DE102013202783A1 - PEM fuel cell system for vehicle, has tank for storing fuel, where fuel taken out from tank is guided by heat exchanger that is flowed-through by heat carrier medium, which passes through condenser through which further exhaust gas flows - Google Patents
PEM fuel cell system for vehicle, has tank for storing fuel, where fuel taken out from tank is guided by heat exchanger that is flowed-through by heat carrier medium, which passes through condenser through which further exhaust gas flows Download PDFInfo
- Publication number
- DE102013202783A1 DE102013202783A1 DE201310202783 DE102013202783A DE102013202783A1 DE 102013202783 A1 DE102013202783 A1 DE 102013202783A1 DE 201310202783 DE201310202783 DE 201310202783 DE 102013202783 A DE102013202783 A DE 102013202783A DE 102013202783 A1 DE102013202783 A1 DE 102013202783A1
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- Germany
- Prior art keywords
- fuel cell
- fuel
- tank
- exhaust gas
- heat exchanger
- 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.)
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- 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
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- 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
- H01M8/04029—Heat exchange using liquids
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- 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
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
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- 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
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
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- 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
- H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
Description
Die Erfindung betrifft ein Brennstoffzellensystem mit einem Tank, in dem der zur Verbrennung mit Prozessluft in einer Brennstoffzelle vorgesehene Brennstoff kalt, insbesondere tiefkalt gespeichert wird und wobei ein Teil der damit zur Verfügung stehenden Kälte zur Kühlung der Brennstoffzelle verwendet wird. Zum Stand der Technik wird auf die
Insbesondere Brennstoffzellensysteme mit PEM-Brennstoffzellen müssen auf einen Temperaturbereich unter 100°C gekühlt werden, wofür entweder ein Kühlkreislauf mit einem geeigneten flüssigen Kühlmittel vorgesehen ist, welches Wärme in einem Umgebungsluft-Kühlmittelwärmetauscher an die Umgebung abgibt (vgl. bspw. die o. g.
Um zu vermeiden, dass für das soeben genannte Auskondensieren des Wassers ein übermäßig großer Wärmetauscher (als „Kondensator”) benötigt wird, der möglicherweise in einem Kraftfahrzeug, welches mit einem Brennstoffzellensystem zur Bereitstellung von elektrischer Energie für das Fzg.-Antriebssystem ausgerüstet ist, nicht sinnvoll untergebracht werden kann, ist es bereits bekannt, im „weitesten Sinne” den in einem Speicher enthaltenen Brennstoff zum Auskondensieren von Wasser aus dem Brennstoffzellen-Abgas zu nutzen, vgl. bspw. die eingangs zweitgenannte
Aus der bereits genannten
Hiermit soll nun eine weitere günstige Möglichkeit zur Kühlung eines Brennstoffzellensystems nach dem Oberbegriff des Anspruchs 1 aufgezeigt werden (= Aufgabe der vorliegenden Erfindung).Hereby is now a further favorable possibility for cooling a fuel cell system according to the preamble of claim 1 are shown (= object of the present invention).
Die Lösung dieser Aufgabe ist dadurch gekennzeichnet, dass die Brennstoffzelle durch der Prozessluft beigemengtes Wasser gekühlt wird, welches durch Kondensation aus dem Abgas der Brennstoffzelle gewonnen wird, wobei der aus dem Tank entnommene Brennstoff durch einen weiterhin von einem Wärmeträgermittel durchströmten Wärmetauscher geführt ist, welches Wärmeträgermittel danach durch einen Kondensator gelangt, durch den weiterhin Abgas der Brennstoffzelle strömt. Vorteilhafte Aus- und Weiterbildungen sind Inhalt der Unteransprüche.The solution to this problem is characterized in that the fuel cell is cooled by the process air added water, which is obtained by condensation from the exhaust gas of the fuel cell, wherein the fuel removed from the tank is guided by a further flowed through by a heat transfer medium heat exchanger, which heat transfer medium thereafter passed through a condenser through which exhaust gas of the fuel cell continues to flow. Advantageous embodiments and further developments are content of the dependent claims.
Für die grundsätzlich bekannte Kühlung einer insbesondere PEM-Brennstoffzelle über der Prozessluft zugegebenes Wasser mit Gewinnung dieses Wassers durch Auskondensieren aus dem Brennstoffzellen-Abgas wird vorgeschlagen, für dieses Auskondensieren einen Teil der Kälteenergie des kryogen oder zumindest tiefkalt gespeicherten Brennstoffs der Brennstoffzelle zu nutzen. Aus Sicherheitsgründen sollte jedoch der Abgasstrom der Brennstoffzelle ausreichend weit vom Brennstoffsystem entfernt sein, weshalb die Zwischenschaltung eines Wärmeträgermittels, bei dem es sich im weitesten Sinne um Wasser und im speziellen um ein geeignetes Kühlmittel handeln kann, welches auch im Kühlkreislauf einer flüssigkeitsgekühlten Brennstoffzelle oder einer Brennkraftmaschine Verwendung findet, vorgeschlagen wird.For the basically known cooling of a particular PEM fuel cell above the process air added water with recovery of this water by condensation from the fuel cell exhaust gas is proposed to use for this Auskondensieren a portion of the cryogenic energy of the cryogenically or at least cryogenic stored fuel of the fuel cell. For safety reasons, however, the exhaust stream of the fuel cell should be sufficiently far away from the fuel system, which is why the interposition of a heat transfer medium, which in the broadest sense may be water and in particular a suitable coolant, which also in the cooling circuit of a liquid-cooled fuel cell or an internal combustion engine Use is proposed.
Mit der Weiterbildung nach Anspruch 2 ist es möglich, gezielt eine bestimmte Wärmemenge in den Tank, in welchem der Brennstoff kryogen oder tiefkalt gespeichert wird, einzubringen, was in der eingangs weiterhin genannten nicht vorveröffentlichten
Vorzugsweise wird das besagte Wärmeträgermittel weiterhin durch einen von der Umgebungsluft durchströmten Kühler (= Umgebungsluft-Wärmetauscher) geführt, da die zur Verfügung stehende Kälteenergie des tiefkalt gespeicherten Brennstoffs üblicherweise nicht ausreichend ist. Um dabei die Ausbeute von aus dem Brennstoffzellen-Abgas auskondensiertem Wasser zu erhöhen, kann neben dem unter Zwischenschaltung des genannten Wärmeträgermittels über die Kälteenergie des Brennstoffs gekühlten ersten Kondensator ein zweiter vom Abgas der Brennstoffzelle durchströmter Kondensator vorgesehen sein, der von einem Teilstrom des besagten Wärmeträgermittels durchströmt ist, welcher am vom aus dem Tank entnommenen Brennstoff durchströmten Wärmetauscher vorbei geführt ist. Dabei wird im Hinblick auf das jeweils zur Verfügung stehende Kältepotential vorgeschlagen, das Brennstoffzellen-Abgas zunächst durch den zweiten Kondensator und daraufhin durch den ersten Kondensator, durch den mit dem Brennstoff im Wärmetausch stehendes Wärmeträgermittel geführt ist, zu führen. Preferably, the said heat transfer medium is further guided by a through-flow of the ambient air cooler (= ambient air heat exchanger), since the available cooling energy of the cryogenic stored fuel is usually not sufficient. In order to increase the yield of water condensed out of the fuel cell exhaust gas, a second condenser through which the exhaust gas of the fuel cell flows can be provided in addition to the first condenser cooled by interposing said heat transfer medium via the cooling energy of the fuel. The first condenser flows through a partial flow of said heat transfer medium is, which is passed on the flowed through by the tank from the fuel flowed through the heat exchanger. In this case, it is proposed with regard to the respectively available cooling potential, the fuel cell exhaust gas first through the second capacitor and then through the first capacitor, is guided by the standing in heat exchange with the fuel heat transfer medium.
Die beigefügte Figur zeigt in einer Prinzipdarstellung ein Ausführungsbeispiel der vorliegenden Erfindung. Dabei ist mit der Bezugsziffer
Mit Brennstoff (= Wasserstoff) versorgt wird das Brennstoffzellensystem
Weiterer Bestandteil des Wärmeträgerkreislaufs
Bereits erwähnt wurden die vorliegend beiden in den Wärmeträgerkreislauf
Ein erfindungsgemäßes Brennstoffzellensystem zeichnet sich durch hohen Kühl-Wirkungsgrad und individuelle Einstellbarkeit aus, wobei durchaus eine Vielzahl von Details abweichend von obigen Erläuterungen gestaltet sein kann, ohne den Inhalt der Patentansprüche zu verlassen. An inventive fuel cell system is characterized by high cooling efficiency and individual adjustability, with quite a variety of details may be designed differently from the above explanations, without departing from the content of the claims.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 10055106 B4 [0001, 0002, 0004] DE 10055106 B4 [0001, 0002, 0004]
- DE 102006020393 B4 [0001, 0003] DE 102006020393 B4 [0001, 0003]
- DE 102012204819 [0001, 0008, 0011] DE 102012204819 [0001, 0008, 0011]
- DE 102011017206 A1 [0004] DE 102011017206 A1 [0004]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310202783 DE102013202783A1 (en) | 2013-02-20 | 2013-02-20 | PEM fuel cell system for vehicle, has tank for storing fuel, where fuel taken out from tank is guided by heat exchanger that is flowed-through by heat carrier medium, which passes through condenser through which further exhaust gas flows |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310202783 DE102013202783A1 (en) | 2013-02-20 | 2013-02-20 | PEM fuel cell system for vehicle, has tank for storing fuel, where fuel taken out from tank is guided by heat exchanger that is flowed-through by heat carrier medium, which passes through condenser through which further exhaust gas flows |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102013202783A1 true DE102013202783A1 (en) | 2014-08-21 |
Family
ID=51263904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201310202783 Withdrawn DE102013202783A1 (en) | 2013-02-20 | 2013-02-20 | PEM fuel cell system for vehicle, has tank for storing fuel, where fuel taken out from tank is guided by heat exchanger that is flowed-through by heat carrier medium, which passes through condenser through which further exhaust gas flows |
Country Status (1)
Country | Link |
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DE (1) | DE102013202783A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055106B4 (en) | 2000-11-07 | 2006-07-06 | Nucellsys Gmbh | The fuel cell system |
DE102006020393B4 (en) | 2006-04-28 | 2008-07-03 | Daimler Ag | Fuel cell system with a hydrogen storage and method for cooling a fuel cell |
DE102011017206A1 (en) | 2010-04-20 | 2011-11-10 | Gm Global Technology Operations, Inc. | Method for operating a storage and delivery system for gas |
DE102012204819A1 (en) | 2012-03-26 | 2013-09-26 | Bayerische Motoren Werke Aktiengesellschaft | Operating method for a fuel cell system |
-
2013
- 2013-02-20 DE DE201310202783 patent/DE102013202783A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055106B4 (en) | 2000-11-07 | 2006-07-06 | Nucellsys Gmbh | The fuel cell system |
DE102006020393B4 (en) | 2006-04-28 | 2008-07-03 | Daimler Ag | Fuel cell system with a hydrogen storage and method for cooling a fuel cell |
DE102011017206A1 (en) | 2010-04-20 | 2011-11-10 | Gm Global Technology Operations, Inc. | Method for operating a storage and delivery system for gas |
DE102012204819A1 (en) | 2012-03-26 | 2013-09-26 | Bayerische Motoren Werke Aktiengesellschaft | Operating method for a fuel cell system |
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Legal Events
Date | Code | Title | Description |
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R163 | Identified publications notified | ||
R005 | Application deemed withdrawn due to failure to request examination | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01M0008040000 Ipc: H01M0008040070 |