CN103698036A - Device for measuring temperature field distribution of large-area flat-type solid oxide fuel cell - Google Patents
Device for measuring temperature field distribution of large-area flat-type solid oxide fuel cell Download PDFInfo
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- CN103698036A CN103698036A CN201210366142.0A CN201210366142A CN103698036A CN 103698036 A CN103698036 A CN 103698036A CN 201210366142 A CN201210366142 A CN 201210366142A CN 103698036 A CN103698036 A CN 103698036A
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Abstract
The invention discloses a device for measuring temperature field distribution of a large-area flat-type solid oxide fuel cell. The device comprises an air inlet/outlet unit, a flow channel distribution unit, a current collecting unit and a temperature acquisition unit, wherein the air inlet/outlet unit comprises a pair of large-area metal plates (1) and (2) which clamp a battery (7); the metal plates (1) and (2) are provided with a plurality of air channels so as to form air inlet pipelines (3) and (4) and air outlet pipelines (5) and (6); the flow channel distribution unit is positioned between the large-area metal plates (1) and (2) and is used for distributing air flow; the current collecting unit is positioned between the large-area metal plates (1) and (2) and is used for collecting the current of the battery (7); the temperature acquisition unit is arranged on at least one of the large-area metal plates (1) and (2) and is used for acquiring the temperature of the battery (7).
Description
Technical field
The invention belongs to fuel cell technology field, be specifically related to a kind of direct measurement fuel cell, device and assembling and method of operating that especially large-area flat-plate type Solid Oxide Fuel Cell temperature field distributes.
Background technology
Energy conversion apparatus as a kind of clean and effective, Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, SOFC) with its all solid state assembly, corrosion-free, nothing is leaked, hot operation, suitability of fuel is strong, is convenient to the advantages such as Co-generation (efficiency can up to 70～80%), cause the extensive concern of countries in the world, become emphasis and the focus of current fuel cell studies.In actual applications, in order to reach larger electric current and voltage, conventionally SOFC monocell can be connected or is together in parallel by certain mode, be assembled into SOFC pile.Compare with the Solid Oxide Fuel Cell of other structure, flat solid oxide fuel cell energy density is high, and internal resistance loss is little; Flexible structure, gas communication mode is many; Parts are prepared respectively, simple process, various; Constituent element is assembling separately, and quality is easily controlled.
In SOFC pile, because air-flow distributes and the impact of electric current output, often there is the unevenness distributing in battery cell temperature, thereby causes the variation of thermal stress, makes that breaking appears in battery diaphragm, the performance of layering and battery pile exports and sharply descend degradation phenomenon.Therefore, the temperature field in battery pile being distributed and studied, is very important to research Performance data attenuating mechanism, the safe operation of maintenance pile.Especially SOFC pile starts, shuts down, changes the variation in temperature field in the transient processes such as operating mode etc., because the past is studied less, very important again to the actual motion of battery pile, more merits attention.
At present various countries scientist distributes and generally only limits to theoretical modeling and calculating for the temperature field of SOFC, and owing to laying thermopair and be easily subject to the restriction of pile encapsulant, therefore the actual measurement in operating SOFC temperature field is less.Swallow is uncommon waits by force people in patent CN101158607A, to utilize copper wire enameled wire and constantan wire enameled wire to be prepared into the temperature field that micro thermocouple is measured Proton Exchange Membrane Fuel Cells inside, but these method processing difficulties, cost are high, be difficult to be applied to the Solid Oxide Fuel Cell of hot operation, the heavy auxiliary resistance value pick-up unit that waits people to utilize fixed component in patent CN101904035A in will village is measured the temperature of DMFC, but this method is only measured the medial temperature of whole battery, and can not reflect the distribution in temperature field.
Summary of the invention
The object of the invention is to overcome the deficiency of existing theoretical modeling computing technique, the measurement mechanism and assembling and the method for operating that provide a kind of feasible assay plate type Solid Oxide Fuel Cell temperature field to distribute.
In order to achieve the above object, the measurement mechanism that one aspect of the present invention provides a kind of direct measurement large-area flat-plate type Solid Oxide Fuel Cell temperature field to distribute, comprise: turnover gas unit, described turnover gas unit comprises a pair of large-area metal plate that clips battery setting, and described sheet metal is provided with a plurality of gas passages to form admission line and outlet pipe; Between described a pair of large-area metal plate, for distributing the runner distribution unit of air-flow; Between described a pair of large-area metal plate for collecting the electric current collection unit of the electric current of described battery; And be arranged at least one the large-area metal plate in described a pair of large-area metal plate for gathering the temperature collecting cell of the temperature of battery.
The present invention utilizes the heat conduction of Metallic Interconnect Materials Used and electric conductivity, characterizing the temperature field on the battery in actual motion under various flow Field Design distributes, simple to operation, and can engage gas flow and size of current factor, checking flow Field Design, for the in heaps and practical application of Solid Oxide Fuel Cell provides design considerations.
Preferably, at least one sheet metal in described sheet metal, can be provided with a plurality of ducts, described temperature collecting cell can be a plurality of thermopairs that are arranged in described a plurality of ducts.More preferably, bottom, described a plurality of duct can be apart from the surface 2～3mm of described battery.
Preferably, described runner distribution unit can comprise that the movable a plurality of flow guide bars in position are to simulate different flow Field Design.Described flow guide bar can be made by stainless steel material, such as SUS430S, US320, Crofer22 etc.
Preferably, described electric current collection unit comprises nickel foam on the anode surface that is positioned at described battery, is positioned at the silver-colored net on the cathode plane of described battery and is welded on the silver-colored wire on described sheet metal.
Preferably, described sheet metal is made by stainless steel material, such as SUS430S, US320, Crofer22 etc.
Preferably, between described battery and sheet metal, also encapsulant can be set.Described encapsulant is filled between described sheet metal and described monocell, reaches the effect of sealing and insulation.Preferably, can adopt typical insulated enclosure material as glass, mica etc.
Preferably, measurement mechanism of the present invention also can comprise the multichannel recorder of the temperature gathering for dynamically recording being connected with described temperature collecting cell.
With respect to theory, calculate and simulation, beneficial effect of the present invention is mainly manifested in the following aspects:
(1) directly perceived: the Temperature Distribution of area battery under different flow Field Design, different operating condition can intuitively be measured and show to this measurement mechanism, can effectively supplement the calculated results;
(2) true: directly thermopair to be placed in to the region that approaches battery surface, relatively to approach real temperature field distribution situation;
(3) easily realize: by the processibility of sheet metal, a difficult problem of having avoided the laying of a large amount of thermopairs to bring to cell sealing.
Accompanying drawing explanation
Fig. 1 is according to the structural representation of the measurement mechanism of large-area flat-plate type Solid Oxide Fuel Cell of the present invention temperature field distribution;
Fig. 2 is uniform gas runner design and corresponding thermopair installation position (circular hole part) schematic diagram that embodiment 1 adopts;
Fig. 3 is the Temperature Distribution result that embodiment 1 adopts apparatus of the present invention to record: (a) air intake opening 1 place's temperature is with operating conditions change curve; (b) each point temperature distribution history on airintake direction; (c) perpendicular to each point temperature distribution history on airintake direction.
Embodiment
Below in conjunction with accompanying drawing and following embodiment, further illustrate the present invention, should be understood that following embodiment and/or accompanying drawing are only for the present invention is described, and unrestricted the present invention.
Referring to Fig. 1, it illustrates the measurement mechanism example structure that large-area flat-plate type Solid Oxide Fuel Cell of the present invention temperature field distributes.This device comprises: pair of metal plate 1,2, and sheet metal is large-area metal plate, and its area and battery to be measured are roughly the same, and pair of metal plate 1,2 is positioned at the both sides of monocell 7.Sheet metal 1,2 can be made by the stainless steel steel of high temperature resistance, such as using but be not limited to SUS430S, US320, Crofer22 etc.On each sheet metal, can be processed with a plurality of gas passages and to form, pass in and out gas unit as admission line 3,4 and outlet pipe 5,6.Although should be understood that two admission lines and two outlet pipes are shown here, should be understood that and can adopt one or more than two admission lines, equally also can adopt one or more than two outlet pipes.Between sheet metal 1,2 and monocell, also encapsulant 8 can be set, encapsulant used includes but not limited to glass or mica.
Between sheet metal 1,2, but on the both sides of monocell 7, be provided for nickel foam 9 and the silver-colored net 10 of collected current, wherein nickel foam 9 is positioned on the anode surface of monocell 7, silver net 10 is positioned on the cathode plane of monocell 7, except nickel foam 9 and silver-colored net 10, electric current collection unit also comprises the silver-colored wire 11 being welded on sheet metal 1,2.
On the inside surface of sheet metal 1,2, (towards the one side of monocell 7) is also provided with a plurality of flow guide bars 12 for distributing air-flow, flow guide bar 12 also can be made by the stainless steel steel of high temperature resistance, such as using but be not limited to SUS430S, US320, Crofer22 etc.The position changeable of flow guide bar 12, therefore can simulate different flow Field Design.
Referring to Fig. 1, at least one in sheet metal 1,2, a plurality of ducts 13 can be set again, the surface of the very close monocell 7 in the bottom in duct 13, for example, 2～3 millimeters, the surface of the distance from bottom monocell in duct 13.In a plurality of ducts 13, can place a plurality of thermopairs 14 with collecting temperature.The thermopair of collecting temperature can be connected to multichannel recorder (not shown), dynamically to record the temperature of collection.In the situation that two sheet metals are placed up and down, a plurality of ducts 13 can be set on upper sheet metal (metal top plate) 1, but on lower sheet metal (metal base plate) 2, duct 13 be set.Although sheet metal 1,2 illustrates in mode setting up and down in Fig. 1, and on upper sheet metal, duct is set, should be understood that alternate manner is also fine, and on two sheet metals, duct is all set and is also suitable for.
Between sheet metal 1,2 and monocell, also encapsulant 8 can be set, encapsulant used includes but not limited to glass or mica.Encapsulant 8 is for sealing the periphery gap of the surface of contact between monocell 7, sheet metal 1,2 and current collection material.
The assembling and the using method that the following describes the temperature measuring equipment of example assay plate type Solid Oxide Fuel Cell of the present invention, specifically comprise the steps.
(1) assembling of measurement mechanism: according to large-area solid oxide fuel cell to be measured, anode support type flat-plate solid-oxide fuel battery for example, adopt suitable stainless steel material, such as SUS430S, US320, Crofer22 etc., machining needs sheet metal, flow guide bar.According to above-mentioned measurement mechanism requirement, in one example, stack successively metal base plate, flow guide bar, cathode collector material, seal glass, the supine monocell of anode, encapsulant, anode current collector material, flow guide bar, metal top plate, then in the hole of metal top plate, place temperature thermocouple and connect multichannel recorder.In another example, stack successively metal base plate, flow guide bar, anode current collector material, encapsulant, the supine monocell of negative electrode, seal glass, cathode collector material, flow guide bar, metal top plate, then in the hole of metal top plate, place temperature thermocouple and connect multichannel recorder.
(2) test in temperature field: as in electric furnace, the sealing laggard trip temperature field test that heats up, changes the operating conditionss such as air-flow, electric current and record change of temperature field by the above-mentioned proving installation assembling.Referring to Fig. 3, it illustrates the Temperature Distribution result that apparatus of the present invention record.
Below further for example embodiment to describe the present invention in detail.Should understand equally; following examples are only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that those skilled in the art's foregoing according to the present invention is made and adjustment all belong to protection scope of the present invention., those skilled in the art can do in suitable scope and be selected by explanation herein the material that following example adopts is only also an example in selectable range,, and does not really want to be defined in the material that below example adopts.
Embodiment 1
Adopt proving installation as shown in Figure 1 to measure the field distribution of operating SOFC battery temperature.In this device, gas distributes as shown in Figure 2, i.e. two air intake openings, a gas outlet, (anodic gas is hydrogen, and cathode gas is oxygen), the design of uniform flow passage distribution; On corresponding top metal plate, the feature locations of 1～No. 5 is placed thermopair, measures monocell temperature field and distributes, and wherein 1,2, No. 3 for being parallel to gas flow direction, is for 1,4, No. 5 perpendicular to gas flow direction.Single-cell structure is: the anode-supported flat-plate-type solid-oxide fuel battery of NiO-YSZ/NiO-SSZ/SSZ/LSM, and anode surface is upward; The metal material adopting is SUS43OS, and encapsulant is glass.
The measured temperature field distribution results of this embodiment as shown in Figure 3.(a) figure is the trend that No. 1 point temperature changes with operating conditions: during electric furnace insulation, temperature rises to gradually and approaches program temperature; Nitrogen passes into galvanic anode, oxygen passes into after cell cathode, and owing to there is no preheating, temperature reduces approximately 20 ℃; Pass into after the reduction of hydrogen anode battery discharge, temperature has raise approximately 30 ℃ gradually.(b) figure is each point temperature distribution history on airintake direction, passes between hydrogen anode reduction period, and runner tail end temperature raises 10 ℃ than front end temperature; Battery starts after electric discharge, and temperature moves closer to, and the temperature difference is reduced to approximately 5 ℃.(c) figure is perpendicular to each point temperature distribution history on airintake direction, and No. 5 point place temperature is lower all the time, may have the dead angle in flow field.
Industrial applicability: the fuel cell that measurement mechanism provided by the invention can be directly used in measurement large-area flat-plate soild oxide is positioned at the temperature at different flow fields, different operating temperature, its temperature field of Efficient Characterization distributes again, method of testing is simple, has broad application prospects.
Claims (10)
1. the measurement mechanism that large-area flat-plate type Solid Oxide Fuel Cell temperature field distributes, is characterized in that, comprising:
Turnover gas unit, described turnover gas unit comprises a pair of large-area metal plate (1), (2) that clip battery (7) setting, and described sheet metal (1), (2) are provided with a plurality of gas passages to form admission line (3), (4) and outlet pipe (5), (6);
Be positioned between described a pair of large-area metal plate (1), (2), for distributing the runner distribution unit of air-flow;
Be positioned between described a pair of large-area metal plate (1), (2) for collecting the electric current collection unit of the electric current of described battery (7); And
Be arranged at described at least one the large-area metal plate (1) in large-area metal plate (1), (2) for gathering the temperature collecting cell of the temperature of battery (7).
2. measurement mechanism according to claim 1, it is characterized in that, on at least one sheet metal (1) in described sheet metal (1), (2), be provided with a plurality of ducts (13), described temperature collecting cell is for being arranged in a plurality of thermopairs (14) in described a plurality of duct (13).
3. measurement mechanism according to claim 2, is characterized in that, the surface 2～3mm of battery (7) described in the distance from bottom of described a plurality of ducts (13).
4. measurement mechanism according to claim 1, is characterized in that, described runner distribution unit comprises that the movable a plurality of flow guide bars (12) in position are to simulate different flow Field Design.
5. measurement mechanism according to claim 4, is characterized in that, described flow guide bar (12) is made by stainless steel material.
6. measurement mechanism according to claim 1, it is characterized in that, described electric current collection unit comprises nickel foam (9) on the anode surface that is positioned at described battery (7), be positioned at the silver-colored net (10) on the cathode plane of described battery (7) and be welded on the silver-colored wire (11) on described sheet metal (1), (2).
7. measurement mechanism according to claim 1, is characterized in that, described sheet metal (1), (2) are made by stainless steel material.
8. measurement mechanism according to claim 1, is characterized in that, between described battery (7) and sheet metal (1), (2), encapsulant (8) is also set.
9. measurement mechanism according to claim 8, is characterized in that, described encapsulant (8) is glass or mica.
10. measurement mechanism according to claim 1, is characterized in that, also comprises the multichannel recorder of the temperature gathering for dynamically recording being connected with described temperature collecting cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210366142.0A CN103698036A (en) | 2012-09-27 | 2012-09-27 | Device for measuring temperature field distribution of large-area flat-type solid oxide fuel cell |
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| CN201210366142.0A CN103698036A (en) | 2012-09-27 | 2012-09-27 | Device for measuring temperature field distribution of large-area flat-type solid oxide fuel cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106814325A (en) * | 2016-12-15 | 2017-06-09 | 华中科技大学 | A kind of Forecasting Methodology of SOFC pile interior temperature distribution |
| CN112212991A (en) * | 2020-10-10 | 2021-01-12 | 电子科技大学 | Fuel cell tip temperature distribution on-line measuring device |
| CN115483416A (en) * | 2022-06-30 | 2022-12-16 | 华北电力大学 | System and method for testing external temperature field of SOFC (solid oxide Fuel cell) stack |
| CN115508715A (en) * | 2022-08-24 | 2022-12-23 | 华北电力大学 | Flat-plate type solid oxide battery partition testing device and testing method thereof |
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| CN201402834Y (en) * | 2009-05-08 | 2010-02-10 | 华中科技大学 | Flat plate-type moderate temperature solid oxide fuel cell stack |
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| CN201402834Y (en) * | 2009-05-08 | 2010-02-10 | 华中科技大学 | Flat plate-type moderate temperature solid oxide fuel cell stack |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814325A (en) * | 2016-12-15 | 2017-06-09 | 华中科技大学 | A kind of Forecasting Methodology of SOFC pile interior temperature distribution |
| CN112212991A (en) * | 2020-10-10 | 2021-01-12 | 电子科技大学 | Fuel cell tip temperature distribution on-line measuring device |
| CN112212991B (en) * | 2020-10-10 | 2022-01-25 | 电子科技大学 | Fuel cell tip temperature distribution on-line measuring device |
| CN115483416A (en) * | 2022-06-30 | 2022-12-16 | 华北电力大学 | System and method for testing external temperature field of SOFC (solid oxide Fuel cell) stack |
| CN115508715A (en) * | 2022-08-24 | 2022-12-23 | 华北电力大学 | Flat-plate type solid oxide battery partition testing device and testing method thereof |
| CN115508715B (en) * | 2022-08-24 | 2023-06-23 | 华北电力大学 | Flat plate type solid oxide cell partition testing device and testing method thereof |
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Application publication date: 20140402 |