WO2021004714A1 - Système de réservoir d'eau pour la fourniture d'eau pour un véhicule à piles à combustible - Google Patents

Système de réservoir d'eau pour la fourniture d'eau pour un véhicule à piles à combustible Download PDF

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Publication number
WO2021004714A1
WO2021004714A1 PCT/EP2020/065812 EP2020065812W WO2021004714A1 WO 2021004714 A1 WO2021004714 A1 WO 2021004714A1 EP 2020065812 W EP2020065812 W EP 2020065812W WO 2021004714 A1 WO2021004714 A1 WO 2021004714A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
water tank
tank system
separator
pump
Prior art date
Application number
PCT/EP2020/065812
Other languages
German (de)
English (en)
Inventor
Michael Giuseppe MARINO
Jochen Braun
Ralph Leonard FUNG
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
Priority to EP20731460.0A priority Critical patent/EP3994754A1/fr
Priority to JP2021576784A priority patent/JP7350900B2/ja
Priority to CN202080063233.XA priority patent/CN114365314A/zh
Publication of WO2021004714A1 publication Critical patent/WO2021004714A1/fr

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Classifications

    • 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
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H01M8/04164—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by condensers, gas-liquid separators or filters
    • 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
    • H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
    • 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
    • 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

  • Water tank system for providing water for a vehicle operated with fuel cells
  • the invention relates to a water tank system for providing water for a vehicle operated with fuel cells, a vehicle having such a water tank system, and a method for providing water through such a water tank system.
  • an electrolyte separates the electrons from the hydrogen atoms at the anode.
  • the electrons are led to the cathode through a conductor, while the hydrogen ions are conducted through the
  • Electrolytes migrate to the cathode side, where they combine with the electrons and oxygen atoms to form water molecules. Different electrolytes, which can consist of liquid or solid substances, can be used here. Heat is released during the process.
  • the operating temperature is determined by the electrolyte used. For example, it is 80 ° for AFC potassium hydroxide solution, between 70 and 90 ° for PEMFC polymer film, and between 80 and 130 ° for a solid membrane DMFC.
  • the water or steam produced during the process is highly pure and is usually released into the open without any further use.
  • a water tank system for a fuel cell powered vehicle has a water separator, for example a cyclone or cyclone separator, and open a water tank.
  • the water separator is set up to separate water from water vapor and has a feed line for receiving
  • the water tank is set up to store the water from the water separator and, for this purpose, has a filling opening which is connected to the discharge line of the water separator and a filling opening for filling the tank with the separated water
  • Extraction device for extracting the water from the water tank.
  • the supply and discharge lines for the steam and water exist
  • a water separator can consist of a metal grid, for example, on which the water contained in the water vapor condenses due to its heat dissipation ability.
  • a water separator is an arrangement by which water condenses.
  • One form of such an arrangement is, for example, a cyclone. Under a cyclone or cyclone separator there is thus a
  • Understood water separator which consists essentially of a container that is shaped, for example funnel-shaped, conical or cylindrical, that air flowing in from the side along the outer wall rotates spirally downwards, for example, and is then discharged upwards within the spiral. If the outer wall is cooled, the water of the water vapor can condense over a large area on the surface of the inner wall, which is thus also cooled, and can be collected or discharged below.
  • a grid for droplet formation and condensation of water vapor can also be attached to the inner wall of the cyclone.
  • the extraction device can be active components and / or passive
  • the water tank only has an overflow pipe.
  • active components such as a pump are required, as described below.
  • the water contained in the water vapor is not released directly into the environment, but is first collected in a water tank, and is thus available for use for various purposes
  • an emergency cooling reservoir can be provided, which can be used if a component in the vehicle is threatened with overheating. But also in general, excess water can be used
  • Evaporative cooling can be used for components to be cooled by applying the water to the components in a metered manner.
  • Another application is the humidification of indoor air or
  • Air conditioning of the vehicle This is achieved, for example, by atomizing water taken from the tank and adding it to the air flow of the air conditioning system.
  • the water can also be used for electrolysis. Due to the purity of the water, it is particularly suitable for electrolysis through coupling with an electrolyzer. This can, for example, after the
  • the water Since the water is extremely pure, it can also be used as drinking water.
  • the water can also optionally be mineralized and made available to the vehicle occupants via suitable lines on a tap, such as a tap or a machine for hot or cold drinks.
  • a tap such as a tap or a machine for hot or cold drinks.
  • it can also be used as service water. Especially with larger ones
  • the water can be used for flushing toilets or a shower in passenger transport vehicles such as buses or campers.
  • Another application is the use of the water for a windshield wiper, e.g. the windscreen, the light, etc. This increases the maintenance intervals for these systems. Excess water can be specifically drained off.
  • the water separator including the supply line is at least partially integrated into the water tank. Although this reduces the usable space of the tank, it also advantageously reduces the space space required to install the water tank system in the vehicle is reduced. Only the water separator can also be partially integrated into the water tank, and the supply line is attached outside the water tank, but this reduces the space-saving effect.
  • the integration or partial integration in connection with a flexible shape of the water tank enables flexible installation according to the various spatial conditions
  • the water separator is connected to a condenser which is set up to absorb any residual water vapor emerging from the water separator and to condense the water contained therein and to release the condensed water.
  • Cooling fins can be attached to the condenser so that it can pass through their
  • a condenser proposed here thus has the function of a water separator and a heat exchanger.
  • the water separated by the water separator and collected in the water tank and / or the condensed water from the condenser is fed to an actuator for provision for use, such as one of the applications described above.
  • the condensed water from the condenser can be made available directly to an application, for example a cooling application, but it can also be fed into the water tank and collected there.
  • the water tank system furthermore has an equipment carrier on which the actuator is mounted.
  • the equipment carrier also has at least one sensor and a pump for conveying the water from the water tank into a pressure line.
  • the water tank as well as the built-in components and the equipment rack are resistant to ice pressure, so that damage due to possible freezing of water is excluded.
  • a heater can be attached to the equipment rack in order to prevent or reverse ice formation at low temperatures.
  • the at least one sensor can, for example, be a fill level sensor for measuring the water level
  • Temperature sensor for recording the water temperature or a pressure sensor be part of a measurement and control system for pumping water into a pressure pipe.
  • the equipment carrier is welded or tightly welded into the water tank, i.e. into the tank bladder, for example by plastic welding. This allows the water tank with the equipment rack to be produced as a module. This allows a flexible - the respective
  • the lines can be made of flexible plastic. This enables a compact and space-saving structure with simple assembly.
  • the extraction device has a pump return arrangement which is set up to provide a return of the pump into the water tank or back to the pump. Different feed pumps for water can be used.
  • Water pumping can be equipped with an overflow valve, a pressure valve or a pressure relief valve.
  • a pump with a regulated overflow bypass for example a pump with a regulated overflow bypass, a pump with a throttle as an overflow bypass or a pump with a throttle as an overflow bypass with a return to the water tank.
  • a variant with a controlled overflow bypass valve is also possible, with the return flow being fed directly into the tank.
  • the pressure line for providing the water to different consumers can have branches.
  • the lines of the branches can have different pressures and temperatures.
  • a heater can be integrated into one or more of the branches.
  • the heaters can be controlled the same or differently, so that an individual temperature is available depending on the application or consumer.
  • the supply of the water from the branches to the consumers can be done via metering devices, e.g.
  • a water tank system is provided for a different, flexible and needs-based use of the same medium water, which enables a responsible use of water, in particular also for use in regions with a lack of water.
  • Product water release to the environment is reduced. For example, freezing puddles at red lights are avoided in winter.
  • the separated water can be used for any purpose.
  • the integrated and closed system enables advantageous use of resources in humidity and temperature management. With regard to the cost-effectiveness in production, a standardized device carrier can result in high
  • the flexible tank bladder allows flexible integration into different vehicles and installation spaces.
  • the water tank system has a control device for acquiring sensor data from a sensor or several sensors and for controlling the one or more actuators based on the sensor data in the water tank system.
  • the sensor data are, for example, temperature data of the water in the water tank, in the pipes or any components in the vehicle that need to be cooled, on the basis of which pumps, valves or heating can be controlled. By including the fill level, overflow or idling can be prevented or, for example, switching on a pump if there is no water available.
  • the control device has logic circuits, for example in logic components such as FPGA, CPLD, processors, microprocessors, ASICs, or simple logic modules, as well as analog and digital control circuits, interfaces to sensors and actuators.
  • the control device can also have analog-to-digital and / or digital-to-analog converters, as well as integrated or external ones
  • Memory cells in which sensor data, characteristic values and program elements can be stored.
  • a program element which, when it is on a control device, has one of the above-described
  • the program element thus contains the logic for evaluating the
  • the program element can also have a user interface in order, for example, to react to an actuation of a digital or analog button in order, for example, to provide water with a specific temperature and quantity through the water tank system.
  • a computer-readable medium such as, for example, the integrated or external memory cells mentioned above, is provided on which the program element is stored.
  • a vehicle which has a water tank system as described above.
  • a method for providing water through a water tank system for a vehicle operated with fuel cells is proposed.
  • the procedure consists of the following steps:
  • Fuel cells via a feed line to a water separator, e.g. a cyclone, to generate condensed water;
  • a water separator e.g. a cyclone
  • the method can take further steps as described in the
  • the remaining water vapor after being fed to the water separator can be used for another
  • Water separator for example a condenser
  • the conveying of the condensation water from the Water tank can be accomplished in particular by a pump, the pump having the properties described above, such as a
  • the water can also be in
  • FIG. 1 shows a block diagram of a water tank system according to a first
  • FIG. 2 shows a block diagram of a water tank system according to a second exemplary embodiment
  • FIG. 3 shows a block diagram of a water tank system according to a third embodiment
  • FIG. 4 shows a flow diagram of a method for providing water by a water tank system according to an embodiment
  • FIG. 5 shows a block diagram of a vehicle with a water tank system according to an embodiment.
  • the cyclone 104 has a feed line 106 which transports the water vapor that is generated in the fuel cell to the cyclone 104.
  • the water vapor rotates in the cyclone 104 in a spiral.
  • the water of the water vapor which drips or flows into the water tank 102 via the filling opening 110, condenses on its inner wall, which is cooled by fresh outside air which surrounds the cyclone.
  • the water can be withdrawn from the water tank via the discharge line 112, the water either being active via the
  • Removal device 108 for example by a pump, can be removed or through a valve that protects the water tank from overflow.
  • the over The air flow entering the cyclone 100 via the supply line 106 is diverted via the line 114.
  • the water vapor can also come indirectly from the fuel cells or the fuel cell stack.
  • the compressed air that is supplied to the fuel cells for reaction with hydrogen can be humidified by a humidifier.
  • Fuel cells are used, which is first fed to the humidifier and from there to the cyclone.
  • FIG. 2 shows a further exemplary embodiment of the water tank system 100, in which the cyclone 104 is partially integrated into the water tank 102.
  • the feed line 106 to the cyclone 104 is also integrated into the water tank 102. This reduces the space required for assembling the water tank system 100, but at the expense of the water tank volume.
  • FIG. 3 shows a third exemplary embodiment of a water tank system 100 which, in addition to the water tank 102 and the cyclone 104, also has a condenser 302 and an equipment carrier 310 and a control device 320.
  • the air flow from the cyclone 104 which is discharged via the line 114, flows into the condenser, which contains cooling grids on which the water of the water vapor remaining after flowing through the cyclone 104 is condensed and discharged downwards via the line 306.
  • the airflow in that
  • the condenser 302 is finally released via the line 304 to e.g. the environment as exhaust air.
  • the cyclone 104 further has cooling fins 308, so that the wall of the cyclone is effectively cooled and favorable conditions for the condensation of the water on the inner wall of the cyclone are created.
  • the condensed water arrives at the filling port 316
  • FIG. 3 shows a venting device 312 through which the air can escape via the line 318 when the tank is being filled.
  • Ventilation device 312 is preferably protected against ingress of dirt from the surroundings, e.g. by using an air-permeable membrane.
  • the tank ventilation can optionally also be active, ie with a valve.
  • the device carrier 310 has a heater 312, a pump 314 and
  • an optional fill level sensor which is e.g. based on the ultrasonic principle
  • an optional fill level sensor which is e.g. based on the ultrasonic principle
  • the heater can thaw frozen water or at least part of the frozen water locally in the area of the suction port of the pump.
  • the heating principle can be different here.
  • the heater is an electric heater.
  • the equipment rack contains connectors for the coolant.
  • the device carrier 310 also has a plug for the electrical / electronic connection of actuators and sensors and optionally a filter in the suction area of the pump.
  • the equipment carrier and the tank bladder are connected by means of a tight connection, e.g. by plastic welding.
  • the water from the water tank can thus be pumped into the pressure line 112 or a rail in a controlled manner via the feed pump 314 for water, so that it can be fed to an application.
  • connection stub for pressure line 112 implemented.
  • the feed pump 314 for water can in principle be implemented using different feed principles and drives, such as a rotary motor, a lifting magnet, etc. Pumps with an overflow throttle or an overflow valve can preferably be used. A possible return of the pump can take place directly in the tank or in the suction path of the pump. The water can from the
  • Pressure line 112 can be metered via devices such as metering valves transported to the application.
  • devices such as metering valves transported to the application.
  • inexpensive metering valves from combustion technology can be used as metering valves, such as valves for gasoline injection.
  • the rail enables
  • the rail can be realized with a flexible pressure hose and various
  • the line system can optionally be designed with an integrated heater.
  • the lines can be made resistant to ice pressure (flexible material) and / or can also be emptied if there is a risk of frost. Partial emptying is also possible.
  • the system 100 can also be expanded by adding rainwater from the chassis of the vehicle through a particle filter and, if necessary, additionally through a chemical filter, for example an activated carbon filter
  • Water tank system 100 is directed.
  • FIG. 4 shows a flow diagram of a method 400 for providing water by a water tank system according to an exemplary embodiment.
  • Method 400 has the following steps:
  • Fuel cells 502 via a feed line to a water separator 104 for generating condensed water.
  • FIG 5 shows the water tank system 100 in a vehicle 500.
  • the place of condensation is thermally shielded from the stack as well as possible, e.g. by a sufficient distance or by insulation, in order to avoid the condensation heat being transferred back to the stack.
  • the tank bladder can preferably have a shape that is adapted to the installation space of the vehicle, while the device carrier with actuators, sensors and connectors can remain the same, which has a correspondingly positive effect on costs and quantities.
  • Warm to hot water vapor emerging from the fuel cell 502 is condensed and, depending on the temperature of the steam and the pipelines, either collected in the water tank 102 for later use or, at a high temperature, condensed in a chimney with a large surface and back to the fuel cell 502, i.e. to the surface of the outside area, or out of condenser 302 or heat exchanger in contact with a fuel cell 502.
  • a water separator 104 for example a wire mesh, can be attached as a condenser.
  • a cyclone 104 can be installed in the feed 106, which additionally promotes condensation.
  • the water tank system 100 is also supplied with outside air 504, which surrounds the cyclone 104 for cooling.
  • the air stream 114, 304 from the cyclone 104 or the condenser 302 is released into the environment.
  • Condensed water is available from the water tank 102 or the condenser 306 on the lines 112 and 306, respectively.
  • the control unit 320 for data acquisition and for controlling the actuators is via an interface with the

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Cyclones (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un système de réservoir d'eau (100) pour un véhicule à piles à combustible. Le système de réservoir d'eau présente un séparateur d'eau (104), lequel est conçu pour la séparation d'eau de vapeur d'eau, comprenant une conduite d'alimentation (106) pour la réception de vapeur d'eau à partir d'un empilement de piles à combustible, et une conduite d'évacuation (110) pour la sortie de l'eau séparée. Le système de réservoir d'eau (100) présente en plus un réservoir d'eau (102), lequel est conçu pour le stockage de l'eau provenant du séparateur d'eau (104), et une ouverture de remplissage (110), laquelle est conçue pour le remplissage du réservoir d'eau (102) avec l'eau séparée et laquelle est connectée à la conduite d'évacuation du séparateur d'eau (104), ainsi qu'un dispositif de prélèvement (108) pour le prélèvement d'eau du réservoir d'eau (102).
PCT/EP2020/065812 2019-07-05 2020-06-08 Système de réservoir d'eau pour la fourniture d'eau pour un véhicule à piles à combustible WO2021004714A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20731460.0A EP3994754A1 (fr) 2019-07-05 2020-06-08 Système de réservoir d'eau pour la fourniture d'eau pour un véhicule à piles à combustible
JP2021576784A JP7350900B2 (ja) 2019-07-05 2020-06-08 燃料電池で動かされる車両のための水を提供する水タンクシステム
CN202080063233.XA CN114365314A (zh) 2019-07-05 2020-06-08 用于为以燃料电池运行的车辆提供水的水箱系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019209932.7A DE102019209932A1 (de) 2019-07-05 2019-07-05 Wassertanksystem zur Bereitstellung von Wasser für ein mit Brennstoffzellen betriebenes Fahrzeug
DE102019209932.7 2019-07-05

Publications (1)

Publication Number Publication Date
WO2021004714A1 true WO2021004714A1 (fr) 2021-01-14

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PCT/EP2020/065812 WO2021004714A1 (fr) 2019-07-05 2020-06-08 Système de réservoir d'eau pour la fourniture d'eau pour un véhicule à piles à combustible

Country Status (5)

Country Link
EP (1) EP3994754A1 (fr)
JP (1) JP7350900B2 (fr)
CN (1) CN114365314A (fr)
DE (1) DE102019209932A1 (fr)
WO (1) WO2021004714A1 (fr)

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DE102021202857A1 (de) 2021-03-24 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zum Abscheiden und Sammeln von Wasser aus einem Gasstrom, Brennstoffzellensystem sowie Verfahren zum Betreiben eines Brennstoffzellensystems
CN115416563B (zh) * 2022-08-29 2023-10-20 佛山仙湖实验室 一种燃料电池旅居车系统

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EP3994754A1 (fr) 2022-05-11
JP7350900B2 (ja) 2023-09-26
JP2022537837A (ja) 2022-08-30
DE102019209932A1 (de) 2021-01-07
CN114365314A (zh) 2022-04-15

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