DE10250759A1 - Fuel cell arrangement for converting chemical to electrical energy and heat has cooling channels, bipolar plates, and feed and removal channels provided with electrically non-conducting coating - Google Patents
Fuel cell arrangement for converting chemical to electrical energy and heat has cooling channels, bipolar plates, and feed and removal channels provided with electrically non-conducting coating Download PDFInfo
- Publication number
- DE10250759A1 DE10250759A1 DE10250759A DE10250759A DE10250759A1 DE 10250759 A1 DE10250759 A1 DE 10250759A1 DE 10250759 A DE10250759 A DE 10250759A DE 10250759 A DE10250759 A DE 10250759A DE 10250759 A1 DE10250759 A1 DE 10250759A1
- Authority
- DE
- Germany
- Prior art keywords
- channels
- fuel cell
- bipolar plates
- feed
- cell arrangement
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 title claims abstract description 12
- 238000000576 coating method Methods 0.000 title claims abstract description 12
- 239000000126 substance Substances 0.000 title 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 229920000867 polyelectrolyte Polymers 0.000 claims abstract description 8
- 239000003570 air Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000003575 carbonaceous material Substances 0.000 claims abstract 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Fuel Cell (AREA)
Abstract
Description
Die Endung betrifft eine Brennstoftzellenanordnung
nach dem Oberbegriff des Patentanspruches
Brennstoffzellen erzeugen bei der Reaktion von Wasserstoff oder anderen kohlenwasserstoffhaltigen Brennstoffen mit Luft bzw. Sauerstoff elektrischen Strom und Wärme. Eine Brennstoffzellenanordnung besteht daher aus mindestens einer einzelnen Brennstoffzelle mit einer Polyelektrolytmembran, sowie mindestens zwei der Polyelektrolytmembran zugeordneten Bipolarplatten. Diese sind insbesondere aus gut leitenden Werkstoffen, zum Beispiel Kohlenstoff, hergestellt und besitzen auf einer Seite Brennstoff-, Luft- oder Sauerstoffzufuhrkanäle und auf der anderen Seite Kühlkanäle. Dabei können Brennstoftzellensysteme auch aus mehreren im Verbund zusammengeschalteten Einzelzellen bestehen und als sogenannte Stacks aufgebaut sein. Deshalb weist eine Brennstoffzellenanordnung zentrale Zu- und Abfuhrkanäle bzw. -anschlüsse für ein gasförmiges oder flüssiges Kühlmedium, den Brennstoff, die Verbrennungsluft oder den Sauerstoff auf.Generate fuel cells at Reaction of hydrogen or other hydrocarbonaceous Fuels with air or oxygen, electrical power and heat. A Fuel cell arrangement therefore consists of at least one individual one Fuel cell with a polyelectrolyte membrane, and at least two bipolar plates assigned to the polyelectrolyte membrane. This are especially made of highly conductive materials, for example carbon, manufactured and have on one side fuel, air or Oxygen supply channels and cooling channels on the other side. there can fuel cell systems also consist of several interconnected individual cells and be constructed as so-called stacks. Therefore, a fuel cell assembly has central supply and discharge channels or connections for a gaseous or liquid Cooling medium, the fuel, the combustion air or the oxygen.
Bei gattungsgemäßen Brennstoffzellenanordnungen wird üblicherweise deionisiertes Wasser als Kühlmedium in den feingliedrigen Kühlkanälen der Bipolarplatten eingesetzt. Da alle Kühlkanäle miteinander verbunden sind, ist das deionisierte Wasser wichtig, um ein Ausgleich der jeweiligen Spannungspotentiale der Einzelzellen über das Wasser zu verhindern. Die Aufbereitung des deionisierten Wassers ist allerdings sehr aufwändig und mit einem relativ hohen Wartungsaufwand verbunden. Zudem werden bei der Deionisation spezielle Werkstoffe eingesetzt, die möglicherweise bei höheren Kühlwassertemperaturen irreversibel beschädigt werden können.With generic fuel cell arrangements is usually deionized water as cooling medium in the delicate cooling channels of the Bipolar plates used. Since all cooling channels are connected to each other, the deionized water is important in order to balance the respective To prevent voltage potential of the individual cells over the water. The treatment of the deionized water is very complex and associated with a relatively high maintenance effort. In addition, at Deionization uses special materials that may at higher Cooling water temperatures irreversibly damaged can be.
Der Erfindung liegt die Aufgabe zugrunde, eine optimierte Brennstoffzellenanordnung zu schaffen.The invention has for its object a to create optimized fuel cell arrangement.
Erfindungsgemäß wird dies mit den Merkmalen
des Patentanspruches
Die Brennstoffzellenanordnung ist dadurch gekennzeichnet, dass die Kühlkanäle der Bipolarplatten sowie die Zu- und Abfuhrkanäle mit einer elektrisch nicht leitenden Beschichtung versehen sind. Es reicht aus, wenn die Beschichtung die Oberfläche der Kühlkanäle und der Zu- und Abfuhrkanäle durchgehend bedeckt.The fuel cell assembly is characterized in that the cooling channels of the bipolar plates as well the supply and discharge channels are provided with an electrically non-conductive coating. It is sufficient if the coating runs continuously through the surface of the cooling channels and the supply and discharge channels covered.
Für einen guten Wärmeübergang aus den Bipolarplatten an das Kühlmedium sollte die Beschichtung der Kühlkanäle der Bipolarplatten eine gute Wärmeleitfähigkeit besitzen. Vorzugsweise kommt für die Beschichtung der Kühlkanäle der Bipolarplatten sowie der Zu- und Abfuhrkanäle ein keramisches Material oder ein Kunststoff zum Einsatz. Damit kann der Wärmeübergang zusätzlich positiv durch die Gestaltung der Oberfläche beeinflusst werden, wenn beispielsweise durch eine raue oder feinporige Oberflächenstruktur Turbulenzen in den oberflächennahen Bereichen des Kühlmittelstromes erzeugt werden.For good heat transfer from the bipolar plates to the cooling medium should the coating of the cooling channels of the bipolar plates good thermal conductivity have. Preferably comes for the coating of the cooling channels of the bipolar plates as well as the feed and discharge channels a ceramic material or a plastic is used. In order to can heat transfer additionally can be positively influenced by the design of the surface, for example due to a rough or fine-pored surface structure the near-surface Areas of the coolant flow be generated.
Mit der erfindungsgemäßen Anordnung wird es möglich, auf deionisiertes Wasser zur Kühlung eines Brennstoffzellensystems zu verzichten, und es ist dadurch die Trennung der unabhängigen Spannungspotentiale der Einzelzellen voneinander gewährleistet. Sämtliche Aufbereitungseinrichtungen für deionisiertes Wasser können entfallen und es wird eine größere Betriebsssicherheit bei höheren Kühlwassertemperaturen erreicht.With the arrangement according to the invention will it be possible on deionized water for cooling to do without a fuel cell system, and it is because of it the separation of the independent Voltage potentials of the individual cells guaranteed from each other. All Processing facilities for deionized water can omitted and there will be greater operational reliability at higher Cooling water temperatures reached.
Die Zeichnung stellt ein Ausführungsbeispiel der Erfindung dar. Es zeigt eine Brennstoffzellenanordnung:The drawing represents an embodiment of the Invention shows. It shows a fuel cell arrangement:
Eine Brennstoffzellenanordnung besteht
im Wesentlichen aus mindestens einer Polyelektrolytmembran
Erfindungsgemäß sind die Oberflächen der Kühlkanäle
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10250759A DE10250759A1 (en) | 2002-10-31 | 2002-10-31 | Fuel cell arrangement for converting chemical to electrical energy and heat has cooling channels, bipolar plates, and feed and removal channels provided with electrically non-conducting coating |
| DE10300581A DE10300581A1 (en) | 2002-10-31 | 2003-01-10 | Fuel cells have fuel and cooling channels coated with non electrically conducting fluid that hardens on heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10250759A DE10250759A1 (en) | 2002-10-31 | 2002-10-31 | Fuel cell arrangement for converting chemical to electrical energy and heat has cooling channels, bipolar plates, and feed and removal channels provided with electrically non-conducting coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10250759A1 true DE10250759A1 (en) | 2004-05-19 |
Family
ID=32115021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10250759A Ceased DE10250759A1 (en) | 2002-10-31 | 2002-10-31 | Fuel cell arrangement for converting chemical to electrical energy and heat has cooling channels, bipolar plates, and feed and removal channels provided with electrically non-conducting coating |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10250759A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095926A3 (en) * | 2005-03-10 | 2007-02-22 | Toyota Motor Co Ltd | Air-cooled fuel cell system |
| FR3059473A1 (en) * | 2016-11-25 | 2018-06-01 | Valeo Systemes Thermiques | FUEL CELL WITH INTEGRATED COOLING CIRCUIT AND METHOD FOR MANUFACTURING THE SAME |
| DE102017206869A1 (en) * | 2017-04-24 | 2018-10-25 | Bayerische Motoren Werke Aktiengesellschaft | Cooling channel for a fuel cell, fuel cell and method for producing a cooling channel |
| WO2023203111A2 (en) | 2022-04-20 | 2023-10-26 | Unicorn Energy AG | Fluid distribution strip for a fuel cell, fuel cell kit and fuel cell component |
| DE102023112965A1 (en) | 2023-05-17 | 2024-11-21 | Schaeffler Technologies AG & Co. KG | Bipolar plate for an electrochemical system and method for producing a bipolar plate |
-
2002
- 2002-10-31 DE DE10250759A patent/DE10250759A1/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095926A3 (en) * | 2005-03-10 | 2007-02-22 | Toyota Motor Co Ltd | Air-cooled fuel cell system |
| FR3059473A1 (en) * | 2016-11-25 | 2018-06-01 | Valeo Systemes Thermiques | FUEL CELL WITH INTEGRATED COOLING CIRCUIT AND METHOD FOR MANUFACTURING THE SAME |
| DE102017206869A1 (en) * | 2017-04-24 | 2018-10-25 | Bayerische Motoren Werke Aktiengesellschaft | Cooling channel for a fuel cell, fuel cell and method for producing a cooling channel |
| WO2023203111A2 (en) | 2022-04-20 | 2023-10-26 | Unicorn Energy AG | Fluid distribution strip for a fuel cell, fuel cell kit and fuel cell component |
| DE102022109562A1 (en) | 2022-04-20 | 2023-10-26 | Unicorn Energy AG | Fluid distribution strip for a fuel cell, fuel cell kit and fuel cell component |
| DE102023112965A1 (en) | 2023-05-17 | 2024-11-21 | Schaeffler Technologies AG & Co. KG | Bipolar plate for an electrochemical system and method for producing a bipolar plate |
| DE102023112965B4 (en) | 2023-05-17 | 2025-03-27 | Schaeffler Technologies AG & Co. KG | Method for producing a bipolar plate and bipolar plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: BBT THERMOTECHNIK GMBH, 35576 WETZLAR, DE |
|
| 8127 | New person/name/address of the applicant |
Owner name: ROBERT BOSCH GMBH, 70469 STUTTGART, DE |
|
| 8131 | Rejection |