WO2006062242A1 - 燃料電池の配流特性の改善 - Google Patents
燃料電池の配流特性の改善 Download PDFInfo
- Publication number
- WO2006062242A1 WO2006062242A1 PCT/JP2005/022910 JP2005022910W WO2006062242A1 WO 2006062242 A1 WO2006062242 A1 WO 2006062242A1 JP 2005022910 W JP2005022910 W JP 2005022910W WO 2006062242 A1 WO2006062242 A1 WO 2006062242A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gas
- oxidizing gas
- holes
- communication
- gas supply
- Prior art date
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Classifications
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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
-
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention relates to a technique for improving gas distribution characteristics of a fuel cell.
- a fuel cell is usually configured by stacking a plurality of single cells.
- a fuel cell having a reaction gas flow path inside the separator has been proposed.
- Japanese Laid-Open Patent Publication No. 2 0 2 _ 1 5 1 1 0 8 discloses a gas communication hole for supplying a reaction gas to an electrode and discharging the reaction gas from the electrode.
- a fuel cell provided on the electrode side of the reaction gas channel is disclosed.
- the flow rate of the reaction gas differs between the downstream side of the gas communication hole and the downstream side of the portion that is not the gas communication hole.
- the reaction gas flow rate may be non-uniform.
- the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to make the reaction gas flow rate uniform within the electrode.
- a fuel cell of the present invention includes a plurality of single cells each having an electrode, a separator, and a gas manifold holding each of the plurality of single cells.
- the separator is provided with a plurality of gas communication channels that communicate gas passages existing on the surface of the electrode with the gas manifold, and each of the gas communication channels.
- the present invention can be realized in various modes.
- a fuel cell, a fuel cell system using the fuel cell, a power generation device using the fuel cell system, and a fuel cell system therefor It can be realized in the form of an installed electric vehicle or the like.
- FIG. 1 is an explanatory diagram showing the configuration of the fuel cell stack 100 constituting the fuel cell.
- FIG. 2 is a schematic diagram showing the shapes of the three plates 3 0 0, 4 0 0, 5 0 0 constituting the single cell 2 0 0.
- FIG. 3 is an explanatory diagram showing the flow of fuel gas in the first embodiment.
- FIG. 4 is an explanatory view showing the flow of the oxidizing gas in the first embodiment.
- FIG. 5 is an explanatory diagram showing the flow of the oxidizing gas in the second embodiment.
- FIG. 6 is an explanatory diagram showing the flow of the oxidizing gas in the third embodiment.
- FIG. 7 is an explanatory view showing the flow of the oxidizing gas in the fourth embodiment.
- FIG. 1 (a) is an explanatory diagram showing a configuration of a fuel cell stack 100 constituting a fuel cell as an embodiment of the present invention.
- the fuel cell stack 100 is configured by stacking a plurality of single cells 20 0.
- the fuel cell stack 1 0 0 includes an oxidizing gas supply manifold 1 1 0, an oxidizing gas exhaust manifold 1 2 0, a fuel gas supply manifold 1 3 0, and a fuel gas exhaust manifold 1 4 0, a cooling water supply manifold 1 5 0, and a cooling water discharge manifold 6 0 are provided.
- FIG. 1 (b) is an explanatory diagram showing the configuration of the single cell 200.
- the single cell 2 0 0 includes the anode side plate 3 0 0, the force sword side plate 4 0 0, the intermediate plate 5 0 0, the membrane 'electrode assembly 6 0 0, and the seal member 2 1 0 And.
- Each of the three plates 3 0 0, 4 0 0, 5 0 0 is a flat plate in which holes of various shapes are formed by press molding. These plates 3 0 0, 4 0 0, 5 0 0 are formed of a material having gas impermeability and conductivity, such as stainless steel.
- the three plates 3 0 0, 4 0 0, 5 0 0 are stacked to form a separate evening that separates the flow paths of the fuel gas, the oxidizing gas, and the cooling water.
- the membrane-electrode assembly 6 00 includes an electrolyte membrane 6 2 0, an anode 6 4 0, and a force sword 6 6 0.
- the electrolyte membrane 6 20 is an ion exchange membrane having good conductivity in a wet state formed of a fluorine resin material such as naphthion (trademark of DuPont).
- the anode 6 40 and the force sword 6 60 are formed of a porous material having gas diffusibility and conductivity such as carbon cloth.
- platinum or an alloy made of platinum and other metals is supported as a catalyst for the fuel cell reaction.
- the anode 6 4 0 and the force sword 6 60 are collectively referred to as “electrode j”.
- the sealing member 2 1 0 has a gas impermeability such as silicone rubber, elasticity and heat resistance. It is formed with the material which has. As shown by a broken line, a hole for arranging the membrane / electrode assembly 600 is provided in the center of the seal member 210.
- a plurality of through holes are provided in each of the three plate rods 3 0 0, 4 0 0, 5 0 0 and the seal member 2 1 0. These through holes form manifolds 110 to 160 when the unit cells 200 are stacked to form the fuel cell stack 100. Hereinafter, these through holes are also referred to as “male hold holes”. Unused oxidant gas is supplied to the single cell 200 through the oxidant gas supply manifold 1 1 0, and used oxidant gas (power sword age gas) discharged from the single cell 2 0 0 is Oxidized gas exhaust manifold 1 2 0 is exhausted.
- Unused fuel gas is supplied to the single cell 20 0 through the fuel gas supply manifold 13 0, and used fuel gas (anode off gas) discharged from the single cell 2 0 0 is Fuel gas is discharged through the exhaust manifold 1 4 0.
- oxidizing gas and fuel gas are gases used for the fuel cell reaction, so these gases are also called “reaction gas”.
- the cooling water of the fuel cell stack 100 is supplied to the single cell 200 via the cooling water supply manifold 1510. Then, the cooling water flowing through the cooling water passage (not shown) in the separation evening is discharged from the fuel cell stack 100 via the cooling water discharge manifold 160.
- FIG. 2 (a) shows a state where the force sword side plate 400 is viewed from the membrane / electrode assembly 600 (the left side of FIG. 1 (b)).
- Six double-hold holes 4 2 2 to 4 3 2 are provided in the periphery of the force sword-side play rod 400.
- the force sword side plate 400 has a first oxidizing gas supply hole group consisting of a plurality of oxidizing gas supply holes 4 40, and a plurality of A second oxidant gas supply hole group consisting of oxidant gas supply holes 4 42 and an oxidant gas discharge hole group consisting of a plurality of oxidant gas discharge holes 44 4 are provided.
- the first oxidizing gas supply hole group is smaller in distance to the manifold hold hole 4 2 2 than the second oxidizing gas supply hole group. It has become.
- FIG. 2 (b) shows a state in which the player-side play 3 00 is viewed from the intermediate play 5 500 side (left side of FIG. 1 (b)).
- six manifold holes 3 2 2 to 3 3 2 are provided in the periphery of the anode side plate 300. Yes.
- a plurality of fuel gas supply holes 3 5 0 and a plurality of fuel gas discharge holes 3 5 4 are provided in the anode side plate 3 300. It has been.
- FIG. 2 (c) shows a state in which the intermediate plate 500 is viewed from the cathode plate 400 side (the left side of FIG. 1 (b)).
- the intermediate plate ⁇ 5 0 0 has four manifold holes 5 2 2 ⁇ 5 2 8 are provided.
- Comb for communicating the oxidant gas supply holes 4 4 0, 4 4 2 and the oxidant gas supply manifold 1 1 0 to the manifold hole 5 2 2 corresponding to the oxidant gas supply manifold 1 1 0 Toothed oxidizing gas supply flow path holes 5 4 2 are provided. Therefore, by stacking three pre-K 3 0 0, 4 0 0, 5 0 0, the oxidizing gas supply manifold 1 1 0 and the oxidizing gas supply holes 4 4 0, 4 2 communicate with each other, A plurality of oxidizing gas supply passages are formed.
- Gas discharge passage holes 5 4 4 are formed.
- a comb for communicating the fuel gas supply manifold 1 3 0 and the fuel gas supply hole 3 5 0 is connected to the manifold hold hole 5 2 6 forming the fuel gas supply manifold 1 3 0. Toothed fuel gas supply passage holes 5 4 6 are provided.
- the manifold hole 5 2 8 forming the fuel gas exhaust manifold 1 4 0 has a comb-teeth shape for communicating the fuel gas exhaust hole 3 5 4 and the fuel gas exhaust manifold 1 4.
- Fuel gas discharge passage holes 5 4 8 are provided. In the middle play 0 5 0 0, these manifold holes 5 2 2 to 5 2 8 and the gas flow In addition to the passage holes 542, 544, 546, 548, the cooling water discharge manifold 1 60 (male hold holes 332, 432) from the position of the cooling water supply manifold 1 50 (male hold holes 330, 430) A plurality of cooling water passage holes 550 are provided across the position of). These cooling water flow path holes 550 are formed by stacking three plates 300, 400, and 500 to form a cooling water flow path that connects the cooling water supply manifold 1 50 and the cooling water discharge manifold 1 60 to each other. Form.
- FIG. 3 is an explanatory diagram showing the flow of fuel gas in the first embodiment.
- FIG. 3 shows a view of a separate evening with three plates 400, 500, 300 stacked in this order as seen from the left side of Fig. 1.
- the right half of Fig. 3 shows the A—A line (dotted line in Fig. 3 (a)) when the membrane electrode assembly 600 (Fig. 1) and the force sword side plate 400 are laminated on the separator. ) Shows a cross section along the line.
- the left half of (b) shows a cross section along the line B-B (two-dot chain line in Fig. 3 (a)).
- the fuel gas supply passage hole 546 and the fuel gas supply hole 350 are separated from the fuel gas supply manifold 30.
- a fuel gas supply channel 830 for supplying fuel gas to the anode 640 is formed.
- the fuel gas discharge hole 354 and the fuel gas discharge flow path hole 548 form a fuel gas discharge flow path 840 that discharges fuel gas from the anode 640 to the fuel gas discharge manifold 140.
- the fuel gas supply hole 350 and the fuel gas discharge hole 354 are both fuel gas communication holes opened on the electrode side surface of the separator.
- the fuel gas is supplied from the fuel gas supply manifold 130 to the anode 640 via the fuel gas supply flow path 830 as indicated by the arrow in FIG.
- the fuel gas supplied to the anode 640 is used in the fuel cell reaction while flowing through the porous anode 640.
- the spent fuel gas is discharged from the anode 640 to the fuel gas discharge manifold 140 via the fuel gas discharge flow path 840.
- Na The anode 6 40 in this case serves as a fuel gas passage for allowing the fuel gas to pass from the surface of the upstream anode 6 40 to the surface of the downstream anode 6 40.
- FIG. 4 is an explanatory view showing the flow of the oxidizing gas in the first embodiment.
- Fig. 4 (a) shows the separator viewed from the left side of Fig. 1 with three plates 4 0 0, 5 0 0, 3 0 0 stacked in this order.
- Fig. 4 (b) shows the C-C line (Fig. 4 (a)) when the membrane electrode assembly (600) (Fig. 1) and the anode plate (300) are laminated on the separator. A cross section along the chain line is shown.
- an oxidizing gas supply passage hole 5 4 2 and an oxidizing gas supply hole 4 4 0, 4 2 forms an oxidizing gas supply flow path 8 10 for supplying an oxidizing gas from the oxidizing gas supply manifold 110 to the force sword 6 60.
- the oxidizing gas discharge hole 4 4 4 and the oxidizing gas discharge flow path hole 5 4 4 are the oxidizing gas discharge flow path for discharging the oxidizing gas from the cathode 6 60 to the oxidizing gas discharge manifold 1 2 0 8 2 Form 0.
- the oxidizing gas supply holes 4 4 0 and 4 4 2 and the oxidizing gas discharge hole 4 4 4 are both oxidized gas communication holes opened on the electrode side surface of the separator. It becomes.
- the oxidizing gas is supplied from the oxidizing gas supply manifold 1 1 0 to the oxidizing gas supply flow path 8.1 0 as shown by the arrow in FIG. 4 (b).
- the oxidizing gas supplied to the force sword 6 60 is used in the fuel cell reaction while flowing through the porous force sword 6 60.
- the used oxidizing gas is discharged from the force sword 66 60 to the oxidizing gas discharge manifold 120 via the oxidizing gas discharge flow path 8 20.
- the force sword 6 60 in this case serves as an oxidizing gas passage for allowing the oxidizing gas to pass from the upstream cathode 6 60 surface to the downstream cathode 6 60 surface.
- the main flow direction of the oxidizing gas supplied from the upstream oxidizing gas supply hole 44 0 close to the oxidizing gas supply manifold 110 to the force sword 66 60 is C 1 in FIG.
- the direction is parallel to the C line.
- Oxide gas supply manifold 1 1 0 At the position of the oxidizing gas supply hole 4 42, the oxidizing gas is supplied in a direction orthogonal to the main flow direction. In this way, the flow of the oxidant gas is disturbed by the collision of the oxidant gas flow in different directions. Therefore, the flow rate of the oxidant gas is averaged, and the uniformity of the gas flow rate within the force sword 660 is high. Become.
- the oxidizing gas supply flow path 8 10 is formed of the oxidizing gas supply flow path hole 5.
- the oxidizing gas supply hole 4 4 0 or 4 4 2 is closed by any contaminants mixed in the oxidizing gas. To the cathode 6 60. Therefore, in the first embodiment, it is possible to prevent the oxidizing gas flow rate from becoming uneven in the force sword 660 due to the blocking of the oxidizing gas supply hole.
- two oxidizing gas supply holes 4 40 and 4 4 2 are provided in one oxidizing gas supply flow path 8 10, thereby causing the oxidizing gas flows in different directions to collide with each other. be able to. For this reason, since the flow of the oxidizing gas is disturbed by the collision of the oxidizing gas flow in the force sword 60 60, the uniformity of the oxidizing gas flow rate in the force sword 66 60 can be improved.
- the plurality of oxidant gas supply holes constitute the first and second oxidant gas supply hole groups, but the number of oxidant gas supply hole groups is arbitrary two or more.
- the number of In this case, the distance from each of the oxidizing gas supply hole groups to the oxidizing gas supply manifold 110 (manijo, the grooved hole 4 2 2) is set to be different from each other.
- FIG. 5 is an explanatory diagram showing the flow of the oxidizing gas in the second embodiment.
- oval oxidant gas supply holes 4 4 0 a and 4 4 2 a are provided in the force sword side plate 4 0 0 a.
- the other points are the same as in the first embodiment.
- Figure 5 (a) shows a separator with three plates 400a, 500, 300 stacked in this order, as seen from the left side of Figure 1.
- Fig. 5 (b) is along the C-C line (dotted line in Fig. 5 (a)) when the membrane electrode assembly 600 (Fig. 1) and the anode plate 300 are laminated on the separator. A cross section is shown.
- the force sword side plate 400a is provided with a plurality of oxidizing gas supply holes 440a and 442a in a staggered arrangement.
- These oxidizing gas supply holes 440a and 442a are holes connecting the two adjacent oxidizing gas supply holes 440 and 442 (FIG. 4 (a)) of the first embodiment.
- the oxidizing gas supply holes 440a and 442a are expanded communication holes formed by the connecting flow path connecting the adjacent oxidizing gas supply holes 440 and 442 and the oxidizing gas supply holes 440 and 442.
- the plurality of oxidizing gas supply holes 440a are formed by communicating two oxidizing gas supply holes 440 belonging to the first oxidizing gas supply hole group, and a plurality of oxidizing gas supply holes are provided.
- the hole 442a is formed by communicating two oxidation gas supply holes 442 belonging to the second oxidation gas supply hole group. Therefore, it can be said that the two groups of oxidized gas supply holes are provided with expanded communication holes 440a and 442a, respectively.
- the oxidizing gas supply flow path hole 542 and the oxidizing gas supply holes 440a and 442a are formed from the oxidizing gas supply manifold 1 1 0 to the force sword 660 as shown in FIG. 5 (b).
- An oxidizing gas supply channel 810a for supplying an oxidizing gas to is formed. The oxidant gas is supplied from the oxidant gas supply manifold 110 to the force sword 660 through the oxidant gas supply channel 810a as shown by the arrow in FIG.
- the oxidizing gas flow from the upstream oxidizing gas supply hole 440a and the oxidizing gas flow from the downstream oxidizing gas supply hole 442a are the position of the oxidizing gas supply flow path hole 5 42. It is made to collide with. Therefore, the oxidation gas flow within the force sword 660 Since the flow of the oxidizing gas is disturbed by the bump, the uniformity of the oxidizing gas flow rate within the force sword 660 can be improved.
- the oxidizing gas supplied to the force sword 6 60 flows from the entire oval oxidizing gas supply holes 4 40 a, 4 4 2 a toward the downstream. Since the oxidizing gas supply holes 4 4 0 a and 4 4 2 a are formed over the entire width of the force sword 6 60, the uniformity of the oxidizing gas flow rate in the force sword 6 60 can be further increased. .
- Adjacent oxidizing gas supply passage holes 5 4 2 are communicated with each other by oval oxidizing gas supply holes 4 40 a, 4 4 2 a. Since the adjacent oxidizing gas supply flow path holes 5 4 2 communicate with each other, even if any of the oxidizing gas supply flow path holes 5 4 2 is blocked by contaminants mixed in the oxidizing gas, the oxidizing gas is blocked. It is supplied to the force sword 6 60 through the non-oxidizing gas supply passage hole 5 4 2. Therefore, in the second embodiment, it is possible to prevent the oxidizing gas flow rate from becoming nonuniform in the re-cathode 660 due to the blocking of the oxidizing gas supply passage hole 5 42.
- the flow of the oxidizing gas is disturbed by the collision of the oxidizing gas flow in the force sword 6 60.
- the uniformity of the oxidizing gas flow rate can be improved.
- the second embodiment is preferable to the first embodiment in that disproportionation of the oxidizing gas flow rate in the force sword 660 due to the blocking of the oxidizing gas supply passage hole 5 42 can be suppressed.
- the first embodiment is preferable to the second embodiment in that the opening area of the oxidizing gas supply hole provided in the force sword side plate is small and the reduction in rigidity of the force sword side plate can be suppressed. .
- the expanded communication hole is formed by communicating two oxidizing gas supply holes belonging to the same oxidizing gas supply hole group.
- the expanded communication hole is an adjacent oxidizing gas. What is necessary is just to connect the L oxidation gas supply holes (L is an arbitrary integer of 2 or more) provided in the supply flow path.
- L is an arbitrary integer of 2 or more
- an oxidizing gas supply hole 44 0 provided in a certain oxidizing gas supply channel and an oxidizing gas supply channel adjacent to the channel are provided.
- the oxidant gas supply holes 4 4 2 may be communicated with each other. In this case, the arrangement of the enlarged communication holes is not a staggered pattern but a straight line.
- FIG. 6 is an explanatory diagram showing the flow of the oxidizing gas in the third embodiment.
- an oxidizing gas discharge hole 4 4 6 is further provided in the force sword side plate 4 0 0 b, and an oxidizing gas discharge passage hole 5 4 4 b is held in the oxidizing gas discharge manifold 1
- This is different from the first embodiment in that it is formed so as to communicate 20 and the oxidizing gas discharge holes 4 4 4, 4 4 6.
- the other points are the same as in the first embodiment.
- Fig. 6 (a) shows a state in which a separator in which three plates 4 0 0 b, 5 0 0 b and 3 0 0 are stacked in this order is viewed from the left side of Fig. 1.
- Fig. 6 (b) shows the C-C line (Fig. 6 (a)) in a state in which a membrane electrode assembly (600) (Fig. 1) and an anode plate (300) are laminated on a separator. A cross section along the chain line is shown.
- the force sword side plate 4 0 0 b is configured by providing a plurality of oxidizing gas discharge holes 4 4 6 on the cathode side plate 4 400 of the first embodiment. It is.
- the distance from the oxidizing gas exhaust manifold 1 2 0 of the second oxidizing gas exhaust hole group consisting of the plurality of oxidizing gas exhaust holes 4 4 6 is the first distance consisting of the plurality of oxidizing gas exhaust holes 4 4 4. It is larger than the oxidant gas discharge hole group.
- the oxidizing gas discharge channel 8 2 2 is formed by the oxidizing gas discharge channel hole 5 4 4 b and the oxidizing gas discharge holes 4 4 4 and 4 4 6. This is a flow path branched at the end of the intermediate plate 5 0 0 of the gas discharge hole 4 4 6. Since the oxidizing gas discharge flow path 8 2 2 is branched, even if one of the oxidizing gas discharge holes 4 4 4 and 4 4 6 is blocked by water generated by the force sword 6 60 The gas is discharged from the force sword 6 60 through the oxidant gas discharge hole which is not closed.
- the third embodiment it is possible to suppress the oxidant gas flow rate from becoming non-uniform in the downstream portion of the re-cathode 660 due to the blocking of the oxidant gas discharge hole.
- two oxidizing gas supply holes 4 4 0 and 4 4 2 are provided in one oxidizing gas supply channel 8 10. For this reason, the oxidizing gas flow is collided in the force sword 66 60, and the uniformity of the oxidizing gas flow rate in the force sword 66 60 is increased. Further, since the oxidizing gas supply channel 8 10 is branched, it is possible to prevent the oxidizing gas flow rate from becoming uneven in the cathode 6 60 due to the blocking of the oxidizing gas supply hole.
- the third embodiment is preferable to the first embodiment in that disproportionation of the oxidizing gas flow rate in the downstream portion of the force sword 660 due to the blocking of the oxidizing gas discharge hole can be suppressed.
- the first embodiment is more preferable than the third embodiment in that the number of oxidizing gas discharge holes provided in the force sword side plate rod is small and the decrease in rigidity of the force sword side plate rod can be suppressed.
- the force sword side plate 400 0 b has two oxidant gas supply hole groups and two oxidant gas discharge hole groups, but M (M is 1 or more). It may have an arbitrary number of oxidizing gas supply hole groups and N (N is an arbitrary integer of 2 or more) oxidizing gas discharge hole group. Even if the number of oxidant gas supply hole groups is 1, disproportionation of the oxidant gas flow rate in the downstream portion of the cathode 660 due to blockage of the oxidant gas discharge holes can be suppressed.
- FIG. 7 is an explanatory diagram showing the flow of the oxidizing gas in the fourth embodiment.
- one oxidizing gas supply hole 4 4 0 c, 4 4 2 c is provided for one oxidizing gas supply flow path hole 5 4 2 c, and the oxidizing gas supply hole 4 4 2 c differs from the first embodiment in that it is a horizontally long ellipse. The other points are the same as in the first embodiment.
- Fig. 7 (a) shows the separator as viewed from the left side of Fig. 1, with the three plates 4 0 0 c, 5 0 0 c and 3 0 0 stacked in this order.
- Fig. 7 (b) shows the C-C line (Fig. 7 (a)) in a state in which a membrane electrode assembly (600) (Fig. 1) and an anode side plate (300) are laminated on a separator. A cross section along the chain line is shown.
- figure 7 (c) shows a cross section along the line D—D (two-dot chain line in FIG. 7 (a)). As shown in FIG.
- the oxidizing gas supply holes 4 4 0 c and 4 4 2 c corresponding to the adjacent oxidizing gas supply flow path holes 5 4 2 c The distances from the two hold 110 are provided on different straight lines.
- the oxidizing gas supply holes 4 4 0 c and 4 4 2 c having a large opening area are not close to each other. The decrease can be suppressed.
- the oxidizing gas supply flow path hole 5 42 c and the oxidizing gas supply hole 4 40 c form an oxidizing gas supply flow path 8 12.
- the oxidizing gas supply flow path hole 5 42 2 c and the oxidizing gas supply hole 4 4 2 c form an oxidizing gas supply flow path 8 14.
- the oxidant gas is supplied from the oxidant gas supply manifold 110 to the force sword 66 60 through the oxidant gas supply channels 8 1 2 and 8 14.
- the oxidizing gas flow from the upstream oxidizing gas supply hole 4 0 40 c and the oxidizing gas flow from the downstream oxidizing gas supply hole 4 4 2 c are the oxidizing gas supply hole 4 4 Can be collided at 2 c. For this reason, the flow of the oxidizing gas is disturbed by the collision of the oxidizing gas flow in the force sword 66 60, so that the uniformity of the oxidizing gas flow rate in the force sword 66 60 can be improved.
- the oxidizing gas supplied to the force sword 6 60 flows from the whole of the circular oxidizing gas supply hole 4 40 c and the elliptical oxidizing gas supply hole 4 4 2 c toward the downstream. Since these oxidizing gas supply holes 4 4 0 c and 4 4 2 c are formed over the entire width of the force sword 6 60, the uniformity of the oxidizing gas flow rate in the force sword 6 60 is further increased. Can be raised.
- the flow of the oxidizing gas is disturbed by the collision of the oxidizing gas flow in the force sword 6 60.
- the uniformity of the oxidizing gas flow rate can be improved.
- the downstream side oxidant gas supply hole 4 42 c has a horizontally long oval shape
- the upstream side oxidant gas supply hole 44 0 c has a circular shape. If the total opening area is equal to or larger than the total opening area of the upstream oxidizing gas supply hole, the upstream oxidizing gas supply hole and the downstream oxidizing gas supply hole may be formed in different shapes. In this way, by forming the upstream and downstream oxidizing gas supply holes, the oxidizing gas flow from the upstream oxidizing gas supply hole is prevented from colliding with the oxidizing gas from the downstream oxidizing gas supply hole. Can disturb the flow.
- the oxidizing gas supply holes corresponding to the adjacent oxidizing gas supply flow path holes are provided on the straight lines whose distances from the oxidizing gas supply manifold are different from each other.
- the oxidizing gas discharge holes corresponding to the passage holes may be provided on different straight lines with different distances from the oxidizing gas discharge manifold. In this case, since the distance of the oxidizing gas discharge hole becomes larger than that in the case where the oxidizing gas discharge hole is provided on a single straight line, the possibility that the adjacent oxidizing gas discharge hole is simultaneously blocked by the generated water is reduced. Therefore, gas disproportionation in the downstream portion of the cathode due to the blocking of the oxidizing gas discharge hole can be suppressed.
- the oxidizing gas discharge hole is formed over the entire width of the cathode 660 and the uniformity of the oxidizing gas flow rate is further improved, so that the upstream oxidizing gas discharge hole and the upstream oxidation gas are It is preferable to increase the total opening area of one of the gas discharge holes. In this case, since the decrease in rigidity of the force sword side plate can be suppressed, the total opening area of the oxidant gas exhaust hole far from the oxidant gas exhaust manifold is set to the oxidant gas exhaust hole close to the oxidant gas exhaust manifold. It is preferable to make it larger than the total opening area.
- the positions of the holes provided in the anode side plate 300 and the force sword side plate 400 are changed, but in general, oxidizing gas and fuel gas It is only necessary that each flow path with the cooling water is not communicated.
- the anode side plate 3 0 0 is provided at the position of the oxidizing gas supply flow path hole 5 4 2 and the oxidizing gas discharge flow path hole 5 4 4.
- a gas-impermeable member is provided on the cathode side plate at the position of the fuel gas supply passage hole 5 46 and the fuel gas discharge passage hole 5 48 and a gas impervious member is provided on the cathode plate 400. That's fine.
- a gas communication channel (oxidation gas supply channel, oxidant gas discharge channel, fuel gas supply channel, fuel gas discharge channel) that communicates the manifold and the electrode.
- a separate evening is made up of three plates, but a separate evening can be formed in other configurations.
- a plurality of members including a member provided with a flow channel groove and a gas communication hole for forming a gas communication channel, and a member that separates each flow channel of fuel gas, oxidizing gas, and cooling water are provided. It is good also as what forms a separate evening by laminating
- the electrode is formed of a single porous material, and the electrode is used as a gas passage for passing the reaction gas.
- the gas passage can be configured by other methods. is there. For example, by providing a gas diffusion layer formed of a porous material having a higher porosity than the porous material on the electrolyte side on the electrode, the gas diffusion layer having a high porosity can pass through the reaction gas. It becomes a gas passageway.
- a channel groove can be formed on the surface in contact with the electrode of the separator and the channel formed by the channel groove and the electrode can be used as a gas passage.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002587673A CA2587673A1 (en) | 2004-12-08 | 2005-12-07 | Improvement of flow distribution characteristics of fuel cell |
US11/667,682 US20070292738A1 (en) | 2004-12-08 | 2005-12-07 | Flow Distribution Characteristics Of Fuel Cell |
EP05816749A EP1826857A4 (en) | 2004-12-08 | 2005-12-07 | IMPROVEMENTS OF FLOW DISTRIBUTION CHARACTERISTICS OF A FUEL CELL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004354856A JP4923403B2 (ja) | 2004-12-08 | 2004-12-08 | 燃料電池の配流特性の改善 |
JP2004-354856 | 2004-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006062242A1 true WO2006062242A1 (ja) | 2006-06-15 |
Family
ID=36578050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/022910 WO2006062242A1 (ja) | 2004-12-08 | 2005-12-07 | 燃料電池の配流特性の改善 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070292738A1 (ja) |
EP (1) | EP1826857A4 (ja) |
JP (1) | JP4923403B2 (ja) |
KR (1) | KR100845754B1 (ja) |
CN (1) | CN101073177A (ja) |
CA (1) | CA2587673A1 (ja) |
WO (1) | WO2006062242A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007105046A2 (en) * | 2006-03-13 | 2007-09-20 | Toyota Jidosha Kabushiki Kaisha | Separator and fuel cell |
WO2008093200A2 (en) * | 2007-01-29 | 2008-08-07 | Toyota Jidosha Kabushiki Kaisha | Fuel cell and separator constituting the same |
WO2008132896A1 (ja) * | 2007-04-20 | 2008-11-06 | Toyota Jidosha Kabushiki Kaisha | 燃料電池のセパレータおよび燃料電池 |
US8227141B2 (en) | 2006-11-14 | 2012-07-24 | Toyota Jidosha Kabushiki Kaisha | Fuel cell, method of manufacturing fuel cell, and unit cell assembly |
US8685586B2 (en) | 2004-12-08 | 2014-04-01 | Toyota Jidosha Kabushiki Kaisha | Fuel cell separator |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5092530B2 (ja) * | 2006-11-22 | 2012-12-05 | トヨタ自動車株式会社 | 燃料電池 |
KR101766098B1 (ko) * | 2015-12-30 | 2017-08-08 | 현대자동차주식회사 | 연료전지의 다공 패널 |
JP7131497B2 (ja) * | 2019-07-01 | 2022-09-06 | トヨタ自動車株式会社 | 燃料電池 |
Citations (8)
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US20020031698A1 (en) | 2000-05-02 | 2002-03-14 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell having sealant for sealing a solid polymer electrolyte membrane |
JP2002151108A (ja) | 2000-09-04 | 2002-05-24 | Honda Motor Co Ltd | 燃料電池 |
JP2002203588A (ja) * | 2000-12-28 | 2002-07-19 | Mitsubishi Materials Corp | 固体酸化物型燃料電池 |
JP2002280022A (ja) * | 2001-03-16 | 2002-09-27 | Mitsubishi Materials Corp | 燃料電池のガス案内構造 |
JP2002280009A (ja) * | 2001-03-16 | 2002-09-27 | Mitsubishi Materials Corp | 燃料電池にガスを供給するための構造 |
JP2003100321A (ja) * | 2001-09-25 | 2003-04-04 | Toyota Motor Corp | 燃料電池用セパレータとその製造方法 |
JP2003229144A (ja) * | 2002-02-05 | 2003-08-15 | Honda Motor Co Ltd | 燃料電池 |
JP2004220828A (ja) * | 2003-01-10 | 2004-08-05 | Sanyo Electric Co Ltd | 固体高分子形燃料電池用のセパレータ構造 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US5736269A (en) * | 1992-06-18 | 1998-04-07 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell stack and method of pressing together the same |
RU2174728C2 (ru) * | 1994-10-12 | 2001-10-10 | Х Пауэр Корпорейшн | Топливный элемент, использующий интегральную технологию пластин для распределения жидкости |
-
2004
- 2004-12-08 JP JP2004354856A patent/JP4923403B2/ja not_active Expired - Fee Related
-
2005
- 2005-12-07 EP EP05816749A patent/EP1826857A4/en not_active Withdrawn
- 2005-12-07 CA CA002587673A patent/CA2587673A1/en not_active Abandoned
- 2005-12-07 US US11/667,682 patent/US20070292738A1/en not_active Abandoned
- 2005-12-07 CN CNA2005800422464A patent/CN101073177A/zh active Pending
- 2005-12-07 WO PCT/JP2005/022910 patent/WO2006062242A1/ja active Application Filing
- 2005-12-07 KR KR1020077014183A patent/KR100845754B1/ko not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020031698A1 (en) | 2000-05-02 | 2002-03-14 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell having sealant for sealing a solid polymer electrolyte membrane |
JP2002151108A (ja) | 2000-09-04 | 2002-05-24 | Honda Motor Co Ltd | 燃料電池 |
JP2002203588A (ja) * | 2000-12-28 | 2002-07-19 | Mitsubishi Materials Corp | 固体酸化物型燃料電池 |
JP2002280022A (ja) * | 2001-03-16 | 2002-09-27 | Mitsubishi Materials Corp | 燃料電池のガス案内構造 |
JP2002280009A (ja) * | 2001-03-16 | 2002-09-27 | Mitsubishi Materials Corp | 燃料電池にガスを供給するための構造 |
JP2003100321A (ja) * | 2001-09-25 | 2003-04-04 | Toyota Motor Corp | 燃料電池用セパレータとその製造方法 |
JP2003229144A (ja) * | 2002-02-05 | 2003-08-15 | Honda Motor Co Ltd | 燃料電池 |
JP2004220828A (ja) * | 2003-01-10 | 2004-08-05 | Sanyo Electric Co Ltd | 固体高分子形燃料電池用のセパレータ構造 |
Non-Patent Citations (1)
Title |
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See also references of EP1826857A4 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8685586B2 (en) | 2004-12-08 | 2014-04-01 | Toyota Jidosha Kabushiki Kaisha | Fuel cell separator |
WO2007105046A2 (en) * | 2006-03-13 | 2007-09-20 | Toyota Jidosha Kabushiki Kaisha | Separator and fuel cell |
WO2007105046A3 (en) * | 2006-03-13 | 2007-12-06 | Toyota Motor Co Ltd | Separator and fuel cell |
US8101314B2 (en) | 2006-03-13 | 2012-01-24 | Toyota Jidosha Kabushiki Kaisha | Separator and fuel cell |
US8227141B2 (en) | 2006-11-14 | 2012-07-24 | Toyota Jidosha Kabushiki Kaisha | Fuel cell, method of manufacturing fuel cell, and unit cell assembly |
WO2008093200A2 (en) * | 2007-01-29 | 2008-08-07 | Toyota Jidosha Kabushiki Kaisha | Fuel cell and separator constituting the same |
WO2008093200A3 (en) * | 2007-01-29 | 2008-10-16 | Toyota Motor Co Ltd | Fuel cell and separator constituting the same |
US8993188B2 (en) | 2007-01-29 | 2015-03-31 | Toyota Jidosha Kabushiki Kaishi | Fuel cell and separator constituting the same |
WO2008132896A1 (ja) * | 2007-04-20 | 2008-11-06 | Toyota Jidosha Kabushiki Kaisha | 燃料電池のセパレータおよび燃料電池 |
CN101636869B (zh) * | 2007-04-20 | 2012-02-29 | 丰田自动车株式会社 | 燃料电池的分离器和燃料电池 |
JP5083313B2 (ja) * | 2007-04-20 | 2012-11-28 | トヨタ自動車株式会社 | 燃料電池のセパレータおよび燃料電池 |
Also Published As
Publication number | Publication date |
---|---|
CA2587673A1 (en) | 2006-06-15 |
EP1826857A1 (en) | 2007-08-29 |
CN101073177A (zh) | 2007-11-14 |
EP1826857A4 (en) | 2008-05-14 |
JP4923403B2 (ja) | 2012-04-25 |
US20070292738A1 (en) | 2007-12-20 |
KR100845754B1 (ko) | 2008-07-11 |
JP2006164762A (ja) | 2006-06-22 |
KR20070086539A (ko) | 2007-08-27 |
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