DE102011054267A1 - Method for controlling plug-in-hybrid vehicle, involves connecting battery with electric motor to supply electric motor with power and to drive vehicle by using energy stored in battery - Google Patents

Method for controlling plug-in-hybrid vehicle, involves connecting battery with electric motor to supply electric motor with power and to drive vehicle by using energy stored in battery Download PDF

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DE102011054267A1
DE102011054267A1 DE102011054267A DE102011054267A DE102011054267A1 DE 102011054267 A1 DE102011054267 A1 DE 102011054267A1 DE 102011054267 A DE102011054267 A DE 102011054267A DE 102011054267 A DE102011054267 A DE 102011054267A DE 102011054267 A1 DE102011054267 A1 DE 102011054267A1
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battery
electric motor
charge
vehicle
minimum state
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Karl Dums
Markus Göhring
Armin Obermüller
Heiko Mayer
Immo Stache
Nils Sauvlet
Stefan Fischer
Thomas Fruth
Thomas Günther
Werner Schiek
Thomas Rauner
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in 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
    • 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
    • B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
    • 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
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/13—Maintaining the SoC within a determined range
    • 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
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • 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
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • 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
    • 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
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
    • 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
    • B60L2240/62—Vehicle position
    • 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
    • B60L2240/70—Interactions with external data bases, e.g. traffic centres
    • B60L2240/72—Charging station selection relying on external data
    • 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
    • B60W2710/24—Energy storage means
    • B60W2710/242—Energy storage means for electrical energy
    • B60W2710/244—Charge state
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • 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
    • 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
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • 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

Abstract

The method involves connecting a battery with an electric motor to supply the electric motor with power and to drive a vehicle by using energy stored in the battery. A battery-dependent minimum loading condition (11) of the battery is provided and is shifted to a target-minimum loading condition (12). The battery is loaded over a hybrid operation in the undercut of the target-minimum loading condition. The battery-dependent minimum loading condition depends on the operating conditions and the distance to the next loading station.

Description

Aus der DE 10 2010 018 447 A1 ist bereits ein Verfahren zum Steuern eines Antriebsstrangs bekannt, bei welchem der Antriebsstrang eine Maschine, einen Motor und eine Batterie aufweist, und wobei die Batterie funktional mit dem Motor verbunden ist, um den Motor mit Leistung zu versorgen und das Fahrzeug unter Verwendung von in der Batterie gespeicherten Energie voranzutreiben. Bei diesem bekannten Stand der Technik wird der Ladezustand der Batterie dahingehend überwacht, ob ein rein elektrischer Betriebsmodus im Hinblick auf die nächste zu erreichenden Ladestationen für die Batterie möglich ist. From the DE 10 2010 018 447 A1 A method of controlling a powertrain is known in which the powertrain includes a machine, an engine, and a battery, and wherein the battery is operatively connected to the engine to power the engine and use the vehicle in the vehicle Battery powered energy to advance. In this known prior art, the state of charge of the battery is monitored as to whether a purely electrical mode of operation with regard to the next to be reached charging stations for the battery is possible.

Bei dem bekannten Stand der Technik sind in den Kartendaten des Navigationssystems die Orte besonders gekennzeichnet, an welchen die Batterie des Fahrzeugs an einem Netz aufgeladen werden kann. In Abstimmung mit der lokalen Position des Fahrzeugs und der nächsten Ladestation wird so entschieden, ob ein rein elektrischer Betriebsmodus möglich ist. In the known prior art, in the map data of the navigation system, the locations are particularly marked, to which the battery of the vehicle can be charged to a network. In coordination with the local position of the vehicle and the next charging station, it is decided whether a purely electrical operating mode is possible.

Bei Hybridfahrzeugen mit Plug-In startet das Fahrzeug im Idealfall mit einer voll aufgeladenen Batterie, da diese am Stromnetz aufgeladen wurde. Je nach Anforderungen nimmt der Ladezustand der Batterie während der Fahrt ab. Sobald eine Mindestladezustand unterschritten ist, geht das Fahrzug in einen hybridischen Betrieb, so dass sowohl der Elektromotor als auch ein Verbrennungsmotor genutzt werden. Für einen erneuten rein elektrischen Betrieb ist ein erneutes Laden der Batterie am Stromnetz erforderlich. In hybrid vehicles with plug-in, the vehicle ideally starts with a fully charged battery as it has been charged to the mains. Depending on requirements, the state of charge of the battery decreases while driving. As soon as a minimum state of charge is reached, the vehicle moves into a hybrid mode, so that both the electric motor and an internal combustion engine are used. For a renewed purely electrical operation, a recharging of the battery is required at the mains.

Ausgehend vom Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen verbesserten elektrischen Betriebsmodus und eine möglichst große Reichweite im elektrischen Betriebsmodus zu realisieren. Based on the prior art, the present invention has the object to realize an improved electrical operating mode and the largest possible range in the electrical operating mode.

Diese Aufgabe wird mit den erfindungsgemäßen Merkmalen der vorliegenden Patentansprüche gelöst. This object is achieved with the inventive features of the present claims.

Durch das erfindungswesentliche Merkmal, wonach der batterieabhängigen Mindestladezustand der Batterie durch den Fahrer verschiebbar ist, sorgt bereits zu einem frühen Zeitpunkt für ein Wiederaufladen der Batterie durch den Betrieb des Verbrennungsmotors. Die Grenze für einen reinen elektromotorischen Betrieb in Abhängigkeit des Ladezustandes der Batterie wird damit auf einen vorgebbaren Ziel-Mindestladezustand angehoben. Due to the feature essential to the invention, according to which the battery-dependent minimum state of charge of the battery can be displaced by the driver, the battery is recharged at an early point in time by the operation of the internal combustion engine. The limit for a pure electromotive operation as a function of the state of charge of the battery is thus raised to a predefinable target minimum state of charge.

Das Vorsehen eines entsprechenden Auswahlschalters, mit welchem der Fahrer des Fahrzeugs den batterieabhängigen Mindestladezustand auf einen vorgebbaren Ziel-Mindestladezustand anhebt, hat den Vorteil, dass der reinen elektromotorische Betrieb auch ohne Netzladung wieder hergestellt werden kann. Mit Hilfe dieser Zusatzfunktion ist es somit möglich, sich auf längere Strecken vorzubereiten, die mit reinem Elektromodus zurückgelegt werden sollen, wie dies beispielsweise in Städten mit entsprechenden Abgasvorschriften notwendig sein kann. The provision of a corresponding selection switch, with which the driver of the vehicle raises the battery-dependent minimum state of charge to a predefinable target minimum state of charge, has the advantage that the pure electromotive operation can be restored even without mains charging. With the help of this additional function, it is thus possible to prepare for longer distances, which are to be covered with pure electric mode, as may be necessary, for example, in cities with corresponding emission regulations.

Ferner ergibt sich durch die Nutzung des Hybridbetriebes und damit einer definierten Zuschaltung eines Verbrennungsmotors zum Aufladen der Batterie der Vorteil, dass dieser Zustand bei energetisch günstigen Bedingungen aktivierbar ist. So ist es möglich, die Batterie durch eine einfache Lastpunktverschiebung des Verbrennungsmotors optimal aufzuladen. Gleichzeitig ist es möglich, die in der Rekuperationsphase gewonnene Energie zum Laden der Batterie zu verwenden. Furthermore, results from the use of hybrid operation and thus a defined connection of an internal combustion engine for charging the battery, the advantage that this state can be activated at low energy conditions. So it is possible to charge the battery optimally by a simple load point shift of the engine. At the same time, it is possible to use the energy obtained during the recuperation phase to charge the battery.

Letztendlich bietet das erfindungsgemäße Verfahren den Vorteil, dass die Verbrauchsreduktion gegenüber einem konventionellen Hybridbetrieb wesentlich verbessert ist und gleichzeitig das Aufladen der Fahrzeugbatterie schneller realisiert werden kann als über das herkömmliche Netz an einer Ladestation. Damit ist ein späterer Neustart auch ohne Netzladung möglich. Finally, the inventive method has the advantage that the consumption reduction compared to a conventional hybrid operation is substantially improved and at the same time the charging of the vehicle battery can be realized faster than the conventional network at a charging station. This allows a later restart even without mains charging.

Die Erfindung ist anhand der Figur dargestellt und im Folgenden näher erläutert. The invention is illustrated by the figure and explained in more detail below.

Die Figur zeigt eine Prinzipübersicht des Ladezustandes einer Batterie mit definiertem Mindestladezustand. The figure shows a schematic overview of the state of charge of a battery with a defined minimum state of charge.

Der Aufbau eines Fahrzeuges mit Plug-In-Hybrid ist aus dem Stand der Technik bereits bekannt und soll hier nicht noch mal erläutert werden. The construction of a vehicle with plug-in hybrid is already known from the prior art and will not be explained again here.

Die 1 zeigt als waagrechten Balken (10) die Ladekapazität einer nicht dargestellten Batterie von 0 bis 100%. Aufgrund des Verhaltens einer elektrischen Batterie ist für jede Batterie ein Mindestladezustand sicherzustellen, um den Betrieb eines Fahrzeugs entsprechend mit seinen Funktionen aufrechtzuerhalten. Dieser Mindestladezustand ist damit abhängig von der Batterie selbst und den aktuellen Betriebsbedingungen und wird entsprechend einem definierten Mindestpotential bestimmt. The 1 shows as a horizontal bar ( 10 ) The charging capacity of a battery, not shown, from 0 to 100%. Due to the behavior of an electric battery, a minimum state of charge must be ensured for each battery in order to maintain the operation of a vehicle in accordance with its functions. This minimum state of charge is thus dependent on the battery itself and the current operating conditions and is determined according to a defined minimum potential.

In der 1 ist dieser batterieabhängige Mindestladezustand mit dem Bezugszeichen (11) angegeben. Beim Unterschreiten dieses Mindestladezustands (11) geht das Fahrzeug in den hybridischen Betrieb über. Im hybridischen Modus wird der Mindestladezustand (11) durch die Betriebsstrategie aufrechterhalten und das Fahrzeug kann im Hybridbetrieb entsprechend lange weiterfahren, da dem Fahrbetrieb in Plug-In-Hybridfahrzeug alle Funktionalitäten wie in herkömmlichen Hybridfahrzeugen zur Verfügung stehen. In the 1 is this battery-dependent minimum state of charge with the reference symbol ( 11 ). When falling below this minimum state of charge ( 11 ) the vehicle goes into hybrid operation. In hybrid mode, the minimum state of charge ( 11 ) maintained by the operating strategy and the vehicle can continue in hybrid operation correspondingly long, since the driving in plug-in hybrid vehicle all Functionalities as in conventional hybrid vehicles are available.

Zur Sicherstellung und Gewährleistung einer rein elektromotorischen Fahrtweise wird beim erfindungsgemäßen Verfahren der Mindestladezustand von einem batterieabhängigen Wert (11) auf einen vorgebbaren Ziel Mindestladezustand 12 angehoben. Dies zeichnet sich durch einen effizienten Betrieb aus, die auf einen verbrauchsoptimiertem Laden der Batterie basiert. Abhängig vom Batterieladezustand, der Geschwindigkeit der Umgebung oder des Betriebszustands wird beurteilt, wie effektiv Energie zur Speicherung der Energie gewonnen werden kann. Sind hierbei energetisch günstige Bedingungen erreicht, wird die Batterie durch eine Lastpunktverschiebung geladen. Zusätzlich wird auch die in der Rekuperationsphase gewonnene Energie zum Laden verwendet. In order to ensure and guarantee a purely electromotive mode of driving, in the method according to the invention the minimum charge state is dependent on a battery-dependent value ( 11 ) to a predefinable target minimum state of charge 12 raised. This is characterized by an efficient operation based on a consumption-optimized charging of the battery. Depending on the battery state of charge, the speed of the environment or the operating state, it is assessed how effectively energy can be obtained to store the energy. If this energetically favorable conditions are reached, the battery is charged by a load point shift. In addition, the energy recovered in the recuperation phase is also used for charging.

Das Anheben des Mindestladezustandes kann den Fahrer aktiviert werden, so dass mit Hilfe dieses Modus auf Wunsch des Fahrers der Zustand der reinen Elektrofahrt auch ohne Netzladung bzw. während des Fahrzeugbetriebs wiederhergestellt werden kann. Gleichzeitig kann sie verlängert werden. The raising of the minimum state of charge can be activated by the driver, so that with the help of this mode, the state of the pure electric drive can be restored even without mains charging or during vehicle operation at the request of the driver. At the same time, it can be extended.

Die vorgeschlagene Funktion hat somit den weiteren Vorteil, dass es dem Fahrer möglich ist, sich auf längeren Elektrofahrten beispielsweise in den Innenstädten mit Fahrverboten vorzubereiten, auch wenn keine Netzlademöglichkeit während der Fahrt oder am Zielort zur Verfügung steht. The proposed function thus has the further advantage that it is possible for the driver to prepare for longer electric trips, for example in the city centers with driving bans, even if no network charging option is available while driving or at the destination.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102010018447 A1 [0001] DE 102010018447 A1 [0001]

Claims (4)

Verfahren zum Steuern eines Plug-In-Hybridfahrzeugs Fahrzeugs mit einem Elektromotor zum Realisieren eines elektrischen Antriebs, mit einem Verbrennungsmotor zum Realisieren eines verbrennungsmotorischen Antriebs und einer Batterie, wobei die Batterie funktional mit dem Elektromotor verbunden ist, um den Elektromotor mit Leistung zu versorgen und das Fahrzeug unter Verwendung von in der Batterie gespeicherten Energie voranzutreiben, dadurch gekennzeichnet, dass ein batterieabhängiger Mindestladezustand (11) der Batterie vorgegeben ist und dass dieser Mindestladezustand auf einen Ziel-Mindestladezustand (12) verschiebbar ist und dass bei Unterschreiten des Ziel-Mindestladezustands (12) die Batterie über einen hybridischen Betrieb geladen wird. A method of controlling a plug-in hybrid vehicle comprising an electric motor for realizing an electric drive, an internal combustion engine for realizing an internal combustion engine drive, and a battery, wherein the battery is operatively connected to the electric motor to power the electric motor, and the Drive vehicle using energy stored in the battery, characterized in that a battery-dependent minimum state of charge ( 11 ) of the battery is predetermined and that this minimum state of charge to a target minimum state of charge ( 12 ) is displaceable and that falls below the target minimum state of charge ( 12 ) the battery is charged via a hybrid operation. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der batterieabhängige Mindestladezustand (11) von den Betriebsbedingungen und der Entfernung zur nächsten Ladestation abhängt. A method according to claim 1, characterized in that the battery-dependent minimum state of charge ( 11 ) depends on the operating conditions and the distance to the next charging station. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der batterieabhängige Mindestladezustand (11) durch den Fahrer aktiv auf einen Ziel-Mindestladezustand (12) anhebbar ist. A method according to claim 2, characterized in that the battery-dependent minimum state of charge ( 11 ) by the driver to a target minimum state of charge ( 12 ) is liftable. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei einem Ladezustand der Batterie oberhalb des Mindestladezustands das Fahrzeug im elektromotorischen Betrieb bewegt wird. A method according to claim 1, characterized in that in a state of charge of the battery above the minimum state of charge, the vehicle is moved in the electric motor operation.
DE102011054267A 2011-10-07 2011-10-07 Method for controlling plug-in-hybrid vehicle, involves connecting battery with electric motor to supply electric motor with power and to drive vehicle by using energy stored in battery Ceased DE102011054267A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030015358A1 (en) * 2001-07-18 2003-01-23 Nissan Motor Co., Ltd. Hybrid vehicle
DE102010018447A1 (en) 2009-04-30 2010-11-18 GM Global Technology Operations, Inc., Detroit A method of controlling a vehicle powertrain and vehicle control system
US20110190968A1 (en) * 2010-02-03 2011-08-04 Toyota Motor Engineering & Manufacturing North America, Inc. Method and system for more efficient operation of plug-in electric vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030015358A1 (en) * 2001-07-18 2003-01-23 Nissan Motor Co., Ltd. Hybrid vehicle
DE102010018447A1 (en) 2009-04-30 2010-11-18 GM Global Technology Operations, Inc., Detroit A method of controlling a vehicle powertrain and vehicle control system
US20110190968A1 (en) * 2010-02-03 2011-08-04 Toyota Motor Engineering & Manufacturing North America, Inc. Method and system for more efficient operation of plug-in electric vehicles

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