the electric type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/24—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/24—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
    • B60T8/245—Longitudinal vehicle inclination
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B60W30/18127—Regenerative braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D61/00—Brakes with means for making the energy absorbed available for use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—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
    • B60L2240/60—Navigation input
    • B60L2240/64—Road conditions
    • B60L2240/642—Slope of road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/04—Hill descent control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/20—Road shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/60—Regenerative braking
    • B60T2270/604—Merging friction therewith; Adjusting their repartition
    • 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
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/18—Braking system
    • 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
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    • 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
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • 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
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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

Abstract

Die Erfindung betrifft ein Verfahren zum Betrieb eines Fahrzeugs (1) mit einem Antrieb (2), insbesondere einem Hybridantrieb, umfassend einen Verbrennungsmotor und einen Elektromotor, oder einem Elektroantrieb eines Elektromotors, wobei bei einer identifizierten Bergabfahrt des Fahrzeugs (1) ein Gefälle (G) ermittelt wird und anhand des Gefälles (G) ein Rekuperationsmoment (Rm) des Elektromotors derart vergrößert wird, dass eine Eigenbeschleunigung des Fahrzeugs (1) reduziert oder verhindert wird. Des Weiteren betrifft die Erfindung eine Vorrichtung zum Betrieb des Fahrzeugs (1).The invention relates to a method for operating a vehicle (1) with a drive (2), in particular a hybrid drive comprising an internal combustion engine and an electric motor, or an electric drive of an electric motor, wherein at an identified downhill of the vehicle (1) a gradient (G ) is determined and on the basis of the gradient (G) a recuperation torque (Rm) of the electric motor is increased such that an intrinsic acceleration of the vehicle (1) is reduced or prevented. Furthermore, the invention relates to a device for operating the vehicle (1).

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Betrieb eines Fahrzeugs, insbesondere zum Betrieb des Fahrzeugs bei einer Bergabfahrt oder Talfahrt, wobei das Fahrzeug mit einem Antrieb, insbesondere einem Hybridantrieb, umfassend einen Verbrennungsmotor und einen Elektromotor, oder mit einem Elektroantrieb eines Elektromotors, ausgestattet ist.The invention relates to a method and a device for operating a vehicle, in particular for operating the vehicle in a downhill or downhill, wherein the vehicle with a drive, in particular a hybrid drive, comprising an internal combustion engine and an electric motor, or equipped with an electric drive of an electric motor is.

Im Stand der Technik sind Fahrzeuge mit Hybridantrieb und reine Elektrofahrzeuge bekannt. Dabei weist ein Fahrzeug mit Hybridantrieb zumindest einen Verbrennungsmotor und einen Elektromotor auf. Ein Elektrofahrzeug weist als Elektroantrieb zumindest einen Elektromotor auf. Darüber hinaus sind Fahrzeuge mit einer Bremsanlage ausgestattet. Während einer Abbremsung des Fahrzeugs ist es bekannt, den Elektromotor über einen Generator oder den Elektromotor selbst im Generatorbetrieb zu betreiben. Die hierbei gewonnene elektrische Energie wird in ein Speichermedium, wie beispielsweise eine Bordbatterie, eingespeist und für den Antrieb des Fahrzeugs wiederverwendet.In the prior art vehicles with hybrid drive and pure electric vehicles are known. In this case, a hybrid drive vehicle has at least one internal combustion engine and one electric motor. An electric vehicle has at least one electric motor as electric drive. In addition, vehicles are equipped with a brake system. During a deceleration of the vehicle, it is known to operate the electric motor via a generator or the electric motor itself in generator mode. The electrical energy obtained in this case is fed into a storage medium, such as an onboard battery, and reused for driving the vehicle.

Der Erfindung liegt die Aufgabe zu Grunde, ein verbessertes Verfahren und eine verbesserte Vorrichtung zum Betrieb eines Fahrzeuges mit einem Antrieb, insbesondere mit einem Hybridantrieb oder mit einem Elektroantrieb, anzugeben.The object of the invention is to provide an improved method and an improved device for operating a vehicle with a drive, in particular with a hybrid drive or with an electric drive.

Die Aufgabe wird hinsichtlich des Verfahrens erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1. Hinsichtlich der Vorrichtung wird die Aufgabe erfindungsgemäß durch die im Anspruch 4 angegebenen Merkmale gelöst.The object is achieved in terms of the method according to the invention by the features of claim 1. With regard to the device, the object is achieved by the features specified in claim 4.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Beim erfindungsgemäßen Verfahren zum Betrieb eines Fahrzeugs mit einem Antrieb, insbesondere mit einem Hybridantrieb, umfassend einen Verbrennungsmotor und einen Elektromotor, oder mit einem Elektroantrieb, wird bei einer identifizierten Bergabfahrt des Fahrzeugs ein Gefälle ermittelt und anhand des Gefälles ein Rekuperationsmoment des Elektromotors derart vergrößert, dass eine Eigenbeschleunigung des Fahrzeugs reduziert oder verhindert wird.In the method according to the invention for operating a vehicle with a drive, in particular with a hybrid drive, comprising an internal combustion engine and an electric motor, or with an electric drive, a gradient is determined in an identified downhill of the vehicle and increases a recuperation of the electric motor based on the slope such that an intrinsic acceleration of the vehicle is reduced or prevented.

Die erfindungsgemäße Vorrichtung zum Betrieb des Fahrzeugs mit einem Hybridantrieb oder mit einem Elektroantrieb weist eine Steuereinheit auf, die eine Bergabfahrt des Fahrzeugs identifiziert und mit einem Neigungswinkelsensor gekoppelt ist, wobei die Steuereinheit mittels einer implementierten Regelung in Abhängigkeit von einem mittels des Neigungswinkelsensors erfassten Gefälles ein Rekuperationsmoment des Elektromotors derart vergrößert, dass eine Eigenbeschleunigung des Fahrzeugs reduziert oder verhindert wird. Bei dem Neigungswinkelsensor kann es sich um eine herkömmliche optische Messung mittels Kameras oder um ein elektronisches Neigungsmessgerät handeln. Der Neigungswinkelsensor kann ein Widerstandssensor, ein kapazitiver Sensor, ein induktiver Sensor oder ein elektrolytischer Sensor sein.The inventive device for operating the vehicle with a hybrid drive or with an electric drive has a control unit which identifies a downhill of the vehicle and is coupled to a tilt angle sensor, wherein the control unit by means of an implemented control function of a detected by means of the inclination angle gradient a recuperation of the electric motor is increased such that an intrinsic acceleration of the vehicle is reduced or prevented. The inclination angle sensor may be a conventional optical measurement by means of cameras or an electronic inclinometer. The tilt angle sensor may be a resistance sensor, a capacitive sensor, an inductive sensor or an electrolytic sensor.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere in einer Reduzierung oder Verhinderung der Eigenbeschleunigung des Fahrzeugs bei einer Bergabfahrt, wodurch eine höhere Kundenakzeptanz und eine Reichweitenerhöhung eines Hybrid- oder Elektrofahrzeugs erzielt wird.The advantages achieved by the invention consist in particular in a reduction or prevention of the vehicle's own acceleration when driving downhill, which results in a higher customer acceptance and a range increase of a hybrid or electric vehicle.

Ausführungsbeispiele der Erfindung werden im Folgenden anhand einer einzigen Zeichnung näher erläutert.Embodiments of the invention will be explained in more detail below with reference to a single drawing.

Dabei zeigt die einzige Figur ein Fahrzeug 1. Das Fahrzeug 1 ist mit einem Antrieb 2 ausgestattet.The only figure shows a vehicle 1 , The vehicle 1 is with a drive 2 fitted.

Bei dem Fahrzeug 1 kann es sich beispielsweise um ein Hybridfahrzeug handelt, welches als Antrieb 2 einen Verbrennungsmotor und einen Elektromotor umfasst. Handelt es sich bei dem Fahrzeug 1 um ein Elektrofahrzeug, so umfasst dieses einen Elektromotor als Antrieb 2.In the vehicle 1 it may be, for example, a hybrid vehicle, which is used as a drive 2 an internal combustion engine and an electric motor. Is it the vehicle 1 to an electric vehicle, so this includes an electric motor as a drive 2 ,

Des Weiteren umfasst das Fahrzeug 1 eine Steuereinheit 3, mittels der ein Betriebszustand am Antrieb 2 eingestellt und gesteuert wird. Die Steuereinheit 3 ist beispielsweise ein übergeordnetes Steuergerät, insbesondere ein sogenanntes CPC-System.Furthermore, the vehicle includes 1 a control unit 3 , by means of an operating state on the drive 2 is set and controlled. The control unit 3 is, for example, a higher-level control device, in particular a so-called CPC system.

Die Steuereinheit 3 ist darüber hinaus mit einem Neigungswinkelsensor 4 gekoppelt. Mittels des Neigungswinkelsensors 4 ist ein Gefälle G an einer vom Fahrzeug 1 befahrenen Fahrbahn oder einer vorausliegenden Fahrbahn ermittelbar und der Steuereinheit 3 zur Steuerung des Antriebs 2 zuführbar, wie nachfolgend näher an einem Ausführungsbeispiel erläutert wird:
Im Betrieb des Fahrzeugs 1 wird mittels der Steuereinheit 3 eine Bergabfahrt oder Talabfahrt des Fahrzeugs 1 identifiziert. Dabei kommt es zu einer Bergab-Beschleunigung des Fahrzeugs 1.The control unit 3 is also equipped with a tilt angle sensor 4 coupled. By means of the tilt angle sensor 4 is a slope G at one of the vehicle 1 traveled roadway or a preceding roadway determined and the control unit 3 for controlling the drive 2 be fed, as will be explained in more detail below on an embodiment:
In operation of the vehicle 1 is by means of the control unit 3 a downhill or descent of the vehicle 1 identified. This leads to a downhill acceleration of the vehicle 1 ,

Das mittels des Neigungswinkelsensors 4 erfasste Gefälle G bei der Bergabfahrt wird der Steuereinheit 3 zugeführt, wobei anhand des Gefälles G ein Rekuperationsmoment Rm (= Bremsmoment) am Elektromotor des Antriebs 2 eingestellt und geregelt, insbesondere derart vergrößert wird, dass eine Eigenbeschleunigung des Fahrzeugs 1 reduziert oder verhindert wird. Mittels einer solchen in der Steuereinheit 3 implementierten Regelung kann die Bergab-Beschleunigung derart eingegrenzt werden, dass über das größere Rekuperationsmoment Rm eine größere Bremswirkung vorliegt. Hierzu wird der Steuereinheit 3 als Eingangswert die Geschwindigkeit v des Fahrzeugs 1 zugeführt und zur Ermittlung der Beschleunigung des Fahrzeugs 1 verwendet. Dabei kann die Steuereinheit 3 ein derart großes Rekuperationsmoment Rm einstellen, dass bei identifizierter Bergabfahrt und entsprechender Vergrößerung des Rekuperationsmomentes Rm am Antrieb 2 ein mechanisches Bremssystem deaktiviert wird.That by means of the tilt angle sensor 4 recorded slope G at the downhill is the control unit 3 supplied on the basis of the gradient G a recuperation Rm (= braking torque) on the electric motor of the drive 2 adjusted and regulated, in particular is increased such that an intrinsic acceleration of the vehicle 1 is reduced or prevented. By means of such in the control unit 3 implemented control, the downhill acceleration can be limited so that there is a greater braking effect on the larger Rekuperationsmoment Rm. For this purpose, the control unit 3 as input value the speed v of the vehicle 1 supplied and for determining the acceleration of the vehicle 1 used. In this case, the control unit 3 set such a large recuperation torque Rm that at identified downhill drive and corresponding increase in the recuperation Rm on the drive 2 a mechanical braking system is deactivated.

Beispielsweise wird bei einem Hybridfahrzeug oder einem Elektrofahrzeug, wie einem sogenannten ISG-, RSG- oder Elektrofahrzeug, das Rekuperationsmoment Rm (das Drehmoment oder Gegen-/Bremsmoment) des Elektromotors schrittweise erhöht, so dass die Fahrgeschwindigkeit des Fahrzeugs 1 sich nicht erhöht. Dabei wird der Elektromotor über einen Generator oder der Elektromotor selbst im Generatorbetrieb betrieben und somit eine Bremskraft aufgebracht.For example, in a hybrid vehicle or an electric vehicle, such as a so-called ISG, RSG or electric vehicle, the recuperation torque Rm (the torque or counter / braking torque) of the electric motor is gradually increased so that the traveling speed of the vehicle 1 not increased. In this case, the electric motor is operated by a generator or the electric motor itself in the generator mode and thus applied a braking force.

Die hierbei gewonnene elektrische Energie wird in ein Speichermedium, wie beispielsweise eine Bordbatterie, eingespeist und kann für den elektrischen Antrieb 2 des Fahrzeugs wiederverwendet werden. Somit fließt Rekuperationsstrom zurück in das Hochvolt-Batteriesystem des Fahrzeugs 1. Als Folge wird die HV-Batterie geladen.The electrical energy obtained in this case is fed into a storage medium, such as an on-board battery, and can for the electric drive 2 be reused the vehicle. Thus, recuperation current flows back into the high-voltage battery system of the vehicle 1 , As a result, the HV battery is charged.

Sobald die Bergabfahrt beendet wird, wird über das mittels des Neigungswinkelsensors 4 ermittelten reduzierten Gefälles G mittels der Steuereinheit 3 das Rekuperationsmoment Rm am Antrieb 2 reduziert und nimmt ab.As soon as the downhill run is finished, it is controlled by means of the tilt angle sensor 4 determined reduced slope G by means of the control unit 3 the recuperation torque Rm on the drive 2 reduces and decreases.

Durch die erfindungsgemäße Vergrößerung des Rekuperationsmomentes Rm am Elektromotor bei Bergabfahrt wird der unangenehme Nebeneffekt der „Eigenbeschleunigung” des Fahrzeugs 1 bei Bergabfahrt reduziert oder verhindert.Due to the enlargement of the recuperation torque Rm according to the invention on the electric motor when driving downhill, the unpleasant side effect of the "intrinsic acceleration" of the vehicle 1 reduced or prevented when going downhill.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Fahrzeugvehicle
22
Antriebdrive
33
Steuereinheitcontrol unit
44
NeigungswinkelsensorTilt angle sensor
GG
Gefällegradient
Rmrm
Rekuperationsmomentrecuperation
vv
Geschwindigkeitspeed

Claims (4)

Verfahren zum Betrieb eines Fahrzeugs (1) mit einem Antrieb (2), insbesondere einem Hybridantrieb, umfassend einen Verbrennungsmotor und einen Elektromotor, oder einem Elektroantrieb eines Elektromotors, dadurch gekennzeichnet, dass bei einer identifizierten Bergabfahrt des Fahrzeugs (1) ein Gefälle (G) ermittelt wird und anhand des Gefälles (G) ein Rekuperationsmoment (Rm) des Elektromotors derart vergrößert wird, dass eine Eigenbeschleunigung des Fahrzeugs (1) reduziert oder verhindert wird.Method for operating a vehicle ( 1 ) with a drive ( 2 ), in particular a hybrid drive, comprising an internal combustion engine and an electric motor, or an electric drive of an electric motor, characterized in that during an identified downhill descent of the vehicle ( 1 ) a gradient (G) is determined, and on the basis of the gradient (G) a recuperation torque (Rm) of the electric motor is increased such that an own acceleration of the vehicle ( 1 ) is reduced or prevented. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei identifizierter Bergabfahrt der Elektromotor in Generatorbetrieb geschaltet wird.A method according to claim 1, characterized in that when the downhill driving the electric motor is switched to generator mode. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass bei identifizierter Bergabfahrt ein mechanisches Bremssystem deaktiviert wird.A method according to claim 1 or 2, characterized in that when a downhill driving a mechanical braking system is deactivated. Vorrichtung zum Betrieb eines Fahrzeugs (1) mit einem Antrieb (2), insbesondere mit einem Hybridantrieb, umfassend einen Verbrennungsmotor und einen Elektromotor, oder mit einem Elektroantrieb eines Elektromotors, dadurch gekennzeichnet, dass eine Steuereinheit (3), eine Bergabfahrt des Fahrzeugs (1) identifiziert und mit einem Neigungswinkelsensor (4) gekoppelt ist, wobei die Steuereinheit (3) in Abhängigkeit von einem mittels des Neigungswinkelsensors (4) erfassten Gefälles (G) ein Rekuperationsmoment (Rm) des Elektromotors derart vergrößert, dass eine Eigenbeschleunigung des Fahrzeugs (1) reduziert oder verhindert wird.Device for operating a vehicle ( 1 ) with a drive ( 2 ), in particular with a hybrid drive, comprising an internal combustion engine and an electric motor, or with an electric drive of an electric motor, characterized in that a control unit ( 3 ), a descent of the vehicle ( 1 ) and with a tilt angle sensor ( 4 ), the control unit ( 3 ) in dependence on a by means of the inclination angle sensor ( 4 ) detected gradients (G) a Rekuperationsmoment (Rm) of the electric motor increases such that an intrinsic acceleration of the vehicle ( 1 ) is reduced or prevented.
DE102015014336.0A 2015-11-05 2015-11-05 Method and device for operating a vehicle Withdrawn DE102015014336A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550247A (en) * 2019-09-10 2021-03-26 株式会社斯巴鲁 Brake control device
WO2021185747A1 (en) * 2020-03-20 2021-09-23 Zf Friedrichshafen Ag Method for operating an electrified drive train for a working machine, electrified drive train for a working machine and working machine
DE102021212440A1 (en) 2021-11-04 2023-05-04 Zf Friedrichshafen Ag Control device for an electric drive train of a working machine
DE102023004106A1 (en) 2023-10-12 2024-06-06 Mercedes-Benz Group AG Procedure for securing a braking function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550247A (en) * 2019-09-10 2021-03-26 株式会社斯巴鲁 Brake control device
WO2021185747A1 (en) * 2020-03-20 2021-09-23 Zf Friedrichshafen Ag Method for operating an electrified drive train for a working machine, electrified drive train for a working machine and working machine
US12110000B2 (en) 2020-03-20 2024-10-08 Zf Friedrichshafen Ag Method for operating an electrified drive train for a working machine, electrified drive train for a working machine and working machine
DE102021212440A1 (en) 2021-11-04 2023-05-04 Zf Friedrichshafen Ag Control device for an electric drive train of a working machine
DE102023004106A1 (en) 2023-10-12 2024-06-06 Mercedes-Benz Group AG Procedure for securing a braking function

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