Dispensing device for membrane electrode

Abstract

The utility model discloses a dispensing device of membrane electrode relates to battery processing technical field, including mould body no. 1, cover plate body no. 2 and cover plate body no. 3, mould body no. 1 is provided with lead angle no. 1, the cover plate body no. 2 is provided with lead angle no. 1, the surface of mould body no. 1 is provided with positioning hole no. According to the utility model, the lead angle I on the outer side of the mold body I corresponds to the lead angle of the frame of the membrane electrode, so that the negative electrode and the positive electrode of the membrane electrode are prevented from being reversely placed, and the size of the embedding opening I is just consistent with the size of the frame of the membrane electrode, so that the calibration time is shortened, and the fitting precision is improved; the second cover plate body covers the first mold body at the bottom through the second positioning hole and the second lead angle, the error rate of GDL attaching is effectively reduced, and the GDL attaching speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a dispensing device for membrane electrodes. Background Art

[0002] A membrane electrode is an overall structure composed of a catalyst coated membrane, a gas diffusion layer, and some other supporting layers. The membrane electrode is the core area of the electrochemical reaction of a fuel cell, responsible for completing the hydrogen-oxygen reaction, energy conversion, and current generation. The dispensing of the membrane electrode usually refers to the process of bonding different layers together with an adhesive during the production or assembly process of the membrane electrode assembly.

[0003] However, in the prior art, dispensing is performed on the white edge area of a five-in-one catalyst coated membrane (CCM), and then a gas diffusion layer (GDL) is pasted on to form a seven-in-one. However, during the lamination process, since this step is purely manual and requires manual alignment to cover the GDL to the white edge area, it is easy to have phenomena such as exposed white edges, being pasted crooked, and low efficiency during this process, and it may even lead to a single low performance of the membrane electrode (MEA). Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems in the prior art that manual alignment is required to cover the GDL to the white edge area, and during this process, it is easy to have phenomena such as exposed white edges, being pasted crooked, and low efficiency, and it may even lead to a single low performance of the MEA, and a dispensing device for membrane electrodes is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A dispensing device for membrane electrodes, including a first mold body, a second cover body, and a third cover body. A first chamfer is provided at a corner of the first mold body, and a second chamfer is provided at a corner of the second cover body. A first positioning hole is provided on the surface of the first mold body, and a second positioning hole is provided on the surface of the second cover body. The first mold body and the second cover body are aligned for the anode and cathode through the first chamfer and the second chamfer, and the first mold body and the second cover body are positioned and aligned through the first positioning hole and the second positioning hole.

[0006] Preferably, a first embedding opening is provided on the surface of the first mold body, and a second embedding opening is provided on the surface of the second cover body.

[0007] Preferably, an embedding block is fixedly connected to one side of the third cover body, and the shape of the embedding block is adapted to the notch shape of the second embedding opening.

[0008] Preferably, an ear seat is fixedly connected to one side of the first mold body, and a rotating frame is rotatably connected to the outer side wall of the ear seat.

[0009] Preferably, one end of the rotating frame is fixedly connected with a handle, and one side of the rotating frame is fixedly connected with a pressing plate.

[0010] Preferably, the outer frame size of the cover plate body three is larger than the notch size of the embedding notch two.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, the chamfer one on the outer side of the mold body one corresponds to the chamfer of the membrane electrode frame, preventing the anode and cathode of the membrane electrode from being placed in reverse. Moreover, the size of the embedding notch one just matches the size of the membrane electrode frame, shortening the calibration time and improving the fitting accuracy. The cover plate body two covers the mold body one at the bottom through the positioning hole two and the chamfer two, effectively reducing the error rate of fitting the GDL and increasing the fitting speed of the GDL.

[0013] 2. In the present utility model, the ear seat is used as the lever support point of the rotating frame, thereby controlling the rotating frame to flip around the ear seat. The downward flipping of the rotating frame generates a pressing force on the cover plate body three, and the pressing plate evenly transmits the pressing force to the cover plate body three in an all-round manner, thereby improving the quality of fitting the membrane electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 1 is a three-dimensional structural diagram of the mold body one in a dispensing device for a membrane electrode proposed by the present utility model;

[0015] Figure 2 FIG. 2 is a three-dimensional structural diagram of the mold body one and the pressing plate in a dispensing device for a membrane electrode proposed by the present utility model;

[0016] Figure 3 FIG. 3 is a three-dimensional structural diagram of the cover plate body two in a dispensing device for a membrane electrode proposed by the present utility model;

[0017] Figure 4 FIG. 4 is a three-dimensional structural diagram of the cover plate body three in a dispensing device for a membrane electrode proposed by the present utility model;

[0018] Figure 5 FIG. 5 is a three-dimensional structural diagram of the mold body one and the cover plate body two in a dispensing device for a membrane electrode proposed by the present utility model;

[0019] Figure 6 FIG. 6 is a three-dimensional structural diagram of the mold body one, the cover plate body two and the cover plate body three in a dispensing device for a membrane electrode proposed by the present utility model;

[0020] Figure 7 FIG. 7 is an overall structural diagram of a dispensing device for a membrane electrode proposed by the present utility model.

[0021] Legend: 1. Mold body I; 10. Insertion opening I; 11. Positioning hole I; 12. Chamfer I; 2. Cover plate body II; 20. Insertion opening II; 21. Positioning hole II; 22. Chamfer II; 3. Cover plate body III; 31. Insert block; 4. Ear seat; 5. Rotating frame; 6. Pressure plate; 7. Handle. Detailed implementation

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0024] Embodiment 1: The present invention provides a dispensing device for membrane electrodes, including a mold body I 1, a cover plate body II 2 and a cover plate body III 3. A chamfer I 12 is provided at one corner of the mold body I 1, and a chamfer II 22 is provided at one corner of the cover plate body II 2. A positioning hole I 11 is provided on the surface of the mold body I 1, and a positioning hole II 21 is provided on the surface of the cover plate body II 2. The mold body I 1 and the cover plate body II 2 are aligned in terms of the cathode and anode through the chamfer I 12 and the chamfer II 22, and the mold body I 1 and the cover plate body II 2 are positioned and aligned through the positioning hole I 11 and the positioning hole II 21.

[0025] The following specifically describes the specific settings and functions of this embodiment: As Figure 1 shown is the mold body I 1 at the bottom. The five-in-one membrane electrode is placed in the mold body I 1 at the bottom. A chamfer I 12 is provided on one side of the mold body I 1, and the chamfer I 12 corresponds to the chamfer of the membrane electrode frame, preventing the cathode and anode of the membrane electrode from being placed in the wrong direction. Moreover, the size of the insertion opening I 10 is just right to match the size of the membrane electrode frame, shortening the calibration time;

[0026] As Figure 4 shown is the combined structure of the mold body I 1 and the cover plate body II 2. After dispensing the five-in-one membrane electrode by a dispensing machine, the cover plate body II 2 is covered on the mold body I 1 at the bottom through the positioning hole II 21 and the chamfer II 22. Among them, the effective processing area of the membrane electrode is reserved at the insertion opening II 20 in the middle of the cover plate body II 2;

[0027] As Figure 6Shown is the combined structure of the mold body 1, the cover plate body 2, and the cover plate body 3. Place the gas diffusion layer (GDL), which is a material located on both sides of the membrane electrode and mainly used to disperse gas to the catalytic layer to ensure that the gas evenly covers the catalyst surface and also plays a role in conducting electricity, at the recess 20 of the cover plate body 2. The GDL just covers the effective area without any blank space. Place the insert block 31 at the recess 20 and gently press it slightly; This mold is divided into three parts, including the mold body 1, the cover plate body 2, and the cover plate body 3. After combination, it effectively reduces the error rate of fitting the GDL and improves the speed of fitting the GDL.

[0028] Example 2: As Figure 1 - Figure 7 Shown in the figure, a recess 10 is provided on the surface of the mold body 1, and a recess 20 is provided on the surface of the cover plate body 2. One side of the cover plate body 3 is fixedly connected with an insert block 31, and the shape of the insert block 31 is adapted to the notch shape of the recess 20. One side of the mold body 1 is fixedly connected with an ear seat 4, and the outer side wall of the ear seat 4 is rotatably connected with a rotating frame 5. One end of the rotating frame 5 is fixedly connected with a handle 7, and one side of the rotating frame 5 is fixedly connected with a pressing plate 6. The outer frame size of the cover plate body 3 is larger than the notch size of the recess 20.

[0029] The effect achieved by the entire example is that the size of the recess 10 is larger than that of the recess 20. The area of the recess 10 is used to place the membrane electrode, and the recess 20 is used to reserve the effective processing area of the membrane electrode. The size of the insert block 31 is adapted to the size of the recess 20 to ensure that the insert block 31 can be completely embedded in the recess 20 for light pressing processing. The outer size of the cover plate body 3 is larger than the size of the recess 20, so that the cover plate body 3 and the insert block 31 form a T-shaped structure, which is convenient to take. In order to fully fit the cover plate body 3 for pressing and ensure that the force is more uniform when pressing the cover plate body 3 for processing the membrane electrode in the recess 20, an ear seat 4 is provided on one side of the mold body 1, and the ear seat 4 is used as the lever support point of the rotating frame 5, so as to control the rotating frame 5 to flip around the ear seat 4. The downward flipping of the rotating frame 5 generates a pressing force on the cover plate body 3, and the pressing force is evenly transmitted to the cover plate body 3 through the pressing plate 6, thereby improving the quality of fitting the membrane electrode.

[0030] Usage method and working principle of this device: Place the five-in-one membrane electrode into the bottom mold body 1. By making the guide angle 12 correspond to the guide angle of the membrane electrode frame, after dispensing glue on the five-in-one membrane electrode with a glue dispenser, cover the bottom mold body 1 with the cover body 2 through the positioning hole 21 and the guide angle 22. Place the GDL at the notch 20 of the cover body 2, and the GDL just covers the effective area of the notch 20 without leaving any blank. Place the insert block 31 at the notch 20, hold the handle 7 and dial the rotating frame 5 downward to control the rotating frame 5 to flip around the ear seat 4. Use the downward flipping of the rotating frame 5 to generate a force for pressing the cover body 3, and transfer the pressing force evenly to the cover body 3 through the pressure plate 6 to achieve the effect of laminating the GDL.

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A dispensing device for a membrane electrode, comprising a first mold body (1), a second cover plate body (2) and a third cover plate body (3), characterized in that: A chamfer one (12) is provided at a corner of the mold body one (1), a chamfer two (22) is provided at a corner of the cover plate body two (2), a positioning hole one (11) is provided on the surface of the mold body one (1), a positioning hole two (21) is provided on the surface of the cover plate body two (2), the mold body one (1) and the cover plate body two (2) are aligned in terms of anode and cathode through the chamfer one (12) and the chamfer two (22), and the mold body one (1) and the cover plate body two (2) are positioned and aligned through the positioning hole one (11) and the positioning hole two (21).

2. The dispensing device for a membrane electrode according to claim 1, characterized in that: A socket one (10) is provided on the surface of the mold body one (1), and a socket two (20) is provided on the surface of the cover plate body two (2).

3. The dispensing device for a membrane electrode according to claim 1, characterized in that: A fitting block (31) is fixedly connected to one side of the cover plate body three (3), and the shape of the fitting block (31) is adapted to the notch shape of the socket two (20).

4. The dispensing device for a membrane electrode according to claim 1, characterized in that: An ear seat (4) is fixedly connected to one side of the mold body one (1), and a rotating frame (5) is rotatably connected to the outer side wall of the ear seat (4).

5. The dispensing device for a membrane electrode according to claim 4, characterized in that: A handle (7) is fixedly connected to one end of the rotating frame (5), and a pressing plate (6) is fixedly connected to one side of the rotating frame (5).

6. The dispensing device for a membrane electrode according to claim 1, characterized in that: The outer frame size of the cover plate body three (3) is larger than the notch size of the socket two (20).

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