CN114497620B - Fuel cell double-frame membrane electrode assembly attaching device and method - Google Patents
Fuel cell double-frame membrane electrode assembly attaching device and method Download PDFInfo
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- CN114497620B CN114497620B CN202210246409.6A CN202210246409A CN114497620B CN 114497620 B CN114497620 B CN 114497620B CN 202210246409 A CN202210246409 A CN 202210246409A CN 114497620 B CN114497620 B CN 114497620B
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- positioning assembly
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- exchange membrane
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- 239000012528 membrane Substances 0.000 title claims abstract description 202
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 44
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 96
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 14
- 238000003825 pressing Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
Abstract
The invention relates to a device and a method for attaching a double-frame membrane electrode assembly of a fuel cell. The laminating device comprises a lower frame positioning assembly, wherein the lower frame positioning assembly is hinged with a proton exchange membrane positioning assembly, and the lower frame positioning assembly is connected with an upper frame positioning assembly in a sliding manner; the proton exchange membrane positioning assembly is provided with a boundary structure, the lower frame positioning mark is positioned by the boundary structure, and the upper frame positioning assembly is provided with an upper frame positioning mark; the lower frame positioning assembly is provided with a positioning element for limiting the upper frame positioning assembly, and the lower frame positioning assembly is also connected with a rolling mechanism in a sliding manner, wherein the rolling mechanism is used for stripping and attaching the upper frame from the upper frame positioning assembly to the proton exchange membrane. The invention provides a device and a method for attaching a double-frame membrane electrode assembly of a fuel cell, which have the advantages of accurate positioning, better sealing effect and simple working process.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a device and a method for attaching a double-frame membrane electrode assembly of a fuel cell.
Background
The proton exchange membrane fuel cell is a power generation device for directly converting energy of electrochemical reaction of hydrogen and oxidant (generally air) into electric energy, and has the advantages of high energy conversion efficiency, clean and pollution-free product water and the like, and has wide development and application prospects. A Membrane Electrode Assembly (MEA) is a core component of a fuel cell, and is mainly composed of a proton exchange membrane, a catalyst layer, a frame, a gas diffusion layer, and the like. As a core component of the fuel cell, it determines how good the fuel cell performs. During operation of a fuel cell, the proton exchange membrane needs to effectively block fuel from oxidant, preventing degradation of cell performance and life degradation caused by hydrogen and oxidant interpenetration. Because the proton exchange membrane has low mechanical strength, the proton exchange membrane needs to be fixed on a frame with certain strength by glue, so as to achieve the sealing effect.
Therefore, how to ensure accurate positioning between the proton exchange membrane and the glue on the frame for the fuel cell membrane electrode assembly becomes an important standard for the lamination quality of the membrane electrode.
The uniformity of membrane electrode laminating precision can not be kept to traditional laminating equipment, exists the bubble between frame and the frame. Some of the automated devices have made up for the above drawbacks, but the automated devices are particularly expensive and cannot be accepted by the general enterprises. Therefore, developing a device with good product precision consistency, better sealing effect, no bubbles and high cost performance becomes an important point in the field.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a fuel cell double-frame membrane electrode assembly laminating device and method with accurate positioning, better sealing effect and simple working process.
The technical scheme adopted by the invention is as follows:
the utility model provides a fuel cell double-frame membrane electrode assembly laminating device, includes the lower frame location sub-assembly that is used for the location lower frame, articulates on the lower frame location sub-assembly has the proton exchange membrane location sub-assembly that is used for the location proton exchange membrane, and sliding connection has last frame location sub-assembly on the lower frame location sub-assembly, and last frame location sub-assembly inclines to set up for lower frame location sub-assembly; the proton exchange membrane positioning assembly is provided with a boundary structure for limiting a proton exchange membrane, the lower frame positioning mark is positioned by the boundary structure, and the upper frame positioning assembly is provided with an upper frame positioning mark; the lower frame positioning assembly is provided with a positioning element for limiting the upper frame positioning assembly, and the lower frame positioning assembly is also connected with a rolling mechanism in a sliding manner, wherein the rolling mechanism is used for stripping and attaching the upper frame from the upper frame positioning assembly to the proton exchange membrane.
After the bottom film is positioned on the proton exchange film positioning assembly by a boundary structure, the lower frame positioning assembly and the proton exchange film positioning assembly are closed so as to transfer the bottom film to the frame positioning assembly, and then a lower frame positioning mark is made on the lower frame positioning assembly through the bottom film. When the lower frame is placed on the lower frame positioning assembly, positioning the pressure-sensitive adhesive on the lower frame by using a lower frame positioning mark; when the proton exchange membrane is placed on the proton exchange membrane positioning assembly, the proton exchange membrane is positioned by a boundary structure; and then the lower frame positioning assembly and the proton exchange membrane positioning assembly are closed, so that the lower frame is bonded with the proton exchange membrane. And positioning the pressure-sensitive adhesive on the upper frame by using the frame positioning mark, moving the upper frame positioning assembly to the position of the positioning element, and pressing the upper frame onto the proton exchange membrane by using the rolling mechanism to obtain the membrane electrode assembly. Because the initial positioning references of the lower frame and the proton exchange membrane are both boundary structures, the matching precision of the lower frame and the proton exchange membrane is high. The upper frame is positioned by the upper frame positioning mark, and the upper frame positioning assembly is accurately positioned by the positioning element, so that the upper frame is accurately attached to the proton exchange membrane and the lower frame.
As the preferable scheme of the invention, the invention further comprises a vacuum pump, and the upper frame positioning assembly, the proton exchange membrane positioning assembly and the lower frame positioning assembly are all connected with the vacuum pump through air pipes.
The vacuum pump can vacuumize the lower frame positioning assembly, the proton exchange membrane positioning assembly and the upper frame positioning assembly, and after the lower frame, the proton exchange membrane and the upper frame are placed, the lower frame positioning assembly, the proton exchange membrane positioning assembly and the upper frame positioning assembly can be vacuumized respectively, so that the lower frame or the proton exchange membrane or the upper frame is prevented from moving. When the vacuum pump is used for attaching the membrane electrode assembly, the lower frame, the proton exchange membrane and the upper frame cannot be misplaced, so that attaching precision can be ensured.
As a preferable scheme of the invention, the lower frame positioning assembly comprises a bottom plate, a lower frame adsorption table is connected to the bottom plate, a lower frame positioning mark is arranged on the lower frame adsorption table, the proton exchange membrane positioning assembly is hinged with the lower frame adsorption table, and a positioning element is fixed on the lower frame adsorption table; a first vacuum cavity is arranged between the lower frame adsorption table and the bottom plate, the vacuum pump is communicated with the first vacuum cavity through an air pipe, and a plurality of lower frame adsorption micro holes are formed in the lower frame adsorption table. When the lower frame placed on the lower frame adsorption table is required to be adsorbed, an air pipe between the vacuum pump and the lower frame positioning assembly is opened, and the vacuum pump is started to vacuumize the first vacuum cavity. Because the lower frame adsorption table is provided with a plurality of lower frame adsorption micro holes, the lower frame can be reliably adsorbed on the lower frame adsorption table.
As a preferable scheme of the invention, the lower frame adsorption table is provided with a sliding rail, the upper frame positioning assembly is provided with an upper frame sliding block, the rolling mechanism is provided with a rolling sliding block, and the upper frame sliding block and the rolling sliding block are both sleeved in the sliding rail. The rolling mechanism box upper frame positioning assembly moves on the lower frame adsorption table through the sliding rail, so that the rolling mechanism and the upper frame positioning assembly can move along an accurate path, and the accuracy of upper frame adhesion is guaranteed.
As a preferred scheme of the invention, the proton exchange membrane positioning assembly comprises a cover plate, the cover plate is hinged with the lower frame positioning assembly, a proton exchange membrane adsorption table is connected to the cover plate, a second vacuum cavity is arranged between the proton exchange membrane adsorption table and the cover plate, a vacuum pump is communicated with the second vacuum cavity through an air pipe, a plurality of proton exchange membrane adsorption micro holes are arranged on the proton exchange membrane adsorption table, and a boundary structure is arranged on the proton exchange membrane adsorption table. When the vacuum pump vacuumizes the second vacuum cavity, the proton exchange membrane adsorption table adsorbs the proton exchange membrane or the bottom membrane, so that the situation that the proton exchange membrane is misplaced when the proton exchange membrane positioning assembly is closed is avoided.
As a preferable scheme of the invention, the boundary structure is a boss, and the proton exchange membrane adsorption micro-holes are arranged on the boss. The proton exchange membrane adsorption micro holes are arranged on the boss, so that the proton exchange membrane or the bottom membrane can be reliably adsorbed by the proton exchange membrane adsorption table. And the edge of the boss can position the proton exchange membrane or the bottom membrane, when the size and the shape of the proton exchange membrane or the bottom membrane are the same as those of the boss, the proton exchange membrane or the bottom membrane is only required to be aligned with the boss, and the proton exchange membrane or the bottom membrane can be conveniently and rapidly positioned.
As a preferred scheme of the invention, the upper frame positioning assembly comprises a bracket, an upper frame sliding block is fixed on the bracket, the upper frame sliding block is in sliding connection with the lower frame positioning assembly, an upper frame adsorption table is connected on the bracket, and an upper frame positioning mark is arranged on the upper frame adsorption table; the upper frame adsorption table is provided with a plurality of upper frame adsorption micro holes. When the upper frame placed on the upper frame adsorption table is required to be adsorbed, an air pipe between the vacuum pump and the upper frame positioning assembly is opened, and the vacuum pump is started to vacuumize the third vacuum cavity. Because the upper frame adsorption table is provided with a plurality of upper frame adsorption micro holes, the upper frame can be reliably adsorbed on the upper frame adsorption table.
As a preferable scheme of the invention, a positioning block for being matched with the positioning element is fixed on the bracket. When the positioning block contacts the positioning element on the lower frame positioning assembly, the upper frame positioning assembly moves in place, and the rolling mechanism is used for pressing the upper frame onto the proton exchange membrane, so that the upper frame can be ensured to be accurately attached.
As a preferable scheme of the invention, the rolling mechanism comprises a transverse frame, a rubber roller is rotationally connected to the transverse frame, a rolling sliding block is fixed to the transverse frame, and the rolling sliding block is in sliding connection with the lower frame positioning assembly. When the sliding roll mechanism is used, the rubber roller can accurately press the upper frame onto the proton exchange membrane, so that the reliable lamination of the lower frame, the proton exchange membrane and the upper frame is realized.
A method for attaching a double-frame membrane electrode assembly of a fuel cell comprises the following steps:
s1: placing a bottom film with the same size and shape as the pressure-sensitive adhesive on the lower frame on a proton exchange membrane positioning assembly, positioning the bottom film by using a boundary structure, and starting a vacuum pump to vacuumize the proton exchange membrane positioning assembly;
s2: closing the proton exchange membrane positioning assembly and the lower frame positioning assembly, attaching a bottom membrane to the lower frame positioning assembly, and making a lower frame positioning mark on the lower frame positioning assembly by using the bottom membrane;
s3: placing the cut lower frame on the lower frame positioning assembly with the pressure-sensitive adhesive surface upwards, positioning the pressure-sensitive adhesive on the lower frame by using a lower frame positioning mark, and starting a vacuum pump to vacuumize the lower frame positioning assembly;
s4: placing the cut proton exchange membrane on a proton exchange membrane positioning assembly, positioning the proton exchange membrane by using a boundary structure, and starting a vacuum pump to vacuumize the proton exchange membrane positioning assembly;
s5: closing the proton exchange membrane positioning assembly and the lower frame positioning assembly, and attaching the lower frame to the proton exchange membrane;
s6: placing the cut upper frame on the upper frame positioning assembly with the pressure-sensitive adhesive surface facing downwards, positioning the pressure-sensitive adhesive on the upper frame by using an upper frame positioning mark, and starting a vacuum pump to vacuumize the upper frame positioning assembly;
s7: and pushing the upper frame positioning component to a position contacting the positioning element, repeatedly rolling by a rolling mechanism, and pressing the upper frame onto the proton exchange membrane to finish the membrane electrode manufacturing.
The beneficial effects of the invention are as follows:
1. the lower frame positioning mark proton exchange membrane positioning assembly takes a boundary structure as a reference. Because the initial positioning references of the lower frame and the proton exchange membrane are both boundary structures, the matching precision of the lower frame and the proton exchange membrane is high. The upper frame is positioned by the upper frame positioning mark, and the upper frame positioning assembly is accurately positioned by the positioning element, so that the upper frame is accurately attached to the proton exchange membrane and the lower frame. Therefore, the invention can ensure that the lower frame, the proton exchange membrane and the upper frame are attached with higher precision, and the yield is high.
2. When the membrane electrode assembly is attached, after the lower frame, the proton exchange membrane and the upper frame are positioned through the lower frame positioning assembly, the proton exchange membrane positioning assembly and the upper frame positioning assembly respectively, manual positioning is not needed, and the operation is simple and the efficiency is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of a portion of the structure of the present invention;
FIG. 3 is a schematic diagram of the structure between the proton exchange membrane positioning assemblies.
In the drawings, a 1-lower frame positioning assembly; 2-proton exchange membrane positioning assembly; 3-upper rim positioning assembly; 4-a rolling mechanism; 5-a vacuum pump; 11-a bottom plate; 12-a lower frame adsorption table; 13-lower frame positioning marks; 14-positioning elements; 15-a first vacuum chamber; 16-adsorbing micro holes on the lower frame; 17-slide rails; 18-fixing piece; 19-supporting columns; 21-cover plate; 22-a proton exchange membrane adsorption stage; 23-boundary structure; 24-a second vacuum chamber; 25-proton exchange membrane adsorption micro-holes; 31-a bracket; 32-upper frame slide blocks; 33-an upper frame adsorption stage; 34-upper frame positioning marks; 35-a third vacuum chamber; 36-adsorbing micro holes on the upper frame; 37-positioning blocks; 41-a cross frame; 42-rubber roller; 43-rolling the slide block.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 3, the attaching device for a fuel cell double-frame membrane electrode assembly of the present embodiment includes a lower frame positioning assembly 1 for positioning a lower frame, a proton exchange membrane positioning assembly 2 for positioning a proton exchange membrane is hinged on the lower frame positioning assembly 1, an upper frame positioning assembly 3 is slidingly connected on the lower frame positioning assembly 1, and the upper frame positioning assembly 3 is obliquely arranged relative to the lower frame positioning assembly 1; the lower frame positioning assembly 1 is provided with a lower frame positioning mark 13 for positioning a lower frame, the proton exchange membrane positioning assembly 2 is provided with a boundary structure 23 for limiting a proton exchange membrane, the lower frame positioning mark 13 is positioned by the boundary structure 23, and the upper frame positioning assembly 3 is provided with an upper frame positioning mark 34; the lower frame positioning assembly 1 is provided with a positioning element 14 for limiting the upper frame positioning assembly 3, and the lower frame positioning assembly 1 is also connected with a rolling mechanism 4 in a sliding manner for stripping and attaching the upper frame from the upper frame positioning assembly 3 to the proton exchange membrane. The invention also comprises a vacuum pump 5, and the upper frame positioning assembly 3, the proton exchange membrane positioning assembly 2 and the lower frame positioning assembly 1 are all connected with the vacuum pump 5 through air pipes.
Wherein the proton exchange membrane may be a proton exchange membrane without sprayed catalyst or with sprayed catalyst.
After the bottom film is positioned on the proton exchange film positioning assembly 2 by the boundary structure 23, the lower frame positioning assembly 1 and the proton exchange film positioning assembly 2 are closed so as to transfer the bottom film to the frame positioning assembly, and then the lower frame positioning mark 13 is made on the lower frame positioning assembly 1 through the bottom film. When the lower frame is placed on the lower frame positioning assembly 1, the pressure-sensitive adhesive on the lower frame is positioned by the lower frame positioning mark 13; when the proton exchange membrane is placed on the proton exchange membrane positioning assembly 2, the proton exchange membrane is positioned by a boundary structure 23; and then the lower frame positioning assembly 1 and the proton exchange membrane positioning assembly 2 are closed, so that the lower frame is bonded with the proton exchange membrane. And positioning the pressure-sensitive adhesive on the upper frame by using the frame positioning mark 34, moving the upper frame positioning assembly 3 to the position of the positioning element 14, and pressing the upper frame onto the proton exchange membrane by using the rolling mechanism 4 to obtain the membrane electrode assembly. Because the initial positioning references of the lower frame and the proton exchange membrane are both boundary structures 23, the matching precision of the lower frame and the proton exchange membrane is high. The upper frame is positioned above the upper frame positioning mark 34, and the upper frame positioning assembly 3 is accurately positioned through the positioning element 14, so that the upper frame is accurately attached to the proton exchange membrane and the lower frame.
The vacuum pump 5 can vacuumize the lower frame positioning assembly 1, the proton exchange membrane positioning assembly 2 and the upper frame positioning assembly 3, and after the lower frame, the proton exchange membrane and the upper frame are placed, the lower frame positioning assembly 1, the proton exchange membrane positioning assembly 2 and the upper frame positioning assembly 3 can be vacuumized respectively, so that the lower frame, the proton exchange membrane or the upper frame is prevented from moving. When the vacuum pump 5 is used for attaching the membrane electrode assembly, the lower frame, the proton exchange membrane and the upper frame cannot be misplaced, and the attaching precision can be ensured.
Specifically, the lower frame positioning assembly 1 comprises a bottom plate 11, a plurality of support columns 19 are installed at the bottom of the bottom plate 11, a lower frame adsorption table 12 is connected to the bottom plate 11, a lower frame positioning mark 13 is arranged on the lower frame adsorption table 12, the proton exchange membrane positioning assembly 2 is hinged with the lower frame adsorption table 12, and a positioning element 14 is fixed on the lower frame adsorption table 12; a first vacuum cavity 15 is arranged between the lower frame adsorption table 12 and the bottom plate 11, the vacuum pump 5 is communicated with the first vacuum cavity 15 through an air pipe, and a plurality of lower frame adsorption micro holes 16 are formed in the lower frame adsorption table 12. When the lower frame placed on the lower frame adsorption table 12 needs to be adsorbed, an air pipe between the vacuum pump 5 and the lower frame positioning assembly 1 is opened, and the vacuum pump 5 is started to vacuumize the first vacuum cavity 15. Because the lower frame adsorption table 12 is provided with a plurality of lower frame adsorption micro holes 16, the lower frame can be reliably adsorbed on the lower frame adsorption table 12.
The lower frame adsorption table 12 is provided with a slide rail 17, the upper frame positioning assembly 3 is provided with an upper frame sliding block 32, the rolling mechanism 4 is provided with a rolling sliding block 43, and the upper frame sliding block 32 and the rolling sliding block 43 are both sleeved in the slide rail 17. The rolling mechanism 4 box upper frame positioning assembly 3 moves on the lower frame adsorption table 12 through the sliding rail 17, so that the rolling mechanism 4 and the upper frame positioning assembly 3 can move along an accurate path, and the accuracy of upper frame adhesion is guaranteed. The upper frame slider 32 and the rolling slider 43 are each provided with a plurality of rollers, so that the upper frame slider 32 and the rolling slider 43 are smoother when moving.
Specifically, the proton exchange membrane positioning assembly 2 includes a cover plate 21, the cover plate 21 is hinged to the lower frame positioning assembly 1, a proton exchange membrane adsorption table 22 is connected to the cover plate 21, a second vacuum chamber 24 is provided between the proton exchange membrane adsorption table 22 and the cover plate 21, the vacuum pump 5 is communicated with the second vacuum chamber 24 through an air pipe, a plurality of proton exchange membrane adsorption micro holes 25 are provided on the proton exchange membrane adsorption table 22, and a boundary structure 23 is provided on the proton exchange membrane adsorption table 22. When the vacuum pump 5 vacuumizes the second vacuum cavity 24, the proton exchange membrane adsorption table 22 adsorbs the proton exchange membrane or the bottom membrane, so that the situation of dislocation of the proton exchange membrane when the proton exchange membrane positioning assembly 2 is closed is avoided.
Wherein the boundary structure 23 is a boss, and the proton exchange membrane adsorption micro-hole 25 is disposed on the boss. The proton exchange membrane adsorption micro holes 25 are arranged on the boss, so that the proton exchange membrane or the bottom membrane can be reliably adsorbed by the proton exchange membrane adsorption table 22. And the edge of the boss can position the proton exchange membrane or the bottom membrane, when the size and the shape of the proton exchange membrane or the bottom membrane are the same as those of the boss, the proton exchange membrane or the bottom membrane is only required to be aligned with the boss, and the proton exchange membrane or the bottom membrane can be conveniently and rapidly positioned.
The fixing member 18 is fixed on the lower frame adsorption table 12, and the proton exchange membrane positioning assembly 2 is rotatably connected to the edge of the fixing member 18, such as a hinge. The proton exchange membrane positioning assembly 2 is hinged with the lower frame adsorption table 12 through the fixing piece 18, so that when the proton exchange membrane positioning assembly 2 is closed, gaps between the proton exchange membrane positioning assembly 2 and the lower frame positioning assembly 1 are the same, and the lower frame and the proton exchange membrane are uniformly and reliably pressed and attached. The linking device is not limited to a fixed type such as a hinge, a thimble, a surface contact type rotation, a bearing, or a non-fixed type such as a hand-held type.
Specifically, the upper frame positioning assembly 3 includes a bracket 31, an upper frame slider 32 is fixed on the bracket 31, the upper frame slider 32 is slidably connected with the lower frame positioning assembly 1, an upper frame adsorption table 33 is connected on the bracket 31, and an upper frame positioning mark 34 is arranged on the upper frame adsorption table 33; a third vacuum cavity 35 is arranged between the upper frame adsorption table 33 and the bracket 31, the vacuum pump 5 is communicated with the third vacuum cavity 35 through an air pipe, and a plurality of upper frame adsorption micro holes 36 are arranged on the upper frame adsorption table 33. When the upper frame placed on the upper frame adsorption table 33 needs to be adsorbed, an air pipe between the vacuum pump 5 and the upper frame positioning assembly 3 is opened, and the vacuum pump 5 is started to vacuumize the third vacuum chamber 35. Because the upper frame adsorption table 33 is provided with a plurality of upper frame adsorption micro holes 36, the upper frame can be reliably adsorbed on the upper frame adsorption table 33.
The upper frame adsorption stage 33 may be located on the upper side of the bracket 31 or may be located on the lower side of the bracket 31.
A positioning block 37 for matching with the positioning element 14 is fixed on the bracket 31. When the positioning block 37 contacts the positioning element 14 on the lower frame positioning assembly 1, the upper frame positioning assembly 3 moves to the right position, and the rolling mechanism 4 is used for pressing the upper frame onto the proton exchange membrane, so that the upper frame can be ensured to be accurately attached.
Specifically, the rolling mechanism 4 includes a transverse frame 41, a rubber roller 42 is rotatably connected to the transverse frame 41, a rolling sliding block 43 is fixed to the transverse frame 41, and the rolling sliding block 43 is slidably connected to the lower frame positioning assembly 1. When the rolling mechanism 4 is slid, the rubber roller 42 can accurately press the upper frame onto the proton exchange membrane, so that the reliable lamination of the lower frame, the proton exchange membrane and the upper frame is realized.
A method for attaching a double-frame membrane electrode assembly of a fuel cell comprises the following steps:
s1: placing a bottom film with the same size and shape as those of the pressure-sensitive adhesive on the lower frame on a proton exchange membrane adsorption table 22, positioning the bottom film by using a boss, and starting a vacuum pump 5 to vacuumize the proton exchange membrane positioning assembly 2;
s2: closing the proton exchange membrane positioning assembly 2 and the lower frame positioning assembly 1, attaching a bottom film to the lower frame adsorption table 12, and making a lower frame positioning mark 13 on the lower frame adsorption table 12 by using the bottom film;
s3: placing the cut lower frame on the lower frame positioning assembly 1 with the pressure-sensitive adhesive surface upwards, positioning the pressure-sensitive adhesive on the lower frame by using the lower frame positioning mark 13, and starting the vacuum pump 5 to vacuumize the lower frame positioning assembly 1;
s4: placing the cut proton exchange membrane on a boss of a proton exchange membrane adsorption table 22, positioning the proton exchange membrane by using the boss, and starting a vacuum pump 5 to vacuumize the proton exchange membrane positioning assembly 2;
s5: closing the proton exchange membrane positioning assembly 2 and the lower frame positioning assembly 1, and attaching the lower frame to the proton exchange membrane;
s6: placing the cut upper frame on an upper frame adsorption table 33 with the pressure-sensitive adhesive surface facing downwards, extending the upper frame adsorption table 33 from one end of the upper frame, which is close to the rolling mechanism 4, positioning the pressure-sensitive adhesive on the upper frame by using an upper frame positioning mark 34, and starting a vacuum pump 5 to vacuumize the upper frame positioning assembly 3;
s7: the upper frame positioning assembly is pushed to the position contacting the positioning element 14, the rolling mechanism 4 presses one end of the upper frame, which extends out, the upper frame positioning assembly 3 and the rolling mechanism 4 are synchronously moved, the upper frame is pressed on the proton exchange membrane, and then the rubber roller 42 is reciprocally rolled, so that the membrane electrode manufacturing is completed.
It should be noted that: the angle between the upper frame positioning assembly 3 and the lower frame positioning assembly 1 is smaller than 60 degrees. The hardness of the rubber roller 42 is HR30-40. The diameter of the proton exchange membrane adsorption micro holes 25, the diameter of the upper frame adsorption micro holes 36 and the diameter of the lower frame adsorption micro holes 16 are not more than 5mm. The vacuum degree of the first vacuum chamber 15, the second vacuum chamber 24 and the third vacuum chamber 35 is-5 kpa to-101.325 kpa.
The invention is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present invention, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present invention, fall within the scope of protection of the present invention.
Claims (9)
1. The laminating device of the double-frame membrane electrode assembly of the fuel cell is characterized by comprising a lower frame positioning assembly (1) for positioning a lower frame, wherein a proton exchange membrane positioning assembly (2) for positioning a proton exchange membrane is hinged on the lower frame positioning assembly (1), an upper frame positioning assembly (3) is connected onto the lower frame positioning assembly (1) in a sliding manner, and the upper frame positioning assembly (3) is obliquely arranged relative to the lower frame positioning assembly (1); the proton exchange membrane positioning assembly (2) is provided with a boundary structure (23) for limiting the proton exchange membrane, the lower frame positioning assembly (1) is provided with a lower frame positioning mark (13), the lower frame positioning mark (13) is positioned by the boundary structure (23), and the upper frame positioning assembly (3) is provided with an upper frame positioning mark (34); the lower frame positioning assembly (1) is provided with a positioning element (14) for limiting the upper frame positioning assembly (3), and the lower frame positioning assembly (1) is also connected with a rolling mechanism (4) in a sliding manner, wherein the rolling mechanism is used for stripping and attaching the upper frame from the upper frame positioning assembly (3) to the proton exchange membrane;
the device also comprises a vacuum pump (5), wherein the upper frame positioning assembly (3), the proton exchange membrane positioning assembly (2) and the lower frame positioning assembly (1) are connected with the vacuum pump (5) through air pipes.
2. The device for attaching the double-frame membrane electrode assembly of the fuel cell according to claim 1, wherein the lower frame positioning assembly (1) comprises a bottom plate (11), a lower frame adsorption table (12) is connected to the bottom plate (11), a lower frame positioning mark (13) is arranged on the lower frame adsorption table (12), the proton exchange membrane positioning assembly (2) is hinged with the lower frame adsorption table (12), and a positioning element (14) is fixed on the lower frame adsorption table (12); a first vacuum cavity (15) is arranged between the lower frame adsorption table (12) and the bottom plate (11), the vacuum pump (5) is communicated with the first vacuum cavity (15) through an air pipe, and a plurality of lower frame adsorption micro holes (16) are formed in the lower frame adsorption table (12).
3. The attaching device for the double-frame membrane electrode assembly of the fuel cell according to claim 2, wherein a sliding rail (17) is arranged on the lower frame adsorption table (12), an upper frame sliding block (32) is arranged on the upper frame positioning assembly (3), a rolling sliding block (43) is arranged on the rolling mechanism (4), and the upper frame sliding block (32) and the rolling sliding block (43) are both sleeved in the sliding rail (17).
4. The attaching device of the double-frame membrane electrode assembly of the fuel cell according to claim 1, wherein the proton exchange membrane positioning assembly (2) comprises a cover plate (21), the cover plate (21) is hinged with the lower frame positioning assembly (1), a proton exchange membrane adsorption table (22) is connected on the cover plate (21), a second vacuum cavity (24) is arranged between the proton exchange membrane adsorption table (22) and the cover plate (21), the vacuum pump (5) is communicated with the second vacuum cavity (24) through an air pipe, a plurality of proton exchange membrane adsorption micro holes (25) are formed in the proton exchange membrane adsorption table (22), and a boundary structure (23) is arranged on the proton exchange membrane adsorption table (22).
5. The device for attaching a double-frame membrane electrode assembly to a fuel cell according to claim 4, wherein the boundary structure (23) is a boss, and the proton exchange membrane adsorption micro-holes (25) are formed in the boss.
6. The attaching device of a double-frame membrane electrode assembly of a fuel cell according to claim 1, wherein the upper frame positioning assembly (3) comprises a bracket (31), an upper frame sliding block (32) is fixed on the bracket (31), the upper frame sliding block (32) is in sliding connection with the lower frame positioning assembly (1), an upper frame adsorption table (33) is connected on the bracket (31), and an upper frame positioning mark (34) is arranged on the upper frame adsorption table (33); a third vacuum cavity (35) is arranged between the upper frame adsorption table (33) and the bracket (31), the vacuum pump (5) is communicated with the third vacuum cavity (35) through an air pipe, and a plurality of upper frame adsorption micro holes (36) are formed in the upper frame adsorption table (33).
7. The fuel cell double-frame membrane electrode assembly attaching device according to claim 6, wherein a positioning block (37) for being matched with the positioning element (14) is fixed on the bracket (31).
8. The attaching device of a double-frame membrane electrode assembly of a fuel cell according to claim 1, wherein the rolling mechanism (4) comprises a transverse frame (41), a rubber roller (42) is rotatably connected to the transverse frame (41), a rolling sliding block (43) is fixed to the transverse frame (41), and the rolling sliding block (43) is slidably connected with the lower frame positioning assembly (1).
9. A bonding method using the fuel cell double-frame membrane electrode assembly bonding device according to claim 1, characterized by comprising the steps of:
s1: placing a bottom film with the same size and shape as those of the pressure-sensitive adhesive on the lower frame on a proton exchange membrane positioning assembly (2), positioning the bottom film by using a boundary structure (23), and starting a vacuum pump (5) to vacuumize the proton exchange membrane positioning assembly (2);
s2: closing the proton exchange membrane positioning assembly (2) and the lower frame positioning assembly (1), attaching a bottom membrane to the lower frame positioning assembly (1), and making a lower frame positioning mark (13) on the lower frame positioning assembly (1) by using the bottom membrane;
s3: placing the cut lower frame on the lower frame positioning assembly (1) with the pressure-sensitive adhesive surface upwards, positioning the pressure-sensitive adhesive on the lower frame by using the lower frame positioning mark (13), and starting the vacuum pump (5) to vacuumize the lower frame positioning assembly (1);
s4: placing the cut proton exchange membrane on a proton exchange membrane positioning assembly (2), positioning the proton exchange membrane by using a boundary structure (23), and starting a vacuum pump (5) to vacuumize the proton exchange membrane positioning assembly (2);
s5: closing the proton exchange membrane positioning assembly (2) and the lower frame positioning assembly (1), and attaching the lower frame to the proton exchange membrane;
s6: placing the cut upper frame on the upper frame positioning assembly (3) with the pressure-sensitive adhesive surface downwards, positioning the pressure-sensitive adhesive on the upper frame by using an upper frame positioning mark (34), and starting a vacuum pump (5) to vacuumize the upper frame positioning assembly (3);
s7: the upper frame positioning component is pushed to the position contacting the positioning element (14), the rolling mechanism (4) repeatedly rolls, and the upper frame is pressed on the proton exchange membrane, thus finishing the membrane electrode manufacturing.
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