DE102020205881A1 - Heatable current collecting plate and cell stack with heatable current collecting plate - Google Patents
Heatable current collecting plate and cell stack with heatable current collecting plate Download PDFInfo
- Publication number
- DE102020205881A1 DE102020205881A1 DE102020205881.4A DE102020205881A DE102020205881A1 DE 102020205881 A1 DE102020205881 A1 DE 102020205881A1 DE 102020205881 A DE102020205881 A DE 102020205881A DE 102020205881 A1 DE102020205881 A1 DE 102020205881A1
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- Germany
- Prior art keywords
- current collecting
- collecting plate
- cell stack
- heating element
- plate
- 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.)
- Pending
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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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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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
- H01M8/02—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
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- 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
Die vorliegende Erfindung betrifft eine Stromsammelplatte (5, 6), insbesondere für einen als Brennstoffzellenstapel (1). Die Stromsammelplatte (5, 6) umfasst eine obere Platine (31) und eine untere Platine (32), welche mittels zumindest eines Kontaktbereiches (36) elektrisch verbunden sind. Zwischen den beiden Platinen (31, 32) ist ein Heizelement (33) angeordnet. Das Heizelement (33) ist jeweils durch eine Isolierschicht (34, 35) von der oberen Platine (31) und der unteren Platine (32) elektrisch isoliert.The present invention relates to a current collecting plate (5, 6), in particular for a fuel cell stack (1). The current collecting plate (5, 6) comprises an upper circuit board (31) and a lower circuit board (32), which are electrically connected by means of at least one contact area (36). A heating element (33) is arranged between the two plates (31, 32). The heating element (33) is electrically insulated from the upper plate (31) and the lower plate (32) by an insulating layer (34, 35).
Description
Die vorliegende Erfindung betrifft eine beheizbare Stromsammelplatte und einen Zellenstapel mit einer beheizbaren Stromsammelplatte.The present invention relates to a heatable current collecting plate and a cell stack with a heatable current collecting plate.
Stand der TechnikState of the art
Bei Brennstoffzellensystemen wird in der Regel das Oxidationsmittel Sauerstoff aus der Umgebungsluft benutzt, um in der Brennstoffzelle - in den Einzelzellen - mit Wasserstoff zu Wasser zu reagieren und damit durch elektrochemische Wandlung eine elektrische Leistung zu liefern.In fuel cell systems, the oxidizing agent oxygen from the ambient air is generally used to react in the fuel cell - in the individual cells - with hydrogen to form water and thus to deliver electrical power through electrochemical conversion.
Aus der
Aus der
Aufgabe der vorliegenden Erfindung ist es eine beheizbare Stromsammelplatte bereitzustellen, welche den Wärmehaushalt für einen Zellenstapel - insbesondere im Kaltstartfall - verbessert.The object of the present invention is to provide a heatable current collecting plate which improves the heat balance for a cell stack - in particular in the event of a cold start.
Offenbarung der ErfindungDisclosure of the invention
Dazu umfasst die Stromsammelplatte, welche insbesondere für einen als Brennstoffzellenstapel ausgeführten Zellenstapel verwendet werden kann, eine obere Platine und eine untere Platine. Die beiden Platinen sind mittels zumindest eines Kontaktbereiches elektrisch verbunden. Zwischen den beiden Platinen ist zumindest ein Heizelement angeordnet. Das Heizelement ist jeweils durch eine Isolierschicht von der oberen Platine und der unteren Platine elektrisch isoliert.For this purpose, the current collecting plate, which can be used in particular for a cell stack designed as a fuel cell stack, comprises an upper plate and a lower plate. The two boards are electrically connected by means of at least one contact area. At least one heating element is arranged between the two boards. The heating element is electrically insulated from the upper circuit board and the lower circuit board by an insulating layer.
Dadurch kann eine Heizfolie für die Stromsammelplatte bzw. für die Endplatte eines Zellenstapels entfallen. Die beiden Funktionen „Strom Sammeln“ und „Heizen“ sind somit in eine Bauteil Stromsammelplatte integriert, die Stromsammelplatte ist beheizbar. Ist die Stromsammelplatte in einem Zellenstapel zwischen den Einzelzellen und einer Endplatte verbaut, können die hohen Wärmekapazitäten sowohl der Stromsammelplatte als auch der Endplatte, welche im Kaltstartfall als eine Art Kältepol auf die Einzelzellen wirken, wirkungsvoll ausgeglichen werden. Auch die benachbart zu der Stromsammelplatte angeordneten Einzelzellen können so schnellstmöglich auf Betriebstemperatur gebracht werden.As a result, a heating foil for the current collecting plate or for the end plate of a cell stack can be omitted. The two functions "collecting electricity" and "heating" are thus integrated into one component, the current collecting plate; the current collecting plate can be heated. If the current collecting plate is installed in a cell stack between the individual cells and an end plate, the high heat capacities of both the current collecting plate and the end plate, which act as a kind of cold pole on the individual cells in the event of a cold start, can be effectively compensated. The individual cells arranged adjacent to the current collecting plate can also be brought to operating temperature as quickly as possible.
In vorteilhaften Ausführungen ist das Heizelement als Leiterbahn ausgeführt. Dadurch kann das Heizelement bauraumsparend sehr flach ausgeführt werden. Weiterhin kann es in der Ebene beliebig platziert und gestaltet sein, beispielsweise auch gezielt nahe an Öffnungen für Medienversorgungen herangeführt werden.In advantageous embodiments, the heating element is designed as a conductor track. As a result, the heating element can be made very flat in a space-saving manner. Furthermore, it can be placed and designed in any way in the plane, for example it can also be brought close to openings for media supplies in a targeted manner.
In vorteilhaften Weiterbildungen sind in der Stromsammelplatte Öffnungen für Medienversorgungen ausgebildet. Dabei ist das Heizelement bevorzugt zumindest teilweise die Öffnungen umgebend angeordnet. Dadurch ist das Heizelement in der Lage, die Medien - insbesondere Brennstoff und Oxidationsmittel -, die den Einzelzellen des Zellenstapels zugeführt werden, zu erwärmen. Insbesondere während einer Kaltstartphase des Zellenstapels ist dies sehr vorteilhaft, da so die Einzelzellen sehr schnell auf Betriebstemperatur gebracht und etwaige Eiskristalle sehr schnell aufgetaut werden können.In advantageous developments, openings for media supplies are formed in the current collecting plate. In this case, the heating element is preferably arranged at least partially surrounding the openings. As a result, the heating element is able to heat the media - in particular fuel and oxidizing agent - which are fed to the individual cells of the cell stack. This is very advantageous in particular during a cold start phase of the cell stack, since the individual cells can be brought to operating temperature very quickly and any ice crystals can be thawed very quickly.
Die Erfindung umfasst weiterhin einen Zellenstapel mit mehreren Einzelzellen. Die Einzelzellen sind zwischen zwei Endplatten angeordnet. Zumindest zwischen einer der Endplatten und den Einzelzellen ist eine Stromsammelplatte nach einer der vorhergehenden Ausführungen angeordnet.The invention further comprises a cell stack with a plurality of individual cells. The individual cells are arranged between two end plates. A current collecting plate according to one of the preceding embodiments is arranged at least between one of the end plates and the individual cells.
Die Erfindung umfasst zusätzlich ein Kraftfahrzeug mit dem erfindungsgemäßen als Brennstoffzellenstapel ausgeführten Zellenstapel. Die Einzelzellen sind demzufolge als Brennstoffzellen ausgeführt. Insbesondere für mobile Anwendungen wie ein Kraftfahrzeug ist ein Kaltstartfall sehr relevant; das schnelle Erreichen der Betriebstemperatur und damit auch die durch den Brennstoffzellenstapel bereitgestellte Leistung für den Antrieb des Kraftfahrzeugs ist eine wichtige Anforderung.The invention additionally comprises a motor vehicle with the cell stack according to the invention designed as a fuel cell stack. The individual cells are therefore designed as fuel cells. A cold start case is particularly relevant for mobile applications such as a motor vehicle; Reaching the operating temperature quickly and thus also the power provided by the fuel cell stack for driving the motor vehicle is an important requirement.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt:
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1 schematisch einen aus dem Stand der Technik bekannten Zellenstapel. -
2 schematisch einen weiteren aus dem Stand der Technik bekannten Zellenstapel. -
3 einen Schnitt durch einen Ausschnitt eines erfindungsgemäßen Zellenstapels, wobei nur die wesentlichen Bereiche dargestellt sind. -
4 den Schnitt A-A der3 .
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1 schematically a cell stack known from the prior art. -
2 schematically a further cell stack known from the prior art. -
3 a section through a section of a cell stack according to the invention, only the essential areas being shown. -
4th the section AA of3 .
Der Zellenstapel
Erfindungsgemäß werden nun alternativ zu der Heizfolie
Dazu zeigt
Die Isolierschichten
Durch das Heizelement
Die Heizelemente
In bevorzugten Ausführungen ist das Heizelement
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED 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 was 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 PatentliteraturPatent literature cited
- US 5789091 A [0003, 0013]US 5789091 A [0003, 0013]
- WO 19081866 A1 [0004, 0014]WO 19081866 A1 [0004, 0014]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102020205881.4A DE102020205881A1 (en) | 2020-05-11 | 2020-05-11 | Heatable current collecting plate and cell stack with heatable current collecting plate |
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DE102020205881.4A DE102020205881A1 (en) | 2020-05-11 | 2020-05-11 | Heatable current collecting plate and cell stack with heatable current collecting plate |
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DE102020205881A1 true DE102020205881A1 (en) | 2021-11-11 |
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DE102020205881.4A Pending DE102020205881A1 (en) | 2020-05-11 | 2020-05-11 | Heatable current collecting plate and cell stack with heatable current collecting plate |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5789091A (en) | 1996-11-19 | 1998-08-04 | Ballard Power Systems Inc. | Electrochemical fuel cell stack with compression bands |
US20060141326A1 (en) | 2004-12-28 | 2006-06-29 | Artibise Robert H | Integrated current collector and electrical component plate for a fuel cell stack |
US20170331126A1 (en) | 2015-02-05 | 2017-11-16 | Hanon Systems | End cell heater for fuel cell, and fuel cell including same |
WO2019081866A1 (en) | 2017-10-26 | 2019-05-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Assembly comprising a soec/sofc-type solid oxide stack and a clamping system with an integrated gas superheating system |
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2020
- 2020-05-11 DE DE102020205881.4A patent/DE102020205881A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5789091A (en) | 1996-11-19 | 1998-08-04 | Ballard Power Systems Inc. | Electrochemical fuel cell stack with compression bands |
US5789091C1 (en) | 1996-11-19 | 2001-02-27 | Ballard Power Systems | Electrochemical fuel cell stack with compression bands |
US20060141326A1 (en) | 2004-12-28 | 2006-06-29 | Artibise Robert H | Integrated current collector and electrical component plate for a fuel cell stack |
US20170331126A1 (en) | 2015-02-05 | 2017-11-16 | Hanon Systems | End cell heater for fuel cell, and fuel cell including same |
WO2019081866A1 (en) | 2017-10-26 | 2019-05-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Assembly comprising a soec/sofc-type solid oxide stack and a clamping system with an integrated gas superheating system |
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