432results about "Sealing/support means" patented technology

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).

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.

This hot-melt adhesive sheet is provided with a base material and an adhesive layer laminated on at least one surface of the base material, the adhesive layer being formed from a hot-melt adhesive, the hot-melt adhesive comprising a crosslinked product of an adhesive composition containing a crosslinking agent, the adhesive composition comprising a polyester resin, an epoxy resin, and an isocyanate crosslinking agent, the epoxy resin contains a bisphenol-type epoxy resin and a rubber-modified epoxy resin, and the bisphenol-type epoxy resin has an epoxy equivalent weight of 450 g / eq or more and 1000 g / eq or less.

The utility model provides a laminating device for membrane electrode packaging and a fuel cell production system, and belongs to the technical field of fuel cell manufacturing. The laminating device for membrane electrode packaging comprises a laminating assembly, a frame unwinding assembly and a driving assembly, the laminating assembly comprises a steel roller and a rubber roller which are oppositely distributed, and a gap for a membrane material to pass through is formed between the steel roller and the rubber roller; the frame unwinding assembly is located on the upstream of the steel roller and used for conveying the frame to the gap through the steel roller to be attached to the base material. The driving assembly is in driving connection with the laminating assembly, so that the steel roller and the rubber roller can be close to each other or far away from each other, and the laminating device for membrane electrode packaging can effectively solve the problems that the flatness is poor and bubbles exist after the frame and the membrane electrode are laminated.

To provide a method for manufacturing a member with rubber capable of suppressing generation of burrs of a rubber member, an adhesive sheet, and a member with rubber, in order to solve the problem of the need for a process for removing burrs.SOLUTION: A method for manufacturing a member with rubber comprises a step (S12) of contacting an adhesive sheet having a concave structure on a first surface with an uncrosslinked rubber member, and contacting the adhesive sheet on a second surface of the adhesive sheet with a substrate, and a step (S13) of heating the rubber member to bond the substrate and the rubber member.SELECTED DRAWING: Figure 1

The invention relates to: a method for joining electrically conductive plastic parts; joined plastic parts; and an apparatus for carrying out said method.

The application relates to the technical field, in particular to a method for bonding a bipolar plate and a membrane electrode assembly and a proton exchange membrane fuel cell, which comprises the following steps: a bipolar plate, which is provided with a plurality of glue line grooves and a plurality of first through holes, is bonded with a membrane electrode assembly which comprises a membrane electrode body and a frame, the bipolar plate and the membrane electrode assembly, which are coated with glue on the upper surfaces, are sequentially adhered to a first mold through an installation piece, so that the upper surface of the bipolar plate is adhered to the lower surface of the membrane electrode assembly, and a positioning piece fixes three edges of the bipolar plate and the membrane electrode assembly; a second mold is adhered to the membrane electrode assembly to obtain a bonding unit; the bonding unit is placed into a hot pressing device for hot pressing; after the hot pressing is completed, the first and second molds are removed to obtain the bipolar plate and the membrane electrode assembly which are firmly bonded; the method can realize the close bonding of the bipolar plate and the membrane electrode assembly, the two will not be deviated during the bonding and transportation, and the internal gas and liquid can be effectively prevented from leaking.

Systems and methods of the various embodiments may provide bifacial sealed gas diffusion electrode (GDE) assemblies. In some embodiments, a bifacial sealed gas diffusion electrode (GDE) assembly includes active electrode layers on two opposing sides of the assembly. Various embodiments may provide architecture and / or sealing methods for GDE assemblies. In various embodiments, the GDE assemblies may be for use in devices. In various embodiments, the devices may be primary or secondary batteries. In various embodiments, these devices may be useful for energy storage. For example, bifacial sealed GDE assemblies of the various embodiments may form cathode electrodes (sometimes called air electrodes) of a battery, such as a metal-air battery.

The application belongs to the technical field of liquid flow battery energy storage, and particularly relates to a full-vanadium liquid flow battery electrode frame structure which comprises an electrode frame, the electrode frame is a rectangular flat plate structure, through holes are arranged at edges close to four corners of the electrode frame, the four through holes are respectively used as electrolyte inlet and outlet through holes, a hollow rectangular middle through hole capable of accommodating a porous electrode is arranged at the middle of the rectangular flat plate of the electrode frame, electrolyte inlet and outlet main flow channels are arranged on one side surface of the electrode frame, and the electrolyte inlet and outlet main flow channels are close to the upper and lower edges of the electrode frame. In the application, PVC (polyvinyl chloride) is selected as the material of the electrode frame, the electrode frame is easy to process, electrolyte inlet and outlet auxiliary flow channels are distributed on the other two edges of the electrode frame, the electrolyte inlet and outlet auxiliary flow channels are respectively arranged in a serpentine manner on the electrode frame, the flow path of the electrolyte is greatly increased, and the flow resistance in the battery is increased.

The present invention provides a solid polymer fuel cell sealing material which is excellent in hot water resistance and acid resistance, and in which sealing properties do not decrease even if a solid polymer fuel cell is driven for a long time. This solid polymer fuel cell sealing material comprises a carboxyl group-containing acrylonitrile‐butadiene copolymer (a) and an epoxy resin (b). It is preferable that the component (a) is a carboxy-containing acrylonitrile‐butadiene copolymer having an acrylonitrile content of 5-50% and having a carboxyl group equivalent, calculated from the number average molecular weight, of 100-20,000.

The invention relates to a method for processing and joining bipolar plates (10) which are provided with sealing seams (56) for sealing between an active area (14) and media ports (18, 20, 22, 24, 26). At least the following process steps are carried out: In process step a), a warped bipolar plate (10, 54) is provided in a processing and joining station (28); in process step b), processing tools (34, 38) and joining tools (31) are positioned against the warped bipolar plate (10, 54) such that the joining tools (31) exert a holding and joining force (64) on the warped bipolar plate (10, 54). According to process step c), the machining tools (34, 38) contact the distorted bipolar plate (10, 54) and produce a plastic deformation (68) of the distorted bipolar plate (10, 54) by means of a straightening force (62).Subsequently, in process step d), a material-bonded electrical contact (82) is created on one side of the previously straightened bipolar plate (10, 84). Following process step e), the processing and joining station (28) is opened (78, 80) and the joined and straightened bipolar plate (10, 84) is removed.

The utility model relates to the technical field of fuel cell bipolar plate preparation, and provides a forming device and a fuel cell bipolar plate sealing structure forming system. The forming device disclosed by the utility model is used for forming the sealing rubber strip on the bipolar plate for the fuel cell, and comprises a rubber injection machine, a cold runner module and a forming mold which are connected in sequence, wherein a rubber runner and a cooling liquid channel for cooling the cold runner module are arranged in the cold runner module, one end of the rubber runner is connected with a rubber injection machine, the other end of the rubber runner is connected with an injection nozzle, and the cooling liquid channel is connected with a mold temperature controller; the forming mold can define a cavity for forming the sealing rubber strip together with the bipolar plate during mold closing, and the cavity is communicated with the injection nozzle. According to the utility model, the glue material can be prevented from being solidified in the runner, the continuous injection operation can be realized, and the production efficiency can be improved.

This invention provides a technology for forming an adhesive layer with high precision at a specific location on a separator. [Solution] A method for manufacturing a fuel cell cell comprises the steps of cooling a separator for a fuel cell and applying an adhesive to the cooled separator to form an adhesive layer on the surface of the separator.

An embodiment separator for a fuel cell includes a separator body having a plate shape and including a metal material on which a plurality of manifolds is provided to introduce or discharge reaction gas or cooling water and a molding gasket surrounding an inner edge of at least one manifold selected from among the plurality of manifolds provided on the separator body, the molding gasket being configured to prevent corrosion.

The invention relates to a device (1) for the dielectric insulation of an object (50), in particular a hydrogen fuel cell stack, comprising a metal strip (10) for fixing the object (50), and a plurality of insulating blocks (20) arranged between the metal strip (10) and a surface of the fixed object (50) and attached at selected locations on the metal strip (10). According to the invention, the insulating blocks (20) are arranged on the metal strip (10) such that they ensure dielectric resistance only at critical surface areas of the fixed object (50). The insulating blocks (20) can be attached to the metal strip (10) by snapping or clipping them in, thus enabling easy adaptation to different design requirements and cost-effective production.

The invention discloses an electric pile assembly method of a low-temperature flow battery, the process comprises the steps of stacking and dispensing, curing, locking, electric pile air tightness testing, and finally forming a complete flow battery, and the electric pile assembled by the process has good low-temperature air tightness. According to the invention, the effect of enhancing the low-temperature air tightness is achieved for the galvanic pile assembled by the flow battery with any structure, the loss of the air tightness of the galvanic pile assembled at room temperature during cooling can be avoided, and the leakage of the galvanic pile of the flow battery in a low-temperature environment is avoided. Through actual tests, the flow battery assembled at room temperature by using the assembly process can stably operate at-40 DEG C.

An electrochemical cell (100) for an electrochemical energy converter (300) wherein the cell (100) comprises:-a first gas diffusion layer (101),-a first electrode (103),-a second electrode (105),-a membrane (107) arranged between the first electrode (103) and the second electrode (105),-a second gas diffusion layer (109),-a first seal (111), and-a second seal (113), the first sealing part (111) is at least partially arranged between the first gas diffusion layer (101) and the first electrode (103), the second sealing part (113) is at least partially arranged between the second gas diffusion layer (109) and the second electrode (105), and the first sealing part (111) has an end region (115) which extends in an obliquely narrowing manner in the direction of the first electrode (103), the second seal section (113) has an end region (117) extending so as to be inclined and narrowed in the direction of the second electrode (105).

To provide a fuel battery cell.SOLUTION: The invention includes: a membrane electrode assembly (MEA); a separation plate laminated on one surface of the membrane electrode assembly; a beading portion which is provided protruding on one surface of the separation plate facing the membrane electrode assembly; and a sealing member which is provided between the membrane electrode assembly and the beading portion and seals a space between the membrane electrode assembly and the separation plate. The structure can attain advantageous effects such as securing rigidity and improvement of safety and reliability.SELECTED DRAWING: Figure 1

The application discloses a sealing structure, a fuel cell and a manufacturing method of the sealing structure. The sealing structure comprises a sealing part, a channel part and at least two cavities. The sealing part is used for surrounding a sealing loop. The channel part is connected with the sealing part and is used for at least partially connecting the adjacent two cavities. The channel part comprises at least one supporting part and at least one connecting part. The supporting part is fixedly connected with the connecting part. In the embodiment, the supporting part of the channel part is connected with the sealing part through the connecting part, so that the sealing structure is an integral whole. When the sealing structure is prepared, the sealing structure can be formed only once, the workload of preparing the sealing structure is simplified, and the preparation efficiency of the sealing structure is improved.

This invention relates to a production apparatus (1) for manufacturing membrane electrode assemblies or equipment frames, having multiple workstations (10, 11, 12, 13, 20) in which successive manufacturing steps are performed. The production apparatus according to the invention is characterized by having a main line (H) and at least one secondary line (N1, N2), the at least one secondary line (N1, N2) branching off from the main line (H) after a central workstation (20) and rejoining the main line (H) after at least one separate workstation (11, 12) in the respective secondary line (N1, N2) and before the central workstation (20). The central workstation (20) includes at least one working section (21) for applying adhesive, and at least some of the separate workstations (10, 11, 12, 13) are configured for bonding and / or positioning additional materials and / or layers (3, 5, 6, 7). The invention also includes a method for manufacturing membrane electrode assemblies or equipment frames using such production apparatus (1).

This electrochemical cell comprises: a metal member; an element part located on the metal member; and a sealing part containing a seal material. The element part has a first surface facing the metal member, a second surface located opposite the first surface, and a side surface connecting the first surface and the second surface. The sealing part has a first portion located outside the contour of the element part in plan view, and a second portion in contact with the side surface. The element part includes a seal material and has a mixing part in contact with the second portion. The mixing part has a thickness of less than 1 μm.

The present disclosure relates to a seal for a water electrolysis stack or a fuel cell, wherein the seal comprises a base body made of a first material and a protective membrane covering the outer surface of the base body, the protective membrane being made of a second material, the second material being different from the first material and having a lower gas permeability than the first material. The present invention further relates to a water electrolysis stack with at least one such seal and to a fuel cell with at least one such seal.

To provide a fuel cell capable of suppressing the occurrence of damage to a membrane electrode junction and a gas diffusion layer even if a cover sheet is arranged upon bonding a support to the membrane electrode junction.SOLUTION: A fuel cell includes a membrane electrode junction including a first catalyst layer, a second catalyst layer, and an electrolyte membrane, a first gas diffusion layer, a second gas diffusion layer, a support arranged around the membrane electrode junction, and a cover sheet arranged to bridge between the support and at least one of the electrolyte membrane and the first catalyst layer. A space having a distance LA (mm) is formed between an end surface of the support and an end surface of the membrane electrode junction. When the elastic modulus of the cover sheet is denoted as E (MPa) and the thickness is denoted as t (mm), E>0.048×LA4 / t3 is satisfied. In the first gas diffusion layer, a reduction ratio of a gap in at least a portion of an area in which a cover sheet is arranged to a gap in an area in which no cover sheet is arranged is 5% or more and 25% or less.SELECTED DRAWING: Figure 3

The application provides a fuel cell sealing structure and a preparation method thereof, which comprises a carbon plate, a gasket, carbon paper, a CCM and a limiting element, a plurality of limiting holes are formed in the gasket, and the limiting element is arranged in any limiting hole; the carbon paper is arranged at the middle part of the gasket, the upper and lower sides of the CCM are both provided with the carbon paper and the gasket, any gasket is provided with the carbon plate away from the CCM, and any limiting element extends into the carbon plate. The method for sealing by using the soft rubber gasket has weak adhesion with the surface of the CCM, is beneficial to the flattening and positioning of the CCM, can not be limited by the thickness of the gasket, can control the compression amount of the carbon paper at will, and significantly improves the sealing property of the battery; by using the limiting element, the compression amount of the carbon paper can be limited during the fastening process, and the battery performance is ensured.

To provide a method of manufacturing an interconnect for an electrochemical battery stack, an interconnect for an electrochemical battery stack, and an electrochemical battery stack.SOLUTION: A method of manufacturing an interconnect includes the following steps of: providing an interconnect; and flattening creep of the interconnect before the interconnect is arranged in an electrochemical battery stack.SELECTED DRAWING: Figure 7

The application relates to a forced air hydrogen fuel cell system which comprises a fastener, an air equalizing cover, a core assembly, a first end plate assembly and a second end plate assembly; the first end plate assembly is arranged on the end face of one end of the core assembly, the second end plate assembly is arranged on the end face of the other end of the core assembly; the core assembly is sleeved outside the air equalizing cover; one end of the air equalizing cover is arranged at the geometric center of the second end plate assembly, the other end of the air equalizing cover is in contact with the first end plate assembly; the first end plate assembly is connected with the second end plate assembly through the fastener, and the fastener is arranged outside the core assembly. The application has the advantages of compact structure, large volume power density, small anode flow channel flow resistance, small pressure drop of inlet and outlet air, uniform cathode end air inlet, good sealing effect of the sealed groove used in the anode, good current collecting plate conductivity and corrosion resistance, and the like, and can meet the practical use requirements.