WO2019034446A1 - Procédé de déconnexion d'un système de piles à combustible - Google Patents

Procédé de déconnexion d'un système de piles à combustible Download PDF

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Publication number
WO2019034446A1
WO2019034446A1 PCT/EP2018/071032 EP2018071032W WO2019034446A1 WO 2019034446 A1 WO2019034446 A1 WO 2019034446A1 EP 2018071032 W EP2018071032 W EP 2018071032W WO 2019034446 A1 WO2019034446 A1 WO 2019034446A1
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WO
WIPO (PCT)
Prior art keywords
fuel cell
vehicle
cell system
monitoring unit
motor vehicle
Prior art date
Application number
PCT/EP2018/071032
Other languages
German (de)
English (en)
Inventor
Helerson Kemmer
Frank Heber
Stefan Schoenbauer
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019034446A1 publication Critical patent/WO2019034446A1/fr

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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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
    • 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
    • H01M8/04223—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
    • H01M8/04253—Means for solving freezing problems
    • 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
    • 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
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H01M8/04365—Temperature; Ambient temperature of other components of a fuel cell or fuel cell stacks
    • 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
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • 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
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04492—Humidity; Ambient humidity; Water content
    • 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
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04828—Humidity; Water content
    • H01M8/04843—Humidity; Water content of fuel cell exhausts
    • 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
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04955—Shut-off or shut-down 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • 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
    • B60L2240/62—Vehicle position
    • B60L2240/622—Vehicle position by satellite navigation
    • 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
    • B60L2240/70—Interactions with external data bases, e.g. traffic centres
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/56—Temperature prediction, e.g. for pre-cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/20—Energy converters
    • B60Y2400/202—Fuel cells
    • 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
    • Y02T10/72—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
    • 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 method for parking a fuel cell system of a motor vehicle according to the preamble of the independent
  • the invention relates to a system with a fuel cell system and a vehicle-external monitoring unit according to the preamble of the independent system claim.
  • product water is produced on a cathode side of a fuel cell system. So that the product water at
  • At least one cathode line is blown dry when the fuel cell system is switched off.
  • an air blower or an air compressor for a few seconds, for example. 20 to 30 s, operated at full power.
  • a fuel cell system is a
  • Drying process depending on at least one operating parameter of the fuel cell, such. B. the stack temperature at the moment of shutdown of the system initiated.
  • the present invention provides a method for switching off a fuel cell system of a motor vehicle according to the main claim and a system with a fuel cell system and a vehicle-external monitoring unit according to the independent device claim.
  • the invention provides a method for parking a fuel cell system of a motor vehicle, comprising the following steps:
  • Fuel cell system in the motor vehicle when the specific operating parameter is outside the permissible value range.
  • steps I) and II) of the method according to the invention the operation of the fuel cell system is terminated.
  • a shut-off valve can be closed, which prevents the supply of hydrogen from a hydrogen reservoir.
  • the steps I) and II) of the process according to the invention can be carried out either sequentially or simultaneously.
  • step a) for example, a geo-coordinate of the motor vehicle, for example by a navigation unit of the motor vehicle, to the vehicle external
  • Monitoring unit to be transmitted which uses no vehicle-side energy and, for example, by an external data service and / or an external data storage (a so-called. Cloud function) is realized.
  • Fuel cell system is turned off.
  • the transmission of the data is wireless, z. B. via a GSM interface.
  • step b) can be at least one temperature, pressure or relative humidity within and / or outside of the fuel cell system, preferably by the vehicle external as operating parameters of the fuel cell system
  • step b) at least one current operating parameter of the fuel cell system, preferably by the vehicle-external monitoring unit, can be selectively and / or continuously determined or monitored and / or prognosticated.
  • local weather data and / or environmental conditions can be taken into account, which can preferably be called up online, in particular via the Internet, by the vehicle-external monitoring unit.
  • step c) at least one, preferably several, permissible value ranges of the operating parameter can be taken into account.
  • step d) can, for example, a vehicle-side
  • Control unit awakened by the vehicle external monitoring unit (preferably wirelessly) to initiate at least one drying process of the fuel cell system. Thereafter, the control unit can be turned off again, so that this requires no further energy. Thus, total energy can be saved on the vehicle by the present method , whereby the service life of a vehicle-side energy storage without charging can be improved.
  • An essential idea of the invention lies in the fact that when the fuel cell system is switched off, a drying process is only initiated and / or only when at least one operating parameter of the
  • Fuel cell system is outside a permissible range, will lie and / or is expected to lie. This can be the case either directly when switching off the fuel cell system and / or after some time, for example at night, regardless of whether the fuel cell is dry (for further drying operations) or wet (for a first and possibly further Drying operations) was turned off. In this case, the drying process according to the invention can be initiated even if the fuel cell is dry (for further drying operations) or wet (for a first and possibly further Drying operations) was turned off. In this case, the drying process according to the invention can be initiated even if the
  • Fuel cell system has been turned off for a long time and a vehicle-mounted control unit has been turned off.
  • a vehicle-mounted control unit has been turned off.
  • Fuel cell system has been turned off for a long time and a vehicle-mounted control unit has been turned off.
  • Drying process only be necessary if the ambient temperature of the fuel cell system falls below 5 ° C. At higher temperatures, the product water may also evaporate without an energy-intensive drying process.
  • Fuel cell system could be useful.
  • the operating parameters of the fuel cell system according to the invention is determined on the basis of the (geo) coordinate of the motor vehicle and
  • the (geo) coordinate of the motor vehicle can provide information about what the local weather is and / or will be at the location where the motor vehicle was parked.
  • the (geo-) Coordinate of the motor vehicle can also provide information about where exactly the car was parked, indoors in a garage or outside on the open air. In the context of the invention, it is conceivable that in winter when the motor vehicle is parked in a garage, the temperature of the fuel cell system does not drop as low as outside.
  • the (geo) coordinate of the motor vehicle weather data can be determined and / or measured, which in turn can provide information about how at least one operating parameter of the fuel cell system is currently and / or how it will evolve over time.
  • the weather data can, for example, be obtained from a weather service and / or measured by a special monitoring system, for example from several weather stations and corresponding sensors.
  • the retrieval of weather data can advantageously take over the vehicle-external monitoring unit, so that the vehicle-mounted control unit after the
  • the vehicle-external monitoring unit can be realized, for example, by means of an external data memory and / or an external data service.
  • the determination and / or calculation of the operating parameter takes place directly when the fuel cell system is switched off and continuously, for example, selectively or continuously, preferably by the vehicle external
  • Drying operations may be advantageous in certain time and / or
  • Temperature intervals can be performed, for example, to dry condensation within the fuel cell system.
  • a method in the sense of the invention can provide that in step a) a GPS position (meaning a defined geographical position position) of the motor vehicle is transmitted to the vehicle-external monitoring unit.
  • a GPS position meaning a defined geographical position position
  • the vehicle-external monitoring unit By means of the GPS position of the motor vehicle, a precise position of the motor vehicle and its surroundings can be determined.
  • Transmit monitoring unit may be a GPS function to transmit the position of the motor vehicle to the vehicle-external monitoring unit.
  • APP computer program
  • Smartphone can be visualized.
  • a method according to the invention can provide that steps b) and c) are carried out with the aid of an off-vehicle data service and / or a vehicle-external data memory.
  • Memory and / or computing power to perform the method are outsourced in an advantageous manner, so that the motor vehicle side no energy is consumed.
  • a vehicle-mounted control unit can rest during the entire parking phase. Only with a recognized and / or
  • the vehicle-mounted control unit for initiating the
  • Drying process of the fuel cell system are awakened. After that, the control unit can be switched off again. It is conceivable that a manufacturer and / or distributor of the motor vehicle or
  • Fuel cell system and / or a workshop chain can provide the external data service and / or the external data storage.
  • the customer friendliness can be increased.
  • a method in the sense of the invention can provide that in step b) the vehicle external monitoring unit the current weather data and / or environmental conditions as a function of the coordinate of the motor vehicle taken into account, in particular via the Internet or online retrieves.
  • the weather data can even without a direct measurement in or on
  • Motor vehicle help to calculate based on the environmental parameters at least one operating parameter of the fuel cell system and / or to predict.
  • the current weather data can be external to the vehicle
  • Ambient conditions can retrieve the vehicle-external monitoring unit from a navigation and / or map service.
  • the vehicle-external monitoring unit can receive different information that can influence at least one operating parameter of the fuel cell system. As a result, it can be reliably detected whether and / or when
  • Fuel cell system are created, whether a drying process in a certain time, if necessary several times, for example. With a timer to be initiated. Possibly. In this case, a planned parking duration can be taken into account.
  • a method according to the invention can provide that in step c) the vehicle-external monitoring unit initiates a development of the
  • Operating parameters of the fuel cell system with time predicted, in particular calculated to provide at least one timer for the step d).
  • time predicted, in particular calculated to provide at least one timer for the step d).
  • the drying process will be initiated later, for example at night, when it can be expected that the temperatures will drop.
  • the computing capacity can be saved in the vehicle-external monitoring unit.
  • a planned parking duration can be taken into account.
  • the planned parking duration can be read from the environmental data, such as: As public parking or restricted parking, or actively entered by the user, for example.
  • the planned parking duration can be read from the environmental data, such as: As public parking or restricted parking, or actively entered by the user, for example.
  • the environmental data such as: As public parking or restricted parking, or actively entered by the user, for example.
  • Communication device within the motor vehicle or in a smartphone, which can be connected to the external monitoring unit.
  • the invention may provide in a method that in step c) different ranges of values are checked to initiate several drying operations.
  • step c different ranges of values are checked to initiate several drying operations.
  • z. B. at an ambient temperature of 5 ° C (with prognosis for further reduction), the first drying process to be initiated, a second at 3 ° C and a third at 1 ° C.
  • step d) a motor vehicle-side control unit is awakened to initiate a drying process of the fuel cell system.
  • the control unit can be woken in the shutdown phase only if a drying process is necessary. This can not only save energy for a possibly unnecessary
  • Drying process are saved at each shutdown of the fuel cell system, but also to wake up the control unit in the issued drive.
  • the invention can provide that the method has at least one further step:
  • Fuel cell system or
  • the step e) is advantageous because the product water is formed on the cathode side of the fuel cell system. This can be a duration for the
  • Drying process can be set to make sure that
  • Residual water from the anode is re-diffused into the cathode.
  • the step f) is advantageous because it allows the residual water from the anode to be directly blown out without waiting for the water to diffuse to the cathode side and be blown out there. As a result, a faster implementation of the drying process can be made possible. In addition, thus, the required Energy for blowing out the fuel cell system can be reduced.
  • drying process can be improved by steps e) and f) and the risk of water residues remaining in the fuel cell system being avoided.
  • the invention provides a system with a fuel cell system and a vehicle-external monitoring unit, wherein the
  • vehicle-external monitoring unit is designed to carry out a method as described above.
  • the vehicle-external monitoring unit can thereby use an off-board data service and / or a
  • vehicle-external data storage be realized.
  • the same advantages are achieved as have been described above in connection with the method according to the invention, to which reference is made in full in the present case.
  • Fig. 1 shows a schematic sequence of a method according to the invention
  • FIG. 2 is a schematic representation of a system according to the invention with a fuel cell system and a vehicle-external monitoring unit.
  • FIG. 1 shows a sequence of a method according to the invention using an algorithm. The method is used to turn off a
  • Fuel cell system 100 of a motor vehicle which is shown in Figure 2, wherein the method comprises the following steps: a) transmission of at least one coordinate K of the motor vehicle, for example GPS position, to an external vehicle monitoring unit 110, which is shown by way of example in FIG.
  • step a) for example, a GPS coordinate K of the motor vehicle, for example by a navigation unit 104 of the motor vehicle, can be transmitted to the vehicle-external monitoring unit 110, the energy from the
  • step a) it may be provided in step a) that a vehicle-side
  • Control unit 105 of the fuel cell system 100 is turned off. in the
  • the motor vehicle-side control unit 105 can only be awakened in step d) to perform a drying process of the
  • Fuel cell system 100 initiate.
  • step b) as operating parameter T, P, F of the fuel cell system 100, at least one temperature T, a pressure P or a relative humidity F inside and / or outside of the fuel cell system 100, preferably by the vehicle external monitoring unit 110, are determined.
  • step b) at least one current operating parameter T, P, F of the fuel cell system 100 can be selectively and / or continuously determined and / or prognosticated by the vehicle-external monitoring unit 110.
  • local weather data W (K) and / or environmental conditions G (K) as a function of the vehicle position K can be taken into account.
  • step c) at least one permissible value range T1-T2, P1-P2, F1-F2 of the at least one operating parameter T, P, F can be taken into account in order to determine whether a drying process is necessary.
  • step d) the vehicle-side control unit 105 by the
  • Vehicle external monitoring unit 110 are awakened to initiate at least one drying operation of the fuel cell system 100. Thereafter, the control unit 105 can be turned off again.
  • a drying process is only initiated and / or only when at least one operating parameter T, P, F of the fuel cell system 100 is outside a permissible value range T1-T2, P1-P2, F1-F2. will be and / or is expected to be. This can be the case either directly when switching off the fuel cell system 100 and / or after some time, for example at night. In this case, the inventive
  • Drying process can be initiated even if that
  • Fuel cell system 100 already turned off for hours and a
  • Vehicle-side control unit 105 has been turned off.
  • the invention thus differentiates between the cases when the remaining product water can evaporate independently and when a drying process is actually required.
  • Temperature T, pressure P and / or humidity F of the environment may affect the operating parameters T, P, F within the fuel cell system 100.
  • the invention recognizes that the environmental parameters T, P, F of Depending on the location where the motor vehicle has been turned off, thus a separate measurement of the environmental parameters T, P, F and / or the
  • the (geo) coordinate K of the motor vehicle and thus of the fuel cell system 100 can be transmitted to the external monitoring unit 110, for example by the navigation unit 104 of the motor vehicle.
  • the external monitoring unit 110 uses the (geo) coordinate K of the motor vehicle to determine and / or measure current weather data W (K) and / or its course and environmental data G (K), which in turn can provide information on how the at least one operating parameter T, P, F of the fuel cell system 100 is present and / or how it will evolve over time t.
  • a planned parking duration can be taken into account.
  • the weather data can, for example, be obtained from a weather service, for example via the Internet 120, and / or measured by a special monitoring system, for example from several weather stations.
  • the retrieval of the weather data takes over the vehicle-external monitoring unit 110, so that the vehicle-mounted control unit 105 after stopping the
  • Fuel cell system 100 can remain off.
  • Monitoring unit 110 in step c) predict a development of the operating parameter T, P, F of the fuel cell system 100 with the time t, for example, estimate and / or calculate to provide at least one timer At for the step d).
  • the method can have at least one further step: e) blowing out moisture from a cathode 101 of the
  • Fuel cell system 100 or
  • Fuel cell system 100 Fuel cell system 100.
  • step e) therefore, the product water on the cathode side of the
  • Fuel cell system 100 are blown out.
  • a duration for the drying process can be set to ensure that the
  • Residual water from the anode 102 is reindiffundiert in the cathode 101.
  • step f) moreover, the residual water from the anode 102 can be actively blown out, which can diffuse into the cathode 101 after switching off the fuel cell system 100.
  • the drying process can be improved and accelerated and the risk can be avoided
  • Fuel Cell System 100 Remains of water remain.
  • step c) different value ranges Ti-Ti + 1 can be checked in order to initiate a plurality of drying operations.
  • z. B. at an ambient temperature of 5 ° C (with prognosis for further reduction), the first drying process to be initiated, a second at 3 ° C and a third at 1 ° C. So the condensed water can be better discharged.
  • FIG. 2 shows a system according to the invention with a
  • a cathode 101, a membrane 103 and an anode 102 are included.
  • Navigation unit 104 and a control unit 105 have. Furthermore, it is conceivable that a user can integrate in the system via a mobile telephone 106 in order, for example, to carry out at least one step of the method and / or to visualize several process steps.
  • a mobile telephone 106 On the side of the monitoring unit 110, which can be realized with the aid of an off-vehicle data service 111 and / or a vehicle-external data memory 112, at least one connection to the Internet 120 can also be provided.

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

Abstract

L'invention concerne une méthode de stationnement d'un système de piles à combustible (100) d'un véhicule automobile, comprenant les étapes suivantes : a) transmission d'au moins une coordonnée (K) du véhicule automobile à une unité de surveillance externe (110), b) détermination d'un paramètre de fonctionnement (T, P, F) du système de pile à combustible (100) par l'unité de surveillance externe (110) en utilisant la coordonnée (K) du véhicule automobile, c) vérification par l'unité de surveillance externe (110), si le paramètre de fonctionnement spécifique (T, P, F) se trouve dans une plage de valeurs admissibles (T1-T2, P1-P2, F1-F2), d) déclenchement d'au moins un processus de séchage du système de piles à combustible (100) dans le véhicule automobile si le paramètre de fonctionnement spécifique (T, P, W) se situe en dehors de la plage de valeurs admissibles (T1-T2, P1-P2, F1-F2).
PCT/EP2018/071032 2017-08-18 2018-08-02 Procédé de déconnexion d'un système de piles à combustible WO2019034446A1 (fr)

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Application Number Priority Date Filing Date Title
DE102017214391.6 2017-08-18
DE102017214391.6A DE102017214391A1 (de) 2017-08-18 2017-08-18 Verfahren zum Abstellen eines Brennstoffzellensystems

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070298289A1 (en) * 2006-06-27 2007-12-27 Clingerman Bruce J Fuel cell system water management strategy for freeze capability
US20110003215A1 (en) * 2006-11-06 2011-01-06 Hiroaki Tanaka Fuel cell system
US20150099200A1 (en) * 2013-10-07 2015-04-09 Ford Global Technologies, Llc Freeze preparation for a fuel cell system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070298289A1 (en) * 2006-06-27 2007-12-27 Clingerman Bruce J Fuel cell system water management strategy for freeze capability
US20110003215A1 (en) * 2006-11-06 2011-01-06 Hiroaki Tanaka Fuel cell system
US20150099200A1 (en) * 2013-10-07 2015-04-09 Ford Global Technologies, Llc Freeze preparation for a fuel cell system

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