Perovskite cell combined type coating device and coating assembly thereof

Abstract

The invention discloses a perovskite battery combined type coating device and a coating assembly thereof in the technical field of perovskite battery processing, the perovskite battery combined type coating device comprises a mounting frame, a scraper blade and a second driving part used for driving the scraper blade to lift are arranged on the mounting frame, a support is arranged on the mounting frame, a plurality of nozzles are arranged on the support, and the nozzles are arranged on the mounting frame. A conveying pipe is arranged on the mounting frame; the coating assembly further comprises a material storage box, a guide pipe used for being communicated with the conveying pipe is arranged above the material storage box in a sliding mode, and the guide pipe is communicated with the material storage box. The guide pipe, the conveying pipe and the feeding pipe which are connected between the storage box and the spray head are all made of hard materials, good bending resistance and compression resistance are achieved, the stability of the cross section of an internal flow channel can be kept in the motion state, flow fluctuation and pressure pulsation caused by pipeline bending, stretching or twisting are avoided, and the service life of the spray head is prolonged. Therefore, the continuity and the uniformity of the solution in the conveying process are ensured, and the thickness consistency and the surface quality of the perovskite thin film are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of perovskite battery processing, and more specifically to a perovskite battery combined coating device and its coating components. Background Technology

[0002] In the fabrication of perovskite solar cells, the uniform and continuous coating of the light-absorbing layer (i.e., the perovskite layer) is one of the key processes that determines the performance and yield of the cells. Currently, widely used coating methods include slot coating and blade coating. In slot coating, the solution is transported from the liquid storage device to the coating nozzle through a delivery pipeline and forms a uniform thin film on the substrate.

[0003] However, in actual coating operations, in order to achieve flexible movement of the nozzle, the solution delivery pipe connecting the nozzle and the liquid supply system is usually made of flexible materials (such as Teflon tubing, silicone tubing, etc.). Although this flexible pipe ensures the freedom of movement of the nozzle, the pipe will bend, twist, or even stretch during the movement of the nozzle, causing fluctuations in the flow resistance of the solution in the pipe. This leads to unstable flow at the nozzle outlet, which directly affects the uniformity of solution spreading on the substrate during the coating process. It can easily cause problems such as uneven film thickness, edge burrs, and stripe defects, which seriously reduces the quality of the perovskite film and the consistency of the photoelectric performance of the battery. Summary of the Invention

[0004] The purpose of this invention is to provide a perovskite battery combined coating device and its coating components, which solves the problems of the flexible pipes in existing coating devices.

[0005] The present invention achieves the above objectives through the following technical solution: a perovskite battery combined coating assembly, comprising: a mounting frame, wherein a scraper and a second driving component for driving the scraper to rise and fall are provided on the mounting frame, a bracket is provided on the bracket, a plurality of nozzles are provided on the bracket, and a delivery pipe for communicating with the nozzles is provided on the mounting frame;

[0006] The coating assembly also includes a storage tank, and a conduit for communicating with a delivery pipe is slidably disposed above the storage tank. The conduit is connected to the storage tank.

[0007] Preferably, the storage box has a slot on its upper part, and the end of the conduit away from the delivery pipe has a movable slider. The movable slider extends through the slot into the storage box, and the movable slider has a through hole for communicating the inner cavity of the storage box with the conduit.

[0008] Preferably, both the delivery pipe and the conduit are rigid pipes.

[0009] Preferably, the mounting frame is equipped with a drive device for driving the support frame to rise and fall, and the conveying pipe is connected to the nozzle through a feeding pipe;

[0010] The feed pipe is a rigid pipe, and the feed pipe includes a fixed pipe and a movable pipe that slides inside the fixed pipe.

[0011] Preferably, both ends of the inner cavity of the conveying pipe are slidably provided with push plates and push rods for driving the push plates to move;

[0012] The conveying pipe is provided with a guide pipe, and the conveying pipe is provided with an inlet for communicating with one end of the guide pipe. The inlet is located between two push plates. The other end of the guide pipe is connected to the conduit through the conveying pipe. The conveying pipe is provided with a baffle to guide the solution in the conduit into the guide pipe.

[0013] Preferably, the storage box is provided with a mounting cover for covering the movable slider, the mounting cover is provided with a groove for the guide tube to pass through, the storage box is provided with a winding mechanism on both sides, the movable slider is provided with a flexible shielding member on both sides respectively connected to the two winding mechanisms, and the storage box is provided with a guide roller for supporting the flexible shielding member.

[0014] Preferably, a perovskite solar cell combined coating apparatus includes: a worktable and a processing platform and coating assembly disposed on the worktable, wherein the coating assembly utilizes the above-mentioned perovskite solar cell combined coating assembly, and the worktable is provided with a first driving member for driving the mounting frame to move.

[0015] Preferably, two fixed baffles are slidably provided on the processing platform;

[0016] The fixed baffle includes a support plate and a movable plate that is slidably mounted on the support plate.

[0017] The beneficial effects of this invention are as follows: a guide slot is provided on the storage tank, and a movable slider is slidably installed in the slot and connected to the nozzle mounting bracket through a conduit and a delivery pipe; when the first driving member drives the mounting bracket to move so that the nozzle performs precise coating above the substrate, the movable slider moves along the slot. During this process, the conduit, delivery pipe and feed pipe connecting the storage tank and the nozzle are all made of rigid materials, which have good bending and pressure resistance, and can maintain the stability of the internal flow channel cross section in motion, avoiding flow fluctuations and pressure pulsations caused by pipe bending, stretching or torsion, thereby ensuring the continuity and uniformity of the solution during the transportation process, and significantly improving the thickness consistency and surface quality of the perovskite film. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the coating device structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the workbench and the processing platform of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure between the mounting frame and the delivery pipe of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection structure between the storage box and the mounting cover of the present invention;

[0022] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B;

[0023] Figure 6 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 7 This is a schematic diagram of the connection structure between the conveying pipe and the guide pipe of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C;

[0026] Figure 9 For the present invention Figure 7 Enlarged schematic diagram of the structure at point D;

[0027] Figure 10 For the present invention Figure 7 Enlarged schematic diagram of the structure at point E in the middle.

[0028] In the diagram: 1. Workbench; 2. Processing platform; 3. Fixed baffle; 301. Support plate; 302. Movable plate; 4. Mounting frame; 5. Scraper; 6. First drive component; 7. Storage bin; 8. Conveying pipe; 9. Guide pipe; 10. Second drive component; 11. Bracket; 12. Nozzle; 13. Feeding pipe; 131. Fixed pipe; 132. Movable pipe; 14. Mounting cover; 15. Moving slider; 16. Flexible shielding component; 17. Winding mechanism; 18. Guide roller; 19. Push rod; 20. Push plate; 21. Guide pipe; 22. Partition. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Example 1

[0031] Please see Figure 3A perovskite battery composite coating assembly includes: a mounting frame 4, a second driving member 10 (such as an electric telescopic rod) on the mounting frame 4, a scraper 5 on the moving end of the second driving member 10, a bracket 11 on the mounting frame 4, a plurality of nozzles 12 on the bottom wall of the bracket 11, the plurality of nozzles 12 being arranged sequentially at intervals along the length extension direction of the bracket 11, and a conveying pipe 8 on the top wall of the mounting frame 4, the conveying pipe 8 being connected to the nozzles 12.

[0032] Please see Figure 1 and Figure 2 The coating assembly also includes a storage tank 7, which contains a coating solution. The storage tank 7 has an opening with a valve, through which the solution can be replenished or drained. The storage tank 7 has a rectangular cross-section and a slot at its top, extending along its length. A conduit 9 is connected to the bottom wall of the delivery pipe 8. A movable slider 15 is provided at the end of the conduit 9 away from the delivery pipe 8. The movable slider 15 slides into the slot, and its bottom end extends into the inner cavity of the storage tank 7. A through hole is provided on the movable slider 15, which connects the inner cavity of the storage tank 7 to the conduit 9.

[0033] It should be noted that a pump is installed on the movable slider 15 or the conduit 9 to extract the solution inside the storage tank 7 and deliver it to the nozzle 12 through the conduit 9 and the delivery pipe 8.

[0034] In this embodiment, as a further optimization, please refer to... Figure 3 Both the delivery pipe 8 and the conduit 9 are rigid pipes (such as PVC pipes) to prevent deformation. The mounting frame 4 is equipped with a drive device (such as an electric cylinder), one end of which is connected to the bracket 11 to drive the bracket 11 to rise and fall, thereby adjusting the height of the nozzle 12. The delivery pipe 8 and the nozzle 12 are connected through the feed pipe 13. The feed pipe 13 is a rigid pipe (such as PVC pipe), and the number of feed pipes 13 is the same as the number of nozzles 12, and they correspond one-to-one. Several feed pipes 13 are arranged at intervals along the length of the bracket 11. The feed pipe 13 includes a fixed pipe 131 and a movable pipe 132 that slides inside the fixed pipe 131 (a sealing ring is provided between the fixed pipe 131 and the movable pipe 132 to seal the two). The fixed pipe 131 is connected to the delivery pipe 8, and the movable pipe 132 is connected to the nozzle 12. The movable pipe 132 slides in the cavity of the fixed pipe 131, so that the up and down movement of the bracket 11 is not affected, which plays a compensating role.

[0035] It should be noted that the conveying pipe 8, the conduit 9, and the feed pipe 13 are all rigid pipes, which prevents them from deforming during the process of conveying the solution and ensures that the solution is conveyed evenly.

[0036] In this embodiment, as a further optimization, please refer to... Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The conveying pipe 8 is arranged along the direction of several feeding pipes 13. Push plates 20 are slidably provided at both ends of the inner cavity of the conveying pipe 8, and push rods 19 are provided at both ends of the conveying pipe 8. The ends of the push rods 19 extend into the inner cavity of the conveying pipe 8 and connect with the push plates 20, used to drive the push plates 20 to move within the inner cavity of the conveying pipe 8. A guide pipe 21 is provided on the conveying pipe 8, with an inlet opening through which one end of the conveying pipe 8 is connected to the guide pipe 21. The inlet is located between two push plates 20. The other end of the guide pipe 21 is connected to the conduit 9 through the conveying pipe 8. A partition 22 is provided within the inner cavity of the conveying pipe 8. The partition 22 is used for… The solution inside the delivery pipe 8 is blocked and guided into the feed pipe 21, allowing it to enter the delivery pipe 8 through the inlet (at this time, the solution is between the two push plates 20); by moving the push rod 19, the push plates 20 are moved inside the delivery pipe 8 to change the distance between the two push plates 20; when the push plates 20 move towards the middle area of ​​the delivery pipe 8, the communication area between the outer feed pipe 13 and the delivery pipe 8 is separated, preventing the solution from entering the outer feed pipe 13, thereby stopping the outer nozzle 12 from working, which is used to adjust the number of working nozzles 12 so that the coating assembly can adapt to different widths of basic coating.

[0037] It should be noted that bolts are screwed onto the outside of the delivery pipe 8 to fix the push rod 19.

[0038] In this embodiment, as a further optimization, please refer to... Figure 4 and Figure 5 The storage tank 7 has a mounting cover 14 on its top wall, which covers the movable slider 15. The mounting cover 14 has a groove for the guide tube 9 to pass through, and the groove is parallel to the opening. Both sides of the storage tank 7 are provided with a winding mechanism 17 (including a housing, a motor inside the housing, and a roller on the output shaft of the motor). Both sides of the movable slider 15 are provided with flexible shielding parts 16 (which can be made of flexible plastic). The two flexible shielding parts 16 are connected to the two rollers respectively. The storage tank 7 is provided with a guide roller 18, which supports the flexible shielding parts 16. The flexible shielding parts are used to shield the opening of the storage tank 7 to prevent external impurities from falling directly into the solution inside the storage tank 7. The left and right movement of the movable slider 15 is not affected by the winding or releasing of the flexible shielding parts 16 by the winding mechanism 17 on both sides.

[0039] Example 2

[0040] As a further optimization of Example 1, please refer to Figure 1 and Figure 2A perovskite battery combined coating device includes: a workbench 1, a processing platform 2 on the top wall of the workbench 1, a guide rail on the top wall of the workbench 1, the guide rail being parallel to the slot of the storage box 7, a coating component mounting bracket 4 slidably mounted on the guide rail, the coating component utilizing the above-mentioned coating component, and a first driving component 6 (including a motor, a lead screw mounted on the output shaft of the motor, and a slide mounted on the outer wall of the lead screw, the connection between the slide and the lead screw having a screw hole, and the slide being connected to the mounting bracket 4).

[0041] It should be noted that the substrate to be processed is placed on the top wall of the processing platform 2. The solution inside the storage tank 7 is pumped out and fed into the nozzle 12 through the conduit 9, the delivery pipe 8 and the supply pipe 13, and then sprayed onto the substrate. The first driving member 6 drives the mounting frame 4 to slide on the guide rail, so that the nozzle 12 moves to spray the solution onto the substrate. During this process, the delivery pipe 8 and the conduit 9 move together with the mounting frame 4. The conduit 9 slides in the slot with the moving slider 15 to ensure that the conduit 9 is always connected to the inner cavity of the storage tank 7, so that the solution is continuously delivered and the pipe for delivering the solution does not bend. While the mounting frame 4 moves, the second driving member 10 drives the scraper 5 to move down and approach the substrate to evenly scrape the solution onto the substrate.

[0042] In this embodiment, as a further optimization, please refer to... Figure 1 , Figure 2 and Figure 6 Two fixed baffles 3 are slidably provided on the processing platform 2. Bolts are screwed onto the fixed baffles 3 for fixing the fixed baffles 3. The substrate is fixed on the processing platform 2 by the two fixed baffles 3. The fixed baffles 3 include a support plate 301 and a movable plate 302 slidably provided on the support plate 301. The fixed baffles 3 are used to adjust the height of the fixed baffles 3 to adapt to the usage requirements of different substrates.

[0043] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A perovskite solar cell composite coated assembly, characterized in that, include: Mounting frame (4), the mounting frame (4) is provided with scraper (5) and second drive member (10) for driving scraper (5) to rise and fall, the mounting frame (4) is provided with bracket (11), the bracket (11) is provided with a plurality of nozzles (12), the mounting frame (4) is provided with delivery pipe (8) for communicating with nozzles (12); The coating assembly also includes a storage tank (7), above which a conduit (9) is slidably disposed for communicating with a delivery pipe (8), and the conduit (9) is connected to the storage tank (7).

2. The perovskite solar cell combined coating assembly according to claim 1, characterized in that, The storage box (7) has a slot on top, and the end of the conduit (9) away from the conveying pipe (8) is provided with a movable slider (15). The movable slider (15) extends through the slot into the storage box (7), and the movable slider (15) is provided with a through hole for communicating the inner cavity of the storage box (7) with the conduit (9).

3. The perovskite solar cell combined coating assembly according to claim 2, characterized in that, Both the delivery pipe (8) and the conduit (9) are rigid pipes.

4. The perovskite solar cell combined coating assembly according to claim 3, characterized in that, The mounting frame (4) is equipped with a drive device for driving the support (11) to rise and fall, and the conveying pipe (8) is connected to the nozzle (12) through the feeding pipe (13); The feeding pipe (13) is a rigid pipe, and the feeding pipe (13) includes a fixed pipe (131) and a movable pipe (132) that is slidably inserted into the fixed pipe (131).

5. A perovskite solar cell combined coating assembly according to claim 4, characterized in that, The inner ends of the conveying pipe (8) are slidably provided with push plates (20) and push rods (19) for driving the push plates (20) to move; The conveying pipe (8) is provided with a guide pipe (21), and the conveying pipe (8) is provided with an inlet for communicating with one end of the guide pipe (21). The inlet is located between two push plates (20). The other end of the guide pipe (21) is connected to the conduit (9) through the conveying pipe (8). The conveying pipe (8) is provided with a baffle (22) to guide the solution in the conduit (9) into the guide pipe (21).

6. A perovskite solar cell combined coating assembly according to claim 5, characterized in that, The storage box (7) is provided with a mounting cover (14) for covering the movable slider (15). The mounting cover (14) is provided with a groove for the guide tube (9) to pass through. The storage box (7) is provided with a winding mechanism (17) on both sides. The movable slider (15) is provided with a flexible shield (16) on both sides, which is connected to the two winding mechanisms (17) respectively. The storage box (7) is provided with a guide roller (18) for supporting the flexible shield (16).

7. A perovskite solar cell composite coating apparatus, comprising: The workbench (1) and the processing platform (2) and coating assembly disposed on the workbench (1) are characterized in that: the coating assembly utilizes a perovskite battery combined coating assembly as described in claim 6, and the workbench (1) is provided with a first driving member (6) for driving the mounting bracket (4) to move.

8. The perovskite solar cell combined coating apparatus according to claim 7, characterized in that, The processing platform (2) is provided with two fixed baffles (3) that slide on it; The fixed baffle (3) includes a support plate (301) and a movable plate (302) that is slidably disposed on the support plate (301).

Images