Novel pressing plate device for preparing fuel cell membrane electrode

Abstract

The utility model discloses a novel pressure plate device for fuel cell membrane electrode preparation, which comprises a square lower bottom plate and a square upper pressure plate, communicated through notches are arranged on the lower bottom plate and the upper pressure plate, connecting shafts are fixedly arranged on the corresponding side edges of the same side of the lower bottom plate and the upper pressure plate, and the lower bottom plate and the upper pressure plate are connected through the connecting shafts. The connecting shafts are connected through connecting plates, the connecting plates are hinged to the two connecting shafts respectively, and when the lower bottom plate and the upper pressing plate completely coincide, the through groove openings of the lower bottom plate and the upper pressing plate completely coincide. And the pressing effect on the carbon paper can be effectively achieved, and it is guaranteed that the carbon paper is smoothly dried in the hot air circulation box.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pressing plate, especially a novel pressing plate device for fuel cell membrane electrode preparation. BACKGROUND

[0002] Fuel cell is a kind of power generation device that converts chemical energy existing in fuel and oxidant into electric energy directly, and membrane electrode is an important component of fuel cell, which is mainly composed of proton exchange membrane, diffusion layer and catalyst, wherein, the diffusion layer is prepared by carbon paper after hydrophobic treatment process, and in this process, the carbon paper needs to be dried after hydrophobic treatment, and the commonly used equipment is hot air circulating oven.

[0003] The hot air circulating oven includes a conveying device composed of a conveying belt, and the carbon paper is placed on the conveying belt, and the conveying process of the carbon paper in the hot air circulating oven realizes the drying work, since the carbon paper is light in quality, the air volume is large during drying, which can cause the carbon paper to be unable to be positioned on the transmission device, thereby increasing the working difficulty of the drying process. UTILITY MODEL CONTENT

[0004] The utility model discloses a novel pressing plate device for fuel cell membrane electrode preparation, which has the advantages of effectively realizing the pressing effect on carbon paper and ensuring the smooth drying work of carbon paper in the hot air circulating oven.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a novel pressing plate device for fuel cell membrane electrode preparation, including square lower bottom plate and upper pressing plate, the lower bottom plate and upper pressing plate are all equipped with the through slot mouth that communicates, the same side wall of lower bottom plate and upper pressing plate is all fixedly equipped with connecting shaft, the connecting shaft is all connected through connecting plate, the connecting plate is respectively hinged on two connecting shafts, when the lower bottom plate is completely coincident with the upper pressing plate, the through slot mouth of lower bottom plate and upper pressing plate is completely coincident.

[0006] The utility model is further provided with: the connecting shaft is symmetrically arranged at a pair of shorter side of lower bottom plate and upper pressing plate.

[0007] The utility model is further provided with: the connecting shaft of upper pressing plate is screw-threaded with the locking nut that is in contact with connecting plate.

[0008] The utility model is further provided with: the upper pressing plate is transparent.

[0009] The utility model is further provided with: the upper surface of lower bottom plate is fixedly equipped with superfine fiber non-woven fabric layer near through slot mouth.

[0010] The utility model further sets up: four lateral walls of lower bottom plate all be equipped with with the air flow channel that communicates with the through slot, the lower bottom plate is located at the array of superfine fiber non -woven fabric layer cover and communicates with the air flow channel exhaust micro -hole.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1, this pressing device passes through the connecting plate and constitutes a whole, can realize the opening and closing between lower bottom plate and upper pressing plate under the action of connecting plate, convenient carbon paper is placed between lower bottom plate and upper pressing plate, after the coincidence between lower bottom plate and upper pressing plate realizes the pressing positioning of carbon paper, guarantees the smooth drying work of carbon paper in hot -blast circulating oven;

[0013] 2, the pressing positioning of carbon paper is realized when lower bottom plate and upper pressing plate coincide, two through slot completely coincide at this time, guarantee that carbon paper and the maximum contact area with the outside, thereby effectively improve drying efficiency;

[0014] 3, the structure of connecting shaft and connecting plate are all set up in the shorter side of lower bottom plate and upper pressing plate, carbon paper enters between two plates from the longer side at this time, reduces the extension travel of carbon paper, improves the flatness of carbon paper between lower bottom plate and upper pressing plate;

[0015] 4, the locking nut of connecting plate action is screw connected on the connecting shaft of upper pressing plate, the orientation locking of lower bottom plate and upper pressing plate under the arbitrary opening and closing degree of staff can be convenient, improve functionality and operability;

[0016] 5, upper pressing plate is set up as transparent, can be convenient for staff to visually observe the placement condition of carbon paper between two plates, effectively avoid the wrinkle of carbon paper;

[0017] 6, set up superfine fiber non -woven fabric layer on lower bottom plate, on the one hand can play the flexible support effect to carbon paper, can effectively reduce the damage phenomenon to carbon paper, also can avoid the invalid limit of carbon paper due to the gap between upper top plate and lower bottom plate caused by material itself, surface roughness, process problem etc.; On the other hand, superfine fiber non -woven fabric layer has soft and delicate, surface smooth, not easy to scratch sensitive material's advantage, when it contacts carbon paper, the friction is small, can reduce the risk of damage, in addition, superfine fiber non -woven fabric also has the advantage of no fiber falling, especially high -quality superfine fiber cloth is not easy to drop, when and carbon paper contact, can avoid the situation of blocking carbon paper micro -hole;

[0018] 7. The microfiber nonwoven fabric layer also has a good moisture absorption effect. When the carbon paper is clamped and positioned between the top plate and the bottom plate, its periphery will inevitably be blocked, resulting in poor drying effect on the periphery of the carbon paper. At this time, the microfiber nonwoven fabric layer can play a moisture absorption role on its periphery. That is, during the drying process in the dryer, the presence of the exhaust micropores set in the bottom plate can form a hot airflow channel between the microfiber nonwoven fabric layer and the carbon paper, effectively realizing the drying effect on the clamped part of the carbon paper, and avoiding damage and defective products. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the pressure plate device;

[0021] Figure 2 This is a schematic diagram showing the bottom plate and the top pressure plate in an overlapping state;

[0022] Figure 3 This is a schematic diagram of a pressure plate device containing exhaust micropores.

[0023] In the diagram: 1. Lower base plate; 2. Upper pressure plate; 3. Through slot; 4. Connecting shaft; 5. Connecting plate; 6. Locking nut; 7. Handle; 8. Microfiber nonwoven fabric layer; 9. Airflow channel; 10. Exhaust micropores. Detailed Implementation

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] It is to be understood that the terms so far as the language goes are used herein only to describe specific embodiments and not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components, and / or combinations thereof.

[0027] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be clear that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The techniques, methods and devices known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0029] For the purposes of the description, reference can be made to spatially relative terms, such as "above", "below", "upper", "lower", and the like, to describe the relative location of a device or feature as shown in the figures. It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device shown in the figures is inverted, then a device described as "above" or "up" other devices or structures would then be oriented "below" or "down" the other devices or structures. Thus, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", and the like, as used herein do not have any specific meaning and are used only to distinguish one element from another. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

[0030] In addition, it should be noted that the use of the terms "first", "second", and the like, to describe various components does not imply any particular importance or that the concepts cannot be implemented with more than two components. Terms are used only as a shorthand.

[0031] Embodiment: A new type of pressing plate device for preparing fuel cell membrane electrode, as shown in Figure 1 and 2 , comprising a lower base plate 1 and an upper pressing plate 2 in square shape, both the lower base plate 1 and the upper pressing plate 2 are provided with a through slot 3, both shorter sides of the lower base plate 1 and the upper pressing plate 2 are fixedly provided with a connecting shaft 4, the connecting shafts 4 on the same side of the lower base plate 1 and the upper pressing plate 2 are connected through a connecting plate 5, that is, the connecting plate 5 is hingedly connected to the two connecting shafts 4, so as to realize the connection between the lower base plate 1 and the upper pressing plate 2 and the opening and closing of the two under the rotation of the hinged connecting plate 5; at the same time, the connecting shaft 4 of the upper pressing plate 2 is threadedly connected with a locking nut 6 which is in abutment with the connecting plate 5, as shown in Figure 2 , when the lower base plate 1 and the upper pressing plate 2 completely coincide, the through slots 3 of the lower base plate 1 and the upper pressing plate 2 completely coincide.

[0032] Specific implementation: pull the upper pressing plate 2, under the action of the connecting plate 5, make the lower base plate 1 and the upper pressing plate 2 in an open state, at this time, the carbon paper to be dried can be sent into the lower base plate 1 and the upper pressing plate 2 from the longer side of the upper pressing plate 2, in this process, the worker can twist the locking nut 6 to realize the positioning of the opening position between the two plates, which is convenient for the sending of the carbon paper; after the carbon paper is successfully sent into the lower base plate 1 and the upper pressing plate 2, loosen the locking nut 6, under the action of gravity, make the upper pressing plate 2 coincide with the lower base plate 1, at this time, the upper pressing plate 2 realizes the pressing effect on the carbon paper, finally, the pressing plate device can be placed on the conveying belt of the hot air circulating oven to realize the drying of the carbon paper.

[0033] In this embodiment, the upper pressure plate 2 is made of transparent plastic. The transparent upper pressure plate 2 allows workers to easily observe the placement of the carbon paper on the lower base plate 1, preventing wrinkles in the carbon paper; Figure 3 As shown, in order to quickly place the carbon paper, a marking frame 21 matching the size of the carbon paper can be set on the surface of the bottom plate 1. A bright color, such as red, can be used to highlight it.

[0034] In this embodiment, as Figure 1 As shown in Figure 2, in order to facilitate the pulling of the upper pressure plate 2 by the staff, multiple handles 7 can be provided on the upper surface of the upper pressure plate 2.

[0035] Furthermore, such as Figure 1 As shown, a microfiber nonwoven fabric layer 8 is fixedly provided on the upper surface of the lower base plate 1. This layer serves two purposes: firstly, it provides flexible support for the carbon paper, preventing potential wear between the upper pressure plate 2 and the lower base plate 1; secondly, it absorbs moisture from the clamped carbon paper. Specifically, the microfiber nonwoven fabric layer 8 can be made of polyamide microfiber cloth. Figure 3 As shown, airflow channels 9 communicating with through slots 3 are arrayed on the four side walls of the bottom plate. Multiple exhaust microholes 10 communicating with airflow channels 9 are evenly arrayed on the bottom plate 1 where the microfiber nonwoven fabric layer 8 is covered. The diameter of the exhaust microholes 10 is 1-3mm. In this embodiment, 2mm exhaust microholes 10 are used. At this time, the presence of airflow channels 9 and exhaust microholes 10 on the bottom plate 1 can form a hot airflow channel between the microfiber nonwoven fabric layer and the carbon paper, effectively realizing the drying effect on the part of the carbon paper that is clamped, and avoiding damage and defective products.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel compression plate device for the preparation of fuel cell membrane electrode comprising a lower base plate (1) and an upper compression plate (2) in the form of a square, characterized in that: The lower bottom plate (1) and the upper pressing plate (2) are provided with communicating through slots (3), and the same side wall of the lower bottom plate (1) and the upper pressing plate (2) is fixedly provided with parallel connecting shafts (4), the connecting shafts (4) are connected through connecting plates (5), the connecting plates (5) are respectively hinged on the two connecting shafts (4), and the through slots (3) of the lower bottom plate (1) and the upper pressing plate (2) are completely coincident when the lower bottom plate (1) is completely coincident with the upper pressing plate (2).

2. The novel compression plate device for membrane electrode assembly preparation of fuel cell as claimed in claim 1, wherein: The connecting shafts (4) are symmetrically arranged at a pair of shorter side edges of the lower bottom plate (1) and the upper pressing plate (2).

3. The novel compression plate device for membrane electrode assembly preparation of fuel cell as claimed in claim 1, wherein: The connecting shaft (4) of the upper pressing plate (2) is threadedly connected with a locking nut (6) abutting against the connecting plate (5).

4. The novel compression plate device for the membrane electrode assembly preparation of the fuel cell as claimed in claim 1, wherein: The upper pressing plate (2) is transparent.

5. The novel compression plate device for the membrane electrode assembly preparation of the fuel cell as claimed in claim 4, wherein: The upper surface of the lower bottom plate (1) is fixedly provided with an ultra-fine fiber non-woven fabric layer (8) near the through slot (3).

6. The novel compression plate device for the membrane electrode assembly preparation of the fuel cell as claimed in claim 5, wherein: The four side walls of the lower bottom plate (1) are provided with air flow channels (9) communicating with the through slot (3), and the lower bottom plate (1) is provided with air exhaust micropores (10) communicating with the air flow channels (9) at the covered position of the ultra-fine fiber non-woven fabric layer (8). The connecting shafts (4) are symmetrically arranged at a pair of shorter side edges of the lower bottom plate (1) and the upper pressing plate (2). The connecting shaft (4) of the upper pressing plate (2) is threadedly connected with a locking nut (6) abutting against the connecting plate (5). The upper pressing plate (2) is transparent. The upper surface of the lower bottom plate (1) is fixedly provided with an ultra-fine fiber non-woven fabric layer (8) near the through slot (3). The four side walls of the lower bottom plate (1) are provided with air flow channels (9) communicating with the through slot (3), and the lower bottom plate (1) is provided with air exhaust micropores (10) communicating with the air flow channels (9) at the covered position of the ultra-fine fiber non-woven fabric layer (8).

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