EP1618395A1 - Mesure de la distribution de courant/repartition de la chaleur d'une electrode electrochimique - Google Patents

Mesure de la distribution de courant/repartition de la chaleur d'une electrode electrochimique

Info

Publication number
EP1618395A1
EP1618395A1 EP04723899A EP04723899A EP1618395A1 EP 1618395 A1 EP1618395 A1 EP 1618395A1 EP 04723899 A EP04723899 A EP 04723899A EP 04723899 A EP04723899 A EP 04723899A EP 1618395 A1 EP1618395 A1 EP 1618395A1
Authority
EP
European Patent Office
Prior art keywords
measuring device
measuring
current
resistance
elements
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.)
Withdrawn
Application number
EP04723899A
Other languages
German (de)
English (en)
Inventor
Till Kaz
Heinz Sander
Stefan Schönbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP1618395A1 publication Critical patent/EP1618395A1/fr
Withdrawn legal-status Critical Current

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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04574—Current
    • H01M8/04582—Current of the individual fuel cell
    • 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
    • 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
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04552—Voltage of the individual fuel cell
    • 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

  • Measuring device for measuring the local current distribution / heat distribution on an electrochemical electrode
  • the invention relates to a measuring device for measuring the local current distribution / heat distribution on an electrochemical electrode, comprising a plurality of measuring segments, one measuring segment having a resistance element and at least one current conduction element, via which the electrochemical electrode can be contacted and current is diverted to the associated resistance element.
  • Such a measuring device is known from the unpublished DE 101 51 601 AI.
  • the invention has for its object to provide a measuring device of the type mentioned, which is easy to manufacture.
  • the resistance element assigned to a measuring segment is oriented such that the current flow at the resistance element in in a direction transverse to the direction of current flow on the current conduction element.
  • the measuring device according to the invention can be manufactured in a simple manner, in particular in connection with a multilayer structure, since the resistance elements can be manufactured in a simple manner. For example, they are applied over a wide area using thin-film or thick-film technology.
  • the thickness of the measuring device according to the invention can be kept low or adapted, since the height of the resistance elements in the thickness direction can be kept low, so that the thickness of the measuring device is not determined by the resistance elements themselves.
  • the measuring device can thus be produced by production processes known from printed circuit board technology and in particular produced as a multilayer board.
  • the measuring device which can be integrated into a bipolar contact plate, for example, can be made flat and in particular with a thickness that corresponds to conventional bipolar plates that do not contain a measuring device. As a result, the distance between opposite electrodes need not be changed because of the measurement of the local current distribution or local heat distribution.
  • the resistance elements are oriented essentially parallel to a surface of the measuring device facing the electrochemical electrode. This simplifies the manufacture of the measuring device. In particular, this can be manufactured as a multilayer board (i.e. with a multi-layer structure). Furthermore, there are no particular restrictions on the thickness of the measuring device due to the design of the resistance elements.
  • a measuring segment has a closed contact surface for the electrochemical electrode. Current can then be removed from any point of the electrochemical electrode which is in electrical contact with the contact surface. This ensures a safe measurement.
  • the power line elements are arranged in a grid with respect to the contact surface. As a result, the current absorbed to a certain extent by the contact surface can be safely diverted to an associated resistance element, the resistance of the individual current line elements being able to be kept low.
  • contact surfaces are arranged in a grid on a surface of the measuring device facing the electrochemical electrode. This allows a largely complete range of Measure the surface of the electrochemical electrode with respect to the local current distribution.
  • current-conducting elements which lead away from a surface of the measuring device which faces the electrochemical electrode are designed in such a way that gas-tightness is ensured.
  • they are solid.
  • power line elements are often designed as hollow cylinders through circuit board layers. H.
  • the inner surface is provided with an electrical conductor.
  • a power line element is solid.
  • it can also be a hollow element, the cavity of which is filled in order to produce gas-tightness. This ensures gas tightness, d. H. it is prevented that a reaction gas can flow into the measuring device via the power line elements.
  • a power line element can be manufactured in a simple manner if corresponding recesses and in particular bores are clad or filled with an electrically conductive material such as copper. In the case of cladding, the cavity is filled. This allows a direction of current conduction across the surface to be achieved in a simple manner.
  • the resistance elements can be calibrated with regard to their resistance value. Basically, the resistance elements can have a temperature dependency. If the resistance elements are formed by means of copper layers, then they even have a relatively strong temperature dependence. The current flow can then only be determined from a measured voltage drop if the temperature is known and the corresponding resistance value at this temperature is known. During the calibration process, a defined current is applied to the corresponding resistor, whereby defined temperature conditions prevail, and the voltage drop is determined. The corresponding values are saved. If a voltage drop is then determined during the actual measurement and the temperature is known, then the current flow can also be determined from the tables determined during the calibration process, and thus in turn the local electrode current assigned to each measurement segment.
  • a resistance element has one or more calibration connections, so that the corresponding calibration measurements can be carried out on each resistance element.
  • measuring segments are provided for temperature measurement.
  • These measuring segments can be the actual measuring segments or additional measuring segments which are arranged in particular between the actual measuring segments for local current distribution.
  • the local temperature distribution on the electrochemical electrode can be determined.
  • the appropriate Arrangement between the measuring segments for local current distribution via the temperature measurement measuring segments determine the temperature in a position which receives the resistance elements for the current measurement, in order to determine the relevant resistance value depending on the temperature, in particular from a calibration table. As a result, the temperature influence on the resistance value can be detected, and the current value can in turn be determined with high accuracy.
  • a temperature measurement measuring segment has a resistance element of known temperature characteristic. This allows the temperature to be determined by applying a defined current and by measuring the voltage drop.
  • the temperature measurement measurement segments are advantageously arranged between measurement segments for the current measurement.
  • the measuring accuracy for the current measurement can then be increased, since the temperature influence on the resistance value of the resistance elements can be taken into account.
  • the measuring device has a multilayer structure. It can then be produced using known production processes from multilayer technology.
  • a position is provided in which the resistance elements are arranged.
  • the thickness of this layer is not determined by the thickness of the resistance elements. It is also advantageous if a layer is provided in which current-conducting elements are arranged, which lead to a surface of the measuring device facing the electrochemical electrode. Currents can be derived from a surface via these current conduction elements, ie currents can be derived from the electrode to the resistance elements.
  • a layer is provided which is arranged between the layer with the current-conducting elements which lead to the surface and the layer with the resistance elements, and which comprises current-conducting elements to the resistance elements.
  • a position which comprises lines for calibrating the resistance element.
  • this layer is designed so that conductor tracks are arranged concealed, i. H. do not sit on a surface of the measuring device. This protects them.
  • an outer layer which provides electrical contact with a surface of the measuring device which is opposite the surface which faces the electrochemical electrode to be measured.
  • the electrical circuits can be closed via this position.
  • Such an outer layer can be produced in a simple manner if a contact device, which lies opposite the surface of the measuring device which faces the electrochemical electrode to be measured, is an equipotential surface.
  • Such an equipotential surface can be produced in a simple manner by a coating made of an electrically conductive material or by a plate made of an electrically conductive material. In this way, a current collecting device can be realized in a simple manner, on which the individual current paths are combined. Since electrical conductors are also good heat conductors, good cooling can be achieved via such an equipotential surface. Cooling ducts can also be integrated in a simple manner, in particular when a plate is provided.
  • connection element for the voltage measurement. Via this connection element, which has corresponding contacts, voltage signals can then be tapped and lead to an evaluation device.
  • connection elements can be provided, for example two, which are located on opposite sides of the measuring device. This makes it easier to guide the conductor tracks in the appropriate positions.
  • connection element and in particular separate connection element is provided for a calibration measurement of the resistance elements. This also facilitates the routing of the conductor track.
  • the measuring device according to the invention can be placed in a contact plate and in particular a bipolar plate for arrangement between an adjacent anode and integrate cathode.
  • the adjacent anode and cathode are in particular an adjacent anode and cathode of adjacent fuel cells of a fuel cell stack.
  • the measuring device according to the invention in a gas distribution element, by means of which reaction gas can be fed to an electrochemical electrode. Simultaneous training as a contact plate and gas distribution element is possible. However, it can also be provided that the corresponding electrochemical electrode itself is provided with gas distribution channels. Furthermore, it is possible to integrate the measuring device according to the invention in a gas distribution element which is not arranged between adjacent electrodes, but rather is only assigned to a single electrode.
  • FIG. 1 is a schematic representation of an embodiment of a measuring device according to the invention, which as
  • Contact plate is arranged between an opposite anode and cathode
  • FIG. 2 shows a schematic side sectional view of an exemplary embodiment of a measuring device according to the invention
  • Figure 3 (a) is an enlarged section of a resistance layer
  • FIG. 3 (b) is an enlarged detail view with current line elements (corresponding to area B in accordance with FIG.
  • FIG. 4 shows an enlarged illustration of a resistance element for temperature measurement (corresponding to area C according to FIG. 7);
  • FIGS. 5 to 9 are sectional views in different planes of the measuring device according to FIG. 2, the different sectional views showing different positions with
  • Figure 5 is a sectional view in a first position along the line
  • Figure 6 is a sectional view taken along line 6-6 of Figure 2 corresponding to a second layer
  • FIG. 7 shows a sectional view along the line 7-7 according to FIG. 2 corresponding to a position with resistance elements; 8 shows a sectional view along the line 8-8 according to FIG. 2 corresponding to a position with calibration lines for resistance elements and
  • Figure 9 is a plan view of the measuring device according to Figure 2 in the direction D corresponding to a fifth layer.
  • FIG. 1 An exemplary embodiment of a measuring device according to the invention, which is shown schematically in FIG. 1 and is designated there as a whole by 10, is arranged, for example, as a contact plate (bipolar plate) between a cathode 12 as an electrochemical electrode and an anode 14 as a further electrochemical electrode.
  • a contact plate bipolar plate
  • the cathode 12 and the anode 14 are the adjacent electrodes between adjacent fuel cells of a fuel cell stack.
  • the measuring device 10 can be designed as a contact plate or can be integrated into such a contact plate.
  • the measuring device 10 can additionally or alternatively be designed as a gas distribution element which has gas channels 16, via which there are
  • Reaction gas can be fed to the corresponding electrochemical electrode.
  • the gas distribution element prefferably be a contact plate at the same time
  • gas distribution channels are integrated in the electrochemical electrode, so that the contact plate with the measuring device has no gas distribution function.
  • the local current distribution and, in one variant of an embodiment, also the local heat distribution at the electrochemical electrode to be measured can be determined by the measuring device according to the invention.
  • the measuring device 10 has a surface 18 which faces the electrochemical electrode 12 to be measured and can be brought into electrical contact with it.
  • a plurality of measuring segments 20 are provided for the current measurement, which are distributed over the measuring device 10.
  • Each measuring segment 20 is assigned to a specific surface area of the electrochemical electrode 12 to be measured, and the current can be measured at the assigned area of the electrochemical electrode 12 via the corresponding measuring segment 20.
  • the spatial resolution of the measurement is determined by the number and by the size of the measurement segments 20.
  • a measuring segment 20 has a contact surface 22 (contact surface) for contacting the electrochemical electrode 12.
  • a contact area 22 is, for example, made of a layer of an electrically conductive material such as copper on the surface 18. Adjacent contact areas 22 are spaced apart, ie. H. they are not connected to each other. These contact areas 22 are arranged in a grid which covers the surface 18 with the corresponding gaps between adjacent contact areas 22.
  • the measuring device 10 is preferably constructed in several layers.
  • a first layer 24 comprises the surface 18 with the contact areas 22.
  • a respective contact surface 22 is assigned a plurality of recesses 26, which are filled gas-tight, for example with an electrically conductive material 28. It is also possible to produce the through-contacts by cladding the walls of the recesses 26 with an electrically conductive material, the remaining space is filled gas-tight (the filling material does not have to be electrically conductive here).
  • the recesses 26 are filled with copper.
  • the contact surfaces 22 sit on these filled recesses 26 and. are electrically connected to them.
  • current line elements 30 are formed, by means of which an electrical current can be conducted from the respective contact surfaces 22 through the first layer 24.
  • the current line elements 30 are arranged transversely to the surface 18, so that a current can flow through the first layer 24.
  • a plurality of power line elements 30 is assigned to each contact area 22. It is also possible to assign a separate contact surface to each power line element 30 on the surface 18 (not shown in the drawing).
  • the contact surfaces 22 can be gold-plated. This results in a reduction in the contact resistance to the electrochemical electrode with increased chemical resistance.
  • a measuring segment 20 comprises 8 ⁇ 8 current line elements 30 as plated-through holes, 7 ⁇ 7 measuring segments 20 being provided, for example.
  • a measuring segment 20 has on the surface 18 an area of 7 mm x 7 mm. The part of such a measuring segment 20, which lies in the first layer 24 and is connected to a corresponding contact surface 22 on the surface 18, is shown in FIG. 5 and there provided with the reference number 32.
  • a measuring segment 20 which has a contact surface 22 is assigned a plurality of current line elements 30, in particular arranged in a grid, as plated-through holes, current can be applied over the entire area of the contact surface 22, independently of any integrated gas channels. The discharge of the current through the first layer 24 is ensured.
  • the power line elements 30 are solid or the recesses 26 are filled, gas passage into further layers arranged under the first layer 24 can be prevented.
  • the second layer 34 is followed by a second layer 34.
  • current line elements 30 assigned to a measuring segment 20 are conductively connected to one another via a contact layer 36.
  • the contact layers 36 of adjacent measuring segments 20 are electrically insulated from one another.
  • a single current conducting element 38 leads downwards into an adjacent third layer 40 (FIGS. 2 and 7).
  • Resistance elements 42, 44 (FIGS. 3 (a), 4 and 7) are arranged in the third layer 40.
  • the resistance elements 42 are used for current measurement and the resistance elements 44 are used for temperature measurement.
  • a resistance element 42 which is assigned to a measuring segment 20, is oriented essentially parallel to the surface 18 in the third layer 40 with a direction of current flow which is transverse to the direction of current flow in the current conduction elements 30 and in particular is perpendicular to the direction of current flow through the first layer 24.
  • the thickness of the measuring device 10 transverse to the surface 18 can be kept small or set specifically.
  • the resistance elements 42 are distributed in the third layer 40, for example in a grid, corresponding to the measuring segments 20.
  • a resistance element 42 is coupled to lines 46, 48 via connections 50, 52. These lines 46 run in the third layer 40 to a lateral edge of the measuring device 10. The voltage drop across the respective resistance elements 42 can be measured via them.
  • each resistance element 42 is contacted for current application upwards to the second layer 34 via the current line elements 38. Down to a fourth layer 54, each resistance element 42 is provided with a single current conducting element 56 (FIG. 3 (b)).
  • the current flows through a contact surface 22
  • the current flows through the corresponding current-conducting elements 30 to the associated resistance element 42 of the respective measuring segment 20 in a direction that is transverse to the surface 18.
  • the current then flows between the resistance element 42 the corresponding coupling points to the current conduction element 38 and the current conduction element 56 through the resistance element 42 with a current flow direction which is transverse to the current flow direction in the current conduction elements 30.
  • the falling voltage can be tapped off at the connections 50, 52.
  • the resistance elements 44 are arranged between corresponding resistance elements 42, which are assigned to the respective measuring segments 20. Thereby, temperature measurement measurement segments 57 are arranged between the measurement segments 20 for the current measurement. These have a larger area for the current flow than the resistance elements 42. They are used for temperature measurement by externally applying a defined current and measuring the voltage drop in each case, the temperature dependence of the resistance of the resistance elements 44 being known, so that from an electrical measurement the temperature can be determined.
  • a resistance element 44 is formed between connecting lines 58, 60, as shown in FIG. 4.
  • a current can be sent through the resistance element 44 via these connecting lines 58, 60, which run outwards in the third layer 40.
  • the voltage drop between connections 62, 64 is measured, corresponding lines 56, 68 being provided which lead to the edge of the measuring device 10.
  • These lines 66, 68 run in the third layer 40.
  • a resistance element 44 is, for example, as shown in FIG. 4, meandering with conductor tracks which run between the connections 62 and 64. In this way, the temperature can be determined in the third layer 40 via a voltage measurement.
  • a plurality of resistance elements 44 are connected in series in the third layer 40. This simplifies the power supply because fewer external connections are required.
  • the resistance elements 44 are arranged between the resistance elements 42 of the corresponding measuring segments 20 in such a way that they do not interfere with their regular arrangement, while the conductor tracks of the lines 58, 60 and 66, 68 in the corresponding third one Location 40 are performed.
  • a current-conducting element 70 is guided in association with each resistance element 42.
  • the respective current line elements 70 are connected to an equipotential surface 74 forming a fifth layer 72 (FIGS. 2 and 9). This is, for example, a copper plate or a copper layer. The current is passed on via this equipotential surface 74, which forms a contact device.
  • the fourth layer 54 there are also current conduction elements 76 running transversely to the surface 18 (FIGS. 2, 3 (b), 8), each of which is assigned to a measuring segment 20 and is connected to the respective resistance element 42. Such a current conduction element 76 is also coupled to a conductor track 78, which runs in the fourth layer 54 to one side of the measuring device 10.
  • the coupling point of a current conduction element 76 to a resistance element 42 is a calibration connection 80.
  • the calibration connection 80 i. H.
  • a defined current is sent through the resistance element 42.
  • the current flow takes place through the conductor track 78 via the current conducting element 76 through the resistance element 42 and then through the current conducting elements 56 and 70 to the equipotential surface 74 for closing the circuit.
  • the falling voltage is tapped at the connections 50, 52.
  • the resistance value at defined temperatures can then be determined in preparation for the measurement.
  • the corresponding values are stored in a table, for example, depending on the temperature during the calibration process.
  • the temperature is then determined via the resistance elements 44.
  • the current flowing through the resistance elements 42 can then be determined by taking into account the stored resistance values at the specific temperature, which in turn is supplied by the electrochemical electrode 12.
  • the spatial positioning of the measuring segments 20 with respect to the surface 18 in turn enables the local currents on the electrochemical electrode 12 to be measured, so that the local current distribution on the electrochemical electrode 12 can be determined.
  • the solution according to the invention also makes it possible, if the resistance elements 42 are designed appropriately with a known temperature dependency, to measure the local heat distribution on the electrochemical electrode 12.
  • the resistance elements 44 are used to measure the temperature in the third layer 40 and, as a result, can assign a current value for the current flowing through the corresponding resistance elements 42 with high accuracy from the calibration result.
  • the measuring device 10 is provided with connection elements from which the corresponding voltage values can be tapped.
  • connection elements from which the corresponding voltage values can be tapped.
  • a first connection element 82 and a second connection element 84 are formed on the first layer 24 and the fourth layer 54.
  • the voltage drop which is assigned to the resistance elements 42 of the individual measuring segments 20, can be tapped at corresponding contacts via these connection elements 82, 84.
  • the corresponding voltage signals can then be forwarded to an evaluation device in order to be able to determine the current value from the voltage value via a resistance value from a table at a known temperature.
  • a third connection element 86 (FIG. 9) can also be provided, which is used to calibrate the resistance elements 42. Via this connection element 86, the resistance elements 42 can be subjected to current in a defined manner and the associated voltage drop can be determined in order to be able to record the temperature-dependent resistance characteristic in particular.
  • the multi-layer measuring device 10 is produced by known methods, for example by first producing the first layer 24 and successively forming the second layer 34, the third layer 40 and the fourth layer 54. The fifth layer 72 is then produced.
  • 7 x 7 measuring segments 20 are provided, which are arranged in a square grid. There is a distance of 0.2 mm between adjacent measuring segments.
  • a measuring surface corresponding to a contact surface 22 has an area of 50.2 mm x 50.2 mm.
  • a measuring segment 20 comprises 8 x 8 current line elements 30 in a grid corresponding to a regular square grid with a distance of 0.9 mm.
  • the diameter of a power line element 30 is 0.3 mm.
  • the measuring resistors themselves have a length of 1.9 mm between the connections 50 and 52 in the exemplary embodiment.
  • the width across is 1 mm and the height in the third layer 40 12 ⁇ m.
  • the resistance is 2.73 m ⁇ ; at 70 ° C the resistance is 3.32 m ⁇ .
  • the resistance elements 44 are formed by twelve tracks, which run at a distance of 0.2 mm and are 10 mm long.
  • the measuring device 10 according to the invention is used as follows:
  • the resistance elements 42 are measured via the third connection element 86, in that the voltage drop across the individual resistance elements 42 is measured at a defined temperature and a defined current application. The temperature-dependent resistance values are saved. During the calibration measurement, there is no current flow through the current line elements 30.
  • the measuring device 10 When measuring the electrochemical electrode 12, the measuring device 10 is positioned with its surface 18 on the surface of this electrochemical electrode 12. When current flows, the current is diverted via the contact surfaces 22 through the current-conducting elements 30 through the first layer 24 to the respective resistance elements 42, which are oriented transversely to the current-conducting elements 30. The corresponding voltage drop is measured and the current value assigned to each measuring segment 20 can then be determined from the stored values. This gives the local current distribution at the electrochemical electrode.

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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)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

L'invention vise à mettre au point un dispositif de mesure permettant de mesurer la distribution locale de courant/répartition locale de chaleur au niveau d'une électrode électrochimique, qui soit aisé à produire. Ledit dispositif de mesure comprend une pluralité de segments de mesure, un segment de mesure comportant un élément de résistance et au moins un élément de conduction de courant permettant la mise en contact de l'électrode électromagnétique et une dérivation de courant vers l'élément de résistance correspondant. A cet effet, il est prévu d'orienter l'élément de résistance associé à un segment de mesure, de manière que le courant s'écoule au niveau de cet élément de résistance dans une direction transversale au sens d'écoulement au niveau de l'élément de guidage du courant.
EP04723899A 2003-04-04 2004-03-27 Mesure de la distribution de courant/repartition de la chaleur d'une electrode electrochimique Withdrawn EP1618395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316117A DE10316117B3 (de) 2003-04-04 2003-04-04 Meßvorrichtung zur Messung der lokalen Stromverteilung/Wärmeverteilung an einer elektrochemischen Elektrode
PCT/EP2004/003282 WO2004088334A1 (fr) 2003-04-04 2004-03-27 Mesure de la distribution de courant/repartition de la chaleur d'une electrode electrochimique

Publications (1)

Publication Number Publication Date
EP1618395A1 true EP1618395A1 (fr) 2006-01-25

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EP04723899A Withdrawn EP1618395A1 (fr) 2003-04-04 2004-03-27 Mesure de la distribution de courant/repartition de la chaleur d'une electrode electrochimique

Country Status (3)

Country Link
EP (1) EP1618395A1 (fr)
DE (1) DE10316117B3 (fr)
WO (1) WO2004088334A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100716079B1 (ko) * 2000-11-13 2007-05-08 바스프 악티엔게젤샤프트 다염기 산의 에스테르의 제조 방법

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004014114A1 (de) * 2004-03-23 2005-10-20 Forschungszentrum Juelich Gmbh Vorrichtung zur Bestimmung der Stromdichteverteilung in Brennstoffzellen
JP2005302498A (ja) * 2004-04-09 2005-10-27 Espec Corp 燃料電池電流分布測定装置及び燃料電池電流分布測定方法
JP4854237B2 (ja) 2004-10-22 2012-01-18 日産自動車株式会社 固体電解質型燃料電池及びスタック構造体
WO2006067971A2 (fr) * 2004-12-21 2006-06-29 Nissan Motor Co., Ltd. Procede de demarrage pour une structure de pile a combustible, procede de commande de la temperature pour une structure de pile a combustible et structure de pile a combustible
DE102007034699A1 (de) 2007-07-16 2009-01-22 Deutsches Zentrum für Luft- und Raumfahrt e.V. Messvorrichtung und Verfahren zur Ermittlung des elektrischen Potentials und/oder der Stromdichte an einer Elektrode
US9257724B2 (en) 2011-12-23 2016-02-09 Infineon Technologies Ag Reaction chamber arrangement and a method for forming a reaction chamber arrangement
DE102017109233A1 (de) 2017-04-19 2018-10-25 Deutsches Zentrum für Luft- und Raumfahrt e.V. Segmentierte Elektrodeneinheit, Batterie und Verfahren zum Herstellen einer segmentierten Elektrodeneinheit
CN111540929B (zh) * 2020-05-08 2023-03-24 电子科技大学 一种具有电流与温度矩阵分布在线检测的空冷燃料电池电堆
DE102021208646A1 (de) 2021-08-09 2023-02-09 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zur Messung der Stromdichteverteilung einer Brennstoffzelle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004012282A2 (fr) * 2002-07-26 2004-02-05 General Motors Corporation Circuit de distribution de courant resistif et de temperature in-situ pour pile a combustible

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207259B1 (en) * 1998-11-02 2001-03-27 Kyocera Corporation Wiring board
EP1001666B1 (fr) * 1998-11-09 2006-07-12 Ballard Power Systems Inc. Dispositif de contact électrique pour une pile en combustible
DE10151601B4 (de) * 2001-10-15 2005-03-10 Deutsch Zentr Luft & Raumfahrt Gasverteilungselement, Kontaktplatte und Brennstoffzellenstapel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004012282A2 (fr) * 2002-07-26 2004-02-05 General Motors Corporation Circuit de distribution de courant resistif et de temperature in-situ pour pile a combustible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004088334A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100716079B1 (ko) * 2000-11-13 2007-05-08 바스프 악티엔게젤샤프트 다염기 산의 에스테르의 제조 방법

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