DE102009014743A1 - Fuel cell system has low-temperature fuel cell, which is operated with compressed air on cathode side, and liquid is partially supplied to side of heat exchanger from liquid separators, where compressed air flows on other side - Google Patents
Fuel cell system has low-temperature fuel cell, which is operated with compressed air on cathode side, and liquid is partially supplied to side of heat exchanger from liquid separators, where compressed air flows on other side Download PDFInfo
- Publication number
- DE102009014743A1 DE102009014743A1 DE102009014743A DE102009014743A DE102009014743A1 DE 102009014743 A1 DE102009014743 A1 DE 102009014743A1 DE 102009014743 A DE102009014743 A DE 102009014743A DE 102009014743 A DE102009014743 A DE 102009014743A DE 102009014743 A1 DE102009014743 A1 DE 102009014743A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel cell
- liquid
- cell system
- heat exchanger
- compressed air
- 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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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
- H01M8/04111—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
-
- 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
-
- 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
-
- 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
- H01M8/04082—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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- 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
Abstract
Description
Die Erfindung betrifft ein Brennstoffzellensystem mit einer Niedertemperatur-Brennstoffzelle nach der im Oberbegriff von Anspruch 1 näher definierten Art.The The invention relates to a fuel cell system with a low-temperature fuel cell after the type defined in the preamble of claim 1 in more detail.
Aus
der gattungsgemäßen
Der Aufbau zum Verdampfen des flüssigen Produktwassers im Abgas ist vergleichsweise komplex und benötigt über den Kühlkreislauf mehrere Wärmeübergänge zum Eintrag der entsprechenden thermischen Energie in das flüssige Produktwasser. Außerdem wird Wasser in einem Brennstoffzellensystem nicht nur über das Abgas entsorgt, sondern muss gegebenenfalls in flüssiger Form aus den Abgasen abgeschieden werden, beispielsweise um den Eintritt von Tröpfchen in eine Abgasturbine zu verhindern. Auch das so anfallende abgeschiedene Wasser muss an die Umgebung abgegeben werden.Of the Structure for vaporizing the liquid product water in the exhaust gas is comparatively complex and needs about the cooling circuit several heat transfer to the entry of the corresponding thermal energy in the liquid Product water. In addition, water is in a fuel cell system not just disposed of via the exhaust, but must if necessary be deposited in liquid form from the exhaust gases, for example, the entry of droplets into an exhaust gas turbine to prevent. Even the resulting deposited water must be delivered to the environment.
Es ist aus dem allgemeinen Stand der Technik bei Brennstoffzellensystemen, und hier insbesondere bei Brennstoffzellensystemen in Transportmitteln, wie beispielsweise Kraftfahrzeugen, bekannt, dass die von der Brennstoffzelle erzeugte Abwärme im Allgemeinen sehr schwer wegzukühlen ist. Aufgrund der, im Vergleich zu einem Verbrennungsmotor, sehr viel niedrigeren Temperatur einer Brennstoffzelle sind weitaus größere Kühlflächen zum Kühlen der Abwärme einer Brennstoffzelle notwendig, als dies bei einer Verbrennungskraftmaschine der Fall ist. Damit stellt die Kühlung einer Brennstoffzelle, insbesondere in Transportmitteln, immer eine besondere Herausforderung dar.It is from the general state of the art in fuel cell systems, and here especially in fuel cell systems in means of transport, such as automobiles, known to be powered by the fuel cell Generated waste heat is generally very difficult to cool off is. Because of, compared to an internal combustion engine, very much much lower temperature of a fuel cell are much larger Cooling surfaces for cooling the waste heat a fuel cell necessary, as in an internal combustion engine the case is. Thus, the cooling of a fuel cell, especially in means of transport, always a special challenge represents.
Es ist daher die Aufgabe der hier vorliegenden Erfindung, den oben genannten Aufbau dahingehend zu verbessern, dass Wasser, welches im Wasserabscheider an verschiedenen Stellen des Brennstoffzellensystems gesammelt wird, in dampfförmigem Zustand an die Umgebung abgegeben werden kann, und dass außerdem der Kühlkreislauf des Brennstoffzellensystems entlastet wird.It is therefore the object of the present invention, the above mentioned structure to improve that water, which in the water separator at various points of the fuel cell system is collected, in a vaporous state to the environment can be discharged, and that also the cooling circuit the fuel cell system is relieved.
Erfindungsgemäß wird diese Aufgabe durch ein Brennstoffzellensystem mit den Merkmalen im kennzeichnenden Teil des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen des Brennstoffzellensystems sind in den Unteransprüchen beschrieben. Eine vorteilhafte Verwendung des erfindungsgemäßen Brennstoffzellensystems ergibt sich aus Anspruch 10.According to the invention this task by a fuel cell system with the features dissolved in the characterizing part of claim 1. advantageous Embodiments of the fuel cell system are in the subclaims described. An advantageous use of the fuel cell system according to the invention arises from claim 10.
Dadurch, dass die Flüssigkeit aus den Flüssigkeitsabscheidern zumindest teilweise einer Seite eines Wärmetauschers zuführbar ist, welcher auf der anderen Seite von der verdichtenden Luft durchströmt ist, wird Wärme aus der verdichteten Luft direkt in die Flüssigkeit eingetragen. Dadurch kommt es einerseits zu einer Verdampfung der Flüssigkeit bzw. eines Großteils der Flüssigkeit und andererseits wird die nach dem Verdichten sehr heiße Luft durch diese Verdampfung von Flüssigkeit effizient gekühlt. Damit kann entweder ganz auf einen Ladeluftkühler verzichtet werden, oder dieser kann entsprechend entlastet werden, sodass der Kühlkreislauf des Brennstoffzellensystems an sich entlastet wird und mit weniger Kühlfläche auskommt. Andererseits wird das flüssige Wasser aus den Flüssigkeitsabscheidern im Bereich des Wärmetauschers verdampft, und kann danach als Dampf an die Umgebung des Brennstoffzellensystems abgegeben werden.Thereby, that the liquid from the liquid separators at least partially fed to one side of a heat exchanger is, which flows through on the other side of the condensing air is, heat from the compressed air directly into the Liquid entered. This happens on the one hand an evaporation of the liquid or a large part the liquid and on the other hand, after the compression very hot air due to this evaporation of liquid efficiently cooled. This can be waived entirely on a charge air cooler be, or this can be relieved accordingly, so that the Relieves the cooling circuit of the fuel cell system in itself and gets by with less cooling surface. on the other hand the liquid water gets out of the liquid separators evaporates in the area of the heat exchanger, and can thereafter delivered as a vapor to the environment of the fuel cell system become.
Der erfindungsgemäße Aufbau des Brennstoffzellensystems ermöglicht also einerseits eine Entlastung des Kühlkreislaufs des Brennstoffzellensystems und andererseits ein Verdampfen der in den Flüssigkeitsabscheidern gesammelten Flüssigkeit, sodass diese dampfförmig an die Umgebung gelangt und nicht als Flüssigkeit aus dem Brennstoffzellensystem herausläuft.Of the Inventive structure of the fuel cell system So on the one hand allows a relief of the cooling circuit the fuel cell system and on the other hand evaporation of the in the liquid separators collected liquid, so this comes in vaporous form to the environment and not as Liquid from the fuel cell system runs out.
Dies kann insbesondere beim Einsatz in Transportmitteln, wie beispielsweise in Kraftfahrzeugen, Flugzeugen oder dergleichen sinnvoll sein, da in derartigen fahrbaren Transportmitteln der Austritt von Flüssigkeit häufig unerwünscht oder aufgrund gesetzlicher Vorschriften nicht erlaubt ist. Der Grund hierfür liegt häufig in Sicherheitsvorschriften, welche ein Benetzen der Fahrwege mit flüssigem oder bei Temperaturen unterhalb des Gefrierpunkts eventuell sogar gefrierender Flüssigkeit, insbesondere Wasser, verhindern wollen, um andere Verkehrsteilnehmer nicht zu gefährden.This especially when used in means of transport, such as in motor vehicles, aircraft or the like to be useful because in such mobile transport the escape of liquid often unwanted or due to legal Regulations are not allowed. The reason is often in safety regulations, which wetting the routes with liquid or at temperatures below the freezing point of possibly even freezing liquid, especially water, want to prevent other road users not to endanger.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und werden anhand des Ausführungsbeispiels deutlich, welches nachfolgend unter Bezugnahme auf die Figur erläutert wird.Further advantageous embodiments of the invention will become apparent from the Subclaims and are based on the embodiment clearly, which will be explained below with reference to the figure becomes.
Die einzige beigefügte Figur zeigt eine schematische Darstellung eines Brennstoffzellensystems.The only attached figure shows a schematic representation a fuel cell system.
In
der einzigen beigefügten Figur ist ein Brennstoffzellensystem
Die
Versorgung des Kathodenbereichs
Der
Anodenbereich
Ferner
weist das Brennstoffzellensystem
In
dem Brennstoffzellensystem
Der
Flüssigkeitsabscheider
Der
letzte hier dargestellte Flüssigkeitsabscheider
Jeder
der Flüssigkeitsabscheider
In
dem Wärmetauscher
Außerdem
wird durch das Verdampfen der Flüssigkeit im Wärmetauscher
Der
Wärmetauscher
Je
nach anfallender Menge an abgeschiedener Flüssigkeit wäre
es auch denkbar, auf den Ladeluftkühler
Wenn über
einen Zwischenspeicher
Insbesondere
im Bereich des Flüssigkeitsabscheiders
Grundsätzlich
ist dieser Aufbau des Brennstoffzellensystems
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102006043573 A1 [0002] - DE 102006043573 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009014743A DE102009014743A1 (en) | 2009-03-25 | 2009-03-25 | Fuel cell system has low-temperature fuel cell, which is operated with compressed air on cathode side, and liquid is partially supplied to side of heat exchanger from liquid separators, where compressed air flows on other side |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009014743A DE102009014743A1 (en) | 2009-03-25 | 2009-03-25 | Fuel cell system has low-temperature fuel cell, which is operated with compressed air on cathode side, and liquid is partially supplied to side of heat exchanger from liquid separators, where compressed air flows on other side |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009014743A1 true DE102009014743A1 (en) | 2010-09-30 |
Family
ID=42664021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009014743A Withdrawn DE102009014743A1 (en) | 2009-03-25 | 2009-03-25 | Fuel cell system has low-temperature fuel cell, which is operated with compressed air on cathode side, and liquid is partially supplied to side of heat exchanger from liquid separators, where compressed air flows on other side |
Country Status (1)
Country | Link |
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DE (1) | DE102009014743A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2472660A1 (en) * | 2010-12-29 | 2012-07-04 | Robert Bosch GmbH | Fuel cell system |
DE102012014110A1 (en) | 2012-07-17 | 2014-01-23 | Daimler Ag | The fuel cell system |
DE102012018874A1 (en) | 2012-09-25 | 2014-03-27 | Daimler Ag | The fuel cell system |
WO2020182917A1 (en) * | 2019-03-13 | 2020-09-17 | Vitesco Technologies GmbH | Improved fuel-cell heat management |
DE102020207747A1 (en) | 2020-06-23 | 2021-12-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat transfer in the cathode path of a fuel cell system by means of evaporation / condensation of product water |
DE102020207746A1 (en) | 2020-06-23 | 2021-12-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat transfer in the cathode path of a fuel cell system by means of evaporation / condensation of product water |
DE102014202663B4 (en) | 2014-02-13 | 2022-08-11 | Bayerische Motoren Werke Aktiengesellschaft | Fuel cell system with thermal recuperation in the cryogenic hydrogen system |
DE102021207794A1 (en) | 2021-07-21 | 2023-01-26 | Mahle International Gmbh | Fuel cell device and its use in a motor vehicle |
DE102021207807A1 (en) | 2021-07-21 | 2023-01-26 | Mahle International Gmbh | fuel cell device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043573A1 (en) | 2006-09-16 | 2008-03-27 | Daimler Ag | Liquid water discharge decreasing method for fuel cell system, involves cooling fuel cell by using cooling agent in cooling circuit, and heating damp exhaust gas before discharging from fuel cell system by cooling agent |
-
2009
- 2009-03-25 DE DE102009014743A patent/DE102009014743A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043573A1 (en) | 2006-09-16 | 2008-03-27 | Daimler Ag | Liquid water discharge decreasing method for fuel cell system, involves cooling fuel cell by using cooling agent in cooling circuit, and heating damp exhaust gas before discharging from fuel cell system by cooling agent |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2472660A1 (en) * | 2010-12-29 | 2012-07-04 | Robert Bosch GmbH | Fuel cell system |
DE102012014110A1 (en) | 2012-07-17 | 2014-01-23 | Daimler Ag | The fuel cell system |
WO2014012615A1 (en) | 2012-07-17 | 2014-01-23 | Daimler Ag | Fuel cell system |
DE102012018874A1 (en) | 2012-09-25 | 2014-03-27 | Daimler Ag | The fuel cell system |
WO2014048525A1 (en) | 2012-09-25 | 2014-04-03 | Daimler Ag | Fuel cell system |
DE102014202663B4 (en) | 2014-02-13 | 2022-08-11 | Bayerische Motoren Werke Aktiengesellschaft | Fuel cell system with thermal recuperation in the cryogenic hydrogen system |
WO2020182917A1 (en) * | 2019-03-13 | 2020-09-17 | Vitesco Technologies GmbH | Improved fuel-cell heat management |
DE102020207747A1 (en) | 2020-06-23 | 2021-12-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat transfer in the cathode path of a fuel cell system by means of evaporation / condensation of product water |
DE102020207746A1 (en) | 2020-06-23 | 2021-12-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat transfer in the cathode path of a fuel cell system by means of evaporation / condensation of product water |
DE102021207794A1 (en) | 2021-07-21 | 2023-01-26 | Mahle International Gmbh | Fuel cell device and its use in a motor vehicle |
DE102021207807A1 (en) | 2021-07-21 | 2023-01-26 | Mahle International Gmbh | fuel cell device |
US11929527B2 (en) | 2021-07-21 | 2024-03-12 | Mahle International Gmbh | Fuel device and the use thereof in a motor vehicle |
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Owner name: DAIMLER AG, DE Free format text: FORMER OWNERS: DAIMLER AG, 70327 STUTTGART, DE; FORD GLOBAL TECHNOLOGIES, LLC, DEARBORN, MICH., US Effective date: 20111107 Owner name: DAIMLER AG, DE Free format text: FORMER OWNER: DAIMLER AG, FORD GLOBAL TECHNOLOGIES, LLC, , US Effective date: 20111107 |
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