CN216826813U - Integrated vacuum adsorption clamp for CCM preparation of fuel cell - Google Patents

Abstract

The utility model provides an integrated vacuum adsorption clamp for CCM preparation of fuel cells, which comprises a tool clamp, a joint and a vacuum pump; the tooling clamp comprises an upper frame and a lower frame; the lower frame comprises a vacuum adsorption cavity and a vacuum end plate which are fixedly connected, and fixing frames fixedly arranged at two ends of the vacuum adsorption cavity and the vacuum end plate; spraying holes are formed in the middle parts of the upper frame, the vacuum adsorption cavity and the vacuum end plate; an inner sealing ring and an outer sealing ring are arranged between the vacuum adsorption cavity and the vacuum end plate; a circle of clamping seal ring is fixedly arranged along the edge of the spraying hole on the upper surface of the vacuum adsorption cavity; the vacuum adsorption cavity comprises a vacuum adsorption cavity body and is characterized in that a plurality of through holes with uniform sizes are distributed on the upper surface of the vacuum adsorption cavity body, a gas port is formed in the side surface of the vacuum adsorption cavity body, the fixing frame is provided with an interface, one end of the joint is connected with the interface, and the other end of the joint is connected to the vacuum pump. The utility model solves the problem that the proton exchange membrane curls in the process of laying and aging when preparing CCM.

Description

An integrated vacuum adsorption fixture for fuel cell CCM preparation

technical field

The utility model relates to the field of fuel cell CCM preparation, in particular to an integrated vacuum adsorption fixture used for fuel cell CCM preparation.

Background technique

The spraying method is a common method for preparing membrane electrode assemblies. The cathode and anode catalysts are directly coated on both sides of the proton membrane to obtain CCM (Catalyst Coated Membrane), and then pass through a certain temperature, pressure and gas diffusion layer and polyester frame. Press together. Because the proton membrane is relatively thin, the thickness is usually several micrometers to tens of micrometers, and when it contacts the catalyst slurry, it deforms, twists, and wrinkles seriously and cannot be kept flat. Therefore, the proton membrane must be clamped and fixed on a device when spraying. However, in the process of laying out a proton exchange membrane with a low thickness, due to the influence of temperature and humidity, static electricity, etc., it is easy to cause curling and wrinkling of the membrane, which affects the spraying quality and later hot pressing.

Utility model content

According to the above proposal, the existing jig for membrane electrode cannot solve the technical problem of curling of the proton exchange membrane during the laying out process, but an integrated vacuum adsorption jig for the preparation of fuel cell CCM is provided, which can quickly lay out the membrane and save workers The time required to lay out the film, and the proton exchange membrane will not have problems such as wrinkles and positioning deviation when assembling the jig, which improves the yield of the sample and the work efficiency of the workers.

The technical means adopted by the utility model are as follows:

An integrated vacuum adsorption fixture for the preparation of fuel cell CCM, comprising a fixture, a joint and a vacuum pump;

The tooling fixture includes an upper frame and a lower frame; the upper frame is detachably installed above the lower frame;

The lower frame includes a vacuum adsorption chamber and a vacuum end plate that are fixedly connected, and a fixed frame that is fixedly installed on both ends of the vacuum adsorption chamber and the vacuum end plate;

The upper frame, the vacuum adsorption chamber and the middle of the vacuum end plate are all provided with spray holes; the spray holes of the vacuum adsorption chamber are aligned with the edges of the spray holes of the vacuum end plate;

An inner sealing ring and an outer sealing ring are arranged between the vacuum adsorption chamber and the vacuum end plate; the inner sealing ring is arranged along the edges of the spray holes of the vacuum adsorption chamber and the vacuum end plate, and the inner sealing ring is arranged along the edges of the spray holes of the vacuum adsorption chamber and the vacuum end plate. The outer sealing ring is arranged along the outer edges of the vacuum adsorption chamber and the vacuum end plate;

A ring of clamping sealing ring is fixedly installed along the edge of the spray hole on the upper surface of the vacuum adsorption chamber;

The vacuum adsorption chamber is a hollow structure, with several through holes of uniform size distributed on the upper surface, an air port communicating with the interior is provided on the side, the fixing frame is provided with an interface communicating with the air port, and one end of the joint is connected to the air port. the interface, and the other end is connected to the vacuum pump through a pipeline.

Further, the pipeline is also provided with a pressure gauge, a pressure relief valve and an on-off valve.

Further, the upper frame is provided with screw holes, which are detachably connected to the vacuum adsorption chamber through screws.

Further, when the upper frame is installed above the vacuum adsorption chamber by the screw, the edge of the spraying hole of the upper frame is aligned with the edge of the spraying hole of the vacuum adsorption chamber.

Further, the edge of the spray hole on the upper surface of the vacuum adsorption chamber is provided with a groove for installing the clamping sealing ring.

Further, the clamping sealing ring is bonded in the groove.

Compared with the prior art, the utility model has the following advantages:

The integrated vacuum adsorption fixture for the preparation of the fuel cell CCM provided by the utility model solves the problems such as curling and wrinkling of the proton exchange membrane during the laying process, and the designed integrated vacuum adsorption fixture can quickly lay out the film, saving workers from laying out The time of the film, and the proton exchange membrane will not have problems such as wrinkles and positioning deviation when assembling the fixture, which improves the yield of the sample and the work efficiency of the workers, which is of great significance for the efficient production of actual CCM.

Based on the above reasons, the utility model can be widely promoted in the field of fuel cell CCM preparation.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

FIG. 1 is a schematic structural diagram of the integrated vacuum adsorption fixture according to the present invention.

FIG. 2 is a schematic top view of the integrated vacuum adsorption fixture according to the present invention.

FIG. 3 is a schematic diagram of the assembly of the tooling fixture according to the present invention.

4 is a schematic diagram of the back, side and front structures of the vacuum adsorption chamber according to the present invention.

In the figure: 1. Fixture; 2. Joint; 3. Pressure gauge; 4. Pressure relief valve; 5. On-off valve; 6. Vacuum pump; 7. Screw; 8. Upper frame; 9. Porous membrane or proton exchange membrane ; 10, clamping sealing ring; 11, vacuum adsorption cavity; 12, inner sealing ring; 13, outer sealing ring; 14, vacuum end plate; 15, fixing frame.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are only a part of the embodiments of the present invention, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application or uses in any way. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the terminology used herein is for describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only and not limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. The orientation or positional relationship is usually based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientations do not indicate and imply the indicated device unless otherwise stated. Or elements must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention: the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under its device or structure". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood To limit the scope of protection of the present invention.

Example 1

As shown in Figures 1-4, the present utility model provides an integrated vacuum adsorption fixture for the preparation of a fuel cell CCM, including a fixture 1, a joint 2 and a vacuum pump 6;

The fixture 1 includes an upper frame 8 and a lower frame; the upper frame 8 is detachably mounted above the lower frame;

The lower frame includes a vacuum adsorption chamber 11 and a vacuum end plate 14 that are fixedly connected, and a fixed frame 15 fixedly installed at both ends of the vacuum adsorption chamber 11 and the vacuum end plate 14 ;

The upper frame 8, the vacuum adsorption chamber 11 and the middle of the vacuum end plate 14 are all provided with spray holes; the spray holes of the vacuum adsorption chamber 11 are aligned with the edges of the spray holes of the vacuum end plate 14;

An inner sealing ring 12 and an outer sealing ring 13 are arranged between the vacuum adsorption chamber 11 and the vacuum end plate 14 ; The outer sealing ring 13 is arranged along the outer edges of the vacuum adsorption chamber 11 and the vacuum end plate 14; the inner sealing ring 12 and the outer sealing ring 13 are used to ensure the vacuum The tightness between the adsorption chamber 11 and the vacuum end plate 14;

A ring of clamping sealing ring 10 is fixedly installed along the edge of the spray hole on the upper surface of the vacuum adsorption chamber 11 , and the top of the clamping sealing ring 10 is slightly higher than the upper surface of the vacuum adsorption chamber 11 ;

The vacuum adsorption chamber 11 is a hollow structure, with a plurality of through holes of uniform size distributed on the upper surface, an air port communicating with the inside is provided on the side, the fixing frame 15 is provided with an interface communicating with the air port, and one end of the joint 2 is provided. It is connected to the interface, and the other end is connected to the vacuum pump 6 through a pipeline.

Further, the pipeline is also provided with a pressure gauge 3 , a pressure relief valve 4 and an on-off valve 5 .

Further, the upper frame 8 , the vacuum adsorption chamber 11 and the vacuum end plate 14 are all parallelogram frames.

Further, the upper frame 8 is provided with screw holes, which are detachably connected to the vacuum adsorption chamber 11 through screws 7 .

Further, when the upper frame 8 is installed above the vacuum suction chamber 11 by the screws 7 , the edge of the spraying hole of the upper frame 8 is aligned with the edge of the spraying hole of the vacuum suction chamber 11 .

Further, the edge of the spray hole on the upper surface of the vacuum adsorption chamber 11 is provided with a groove for installing the clamping sealing ring 10 .

Further, the clamping sealing ring 10 is bonded in the groove.

Further, the upper frame 8 is a single-layer solid frame.

Further, the clamping sealing ring 10 is an elastic rubber ring.

When the vacuum adsorption fixture of the present invention is in use, the porous film or proton exchange membrane 9 for preparing membrane electrodes is laid on the upper surface of the vacuum adsorption chamber 11, the pressure relief valve 4 is closed, and the on-off valve is opened. Valve 5, turn on the vacuum pump 6, and flatten the porous film or proton exchange membrane 9 on the vacuum adsorption chamber 11 through the vacuum adsorption force, and then fix the upper frame 8 with the screws 7 Above the vacuum adsorption chamber 11, the porous membrane or proton exchange membrane 9 is clamped and fixed between the upper frame 8 and the vacuum adsorption chamber 11, and the clamping seal 10 can ensure the The tightness between the porous membrane or the proton exchange membrane 9 and the edge of the spraying hole of the vacuum adsorption chamber 11 prevents deformation due to the infiltration and penetration of the solution during the preparation of the membrane electrode. When the above frame 8 is used, the porous film or proton exchange membrane 9 will be squeezed to generate a certain pressing force on the clamping sealing ring 10, which increases the relationship between the porous film or proton exchange membrane 9 and the The frictional force between the clamping and sealing rings 10 can also ensure that the position of the porous membrane or the proton exchange membrane 9 is fixed after the vacuum adsorption force is removed.

Close the on-off valve 5 and open the pressure relief valve 4. After the pressure is released, the clamp can be separated from the joint 2, and the tool holding the porous membrane or the proton exchange membrane 9 can be clamped. Fixture 1 is placed on a heating table at a certain temperature to prepare a fuel cell CCM, and a catalytic layer is sprayed on the membrane according to a certain catalyst solution flow rate and gas pressure.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention .

Claims (6)

1. An integrated vacuum adsorption clamp for CCM preparation of a fuel cell is characterized by comprising a tool clamp, a joint and a vacuum pump;

the tool clamp comprises an upper frame and a lower frame; the upper frame is detachably arranged above the lower frame;

the lower frame comprises a vacuum adsorption cavity and a vacuum end plate which are fixedly connected, and fixing frames fixedly arranged at two ends of the vacuum adsorption cavity and the vacuum end plate;

spraying holes are formed in the middle parts of the upper frame, the vacuum adsorption cavity and the vacuum end plate; the spraying holes of the vacuum adsorption cavity are aligned with the edges of the spraying holes of the vacuum end plate;

an inner sealing ring and an outer sealing ring are arranged between the vacuum adsorption cavity and the vacuum end plate; the inner sealing ring is arranged along the edges of the vacuum adsorption cavity and the spraying holes of the vacuum end plate, and the outer sealing ring is arranged along the outer edges of the vacuum adsorption cavity and the vacuum end plate;

a circle of clamping seal ring is fixedly arranged along the edge of the spraying hole on the upper surface of the vacuum adsorption cavity;

the vacuum adsorption cavity is of a hollow structure, a plurality of through holes with uniform sizes are distributed on the upper surface of the vacuum adsorption cavity, the side surface of the vacuum adsorption cavity is provided with a gas port communicated with the inside of the vacuum adsorption cavity, the fixing frame is provided with an interface communicated with the gas port, one end of the joint is connected with the interface, and the other end of the joint is connected to the vacuum pump through a pipeline.

2. The integrated vacuum adsorption fixture for CCM production of fuel cells of claim 1, wherein a pressure gauge, a pressure relief valve and an on-off valve are further arranged on the pipeline.

3. The integrated vacuum adsorption jig for CCM preparation of fuel cells of claim 1, wherein the upper frame is provided with screw holes for detachable connection with the vacuum adsorption cavity by screws.

4. The integrated vacuum chuck for CCM production of fuel cells of claim 3, wherein the spray hole edge of the upper frame is aligned with the spray hole edge of the vacuum chuck cavity when the upper frame is mounted over the vacuum chuck cavity by the screws.

5. The integrated vacuum adsorption jig for CCM production of fuel cells of claim 1, wherein the edge of the spray hole on the upper surface of the vacuum adsorption cavity is provided with a groove for mounting the clamping sealing ring.

6. The integrated vacuum adsorption fixture for fuel cell CCM preparation of claim 5, wherein the clamping seal ring is bonded within the groove.

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