WO2012015113A1 - 평관형 고체산화물 셀 스택 - Google Patents
평관형 고체산화물 셀 스택 Download PDFInfo
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- WO2012015113A1 WO2012015113A1 PCT/KR2010/008964 KR2010008964W WO2012015113A1 WO 2012015113 A1 WO2012015113 A1 WO 2012015113A1 KR 2010008964 W KR2010008964 W KR 2010008964W WO 2012015113 A1 WO2012015113 A1 WO 2012015113A1
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- gas flow
- gas
- flow channel
- solid oxide
- unit cells
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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
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
- H01M8/122—Corrugated, curved or wave-shaped MEA
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
- H01M8/243—Grouping of unit cells of tubular or cylindrical configuration
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
- H01M8/2435—High-temperature cells with solid electrolytes with monolithic core structure, e.g. honeycombs
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
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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
Definitions
- the present invention relates to a planar solid oxide cell stack, and more particularly to minimizing the stress of cell stacking, minimizing the sealing area, sealing, lengthening the chemical reaction path, and electric energy generation when used as a fuel cell.
- the present invention relates to a flat tubular solid oxide cell stack that increases efficiency and increases purity of generated gas (hydrogen) when used as a high temperature electrolytic device.
- a fuel cell is a high-efficiency clean power generation technology that converts hydrogen and oxygen contained in a hydrocarbon-based material such as natural gas, coal gas, and methanol into electrical energy directly by an electrochemical reaction. It is largely classified into alkali type, phosphoric acid type, molten carbonate, solid oxide, and polymer fuel cell.
- the solid oxide fuel cell is a fuel cell that operates at a high temperature of about 600 ° C to 1000 ° C with all components formed in a solid form, which is the most efficient among various types of fuel cells. Not only is it high and low pollution, it has several advantages that it is possible to combine power generation without the need for a fuel reformer.
- the solid oxide fuel cell may be used as a solid oxide electrolyzer cell (SOEC) by inverting an electrochemical reaction.
- Electrochemical reaction apparatuses such as the solid oxide fuel cell and the high temperature water electrolytic apparatus are classified into a flat type and a cylindrical type according to their shape.
- the flat type has an advantage of high power density (output), but has a large gas sealing area and lamination. Thermal shock occurs due to the difference in thermal expansion coefficient between materials and it is difficult to make large area.
- the cylindrical type has the advantage that the resistance to thermal stress and mechanical strength is relatively high and the large area can be manufactured by extrusion molding. There is a limit of low power density (output).
- a flat tube type electrochemical reactor for example, a flat tube type solid oxide fuel cell
- a flat tube type solid oxide fuel cell for example, a flat tube type solid oxide fuel cell
- the flat tubular electrochemical reactor also has a stack structure in which cells are stacked to increase output, and there are difficulties in current collection on the anode and cathode sides, and the number of gas inlet manifolds increases in proportion to the number of cells, There is difficulty.
- Korean Patent Publication No. 2009-0084160 has been disclosed as an electrode support and a unit cell for a flat tube solid oxide fuel cell
- Korean Patent Publication No. 2009-0104548 is disclosed as a cell stack using such an electrode support and a unit cell.
- the conventional flat tube type electrochemical reactors flat type solid oxide fuel cell and flat type high temperature electrolytic device
- a stack collector type metallic connecting plate processed in a semicircular arc or plate shape to allow a plurality of cells made of ceramic material to be seated. Because it's done by connecting.
- the cell may be damaged due to the difference in the coefficient of thermal expansion between the cell made of a ceramic material and the metallic connecting plate, and there is a problem that the metallic connecting plate material is brought into contact with air and oxidized to reduce current collection performance.
- the manifold portion is sealed to isolate the oxidant (air or oxygen) supply and the reducing agent (hydrogen or hydrocarbon) supply.
- the number of gas inlet manifolds increases in proportion to the number of stacked cells, and the shape of the manifold sealing portion is complicated, which makes gas sealing difficult and the operating temperature is high. There is a difficulty in selecting a sealing structure and a sealing material to seal the.
- an object of the present invention is to minimize the stress of the cell stacking (cell stacking), to minimize the sealing area and to seal, to lengthen the chemical reaction path and to use when used as a fuel cell
- the present invention is to provide a flat-pipe solid oxide cell stack that improves energy generation efficiency and improves the purity of generated gases (hydrogen) when used as a high temperature hydroelectrolyzer.
- the flat tubular solid oxide cell stack includes a first gas flow channel through which a first gas flows in a longitudinal direction, a second gas flow channel through which a second gas flows, and a porous structure.
- a stack of solid-state solid oxide cells in which a plurality of unit cells including a conductive flat electrode support are stacked to form a stack, wherein the first gas flows in a zigzag fashion along the longitudinal direction of the unit cell.
- a connecting hole is formed at an end of the connecting hole communicating with the first gas flow channel of the unit cells stacked adjacent to each other.
- One end of the first gas flow channel of the unit cells stacked on the lower side and the upper side of the unit cells is provided with a first gas access manifold through which the first gas flows in and out.
- the first gas flow manifold may include a first gas flow channel of unit cells stacked in the middle of the unit cells such that the first gas splits vertically from the middle of the stack and flows zigzag along the longitudinal direction of the unit cells. It may be further formed at one end of.
- One end of the first gas flow channel of the unit cell in which the first gas entry manifold is installed is opened in the longitudinal direction of the unit cell.
- a ceramic conductor is provided on the side of the unit cell in which the second gas flow channel is formed or the opposite side thereof to connect or collect electricity.
- a ring-shaped sealing groove is formed at an outer side of the connection hole, and a sealing ring is inserted into the sealing groove to prevent leakage of gas through the connection hole.
- connection hole has a structure in which a plurality of holes are arranged in a circumferential direction to communicate with the first gas flow channel, and the sealing groove surrounds the plurality of holes.
- the first gas flow channel may be formed in plural, and the connecting hole may include a plurality of large holes communicating at the same time with the two first gas flow channels and a plurality of small holes communicating with the first gas flow channel.
- a semicircle is arranged in the circumferential direction and communicates with the plurality of first gas flow channels, and the sealing groove is preferably configured to surround the plurality of large holes and the plurality of small holes.
- a plurality of first gas flow channels may be formed, and connecting passages may be formed at ends of the plurality of first gas flow channels, such that the plurality of first gas flow channels may communicate with each other.
- the sealing grooves are formed to face each other in unit cells adjacent to each other.
- the sealing ring is a paste or tape based on ceramic (glass, mica, silica, etc.) or metal (silver, gold, etc.) material.
- the formation of the stack minimizes the complicated shape of the sealing portion of the manifold area without using a metallic connecting material, thereby minimizing the stress of cell stacking and the number of manifold parts.
- the effect is to reduce the number and simplify the structure.
- the first gas flows zigzag along the longitudinal direction of the unit cell, a long chemical reaction path is formed, and when the fuel cell is used as a fuel cell, the electrical energy generation efficiency is increased and the high temperature electrolytic device is generated. It is effective in increasing the purity of gas (hydrogen).
- the present invention can form a cell stack by stacking flat tubular unit cells even with a gas channel connection hole and a sealing portion between very small unit cells.
- FIG. 1 is a block diagram showing a flat tubular solid oxide cell stack according to a first embodiment of the present invention
- FIG. 2 is a separated configuration diagram showing the unit cells of the cell stack of FIG. 1 separated;
- 3 (a) and 3 (b) are a plan view and a sectional view of the first unit cell of FIG. 2;
- 4 (a) and 4 (b) are a plan view and a cross-sectional view showing a second unit cell of FIG. 2;
- FIG. 5 (a) to (i) are views showing an example of a connection hole of a unit cell to which the present invention is applied;
- 6 (a) and 6 (b) are cross-sectional views showing connection hole portions of adjacent unit cells to which the present invention is applied;
- 7 (a) and 7 (b) are a plan view and a sectional view of another example of the first unit cell of FIG. 2;
- FIG. 8 is an explanatory diagram showing a first gas flow of a flat solid oxide cell stack according to a first embodiment of the present invention
- FIG. 9 is a block diagram showing a flat tubular solid oxide cell stack according to a second embodiment of the present invention.
- FIG. 10 is a block diagram showing a flat solid oxide cell stack according to a third embodiment of the present invention.
- FIG. 11 is a longitudinal cross-sectional view illustrating the third unit cell of FIG. 10.
- first electrode support 111b and 121b first electrode intermediate layer
- electrolyte layer 111e and 121e second electrode layer
- 140,240,340 First gas inlet manifold 140 ', 240', 340 ': First gas inlet manifold
- planar solid oxide cell stack of the present invention may be used as a fuel cell or a high temperature electrolyzer cell, which will be described below as a planar solid oxide cell stack used as a fuel cell.
- FIG. 1 is a block diagram showing a flat solid oxide cell stack according to a first embodiment of the present invention
- Figure 2 is a separate configuration showing the unit cell of the cell stack of FIG.
- a first gas hydrogen or hydrocarbon
- the second unit cells 120 and 120 'on which the first gas inlet manifold 140 (the first gas inlet manifold 140 and the first gas inlet manifold) are provided are stacked.
- the first unit cell 110 includes a plurality of first gas flow channels through which a first gas flows inside the first electrode support 111a to be described later.
- 112 is formed along the longitudinal direction, and a plurality of second gas flow channels 113 through which a second gas (air or oxygen) flows outside one side of the first electrode support 111a is the first gas flow channel.
- the plurality of first gas flow channels are formed in a direction crossing the 112 (the width direction of the first electrode support) so that the first gas flows zigzag along the longitudinal direction of the first unit cell 110.
- connection holes 114 communicating with a plurality of first gas flow channels of adjacently stacked unit cells are formed, and the second gas flow channel 113 is formed to connect electricity.
- the ceramic conductor 115 is coated on the first electrode intermediate layer described later.
- the first unit cell 110 includes a first electrode support 111a made of a porous conductive material including a material of a fuel electrode (cathode) or an air electrode (anode), and an outer surface of the first electrode support 111a.
- the second electrode layer 111e coated on the outer surface of the electrolyte layer 111c coated on the portion 113 is formed.
- NiO-YSZ material nickel oxide-yttria stabilized zirconia material
- the electrode material of the second electrode layer 111e may be used.
- LSM LaSrMnO 3
- the electrolyte layer 111c may be an YSZ material, but various electrode materials may be used.
- the first electrode intermediate layer 111b and the second electrode layer 111e are formed to have a porous gas, and the electrolyte layer 111c and the ceramic conductor 115 do not mix with the first gas and the second gas. It is formed of a dense membrane without pores.
- the plurality of first gas flow channels 112 may be closed at both ends thereof in the longitudinal direction, and the plurality of connection holes 114 may be formed at opposite ends thereof in opposite directions, and the plurality of second gas flow channels 113 may be formed in the
- the width of the first unit cell 110 is formed in the middle of the first unit cell 110 in the longitudinal direction.
- connection hole 114 includes a plurality of large holes 114a communicating with two first gas flow channels 112 and a plurality of small holes 114b communicating with one first gas flow channel 112. ) Is arranged in a circumferential direction in a circle to communicate with the plurality of first gas flow channels 112.
- the connecting holes 114 are arranged with a plurality of large holes 114a and a plurality of small holes 114b in a semicircle to form the plurality of first gas flows. It may be in communication with the channel 112.
- one integral hole 114c may communicate with the plurality of first gas flow channels 112. As shown in FIG. 5C, one integral hole 114c may communicate with the plurality of first gas flow channels 112. As shown in FIG. 5C, one integral hole 114c may communicate with the plurality of first gas flow channels 112. As shown in FIG. 5C, one integral hole 114c may communicate with the plurality of first gas flow channels 112. As shown in FIG. 5C, one integral hole 114c may communicate with the plurality of first gas flow channels 112. As shown in FIG.
- connection hole 114 includes a plurality of small holes 114b communicating with one of the first gas flow channels 112 over the entire surface of the circle.
- a plurality of small holes 114b communicating with a plurality of first gas flow channels 112 or communicating with one of the first gas flow channels 112 as shown in FIG. 5E form a circle. It may be arranged in a direction to communicate with the plurality of first gas flow channels 112.
- a plurality of large holes 114a simultaneously communicating with the two first gas flow channels 112 are arranged in a straight line to form the plurality of first gas flow channels ( 112, or as shown in FIG. 5 (g), a plurality of large holes 114a, which are simultaneously in communication with the two first gas flow channels 112, are arranged in an inclined line to form the plurality of agents.
- a plurality of large holes 114a communicating with one gas flow channel 112 or simultaneously communicating with the two first gas flow channels 112 as shown in FIG. 5 (h) are arranged in a line.
- connection hole 114 is disposed as shown in Figure 3 (a) or as shown in Figures 5 (a) and (b) is preferable when considering the mechanical strength, sealing area and gas flow of the structure, etc. It was confirmed that the most preferable is arranged, as shown in Figure 3 (a).
- a ring-shaped sealing groove 116 is formed outside the connection hole 114 to surround the connection hole 114 arranged along the circumferential direction.
- the sealing ring 150 is inserted into the sealing groove 116 to prevent leakage of gas through the connection hole 114.
- the ring-shaped sealing groove 116 and the sealing ring 150 has the effect of minimizing the sealing area.
- the sealing grooves 116 are formed to face each other in the first unit cell 110 or the second unit cell 120 (shown in FIG. 4) adjacent to each other.
- the sealing groove 116 may be formed in only one of the first unit cell 110 or the second unit cell 120 (shown in FIG. 4) adjacent to each other.
- the sealing ring 150 inserted into the sealing groove 116 of Figure 6 (a) is thicker than the thickness of the sealing ring 150 'inserted into the sealing groove 116 of Figure 6 (b). It is inserted into the sealing groove 116 facing each other to increase the leakage effect of the gas.
- the sealing rings 150 and 150 ' are made of a paste or a tape based on ceramic (glass, mica, silica, etc.) or metal (silver, gold, etc.) materials, and eliminate the step gaps between unit cells to be stacked. In this case, the flow of the sealing ring is suppressed.
- the plurality of first gas flow channel 112 may be configured to have a structure in which connecting passages (112a) are formed at both ends of the longitudinal direction and communicate with each other. have.
- This configuration can further minimize the sealing area even if the size of the connecting hole 114 'is made small or the number is small, and the area of the sealing groove 116' and the sealing ring 150 "is small.
- the remaining configurations in a) and (b) are the same as those in FIGS. 3A and 3B, and therefore the same reference numerals are omitted, and detailed description thereof will be omitted.
- the second unit cell 120 includes a plurality of first gas flow channels 122 through which a first gas flows inside the first electrode support 121a. ) Is formed along the longitudinal direction, and a plurality of second gas flow channels 123 through which a second gas (air or oxygen) flows outside one side of the first electrode support 121 is the first gas flow channel 122.
- a plurality of first of the first unit cells 110 stacked adjacent to one end of each of the plurality of first gas flow channels 122 and formed in a direction crossing the width (the width direction of the first electrode support).
- a plurality of connection holes 124 communicating with the gas flow channels are formed, and the other end of the plurality of first gas flow channels 122 is the first gas inlet manifold 140 (first gas inlet manifold) ( 140 ': A channel is opened in a longitudinal direction so as to communicate with the first gas outlet manifold) and a second gas flow for collecting or connecting electricity
- first gas inlet manifold 140 first gas inlet manifold
- 140 ' A channel is opened in a longitudinal direction so as to communicate with the first gas outlet manifold
- second gas flow for collecting or connecting electricity
- ceramic conductors 125 and 115 serving as current collectors are attached to the second electrode layer 123 (or the first electrode intermediate layer 121b).
- the other side of the second unit cells 120 and 120 ′ (the first gas entry and exit manifold side) is formed longer than the first unit cell 110 to facilitate entry and exit piping.
- hydrogen (or hydrocarbon) is introduced through the first gas inlet manifold 140 as shown in FIG. 8. It flows into the first gas flow channel of the lowermost second unit cell 120 and flows zigzag in the first gas flow channels of the plurality of first unit cells 110 in the direction of the arrow to form the uppermost second unit cell ( Through the first gas flow manifold 140 ′ through the first gas flow channel of 120 ′, while the first gas (hydrogen or hydrocarbon) flows with the first unit cell 110. Reacts with air (or oxygen) flowing through the second gas flow channel of the second unit cells 120 and 120 ′ to generate electricity and through the first gas outlet manifold 140 ′ with the generated water. Will leak. Electricity is collected through the ceramic conductor 125.
- water vapor flows through the first gas inlet manifold 140 to undergo an electrochemical reaction (reverse reaction of the reaction of the fuel cell) to generate hydrogen, and to generate a first gas outlet manifold ( 140 ').
- FIG. 9 is a block diagram showing a flat tubular solid oxide cell stack according to a second embodiment of the present invention.
- a flat tubular solid oxide cell stack 200 of the present embodiment second embodiment
- a plurality of first unit cells 210 are stacked in the vertical direction
- the first and second sides are stacked on the lowermost and uppermost sides.
- the second unit cells 220 and 220 ' are provided with a first gas inlet manifold (240: first gas inlet manifold, 240': first gas outlet manifold) through which gas (hydrogen or hydrocarbon) enters and exits.
- the second unit cells 220 and 220 'stacked on the lowermost and uppermost sides of the present exemplary embodiment have a first gas inflow manifold 240 and a first gas at ends protruding in opposite directions from each other.
- the outlet manifold 240 ' is provided. Since the rest of the configuration is the same as in the first embodiment, detailed description thereof will be omitted.
- FIG. 10 is a block diagram showing a flat tubular solid oxide cell stack according to a third embodiment of the present invention
- FIG. 11 is a longitudinal cross-sectional view showing a third unit cell of FIG.
- a plurality of first unit cells 310 are stacked in an up and down direction, and a first and a first are disposed on a lowermost side and a uppermost side.
- the second unit cells 320 and 320 'on which the first gas outlet manifold 340' through which gas (hydrogen or hydrocarbon) flows out are installed are stacked, respectively, and the first unit cells 310 are stacked.
- the first gas inflow manifold 340 ′ is provided with a third unit cell 330 in which the first gas inflow manifold 340 is installed at the end protruding in the left-right direction.
- the third unit cell 330 has a plurality of first gas flow channels 332 formed therein along the length direction of the first electrode support (not shown).
- a plurality of second gas flow channels 333 through which a second gas (air or oxygen) flows in one outer plane of the first electrode support (not shown) may cross the first gas flow channel 332. It is formed in a direction (width direction of the support), and communicates with the plurality of first gas flow channels of the first unit cell 310 adjacently stacked at one end portion in the longitudinal direction of the plurality of first gas flow channels 332.
- a plurality of connection holes 334 are formed in the upper and lower surfaces, respectively, and the other end of the plurality of first gas flow channels 332 is formed in the first gas inflow manifold 340 (first gas inflow manifold). Channels are opened in the longitudinal direction to communicate with each other, and the second gas flow channel 333 is connected to connect electricity.
- the ceramic conductor 335 is coated on the first electrode intermediate layer (not shown, see 121b of the first embodiment). Since the rest of the configuration such as the sealing groove 336 is the same as the configuration of the first embodiment or the second embodiment, a detailed description thereof will be omitted.
- hydrogen when used as a fuel cell, hydrogen (or hydrocarbon) is transferred to the third unit cell 330 through the first gas inlet manifold 340. Flows into the first gas flow channel of the first gas flow channel of the plurality of first unit cells 310 stacked up and down through the connection hole 334 and flows in a zigzag manner.
- the first and second gas flow manifolds 340 ′ are respectively discharged through the first gas flow channels of the lower and uppermost second unit cells 320 and 320 ′.
Abstract
Description
Claims (11)
- 내부에 제1가스가 흐르는 제1가스흐름 채널이 길이방향을 따라 형성되고, 외부에 제2가스가 흐르는 제2가스흐름 채널이 형성되며, 다공성의 전도성 평관형 전극지지체를 포함하는 다수의 단위 셀이 적층되어 스택을 이루는 평관형 고체산화물 셀 스택에 있어서,상기 제1가스가 단위 셀의 길이방향을 따라 지그재그식으로 흐르도록 상기 제1가스흐름 채널의 단부에는 인접하여 적층된 단위 셀의 제1가스흐름 채널에 연통하는 연결구멍이 형성된 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 1에 있어서,상기 단위 셀 중에서 하측과 상측에 적층된 단위 셀의 제1가스흐름 채널의 일단부에는 제1가스가 출입하는 제1가스출입 매니폴드가 설치되는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 2에 있어서,상기 제1가스가 스택의 중간에서 상하측방향으로 갈라져 단위 셀의 길이방향을 따라 지그재그식으로 흐르도록 상기 제1가스출입 매니폴드는 상기 단위 셀 중에서 중간에 적층된 단위 셀의 제1가스흐름 채널의 일단부에 추가로 형성되는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 2 또는 청구항 3에 있어서,상기 제1가스출입 매니폴드가 설치된 단위 셀의 제1가스흐름 채널의 일단부는 단위 셀의 길이방향으로 트인 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 1에 있어서,상기 단위 셀의 제2가스흐름 채널이 형성된 면 또는 그 반대쪽면에는 전기를 연결하거나 집진하도록 세라믹 도전체가 부착된 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 1에 있어서,상기 연결구멍의 외측에는 링형태의 밀봉홈이 형성되며,상기 연결구멍을 통한 가스의 누설을 방지하도록 상기 밀봉홈에는 밀봉링이 삽입된 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 6에 있어서,상기 연결구멍은 다수의 구멍이 원을 이루면서 원주방향으로 배열되어 상기 제1가스흐름 채널에 연통하고,상기 밀봉홈은 상기 다수의 구멍을 감싸는 구조로 되어 있는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 6에 있어서,상기 제1가스흐름 채널은 다수개가 형성되고,상기 연결구멍은 2개의 상기 제1가스흐름 채널에 동시에 연통하는 다수의 대구멍과 1개의 상기 제1가스흐름 채널에 연통하는 다수의 소구멍이 원 또는 반원을 이루면서 원주방향으로 배열되어 다수의 상기 제1가스흐름 채널에 연통하며,상기 밀봉홈은 상기 다수의 대구멍과 다수의 소구멍을 감싸는 구조로 되어 있는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 6에 있어서,상기 제1가스흐름 채널은 다수개가 형성되고,상기 다수의 제1가스흐름 채널의 단부에는 연결유로가 형성되어 상기 다수의 제1가스흐름 채널이 서로 연통되어 있는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 6 내지 청구항 9 중의 어느 한 항에 있어서,상기 밀봉홈은 서로 인접하는 단위 셀에 서로 마주보게 각각 형성되어 있는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
- 청구항 6에 있어서,상기 밀봉링는 세라믹 또는 금속 소재를 기반으로 한 페이스트 또는 테이프로 되어 있는 것을 특징으로 하는 평관형 고체산화물 셀 스택.
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US20120141903A1 (en) | 2012-06-07 |
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