EP1997207A1 - Power supply circuit comprising a four-quadrant dc/dc converter for an automotive on-board power supply network - Google Patents
Power supply circuit comprising a four-quadrant dc/dc converter for an automotive on-board power supply networkInfo
- Publication number
- EP1997207A1 EP1997207A1 EP07721941A EP07721941A EP1997207A1 EP 1997207 A1 EP1997207 A1 EP 1997207A1 EP 07721941 A EP07721941 A EP 07721941A EP 07721941 A EP07721941 A EP 07721941A EP 1997207 A1 EP1997207 A1 EP 1997207A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy storage
- power supply
- energy
- quadrant
- electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
Definitions
- the invention relates to a motor vehicle with a
- the classic form of energy storage in motor vehicles is based on the conversion of electrical energy into chemical energy.
- the electrical energy is generated in times of favorable operating conditions by a generator, such as an alternator, and stored for consumption in times of unfavorable operating conditions in the electrochemical storage, in most cases as a battery. Due to the mentioned time-varying load of the electrical system, therefore, results in a frequent change between the operating conditions Speieherladung and discharge.
- Another cause for a strong cyclization arises through the task, which is made for example in a hybrid vehicle to the power supply, braking energy Convert recuperation into electrical energy and feed it into the electrical system or save for later consumption.
- the aim of this process is the use of already generated energy and the reduction of fuel consumption.
- the task of the secondary energy storage is to operate the dynamic loads, thus reducing the cyclization of the main energy storage.
- Another task of the secondary energy storage is the storage of not immediately consumable energy, which is obtained for example by recuperation.
- Low-energy technologies such as capacitive energy storage by double-layer capacitors are used as secondary energy storage.
- Other cryogenic storage technologies based on electrochemistry are also possible.
- the operation of the auxiliary energy storage with a voltage level greater than or equal to the electrical system voltage of the motor vehicle.
- the voltage level of the secondary energy storage increases when charged compared to the main energy storage to sink by discharging back to the level of the main energy storage.
- the invention has for its object to provide a motor vehicle of the type mentioned, which allows a higher bandwidth of the use of electrical energy and a significant increase in the life expectancy of the main energy storage.
- This object is achieved according to the invention by virtue of the fact that the secondary energy store is connected to the vehicle electrical system via a four-quadrant DCDC converter on the consumption side.
- each energy store has a potential of electrical energy.
- this potential is exploited only up to a predetermined voltage level.
- this is usually identical to the voltage level of the main energy storage.
- a higher bandwidth of the use of electrical energy can be achieved, for example, via the use of energy up to an energy level whose absolute value is zero.
- the four-quadrant DCDC converter is advantageously preset such that it stores the electrical energy stored in the capacitive auxiliary energy storage up to a voltage level , which is below the voltage level of the main energy storage, the best design to a voltage level of 0 V can discharge.
- the advantages achieved by the invention are, in particular, that the main energy storage device is largely freed from cyclical stresses and thus its life expectancy is increased compared to the conventional application and that the usable energy content of the auxiliary energy storage device is significantly increased. Furthermore, a space and cost reduction is possible.
- An embodiment of the invention will be explained in more detail with reference to a drawing. The figure shows a schematic view of the electrical system of a motor vehicle.
- the electrical system 1 of a motor vehicle comprises a generator 2 which, when the motor vehicle is driven, converts the mechanical energy into electrical energy or recuperates it in certain operating states by means of the internal combustion engine (not shown here). Typically, this is done by storing excess electrical energy that is generated in phases of favorable operating states of the motor vehicle, for example by recuperation in a main energy storage 4 for later consumption in phases of unfavorable operating states.
- the main energy storage 4 is in most cases designed as a battery whose function is based on electrochemical processes.
- the supply of electrical loads 10 of the on-board network 8 takes place via the electrical energy stored in the main energy store 4 or directly via the vehicle
- the electrical installation 1 In order to relieve the main energy store 4 of the cyclical loads which are typical for the driving operation of a motor vehicle and the consumption and the generation of electrical energy, which can have a negative effect on its service life, the electrical installation 1 also comprises one in addition to the main energy store 4 Mauenergy acknowledged 6, both the onboard electrical system 8 with a number of consumers 10 feed and can store the generated or recuperated by the generator 2 energy. In this case, it is possible to charge the secondary energy store 6 via the voltage level of the main energy store 4.
- a control unit 12 determines the magnitude of the voltage in the main energy storage 4 and in the secondary energy storage. rather 6 detects and evaluates and, taking into account the result of the evaluation, the energy supply and the outflow of electrical energy from the secondary energy storage 6 controls, for example, the supply of the electrical system 8 through the secondary energy storage 6. In this case, the secondary energy storage to a voltage level below the voltage level of Main energy storage 4 can be discharged.
- the secondary energy store 6 is assigned a four-quadrant DCDC converter 18, which discharges the electrical energy stored in the secondary energy store 6 whose feed into the electrical system 8 allows a voltage level below the voltage level of the main energy storage 4.
- the utilization of the electrical energy of the secondary energy storage 6 via the four-quadrant DCDC converter 18 takes place up to a voltage level of 0 V, the main energy storage 4 is free of cyclic loads as long as the electrical energy in the secondary energy storage 6 is available ,
Abstract
The invention relates to a motor vehicle comprising a plurality of consumers (10) supplied with power via the on-board power supply network (8) and a main power store (4) and a capacitative accessory power store (6). The aim of the invention is to provide a system that allows an improved energy utilization and a significantly longer service life of the main power store (4). For this purpose, the accessory power store (6) is connected at the consumer end to the on-board power supply network (8) via a four-quadrant DC/DC converter (18).
Description
ENERGIEVERSORGUNGSSCHAL MIT EINEM VIER-QUADRANTΞN-DCDC WANDLER FÜR EIN KRAFTFAHRZEUG-BORDNETZPOWER SUPPLY SCARF WITH A FOUR QUADRANTΞN DCDC TRANSFORMER FOR A MOTORBORNE NETWORK
Die Erfindung bezieht sich auf ein Kraftfahrzeug mit einerThe invention relates to a motor vehicle with a
Anzahl von über das Bordnetz mit elektrischer Energie betriebenen Verbrauchern und einem die Energieversorgung steuernden Steuergerät sowie einem Hauptenergiespeicher und einem kapazitiven Nebenenergiespeicher .Number of powered via the electrical system consumers and a power supply controlling controller and a main energy storage and a capacitive auxiliary energy storage.
Basierend auf dem steigenden Funktionsumfang moderner Kraftfahrzeuge werden an die Bordnetze dieser Kraftfahrzeuge enorme Anforderungen gestellt. Dies äußert sich in einer zunehmenden Zahl elektrischer Verbraucher und steigendem Verbrauch von elektrischer Energie. Die Belastung eines solchen Kraftfahrzeugbordnetzes ist typischerweise zeitlich stark schwankend. Für die weitere Entwicklung ist davon auszugehen, dass die Belastung von Bordnetzen in modernen Kraftfahrzeugen weiter steigen wird.Based on the increasing range of functions of modern motor vehicles enormous demands are placed on the on-board systems of these motor vehicles. This manifests itself in an increasing number of electrical consumers and increasing consumption of electrical energy. The load on such a motor vehicle electrical system is typically highly variable over time. For further development, it can be assumed that the load on on-board networks in modern motor vehicles will continue to rise.
Die klassische Form der Energiespeicherung in Kraftfahrzeugen basiert auf der Wandelung von elektrischer Energie in chemische Energie. Die elektrische Energie wird in Zeiten günstiger Betriebszustände durch einen Generator, beispielsweise eine Lichtmaschine, erzeugt und für den Verbrauch in Zeiten ungünstiger Betriebszustände im elektrochemischen Speicher, in den meisten Fällen als Batterie ausgelegt, eingelagert. Durch die erwähnte zeitlich stark schwankende Belastung des Bordnetzes ergibt sich folglich ein häufiger Wechsel zwischen den Betriebszuständen Speieherladung und Entladung. Die daraus folgende häufige Zyklisierung des klassischen Energiespeichers belastet diesen auslegungsbedingt sehr stark und erzeugt entsprechende Nachteile für dessen Lebenserwartung.The classic form of energy storage in motor vehicles is based on the conversion of electrical energy into chemical energy. The electrical energy is generated in times of favorable operating conditions by a generator, such as an alternator, and stored for consumption in times of unfavorable operating conditions in the electrochemical storage, in most cases as a battery. Due to the mentioned time-varying load of the electrical system, therefore, results in a frequent change between the operating conditions Speieherladung and discharge. The consequent frequent cyclization of the classical energy storage burdened this interpretation very strong and generates corresponding disadvantages for its life expectancy.
Eine weitere Ursache für eine starke Zyklisierung entsteht durch die Aufgabe, die beispielsweise in einem Hybridfahrzeug an die Energieversorgung gestellt wird, Bremsenergie durch
Rekuperation in elektrische Energie zu wandeln und diese in das Bordnetz einzuspeisen oder für einen späteren Verbrauch zu speichern. Ziel dieses Verfahrens ist die Nutzung bereits erzeugter Energie sowie die Senkung des Kraftstoffverbrau- ches .Another cause for a strong cyclization arises through the task, which is made for example in a hybrid vehicle to the power supply, braking energy Convert recuperation into electrical energy and feed it into the electrical system or save for later consumption. The aim of this process is the use of already generated energy and the reduction of fuel consumption.
Um die Lebenserwartung des genannten Hauptenergiespeicher zu erhöhen, besteht die Möglichkeit, am Bordnetz einen weiteren Energiespeicher, einen sogenannten Nebenenergiespeicher, an- zukoppeln. Die Aufgabe des Nebenenergiespeichers besteht in der Bedienung der dynamischen Lasten, um somit die Zyklisie- rung des Hauptenergiespeichers zu reduzieren. Eine weitere Aufgabe des Nebenenergiespeichers ist die Speicherung der nicht sofort zu verbrauchenden Energie, die beispielsweise durch Rekuperation gewonnen wird.In order to increase the life expectancy of said main energy storage, it is possible to connect to the electrical system another energy storage, a so-called secondary energy storage. The task of the secondary energy storage is to operate the dynamic loads, thus reducing the cyclization of the main energy storage. Another task of the secondary energy storage is the storage of not immediately consumable energy, which is obtained for example by recuperation.
Als Nebenenergiespeicher kommen zyklenfeste Technologien wie beispielsweise eine kapazitive Energiespeicherung durch Doppelschichtkondensatoren zum Einsatz. Andere zyklenfeste Spei- chertechnologien auf elektrochemischer Basis sind ebenfalls möglich.Low-energy technologies such as capacitive energy storage by double-layer capacitors are used as secondary energy storage. Other cryogenic storage technologies based on electrochemistry are also possible.
Üblicherweise erfolgt der Betrieb des Nebenenergiespeichers mit einem Spannungsniveau größer oder gleich der Bordnetz- Spannung des Kraftfahrzeuges. Das Spannungsniveau des Nebenenergiespeichers steigt bei Ladung im Vergleich zum Haupt- energiespeicher an, um durch Entladung wieder auf das Niveau des Hauptenergiespeichers zu sinken.Usually, the operation of the auxiliary energy storage with a voltage level greater than or equal to the electrical system voltage of the motor vehicle. The voltage level of the secondary energy storage increases when charged compared to the main energy storage to sink by discharging back to the level of the main energy storage.
Der Erfindung liegt die Aufgabe zugrunde, ein Kraftfahrzeug der genannten Art anzugeben, das eine höhere Bandbreite der Nutzung elektrischer Energie sowie eine signifikante Steigerung der Lebenserwartung des Hauptenergiespeichers ermöglicht.
Diese Aufgabe wird erfindungsgemäß gelöst, indem der Neben- energiespeicher verbrauchsseitig über einen Vier-Quadranten- DCDC-Wandler mit dem Bordnetz verbunden ist.The invention has for its object to provide a motor vehicle of the type mentioned, which allows a higher bandwidth of the use of electrical energy and a significant increase in the life expectancy of the main energy storage. This object is achieved according to the invention by virtue of the fact that the secondary energy store is connected to the vehicle electrical system via a four-quadrant DCDC converter on the consumption side.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche .Advantageous embodiments of the invention are the subject of the dependent claims.
Die Erfindung geht von der Überlegung aus, dass jeder Energiespeicher ein Potential elektrischer Energie aufweist. Die- ses Potential wird allerdings nur bis zu einem vorgegebenen Spannungsniveau ausgenutzt. Im Falle eines Nebenenergiespei- chers ist dieses üblicherweise mit dem Spannungsniveau des Hauptenergiespeichers identisch. Eine höhere Bandbreite der Nutzung elektrischer Energie ist beispielsweise über die Nut- zung der Energie bis zu einem Energiepegel erreichbar, dessen absoluter Wert bei Null liegt.The invention is based on the consideration that each energy store has a potential of electrical energy. However, this potential is exploited only up to a predetermined voltage level. In the case of a secondary energy storage this is usually identical to the voltage level of the main energy storage. A higher bandwidth of the use of electrical energy can be achieved, for example, via the use of energy up to an energy level whose absolute value is zero.
Um die im Nebenenergiespeicher gespeicherte elektrische Energie möglichst vollständig nutzen und dadurch den Hauptener- giespeicher weitgehend von zyklischen Belastungen freihalten zu können, ist der Vier-Quadranten-DCDC-Wandler vorteilhafterweise derart voreingestellt, dass er die im kapazitiven Nebenenergiespeicher gespeicherte elektrische Energie bis auf ein Spannungsniveau, das unterhalb des Spannungsniveaus des Hauptenergiespeichers liegt, in bester Auslegung auf ein Spannungsniveau von 0 V, entladen kann.In order to use the electrical energy stored in the secondary energy store as completely as possible and thereby largely free the main energy storage from cyclic loads, the four-quadrant DCDC converter is advantageously preset such that it stores the electrical energy stored in the capacitive auxiliary energy storage up to a voltage level , which is below the voltage level of the main energy storage, the best design to a voltage level of 0 V can discharge.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass der Hauptenergiespeicher von zyklischen Belas- tungen weitgehend befreit und somit seine Lebenserwartung gegenüber der herkömmlichen Anwendung erhöht wird und dass der nutzbare Energieinhalt des Nebenenergiespeichers signifikant erhöht wird. Des Weiteren ist eine Bauraum- und Kostenreduzierung möglich.
Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung näher erläutert. Darin zeigt die Figur in schemati- scher Ansicht die elektrische Anlage eines Kraftfahrzeuges.The advantages achieved by the invention are, in particular, that the main energy storage device is largely freed from cyclical stresses and thus its life expectancy is increased compared to the conventional application and that the usable energy content of the auxiliary energy storage device is significantly increased. Furthermore, a space and cost reduction is possible. An embodiment of the invention will be explained in more detail with reference to a drawing. The figure shows a schematic view of the electrical system of a motor vehicle.
Die elektrische Anlage 1 eines Kraftfahrzeuges umfasst einen Generator 2, der bei Antrieb des Kraftfahrzeugs durch den hier nicht dargestellten Verbrennungsmotor die mechanische in elektrische Energie umsetzt oder in bestimmten Betriebs- zuständen rekuperiert . Dazu erfolgt typischerweise die Spei- cherung überschüssiger elektrischer Energie, die in Phasen günstiger Betriebszustände des Kraftfahrzeuges erzeugt wird, beispielsweise durch Rekuperation in einem Hauptenergiespei- eher 4 für den späteren Verbrauch in Phasen ungünstiger Betriebszustände. Der Hauptenergiespeicher 4 ist in den meisten Fällen als Batterie, deren Funktion auf elektrochemischen Prozessen basiert, ausgeführt.The electrical system 1 of a motor vehicle comprises a generator 2 which, when the motor vehicle is driven, converts the mechanical energy into electrical energy or recuperates it in certain operating states by means of the internal combustion engine (not shown here). Typically, this is done by storing excess electrical energy that is generated in phases of favorable operating states of the motor vehicle, for example by recuperation in a main energy storage 4 for later consumption in phases of unfavorable operating states. The main energy storage 4 is in most cases designed as a battery whose function is based on electrochemical processes.
Üblicherweise erfolgt die Versorgung von elektrischen Verbrauchern 10 des Bordnetzes 8 über die im Hauptenergiespei- eher 4 gespeicherte elektrische Energie oder direkt über denUsually, the supply of electrical loads 10 of the on-board network 8 takes place via the electrical energy stored in the main energy store 4 or directly via the vehicle
Generator 2.Generator 2.
Um den Hauptenergiespeicher 4 von den für den Fahrbetrieb eines Kraftfahrzeuges und den Verbrauch und die Erzeugung elek- trischer Energie typischen zyklischen Belastungen, die sich negativ auf seine Lebensdauer auswirken können, zu entlasten, umfasst die elektrische Anlage 1 neben dem Hauptenergiespei- eher 4 ebenfalls einen Nebenenergiespeicher 6, der sowohl das Bordnetz 8 mit einer Anzahl von Verbrauchern 10 speisen als auch die vom Generator 2 erzeugte oder rekuperierte Energie speichern kann. Dabei ist eine Ladung des Nebenenergiespei- chers 6 über das Spannungsniveau des Hauptenergiespeichers 4 möglich.In order to relieve the main energy store 4 of the cyclical loads which are typical for the driving operation of a motor vehicle and the consumption and the generation of electrical energy, which can have a negative effect on its service life, the electrical installation 1 also comprises one in addition to the main energy store 4 Nebenenergiespeicher 6, both the onboard electrical system 8 with a number of consumers 10 feed and can store the generated or recuperated by the generator 2 energy. In this case, it is possible to charge the secondary energy store 6 via the voltage level of the main energy store 4.
Zur Steuerung des Energieflusses für Verbrauch und Speicherung ist ein Steuergerät 12 vorgesehen, das die Höhe der Spannung im Hauptenergiespeicher 4 und im Nebenenergiespei-
eher 6 erfasst und auswertet und unter Berücksichtigung des Ergebnisses der Auswertung die Energieeinspeisung sowie den Abfluß von elektrischer Energie aus dem Nebenenergiespeicher 6 steuert, beispielsweise die Versorgung des Bordnetzes 8 durch den Nebenenergiespeicher 6. Dabei kann der Nebenenergiespeicher auf ein Spannungsniveau, das unterhalb des Spannungsniveaus des Hauptenergiespeichers 4 liegen kann, entladen werden.To control the energy flow for consumption and storage, a control unit 12 is provided which determines the magnitude of the voltage in the main energy storage 4 and in the secondary energy storage. rather 6 detects and evaluates and, taking into account the result of the evaluation, the energy supply and the outflow of electrical energy from the secondary energy storage 6 controls, for example, the supply of the electrical system 8 through the secondary energy storage 6. In this case, the secondary energy storage to a voltage level below the voltage level of Main energy storage 4 can be discharged.
Um die im Nebenenergiespeicher 6 gespeicherte elektrischeTo the stored in the secondary energy storage 6 electrical
Energie effektiv und vollständig nutzen zu können und nicht nur denjenigen Anteil, der oberhalb des Spannungsniveaus des Hauptenergiespeichers 4 liegt, ist dem Nebenenergiespeicher 6 ein Vier-Quadranten-DCDC-Wandler 18 zugeordnet, der die Ent- ladung der im Nebenenergiespeicher 6 gespeicherten elektrischen Energie und deren Einspeisung in das Bordnetz 8 bis auf ein Spannungsniveau unterhalb des Spannungsniveaus des Haupt- energiespeichers 4 ermöglicht. Im bestem Fall erfolgt die Ausnutzung der elektrischen Energie des Nebenenergiespeichers 6 über den Vier-Quadranten-DCDC-Wandler 18 bis zu einem Spannungsniveau von 0 V, wobei der Hauptenergiespeicher 4 von zyklischen Belastungen solange freigestellt ist, wie die elektrische Energie im Nebenenergiespeicher 6 nutzbar ist.
To be able to use energy effectively and completely and not only that portion which is above the voltage level of the main energy store 4, the secondary energy store 6 is assigned a four-quadrant DCDC converter 18, which discharges the electrical energy stored in the secondary energy store 6 whose feed into the electrical system 8 allows a voltage level below the voltage level of the main energy storage 4. In the best case, the utilization of the electrical energy of the secondary energy storage 6 via the four-quadrant DCDC converter 18 takes place up to a voltage level of 0 V, the main energy storage 4 is free of cyclic loads as long as the electrical energy in the secondary energy storage 6 is available ,
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 elektrische Anlage1 electrical system
2 Generator2 generator
4 Hauptenergiespeicher4 main energy storage
6 kapazitiver Nebenenergiespeicher6 capacitive secondary energy storage
8 Bordnetz8 electrical system
10 Verbraucher10 consumers
12 Steuergerät12 control unit
14 DCDC-Wandler
14 DCDC converters
Claims
1. Kraftfahrzeug mit einer Anzahl von über das Bordnetz (8) mit elektrischer Energie betriebenen Verbrauchern (10) und einem Hauptenergiespeicher (8) und einem Nebenenergiespeicher (6), dadurch gekennzeichnet , dass der Nebenenergiespeicher (6) verbrauchsseitig über einen Vier-Quadranten-DCDC-Wandler (14) mit dem Bordnetz (8) ver- bunden ist.1. Motor vehicle with a number of via the electrical system (8) powered by electrical energy consumers (10) and a main energy storage (8) and a secondary energy storage (6), characterized in that the secondary energy storage (6) consumption side over a four-quadrant DCDC converter (14) to the electrical system (8) is connected.
2. Kraftfahrzeug nach Anspruch 1, dessen Vier-Quadranten- DCDC-Wandler (14) derart konfiguriert ist, dass der ihm zugeordnete Nebenenergiespeicher (6) auf ein Spannungsniveau un- terhalb des Spannungsniveaus des Hauptenergiespeichers (8) entladen werden kann.2. Motor vehicle according to claim 1, whose four-quadrant DCDC converter (14) is configured such that its associated auxiliary energy storage (6) can be discharged to a voltage level below the voltage level of the main energy storage (8).
3. Kraftfahrzeug nach Anspruch 1 oder 2, dessen Vier-Quadranten-DCDC-Wandler (14) derart konfiguriert ist, dass der ihm zugeordnete Nebenenergiespeicher (6) auf ein Spannungsniveau von 0 V entladen werden kann. 3. Motor vehicle according to claim 1 or 2, whose four-quadrant DCDC converter (14) is configured such that its associated auxiliary energy storage (6) can be discharged to a voltage level of 0V.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006013126 | 2006-03-20 | ||
| PCT/DE2007/000326 WO2007110016A1 (en) | 2006-03-20 | 2007-02-21 | Power supply circuit comprising a four-quadrant dc/dc converter for an automotive on-board power supply network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1997207A1 true EP1997207A1 (en) | 2008-12-03 |
Family
ID=38229885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07721941A Withdrawn EP1997207A1 (en) | 2006-03-20 | 2007-02-21 | Power supply circuit comprising a four-quadrant dc/dc converter for an automotive on-board power supply network |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090091184A1 (en) |
| EP (1) | EP1997207A1 (en) |
| DE (1) | DE112007000040A5 (en) |
| WO (1) | WO2007110016A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348242A (en) * | 2013-08-01 | 2015-02-11 | 南京普爱射线影像设备有限公司 | Power management apparatus and method for X-ray machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373195A (en) * | 1992-12-23 | 1994-12-13 | General Electric Company | Technique for decoupling the energy storage system voltage from the DC link voltage in AC electric drive systems |
| US5723956A (en) * | 1996-05-28 | 1998-03-03 | General Electric Company | Low cost electronic ultracapacitor interface technique to provide load leveling of a battery for pulsed load or motor traction drive applications |
| JP2002305875A (en) * | 2001-04-04 | 2002-10-18 | Toyota Motor Corp | Voltage changer |
| US6710574B2 (en) * | 2001-09-21 | 2004-03-23 | Eaton Corporation | Reversible DC motor drive including a DC/DC converter and four quadrant DC/DC controller |
| US7084525B2 (en) * | 2003-08-28 | 2006-08-01 | Delphi Technologies, Inc. | Power system to transfer power between a plurality of power sources |
-
2007
- 2007-02-21 US US12/282,553 patent/US20090091184A1/en not_active Abandoned
- 2007-02-21 WO PCT/DE2007/000326 patent/WO2007110016A1/en active Application Filing
- 2007-02-21 EP EP07721941A patent/EP1997207A1/en not_active Withdrawn
- 2007-02-21 DE DE112007000040T patent/DE112007000040A5/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007110016A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090091184A1 (en) | 2009-04-09 |
| DE112007000040A5 (en) | 2008-06-26 |
| WO2007110016A1 (en) | 2007-10-04 |
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