CN111229555A

CN111229555A - Fuel cell membrane coating device

Info

Publication number: CN111229555A
Application number: CN202010149608.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu hydrogen guide intelligent equipment Co.,Ltd.
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-06-05

Abstract

The invention relates to a fuel cell membrane coating device, wherein a proton membrane cut into sheet materials can be placed on a micropore suction plate from a feeding station and is absorbed. The circulating servo mechanism drives the adsorption operation mechanism to move along a circulating path, and the proton membrane passes through a coating station and a drying station to realize the coating and drying of the catalyst on the surface. And finally, taking down the proton membrane coated with the catalyst from a blanking station to obtain the CCM. In the circulation path, a plurality of steps can be performed simultaneously for different proton membranes without interfering with each other. Moreover, the plurality of adsorption operation mechanisms reciprocate circularly, and the beat is compact. Therefore, the fuel cell membrane coating device can effectively improve the production efficiency of CCM.

Description

Fuel cell membrane coating device

Technical Field

The invention relates to the technical field of fuel cell processing, in particular to a fuel cell membrane coating device.

Background

In the production process of the fuel cell, one very central step is to coat the fuel cell catalyst on both sides of the proton exchange membrane to prepare a catalyst/proton exchange membrane assembly, namely ccm (catalyst coated membrane). At present, CCM is produced by spray coating, transfer printing, or the like.

The spraying quality and the spraying boundary of the spraying method are difficult to be stably controlled, and the method is not suitable for automatic production and preparation. The catalyst is coated on the transfer printing film by the transfer printing method, and then the transfer printing film is bonded on the proton exchange membrane, so that the swelling problem of the proton exchange membrane is avoided, but the process route is slightly complicated. Therefore, the production efficiency of the CCM is low at present.

Disclosure of Invention

In view of this, it is necessary to provide a fuel cell membrane coating apparatus capable of improving the productivity of CCM, in order to solve the problem of low productivity.

A fuel cell membrane coating apparatus (10), comprising:

the bearing mechanism (100) is provided with a circulating path, and a plurality of stations are sequentially arranged along the extending direction of the circulating path;

a plurality of adsorption operation mechanisms (200) which are slidably arranged on the bearing mechanism (100) and are arranged at intervals along the extension direction of the circulating path, wherein each adsorption operation mechanism (200) comprises a microporous adsorption plate (210) for adsorbing a sheet material proton membrane (20); and

a circulation servo mechanism (300) for driving the plurality of adsorption operation mechanisms (200) to synchronously circulate along the circulation path;

the station comprises a feeding station (101), a coating station, a drying station and a blanking station (107).

In one embodiment, the method further comprises the following steps:

the transmission mechanism (400) is in transmission connection with the circulating servo mechanism (300) and can reciprocate under the driving of the circulating servo mechanism (300), and the transmission mechanism (400) can be linked with or disconnected with the adsorption operation mechanisms (200) in an operable mode;

a plurality of movable air receiving assemblies (500) arranged on the transmission mechanism (400), wherein the plurality of movable air receiving assemblies (500) can be in butt joint or disconnection with air receiving ports corresponding to the adsorption operation mechanism (200) in an operable way;

the fixed air receiving assemblies (600) are arranged on the bearing mechanism (100), and the fixed air receiving assemblies (600) and the movable air receiving assemblies (500) are alternatively butted or disconnected with air receiving ports of the adsorption operation mechanisms (200).

In one embodiment, each of the adsorption operation mechanisms (200) is provided with a transmission block (250), and the transmission mechanism (400) includes:

a movable base plate (410) slidably mounted to the carriage mechanism (100);

the lifting plate (420) is arranged on the movable bottom plate (410) and can lift relative to the movable bottom plate (410), and a plurality of followers (421) used for being clamped with the transmission clamping blocks (250) are arranged on the lifting plate (420);

the jacking cylinder (430) is mounted on the movable bottom plate (410), is in transmission connection with the jacking plate (420), and is used for driving the jacking plate (420) to lift relative to the movable bottom plate (410) until the follower (421) is clamped with or separated from the transmission fixture block (250);

the plurality of movable air receiving assemblies (500) are mounted on the jacking plate (420), and along with the clamping or separation of the follower (421) and the transmission clamping block (250), the plurality of movable air receiving assemblies (500) are synchronously butted with or disconnected from air receiving ports of the plurality of adsorption operation mechanisms (200).

In one embodiment, a first air connector (800) is arranged at an air connecting port of the adsorption operation mechanism (200), the movable air connecting assembly (500) and the fixed air connecting assembly (600) both comprise a second air connector (900) for being connected with the first air connector (800), and the first air connector (800) is conducted when being connected with the second air connector (900) and is closed when being disconnected with the second air connector (900).

In one embodiment, the first gas joint (800) comprises:

the sealing structure comprises a hollow outer sealing sleeve (810), wherein an air outlet air passage (801) is formed inside the hollow outer sealing sleeve (810), the outer sealing sleeve (810) is provided with a first sealing surface (811), and a first air hole (802) communicated with the air outlet air passage (801) is formed in the first sealing surface (811);

a sealing ejector rod (820) slidably mounted in the outer sealing sleeve (810);

the first elastic piece (830) is contained in the outer sealing sleeve (810) and provides pretightening force for the sealing ejector rod (820), and the sealing ejector rod (820) abuts against the inner wall of the outer sealing sleeve (810) under the action of the pretightening force to seal the first air hole (802).

In one embodiment, an inner guide sleeve (812) is formed in the outer sleeve (810), the sealing ejector rod (820) is slidably arranged through the inner guide sleeve (812), and the first elastic member (830) is a compression spring which is sleeved on the sealing ejector rod (820) and clamped between the side wall of the inner guide sleeve (812) and the sealing ejector rod (820).

In one embodiment, the second gas joint (900) comprises:

the air receiving block (910) is internally provided with an air inlet channel (901), the air receiving block (910) is provided with a second sealing surface (911) which is in sealing fit with the first sealing surface (811), and the second sealing surface (911) is provided with a second air hole (902) communicated with the air inlet channel (901);

and the ejector pin (920) is arranged on the air receiving block (910), and when the second sealing surface (911) is in sealing fit with the first sealing surface (811), the ejector pin (920) is abutted against the sealing ejector rod (820) so as to open the first air hole (802).

In one embodiment, the second air connector (900) further includes an air receiving base (930), the air receiving block (910) is telescopically mounted on the air receiving base (930), a second elastic member (940) is clamped between the air receiving base (930) and the air receiving block (910), and the thimble (920) is fixed on the air receiving base and slidably penetrates through the air receiving block (910).

In one embodiment, an air receiving guide rod (931) is disposed on the air receiving base (930), the air receiving block (910) is sleeved on the air receiving guide rod (931), and the second elastic member (940) is a spring sleeved on the air receiving guide rod (931).

In one embodiment, the fixed air receiving assembly (600) further comprises a fixed air cylinder (610), and the second air connector (900) is mounted on the fixed air cylinder (610) and extends and retracts under the driving of the fixed air cylinder (610) so as to be connected with or disconnected from the first air connector (800).

In one embodiment, the adsorption operation mechanism (200) further comprises a fixing plate (220), and the microporous suction plate (210) is mounted on the fixing plate (220) and elastically supported with the fixing plate (220) so that the microporous suction plate (210) can rise and fall with respect to the fixing plate (220).

In one embodiment, the fixing plate (220) is provided with a plurality of limiting columns (222), the microporous suction plate (210) is sleeved on the plurality of limiting columns (222), and each limiting column (222) is sleeved with a jacking spring (230) clamped between the microporous suction plate (210) and the fixing plate (220).

In one embodiment, the adsorption operation mechanism (200) further includes a middle support assembly (240) disposed between the plurality of limiting columns (222), the middle support assembly (240) includes a linear bearing (241) disposed on the fixing plate (220), a support guide rod (243) slidably disposed through the linear bearing (241), and a rod end spherical joint bearing (242) fixing the support guide rod (243), and a spherical end of the rod end spherical joint bearing (242) is mounted on the micro-pore suction plate (210).

In one embodiment, the plane correcting mechanism (700) is further included, the plane correcting mechanism (700) comprises a plurality of guide wheels (710) arranged at two sides of the circulating path, and the guide wheels (710) can jointly define a lower tangent plane tangent to the guide wheels (710).

In one embodiment, the plane correcting mechanism (700) further comprises a correcting bracket (720) fixed on the bearing mechanism (100), a plurality of the correcting wheels (710) are arranged on the correcting bracket (720) on each side, and each of the correcting wheels (710) is mounted on the correcting bracket (720) through an eccentric shaft (730).

The proton membrane cut into sheet materials can be placed on the micropore suction plate from the feeding station and is absorbed by the proton membrane. The circulating servo mechanism drives the adsorption operation mechanism to move along a circulating path, and the proton membrane passes through a coating station and a drying station to realize the coating and drying of the catalyst on the surface. . And finally, taking down the proton membrane coated with the catalyst from a blanking station to obtain the CCM. In the circulation path, a plurality of steps can be performed simultaneously for different proton membranes without interfering with each other. Moreover, the plurality of adsorption operation mechanisms reciprocate circularly, and the beat is compact. Therefore, the fuel cell membrane coating device can effectively improve the production efficiency of CCM.

Drawings

FIG. 1 is a front view of a fuel cell membrane coating apparatus in accordance with a preferred embodiment of the present invention;

FIG. 2 is a side view of the fuel cell membrane coating apparatus shown in FIG. 1;

FIG. 3 is a top view of the fuel cell membrane coating apparatus shown in FIG. 1;

FIG. 4 is a schematic view of a partial installation of the fuel cell membrane application apparatus of FIG. 1;

FIG. 5 is a schematic view of a partial installation of the fuel cell membrane application assembly of FIG. 3;

FIG. 6 is a front view of an adsorption operation mechanism in the fuel cell membrane coating apparatus shown in FIG. 1;

FIG. 7 is a side view of the suction operation mechanism shown in FIG. 6;

FIG. 8 is a simplified structural schematic diagram of the adsorption operation mechanism shown in FIG. 6;

fig. 9 is a partial sectional view of the adsorption operation mechanism shown in fig. 8;

FIG. 10 is a schematic view of a first gas connection in the fuel cell membrane coating apparatus of FIG. 1;

FIG. 11 is a schematic diagram of a second gas connection in the fuel cell membrane coating apparatus of FIG. 1;

FIG. 12 is a side view of a fuel cell membrane coating apparatus according to another embodiment of the present invention;

fig. 13 is a partial top view of the fuel cell membrane application apparatus shown in fig. 12.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a fuel cell membrane coating apparatus 10 according to a preferred embodiment of the present invention includes a supporting mechanism 100, an adsorption operation mechanism 200, and a cyclic servo mechanism 300. The fuel cell membrane coating apparatus 10 is used to coat a catalyst on both sides of a proton membrane 20 of a pellet to obtain a CCM assembly of a fuel cell. Wherein:

the supporting mechanism 100 is a frame structure formed by welding metal plates and pipes. The carriage mechanism 100 has a circulation path (not shown) formed therein. During processing, the proton membrane 20 may be circulated along the circulation path. The circulation path is generally circular. Specifically, the carriage mechanism 100 is provided with an endless guide rail 110, and the aforementioned circulation path is formed by the guide rail 110. The guide rails 110 are divided into two rows, and the two rows of guide rails are juxtaposed to each other.

Furthermore, a plurality of stations are sequentially arranged along the extending direction of the circulating path. And each station is provided with corresponding equipment to realize corresponding functions. Specifically, the stations include a feeding station 101, a coating station, a drying station, and a discharging station 107. The catalyst coating may be performed on the surface of the proton membrane 20 at a coating station, and the catalyst coating may be performed on the surface of the proton membrane 20 at a drying station.

For CCM production, the coating stations include a first coating station 102, a second coating station 105; the drying stations include a first drying station 103 and a second drying station 106. Moreover, the above-mentioned stations also comprise a turning station 104 located between the first drying station 103 and the second coating station 105.

Correspondingly, the loading station 101 and the unloading station 107 can be provided with a transfer sucker for sucking the proton membrane 20 of the sheet material; the first drying station 103 and the second coating station 105 may be configured with a coating device for coating a catalyst on the surface of the proton membrane 20; the turning station 104 may be provided with a turning and transferring device for turning over the proton membrane 20 and then placing the proton membrane again; the first drying station 103 and the second drying station 106 may be configured with a drying device for drying the catalyst on the surface of the proton membrane 20.

During processing, the proton membrane 20 flows along the feeding station 101, the first coating station 102, the first drying station 103, the turning station 104, the second coating station 105, the second drying station 106 and the blanking station 107 in sequence along the production line, so that catalyst coating on two surfaces is realized, and a CCM assembly of the fuel cell is obtained.

Specifically, in this embodiment, the turning station 104 includes a turning and reclaiming station 1014 and a turning and discharging station 1042. Therefore, the material taking and discharging are at two different stations during the process of turning over the proton membrane 20. That is to say, after the material is got to the equipment that turns over is carried in the transfer, whole assembly line can continue to operate, and need not wait for proton membrane 20 to turn over in place and at the blowing of former station to can accelerate circulation rhythm, promote production efficiency.

It should be noted that other types of stations may be provided depending on the different processing requirements. Moreover, the coverage areas of different stations can be different according to the time consumption difference of different processes. For example, the drying time is long. Therefore, the first drying station 103 and the second drying station 106 are wider in the extending direction along the circulation path. Therefore, the surface of the proton membrane 20 can be fully dried while the flowing speed of the assembly line is ensured.

The adsorption operation mechanism 200 is a plurality of mechanisms, and is used for carrying a plurality of proton membranes 20 of sheet materials, and transferring the proton membranes 20 which are synchronously driven along the circulation path among the stations. Further, each adsorption operation mechanism 200 includes a microporous adsorption plate 210, and the microporous adsorption plate 210 is used for adsorbing the sheet proton membrane 20. The micro-porous suction plate 210 has a cavity, and the cavity is communicated with the adsorption hole on the surface of the micro-porous suction plate 210, and negative pressure can be generated by vacuumizing the cavity, so that the proton membrane 20 is adsorbed.

The micro porous suction plate 210 may be a ceramic plate, the surface of which is smooth. Therefore, the surface of the microporous suction plate 210 can be tightly sealed with the proton membrane 20, so as to prevent air leakage and effectively avoid scratching the proton membrane 20. Furthermore, the microporous suction plate 210 generally comprises a porous ceramic plate and a substrate formed of 99 alumina ceramic. The 99 alumina ceramic has the characteristics of wear resistance and corrosion resistance, and has high mechanical strength, so that the reliability of the microporous suction plate 210 can be improved. Moreover, since the two parts of the micro-porous suction plate 210 are made of ceramics and have similar thermal expansion coefficients, the micro-porous suction plate will not be cracked due to heating in the drying process.

Further, the suction operation mechanisms 200 are slidably mounted to the carrier mechanism 100 and are provided at intervals along the extending direction of the loop circulation path. Specifically, the suction operation mechanism 200 is provided with a slider 221, and the slider 221 is matched with the guide rail 110 to realize that the suction operation mechanism 200 is slidably mounted. The plurality of suction operation mechanisms 200 may be arranged at equal intervals or in parallel. In order to further improve the production efficiency, in the process that a plurality of adsorption operation mechanisms 200 are circulated along the circulating path, each station is ensured to correspond to at least one adsorption operation mechanism 200 at any moment, so that each station is free from idle.

Referring to fig. 6 and 7, in the present embodiment, the adsorption operation mechanism 200 further includes a fixing plate 220, and the microporous suction plate 210 is mounted on the fixing plate 220 and elastically supported with the fixing plate 220, so that the microporous suction plate 210 can move up and down with respect to the fixing plate 220.

Specifically, the fixing plate 220 and the micro-porous suction plate 210 are stacked and spaced from each other, and projections of the fixing plate and the micro-porous suction plate at least partially overlap. In addition, for convenience of layout, the fixing plate 220 and the micro-porous suction plate 210 in the present embodiment are both rectangular plate-shaped structures. Wherein, the sliding block 221 is disposed on the fixing plate 220.

The micro-porous suction plate 210 floats due to the elastic support between the micro-porous suction plate 210 and the fixing plate 220. Under pressure, the micro-porous suction plate 210 may exhibit undulations relative to the fixed plate 220. Therefore, in the actual processing process, the parallelism of the through-micro-pore suction plate 210 can be adjusted, so that the proton membrane 20 carried on the through-micro-pore suction plate can be kept parallel to the coating head 30 of the extrusion coating device, and the coating quality can be ensured.

Further, in the present embodiment, a plurality of limiting columns 222 are disposed on the fixing plate 220, the micro-porous suction plate 210 is sleeved on the plurality of limiting columns 222, and each limiting column 222 is sleeved with a jacking spring 230 clamped between the micro-porous suction plate 210 and the fixing plate 220.

The position-limiting column 222 may be integrally formed with the fixing plate 220, or may be embedded in or screwed to the fixing plate 220. The micro-porous suction plate 210 may have a corresponding guide hole (not shown), and the position-limiting post 222 penetrates through the corresponding guide hole and can extend and retract within a certain range along the guide hole. Meanwhile, the jacking spring 230 provides an elastic force to elastically support the micro-porous suction plate 210. Thus, the micro-porous suction plate 210 can float relative to the fixing plate 220 and can be kept stable in the transverse direction under the limiting action of the limiting column 222. That is, the limiting posts 222 can prevent the micro-porous suction plate 210 from swinging laterally to avoid deviating from the corresponding station.

In addition, the position-limiting columns 222 can be integrally formed with the micro-porous suction plate 210 or fixed on the micro-porous suction plate 210, the fixing plate 220 can be provided with corresponding guide holes, and the position-limiting columns 222 penetrate through the corresponding guide holes and can extend and retract within a certain range along the guide holes.

It should be noted that in other embodiments, the micro-porous suction plate 210 may be elastically supported by the fixing plate 220 in other ways to achieve floating. For example, an elastic pad is sandwiched between the micro-porous suction plate 210 and the fixing plate 220, and both sides of the elastic pad are bonded to the micro-porous suction plate 210 and the fixing plate 220, respectively. Or, the micro-porous suction plate 210 and the fixed plate 220 are connected by a transverse U-shaped elastic sheet.

Further, referring to fig. 8 and 9, in the present embodiment, the adsorption operation mechanism 200 further includes a middle support assembly 240 disposed between the plurality of limiting columns 222. The middle support assembly 240 includes a linear bearing 241, a rod end spherical joint bearing 242, and a support guide 243.

The linear bearing 241 is provided to the fixing plate 220. Specifically, the linear bearing 241 may be embedded in the fixing plate 220. The support guide rod 243 is slidably disposed through the linear bearing 241, and the rod end spherical joint bearing 242 is fixedly connected to the support guide rod 243. Also, the spherical end of the rod end spherical knuckle bearing 242 is mounted to the micro-orifice suction plate 210. As the micro-porous suction plate 210 moves up and down, the support rod 243 can drive the rod end spherical joint bearing 242 to extend and retract along the linear bearing 241. Moreover, the middle supporting component 240 can provide a pivot for the micro-porous suction plate 210, when one side of the micro-porous suction plate is higher and the other side of the micro-porous suction plate is lower, the lower side of the micro-porous suction plate can be tilted by pressing the higher side of the micro-porous suction plate, and the parallelism of the micro-porous suction plate 210 can be adjusted conveniently.

Specifically, the micro-pore suction plate 210 is provided with a mounting block 211, and the pin 244 passes through the mounting block 211 and the spherical end to realize hinging. Therefore, the support guide 243 is restricted from rotating along its own axis, and the transverse stability of the microporous suction plate 210 is ensured.

In addition, the adsorption transfer mechanism 200 further includes a rotation stopping assembly 260. The rotation stopping assembly 260 includes a rotation stopping protrusion 261 disposed on the micro-porous suction plate 210 and a rotation stopping clamping block 263 disposed on the surface of the fixing plate 220. The rotation stop protrusion 261 is clamped in the rotation stop clamping block 263, so as to further limit the rotation of the micro-porous suction plate 210 relative to the fixing plate 220.

The parallelism adjustment of the micro-porous suction plate 210 can be realized by external equipment, and can also be realized by arranging corresponding equipment on the fuel cell membrane coating device 10. Such as:

referring to fig. 12 and 13, in another embodiment, the fuel cell membrane coating apparatus 10 further includes a planar alignment mechanism 700. The plane calibration mechanism 700 is used for matching with the adsorption transfer mechanism 200 to realize plane calibration, and can automatically calibrate the parallelism of the surface of the microporous suction plate 210 so as to keep the parallelism of the coating head 30 of the extrusion coating equipment.

The plane correcting mechanism 700 includes a plurality of aligning wheels 710 disposed at two sides of the circulating path, and the aligning wheels 710 can jointly define an undercut plane tangent to the aligning wheels 710. The lower tangent plane is a virtual plane, and is located on a side of the plurality of the polarization wheels 710 facing the carrying mechanism 100 and tangent to the rolling surfaces of the plurality of the polarization wheels 710.

In the initial state, the coating head 30 of the extrusion coating apparatus can be adjusted to be parallel to the undercut surface by calibration. In addition, the heights of the plurality of alignment wheels 710 are designed in advance such that the micro-porous suction plate 210 can be pressed against the alignment wheels 710 when the adsorption transfer mechanism 200 passes through the planar alignment mechanism 700. Thus, even if the microporous suction plate 210 is inclined to some extent during the circulation, the surface of the microporous suction plate 210 is overlapped with the undercut surface by the pressing of the aligning roller 710, thereby ensuring that the coating head 30 and the surface of the microporous suction plate 210 are parallel.

The position and height of the plurality of polarization wheels 710 may be fixed or adjustable. Specifically, in the present embodiment, the plane calibration mechanism 700 further includes a calibration bracket 720 and an eccentric shaft 730. The correcting bracket 720 is fixed to the carrying mechanism 100 and distributed at both sides of the circulating path, a plurality of aligning wheels 710 are provided on the correcting bracket 720 at each side, and each aligning wheel 710 is mounted on the correcting bracket 720 through an eccentric shaft 730.

The calibration bracket 720 may be erected on the carrier 100 by welding, screwing, or the like. The eccentric shaft 730 may be locked by a jackscrew. The height of the corresponding guide wheel 710 can be adjusted by loosening the jackscrew and rotating the eccentric shaft 730. The flow of the plane calibration performed by the plane calibration mechanism 700 is roughly as follows:

firstly, arranging a calibration plate; by rotating the eccentric shaft 730, the plurality of the polarization wheels 710 are all pressed onto the calibration plate, thereby jointly defining a lower tangent plane; pressing the coating head 30 on the calibration plate to make the coating head 30 and the lower tangent plane located on the same plane; and then vertically moving the coating head 30 up for a certain distance to ensure that the coating head 30 is parallel to the lower cutting surface.

The circulation servo mechanism 300 is used for driving the plurality of adsorption operation mechanisms 200 to synchronously move circularly along the circulation path. The circulating servo mechanism 300 can be in communication connection with an upper computer, and the upper computer controls the running time and frequency of the circulating servo mechanism 300 so as to be matched with the machining procedures of all stations. Specifically, in the present embodiment, the circulation servo 300 is a structure in which a motor is engaged with a ball screw pair. Obviously, the cyclic servo 300 may be a structure in which a motor is coupled to a pulley.

Furthermore, the cyclic servo mechanism 300 generally drives the plurality of adsorption operation mechanisms 200 to move in a stepping manner, and the gap between two movements allows each station to perform a corresponding process. The step distance of the stepping movement is generally equal to the minimum distance between two stations.

After the fuel cell membrane coating apparatus 100 is started, the microporous suction plate 210 needs to continuously circulate along the circulation path. In order to maintain the adsorption capacity, the microporous suction plate 210 is always evacuated. At this moment, the traditional vacuumizing mode is inconvenient for the air pipe to be connected, and the requirement cannot be met. Therefore, the following is adopted in the present application:

referring to fig. 4 and 5, in the present embodiment, the fuel cell membrane coating apparatus 10 further includes a transmission mechanism 400, a plurality of movable air receiving assemblies 500, and a plurality of fixed air receiving assemblies 600.

The transmission mechanism 400 is in transmission connection with the cyclic servo mechanism 300 and can reciprocate under the driving of the cyclic servo mechanism 300. That is, the transmission mechanism 400 does not move circularly along the circular path, but reciprocates back and forth in a small range. Further, the transmission mechanism 400 is operatively coupled to or decoupled from the plurality of adsorption operation mechanisms 200. The steps of the transmission mechanism 400 driving the adsorption operation mechanism 200 to circulate along the circulation path are as follows:

when the transmission mechanism 400 is linked with the adsorption operation mechanism 200, the rotation mechanism 400 can drive the adsorption operation mechanism 200 to move a preset distance (generally, a length of one station) along the circulation path; after the movement to the right position, the driving mechanism 400 is disconnected from the adsorption operation mechanism 200 and retreats, and the adsorption operation mechanism 200 does not retreat together with the driving mechanism 400. Repeating the above steps for a plurality of times, a plurality of adsorption operation mechanisms 200 can complete the circulation, and the position of the transmission mechanism 400 is always kept within the range of one station length.

A plurality of movable air-receiving assemblies 500 are mounted to the transmission mechanism 400. Also, the plurality of movable air-receiving assemblies 500 may be operatively docked or undocked with the air-receiving ports of the corresponding adsorbent run mechanisms 200. The number of the movable air receiving assemblies 500 is generally the same as the number of the adsorption operation mechanisms 200, and each movable air receiving assembly 500 corresponds to one adsorption operation mechanism 200 and can be used for realizing vacuum pumping for the corresponding microporous suction plate 210.

Specifically, when the transmission mechanism 400 is linked with the adsorption operation mechanism 200, the movable air receiving assembly 500 can be operated to be in butt joint with the air receiving port of the adsorption operation mechanism 200, so that the movable air receiving assembly 500 can be operated to perform vacuum pumping. When the transmission mechanism 400 is retracted, the movable air receiving assembly 500 is operated to be disconnected from the air receiving port of the adsorption operation mechanism 200. Thus, the movable air receiving assembly 500 can synchronously reciprocate along with the transmission mechanism 400, and the position of the movable air receiving assembly is always kept within the range of the length of one station, so that the air pipe can be conveniently accessed and the air pipe is prevented from being wound.

A plurality of fixed air-receiving assemblies 600 are mounted to the carrying mechanism 100, and their positions can be maintained. Moreover, the number of the fixed air-receiving assemblies 600 is generally the same as the number of the adsorption operation mechanisms 200, and each fixed air-receiving assembly 600 corresponds to one adsorption operation mechanism 200 and can be used for implementing vacuum-pumping for the corresponding microporous suction plate 210. The structure and function of the fixed air receiving assembly 600 may be identical to those of the movable air receiving assembly 500. Wherein, a plurality of fixed gas components 600 that connect distribute respectively in a plurality of stations respectively generally for the absorption operation mechanism 200 evacuation on the corresponding station. Specifically, the fixed air-receiving assembly 60 may be disposed between two rows of the guide rails 110.

Further, the plurality of fixed air receiving assemblies 600 and the plurality of movable air receiving assemblies 500 are alternately connected to or disconnected from the air receiving ports of the plurality of adsorption operation mechanisms 200. That is, when the plurality of movable air receiving assemblies 500 are butted against the air receiving ports of the plurality of adsorption operation mechanisms 200, the plurality of fixed air receiving assemblies 600 are disconnected from the air receiving ports of the plurality of adsorption operation mechanisms 200; when the plurality of fixed air receiving assemblies 600 are in butt joint with the air receiving ports of the plurality of adsorption operation mechanisms 200, the plurality of movable air receiving assemblies 500 are disconnected from the air receiving ports of the plurality of adsorption operation mechanisms 200.

When the transmission mechanism 400 is linked with the adsorption operation mechanism 200 to drive the adsorption operation mechanism 200 to move, the fixed gas receiving assembly 600 can be operated to disconnect from the gas receiving port of the adsorption operation mechanism 200, and the movable gas receiving assembly 500 performs a vacuum pumping operation. After the transmission mechanism 400 moves to the proper position, the fixed air receiving assembly 600 can be operated to be in butt joint with the air receiving port of the adsorption operation mechanism 200, and the fixed air receiving assembly 600 performs the vacuum pumping operation. It can be seen that the adsorption operation mechanism 200 is vacuumized by the movable air receiving assembly 500 during the moving process, and is vacuumized by the fixed air receiving assembly 600 when the adsorption operation mechanism is still at the working position, so that the adsorption operation mechanism can be always kept in a vacuum state.

In this embodiment, the adsorption operation mechanism 200 is provided with a transmission fixture block 250, and the transmission mechanism 400 includes a movable bottom plate 410, a lifting plate 420 and a lifting cylinder 430. Wherein:

the movable base plate 410 is slidably mounted to the carriage mechanism 100. Specifically, the movable floor 410 is elongated and extends along a portion of the circulation path. The movable base plate 410 can be connected to the supporting mechanism 100 by a sliding rail (not shown), and the sliding direction of the movable base plate coincides with the extending direction of the supporting mechanism. The movable bottom plate 410 is in transmission connection with the cyclic servo 300 and is driven by the cyclic servo 300.

The lifting plate 420 is installed on the movable base plate 410 and is liftable with respect to the movable base plate 410. Specifically, the lifting plate 420 is also generally elongated and aligned with the extending direction of the movable base plate 410. Further, the lifting plate 420 is provided with a plurality of followers 421 for engaging with the driving dogs 250. The transmission fixture block 250 is specifically disposed on the fixing plate 220. The plurality of followers 421 may be provided at intervals along the length direction of the lifting plate 420. The follower 421 engages with the transmission latch 250, so that the transmission mechanism 400 is linked with the adsorption operation mechanism 200.

The jacking cylinder 430 is installed on the movable bottom plate 410 and is in transmission connection with the jacking plate 420, and is used for driving the jacking plate 420 to ascend and descend relative to the movable bottom plate 410 until the follower 421 is engaged with or separated from the transmission fixture block 250. The lifting plate 420 is lifted and lowered to change the distance between the follower 421 and the transmission latch 250, thereby realizing the switching between the engaging and disengaging states. As shown in fig. 4, the lifting plate 420 may move in a horizontal direction with the movable base plate 410 and be lifted up and down in a vertical direction with respect to the movable base plate 410.

The plurality of movable air receiving assemblies 500 are mounted on the lifting plate 420, and as the follower 421 is engaged with or separated from the transmission fixture block 250, the plurality of movable air receiving assemblies 500 are synchronously engaged with or disengaged from the air receiving ports of the plurality of adsorption operation mechanisms 200.

Specifically, the plurality of movable air receiving assemblies 500 may also change the distance from the air receiving opening of the adsorption operation mechanism 200 as the lifting plate 420 is lifted. Moreover, through the design of position and height, when the jacking plate 420 extends and retracts until the follower 421 is engaged with the transmission fixture block 250, the plurality of movable air receiving assemblies 500 are just in butt joint with the air receiving ports of the adsorption operation mechanism 200. Therefore, the switching of the states of the active air-receiving assembly 500 and the follower 421 can be operated synchronously, which is convenient for saving time.

It should be noted that, in other embodiments, the transmission mechanism 400 may also take other forms to realize the switching of the linkage and disconnection state with the adsorption operation mechanism 200. Such as: the transmission mechanism 400 may be a synchronous belt, and the adsorption operation mechanism 200 is provided with a synchronous pulley. In addition, the transmission mechanism 400 further includes a stretching assembly that stretches the timing belt. In a normal state, the synchronous belt is disconnected with the synchronous belt wheel; when linkage is needed, the synchronous belt is unfolded through the unfolding component, and the outer side of the synchronous belt is meshed with the synchronous belt wheel, so that linkage is realized.

In this embodiment, the gas receiving port of the adsorption operation mechanism 200 is provided with a first gas joint 800, the movable gas receiving assembly 500 and the fixed gas receiving assembly 600 both include a second gas joint 900 for being butted with the first gas joint 800, and the first gas joint 800 is conducted when being butted with the second gas joint 900 and is closed when being disconnected from the second gas joint 900.

Specifically, the air inlet of the adsorption operation mechanism 200 is generally disposed on the fixing plate 220. Furthermore, the movable air receiving assembly 500 and the fixed air receiving assembly 600 are required to be connected with different air inlets. Therefore, at least two first air connectors 800 are installed on the surface of the fixing plate 220. As shown in fig. 6, two opposite edges of the fixing plate 220 are respectively provided with a first air connector 800 for the movable air receiving assembly 500 to be butted against, and the middle thereof is provided with a first air connector 800 for the fixed air receiving assembly 600 to be butted against.

As shown in fig. 5, in the present embodiment, the fixed air receiving assembly 600 further includes a fixed cylinder 610. The second air connector 900 is installed on the fixed cylinder 610 and extends and contracts under the driving of the fixed cylinder 610 to be connected with or disconnected from the first air connector 800.

Since the first air joint 800 is closed when being disconnected from the second air joint 900, it is possible to prevent the vacuum from being broken by the adsorption operation mechanism 200 when the movable air receiving unit 500 and the fixed air receiving unit 600 are alternated, thereby effectively ensuring the adsorption effect.

It should be noted that in other embodiments, the vacuum break may be avoided in other ways. Such as: an electromagnetic valve is arranged at the air connecting port, and vacuum is maintained by synchronously controlling the on-off state of the battery valve. In addition, the gas inlet of the adsorption operation mechanism 200 may be provided with a check valve, so that gas can only be discharged from the gas inlet but not enter the gas inlet, and the effect of keeping vacuum can also be achieved.

Further, referring to fig. 10 again, in the present embodiment, the first air joint 800 includes an outer sealing sleeve 810, a sealing top bar 820 and a first elastic element 830. Wherein:

the outer sealing sleeve 810 is a hollow structure, and an air outlet passage 801 is formed inside the outer sealing sleeve. One end of the air outlet passage 801 is communicated with the air receiving port of the adsorption operation mechanism 200. The outer sealing sleeve 810 has a first sealing surface 811, and the first sealing surface 811 is provided with a first air hole 802 communicated with the air outlet channel 801.

The seal carrier bar 820 is slidably mounted within the outer jacket 810. The first elastic element 830 is accommodated in the outer jacket 810 and provides a pre-tightening force to the sealing ejector pin 820, and the sealing ejector pin 820 abuts against the inner wall of the outer jacket 810 under the action of the pre-tightening force to close the first air hole 802.

Specifically, a step may be formed on the inner wall of the outer sealing sleeve 810 along the circumferential direction of the first air hole 802, and the end of the sealing plunger 820 abuts against the step to cover the first air hole 802. Furthermore, in order to improve the sealing effect, a sealing ring (not shown) is further provided at the end of the sealing rod 820. The first elastic member 830 may be a spring, a spring plate, or other elastic structure.

Specifically, in the present embodiment, an inner guide sleeve 812 is formed in the outer sleeve 810, the sealing push rod 820 slidably penetrates through the inner guide sleeve 812, and the first elastic member 830 is a compression spring sleeved on the sealing push rod 820 and clamped between the side wall of the inner guide sleeve 812 and the sealing push rod 820.

The inner guide 812 is open at one end and opens toward the first air hole 802. The sealing ejector pin 820 penetrates through the inner guide sleeve 812, so that the inner guide sleeve 812 can play a role in limiting and guiding, and the sealing ejector pin 820 can be kept stable. In addition, since the compression spring as the first elastic member 830 is sleeved on the sealing top bar 820, the compression spring can only extend or contract along with the extension and contraction of the sealing top bar 820, and the reliability is higher.

When the second air joint 900 is butted with the first air joint 800, the sealing ejector 820 is pushed back by adopting a protruding structure, and the conduction of the first air joint 800 can be realized. When the second air connector 900 is disconnected from the first air connector 800, the sealing ejector 820 seals the first air hole 802 under the action of the first elastic member 830, so as to disconnect the first air connector 800.

Referring to fig. 11, in the present embodiment, the second air connector 900 includes an air receiving block 910 and an ejector pin 920. Wherein:

the air receiving block 910 has an air inlet duct 901 formed therein, and one end thereof is used for communicating with a second air connector (not shown). The air receiving block 910 has a second sealing surface 911 hermetically engaged with the first sealing surface 811, and the second sealing surface 911 is opened with a second air hole 902 communicating with the air intake duct 901. When the first sealing surface 811 is in sealing engagement with the second sealing surface 911, the second air hole 902 communicates with the first air hole 802, thereby enabling the second air joint 900 to be butted against the first air joint 800.

In order to improve the sealing performance between the first sealing surface 811 and the second sealing surface 911, in the embodiment, a sealing ring (not shown) is embedded in the second sealing surface 911, and the sealing ring can abut against the first sealing surface 811.

The thimble 920 is installed on the air-receiving block 910, and when the second sealing surface 911 is in sealing engagement with the first sealing surface 811, the thimble 920 abuts against the sealing rod 820 to open the first air hole 802. Specifically, the thimble 920 may be fixed to the gas receiving block 910, or may be retractable with respect to the gas receiving block 910, as long as when the second sealing surface 911 is in sealing engagement with the first sealing surface 811, the thimble 920 protrudes from the second sealing surface 911, and the sealing rod 820 is pushed back.

Further, in this embodiment, the second air connector 900 further includes an air receiving base 930, the air receiving block 910 is telescopically mounted on the air receiving base 930, and a second elastic element 940 is clamped between the air receiving base 930 and the air receiving block 910, and the thimble 920 is fixed on the air receiving base 930 and slidably disposed through the air receiving block 910.

Specifically, the thimble 920 passes through the air-receiving block 910 and protrudes from the second air hole 902. When the gas receiving base 930 drives the second gas joint 900 to approach the first gas joint 800, the second sealing surface 911 and the first sealing surface 811 firstly contact and realize sealing; as the air-receiving base 930 continues to move, the second elastic member 940 is compressed and the distance between the air-receiving block 910 and the air-receiving base 930 is reduced. At this time, the thimble 920 and the air-receiving block 910 slide relatively until the thimble 920 extends into the first air hole 802 and pushes back the sealing rod 802. Therefore, before the thimble 920 conducts the first air joint 800, the second air joint 900 forms a seal with the first air joint 800, so that the vacuum of the adsorption operation mechanism 200 can be further prevented from being damaged.

Furthermore, in the present embodiment, the air-receiving base 930 is provided with an air-receiving guide rod 931, the air-receiving block 910 is sleeved on the air-receiving guide rod 931, and the second elastic element 940 is a spring sleeved on the air-receiving guide rod 931.

Specifically, the air receiving guide 931 may be integrally formed with the air receiving base 930, or may be fixed to the air receiving base 930 by being embedded or screwed. The air receiving block 910 may have a corresponding mounting hole (not shown), and the air receiving guide rod 931 penetrates the corresponding mounting hole and can extend and retract within a certain range along the mounting hole. At the same time, the spring provides a spring force that, when compressed, provides a holding force against the air bump 910 against the outer jacket 810. The air-receiving guide rod 931 can play a role in guiding and limiting, and can keep the relative position of the air-receiving block 910 and the air-receiving base 930 stable.

In the fuel cell membrane coating apparatus 10, the proton membrane 20 cut into sheet materials may be placed on the microporous suction plate 210 from the loading station 101 and may be adsorbed. The circulation servo mechanism 300 drives the adsorption operation mechanism 200 to move along a circulation path, and the proton membrane 20 passes through the coating station 1 and the drying station to realize the coating and drying of the catalyst on the surface. Finally, the catalyst coated proton membrane 20 is removed from the blanking station 107 to obtain a CCM. In the circulation path, a plurality of steps can be performed simultaneously for different proton membranes 20 without interfering with each other. Further, the plurality of adsorption operation mechanisms 200 are cyclically reciprocated, and the beats are compact. Therefore, the fuel cell membrane coating device 10 can effectively improve the production efficiency of CCM.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fuel cell membrane coating apparatus (10), comprising:

2. The fuel cell membrane coating device (10) according to claim 1, further comprising:

3. The fuel cell membrane coating device (10) according to claim 2, wherein each of said adsorption operation mechanisms (200) is provided with a transmission block (250), said transmission mechanism (400) comprising:

a movable base plate (410) slidably mounted to the carriage mechanism (100);

4. The fuel cell membrane coating device (10) according to claim 2, wherein the gas receiving port of the adsorption operation mechanism (200) is provided with a first gas joint (800), the movable gas receiving assembly (500) and the fixed gas receiving assembly (600) each comprise a second gas joint (900) for interfacing with the first gas joint (800), and the first gas joint (800) is conducted when interfacing with the second gas joint (900) and is closed when disconnecting from the second gas joint (900).

5. The fuel cell membrane coating device (10) according to claim 4, wherein said first gas joint (800) comprises:

a sealing ejector rod (820) slidably mounted in the outer sealing sleeve (810);

6. The fuel cell membrane coating apparatus (10) according to claim 5, wherein an inner guide sleeve (812) is formed in the outer seal sleeve (810), the seal ejector pin (820) is slidably disposed through the inner guide sleeve (812), and the first elastic member (830) is a compression spring sleeved on the seal ejector pin (820) and clamped between a side wall of the inner guide sleeve (812) and the seal ejector pin (820).

7. The fuel cell membrane coating device (10) according to claim 5, wherein said second gas connection (900) comprises:

8. The fuel cell membrane coating apparatus (10) according to claim 7, wherein the second air connector (900) further comprises an air receiving base (930), the air receiving block (910) is telescopically mounted on the air receiving base (930) and a second elastic member (940) is clamped between the air receiving base (930) and the air receiving block (910), and the thimble (920) is fixed on the air receiving base and slidably penetrates through the air receiving block (910).

9. The fuel cell membrane coating device (10) according to claim 8, wherein the air-receiving base (930) is provided with an air-receiving guide rod (931), the air-receiving block (910) is sleeved on the air-receiving guide rod (931), and the second elastic member (940) is a spring sleeved on the air-receiving guide rod (931).

10. The fuel cell membrane coating device (10) according to claim 4, wherein said fixed air-receiving assembly (600) further comprises a fixed cylinder (610), and said second air connector (900) is mounted on said fixed cylinder (610) and driven by said fixed cylinder (610) to extend and retract so as to be connected with or disconnected from said first air connector (800).

11. The fuel cell membrane coating apparatus (10) according to claim 1, wherein said adsorption operation mechanism (200) further comprises a fixing plate (220), and said micro-porous suction plate (210) is mounted to said fixing plate (220) and elastically supported with said fixing plate (220) so that said micro-porous suction plate (210) is undulatable with respect to said fixing plate (220).

12. The fuel cell membrane coating apparatus (10) according to claim 11, wherein a plurality of limiting columns (222) are disposed on the fixing plate (220), the micro-porous suction plate (210) is sleeved on the plurality of limiting columns (222), and each limiting column (222) is sleeved with a jacking spring (230) clamped between the micro-porous suction plate (210) and the fixing plate (220).

13. The fuel cell membrane coating apparatus (10) according to claim 12, wherein the adsorption operation mechanism (200) further includes a middle support assembly (240) disposed between the plurality of limiting columns (222), the middle support assembly (240) includes a linear bearing (241) disposed on the fixing plate (220), a support guide rod (243) slidably disposed through the linear bearing (241), and a rod end spherical joint bearing (242) fixing the support guide rod (243), and a spherical end of the rod end spherical joint bearing (242) is mounted on the micro-porous suction plate (210).

14. The fuel cell membrane coating apparatus (10) of claim 11, further comprising a planar alignment mechanism (700), said planar alignment mechanism (700) including a plurality of guide wheels (710) disposed on either side of said circulation path, said plurality of guide wheels (710) collectively defining a lower tangent plane tangential to said plurality of guide wheels (710).

15. The fuel cell membrane coating apparatus (10) according to claim 14, wherein said planar alignment mechanism (700) further comprises an alignment bracket (720) fixed to said carrier mechanism (100), a plurality of said alignment wheels (710) are provided on said alignment bracket (720) on each side, and each of said alignment wheels (710) is mounted on said alignment bracket (720) by an eccentric shaft (730).