GDL laminating jig

Abstract

The utility model discloses a GDL attaching jig which enables an anode GDL and a cathode GDL to be reliably attached to the surfaces of the corresponding sides of a CCM, ensures accurate and reliable positioning and accurate and reliable assembly, and ensures the overall performance of a membrane electrode. The jig plate comprises a jig plate body, concave carbon paper positioning grooves are formed in the surface of the jig plate body, the carbon paper positioning grooves at least comprise an anode carbon paper positioning groove and a cathode carbon paper positioning groove, and the upper portion and the lower portion, corresponding to each carbon paper positioning groove, of the jig plate body are each provided with a hand taking notch. The two sides, corresponding to each carbon paper positioning groove, of the jig plate body are each provided with a protruding positioning column, and the positions of the protruding positioning columns correspond to positioning holes in the two corresponding sides of a CCM frame. And the shape and the concave depth of the carbon paper positioning groove are determined according to the carbon paper of the correspondingly assembled anode gas diffusion layer.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a GDL laminating jig. Background Art

[0002] The membrane electrode is in the upstream of the fuel cell and is composed of an electrolyte membrane (proton exchange membrane), a catalyst, and a gas diffusion layer. Among them, the catalyst is generally composed of a catalyst-coated film structure. In order to conduct the assembly test of the membrane electrode, the CCM includes a three-layer structure: an anode catalyst layer, a proton exchange membrane, and a cathode catalyst layer. When it is necessary to complete the assembly of the membrane electrode and conduct a test, the carbon papers (GDLs) of the anode and cathode need to be respectively laminated on the frames of the catalyst-coated films (CCMs). The existing methods are all to directly lay the carbon papers (GDLs) manually on the frames of the catalyst-coated films (CCMs). Due to the direct manual laying, it is easy to have the situation that the GDL is offset, which further leads to the occurrence of assembly misalignment and affects the overall performance of the membrane electrode. Content of the Utility Model

[0003] Aiming at the above problems, the utility model provides a GDL laminating jig, which reliably laminates the anode GDL and the cathode GDL on the corresponding side surfaces of the CCM, ensures accurate and reliable positioning, ensures precise and reliable assembly, and ensures the overall performance of the membrane electrode.

[0004] A GDL laminating jig, characterized in that: it includes a jig plate body, and a concave carbon paper positioning groove is arranged on the surface of the jig plate body. The carbon paper positioning groove at least includes an anode carbon paper positioning groove and a cathode carbon paper positioning groove. At the upper and lower positions corresponding to each carbon paper positioning groove of the jig plate body, a handle notch is arranged respectively. On both sides of each carbon paper positioning groove of the jig plate body, a protruding positioning post is arranged respectively. The positions of the protruding positioning posts correspond to the corresponding two-side positioning holes of the CCM frame;

[0005] The shape and the concave depth of the carbon paper positioning groove are determined according to the carbon paper of the corresponding assembled anode gas diffusion layer.

[0006] It is further characterized in that:

[0007] On the surface of the jig plate body, there is an anode carbon paper positioning groove and a cathode carbon paper positioning groove. The anode carbon paper positioning groove and the cathode carbon paper positioning groove are used for assembling operations corresponding to the same type of membrane electrode. At the upper and lower positions corresponding to the anode carbon paper positioning groove on the jig plate body, there is a handle notch respectively. On both sides of the jig plate body corresponding to the anode carbon paper positioning groove, there is a protruding positioning post respectively. At the upper and lower positions corresponding to the cathode carbon paper positioning groove on the jig plate body, there is a handle notch respectively. On both sides of the jig plate body corresponding to the cathode carbon paper positioning groove, there is a protruding positioning post respectively;

[0008] The anode carbon paper positioning groove and the cathode carbon paper positioning groove are horizontally arranged at intervals left and right;

[0009] Or the anode carbon paper positioning groove and the cathode carbon paper positioning groove are vertically arranged at intervals up and down;

[0010] The shapes of the handle notches at the upper and lower positions corresponding to the same carbon paper positioning groove are the same;

[0011] The positioning holes on both sides of the CCM frame are of an asymmetric structure, which are respectively arranged at the upper and lower positions of the longitudinal horizontal center line. The positions of the protruding positioning posts corresponding to the anode carbon paper positioning groove and the cathode carbon paper positioning groove correspond to the corresponding positioning holes on both sides of the CCM frame, so that the GDL of the anode and cathode can be reliably distinguished;

[0012] The material of the jig plate body is acrylic plate, bakelite board or aluminum plate;

[0013] The positioning post is a structure that protrudes upward by being fixedly connected by a stud at the bottom. The bottom of the positioning post is a stud structure. The jig plate body is provided with a concave screw hole at the position corresponding to the positioning post, which ensures the quick installation of the positioning post.

[0014] A method for using a GDL laminating jig, characterized in that:

[0015] Place the anode gas diffusion layer in the anode carbon paper positioning groove. Then, stick a strip of adhesive tape on any surface of the outer frame of the anode side of the prepared CCM. Sleeve the positioning holes on the CCM frame on the corresponding positioning posts of the anode GDL laminating jig, so that the anode gas diffusion layer is laminated on the surface of the anode catalyst layer. Then, remove the CCM frame that has completed the lamination of the anode gas diffusion layer;

[0016] Place the cathode gas diffusion layer in the cathode carbon paper positioning groove. Then, stick a strip of adhesive tape on any side of the outer frame of the cathode surface of the CCM frame where the anode gas diffusion layer has been attached. Align the positioning holes on the CCM frame with the corresponding positioning posts of the cathode GDL fitting jig, so that the cathode gas diffusion layer fits on the surface of the cathode catalyst layer. After that, remove the assembled five-layer membrane electrode from the jig plate body.

[0017] It is further characterized in that:

[0018] The adhesive tape is an acrylic adhesive tape, and the sticking area of the adhesive tape is in the carbon paper area outside the catalyst layer, and its sticking positioning is accurate and reliable.

[0019] After adopting the above technical solution, the anode surface of the CCM and the anode gas diffusion layer pre-placed in the anode carbon paper positioning groove are fitted by aligning the corresponding positioning posts and positioning holes. Then, the cathode surface of the CCM with the anode gas diffusion layer attached and the cathode gas diffusion layer pre-placed in the cathode carbon paper positioning groove are fitted by aligning the corresponding positioning posts and positioning holes, thus completing the production of the membrane electrode; its take-off notch facilitates the operator to remove the jig plate body, facilitating rapid operation; it reliably attaches the anode GDL and the cathode GDL to the corresponding side surfaces of the CCM, ensuring accurate and reliable positioning, ensuring precise and reliable assembly, and ensuring the overall performance of the membrane electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic front view structure diagram of the present invention;

[0021] Figure 2 It is a schematic three-dimensional structure diagram of the present invention;

[0022] Figure 3 For Figure 1 The A-A cross-sectional structure diagram of;

[0023] Figure 4 It is a flow chart of the method corresponding to the present invention;

[0024] The names corresponding to the serial numbers in the figure are as follows:

[0025] Anode carbon paper positioning groove 1, cathode carbon paper positioning groove 2, take-off notch 3, positioning post 4, longitudinal horizontal center line 5;

[0026] Jig plate body 10, CCM frame 20, positioning hole 21, carbon paper 30, anode GDL fitting jig 40, cathode GDL fitting jig 50, anode catalyst layer 60, cathode catalyst layer 70, adhesive tape 80. DETAILED DESCRIPTION OF THE INVENTION

[0027] A GDL fitting jig, see Figures 1 - 4: It includes a jig plate body 10. An inwardly concave carbon paper positioning groove is provided on the surface of the jig plate body 10. The carbon paper positioning groove includes at least one anode carbon paper positioning groove 1 and one cathode carbon paper positioning groove 2. At the upper and lower positions corresponding to each carbon paper positioning groove on the jig plate body 10, a handle notch 3 is provided respectively. On both sides of each carbon paper positioning groove on the jig plate body 10, a protruding positioning post 4 is provided respectively. The position of the protruding positioning post 4 corresponds to the corresponding two-side positioning holes 21 of the CCM frame 20;

[0028] The shape and inward concave depth of the carbon paper positioning groove are determined according to the carbon paper 30 of the corresponding assembled anode gas diffusion layer.

[0029] During specific implementation,

[0030] On the surface of the jig plate body 10, there is one anode carbon paper positioning groove 1 and one cathode carbon paper positioning groove 2. The anode carbon paper positioning groove 1 and the cathode carbon paper positioning groove 2 are carbon paper positioning grooves with the same shape, and the size is 56.2mm * 56.2mm * 1mm (L * W * D); the anode carbon paper positioning groove 1 and the cathode carbon paper positioning groove 2 are arranged horizontally and laterally at intervals;

[0031] The shapes of the four handle notches 3 are the same, and the sizes are all 20mm * 13mm * 2.5mm (L * W * D), which is convenient for taking out the jig plate body after the carbon paper is attached;

[0032] The two-side positioning holes 21 of the CCM frame 20 are of an asymmetric structure, and they are respectively arranged at the upper and lower positions of the longitudinal horizontal center line 5. The positions of the protruding positioning posts 4 corresponding to the anode carbon paper positioning groove 1 and the cathode carbon paper positioning groove 2 correspond to the corresponding two-side positioning holes 21 of the CCM frame 20, so that the GDL of the anode and cathode can be reliably distinguished;

[0033] The material of the jig plate body 10 is acrylic plate, bakelite board or aluminum plate;

[0034] The positioning post 4 is a structure that protrudes upward by being fixedly connected by a stud below. The bottom of the positioning post 4 is a stud structure. The jig plate body 10 is provided with an inwardly concave screw hole corresponding to the position of the positioning post, which ensures the quick installation of the positioning post. The upward protruding size of the positioning post is a structure with a diameter of 3mm * a height of 2.5mm.

[0035] A usage method of a GDL laminating jig, see Figure 4: Place the carbon paper 30 corresponding to the anode gas diffusion layer in the anode carbon paper positioning groove 1. Then, stick an adhesive strip 80 on any surface of the outer frame of the anode side of the prepared CCM frame 20. Align the positioning holes on the CCM frame 20 with the corresponding positioning posts 4 of the anode GDL bonding fixture 40, so that the carbon paper 30 corresponding to the anode gas diffusion layer is bonded to the surface of the anode catalyst layer 60. After that, remove the CCM frame 20 that has completed the bonding of the anode gas diffusion layer;

[0036] Place the carbon paper 30 corresponding to the cathode gas diffusion layer in the cathode carbon paper positioning groove 2. Then, stick an adhesive strip on any surface of the outer frame of the cathode side of the CCM frame 20 that has completed the bonding of the anode gas diffusion layer. Align the positioning holes 21 on the CCM frame 20 with the corresponding positioning posts 4 of the cathode GDL bonding fixture 50, so that the cathode gas diffusion layer is bonded to the surface of the cathode catalyst layer 70. After that, remove the assembled five-layer membrane electrode and detach it from the fixture plate body.

[0037] Specifically, the adhesive strip 80 is an acrylic adhesive strip. The sticking area of the adhesive strip 80 is in the carbon paper area outside the catalyst layer. Its sticking and positioning are accurate and reliable. The size of the adhesive strip 80 is acrylic glue with a width of 2 mm * a length of 50 mm * a thickness of 20 μm.

[0038] The anode GDL bonding fixture 40 and the cathode GDL bonding fixture 50 are a pair of fixture structures on the same fixture plate body, which ensures that the anode and cathode GDL bonding fixtures can be directly obtained without searching.

[0039] Bond the anode side of the CCM and the anode gas diffusion layer pre-placed in the anode carbon paper positioning groove through the corresponding positioning posts and positioning holes. Then, bond the cathode side of the CCM with the anode gas diffusion layer already bonded and the cathode gas diffusion layer pre-placed in the cathode carbon paper positioning groove through the corresponding positioning posts and positioning holes, thus completing the production of the membrane electrode; its take-off notch facilitates the operator to remove the fixture plate body and is convenient for rapid operation; it reliably bonds the anode GDL and the cathode GDL on the corresponding side surfaces of the CCM, ensuring accurate and reliable positioning, ensuring precise and reliable assembly, and ensuring the overall performance of the membrane electrode.

[0040] Specifically, the carbon paper of the cathode gas diffusion layer can also be bonded first, and then the carbon paper of the anode gas diffusion layer. Their functional principles are the same.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A GDL laminating jig, characterized in that: It includes a fixture plate body, on the surface of which there are concave carbon paper positioning grooves. The carbon paper positioning grooves include at least one anode carbon paper positioning groove and one cathode carbon paper positioning groove. At the upper and lower positions corresponding to each carbon paper positioning groove on the fixture plate body, there is a handle notch respectively. On both sides of each carbon paper positioning groove on the fixture plate body, there is a protruding positioning post, and the position of the protruding positioning post corresponds to the positioning holes on the corresponding two sides of the CCM frame. The shape and concave depth of the carbon paper positioning groove are determined according to the carbon paper of the corresponding assembled anode gas diffusion layer.

2. The GDL bonding fixture according to claim 1, characterized in that: On the surface of the fixture plate body, there is one anode carbon paper positioning groove and one cathode carbon paper positioning groove. The anode carbon paper positioning groove and the cathode carbon paper positioning groove are used for the assembly operation of the same type of membrane electrode. At the upper and lower positions corresponding to the anode carbon paper positioning groove on the fixture plate body, there is a handle notch respectively. On both sides of the anode carbon paper positioning groove on the fixture plate body, there is a protruding positioning post respectively. At the upper and lower positions corresponding to the cathode carbon paper positioning groove on the fixture plate body, there is a handle notch respectively. On both sides of the cathode carbon paper positioning groove on the fixture plate body, there is a protruding positioning post respectively.

3. The GDL laminating jig according to claim 2, characterized in that: The anode carbon paper positioning groove and the cathode carbon paper positioning groove are arranged horizontally and laterally at intervals.

4. A GDL laminating fixture according to claim 2, characterized in that: The anode carbon paper positioning groove and the cathode carbon paper positioning groove are arranged vertically and at intervals.

5. The GDL laminating fixture according to claim 2, characterized in that: The shapes of the handle notches at the upper and lower positions corresponding to the same carbon paper positioning groove are the same.

6. The GDL laminating fixture according to claim 1, wherein: The positioning holes on the two sides of the CCM frame are of an asymmetric structure, which are respectively arranged at the upper and lower positions of the longitudinal horizontal center line. The positions of the protruding positioning posts corresponding to the anode carbon paper positioning groove and the cathode carbon paper positioning groove correspond to the positioning holes on the corresponding two sides of the CCM frame.

7. The GDL bonding fixture according to claim 1, wherein: The material of the fixture plate body is acrylic plate, bakelite board or aluminum plate.

8. A GDL laminating jig according to claim 1, wherein: The positioning post is a structure that protrudes upward by being fixedly connected by a stud at the lower part. The bottom of the positioning post is a stud structure, and the fixture plate body is provided with a concave screw hole at the position corresponding to the positioning post.

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