EP2740175A1 - Bloc de pile à combustible - Google Patents

Bloc de pile à combustible

Info

Publication number
EP2740175A1
EP2740175A1 EP12783198.0A EP12783198A EP2740175A1 EP 2740175 A1 EP2740175 A1 EP 2740175A1 EP 12783198 A EP12783198 A EP 12783198A EP 2740175 A1 EP2740175 A1 EP 2740175A1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel cell
cell block
bypass
supply
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.)
Withdrawn
Application number
EP12783198.0A
Other languages
German (de)
English (en)
Inventor
Frank Bärnreuther
Stefan Dörfler
Joachim Hoffmann
Arno Mattejat
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP12783198.0A priority Critical patent/EP2740175A1/fr
Publication of EP2740175A1 publication Critical patent/EP2740175A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • 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
    • 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
    • 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
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • 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

Definitions

  • the invention relates to a fuel cell block with a supply unit supplying the fuel cell block with a resource
  • Fuel gas is used pure hydrogen, without emission of pollutants and carbon dioxide (C02). To operate a fuel cell resources are supplied, such. B. operating gases.
  • the operating gases used are a hydrogen-containing fuel gas and an oxygen-containing oxidation gas.
  • fuel gases for example, natural gas, coal gas or pure hydrogen can be used.
  • oxidizing gas is usually air or pure oxygen use.
  • a single fuel cell provides an operating voltage of at most about 1.1 V. Therefore, a plurality of fuel cells are combined to form a fuel cell stack, which is part of a fuel cell block. By switching the fuel cells in series, the operating Voltage of a fuel cell block 100 V and more.
  • a fuel cell block comprises not only at least one fuel cell stack but also a so-called operating part - also called supply part.
  • the utility unit houses a variety of separate units such as pumps and compressors, as well as a variety of individual devices such as valves, sensors, electronic monitors, and more. These components, which are distributed in part in the fuel cell block, are largely connected to one another via connections, such as pressure or other fluidic supply lines, as well as electrical connections.
  • the supply part also serves to supply the fuel cell block and thus the fuel cell stack or fuel cells with the operating means, in particular the pressurized operating gases.
  • the invention has for its object to provide a fuel cell block, in which repairs to defective components can be performed easily and inexpensively. This object is achieved by a fuel cell block having the features according to the independent claim.
  • the fuel cell block has a fuel supply unit that supplies the fuel cell block with a resource.
  • the resource supply unit has an integrated valve assembly with at least a first valve and a second valve. Both the first valve and the second valve are integrated in - shared by both valves - connection elements.
  • a resource supply unit is understood to mean a device with usually a plurality of components with the aid of which a resource, such as an operating gas, such as hydrogen or oxygen, can be supplied to the fuel cell block, in particular a fuel cell stack or a fuel cell of this fuel cell block.
  • a resource such as an operating gas, such as hydrogen or oxygen
  • such a resource supply unit ensures that the resources can be supplied to the fuel cell block influenced in terms of quantity and / or condition.
  • the influenceable state of the operating means may be a pressure of the operating medium, in particular an operating gas pressure.
  • Such influencing resource supply unit has, for example, one or more valves, such as electric, electromagnetic, electric motor, pneumatically or hydraulically operated valves, by means of which or wel- An inflow of an operating gas to the fuel cell block can be influenced with regard to the inflow quantity and / or inflow pressure.
  • the influential resource supply unit may include a sensor, for example, a sensor such. Example, a temperature sensor, a transmitter, a pressure gauge or a level sensor, by means of which state parameters of the supplied equipment can be measured and / or influenced.
  • connection elements - and thus formation of the integrated valve group - mean that the two valves are arranged or mounted on or at the connection elements, wherein the connection elements - to the functionality of the module or the module manufacture as a whole (integration) - trained or designed accordingly.
  • Connection elements, bushings or such other may be formed there.
  • further connection elements, feedthroughs or such other - for module or assembly formation - be arranged on the connection elements.
  • the invention is based on the consideration that a repair effort in the fuel cell block is higher, the more individual and separately installed or to be installed components are present in the fuel cell block.
  • highly integrated component groups can be "externally" - as a whole - easily accessible incorporated into an operating part or in the fuel cell block and in case of failure - even locally at a customer - be removed or changed with little effort.
  • both the first and the second valve are integrated into the same connection elements and use the same connection elements, this can result in an (integrated)
  • Valve assembly are formed, which can be as a complete, technically, functionally, technically functional and / or organizationally related and closed component group or module simply from the fuel cell block - as a whole - disassembled and replaced.
  • the first valve is a main valve, for example in the manner of a ball valve or a ball valve
  • the second valve in particular belonging to the main valve, by-pass valve, for example in the manner of an electrically, pneumatically, hydraulically or electromagnetically operable valve.
  • Main valve result in that the bypass valve in a bypass supply, just bypass, is arranged to a main supply of the same resource, which main feed then passes through the main valve.
  • the supply of an operating gas takes place in the fuel cell block under pressure, for example below about 4 bar-6 bar.
  • a valve such as a ball valve
  • a valve Is now in the fuel cell block before a lower pressure than in the feed before, z. B. because of an evacuation, it comes when (re) opening a large valve cross-section of the shut-off valve to a pressure surge in the fuel cell block. This stress can lead to damage.
  • a bypass valve for example, solenoid-operated, bypass valve (secondary valve or bypass valve) for the operating gas before. This is closed during normal operation of the fuel cell block.
  • a valve cross section of the bypass valve is smaller, in particular substantially smaller, than a valve cross section of the main valve, for example by a factor of 2 or a factor of 5 or by a factor of 10 or a factor of 15 is smaller.
  • a main valve cross-section of about 15 mm - 25 mm the bypass valve cross-section is realized with about 2 mm. If the pressure difference is reduced, then the ball valve can be safely operated again. The bypass valve is then closed again.
  • bypass valve can also serve to supply very small volume flows of the operating gases.
  • this main valve and this bypass valve in the common, i. of both, used connection elements are integrated.
  • the thus realized integrated valve assembly can be easily, quickly and inexpensively mounted on the fuel cell block, disassembled and / or replaced.
  • the integrated valve assembly also has the main supply for the resource and the bypass for the resource, wherein the first valve or the main valve affects the resource supply of the main supply and the second valve or the bypass valve affects the resource supply in the bypass ,
  • the invention may also preferably provide for the first and the second valve, in particular the main valve and the bypass valve, to be delimited on both sides by the connecting elements, for example by two plate elements. Simplified and vividly expressed, the two valves are arranged between two such (connection) plates, which ne very compact design of such a valve assembly allows.
  • valve which is not arranged between the two plate elements is arranged directly outside the intermediate space and / or on one of the two plate elements, for example on an upper side of a plate element.
  • this arranged outside the gap other valve can be arranged laterally of the intermediate space and / or laterally of the two plate elements.
  • these plate elements can be flange plates. These can be made of metal or aluminum. Manufacturing processes and / or processing methods, such as machining or forming, in particular deep drawing, are known. According to a further preferred development it is provided that connections and / or feedthroughs and / or in such a plate element or such a flange plate connections and / or bushings for a resource or a service gas are attached to such a plate member or on such a flange plate , The valves may then be connected to or connected to the feeders, feedthroughs and / or connections.
  • Feedthroughs or feeds may be, for example
  • the integrated valve assembly has a third valve, by means of which the first or the second valve can be actuated, for example via a pneumatic drive.
  • a pilot valve which actuates this ball valve pneumatically, for example in the manner of an electric or pneumatic valve-as the first valve-can be provided as this third valve.
  • FIG. 1 shows a valve assembly for a fuel cell block according to a first embodiment
  • FIG. 3 shows a simplified representation of the valve assembly according to a second embodiment
  • FIG. 4 shows a simplified representation of the valve assembly according to a third embodiment.
  • FIG. 1 and 2 and FIG. 3 and FIG. 4 Integrated Valve Assemblies in a Fuel Cell Block
  • FIG 1 shows in a three-dimensional representation an integrated valve assembly 4 for the supply of a fuel cell block 1 (not shown) with a pressurized, for example, about 3.5 bar - 4 bar, stationary operating gas 2, here for example hydrogen.
  • FIG 2 illustrates, in addition to FIG 1, the structure of this integrated valve assembly 4 and the operating gas inlet or feedthrough 18 through this integrated valve assembly 4 in a simplified detailed representation.
  • the integrated valve assembly 4 like FIGS. 1 and 2, has as main components a main valve 5, i. here a pneumatically switchable ball valve 5 or a ball valve 5, with a pneumatic actuator 19 for the ball valve 5 having valve body 20, a bypass valve 6 in the manner of a solenoid valve 6, two flange plates 7, 8, i. a first, here in Figures 1 and 2 shown below flange 7 and a second, shown here in Figures 1 and 2 above flange plate 8, and a - visible in Figure 1 outwardly - Bypass tube 16.
  • main valve 5 i. here a pneumatically switch
  • bypass bores 23 extend on the one hand inside the flange plates 7, 8, there in each case approximately perpendicular to the central (through) bore 21, 22, and then leave the respective flange plate 7, 8 outwardly or upwardly approximately in the edge region of the respective Flange plate 7, 8.
  • a further small bypass bore 23 is arranged as a through hole also approximately in the edge region of the upper flange plate 8.
  • the ball valve 5 is arranged between the two flange plates 7, 8 such that inflow and outflow to and from the ball valve 5 directly to the central (through) bores 21, 22 in the flange plates 7, 8, whereby the main flow 15 through the integrated valve assembly 4 is formed.
  • the bypass pipe 16 and the bypass valve 6 are, like the
  • FIGS. 1 and 2 likewise show such a relationship between or on the two flange plates 7, 8 that the bypass 16 is thereby formed by the integrated valve assembly 4.
  • the bypass pipe 16 is arranged between the two flange plates 7, 8 and is there with the bypass holes 23 in connection. Further, at the lower flange plate 7 a supply / discharge connection 17 - fluidly connected to the local central bore 21 - flanged, what the supply / discharge the operating gas 2 to or away from the integrated valve assembly 4 is used.
  • the integrated valve assembly 4 can, as illustrated by the arrows 11, are flowed through in two flow directions 11.
  • All components of the integrated valve assembly 4, which is also part of the equipment supply unit 3 are, as described, integrated into the two flange plates 7, 8 (and use them together), which is precisely this integrated assembly 4 is formed - and this so this as a whole "Handle-bar", ie mountable or dismountable, is or is.
  • the integrated valve assembly 4 has, as shown in FIGS. 1 and 2, various screw holes 14 in the two flange plates 7, 8 and a screw 13 on the valve body 20, via which the integrated valve assembly 4 on a plate (not shown) of the
  • the integrated valve assembly 4 as described above the pure shut-off of the operating gas supply beyond the protection of the fuel cell block 1 from pressure-related damage at greater pressure differences between the operating gas supply and the fuel cell block 1.
  • In normal operation is - with open main or ball valve 5 and closed Bypass valve 6 - the operating gas 2 via the local main flow 15 through the integrated valve assembly 4 - and from there into the fuel cell block 1 - out.
  • the fuel cell block 1 threatens to open when it is opened the main valve 5, a pressure surge, which can lead to damage there.
  • bypass valve 6 is now opened, whereby the pressure difference before and after the integrated valve assembly 4 and the operating gas supply via the bypass 16 is gradually reduced.
  • FIG. 3 and FIG. 4 each show the construction of a further integrated valve assembly 4 as well as the local operating gas supply or implementation in a correspondingly simplified detail representation as in FIG. 2.
  • FIG. 3 shows, here too, i. as well as the main or ball valve 5, the bypass valve 6 - at corresponding bypass holes 23 in the two flange plates 7, 8 - between the two flange plates 7, 8, there parallel to the Haupt,. Ball valve 5, arranged.
  • the main or ball valve 5 is disposed between the two flange plates 7, 8, whereas the bypass valve 6 - with corresponding bypass holes 23 in the two
  • the embodiments of integrated valve assemblies 4 in fuel cell blocks 1 are based on the consideration that a repair effort in the fuel cell block 1 is higher, the more individual and separately installed or components to be installed are present in the fuel cell block 1. Especially in the case of numerous, sometimes highly complex and error-prone components of the fuel supply unit 3 of a fuel cell block 1, this consideration plays an essential role.
  • valve assemblies 4 provide a summary of, in particular, technically, functionally, functionally and / or organisationally related components, such as here the main or bypass valves 5, 6, which cooperate for the operating gas supply and pressure protection a component group 4 or to a module 4 before.
  • valve assembly groups 4 not only simplify a structure of the fuel cell block 1, but allow them "from the outside” - as a whole - easily accessible incorporated into an operating part or in the fuel cell block 1 and in case of failure - even on-site at a customer - with low Expenditure can be expanded or changed.

Landscapes

  • 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)

Abstract

L'invention concerne un bloc de pile à combustible (1) comprenant une unité d'alimentation de carburant (3) qui alimente le bloc de pile à combustible (1) avec un carburant (2). L'unité d'alimentation de carburant (3) comporte un ensemble de vannes intégrées (4) comprenant au moins une première vanne (5) et une deuxième vanne (6). La première vanne (5) de même que la deuxième vanne (6) sont intégrées dans des éléments de raccordement (7, 8) utilisés conjointement par les deux vannes (5, 6). Selon l'invention, il est prévu en outre que les éléments de raccordement (7, 8) utilisés conjointement sont deux plaques à bride (7, 8), comportant chacune des traversées (9, 21, 22, 23) pour le carburant (2), auxquelles la première et la deuxième vanne (5, 6) sont raccordées.
EP12783198.0A 2011-12-01 2012-11-02 Bloc de pile à combustible Withdrawn EP2740175A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12783198.0A EP2740175A1 (fr) 2011-12-01 2012-11-02 Bloc de pile à combustible

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11191536.9A EP2600453A1 (fr) 2011-12-01 2011-12-01 Bloc de cellule de combustible
PCT/EP2012/071750 WO2013079273A1 (fr) 2011-12-01 2012-11-02 Bloc de pile à combustible
EP12783198.0A EP2740175A1 (fr) 2011-12-01 2012-11-02 Bloc de pile à combustible

Publications (1)

Publication Number Publication Date
EP2740175A1 true EP2740175A1 (fr) 2014-06-11

Family

ID=47143894

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11191536.9A Withdrawn EP2600453A1 (fr) 2011-12-01 2011-12-01 Bloc de cellule de combustible
EP12783198.0A Withdrawn EP2740175A1 (fr) 2011-12-01 2012-11-02 Bloc de pile à combustible

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11191536.9A Withdrawn EP2600453A1 (fr) 2011-12-01 2011-12-01 Bloc de cellule de combustible

Country Status (5)

Country Link
EP (2) EP2600453A1 (fr)
KR (1) KR20140103104A (fr)
AU (1) AU2012344200A1 (fr)
IN (1) IN2014KN00800A (fr)
WO (1) WO2013079273A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10035763B4 (de) * 2000-07-22 2006-07-27 Nucellsys Gmbh Vorrichtung zum Dosieren eines gasförmigen Mediums
US20080110514A1 (en) * 2005-01-26 2008-05-15 Naohiro Yoshida Fuel Tank System
KR100974742B1 (ko) * 2008-06-26 2010-08-06 현대자동차주식회사 수소 공급 시스템의 일체형 압력 조절 액츄에이터 어셈블리

Also Published As

Publication number Publication date
IN2014KN00800A (fr) 2015-10-02
AU2012344200A1 (en) 2014-05-29
KR20140103104A (ko) 2014-08-25
EP2600453A1 (fr) 2013-06-05
WO2013079273A1 (fr) 2013-06-06

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