DE102015205278A1 - Power network for an electrically driven motor vehicle - Google Patents
Power network for an electrically driven motor vehicle Download PDFInfo
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- DE102015205278A1 DE102015205278A1 DE102015205278.8A DE102015205278A DE102015205278A1 DE 102015205278 A1 DE102015205278 A1 DE 102015205278A1 DE 102015205278 A DE102015205278 A DE 102015205278A DE 102015205278 A1 DE102015205278 A1 DE 102015205278A1
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
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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
- 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
- B60L58/19—Switching between serial connection and parallel connection of battery modules
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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
- 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
- B60L58/21—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 the same nominal voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
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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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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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
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/52—Drive Train control parameters related to converters
- B60L2240/526—Operating parameters
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/52—Drive Train control parameters related to converters
- B60L2240/527—Voltage
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
- 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
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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
- 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
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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
- 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
Abstract
Die vorliegende Erfindung betrifft ein Stromnetz (100) für ein elektrisch antreibbares Kraftfahrzeug; mit einem Bordnetz (101) zum Versorgen von elektrischen Komponenten des Kraftfahrzeugs mit einer Gleichspannung; einem Antriebstrang (103), der einen Batteriedirektumrichter (105) oder einen Batterie-Konverter mit mehreren schaltbaren Batteriemodulen (107-1, ..., 107-n) aufweist, zum Versorgen eines Elektroantriebs (109) mit einer Wechselspannung; und einer Auskoppeleinrichtung (111-1, ..., 111-n) zum Auskoppeln eines Batteriemoduls (107-1), das mit dem Bordnetz (101) verbunden ist, aus dem Antriebsstrang (103).The present invention relates to a power grid (100) for an electrically driven motor vehicle; with a vehicle electrical system (101) for supplying electrical components of the motor vehicle with a DC voltage; a powertrain (103) having a battery direct converter (105) or a battery converter with a plurality of switchable battery modules (107-1, ..., 107-n) for supplying an electric drive (109) with an AC voltage; and a decoupling device (111-1, ..., 111-n) for decoupling a battery module (107-1), which is connected to the electrical system (101), from the drive train (103).
Description
Die vorliegende Erfindung betrifft ein Stromnetz für ein elektrisch antreibbares Kraftfahrzeug, wie beispielsweise ein Elektrofahrzeug oder ein Hybridfahrzeug.The present invention relates to a power network for an electrically driven motor vehicle, such as an electric vehicle or a hybrid vehicle.
Mit der seriellen Verschaltung von elektrochemischen Batteriezellen können Hochvolt-Energiespeicher mit großer Kapazität für einen Antrieb von Elektrofahrzeugen realisiert werden. Aufgrund der hohen Energiedichte werden Lithium-Ionen-Batterien verwendet. In einem Batteriesystem mit integriertem Umrichter wird ein schneller Wechsel der Stromführung durch ein Batteriemodul oder an diesem Batteriemodul vorbei zur Variation der Strangspannung erzeugt. Hierbei werden Batteriemodule mit Strömen über größere Frequenzbereiche bis in den kHz-Bereich betrieben.With the serial connection of electrochemical battery cells high-voltage energy storage can be realized with large capacity for driving electric vehicles. Due to the high energy density lithium-ion batteries are used. In a battery system with an integrated converter, a rapid change of the current conduction through a battery module or past this battery module is generated for varying the strand voltage. This battery modules are operated with currents over larger frequency ranges up to the kHz range.
Ein Batteriemodul besteht dabei aus einer Verschaltung von einer oder mehrerer Batteriezellen mittels einer Brückenschaltung. In dem Batteriesystem mit integriertem Umrichter als Direkt-Inverter kann eine drei-phasige Wechselspannung erzeugt werden. Allerdings kann im Gegensatz zu einem konventionellen Energiespeichersystem mit Zentralinverter kein Gleichspannungswandler zur Versorgung eines Gleichspannungsbordnetzes verwendet werden. Die übrigen Verbraucher können daher nicht effizient mit Strom versorgt werden. Eine Bordnetzversorgung wie bei einer konventionellen Hochspannungsbatterie ohne H-Brücken an den Batteriezellen über einen Gleichspannungswandler scheidet in diesem Fall aus.A battery module consists of an interconnection of one or more battery cells by means of a bridge circuit. In the battery system with integrated inverter as a direct inverter, a three-phase AC voltage can be generated. However, in contrast to a conventional energy storage system with central inverter no DC-DC converter can be used to supply a DC electrical system. The remaining consumers can therefore not be supplied with electricity efficiently. An onboard power supply as in a conventional high voltage battery without H-bridges on the battery cells via a DC-DC converter is eliminated in this case.
Es ist die Aufgabe der vorliegenden Erfindung ein Stromnetz für ein elektrisch antreibbares Kraftfahrzeug bereitzustellen, das die effiziente Versorgung von elektrischen Komponenten mit Gleichstrom auch bei einer Verwendung eines Batteriedirektumrichters ermöglicht.It is the object of the present invention to provide a power grid for an electrically driven motor vehicle, which enables the efficient supply of electrical components with direct current even when using a battery direct converter.
Gemäß einem ersten Aspekt wird die Aufgabe durch ein Stromnetz für ein elektrisch antreibbares Kraftfahrzeug gelöst; mit einem Bordnetz zum Versorgen von elektrischen Komponenten des Kraftfahrzeugs mit einer Gleichspannung; einem Antriebstrang, der einen Batteriedirektumrichter oder einen Batterie-Konverter mit mehreren schaltbaren Batteriemodulen aufweist, zum Versorgen eines Elektroantriebs mit einer Wechselspannung; und einer Auskoppeleinrichtung zum Auskoppeln eines Batteriemoduls, das mit dem Bordnetz verbunden ist, aus dem Antriebsstrang. Dadurch wird beispielsweise der technische Vorteil erreicht, dass auf einfache Weise eine direkte Erzeugung einer konstanten Spannung für das Bordnetz durchgeführt werden kann. Dadurch können ein oder zwei Batteriemodule pro Strang so verschaltet werden, dass die Modulspannung auf einen Zwischenkreis ausgekoppelt wird, über den ein galvanisch trennender Gleichspannungswandler das Bordnetz versorgt. Die ausgekoppelten Batteriemodule stellen über die Auskoppelelemente die Eingangsspannung für den Gleichspannungswandler des Bordnetzes bereit.According to a first aspect, the object is achieved by a power grid for an electrically driven motor vehicle; with a vehicle electrical system for supplying electrical components of the motor vehicle with a DC voltage; a powertrain having a battery direct converter or a battery converter with a plurality of switchable battery modules, for supplying an electric drive with an AC voltage; and a decoupling device for decoupling a battery module, which is connected to the electrical system, from the drive train. As a result, for example, the technical advantage is achieved that in a simple manner, a direct generation of a constant voltage for the electrical system can be performed. As a result, one or two battery modules per line can be connected in such a way that the module voltage is decoupled to a DC link via which a galvanically isolating DC-DC converter supplies the vehicle electrical system. The decoupled battery modules provide via the decoupling elements, the input voltage for the DC-DC converter of the electrical system.
In einer vorteilhaften Ausführungsform des Stromnetzes ist das auskoppelbare Batteriemodul über einen Gleichspannungswandler mit dem Bordnetz verbunden. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die Spannung des Batteriemoduls angehoben oder abgesenkt werden kann.In an advantageous embodiment of the power grid, the decoupled battery module is connected via a DC-DC converter to the electrical system. As a result, for example, the technical advantage is achieved that the voltage of the battery module can be raised or lowered.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes umfasst die Auskoppeleinrichtung Dioden oder Halbleiterschalter zum Auskoppeln des Batteriemoduls. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die auskoppelbaren Batteriemodule auf einfache Weise entkoppelt werden können.In a further advantageous embodiment of the power grid, the decoupling device comprises diodes or semiconductor switches for coupling out the battery module. As a result, for example, the technical advantage is achieved that the decoupled battery modules can be decoupled in a simple manner.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes umfasst das Stromnetz mehrere auskoppelbare Batteriemodule. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die Bordnetzspannung auch dann aufrechterhalten werden kann, wenn eines der Batteriemodule entladen ist.In a further advantageous embodiment of the power grid, the power grid comprises a plurality of decoupled battery modules. As a result, the technical advantage is achieved, for example, that the vehicle electrical system voltage can be maintained even when one of the battery modules is discharged.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes sind die auskoppelbaren Batteriemodule in Serie miteinander verbunden. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die Spannung erhöht werden kann, die von den Batteriemodulen bereitgestellt wird.In a further advantageous embodiment of the power grid, the decoupled battery modules are connected in series with each other. Thereby, for example, the technical advantage is achieved that the voltage can be increased, which is provided by the battery modules.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes sind die auskoppelbaren Batteriemodule parallel zueinander verbunden. Dadurch wird beispielsweise der technische Vorteil erreicht, dass sich die Kapazität der Batteriemodule erhöht.In a further advantageous embodiment of the power grid, the decoupled battery modules are connected in parallel. As a result, for example, the technical advantage is achieved that increases the capacity of the battery modules.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes umfasst das Stromnetz mehrere Antriebstränge mit jeweils einem auskoppelbaren Batteriemodul. Dadurch wird beispielsweise der technische Vorteil erreicht, dass mehrere Antriebstränge gleichmäßig belastet werden.In a further advantageous embodiment of the power grid, the power grid comprises a plurality of drive trains, each with a decoupled battery module. As a result, for example, the technical advantage is achieved that several drive trains are loaded evenly.
In einer weiteren vorteilhaften Ausführungsform des Stromnetzes sind die auskoppelbare Batteriemodule über Transistor-H-Brücken variabel miteinander verschaltbar. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die Batteriemodule parallel oder seriell geschaltet werden können.In a further advantageous embodiment of the power grid, the decoupled battery modules can be variably interconnected via transistor H-bridges. As a result, the technical advantage is achieved, for example, that the battery modules can be connected in parallel or in series.
Gemäß einem zweiten Aspekt wird die Aufgabe durch ein Verfahren zum Betreiben eines Stromnetzes gelöst, mit den Schritten eines Versorgens von elektrischen Komponenten des Kraftfahrzeugs mit einer Gleichspannung mittels eines Bordnetzes; eines Versorgens eines Elektroantriebs mit einer Wechselspannung über einen Antriebstrang, der einen Batteriedirektumrichter mit mehreren schaltbaren Batteriemodulen aufweist; und eines Auskoppelns eines Batteriemoduls, das mit dem Bordnetz verbunden ist, aus dem Antriebsstrang mittels einer Auskoppeleinrichtung. Dadurch werden die gleichen technischen Vorteile wie durch das Verfahren nach dem ersten Aspekt erreicht.According to a second aspect, the object is achieved by a method for operating a Electricity network solved, with the steps of supplying electrical components of the motor vehicle with a DC voltage by means of a vehicle electrical system; supplying an electric drive with an AC voltage via a drive train having a battery direct converter with a plurality of switchable battery modules; and a decoupling of a battery module, which is connected to the electrical system, from the drive train by means of a decoupling device. This achieves the same technical advantages as the method according to the first aspect.
In einer Vorteilhaften Ausführungsform des Verfahrens werden mehrere Batteriemodule über Transistor-H-Brücken variabel miteinander verschaltet. Dadurch wird beispielsweise ebenfalls der technische Vorteil erreicht, dass die Batteriemodule parallel oder seriell geschaltet werden können.In an advantageous embodiment of the method, a plurality of battery modules are interconnected variably via transistor H bridges. As a result, for example, the technical advantage is achieved that the battery modules can be connected in parallel or in series.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.Embodiments of the invention are illustrated in the drawings and will be described in more detail below.
Es zeigen:Show it:
Die elektrischen Komponenten des Kraftfahrzeugs sind an ein Bordnetz
Die Ausgangspannung der Batteriemodule
Einige der Batteriemodule
Die Auskoppeleinrichtung
Das Stromnetz
Um den Entladestrom der Batteriemodule
Das Ansteuermuster umfasst ein Ansteuern des Batteriemoduls
Die Verschaltung der Batteriemodule
Werden die unteren Batteriemodule
Die Batteriemodule
Besonders bei Ausprägungen von Direktinvertertopologien mit geringer Modulspannung, wie beispielsweise 7,2 V, kann der Gleichspannungswandler
Werden zwei Batteriemodule
Ist ein Batteriemodul
Das Diagramm
Jeweils zwei Batteriemodule
Werden die unteren Batteriemodule
Die übrigen parallelen Antriebsstränge
Die Lastaufteilung auf die einzelnen Batteriemodule
Bei der Serienverschaltung zweier Batteriemodule
Allen Ausführungsformen ist gemeinsam, dass neben einer zusätzlichen Beschaltung mit den Auskoppelelementen
Die Belastungsverteilung oder Energieabnahmeauskopplung aus den einzelnen Batteriemodulen
Durch die Verschaltung und Ansteuermuster mit drei Antriebssträngen
Da je nach Fahrprofil die Zellen für die Bordnetzversorgung schneller oder langsamer entladen werden, können durch geeignete Ansteuerung die Bordnetzzellen von den Batteriemodulen
Im Allgemeinen können ein oder mehrere Batteriemodule
Durch das Stromnetz
Alle in Verbindung mit einzelnen Ausführungsformen der Erfindung erläuterten und gezeigten Merkmale können in unterschiedlicher Kombination in dem erfindungsgemäßen Gegenstand vorgesehen sein, um gleichzeitig deren vorteilhafte Wirkungen zu realisieren.All features explained and shown in connection with individual embodiments of the invention may be provided in different combinations in the article according to the invention, in order to simultaneously realize their advantageous effects.
Der Schutzbereich der vorliegenden Erfindung ist durch die Ansprüche gegeben und wird durch die in der Beschreibung erläuterten oder den Figuren gezeigten Merkmale nicht beschränkt.The scope of the present invention is given by the claims and is not limited by the features illustrated in the specification or shown in the figures.
Claims (10)
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016105542A1 (en) * | 2016-03-24 | 2017-09-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for operating an electrical network |
DE102016125720A1 (en) * | 2016-12-27 | 2018-06-28 | Universität der Bundeswehr München | Low-voltage decoupling from a modular energy storage inverter system |
WO2018206201A1 (en) * | 2017-05-11 | 2018-11-15 | Audi Ag | Battery device having at least one module string, in which module string module units are interconnected one after the other in a row, and motor vehicle and operating method for the battery device |
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US11682914B2 (en) | 2016-11-25 | 2023-06-20 | Dyson Technology Limited | Battery system |
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CN112154080A (en) * | 2018-05-23 | 2020-12-29 | 山特维克矿山工程机械有限公司 | System and method for supplying mining vehicle with electrical energy and mining vehicle |
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DE102021129953B3 (en) | 2021-11-17 | 2022-10-06 | Bayerische Motoren Werke Aktiengesellschaft | Multi-compatible power converter, method of operating a power converter, drive system and electrically powered device |
CN114290906A (en) * | 2022-01-25 | 2022-04-08 | 广东汇天航空航天科技有限公司 | High-voltage control device, control method and aircraft |
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