CN110311152B - Sealing method - Google Patents
Sealing method Download PDFInfo
- Publication number
- CN110311152B CN110311152B CN201910604351.6A CN201910604351A CN110311152B CN 110311152 B CN110311152 B CN 110311152B CN 201910604351 A CN201910604351 A CN 201910604351A CN 110311152 B CN110311152 B CN 110311152B
- Authority
- CN
- China
- Prior art keywords
- sealing
- sealing element
- sealed
- vacuum
- layer structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 210
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000001179 sorption measurement Methods 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 79
- 239000012528 membrane Substances 0.000 claims description 40
- 239000003054 catalyst Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000002699 waste material Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 20
- -1 polyethylene terephthalate Polymers 0.000 claims description 17
- 239000004831 Hot glue Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 16
- 239000000446 fuel Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0286—Processes for forming seals
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- 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)
- Gasket Seals (AREA)
Abstract
The invention discloses a sealing method, which comprises the following steps: providing a first seal and a second seal, providing a sealed member; sequentially stacking and positioning the first sealing element, the sealed element and the second sealing element in a vacuum platform in a direction far away from the vacuum platform through vacuum action to form a three-layer structure with an interior in a vacuum state and no air bubbles, wherein the sealed element is positioned in a central area of the first sealing element, an area of an adsorption area of the vacuum platform is larger than or equal to that of the second sealing element, and an area of the second sealing element is larger than that of the first sealing element; and enabling the first sealing element and the second sealing element to seal the sealed element. By the mode, the invention can be sealed without bubbles, has good sealing quality and high product yield, and provides a technical basis for automatic production.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a sealing method.
Background
A fuel cell is an electrochemical cell whose main principle is to convert chemical energy in a fuel and an oxidant directly into electrical energy through an oxidation-reduction reaction. Proton Exchange Membrane Fuel cells (PEMFCs, Proton Exchange Membrane Fuel cells) are an important branch of the Fuel Cell field, and besides having general characteristics of Fuel cells such as high energy conversion efficiency and environmental friendliness, they also have the outstanding advantages of fast starting speed at room temperature, small volume, no electrolyte loss, easy water discharge, long service life, high specific power and specific energy, and the like. Therefore, the proton exchange membrane fuel cell has very wide application prospect.
A Membrane Electrode Assembly (MEA) is a core component of a proton exchange Membrane fuel cell, and generally consists of five parts: a middle proton exchange membrane, cathode/anode catalyst layers on both sides, and an outermost cathode/anode gas diffusion layer. When the cell works, fuel gas (such as hydrogen) and oxidant (such as air or oxygen) respectively enter electrode reaction areas on two sides of the membrane through flow fields on the polar plates, and in order to avoid gas leakage or mutual series of the fuel gas and the oxidant, a sealing frame is needed for separating a cathode electrode and an anode electrode and preventing mutual series of the cathode gas and the anode gas.
However, the inventor of the present application finds that, in a long-term research and development process, bubbles are easily mixed in the existing sealing process, so that the frame sealing effect is poor, the yield is low, the production efficiency is low, and the frame sealing process is not suitable for automatic production.
Disclosure of Invention
The invention mainly solves the technical problem of providing a sealing method, which can simply seal without bubbles, has good sealing quality and high product yield and provides a technical basis for automatic production.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a sealing method comprising: providing a first seal and a second seal, providing a sealed member; sequentially stacking and positioning the first sealing element, the sealed element and the second sealing element in a vacuum platform in a direction far away from the vacuum platform through vacuum action to form a three-layer structure with an interior in a vacuum state and no air bubbles, wherein the sealed element is positioned in a central area of the first sealing element, an area of an adsorption area of the vacuum platform is larger than or equal to that of the second sealing element, and an area of the second sealing element is larger than that of the first sealing element; sealing the sealed member with the first and second sealing members; the step of forming a three-layer structure with a vacuum state inside and no air bubbles by sequentially stacking and positioning the first sealing element, the sealed element and the second sealing element on a vacuum platform in a direction away from the vacuum platform through vacuum action comprises: positioning and placing the first sealing element on the vacuum platform in a mode that the base material faces downwards and the glue faces upwards, and adsorbing the first sealing element through vacuum; positioning the sealed piece on the central area of the first sealed piece, and sucking the sealed piece by vacuum; and positioning and placing the second sealing element on the first sealing element and the sealed element which are adsorbed in a mode that the base material faces upwards and the glue faces downwards, and adsorbing the second sealing element through vacuum to form a three-layer structure with the interior in a vacuum state and without air bubbles.
Wherein the non-sealing waste region of the first seal is provided with a plurality of holes; a plurality of apertures are evenly distributed in the non-sealing waste region of the first seal.
The periphery of the non-sealing waste material area of the first sealing element is cut into a plurality of areas, and the total area of the cut areas is smaller than the area of the non-sealing waste material area of the first sealing element.
Wherein the central regions of the first and second seals each comprise a hollow region.
Wherein the sealed member is a catalyst coated membrane.
Wherein said causing the first and second seals to seal against the sealed piece comprises: and sealing the sealed piece by the first sealing piece and the second sealing piece through a heat treatment mode.
The first sealing element and the second sealing element are both composed of a base material and hot melt adhesive arranged on the base material.
Wherein the sealing the sealed member by the first sealing member and the second sealing member by the heat treatment method includes: and enabling the hot roller press to compress the three-layer structure at a preset pressure and a second preset temperature T2, so that the first sealing element and the second sealing element seal the sealed element.
Wherein, before the causing the hot roller compactor to compact the three-layer structure at a predetermined pressure and a second predetermined temperature T2, comprises: and transferring the three-layer structure to a heating device, and pre-bonding the three-layer structure at a first preset temperature T1 to form an integral three-layer structure, wherein the T1 is not more than the T2.
Wherein, the heating mode of the heating device is one of infrared heating, tunnel heating or hot-pressing heating.
Wherein the base material is one of polyethylene glycol terephthalate, polypropylene, polyethylene protective layer, polyvinyl chloride, polycarbonate, polyththalimide, polytetrafluoroethylene, polyththalamide or polyvinyl alcohol, and the thickness range of the base material is 5-100 um; the hot melt adhesive is at least one of vinyl ethyl acetate, polyamide, polyolefin and polyester, and the thickness of the hot melt adhesive ranges from 5um to 100 um.
Wherein the method further comprises: and cutting the sealed three-layer structure to remove non-sealing waste areas of the first sealing element and the second sealing element.
Wherein the vacuum suction table is a processing plate with a plurality of holes smaller than 0.2mm, or is prepared from a material with air permeability larger than 50%.
The invention has the beneficial effects that: different from the situation of the prior art, the sealing method of the invention is characterized in that a first sealing element (positioned at the lower layer), a sealed element (positioned at the middle layer) and a second sealing element (positioned at the upper layer) are sequentially stacked and positioned at the vacuum platform in the direction far away from the vacuum platform, and as the area of the adsorption area of the vacuum platform is larger than or equal to that of the second sealing element and the area of the second sealing element is larger than that of the first sealing element, the second sealing element at the upper layer can be adsorbed by the first sealing element at the lower layer under the vacuum action, so that the interiors of the stacked first sealing element, the stacked sealed element and the second sealing element are in a vacuum state without bubbles, and thus, after sealing, the sealing quality is good, the phenomena such as wrinkles and the like do not exist, and the; and the mode of removing bubbles is simple to operate, and provides a technical basis for automatic production.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic flow chart of one embodiment of the sealing method of the present invention;
FIG. 2 is a schematic flow chart of another embodiment of the sealing method of the present invention;
FIG. 3 is a schematic flow chart of a further embodiment of the sealing method of the present invention;
FIG. 4 is a schematic flow chart of another embodiment of the sealing method of the present invention;
FIG. 5 is an exploded view of a lower first seal frame installation hole;
FIG. 6 is a schematic view of a sealing process for forming a hole in the lower first sealing frame;
fig. 7 is an exploded view of the periphery of the non-sealing waste area of the lower first sealing frame cut in a plurality of areas;
fig. 8 is a schematic view of a sealing process flow in which the periphery of the non-sealing waste area of the lower first sealing frame is cut into a plurality of areas.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of the sealing method of the present invention, which includes:
step S101: providing a first seal and a second seal, providing a sealed member.
In this embodiment, the materials and shapes of the first sealing member, the second sealing member, and the sealed member are not limited.
Step S102: the vacuum platform is sequentially stacked and positioned in the direction away from the vacuum platform through vacuum action, the first sealing element, the sealed element and the second sealing element are arranged to form a three-layer structure, the interior of the three-layer structure is in a vacuum state and free of air bubbles, the sealed element is located in the center area of the first sealing element, the area of the adsorption area of the vacuum platform is larger than or equal to that of the second sealing element, and the area of the second sealing element is larger than that of the first sealing element.
Step S103: the first sealing element and the second sealing element are used for sealing the sealed element.
In this embodiment, the sealing method is not limited, and any existing sealing method may be adopted.
According to the embodiment of the invention, the first sealing element (positioned at the lower layer), the sealed element (positioned at the middle layer) and the second sealing element (positioned at the upper layer) are sequentially stacked and positioned at the vacuum platform in the direction far away from the vacuum platform, and as the area of the adsorption area of the vacuum platform is larger than or equal to that of the second sealing element and the area of the second sealing element is larger than that of the first sealing element, the second sealing element at the upper layer can be adsorbed by the first sealing element at the lower layer under the action of vacuum, so that the interiors of the stacked first sealing element, the stacked sealed element and the second sealing element are in a vacuum state and have no air bubbles, and thus after sealing, the sealing quality is good, no bad phenomena such as wrinkles and the like exist, and the product yield; and the mode of removing bubbles is simple to operate, and provides a technical basis for automatic production.
The area of the second sealing element is larger than that of the first sealing element, and the specific implementation mode can be various, for example, in one embodiment, a plurality of holes are arranged in the non-sealing waste material area of the lower layer of the first sealing element; the plurality of holes are evenly distributed in the non-sealing waste area of the first sealing member. Non-sealing waste areas are areas that are not within the sealing range and that can be removed. In one useful application, the sealed member is a catalyst-coated membrane CCM; the central regions of the first and second seals each comprise a hollow region, and the non-seal waste region is provided with a hole having a hole diameter not larger than the membrane electrode manifold hole. The vacuum effect can absorb the second sealing element on the upper layer through the holes of the first sealing element on the lower layer, so that the three-layer structure is flattened, the interior of the three-layer structure is in a vacuum state, and no air bubbles exist; and the speed of removing bubbles is fast, and the production efficiency can be improved.
In another embodiment, the periphery of the non-seal scrap region of the first seal member is cut a plurality of areas, the total area of the cuts being less than the area of the non-seal scrap region of the first seal member. The area of the second sealing element on the upper layer is larger than that of the first sealing element on the lower layer, so that the periphery of the second sealing element on the upper layer can be directly contacted with the vacuum platform, the vacuum platform adsorbs the second sealing element on the upper layer under the vacuum effect, the three-layer structure is flattened, and the interior of the three-layer structure is in a vacuum state and is free of bubbles.
Wherein, the sealing manner is sealing by a heat treatment manner, that is, step S103 may specifically be: and sealing the sealed piece by the first sealing piece and the second sealing piece through a heat treatment mode.
Specifically, the first sealing element and the second sealing element are both composed of a base material and a hot melt adhesive arranged on the base material; the hot melt adhesive can be melted and bonded under heating to realize sealing.
Wherein the substrate is one of polyethylene terephthalate, polypropylene, polyethylene protective layer, polyvinyl chloride, polycarbonate, polyththalimide, polytetrafluoroethylene, polyththalamide or polyvinyl alcohol, and the thickness of the substrate is in the range of 5-100 micrometers (um), for example: 5um, 30um, 60um, 100um, etc.; the hot melt adhesive is at least one of vinyl ethyl acetate, polyamide, polyolefin and polyester, and the thickness of the hot melt adhesive is in a range of 5-100um, for example: 5um, 30um, 60um, 100um, etc.
Wherein the vacuum suction table is a processing plate with a plurality of holes smaller than 0.2mm, or is prepared by a material with air permeability larger than 50%.
Wherein the sealed member is a catalyst-coated membrane; the central regions of the first and second seals each comprise a hollow region. That is, the first and second sealing members seal the catalyst coated membrane, and the hollow areas of the first and second sealing members can expose the effective area of the catalyst coated membrane.
Catalyst Coated membranes, also known as Catalyst Coated Membranes (CCM) or fuel cell chips, are prepared by coating fuel cell catalysts on both sides of a proton exchange MembraneThe obtained catalyst/proton exchange membrane component is the most core component of the proton exchange membrane fuel cell and is of great importance to reducing the production cost, improving the specific power and accelerating the commercialization process. Compared to a conventional Membrane Electrode Assembly (MEA) prepared by coating a catalyst on the surface of a gas diffusion layer (i.e., carbon paper or carbon cloth), the CCM has the following advantages: 1) the catalyst layer is ultra-thin, the catalytic efficiency of the catalyst is greatly improved, and the loading capacity of the Pt noble metal catalyst is reduced (generally reduced to 0.4-0.6 mg/cm)2The following); 2) the proton exchange membrane can be ultra-thin, the surface conductance of the membrane is improved, and the dosage of the membrane is also reduced; 3) short activation time of the battery, quick electrochemical response and the like.
In the embodiment of the invention, the catalyst coated membrane is sealed by the first sealing member and the second sealing member to obtain the final sealed catalyst coated membrane, the area of the sealed catalyst coated membrane is enlarged compared with that of the catalyst coated membrane, the cost of the first sealing member and the cost of the second sealing member are much lower than that of the catalyst coated membrane, when the fuel cell is assembled subsequently, the whole catalyst coated membrane (with high cost) is not required to be packaged into the membrane electrode, the first sealing member, the second sealing member and a part of an overlapped area (with much lower cost) can be packaged into the membrane electrode, and by the way, the production cost can be greatly reduced; in addition, the sealed catalyst coating membrane has a simple structure, can provide a possible technical basis for realizing the continuous production process of the catalyst coating membrane, and further can provide technical support for the continuous production process of the whole membrane electrode; if a roll-to-roll method is adopted, the production speed can be improved, and the product packaging quality can be improved by adopting a rolling mode.
Further, referring to fig. 2, step S102 may specifically include: substep S1021, substep S1022, and substep S1023.
Substep S1021: the first sealing element is positioned and placed on the vacuum platform in a mode that the base material face is downward and the glue face is upward, and the first sealing element is adsorbed through vacuum.
Substep S1022: and positioning the sealed piece on the central area of the first sealed piece, and sucking the sealed piece by vacuum.
Substep S1023: and positioning and placing a second sealing element on the first sealing element and the sealed element which are adsorbed in a mode that the base material faces upwards and the glue faces downwards, and adsorbing the second sealing element through vacuum to form a three-layer structure with the interior in a vacuum state and no air bubbles.
By the mode, the first sealing element, the sealed element and the second sealing element can be accurately positioned, and bubbles can be removed; in order to accelerate the speed of removing bubbles, a plurality of holes can be uniformly arranged on the non-sealing waste area of the first sealing element, or a plurality of areas can be cut around the non-sealing waste area of the first sealing element.
In step S103, specifically, the following may be performed: the heated roller presses the three-layer structure at a predetermined pressure and a second predetermined temperature T2, thereby causing the first and second seals to seal against the sealed member.
Compared with the surface-surface hot pressing, the glue layer is melted again by adopting a hot rolling mode, and the frame is sealed under a pressure state, so that the characteristic of good sealing effect on the periphery of the sealed piece can be realized.
Further, referring to fig. 3, before step S103, even before the hot roller press compacts the three-layer structure at a predetermined pressure and a second predetermined temperature T2, it may further include:
step S104: transferring the three-layer structure to a heating device, and pre-bonding the three-layer structure at a first preset temperature T1 to form an integral three-layer structure, wherein T1 is not more than T2; wherein, the heating mode of the heating device is one of infrared heating, tunnel heating or hot-pressing heating.
The three-layer structure is pre-bonded under the non-pressure condition through preheating, so that the three-layer structure is kept in a bubble-free state, and subsequent transfer, hot rolling and other treatment are facilitated.
Of course, in practical application, the preheating stage may also be directly laminated with the three-layer structure by a hot rolling method, and may be specifically determined according to practical application conditions.
Referring to fig. 4, in an embodiment, after step S103, the method may further include:
step S105: and cutting the sealed three-layer structure to remove the non-sealing waste areas of the first sealing element and the second sealing element.
The steps may be increased or decreased according to the conditions and specific requirements of the practical application, and are not limited herein.
In a practical application, the first sealing element and the second sealing element are respectively a first sealing frame and a second sealing frame, the sealed element is a CCM, a plurality of holes are uniformly formed in a non-sealing waste material area of the first sealing frame on the lower layer, and the sealing process comprises the above complete steps, namely material stacking, flattening adsorption, heating pre-melting and roller pressing.
Referring to fig. 5 and 6, fig. 5 is an exploded view of the first sealing frame installation hole of the lower layer, and fig. 6 is a schematic view of a sealing process flow of the first sealing frame installation hole of the lower layer.
a. The first sealed frame 3 of lower floor is positioned with the mode that the substrate face is down, the face of gluing is upwards and is placed on the adsorption zone of vacuum suction table 5, starts the vacuum pump, adsorbs the first sealed frame 3 of lower floor. The non-sealing waste area 7 of the first sealing rim 3 is uniformly provided with a plurality of holes.
b. The catalyst coated membrane 2 is positioned and placed in the central area of the lower first sealed frame 3, and the catalyst coated membrane 2 is adsorbed by vacuum.
c. The upper second sealing frame 1 is positioned and placed on the adsorbed lower first sealing frame 3 and the catalyst coating film 2 with the base material facing upward and the glue facing downward to form a three-layer structure 6. The three-layer structure 6 is flat and has a vacuum state inside and no bubbles.
d. The three-layer structure 6 thus adsorbed is transferred to a heating device, and the three-layer structure 6 is pre-bonded by raising the temperature to a suitable temperature T1, to form an integral three-layer structure 6.
e. The pre-bonded integrated three-layer structure 6 is transferred to a hot roller press and the three-layer structure 6 is pressed by a certain pressure and a certain temperature T2. The preheating temperature T1 is not greater than the hot pressing temperature T2.
f. And (3) attaching the rolled integrated three-layer structure 6 to a gas diffusion layer, and then placing the gas diffusion layer into a cutting machine for forming to obtain a formed membrane electrode 8.
In another practical application, the first sealing element and the second sealing element are respectively a first sealing frame and a second sealing frame, the sealed element is a CCM, a plurality of areas are cut around a non-sealing waste material area of the first sealing frame on the lower layer, the sealing process does not include a step of heating and pre-melting, and the step simply includes material stacking, flattening adsorption and roller pressing.
Referring to fig. 7 and 8, fig. 7 is an exploded view of the periphery of the non-sealing waste area of the lower first sealing frame being cut into a plurality of areas, and fig. 8 is a schematic view of the sealing process flow of the periphery of the non-sealing waste area of the lower first sealing frame being cut into a plurality of areas.
a. The first sealed frame 3 of lower floor is positioned with the mode that the substrate face is down, the face of gluing is upwards and is placed on the adsorption zone of vacuum suction table 5, starts the vacuum pump, adsorbs the first sealed frame 3 of lower floor. The periphery of the non-sealing waste region 7 of the first sealing rim 3 is cut into a plurality of areas.
b. The catalyst coated membrane 2 is positioned and placed in the central area of the lower first sealed frame 3, and the catalyst coated membrane 2 is adsorbed by vacuum.
c. The upper second sealing frame 1 is positioned and placed on the adsorbed lower first sealing frame 3 and the catalyst coating film 2 with the base material facing upward and the glue facing downward to form a three-layer structure 6. The three-layer structure 6 is flat and has a vacuum state inside and no bubbles.
d. The three-layer structure 6, the inside of which is under vacuum, is transferred to a hot roller press, and the three-layer structure 6 is compacted by a certain pressure and a certain temperature T2.
e. And (3) attaching the rolled integrated three-layer structure 6 to a gas diffusion layer, and then placing the gas diffusion layer into a cutting machine for forming to obtain a formed membrane electrode 8.
In general, the problem of air bubbles in the membrane electrode sealing process can be solved in a mode of forming vacuum in the three-layer structure; the three-layer structure is pre-bonded under a non-pressure condition through preheating, so that subsequent treatment is facilitated; compared with a surface-surface hot pressing method, the hot rolling method has the characteristic of good CCM peripheral sealing effect. By adopting the improved frame sealing process, the bad phenomena of bubbles, folds and the like of the frame of the product are improved, the operation is simple, and the improved frame sealing process has the advantages of high product yield, good sealing quality and suitability for automatic production.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A method of sealing, comprising:
providing a first seal and a second seal, providing a sealed member;
sequentially stacking and positioning the first sealing element, the sealed element and the second sealing element in a vacuum platform in a direction far away from the vacuum platform through vacuum action to form a three-layer structure with an interior in a vacuum state and no air bubbles, wherein the sealed element is positioned in a central area of the first sealing element, an area of an adsorption area of the vacuum platform is larger than or equal to that of the second sealing element, and an area of the second sealing element is larger than that of the first sealing element;
sealing the sealed member with the first and second sealing members;
the step of forming a three-layer structure with a vacuum state inside and no air bubbles by sequentially stacking and positioning the first sealing element, the sealed element and the second sealing element on a vacuum platform in a direction away from the vacuum platform through vacuum action comprises:
positioning and placing the first sealing element on the vacuum platform in a mode that the base material faces downwards and the glue faces upwards, and adsorbing the first sealing element through vacuum;
positioning the sealed piece on the central area of the first sealed piece, and sucking the sealed piece by vacuum;
and positioning and placing the second sealing element on the first sealing element and the sealed element which are adsorbed in a mode that the base material faces upwards and the glue faces downwards, and adsorbing the second sealing element through vacuum to form a three-layer structure with the interior in a vacuum state and without air bubbles.
2. The method of claim 1, wherein the non-sealing waste region of the first seal is provided with a plurality of holes; a plurality of apertures are evenly distributed in the non-sealing waste region of the first seal.
3. The method of claim 1, wherein the periphery of the non-seal scrap region of the first seal member is cut a plurality of areas, the total area cut being less than the area of the non-seal scrap region of the first seal member.
4. The method of claim 1, wherein the central regions of the first and second seals each comprise a hollow region.
5. The method of claim 1, wherein the sealed member is a catalyst coated membrane.
6. The method of claim 1, wherein said causing the first and second seals to seal against the sealed member comprises:
and sealing the sealed piece by the first sealing piece and the second sealing piece through a heat treatment mode.
7. The method of claim 6, wherein the first and second sealing members each comprise a substrate and a hot melt adhesive disposed on the substrate.
8. The method of claim 7, wherein said sealing the first and second seals against the sealed member by heat treating comprises:
and enabling the hot roller press to compress the three-layer structure at a preset pressure and a second preset temperature T2, so that the first sealing element and the second sealing element seal the sealed element.
9. The method according to claim 8, wherein before the causing the heated roller presses the three-layer structure at a predetermined pressure and a second predetermined temperature T2, comprises:
and transferring the three-layer structure to a heating device, and pre-bonding the three-layer structure at a first preset temperature T1 to form an integral three-layer structure, wherein the T1 is not more than the T2.
10. The method of claim 9, wherein the heating device is heated by one of infrared heating, tunnel heating, or hot press heating.
11. The method of claim 7, wherein the substrate is one of polyethylene terephthalate, polypropylene, polyethylene protective layer, polyvinyl chloride, polycarbonate, polythienimine, polytetrafluoroethylene, polythienamine, or polyvinyl alcohol, and has a thickness in the range of 5-100 um; the hot melt adhesive is at least one of vinyl ethyl acetate, polyamide, polyolefin and polyester, and the thickness of the hot melt adhesive ranges from 5um to 100 um.
12. The method of claim 1, further comprising:
and cutting the sealed three-layer structure to remove non-sealing waste areas of the first sealing element and the second sealing element.
13. The method of claim 1, wherein the vacuum table is a machined plate with holes smaller than 0.2mm or is made of a material with air permeability greater than 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604351.6A CN110311152B (en) | 2019-07-05 | 2019-07-05 | Sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604351.6A CN110311152B (en) | 2019-07-05 | 2019-07-05 | Sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110311152A CN110311152A (en) | 2019-10-08 |
| CN110311152B true CN110311152B (en) | 2020-11-20 |
Family
ID=68079175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910604351.6A Active CN110311152B (en) | 2019-07-05 | 2019-07-05 | Sealing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110311152B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808391A (en) * | 2019-10-21 | 2020-02-18 | 东莞市魔方新能源科技有限公司 | Preparation method of membrane electrode, membrane electrode and proton exchange membrane fuel cell |
| JP7315789B2 (en) * | 2019-11-06 | 2023-07-26 | コーロン インダストリーズ インク | Method and apparatus for the manufacture of membrane-electrode assemblies |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947091A (en) * | 2010-06-07 | 2013-02-27 | 旭硝子株式会社 | Method for manufacturing laminate |
| CN104617310A (en) * | 2015-02-13 | 2015-05-13 | 昆山桑莱特新能源科技有限公司 | Method for preparing fuel cell membrane electrode with sealing frame |
| CN106992305A (en) * | 2017-03-08 | 2017-07-28 | 同济大学 | A kind of fuel cell membrane electrode frame preparation method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08130019A (en) * | 1994-10-28 | 1996-05-21 | Tanaka Kikinzoku Kogyo Kk | Method for producing electrode for polymer solid electrolyte type electrochemical cell |
| CN103183201B (en) * | 2011-12-29 | 2016-01-13 | 富泰华工业（深圳）有限公司 | Adsorption plant |
| CN205810958U (en) * | 2016-06-03 | 2016-12-14 | 南京大学昆山创新研究院 | A kind of fuel cell membrane electrode hot pressing die |
| WO2017218731A1 (en) * | 2016-06-15 | 2017-12-21 | 3M Innovative Properties Company | Membrane electrode assembly component and method of making an assembly |
| CN206610868U (en) * | 2017-03-08 | 2017-11-03 | 同济大学 | A kind of device for preparing fuel cell membrane electrode frame |
| CN108461794B (en) * | 2018-01-29 | 2020-09-04 | 中国东方电气集团有限公司 | Proton membrane unit manufacturing device and proton membrane unit |
| CN108461773B (en) * | 2018-01-29 | 2020-09-04 | 中国东方电气集团有限公司 | Method for manufacturing proton membrane unit and proton membrane unit |
| CN109390610B (en) * | 2018-10-15 | 2021-05-25 | 南京大学昆山创新研究院 | Fuel cell membrane electrode production and packaging process |
| CN208819994U (en) * | 2018-10-26 | 2019-05-03 | 南京大学昆山创新研究院 | A kind of fixture for the preparation of fuel cell catalyst layer |
-
2019
- 2019-07-05 CN CN201910604351.6A patent/CN110311152B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947091A (en) * | 2010-06-07 | 2013-02-27 | 旭硝子株式会社 | Method for manufacturing laminate |
| CN104617310A (en) * | 2015-02-13 | 2015-05-13 | 昆山桑莱特新能源科技有限公司 | Method for preparing fuel cell membrane electrode with sealing frame |
| CN106992305A (en) * | 2017-03-08 | 2017-07-28 | 同济大学 | A kind of fuel cell membrane electrode frame preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110311152A (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109473683B (en) | Industrial mass production system and production method for fuel cell membrane electrode | |
| CN104617310B (en) | A kind of preparation method of the fuel cell membrane electrode of band sealed frame | |
| CN104756297B (en) | Membrane electrode assembly, there is the fuel cell of this component and have the automobile of this fuel cell | |
| CN207097957U (en) | A kind of encapsulation structure of fuel cell EMA assembly | |
| US20120135330A1 (en) | Membrane-Electrode Assembly with integrated sealing material | |
| CN111640964B (en) | Fuel cell and manufacturing method thereof | |
| CN110444790B (en) | Membrane electrode assembly, preparation method and fuel cell single cell | |
| JP2002500422A (en) | Continuous manufacturing method of laminated electrolyte and electrode assembly | |
| CN101632192A (en) | Membrane-membrane reinforcement member assembly, membrane-catalyst layer assembly, membrane-electrode assembly, polymer electrolyte fuel cell, and method for manufacturing membrane-electrode assembly | |
| CN110311151B (en) | Method for producing sealed catalyst-coated membranes | |
| WO2008017251A9 (en) | Sealing structure of fuel cell and methode for manufacturing the same | |
| CN110311152B (en) | Sealing method | |
| JP2009176573A (en) | Manufacturing method of fuel cell membrane / electrode assembly | |
| US20210288338A1 (en) | Fuel cell and method for producing fuel cell | |
| CN100346501C (en) | Sealing structure of fuel battery | |
| CN116368648A (en) | Membrane electrode unit for an electrochemical cell and method for producing a membrane electrode unit | |
| JP5619841B2 (en) | Method for producing polymer electrolyte fuel cell | |
| CN114824389A (en) | Preparation method of penta-hydrogen fuel cell membrane electrode and cell membrane electrode | |
| JP2018190535A (en) | Manufacturing method and device of polymer electrolyte with resin frame/electrode structure | |
| KR102633027B1 (en) | Manufacturing method of polymer electrolyte fuel cell using adhesive transfer and polymer electrolyte fuel cell manufactured by the same | |
| JP6131669B2 (en) | Membrane electrode assembly and manufacturing method thereof | |
| JP2004247294A (en) | Power generation element for fuel cell, method of manufacturing the same, and fuel cell using the power generation element | |
| JP5836060B2 (en) | Manufacturing method of fuel cell | |
| JP2012190720A (en) | Membrane electrode assembly in solid polymer fuel cell and method for manufacturing the same | |
| KR101304883B1 (en) | Hot press apparatus for manufacturing membrane-electrode assembly and method for manufacturing membrane-electrode assembly using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |