DE102016208148A1 - Energy storage system for an electrically powered vehicle - Google Patents
Energy storage system for an electrically powered vehicle Download PDFInfo
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- DE102016208148A1 DE102016208148A1 DE102016208148.9A DE102016208148A DE102016208148A1 DE 102016208148 A1 DE102016208148 A1 DE 102016208148A1 DE 102016208148 A DE102016208148 A DE 102016208148A DE 102016208148 A1 DE102016208148 A1 DE 102016208148A1
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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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
- B60L58/12—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
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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
- B60L58/20—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
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
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- 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
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Ein Energiespeichersystem (100) für ein elektrisch angetriebenes Fahrzeug umfasst eine erste Energiespeichereinheit (102), die eine zum Betrieb wenigstens eines Elektromotors (110) des Fahrzeugs ausreichende Grundleistung bereitstellt und mit einem Elektromotor (110) des Fahrzeugs verbunden ist, und eine zweite Energiespeichereinheit (104), die eine Zusatzleistung zum Betrieb eines Elektromotors (110) des Fahrzeugs bereitstellt und die zur ersten Energiespeichereinheit (102) parallel geschaltet ist, wobei die erste und die zweite Energiespeichereinheit (102, 104) über einen DC/DC-Wandler (112) miteinander verbunden sind. Des Weiteren ist ein Verfahren zum Betreiben eines elektrisch angetriebenen Fahrzeugs mit einem Energiespeichersystem (100) vorgesehen.An energy storage system (100) for an electrically powered vehicle includes a first energy storage unit (102) that provides sufficient basic power to operate at least one electric motor (110) of the vehicle and is connected to an electric motor (110) of the vehicle, and a second energy storage unit (10). 104) which provides an auxiliary power to operate an electric motor (110) of the vehicle and which is connected in parallel with the first energy storage unit (102), the first and second energy storage units (102, 104) being connected via a DC / DC converter (112). connected to each other. Furthermore, a method for operating an electrically driven vehicle with an energy storage system (100) is provided.
Description
Die Erfindung betrifft ein Energiespeichersystem für ein elektrisch angetriebenes Fahrzeug.The invention relates to an energy storage system for an electrically driven vehicle.
Bei elektrisch angetriebenen Fahrzeugen, sowohl bei PHEV-Fahrzeugen (plug-in hybrids) als auch bei rein elektrisch betriebenen Fahrzeugen (BEV), dient gegenwärtig eine aus einer oder mehreren einzelnen Batteriezellen als Energiespeicher zusammengesetzte Energiespeichereinheit als Energiequelle. Die Batteriezellen sind meist einzelne Lithium-Ionen-Zellen. Diese sind seriell oder in einer Kombination aus seriellen und parallelen Schaltungen miteinander verbunden. Summe und Art der Verschaltung der Batteriezellen bestimmen die zur Verfügung stehende Energie und damit die Reichweite eines elektrisch betriebenen Fahrzeugs. Eine spezifische Energiespeichereinheit liefert dabei in einem vorbestimmten Spannungsbereich stets eine vorbestimmte maximale Stromstärke, die von deren Art und Aufbau abhängt und unveränderlich ist. Somit wird auch gleichzeitig die Leistung des elektrisch angetriebenen Fahrzeugs durch die verwendete Energiespeichereinheit festgelegt, da diese durch ein festes Verhältnis von Leistung zu Energie charakterisiert ist.In electrically driven vehicles, both PHEV vehicles (plug-in hybrids) and purely electrically powered vehicles (BEV), an energy storage unit composed of one or more individual battery cells as an energy store currently serves as an energy source. The battery cells are usually individual lithium-ion cells. These are connected in series or in a combination of serial and parallel circuits. The sum and type of interconnection of the battery cells determine the available energy and thus the range of an electrically operated vehicle. A specific energy storage unit always delivers a predetermined maximum current in a predetermined voltage range, which depends on its type and structure and is immutable. Thus, at the same time the power of the electrically driven vehicle is determined by the energy storage unit used, since this is characterized by a fixed ratio of power to energy.
Dies führt dazu, dass in einer Produktpalette von elektrisch angetriebenen Serienfahrzeugen keine Leistungsstaffelungen angeboten werden können, wie dies von Fahrzeugen mit Verbrennungsmotoren bekannt ist, wo unterschiedliche Motoren in einem ansonsten weitgehend unveränderten Fahrzeugmodell eingesetzt werden. Für den Verbraucher stellte diese Auswahlmöglichkeit in der Vergangenheit eine wichtige Kaufentscheidung dar.As a result, power stacks can not be offered in a range of electrically powered production vehicles, as known from internal combustion engine engines, where different engines are used in an otherwise largely unchanged vehicle model. For consumers, this choice has been an important buying decision in the past.
Aus der
Im Betrieb des in der
Aufgabe der Erfindung ist es, ein Energiespeichersystem für elektrisch angetriebene Fahrzeuge bereitzustellen, das dauerhaft die volle Systemleistung sicherstellt.The object of the invention is to provide an energy storage system for electrically powered vehicles, which ensures the full system performance permanently.
Zur Lösung der Aufgabe ist ein Energiespeichersystem für ein elektrisch angetriebenes Fahrzeug vorgesehen, das eine erste Energiespeichereinheit, die eine zum Betrieb wenigstens eines Elektromotors des Fahrzeugs ausreichende Grundleistung bereitstellt und mit einem Elektromotor des Fahrzeugs verbunden ist, und eine zweite Energiespeichereinheit aufweist, die eine Zusatzleistung zum Betrieb eines Elektromotors des Fahrzeugs bereitstellt und die zur ersten Energiespeichereinheit parallel geschaltet ist, wobei die erste und die zweite Energiespeichereinheit über einen DC/DC-Wandler miteinander verbunden sind. Mittels des DC/DC-Wandlers ist elektrische Energie von einer Energiespeichereinheit auf die andere Energiespeichereinheit übertragbar. Auf diese Weise ist es möglich, die zweite Energiespeichereinheit aufzuladen, um sicherzustellen, dass die volle Systemleistung zur Verfügung steht. Insbesondere kann die Energiespeichereinheit aufgeladen werden, bevor ihr Energieinhalt einen Wert unterschreitet, der zu einer Verringerung der Systemleistung führen würde.To achieve the object, an energy storage system for an electrically driven vehicle is provided, which provides a first energy storage unit, which is sufficient for operating at least one electric motor of the vehicle basic power and connected to an electric motor of the vehicle, and a second energy storage unit, which is an additional power to Operation of an electric motor of the vehicle provides and which is connected in parallel to the first energy storage unit, wherein the first and the second energy storage unit are connected to each other via a DC / DC converter. By means of the DC / DC converter, electrical energy can be transferred from one energy storage unit to the other energy storage unit. In this way, it is possible to charge the second energy storage unit to ensure full system performance is available. In particular, the energy storage unit can be charged before its energy content falls below a value that would lead to a reduction in system performance.
Es kann mindestens eine weitere Energiespeichereinheit vorgesehen sein, wobei jede Energiespeichereinheit über einen DC/DC-Wandler mit mindestens einer anderen Energiespeichereinheit verbunden ist. Zusätzliche Energiespeichereinheiten haben den Vorteil, dass dem Energiespeichersystem mehr Energie zur Verfügung steht, die beispielsweise zur Leistungssteigerung genutzt werden kann. Indem die Energiespeichereinheiten untereinander über DC/DC-Wandler verbunden sind, lässt sich die Energie unter den verbundenen Energiespeichereinheiten verteilen, um beispielsweise dauerhaft die volle Systemleistung zu gewährleisten.At least one further energy storage unit may be provided, each energy storage unit being connected to at least one other energy storage unit via a DC / DC converter. Additional energy storage units have the advantage that the energy storage system more energy is available, which can be used for example to increase performance. By the energy storage units are interconnected via DC / DC converter, the energy can be distributed among the connected energy storage units, for example, to ensure full system performance permanently.
Die Verbindung der Energiespeichereinheiten ist vorzugsweise derart gestaltet, dass eine Energiespeichereinheit durch die mit ihr verbundene(n) Energiespeichereinheit(en) aufladbar ist. Somit kann verhindert werden, dass der Energieinhalt einer Energiespeichereinheit unter einen Wert absinkt, der zu einer Verringerung der Systemleistung führt.The connection of the energy storage units is preferably designed such that an energy storage unit can be charged by the energy storage unit (s) connected to it. Thus, the energy content of an energy storage unit can be prevented from falling below a value that results in a decrease in system performance.
Gemäß einer vorteilhaften Ausführungsform sind alle Energiespeichereinheiten über einen Inverter mit einem Elektromotor des Fahrzeugs verbunden, insbesondere wobei jeder der Energiespeichereinheiten ein eigener Inverter zugeordnet ist, über den sie mit einem Elektromotor des Fahrzeugs verbunden ist. Der Inverter, der aus dem von den Energiespeichereinheiten gelieferten Gleichstrom den zum Betrieb des Elektromotors notwendigen Wechselstrom erzeugt, ist zwischen den Energiespeichereinheiten und dem Elektromotor angeordnet. Hierbei kann ein gemeinsamer Inverter beiden Energiespeichereinheiten nachgeschaltet sein. Es ist aber auch möglich, jeder der Energiespeichereinheiten einen eigenen Inverter zuzuordnen. In diesem Fall sind so viele Inverter wie Energiespeichereinheiten vorgesehen.According to an advantageous embodiment, all the energy storage units are connected via an inverter to an electric motor of the vehicle, in particular wherein each of the energy storage units is assigned its own inverter via it is connected to an electric motor of the vehicle. The inverter, which generates from the supplied from the energy storage units DC the necessary for the operation of the electric motor AC power is disposed between the energy storage units and the electric motor. In this case, a common inverter can be connected downstream of both energy storage units. But it is also possible to assign each of the energy storage units its own inverter. In this case, as many inverters as energy storage units are provided.
Die Energiespeichereinheiten können mit mehreren Elektromotoren des Fahrzeugs verbunden sein.The energy storage units may be connected to a plurality of electric motors of the vehicle.
In einer bevorzugten Ausführungsform ist jeweils eine Energiespeichereinheit mit einem Elektromotor des Fahrzeugs verbunden. Hierdurch ist für jeden Elektromotor eine eigene Energiespeichereinheit vorgesehen, die an die Anforderungen des Elektromotors individuell angepasst sein kann.In a preferred embodiment, an energy storage unit is in each case connected to an electric motor of the vehicle. As a result, a separate energy storage unit is provided for each electric motor, which can be adapted individually to the requirements of the electric motor.
In einer alternativen Ausführungsform sind jeweils mindestens zwei Energiespeichereinheiten mit einem Elektromotor des Fahrzeugs verbunden. Auf diese Weise kann die Leistung jedes Elektromotors modular über die Anzahl bzw. Leistungsfähigkeit der einzelnen Energiespeichereinheiten angepasst werden. Darüber hinaus bieten mehrere Energiespeichereinheiten Redundanz, die dafür sorgt, dass es auch dann möglich ist, den Elektromotor anzutreiben, wenn ein Teil der mit ihm verbundenen Energiespeichereinheiten ausfällt.In an alternative embodiment, at least two energy storage units are each connected to an electric motor of the vehicle. In this way, the power of each electric motor can be modularly adjusted by the number or performance of the individual energy storage units. In addition, multiple energy storage units provide redundancy, which ensures that it is possible to drive the electric motor even if some of the energy storage units connected to it fail.
Die maximale Leistung der DC/DC-Wandler kann weniger als 100 kW, bevorzugt weniger als 50 kW und besonders bevorzugt weniger als 25 kW betragen. Für die Aufgabe der DC/DC-Wandler, den Energietransfer zwischen den Energiespeichereinheiten zu ermöglichen, sind keine großen maximalen Leistungen erforderlich, da der Energietransfer frühzeitig und damit über einen großen Zeitraum erfolgen kann. Deshalb können hierzu DC/DC-Wandler mit einer vergleichsweisen geringen maximalen Leistung eingesetzt und damit die Kosten gering gehalten werden.The maximum power of the DC / DC converters can be less than 100 kW, preferably less than 50 kW and particularly preferably less than 25 kW. For the task of DC / DC converters, to enable the energy transfer between the energy storage units, no large maximum power is required because the energy transfer can take place early and thus over a long period of time. For this reason, DC / DC converters with comparatively low maximum power can be used for this purpose, thus keeping costs low.
Jede der Energiespeichereinheiten enthält eine oder mehrere Energiespeicher, die jeweils aus einer Vielzahl seriell und/oder parallel verschalteter einzelner Batteriezellen bestehen. Es können Batteriezellen beliebiger Art eingesetzt werden, beispielsweise Lithium-Ionen-Zellen, Metallhydrid-Zellen oder Metall-Luft-Zellen, aber auch Hybridkondensatoren, Doppelschichtkondensatoren oder Pseudokondensatoren. Ebenso kann es sich bei einer der Energiespeichereinheiten um einen Brennstoffzellenstack oder mehrere elektrisch miteinander verschaltete Brennstoffzellenstacks handeln.Each of the energy storage units contains one or more energy stores, each consisting of a plurality of serially and / or parallel interconnected individual battery cells. It can be used battery cells of any kind, for example, lithium-ion cells, metal hydride cells or metal-air cells, but also hybrid capacitors, double-layer capacitors or pseudocondensers. Likewise, one of the energy storage units may be a fuel cell stack or a plurality of fuel cell stacks electrically interconnected with one another.
Erfindungsgemäß ist zur Lösung der oben genannten Aufgabe auch ein Verfahren zum Betreiben eines elektrisch angetriebenen Fahrzeugs mit einem erfindungsgemäßen Energiespeichersystem vorgesehen, bei dem eine Energiespeichereinheit aufgeladen wird, sobald ihr Energieinhalt einen festgelegten Wert unterschreitet. Auf diese Weise kann die volle Systemleistung sichergestellt werden, indem die Energiespeichereinheit aufgeladen wird, bevor ihr Energieinhalt einen Wert erreicht, der die Systemleistung signifikant beeinträchtigt.According to the invention, a method for operating an electrically driven vehicle with an energy storage system according to the invention is provided to solve the above object, in which an energy storage unit is charged as soon as its energy content falls below a predetermined value. In this way, full system performance can be ensured by charging the energy storage unit before its energy content reaches a value that significantly degrades system performance.
Vorzugsweise wird in Schritt a) die Energiespeichereinheit durch die mit ihr verbundenen Energiespeichereinheiten aufgeladen. Dieses Aufladen erfolgt insbesondere dadurch, dass elektrische Energie über die hierzu vorgesehenen DC/DC-Wandler von den verbundenen Energiespeichereinheiten auf die Energiespeichereinheit übertragen wird.Preferably, in step a) the energy storage unit is charged by the energy storage units connected to it. This charging takes place in particular in that electrical energy is transmitted via the DC / DC converter provided for this purpose from the connected energy storage units to the energy storage unit.
Weitere Vorteile und Merkmale ergeben sich aus der nachfolgenden Beschreibung in Verbindung mit den beigefügten Zeichnungen. In diesen zeigen:Further advantages and features will become apparent from the following description taken in conjunction with the accompanying drawings. In these show:
In
Die erste Energiespeichereinheit
Das Energiespeichersystem
Der DC/DC-Wandler
In einer alternativen Ausführungsform kann die maximale Leistung des DC/DC-Wandlers
Theoretisch Ist es denkbar, dass das Energiespeichersystem
In
Generell können alle Energiespeichereinheiten
Im Betrieb eines Fahrzeugs mit einem erfindungsgemäßen Energiespeichersystem
Zum Aufladen von Energiespeichereinheiten
Der Wert, bei dem ein Aufladen erfolgt, kann individuell für jede Energiespeichereinheit
Ferner kann ein Aufladen nur dann erfolgen, wenn Energiespeichereinheiten
Es kann vorgesehen sein, dass bevorzugt oder ausschließlich ausgewählte Energiespeichereinheiten
In einer nicht dargestellten Ausführungsform können einzelne oder alle Energiespeichereinheiten
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
- WO 20151067455 A1 [0004] WO 20151067455 A1 [0004]
- WO 2015/067456 A1 [0005] WO 2015/067456 A1 [0005]
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102018103709A1 (en) * | 2018-02-20 | 2019-08-22 | stoba e-Systems GmbH | Powertrain with two different voltage emitting batteries, electric drive system with low-voltage bars surrounding high-voltage windings, electric motor with separate high-voltage pulse inverter and method for operating an electric motor |
DE102019106186A1 (en) * | 2019-03-12 | 2020-09-17 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Battery device for supplying an energy requirement of an electric vehicle drive |
DE102019115210A1 (en) * | 2019-06-05 | 2020-12-10 | Johannes Köhler | Electric vehicle with additional drive batteries |
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DE102018103709A1 (en) * | 2018-02-20 | 2019-08-22 | stoba e-Systems GmbH | Powertrain with two different voltage emitting batteries, electric drive system with low-voltage bars surrounding high-voltage windings, electric motor with separate high-voltage pulse inverter and method for operating an electric motor |
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CN112770931A (en) * | 2018-09-28 | 2021-05-07 | 斯堪尼亚商用车有限公司 | Method and control device for controlling the energy level of an energy storage device in a vehicle |
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DE102019106186B4 (en) | 2019-03-12 | 2024-09-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Battery device for supplying the energy requirements of an electric vehicle drive |
DE102019115210A1 (en) * | 2019-06-05 | 2020-12-10 | Johannes Köhler | Electric vehicle with additional drive batteries |
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