WO2015043696A1 - Système d'accumulation d'énergie - Google Patents

Système d'accumulation d'énergie Download PDF

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Publication number
WO2015043696A1
WO2015043696A1 PCT/EP2014/002137 EP2014002137W WO2015043696A1 WO 2015043696 A1 WO2015043696 A1 WO 2015043696A1 EP 2014002137 W EP2014002137 W EP 2014002137W WO 2015043696 A1 WO2015043696 A1 WO 2015043696A1
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WO
WIPO (PCT)
Prior art keywords
energy storage
state
voltage
capacitor device
energy
Prior art date
Application number
PCT/EP2014/002137
Other languages
German (de)
English (en)
Inventor
Josef Winkler
Michael Wansner
Original Assignee
Audi Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi Ag filed Critical Audi Ag
Publication of WO2015043696A1 publication Critical patent/WO2015043696A1/fr

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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
    • H02J7/34—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
    • 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
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • 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
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
    • H02J7/00041—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors in response to measured battery parameters, e.g. voltage, current or temperature profile
    • 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
    • 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
    • B60L2240/545—Temperature
    • 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
    • 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
    • B60L2240/549—Current
    • 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
    • B60L2240/66—Ambient conditions
    • B60L2240/662—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0888—DC/DC converters
    • 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
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to an energy storage arrangement comprising an electrical energy store formed from a number of electrically interconnected memory elements and at least one electrical capacitor device which can be changed in its voltage state.
  • Corresponding energy storage arrangements are known and are typically used in on-board networks of motor vehicles for the supply of on-board network side, d. H. used to the electrical system, electrical consumers used.
  • the electrical consumers are supplied via the energy storage device associated energy storage with electrical energy, short power.
  • the invention is therefore based on the object of specifying an improved energy storage arrangement.
  • an energy storage arrangement of the type mentioned which is by a control device which is adapted to determine at least one state information, which state information at least one of the terminal voltage of the energy storage influencing variable describes, and the voltage state of the at least one capacitor means depending on the state information to control.
  • the energy storage device comprises an electrical energy store.
  • the energy store is formed from a number of electrically interconnected electrical storage elements or electrical storage cells and at least one electrically interconnected with these capacitor device. Typically, the memory elements and the capacitor device are electrically interconnected in series.
  • the energy storage, d. H. in particular the capacitor device a control device is assigned. Via the control device, the voltage state of the capacitor device can be controlled, i. H. in particular, adjust.
  • the control device is accordingly set up, directly or indirectly, d. H. with the interposition of at least one further, in particular electronic, component, to interact with the capacitor device or to cooperate therewith in order to adjust or adapt the voltage state and thus the state of charge of the capacitor device.
  • the need-based and thus targeted adjustment or adaptation of the voltage state or state of charge of the capacitor device and thus the voltage drop across the capacitor device takes place in dependence on a voltage applied to the energy storage terminal Voltage related state information.
  • Under the terminal voltage of the energy storage is to be understood at the electrical terminals or terminals, ie typically an energy storage side plus and a energy storage side minus pole, applied electrical voltage.
  • the terminal voltage of the energy store is in particular of its internal resistance and thus correlated variables such. B. the aging and / or state of charge, the energy storage dependent.
  • the state information therefore describes at least one quantity which influences the terminal voltage of the energy store.
  • a size can therefore z. B. be the temperature of the energy storage, as this has a significant impact on the terminal voltage of the energy storage.
  • a corresponding quantity is to be understood as meaning any physical quantity which is related to the terminal voltage in such a way that a change in the size means (at least potentially) a change in the terminal voltage of the energy store.
  • the state information is continuous or discontinuous, i. H. at certain times or at certain time intervals, determined by the controller.
  • the control device with certain sensors for detecting or detecting certain physical parameters of the energy storage and / or the environment of the energy storage and / or the energy storage receiving application, such.
  • a motor vehicle be equipped respectively with such sensors, for. B. via a communication network, communicate and evaluate corresponding sensor-supplied sensor information and process.
  • a needs-based or targeted influencing the terminal voltage of the energy storage can be realized, which in turn ensures a required operating voltage absorb the energy storage device according to the invention the electrical network, in particular a motor vehicle associated vehicle electrical system with an operating voltage in the range of about 13 to 15 volts enabled.
  • the control device is set up, taking into account the state information, ie. H. in particular on the basis of the state information, to determine a target terminal voltage for the energy store and to adjust the voltage state of the capacitor device with regard to the determined target terminal voltage.
  • the target terminal voltage for the energy storage is in particular a terminal voltage, which is necessary under the currently given, in particular climatic and / or energy storage specific, conditions for proper operation of the energy storage device or connected to this electrical consumers.
  • a corresponding target terminal voltage can be determined accordingly, in particular on the basis of a comparison of a setpoint voltage or setpoint terminal voltage with an actual voltage or actual terminal voltage of the energy store.
  • the voltage state of the capacitor device is adjusted accordingly to set the currently given terminal voltage of the energy storage to the target terminal voltage.
  • the target terminal voltage when using the energy storage device in a vehicle-side electrical system indicate a value in the range of about 13 to 15 volts.
  • the target terminal voltage does not have to be a static value, but rather can be determined as a function of, in particular, the current state of the energy store, i. H. the currently applied terminal voltage, and the currently given conditions, including z. B. climatic conditions and a present decommissioning of the energy storage are to be understood, choose individually.
  • the predetermined by the controller target terminal voltage for example, 13 volts, ie the terminal voltage of the energy storage is to increase in amount by 3 volts to reach the target terminal voltage.
  • the increase in the terminal voltage by the required 3 volts is carried out via a corresponding control of the capacitor device, ie via an adjustment of their state of charge or voltage state, which state of charge or voltage state is increased such that the necessary to reach the target terminal voltage 3 volts are provided via the capacitor device , In this way, the terminal voltage of the energy accumulator can be raised specifically to the 13 volts corresponding to the target terminal voltage.
  • the state information may in particular describe at least one, preferably several or all, of the following variables: aging state of the energy store, in particular of the storage elements, operating state of the energy store, in particular a current or future load on the energy store, internal temperature of the energy store, in particular the storage elements, ambient temperature around the energy store , State of charge of the energy storage, in particular of the storage elements.
  • the variables can enter into the state information on the basis of sensor information supplied by the sensor. The list is not exhaustive. In principle, state information can describe all variables associated with the terminal voltage or the internal resistance of the energy store. It is therefore also conceivable, for example, to use the state information to describe a driving state of a motor vehicle having the energy storage arrangement or a non-driving state of the motor vehicle in which the motor vehicle is parked or taken out of operation.
  • a further embodiment of the energy storage arrangement according to the invention provides at least one bidirectional DC-DC converter connected in parallel with the at least one capacitor device, ie. H. a so-called DC / DC converter, in front.
  • the control device is set up to control the DC-DC converter in such a way that there is a change in the voltage drop across the at least one capacitor device.
  • the DC-DC converter may be z. B. to act as a synchronous converter, since on the capacitor side facing away from the capacitor side output side of the DC-DC converter typically no voltages must be output that are higher than the voltages on the input side.
  • the voltage drop across the at least one capacitor device is expediently variable in dependence on the charge state or voltage state of the capacitor device in a range between 0 and 5 volts, in particular between 0 and 3 volts.
  • the variable voltage drop and the variable state of charge or voltage state of the capacitor device correlated therewith is particularly dependent on which operating voltage is supplied via the energy store in a specific application or which voltage is to be compensated via the capacitor device, in a suitable manner to the terminal voltage of the energy store adjust.
  • the storage elements and the at least one capacitor device are integrated in a common housing part.
  • the memory elements and the capacitor device (s) are arranged or accommodated in a common housing part. It can therefore be a compact and easy to handle component group in the energy storage.
  • the energy storage associated memory elements may, for. B. on lithium or a lithium compound, in particular a lithium-cobalt manganese-nickel compound based. It can therefore be so-called NMC memory elements.
  • the use of storage elements based on lithium or lithium compounds is particularly advantageous because of their cycle stability. In principle, the number and the chemical composition of the storage elements are to be selected such that an operating voltage required for an intended use of the energy storage arrangement can be realized.
  • the storage elements associated with the energy store do not have to have the same chemical composition.
  • the at least one capacitor device may be a double-layer capacitor or comprise a double-layer capacitor. Double-layer capacitors, which are also referred to as supercaps, are advantageous for example because they generally have small internal resistances and a large number of possible charging or discharging cycles. Consequently, the property profile of the energy storage can be improved by the formation of the capacitor device as a double-layer capacitor, in particular with regard to a low internal resistance.
  • the energy storage arrangement according to the invention can form part of an on-board network of a motor vehicle, the on-board network having at least one generator, in particular for charging the energy store, ie. H. in particular, the associated memory elements and this associated capacitor device, and at least one electrical energy consuming consumer comprises.
  • the electrical system for example, has an operating voltage in the range of about 13 to about 15 volts when it forms part of a motor vehicle.
  • the invention further relates to a motor vehicle comprising at least one energy storage arrangement as described above.
  • the 'energy storage assembly typically forms a part of an onboard network of the motor vehicle. All statements relating to the energy storage arrangement according to the invention can be analogously transferred to the motor vehicle according to the invention, with which consequently the advantages mentioned in connection with the energy storage arrangement can be achieved.
  • the invention further relates to a method for operating an energy storage arrangement connected in an electrical system of a motor vehicle, in particular an energy storage arrangement as described above, comprising an electrical energy store formed from a number of electrically interconnected memory elements and at least one electrical capacitor device changeable in their voltage state.
  • the method is characterized in that at least one accessory State information, which describes state information at least one of the terminal voltage of the energy storage influencing variable, is determined and the electrical voltage state of the at least one capacitor device is set in dependence of the state information.
  • the above embodiments can also be transferred to the inventive method with regard to the energy storage arrangement according to the invention, so that the advantages mentioned in connection with the energy storage arrangement can also be achieved via the method according to the invention, which can be realized in particular in a control device.
  • FIG. 1 shows a vehicle electrical system of a motor vehicle with an energy storage arrangement according to an embodiment of the invention
  • FIG. 2 shows a diagram of the profile of a voltage U versus the state of charge SOC of an energy store of an energy storage system according to an exemplary embodiment of the invention.
  • the energy storage arrangement 1 shows an energy storage arrangement 1 according to an exemplary embodiment of the invention, which energy storage arrangement 1 is connected in a vehicle electrical system 2 of a motor vehicle (not shown).
  • the energy storage arrangement 1 comprises an electrical energy store 3 which is formed from three series-connected electrical storage elements 4 and a capacitor device 5 connected in series therewith.
  • the memory elements 4 are NMC memory elements, ie the memory elements 4 are based on a lithium-cobalt-manganese-nickel compound.
  • the capacitor device 5 is a double-layer capacitor.
  • the energy storage 3 can, for. B. be used as a starter battery of the motor vehicle.
  • the capacitor device 5 is assigned a bidirectional DC-DC converter 6.
  • the DC-DC converter 6 is connected in parallel to the capacitor device 5. In the DC-DC converter 6 is z. Example, to a synchronous converter, since on the capacitor device 5 facing away from the output side of the DC-DC converter 6 no voltages must be output, which are higher than the voltages on the input side.
  • the state of charge or voltage state of the capacitor device 5 can be selectively influenced and adjusted accordingly.
  • a control device 7 is provided, which is set up to control the DC-DC converter 6 in such a way that a change in the voltage drop across the capacitor device 5 results.
  • the control device 7 is the energy storage device 1 associated.
  • the voltage drop across the capacitor device 5 can, depending on the state of charge or voltage state of the capacitor device 5 z. B. in a range between 0 and 5 volts, in particular between 0 and 3 volts, be variable.
  • the essential components of the energy storage 3, d. H. the memory elements 4, the capacitor device 5, the DC-DC converter 6 and the control device 7 are arranged in a common energy storage housing 8 or integrated into this. It is in the energy storage 3 therefore a compact and easy to handle component group.
  • the described configuration of the energy storage device 1 makes it possible in principle to control the state of charge or voltage state of the capacitor device 5.
  • the state of charge or voltage state of the capacitor device 5 has an effect on the terminal voltage of the energy store 3.
  • Under the terminal voltage of the energy storage 3 is the at the electrical terminals or terminals, ie typically an energy storage side plus and an energy storage side negative pole to understand voltage applied.
  • the typically continuously determined state information describes various physical variables influencing the terminal voltage of the energy store 3. These include, in particular, the aging state of the energy store 3, in particular the storage elements 4, the operating state, in particular the current or future load, the energy store 3, the internal temperature of the energy store 3, in particular the storage elements 4, the ambient temperature to the energy storage 3, the state of charge of the energy storage 3, in particular the memory elements 4 etc.
  • the control device 7 is connected to sensors (not shown) on the energy storage side and / or on the motor vehicle, whose sensor signals provide information about the stated physical quantities, ie, for example, the state of charge and the temperature of the energy store.
  • sensors not shown
  • the control device 7 can via a communication network, such. As a bus system, done.
  • the control device 7 can determine a target terminal voltage for the energy store 3 and adjust or adjust the state of charge or voltage state of the capacitor device 5 with regard to the determined target terminal voltage.
  • the target terminal voltage for the energy storage 3 represents a terminal voltage which is necessary or expedient under the currently given, in particular climatic and / or energy storage-specific, conditions for proper operation of the energy storage device or the electrical consumers connected thereto.
  • a corresponding target terminal voltage can be determined, in particular based on a comparison of a setpoint voltage or nominal terminal voltage with an actual voltage or actual terminal voltage of the energy store 3.
  • the state of charge or voltage state of the capacitor device 5 is adjusted accordingly via the DC voltage converter 6 controlled via the control device 7 in order to set the current terminal voltage of the energy store 3 to the target terminal voltage.
  • the target terminal voltage may indicate a value in the range of about 13 to 15 volts.
  • the motor vehicle has been taken out of operation for a long time, ie, for example, for one or more days at low outside temperatures, ie in particular at outside temperatures below 0 ° C. Due to the self-discharge of the energy store 3, that is, the memory elements 4 associated therewith, and the cooling of the energy store 3 caused by the low outside temperature, this has a NEN high internal resistance and thus a comparatively low terminal voltage in the range of about 10 volts.
  • All variables influencing the terminal voltage are mapped by the control device 7 via the determined state information.
  • the predetermined by the controller 7 target terminal voltage is for example 13 volts, d. H.
  • the terminal voltage of the energy storage 3 is to be increased in amount by 3 volts to reach the target terminal voltage.
  • the increase of the terminal voltage by the required 3 volts is carried out via a control of the DC-DC converter 6 and thus the capacitor device 5, d. H.
  • the state of charge or voltage state of the capacitor device 5 is correspondingly increased in order to provide the 3 volts required to reach the target terminal voltage. In this way, the terminal voltage of the energy store 3 can be raised in a targeted manner to the 13 volt corresponding to the target terminal voltage.
  • FIG. 2 shows a diagram for the course of an electrical voltage U (y-axis) against the state of charge SOC (x-axis) of an energy store 3 of an energy storage arrangement 1 according to an exemplary embodiment of the invention.
  • chen indicates the maximum terminal voltage of energy store 3
  • straight line 10 indicates the minimum terminal voltage of energy store 3 in order to properly supply electrical energy, ie current, to the loads connected in an on-board network 2 with an operating voltage in the range from 13 to 15 volts ,
  • the curve 1 1 represents a voltage curve of an energy storage device 3 consisting of three NMC storage elements 4 connected in series without a capacitor device 5 connected in series with them.
  • the curve represents a voltage characteristic of a z. B. energy storage 3 shown in Fig. 1, d. H. one of three series-connected NMC memory elements 4 and a capacitor device 5 connected in series for this purpose energy storage 3.
  • the memory elements 4 associated with the respective energy stores 3 represented by the curves 1 1 and 12 are in a similar state which is insufficient for the terminal voltage that can be supplied via the latter for use in a corresponding electrical system with an operating voltage in the range from 13 to 15 volts , As can be seen, the curve 1 1 therefore runs below the straight line 10.
  • the presently low performance of the storage elements 4 can take place in the case of the energy store 3 represented by the curve 12 by a control of the capacitor device 5 described with reference to FIG.
  • the currently low performance of the memory elements 4 is described via a corresponding state information, as a function of which the control device 7 performs a control of the capacitor device 5.
  • the state of charge or voltage state of the capacitor device 3 is thus selectively varied or adjusted such that the terminal voltage of the represented by the curve 12 energy storage 3, the embodiment shown in FIG. 2, at least from a charge state of about 10%, above the line 10th lies.
  • the previously not mentioned components of the on-board network 2 are last referred to again with reference to FIG. 1. These include an electric machine 13, which can be operated as a generator or electric motor, and an electrical load 14, in which it is z. B. may be an air conditioner of the motor vehicle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un système d'accumulation d'énergie (1), comprenant un accumulateur d'énergie électrique (3) constitué d'une pluralité d'éléments d'accumulation (4) raccordés électriquement les uns aux autres et d'au moins un dispositif de condensation électrique (5) dont l'état de tension est variable ainsi qu'un dispositif de commande (7), lequel est mis au point pour déterminer au moins une information d'état, laquelle information d'état décrit au moins une grandeur influençant la tension aux bornes de l'accumulateur d'énergie (3), et pour commander l'état de tension du ou des dispositifs de condensation (5) en fonction de l'information d'état.
PCT/EP2014/002137 2013-09-27 2014-08-02 Système d'accumulation d'énergie WO2015043696A1 (fr)

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DE201310016094 DE102013016094A1 (de) 2013-09-27 2013-09-27 Energiespeicheranordnung
DE102013016094.4 2013-09-27

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WO2015043696A1 true WO2015043696A1 (fr) 2015-04-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209378A3 (fr) * 2015-05-06 2017-04-13 The Regents Of The University Of Michigan Dispositif de stockage d'énergie hybride

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206011A1 (de) 2020-05-13 2021-11-18 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Fahrzustandsermittlung eines Fahrzeugs mit einer elektrischen Energiespeichereinheit

Citations (4)

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Publication number Priority date Publication date Assignee Title
US20040222771A1 (en) * 2003-05-09 2004-11-11 Mitsubishi Denki Kabushiki Kaisha Battery power circuit and automobile battery power circuit
EP1882850A1 (fr) * 2005-05-17 2008-01-30 Matsushita Electric Industrial Co., Ltd. Dispositif démarreur de moteur
DE102007026164A1 (de) * 2007-06-04 2008-12-11 Ipgate Ag Elektrisches Versorgungssystem für ein Kraftfahrzeug
WO2012109903A1 (fr) * 2011-02-18 2012-08-23 Goo Weng Chai Gilbert Amplificateur de puissance pour système électrique de véhicule

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Publication number Priority date Publication date Assignee Title
DE102004043129A1 (de) * 2004-09-07 2006-03-09 Robert Bosch Gmbh Vorrichtung zur Spannungsversorgung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040222771A1 (en) * 2003-05-09 2004-11-11 Mitsubishi Denki Kabushiki Kaisha Battery power circuit and automobile battery power circuit
EP1882850A1 (fr) * 2005-05-17 2008-01-30 Matsushita Electric Industrial Co., Ltd. Dispositif démarreur de moteur
DE102007026164A1 (de) * 2007-06-04 2008-12-11 Ipgate Ag Elektrisches Versorgungssystem für ein Kraftfahrzeug
WO2012109903A1 (fr) * 2011-02-18 2012-08-23 Goo Weng Chai Gilbert Amplificateur de puissance pour système électrique de véhicule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209378A3 (fr) * 2015-05-06 2017-04-13 The Regents Of The University Of Michigan Dispositif de stockage d'énergie hybride
US10596909B2 (en) 2015-05-06 2020-03-24 The Regents Of The University Of Michigan Hybrid energy storage

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