WO2004075324A2 - Brennstoffzellenstapel - Google Patents
Brennstoffzellenstapel Download PDFInfo
- Publication number
- WO2004075324A2 WO2004075324A2 PCT/DE2004/000306 DE2004000306W WO2004075324A2 WO 2004075324 A2 WO2004075324 A2 WO 2004075324A2 DE 2004000306 W DE2004000306 W DE 2004000306W WO 2004075324 A2 WO2004075324 A2 WO 2004075324A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- cell stack
- fuel
- longitudinal channels
- zone
- Prior art date
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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
-
- 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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of 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 stack with a plurality of fuel cell elements stacked one on top of the other, each with separating plates arranged therebetween, at least one internal feed channel being provided for supplying a fuel gas and at least one internal discharge channel being provided for discharging an exhaust gas and extending in the stacking direction.
- Fuel cell stacks are used because a single fuel cell element generates only a very low voltage. In order to generate a voltage that can be used for application purposes, several fuel cell elements are therefore connected in series, so that the cell voltages add up.
- the fuel cell elements are arranged one on top of the other in such a way that a space remains between the fuel cell elements and the separating plates, a fuel gas being provided on one side of the fuel cell element and an oxidizing agent being provided on the other side of the fuel cell element.
- the spaces between the fuel gas and the oxidizing agent are usually designed in the form of a plurality of channels, so that there is a positive and electrical contact between the fuel line elements and the separating plates between the channels. In this way, heat and electricity generated in the fuel cells can be dissipated.
- Fuel gases for fuel cell elements are hydrogen or a hydrogen-containing gas, which is accordingly critical with regard to handling. Hydrogen-containing gas escaping due to a fault or a leak would react, for example, with the atmospheric oxygen in an uncontrolled manner and at least damage result in the fuel cell system. It is therefore known to use internal feed and discharge channels.
- recesses are provided in the individual fuel cell elements and the separating plates arranged between them, which form the channels in the assembled state of the fuel cell stack. Seals are provided around the recesses, so that a tight channel is formed when the fuel cell stack is appropriately braced. In this way, the required tightness can be ensured rather than with an external fuel gas supply.
- Fuel gas and the oxidizing agent are provided so that the directions of the gas flows cross.
- the gas guides are open on the respective sides of the fuel cell stack, the respective gas flowing against the sides of the fuel cell stack.
- Fuel cell stacks in this so-called cross-flow technology have a relatively poor power density.
- the external supply of fuel gas is also problematic with regard to the tightness and the inadvertent escape of hydrogen-containing fuel gas.
- the fuel gas is conducted to the respective fuel cell elements via internal feed channels.
- the oxidizing agent is supplied externally and guided along the other side of the fuel cell elements in the direction transverse to the flow direction of the fuel gas.
- a third embodiment shows how the fuel gas and the oxidizing agent can be supplied so that there is a parallel flow direction of the two gases.
- This Direct current technology or, in the opposite direction of flow, the principle called counter current technology has the advantage that the temperature distribution and the gas concentration are more uniform.
- the disadvantage is that a lot of feed channels and drainage channels have to be provided, which has a high number of seals and associated Dichtigke 'itsprobleme result.
- the effort for supplying and discharging the gases to the supply and discharge channels is very large, which makes fuel cell systems with such fuel cell stacks relatively expensive.
- the internal supply of oxidizing agents is also disadvantageous because the complicated line routing results in a high pressure loss and thus results in a limited oxidizing agent throughput. To compensate, stronger fans can be provided, but this entails additional costs. In addition, the efficiency of the overall system deteriorates because an increased drive power is required for the stronger fans.
- the limited oxidant throughput has the particular disadvantage that the oxidizing agent, e.g. Air, the heat generated in the fuel cells is insufficiently dissipated.
- the oxidizing agent e.g. Air
- the object of the invention is therefore to provide a fuel cell stack which works in cocurrent technology or countercurrent technology and nevertheless enables a simple system connection while ensuring a high oxidant throughput.
- a fuel cell stack of the type mentioned at the outset which is characterized in that on the first side of the fuel cell elements, a plurality of parallel longitudinal channels for guiding the fuel gas, a distributor zone which connects the feed channel to the first ends of the longitudinal channels, and one Collection zone, which connects the discharge channel with the respective second end of the longitudinal channels, is provided and on the second side of the fuel cell elements an oxidizing agent guide is formed which runs in the direction of the longitudinal channels and is open to the sides of the fuel cell stack for supplying the oxidizing agent.
- the feed channel and the discharge channel can be arranged in such a way that no components lie in the flow path of the oxidizing agent.
- the oxidizing agent can thus be supplied externally, which makes the construction of a fuel cell system with the fuel cell stack according to the invention simple and inexpensive.
- the feed channel and the discharge channel can be provided on the same side of the fuel cell stack, so that a strong bracing only has to be provided on this side of the fuel cell stack. Since only the fuel gas is supplied internally, there is sufficient space for the distribution and collection zone. Therefore, the fuel cell stack can be realized with only one feed channel and only one discharge channel, which greatly reduces the number of feedthroughs per plate and therefore only very few seals are necessary.
- the fuel cell stack according to the invention has the advantage of improved cooling due to an increased oxidant throughput, a simpler and cheaper construction and an increased reliability. Tensioning of the fuel cell stack is only possible in a small area around the seals, which makes the fuel cell stack very light, which results in a higher vibration tolerance and less construction work.
- the distributor zone and the discharge zone taper starting from the feed channel or discharge channel along the ends of the longitudinal channels. This makes it particularly smooth
- FIG. 1 shows a schematic illustration of a fuel cell element with the flow directions of the fuel gas and the oxidizing agent
- FIG. 2 shows a three-dimensional representation of a fuel cell stack with several fuel elements
- FIG. 3 shows a three-dimensional representation of a separating plate
- FIG. 4 shows the assignment of a fuel cell element to a partition plate
- FIG. 5 shows the arrangement of the feed and discharge channel in a first embodiment
- Figure 7 shows the arrangement of the feed and discharge channel in a third embodiment.
- FIG. 1 shows a plan view of the underside of a • fuel cell element 2 in a schematic representation.
- An active region 12 of the fuel cell element 2 is flowed over by fuel gas 13 on the upper side.
- the fuel gas is fed to the fuel cell element 2 via a feed channel 4.
- the feed channel 4 is formed by openings in the stacked fuel cell elements and separating plates arranged between them.
- the fuel gas 13 is guided over the active region 12 of the fuel cell element 2 in longitudinal channels, but these cannot be seen in FIG. 1, since they are formed by the profiling of the separating plates arranged between fuel cell elements.
- a distributor zone 7 is formed, in which the fuel gas supplied through the feed channel 4 is divided into the individual longitudinal channels.
- oxidizing agent 15 in the simplest case air, is guided over the underside of the active region 12.
- the flow direction of the oxidant runs in the same direction as the fuel gas 13.
- the adjacent sides of the fuel cell element 2 are free for external supply of the oxidizing agent 15, the flow of which is not impeded by channels running there, as would be the case with an arrangement according to the prior art described at the beginning.
- the oxidizing agent 15 leaves the fuel cell element on the opposite side as exhaust air 16.
- FIG. 2 shows a more specific embodiment of a fuel cell stack according to the invention in a perspective view.
- the fuel cell stack 1 is cut open on its upper side, so that the separating plate 3 lying under a fuel cell element 2 is visible.
- Long channels 6 are formed on the separating plate 3 on the upper side, through which the fuel gas 13 is passed and which leaves the fuel cell stack again as exhaust gas 14.
- a distributor zone 7 is formed in the embodiment of FIG. 2 in that a web 17 is provided at a distance from the ends of the longitudinal channels 6 and delimits the area between the ends of the longitudinal channels 6 and the edge of the separating plate 3. Fuel gas 13 flowing in through the feed channel 4 can be divided into the individual longitudinal channels 6 in the distributor zone 7.
- the distributor zone 7 is designed such that it tapers along the ends of the longitudinal channels, which results in an improved pressure distribution.
- the top of the partition plate 3 is profiled so that entering through the feed channel 4
- Fuel gas 13 cannot flow directly to the discharge duct 5, but must pass through the longitudinal ducts 6.
- a collecting zone 8 is formed, which is designed in the same way as the distributor zone 7.
- the oxidant 15 flows parallel to the direction of the longitudinal channels 6 on the other 'side of the partition plate and thus to the underlying fuel cell element along.
- FIG. 3 shows a partition plate 3 in a detailed representation. Longitudinal channels 6 are formed on the upper side of the separating plate 3 by a multiplicity of parallel grooves. Between the feed channel 4 and the discharge channel 5, the thickness of the separating plate 3 is provided in such a way that the incoming gas cannot flow directly to the discharging channel 5, since the separating plate in this area bears positively on an overlying fuel cell element.
- An oxidizing agent guide 9 is provided on the underside of the separating plate and extends in the direction of the longitudinal channels 6 on the upper side of the separating plate 3.
- Another fuel cell element on the underside of the separating plate, but since all separating plates 3 are equipped identically, a further separating plate 3 would lie on top of a fuel cell element resting on the separating plate 3, so that one on the other side of the fuel cell element Oxidizing agent guide 9 adjoins.
- separating plates 3 are wave-shaped in the section adjoining the active region 12, so that the channels for the fuel gas 13 and for the oxidizing agent 15 are offset.
- FIG. 4 shows how the fuel assembly from FIG. 3 and a fuel cell element are assembled. It can be seen in particular that the openings in the fuel cell element 2 and the separating plate 3 come to lie one above the other to form the feed channel 4 and the discharge channel 5.
- FIG. 5 shows a top view of a separating plate 3 with the flow direction of the fuel gas shown in a first embodiment.
- the feed channel 4 and the discharge channel 5 are arranged on the same side of the partition plate 3 and thus of the fuel cell stack.
- An alternative arrangement is shown in FIG. 6.
- the openings provided to form the supply and discharge channels are provided in the area of opposite corners of the separating plates 3 and the fuel cell elements. This arrangement can prove to be advantageous when it comes to a very uniform distribution of the fuel gas concentration in the fuel cell element, since the ones to be covered
- FIG. 1 Another alternative for the arrangement of the openings is shown in FIG. There, the openings for both the feed channel 4 and for the discharge channel 5 are arranged on the side of the first ends of the longitudinal channels 6, that is, where the fuel gas 13 flows into the longitudinal channels 6.
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
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200480004852A CN100595955C (zh) | 2003-02-20 | 2004-02-19 | 燃料电池堆 |
JP2006501506A JP2006518538A (ja) | 2003-02-20 | 2004-02-19 | 燃料電池スタック |
US10/542,729 US8012644B2 (en) | 2003-02-20 | 2004-02-19 | Fuel cell stack |
EP04712477A EP1595303A2 (de) | 2003-02-20 | 2004-02-19 | Brennstoffzellenstapel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307278.0 | 2003-02-20 | ||
DE10307278A DE10307278B4 (de) | 2003-02-20 | 2003-02-20 | Brennstoffzellenstapel |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004075324A2 true WO2004075324A2 (de) | 2004-09-02 |
WO2004075324A3 WO2004075324A3 (de) | 2004-10-21 |
Family
ID=32841746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000306 WO2004075324A2 (de) | 2003-02-20 | 2004-02-19 | Brennstoffzellenstapel |
Country Status (6)
Country | Link |
---|---|
US (1) | US8012644B2 (de) |
EP (1) | EP1595303A2 (de) |
JP (1) | JP2006518538A (de) |
CN (1) | CN100595955C (de) |
DE (1) | DE10307278B4 (de) |
WO (1) | WO2004075324A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100637490B1 (ko) * | 2004-09-17 | 2006-10-20 | 삼성에스디아이 주식회사 | 연료 전지용 스택과 이를 갖는 연료 전지 시스템 |
DE102009013599A1 (de) * | 2008-09-19 | 2010-03-25 | Mtu Onsite Energy Gmbh | Brennstoffzellenanordnung mit verbesserter Gasrückführung |
CN104110452A (zh) | 2013-04-16 | 2014-10-22 | 京西重工(上海)有限公司 | 制动系统中的主缸总成以及活塞止挡件 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5541015A (en) * | 1992-05-12 | 1996-07-30 | Sanyo Electric Co., Ltd. | Fuel cell using a separate gas cooling method |
US6261710B1 (en) * | 1998-11-25 | 2001-07-17 | Institute Of Gas Technology | Sheet metal bipolar plate design for polymer electrolyte membrane fuel cells |
DE10047248A1 (de) * | 2000-09-23 | 2002-04-18 | Dornier Gmbh | Elektrochemischer Zellenstapel |
EP1248310A1 (de) * | 1999-10-21 | 2002-10-09 | Matsushita Electric Industrial Co., Ltd. | Polymerelektrolybrennstoffzelle |
EP1255315A1 (de) * | 2000-02-08 | 2002-11-06 | Matsushita Electric Industrial Co., Ltd. | Polymer elektrolytische brennstoffzelle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US444851A (en) * | 1891-01-20 | Saw-guide | ||
US4444851A (en) * | 1982-06-28 | 1984-04-24 | Energy Research Corporation | Fuel cell stack |
JPS59188679U (ja) * | 1983-06-01 | 1984-12-14 | 三菱電機株式会社 | 燃料電池のガス分配装置 |
FR2564250B1 (fr) | 1984-05-11 | 1986-09-12 | Alsthom Atlantique | Ameliorations aux structures des piles a combustible |
JPH0775166B2 (ja) * | 1984-12-21 | 1995-08-09 | 株式会社東芝 | 溶融炭酸塩型燃料電池 |
JPH05205757A (ja) * | 1991-11-26 | 1993-08-13 | Sanyo Electric Co Ltd | 燃料電池 |
JPH07296831A (ja) * | 1994-04-27 | 1995-11-10 | Tokyo Gas Co Ltd | 固体電解質燃料電池 |
US5811202A (en) * | 1997-08-05 | 1998-09-22 | M-C Power Corporation | Hybrid molten carbonate fuel cell with unique sealing |
GB9915925D0 (en) * | 1999-07-08 | 1999-09-08 | Univ Loughborough | Flow field plates |
US6322919B1 (en) * | 1999-08-16 | 2001-11-27 | Alliedsignal Inc. | Fuel cell and bipolar plate for use with same |
-
2003
- 2003-02-20 DE DE10307278A patent/DE10307278B4/de not_active Expired - Lifetime
-
2004
- 2004-02-19 EP EP04712477A patent/EP1595303A2/de not_active Withdrawn
- 2004-02-19 WO PCT/DE2004/000306 patent/WO2004075324A2/de active Application Filing
- 2004-02-19 CN CN200480004852A patent/CN100595955C/zh not_active Expired - Fee Related
- 2004-02-19 US US10/542,729 patent/US8012644B2/en active Active
- 2004-02-19 JP JP2006501506A patent/JP2006518538A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5541015A (en) * | 1992-05-12 | 1996-07-30 | Sanyo Electric Co., Ltd. | Fuel cell using a separate gas cooling method |
US6261710B1 (en) * | 1998-11-25 | 2001-07-17 | Institute Of Gas Technology | Sheet metal bipolar plate design for polymer electrolyte membrane fuel cells |
EP1248310A1 (de) * | 1999-10-21 | 2002-10-09 | Matsushita Electric Industrial Co., Ltd. | Polymerelektrolybrennstoffzelle |
EP1255315A1 (de) * | 2000-02-08 | 2002-11-06 | Matsushita Electric Industrial Co., Ltd. | Polymer elektrolytische brennstoffzelle |
DE10047248A1 (de) * | 2000-09-23 | 2002-04-18 | Dornier Gmbh | Elektrochemischer Zellenstapel |
Non-Patent Citations (1)
Title |
---|
See also references of EP1595303A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004075324A3 (de) | 2004-10-21 |
DE10307278A1 (de) | 2004-09-09 |
EP1595303A2 (de) | 2005-11-16 |
CN100595955C (zh) | 2010-03-24 |
JP2006518538A (ja) | 2006-08-10 |
DE10307278B4 (de) | 2008-03-27 |
US8012644B2 (en) | 2011-09-06 |
CN1754278A (zh) | 2006-03-29 |
US20060073374A1 (en) | 2006-04-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3631884B1 (de) | Separatorplatte für ein elektrochemisches system | |
EP0876686B1 (de) | Flüssigkeitsgekühlte brennstoffzelle mit verteilungskanälen | |
EP1830426B1 (de) | Bipolarplatte, insbesondere für einen Brennstoffzellenstapel eines Fahrzeugs | |
EP2356714B1 (de) | Brennstoffzelle ohne bipolarplatten | |
DE602004008220T2 (de) | Brennstoffzelle | |
DE102008056900A1 (de) | Bipolarplatte für eine Brennstoffzellenanordnung, insbesondere zur Anordnung zwischen zwei benachbarten Membran-Elektroden-Anordnungen in einem Brennstoffzellenstapel | |
DE102018200673B4 (de) | Bipolarplatte, Brennstoffzelle und ein Kraftfahrzeug | |
WO2019229138A1 (de) | Separatorplatte für ein elektrochemisches system | |
DE102008055804B4 (de) | Bipolarplatte zur verwendung in einer brennstoffzelle | |
DE102006056468A1 (de) | Bipolarplatte, insbesondere für einen Brennstoffzellenstapel eines Fahrzeugs | |
EP3314687A1 (de) | Strömungsfeld einer brennstoffzelle | |
DE102004058117A1 (de) | Dickenoptimierte Bipolarplatte für Brennstoffzellenstapel sowie Bipolarplattenanordnung in einem Brennstoffzellenstapel | |
WO2004075324A2 (de) | Brennstoffzellenstapel | |
DE102006039794A1 (de) | Polymer-Feststoffbrennstoffzelle | |
DE102005037093A1 (de) | Brennstoffzelle mit Fluidführungskanälen mit sich gegenläufig ändernden Strömungsquerschnitten | |
WO2004015807A1 (de) | Brennstoffzellenstapel mit gegenstromkühlung und einer vielzahl von kühlmittelsammelkanälen parallel zur stapelachse | |
EP2263279B1 (de) | Gasverteilerfeldplatte mit verbesserter gasverteilung für eine brennstoffzelle und eine solche enthaltende brennstoffzelle | |
DE19712864A1 (de) | Brennstoffzellenanordnung mit internen und externen Gasverteilungsvorrichtungen | |
WO2016030095A1 (de) | Bipolarplatte und brennstoffzelle | |
WO2009056272A1 (de) | Brennstoffzellenanordnung | |
DE102021111101A1 (de) | Bipolarplatte für eine Brennstoffzelle | |
DE102006058293B4 (de) | Brennstoffzellenstapel | |
DE102016225441B4 (de) | Brennstoffzellenstapel | |
DE102006058294A1 (de) | Wiederholeinheit für einen Brennstoffzellenstapel und Bipolarplatte für eine solche Wiederholeinheit | |
DE102012012255A1 (de) | Brennstoffzellensystem, insbesondere für ein Fahrzeug |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004712477 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006501506 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 2006073374 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10542729 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048048522 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2004712477 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10542729 Country of ref document: US |