WO2021069311A2 - Dispositif pour déposer une substance liquide, notamment de l'eau, pour un système de piles à combustible - Google Patents

Dispositif pour déposer une substance liquide, notamment de l'eau, pour un système de piles à combustible Download PDF

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Publication number
WO2021069311A2
WO2021069311A2 PCT/EP2020/077615 EP2020077615W WO2021069311A2 WO 2021069311 A2 WO2021069311 A2 WO 2021069311A2 EP 2020077615 W EP2020077615 W EP 2020077615W WO 2021069311 A2 WO2021069311 A2 WO 2021069311A2
Authority
WO
WIPO (PCT)
Prior art keywords
branch
separating
fuel cell
line
liquid medium
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/EP2020/077615
Other languages
German (de)
English (en)
Other versions
WO2021069311A3 (fr
Inventor
Jochen Wessner
Martin Katz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 WO2021069311A2 publication Critical patent/WO2021069311A2/fr
Publication of WO2021069311A3 publication Critical patent/WO2021069311A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/34—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers without moving parts other than hand valves, e.g. labyrinth type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/12—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by excess or release of pressure
    • 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
    • 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
    • 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

  • the invention relates to a device for separating a liquid medium, in particular water, for a fuel cell system, for example for use in vehicles with fuel cell drives.
  • the fuel cell system has a fuel cell to which oxygen and hydrogen are supplied. This then reacts in the fuel cell to form water or water vapor. Electrochemical conversion thus provides electrical power that is used as drive energy for the vehicle.
  • the reaction product water or water vapor is typically released into the environment, for example via a liquid separator.
  • a gas-liquid separator is known from DE 10 2017 221 302 A1 which has a container to which at least one liquid component of a medium, in particular water, is fed via an inlet and which can be drained from the container via a discharge valve.
  • the remaining gaseous constituent of the medium, in particular hydrogen, can be returned to an outflow line via a first outlet.
  • nitrogen is also contained in the gaseous component of the medium, which is also separated by the gas-liquid separator.
  • the device according to the invention with the characterizing features of claim 1 has the advantage of improving the water separation in a fuel cell system so that the pressure loss and the installation space are minimized and high separation rates are still achieved.
  • the device for separating a liquid medium, in particular special water, for a fuel cell system comprises a line, which line has a molding, in which molding a collecting container for water is formed, a separating device being arranged in the collecting container, which separating device is designed for this purpose is to absorb liquid medium, especially water.
  • the water in the device for separating a liquid medium in particular water, can be separated in a simple manner so that it is not entrained again by the gaseous flow within the line. Overall, this increases the efficiency of the entire fuel cell system.
  • the separating device is designed as a knitted, open-pore mats made of stainless steel.
  • water droplets can collect within the meshes formed in the mats and, due to the high surface forces, remain there and are not swept away again by the current.
  • the fabric of the mats advantageously has a certain elasticity so that the structure is not destroyed when ice forms.
  • the separating device is wetted with a liquid medium, in particular water. Active wetting leads to the fact that vaporous water adheres better to the structure and the droplets.
  • the formation is V-shaped and has a first branch and a second branch.
  • the first branch is formed obliquely to a longitudinal axis of the line and the second branch perpendicular to the longitudinal axis of the line.
  • the molding is U-shaped and has a first branch and a second branch.
  • the first branch is advantageously formed obliquely to a longitudinal axis of the line and the second branch perpendicular to the longitudinal axis of the Lei device.
  • the formation is stepped and has a first branch and a second branch.
  • the first branch is advantageously formed parallel to a longitudinal axis of the line and the second branch is formed perpendicular to the longitudinal axis of the line.
  • the device described for separating a liquid medium, in particular special water, is preferably suitable in a fuel cell arrangement.
  • the device described for separating a liquid medium in particular special water, is preferably suitable in a vehicle with fuel cell drive.
  • Fig. 1 shows an embodiment of a device according to the invention for separating a liquid medium in an anode area of a fuel cell system in a simplified view
  • FIG. 2a shows the device according to the invention for separating a liquid medium for a fuel cell from FIG. 1 with a separating device and a V-shaped molding of the line in a longitudinal section
  • FIG. 2b shows the device according to the invention for separating a liquid medium for a fuel cell from FIG. 1 with a separating device and a U-shaped molding of the line in a longitudinal section
  • FIG. 2c the device according to the invention for separating a liquid Me medium for a fuel cell from FIG. 1 with a separating device and stepped molding of the line in longitudinal section,
  • FIG. 3 shows the separating device from FIG. 1 in a schematic view.
  • Fig.l shows an example of an anode area 24 of a fuel cell system with an embodiment of a device 1 according to the invention for separating a liquid medium, in particular water, for example for use in vehicles with fuel cell drives, in a simplified view.
  • a tank 14, a hydrogen metering valve 16, a jet pump 18 and a recirculation pump 22 are also arranged in the anode region 24.
  • the hydrogen stored in the tank 14 is fed via a feed line 26 to the hydrogen metering valve 16, which doses the hydrogen as required and feeds it to the fuel cell 20 in combination with the jet pump 18.
  • Unused hydrogen and reaction products such as water or what steam or partial reaction products such as nitrogen are passed from the fuel cell 20 via a line 2.
  • the device 1 according to the invention for separating a liquid medium, in particular special water is formed.
  • the device 1 also has a drain valve 6 so that the liquid medium, here water, can be drained from the anode area 24 of the fuel cell system, for example into an ambient area.
  • a further discharge valve 28 is advantageously provided in order to also direct the partial reaction products, such as nitrogen, out of the fuel cell system.
  • the unused hydrogen is fed into the jet pump 18 by means of the recirculation pump 22 for reuse and fed to the fuel cell 20 again.
  • the line 2a shows the device 1 according to the invention for separating a liquid medium, in particular water, in an enlarged view in cross section.
  • the line 2 is cylindrical here and has a V-shaped projection 4.
  • a collecting container 10 for the reac tion product water is formed, with a first branch 30 of the V-shaped formation 4 obliquely to a longitudinal axis 34 of the line 2 and a second branch 32 of the V-shaped projection 4 perpendicular is arranged to the longitudinal axis 34 of the line 2.
  • the molding 4 of the line 2 can, for example, also assume other geometrical shapes as shown in FIG. 2b.
  • the molding 4 is U-shaped and also has a first branch 30 'and a second branch 32', the first branch 30 'of the U-shaped molding 4 being inclined to the longitudinal axis 34 of the line 2 and the second branch Branch 32 'of the U-shaped requirement 4 is arranged perpendicular to the longitudinal axis 34 of the line 2.
  • the line 2 here has a first branch 30 ′′ and a second branch 32 ′′, the second branch 32 ′′ being perpendicular to the longitudinal axis 34 is arranged and the first branch 30 ′′ is arranged parallel to the longitudinal axis 34 and a section 36 of the first branch 30 ′′ is widened conically in the direction of the collector 10.
  • the projection 4 of the conduit 2 can also be arranged perpendicular to the weight force, i.e. out of the plane of the drawing, because the water does not move in the direction of flow, but perpendicular to it when it hits one end of the conduit 2 meets.
  • a separating device 8 in the form of knitted, open-pored mats 80 made of stainless steel is arranged in the first branch 30, 30 ‘, 30 ′′. As shown in FIG. 3, these mats 80 have meshes 81 in which water droplets can collect and, due to the high surface forces, remain there and are not torn away again by the flow.
  • the mesh 81 has a mesh size, whereby the water is guided within a mesh structure of the mesh 81 to the collecting container 10, whereby the acceleration due to gravity is sufficient for this. That is, over time, the separating device 8 will lead ge through the flow in the collecting container 10.
  • the fabric of the mats 80 has a certain elasticity, so that the structure will not be destroyed in the event of ice formation.
  • the fabric of the mats 80 must therefore be at least as elastic that it can withstand this expansion (> 10%).
  • the device 1 according to the invention for separating a liquid medium, in particular water, which is arranged in the anode region 24 of a fuel cell system, is used, for example, in vehicles with fuel cell drives.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (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)

Abstract

L'invention concerne un dispositif (1) pour déposer une substance liquide, notamment de l'eau, pour un système de piles à combustible, comprenant une conduite (2), ladite conduite (2) présentant une partie façonnée (4), un récipient de recueil (10) destiné à de l'eau étant disposé dans la partie façonnée (4), un dispositif de séparation (8) étant agencé dans le récipient de recueil (10), le dispositif de séparation (8) étant conçu pour recevoir une substance liquide, notamment de l'eau.
PCT/EP2020/077615 2019-10-10 2020-10-02 Dispositif pour déposer une substance liquide, notamment de l'eau, pour un système de piles à combustible Ceased WO2021069311A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019215498.0A DE102019215498A1 (de) 2019-10-10 2019-10-10 Vorrichtung zum Abscheiden eines flüssigen Mediums, insbesondere Wasser, für ein Brennstoffzellensystem
DE102019215498.0 2019-10-10

Publications (2)

Publication Number Publication Date
WO2021069311A2 true WO2021069311A2 (fr) 2021-04-15
WO2021069311A3 WO2021069311A3 (fr) 2021-07-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/077615 Ceased WO2021069311A2 (fr) 2019-10-10 2020-10-02 Dispositif pour déposer une substance liquide, notamment de l'eau, pour un système de piles à combustible

Country Status (2)

Country Link
DE (1) DE102019215498A1 (fr)
WO (1) WO2021069311A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT525805A4 (de) * 2022-02-10 2023-08-15 Avl List Gmbh Abscheidevorrichtung für ein Brennstoffzellensystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022202962A1 (de) 2022-03-25 2023-09-28 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zur Detektion von Flüssigwasser in einem Gasstrom, Brennstoffzellensystem

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017221302A1 (de) 2017-11-28 2019-05-29 Robert Bosch Gmbh Gas-Flüssigkeitsabscheider zum Abscheiden von zumindest einem flüssigen Bestandteil von einem gasförmigen Bestandteil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6579637B1 (en) * 2000-05-31 2003-06-17 General Motors Corporation Fuel cell system having a compact water separator
DE102012014610A1 (de) * 2012-07-24 2014-01-30 Daimler Ag Brennstoffzellensystem mit einem Flüssigkeitsabscheider
DE102014003310A1 (de) * 2014-03-08 2015-09-10 Daimler Ag Abluftanlage
DE102016010450A1 (de) * 2016-08-30 2018-03-01 Daimler Ag Flüssigkeitsabscheider und seine Verwendung
DE102017002741A1 (de) * 2017-03-22 2018-09-27 Daimler Ag Brennstoffzellenfahrzeug
DE102017221309A1 (de) * 2017-11-28 2019-05-29 Robert Bosch Gmbh Gas-Flüssigkeitsabscheider zum Abscheiden von zumindest einem flüssigen Bestandteil von einem gasförmigen Bestandteil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017221302A1 (de) 2017-11-28 2019-05-29 Robert Bosch Gmbh Gas-Flüssigkeitsabscheider zum Abscheiden von zumindest einem flüssigen Bestandteil von einem gasförmigen Bestandteil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT525805A4 (de) * 2022-02-10 2023-08-15 Avl List Gmbh Abscheidevorrichtung für ein Brennstoffzellensystem
AT525805B1 (de) * 2022-02-10 2023-08-15 Avl List Gmbh Abscheidevorrichtung für ein Brennstoffzellensystem

Also Published As

Publication number Publication date
WO2021069311A3 (fr) 2021-07-01
DE102019215498A1 (de) 2021-04-15

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