WO2004006366A2 - Systeme de piles a combustible, son application et son procede de production - Google Patents

Systeme de piles a combustible, son application et son procede de production Download PDF

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Publication number
WO2004006366A2
WO2004006366A2 PCT/EP2003/005541 EP0305541W WO2004006366A2 WO 2004006366 A2 WO2004006366 A2 WO 2004006366A2 EP 0305541 W EP0305541 W EP 0305541W WO 2004006366 A2 WO2004006366 A2 WO 2004006366A2
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WO
WIPO (PCT)
Prior art keywords
fuel cell
cell system
energy
stop
application device
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.)
Ceased
Application number
PCT/EP2003/005541
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German (de)
English (en)
Other versions
WO2004006366A3 (fr
Inventor
Ulrich Kastrup
Dirk Schröter
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Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of WO2004006366A2 publication Critical patent/WO2004006366A2/fr
Publication of WO2004006366A3 publication Critical patent/WO2004006366A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
    • B60L58/33—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by cooling
    • 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
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
    • B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
    • 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
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
    • 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
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin 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
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the invention relates to a fuel cell system, its application and a method for its operation according to the claims.
  • Fuel line systems and their application in motor vehicles are e.g. B. from DE 199 13 794 AI, WO 98/40922 and WO 99/19161 known.
  • the invention relates to a method for operating a fuel cell system which has at least one fuel cell and a peripheral system of peripheral devices which are essential for operating the fuel cell, electrical energy being obtained from an energy source external to the fuel cell system for starting the fuel cell system , wherein the gross power of the fuel cell system consists of its system-internal energy requirement for the performance of its functions and the power requirement of an application device, which has the energy source, which can be designated as net power requirement, whereby in normal operation the net power requirement is in the range between the values of zero, which means idle operation of the fuel cell system means, and is greater than zero
  • the invention further relates to motor vehicles, ships, power generation systems, air conditioning systems, heating and / or cooling systems, which have an electrical energy source and a fuel cell system which can be operated according to the method according to the invention.
  • the fuel cell system is a supplier of usable electrical energy and / or of usable thermal energy, which is each suitable for a system-external application or application device, for. B. for vehicle drives, ship drives, energy-consuming on-board equipment for vehicles and ships, industrial plants, households, data processing systems and data communication systems.
  • a reverse transfer of electricity and / or heat from the above-mentioned systems, facilities, devices and energy sources to the fuel cell system is also possible.
  • the use of fuel cell systems also includes the operation of peripheral units that are essential for the operation of the fuel cell or at least make it much more effective.
  • the application device can consist of one or more devices, machines or systems.
  • a particular field of application of the invention is motor vehicles which have a fuel cell system.
  • the invention is preferably used in motor vehicles which do not contain an internal combustion engine, but rather only one or more electrical machines which can be operated as an electric motor for driving the motor vehicle and which can alternatively preferably also be used as a generator for generating electricity, for example when the motor vehicle is rolling without energy supply, z. B. downhill or to reduce the driving speed.
  • the object of the invention is to optimize the use of the fuel cell system.
  • This object is achieved according to the invention by a start / stop operation of the fuel cell system or of at least a part thereof depending on the energy requirement of the application or the application device while the application device is in operation.
  • a method and its applications according to the invention are characterized in that the fuel cell system is operated in a start / stop mode as a function of the energy requirement of the application device from start / stop signals of the application device, with a stop signal from the application device Fuel cell system is signaled that the application device has no energy requirement from the fuel cell system, and thereby this stop signal switches the peripheral system of the fuel cell system to a reduced energy requirement of the fuel cell system, which is lower than its energy consumption in idle mode, and whereby a start Signal from the application device to the fuel cell system is signaled when it is necessary to restore normal operation of the fuel cell system, and thereby the normal operation of the fuel cell system by this start signal s is restored.
  • the invention can be used, for example, in motor vehicles, in particular motor vehicle drives, on ships, in particular in ship drives, stationary or mobile energy generation systems, in particular for generating electricity and / or for generating heat.
  • the invention thus also relates to such motor vehicles, ships and systems.
  • FIG. 1 schematically shows an application device with a fuel cell system which can be operated in start / stop mode by an electronic control device according to the invention
  • FIG. 2 shows a diagram of a possible embodiment of the invention as a method and / or as a device
  • Fig. 3 shows schematically a motor vehicle which is designed according to the invention.
  • the device according to the invention shown in FIG. 1 contains a fuel cell system 1 as a supplier of electrical energy 5 and / or as a supplier of thermal energy 6 for an application or application device 2 external to this fuel cell system.
  • the possible energy transmission directions are indicated in FIG. 1 by thermal energy arrows 12 and electrical current energy arrows 14.
  • the application or application device 2 can be a device of any type, which on the one hand requires electrical energy or thermal energy and on the other hand has an energy source 3 for starting the fuel cell system 1.
  • the energy source 3 can be a generator or preferably a rechargeable energy store (battery, capacitor), which can be supplied with energy by the fuel cell system 1 if the fuel cell system 1 can emit electrical energy and / or thermal energy after it has started.
  • the energy source 3 may itself be the application device 2 or, as assumed in the example of FIG. 1, be part of the application device 2. As an example, it is assumed here that the application device 2 is a motor vehicle.
  • the fuel cell system In particular its fuel cell, it requires energy from the energy source 3. With this energy from the energy source 3, the reactions of the fuel cell are set in motion and the fuel cell is brought to operating temperature.
  • the fuel cell system 1 contains a fuel source (not shown) for supplying fuel to the fuel cell.
  • the fuel source can be a gas bottle, which contains the fuel, or a fuel generator, which generates the fuel for the fuel cell from a starting material, for example hydrogen.
  • the fuel cell system 1 contains at least one fuel cell, but preferably one or more stacks, each of which contains a plurality of fuel cells, and an electronic control device (not shown).
  • the application device 2 preferably also contains an electronic control device.
  • the two control devices are functionally connected to one another for data exchange through a data path 8 or to form a control unit.
  • the fuel cell system is operated in a start / stop mode.
  • the application device 2 signals the fuel cell system 1 via the data path 8 by means of a stop signal if the application device 2 has no energy requirement from the fuel cell system 1.
  • This stop signal switches the "peripheral system" of the fuel cell system 1 to a reduced energy requirement of the fuel cell system 1, which is lower than its energy consumption in idle mode.
  • the "peripheral system" of the fuel cell system 1 contains, in addition to the fuel cell (or fuel cell stack), parts required for operating the fuel cell, such as a water pump, a heating device and / or a cooling device for temperature control of the fuel cell of the fuel cell system 1, and a compressor for supplying air Fuel cell, elements for supplying the fuel such as hydrogen, and a fuel source, e.g. B. a gas bottle or a gas generator.
  • a fuel source e.g. B. a gas bottle or a gas generator.
  • the application device 2 If the application device 2 signals the fuel cell system 1 on the data path 8 by means of a start signal that energy is to be made available again, then the fuel cell system 1 is switched back to normal operation by this start signal. This switchover from stop mode to start mode takes place in such a timely manner that the fuel cell system 1 and the application device 2 do not become inoperable due to lack of energy.
  • the start signal and the stop signal can be generated by the application device 2, for example depending on the state of charge of the energy source 3.
  • the start-stop operation takes place while the application device is switched on, e.g. B. the electrical system is switched on in a motor vehicle. As a result, the vehicle remains fully functional even during the stop phase.
  • the peripheral system of the fuel cell system 1, or at least a part thereof is switched off by the stop signal and then switched on again by the start signal.
  • the peripheral system of the fuel cell system 1, or at least a part thereof is not completely, but only to a reduced, limited amount of the stop signal of the application device 2. Energy consumption of the fuel cell system set above zero.
  • the fuel cell system is preferably also during a stop phase depending on at least one operating parameter temporarily switched to normal operation if and as long as there are predetermined deviations from the relevant operating parameter.
  • an operating parameter is, for example, the temperature of the fuel cell and / or a predetermined gas pressure of the fuel for the fuel cell.
  • the operating parameter can be a predetermined value of the application device 2, for example a specific temperature of an air conditioning system or a residual energy value of the energy source 3.
  • the start / stop mode can be switched manually. According to the preferred embodiment, however, it takes place automatically.
  • FIG. 2 shows the ON-switching phase ON and the OFF-switching phase OFF of the application device 2 over a time axis "t" in a lower diagram line 2.1.
  • a diagram line 2.2 which shows the start signals START and stop signals STOP on the Data path 8 represents.
  • the on-on state ON and the off-state OFF of the fuel cell system 1 are shown in a third diagram line 2.3.
  • a fourth diagram line 2.4 above shows that during the start phases 14 after the start signal from the fuel cell system 1, net power is available, which is denoted by "ON”, and during the stop phases 12 after the stop signal the fuel cell system 1 cannot generate net power, which is denoted by "OFF”.
  • a fifth diagram line 2.5 performance curve
  • "ON” and “OFF” and at least one intermediate switch-on phase 16 indicate, as during a stop phase 12 between two successive start phases 14 as a function of one or several operating parameters, the fuel cell system 1 can temporarily be switched on once or several times to normal operation to deliver net power, if this is necessary in order to keep the fuel cell system 1 and / or the application device 2 functional even during a stop phase by providing sufficient energy.
  • a sixth diagram line 2.6 which indicates the start and stop signals of the application device 2 to the fuel cell system 2 for the power according to the fifth diagram curve 2.5.
  • the start and stop signals for the start-stop operation, which result in their phases 12 and 14, are preferably independent of intermediate start and stop signals, which result in their intermediate switch-on phase 16.
  • FIG. 3 schematically shows a motor vehicle 2 as an application device with a fuel cell system 1 and with at least one electrical machine 22, which can draw electrical energy from the fuel cell system 1 to drive the motor vehicle.
  • 3 also shows an energy store 3 as an energy source, for example a battery, and a further device 24 which obtains electricity and / or thermal energy from the fuel cell system 1, for example an air conditioning system, heating, radio and / or navigation system of the motor vehicle 2
  • Electrical machine 22 is preferably either an electric motor or, for. B. driven by vehicle wheels 26, operable as a generator for power generation.
  • the electrical machine 22, the fuel cell system 1, the at least one on-board device 24 and the energy source 3 are functionally connected to one another by an electrical circuit 28.
  • the electrical energy flow is either directly between the fuel cell system 1 and consumers such.
  • the energy source 3 supplies electrical current for starting the fuel cell system 1 and draws electrical current from the fuel cell system 1 after the starting process.
  • the driver can switch the motor vehicle into a ready-to-drive state or into a parked state.
  • the fuel cell system 1 can be operated in the start / stop mode.
  • the circuit 28 contains a circuit part 32 for generating the start and stop signals for the start-stop operation of the fuel cell system 1.
  • the invention is not restricted to motor vehicles which temporarily do not require any energy from the fuel cell system 1 when the on-board electrical system is switched on, but can also be used for other application devices which temporarily require no energy from the fuel cell system 1 and can therefore control the fuel cell system as required.
  • Such applications are, for example, ships and plants for generating electricity and / or heat, e.g. B. in vehicles, on ships, or for residential buildings and / or for factories.
  • the electrical machine 22 may be a marine propulsion engine.
  • the start / stop operation takes place automatically as a function of the higher-level application device 2. This is not a switch-off process for the higher-level application device 2.
  • the start / stop function in motor vehicles can occur, for example, during long descents or when the vehicle is stationary before a traffic light Stop mode can be switched, and / or for heating systems and air conditioning systems when a predetermined temperature is reached, and / or for the e- electrical energy source 3 are switched to stop operation when a predetermined charge state is reached. After these conditions no longer exist, the system automatically switches back to start mode.
  • the net power which the application device 2 takes from the fuel cell of the fuel cell system 1 is greater than or equal to the value zero.
  • the value zero means system idle of the fuel cell system 1, the system being able to deliver net power to the application or the application device 2 immediately if required.
  • the energy requirement of the application device 2 is referred to here as the net power, the energy source 3 being considered here as part of the application device 2.
  • the gross power of the fuel cell which is the combination of the system-internal energy requirement of the fuel cell plus the net power requirement of the application device 2.
  • the application device 2 signals the fuel cell system 1 by means of a start signal on the signal path 8 (electrical, optical, mechanical or magnetic) that there is "energy requirement". Regardless of this, the functionality of the application device 2 may still be available, e.g. B. Driving the motor vehicle by taking energy from the energy store 3. A purely electrical drive of the motor vehicle by one or more electrical machines 22 is thus possible.
  • the fuel flow of the fuel cell system is limited to a minimum (ideally zero).
  • the operational readiness of the fuel cell system 1 is restored by means of the start signal on the signal path 8.
  • the peripheral system parts of the fuel cell system are then operated again in such a way that the fuel cell system 1 is idle and can deliver net power to the application device 2.
  • the start / stop operation of the fuel cell system 1 enables an optimization of the liquid balance of this fuel cell system, since in the stop state there are no or only minimal material conversions of the reaction gases of the fuel cell system.
  • the invention can either be carried out in such a way that a control device of the fuel cell system 1 communicates with the application device 2 during the entire stop phase, or in such a way that the control of the fuel cell system 1 must be “awakened” by the application device in each case.
  • An example of this is shown in the signal configuration in FIG. 2.
  • a stop / start ie the start of a start phase after a stop phase of the start / stop operation of the fuel cell system.
  • tems 1 is possible in an analogous manner to the stop process, depending on the reference criterion for the start of the process.
  • the reference criterion for triggering a start signal by the application device 2 can be, for example, a drop in the charging capacity of the energy source 3 or a deviation from an operating parameter of the fuel cell system 1, for example the deviation of the temperature of the fuel cell from a predetermined operating parameter.
  • the invention has the following advantages in particular: Optimization of the energy consumption of the fuel cell system 1 by the start / stop operation.
  • System components e.g. fuel cell or fuel cell stack, fuel source in the form of a bottle or a tank or a gas generator, media conveying means such as feed pumps, control devices and monitoring devices
  • fuel cell system 1 can be switched off, on stand-by or in operation while a parent application or application device 2 is in operation.
  • the operating media for example fuel and oxygen
  • the temperature of the fuel cell system is in a predetermined operating range, which enables the fuel cell to start quickly Fuel cell system enables is held. In this way, idle operation is avoided, in which, for example, the liquid balance of the fuel cell system and defined flow conditions of the operating media are difficult to adjust.
  • the operating media can be switched off, for example, by valves and / or by switching off the conveying devices for the operating media.
  • the invention achieves easy controllable and energy-saving operation of the fuel cell system.

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  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un système de piles à combustible et son procédé de fonctionnement, d'un dispositif d'application (2), notamment d'un véhicule automobile. Le système de piles à combustible (1) peut fonctionner en mode « stop-démarrage » en fonction de la consommation d'énergie au moins d'un équipement (3) du dispositif d'application (2) pendant que cet équipement est en marche.
PCT/EP2003/005541 2002-07-09 2003-05-27 Systeme de piles a combustible, son application et son procede de production Ceased WO2004006366A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230783A DE10230783A1 (de) 2002-07-09 2002-07-09 Brennstoffzellensystem, seine Anwendung und Verfahren zu seinem Betrieb
DE10230783.0 2002-07-09

Publications (2)

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WO2004006366A2 true WO2004006366A2 (fr) 2004-01-15
WO2004006366A3 WO2004006366A3 (fr) 2004-09-16

Family

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PCT/EP2003/005541 Ceased WO2004006366A2 (fr) 2002-07-09 2003-05-27 Systeme de piles a combustible, son application et son procede de production

Country Status (2)

Country Link
DE (1) DE10230783A1 (fr)
WO (1) WO2004006366A2 (fr)

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US8420272B2 (en) 2004-03-17 2013-04-16 Toyota Jidosha Kabushiki Kaisha Fuel cell system control device
US20140087285A1 (en) * 2011-05-18 2014-03-27 Nissan Motor Co., Ltd. Fuel cell system

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US20080176117A1 (en) * 2005-03-29 2008-07-24 Nissan Motor Co., Ltd. Fuel Cell System and Fuel Cell System Control Method
DE102006045676A1 (de) * 2006-09-27 2008-04-03 Enerday Gmbh Klimaanlage für ein Kraftfahrzeug
DE102007002413A1 (de) * 2007-01-17 2008-07-24 Enerday Gmbh Verfahren zum Steuern einer Klimaanlage
DE102009001630A1 (de) 2009-03-18 2010-09-23 Volkswagen Ag Verfahren zum Betrieb eines Brennstoffzellensystems mit Standby-Funktion sowie Brennstoffzellensystem mit Standby-Funktion

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FI110218B (fi) * 1993-12-30 2002-12-13 Fortum Oil & Gas Oy Menetelmiä ja laitteisto sähkökemiallisten laitteiden jäähtymisen estämiseksi
JP4049833B2 (ja) * 1996-07-26 2008-02-20 トヨタ自動車株式会社 電源装置および電気自動車
JP3849749B2 (ja) * 2000-03-01 2006-11-22 日産自動車株式会社 燃料電池システム
US20010052433A1 (en) * 2000-04-14 2001-12-20 Harris Donald B. Hybrid power supply module
JP3842015B2 (ja) * 2000-06-12 2006-11-08 本田技研工業株式会社 燃料電池車両のアイドル制御装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8420272B2 (en) 2004-03-17 2013-04-16 Toyota Jidosha Kabushiki Kaisha Fuel cell system control device
US20140087285A1 (en) * 2011-05-18 2014-03-27 Nissan Motor Co., Ltd. Fuel cell system
US9640812B2 (en) * 2011-05-18 2017-05-02 Nissan Motor Co., Ltd. Fuel cell system including controller to prevent over-discharge of battery and lowering in drivability upon recovering from idle stop

Also Published As

Publication number Publication date
DE10230783A1 (de) 2004-01-29
WO2004006366A3 (fr) 2004-09-16

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