WO2015087913A1 - 燃料電池スタック及び燃料電池モジュール - Google Patents
燃料電池スタック及び燃料電池モジュール Download PDFInfo
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- WO2015087913A1 WO2015087913A1 PCT/JP2014/082676 JP2014082676W WO2015087913A1 WO 2015087913 A1 WO2015087913 A1 WO 2015087913A1 JP 2014082676 W JP2014082676 W JP 2014082676W WO 2015087913 A1 WO2015087913 A1 WO 2015087913A1
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- gas
- fuel
- fuel cell
- cell stack
- manifold
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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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
- H01M8/04—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
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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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
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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
- H01M8/2432—Grouping of unit cells of planar 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
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells 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
- H01M8/248—Means for compression of the fuel cell stacks
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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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- 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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- 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 fuel cell stack in which a plurality of fuel cells each including an electrolyte layer having a fuel electrode layer and an air electrode layer are stacked, and a fuel cell module including the fuel cell stack.
- a solid oxide fuel cell using a solid electrolyte (solid oxide) (hereinafter also referred to as “SOFC”) is known as a fuel cell.
- SOFC solid electrolyte
- a large number of fuel cells each having a single cell provided with a fuel electrode layer on one surface of a plate-shaped solid electrolyte layer (solid oxide layer) and an air electrode layer on the other surface are stacked.
- a fuel cell stack is known.
- serial flow structure of the flow path of the fuel gas means that the fuel gas flows to a predetermined fuel cell in the fuel cell stack and the fuel gas discharged from the fuel cell is sent to another fuel cell. It is a structure that flows in parallel with the fuel cells.
- each manifold for example, fuel gas and air introduced from outside through a low temperature pass through each manifold, or fuel gas and air that has increased in temperature by heat exchange in the fuel cell stack, Since fuel gas and air that have reacted to each fuel battery cell and have become even higher temperature pass, the temperature around each manifold is greatly different.
- the temperature in the cell plane is greatly reduced and the in-plane resistance is also increased.
- the metal member is deteriorated when a part having an excessively high temperature is generated due to the in-plane temperature distribution of the fuel cell.
- the fuel cell stack according to the first aspect of the present invention is provided on an electrolyte layer, a fuel electrode layer provided on one surface of the electrolyte layer and in contact with fuel gas, and on the other surface of the electrolyte layer.
- a fuel cell stack in which a plurality of fuel cell cells each having an air electrode layer in contact with an oxidant gas are stacked, wherein the fuel cell stack is disposed on a part of the fuel cell cells in the stacking direction. And at least one of the oxidant gas, and at least one of the fuel gas and the oxidant gas discharged from the part of the fuel cells, the part of the fuel cells in the stacking direction.
- the fuel cell stack is configured to pass through a plurality of the fuel cells in the stacking direction of the fuel cell and the oxidant gas.
- a plurality of manifolds that circulate at least one of them, a manifold for cold gas that introduces the fuel gas or the oxidant gas into the fuel cell stack from the outside as the manifold, and the fuel gas from the fuel cell
- a heat-exchanged gas that circulates a heat-exchanged gas that has been heat-exchanged at a heat exchange manifold into which at least one of the fuel gas or the oxidant gas is introduced, and a hot gas manifold that discharges the oxidant gas
- all of the cold gas manifolds are adjacent to the hot gas manifold and the hot gas manifold. Are not adjacent to other hot gas manifolds.
- a cold gas manifold that introduces fuel gas or oxidant gas into the fuel cell stack from the outside, and a fuel cell And a hot gas manifold that discharges fuel gas or oxidant gas, and a post-heat exchange gas manifold that allows the post-heat exchange gas exchanged in the heat exchange section to flow therethrough.
- the cold gas manifolds are all adjacent to the hot gas manifolds, and the hot gas manifolds are the other ones. Not adjacent to the hot gas manifold.
- all of the cold gas manifolds having a low temperature are adjacent to the hot gas manifold having a higher temperature than that of the cold gas. Since the manifold is not adjacent to another hot gas manifold having a temperature higher than that of the cold gas, the temperature difference in the planar direction of the fuel cell (that is, the direction in which the fuel cell spreads in plan view) can be reduced. That is, the temperature in the planar direction of the fuel cell (and hence the fuel cell stack) can be made uniform.
- the in-plane temperature distribution of the fuel cell can be reduced, so that the resistance distribution in the cell plane is small, and thus the current distribution and voltage distribution in the cell plane can also be reduced.
- the lateral flow of current in the cell plane can be suppressed, a remarkable effect that a stable high output can be obtained is obtained.
- the in-plane temperature distribution of the fuel cell is also small from this point, and a part where the temperature is excessively high is generated. Since it is difficult, there is an advantage that deterioration of the metal member can be suppressed.
- the gas after heat exchange is a gas after heat exchange, that is, after being used for a power generation reaction with a gas (cold gas) before heat exchange in the heat exchange section (for example, from a fuel cell) It is a gas having a temperature between the gas (hot gas) immediately after discharge.
- the cold gas is a gas introduced from the outside of the fuel cell stack, and is a gas at a lower temperature than the temperature of the gas after heat exchange or the power generation temperature (that is, the temperature in the fuel cell that is generating power). Is shown.
- the manifold is an internal gas flow path of a fuel cell stack that passes through a plurality of fuel cells in the stacking direction and distributes fuel gas or oxidant gas.
- the manifold is a fuel gas of each fuel cell. And a flow path of the oxidizing gas through a branch path (for example, a communication groove).
- the fuel gas or oxidant gas manifold is a fuel gas or oxidant gas flowing in the stacking direction of the fuel cell stack, and supplying fuel gas or oxidant gas to the fuel cell, It is a flow path used for discharging fuel gas or oxidant gas from the fuel battery cell.
- the post-heat exchange gas manifold is a manifold that can be used to supply the fuel cell with at least the post-heat exchange gas that is an oxidant gas that has undergone heat exchange in the heat exchange section.
- the fuel cell stack may be configured by stacking only fuel cells, but may be configured by stacking other configurations such as an auxiliary device such as a fuel gas reformer. Further, the heat exchanging part may be disposed inside or outside the fuel cell stack.
- the heat exchanging unit may be provided inside the fuel cell stack and exchange heat with the adjacent fuel cell.
- a preferred position of the heat exchange unit is illustrated. Thereby, heat exchange can be efficiently performed with the fuel battery cells and the like around the heat exchange unit.
- the hot gas manifold when the fuel cell stack is viewed from the stacking direction, includes the post-heat exchange gas manifold and the cold gas manifold. At least one of the manifolds may be adjacent.
- the hot gas manifold is adjacent to at least one of the gas manifold after heat exchange and the cold gas manifold.
- the hot gas manifold which has the highest temperature, is adjacent to the manifold for cold gas and the manifold for cold gas, which have a lower temperature, so the temperature in the plane direction of the fuel cells is uniform. can do.
- the cold gas manifold and the heat exchange tube are disposed on both sides of the hot gas manifold. At least one of the gas manifolds may be adjacent.
- the cold gas manifold and the post-heat exchange gas manifold are adjacent to both sides of the hot gas manifold, so that the temperature in the planar direction of the fuel cell is more uniform.
- manifolds may be arranged in a row in plan view.
- phrase “arranged in a line” includes not only a case where they are arranged linearly but also a case where they are bent in the middle and arranged in a line.
- the cold gas of the oxidant gas is provided in the hot gas manifold of the oxidant gas.
- Manifold manifolds may be adjacent.
- the temperature of the oxidant gas that has become the hot gas is higher than the temperature of other gases (for example, cold gas or gas after heat exchange), and the oxidant gas is supplied in a larger amount than the fuel gas.
- the oxidant gas hot gas manifold is adjacent to the oxidant gas hot gas manifold, so that the periphery of the oxidant gas hot gas manifold is effective. Can be cooled. Thereby, the temperature in the plane direction of the fuel cell can be made more uniform.
- the hot gas manifold is disposed on both sides of the cold gas manifold of the oxidant gas. May be adjacent to each other.
- a hot gas manifold is adjacent to both sides of a cold gas manifold for an oxidant gas supplied in a larger amount than a normal fuel gas. Therefore, since the ambient temperature of the cold gas manifold can be effectively maintained, the temperature in the planar direction of the fuel cells can be made more uniform.
- a fuel cell module according to a seventh aspect of the present invention includes the fuel cell stack according to any one of the first to fifth aspects.
- a fuel cell module according to a seventh aspect is a fuel cell module including the fuel cell stack described above.
- the fuel cell module is configured to include, for example, a heat insulating container and a burner accommodated in the heat insulating container used for power generation in addition to the fuel cell stack.
- the fuel cell stack one having a through hole penetrating a plurality of fuel cells in the stacking direction and using all of the through holes as a manifold of fuel gas or oxidant gas can be adopted.
- a through hole penetrating the fuel cell stack in the stacking direction can be adopted.
- the fuel gas and the oxidant gas in the manifold are supplied until they reach both ends in the stacking direction of the fuel cell stack, there is an advantage that the temperature in the stacking direction of the fuel cell stack can also be made uniform.
- FIG. 1 is a schematic configuration diagram showing a fuel cell system including a fuel cell stack of Example 1.
- FIG. FIG. 2A is an explanatory diagram schematically showing the flow path of the oxidant gas by breaking the fuel cell stack of Example 1 in the stacking direction
- FIG. 2B is an explanatory diagram schematically showing the flow path of the fuel gas similarly broken.
- It is. 3A is a plan view of the fuel cell stack of Example 1, and FIG. 3B is a front view thereof.
- FIG. 2 is an explanatory view schematically showing the fuel cell stack and the flow path of the fuel gas, with the fuel cell stack of Example 1 broken along the fuel gas manifold in the stacking direction.
- FIG. 2 is an explanatory view schematically showing a fuel cell stack and an oxidant gas flow path, with the fuel cell stack of Example 1 broken along the air manifold in the stacking direction. It is explanatory drawing which fractures
- 1 is a perspective view showing a part of a fuel cell stack and the flow of fuel gas and oxidant gas after disassembling the fuel cell stack in Example 1.
- FIG. 3 is a plan view showing a heat exchange part for oxidizing gas in Example 1.
- FIG. FIG. 3 is a plan view showing a fuel gas heat exchange section in Embodiment 1.
- FIG. 2 is an explanatory diagram schematically showing the fuel cell stack of Example 1 broken in the stacking direction and superposed on the flow of fuel gas as cold gas, post-heat exchange gas, and hot gas.
- the flow in the plane direction of the cold gas, the gas after heat exchange, and the fuel gas as the hot gas are schematically shown in a superimposed manner.
- FIG. 3 is an explanatory diagram schematically showing the fuel cell stack of Example 1 broken in the stacking direction and superposed with the flow of oxidant gas as cold gas, post-heat exchange gas, and hot gas.
- it is a plan view schematically showing the flow in the plane direction of the oxidant gas as the cold gas, the gas after heat exchange, and the hot gas in an overlapping manner.
- FIG. 14A is an explanatory diagram showing the temperature state of the fuel gas manifold C in the plan view of the fuel cell stack of Example 1
- FIG. 14B is an explanatory diagram showing the temperature state of the oxidant gas manifold in the plan view.
- FIG. 14C is an explanatory view showing the temperature state of the manifold of fuel gas and oxidant gas in the same plan view. It is a perspective view which decomposes
- FIG. 17A is an explanatory diagram showing the temperature state of the fuel gas manifold in a plan view of the fuel cell stack of Example 2
- FIG. 17B is an explanatory diagram showing the temperature state of the oxidant gas manifold in the plan view
- FIG. These are explanatory drawings which show the temperature state of the manifold of fuel gas and oxidant gas in the same planar view. It is a perspective view which decomposes
- FIG. 20A is an explanatory diagram showing the temperature state of the fuel gas manifold in a plan view of the fuel cell stack of Example 3
- FIG. 20B is an explanatory diagram showing the temperature state of the oxidant gas manifold in the plan view
- FIG. These are explanatory drawings which show the temperature state of the manifold of fuel gas and oxidant gas in the same planar view.
- FIG. 21A is an explanatory view schematically showing the flow path of the oxidant gas by breaking the fuel cell stack of Example 4 in the stacking direction
- FIG. 21B is an explanatory view schematically showing the flow path of the fuel gas similarly broken. It is.
- Fuel cell stack 9 ... Fuel cell module 13 ... Fuel cell 15, 15a, 15b, 133 ... Heat exchange part 41a, 41b, 41c, 41d, 41e, 41f, 41g, 41h ... Internal gas Flow path (manifold) 51 ... Solid electrolyte layer 52 . Fuel electrode layer 53 ... Air electrode layer
- the fuel cell system 1 includes a fuel cell module 9 in which a fuel cell stack 3 and a burner 5 are accommodated in a heat insulating container 7, and a fuel gas (for example, hydrogen: F) and an oxidant gas (for example, air (specifically, oxygen in the air): O) are supplied to generate power.
- a fuel gas for example, hydrogen: F
- an oxidant gas for example, air (specifically, oxygen in the air): O
- the fuel cell system 1 includes a path 11a for supplying a fuel gas to the fuel cell stack 3 from outside the heat insulating container 7 and a path 11b for supplying an oxidant gas, and a fuel gas to a burner 5 for heating the fuel cell stack 3. And a path 11c for supplying a mixture of air and air (Mix).
- the fuel gas and the oxidant gas used for power generation discharged from the fuel cell stack 3 may be discharged outside the heat insulating container 7 after being burned in the heat insulating container 7, or as they are outside the heat insulating container 7. May be discharged.
- the flow path of the fuel gas and the flow path of the oxidant gas are arranged inside the fuel cell stack 3, that is, the fuel cell 13 as shown in FIGS. 2A-2B.
- the stacking direction vertical direction in FIGS. 2A-2B of FIG. 3A-3B.
- the oxidant gas when the oxidant gas is introduced into the fuel cell stack 3 from the outside, the oxidant gas passes through the heat exchange unit 15 in the fuel cell stack 3 (here, for example, the central portion of the fuel cell stack 3), It is introduced into the first end block 17 on the oxidant gas side above the heat exchange section 15 and the second end block 19 on the oxidant gas side below, and then merges and is discharged to the outside.
- the heat exchange unit 15 in the fuel cell stack 3 here, for example, the central portion of the fuel cell stack 3
- the central portion of the fuel cell stack 3 is a region sandwiched between the fuel cells 13 arranged in the stacking direction of the fuel cell stack 3, and the fuel cell in the stacking direction of the fuel cell stack 3. It refers to a portion other than the vicinity of both ends of the stack 3 (for example, a portion other than the fuel battery cells 13 at both ends).
- the fuel gas when the fuel gas is introduced into the fuel cell stack 3 from the outside, the fuel gas passes through the heat exchanging portion 15 in the fuel cell stack 3 (here, for example, the central portion of the fuel cell stack 3), and then The fuel gas side first end block 21 and the lower fuel gas side second end block 23 that are above the replacement unit 15 are introduced into the fuel gas side third end block 25. It is introduced and discharged outside.
- the fuel cell stack 3 includes a fuel cell stack body 26 in which a plurality of fuel cells 13 that are plate-shaped power generation cells are stacked in the thickness direction, and a fuel cell stack body 26 in the stacking direction.
- Eight bolt through holes 27a to 27h (generally referred to as 27) penetrating in the vertical direction of FIG. 3B and eight bolts 29a to 29h (generally referred to as 29) inserted through the bolt through holes 27.
- a nut 31 screwed into the bolt 29.
- the heat exchange unit 15 is preheated as a plate-like fuel gas heat exchange unit 15 a that preheats the fuel gas and the oxidant gas.
- a plate-shaped heat exchanger 15b for the oxidant gas is provided, and a pair of end plates 33a and 33b that also serve as current collectors are provided on both sides of the fuel cell stack 3 in the stacking direction.
- the heat exchanging portion 15 is disposed in the central portion in the stacking direction of the fuel cell stack 3, but is not limited thereto.
- the heat exchanging unit 15 may be arranged at an end portion in the stacking direction of the fuel cell stack 3, for example, other than the central portion in the stacking direction of the fuel cell stack 3.
- the fuel cell stack 3 includes a plurality of fuel cell cells 13 (for example, 19 levels: 19 CELLS).
- the fuel cell stack 3 is simply configured as an 8-level fuel cell stack 3. Will be described as an example.
- the fuel cells 13 at each stage are, in order from the top, 13A, 13B, 13C, 13D on the upper stage side from the heat exchange section 15, and 13E, 13F, 13G, 13H on the lower stage side from the heat exchange section 15.
- the first end block 17 corresponds to 13A to 13D
- the second end block 19 corresponds to 13E to 13H
- the first end block 21 corresponds to 13A to 13d
- the second end block 23 corresponds to 13E
- the third end block 25 corresponds to 13F to 13F.
- the bolt 29 is disposed so as to penetrate the fuel cell stack 3 in the stacking direction, and nuts 31 are screwed to both ends thereof, and the fuel cell stack main body is screwed by the bolt 29 and the nut 31. 26 is fastened in the stacking direction and fixed integrally.
- the configuration in which the nut 31 is screwed to both ends of the bolt 29 is taken as an example, but a configuration in which a head is provided at one end of the bolt 29 and the nut 31 is screwed to the other end may be employed.
- the fuel gas is introduced from the lower side of the first bolt 29a (F (IN)) and the reacted fuel gas is discharged from the lower side of the sixth bolt 29f. (F (OUT)), the oxidant gas is introduced from the upper side of the third bolt 29c (O (IN)), and the reacted oxidant gas is discharged from the lower side of the fourth bolt 29d (O (OUT)). Is configured to do.
- the bolt through holes 27 and the bolts 29 are numbered 1 to 8 in the clockwise direction from the upper left part of FIG. 3A (the same applies to other applicable configurations). b) Next, the configuration of the bolt 29 will be described in detail.
- hollow internal gas passages 41a to 41h (generally referred to as 41) (refer to FIGS. 4 and 5) as manifolds are provided so as to extend in the axial direction.
- the flow path 41 is configured so that fuel gas or oxidant gas flows.
- the internal gas flows of the first, second, fifth, sixth, and seventh bolts 29a, 29b, 29e, 29f, and 29g.
- the paths 41a, 41b, 41e, 41f, and 41g are used as fuel gas flow paths (indicated by black arrows in FIG. 4).
- the internal gas passages 41c, 41d, and 41h of the third, fourth, and eighth bolts 29c, 29d, and 29h are formed into oxidant gas passages (the white arrows in FIG. 5). It is used as
- the first bolt 29a is provided with an internal gas passage 41a for fuel gas. Since the internal gas channel 41a communicates with the outside (that is, below the fuel cell stack 3) through the opening 42a, fuel gas is supplied to the internal gas channel 41a from the outside.
- the first bolt 29a is provided with an outlet lateral hole 43a which is a through hole extending in the radial direction so as to communicate with the internal gas flow path 41a.
- the outlet lateral hole 43a and the fuel gas heat exchanging portion 15a are configured to communicate with each other.
- the fifth and seventh bolts 29e and 29g (shown as one bolt in FIG. 4) are provided with internal gas passages 41e and 41g for fuel gas, and the internal gas passages 41e and 41g.
- the upper and lower sides are closed.
- the fifth and seventh bolts 29e are provided with inlet side holes 43e, 43g and a plurality of outlet side holes 45e, 45g, which are through holes extending in the radial direction so as to communicate with the internal gas flow paths 41e, 41g. ing.
- the fuel gas heat exchanging portion 15a communicates with the inlet side holes 43e and 43g, and the outlet side holes 45e and 45g and the fuel flow paths 47A to 47E (47 of the first to fifth fuel cell units 13A to 13E) (47). Are collectively communicated with each other.
- the second bolt 29b is provided with an internal gas passage 41b for fuel gas, and the upper and lower sides of the internal gas passage 41b are closed.
- the second bolt 29b is provided with a plurality of inlet side holes 43b and a plurality of outlet side holes 45b which are through holes extending in the radial direction so as to communicate with the internal gas flow path 41b.
- the fuel flow paths 47A to 47E of the first to fifth fuel cells 13A to 13E communicate with the inlet side holes 43b, respectively, and the outlet side holes 45b and the sixth to eighth fuel cells 13F to 13H.
- the fuel flow paths 47F to 47H are configured to communicate with each other.
- the sixth bolt 29f is provided with an internal gas passage 41f for fuel gas. Since the internal gas channel 41f communicates with the outside (that is, below the fuel cell stack 3) through the opening 42f, the fuel gas after reaction is discharged from the internal gas channel 41f to the outside.
- the sixth bolt 29f is provided with a plurality of inlet side holes 43f which are through holes extending in the radial direction so as to communicate with the internal gas flow path 41f.
- the fuel flow paths 47F to 47H of the sixth to eighth fuel cells 13F to 13H and the inlet lateral holes 43f are configured to communicate with each other.
- the third bolt 29c is provided with an internal gas passage 41c for oxidizing gas. Since the internal gas flow path 41c communicates with the outside (that is, below the fuel cell stack 3) through the opening 42c, the oxidant gas is supplied to the internal gas flow path 41c from the outside.
- the third bolt 29c is provided with a lateral outlet hole 43c that is a through hole extending in the radial direction so as to communicate with the internal gas flow path 41c.
- the outlet lateral hole 43c and the oxidant gas heat exchanging portion 15b are configured to communicate with each other.
- the eighth bolt 29h is provided with an internal gas flow path 41h for oxidizing gas, and the upper and lower sides of the internal gas flow path 41h are closed.
- the eighth bolt 29h is provided with an inlet lateral hole 43h and a plurality of outlet lateral holes 45h which are through holes extending in the radial direction so as to communicate with the internal gas flow path 41h.
- the oxidant gas heat exchanging portion 15b and the inlet side hole 43h communicate with each other, and the outlet side holes 45h and the air flow paths 49A to 49H (49 collectively) of the first to eighth fuel cells 13A to 13H. ) Communicate with each other.
- the fourth bolt 29d is provided with an internal gas passage 41d for oxidizing gas. Since the internal gas channel 41d communicates with the outside (that is, below the fuel cell stack 3) through the opening 42d, the oxidant gas after reaction is discharged from the internal gas channel 41d to the outside. .
- the fourth bolt 29d is provided with a plurality of inlet side holes 43d which are through holes extending in the radial direction so as to communicate with the internal gas flow path 41d.
- the air flow paths 49A to 49H of the first to eighth fuel cells 13A to 13H are configured to communicate with the inlet side holes 43d, respectively.
- the fuel battery cell 13 is a so-called fuel electrode support membrane type plate-like cell.
- the fuel cell 13 includes a thin-film solid electrolyte layer 51 and a fuel electrode layer (anode: AN) 52 and a thin-film air electrode layer (cathode: CA) 53 formed on both sides thereof.
- the solid electrolyte layer 51, the fuel electrode layer 52, and the air electrode layer 53 are collectively referred to as a single cell 54. Note that an air flow path 49 exists on the air electrode layer 53 side of the single cell 54, and a fuel flow path 47 exists on the fuel electrode layer 52 side.
- the fuel cell 13 is joined to a pair of upper and lower interconnectors 57a and 57b, a plate-shaped gas seal portion 58 on the air electrode layer 53 side, and the upper surface of the outer edge portion of the single cell 54, and the air flow path 49 and the fuel flow.
- a frame-shaped separator 59 for blocking the passage 47, a plate-shaped fuel electrode frame 60 disposed on the fuel electrode layer 52 side, and a gas seal portion 61 on the fuel electrode layer 52 side are provided, and these are laminated. And is configured integrally.
- a fuel electrode side current collector 62 is disposed between the fuel electrode layer 52 and the interconnector 57 b, and an air electrode side current collector 63 is disposed on the surface of the interconnector 57 a (downward in FIG. 6). Are integrally formed.
- bolt through holes 27 through which the respective bolts 29 are inserted are formed in the outer periphery of the square frame shape of the fuel battery cell 13.
- materials such as YSZ, ScSZ, SDC, GDC, and perovskite oxide can be used.
- the material of the fuel electrode layer 52 Ni and a cermet of Ni and ceramic can be used, and as the material of the air electrode layer 53, a perovskite oxide or the like can be used.
- the interconnectors 57a and 57b are plate materials made of ferritic stainless steel, and eight holes 55 and 56 respectively corresponding to the bolt through holes 27 are provided on the outer edge portions thereof.
- the gas seal portion 58 is made of mica or vermulite, and is a frame-shaped plate material having a square opening 65 at the center. Eight holes 66 corresponding to the bolt through holes 27 are provided on the outer edge portion of the gas seal portion 58. It has been.
- the fourth and eighth holes 66d and 66h are elongated holes extending along the sides.
- the fourth and eighth holes 66d and 66h and the opening 65 communicate with each other through communication grooves 67 and 68 extending in a comb shape.
- the communication grooves 67 and 68 are not holes that penetrate the gas seal portion 58 in the thickness direction, but are grooves formed by digging one surface of the gas seal portion 58, and can be formed by laser or pressing.
- the separator 59 is a frame-like plate material made of ferritic stainless steel, and has a square opening 69 at the center thereof.
- the single cell 54 is joined to the separator 59 so as to close the opening 69.
- the separator 59 also has eight holes 71 corresponding to the bolt through holes 27 on the outer edge portion.
- the fuel electrode frame 60 is a frame-like plate material made of ferritic stainless steel having an opening 73 at the center thereof.
- the fuel electrode frame 60 also has eight holes 75 corresponding to the bolt through holes 27 on the outer edge thereof.
- the gas seal portion 61 is made of mica or vermulite, and is a frame-like plate material having a square opening 77 at the center. Eight holes 79 corresponding to the bolt through holes 27 are provided on the outer edge portion of the gas seal portion 61. It has been.
- the second hole 79b and the opening 77 communicate with each other by a communication groove 81 that extends along the side and extends in a comb shape.
- the fifth hole 79e and the opening 77 communicate with each other by a communication groove 82 that extends along the side and extends in a comb shape, and the seventh hole 79g and the opening 77 communicate with each other by a similar communication groove 83.
- the communication grooves 81 to 83 are not holes that penetrate the gas seal portion 61 in the thickness direction, but are grooves formed by digging one surface of the gas seal portion 61, and can be formed by laser or pressing.
- the second, fifth, and seventh holes 79b, 79e, and 79g and the opening 77 communicate with each other through the communication grooves 81 to 83.
- the configuration of the fuel gas heat exchanger 15a and the oxidant gas heat exchanger 15b will be briefly described.
- the oxidant gas heat exchange portion 15b is a plate-like member adjacent to the fuel cell 13D, and has a square recess 91 at the center of the surface on the fuel cell 13D side. Prepare.
- eight holes 93 corresponding to the bolt through holes 27 are provided at the outer edge of the oxidant gas heat exchanger 15b.
- the third and eighth holes 93c and 93h and the recess 91 are communicated with each other by communication grooves 95c and 95h, respectively.
- the recess 91 and the communication grooves 95c and 95h do not penetrate the oxidant gas heat exchange part 15b in the thickness direction, but are formed by digging the surface of the fuel cell 13D side.
- the fuel gas heat exchanging portion 15a is a plate-like member that is in contact with the oxidant gas heat exchanging portion 15b on one side and in contact with the fuel cell 13E on the other side.
- a square recess 101 is provided at the center of the surface on the oxidant gas heat exchanger 15b side.
- eight holes 103 corresponding to the bolt through holes 27 are provided in the outer edge portion of the fuel gas heat exchanging portion 15a.
- the first, fifth, and seventh holes 103a, 103e, and 103g and the recess 101 are communicated with each other through communication grooves 105a, 105e, and 105g, respectively.
- the concave portion 101 and the communication grooves 105a, 105e, and 105g do not penetrate the fuel gas heat exchange portion 15a in the thickness direction, but are formed by digging the surface of the fuel gas heat exchange portion 15a.
- the fuel cell stack 3 having the above-described configuration is formed by laminating the members constituting each of the above-described fuel cells 13, the fuel gas heat exchanging portion 15 a, and the oxidant gas heat exchanging portion 15 b, and in each bolt through hole 27.
- Each bolt 29 can be inserted and tightened with a nut 31.
- the fuel gas (cold gas) having a temperature lower than the temperature in the fuel cell stack 3 (for example, about 400 ° C.) is supplied from the outside of the fuel cell stack 3 to the fuel cell stack of the first bolt 29a. 3 is introduced into the internal gas flow path 41a through the opening 42a below.
- the fuel gas introduced into the internal gas flow path 41a is supplied from the internal gas flow path 41a to the fuel gas heat exchanging portion 15a, and adjacent members (for example, a first member) It is heated (preheated) by heat exchange with the five fuel cells 13E).
- the fuel gas which is a cold gas, rises in temperature due to the heating, and becomes a gas after heat exchange that is higher in temperature (for example, about 600 ° C.) than when introduced from the outside.
- the fuel gas that has become the gas after the heat exchange is supplied from the fuel gas heat exchange section 15a to the internal gas passage 41e of the fifth bolt 29e and the internal gas passage 21g of the seventh bolt 29g.
- this fuel gas is supplied from the internal gas passage 41e of the fifth bolt 29e and the internal gas passage 41g of the seventh bolt 29g to the fuel passages 47A to 47A of the first to fifth fuel cells 13A to 13E. 47E. That is, the first and second end blocks 21 and 23 (see FIG. 2B) are supplied.
- this fuel gas is discharged from the fuel passages 47A to 47E of the first to fifth fuel cells 13A to 13E to the internal gas passage 41b of the second bolt 29b.
- the temperature of the fuel gas after the heat exchange is increased by the power generation reaction in the first to fifth fuel cells 13A to 13E, and the temperature is higher than that during the heat exchange (for example, about 700 ° C.). It becomes gas.
- the fuel gas that has become the hot gas is supplied from the internal gas passage 41b of the second bolt 29b to the fuel passages 47F to 47H of the sixth to eighth fuel cells 13F to 13H. That is, it is supplied to the third end block 25 (see FIG. 2B).
- the fuel gas is discharged from the fuel flow paths 47F to 47H of the sixth to eighth fuel battery cells 13F to 13H to the internal gas flow path 41f of the sixth bolt 29f. Thereafter, as shown in FIG. 4, the fuel gas is discharged to the outside from the internal gas passage 41 f of the sixth bolt 29 f through the opening 42 f below the fuel cell stack 3.
- the flow of the oxidant gas is shown in FIG. 5, FIG. 12, and FIG. 12 and 13, the flow of the cold gas (that is, the oxidant gas introduced from the outside) is indicated by the solid line arrow, and the flow of the gas after the heat exchange (that is, the oxidant gas whose temperature has been increased by heat exchange) is shown.
- the flow of the hot gas that is, the oxidant gas whose temperature has further increased by the power generation reaction
- a dashed-dotted arrow The flow of the hot gas (that is, the oxidant gas whose temperature has further increased by the power generation reaction) is indicated by a dashed-dotted arrow.
- an oxidant gas (cold gas) having a temperature lower than the temperature in the fuel cell stack 3 (for example, about 400 ° C.) is supplied from the outside of the fuel cell stack 3 to the fuel cell of the third bolt 29c.
- the gas is introduced into the internal gas flow path 41 c through the opening 42 c above the stack 3.
- the oxidant gas introduced into the internal gas flow path 41 c is supplied from the internal gas flow path 41 c to the oxidant gas heat exchanging portion 15 b, and adjacent members ( For example, it is heated (preheated) by heat exchange with the fourth fuel battery cell 13D).
- the oxidant gas which is a cold gas, rises in temperature due to the heating, and becomes a gas after heat exchange that is higher in temperature (for example, about 500 ° C.) than when introduced from the outside.
- the oxidant gas that has become the gas after heat exchange is supplied from the oxidant gas heat exchange section 15b to the internal gas flow path 41h of the eighth bolt 29h.
- the oxidant gas is supplied from the internal gas passage 41h of the eighth bolt 29h to the air passages 49A to 49H of the first to eighth fuel cells 13A to 13H.
- the oxidant gas is discharged from the air passages 49A to 49H of the first to eighth fuel cells 13A to 13H to the internal gas passage 41d of the fourth bolt 29d.
- the temperature of the oxidant gas that is the gas after heat exchange is increased by the power generation reaction in the first to eighth fuel cells 13A to 13H, and is higher than that during heat exchange (for example, about 600 ° C.). It becomes hot gas.
- the oxidant gas that has become the hot gas is discharged from the internal gas flow path 41d of the fourth bolt 29d to the outside through the opening 42d below the fuel cell stack 3, as shown in FIG.
- the f) Next, the temperature distribution in the planar direction caused by the flow of the fuel gas and the oxidant gas will be described. Due to the flow of the fuel gas and the oxidant gas described above, in the fuel cell stack 3, a temperature distribution is generated in the planar direction (that is, the direction in which the plate-like fuel cells 13 spread: the direction perpendicular to the stacking direction).
- the fuel cell stack 3 when the fuel cell stack 3 is viewed from the stacking direction (vertical direction in FIGS. 10 and 12), the fuel cell stack 3 has a flow path (manifold) in the stacking direction of the fuel gas and the oxidant gas. A temperature distribution in the plane direction is generated.
- the temperature around the first internal gas flow path 41a of the first bolt 29a into which the fuel gas that is a cold gas is introduced from the outside is low.
- the fifth and seventh internal gas flow paths of the fifth and seventh bolts 29e and 29g through which the fuel gas obtained by heat exchange of the fuel gas that is the cold gas passes.
- the temperature around 41e and 41g is higher than the temperature around the first internal gas channel 41a of the first bolt 29a through which the fuel gas, which is a cold gas, passes.
- the temperature around the second internal gas flow path 41b of the second bolt 29b through which the fuel gas heated by the power generation reaction (that is, the fuel gas that is a hot gas) passes is as follows.
- the temperature around the fifth and seventh internal gas flow paths 41e and 41g of the fifth and seventh bolts 29e and 29g through which the fuel gas that is the heat exchange gas passes is higher.
- the fuel gas that is the hot gas is heated again by the power generation reaction (that is, the fuel gas that is the hot gas whose temperature has further increased) through the sixth internal gas passage 41f of the sixth bolt 29f.
- the ambient temperature is the highest.
- the temperature around the third internal gas passage 41c of the third bolt 29c into which the oxidant gas that is a cold gas is introduced from the outside is low.
- the temperature around the eighth internal gas flow path 41h of the eighth bolt 29h through which the oxidant gas obtained by heat exchange of the oxidant gas that is the cold gas that is, the oxidant gas that is the heat-exchanged gas
- the temperature around the first and third internal gas flow paths 41a and 41c (and hence the first and third bolt through holes 27a and 27c) into which the cold gas is introduced is the lowest.
- the temperature around the fifth, seventh, and eighth internal gas flow paths 41e, 41g, and 41h (hence the fifth, seventh, and eighth bolt through holes 27e, 27g, and 27h) through which the gas passes after heat exchange is Temperature around the second, fourth, and sixth internal gas flow paths 41b, 41d, and 41f through which the hot gas passes (thus, the second, fourth, and sixth bolt through holes 27b, 27d, and 27f). Is the highest.
- fuel gas or oxidant gas is externally supplied to the fuel cell as internal gas flow paths (hereinafter also referred to as “manifolds”) 41a to 41h for circulating fuel gas and oxidant gas in the stacking direction.
- Manifolds 41a and 41c for cold gas introduced into the stack 3 and manifolds 41b, 41d and 41f for hot gas for discharging fuel gas or oxidant gas from the fuel cells 13A to 13H are provided.
- the cold gas manifolds 41a and 41c are all hot gas manifolds 41b and 41d. , 41f, and the hot gas manifolds 41b, 41d, 41f are configured not to be adjacent to the other hot gas manifolds 41b, 41d, 41f.
- all of the cold gas manifolds 41a and 41c having a low temperature are adjacent to the hot gas manifolds 41b, 41d and 41f having a temperature higher than that of the cold gas.
- the high hot gas manifolds 41b, 41d, and 41f are not adjacent to the other hot gas manifolds 41b, 41d, and 41f. That is, the hot gas manifolds 41b, 41d, and 41f are not adjacent to each other. Therefore, the temperature difference in the planar direction of the fuel cell stack 3 can be reduced, that is, the temperature in the planar direction of the fuel cell 13 can be made uniform.
- the manifolds 41b, 41d, and 41f for hot gas are not adjacent to each other, the in-plane temperature distribution of the fuel battery cell 13 is small, and it is difficult to produce a part where the temperature is excessively high. There is an advantage that can be suppressed.
- the manifolds 41e, 41g, and 41h for the heat exchange gas for flowing the fuel gas or the oxidant gas exchanged in the fuel cell stack 3 are provided. At least one of the gas manifolds 41e, 41g, 41h and the cold gas manifolds 41a, 41c is adjacent to the gas manifolds 41b, 41d, 41f.
- the hot gas manifolds 41b, 41d, and 41f having the highest temperature are adjacent to the heat-exchanged gas manifolds 41e, 41g, and 41h and the cold gas manifolds 41a and 41c that have a lower temperature. Therefore, the temperature in the planar direction of the fuel cell 13 can be made uniform.
- the manifolds 41a to 41h are arranged in a row that is bent in the middle, and cold gas is placed on both sides of the hot gas manifolds 41b, 41d, and 41f. Since the manifolds 41a, 41c for heat exchange and the manifolds 41e, 41g, 41h for gas after heat exchange are adjacent to each other, the temperature in the planar direction of the fuel cell 13 can be made more uniform.
- manifolds 41a to 41h are arranged in a line in a plan view, and on both sides of the cold gas manifold 41c having the highest flow rate for the oxidizing gas, Manifolds 41b and 41d are adjacent to each other.
- the temperature in the planar direction of the fuel cells can be made more uniform.
- the manifold 41c for the oxidant gas having the highest flow rate is adjacent to the manifold 41d for the oxidant gas having the highest temperature, the oxidant gas is provided.
- the periphery of the hot gas manifold 41d can be effectively cooled. Thereby, the temperature in the planar direction of the fuel cell can be made more uniform.
- the flow rate of oxidant gas is 2 to 5 times the flow rate of fuel gas.
- FIG. 1 In the fuel cell stack according to the second embodiment, the fuel gas heat exchange unit as in the first embodiment is not used, and the fuel gas is introduced into the fuel cell stack from two different manifolds from the outside. To each fuel cell.
- fuel gas is introduced from the outside into the fifth and ninth internal gas flow paths 41e and 41g of the fifth and seventh bolts 29e and 29g.
- this fuel gas is supplied to the first to fifth fuel cells 13A to 13E from the fifth and ninth internal gas flow paths 41e and 41g of the fifth and seventh bolts 29e and 29g.
- the fuel gas is supplied from the first to fifth fuel cells 13A to 13E as the hot gas to the second internal gas channel 41b of the second bolt 29b.
- the fuel gas is supplied from the second internal gas flow path 41b of the second bolt 29b to the sixth to eighth fuel cells 13F to 13H, and then discharged to the outside.
- the first bolt 29a is not used as a gas flow path. Further, since the flow of the oxidizing gas is the same as that in the first embodiment, the description thereof is omitted. b) Next, the planar temperature distribution caused by the flow of the fuel gas and the oxidant gas will be described.
- the fuel cell stack 111 when the fuel cell stack 111 is viewed from the stacking direction (vertical direction in FIG. 15), the fuel cell stack 111 has a flow path (that is, a manifold) in the stacking direction of the fuel gas and the oxidant gas. A temperature distribution in the plane direction is generated.
- the ambient temperature of 41g is low.
- the temperature around the second internal gas channel 41b of the second bolt 29b through which the fuel gas that is the cold gas is heated by the power generation reaction (that is, the fuel gas that is the hot gas) passes through the cold.
- the temperature is higher than the surrounding temperature of the fifth and seventh internal gas passages 41e and 41g of the fifth and seventh bolts 29e and 29g through which the fuel gas as gas passes.
- the sixth internal gas flow path 41f of the sixth bolt 29f into which the fuel gas that is the hot gas is again heated by the power generation reaction that is, the fuel gas that is a hot gas whose temperature has further increased
- the ambient temperature is the highest.
- the oxidant gas side is the same as that of the first embodiment, and the third internal gas channel 41c of the third bolt 29c into which the cold gas is introduced.
- the ambient temperature is low
- the periphery of the eighth internal gas flow path 41h of the eighth bolt 29h through which the gas passes after heat exchange is higher than that
- the fourth internal gas flow path 41d of the fourth bolt 29d through which the hot gas passes Ambient temperature is highest.
- the third, fifth, and seventh internal gas flow paths 41c, 41e, and 41g into which cold gas is introduced has the lowest ambient temperature, and the ambient temperature of the eighth internal gas flow path 41h (and hence the eighth bolt through hole 27h) through which the gas passes after heat exchange is higher than that, so that the hot gas passes therethrough.
- the temperature around the second, fourth, and sixth internal gas flow paths 41b, 41d, and 41f is the highest.
- the second embodiment has the same effects as the first embodiment and has an advantage that the configuration of the flow path and the like can be simplified because the fuel gas heat exchange section is not used.
- the fuel cell stack according to the third embodiment basically has the same configuration as that of the second embodiment, except that fuel gas is introduced into the fuel cell stack from the outside with one manifold. a) First, the configuration of the fuel cell stack according to the third embodiment will be described.
- the interconnector 57a, the gas seal portion 58, the separator 59 to which the single cell 54 is joined, the fuel electrode frame 60, The gas seal portion 61, the interconnector 57a, the oxidant gas heat exchange portion 15b, and the like are stacked.
- the fuel gas is introduced from the outside only into the seventh internal gas passage 41g of the seventh bolt 29g.
- the fuel gas may be introduced only into the fifth internal gas passage 41e of the fifth bolt 29e.
- this fuel gas is supplied from the seventh internal gas flow path 41g of the seventh bolt 29g to the first to fifth fuel cells 13A to 13E.
- the fuel gas is supplied from the first to fifth fuel cells 13A to 13E as the hot gas to the second internal gas channel 41b of the second bolt 29b.
- the fuel gas is supplied from the second internal gas flow path 41b of the second bolt 29b to the sixth to eighth fuel cells 13F to 13H, and then discharged to the outside.
- the first and fifth bolts 29a and 29e are not used as gas flow paths.
- the fuel cell stack 121 when the fuel cell stack 121 is viewed from the stacking direction (vertical direction in FIG. 18), the fuel cell stack 121 has a flow path (that is, a manifold) in the stacking direction of the fuel gas and the oxidant gas. A temperature distribution in the plane direction is generated.
- the temperature around the seventh internal gas passage 41g of the seventh bolt 29g into which the fuel gas that is a cold gas is introduced from the outside is low.
- the temperature around the second internal gas channel 41b of the second bolt 29b through which the fuel gas that is the cold gas is heated by the power generation reaction passes through the cold.
- the temperature is higher than the temperature around the seventh internal gas passage 41g of the seventh bolt 29g through which the fuel gas, which is a gas, passes.
- the sixth internal gas flow path 41f of the sixth bolt 29f into which the fuel gas that is the hot gas is again heated by the power generation reaction that is, the fuel gas that is a hot gas whose temperature has further increased
- the ambient temperature is the highest.
- the oxidant gas side is the same as that of the first embodiment, and the third internal gas flow path 41c of the third bolt 29c into which the cold gas is introduced.
- the ambient temperature is low
- the periphery of the eighth internal gas flow path 41h of the eighth bolt 29h through which the gas passes after heat exchange is higher than that
- the fourth internal gas flow path 41d of the fourth bolt 29d through which the hot gas passes Ambient temperature is highest.
- the temperature around the third and seventh internal gas flow paths 41c and 41g (thus, the third and seventh bolt through holes 27c and 27g) into which the cold gas is introduced is the lowest, Second, fourth, and sixth internal gas flows through which the hot gas passes because the temperature around the eighth internal gas flow passage 41h (and hence the eighth bolt through hole 27h) through which the gas passes after heat exchange is higher.
- the temperature around the passages 41b, 41d, 41f (thus, the second, fourth, and sixth bolt through holes 27b, 27d, 27f) is the highest.
- the temperatures inside and around the first and fifth bolt through holes 27a and 27e, which are not gas flow paths, are substantially the same as the temperature of the surrounding structures. Therefore, according to the above-described configuration, the third embodiment has advantages that the same effects as those of the second embodiment can be obtained and the configuration of the flow path and the like can be further simplified.
- FIG. 1 The fuel cell stack according to the fourth embodiment has basically the same configuration as that of the first embodiment, except that the heat exchanging portion is disposed outside the fuel cell stack.
- a heat exchanging unit 133 is disposed below the fuel cell stack 131.
- the heat exchange unit 133 includes an oxidant gas heat exchange unit 135 that performs heat exchange of the oxidant gas, and a fuel gas heat exchange unit 137 that performs heat exchange of the fuel gas.
- the oxidant gas heat exchanging section 1335 the first oxidant gas chamber 139 through which the low-temperature oxidant gas introduced from the outside passes, and the oxidant gas after power generation (that is, from the low-temperature oxidant gas).
- An oxidant gas second chamber 141 through which a high-temperature oxidant gas flows is disposed adjacently.
- a flowing fuel gas second chamber 145 is disposed adjacently.
- the oxidant gas is introduced from the outside into the oxidant gas second chamber 141 through the fuel cell stack 131. Thereafter, the fuel cell stack 131 is introduced into each air flow path (not shown) of each fuel cell 13. Then, the oxidant gas after power generation is introduced into the oxidant gas first chamber 139 from each air flow path and then discharged to the outside.
- the fuel gas is introduced into the first fuel gas chamber 143 from the outside, and then introduced into each fuel flow path (not shown) of each fuel cell 13 of the fuel cell stack 131. .
- the fuel gas after power generation is introduced into the second fuel gas chamber 145 from each fuel flow path, and then discharged to the outside.
- the same effect as that of the first embodiment is obtained by the above-described configuration.
- the temperature distribution in each manifold in plan view is the same as that in the first embodiment (see FIGS. 14A-14C).
- the manifold in the claims corresponds to, for example, an internal gas flow path for flowing fuel gas or oxidant gas in the stacking direction in the first embodiment.
- the present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the present invention.
- the flow path of the fuel gas has a serial flow structure (that is, after the fuel gas is once supplied to a certain fuel cell, the fuel gas discharged from the fuel cell is changed to another fuel cell).
- the flow path of the oxidant gas is also a serial flow structure (that is, once the oxidant gas is supplied to a certain fuel battery cell, the oxidant gas discharged from the fuel battery cell is A structure for supplying to other fuel cells may be adopted.
- the fuel gas heat exchanger and the oxidant gas heat exchanger are provided, but at least the oxidant gas heat exchanger may be used. That is, the fuel gas may be supplied to each fuel cell through the manifold without exchanging heat at the heat exchanging unit.
- the internal gas flow paths formed in the axial direction of the bolts reach both ends in the stacking direction of the fuel cell stack. It may be formed.
- a sufficient space for example, a cylindrical space in which gas can flow is provided between the bolt and the bolt through-hole, and the space between the internal gas flow path and each fuel cell through the space.
- the fuel gas or oxidant gas may be distributed (supplied or discharged).
- a solid bolt is used as the bolt, and a sufficient space (for example, a cylindrical space) through which gas can flow is provided between the bolt and the through hole for the bolt. You may perform distribution (supply or discharge) of fuel gas and oxidant gas between each fuel battery cell.
- the gas flow between the outside and the space can be realized, for example, by providing a groove or the like extending along the axial direction on the outer peripheral surface of the bolt at the axial end of the bolt.
- the fuel cell type is effective if the fuel cell stack is a type (solid oxide type, phosphoric acid type, molten carbonate type) in which the fuel cell stack is at a high temperature (for example, 150 ° C. or higher and 1000 ° C. or lower during operation). It is not limited to oxide fuel cells (SOFC).
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Abstract
Description
SOFCとしては、例えば板状の固体電解質層(固体酸化物層)の一方の面に燃料極層を備えるとともに他方の面に空気極層を備えた単セルを有する燃料電池セルを、多数積層して燃料電池スタックを形成したものが知られている。
つまり、特許文献2、3に記載の技術では、燃料電池スタックを積層方向に貫くように形成された複数のマニホールドによって、温度の異なるガスを通過させているが、通過させるガスの温度は低温から高温まで様々であるので、各燃料電池セルにおける各マニホールドの周囲の温度が異なるという問題があった。
詳しくは、燃料電池セルに面内温度分布があると、セル面内において抵抗分布が発生して、セル面内の電流分布や電圧分布が生じる。その結果、セル面内での電流の横流れ(即ち面方向における流れ)が生じ、安定した高い出力が得られないという問題があった。
また、燃料電池セルの面内温度分布によって、一部に過度に温度が高い部分が生じると、金属部材が劣化するという問題もあった。
また、マニホールドとは、複数の燃料電池セルを積層方向に貫通して、燃料ガス又は酸化剤ガスを流通させる燃料電池スタックの内部ガス流路であり、このマニホールドは、各燃料電池セルの燃料ガスの流路又は酸化剤ガスの流路に、分岐路(たとえば、連通溝)を介して連通している。
また、熱交換部は、燃料電池スタックの内部に配置されていても、外部に配置されていてもよい。
第2局面の燃料電池スタックでは、熱交換部の好ましい位置を例示している。これにより、熱交換部の周囲の燃料電池セル等との間で効率的に熱交換を行うことができる。
よって、冷ガス用のマニホールドの周囲温度を効果的に維持できるので、燃料電池セルの平面方向における温度をより均一化できる。
(7)本発明の第7局面の燃料電池モジュールは、前記第1~5局面のいずれかに記載の燃料電池スタックを備えている。
ここで、燃料電池モジュールとは、燃料電池スタック以外に、発電のために用いられる例えば断熱容器及び断熱容器内に収容されたバーナーなどを備えた構成である。
この場合には、マニホールド中の燃料ガス及び酸化剤ガスは、燃料電池スタックの積層方向に両端に到るまで供給されるので、燃料電池スタックの積層方向における温度も均一化できるという利点がある。
9…燃料電池モジュール
13…燃料電池セル
15、15a、15b、133…熱交換部
41a、41b、41c、41d、41e、41f、41g、41h…内部ガス流路(マニホールド)
51…固体電解質層
52…燃料極層
53…空気極層
図1に示す様に、燃料電池システム1は、燃料電池スタック3とバーナー5とを断熱容器7内に収容した燃料電池モジュール9を備えており、燃料電池スタック3に、燃料ガス(例えば水素:F)と酸化剤ガス(例えば空気(詳しくは空気中の酸素):O)とを供給して発電を行うものである。なお、以下では、図1における上下を、燃料電池スタック3における上下として説明する。
図3A-3Bに示すように、燃料電池スタック3は、板状の発電セルである燃料電池セル13が厚み方向に複数個積層された燃料電池スタック本体26と、燃料電池スタック本体26を積層方向(図3Bの上下方向)に貫く8箇所のボルト用貫通孔27a~27h(27と総称する)と、ボルト用貫通孔27に貫挿された8本のボルト29a~29h(29と総称する)と、ボルト29に螺合するナット31とを備えている。
b)次に、ボルト29の構成について詳細に説明する。
<燃料ガスの流路>
図4に示す様に、第1ボルト29aには、燃料ガス用の内部ガス流路41aが設けられている。この内部ガス流路41aは開口部42aを介して外部(即ち燃料電池スタック3の下方)と連通しているので、内部ガス流路41aには、外部から燃料ガスが供給される。
この第2ボルト29bには、内部ガス流路41bと連通するように、径方向に延びる貫通孔である複数の入口用横穴43bと複数の出口用横穴45bが設けられている。なお、第1~第5燃料電池セル13A~13Eの各燃料流路47A~47Eと各入口用横穴43bとがそれぞれ連通し、各出口用横穴45bと第6~第8燃料電池セル13F~13Hの各燃料流路47F~47Hとがそれぞれ連通するように構成されている。
図5に示す様に、第3ボルト29cには、酸化剤ガス用の内部ガス流路41cが設けられている。この内部ガス流路41cは開口部42cを介して外部(即ち燃料電池スタック3の下方)と連通しているので、内部ガス流路41cには、外部から酸化剤ガスが供給される。
この第8ボルト29hには、内部ガス流路41hと連通するように、径方向に延びる貫通孔である入口用横穴43hと複数の出口用横穴45hが設けられている。なお、酸化剤ガス用熱交換部15bと入口用横穴43hとが連通し、各出口用横穴45hと第1~第8燃料電池セル13A~13Hの各空気流路49A~49H(49と総称する)とがそれぞれ連通するように構成されている。
図6に示すように、燃料電池セル13は、いわゆる燃料極支持膜形タイプの板状セルである。
固体電解質層51の材料としては、YSZ、ScSZ、SDC、GDC、ペロブスカイト系酸化物等の材料が使用できる。また、燃料極層52の材料としては、Ni及びNiとセラミックとのサーメットが使用でき、空気極層53の材料としては、ペロブスカイト系酸化物などが使用できる。
図7及び図8に示す様に、酸化剤ガス用熱交換部15bは、燃料電池セル13Dに隣接する板状部材であって、燃料電池セル13D側の面の中心に、正方形の凹部91を備える。
<燃料ガスの流れ>
燃料ガスの流れを、前記図4及び図10及び図11に示す。図10及び図11では、冷ガス(即ち外部から導入される燃料ガス)の流れを実線の矢印で示し、熱交換後ガス(即ち熱交換されて温度が上昇した燃料ガス)の流れを破線の矢印で示し、熱ガス(即ち発電反応によって更に温度が上昇した燃料ガス)の流れを一点鎖線の矢印で示す。
次に、この燃料ガスは、第5ボルト29eの内部ガス流路41eと第7ボルト29gの内部ガス流路41gとから、第1~第5燃料電池セル13A~13Eの各燃料流路47A~47Eに供給される。つまり、第1、第2端部ブロック21、23(図2B参照)に供給される。
その後、図4に示す様に、燃料ガスは、第6ボルト29fの内部ガス流路41fから、燃料電池スタック3の下方の開口部42fを介して、外部に排出される。
<酸化剤ガスの流れ>
酸化剤ガスの流れを、前記図5及び図12及び図13に示す。図12及び図13では、冷ガス(即ち外部から導入される酸化剤ガス)の流れを実線の矢印で示し、熱交換後ガス(即ち熱交換されて温度が上昇した酸化剤ガス)の流れを破線の矢印で示し、熱ガス(即ち発電反応によって更に温度が上昇した酸化剤ガス)の流れを一点鎖線の矢印で示す。
次に、この酸化剤ガスは、第8ボルト29hの内部ガス流路41hから、第1~第8燃料電池セル13A~13Hの各空気流路49A~49Hに供給される。
f)次に、前記燃料ガス及び酸化剤ガスの流れによって生ずる平面方向の温度分布について説明する。
上述した燃料ガス及び酸化剤ガスの流れによって、燃料電池スタック3では、平面方向(即ち板状の燃料電池セル13の広がる方向:積層方向と垂直方向)において温度分布が生じる。
次に、その冷ガスである燃料ガスが熱交換された燃料ガス(即ち熱交換後ガスである燃料ガス)が通過する第5、第7ボルト29e、29gの第5、第7内部ガス流路41e、41gの周囲の温度は、冷ガスである燃料ガスが通過する第1ボルト29aの第1内部ガス流路41aの周囲の温度より高い。
次に、その冷ガスである酸化剤ガスが熱交換された酸化剤ガス(即ち熱交換後ガスである酸化剤ガス)が通過する第8ボルト29hの第8内部ガス流路41hの周囲の温度は、冷ガスである酸化剤ガスが通過する第3ボルト29cの第3内部ガス流路41cの周囲の温度より高い。
・本実施例1では、燃料ガスや酸化剤ガスを積層方向に流通させる内部ガス流路(以下「マニホールド」と称することもある)41a~41hとして、外部から燃料ガス又は酸化剤ガスを燃料電池スタック3内に導入する冷ガス用のマニホールド41a、41cと、各燃料電池セル13A~13Hから燃料ガス又は酸化剤ガスを排出する熱ガス用のマニホールド41b、41d、41fとを有している。
・その上、本実施例1では、最も温度が高い酸化剤ガスの熱ガス用のマニホールド41dに、最も流量が多い酸化剤ガスの冷ガス用のマニホールド41cが隣接しているので、酸化剤ガスの熱ガス用のマニホールド41dの周囲を効果的に冷却できる。これによって、燃料電池セルの平面方向における温度をより一層均一化できる。
なお、実施例1と同様な構成については同じ番号を用いて説明する。
本実施例2の燃料電池スタックでは、実施例1のような燃料ガス用熱交換部を使用せず、外部から燃料電池スタックに異なる2つのマニホールドで燃料ガスを導入し、その燃料ガスを各マニホールドから各燃料電池セルに分配する。
図15に示すように、本実施例2の燃料電池スタック111では、前記実施例1と同様に、インターコネクタ57a、ガスシール部58、単セル54が接合されたセパレータ59、燃料極フレーム60、ガスシール部61、インターコネクタ57b、酸化剤ガス用熱交換部15bなど積層されている。
次に、この燃料ガスは、第5、第7ボルト29e、29gの第5、第9内部ガス流路41e、41gから第1~第5燃料電池セル13A~13Eに供給される。
次に、燃料ガスは、第2ボルト29bの第2内部ガス流路41bから第6~第8燃料電池セル13F~13Hに供給され、その後、外部に排出される。
また、酸化剤ガスの流れは前記実施例1と同様であるので、その説明は省略する。
b)次に、燃料ガス及び酸化剤ガスの流れによって生ずる平面方向の温度分布について説明する。
従って、上述した構成によって、本実施例2では、前記実施例1と同様な効果を奏するとともに、燃料ガス用熱交換部を用いないので、流路等の構成を簡易化できるという利点がある。
なお、実施例1と同様な構成については同じ番号を用いて説明する。
a)まず、本実施例3の燃料電池スタックの構成について説明する。
次に、燃料ガスは、第1~第5燃料電池セル13A~13Eから、熱ガスとして第2ボルト29bの第2内部ガス流路41bに供給される。
なお、第1、第5ボルト29a、29eは、ガスの流路として使用されない。
b)次に、燃料ガス及び酸化剤ガスの流れによって生ずる平面方向の温度分布について説明する。
次に、その冷ガスである燃料ガスが発電反応によって加熱された燃料ガス(即ち熱ガスである燃料ガス)が通過する第2ボルト29bの第2内部ガス流路41bの周囲の温度は、冷ガスである燃料ガスが通過する第7ボルト29gの第7内部ガス流路41gの周囲の温度より高い。
従って、上述した構成によって、本実施例3では、前記実施例2と同様な効果を奏するとともに、流路等の構成を一層簡易化できるという利点がある。
なお、実施例1と同様な構成については同じ番号を用いて説明する。
本実施例4の燃料電池スタックは、基本的に実施例1と同様な構成であるが、熱交換部が、燃料電池スタックの外側に配置してある点が異なる。
図21A-21Bに模式的に示すように、燃料電池スタック131の下部には、熱交換部133が配置されている。この熱交換部133は、酸化剤ガスの熱交換を行う酸化剤ガス用熱交換部135と、燃料ガスの熱交換を行う燃料ガス用熱交換部137とを備えている。
なお、酸化剤ガスや燃料ガスの流れるマニホールドの平面視における配置は、前記実施例1の図14A-14Cに示す配置と同様である。
図21Aに示すように、酸化剤ガスは、外部から燃料電池スタック131内を介して、酸化剤ガス用第2室141に導入される。その後、燃料電池スタック131の各燃料電池セル13の各空気流路(図示せず)に導入される。そして、発電後の酸化剤ガスは、各空気流路から酸化剤ガス用第1室139に導入された後に、外部に排出される。
図21Bに示すように、燃料ガスは、外部から燃料ガス用第1室143に導入され、その後、燃料電池スタック131の各燃料電池セル13の各燃料流路(図示せず)に導入される。そして、発電後の燃料ガスは、各燃料流路から燃料ガス用第2室145に導入された後に、外部に排出される。
[特許請求の範囲の構成と実施例の構成との関係]
特許請求の範囲のマニホールドは、例えば実施例1において、積層方向に燃料ガスや酸化剤ガスを流す内部ガス流路に該当する。
(1)例えば、前記各実施例では、燃料ガスの流路をシリアルフロー構造(即ち、一旦ある燃料電池セルに燃料ガスを供給した後、その燃料電池セルから排出された燃料ガスを他の燃料電池セルに供給する構造)としたが、酸化剤ガスの流路もシリアルフロー構造(即ち、一旦ある燃料電池セルに酸化剤ガスを供給した後、その燃料電池セルから排出された酸化剤ガスを他の燃料電池セルに供給する構造)としてもよい。
さらに、燃料電池のタイプは、燃料電池スタックが高温(例えば稼働時に150℃以上1000℃以下)になるタイプ(固体酸化物形、リン酸形、溶融炭酸塩形)であれば効果があり、固体酸化物形燃料電池(SOFC)に限定されない。
Claims (7)
- 電解質層と、前記電解質層の一方の面に設けられて燃料ガスと接する燃料極層と、前記電解質層の他方の面に設けられて酸化剤ガスと接する空気極層と、を備えた燃料電池セルを、複数積層した燃料電池スタックであって、
前記燃料電池スタックは、前記積層方向における一部の前記燃料電池セルに、前記燃料ガス及び前記酸化剤ガスの少なくとも一方を供給するとともに、前記一部の前記燃料電池セルから排出される前記燃料ガス及び前記酸化剤ガスの少なくとも一方を、前記積層方向における前記一部の前記燃料電池セル以外の前記燃料電池セルに供給する構成を備え、
前記燃料電池スタックには、複数の前記燃料電池セルを前記積層方向に貫通して、前記燃料ガス及び前記酸化剤ガスの少なくとも一方を流通させるマニホールドを複数有するとともに、
前記マニホールドとして、外部から前記燃料ガス又は前記酸化剤ガスを前記燃料電池スタック内に導入する冷ガス用のマニホールドと、前記燃料電池セルから前記燃料ガス又は前記酸化剤ガスを排出する熱ガス用のマニホールドと、少なくとも前記燃料ガス又は前記酸化剤ガスの一方が導入される熱交換部にて熱交換された熱交換後ガスを流通させる熱交換後ガス用のマニホールドと、を有し、
更に、前記燃料電池スタックを積層方向から見た場合に、
前記冷ガス用のマニホールドは、全て前記熱ガス用のマニホールドに隣接するとともに、前記熱ガス用のマニホールドは、他の前記熱ガス用のマニホールドに隣接していないことを特徴とする燃料電池スタック。 - 前記熱交換部は、前記燃料電池スタックの内部に設けられ、隣接する前記燃料電池セルとの間で熱交換を行うことを特徴とする請求項1に記載の燃料電池スタック。
- 前記燃料電池スタックを積層方向から見た場合に、
前記熱ガス用のマニホールドには、前記熱交換後ガス用のマニホールド及び前記冷ガス用のマニホールドの少なくとも一方が隣接していることを特徴とする請求項1又は2に記載の燃料電池スタック。 - 前記燃料電池スタックを積層方向から見た場合に、
前記熱ガス用のマニホールドの両側には、前記冷ガス用のマニホールド及び前記熱交換後ガス用のマニホールドの少なくとも一方が隣接していることを特徴とする請求項3に記載の燃料電池スタック。 - 前記燃料電池スタックを積層方向から見た場合に、
前記酸化剤ガスの前記熱ガス用のマニホールドには、前記酸化剤ガスの前記冷ガス用のマニホールドが隣接していること特徴とする請求項1~4のいずれか1項に記載の燃料電池スタック。 - 前記燃料電池スタックを積層方向から見た場合に、
前記酸化剤ガスの前記冷ガス用のマニホールドの両側には、前記熱ガス用のマニホールドが隣接していることを特徴とする請求項1~5のいずれか1項に記載の燃料電池スタック。 - 前記請求項1~6のいずれか1項に記載の燃料電池スタックを備えたことを特徴とする燃料電池モジュール。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018060627A (ja) * | 2016-10-03 | 2018-04-12 | 三浦工業株式会社 | 多段式燃料電池システム |
WO2018083911A1 (ja) * | 2016-11-04 | 2018-05-11 | 日本特殊陶業株式会社 | 電気化学反応セルスタック |
EP3282513A3 (en) * | 2016-08-11 | 2018-05-16 | General Electric Company | Multi-stack fuel cell systems and heat exchanger assemblies |
JP2020074274A (ja) * | 2019-09-30 | 2020-05-14 | 三浦工業株式会社 | 多段式燃料電池システム |
JP2022505580A (ja) * | 2018-10-26 | 2022-01-14 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | 格納筐体内に配置された電気機械ユニットを備えた電気化学装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3073092B1 (fr) * | 2017-10-26 | 2022-03-18 | Commissariat Energie Atomique | Ensemble d'un empilement a oxydes solides de type soec/sofc et d'un systeme de serrage integrant un systeme d'echange thermique |
WO2020123389A1 (en) * | 2018-12-10 | 2020-06-18 | Utility Global, Inc. | Balance of plant for electrochemical reactors |
JP7203668B2 (ja) | 2019-03-29 | 2023-01-13 | 大阪瓦斯株式会社 | 電気化学モジュール、電気化学装置及びエネルギーシステム |
US11777126B2 (en) | 2019-12-05 | 2023-10-03 | Utility Global, Inc. | Methods of making and using an oxide ion conducting membrane |
FR3112656B1 (fr) * | 2020-07-16 | 2022-12-02 | Commissariat Energie Atomique | Dispositif electrochimique |
US11784325B2 (en) * | 2021-09-30 | 2023-10-10 | Nissan North America, Inc. | Frameless fuel cell stack having hollow fasteners |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04181657A (ja) * | 1990-11-15 | 1992-06-29 | Sanyo Electric Co Ltd | 燃料電池システム |
JPH0722059A (ja) * | 1993-06-29 | 1995-01-24 | Sanyo Electric Co Ltd | 平板型固体電解質燃料電池 |
JP2001256993A (ja) | 2000-03-13 | 2001-09-21 | Fuji Electric Co Ltd | 高濃度水素ガスを使用する燃料電池積層体 |
JP2002260708A (ja) * | 2001-02-28 | 2002-09-13 | Toshiba Corp | 燃料電池積層構造体 |
US20060257709A1 (en) * | 2003-03-12 | 2006-11-16 | Ludger Blum | Modularly built high-temperature fuel cell system |
JP2008153073A (ja) | 2006-12-18 | 2008-07-03 | Fuji Electric Holdings Co Ltd | 色変換フィルタおよびこれを用いた多色発光デバイス |
WO2008153073A1 (ja) * | 2007-06-11 | 2008-12-18 | Ngk Spark Plug Co., Ltd. | 固体電解質形燃料電池 |
JP2010038869A (ja) | 2008-08-08 | 2010-02-18 | Yazaki Corp | ガス検出装置 |
JP2010165629A (ja) * | 2009-01-19 | 2010-07-29 | Ngk Spark Plug Co Ltd | 固体電解質形燃料電池 |
WO2013065757A1 (ja) * | 2011-11-02 | 2013-05-10 | 日本特殊陶業株式会社 | 燃料電池 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2724867C (en) | 2008-10-02 | 2017-06-06 | Ngk Spark Plug Co., Ltd. | Solid oxide fuel cell apparatus |
-
2014
- 2014-12-10 KR KR1020167016116A patent/KR101822771B1/ko active IP Right Grant
- 2014-12-10 DK DK14869312.0T patent/DK3082188T3/en active
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- 2014-12-10 WO PCT/JP2014/082676 patent/WO2015087913A1/ja active Application Filing
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- 2014-12-10 CN CN201480067161.0A patent/CN105814727B/zh active Active
- 2014-12-10 EP EP14869312.0A patent/EP3082188B1/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04181657A (ja) * | 1990-11-15 | 1992-06-29 | Sanyo Electric Co Ltd | 燃料電池システム |
JPH0722059A (ja) * | 1993-06-29 | 1995-01-24 | Sanyo Electric Co Ltd | 平板型固体電解質燃料電池 |
JP2001256993A (ja) | 2000-03-13 | 2001-09-21 | Fuji Electric Co Ltd | 高濃度水素ガスを使用する燃料電池積層体 |
JP2002260708A (ja) * | 2001-02-28 | 2002-09-13 | Toshiba Corp | 燃料電池積層構造体 |
US20060257709A1 (en) * | 2003-03-12 | 2006-11-16 | Ludger Blum | Modularly built high-temperature fuel cell system |
JP2008153073A (ja) | 2006-12-18 | 2008-07-03 | Fuji Electric Holdings Co Ltd | 色変換フィルタおよびこれを用いた多色発光デバイス |
WO2008153073A1 (ja) * | 2007-06-11 | 2008-12-18 | Ngk Spark Plug Co., Ltd. | 固体電解質形燃料電池 |
JP2010038869A (ja) | 2008-08-08 | 2010-02-18 | Yazaki Corp | ガス検出装置 |
JP2010165629A (ja) * | 2009-01-19 | 2010-07-29 | Ngk Spark Plug Co Ltd | 固体電解質形燃料電池 |
WO2013065757A1 (ja) * | 2011-11-02 | 2013-05-10 | 日本特殊陶業株式会社 | 燃料電池 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3282513A3 (en) * | 2016-08-11 | 2018-05-16 | General Electric Company | Multi-stack fuel cell systems and heat exchanger assemblies |
EP3595067A1 (en) * | 2016-08-11 | 2020-01-15 | General Electric Company | Multi-stack fuel cell systems and heat exchanger assemblies |
US10862141B2 (en) | 2016-08-11 | 2020-12-08 | Cummins Enterprise Llc | Multi-stack fuel cell systems and heat exchanger assemblies |
JP2018060627A (ja) * | 2016-10-03 | 2018-04-12 | 三浦工業株式会社 | 多段式燃料電池システム |
WO2018083911A1 (ja) * | 2016-11-04 | 2018-05-11 | 日本特殊陶業株式会社 | 電気化学反応セルスタック |
JPWO2018083911A1 (ja) * | 2016-11-04 | 2018-11-08 | 日本特殊陶業株式会社 | 電気化学反応セルスタック |
JP2022505580A (ja) * | 2018-10-26 | 2022-01-14 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | 格納筐体内に配置された電気機械ユニットを備えた電気化学装置 |
JP2020074274A (ja) * | 2019-09-30 | 2020-05-14 | 三浦工業株式会社 | 多段式燃料電池システム |
Also Published As
Publication number | Publication date |
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KR101822771B1 (ko) | 2018-01-26 |
EP3082188B1 (en) | 2018-10-17 |
US20160293980A1 (en) | 2016-10-06 |
JP6093452B2 (ja) | 2017-03-08 |
CA2930893A1 (en) | 2015-06-18 |
KR20160086931A (ko) | 2016-07-20 |
EP3082188A1 (en) | 2016-10-19 |
JPWO2015087913A1 (ja) | 2017-03-16 |
DK3082188T3 (en) | 2018-12-17 |
US10181608B2 (en) | 2019-01-15 |
CN105814727B (zh) | 2018-09-25 |
CN105814727A (zh) | 2016-07-27 |
EP3082188A4 (en) | 2017-07-12 |
CA2930893C (en) | 2018-05-15 |
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