WO2008132896A1 - 燃料電池のセパレータおよび燃料電池 - Google Patents
燃料電池のセパレータおよび燃料電池 Download PDFInfo
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- WO2008132896A1 WO2008132896A1 PCT/JP2008/055191 JP2008055191W WO2008132896A1 WO 2008132896 A1 WO2008132896 A1 WO 2008132896A1 JP 2008055191 W JP2008055191 W JP 2008055191W WO 2008132896 A1 WO2008132896 A1 WO 2008132896A1
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- Prior art keywords
- hole
- plate
- separator
- fuel cell
- reaction gas
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
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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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
-
- 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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
-
- 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
- H01M8/242—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
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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
-
- 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
- H01M2008/1095—Fuel cells with polymeric 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 separator and a fuel cell.
- the separator 1 includes a fuel gas plate 3, an oxidant gas plate 4, and an intermediate plate 5.
- the gas delivery flow path 30 provided in the intermediate plate 5 includes a plurality of slits.
- the delivery channel 30 receives the oxidant gas 23 used in the reaction via the through hole 22 provided in the oxidant gas plate 4.
- the transfer channel 30 discharges the oxidant gas 23 to the gas communication holes 19 provided in the oxidant gas plate 4 and the fuel gas plate 3. Since the gas delivery channel 30 is formed of a plurality of slits, the rigidity of the intermediate plate 5 can be increased.
- the water generated in the force sword electrode (oxygen electrode) and contained in the oxidant gas 23 after flowing through the cathode electrode is liquid in the slit of the gas delivery channel 30. May stay and block the slit.
- the flow of the oxidant gas 23 in the gas delivery flow path 30 is hindered, and power generation may be hindered.
- Such a problem is not limited to the gas flow path for exhausting used oxidizing gas, but is a gas flow path for allowing reaction gas (including oxidizing gas and fuel gas) to flow in the fuel cell. Consists of a flow path part, water It can occur widely in gas flow paths for circulating gas that can contain water.
- the present invention deals with at least a part of the above-described conventional problems, and water is accumulated in a gas flow path in a fuel cell that is configured of a plurality of flow path portions and circulates a gas that can contain moisture. The purpose is to make it difficult to do.
- the disclosure of Japanese Patent Application No. 2 0 7-7 1 1 1 0 8 6 is incorporated into this specification for reference.
- DISCLOSURE OF THE INVENTION In order to deal with at least a part of the above-described problems, a fuel cell separator as one embodiment of the present invention employs the following configuration.
- the separator is a first plate having a first hole for allowing a reaction gas to flow therethrough, and a second plate that is overlapped with the first plate, and a reaction gas between the first hole and the first plate.
- a second plate having a second hole for circulating the gas.
- the second hole has a first portion that overlaps with the first hole, and a second portion that does not overlap with the first hole.
- the second plate has a partition part that divides the second part into a plurality of flow path parts through which the reaction gas flows.
- the separator is further a vibration part that is connected to the partition part or another inner wall part that constitutes the flow path part, and at least a part of which is arranged at a position overlapping the first hole of the first plate, A vibration part is provided so as to be swayed by the reaction gas flowing through the first hole during operation of the fuel cell.
- the vibrating portion is shaken by the reaction gas flowing through the first hole.
- the vibration effectively drains the water in the channel part out of the channel part. Therefore, it is difficult for water to stay in the plurality of flow path portions.
- at least a part of the vibration part is provided with rigidity enough to bend by the flow of the reaction gas.
- the vibrating part is a partition part or another inner wall part constituting the flow path part on the second part side of the second part side and the second part side of the second hole. It is possible to adopt a mode in which the first portion side is not connected to the portion constituting the first or second plate on the first portion side. In such an aspect, the vibration part is supported on one side (the second part side). As a result, when the fuel cell is operated, the vibration part can be shaken by the reaction gas flowing in the first hole and the first part of the second hole.
- the plurality of partition parts may be connected to a single vibration part. In this manner, even when there is a local variation in the flow rate per unit time of the gas flowing through the first hole when the fuel cell is operating, the flow passages are evenly distributed. Water can be discharged.
- the plurality of partition portions are: It can also be set as the aspect connected to a respectively different vibration part. In such an embodiment, when the gas flow is intense in a part of the first hole, the vibration part located in that part vibrates vigorously. As a result, it is possible to efficiently drain the water in the flow path portion in the vicinity of the vibrating portion.
- the vibration unit can be generated as a part of the second plate when the second plate is generated.
- the separator can have a simple structure.
- a fuel cell including a plurality of the above-described separators and a membrane electrode assembly disposed between the plurality of separators can be employed.
- the plurality of separators are preferably stacked such that at least a part of the first holes overlap each other. In one of such modes, during operation of the fuel cell, the reaction discharged from the membrane electrode assembly through the second hole of the separator in the first hole of the plurality of stacked separators Gas flows in a predetermined direction along the direction of lamination.
- the first separator of the plurality of separators has a larger area when projected in the stacking direction than the second separator of the plurality of separators located upstream of the first separator in the flow of the reaction gas. It is preferable to provide a small vibration part.
- a vibrating portion with a small projected area is provided on the downstream side where the flow rate of the reaction gas per unit time is large, and the reaction gas per unit time
- a vibrating part with a large projected area is provided on the upstream side where the flow rate is small. Therefore, on the upstream side, a gentle gas flow can be received by a large vibration part, and on the downstream side, a violent gas flow can be received by a small vibration part.
- the reaction gas supplied to the membrane electrode assembly via the second hole of the separator is stacked in the first hole of the plurality of stacked separators. It circulates in a predetermined direction along the direction.
- the first separator of the plurality of separators is more than the second separator of the plurality of separators located on the upstream side of the flow of the reaction gas from the first separator. It is preferable to provide a vibration part having a large area when projected in the direction.
- a vibration portion with a small projected area is provided on the upstream side where the flow rate of the reactive gas per unit time is large, and vibration with a large projected area is provided on the downstream side where the flow rate of the reactive gas per unit time is small. Parts are provided. For this reason, on the upstream side, a violent gas flow can be received by a small vibration part, and on the downstream side, a gentle gas flow can be received by a large vibration part. As a result, it is possible to reduce the difference in the vibration amount of the torsional part between the upstream and downstream, and hence the variation in the water discharge of the plurality of flow path parts. Furthermore, as an aspect of the present invention, the following separator may be employed. it can.
- the separator is a separator for a fuel cell, which is a first plate having first and second holes for circulating a reaction gas, and a second plate that is overlapped with the first plate.
- a second plate having a third hole for receiving the reaction gas from the second hole and passing it to the first hole.
- the third hole has a first portion that overlaps the first hole, and a second portion that does not overlap the first hole but partially overlaps the second hole.
- At least one of the first plate and the second plate has a partition portion.
- the partition section divides at least a part of the second portion into a plurality of flow path portions through which the reaction gas flows, in a state where the first plate and the second plate are overlapped.
- the tip of the compartment is in a position that overlaps the first hole.
- the water in the second part of the third hole adheres to the partition part. And the water adhering to the tip of the partition is taken away by the reaction gas flowing through the first part of the first hole and the third hole. As a result, the water in the channel portion is efficiently discharged out of the channel portion. Therefore, according to the above aspect, water hardly stays in the plurality of flow path portions.
- a plurality of the separators including the first plate having the first and second holes and the second plate having the third holes, and the plurality of separators.
- a fuel cell comprising: a membrane electrode assembly disposed between them can be employed.
- the present invention can be realized in various forms other than those described above, for example, a fuel cell including a fuel cell separator separator, a fuel cell system, and a production thereof. It can be realized in the form of a manufacturing method or the like.
- a fuel cell including a fuel cell separator separator, a fuel cell system, and a production thereof. It can be realized in the form of a manufacturing method or the like.
- FIG. 1 is a cross-sectional view of a fuel cell 1 according to an embodiment of the present invention.
- FIG. 2 is a plan view of the M E A—body seal 20.
- FIG. 3 is a plan view showing the force sword side plate 31.
- FIG. 4 is a plan view showing the intermediate plate 32.
- FIG. 5 is a plan view showing the anode side plate 33.
- FIG. 6 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2.
- FIG. 7 is an enlarged view near the hole 3 2 4 1 of the intermediate plate 3 2 in the second embodiment.
- FIG. 8 is an enlarged view near the hole 3 2 4 1 of the intermediate plate 3 2 in the third embodiment.
- FIG. 9 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the fourth embodiment.
- FIG. 10 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the fifth embodiment.
- FIG. 11 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the modified example.
- FIG. 1 is a cross-sectional view of a fuel cell 1 according to an embodiment of the present invention.
- the fuel cell 1 is configured by alternately stacking membrane electrode assembly-integrated seal portions 20 and separators 30. Between the membrane electrode assembly-integrated seal portion 20 and the separator 30, a gas flow path portion 26 or 27 is disposed.
- the membrane electrode assembly integrated seal portion 20 is referred to as “M EA (Membrane Electrode Assembly) integrated seal portion 20”. End plates (not shown) are arranged at both ends in the stacking direction of the stacked body including these M EA-body type seal part 20, gas flow path parts 26, 27, and separator 30.
- the MEA—body-shaped seal part 20, the gas flow path parts 26, 27, and the separator 30 are pressurized in the stacking direction As, and the cell stack of the fuel cell Is formed.
- a fuel gas supply unit 2 such as a hydrogen tank that supplies fuel gas to the fuel cell stack
- an oxidant gas supply unit 3 such as an air pump that supplies oxidant gas to the fuel cell stack
- a fuel cell A fuel cell system is configured using a refrigerant circulation unit 4 such as a circulation pump that supplies refrigerant to the stack, and a refrigerant cooling unit 5 such as a radiator that cools the refrigerant to be supplied to the fuel cell stack. Can do.
- the MEA—body-shaped seal portion 20 is a rectangular substantially plate-shaped member.
- MEA—Body seal 20 is composed of a membrane electrode assembly 22, gas diffusion layers 2 4, 2 5 formed on both sides of the membrane electrode assembly 22, a membrane electrode assembly 22, and gas diffusion The outer peripheral portions of the layers 24 and 25 have seal portions 28 formed integrally therewith.
- the membrane electrode assembly 22 is referred to as “MEA (Membrane Electrode Assembly)”.
- FIG. 2 is a plan view of the ME A—body seal 20.
- the cross-sectional view of the ME A—body-shaped seal portion 20 shown in FIG. 1 corresponds to the cross-sectional view of the A—A cross section of FIG.
- a seal portion 28 is formed on the outer periphery of each of the ME A 22 and the gas diffusion layers 24 and 25 which are each formed in a rectangular shape and are stacked on each other.
- the seal portion 28 is formed of an insulating resin material such as silicon rubber or fluorine rubber, for example.
- the seal portion 28 is formed integrally with the ME A22 by injection molding.
- the seal portion 28 is provided with holes 40 to 45 penetrating the sheath portion 28 in the stacking direction of the ME A 22 and the gas diffusion layers 24 and 25.
- Hole 40 and hole 41 are on the opposite side across MEA 22.
- the hole 40 and the hole 41 are provided in the vicinity of the two opposing sides in the rectangular ME A—body-shaped seal portion 20.
- Hole 43 and hole 44 are also provided on the opposite side across ME A 22. However, the hole 43 and the hole 44 are respectively provided in the vicinity of a side different from the two sides in which the hole 40 and the hole 41 are provided in the vicinity of the rectangular ME A—body-shaped seal portion 20. .
- Holes 42 and 45 are also on the opposite side of MEA22. However, the hole 42 and the hole 45 are provided in the vicinity of the same side as the two sides in which the hole 43 and the hole 44 are provided in the vicinity of the rectangular ME A—body-type seal portion 20.
- holes 40 to 45 are each surrounded on the outer periphery by a ridge portion 2 81 which is a part of the seal portion 28.
- the ridge portion 2 8 1 protrudes on both sides in the stacking direction of the MEA—body-shaped seal portion 20 and the separator 30 at the seal portion 2 8 (the direction toward the back in the direction of the paper in FIG. 2). .
- the holes 40 to 45 are sealed independently between the separator 30 and the separator 30 (see FIGS. 1 and 2).
- the portion of the gas diffusion layer 24, 25 that is exposed to the outer surface in the central portion of the MEA body seal portion 20 is also surrounded by the ridge portion 281.
- the gas diffusion layers 24, 25 are also sealed independently between the separator 30 and the separator 30.
- the gas flow paths 26, 27 are porous bodies having voids communicating with each other.
- the gas flow path portions 2 6 and 2 7 can be made of, for example, a porous metal having high corrosion resistance.
- the gas flow paths 2 6 and 2 7 are arranged on both sides of the MEA 2 2 so as to be in contact with the gas diffusion layers 2 4 and 2 5.
- the gas flow path portions 26 and 27 are sandwiched between the MEA-body type seal portion 20 and the separator 30. These gas flow paths 2 6 and 2 7 can pass the oxidizing gas and the fuel gas, respectively.
- the gas flow path part 26 transmits the oxidizing gas to the gas diffusion layer 24.
- the gas flow path part 27 transmits the fuel gas to the gas diffusion layer 25. (refer graph1).
- the separator 30 is a plate-like member whose shape and size are almost equal to those of the ME A—body-type seal part 20.
- the separator 30 includes a force sword side plate 31, an anode side plate 33, and an intermediate plate 32 positioned between the force sword side plate 31 and the anode side plate 33 ( refer graph1).
- Each plate is made of a material that does not transmit oxidizing gas and reaction gas, for example, stainless steel.
- Each plate has a hole at a position where it overlaps with the holes 40 to 45 of the ME A—body seal 20 when the separator 30 is laminated with the ME A—body seal 20.
- the holes in the cathode side plate 31 at positions corresponding to the holes 40 to 45 of the ME A—body seal 20 are called holes 3 1 40 to 3 145, respectively.
- FIG. 3 is a plan view showing the force sword side plate 31.
- FIG. 4 is a plan view showing the intermediate plate 32.
- FIG. 5 is a plan view showing the anode side plate 33.
- the cross-sectional views of the force sword side plate 31, intermediate plate 32, and anode side plate 33 shown in FIG. 1 are the cross-sectional views of FIGS. Equivalent to.
- the force sword side plate 3 1 has holes 3 1 40 to 3 1 45 and holes 50 and 5 1.
- the intermediate plate 3 2 has holes 3 240 to 3 244 and holes 34.
- the anode side plate 33 has holes 3 340 to 3345 and holes 53 and 54.
- the hole 3 140 provided in the cathode side plate 31 and the hole 3 340 provided in the anode side plate 33 are projected in the stacking direction of the ME A body seal 20 and the separator 30.
- the ME A-type body seal part is positioned so that it overlaps the hole 40 in the 2 ° hole.
- the hole 3240 provided in the intermediate plate 3 2 is a part (hereinafter referred to as “first part 3 2 30”) when projected in the stacking direction.
- ME A—Body seal 20 holes 40, a hole 3140 in the force sword side plate 3 1, and a hole 3340 in the anode side plate 3 3 are provided so as to overlap each other.
- ME A—body seal 20 hole 40, force sword side plate 3 1 hole 3 140, intermediate plate 3 2 hole 3240, and fan side plate 3 3 hole 3 340 It forms part of the oxidizing gas supply manifold MOp for supplying the oxidizing gas for the electrochemical reaction to MEA 22 (see Fig. 1).
- arrow AO i indicates the flow of the oxidizing gas supplied to MEA 22.
- the hole 3 1 4 1 provided in the force sword side plate 3 1 and the hole 3 34 1 provided in the anode side plate 3 3 It is provided in a position and shape that overlaps with the hole 41 of the MEA—body-shaped seal portion 20 when projected in the stacking direction with the pallet 30.
- the hole 3 2 4 1 provided in the intermediate plate 3 2 is part of it (hereinafter referred to as “first part 3 2 3 1”) when projected in the stacking direction. It is provided in a position and shape that overlaps the hole 4 1 of the part 20, the hole 3 1 4 1 of the force sword side plate 3 1, and the hole 3 3 4 1 of the anode side plate 3 3.
- MEA body seal 2 0 hole 4 1
- intermediate plate 3 2 hole 3 2 4 1 1
- anode side plate 3 3 hole 3 3 4 1 forms a part of the oxidizing gas discharge manifold MOe for discharging the oxidizing gas after being subjected to the electrochemical reaction out of the fuel cell 1 (see Fig. 1).
- the arrow AO o indicates the flow of the oxidizing gas discharged from MEA 22.
- the hole 3 1 4 2 provided on the force sword side plate 3 1 and the hole 3 3 4 2 provided on the anode side plate 3 3 are the MEA body seals when projected in the stacking direction.
- These holes form a part of the refrigerant supply manifold for supplying the refrigerant flowing through the refrigerant flow path in the separator 30 in the fuel cell 1.
- the hole 3 1 4 5 provided in the cathode side plate 3 1 and the hole 3 3 4 5 provided in the anode side plate 3 3 are MEA-body seal part 2 when projected in the stacking direction. Positioned to overlap the 0 holes 4 and 5 in a rounded shape.
- these holes form a part of a refrigerant discharge mall for discharging the refrigerant flowing through the refrigerant flow path in the separator 30 to the outside of the fuel cell 1.
- second part 3 2 4 6 As shown in the upper part of Figure 4, holes 3 2 4 0 in the intermediate plate 3 2, holes 3 1 4 0 in the cathode side plate 3 1 and holes in the 3rd side plate 3 3 4 Part of the part that does not overlap with 0 (hereinafter referred to as “second part 3 2 4 6”) is provided in a comb-like shape. That is, the second portion 3 2 4 6 of the hole 3 2 40 is divided into a plurality of flow path portions 55 by the plurality of partition portions 3 2 2 of the intermediate plate 32. The tip of each flow path portion 55 is positioned so as to overlap the hole 50 of the cathode side plate 31 when projected in the stacking direction. As shown by the lower arrow AO i in FIG.
- the flow path portion 5 5 of the intermediate plate 3 2 is composed of the oxidizing gas supply manifold MO p (ME A—the hole 40 of the body seal portion 20, the cathode side plate 3 1 hole 3 1 4 0, intermediate plate 3 2 hole 3 2 4 0, opto anode plate 3 3 hole 3 3 4 0 etc.) is received. Then, the oxidizing gas is supplied to the gas flow path portion 26 through the hole 50 of the force sword side plate 31.
- MO p the oxidizing gas supply manifold MO p
- second part 3 2 4 7 holes 3 2 4 1 in the intermediate plate 3 2, holes in the cathode side plate 3 1 and holes in the plate 1 3 on the cathode side and 3 3 Part of the part that does not overlap with 3 3 4 1 (hereinafter referred to as “second part 3 2 4 7”) is provided in a comb-like shape. That is, the second part 3 2 4 7 of the hole 3 2 4 1 is divided into a plurality of flow path parts 5 6 by a plurality of partition parts 3 2 3 of the intermediate plate 3 2. The tip of each flow path portion 56 is positioned so as to overlap with the hole 51 of the force sword side plate 31 when projected in the stacking direction. As shown by the lower arrow AO o in FIG.
- the flow path portion 5 6 of the intermediate plate 3 2 allows the oxidizing gas after being subjected to the electrochemical reaction to pass through the hole 5 1 of the force sword side plate 3 1. And received from the gas flow path section 26. Then, the oxidizing gas is oxidized gas outlet MOe (MEA—body-shaped seal part 2 0 hole 4 1, cathode side plate 3 1 hole 3 1 4 1, intermediate plate 3 2 hole 3 2 4 1 and the hole 3 3 4 1 etc. of the anode side plate 3 3).
- MOe oxidized gas outlet MOe
- second part 3 2 4 8 As shown in the upper right of Figure 4, holes 3 2 4 in the intermediate plate 3 2, the holes 3 1 4 4 in the sword side plate 3 1 and the holes 3 in the 3rd side plate 3 3
- the part that does not overlap with 3 4 4 (hereinafter referred to as “second part 3 2 4 8”) is also provided in a comb shape.
- the second part 3 2 4 8 of the hole 3 2 4 4 is divided into a plurality of flow path parts 5 7 by a plurality of partition parts 3 2 6 of the intermediate plate 3 2.
- the tip of each flow path portion 57 is positioned so as to overlap with the hole 54 of the anode side plate 33 when projected in the stacking direction.
- the flow path part 5 7 of the intermediate plate 3 2 is the fuel gas supply manifold (MEA integrated seal part 2 0 hole 4 4, force sword side plate 3 1 hole 3 1 4 4, intermediate plate 3 2 hole 3 2 4 4 and the hole 3 3 4 4 etc. of the anode side plate 3 3) is received. Then, the fuel gas is supplied to the gas flow path portion 27 through the hole 54 of the anode side plate 33. The fuel gas circulates in the gas flow path portion 27 from the front to the back along the direction perpendicular to the paper surface of FIG. As shown in the lower left of Fig.
- second part 3 2 4 9 it is a part of hole 3 2 4 3 in the intermediate plate 3 2, and the hole 3 1 4 3 in the force sword side plate 3 1 and the hole 3 3 4 3 in the third plate 3 3 4 3
- the part that does not overlap (hereinafter referred to as “second part 3 2 4 9”) is provided in a comb-like shape. That is, the second portion 3 2 4 7 of the hole 3 2 4 3 is divided into a plurality of flow path portions 5 8 by the plurality of partition portions 3 2 7 of the intermediate plate 3 2.
- the tip of each flow path portion 58 is positioned so as to overlap with the hole 53 of the anode side plate 33 when projected in the stacking direction.
- the flow path portion 58 of the intermediate plate 32 receives the fuel gas after being subjected to the electrochemical reaction from the gas flow path portion 27 through the hole 53 of the anode side plate 33.
- the fuel gas is the fuel gas discharge manifold (MEA-type Hole 43 in the control plate 20, hole 3 143 in the force sword side plate 3 1, hole 3 243 in the intermediate plate 3 2, hole 3 343 in the anode side plate 3 3, etc.
- the plurality of holes 34 provided in the intermediate plate 3 2 are, when projected in the stacking direction, the hole 42 of the ME A—body seal 20, the hole 3 142 of the force sword side plate 3 1, and the anode side plate 3 3 hole 342 and one end overlap each other and shape (see Figure 4).
- the hole 34 provided in the intermediate plate 32 is, when projected in the stacking direction, the hole 45 of the ME A—body seal 20, the hole 3 145 of the cathode side plate 31, and the anode side.
- Plate 33 has a hole 3345 and the other end overlaps with the shape of the hole.
- the hole 34 in the intermediate plate 32 forms a refrigerant flow path 34 in a state where it is sandwiched between the force sword side plate 31 and the anode side plate 33 (see FIG. 1).
- the refrigerant flow path 34 of the intermediate plate 3 2 is composed of a refrigerant supply manifold (ME A—hole 42 of the body seal 20, hole 3 1 42 of the cathode side plate 3 1, hole 3342 of the anode side plate 33, etc.
- FIG. 6 is an enlarged view of the vicinity of the hole 3 24 1 of the intermediate plate 3 2 shown in the lower part of FIG. In FIG. 6, the intermediate plate 3 2 is overlaid from the lower side of the page. A part of the power anode side plate 33 is also shown.
- the hole 51 of the cathode side plate 31 to be overlapped with the intermediate plate 32 from the upper side of the drawing is indicated by a broken line.
- Fig. 6 mark the circle with an X in the part where the oxidizing gas flows in the direction from the front to the back of the page.
- a mark with a dot on the circle is marked at the location where the oxidizing gas flows in the direction from the back to the front of the page.
- the second part 3 2 4 7 that does not overlap with the holes 3 3 4 1 of the anode side plate 3 3 is a plurality of flow path parts by the plurality of partitions 3 2 3 of the intermediate plate 3 2 It is divided into 5-6.
- a common vibrating portion 3 2 5 is provided at the tip of the plurality of partition portions 3 2 3.
- the vibration part 3 2 5 is provided in such a position and shape that a part thereof overlaps with the hole 3 3 4 1 of the anode side plate 33 (see FIG. 6). Further, the vibrating part 3 2 5 is provided thinner than the partition part 3 2 3 and other parts of the intermediate plate 3 2. For this reason, even when the intermediate plate 3 2 is disposed between the anode side plate 3 3 and the force sword side plate 31 and laminated, the vibrating portion 3 2 5 It can be in a direction perpendicular to the page of FIG. In FIG. 6, portions of the intermediate plate 32 having the same thickness are shown with the same hatching.
- the vibrating portion 3 2 5 can be formed by press working when forming the intermediate plate 3 2. Further, the intermediate plate 32 can be formed by stacking a plurality of plate members. In such an embodiment, the vibrating part 3 2 5 is It can be formed by reducing the number of stacked plate members compared to the other parts of the intermediate plate 32.
- the oxidizing gas that has flowed through the gas flow path portion 26 in the fuel cell 1 passes through the hole 51 (shown by a broken line in FIG. 6) of the cathode side plate 31 in the direction toward the back of the page, and the intermediate plate 3 2 (See the arrow AO o in the lower left part of Fig. 1).
- the oxidizing gas passes through the flow path portion 56 and passes through the hole 63 2 of the intermediate plate 32 and the hole 3 3 4 1 of the hole plate 3 3 and the oxidation gas discharge marker. Hold towards MO e.
- MO e In the oxidizing gas exhaust manifold MO e, the oxidizing gas circulates in the direction from the back to the front of the page in FIG. In FIG. 6, only one intermediate plate 32 and one anode side plate 33 of the separator 30 are shown. However, in the fuel cell 1, large number of separators 3 0 and the MEA- type seal portion 2 0 are stacked (see FIG.
- the oxidant gas coming from the upstream hits.
- the vibrating part 3 2 5 is shaken by the flow of the oxidizing gas.
- the oxidizing gas that has flowed through the gas flow path portion 26 in the fuel cell 1 contains moisture. Part of the water is water produced by the electrochemical reaction in MEA 22.
- the oxidizing gas supplied to the oxidizing gas supply manifold MOp may be pre-humidified. Moisture contained in the oxidizing gas may be liquefied in the gas flow path portion 26. Such liquefied water is indicated by LW in Fig. 6.
- the water liquefied in the gas flow path section 26 is moved by the vibration of the vibration section 3 25 and discharged from the flow path section 56 to the oxidizing gas discharge manifold MO e. . Further, the water adhering to the vibration part 3 2 5 is peeled off from the vibration part 3 2 5 by the vibration of the vibration part 3 2 5 and is blown downstream in the oxidant gas discharge mall MO e. At that time, the water existing in the gas flow path portion 26 and part of the water connected to the vibration portion 3 25 is also drawn out from the gas flow path portion 26 at the same time. In the oxidizing gas exhaust manifold MOe, it is blown downstream.
- the channel portion 56 is less likely to be clogged with the liquefied water as compared with the embodiment without the vibrating portion 3 25. In other words, it is unlikely that the flow of oxidizing gas will be hindered. Therefore, in this embodiment, it is less likely that the power generation in the fuel cell 1 is hindered as compared with the aspect without the vibrating portion 3 2 5.
- a common vibrating portion 3 25 is provided at the tip of the plurality of partition portions 3 2 3.
- the vibrating portion 3 2 4 provided at the tip of the plurality of partition portions 3 2 2 that divides the second portion 3 2 4 6 of the hole 3 2 4 0 into the plurality of flow passage portions 5 5 (see FIG. 4 top row ), And is oscillated by the oxidizing gas that flows in the direction from the front of the page of FIG.
- the fuel cell of the second embodiment has holes 3 2 4 h and 3 2 5 h in the vibrating parts 3 2 4 and 3 2 5 (see FIG. 4), respectively.
- the other points of the fuel cell of the second embodiment are the same as the fuel cell 1 of the first embodiment.
- FIG. 7 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the second embodiment.
- the vibration part 3 2 5 provided at the tip of the plurality of partition parts 3 2 3 has a plurality of holes 3 2 5 h.
- the number of holes 3 2 5 h in the vibrating part 3 2 5 is the same in each separator.
- each hole 3 25 h is as small as the separator 30 positioned upstream of the flow of the oxidizing gas in the oxidizing gas discharge manifold MOe and as large as the separator 30 positioned downstream.
- the area of the vibrating portion 3 25 when projected in the stacking direction of the MEA-body type seal portion 20 and the separator 30 is as large as the upstream separator 30 and as small as the downstream separator 30.
- the oxidizing gas exhaust manifold MOe more oxidizing gas from the separator 30 flows downstream. For this reason, the flow rate of the oxidizing gas per unit time increases in the downstream in the oxidizing gas discharge manifold MOe.
- the intermediate plate 3 2 of the upstream separator 30 has a lower gas flow rate than that of the downstream.
- the vibration part 3 2 5 can be shaken to the same extent as. That is, by setting the size of the hole 3 25 h in each separator 30 to an appropriate value, the magnitude of the vibration of the vibrating portion 3 25 of each separator 30 can be made substantially equal. As a result, the clogging of the oxidizing gas discharge path in each separator 30 can be prevented to the same extent.
- the vibration part 3 2 4 provided at the tip of the plurality of partition parts 3 2 2 also has a plurality of holes 3 2 4 h, like the vibration part 3 2 5.
- the number and area of the holes 3 2 4 h that the vibration part 3 2 4 has are the same in each separator.
- the area of each hole 3 2 4 h is as large as the intermediate plate 3 2 of the separator 30 located upstream of the flow of the oxidizing gas in the oxidizing gas supply manifold MO p, and the area of the separator 30 located downstream Intermediate plate 3 2 is smaller.
- the area of the vibrating part 3 25 when projected in the stacking direction of the MEA—body-shaped seal part 20 and the separator 30 is as small as the upstream separator 30 and as large as the downstream separator 30.
- the oxidizing gas supply manifold MO p the oxidizing gas supply manifold An oxidizing gas is supplied to each separator 30 in contact with the node MOp. For this reason, in the oxidizing gas supply manifold MOp, a smaller amount of oxidized gas circulates downstream. In other words, the flow rate of the oxidizing gas per unit time decreases in the downstream in the oxidizing gas supply manifold MOp. For this reason, in the second embodiment, in the intermediate plate 3 2 of the downstream separator 30, the intermediate plate 3 2 of the upstream separator 30 has a lower gas flow rate than the upstream. The vibration part 3 2 4 can be shaken to the same extent as.
- each separator 30 by setting the size of the hole 3 24 h in each separator 30 to an appropriate value, the magnitude of the vibration of the vibrating portion 3 24 of each separator 30 can be made substantially equal. As a result, clogging of the oxidizing gas supply path in each separator 30 can be prevented to the same extent.
- the vibrating portions 3 2 4 a and 3 2 5 a are individually provided for the plurality of partition portions 3 2 2 and 3 2 3 of the intermediate plate 3 2.
- the other points of the fuel cell of the third embodiment are the same as the fuel cell 1 of the first embodiment.
- FIG. 8 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the third embodiment.
- an independent vibration part 3 2 5 a is provided at the tip of each partition part 3 2 3.
- the area of each vibration part 3 2 5 a when projected in the stacking direction of the MEA—body-shaped seal part 20 and the separator 30 is the same in each separator.
- the area of the vibrating section 3 25 is as large as the upstream separator 30 and as small as the downstream separator 30. Also in the embodiment as in the third embodiment, the upstream separator 30 can swing the vibrating section 3 25 as much as the downstream separator 30 with a gas flow rate lower than that of the downstream separator. For this reason, the magnitude of the vibration of the vibration part 3 2 5 of each separator 30 can be made substantially equal by setting the magnitude of the vibration part 3 25 of each separator 30 to an appropriate value. As a result, clogging of the oxidizing gas discharge path in each separator 30 can be prevented to the same extent.
- the vibrating sections 3 2 4 provided at the tips of the plurality of partition sections 3 2 2 are also individually provided for each partition section 3 2 2, as with the vibrating sections 3 2 5. It is installed.
- the area of each vibration part 3 25 when projected in the stacking direction of the MEA-body seal part 20 and the separator 30 is the same in each separator.
- the area of the vibrating portion 3 25 is as small as the upstream separator 30 and as large as the downstream separator 30.
- the magnitude of the vibration of the vibration part 3 2 4 of each separator 30 can be set by setting the magnitude of the vibration part 3 2 4 of each separator 30 to an appropriate value. Can be approximately equal.
- each vibration part is provided independently. For this reason, when the gas flow is intense in a part of the oxidizing gas supply manifold MOp or the oxidizing gas discharge manifold MOe, the vibration part located in or near that part vibrates vigorously. As a result, the energy of the vibration can be effectively utilized, and the water in the flow path adjacent to the partition connected to the vibration part can be efficiently discharged.
- the common vibration part as in the first and second embodiments In the embodiment having the, when the vibration can be used from the portion of the vibrating portion where the gas flow is intense to the other portion, a part of the energy is lost due to the damping.
- the third embodiment since such loss is small, water can be efficiently discharged from the flow path portion.
- the fuel cell of the fourth embodiment has an auxiliary vibrating portion 3 28 on the anode side plate 33 that forms the inner wall of the flow path portion 55.
- the fuel cell of the fourth embodiment has the auxiliary vibrating portion 3 29 on the anode side plate 33 that forms the inner wall of the flow path portion 56.
- the fuel cell of the fourth embodiment is different from the fuel cell 1 of the first embodiment in the configuration of the partition portions 3 2 2 b and 3 2 3 b and the vibrating portions 3 2 4 b and 3 2 5 b.
- the other points of the fuel cell of the fourth embodiment are the same as those of the fuel cell 1 of the first embodiment.
- FIG. 9 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the fourth embodiment.
- each partition 3 2 3 b reaches a position where it overlaps with the hole 3 3 4 1 of the anode side plate 3 3.
- the vibration part 3 2 5b is provided in the front-end
- the partition part 3 2 2 b and the vibration part 3 2 4 b are also provided in the same manner.
- An auxiliary vibrating portion 3 29 is provided on the anode side plate 33 constituting the inner wall of the flow path portion 56.
- the auxiliary vibration part 3 29 is composed of a wire-like member having a predetermined elasticity.
- the auxiliary vibration part 3 2 9 has a curved shape at two points. ing. The direction of bending at these two points is the direction in which the sides sandwiching the bending point are included in the same plane.
- the auxiliary vibration part 3 2 9 is fixed to the anode side plate 3 3 constituting the inner wall of the flow path part 5 6 at one end 3 2 9 a and one point 3 2 9 b between the two bending points. Has been.
- the other part can move relative to the anode side plate 33 by elastic deformation.
- the other end 3 2 9 c of the auxiliary vibration part 3 2 9 reaches a position where it overlaps with the hole 3 3 4 1 of the anode side plate 3 3.
- the auxiliary vibration part 3 29 is configured to have elasticity to the extent that it vibrates due to the flow of the oxidizing gas flowing through the flow path part 56.
- the liquid water in the flow path part 56 is efficiently oxidized by the vibration of the vibration part 3 2 5 and also by the vibration of the auxiliary vibration part 3 2 9 MO e To be discharged.
- the anode-side plate 33 that constitutes the inner wall of the flow path portion 55 is also provided with the auxiliary vibration portion 3 2 8 having the same configuration as the auxiliary vibration portion 3 2 9. ing.
- the liquid water in the flow path part 55 is efficiently discharged out of the flow path part 55 by the vibration of the vibration part 3 24 and the vibration of the auxiliary vibration part 3 28.
- FIG. 10 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in the fifth embodiment.
- the hole 3 2 4 1 of the intermediate plate 3 2 of the fifth embodiment is the hole 3 1 4 1 of the cathode side plate 3 1 (in FIG.
- the first part 3 2 3 1 that overlaps with the hole 3 3 4 1 does not overlap with the hole 3 1 4 1 of the cathode side plate 3 1 and part of the cathode side plate 3 1
- Each partition 3 2 3 c has a hole 3 1 4 1 in the force sword side plate 3 1 when the cathode side plate 3 1, the intermediate plate 3 2 and the anode side plate 3 3 are stacked.
- Plate 3 2 hole 3 2 4 1 first part 3 2 3 1 and anode side plate 3 3 3 4 1 It consists of the length where the part 3 2 3 t is located (see Fig. 1 and Fig. 10).
- each partition part 3 2 3 c is configured such that its tip part 3 2 3 t is positioned so as to overlap with the holes 3 1 4 1 and 3 3 4 1.
- the partition 3 2 3 c is provided with the same thickness as that of the other part 3 2 4 1 p constituting the outer periphery of the hole 3 2 4 1 of the intermediate plate 3 2 up to the tip 3 2 3 t. It has been.
- the water liquefied in the gas flow path portion 2 6 adheres to the partition portion 3 2 3 c in the hole 3 2 4 1 of the intermediate plate 3 2. Then, the water travels on the partition 3 2 3 c and moves to the tip 3 2 3 t in the oxidizing gas exhaust manifold MO e.
- water in the gas flow path 2 6 (see Fig. 1) and the holes 3 2 4 1 adhered to the partition 3 2 3 c Water is a continuous partition 3 2 3 c
- the water adhering to the tip 3 2 3 t is moved from the tip 3 2 3 t by the flow of the oxidizing gas in the oxidizing gas exhaust manifold MOe. Stripped and blown downstream in oxidizing gas exhaust manifold MOe. At that time, a part of the water existing in the gas flow path portion 26 and connected to the water adhering to the tip end portion 3 2 3 t is also drawn out from the gas flow path portion 26 at the same time. Then, it is blown downstream in the oxidizing gas exhaust manifold MOe.
- the mode without the partition part 3 2 3 c and the tip part 3 2 3 t of the partition part 3 2 3 c are not in the oxidizing gas discharge manifold MO e.
- the channel portion 56 is not easily clogged with liquefied water. In other words, it is unlikely that the flow of oxidant gas will be hindered. Therefore, in the present embodiment, compared with the embodiment in which the partition portion 3 2 3 c is not provided, and the embodiment in which the tip portion 3 2 3 t of the partition portion 3 2 3 c is not in the oxidizing gas discharge mould MOe. Therefore, it is unlikely that power generation in fuel cell 1 will be hindered.
- the partition part 3 2 3 c is not configured to partition the first part 3 2 3 1 constituting the oxidizing gas discharge manifold MOe.
- the tip of the partition part 3 2 3 c does not reach the part 3 2 4 1 pf constituting the outer peripheral part of the intermediate plate 3 2 facing the hole 3 2 4 1.
- the flow path is configured to prevent the flow of the oxidizing gas in the oxidizing gas discharge manifold as compared with the aspect in which the tip of the partition part reaches the other part of the outer periphery of the oxidizing gas discharge manifold.
- the projected area in the direction is small. Therefore, the pressure loss in the oxide gas exhaust manifold can be reduced.
- the present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the gist thereof.
- the following modifications are possible.
- the vibrating portions 3 2 5, 3 2 4, etc. are provided thinner than the partition portions 3 2 3, 3 2 2 and other portions of the intermediate plate 3 2.
- the vibrating portion can be provided with the same thickness as the partition portions 3 2 3 and 3 2 2 and other portions of the intermediate plate 3 2.
- the portion overlapping the hole 3 3 4 1 of the anode side plate 3 3 and the hole 3 1 4 1 of the cathode side plate 3 1 may be provided thicker than the partition part.
- the vibration part may have a part from which thickness differs mutually. However, it is preferable that at least a part has a rigidity and a shape that can be elastically deformed by the flow of the reaction gas during operation of the fuel cell.
- the vibrating parts 3 2 4 and 3 2 5 are connected to and supported by the tips of the partition parts 3 2 2 and 3 2 3.
- the vibrating portions 3 2 4 and 3 2 5 may be connected to the intermediate plate via wire-like auxiliary vibrating portions 3 2 8 and 3 2 9 having predetermined elasticity.
- the vibrating parts 3 24 and 3 25 have a plate shape.
- the vibrating parts 3 2 4 and 3 2 5 have a three-dimensional shape.
- the wire-like auxiliary vibrating portions 3 2 8 and 3 29 are provided in the separator 30 together with the plate-like vibrating portions 3 2 4 and 3 2 5.
- the separator 30 may be configured to include only a wire-shaped assisting vibration part without including a plate-like vibration part. That is, the name of the auxiliary vibration part is used for convenience in the embodiment of the fourth embodiment, and does not mean that it is always used with other vibration parts.
- the fuel cell 1 has the gas flow path portions 26 and 27 that are formed using a porous metal.
- the fuel cell 1 may be configured without the gas flow path portions 2 6 or 2 7.
- a fuel cell may have a mode in which a separator has a pentane flow path and MEA is directly stacked on the separator.
- the present invention can be applied not only to the oxidizing gas flow path but also to the fuel gas flow path.
- fuel gas may be used after being humidified before being supplied to the MEA. Therefore, by applying the present invention to the flow path of the fuel gas, it is possible to reduce the possibility that water added to the fuel gas is liquefied and the flow path of the fuel gas is blocked.
- the trapping vibration portion 3 29 is provided on the anode side plate 33 that constitutes the inner wall of the flow path portion 56.
- the auxiliary oscillating portion or the oscillating portion provided to vibrate by the gas flow can also be provided on the force sword side plate that constitutes the inner wall of the flow path portion. That is, the auxiliary vibration part or the vibration part can be provided on the inner wall part of the flow path part.
- the auxiliary vibration part or the vibration part can be provided in a part of the partition part that does not constitute the inner wall part of the flow path part, such as a tip part of the partition part.
- FIG. 11 is an enlarged view of the vicinity of the hole 3 2 4 1 of the intermediate plate 3 2 in Modification 7.
- the partition portions 3 2 3, 3 2 3 b and 3 2 3 c have a structure provided on the intermediate plate 3 2 (see FIGS. 6 to 10).
- the partitioning portion can be structured to be provided on the force-side plate 31 and the node-side plate 33.
- the configuration of Modification Example 7 other than the partition portion is the same as that of Example 5.
- the partition 3 1 3 has a structure provided on the force sword side plate 3 1.
- the partition part 3 1 3 protrudes on the force sword side plate 3 1 in the direction of the intermediate plate 3 2 and the anode side plate 3 3 stacked on the cathode side plate 3 1.
- the partition part 3 1 3 is in the state where the force sword side plate 3 1, the intermediate plate 3 2, and the anode side plate 3 3 are stacked, and the second part of the hole 3 2 4 1 of the intermediate plate 3 2 Divide the parts 3 2 4 7 into a plurality of channel parts 5 6 through which the oxidizing gas flows.
- the portion included in the cross section of FIG. 11 in the configuration of the cathode side plate 31 is only the partition portion 31 3 indicated by a cross hatch.
- the water liquefied in the gas flow path part 2 6 adheres to the partition part 3 1 3 in the hole 3 2 4 1 of the intermediate plate 3 2.
- the water travels on the partition 3 1 3 and moves to the tip 3 1 3 t of the partition 3 1 3 in the oxidizing gas discharge manifold MOe. Thereafter, the water is peeled off from the tip portion 3 13 t by the flow of the oxidizing gas in the oxidizing gas discharge manifold Me, and is blown downstream in the oxidizing gas discharge manifold MO e. At that time, a part of the water that was present in the gas flow path portion 26 and connected to the water attached to the tip end portion 3 1 3 t was also removed from the gas flow path portion 26 at the same time. Pulled out and blown downstream in the oxidizing gas exhaust manifold MOe.
- the flow path portion 56 is not easily clogged with the liquid water. In other words, it is unlikely that the flow of oxidizing gas will be hindered. As a result, there is a low possibility that power generation in the fuel cell 1 is hindered.
- the tip of the partition 3 1 3 is the part of the force sword side plate 3 1 that constitutes the outer peripheral part of the hole 3 1 4 1 facing the hole 3 2 4 of the intermediate plate 3 2. The part of the outer periphery of 1 facing 3 2 4 1 pf is not reached. For this reason, the projected area in the direction of the flow path is small because it prevents the flow of the oxidizing gas in the oxidizing gas discharge manifold. Therefore, the pressure loss in the oxidizing gas exhaust manifold can be reduced. ⁇
- the partition 3 2 3 c extends to the tip 3 2 3 t, and the other part of the intermediate plate 3 2 that forms the outer periphery of the hole 3 2 4 1 3 2 4 1 p Same as One thickness is provided.
- at least a part of the partition section that divides the second part 3 2 3 1 of the hole 3 2 4 1 of the intermediate plate is at least part of the other part that forms the outer periphery of the hole 3 2 4 1 3 2 4 1
- the portion between the partition portion and the first plate 3 1 has a channel having a thickness smaller than that of the other portion of the second portion 3 2 4 7 of the hole 3 2 4 1. Will be constructed.
- the partition portion may be configured to independently divide the plurality of flow path portions, or the second portion may be configured to be a plurality of flow path portions in a mode in which the plurality of flow path portions are at least partially communicated with each other. It can also be set as the aspect divided into.
- the separator may have a mode in which a plurality of flow path parts are independent from each other, or a mode in which at least a part of the plurality of flow path parts are in communication with each other.
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- Sustainable Development (AREA)
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2680846A CA2680846C (en) | 2007-04-20 | 2008-03-14 | Fuel cell separator and fuel cell |
US12/531,086 US20100035121A1 (en) | 2007-04-20 | 2008-03-14 | Fuel cell separator and fuel cell |
JP2009511712A JP5083313B2 (ja) | 2007-04-20 | 2008-03-14 | 燃料電池のセパレータおよび燃料電池 |
DE112008000553.2T DE112008000553B4 (de) | 2007-04-20 | 2008-03-14 | Brennstoffzellenseparator und Brennstoffzelle |
CN2008800089925A CN101636869B (zh) | 2007-04-20 | 2008-03-14 | 燃料电池的分离器和燃料电池 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007111086 | 2007-04-20 | ||
JP2007-111086 | 2007-04-20 |
Publications (1)
Publication Number | Publication Date |
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WO2008132896A1 true WO2008132896A1 (ja) | 2008-11-06 |
Family
ID=39925359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/055191 WO2008132896A1 (ja) | 2007-04-20 | 2008-03-14 | 燃料電池のセパレータおよび燃料電池 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100035121A1 (ja) |
JP (1) | JP5083313B2 (ja) |
CN (1) | CN101636869B (ja) |
CA (1) | CA2680846C (ja) |
DE (1) | DE112008000553B4 (ja) |
WO (1) | WO2008132896A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5777892B2 (ja) * | 2011-01-12 | 2015-09-09 | 本田技研工業株式会社 | 燃料電池 |
JP5666396B2 (ja) * | 2011-07-14 | 2015-02-12 | 本田技研工業株式会社 | 燃料電池用金属セパレータの製造方法 |
JP6064969B2 (ja) * | 2014-10-15 | 2017-01-25 | トヨタ自動車株式会社 | 燃料電池用集電板、および燃料電池スタック |
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JP2001148252A (ja) * | 1999-09-10 | 2001-05-29 | Honda Motor Co Ltd | 燃料電池 |
JP2002184430A (ja) * | 2000-12-12 | 2002-06-28 | Sharp Corp | 燃料電池 |
JP2002203585A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Eng Co Ltd | 燃料電池 |
JP2004006104A (ja) * | 2002-05-31 | 2004-01-08 | Honda Motor Co Ltd | 燃料電池のセパレータ構造 |
JP2004214128A (ja) * | 2003-01-08 | 2004-07-29 | Sony Corp | 燃料電池用セパレータ、燃料電池装置及び電子応用装置 |
WO2006062242A1 (ja) * | 2004-12-08 | 2006-06-15 | Toyota Jidosha Kabushiki Kaisha | 燃料電池の配流特性の改善 |
JP2006269363A (ja) * | 2005-03-25 | 2006-10-05 | Sanyo Electric Co Ltd | 燃料電池 |
WO2008038735A1 (fr) * | 2006-09-29 | 2008-04-03 | Sanyo Electric Co., Ltd. | pile à combustible |
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US5770327A (en) * | 1997-08-15 | 1998-06-23 | Northwestern University | Solid oxide fuel cell stack |
DE60006950T2 (de) | 2000-07-07 | 2004-10-21 | Astrium Gmbh | Kondensierender W#rmetauscher |
EP1457750A1 (de) | 2003-03-11 | 2004-09-15 | SFC Smart Fuel Cell AG | Flüssigkeitsabfuhr aus fluidführenden Einrichtungen |
KR100519970B1 (ko) * | 2003-10-07 | 2005-10-13 | 삼성전자주식회사 | 밸브리스 마이크로 공기공급장치 |
JP4412001B2 (ja) * | 2004-02-27 | 2010-02-10 | ソニー株式会社 | 発電ユニット、燃料電池 |
JP2007111086A (ja) | 2005-10-18 | 2007-05-10 | Matsushita Electric Ind Co Ltd | 電気掃除機 |
-
2008
- 2008-03-14 WO PCT/JP2008/055191 patent/WO2008132896A1/ja active Application Filing
- 2008-03-14 JP JP2009511712A patent/JP5083313B2/ja not_active Expired - Fee Related
- 2008-03-14 US US12/531,086 patent/US20100035121A1/en not_active Abandoned
- 2008-03-14 CN CN2008800089925A patent/CN101636869B/zh not_active Expired - Fee Related
- 2008-03-14 DE DE112008000553.2T patent/DE112008000553B4/de not_active Expired - Fee Related
- 2008-03-14 CA CA2680846A patent/CA2680846C/en active Active
Patent Citations (8)
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JP2001148252A (ja) * | 1999-09-10 | 2001-05-29 | Honda Motor Co Ltd | 燃料電池 |
JP2002184430A (ja) * | 2000-12-12 | 2002-06-28 | Sharp Corp | 燃料電池 |
JP2002203585A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Eng Co Ltd | 燃料電池 |
JP2004006104A (ja) * | 2002-05-31 | 2004-01-08 | Honda Motor Co Ltd | 燃料電池のセパレータ構造 |
JP2004214128A (ja) * | 2003-01-08 | 2004-07-29 | Sony Corp | 燃料電池用セパレータ、燃料電池装置及び電子応用装置 |
WO2006062242A1 (ja) * | 2004-12-08 | 2006-06-15 | Toyota Jidosha Kabushiki Kaisha | 燃料電池の配流特性の改善 |
JP2006269363A (ja) * | 2005-03-25 | 2006-10-05 | Sanyo Electric Co Ltd | 燃料電池 |
WO2008038735A1 (fr) * | 2006-09-29 | 2008-04-03 | Sanyo Electric Co., Ltd. | pile à combustible |
Also Published As
Publication number | Publication date |
---|---|
DE112008000553B4 (de) | 2019-05-29 |
CA2680846A1 (en) | 2008-11-06 |
JPWO2008132896A1 (ja) | 2010-07-22 |
CN101636869B (zh) | 2012-02-29 |
CA2680846C (en) | 2012-12-04 |
DE112008000553T5 (de) | 2010-02-18 |
JP5083313B2 (ja) | 2012-11-28 |
CN101636869A (zh) | 2010-01-27 |
US20100035121A1 (en) | 2010-02-11 |
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