WO2023077636A1

WO2023077636A1 - Roller cutter process for mea product

Info

Publication number: WO2023077636A1
Application number: PCT/CN2021/140511
Authority: WO
Inventors: 王春生; 庞从武
Original assignee: 苏州安洁科技股份有限公司
Priority date: 2021-11-08
Filing date: 2021-12-22
Publication date: 2023-05-11
Also published as: CN114024011B; CN114024011A

Abstract

The present invention provides a roller cutter process for a membrane electrode assembly (MEA) product. By means of a plurality of roller cutters, a MEA product is assembled by means of a production line, such that reliable product alignment is ensured, production efficiency is ensured, and product yield is ensured. The roller cutter process for a MEA product comprises the following steps: a, punching a shape of a cathode rubber frame by means of a first set of roller cutters; b, compositing a cathode gas diffusion layer (GDL) material roll to the lower surface of the cathode rubber frame, and punching a shape of a cathode GDL by means of a fourth roller cutter at an upper portion; c, passing a cathode PEN material roll through a first independent guide roller set and a second roller cutter set at an upper portion to form a hollow-out region corresponding to the cathode GDL, and compositing the cathode PEN material roll to the upper surface of the cathode rubber frame; and d, passing a proton exchange membrane (PEM), provided with two printing layers, through a second independent guide roller set and a seventh roller cutter at an upper portion to form a PEM having a corresponding shape, and compositing a lower CL of the PEM to an upper layer of the cathode PEN material roll.

Description

A roller knife process for MEA products

technical field

The invention relates to the technical field of membrane electrode production, in particular to a roller knife process for MEA products.

Background technique

The structural explosion diagram of membrane electrode products (referred to as MEA products) is shown in Figure 16, which includes an anode part, a PEM proton exchange membrane, and a cathode part. Frame, GDL gas diffusion layer, and the upper and lower surfaces of the PEM proton exchange membrane are printed with corresponding CL layers. In the prior art, when making membrane electrodes, it is necessary to make the anode part and the cathode part through independent production lines, and then combine them with Double-layer printed PEM proton exchange membrane with a CL layer is compounded. In this process, because it is not operated on the same production line, several transfer and alignment processes are required, which makes the production efficiency low, and the alignment is easy to produce errors, which leads to poor quality. The rate is higher.

Contents of the invention

In view of the above problems, the present invention provides a roller knife process for MEA products, which assembles membrane electrode products through a production line through several roller knives, ensuring reliable product alignment, production efficiency, and yield .

A kind of MEA product roller knife technology is characterized in that, it comprises the steps:

a The shape of the cathode plastic frame is punched out by the first group of roller knives;

b Composite the cathode GDL gas diffusion material roll on the lower surface of the cathode plastic frame, and punch out the shape of the cathode GDL gas diffusion layer through the fourth roller knife on the upper part;

c Pass the cathode PEN roll through the upper first independent guide roller group and the second roller cutter set to form a hollow area corresponding to the cathode GDL gas diffusion layer, and compound the cathode PEN roll on the upper surface of the cathode plastic frame;

d. Form the PEM proton exchange membrane of the corresponding shape through the second independent guide roller group and the seventh roller knife on the upper part, and combine the lower layer CL layer of the PEM proton exchange membrane with the cathode PEN the upper layer of the roll;

e pass the anode PEN roll through the upper third independent guide roller group and the third roller knife set to form a hollow area corresponding to the anode GDL gas diffusion layer, and compound the anode PEN roll on the upper CL layer of the PEM proton exchange membrane On the upper surface, at the same time, the anode PEN coil and the cathode PEN coil are composited in position;

f Punch out the anode PEN frame and the cathode PEN frame corresponding to the anode PEN roll and the cathode PEN roll through the tenth roller knife;

g punch out the shape of the anode plastic frame through the fourth independent guide roller group and the fourth roller knife group located on the upper layer, and compound the anode plastic frame on the upper surface of the anode PEN frame;

h Die out the shape of the anode GDL gas diffusion layer corresponding to the anode GDL gas diffusion material roll through the fourteenth roller knife located above the production line, and compound the anode GDL gas diffusion layer on the anode plastic frame on the production line surface.

It is further characterized by:

In step a, the first group of roller knives includes a first roller knife, a second roller knife, and a third roller knife, which are punched out of the two sides of the cathode plastic frame by two spaced first PSA adhesive strips through the first roller knife Side strips, and then jump-cut the first double-sided adhesive strips through the second roller knife, so that the first double-sided adhesive strips cover the two ends of the PSA edge strips at intervals, and at the same time, die-cut the double-sided adhesive strips at both ends through the third roller knife Make the corresponding shape, so that the PSA edge strips on both sides and the double-sided adhesive strips on both ends are combined to form a cathodic plastic frame;

In step a, the first double-sided adhesive tape is carried out by the roller set above the production line for skip punching;

In step b, the area of the cathode GDL gas diffusion layer is greater than the area of the cathode plastic frame, so the fourth roller knife punches from top to bottom and completes, and does not punch the cathode plastic frame;

In step c, the second roller cutter set includes the fifth roller cutter and the sixth roller cutter, and the first independent guide roller group includes the cathode PEN material roll-in roll, and the cathode PEN material roll-in roll drives the cathode PEN material roll from behind to Pass the fifth roller knife and the sixth roller knife before, and then compound with the upper surface of the cathode rubber frame, in which the fifth roller knife is used for punching, and the sixth roller knife is used for waste discharge operation;

In step d, the PEM proton exchange membrane with the double-layer printing layer is conveyed by the second independent guide roller group, and the PEM proton exchange membrane of the corresponding shape is formed by the seventh roller knife, and the lower bottom film of the PEM proton exchange membrane is discharged. The lower CL layer of the PEM proton exchange membrane is compounded on the upper layer of the cathode PEN roll;

In step e, the third roller knife set includes the eighth roller knife and the ninth roller knife, and the third independent guide roller set includes the anode PEN material roll-in roll, and the anode PEN material roll-in roll drives the anode PEN material roll from the rear Pass through the eighth roller knife and the ninth roller knife before, and then compound with the upper surface of the upper CL layer of the PEM proton exchange membrane, where the eighth roller knife is used for punching, and the ninth roller knife is used for waste discharge operations;

In step g, the fourth independent guide roller group includes the first upper layer roller group and the second upper layer roller group, and the fourth roller knife group includes the eleventh roller knife, the twelfth roller knife, and the thirteenth roller knife, so The second upper layer roller group is positioned at the top of the first upper layer roller group, and the first upper layer roller group is located at the top of the corresponding position of the roller group on the production line, and the first upper layer roller group includes the second PSA rubber strip feeding roller, The second PSA rubber strip feeding roller drives the second PSA rubber strip to feed from the back to the front, and punches out the side strips of the anode rubber frame through the eleventh roller knife, and the second upper roller group is located on the second PSA rubber strip for conveying In the middle part of the relative front, the second upper layer roller set passes through the twelfth roller knife for jump cutting and conveying the second double-sided adhesive strip, so that the second double-sided adhesive strip covers the two ends of the second PSA edge strip at intervals At the same time, the thirteenth roller knife located at the opposite front of the first upper roller group punches out the corresponding shapes of the double-sided adhesive strips at both ends, so that the PSA edge strips on both sides and the double-sided adhesive strips at both ends are combined to form an anode plastic frame , and finally the anode plastic frame is transported to the production line, and the anode plastic frame is composited on the upper surface of the anode PEN frame;

In step a and step g, two rolls of strip-shaped PSA adhesive strips are used to process the side strips on both sides, so that raw materials can be saved, and the double-sided adhesive strips in steps a and step g are compounded at both ends of the length of the PSA side strips by jump cutting, Further save raw materials;

In step d, the printing material is placed on the membrane surface of the PEM proton exchange membrane, and then the printing material is passed through the corresponding gap by the heating device, so that both sides of the PEM proton exchange membrane are provided with printing layers, which saves external production processes.

After adopting the above technical solution, it assembles the membrane electrode products through a production line through several roller knives, which ensures reliable product alignment, production efficiency and yield rate.

Description of drawings

Fig. 1 is the schematic flow sheet (left section) of process of the present invention;

Fig. 2 is the schematic flow sheet (middle section) of process of the present invention;

Fig. 3 is the schematic flow sheet (right section) of process of the present invention;

Fig. 4 is the expansion diagram of the first roller knife;

Fig. 5 is the expanded view of the second roller knife;

Fig. 6 is the expansion diagram of the third roller knife;

Fig. 7 is the expansion diagram of the fourth roller knife;

Fig. 8 is the fifth roller knife expanded view;

Fig. 9 is an expanded view of the sixth roller knife;

Fig. 10 is the expansion diagram of the seventh roller knife;

Fig. 11 is the eighth roller cutter unfolded view;

Fig. 12 is the unfolded view of the ninth roller knife;

Fig. 13 is an expanded view of the tenth roller knife;

Fig. 14 is an expanded view of the eleventh roller knife;

Fig. 15 is the expanded view of the twelfth roller knife;

Figure 16 is an expanded view of the thirteenth roller knife;

Figure 17 is an expanded view of the fourteenth roller knife;

Fig. 18 is an exploded view of a product corresponding to the present invention;

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

Cathode GDL gas diffusion layer 1, cathode plastic frame 2, cathode PEN frame 3, PEM proton exchange membrane 4, lower CL layer 41, upper CL layer 42, anode PEN frame 5, anode plastic frame 6, anode GDL gas diffusion layer 7;

Cathode GDL gas diffusion material volume 10, cathode PEN material volume 20, anode PEN material volume 30, first PSA adhesive strip 40, first double-sided adhesive strip 50, second PSA adhesive strip 60, second double-sided adhesive strip 70, Anode GDL gas diffusion material roll 80, PEM proton exchange membrane roll material 90, heating device 100;

The first roll knife T1, the second roll knife T2, the third roll knife T3, the fourth roll knife T4, the fifth roll knife T5, the sixth roll knife T6, the seventh roll knife T7, the eighth roll knife T8, the ninth roll knife Roll knife T9, tenth roll knife T10, eleventh roll knife T11, twelfth roll knife T12, thirteenth roll knife T13, fourteenth roll knife T14.

Detailed ways

A kind of MEA product roller knife process, see Fig. 1-Fig. 18, it comprises the steps:

a. Die out the shape of the cathode plastic frame 2 by the first group of roller knives;

b Composite the cathode GDL gas diffusion material roll 10 on the lower surface of the cathode plastic frame 2, and punch out the shape of the cathode GDL gas diffusion layer 1 through the fourth roller knife T4 on the upper part;

c Pass the cathode PEN roll 20 through the upper first independent guide roller group and the second roller knife set to form a hollow area corresponding to the cathode GDL gas diffusion layer 1, and compound the cathode PEN roll 20 on the cathode glue frame 2 surface;

d The PEM proton exchange membrane roll stock 90 that double-layer is provided with printing layer passes the second independent guide roller group of top, the seventh roller knife T7 to form the PEM proton exchange membrane 4 of corresponding shape, and the lower layer of PEM proton exchange membrane 4 The CL layer 41 is compounded on the upper layer of the cathode PEN roll 20;

e form the hollow area corresponding to the anode GDL gas diffusion layer 7 by passing the anode PEN material coil 30 through the third independent guide roller group and the third roller knife group on the upper part, and compound the anode PEN material coil 30 on the PEM proton exchange membrane 4 On the upper surface of the upper CL layer 42, the anode PEN coil 30 and the cathode PEN coil 20 are compounded in parallel;

f Punch out the anode PEN frame 5 and the cathode PEN frame 3 corresponding to the anode PEN roll 30 and the cathode PEN roll 20 through the tenth roller knife T7;

g punch out the shape of the anode plastic frame 6 through the fourth independent guide roller group and the fourth roller knife group located on the upper layer, and compound the anode plastic frame 6 on the upper surface of the anode PEN frame 5;

h The shape of the anode GDL gas diffusion layer 7 corresponding to the anode GDL gas diffusion material volume 80 is punched out by the fourteenth roller knife T14 located above the production line, and the anode GDL gas diffusion layer 7 is compounded on the anode on the production line The upper surface of the plastic frame 6.

When implementing it:

In step a, the first group of roller knives includes a first roller knife T1, a second roller knife T2, and a third roller knife T3, which pass through two spaced first PSA adhesive strips 40 and punch out the cathode through the first roller knife T1 The side strips on both sides of the rubber frame 2, and then jump-cut the first double-sided adhesive strip 50 through the second roller knife T2, so that the first double-sided adhesive strip 50 covers the two ends of the PSA side strip at intervals, and pass through the third roller knife at the same time. T3 die-cuts the double-sided adhesive strips at both ends into corresponding shapes, so that the PSA edge strips on both sides and the double-sided adhesive strips at both ends are combined to form the cathode adhesive frame 2;

In step a, the first double-sided adhesive strip 50 is skipped and punched through the roller group above the production line;

In step b, the area of the cathode GDL gas diffusion layer 1 is larger than the area of the cathode plastic frame 2, so the fourth roller knife T4 punches from top to bottom and does not punch the cathode plastic frame;

In step c, the second roller cutter set includes the fifth roller cutter T5 and the sixth roller cutter T6, and the first independent guide roller group includes the cathode PEN material roll-in roll, and the cathode PEN material roll-in roll drives the cathode PEN material roll 20 Pass the fifth roller knife T5 and the sixth roller knife T6 from back to front, and then work together with the upper surface of the cathode rubber frame 2, where the fifth roller knife T5 is used for punching, and the sixth roller knife T6 is used for waste discharge operations ;

In step d, the PEM proton exchange membrane 4 with the double-layer printing layer is conveyed by the second independent guide roller group, and the PEM proton exchange membrane 4 of the corresponding shape is formed by the seventh roller knife T7, the lower bottom film of the PEM proton exchange membrane The lower layer CL layer 41 of the PEM proton exchange membrane 4 is composited on the upper layer of the cathode PEN material roll 20 after the waste is discharged;

In step e, the third roller knife group includes the eighth roller knife T8 and the ninth roller knife T9, and the third independent guide roller group includes the anode PEN material roll-in roll, and the anode PEN material roll-in roll drives the anode PEN material roll 30 Pass the eighth roll knife T8, the ninth roll knife T9 from back to front, and then compound with the upper surface of the upper CL layer 42 of the PEM proton exchange membrane 4, wherein the eighth roll knife T8 is used for punching, and the ninth roll knife T9 For waste disposal operations;

In step g, the fourth independent guide roller group includes the first upper layer roller group and the second upper layer roller group, and the fourth roller knife group includes the eleventh roller knife T11, the twelfth roller knife T12, and the thirteenth roller knife T13, The second upper roller group is positioned at the top of the first upper roller group, and the first upper roller group is positioned at the top of the corresponding position of the roller group on the production line. The rubber strip feeding roller drives the second PSA rubber strip 60 to feed from back to front, and punches out the side strips on both sides of the anode rubber frame 6 through the eleventh roller knife T11. The second upper roller group is located on the second PSA rubber strip 60 In the middle part relative to the front of the conveying, the second upper layer roller group passes through the twelfth roller knife T12, which is used for jump cutting and conveying the second double-sided adhesive strip 70, so that the second double-sided adhesive strip 70 covers the second PSA edge strip at intervals At both ends, the thirteenth roller knife T13 located at the opposite front of the first upper roller set punches out the corresponding shapes of the double-sided adhesive strips at both ends, so that the PSA edge strips on both sides and the double-sided adhesive strips at both ends are combined to form The anode plastic frame 6, and finally the anode plastic frame 6 is transported to the production line, and the anode plastic frame 6 is compounded on the upper surface of the anode PEN frame 5;

In step d, the membrane surface of the PEM proton exchange membrane 4 is provided with printing material, and after the printing material is passed through the corresponding gap through the heating device 100, the both sides of the PEM proton exchange membrane 4 are provided with a printing layer, which saves external Production processes.

The serial numbers 1-40 below the work rolls in the figure are the corresponding roll group numbers, ensuring smooth placement of coil materials.

It uses a number of roller knives to assemble the membrane electrode products through a production line, which ensures reliable product alignment, production efficiency and yield.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims

A kind of MEA product roller knife technology is characterized in that, it comprises the steps:

a The shape of the cathode plastic frame is punched out by the first group of roller knives;

b Composite the cathode GDL gas diffusion material roll on the lower surface of the cathode plastic frame, and punch out the shape of the cathode GDL gas diffusion layer through the fourth roller knife on the upper part;

c Pass the cathode PEN roll through the upper first independent guide roller group and the second roller knife set to form a hollow area corresponding to the cathode GDL gas diffusion layer, and compound the cathode PEN roll on the upper surface of the cathode plastic frame;

d. Form the PEM proton exchange membrane of the corresponding shape through the second independent guide roller group and the seventh roller knife on the upper part, and combine the lower layer CL layer of the PEM proton exchange membrane with the cathode PEN the upper layer of the roll;

e pass the anode PEN roll through the upper third independent guide roller group and the third roller knife set to form a hollow area corresponding to the anode GDL gas diffusion layer, and compound the anode PEN roll on the upper CL layer of the PEM proton exchange membrane On the upper surface, at the same time, the anode PEN coil and the cathode PEN coil are composited in position;

f Punch out the anode PEN frame and the cathode PEN frame corresponding to the anode PEN roll and the cathode PEN roll through the tenth roller knife;

g punch out the shape of the anode plastic frame through the fourth independent guide roller group and the fourth roller knife group located on the upper layer, and compound the anode plastic frame on the upper surface of the anode PEN frame;

h Die out the shape of the anode GDL gas diffusion layer corresponding to the anode GDL gas diffusion material roll through the fourteenth roller knife located above the production line, and compound the anode GDL gas diffusion layer on the anode plastic frame on the production line surface.
A kind of MEA product roller knife process as claimed in claim 1, is characterized in that: in step a, the first group of roller knife comprises the first roller knife, the second roller knife, the 3rd roller knife, and it passes two intervals The first PSA rubber strip is punched out of the side strips on both sides of the cathode rubber frame by the first roller knife, and then the first double-sided rubber strip is cut by the second roller knife, so that the first double-sided rubber strip covers the PSA side strips at intervals At the same time, the double-sided adhesive strips at both ends are punched into corresponding shapes by the third roller knife, so that the PSA edge strips on both sides and the double-sided adhesive strips at both ends are combined to form a cathodic adhesive frame.
A roller knife process for MEA products as claimed in claim 2, characterized in that: in step a, the first double-sided adhesive strip passes through the roller group above the production line to perform skip punching operations.
A kind of MEA product roller knife process as claimed in claim 1, it is characterized in that: in the step b, the area of the cathode GDL gas diffusion layer is greater than the area of the cathode plastic frame, so the fourth roller knife punches from top to bottom to complete, Does not die-cut the cathodic gel frame.
The roller knife process for MEA products according to claim 1, wherein in step c, the second roller knife group includes the fifth roller knife and the sixth roller knife, and the first independent guide roller group includes the cathode PEN roll Feeding roller, the cathode PEN material is rolled into the material roller to drive the cathode PEN material roll to pass through the fifth roller knife and the sixth roller knife from back to front, and then compound with the upper surface of the cathode rubber frame. The fifth roller knife is used for punching cutting, the sixth roller knife is used for waste discharge operations.
A kind of MEA product roller knife process as claimed in claim 1, it is characterized in that: in step d, the PEM proton exchange membrane with double-layer printing layer is transported by the second independent guide roller group, and is formed by the seventh roller knife The PEM proton exchange membrane of corresponding shape, the lower layer CL layer of the PEM proton exchange membrane is compounded on the upper layer of the cathode PEN material roll after the bottom membrane of the lower layer of the PEM proton exchange membrane is discharged.
The roller knife process for MEA products according to claim 1, wherein in step e, the third roller knife group includes the eighth roller knife and the ninth roller knife, and the third independent guide roller group includes the anode PEN roll Feeding roller, the anode PEN material is rolled into the material roller to drive the anode PEN material roll to pass through the eighth roller knife and the ninth roller knife from back to front, and then compound with the upper surface of the upper CL layer of the PEM proton exchange membrane, of which the eighth roller The knives are used for punching, and the ninth roller knives are used for waste discharge operations.
A kind of MEA product roller cutter process as claimed in claim 2, is characterized in that: in step g, the 4th independent guide roller group comprises first upper layer roller group, the second upper layer roller group, and described fourth roller cutter group comprises The eleventh roller knife, the twelfth roller knife, and the thirteenth roller knife, the second upper roller group is located at the top of the first upper roller group, and the first upper roller group is located at the corresponding position of the roller group on the production line In the upper part, the first upper layer roller group includes the second PSA rubber strip feeding roller, which drives the second PSA rubber strip to feed from the back to the front, and the anode glue is punched out by the eleventh roller knife The side strips on both sides of the frame, the second upper roller group is located in the middle of the opposite front of the second PSA rubber strip conveying, and the second upper roller group passes through the twelfth roller knife for jump cutting and conveying the second double-sided adhesive strip , so that the second double-sided adhesive strip covers the two ends of the second PSA side strip at intervals, and the thirteenth roller knife located at the opposite front of the first upper roller set punches the double-sided adhesive strips at both ends into corresponding shapes, The PSA edge strips on both sides and the double-sided adhesive strips on both ends are combined to form an anode plastic frame, and finally the anode plastic frame is transported to the production line, and the anode plastic frame is composited on the upper surface of the anode PEN frame.
A kind of MEA product roller knife process as claimed in claim 8, it is characterized in that: in step a and step g, carry out the processing of side strips by two rolls of strip-shaped PSA adhesive strips, so that raw materials are saved, and step a and step The double-sided adhesive tape in g is compounded at both ends of the length of the PSA edge strip by jump cutting, which further saves raw materials.
A kind of MEA product roller knife process as claimed in claim 6, it is characterized in that: in step d, the film surface of PEM proton exchange membrane is provided with printing material, after printing material is passed through corresponding gap by heating device, makes PEM Both sides of the proton exchange membrane are provided with printing layers, which saves external production processes.