1527results about "Sealing/support means" patented technology

The invention discloses a fuel cell bipolar plate sealing element laminating process which comprises the following steps: S1, providing a laminating tool which comprises a first tool plate and a second tool plate; s2, the prefabricated sealing part is installed on the first tool plate; s3, mounting the bipolar plate coated with the adhesive on a second tool plate; s4, the first tool plate and the second tool plate are positioned and assembled, so that the bipolar plate and the prefabricated sealing element are pre-attached; and S5, pressing the prefabricated sealing element by using a first tool plate, so that the prefabricated sealing element is completely attached to the sealing groove in the bipolar plate. According to the fuel cell bipolar plate sealing element attaching process, the tool assistive device is used for positioning, the position of the prefabricated sealing element is positioned, the positioning accuracy of the position of the sealing element can be improved, and then the consistent performance of a product can be guaranteed.

Bipolar plate (1) for an electrochemical system, in particular for an electrolyzer, comprising at least one layer (2) and at least one insert (10), the layer (2) comprising - at least one through-opening (3, 4) as an inlet or outlet for a fluid, - a flow field (8) with an electrochemically active region, wherein the insert (10) is arranged at the through-opening (3, 4) and comprises a fluid guidance structure (12) for guiding the fluid, wherein the fluid guiding structure (12) of the insert (10) has several protrusions (14, 24) and is arranged in the flow direction of the fluid between the flow field (8) and the through-opening (3, 4), such that the fluid is guided from the through-opening (3, 4) through the fluid guiding structure (12) between the protrusions (14, 24) to the flow field (8) or vice versa, wherein the fluid guidance structure (12) comprises a first area (18) and a second area (19) which are arranged next to each other in the direction of fluid flow, wherein the elevations (14, 24) in the first area (18) and in the second area (19) each have different distances from each other and / or are arranged at different densities and / or are shaped differently, such that a flow cross-section in the first area (18) is smaller than a flow cross-section in the second area (19) and / or a flow resistance in the first area (18) is greater than a flow resistance in the second area (19).

The present invention provides a method of fixing a separator to a first frame member of a battery cell stack. The method includes creating a securing region including a first region and a second region, where creating the first region includes securing the diaphragm to the first frame member, and where creating the second region includes mechanically compressing the diaphragm using a protrusion of the frame member or using a sealing portion. Also provided are cell stacks and use of ion exchange membranes in the disclosed cell stacks.

The present invention provides: a thermosetting adhesive sheet which can be stored at room temperature and completes bonding without requiring a curing process after thermal compression bonding, while being capable of suppressing bonding defects such as lifting, separation and voids after the bonding even in a high-temperature high-humidity environment; and such a sub gasket for fuel cells.　The present invention provides a thermosetting adhesive sheet 10 that is used for the purpose of sealing the periphery of an electrolyte membrane-electrode structure, which is obtained by arranging electrodes on both sides of a solid polymer electrolyte membrane, of a fuel cell. This thermosetting adhesive sheet 10 comprises an adhesive layer 14 which is formed of a cured product of an adhesive composition that contains a polyurethane resin having a reactive functional group and a crosslinking agent; the adhesive layer 14 has a gel fraction of 60% by mass or more; the storage elastic modulus (G'100) at 100°C of the adhesive layer 14 is 5.0 × 104 Pa to 1.0 × 108 Pa; and the decrease rate of the storage elastic modulus (G'120) at 120°C relative to the storage elastic modulus (G'100) at 100°C is 0.5 or less.

An electrochemical cell comprising a non electrically-conductive structural frame for supporting components of the electrochemical cell and a tensioning element, wherein the structural frame comprises engagement means adapted to engage the tensioning element, wherein the engagement means comprises at least two bosses on the structural frame, each boss adapted to engage with a corresponding aperture on the tensioning element.

To make an adhesive less likely to spread beyond a desired application area when bonding a gas diffusion layer to an intermediate layer in the manufacturing stage of a fuel cell.SOLUTION: Using an adhesive coating system, an adhesive is applied on an intermediate layer in a manufacturing step of a fuel cell with the intermediate layer and gas diffusion layers on both sides of the intermediate layer. The adhesive application system has an application unit, a robot arm, and a controller. The application unit applies an adhesive when a valve is opened. The robot arm can move the application unit. The controller controls the valve and the robot arm. The controller linearly applies the adhesive to the intermediate layer from the application start point, by opening the valve before the application unit becomes located immediately on the application start point while moving the application unit by the robot arm.SELECTED DRAWING: Figure 3

The invention relates to a method for producing cell frames (10), in particular single-part or multi-part anode frames (12) and / or single-part or multi-part cathode frames (14) for individual cells (16), arranged within a stack structure (18) of an electrolyzer (20) or a fuel cell (20), wherein the following method steps are carried out: a) providing blanks (22) made of thermoplastic organic sheets (24), b) producing a single-part or multi-part anode frame (12) and / or a single-part or multi-part cathode frame (14) made of thermoplastic organic sheets (24) in a pressing device (26), and c) applying at least one sealing contour (28, 44, 48).Furthermore, the invention relates to a cell frame (10), in particular a single-part or multi-part anode and / or a single-part or multi-part cathode frame (12, 14), and to the use of the method for producing single-part or multi-part anode and / or single-part or multi-part cathode frames (12, 14).

The invention discloses an adhesive composition for a fuel cell and a preparation method thereof, and relates to the technical field of fuel cells, the adhesive composition comprises a release layer I, a hot melt adhesive layer I, a hot melt adhesive layer II and a release layer II which are arranged in sequence; the hot melt adhesive layer I is an acid modified polyolefin resin hot melt adhesive layer, and the hot melt adhesive layer II is a modified polyurethane resin hot melt adhesive layer. Therefore, the manufacturing process of the single cell is simple, the efficiency and the yield are remarkably improved, the production efficiency is greatly improved, and meanwhile, only the adhesive layer is used when the cell is packaged and processed, so that the production cost is effectively reduced.

The present invention discloses an adhesive composition for fuel cells and a preparation method thereof, which relates to the technical field of fuel cells, and comprises a release layer I, a hot melt adhesive layer I, a hot melt adhesive layer II and a release layer II arranged in sequence; the hot melt adhesive layer I is an acid-modified polyolefin resin hot melt adhesive layer, and the hot melt adhesive layer II is a modified polyurethane resin hot melt adhesive layer. The single cell manufacturing process is simplified, the efficiency and yield are significantly improved, and the production efficiency is greatly improved. At the same time, only the adhesive layer is used during the battery packaging process, which effectively reduces the production cost.

The invention relates to the technical field of adhesives, in particular to a hot melt adhesive, a preparation method thereof and a fuel cell membrane electrode. The hot melt adhesive comprises a first bonding layer and a second bonding layer; the first bonding layer comprises polyester resin, a styrene thermoplastic elastomer, a grafted toughening agent, an epoxy chain extender and a first organic solvent; the second bonding layer comprises an ethylene-methyl acrylate copolymer, a copolyester hot melt adhesive, an ethylene-methyl acrylate-glycidyl methacrylate terpolymer, an epoxy ring-opening accelerant and a second organic solvent. The hot melt adhesive provided by the invention has a two-layer structure, can realize good bonding of PEN and PFSA, does not blister or crack after being soaked in a sulfuric acid aqueous solution with the pH value of 2 at 95 DEG C for more than 2000h, can maintain good bonding performance, and has no crystal point in a formed film.

The invention relates to an electrochemical cell assembly (10) comprising an end plate (14, 18), a stack (20) comprising a plurality of cell units (22) that are stacked upon one another along a stacking direction (24), and an insulating plate (32) that is interposed between the end plate and the stack, wherein the cell units each comprise a periphery (52) and a central portion (54), wherein at least one cut-out (76) is provided in the insulating plate, said cut-out extending through the insulating plate along the stacking direction, and wherein at least one inset (78) is positioned in said cut-out such that, seen along the stacking direction, the inset and the central portion overlap each other, said inset being formed from a ceramic material.

The invention relates to a solid oxide fuel cell, and provides a solid oxide fuel cell composite support body, a preparation method thereof, a solid oxide fuel cell and a preparation method thereof, and the preparation method of the solid oxide fuel cell composite support body comprises the following steps: S1, preparing sacrificial layer slurry, support layer slurry and transition layer slurry; s2, the sacrificial layer slurry, the supporting layer slurry and the transition layer slurry are sequentially placed in a casting machine, the sacrificial layer slurry is placed at the bottom, a blank obtained after casting is subjected to phase inversion curing in a water bath, a sacrificial layer is removed, and the composite supporting body is obtained. According to the preparation method of the composite support body provided by the invention, thermal expansion matching is synergistically optimized through the phase inversion finger-shaped hole support layer and the gradient transition layer, the bonding interface is strengthened, the bonding strength and the electrochemical performance of the battery are remarkably improved, and the composite support body is suitable for vehicle-mounted and distributed energy systems.

A hot melt adhesive sheet according to the present invention is a hot melt adhesive sheet including a base material having at least one surface on which an adhesive layer made of a hot melt adhesive is disposed. The hot melt adhesive includes a crosslinked product of an adhesive composition including a crosslinking agent, and includes a polyurethane resin, an epoxy resin, and 6 mass parts or more and 14 mass parts or less of an isocyanate-based crosslinking agent based on 100 mass parts of the polyurethane resin. The polyurethane resin has a constituent unit derived from a polyol having a skeleton with 8 or more carbon atoms. The epoxy resin is a bisphenol A type epoxy resin having an epoxy equivalent of 450 g / eq or more and 3000 g / eq or less.

The invention relates to a method for manufacturing a bipolar plate (10, 51) for an electrochemical cell unit (53) for converting electrochemical energy into electrical energy as a fuel cell unit (1) and / or for converting electrical energy into electrochemical energy as an electrolytic cell unit (49) having stacked electrochemical cells (52), the method comprising the steps of: providing a first plate 64) and a second plate (65), stacking the first plate (64) and the second plate (65) on top of one another such that inner surfaces (66) of the first and second plate (64, 65) lie on top of one another, applying contact forces to the first and second plates (64, 65) by means of negative pressure in a negative pressure chamber (104) relative to an ambient pressure so that, as a result of the contact forces applied by the ambient pressure, the inner surfaces (66) of the first and second plate (64, 65) lie on top of one another with an additional compression force in a contact region (68) due to the applied contact forces, producing at least one welded joint (69) between the first and second plate (64, 65) by means of a laser beam (74), forming connection channels (89) for process fluids in the first and / or second plate (64, 65), the channels opening into fluid openings (41) in the bipolar plates (10), 51) and into channels (12, 13, 14) for process fluids in the bipolar plates (10, 51), forming connection openings (93) in the first and / or second plate (64, 65) which connect the connection channels (89) to the channels (12, 13, 14) for process fluids in the bipolar plates (10, 51), the connection openings (93) being formed in the first and / or second plate (64, 65) by means of a laser beam (74).

The invention relates to the field of flow battery energy storage, and discloses a flow battery high-carbon bipolar plate and flow frame integrated packaging process and structure, and the process comprises the following steps: step 1, before welding, preparing a hot melt adhesive tape matched with the shape of a positioning groove at the inner side of a flow frame, and pasting the hot melt adhesive tape in the positioning groove; 2, a silica gel gasket is laid on the laser welding platform, and then the bipolar plate is placed and buckled with the liquid flow frame through a positioning groove; positioning the liquid flow frame by using a positioning pin on the laser welding platform; 3, a transparent heat-resistant silica gel gasket is placed in a welding area on the liquid flow frame, and pressurization is conducted through tempered glass; step 4, adjusting a laser, setting laser parameters and an advancing track according to the material size, enabling laser to penetrate through a liquid flow frame to act on the contact surface of the hot melt adhesive and the black bipolar plate, and melting the hot melt adhesive to realize welding to finish welding; 5, after welding is completed, pressure maintaining and cooling are conducted, and the integrated packaging structure is obtained.

The composite polar plate single battery comprises a first composite polar plate, a first sealant, a membrane electrode, a second composite polar plate, a second sealant and a third sealant, the membrane electrode is arranged between the first composite polar plate and the second composite polar plate, and the membrane electrode respectively abuts against the first composite polar plate and the second composite polar plate; the first sealant is arranged between the first composite polar plate and the membrane electrode, the second sealant is arranged between the second composite polar plate and the membrane electrode, and the third sealant is arranged at the edge of one side surface, far away from the membrane electrode, of the second composite polar plate in a surrounding manner. The invention also provides an electric pile. The composite polar plate single battery disclosed by the invention is thin in thickness, small in size, wider in application range and scene, lower in whole-cycle use cost and capable of bringing higher economic benefits. And the volume of the electric pile prepared from the single battery is correspondingly reduced, so that the defects of the traditional polar plate electric pile can be effectively improved.

The invention relates to a sealing arrangement which is provided for an electrochemical cell and comprises a metal plate (7) and a seal (18, 19) that is located thereon and that forms at least one closed sealing ring located on the plate (7). According to the invention, a circumferential inner support structure (20, 22) supporting the seal (18, 19) inwardly is formed and an outer support structure (21, 23) supporting the seal (18, 19) outwardly is formed, said support structures being made of sintered metal and being integrally bonded to the plate (7).

Provided are: a photocurable adhesive composition for a polymer electrolyte, which contains components (A) to (D) at specified proportions; and a layered product. Component (A) is a urethane (meth)acrylate obtained by reacting component (a1), component (a2) and component (a3) (component (a1) is a hydrogenated polybutadiene or hydrogenated polyisoprene having a hydroxyl group at a terminal, component (a2) is an aromatic diisocyanate, and component (a3) is a (meth)acrylate having one hydroxyl group per molecule. Component (B) is an alkyl (meth)acrylate having an alkyl group with 4-20 carbon atoms. Component (C) is an epoxidized polybutadiene or an epoxidized polyisoprene. Component (D) is a radical photopolymerization initiator.

To facilitate a blur inspection of a composite member for fuel cells.SOLUTION: A composite member 1 for fuel cells comprises: a separator 2 including on a surface 2U a gasket body arrangement part 20 and a blur allowable section 21 which is disposed adjacently to the gasket body arrangement part 20; and a gasket 4 including a gasket body 40 which is disposed in the gasket body arrangement section 20. In the blur allowable section 21, the side close to the gasket body arrangement part 20 is defined as a proximate side, and the side far from the gasket body arrangement part 20 is defined as a separate side. The blur allowable section 21 includes a first groove part 210 which is recessed in a proximate side end 21a and a second groove part 211 which is recessed in a separate side end 21b.SELECTED DRAWING: Figure 3

The invention relates to the field of membrane electrodes, and discloses a packaging method and a packaging structure of a single-frame membrane electrode, a frame substrate is respectively connected with a first sealing element and a second sealing element to form a first assembly, the first assembly is connected with a first gas diffusion layer to form a second assembly, and a catalyst coating CCM is connected with a second gas diffusion layer to form a single-frame membrane electrode. And assembling and aligning the second assembly and the third assembly through a mold, and carrying out hot pressing to form the single-frame membrane electrode with the sealing element. The fuel cell stack has the beneficial effects that the sealing element for stack assembly and the membrane electrode are assembled together in advance, so that the assembly process of the rear-end fuel cell stack is greatly simplified, the assembly precision is high, the sealing element and the frame have good adhesion and are not easy to move, the reworking condition caused by irregular alignment of the sealing element in the stack assembly process is avoided, and the production efficiency is improved. The assembly efficiency and the yield of the electric pile are improved, and the cost is reduced.

A multilayer sheet comprises a base material layer, a primer layer disposed on at least one surface side of the base material layer, and an adhesive layer in this order. The base material layer contains a polymer having a structural unit including at least one structure selected from the group consisting of an imide structure, a sulfone structure, an amide structure, and a sulfide structure. The primer layer contains an acid-modified polyolefin.

The invention relates to the technical field of fuel cells, and particularly discloses a pole plate and adhesive film ring laminating device which comprises a workbench, a conveying mechanism, a cutting mechanism, a waste discharge mechanism and a laminating mechanism, and the workbench comprises a cutting workbench, a waste discharge workbench and a laminating workbench which are sequentially arranged in the first horizontal direction; the conveying mechanism is used for conveying the bottom supporting film in the first horizontal direction and enabling the adhesive film belt to sequentially slide through the cutting workbench, the waste discharging workbench and the attaching workbench. The cutting mechanism is used for cutting the adhesive film on the cutting workbench so as to obtain an adhesive film ring; the waste discharging mechanism is used for removing inner side adhesive film waste on the inner side of the adhesive film ring on the waste discharging workbench; and the laminating mechanism is used for laminating the polar plate with the adhesive film ring on the laminating worktable. When the adhesive film belt is cut, after the adhesive film is cut through, the cutting depth of the bottom supporting film is smaller than the thickness of the bottom supporting film, so that the strength of the bottom supporting film is reserved, the strength and rigidity of the adhesive film ring are improved in the transfer process of bearing the adhesive film ring, and the problems of warping and wrinkling of the adhesive film ring are effectively solved.

The present invention relates to a high-strength and stable sealing material for solid oxide fuel cells and its application. The high-strength and stable sealing material for solid oxide fuel cells includes: glass powder modified by surface polysilazane and ceramic powder modified by surface polysilazane; the content of the ceramic powder modified by surface polysilazane is 5-30 wt%; the content of the glass powder modified by surface polysilazane is ≥70 wt%.

To obtain a copolymer which has a high crosslinking rate and excellent productivity and can form a molded product with thermal aging resistance, small compression set at high and low temperatures, and improved low-temperature characteristics (low-temperature elastic recovery characteristics and Gehman torsion characteristics), a composition containing the copolymer, and the like.SOLUTION: An ethylene / α-olefin / nonconjugated polyene copolymer (A) has a structural unit derived from ethylene [A1], a structural unit derived from a C4-20 α-olefin [A2], and a structural unit derived from a nonconjugated polyene [A3] having two or more partial structures selected from the group consisting of the following general formulae (I) and (II) in total in one molecule and satisfies specific requirements. The structural unit derived from the [A2] contains a structural unit derived from 1-butene, and the structural unit derived from the [A3] contains a structural unit derived from 5-vinyl-2-norbornene.SELECTED DRAWING: None

This biaxially oriented polyarylene sulfide film contains a polyarylene sulfide resin as a main constituent component. The biaxially oriented polyarylene sulfide film has a thickness variation in the film width direction of 0.5% to 10.0% inclusive in a width of 300 mm around the central part in the width direction of the film, an orientation angle from the film longitudinal direction of more than -35° but less than 35°, not less than -90° but less than -55°, or more than 55° but not more than 90°, and a difference between the maximum value and the minimum value of the orientation angle of 0.5° to 20.0° inclusive. The present invention provides a biaxially oriented polyarylene sulfide film which is capable of suppressing warpage at the time of processing, and is excellent in terms of pressure uniformity when a large number of the biaxially oriented polyarylene sulfide films are stacked and pressurized.

An embodiment unitized fuel cell includes a cell frame including an electricity generating assembly (EGA) bonded to a frame, the cell frame including a manifold hole disposed at an end part of the frame and a reaction gas guide part extending from the manifold hole, wherein the manifold hole is configured to allow a reaction gas to pass therethrough, and a pair of bipolar plates respectively laminated on both sides of the cell frame, the pair of bipolar plates including a first bipolar plate configured to form a flow path of the reaction gas together with the reaction gas guide part of the cell frame, the first bipolar plate having a recessed hole disposed on a part corresponding to the reaction gas guide part to expose a part of the reaction gas guide part therethrough and a second bipolar plate bonded to the cell frame.

The present invention relates to a bipolar plate for an electrochemical system, comprising a separator plate and a support element. The present invention further relates to an arrangement for an electrochemical system with the bipolar plate. The present invention also relates to an electrochemical system comprising a plurality of stacked bipolar plates or a plurality of stacked arrangements.

A membrane electrode assembly (MEA) is described, comprising a membrane (4) made of a polymeric ion-conducting material arranged between two electrodes, and a flat sealing element (5) extending around the outer peripheral edge and embedded in the membrane (4) at least in one edge region. The sealing element (5) is configured such that it is anchored in the membrane (4) by means of a positive fit. Furthermore, a method for producing such an MEA (10) is described.

A method of sintering an electrochemical cell stack includes placing the electrochemical cell stack in a cage which applies a first compressive load to the electrochemical cell stack, moving the cage containing the electrochemical cell stack in a moving direction through a furnace containing a sintering region, sintering the electrochemical cell stack in the sintering region of the furnace, and applying a second compressive load greater than the first compressive load to the electrochemical cell stack during the sintering.

A preparation method of an SOFC or SOEC with a long-life sealing interface is formed by allowing a sealing layer, a cell and a metal interconnector to be mutually contacted. In the present disclosure, with spinel as a coating material of the metal interconnector, staged thermal treatment is employed to form a high-density and strong-adhesion spinel coating to improve the endurance and entire performance of the metal interconnector. The present disclosure also optimizes the material system of the sealing layer, namely, uses the SiO2—MgO—Al2O3—SrO—V2O5 system to prepare the sealing layer, which not only improves the resistivity of the sealing layer but also increases its hardness and fracture strength. Further, under the condition of ensuring the airtightness, the coefficient of thermal expansion of the sealing layer is matched with the coefficients of thermal expansion of the metal interconnector and the cell, improving the endurance of the sealing interface.