CN1379495A - Plate-type middle-temp solid oxide fuel battery stack module - Google Patents
Plate-type middle-temp solid oxide fuel battery stack module Download PDFInfo
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- CN1379495A CN1379495A CN02115884A CN02115884A CN1379495A CN 1379495 A CN1379495 A CN 1379495A CN 02115884 A CN02115884 A CN 02115884A CN 02115884 A CN02115884 A CN 02115884A CN 1379495 A CN1379495 A CN 1379495A
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- solid oxide
- connecting plate
- oxide fuel
- loam cake
- stainless steel
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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
- Y02E60/10—Energy storage using batteries
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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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Abstract
This invention provides a flat plate type moderate temp. solid oxide fuel cell piled module composed of upper cover, single cell plates, connecting plates and bottom plate arranged in a stacked mode and having fuel gas and oxidized gas channels and inlet and outlet inside. Tanks for sealed materials are set up on the said cover, connecting plate and bottom plate, which have sectional shapes of the same 2n(n is greater than or equal to 2 natural number) polygon, whose corners extend to become long corner with fixing holes, and heating thermo-insulating plates are mounted on the upper and lower surfaces of polygon stacked planes and the upper cover and bottom plate. The connecting plates are made of ferritic stainless steel.
Description
Technical field
The invention belongs to the fuel cell technology field, being specifically related to a kind of Solid Oxide Fuel Cell (SOFC), particularly working temperature is the planar cells heap of middle temperature (600～800 ℃), just a kind of flat intermediate temperature solid oxide fuel cell heap module.
Background technology
Structure about the SOFC battery pile mainly contains four kinds at present: tubular type, clock belt, flat, lamination corrugated plate dst.High temperature nuclear reactor is mainly taked tubular structure, and temperature is piled the direction that has become development now, the main plate armature that adopts of middle temperature heap.Which kind of heap all must solve problems such as gas (fuel gas, oxic gas) sealing and separation, electric current collection conduction, cold cycling.Present typical plate armature as shown in Figure 1.Fig. 1 (a) is the concurrent battery pile, and Fig. 1 (b) is the battery pile of cross-current.Air-flow trend in the flat SOFC heap adopts this class mode or roughly similar mode with monocell (anode/negative electrode) sheet mostly with the arrangement that is connected pole plate.The material that connects pole plate in the prior art mainly adopts chrome-nickel, and as Inconel 600, Inconel 601, Hastelloy X, HA-230 and Cr
5Fe
1Y
2O
3, these alloys cost an arm and a leg, and often account for 70% of battery pile cost, though it is reported that result of use is better.The sealing of flat SOFC heap is than the heap difficulty of tubular type, but middle temperature is easier than elevated-temperature seal, the most frequently used sealing means of prior art is to adopt devitrified glass, various compositions are arranged, thereby its technological means is to make crystallite/different softening temperature of glass ratio just in time in the working temperature of SOFC by adjusting its proportioning, thereby and does not become liquid at this temperature devitrified glass and realize sealing.This sealing means is often controlled complexity, poor reproducibility, and also the thermal cycle glass that heats up so again after cooling often cracks the sealing variation.The many documents of the mode that is fixed of whole stack are not all mentioned, this is the business secret of external specialized company always, domestic have only a few experiments device at present, also do not have the experimental study report of securing member high-temerature creep, but the research of this respect be commercial apparatus long-time running institute must consideration.China's utility model patent " Solid Oxide Fuel Cell " (application number 99205915) proposes to adopt snake type groove augmenting response area, but this patent is not considered the problem of elevated-temperature seal and heat resistanceheat resistant circulation, do not propose new connecting plate material yet, make present technique still have the manufacturing cost problem of higher.
Summary of the invention
The purpose of this invention is to provide a kind of flat intermediate temperature solid oxide fuel cell heap module, it has not only reduced manufacturing cost, and solved elevated-temperature seal and heat resistanceheat resistant circulatory problems, can under the thermal cycle situation, realize effectively compressing sealing and don't produce excessive thermal stress.
For achieving the above object, a kind of flat intermediate temperature solid oxide fuel cell heap module provided by the invention, loam cake by stacked arrangement, the monocell sheet, connecting plate and base plate constitute, be provided with fuel gas and oxic gas passage in it and advance, outlet, described loam cake, connecting plate and base plate are provided with the seal groove of placing encapsulant, described loam cake, the monocell sheet, connecting plate is the identical 2n limit shape of shape of cross section (n is the natural number more than or equal to 2) with base plate, polygonal angle is stretched out and is formed long angle, place, this length angle has fixing hole, on the face and loam cake and base plate that is built up by polygonal limit, heating and heat preservation slice is housed below; Described connecting plate is made by ferritic stainless steel.
Described ferritic stainless steel selects for use 0Cr17 ferritic stainless steel technique effect better.
The employed encapsulant of described seal groove adopts flexible graphite to can further improve sealing effectiveness.
Battery pile of the present invention comprises service area and fixed area, and the flat shape of battery pile is a polygon, and polygonal angle is stretched out and formed long angle and have the bolt hole on the angle, and construction bolt forms fixed area with fixing in the bolt hole; The face that builds up by polygonal limit and the upper and lower surface of heap are equipped with heating and heat preservation slice, and each sheet connects together and surrounds the service area of SOFC.The temperature of fixed area is lower than the service area, can be by strengthening the heating and heat preservation slice heat insulation effect and increase the measure of stretching out long angular length degree to guarantee that the temperature of fixed area is lower than the temperature of bolt generation high-temerature creep, so just can realize compressing sealing naturally, and can stand thermal cycle by thermal expansion.If find that the stress of thermal expansion generation is excessive, can on set bolt, add a spring and the monocell sheet be crushed so that relaxed stress is unlikely.In addition, the present invention adopts ferritic stainless steel to connect pole plate.As the connecting plate of middle temperature SOFC, common stainless steel and the heat resisting steel that contains chromium nickel can satisfy the thermal endurance requirement, and price is than Inconel 600, Inconel601, Hastelloy X, HA-230 and Cr
5Fe
1Y
2O
3Much lower, but connecting plate also requires thermal coefficient of expansion and monocell sheet approaching as far as possible except that thermal endurance requires, and electronic conductance is high as far as possible.Take all factors into consideration these factors, have only ferritic stainless steel optimum, preferentially recommend the 0Cr17 ferritic stainless steel.Adopt ferritic stainless steel to connect plate, thermal coefficient of expansion and monocell sheet are very approaching, and the thermal stress that produces down is very little so in working order; The electronic conductance height, and owing to mainly contain chromium, even oxidation at high temperature, the oxide of chromium also can conduct electricity, and facilitates the electric current that produces when connecting plate is collected the work of monocell sheet like this.The measure that also can adopt the surface to be coated with lanthanum strontium chromate further improves its non-oxidizability.
As a further improvement on the present invention, promptly adopt low-sulfur high-temperature-resistant flexible graphite to make encapsulant.The seal request of SOFC work is the low released gas rate of long-term maintenance high temperature under, anti-oxidant, low sulfur content, heat-resisting circulation, and novel flexible graphite can satisfy these requirements.Using the advantage of flexible graphite is can not produce the crackle that devitrified glass occurs because of thermal cycle like that.The flexible graphite packing ring places the groove on the connecting plate, flexible graphite was compressed when battery pile compressed, contact-making surface between connecting plate/monocell sheet and the connecting plate/connecting plate contacts closely, and the gas leakage that some micro gap caused that wherein may exist is prevented from because of the flexible graphite packing ring exists.
Description of drawings
Fig. 1 is existing typical plate armature schematic diagram, and Fig. 1 (a) is the concurrent battery pile, and Fig. 1 (b) is the battery pile of cross-current;
Fig. 2 is the architecture figure of the flat intermediate temperature solid oxide fuel cell heap of the present invention module;
Fig. 3 is the structural representation of connecting plate among Fig. 2;
Fig. 4 is not intended to for monocell chip architecture among Fig. 2;
Fig. 5 is the structural representation of loam cake among Fig. 2;
Fig. 6 is the structural representation of base plate among Fig. 2;
Fig. 7 is the structural representation of heating and heat preservation slice among Fig. 2.
Embodiment
As shown in Figure 2, n=2, loam cake 2, monocell sheet 3, connecting plate 4 and base plate 5 are quadrangle, stacked arrangement mode is same as the prior art again for it, they four jiaos stretch out and form fixing hole 1, construction bolt forms fixed area with fixing in the fixing hole 1.Six heating and heat preservation slices 6 (two are not drawn in the drawings up and down) all are equipped with in face that is built up by the limit of loam cake 2, monocell sheet 3, connecting plate 4 and base plate 5 and loam cake and base plate top and bottom, surround the service area of SOFC jointly.Battery pile, the temperature of fixed area is lower than the service area, is lower than the temperature of bolt generation high-temerature creep, so just can realize compressing sealing naturally by thermal expansion.If find that the stress of thermal expansion generation is excessive, can on set bolt, add a spring.To insulate in set bolt and loam cake 2, monocell sheet 3, connecting plate 4, base plate 5 contact positions.The electric current that SOFC produces is drawn from loam cake 2 and base plate 5.
Fig. 3 is the structural representation of connecting plate 4 in the battery pile, shown in Fig. 3 (a), which is provided with gas groove 9 in seal groove 7, interlayer gas passage 8, the layer, flexible graphite sealing gasket 10 is positioned at seal groove 7, for clarity sake, among the figure flexible graphite sealing gasket 10 is drawn in separately among Fig. 3 (b).The design of fuel gas and oxic gas passage can be adopted prior art, specifically comprises gas groove 9 in interlayer gas passage 8 and the layer in the present embodiment.Connecting plate 4 adopts ferritic stainless steel to make, and wherein the 0Cr17 ferritic stainless steel has better effect.
Fig. 4 is the structural representation of monocell sheet 3 in the battery pile, also is provided with interlayer gas passage 8 on the monocell sheet.
Fig. 5 is to be the structural representation of loam cake 2 in the battery pile, and wherein (a) is vertical view, (b) is the A-A cutaway view, (c) is upward view, has air inlet/outlet 11 on the loam cake 2, oxygen supply gasification and fuel gas turnover; Loam cake also is provided with a gas groove 9 in interlayer gas passage 8 and the layer, air inlet/outlet 11 with on the interlayer gas passage 8 that covers be connected.
The structure of base plate 5 as shown in Figure 6 owing to have gas below the base plate again and do not pass through, must pilot gas to lower floor, so interlayer gas passage 8 can only be established a pair of non-through groove, otherwise gas down miss can not Returning outlet.
The structure of heating and heat preservation slice 6 as shown in Figure 7, wherein (a) is front view, is sectional view (b), and the resistance silk braid 14 and the heat-insulation layer of resistance wire 12 is housed in heating and heat preservation slice is provided with, resistance silk braid 14 is near in the battery pile, heat-insulation layer 13 is arranged outside battery pile.
Above illustrated be a kind of embodiment of the present invention, essence of the present invention is the battery pile module is divided into fixed area and service area, and adopted ferritic stainless steel to make connecting plate, from these 2 and embodiment, those skilled in the art are not difficult to put forward many kinds of embodiments.
Claims (3)
1. a flat intermediate temperature solid oxide fuel cell is piled module, loam cake by stacked arrangement, the monocell sheet, connecting plate and base plate constitute, be provided with fuel gas and oxic gas passage in it and advance, outlet, described loam cake, connecting plate and base plate are provided with the seal groove of placing encapsulant, it is characterized in that: described loam cake, the monocell sheet, connecting plate is the identical 2n limit shape of shape of cross section (n is the natural number more than or equal to 2) with base plate, polygonal angle is stretched out and is formed long angle, place, this length angle has fixing hole, on the face and loam cake and base plate that is built up by polygonal limit, heating and heat preservation slice is housed below; Described connecting plate is made by ferritic stainless steel.
2. flat intermediate temperature solid oxide fuel cell heap module according to claim 1, it is characterized in that: described ferritic stainless steel is the 0Cr17 ferritic stainless steel.
3. flat intermediate temperature solid oxide fuel cell heap module according to claim 1 and 2, it is characterized in that: the employed encapsulant of described seal groove is a flexible graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021158843A CN1148825C (en) | 2002-05-22 | 2002-05-22 | Plate-type middle-temp solid oxide fuel battery stack module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021158843A CN1148825C (en) | 2002-05-22 | 2002-05-22 | Plate-type middle-temp solid oxide fuel battery stack module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1379495A true CN1379495A (en) | 2002-11-13 |
| CN1148825C CN1148825C (en) | 2004-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021158843A Expired - Fee Related CN1148825C (en) | 2002-05-22 | 2002-05-22 | Plate-type middle-temp solid oxide fuel battery stack module |
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| CN (1) | CN1148825C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362687C (en) * | 2002-11-14 | 2008-01-16 | 3M创新有限公司 | Fuel cell stack |
| CN100379077C (en) * | 2003-11-25 | 2008-04-02 | 丰田自动车株式会社 | Fuel cell stack |
| CN100386915C (en) * | 2006-03-10 | 2008-05-07 | 哈尔滨工业大学 | Series battery of single air chamber solid oxide fuel cell |
| CN100449846C (en) * | 2007-03-08 | 2009-01-07 | 上海交通大学 | Removable flat-plate middle temperature solid oxide fuel cell stack |
| CN101777662B (en) * | 2009-01-08 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Cell stack device of flat solid oxide fuel cell |
| CN104218252A (en) * | 2014-09-04 | 2014-12-17 | 江苏科技大学 | Flat plate type solid oxide fuel battery stack device |
| CN106252697A (en) * | 2016-08-04 | 2016-12-21 | 华中科技大学 | A kind of outflow chamber SOFC pile |
| US20210143447A1 (en) * | 2019-11-12 | 2021-05-13 | Bryan M. Blackburn | Stack configurations for solid oxide electrochemical cells |
| US20210143448A1 (en) * | 2019-11-12 | 2021-05-13 | Bryan M. Blackburn | Solid-state electrochemical devices having coated components |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4059076A1 (en) * | 2019-11-12 | 2022-09-21 | Redox Power Systems LLC | Stack configurations for solid oxide electrochemical cells |
-
2002
- 2002-05-22 CN CNB021158843A patent/CN1148825C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362687C (en) * | 2002-11-14 | 2008-01-16 | 3M创新有限公司 | Fuel cell stack |
| CN100379077C (en) * | 2003-11-25 | 2008-04-02 | 丰田自动车株式会社 | Fuel cell stack |
| CN100386915C (en) * | 2006-03-10 | 2008-05-07 | 哈尔滨工业大学 | Series battery of single air chamber solid oxide fuel cell |
| CN100449846C (en) * | 2007-03-08 | 2009-01-07 | 上海交通大学 | Removable flat-plate middle temperature solid oxide fuel cell stack |
| CN101777662B (en) * | 2009-01-08 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Cell stack device of flat solid oxide fuel cell |
| CN104218252A (en) * | 2014-09-04 | 2014-12-17 | 江苏科技大学 | Flat plate type solid oxide fuel battery stack device |
| CN106252697A (en) * | 2016-08-04 | 2016-12-21 | 华中科技大学 | A kind of outflow chamber SOFC pile |
| US20210143447A1 (en) * | 2019-11-12 | 2021-05-13 | Bryan M. Blackburn | Stack configurations for solid oxide electrochemical cells |
| US20210143448A1 (en) * | 2019-11-12 | 2021-05-13 | Bryan M. Blackburn | Solid-state electrochemical devices having coated components |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1148825C (en) | 2004-05-05 |
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