WO2011152405A1 - 燃料電池セル - Google Patents
燃料電池セル Download PDFInfo
- Publication number
- WO2011152405A1 WO2011152405A1 PCT/JP2011/062500 JP2011062500W WO2011152405A1 WO 2011152405 A1 WO2011152405 A1 WO 2011152405A1 JP 2011062500 W JP2011062500 W JP 2011062500W WO 2011152405 A1 WO2011152405 A1 WO 2011152405A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- protrusion
- frame
- separator
- manifold hole
- 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
- H01M8/241—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
- H01M8/02—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
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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
- H01M8/0276—Sealing means characterised by their form
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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
- H01M8/028—Sealing means characterised by their material
- H01M8/0284—Organic resins; Organic polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
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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 used as a power generation element of a fuel cell, and more particularly to a fuel cell comprising a plurality of stacked fuel cell stacks.
- Patent Document 1 As this type of fuel cell, for example, there is one described in Patent Document 1.
- the fuel cell described in Patent Document 1 includes a membrane electrode structure integrally having a frame and a pair of separators sandwiching the membrane electrode structure. Then, a plurality of frame body-integrated membrane electrodes are provided by providing protrusions with key-like tips at a plurality of positions of the frame body, providing step portions at a plurality of positions of the separator, and locking each protrusion to the step portions.
- the structure and the pair of separators are integrated.
- the present invention has been made paying attention to the above-mentioned conventional problems, and in a fuel cell comprising a membrane electrode structure having a frame around it and two separators sandwiching the frame and the membrane electrode structure, It aims at providing the fuel cell which can implement
- the fuel cell of the present invention includes a membrane electrode structure having a frame around it, and two separators sandwiching the frame and the membrane electrode structure, and a structure in which a reaction gas is circulated between the frame and the separator. have.
- the frame and both separators have manifold holes that are open on the front and back.
- the fuel cell has a configuration in which the peripheral portion of the manifold hole in the frame extends to the inside of the manifold hole of the separator and covers the inner peripheral surface of the manifold hole of at least one separator.
- the peripheral portion of the manifold hole in the frame has a projection covering the inner peripheral surface of the manifold hole of at least one separator, and the above configuration is used as a means for solving the conventional problems.
- the fuel cell of the present invention can easily and reliably position the two separators with respect to the frame and the membrane electrode structure by the peripheral edge of the manifold hole in the frame, and can also integrate them. It is. And according to the said fuel cell, since the space for arrange
- FIG. 3 is a cross-sectional view based on the line AA in FIG. 2. It is sectional drawing explaining the protrusion of a fuel cell. It is each sectional drawing (A) (B) which shows other embodiment of a permite
- the vertical direction of the drawing is the stacking direction of the fuel cells
- the anode side of the membrane electrode structure is the upper side
- the cathode side is the lower side.
- the anode side and the cathode side may be upside down, and the stacking direction is not limited to the vertical direction.
- the fuel cell FC shown in FIGS. 1 to 3 includes a membrane electrode structure 2 having a frame 1 around it, and two separators 3 and 3 sandwiching the frame 1 and the membrane electrode structure 2.
- the reaction gas is circulated between the frame 1 and the separators 3 and 3.
- the membrane electrode structure 2 is generally called MEA (Membrane Electrode Assembly), and as shown in FIG. 3 in particular, an electrolyte layer 4 made of, for example, a solid polymer is composed of a fuel electrode layer (anode) 5A and an air electrode layer. (Cathode) 5B. Further, in the illustrated membrane electrode structure 2, gas diffusion layers 6A and 6B made of carbon paper, a porous body or the like are laminated on the surfaces of the fuel electrode layer 5A and the air electrode layer 5B, respectively.
- MEA Membrane Electrode Assembly
- an electrolyte layer 4 made of, for example, a solid polymer is composed of a fuel electrode layer (anode) 5A and an air electrode layer. (Cathode) 5B.
- gas diffusion layers 6A and 6B made of carbon paper, a porous body or the like are laminated on the surfaces of the fuel electrode layer 5A and the air electrode layer 5B, respectively.
- the fuel gas (hydrogen) that is one reaction gas is supplied to the fuel electrode layer 5A, and the oxidant gas (air) that is the other reaction gas is supplied to the air electrode layer 5B. Is supplied to generate electricity through an electrochemical reaction.
- the membrane electrode structure 2 includes a membrane electrode structure that includes the electrolyte layer 4, the fuel electrode layer 5A, and the air electrode layer 5B without the gas diffusion layer.
- the frame 1 is integrated with the membrane electrode structure 2 by resin molding (for example, injection molding).
- the frame 1 has a rectangular shape with the membrane electrode structure 2 at the center.
- the frame 1 has three manifold holes H1 to H6 that are open on the front and back at both ends, and the region from each manifold hole group to the membrane electrode structure 2 circulates the reaction gas. It becomes an area.
- Each of the frame 1 and the separators 3 and 3 has a rectangular shape having substantially the same vertical and horizontal dimensions.
- Each separator 3 is formed by press-molding a metal plate such as stainless steel, and a central portion corresponding to the membrane electrode structure 2 is formed in a wave shape in a cross section in the short side direction. This wave shape is continuous in the long side direction. As a result, in each separator 3, each convex portion in the waveform is in contact with the membrane electrode structure 2, and each concave portion in the waveform is a flow path for the reaction gas.
- Each separator 3 has manifold holes H1 to H6 opened on the front and back surfaces at both ends, like the manifold holes H1 to H6 of the frame 1, and extends from each manifold hole group to a corrugated section.
- the region is a reaction gas distribution region.
- the fuel cell FC includes a power generation unit that is a region of the membrane electrode structure 2 in the center.
- region of the gas for reaction from each manifold part to a power generation part are provided in the both sides of the electric power generation part.
- One manifold hole group (H1 to H3) shown on the left side of FIG. 2 has a fuel gas supply (H1), a cooling fluid supply (H2), and an oxidant gas supply (H3). To each other to form a fluid flow path.
- the other manifold hole group (H4 to H6) shown on the right side of FIG. 2 has a fuel gas discharge (H4), a cooling fluid discharge (H5), and an oxidant gas discharge (H6). To each other to form a fluid flow path.
- the supply and discharge may be partially or entirely reversed in positional relationship.
- the fuel battery cell FC has a gas seal between the frame 1 and both separators 3. That is, the fuel cell FC seals the edges of the frame 1 and both separators 3 with the adhesive B. Further, a plurality of fuel cells FC are stacked to form a fuel cell stack. When stacking, the adjacent separators 3 and 3 are also sealed with the adhesive B. In this embodiment, the cooling fluid is circulated between the adjacent separators 3 and 3.
- the gas seal with the above-mentioned adhesive hermetically separates the flow areas of fuel gas, oxidant gas and cooling fluid between the individual layers. That is, in the example shown in FIG. 1, a seal line for allowing the oxidant gas to flow to the air electrode 5 ⁇ / b> B of the membrane electrode structure 2 is provided on the upper surface of the lower separator 3 (and the lower surface of the frame). Further, a seal line is provided on the upper surface of the frame 1 (and the lower surface of the upper separator) for allowing the fuel gas to flow to the fuel electrode 5A of the membrane electrode structure 2. Furthermore, a seal line for circulating the cooling fluid is provided on the upper surface of the upper separator 3.
- the fuel cell FC has a configuration for integrating the frame 1 and the membrane electrode structure 2 with the separators 3 and 3, and the peripheral portions of the manifold holes H ⁇ b> 2 and H ⁇ b> 5 in the frame 1 are separated from the separator 3.
- the peripheral edge portions of the manifold holes H ⁇ b> 2 and H ⁇ b> 5 in the frame 1 are at least partly engaged with the manifold holes H ⁇ b> 2 and H ⁇ b> 5 at the same position of the separator 3.
- FIG. 1 illustrates the case where the protrusion 11 is provided on the entire peripheral edge of the manifold holes H2 and H5 for supplying and discharging the cooling fluid.
- the protrusion 11 may be selectively provided for each manifold hole H1 to H6, or may be provided for all the manifold holes H1 to H6.
- the protrusion 11 protrudes toward the separators 3 and 3 on both sides, and the tip part engages with the peripheral parts (inner peripheral parts) of the manifold holes H2 and H5 of each separator 3.
- both separators 3 and 3 can be easily and reliably positioned with respect to the frame 1 and the membrane electrode structure 2.
- the projections 11 are provided at the peripheral edge portions of the manifold holes H2 and H5 in the frame 1, a space such as a blank space for arranging the projections 11 is unnecessary, and the separator 3 side is dedicated for positioning. No configuration is required.
- the fuel cell FC can be reduced in size and the number of man-hours can be reduced, and the fuel cell stack and the entire fuel cell can be reduced in size and weight, and the production efficiency can be improved.
- the protrusion 11 can be integrated with the frame 1 during the resin molding.
- the protrusions 11 function as an insulator and prevent an electrical short circuit between the separators 3, 3. . That is, even if the entire cell expands and contracts due to swelling of the membrane electrode structure 2, the end faces of the separators 3 and 3 can always be covered so as not to cause a short circuit.
- the corrosion rate of the inner peripheral surfaces can be suppressed, and the durability and reliability of the fuel cell FC and the fuel cell stack are improved. Can contribute.
- the fuel cell FC described above extends to the periphery of the manifold holes H1 to H6 in the frame 1, that is, to the inside of the manifold holes H2 and H5 of the separator 3, and the inner peripheral surfaces of the manifold holes H2 and H5.
- Positioning function of the separators 3 and 3 with respect to the frame 1 and the membrane electrode structure 2 by the configuration of the peripheral edge portion and, more specifically, the peripheral edge portion having the projection 11 that covers the inner peripheral surfaces of the manifold holes H2 and H5 of the separator 3
- the electrical insulation function of the separator 3 can be made compatible.
- the fuel cell using the fuel cell FC is very suitable for mounting on a moving body such as an automobile where space is limited.
- the protrusion 11 includes a protrusion that protrudes long toward the lower (or upper) separator 3 as indicated by a virtual line in FIG.
- the protrusions 11 are connected to the peripheral portions of the manifold holes H2 and H5 of the self-separator 3 and the manifold holes H2 of the separator (shown by phantom lines) 3 adjacent to the lower side. Engage with the peripheral edge of H5.
- the protrusion 11 may be provided on at least a part of the peripheral edge of the manifold hole. However, by providing the protrusion 11 on the entire peripheral edge of the manifold hole, when the fuel cell stack is configured, the protrusion 11 is continuously provided in the stacking direction. A flow path can be formed. In this case, a part of the upper side may be omitted as shown in FIG. 5A, or a part of the lower side may be omitted as shown in FIG.
- the manifold holes H1 to H6 are used to supply / discharge reaction gas to / from the power generation unit G and supply / discharge cooling fluid, so that the reaction gas or cooling fluid flows between predetermined layers.
- the protrusion 11 of the corresponding part is partially omitted or processed.
- the fuel gas is circulated through the projections 11 in the fuel gas supply and discharge manifold holes H1 and H4. Provide notches and through holes.
- the notch or the through hole serving as the inlet is provided.
- a diffuser function can be provided. Thereby, the diffuser part between the manifold part and the power generation part can be reduced or eliminated, and further reduction in size and weight of the fuel cell FC can be realized. Therefore, the fuel cell stack, which is a stack of such fuel cells FC, is further miniaturized and is extremely suitable for a small fuel cell for a moving body.
- the cooling fluid is filled between the flow paths continuous in the stacking direction and the separators 3 and 3 adjacent to each other in the stacking state.
- the projection 11 which is a part of the frame 1 is interposed between the cooling fluid (refrigerant) and the separator end surface, the liquid resistance increases and a leakage current flowing between the separator end surface and another separator 3 is generated. As a result, the corrosion rate due to the leakage current at the end face of the separator can be suppressed.
- the fuel cell FC of the present invention has a contour line that is concentric with the manifold holes H1 to H6 of the frame 1 and circumscribes the protrusions 21 as shown in FIG. A configuration may be employed in which the holes H1 to H6 are positioned outside the contour lines. That is, the passing dimension a of the contour line circumscribing the protrusion 21 is larger than the passing dimension b of the manifold holes H1 to H6 of the separator 3 (a> b).
- the protrusions 21 constituting the peripheral portions of the manifold holes H1 to H6 in the frame 1 are located outside the peripheral portions of the manifold holes H1 to H6 of the separator 3. Further, as shown in FIG. 7, when some of the manifold holes H1 and H6 have the divided projections 21, the passing dimension (a) of the contour line circumscribing all the projections 21 is set to the manifold hole H1. , H6 is larger than the passing dimension (b).
- the protrusion 21 shown in FIG. 6 has a hook shape in which both the upper side and the lower side pass through the manifold holes H1 to H6 of the separator 3 and are locked.
- the protrusion 31 shown in FIG. 8 has an inverted triangular cross section, and in this case also, the protrusion 31 passes through the manifold holes H1 to H6 of the separator 3 and is in a locked state.
- the protrusion 11 shown in FIG. 9 has the same shape as that shown in FIGS.
- the protrusions 11 to 31 of the frame 1 are engaged with the manifold holes H1 to H6 of the separator 3 with elastic deformation. Further, the protrusions 21 and 31 shown in FIGS. 6 and 8 are engaged with and fixed to the manifold holes H1 to H6 with elastic deformation. Thereby, both the separators 3 and 3 can be easily and reliably positioned with respect to the frame 1 and the membrane electrode structure 2, and both can be easily integrated without using other components. it can.
- the protrusions that form the peripheral portions of the manifold holes H1 to H6 in the frame 1 are formed between the adjacent fuel cells when the fuel cells FC are stacked in a plurality. It can be set as the structure provided with the junction part of the anode side and cathode side which mutually contact
- the protrusion 41 has an upper protrusion 41A protruding to the anode side and a lower protrusion 41B protruding to the cathode side.
- the upper protrusion 41A and the lower protrusion 41B are displaced from each other in a step shape inward and outward of the manifold holes H1 to H6.
- the upper protrusion 41 forms a gap between the peripheral edges of the manifold holes H1 to H6 of the separator 3, and the tip portion that forms the gap serves as the upper joint SA, while the upper protrusion 41 has the tip.
- the portion is a lower joint SB.
- the lower joint SB of the protrusion 41 in the upper fuel cell FC is connected to the upper joint of the protrusion 41 in the lower fuel cell FC.
- the protrusion 21 has a bowl-shaped upper protrusion 21A protruding to the anode side and a bowl-shaped lower protrusion 21B protruding to the cathode side.
- the upper protrusion 21A has an inclined surface that faces outward with respect to the manifold holes H1 to H6 in its cross section, and this inclined surface serves as the upper joint SA.
- the lower protrusion 21B has an inclined surface that is inward with respect to the manifold holes H1 to H6 in its cross section, and this inclined surface serves as the lower joint portion SB.
- the lower joint portion SB of the protrusion 21 in the upper fuel cell FC is connected to the upper joint of the protrusion 21 in the lower fuel cell FC. It is made to contact part SA. This makes it very easy to position and integrate the fuel cells FC when configuring the fuel cell stack, thereby reducing man-hours and further improving production efficiency.
- the protrusions constituting the peripheral portions of the manifold holes H1 to H6 in the frame 1 are provided with joint portions on the anode side and the cathode side.
- it can be set as the structure which has the uneven
- the protrusion 51 has an upper protrusion 51A that protrudes toward the anode side and a lower protrusion 51B that protrudes toward the cathode, as in the case shown in FIG.
- the upper protrusion 41 has a concavo-convex upper joint SA that faces outward with respect to the manifold holes H1 to H6 at the tip.
- the upper protrusion 41 has a concave and convex lower joint portion SB that is inward with respect to the manifold holes H1 to H6 at the tip portion.
- the uneven lower joint SB in the upper fuel cell FC is connected to the uneven upper joint in the lower fuel cell FC.
- the protrusion 61 has a hook-like upper protrusion 61A protruding to the anode side and a hook-like lower protrusion 61B protruding to the cathode side, as shown in FIG. Have.
- the upper protrusion 21A has an inclined surface that is outward with respect to the manifold holes H1 to H6 in its cross section, and a part of the inclined surface is formed in an uneven shape, and the inclined surface including the unevenness is formed on the upper joint SA. It is said.
- the lower protrusion 21B has an inclined surface that is inward with respect to the manifold holes H1 to H6 in its cross section, and a part of the inclined surface is formed in an uneven shape. It is set as the side junction part SB.
- the lower joint SB in the upper fuel cell FC is brought into contact with the upper joint SA in the lower fuel cell FC. Match.
- the fuel cell stack is configured, the positioning and integration of the fuel cells FC are facilitated, and the engagement state between the protrusions 51 becomes stronger.
- the protrusions constituting the peripheral edge portions of the manifold holes H1 to H6 in the frame 1 are provided with joint portions on the anode side and the cathode side.
- one joint has an inclined surface facing inward with respect to the manifold hole
- the other joint has an inclined surface facing outward with respect to the manifold hole and the manifold hole.
- it can be configured to have flexibility in the inner and outer directions.
- one joint is the upper joint SA
- the other joint is the lower joint SB.
- the lower joint SB of the upper fuel cell FC and the upper joint SA of the lower fuel cell FC are in contact with each other. At this time, as shown in FIGS. 14 and 15, the push-in amount in the stacking direction can be appropriately selected.
- the lower joint portion SB is an inclined surface including unevenness, and the height of the protrusion gradually increases from the upper side to the lower side.
- the upper joint portion SA is an inclined surface including irregularities, and the depth of the concave portion is gradually reduced from the upper side to the lower side.
- the upper protrusion 61A and the lower protrusion 61B each have an inclined surface in which the upper joint portions SA and SB both include irregularities, and the angle of the inclined surface is the same.
- the predetermined amount ( ⁇ ) is different.
- the protrusion 61 When the pushing amount in the stacking direction is increased when the fuel cell stack is configured, the protrusion 61 has a flexible upper protrusion 61A as shown in FIGS. 14 (B) and 15 (B). The tip portion is displaced inward of the manifold holes H1 to H6.
- the fuel cell FC having the above-described configuration can obtain the same operations and effects as those of the previous embodiment when configuring the fuel cell stack, and can adjust the push amount in the stacking direction to adjust the manifold.
- the amount of displacement (Q in FIG. 14) of the upper protrusion 61A into the holes H1 to H6 can be increased or decreased to change the size (cross-sectional area) D of the flow path formed inside the protrusion 61.
- the reaction gas is supplied to each fuel cell FC while flowing the reaction gas in the stacking direction in the manifold portion.
- the displacement amount of the upper protrusion 61A is partially changed, and the flow path size D is partially changed, so that the flow rate and flow velocity of the reaction gas in the stacking direction can be made uniform.
- the fuel cell performance can be improved.
- the range (displacement amount Q) of the displacement of the upper protrusion 61A can be further increased by making the height and depth of the uneven protrusions different.
- the fuel cell FC of the present invention has a sealing material SM in which the surface of each joint SA, SB and the contact portion with the separator 3 in the protrusion 21 are indicated by bold lines in the drawing, as shown in FIG. It can be set as the structure coat
- the sealing material SM may be provided on the entire surface of the protrusion 21 in consideration of manufacturing efficiency and the like.
- the fuel cell FC having the above configuration can obtain the same operations and effects as those of the previous embodiments when the frame 1 and the membrane electrode structure 2 and the separators 3 are overlapped.
- the sealing function SM for covering the contact portion with the separator 3 can further enhance the sealing function for the reaction gas.
- the sealing material SM that covers the surfaces of the joints SA and SB further increases the adhesion between the adjacent protrusions 21.
- the sealing function against the reaction gas and the cooling fluid can be further enhanced.
- the sealing material SM can be provided on the protrusions of the embodiments shown in FIGS. 4 to 6 and FIGS. 8 to 15.
- the configuration of the fuel cell of the present invention is not limited to each of the above embodiments, and the shape, number, material, and the like of each component are appropriately changed without departing from the gist of the present invention. Is possible.
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Abstract
Description
2 膜電極構造体
3 セパレータ
11 21 突起
31 41 突起
51 61 突起
FC 燃料電池セル
H1~H6 マニホールド穴
SA 上側接合部
SB 下側接合部
SM シール材料
Claims (11)
- 周囲にフレームを有する膜電極構造体と、フレーム及び膜電極構造体を挟持する二枚のセパレータを備えると共に、フレームとセパレータとの間に反応用ガスを流通させる構造を有する燃料電池セルであって、
フレーム及び両セパレータが、表裏に開放された夫々のマニホールド穴を有し、
フレームのマニホールド穴の周縁部が、セパレータのマニホールド穴の内側に延出すると共に、少なくとも一方のセパレータのマニホールド穴の内周面を覆っていることを特徴とする燃料電池セル。 - フレームのマニホールド穴の周縁部が、少なくとも一方のセパレータのマニホールド穴の内周面を覆う突起を有していることを特徴とする請求項1に記載の燃料電池セル。
- フレームのマニホールド穴と同心状を成し且つ前記突起に外接する輪郭線が、セパレータのマニホールド穴の輪郭線よりも外側に位置していることを特徴とする請求項2に記載の燃料電池セル。
- 前記突起が、セパレータのマニホールド穴を貫通して係止する鉤状を成していることを特徴とする請求項2又は3に記載の燃料電池セル。
- 前記突起が、当該燃料電池セルを複数積層した際に隣接する燃料電池セル同士の間で互いに当接するアノード側及びカソード側の接合部を備えていることを特徴とする請求項2~4のいずれか1項に記載の燃料電池セル。
- 前記突起のアノード及びカソード側の接合部が、互いに係合する凹凸形状を有していることを特徴とする請求項5に記載の燃料電池セル。
- アノード側及びカソード側の接合部のうちの一方の接合部が、マニホールド穴に対して内向きの傾斜面を有すると共に、他方の接合部が、マニホールド穴に対して外向きの傾斜面とマニホールド穴に対して内外方向の可撓性を有することを特徴とする請求項5又は6に記載の燃料電池セル。
- 前記突起における各接合部の表面が、シール材料で被覆してあることを特徴とする請求項5~7のいずれか1項に記載の燃料電池セル。
- 前記突起におけるセパレータとの接触部分が、シール材料で被覆してあることを特徴とする請求項2~8のいずれか1項に記載の燃料電池セル。
- 前記突起が、樹脂成形によりフレームと一体化してあることを特徴とする請求項2~9のいずれか1項に記載の燃料電池セル。
- 請求項1~10のいずれか1項に記載の燃料電池セルを複数枚積層して成ることを特徴とする燃料電池スタック。
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CN201180027174.1A CN102918699B (zh) | 2010-06-01 | 2011-05-31 | 燃料电池单元 |
JP2012518403A JP5445679B2 (ja) | 2010-06-01 | 2011-05-31 | 燃料電池セル |
CA2801416A CA2801416C (en) | 2010-06-01 | 2011-05-31 | Fuel cell |
US13/701,090 US8974980B2 (en) | 2010-06-01 | 2011-05-31 | Fuel cell |
EP11789808.0A EP2579376B1 (en) | 2010-06-01 | 2011-05-31 | Fuel cell |
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EP (1) | EP2579376B1 (ja) |
JP (1) | JP5445679B2 (ja) |
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Cited By (5)
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WO2014009397A1 (fr) * | 2012-07-10 | 2014-01-16 | Areva Stockage D'energie | Pile à combustible à isolation électrique améliorée |
WO2017145436A1 (ja) * | 2016-02-23 | 2017-08-31 | 日産自動車株式会社 | 燃料電池スタック |
US10014548B2 (en) | 2012-12-07 | 2018-07-03 | Honda Motor Co., Ltd. | Fuel cell |
JP2019160655A (ja) * | 2018-03-15 | 2019-09-19 | トヨタ自動車株式会社 | 燃料電池スタック |
JP2021114428A (ja) * | 2020-01-21 | 2021-08-05 | トヨタ紡織株式会社 | 燃料電池のセルスタック |
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JP5891379B2 (ja) * | 2011-02-22 | 2016-03-23 | パナソニックIpマネジメント株式会社 | 燃料電池及びそれを備える燃料電池スタック |
EP2991143B1 (en) | 2013-04-22 | 2018-06-06 | Nissan Motor Co., Ltd. | Cell structure for fuel cell stack |
KR101655509B1 (ko) * | 2013-12-24 | 2016-09-07 | 현대자동차주식회사 | 연료전지용 분리판 조립체 및 이의 제조방법 |
JP6395121B2 (ja) * | 2015-05-13 | 2018-09-26 | 日産自動車株式会社 | 燃料電池スタック |
CN107534179B (zh) * | 2015-05-13 | 2021-07-30 | 日产自动车株式会社 | 燃料电池堆 |
CN108604692B (zh) * | 2016-02-15 | 2019-11-08 | 日产自动车株式会社 | 燃料电池的单电池构造 |
JP7061528B2 (ja) * | 2018-07-13 | 2022-04-28 | 本田技研工業株式会社 | 燃料電池用セパレータ及び燃料電池スタック |
DE102020213212A1 (de) * | 2020-10-20 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Körper für eine Brennstoffzelle, Brennstoffzelle, Brennstoffzellenstapel, Verfahren zum Herstellen eines Körpers, Verfahren zum Herstellen einer Brennstoffzelle sowie Verfahren zum Herstellen eines Brennstoffzellenstapels |
DE102020216100A1 (de) * | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Elektrochemische Zelle und Verfahren zum Herstellen einer elektrochemischen Zelle |
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- 2011-05-31 US US13/701,090 patent/US8974980B2/en active Active
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- 2011-05-31 CA CA2801416A patent/CA2801416C/en active Active
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Cited By (8)
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WO2014009397A1 (fr) * | 2012-07-10 | 2014-01-16 | Areva Stockage D'energie | Pile à combustible à isolation électrique améliorée |
US10014548B2 (en) | 2012-12-07 | 2018-07-03 | Honda Motor Co., Ltd. | Fuel cell |
WO2017145436A1 (ja) * | 2016-02-23 | 2017-08-31 | 日産自動車株式会社 | 燃料電池スタック |
JPWO2017145436A1 (ja) * | 2016-02-23 | 2018-12-06 | 日産自動車株式会社 | 燃料電池スタック |
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JP2019160655A (ja) * | 2018-03-15 | 2019-09-19 | トヨタ自動車株式会社 | 燃料電池スタック |
JP2021114428A (ja) * | 2020-01-21 | 2021-08-05 | トヨタ紡織株式会社 | 燃料電池のセルスタック |
JP7396069B2 (ja) | 2020-01-21 | 2023-12-12 | トヨタ紡織株式会社 | 燃料電池のセルスタック |
Also Published As
Publication number | Publication date |
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EP2579376B1 (en) | 2017-04-19 |
CN102918699B (zh) | 2015-03-18 |
EP2579376A1 (en) | 2013-04-10 |
CN102918699A (zh) | 2013-02-06 |
JP5445679B2 (ja) | 2014-03-19 |
CA2801416C (en) | 2015-03-10 |
CA2801416A1 (en) | 2011-12-08 |
US8974980B2 (en) | 2015-03-10 |
EP2579376A4 (en) | 2016-06-01 |
JPWO2011152405A1 (ja) | 2013-08-01 |
US20130115541A1 (en) | 2013-05-09 |
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