Membrane electrode catalyst coating device

Abstract

The utility model discloses a membrane electrode catalyst coating device which comprises a side plate, a first guide roller, a second guide roller, a third guide roller and a fourth guide roller, an unwinding drum and a winding drum; two ends of the proton exchange membrane are respectively wound on the unwinding drum and the winding drum; the first spraying mechanism is used for spraying a catalyst on one surface of the proton exchange membrane; the second spraying mechanism is used for spraying a catalyst on the other side of the proton exchange membrane; the first heating plate is used for heating and drying one side of the proton exchange membrane; and the second heating plate is used for heating and drying the other side of the proton exchange membrane. The first spraying mechanism and the second spraying mechanism are used for continuously spraying a catalyst on the double surfaces of the proton exchange membrane; the first heating plate and the second heating plate can sequentially dry and cure the catalyst coatings on the two faces of the proton exchange membrane, the curing effect consistency of the coatings is good, and deformation of the catalyst coatings on the proton exchange membrane due to rolling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell processing, in particular to a membrane electrode catalyst coating device. Background Art

[0002] A fuel cell is an energy conversion device that converts chemical energy in fuel into electrical energy. In the entire fuel cell system, the membrane electrode is the core component and the place where electrochemical reactions occur. Its performance directly determines the performance of the fuel cell.

[0003] From the anode side to the cathode side, the specific structure of the membrane electrode is arranged as a gas diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer and a gas diffusion layer. The three-in-one structure consisting of a proton exchange membrane and a catalyst layer is called a catalyst coated membrane. The traditional catalyst coated membrane preparation processes mainly include spraying, deposition and hot pressing transfer, among which the spraying process has the characteristics of fast coating speed, good coating uniformity and continuous production. It is a preparation process that is widely used in the industrial preparation of catalyst coated membranes.

[0004] In the prior art, the utility model patent with patent number CN211637077U discloses a catalyst spraying device for membrane electrode, including a frame, a transmission mechanism and a spraying mechanism, the transmission mechanism includes a winding roller and a reeling roller, the winding roller and the reeling roller are both mounted on the frame and arranged parallel to each other, the spraying mechanism is mounted on the frame, and the spraying mechanism is located between the winding roller and the reeling roller, the catalyst spraying device also includes a heating mechanism, the heating mechanism includes a heating plate, the heating plate is mounted on the frame, one side of the heating plate away from the frame is inclined toward the reeling roller, and the heating plate is located between the reeling roller and the spraying mechanism. In the above patent, the spraying mechanism can only spray one side of the proton exchange membrane, and cannot simultaneously complete the synchronous spraying of the anode catalyst layer and the cathode catalyst layer, which affects the processing efficiency. Utility Model Content

[0005] The utility model aims to provide a membrane electrode catalyst coating device to solve the problem that the existing spraying device can only spray one side of the proton exchange membrane and cannot simultaneously complete the synchronous spraying of the anode catalyst layer and the cathode catalyst layer, thus affecting the processing efficiency.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A membrane electrode catalyst coating device, comprising:

[0008] A side plate, on which a first guide roller, a second guide roller, a third guide roller and a fourth guide roller are rotatably arranged respectively;

[0009] A reel unwinding drum, which is rotatably mounted on the side plate;

[0010] A winding drum, which is rotatably mounted on the side plate;

[0011] A proton exchange membrane, one end of which is wound on a reel, and the other end of which is wound around a first guide roller, a second guide roller, a third guide roller and a fourth guide roller in sequence and wound on a reel;

[0012] A first spraying mechanism, which is disposed on the side plate and is used to spray the catalyst on one side of the proton exchange membrane;

[0013] A second spraying mechanism, which is disposed on the side plate and is used to spray the catalyst on the other side of the proton exchange membrane;

[0014] a first heating plate, which is disposed on the side plate and is used to heat and dry one side of the proton exchange membrane; and

[0015] The second heating plate is arranged on the side plate and is used for heating and drying the other side of the proton exchange membrane.

[0016] As a further solution of the utility model: a winding motor for driving the winding drum is installed on the back side of the side plate.

[0017] As a further solution of the utility model: the first guide roller and the second guide roller are located at the same height, and the first spraying mechanism is arranged at an upper position between the first guide roller and the second guide roller.

[0018] As a further solution of the utility model: the third guide roller and the fourth guide roller are located at the same height, and the second spraying mechanism is arranged at an upper position between the third guide roller and the fourth guide roller.

[0019] As a further solution of the utility model: the first heating plate is arranged between the first spraying mechanism and the second guide roller; the second heating plate is arranged between the second spraying mechanism and the fourth guide roller.

[0020] As a further solution of the utility model: the first spraying mechanism and the second spraying mechanism have the same structure, both comprising a material storage box and a spray head, the material storage box is mounted on the side plate through a connecting block, and a spray head is arranged at the bottom of the material storage box.

[0021] As a further solution of the utility model: it also includes a lifting mechanism, and the lifting mechanism includes:

[0022] A first mounting seat, which is fixed to the side plate;

[0023] A second mounting base, which is fixed to the side plate;

[0024] A guide rod, both ends of which are fixedly connected to the first mounting seat and the second mounting seat respectively;

[0025] A screw rod, two ends of which are rotatably connected to the first mounting seat and the second mounting seat respectively;

[0026] A driving motor, which is mounted on the second mounting seat and is used to drive the screw to rotate;

[0027] Among them, the first heating plate and the second heating plate are both fixed with a lifting plate, the lifting plate is slidably sleeved on the guide rod, and the lifting plate is threadedly connected to the lead screw.

[0028] Beneficial effects of the utility model:

[0029] A first spraying mechanism and a second spraying mechanism are provided, so that the catalyst can be continuously sprayed on both sides of the proton exchange membrane at the same time; a first heating plate and a second heating plate are provided, so that the catalyst coatings on both sides of the proton exchange membrane can be dried and cured in turn, and the curing effect of the double-sided coating is consistent, avoiding deformation of the catalyst coating on the proton exchange membrane due to winding; a lifting mechanism is provided to adjust the height of the first heating plate and the second heating plate, so as to flexibly adjust the distance between the first heating plate and the second heating plate and the proton exchange membrane to meet the drying and curing requirements under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] Figure 1 The stereoscopic view of the utility model Figure 1 ;

[0032] Figure 2 The stereoscopic view of the utility model Figure 2 ;

[0033] Figure 3 It is a structural schematic diagram of the first spraying mechanism in the utility model;

[0034] Figure 4 It is a structural schematic diagram of the lifting mechanism in the utility model.

[0035] In the figure: 1. bottom plate; 2. side plate; 3. unwinding drum; 4. winding drum; 5. first guide roller; 6. second guide roller; 7. third guide roller; 8. fourth guide roller; 9. proton exchange membrane; 10. first spraying mechanism; 11. second spraying mechanism; 101. material storage box; 102. nozzle; 103. connecting block; 12. first heating plate; 13. second heating plate; 14. first mounting seat; 15. second mounting seat; 16. guide rod; 17. screw rod; 18. driving motor; 19. lifting plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] See also Figure 1 and Figure 2 As shown, the utility model discloses a membrane electrode catalyst coating device, which may include a bottom plate 1, a side plate 2, a reel 3 and a reel 4, wherein the side plate 2 is vertically fixed on the bottom plate 1, the reel 3 and the reel 4 are both rotatably mounted on the side plate 2, and a reel motor (not shown in the figure) for driving the reel 4 is mounted on the back side of the side plate 2, wherein the reel 3 is used to reel in a proton exchange membrane 9 that is not coated with a catalyst, and the reel 4 is used to reel in a proton exchange membrane 9 that is coated with a catalyst; the side plate 2 is also rotatably provided with a first guide roller 5, a second guide roller 6, a third guide roller 7 and a fourth guide roller 8, wherein the proton exchange membrane 9 has one end wound on the unwinding drum 3, and the other end is wound around the first guide roller 5, the second guide roller 6, the third guide roller 7 and the fourth guide roller 8 in sequence and wound on the winding drum 4; it also includes a first spraying mechanism 10, a second spraying mechanism 11, a first heating plate 12 and a second heating plate 13, wherein the first spraying mechanism 10 is used to spray the catalyst on one side of the proton exchange membrane 9, the second spraying mechanism 11 is used to spray the catalyst on the other side of the proton exchange membrane 9, the first heating plate 12 is used to heat and dry one side of the proton exchange membrane 9, and the second heating plate 13 is used to heat and dry the other side of the proton exchange membrane 9.

[0038] Specifically, the winding motor drives the winding drum 4 to rotate at a constant speed, so that the proton exchange membrane 9 on the unwinding drum 3 is pulled out at a constant speed. When the proton exchange membrane 9 passes through the first spraying mechanism 10 and the second spraying mechanism 11, the first spraying mechanism 10 and the second spraying mechanism 11 spray the catalyst on both sides of the proton exchange membrane 9 respectively. In addition, the first heating plate 12 and the second heating plate 13 are used to heat and dry both sides of the proton exchange membrane 9 respectively, so that the catalyst on both sides of the proton exchange membrane 9 is quickly solidified.

[0039] In one embodiment, the first guide roller 5 and the second guide roller 6 are located at the same height, and the first spraying mechanism 10 is disposed above the first guide roller 5 and the second guide roller 6. The proton exchange membrane 9 is horizontally stretched by the first guide roller 5 and the second guide roller 6, and the catalyst is sprayed on the upward side of the proton exchange membrane 9 by the first spraying mechanism 10.

[0040] Similarly, the third guide roller 7 and the fourth guide roller 8 are located at the same height, and the second spraying mechanism 11 is arranged above the third guide roller 7 and the fourth guide roller 8, and the proton exchange membrane 9 is horizontally stretched and straightened by the third guide roller 7 and the fourth guide roller 8, and the catalyst is sprayed on the other side of the proton exchange membrane 9 facing upward by the second spraying mechanism 11;

[0041] In addition, the first heating plate 12 is arranged between the first spraying mechanism 10 and the second guide roller 6, so as to dry and solidify the catalyst slurry sprayed on one side of the proton exchange membrane 9 by the first spraying mechanism 10; the second heating plate 13 is arranged between the second spraying mechanism 11 and the fourth guide roller 8, so as to dry and solidify the catalyst slurry sprayed on the other side of the proton exchange membrane 9 by the second spraying mechanism 11.

[0042] In yet another embodiment, see Figure 3 As shown, the first spray mechanism 10 and the second spray mechanism 11 have the same structure, both of which include a storage box 101 and a nozzle 102. The storage box 101 is installed on the side plate 2 through a connecting block 103, and a nozzle 102 is provided at the bottom of the storage box 101. The anode catalyst slurry and the cathode catalyst slurry are respectively injected into the two storage boxes 101 and sprayed out at high speed from the nozzle 102, so that the catalyst coating can be performed on both sides of the proton exchange membrane 9.

[0043] For further information, see Figure 4 As shown, it also includes a lifting mechanism for driving the first heating plate 12 and the second heating plate 13 to move up and down, so as to adjust the distance between the first heating plate 12 and the second heating plate 13 and the proton exchange membrane 9 to meet different drying requirements;

[0044] Specifically, the lifting mechanism includes a first mounting seat 14, a second mounting seat 15, a guide rod 16, a screw rod 17 and a driving motor 18, wherein the first mounting seat 14 and the second mounting seat 15 are both fixed on the side plate 2, the two ends of the guide rod 16 are respectively fixedly connected to the first mounting seat 14 and the second mounting seat 15, the two ends of the screw rod 17 are respectively rotatably connected to the first mounting seat 14 and the second mounting seat 15, and the driving motor 18 is installed on the second mounting seat 15 for driving the screw rod 17 to rotate; the first heating plate 12 and the second heating plate 13 are both fixed with a lifting plate 19, the lifting plate 19 is slidably sleeved on the guide rod 16, and the lifting plate 19 is threadedly connected to the screw rod 17; the screw rod 17 is driven to rotate by the driving motor 18, thereby driving the two groups of lifting plates 19 to rise and fall synchronously, thereby realizing the distance adjustment between the first heating plate 12 and the second heating plate 13 and the proton exchange membrane 9.

[0045] The utility model discloses a membrane electrode catalyst coating device, which is provided with a first spraying mechanism 10 and a second spraying mechanism 11, so that the catalyst can be continuously sprayed on both sides of the proton exchange membrane 9; a first heating plate 12 and a second heating plate 13 are provided, and the catalyst coatings on both sides of the proton exchange membrane 9 can be dried and cured in turn, and the curing effect of the double-sided coating is consistent, thereby avoiding deformation of the catalyst coating on the proton exchange membrane 9 due to winding; a lifting mechanism is provided to adjust the height of the first heating plate 12 and the second heating plate 13, so as to flexibly adjust the distance between the first heating plate 12 and the second heating plate 13 and the proton exchange membrane 9 to meet the drying and curing requirements under different conditions.

[0046] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A membrane electrode catalyst coating device, characterized in that: include: A side plate (2) on which a first guide roller (5), a second guide roller (6), a third guide roller (7) and a fourth guide roller (8) are rotatably arranged respectively; A reel (3) is rotatably mounted on the side plate (2); A winding drum (4) is rotatably mounted on the side plate (2); A proton exchange membrane (9), one end of which is wound on a reel (3), and the other end of which is wound around a first guide roller (5), a second guide roller (6), a third guide roller (7) and a fourth guide roller (8) in sequence and is wound on a reel (4); A first spraying mechanism (10), which is arranged on the side plate (2) and is used to spray a catalyst on one side of the proton exchange membrane (9); A second spraying mechanism (11), which is arranged on the side plate (2) and is used to spray the catalyst on the other side of the proton exchange membrane (9); A first heating plate (12), which is arranged on the side plate (2) and is used to heat and dry one side of the proton exchange membrane (9); as well as The second heating plate (13) is arranged on the side plate (2) and is used to heat and dry the other side of the proton exchange membrane (9).

2. A membrane electrode catalyst coating device according to claim 1, characterized in that: A winding motor for driving the winding drum (4) is installed on the back side of the side plate (2).

3. A membrane electrode catalyst coating device according to claim 1, characterized in that: The first guide roller (5) and the second guide roller (6) are located at the same height, and the first spraying mechanism (10) is arranged at an upper position between the first guide roller (5) and the second guide roller (6).

4. A membrane electrode catalyst coating device according to claim 3, characterized in that: The third guide roller (7) and the fourth guide roller (8) are located at the same height, and the second spraying mechanism (11) is arranged at an upper position between the third guide roller (7) and the fourth guide roller (8).

5. A membrane electrode catalyst coating device according to claim 4, characterized in that: The first heating plate (12) is arranged between the first spraying mechanism (10) and the second guide roller (6); and the second heating plate (13) is arranged between the second spraying mechanism (11) and the fourth guide roller (8).

6. A membrane electrode catalyst coating device according to claim 1, characterized in that: The first spraying mechanism (10) and the second spraying mechanism (11) have the same structure, and both comprise a material storage box (101) and a spray head (102); the material storage box (101) is mounted on the side plate (2) via a connecting block (103); and a spray head (102) is provided at the bottom of the material storage box (101).

7. A membrane electrode catalyst coating device according to claim 5, characterized in that: It also includes a lifting mechanism, the lifting mechanism comprising: A first mounting seat (14) fixed on the side plate (2); A second mounting seat (15) fixed on the side plate (2); A guide rod (16), two ends of which are respectively fixedly connected to the first mounting seat (14) and the second mounting seat (15); A screw rod (17), two ends of which are rotatably connected to the first mounting seat (14) and the second mounting seat (15) respectively; A driving motor (18), which is mounted on the second mounting seat (15) and is used to drive the screw rod (17) to rotate; Wherein, a lifting plate (19) is fixed on both the first heating plate (12) and the second heating plate (13); the lifting plate (19) is slidably sleeved on the guide rod (16); and the lifting plate (19) is threadedly connected to the screw rod (17).

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