CN110649298B - Preparation system and preparation method of membrane electrode assembly of hydrogen fuel cell - Google Patents
Preparation system and preparation method of membrane electrode assembly of hydrogen fuel cell Download PDFInfo
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- CN110649298B CN110649298B CN201910945960.8A CN201910945960A CN110649298B CN 110649298 B CN110649298 B CN 110649298B CN 201910945960 A CN201910945960 A CN 201910945960A CN 110649298 B CN110649298 B CN 110649298B
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- 239000012528 membrane Substances 0.000 title claims abstract description 53
- 239000000446 fuel Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000001257 hydrogen Substances 0.000 title claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 99
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 230000007306 turnover Effects 0.000 claims abstract description 13
- 238000010030 laminating Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 226
- 238000012937 correction Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 210000000170 cell membrane Anatomy 0.000 claims 6
- 210000004027 cell Anatomy 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 borohydride Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0419—Methods of deposition of the material involving spraying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to the field of hydrogen fuel cell production equipment, and provides a preparation system and a preparation method of a membrane electrode assembly of a hydrogen fuel cell. The preparation system integrates GDL feeding equipment, CCM feeding equipment, a dispensing mechanism, a turnover laminating mechanism and a code spraying machine. Each link in the production process of the membrane electrode assembly is automated, labor cost is reduced, production efficiency is improved compared with manual production, and the space layout of each mechanism and station of the system is reasonable, the whole structure is compact, and occupied space is small. In addition, the preparation method optimizes the operation efficiency of the preparation system, can further improve the production efficiency, reduce the error rate and reduce the production cost of the membrane electrode assembly of the fuel cell.
Description
Technical Field
The invention belongs to the field of hydrogen fuel cell production equipment, and particularly relates to a preparation system and a preparation method of a membrane electrode assembly of a hydrogen fuel cell.
Background
Fuel cells are promising new power sources, generally using hydrogen, carbon, methanol, borohydride, gas or natural gas as fuel, as the negative electrode, and oxygen in air as the positive electrode. The main difference between the battery and the general battery is that the active material of the general battery is pre-placed inside the battery, and thus the battery capacity depends on the amount of the active material stored; while the active materials (fuel and oxidant) of the fuel cell are continuously supplied while reacting, such a cell is actually only an energy conversion device. The battery has the advantages of high conversion efficiency, large capacity, high specific energy, wide power range, no need of charging and the like.
The Membrane Electrode Assembly (MEA) is one of the most important parts of a hydrogen fuel cell, and is composed of a fuel Cell Chip (CCM), a Gas Diffusion Layer (GDL) and the like, and the working principle of the membrane electrode assembly is that hydrogen and oxygen positioned at two sides of an electrode are subjected to electrochemical reaction through the electrocatalytic action of a cathode and an anode and the proton conductivity of a proton exchange membrane to generate electric energy.
Among them, the fuel cell chip (CCM, catalyst coated membrane) is a catalyst/proton exchange membrane assembly prepared by coating a fuel cell catalyst on both sides of a proton exchange membrane. The gas diffusion layers (GDL, gas Diffusion Layer) are key components of the fuel cell, and are typically composed of carbon paper or carbon cloth, and mainly serve as mass transfer, electrical conduction, heat transfer, support for the catalytic layer, and water conduction, and at the same time, serve as a medium for diffusing hydrogen/oxygen or methanol/air into the catalytic layer for reaction, and thus must be porous and breathable materials.
At present, in the process of preparing the membrane electrode assembly, the GDL and the CCM mainly adopt manual feeding, but the manual feeding mode has low production efficiency and cannot realize automatic production.
For this reason, there is a need for a membrane electrode assembly manufacturing apparatus and related manufacturing process.
Disclosure of Invention
The invention aims to solve the technical problems that the production efficiency is low and automatic production cannot be realized due to the adoption of a manual feeding mode for a membrane electrode assembly of a hydrogen fuel cell.
The invention is realized in such a way that a preparation system of a membrane electrode assembly of a hydrogen fuel cell comprises a first material frame for placing GDL material stack, GDL material loading equipment, a second material frame for placing CCM material stack, CCM material loading equipment, a working platform A, a working platform B, a first platform moving module, a second platform moving module, a dispensing mechanism, a turnover laminating mechanism, a code spraying machine and a controller; the first material frame comprises a first material frame A and a first material frame B which are respectively used for placing different types of GDL stacked materials; the GDL feeding equipment comprises a first image acquisition device for shooting a positioning mark on a GDL material, the CCM feeding equipment comprises a second image acquisition device for shooting the positioning mark on the CCM material, and the dispensing mechanism comprises a visual positioning device for shooting a dispensing mark on the GDL material;
the GDL feeding equipment, the CCM feeding equipment, the first platform moving module, the second platform moving module, the dispensing mechanism, the overturning and attaching mechanism, the code spraying machine, the first image acquisition device, the second image acquisition device and the visual positioning device are all electrically connected with the controller; the first image acquisition device, the second image acquisition device and the visual positioning device acquire marking information through photographing and then feed back to the controller for processing to obtain positioning data; the controller controls the GDL feeding equipment, the CCM feeding equipment and the dispensing mechanism to do corresponding movement according to the positioning data;
the GDL feeding equipment is used for sucking GDL materials in the first material frame A onto the working platform A; absorbing the GDL material in the first material frame B onto the working platform B; the CCM feeding equipment is used for sucking CCM materials in the second material frame to the working platform A and conveying the prepared membrane electrode assembly to a blanking area;
the first platform moving module is used for driving the working platform A to enable the working platform A to reciprocate between the GDL feeding equipment and the CCM feeding equipment; the second platform moving module is used for driving the working platform B to enable the working platform B to reciprocate between the GDL feeding equipment and the CCM feeding equipment;
the controller controls the dispensing mechanism to dispense the GDL materials on the working platform A and the working platform B; after the dispensing of the GDL material on the working platform A is completed, the controller controls the CCM feeding equipment to absorb and attach a piece of CCM material to the GDL material of the working platform B to obtain a GDL and CCM semi-finished product,
the controller controls the overturning and attaching mechanism to overturn the GDL material on the working platform A by 180 degrees, so that the GDL on the working platform A and the CCM material on the working platform B are attached together;
after the membrane electrode assembly is attached, the controller controls the code spraying machine to spray codes on the membrane electrode assembly;
after the code spraying is finished, the controller controls the CCM feeding equipment to carry the prepared membrane electrode assembly to a blanking area.
Further, the GDL feeding device comprises a GDL feeding mechanism and a first moving mechanism for moving the GDL feeding mechanism, wherein the GDL feeding mechanism comprises a suction device for generating suction by utilizing a Venturi effect, a first vacuum generator and a first vacuum suction multi-functional plate; the suction device and the first vacuum generator are electrically connected with the controller; the suction device is opened, high-speed fluid is blown out, low pressure is generated near the fluid flowing at high speed, the low pressure enables gases in different directions to pass through the GDL stacks, the GDL stacks are separated from each other, and GDL materials at the top are adsorbed to the first vacuum suction multi-functional plate under the action of suction force; when the material is adsorbed to the first vacuum suction multi-functional plate, the first vacuum generator is started to suck the GDL material flat; and simultaneously closing the suction means.
Further, the GDL feeding mechanism further comprises an ultrasonic detector, the ultrasonic detector is provided with a probe capable of transmitting ultrasonic pulses and a receiver for receiving the ultrasonic pulses, the ultrasonic pulses penetrate through the GDL material to be detected along the thickness direction of the GDL material to be detected and then enter the receiver, and the thickness of the GDL material to be detected can be determined by measuring the propagation time of the ultrasonic pulses in the GDL material to be detected;
the ultrasonic detector sends thickness information of the detected GDL materials to the controller, and the controller compares the thickness information with thickness data of single GDL materials preset in the controller to judge whether more than two GDL materials are absorbed;
when the judgment result is that one sheet is obtained, the controller controls the first moving mechanism to put the GDL material on the working platform A or the working platform B; when the judging result is that more than two sheets are obtained, the controller controls the vacuum generator to be closed, after the GDL material is put back into the material frame, the suction device is restarted to perform suction operation, and if more than two sheets are sucked for multiple times, the alarm device alarms.
Further, the GDL feeding mechanism further comprises a color code sensor, and the color code sensor realizes color code detection by comparing with a non-color code area; the color code sensor comprises a light source and a light receiver, wherein the light source is arranged perpendicular to the measured GDL material, the light receiver is arranged at an acute angle with the measured material, and the color is different because the materials of the positive surface and the negative surface of the measured GDL material are different, and the color code sensor is electrically connected with the controller; the color code sensor sends the detected color code information to the controller, and the controller compares the color code information with non-color code area data prestored in the controller so as to judge whether the sucked GDL material is correct or not; and if judging that the fault exists, putting the GDL material on the working platform A or the working platform B through the first moving mechanism, and if judging that the fault exists, putting the GDL material in a stagnation area.
Further, the CCM feeding equipment comprises a sucking mechanism for sucking CCM materials and a membrane electrode assembly and a second moving mechanism, wherein the second moving mechanism is used for moving the sucking mechanism; the suction mechanism comprises a second vacuum generator and a second vacuum suction multi-functional plate; the second vacuum generator is arranged above the second vacuum suction multi-functional plate.
Further, the second moving mechanism comprises an X-axis moving module for driving the suction mechanism to move left and right, a Y-axis moving module for driving the suction mechanism to move front and back, a Z-axis moving module for driving the suction mechanism to move up and down, and an R-axis rotating module for driving the suction mechanism to rotate around the Z axis.
Further, the dispensing mechanism comprises a dispensing X-axis manipulator, a dispensing Y-axis manipulator, a dispensing Z-axis manipulator and a glue injection valve; the first platform moving module and the second platform moving module are used as dispensing Y-axis mechanical arms of the dispensing mechanism.
Further, the preparation system also comprises a fan filter unit, wherein the fan filter unit is provided with a fan, a primary filter screen and an advanced filter screen; the fan sucks air from the top of the fan filter unit, filters the air through the primary filter screen and the advanced filter screen, and sends out the filtered clean air at a uniform speed on the whole air outlet surface.
Further, the first platform moving module is arranged in parallel with the second platform moving module, and the first platform moving module is sequentially divided into a GDL feeding station, a dispensing station and a CCM feeding station along the length direction of the first platform moving module; the second platform moving module is sequentially divided into a GDL feeding station, a dispensing station, a code spraying station and a turnover laminating station along the length direction of the second platform moving module.
The invention also provides a method for preparing a membrane electrode assembly by using the preparation system, which at least comprises the following steps:
step S1, respectively placing two types of GDL stacked materials into a first material frame A and a first material frame B;
s2, placing a working platform A and a working platform B at a GDL feeding station, firstly absorbing a piece of GDL material from a first material frame A by GDL feeding equipment, photographing the GDL material by a first image acquisition device to obtain orientation information of the GDL material, transmitting the orientation information to a controller, comparing the orientation information with correct GDL material orientation information prestored in the controller, and controlling the GDL feeding equipment to rotate the GDL material by the controller according to a comparison result so as to correct the orientation of the GDL material by the controller; after azimuth correction, the bearing is placed on a working platform A; then, the GDL feeding equipment absorbs a GDL material from the first material frame B, and places the GDL material on the working platform B after azimuth correction;
step S3, moving the working platform A and the working platform B to a dispensing station, photographing the GDL material by a visual positioning device to obtain a dispensing starting point on the GDL material, positioning a dispensing mechanism to the dispensing starting point, moving according to a set dispensing track, and dispensing the GDL material on the working platform A and the working platform B respectively;
step S4, moving the working platform A to a CCM feeding station, moving the working platform B to a turnover laminating station, sucking a block of CCM material from a second material frame by the CCM feeding equipment, photographing the CCM material by a second image acquisition device to obtain azimuth information of the CCM material, transmitting the azimuth information to a controller, comparing the azimuth information with correct azimuth information of the CCM material prestored in the controller, and controlling the CCM feeding equipment to rotate CCM according to a comparison result by the controller so as to correct the azimuth of the CCM material; after azimuth correction, the CCM material is stuck to the GDL material on the working platform B, so as to obtain a GDL and CCM semi-finished product; the method comprises the steps of carrying out a first treatment on the surface of the
S5, starting a turnover attaching mechanism to enable the GDL material on the working platform A to turn over 180 degrees and attach with the CCM material on the working platform B to obtain a membrane electrode assembly;
step S6, moving the working platform B to a code spraying station, and moving a code spraying machine to spray codes to the membrane electrode assembly on the working platform B;
and S7, moving the working platform B to the CCM feeding station again, and sucking the finished membrane electrode assembly product on the working platform B to a blanking area by the CCM feeding equipment.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a preparation system and a preparation method for preparing a membrane electrode assembly of a hydrogen fuel cell, wherein the preparation system integrates GDL feeding equipment, CCM feeding equipment, a dispensing mechanism, a turnover laminating mechanism and a code spraying machine. Each link in the production process of the membrane electrode assembly is automated, labor cost is reduced, production efficiency is improved compared with manual production, and the space layout of each mechanism and station of the system is reasonable, the whole structure is compact, and occupied space is small.
In addition, the preparation method optimizes the operation efficiency of the preparation system, can further improve the production efficiency, reduce the error rate and reduce the production cost of the membrane electrode assembly of the fuel cell.
Drawings
FIG. 1 is a schematic plan view of a manufacturing system for a membrane electrode assembly of a hydrogen fuel cell according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the GDL loading apparatus of FIG. 1;
FIG. 3 is a schematic perspective view of the GDL loading mechanism of FIG. 2;
FIG. 4 is a schematic view of another perspective of the GDL loading apparatus shown in FIG. 3;
FIG. 5 is a schematic diagram of an exploded construction of the GDL loading apparatus shown in FIG. 3;
FIG. 6 is a schematic perspective view of the CCM feeding apparatus of FIG. 1;
FIG. 7 is a schematic view of another perspective view of the CCM feeding apparatus shown in FIG. 6;
FIG. 8 is a schematic perspective view of the CCM feeding mechanism of FIG. 6;
fig. 9 is a flow chart of a membrane electrode assembly prepared using the preparation system shown in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a preparation system of a membrane electrode assembly of a hydrogen fuel cell provided by the embodiment of the invention includes a machine platform 100, a first material frame for placing GDL stacks, a GDL feeding device 2, a second material frame 3 for placing CCM stacks, a CCM feeding device 4, a working platform a51, a working platform B52, a first platform moving module 61, a second platform moving module 62, a dispensing mechanism 7, a turnover attaching mechanism 8, a code spraying machine 9, a fan filter unit, a blanking area 10 and a controller.
The first frame includes a first frame a11 and a first frame B12 for respectively placing different types of GDL stacks, in this embodiment, the different types of GDL stacks are cathode GDL stacks and anode GDL stacks. The first material frame A11 and the first material frame B12 are respectively positioned at two sides of one end of the machine 100, and the second material frame 3 is used for placing CCM stacking materials. The second material frame 3 and the blanking area 10 are respectively positioned at two sides of the other end of the machine 100.
The GDL feeding device 2 is used for sucking GDL materials in the first material frame A11 onto the working platform A51; and sucking the GDL material in the first material frame B12 onto the work platform B52. The CCM feeding device is used for sucking the CCM material in the second material frame 3 onto the working platform B52 and carrying the prepared membrane electrode assembly to the blanking area 10.
The first platform moving module 61 and the second platform moving module 62 are arranged in parallel, in this embodiment, the first platform moving module 61 is sequentially divided into a GDL feeding station, a dispensing station and a CCM feeding station along the length direction of the first platform moving module 61, and the second platform moving module 62 is sequentially divided into a GDL feeding station, a dispensing station, a code spraying station and a overturning laminating station along the length direction of the second platform moving module 62.
The GDL feeding device 2 includes a GDL feeding mechanism 21, a first moving mechanism 22 that moves the GDL feeding mechanism 21, and a first image capturing apparatus that captures positioning marks on the GDL material. The CCM feeding device 4 comprises a second image acquisition device for shooting positioning marks on the CCM material. The dispensing mechanism 7 includes a visual positioning device for capturing the dispensing indicia on the GDL material.
GDL charging equipment 2, CCM charging equipment 4, first platform remove module 61, second platform remove module 62, point gum mechanism 7, upset laminating mechanism 8, ink jet numbering machine 9, first image acquisition device, second image acquisition device, vision positioner all are connected with the controller electricity.
The first image acquisition device shoots the GDL material to obtain azimuth information of the GDL material, and sends the azimuth information to the controller to be compared with the correct azimuth information of the GDL material prestored in the controller, and the controller controls the GDL feeding equipment 2 to rotate the GDL material according to the comparison result so as to correct the azimuth of the GDL material; after the azimuth correction, the device is placed on a working platform A51; next, the GDL feeding device 2 sucks a block of GDL material from the first frame B12, and after orientation correction, places it on the work platform B52.
The second image acquisition device photographs CCM materials to obtain azimuth information of the CCM materials, the azimuth information is sent to the controller to be compared with the right azimuth information of the CCM materials prestored in the controller, and the controller controls the CCM feeding equipment 4 to rotate the CCM materials according to the comparison result so as to correct the azimuth of the CCM materials.
The visual positioning device photographs the GDL material to obtain a dispensing starting point on the GDL material, the dispensing mechanism 7 is positioned to the dispensing starting point and moves according to the set dispensing track to respectively dispense the GDL material on the working platform A51 and the working platform B52.
The first platform moving module 61 is used for driving the working platform a51 to reciprocate between the GDL feeding device 2 and the CCM feeding device 4. The second platform moving module 62 is used for driving the working platform B52 to reciprocate between the GDL feeding device 2 and the CCM feeding device 4 (the CCM feeding device 4 in this embodiment also serves as a discharging mechanism for the finished membrane electrode assembly).
The controller controls the dispensing mechanism to dispense the GDL materials on the working platform A51 and the working platform B52, and when the GDL materials on the working platform A51 are dispensed, the controller controls the CCM feeding equipment 4 to absorb and attach a piece of CCM material to the GDL materials on the working platform B52, so that the GDL and CCM semi-finished products are obtained.
The controller controls the overturning attaching mechanism 8 to overturn the GDL material on the working platform A51 by 180 degrees, so that the GDL material on the working platform A51 is attached to the CCM material on the working platform B52 (namely, the CCM materials in the GDL and CCM semi-finished products).
After the membrane electrode assembly is attached, the controller controls the code spraying machine 9 to spray codes on the membrane electrode assembly;
after the code spraying is finished, the controller controls the CCM feeding equipment 4 to convey the prepared membrane electrode assembly to the blanking area 10.
Specifically, referring to fig. 2 to 5, the gdl feeding mechanism 21 includes a suction device 211 that generates suction force using the venturi effect, a first vacuum generator 212, a first vacuum suction multi-function plate 213, an ultrasonic detector 214, and a color scale sensor 215.
The suction device 211 and the first vacuum generator 212 are electrically connected with a controller; the suction device 211 is opened to blow out high-speed fluid, low pressure is generated near the fluid flowing at high speed, the low pressure can enable gases in different directions to pass through the GDL stacks, the GDL stacks are separated from each other, and GDL materials on the top are adsorbed to the first vacuum suction multi-function plate 213 under the action of suction force; when the material is adsorbed to the first vacuum suction multi-function plate 213, the first vacuum generator 212 is turned on, sucking the GDL material flat; and at the same time closes the suction means 211.
The ultrasonic detector 214 has a probe 2141 capable of transmitting ultrasonic pulses, and a receiver 2142 for receiving the ultrasonic pulses, which pass through the measured GDL material in the thickness direction of the measured material, and then enter the receiver 2142, and the thickness of the measured GDL material can be determined by measuring the time of propagation of the ultrasonic pulses in the measured material; the ultrasonic detector 214 transmits the thickness information of the measured GDL material to the controller, and the controller compares the thickness information with the thickness data of the single GDL material preset therein to determine whether or not a plurality of GDL materials are sucked. When the judgment result is that one sheet is obtained, the controller controls the first moving mechanism 22 to put the GDL material on the working platform A51 or the working platform B52; when the judging result is that more than two sheets are obtained, the controller controls the first vacuum generator 212 to be closed, and after the material is put into the material returning frame, the suction device 211 is restarted to perform suction operation, and if a plurality of sheets are sucked for many times, the alarm device alarms.
The color patch sensor 215 enables color patch detection by comparison to non-color patch areas; the color scale sensor includes a light source and a light receiver. The light source is arranged perpendicular to the measured material, the light receiver is arranged at an acute angle with the measured GDL material, and the colors are different because the materials of the positive and negative sides of the measured GDL material are different. The color code sensor 215 is electrically connected with the controller, the color code sensor 215 sends the detected color code information to the controller, and the controller compares the color code information with non-color code area data prestored in the controller so as to judge whether the front side and the back side of the sucked GDL material are correct; and if judging that the fault exists, putting the GDL material on the working platform A51 or the working platform B52 through the moving mechanism, and if judging that the fault exists, putting the GDL material in a stagnation area.
Referring to fig. 6 to 8, the CCM feeding apparatus 4 includes a suction mechanism 41 for sucking the CCM material and the membrane electrode assembly, and a second moving mechanism 42, where the second moving mechanism 42 is used for moving the suction mechanism 41. The suction mechanism 41 includes a second vacuum generator 411 and a second vacuum suction multi-function plate 412; the second vacuum generator 411 is mounted above the second vacuum suction multi-function plate 412.
The second moving mechanism 42 includes an X-axis moving module 421 for driving the suction mechanism 41 to move left and right, a Y-axis moving module 422 for driving the suction mechanism 41 to move forward and backward, a Z-axis moving module 423 for driving the suction mechanism 41 to move up and down, and an R-axis rotating module 424 for driving the suction mechanism 41 to rotate around the Z-axis.
The dispensing mechanism 7 comprises a dispensing X-axis manipulator, a dispensing Y-axis manipulator, a dispensing Z-axis manipulator and a glue injection valve. The glue injection valve is arranged on the dispensing Z-axis manipulator, and the X-axis manipulator, the dispensing Y-axis manipulator and the dispensing Z-axis manipulator are respectively used for enabling the glue injection valve to move left and right, front and back and up and down. The first platform moving module 61 and the second platform moving module 62 are used as dispensing Y-axis manipulators of the dispensing mechanism 7.
The fan filter unit is provided with a fan, a primary filter screen and an advanced filter screen. The fan sucks air from the top of the fan filter unit, filters the air through the primary filter screen and the advanced filter screen, and sends the filtered clean air out at a uniform speed on the whole air outlet surface.
Referring to fig. 9, the steps for preparing the membrane electrode assembly using the preparation system described above are as follows:
step S1, two types of GDL stacks (namely an anode GDL stack and a cathode GDL stack) are respectively placed into a first material frame A51 and a first material frame B52.
Step S2, placing the working platform A51 and the working platform B52 at a GDL feeding station, firstly sucking a piece of anode GDL material from a first material frame A11 by the GDL feeding equipment 2, photographing the anode GDL material by a first image acquisition device to obtain azimuth information of the anode GDL material, transmitting the azimuth information to a controller, comparing the azimuth information with correct GDL material azimuth information prestored in the controller, and controlling the GDL feeding equipment to rotate the anode GDL material by the controller according to a comparison result so as to correct the azimuth of the anode GDL material by the controller. After the correction is completed, the correction is put on a working platform A51; next, the GDL feeding apparatus 2 suctions a piece of cathode GDL material from the first frame B12, corrects the orientation of the cathode GDL material by the same method, and after the correction is completed, places it on the work table B52.
And S3, moving the working platform A51 and the working platform B52 to a dispensing station, photographing the GDL material by a visual positioning device to obtain a dispensing starting point on the GDL material, positioning the dispensing mechanism 7 to the dispensing starting point, moving according to a set dispensing track, and dispensing the anode GDL material and the cathode GDL material on the working platform A51 and the working platform B52 respectively.
Step S4, moving the working platform A51 to a CCM feeding station, moving the working platform B52 to a overturning and attaching station, sucking a block of CCM material from the second material frame 3 by the CCM feeding equipment 4, photographing the CCM material by the second image acquisition device to obtain azimuth information of the CCM material, transmitting the azimuth information to the controller, comparing the azimuth information with the right azimuth information of the CCM material prestored in the controller, and controlling the CCM feeding equipment to rotate the CCM by the controller according to a comparison result so as to correct the azimuth of the CCM material; after the orientation correction, the CCM material is stuck on the anode GDL material which is glued on the working plane B52, and GDL and CCM semi-finished products are obtained.
And S5, starting the overturning and attaching mechanism 8 to enable the GDL material on the working platform A51 to overturn for 180 degrees and attach with the CCM material on the working platform B52, so as to prepare the membrane electrode assembly.
And S7, moving the working platform B52 to a code spraying station, and moving the code spraying machine 9 to spray codes to the membrane electrode assembly on the working platform B.
And S8, moving the working platform B52 to the CCM feeding station again, and sucking the finished membrane electrode assembly product on the working platform B52 to the blanking area 10 by the CCM feeding equipment 4.
In summary, the preparation system of the present embodiment integrates the GDL feeding device 2, the CCM feeding device 4, the dispensing mechanism 7, the overturning attaching mechanism 8, and the inkjet printer 9. Each link in the production process of the membrane electrode assembly is automated, labor cost is reduced, production efficiency is improved compared with manual production, and the space layout of each mechanism and station of the system is reasonable, the whole structure is compact, and occupied space is small.
In addition, the preparation method optimizes the operation efficiency of the preparation system, can further improve the production efficiency, reduce the error rate and reduce the production cost of the membrane electrode assembly of the fuel cell.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. A preparation system of a membrane electrode assembly of a hydrogen fuel cell is characterized by comprising the steps of placing a GDL stack
The device comprises a first material frame for materials, GDL feeding equipment, a second material frame for placing CCM stacking, CCM feeding equipment, a working platform A, a working platform B, a first platform moving module, a second platform moving module, a glue dispensing mechanism, a turnover laminating mechanism, a code spraying machine and a controller; the first material frame comprises a first material frame A and a first material frame B which are respectively used for placing different types of GDL stacked materials; the GDL feeding equipment comprises a first image acquisition device for shooting a positioning mark on a GDL material, the CCM feeding equipment comprises a second image acquisition device for shooting the positioning mark on the CCM material, and the dispensing mechanism comprises a visual positioning device for shooting a dispensing mark on the GDL material;
the GDL feeding equipment, the CCM feeding equipment, the first platform moving module, the second platform moving module, the dispensing mechanism, the overturning and attaching mechanism, the code spraying machine, the first image acquisition device, the second image acquisition device and the visual positioning device are all electrically connected with the controller; the first image acquisition device, the second image acquisition device and the visual positioning device acquire marking information through photographing and then feed back to the controller for processing to obtain positioning data; the controller controls the GDL feeding equipment, the CCM feeding equipment and the dispensing mechanism to do corresponding movement according to the positioning data;
the GDL feeding equipment is used for sucking GDL materials in the first material frame A onto the working platform A; absorbing the GDL material in the first material frame B onto the working platform B; the CCM feeding equipment is used for sucking CCM materials in the second material frame onto the working platform B and conveying the prepared membrane electrode assembly to a blanking area;
the first platform moving module is used for driving the working platform A to enable the working platform A to reciprocate between the GDL feeding equipment and the CCM feeding equipment; the second platform moving module is used for driving the working platform B to enable the working platform B to reciprocate between the GDL feeding equipment and the CCM feeding equipment;
the controller controls the dispensing mechanism to dispense the GDL materials on the working platform A and the working platform B; after the dispensing of the GDL material on the working platform A is completed, the controller controls the CCM feeding equipment to absorb and attach a piece of CCM material to the GDL material of the working platform B to obtain a GDL and CCM semi-finished product,
the controller controls the overturning and attaching mechanism to overturn the GDL material on the working platform A by 180 degrees, so that the GDL on the working platform A and the CCM material on the working platform B are attached together;
after the membrane electrode assembly is attached, the controller controls the code spraying machine to spray codes on the membrane electrode assembly;
after the code spraying is finished, the controller controls the CCM feeding equipment to convey the prepared membrane electrode assembly to a blanking area;
the GDL feeding equipment comprises a GDL feeding mechanism and a first moving mechanism for moving the GDL feeding mechanism, wherein the GDL feeding mechanism comprises a suction device for generating suction by utilizing a Venturi effect, a first vacuum generator and a first vacuum suction multi-functional plate; the suction device and the first vacuum generator are electrically connected with the controller; the suction device is opened, high-speed fluid is blown out, low pressure is generated near the fluid flowing at high speed, the low pressure enables gases in different directions to pass through the GDL stacks, the GDL stacks are separated from each other, and GDL materials at the top are adsorbed to the first vacuum suction multi-functional plate under the action of suction force; when the material is adsorbed to the first vacuum suction multi-functional plate, the first vacuum generator is started to suck the GDL material flat; and simultaneously closing the suction means;
the GDL feeding mechanism further comprises a color code sensor, and the color code sensor realizes color code detection by comparing with a non-color code area; the color code sensor comprises a light source and a light receiver, wherein the light source is arranged perpendicular to the measured GDL material, the light receiver is arranged at an acute angle with the measured material, and the color is different because the materials of the positive surface and the negative surface of the measured GDL material are different, and the color code sensor is electrically connected with the controller; the color code sensor sends the detected color code information to the controller, and the controller compares the color code information with non-color code area data prestored in the controller so as to judge whether the sucked GDL material is correct or not; and if judging that the fault exists, putting the GDL material on the working platform A or the working platform B through the first moving mechanism, and if judging that the fault exists, putting the GDL material in a stagnation area.
2. The hydrogen fuel cell membrane electrode assembly manufacturing system according to claim 1 wherein the GDL loading mechanism further comprises an ultrasonic detector having a probe capable of transmitting ultrasonic pulses and a receiver for receiving the ultrasonic pulses, the ultrasonic pulses passing through the GDL material under test in a thickness direction of the GDL material under test and then entering the receiver, the thickness of the GDL material under test being determinable by measuring the time of propagation of the ultrasonic pulses in the material under test;
the ultrasonic detector sends thickness information of the detected GDL materials to the controller, and the controller compares the thickness information with thickness data of single GDL materials preset in the controller to judge whether more than two GDL materials are absorbed;
when the judgment result is that one sheet is obtained, the controller controls the first moving mechanism to put the GDL material on the working platform A or the working platform B; when the judging result is that more than two sheets are obtained, the controller controls the first vacuum generator to be closed, the suction device is restarted to perform suction operation after the GDL material is placed in the material returning frame, and if more than two sheets are sucked for multiple times, the alarm device alarms.
3. The hydrogen fuel cell membrane electrode assembly preparation system according to claim 1 wherein the CCM feeding device comprises a suction mechanism for sucking in CCM material and a membrane electrode assembly and a second moving mechanism for moving the suction mechanism; the suction mechanism comprises a second vacuum generator and a second vacuum suction multi-functional plate; the second vacuum generator is arranged above the second vacuum suction multi-functional plate.
4. The hydrogen fuel cell membrane electrode assembly manufacturing system according to claim 3, wherein the second moving mechanism comprises an X-axis moving module for driving the suction mechanism to move left and right, a Y-axis moving module for driving the suction mechanism to move forward and backward, a Z-axis moving module for driving the suction mechanism to move up and down, and an R-axis rotating module for driving the suction mechanism to rotate around the Z-axis.
5. The hydrogen fuel cell membrane electrode assembly preparation system according to claim 1 wherein the dispensing mechanism comprises a dispensing X-axis robot, a dispensing Y-axis robot, a dispensing Z-axis robot, and a glue injection valve; the first platform moving module and the second platform moving module are used as dispensing Y-axis mechanical arms of the dispensing mechanism.
6. The hydrogen fuel cell membrane electrode assembly preparation system according to claim 1 further comprising a blower filter set provided with a blower, a primary filter screen and an advanced filter screen; the fan sucks air from the top of the fan filter unit, filters the air through the primary filter screen and the advanced filter screen, and sends out the filtered clean air at a uniform speed on the whole air outlet surface.
7. The hydrogen fuel cell membrane electrode assembly manufacturing system according to claim 1, wherein the first stage moving module is arranged in parallel with the second stage moving module, and the first stage moving module is sequentially divided into a GDL feeding station, a dispensing station and a CCM feeding station along the length direction thereof; the second platform moving module is sequentially divided into a GDL feeding station, a dispensing station, a code spraying station and a turnover laminating station along the length direction of the second platform moving module.
8. A method of preparing a membrane electrode assembly using the preparation system of claim 7, comprising at least the steps of:
step S1, respectively placing two types of GDL stacked materials into a first material frame A and a first material frame B;
s2, placing a working platform A and a working platform B at a GDL feeding station, firstly absorbing a piece of GDL material from a first material frame A by GDL feeding equipment, photographing the GDL material by a first image acquisition device to obtain orientation information of the GDL material, transmitting the orientation information to a controller, comparing the orientation information with correct GDL material orientation information prestored in the controller, and controlling the GDL feeding equipment to rotate the GDL material by the controller according to a comparison result so as to correct the orientation of the GDL material by the controller; after azimuth correction, the bearing is placed on a working platform A; then, the GDL feeding equipment absorbs a GDL material from the first material frame B, and places the GDL material on the working platform B after azimuth correction;
step S3, moving the working platform A and the working platform B to a dispensing station, photographing the GDL material by a visual positioning device to obtain a dispensing starting point on the GDL material, positioning a dispensing mechanism to the dispensing starting point, moving according to a set dispensing track, and dispensing the GDL material on the working platform A and the working platform B respectively;
step S4, moving the working platform A to a CCM feeding station, moving the working platform B to a turnover laminating station, sucking a block of CCM material from a second material frame by the CCM feeding equipment, photographing the CCM material by a second image acquisition device to obtain azimuth information of the CCM material, transmitting the azimuth information to a controller, comparing the azimuth information with correct azimuth information of the CCM material prestored in the controller, and controlling the CCM feeding equipment to rotate CCM according to a comparison result by the controller so as to correct the azimuth of the CCM material; after azimuth correction, the CCM material is stuck to the GDL material on the working platform B, so as to obtain a GDL and CCM semi-finished product;
s5, starting a turnover attaching mechanism to enable the GDL material on the working platform A to turn over 180 degrees and attach with the CCM material on the working platform B to obtain a membrane electrode assembly;
step S6, moving the working platform B to a code spraying station, and moving a code spraying machine to spray codes to the membrane electrode assembly on the working platform B;
and S7, moving the working platform B to the CCM feeding station again, and sucking the finished membrane electrode assembly product on the working platform B to a blanking area by the CCM feeding equipment.
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