WO2007105403A1 - 発電装置 - Google Patents
発電装置 Download PDFInfo
- Publication number
- WO2007105403A1 WO2007105403A1 PCT/JP2007/052754 JP2007052754W WO2007105403A1 WO 2007105403 A1 WO2007105403 A1 WO 2007105403A1 JP 2007052754 W JP2007052754 W JP 2007052754W WO 2007105403 A1 WO2007105403 A1 WO 2007105403A1
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- WIPO (PCT)
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- thermoelectric conversion
- power generation
- type thermoelectric
- conversion member
- electrode
- Prior art date
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
- H01M4/905—Metals or alloys specially used in fuel cell operating at high temperature, e.g. SOFC
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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
- H01M8/10—Fuel cells with solid electrolytes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—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
- H01M8/04052—Storage of heat in the fuel cell system
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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
- H01M8/04—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
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
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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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
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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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1231—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte with both reactants being gaseous or vaporised
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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
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
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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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/40—Combination of fuel cells with other energy production systems
- H01M2250/402—Combination of fuel cell with other electric generators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/40—Combination of fuel cells with other energy production systems
- H01M2250/405—Cogeneration of heat or hot water
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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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 power generation device capable of efficiently using thermal energy for operating a fuel cell.
- a hydrogen fuel cell attracts attention as an energy source that can suppress the emission of carbon dioxide and carbon dioxide!
- a fuel cell main body in which a fuel electrode and an air electrode are joined to an electrolyte body is heated, for example, by an external heater, and maintained at a predetermined power generation start temperature or higher. Power is generated by supplying gas and the like.
- a solid oxide fuel cell is a solid oxide fuel in which a fuel electrode (hydrogen electrode) and an air electrode (oxygen electrode) are joined (formed) to an electrolyte composed of solid oxide. It has a battery cell body. In this solid oxide fuel cell, the fuel cell main body generates power by being supplied with fuel gas, air and the like.
- the solid oxide fuel cell can obtain high output, and not only hydrogen gas but also gas containing a large amount of carbon dioxide can be used as fuel.
- the solid oxide fuel cell operates at high temperature, it is possible to adopt an internal reforming system which eliminates the need for using an expensive platinum catalyst.
- it is equipped with a solid oxide fuel cell such as a fuel that can generate hydrogen and carbon dioxide necessary for fuel cell reaction such as methane by utilizing the heat generated from the fuel cell main body. It is possible to reduce the size and increase the efficiency of the device.
- a single-chamber type can generate power by arranging the fuel cell main body in an atmosphere in which a fuel gas such as hydrogen or methane and the like are mixed without separating the fuel electrode and the air electrode with a separator.
- Solid oxide fuel cells are also known.
- Such single-chamber solid oxide fuel cells are disclosed, for example, in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017, and Japanese Open Patent Application 2002-313357. Is disclosed in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017, and Japanese Open Patent Application 2002-313357. Is disclosed in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017, and Japanese Open Patent Application 2002-313357. Is disclosed in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017, and Japanese Open Patent Application 2002-313357. Is disclosed in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017, and Japanese Open Patent Application 2002-313357. Is disclosed in Japanese Patent Application Laid-Open No. 2002-280015, Japanese Patent Laid-open Application 2002-2800017,
- the present invention is a power generation device capable of effectively utilizing thermal energy for operating a fuel cell and preferably reaction heat to realize high power generation efficiency.
- the purpose is to provide.
- a power generation apparatus is joined to at least one of a cell body having an electrolyte body, a fuel electrode and an air electrode, the fuel electrode and the air electrode, and a P type thermoelectric conversion member And a secondary power generation unit having an N-type thermoelectric conversion member.
- the P-type thermoelectric conversion member and the N-type thermoelectric conversion member joined to the cell main body performing power generation under high temperature environment are more than power generation by the cell main body.
- secondary power generation means can be configured to obtain power by the Seebeck effect. Therefore, the power generation efficiency can be improved.
- reaction heat at the fuel electrode or the air electrode where the P-type thermoelectric conversion member and the N-type thermoelectric conversion member are joined is also converted to electric power by the Seebeck effect, higher power generation efficiency can be realized.
- the N-type thermoelectric conversion member may be joined to the fuel electrode of the cell body, and the P-type thermoelectric conversion member may be joined to the air electrode of the cell body.
- the cell body is interposed between the P-type thermoelectric conversion member and the N-type thermoelectric conversion member to be a thermocouple, a voltage obtained by adding the generated voltage by the Seebeck effect to the generated voltage by the cell body is supplied to the outside. Can.
- the secondary power generation means may comprise an electrical insulating layer disposed at a junction with the cell body.
- the secondary power generation means is electrically isolated from the cell body by the electrical insulation layer, the cell body and the secondary power generation means are appropriately connected in series or in parallel to obtain a desired generated voltage. Can.
- the P-type thermoelectric conversion member is joined to the fuel electrode of the cell body via the first electrical insulating layer, and the N-type thermoelectric conversion member is a second electrical insulating layer at the air electrode of the cell body.
- the second power generation means is connected to the electrode of the P-type thermoelectric conversion member facing the first insulating layer, and the electrode of the N-type thermoelectric conversion member facing the second insulating layer. You may further provide the electrically-conductive member which conduct
- the reaction heat at the fuel electrode and the air electrode can be transmitted to the P-type thermoelectric conversion member and the N-type thermoelectric conversion member, respectively, the power generation efficiency by the Seebeck effect is improved.
- the N-type thermoelectric conversion member and the P-type thermoelectric conversion member are disposed apart from the insulating layer, and the secondary power generation unit is configured to face the insulating layer and the P-type thermoelectric conversion member and the N-type thermoelectric conversion member It further comprises a conductive member for conducting the electrodes of
- the arrangement of the cell body, the P-type thermoelectric conversion member and the N-type thermoelectric conversion member can be optimized in a high temperature atmosphere, so that the power generation efficiency can be further improved.
- the cell main body may constitute a part of a solid oxide fuel cell.
- more power can be obtained by the secondary power generation means by supplementing the cell body of the solid oxide fuel cell that generates electric power under a high temperature environment, and the power generation efficiency is further enhanced.
- a power generation apparatus comprises a cell body having an electrolyte body, a fuel electrode and an air electrode, and a secondary power generation means having a P-type thermoelectric conversion member and an N-type thermoelectric conversion member.
- the P-type thermoelectric conversion member doubles as the air electrode of the cell body.
- the reaction heat of the air electrode is directly transmitted to the P-type thermoelectric conversion member, so that the power generation efficiency by the Seebeck effect is further enhanced.
- the thermoelectric conversion member and a part of the cell body are common, the number of components of the power generation device can be reduced.
- the N-type thermoelectric conversion member may also serve as the fuel electrode of the cell body.
- reaction heat of both the fuel electrode and the air electrode is directly transferred to the secondary power generation means to further enhance the power generation efficiency by the Zebeck effect. Further, by sharing the cell body and the thermoelectric conversion member, simplification and cost reduction of the power generation apparatus can be realized. Furthermore, the output voltage of the secondary power generation means can be added to the output voltage of the cell body and output.
- the cell body generates electric power, and the thermal energy discharged to the outside as waste heat without being used for power generation can be used for power generation.
- the reaction heat at the fuel electrode and air electrode of the cell body is converted to electric power by the Seebeck effect by the P-type thermoelectric conversion member and the N-type thermoelectric conversion member, the efficiency as a power generation device using a fuel cell is further enhanced. It can be enhanced.
- FIG. 1 is a schematic cross-sectional view of a power generation device according to a first embodiment of the present invention
- FIG. 2 A diagram showing a schematic cross-sectional structure of a power generation apparatus in which a P-type thermoelectric conversion member and an N-type thermoelectric conversion member are further joined to a fuel electrode through an electrical insulation layer in the first embodiment.
- FIG. 3 A diagram showing a cross-sectional schematic structure of a power generation device according to a modification of the first embodiment
- FIG. 4 A diagram showing a cross-sectional schematic structure of a power generation device according to a second embodiment of the present invention
- FIG. 5 is a schematic cross-sectional view of a power generation device according to a third embodiment of the present invention
- FIG. 6 A diagram showing a cross-sectional schematic structure of a power generation apparatus according to a fourth embodiment of the present invention.
- FIG. 7 is a view showing a cross-sectional schematic structure of a power generation device according to a modification of the fourth embodiment.
- FIG. 1 A power generation apparatus according to a first embodiment of the present invention will be described based on FIG. 1 and FIG.
- FIG. 1 shows a schematic cross-sectional structure of a power generation device according to a first embodiment of the present invention.
- a solid oxide fuel cell main body single-chamber type
- a cell main body fuel cell main body of a power generation device.
- the power generation system 10 has a gas flow path 11, a cell body 20, and a secondary power generation device (secondary power generation means) 30.
- the cell body 20 is accommodated in the gas flow passage 11 and constitutes a part of a single-chamber solid oxide fuel cell.
- a temperature at which the cell body 20 starts power generation (a power generation start temperature) in which a mixed fuel gas obtained by mixing a fuel gas such as CHx (hydrocarbon compound) and COx (carbon compound) and air is mixed. It is heated above and introduced into the gas flow path 11 from the outside of the power generation device 10.
- the power generation start temperature is, for example, 500 to 1000 degrees Celsius.
- the fuel electrode 22 is bonded to one surface of the solid oxide electrolyte 21 and the air electrode 23 is bonded to the other surface.
- the fuel electrode 24 is bonded to the surface opposite to the bonding surface of the fuel electrode 22 with the solid oxide electrolyte 21.
- an air electrode 25 is bonded to the surface opposite to the bonding surface of the air electrode 23 with the solid oxide electrolyte 21.
- the fuel electrode 24 is connected to the outside of the gas flow passage 11 by a conductor 24a and the air electrode 25 by a conductor 25a.
- the solid oxide electrolyte 21 is, for example, 8 mol-YSZ (yttria-stable zirconia), 5 mol- YSZ, SDC (scandiner-doped ceria), GDC (gadrium-doped ceria), or ScSZ ( It can be formed by scandia (stable) (zirkoyua) etc.
- Fuel pole 22 For example, NiO + YSZ, NiO + SDC, NiO + GDC, LSCM (lanthanum cobaltium cobalt manganite), Fe 2 O, or the like can be formed.
- the cathode 23 is an example
- LSM lathanum strontium manganite
- LSC lathanum strontium cobaltite
- the secondary power generation device 30 has a P-type thermoelectric conversion member 31 and an N-type thermoelectric conversion member 32. One end side of the P-type thermoelectric conversion member 31 and one end side of the N-type thermoelectric conversion member 32 are bonded to each other on the fuel electrode 24. The P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 joined in this way are in contact with the fuel electrode 22 via the fuel electrode 24 to form a high temperature side contact of the thermocouple.
- a P member electrode 31 a is joined to the other end side of the P-type thermoelectric conversion member 31 located outside the gas flow passage 11, and an N-type thermoelectric conversion also located outside the gas flow passage 11.
- An N member electrode 32 a is joined to the other end side of the member 32.
- the P-type thermoelectric conversion member 31 can be formed, for example, using chromel, and the N-type thermoelectric conversion member 32 can be formed, for example, using constantan or the like.
- the temperature of the cell body 20 is equal to or higher than the power generation start temperature. It is heated to operate as a fuel cell.
- oxygen ions (0 2 _ ) are generated by the air in the mixed fuel gas.
- the oxygen ions move in the solid oxide electrolyte body 21 to the fuel electrode 22, and the cell body 20 generates electric power.
- the transferred oxygen ions react with CH x and CO x contained in the mixed fuel gas at the fuel electrode 22, and carbon dioxide (CO 2) and water (
- the power generation apparatus 10 can generate power as the single-chamber solid oxide fuel cell and also generate power by the Seebeck effect, so high power generation efficiency can be obtained. Since reaction heat is generated also in the air electrode 23, a secondary power generation device may be bonded to the air electrode 23, and a secondary power generation device may be bonded to both the fuel electrode 22 and the air electrode 23. . Further, as shown in FIG. 2, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constituting the secondary power generation device 30 are made of the fuel electrode 22 and the air electrode 23 via the electrical insulating layer 40. It may be bonded to either one or both. When the electrical insulating layer 40 is used as described above, the secondary power generation device 30 and the cell main body 20 are electrically insulated. Therefore, the cell main body 20 and the secondary power generation device 30 are appropriately connected in series or in parallel. By connecting, a desired generated voltage can be obtained.
- FIG. 3 shows a schematic cross-sectional structure of a power generation apparatus which is a modification of the first embodiment.
- the components having the same functions as those of the first embodiment are given the same reference numerals, and the description thereof is omitted.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 that constitute the secondary power generation device 30 are connected to the fuel electrode 22 via the electrical insulating layer 40. It is joined to the fuel electrode 24 and twisted.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 are separated on the electrical insulating layer 40, and one end side of the P-type thermoelectric conversion member 31 and one end side of the N-type thermoelectric conversion member 32 are conductive members. Connected to each other via 33
- the reaction heat of the cell body 20 can be efficiently utilized at a position P
- the mold-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 can be disposed.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 can be disposed at positions where heat energy can be efficiently absorbed from the mixed fuel gas flowing in the vicinity of the cell main body 20.
- the power generation device 10a can further enhance the power generation efficiency.
- FIG. 4 shows a schematic cross-sectional structure of a power generation device according to a second embodiment of the present invention.
- the components having the same functions as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.
- the P-type thermoelectric conversion member 31 is joined to the fuel electrode 24 of the fuel electrode 22 through the first electrical insulation layer 40, and the N-type thermoelectric conversion member 32 is the second electrical insulation layer 41. Through It is joined to the air electrode 25 of the air electrode 23.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constitute a secondary power generation device (secondary power generation means) 30.
- a second P-member electrode 3 lb which is an electrode of the P-type thermoelectric conversion member is formed.
- a second N member electrode 32b which is an electrode of the N-type thermoelectric conversion member is formed.
- the second P-member electrode 3 lb and the second N-member electrode 32 b are electrically connected by the conductive member 33.
- the fuel battery cell main body 20 When mixed fuel gas heated to the power generation start temperature or higher is introduced into the external gas flow passage 11 of the power generation device 10b in the power generation device 10b, the fuel battery cell main body (hereinafter referred to as the cell main body) 20 is heated to a temperature above the power generation start temperature to operate as a fuel cell.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 are heated by the thermal energy of the mixed fuel gas. Because such heating is applied, the P-type thermoelectric conversion member 31 is also heated by the reaction heat of the fuel electrode 22, and the N-type thermoelectric conversion member 32 is also heated by the reaction heat of the air electrode 23. The efficiency of the
- the power generation device 10b can generate power as a single-chamber solid fuel cell and generate power by the Seebeck effect to further enhance the power generation efficiency.
- the secondary power generation device 30 and the cell main body 20 are electrically isolated, a desired generated voltage can be obtained by appropriately connecting the cell main body 20 and the secondary power generation device 30 in series or in parallel. You can get
- FIG. 5 shows a schematic cross-sectional structure of a power generation device according to a third embodiment of the present invention.
- the components having the same functions as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.
- the P-type thermoelectric conversion member 31 is directly joined to the air electrode 23, and the N-type thermoelectric conversion member 32 is directly joined to the fuel electrode 22.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constitute a secondary power generation device (secondary power generation means) 30. That is, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 of the secondary power generation device 30 are electrically connected to each other through the fuel cell main body (hereinafter referred to as the cell main body) 20! .
- the cell main body 20 In the power generation apparatus 10c, when the mixed fuel gas heated above the power generation start temperature is also introduced into the gas flow path 11 of the power generation apparatus 10c, the cell body 20 is heated to a temperature above the power generation start temperature. Operates as a fuel cell.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 are heated by thermal energy contained in the mixed fuel gas. Such heating is effective, the P-type thermoelectric conversion member 31 is also heated by the reaction heat of the air electrode 23, and the N-type thermoelectric conversion member 32 is also heated by the reaction heat of the fuel electrode 22. As a result, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 which constitute the secondary power generation device 30 generate power by the Seebeck effect.
- the power generation device 10c can generate power more efficiently by the Seebeck effect, so that the power generation efficiency can be further enhanced. it can.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 of the secondary power generation device 30 are electrically connected via the cell body 20, the cell body 20 and the secondary power generation are generated.
- the device 30 is electrically connected in series. Therefore, a voltage obtained by adding the generated voltage of the secondary power generation device 30 to the generated voltage of the cell body 20 is output between the first P member electrode 31 a and the first N member electrode 32 a.
- FIG. 6 shows a schematic cross-sectional structure of a power generation device according to a fourth embodiment of the present invention.
- the components having the same functions as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.
- the fuel electrode 22 is joined to one surface of the solid oxide electrolyte 21, and the N-type thermoelectric conversion member 32 is interposed via the fuel electrode 24. It is joined to the fuel electrode 22.
- a P-type thermoelectric conversion member 31 which is also an air electrode is joined to the other surface of the solid oxide electrolyte 21. That is, the cell body 20a has a solid oxide electrolyte 21, a fuel electrode 22, and a P-type thermoelectric conversion member 31 which is also an air electrode.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constituting the secondary power generation device (secondary power generation means) 30 are the solid oxide electrolyte body 21, the fuel electrode 22 and the fuel electrode 24. Electrically connected through!
- the cell body 20a is heated to a temperature higher than the power generation start temperature. Be operated as a fuel cell.
- the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 are heated by thermal energy contained in the mixed fuel gas. At this time, since the P-type thermoelectric conversion member 31 reacts as an air electrode, the reaction heat is also heated. As a result, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constituting the secondary power generation device 30 generate electric power by the Seebeck effect.
- the power generation device 10d can generate power as a single-chamber solid fuel cell and can generate power by the Seebeck effect, power generation efficiency can be enhanced. Further, in the power generation device 10d, since the P-type thermoelectric conversion member 31 reacts as an air electrode, the reaction heat can be used more efficiently for power generation.
- FIG. 7 shows a schematic cross-sectional structure of a power generation device according to a modification of the fourth embodiment.
- the components having the same functions as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.
- an N-type thermoelectric conversion member 32 which is also a fuel electrode, is joined to one surface of the solid oxide type electrolyte body 21.
- a P-type thermoelectric conversion member 31 which is also an air electrode is joined to the other surface of the solid oxide electrolyte 21. That is, the cell main body 20b has a solid oxide type electrolyte body 21, a P-type thermoelectric conversion member 31 which is also an air electrode, and an N-type thermoelectric conversion member 32 which is also a fuel electrode.
- the N-type thermoelectric conversion member 32 and the P-type thermoelectric conversion member 31 constituting the secondary power generation device (secondary power generation means) 30 are electrically connected to each other via the solid oxide electrolyte body 21. .
- the cell body 20b is heated to a temperature equal to or higher than the power generation start temperature. Be operated as a fuel cell. Further, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 are heated by the thermal energy of the mixed fuel gas, and both are heated by the reaction heat of the fuel cell. As a result, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 constituting the secondary power generation device 30 generate electric power by the Seebeck effect. Thus, in the power generation device 10e, the P-type thermoelectric conversion member 31 and the N-type thermoelectric conversion member 32 Since the heat of reaction is directly heated, the power generation efficiency is further enhanced.
- the power generating apparatus comprises a fuel cell main body, and if the reaction heat of the fuel electrode or the air electrode in the fuel cell main body can be used, the electrolyte body is a solid oxide electrolyte body. It is not limited to Further, the type of fuel cell constituted by the fuel cell main body is not limited to the single-chamber fuel cell. Furthermore, the power generator according to the present invention may have a plurality of fuel cell main bodies.
- the fuel cell body is heated by the high temperature combustion exhaust gas to generate electric power.
- the secondary power generation device can generate electric power by the heat energy of the combustion exhaust gas and the heat of reaction in either or both of the fuel electrode and the air electrode, the power generation efficiency is improved. be able to.
- a power generation apparatus is applied to a car or the like, it is possible to generate electricity using combustion exhaust gas, and it is possible to improve combustion cost and clean the combustion exhaust gas.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN2007800148257A CN101432911B (zh) | 2006-02-27 | 2007-02-15 | 发电装置 |
US12/224,148 US8288042B2 (en) | 2006-02-27 | 2007-02-15 | Electric power generation device |
CA2642498A CA2642498C (en) | 2006-02-27 | 2007-02-15 | Power generating apparatus |
EP07714284A EP1990853B1 (en) | 2006-02-27 | 2007-02-15 | Power generating apparatus |
KR1020087020199A KR101332996B1 (ko) | 2006-02-27 | 2007-02-15 | 발전장치 |
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JP2006-050121 | 2006-02-27 | ||
JP2006050121A JP5128777B2 (ja) | 2006-02-27 | 2006-02-27 | 発電装置 |
Publications (1)
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WO2007105403A1 true WO2007105403A1 (ja) | 2007-09-20 |
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PCT/JP2007/052754 WO2007105403A1 (ja) | 2006-02-27 | 2007-02-15 | 発電装置 |
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US (1) | US8288042B2 (ja) |
EP (1) | EP1990853B1 (ja) |
JP (1) | JP5128777B2 (ja) |
KR (1) | KR101332996B1 (ja) |
CN (1) | CN101432911B (ja) |
CA (1) | CA2642498C (ja) |
WO (1) | WO2007105403A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2178143A4 (en) * | 2007-08-06 | 2014-01-22 | Atsumitec Kk | GENERATOR |
US9083011B2 (en) | 2010-12-13 | 2015-07-14 | Ngk Insulators, Ltd. | Solid oxide fuel cell |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009051949A1 (de) * | 2009-11-04 | 2011-05-05 | Benteler Automobiltechnik Gmbh | Thermoelektrisches Generatorenmodul und abgasführendes Bauteil |
KR101179390B1 (ko) | 2010-06-23 | 2012-09-04 | 삼성전기주식회사 | 연료 전지 시스템 |
US20110139204A1 (en) * | 2010-10-04 | 2011-06-16 | King Fahd University Of Petroleum And Minerals | Energy conversion efficient thermoelectric power generator |
CN102024973A (zh) * | 2010-11-16 | 2011-04-20 | 成都振中电气有限公司 | 固体氧化物燃料电池 |
CN107681925A (zh) * | 2017-10-26 | 2018-02-09 | 浙江大学 | 一种两级温差发电的余热利用装置 |
JP2022512893A (ja) * | 2018-10-30 | 2022-02-07 | フイリツプス66カンパニー | 熱電的に強化された燃料電池 |
US11777113B2 (en) | 2021-10-15 | 2023-10-03 | Toyota Motor Engineering & Manufacturing North America, Inc. | Waste heat reclamation in a power generation system and method of operating a power generation system |
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JPH09289030A (ja) * | 1996-04-23 | 1997-11-04 | Mitsubishi Heavy Ind Ltd | 固体電解質燃料電池モジュール |
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JPH04290073A (ja) * | 1991-03-19 | 1992-10-14 | Fujitsu Ltd | 画像データ圧縮装置 |
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US8039726B2 (en) * | 2005-05-26 | 2011-10-18 | General Electric Company | Thermal transfer and power generation devices and methods of making the same |
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2006
- 2006-02-27 JP JP2006050121A patent/JP5128777B2/ja active Active
-
2007
- 2007-02-15 US US12/224,148 patent/US8288042B2/en active Active
- 2007-02-15 KR KR1020087020199A patent/KR101332996B1/ko active IP Right Grant
- 2007-02-15 CN CN2007800148257A patent/CN101432911B/zh active Active
- 2007-02-15 WO PCT/JP2007/052754 patent/WO2007105403A1/ja active Application Filing
- 2007-02-15 CA CA2642498A patent/CA2642498C/en active Active
- 2007-02-15 EP EP07714284A patent/EP1990853B1/en active Active
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JPH04280073A (ja) * | 1991-03-08 | 1992-10-06 | Nippon Telegr & Teleph Corp <Ntt> | 固体電解質型燃料電池 |
JPH09289030A (ja) * | 1996-04-23 | 1997-11-04 | Mitsubishi Heavy Ind Ltd | 固体電解質燃料電池モジュール |
JP2000173640A (ja) * | 1998-12-03 | 2000-06-23 | Tokyo Gas Co Ltd | 熱電変換方法及び装置 |
JP2001028805A (ja) * | 1999-07-12 | 2001-01-30 | Toyota Motor Corp | 移動体の駆動装置 |
JP2002141077A (ja) * | 2000-11-06 | 2002-05-17 | Sony Corp | 固体高分子電解質型燃料電池及び燃料電池スタック |
WO2005004263A2 (fr) * | 2003-06-16 | 2005-01-13 | Renault S.A.S | Cogeneration d’electricite par utilisation de l’effet seebeck a l’interieur d’une pile a combustible |
JP2006147400A (ja) * | 2004-11-22 | 2006-06-08 | Nissan Motor Co Ltd | 燃料電池システム |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2178143A4 (en) * | 2007-08-06 | 2014-01-22 | Atsumitec Kk | GENERATOR |
US9083011B2 (en) | 2010-12-13 | 2015-07-14 | Ngk Insulators, Ltd. | Solid oxide fuel cell |
Also Published As
Publication number | Publication date |
---|---|
JP2007227306A (ja) | 2007-09-06 |
KR101332996B1 (ko) | 2013-11-25 |
CA2642498A1 (en) | 2007-09-20 |
EP1990853B1 (en) | 2012-08-01 |
CN101432911A (zh) | 2009-05-13 |
EP1990853A1 (en) | 2008-11-12 |
US8288042B2 (en) | 2012-10-16 |
KR20080098036A (ko) | 2008-11-06 |
CA2642498C (en) | 2013-08-20 |
CN101432911B (zh) | 2012-03-21 |
EP1990853A4 (en) | 2010-08-11 |
US20090087691A1 (en) | 2009-04-02 |
JP5128777B2 (ja) | 2013-01-23 |
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