Membrane electrode production equipment, preparation method and fuel cell production equipment

Abstract

The invention relates to membrane electrode production equipment, a preparation method and fuel cell production equipment, and belongs to the technical field of cell manufacturing. The membrane electrode production equipment comprises a frame providing device used for providing a finished product frame material belt, and the finished product frame material belt is provided with an active area opening; the adhesive layer providing device is used for providing a liquid adhesive layer for the surface of the finished frame material belt to form a frame composite material belt; the CCM providing device is used for providing a CCM sheet material; the compounding device is used for compounding the frame composite material belt and the CCM sheet material to form a first membrane electrode initial material belt; and the light source curing device is used for irradiating the first membrane electrode initial material belt, and the first membrane electrode material belt is formed after the adhesive layer is cured. The possibility of deformation of the CCM and the preparation cost of the membrane electrode are reduced, so that the preparation efficiency and the quality control precision of the membrane electrode are improved. The invention further provides fuel cell production equipment which comprises the membrane electrode production equipment. The invention also provides a preparation method of the membrane electrode.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a membrane electrode production device, a preparation method, and a fuel cell production device. Background Art

[0002] With the rapid development of the electric vehicle industry, the power battery industry is also developing rapidly, and higher requirements are put forward for the power performance and safety performance of power batteries. Among them, fuel cells have the advantages of low pollution, low noise, and high power generation efficiency, and are widely used in the field of electric vehicles.

[0003] Catalyst coated proton membrane (CCM) is an important component for preparing membrane electrode (MEA) of proton exchange membrane fuel cells. CCM and frame are bonded to form the first membrane electrode material strip, and then the diffusion layer is compounded to form the finished MEA product. However, hot pressing rollers are mainly used to bond CCM and frame by hot pressing and compounding, which greatly limits the efficiency of membrane electrode manufacturing. In order to overcome the deformation caused by the pressing process, it is necessary to introduce multiple layers of auxiliary membranes from the outside, which leads to low manufacturing cost of membrane electrode and low performance of fuel cell stack. Summary of the invention

[0004] To this end, the present application proposes a membrane electrode production device, a preparation method and a fuel cell production device, which reduce the possibility of CCM deformation and the preparation cost of the membrane electrode, and improve the preparation efficiency and quality control accuracy of the membrane electrode.

[0005] The membrane electrode production equipment of the first aspect of the present application embodiment includes: a frame providing device, used to provide a finished frame material strip, the finished frame material strip has an active area opening; a glue layer providing device, used to provide a liquid glue layer to the surface of the finished frame material strip to form a frame composite material strip; a CCM providing device, used to provide CCM sheets; a compounding device, used to compound the frame composite material strip and the CCM sheet, the CCM sheet is attached to the glue layer corresponding to the position of the active area opening to form a first membrane electrode initial material strip; a light source curing device, used to irradiate the first membrane electrode initial material strip, and the first membrane electrode material strip is formed after the glue layer is cured.

[0006] Optionally, the frame providing device includes: a frame unwinding mechanism for unwinding a frame material strip, the frame material strip including a stacked frame base film strip and an initial frame material strip; a frame drive roller assembly for driving the frame material strip to move forward; a frame cutting mechanism for cutting an active area opening on the initial frame material strip to form a finished frame material strip; and a frame winding mechanism for winding the frame base film strip.

[0007] Optionally, the membrane electrode production equipment further includes: a first conveyor belt, connected to the frame providing device to receive and convey the finished frame material belt.

[0008] Optionally, the CCM providing device includes: a CCM unwinding mechanism for unwinding the CCM coil material strip, the CCM coil material strip includes a stacked CCM transfer film strip, a CCM bottom film strip and a CCM strip; a CCM drive roller assembly for driving the CCM coil material strip to move; a CCM cutting mechanism for cutting the CCM bottom film strip and the CCM strip to form a CCM sheet, the CCM sheet includes a stacked CCM body and a CCM bottom film; a CCM winding mechanism for winding the CCM transfer film strip.

[0009] Optionally, the membrane electrode production equipment further comprises: a first visual recognition mechanism, which is arranged upstream of the adhesive layer providing device and is used to detect position information of the active area opening of the finished product frame material strip.

[0010] Optionally, the glue layer providing device includes: a glue dripping device, which is arranged downstream of the first visual recognition mechanism and is configured to drip glue around the opening of the active area of ​​the finished border material strip according to position information detected by the first visual recognition mechanism to form the glue layer.

[0011] Optionally, the membrane electrode production equipment also includes: a vacuum adsorption roller, which is docked with the CCM providing device to receive and convey the CCM sheet; along the conveying direction of the first conveyor belt, the vacuum adsorption roller is located downstream of the adhesive layer providing device, and the vacuum adsorption roller is arranged opposite to the first conveyor belt to construct the composite device.

[0012] Optionally, the light source curing device includes: a second conveyor belt, docked with the composite device to receive and convey the first membrane electrode initial material belt; a light source module, arranged opposite to the second conveyor belt, for irradiating the first membrane electrode initial material belt conveyed by the second conveyor belt, to form the first membrane electrode material belt after the glue layer is cured.

[0013] Optionally, the first membrane electrode initial material strip includes a stacked finished frame material strip, a glue layer, a CCM body and a CCM bottom film, and the light source module is configured to illuminate the first membrane electrode initial material strip from a side close to the finished frame material strip.

[0014] Optionally, the membrane electrode production equipment further includes: a second visual recognition mechanism, disposed downstream of the light source curing device, for detecting the quality of the first membrane electrode material strip.

[0015] Optionally, the membrane electrode production equipment also includes a waste discharge device, which includes: a third conveyor belt, connected to the light source curing device to receive and convey the first membrane electrode material strip; a waste discharge mechanism, arranged on the upper side of the third conveyor belt, for peeling off the CCM bottom film of the first membrane electrode material strip.

[0016] Optionally, the waste discharge mechanism includes: a tape unwinding mechanism for unwinding the tape; a pressing roller arranged on the upper side of the third conveyor belt for guiding the tape to abut against the first membrane electrode material tape so as to adhere the CCM bottom film through the tape; and a tape winding mechanism for winding the tape.

[0017] The fuel cell production equipment of the second embodiment of the present application includes the membrane electrode production equipment described in the first embodiment of the present application.

[0018] The membrane electrode preparation method of the third embodiment of the present application comprises:

[0019] Providing finished frame strips with active area openings;

[0020] Providing a liquid adhesive layer to the surface of the finished frame material strip to form a frame composite material strip;

[0021] Provide CCM sheets;

[0022] Compounding the frame composite material strip and the CCM sheet material to form a first membrane electrode initial material strip;

[0023] A light source curing device is used to irradiate the first membrane electrode initial strip to form the first membrane electrode strip.

[0024] Optionally, providing a liquid adhesive layer to the surface of the finished frame material strip includes:

[0025] A liquid glue layer is dripped around the opening of the active area.

[0026] Optionally, compounding the frame composite material strip and the CCM sheet material comprises:

[0027] The CCM sheet is attached to the adhesive layer at a position corresponding to the opening of the active area to form a first membrane electrode initial strip.

[0028] Compared with the prior art, this solution has the following beneficial effects:

[0029] The first membrane electrode material strip is prepared using the membrane electrode production equipment of the embodiment of the present application, and a liquid glue layer is provided to the surface of the finished frame material strip using a glue layer providing device. The glue layer providing area is generally the overlap area of ​​the CCM sheet material, and a composite device is used to attach the CCM sheet material to the glue layer corresponding to the opening position of the active area without heating, and the first membrane electrode initial material strip is composited, and then a light source curing device is used to irradiate the liquid glue layer, so that the glue layer is firmly bonded to the finished frame material strip and the CCM sheet material after curing, forming a sealed CCM and sealing frame composite material strip, that is, the first membrane electrode material strip. Since a liquid glue layer is used to replace the solid glue layer in the traditional technology, and the materials of each layer are not heated during the composite process, and the glue layer is no longer rolled during the curing process, the possibility of deformation of the first membrane electrode material strip is reduced, thereby improving the finished product qualification rate and quality control accuracy of the membrane electrode.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 An overall schematic diagram of a membrane electrode production device provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a frame providing device for a membrane electrode production device provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of a CCM providing device for a membrane electrode production device provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of a glue layer providing device, a composite device and a light source curing device for a membrane electrode production device provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of a waste discharge device for a membrane electrode production device provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the junction between the frame providing device and the first conveyor belt of the membrane electrode production equipment provided in an embodiment of the present application;

[0038] Figure 7A schematic diagram of the interface between the CCM providing device and the vacuum adsorption roller of the membrane electrode production equipment provided in the embodiment of the present application;

[0039] Figure 8 A schematic structural diagram of a first membrane electrode material strip of a membrane electrode production device provided in an embodiment of the present application;

[0040] Fig. 9 A schematic diagram of the structure of a composite material strip for a frame of a membrane electrode production device provided in an embodiment of the present application;

[0041] Fig.10 for Fig. 9 Schematic diagram of glue dripping in the middle AA section;

[0042] Fig.11 for Fig. 9 Schematic diagram of glue dripping in the middle BB section;

[0043] Fig.12 A schematic diagram of the process flow corresponding to the membrane electrode production equipment provided in the embodiment of the present application.

[0044] Icons: 100-membrane electrode production equipment; 110-frame providing device; 111-frame unwinding mechanism; 112-frame driving roller assembly; 113-frame cutting mechanism; 114-frame winding mechanism; 120-glue layer providing device; 121-glue dripping device; 130-CCM providing device; 131-CCM unwinding mechanism; 132-CCM driving roller assembly; 133-CCM cutting mechanism; 134-CCM winding mechanism; 140-compounding device; 141-first conveyor belt; 142-vacuum adsorption roller; 150-light source curing device; 151-second conveyor belt; 152-light source module; 160-waste discharge device; 161-third conveyor belt; 163-third visual recognition mechanism; 1 64-waste discharge mechanism; 1641-tape unwinding mechanism; 1642-adhesive roller; 1643-tape winding mechanism; 170-first visual identification mechanism; 180-second visual identification mechanism; 200-frame coil material strip; 210-finished frame material strip; 211-active area opening; 220-glue layer; 230-frame composite material strip; 240-frame bottom film material strip; 250-initial frame material strip; 300-CCM coil material strip; 310-CCM sheet material; 311-CCM body; 312-CCM bottom film; 320-CCM transfer film material strip; 330-CCM bottom film material strip; 340-CCM material strip; 400-first membrane electrode material strip; 410-first membrane electrode initial material strip. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0047] In the related art, a solid adhesive layer is provided on the surface of the frame, and the adhesive layer is first cut to leave an active opening of the frame, and then hot-pressed with the CCM to activate the adhesive layer by heat while providing a certain pressure to ensure that the CCM and the frame are reliably bonded together. However, this process often causes deformation, resulting in a low qualified rate of MEA products.

[0048] The inventors have found through research that during the hot pressing process, the stacked composite strips pass through a pair of hot pressing rollers and undergo a process of pulling and compressing. The CCM is a thin film structure, and the tension in the film undergoes a sudden change process, and the concentrated load causes deformation in the cross-sectional direction of the film. Since the CCM cannot withstand excessive loads during transportation and hot pressing, if an auxiliary film is used to increase the stiffness, although the degree of deformation of the CCM can be reduced, the heat transfer efficiency will be reduced, and the temperature resistance and heat shrinkage of the auxiliary film are very high. In addition, since the CCM is also heated, the CCM may lose water, resulting in wrinkle defects in subsequent processes, reducing the life and safety performance of the battery.

[0049] Based on the above problems, the inventors provide a new type of membrane electrode production equipment, which uses a liquid glue layer instead of a solid glue layer, and a light source curing device instead of a pair of hot pressing rollers. This solution of using additive manufacturing to achieve rapid prototyping of complex sealing structures reduces the possibility of deformation during the composite process of CCM and the sealing frame, and improves the finished product qualification rate and quality control accuracy of the membrane electrode.

[0050] like Figure 1 and Fig.12As shown, the membrane electrode production equipment 100 of some embodiments of the present application includes a frame providing device 110, a glue layer providing device 120, a CCM providing device 130, a compounding device 140 and a light source curing device 150. The frame providing device 110 is used to provide a finished frame material strip 210, and the finished frame material strip 210 has an active area opening 211; the glue layer providing device 120 is used to provide a liquid glue layer 220 to the surface of the finished frame material strip 210 to form a frame composite material strip 230; the CCM providing device 130 is used to provide a CCM sheet 310; the compounding device 140 is used to compound the frame composite material strip 230 and the CCM sheet 310, and the CCM sheet 310 is attached to the glue layer 220 corresponding to the position of the active area opening 211 to form a first membrane electrode initial material strip 410; the light source curing device 150 is used to irradiate the first membrane electrode initial material strip 410 to form a first membrane electrode material strip 400.

[0051] The membrane electrode production equipment 100 of the embodiment of the present application is used to prepare the first membrane electrode material strip 400, and the glue layer providing device 120 is used to provide a liquid glue layer 220 to the surface of the finished frame material strip 210, and the area where the glue layer 220 is provided is generally the overlapping area of ​​the CCM sheet 310; the composite device 140 is used to attach the CCM sheet 310 to the glue layer 220 corresponding to the position of the active area opening 211 without heating, and the first membrane electrode initial material strip 410 is composited, and then the light source curing device 150 is used to irradiate the liquid glue layer 220, so that the glue layer 220 is cured and firmly bonded to the finished frame material strip 210 and the CCM sheet 310, so as to form a sealed CCM and sealing frame composite material strip, the first membrane electrode material strip 400. Since a liquid adhesive layer 220 is used to replace the solid adhesive layer in the traditional technology, and the layers of materials are not heated during the compounding process, and the adhesive layer 220 is no longer rolled during the curing process, the possibility of deformation of the first membrane electrode material strip 400 is reduced, thereby improving the finished product qualification rate and quality control accuracy of the membrane electrode.

[0052] The specific structure of each device of the membrane electrode production equipment 100 of the embodiment of the present application is explained in detail below.

[0053] like Figure 2 and Figure 6As shown, in some embodiments of the present application, the frame providing device 110 includes a frame unwinding mechanism 111, a frame driving roller assembly 112, a frame cutting mechanism 113 and a frame rewinding mechanism 114, and the frame unwinding mechanism 111 is used to unwind the frame coil material strip 200. The frame coil material strip 200 includes a frame bottom film strip 240 and an initial frame strip 250 that are stacked; the frame driving roller assembly 112 is used to drive the frame coil material strip 200 to move forward, the frame cutting mechanism 113 is used to cut an active area opening 211 on the initial frame strip 250 to form a finished frame strip 210 with an active area opening 211, and the frame rewinding mechanism 114 is used to rewind the frame bottom film strip 240.

[0054] The frame drive roller assembly 112 is a pair of speed rollers, which sets a running linear speed for the frame coil material strip 200 for reference by other downstream devices to match the rhythm; the frame cutting mechanism 113 includes a roller cutter, and the shape of the active area opening 211 can be square or circular or any other set shape. The waste formed by cutting on the initial frame material strip 250 corresponds to the shape of the active area opening 211; the waste can be adhered to the frame bottom film material strip 240 and rolled up for recycling, or the waste can be blown away by blowing or other methods, and only the frame bottom film material strip 240 is rolled up.

[0055] A peeling mechanism is provided downstream of the frame cutting mechanism 113 to peel off the finished frame material strip 210 from the frame bottom film material strip 240 . The finished frame material strip 210 continues to be conveyed, and the frame bottom film material strip 240 is rolled up by the frame rolling mechanism 114 .

[0056] Through this arrangement, the frame material strip 200 can be unrolled, and after being cut to form the active area opening 211 , a finished frame material strip 210 can be provided.

[0057] In other embodiments, the finished frame material strip 210 may also be unrolled directly.

[0058] In some embodiments of the present application, the membrane electrode production equipment 100 also includes a first conveyor belt 141, which is connected to the frame providing device 110 to receive and convey the finished frame material belt 210.

[0059] In other embodiments, the finished frame material strip 210 may also be conveyed by rollers.

[0060] Specifically, the first conveyor belt 141 is located downstream of the frame cutting mechanism 113 , and after the finished frame material strip 210 is peeled off from the frame bottom film material strip 240 , the finished frame material strip 210 continues to move forward under the conveyance of the first conveyor belt 141 .

[0061] like Figure 3 and Figure 7As shown, in some embodiments of the present application, the CCM providing device 130 includes a CCM unwinding mechanism 131, a CCM driving roller assembly 132, a CCM cutting mechanism 133 and a CCM winding mechanism 134. The CCM unwinding mechanism 131 is used to unwind the CCM coil material strip 300, and the CCM coil material strip 300 includes a stacked CCM transfer film strip 320, a CCM bottom film strip 330 and a CCM strip 340; the CCM driving roller assembly 132 is used to drive the CCM coil material strip 300 to move; the CCM cutting mechanism 133 is used to cut the CCM bottom film strip 330 and the CCM strip 340 to form a CCM sheet 310, and the CCM sheet 310 includes a stacked CCM body 311 and a CCM bottom film 312; the CCM winding mechanism 134 is used to wind up the CCM transfer film strip 320.

[0062] The CCM drive roller assembly 132 is a pair of speed rollers, which are used to set the corresponding running line speed in coordination with the speed of the frame drive roller assembly 112 to match the beats.

[0063] The CCM cutting mechanism 133 is a common cutting module, which cuts the CCM base film strip 330 and the CCM strip 340 to form individual CCM sheets 310 .

[0064] A peeling mechanism is also provided downstream of the CCM cutting mechanism 133 to peel the CCM sheet 310 from the CCM transfer film tape 320 . The CCM sheet 310 continues to be conveyed, and the CCM transfer film tape 320 is rolled up by the CCM rolling mechanism 134 .

[0065] Furthermore, the stripping mechanism includes a stripping knife that can move forward and backward. With the cooperation of the visual recognition mechanism, it detects whether the CCM sheet 310 is a qualified product. The qualified CCM sheet 310 continues to be conveyed, and the unqualified CCM sheet 310 is peeled off to the waste box on the lower side by the stripping knife moving forward.

[0066] Through this arrangement, the CCM coil material strip 300 can be unwound, and after cutting and peeling, the CCM sheet material 310 can be provided.

[0067] In other embodiments, the CCM sheet 310 may also be provided directly.

[0068] In some embodiments of the present application, the membrane electrode production equipment 100 further includes a first visual recognition mechanism 170 , which is disposed upstream of the glue layer providing device 120 and is used to detect position information of the active area opening 211 of the finished frame material strip 210 .

[0069] The first visual recognition mechanism 170 is a CCD camera, which is arranged on the upper side of the first conveyor belt 141. The first visual recognition mechanism 170 detects the position information of the finished border material belt 210. The CCM cutting mechanism 133 performs asynchronous cutting in response to the detection result of the first visual recognition mechanism 170 and adjusts the feeding speed of the CCM sheet 310 to match each CCM sheet 310 with the active area opening 211.

[0070] In some embodiments of the present application, the membrane electrode production equipment 100 further includes a vacuum adsorption roller 142 , which is docked with the CCM providing device 130 to receive and transport the CCM sheet 310 .

[0071] The vacuum adsorption roller 142 is located downstream of the CCM cutting mechanism 133, and adsorbs the CCM sheet 310 on the roller surface by vacuum adsorption, and rotates and continues to convey the CCM sheet 310. The CCM bottom film 312 of the CCM sheet 310 is attached to the roller surface, so that the CCM body 311 is arranged outward, which is convenient for attaching to the finished frame material strip 210.

[0072] It can be understood that the vacuum adsorption roller 142 can adjust its own rotation speed based on the running line speed of the frame drive roller assembly 112 so that the CCM sheet 310 corresponds to the active area opening 211 of the finished frame material strip 210, and through asynchronous cutting, a gap is formed between two adjacent CCM sheets 310 to achieve waste-free cutting.

[0073] A cleaning roller is also provided around the vacuum adsorption roller 142 , and is arranged upstream of the feeding point of the CCM sheet 310 , so as to clean the roller surface of the vacuum adsorption roller 142 before receiving the CCM sheet 310 .

[0074] In other embodiments, the CCM sheet 310 may also be conveyed by a conveyor belt.

[0075] like Figure 4 , Fig. 9 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, the glue layer providing device 120 includes a glue dripping device 121, which is arranged downstream of the first visual recognition mechanism 170 and is configured to drip glue around the active area opening 211 of the finished frame material strip 210 according to the position information detected by the first visual recognition mechanism 170 to form a glue layer 220.

[0076] As an example, the glue dripping device 121 uses a DOD nozzle, which can not only realize digital continuous glue spraying, but also realize high-precision and high-speed spraying, thereby allowing the tape speed to be increased. The spraying position is generally the overlapping area of ​​the CCM sheet 310. The glue layer 220 is a full resin material with low viscosity and surface tension, and is very easy to wet the finished frame material strip 210. After subsequent compounding and irradiation curing, a first membrane electrode material strip 400 with good sealing can be obtained, and the possibility of material strip deformation is very small.

[0077] With this arrangement, the liquid glue layer 220 can be simply and reliably dripped onto the surface of the finished frame material strip 210 .

[0078] like Fig. 9 , Fig.10 and Fig.11 As shown, the glue dripping device 121 sprays at the cross section AA in full width, and controls the corresponding nozzle to spray at the cross section BB, so as to realize a window-shaped glue line corresponding to the active area opening 211 .

[0079] In other embodiments, the liquid adhesive layer 220 may be provided to the surface of the finished frame material strip 210 by coating or the like.

[0080] In some embodiments of the present application, along the conveying direction of the first conveyor belt 141 , the vacuum adsorption roller 142 is located downstream of the adhesive layer providing device 120 , and the vacuum adsorption roller 142 is arranged opposite to the first conveyor belt 141 to construct a composite device 140 .

[0081] That is to say, there is a pressing gap between the first conveyor belt 141 and the vacuum adsorption roller 142, and the vacuum adsorption roller 142 conveys the CCM sheet 310 to the pressing gap, and the CCM body 311 of the CCM sheet 310 is bonded to the adhesive layer 220 around the active area opening 211 on the finished frame material strip 210 to form the first membrane electrode initial material strip 410, and the CCM bottom membrane 312 is located on the upper side of the first membrane electrode initial material strip 410.

[0082] It should be mentioned that the composite device 140 of the embodiment of the present application is formed by a first conveyor belt 141 and a vacuum adsorption roller 142 without adding any additional devices. Composite is completed while transporting materials, thereby simplifying the structure of the membrane electrode production equipment 100.

[0083] Through this arrangement, the first membrane electrode initial material strip 410 can be composited and the thickness of the first membrane electrode initial material strip 410 can be accurately controlled; and at this time, the glue layer 220 is in liquid state, which improves the uneven load phenomenon during the composite process, thereby reducing the degree of deformation of the first membrane electrode initial material strip 410.

[0084] In other embodiments, an independent compounding device may be provided, and the first conveyor belt 141 and the vacuum adsorption roller 142 respectively convey the finished frame material strip 210 and the CCM sheet material 310 into the compounding device for compounding.

[0085] like Figure 4 As shown, in some embodiments of the present application, the light source curing device 150 includes a second conveyor belt 151 and a light source module 152. The second conveyor belt 151 is connected to the composite device 140 to receive and convey the first membrane electrode initial material belt 410; the light source module 152 is arranged opposite to the second conveyor belt 151, and is used to irradiate the first membrane electrode initial material belt 410 conveyed by the second conveyor belt 151. After the adhesive layer 220 is cured, the first membrane electrode material belt 400 is formed.

[0086] For example, the glue dropping device 121 drops UV glue to form the glue layer 220 , and the light source module 152 irradiates the glue layer 220 with ultraviolet light to solidify the glue layer 220 .

[0087] The second conveyor belt 151 is connected to the first conveyor belt 141 to continue conveying the first membrane electrode initial material belt 410 after the composite treatment.

[0088] With this arrangement, the adhesive layer 220 is irradiated by light source curing, and after curing, the CCM body 311 of the CCM sheet 310 and the finished frame material strip 210 can be reliably bonded; compared with the traditional method of hot pressing and laminating by a pair of hot rollers, the possibility of deformation of the first membrane electrode material strip 400 can be reduced.

[0089] Furthermore, the first membrane electrode initial material strip 410 includes a stacked finished frame material strip 210, a glue layer 220, a CCM body 311 and a CCM bottom film 312, and the light source module 152 is configured to illuminate the first membrane electrode initial material strip 410 from a side close to the finished frame material strip 210.

[0090] As an example, the second conveyor belt 151 is a vacuum adsorption conveyor belt, which adsorbs the first membrane electrode initial material belt 410 from the upper side and drives the material belt to move forward, and the light source module 152 irradiates the first membrane electrode initial material belt 410 from the lower side.

[0091] This arrangement can prevent the light source from passing through the CCM bottom film 312, thereby reducing heat loss and improving curing efficiency.

[0092] like Figure 5 As shown, in some embodiments of the present application, the membrane electrode production equipment 100 also includes a second visual recognition mechanism 180 , which is arranged downstream of the light source curing device 150 and is used to detect the quality of the first membrane electrode material strip 400 .

[0093] The second visual recognition mechanism 180 not only detects the real-time quality of the first membrane electrode material strip 400, such as whether the CCM sheet is aligned with the active area opening of the sealing frame, but also detects the conveying speed of the first membrane electrode material strip 400 or detects the real-time position information of the CCM sheet 310 to provide a reference for the beat matching of other downstream processes.

[0094] like Figure 5 As shown, in some embodiments of the present application, the membrane electrode production equipment 100 further includes a waste discharge device 160, and the waste discharge device 160 includes a third conveyor belt 161 and a waste discharge mechanism 164. The third conveyor belt 161 is docked with the light source curing device 150 to receive and convey the first membrane electrode material strip 400; the waste discharge mechanism 164 is arranged on the upper side of the third conveyor belt 161, and is used to peel off the CCM bottom film 312 of the first membrane electrode material strip 400.

[0095] The third conveyor belt 161 is located downstream of the second conveyor belt 151, and is used to receive and convey the first membrane electrode material strip 400 formed after the adhesive layer 220 is cured; the waste discharge mechanism 164 is arranged downstream of the second visual identification mechanism 180, and the second visual identification mechanism 180 is arranged on the upper side of the third conveyor belt 161, and is used to detect the quality of the first membrane electrode material strip 400 conveyed by the third conveyor belt 161.

[0096] The waste discharge device 160 further includes a third visual recognition mechanism 163, which is disposed downstream of the second visual recognition mechanism 180 and is used to supplement the detection of the features of the first membrane electrode material strip 400 to fully determine the quality of the first membrane electrode material strip 400. It can be understood that the visual recognition mechanism involved in the embodiment of the present application is a CCD camera or other image recognition device.

[0097] The waste discharge mechanism 164 can further peel off the CCM bottom film 312 to facilitate the next step or winding processing.

[0098] like Figure 5 As shown, in some embodiments of the present application, the waste discharge mechanism 164 includes a tape unwinding mechanism 1641, a sticking and pressing roller 1642 and a tape winding mechanism 1643; the tape unwinding mechanism 1641 is used to unwind the tape; the sticking and pressing roller 1642 is arranged on the upper side of the third conveyor belt 161, and is used to guide the tape to abut against the first membrane electrode material tape 400, so as to adhere the CCM bottom film 312 through the tape; the tape winding mechanism 1643 is used to wind up the tape.

[0099] The CCM bottom film 312 can be peeled off from the first membrane electrode material strip 400 by the adhesive tape, so as to form the finished frame material strip 210, the adhesive layer 220, and the CCM body 311 material strip which are stacked in the process, so as to facilitate the next step of continuing the frame bonding or winding process on the other side. For example, after the first membrane electrode material strip 400 after peeling off the CCM bottom film 312 and compounding with the gas diffusion layer, a fuel cell membrane electrode (MEA) can be formed.

[0100] In some embodiments of the present application, the material belts are conveyed by the first conveyor belt 141, the second conveyor belt 151 and the third conveyor belt 161, and the sheet material is conveyed by the vacuum adsorption roller 142, thereby reducing the possibility of deformation of the material belt caused by tension in the roller conveying method.

[0101] A fuel cell production device according to some embodiments of the present application includes a membrane electrode production device 100 .

[0102] Due to the characteristics of the membrane electrode production equipment 100 of the embodiment of the present application, the possibility of CCM deformation and the preparation cost of the membrane electrode are reduced, and the preparation efficiency and quality control accuracy of the membrane electrode are improved.

[0103] The electrode preparation method of some embodiments of the present application includes:

[0104] S100: Providing a finished frame material strip 210 with an active area opening 211;

[0105] S200: providing a liquid adhesive layer 220 to the surface of the finished frame material strip 210 to form a frame composite material strip 230;

[0106] S300: providing CCM sheet 310;

[0107] S400: Compounding the frame composite material strip 230 and the CCM sheet material 310 to form a first membrane electrode initial material strip 410;

[0108] S500: using a light source curing device to irradiate the first membrane electrode initial strip 410 to form the first membrane electrode strip 400.

[0109] In some embodiments of the present application, the method further comprises:

[0110] S600 : peeling off the CCM base film 312 of the CCM sheet 310 .

[0111] In some embodiments of the present application, S200: dripping a liquid adhesive layer 220 onto the surface of the finished frame material strip 210, comprising:

[0112] The liquid glue layer 220 is dripped around the active area opening 211 .

[0113] In this way, not only can the edge of the CCM sheet 310 and the edge of the active area opening 211 be reliably bonded, but also the amount of glue can be saved, the glue dripping speed can be increased, and glue overflow during the pressing process can be avoided.

[0114] In some embodiments of the present application, S400: compounding the frame composite material strip 230 and the CCM sheet 310 includes:

[0115] The CCM sheet 310 is attached to the adhesive layer 220 at a position corresponding to the opening 211 of the active area to form a first membrane electrode initial strip 410 .

[0116] Through this arrangement, the first membrane electrode initial strip 410 can be formed, and a composite strip of the CCM sheet 310 bonded to the sealing frame can be formed with good position accuracy.

[0117] like Figures 1 to 12 As shown, the electrode preparation method is explained below by taking the membrane electrode production equipment 100 of the embodiment of the present application as an example. It can be understood that the implementation of this method does not depend on the membrane electrode production equipment 100.

[0118] The frame unwinding mechanism 111 unwinds the frame coil material strip 200, and the frame coil material strip 200 passes through the frame driving roller assembly 112 and the frame cutting mechanism 113 in sequence, cuts out the active area opening 211, forms a finished frame material strip 210, and is sent to the first conveyor belt 141 to continue moving;

[0119] The glue dripping device 121 drips a liquid glue layer 220 around the active area opening 211 to form a frame composite material strip 230;

[0120] The CCM unwinding mechanism 131 unwinds the CCM coil material strip 300, and the CCM coil material strip 300 passes through the CCM driving roller assembly 132 and the CCM cutting mechanism 133 in sequence, and is half-cut to form a CCM sheet 310, which is then sent to the vacuum adsorption roller 142 to continue moving;

[0121] The first conveyor belt 141 carries the frame composite material strip 230 to the composite location, and the vacuum adsorption roller 142 delivers the CCM sheet 310 to the composite location to be bonded to the frame composite material strip 230, and after bonding, the first membrane electrode initial material strip 410 is formed;

[0122] The first membrane electrode initial material strip 410 enters the second conveyor belt 151, and the UV light source module 152 irradiates the first membrane electrode initial material strip 410 from the side away from the CCM bottom film 312 to cure the adhesive layer 220 to form the first membrane electrode material strip 400;

[0123] The first membrane electrode material belt 400 enters the third conveyor belt 161 , the second visual recognition mechanism 180 detects the lamination quality, and the waste discharge mechanism 164 removes the CCM base film 312 on the surface.

[0124] During the entire conveying process, the conveying speed of the frame coil material belt 200 is used as a reference, and the first conveyor belt 141, the second conveyor belt 151, the third conveyor belt 161 and the vacuum adsorption roller 142 adjust their conveying speeds accordingly, and cooperate with the position information of the active area opening 211 detected by the first visual recognition mechanism 170 to achieve accurate glue dripping around the active area opening 211, match the position of the CCM sheet 310 with the active area opening 211, and asynchronous cutting of the CCM sheet 310, etc. Since the liquid glue dripping method replaces the traditional solid glue layer, and the UV light source irradiation curing method replaces the traditional hot roller compounding method, the possibility of CCM deformation and the preparation cost of the membrane electrode are reduced, and the preparation efficiency and quality control accuracy of the membrane electrode are improved.

[0125] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0126] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A membrane electrode production device (100), characterized in that: include: A frame providing device (110) is used to provide a finished frame material strip (210), wherein the finished frame material strip (210) has an active area opening (211); An adhesive layer providing device (120) is used to provide a liquid adhesive layer (220) to the surface of the finished frame material strip (210) to form a frame composite material strip (230); A CCM providing device (130) for providing a CCM sheet (310); A composite device (140) is used to composite the frame composite material strip (230) and the CCM sheet (310), wherein the CCM sheet (310) is attached to the adhesive layer (220) at a position corresponding to the active area opening (211) to form a first membrane electrode initial material strip (410); The light source curing device (150) is used to irradiate the first membrane electrode initial material strip (410), and the adhesive layer (220) is cured to form the first membrane electrode material strip (400).

2. The membrane electrode production equipment (100) according to claim 1, characterized in that: The frame providing device (110) comprises: A frame unwinding mechanism (111) for unwinding a frame coil material strip (200), wherein the frame coil material strip (200) comprises a frame bottom film strip (240) and an initial frame strip (250) which are stacked; The frame driving roller assembly (112) is used to drive the frame coil material belt (200) to move forward; A frame cutting mechanism (113) is used to cut an active area opening (211) on an initial frame material strip (250) to form a finished frame material strip (210); The frame rolling mechanism (114) is used for rolling up the frame bottom supporting film strip (240).

3. The membrane electrode production equipment (100) according to claim 2, characterized in that: Also includes: The first conveyor belt (141) is connected to the frame providing device (110) to receive and convey the finished frame material belt (210).

4. The membrane electrode production equipment (100) according to claim 3, characterized in that: The CCM providing device (130) comprises: A CCM unwinding mechanism (131) for unwinding a CCM coil material strip (300), wherein the CCM coil material strip (300) comprises a CCM transfer film strip (320), a CCM bottom film strip (330) and a CCM strip (340) which are stacked; A CCM driving roller assembly (132) for driving the CCM coil material belt (300) to move forward; A CCM cutting mechanism (133) is used to cut the CCM base film strip (330) and the CCM strip (340) to form a CCM sheet (310), wherein the CCM sheet (310) includes a CCM body (311) and a CCM base film (312) which are stacked; The CCM winding mechanism (134) is used for winding the CCM transfer film tape (320).

5. The membrane electrode production equipment (100) according to claim 3, characterized in that: Also includes: The first visual recognition mechanism (170) is arranged upstream of the adhesive layer providing device (120) and is used to detect the position information of the active area opening (211) of the finished frame material strip (210).

6. The membrane electrode production equipment (100) according to claim 5, characterized in that: The adhesive layer providing device (120) comprises: The glue dripping device (121) is arranged downstream of the first visual recognition mechanism (170) and is configured to drip glue around the active area opening (211) of the finished frame material strip (210) according to the position information detected by the first visual recognition mechanism (170) to form the glue layer (220).

7. The membrane electrode production equipment (100) according to claim 3, characterized in that: Also includes: A vacuum suction roller (142) docked with the CCM providing device (130) to receive and convey the CCM sheet (310); Along the conveying direction of the first conveyor belt (141), the vacuum adsorption roller (142) is located downstream of the adhesive layer providing device (120), and the vacuum adsorption roller (142) is arranged opposite to the first conveyor belt (141) to form the composite device (140).

8. The membrane electrode production equipment (100) according to claim 1, characterized in that: The light source curing device (150) comprises: A second conveyor belt (151) docked with the composite device (140) to receive and convey the first membrane electrode initial material belt (410); The light source module (152) is arranged opposite to the second conveyor belt (151) and is used to illuminate the first membrane electrode initial material belt (410) conveyed by the second conveyor belt (151), so that the adhesive layer (220) is cured to form the first membrane electrode material belt (400).

9. The membrane electrode production equipment (100) according to claim 8, characterized in that: The first membrane electrode initial material strip (410) comprises a stacked finished frame material strip (210), a glue layer (220), a CCM body (311) and a CCM bottom film (312), and the light source module (152) is configured to illuminate the first membrane electrode initial material strip (410) from a side close to the finished frame material strip (210).

10. The membrane electrode production equipment (100) according to claim 1, characterized in that: Also includes: The second visual recognition mechanism (180) is arranged downstream of the light source curing device (150) and is used to detect the quality of the first membrane electrode material strip (400).

11. The membrane electrode production equipment (100) according to claim 1, characterized in that: The invention also comprises a waste discharge device (160), wherein the waste discharge device (160) comprises: A third conveyor belt (161) is connected to the light source curing device (150) to receive and convey the first membrane electrode material belt (400); The waste discharge mechanism (164) is arranged on the upper side of the third conveyor belt (161) and is used for peeling off the CCM bottom film (312) of the first membrane electrode material belt (400).

12. The membrane electrode production equipment (100) according to claim 11, characterized in that: The waste discharge mechanism (164) comprises: A tape unwinding mechanism (1641) for unwinding the tape; A sticking and pressing roller (1642) is arranged on the upper side of the third conveyor belt (161) and is used to guide the adhesive tape to abut against the first membrane electrode material belt (400) so as to stick the CCM base film (312) through the adhesive tape; The adhesive tape rewinding mechanism (1643) is used for rewinding the adhesive tape.

13. A fuel cell production device, characterized in that: A membrane electrode production device (100) comprising any one of claims 1 to 12.

14. A membrane electrode preparation method, characterized in that: include: Providing finished frame strips with active area openings; Providing a liquid adhesive layer to the surface of the finished frame material strip to form a frame composite material strip; Provide CCM sheets; Compounding the frame composite material strip and the CCM sheet material to form a first membrane electrode initial material strip; A light source curing device is used to irradiate the first membrane electrode initial strip to form the first membrane electrode strip.

15. The membrane electrode preparation method according to claim 14, characterized in that: The step of providing a liquid adhesive layer to the surface of the finished frame material strip comprises: A liquid glue layer is dripped around the opening of the active area.

16. The membrane electrode preparation method according to claim 14, characterized in that: The compounding of the frame composite material strip and the CCM sheet material comprises: The CCM sheet is attached to the adhesive layer at a position corresponding to the opening of the active area to form a first membrane electrode initial strip.

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