A perovskite film curing and drying device

Abstract

This invention provides a perovskite thin film curing and drying device, relating to the field of perovskite thin film curing technology. The device includes: a housing, with a preheating chamber, a hot pressing chamber, and a spreading chamber inside; a preheating box inside the preheating chamber; and hot pressing rollers inside the hot pressing chamber. A hot air assembly is positioned between the housing and the preheating box for preliminary preheating of the film; a hot pressing assembly is positioned between the housing and the hot pressing rollers for curing and drying the film; and a spreading assembly is positioned inside the housing for spreading the perovskite solution on a substrate. This device, through the hot air assembly, can preheat the perovskite solution, preventing uneven drying and curing, and recovering the hot air used for preheating. The hot pressing assembly enables hot pressing curing of the perovskite solution, and the spreading assembly provides spreading treatment of the perovskite solution before hot pressing curing.

Description

Technical Field

[0001] This invention relates to the field of perovskite film curing technology, specifically to a perovskite film curing and drying apparatus. Background Technology

[0002] Perovskite thin films are a special material with a lattice structure similar to silicon crystals. Perovskite thin films have high photoelectric conversion efficiency, reaching over 20%, which is much higher than that of traditional silicon solar cells. Secondly, the preparation cost of perovskite thin films is relatively low. Compared with silicon solar cells, they do not require expensive materials and preparation equipment, and can be mass-produced. In addition, perovskite thin films also have excellent optical properties and can work even under low light conditions. Therefore, they are commonly used in the fields of solar cells and photoelectric sensors.

[0003] Perovskite films require drying during production. Existing drying devices mostly perform simple drying, resulting in significant heat waste, energy loss, and increased costs. A prior art invention discloses a perovskite film curing and drying device that utilizes residual heat through a waste heat recovery component, effectively reducing energy consumption and drying costs. However, certain problems remain in practical application. Because the substrate carrying the perovskite solution directly enters the drying chamber, the drying speed on the surface of the perovskite solution is much faster than that on the ground, leading to uneven drying of the perovskite solution. Furthermore, before drying, it is necessary to ensure the perovskite solution is evenly applied to the substrate to avoid a rough surface on the cured perovskite film. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art by providing a perovskite film curing and drying device, which solves the problems of uneven drying of perovskite solution and uneven film surface after drying in the prior art.

[0005] Specifically, the hot air assembly can preheat the perovskite solution to prevent uneven drying and curing, and the hot air during preheating can be recycled. The hot pressing assembly can perform hot pressing curing on the perovskite solution, and the spreading assembly can spread the perovskite solution evenly before hot pressing curing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a perovskite film curing and drying apparatus, comprising:

[0007] The housing has a preheating chamber, a hot pressing chamber, and a spreading chamber inside. The preheating chamber contains a preheating box, and the hot pressing chamber contains hot pressing rollers.

[0008] A hot air assembly disposed between the housing and the preheating chamber is used for preliminary preheating of the film; and

[0009] The hot pressing assembly, located between the housing and the hot pressing rollers, is used to cure and dry the film.

[0010] A spreading component installed inside the housing is used to spread the perovskite solution on the base.

[0011] Furthermore, the hot air assembly includes:

[0012] A negative pressure chamber and a heating chamber are formed inside the box body;

[0013] A feeding conveyor belt is located inside the preheating chamber, and a heating block with a hollow internal structure is provided inside the preheating chamber, with the heating block passing through the middle of the feeding conveyor belt;

[0014] A blower is installed in the negative pressure chamber, and an air guide tube is provided between the negative pressure chamber and the heating chamber;

[0015] A first heater is installed inside the housing, and a heating plate connected to the first heater is installed inside the heating chamber;

[0016] Multiple air guide plates are installed inside the preheating box, and the air guide plates are evenly distributed and inclined towards the smearing cavity.

[0017] Furthermore, a collection box is provided inside the negative pressure chamber, and a filter screen is installed inside the negative pressure chamber. The filter screen is located between the collection box and the blower, and the upper half of the filter screen is inclined upward towards the collection box. An air inlet pipe communicating with the negative pressure chamber is provided on one side of the box.

[0018] Furthermore, the top of the heating chamber is connected to an air outlet pipe, the top of the air outlet pipe is connected to a diversion pipe, and multiple C-shaped vent pipes are connected between the diversion pipe and the heating block. The vent pipes are in communication with the interior of the heating block. Multiple C-shaped exhaust pipes are connected to the side of the heating block away from the vent pipes, and one end of the multiple exhaust pipes is connected to the same return pipe. One end of the return pipe is in communication with the negative pressure chamber.

[0019] Furthermore, the heating block is connected to multiple interconnecting pipes on the side near the exhaust pipe, and the interconnecting pipes are located between two exhaust pipes. The interconnecting pipes are arranged in a C-shape, and the end of the interconnecting pipe away from the heating block is connected to the interior of the preheating box.

[0020] Furthermore, the hot-pressing assembly includes:

[0021] An adjustment groove is provided inside the box body, and a limit groove is provided on the inner wall of the adjustment groove on both sides;

[0022] A threaded sleeve located inside the adjusting groove;

[0023] A threaded rod is connected to the inside of the adjusting groove via a bearing, and the bottom end of the threaded rod extends into the inside of the threaded sleeve and engages with its threads.

[0024] A movable plate is connected to the bottom of the threaded sleeve. Two mirror-shaped fixed blocks are connected to the bottom of the movable plate, and the two fixed blocks are connected to the hot-pressing roller via a bearing.

[0025] A rotary motor is installed inside the housing, a support wheel is installed inside the hot pressing chamber, and a discharge conveyor belt is provided inside the hot pressing chamber.

[0026] Furthermore, a gear is provided on the outer side of the threaded rod, and a drive wheel is driven and connected to the top of the rotary motor. The drive wheel is meshed with the gear. Limiting blocks are connected to both sides of the threaded sleeve, and one end of the limiting block extends into the limiting groove. The cross-sectional profile of the limiting block matches the cross-sectional size of the limiting groove.

[0027] Furthermore, a drive motor is installed on one of the fixing blocks on the side away from the hot press roller, and the drive shaft of the drive motor is connected to the hot press roller. A second heater is installed on the other fixing block on the side away from the hot press roller, and an electric heating coil connected to the second heater is provided inside the hot press roller.

[0028] Furthermore, the spreading component includes:

[0029] A slot is formed inside the housing and communicates with the hot pressing chamber;

[0030] A pressing plate is disposed inside the slot, and one end of the pressing plate extends into the hot pressing cavity and is located directly below the moving plate;

[0031] Two pressing rods are connected to the bottom of the pressing plate, and the bottom ends of the two pressing rods extend into the spreading cavity. A spreading roller is connected between the two pressing rods through a bearing. A return spring is sleeved on the outside of the pressing rod.

[0032] Furthermore, a negative pressure pipe is provided between the spreading chamber and the negative pressure chamber, and the negative pressure pipe is located above the collection box.

[0033] This invention provides a perovskite film curing and drying apparatus, which has the following beneficial effects:

[0034] The advantage of this invention is that, by setting up the hot air component, the surface and bottom of the perovskite solution can be preheated, ensuring the overall temperature of the perovskite solution is raised, preventing uneven drying and curing, and the hot air during preheating can be recycled.

[0035] Secondly, by setting up hot-pressing rollers in the hot-pressing assembly, the perovskite solution on the base can be hot-pressed and cured, so that the perovskite solution forms a thin film after being heated, thereby completing the curing and drying process of the perovskite film.

[0036] Next, by setting up the smoothing component, the preheated perovskite solution can be smoothed before hot pressing and curing, so that the perovskite solution is evenly distributed on the substrate, which facilitates the subsequent hot pressing and curing process by the hot pressing rollers, while ensuring the quality of the perovskite film after hot pressing and curing. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle.

[0039] Figure 3 This is a cross-sectional view of the overall structure of the present invention.

[0040] Figure 4 This is a schematic diagram of the hot-pressing roller structure of the present invention.

[0041] Figure 5 This is a schematic diagram of the air guide plate structure of the present invention.

[0042] Figure 6 This is a schematic diagram of the air guide plate structure of the present invention from another angle.

[0043] Figure 7 This is a schematic diagram of the gear structure of the present invention.

[0044] Figure 8 This is a schematic diagram of the movable plate structure of the present invention.

[0045] Figure 9 This is a schematic diagram of the heating block structure of the present invention.

[0046] Figure 10 This is a schematic diagram of the connecting pipe structure of the present invention.

[0047] Figure 11 For the present invention Figure 3 Enlarged view of point A in the image.

[0048] Figure 12 For the present invention Figure 3 Enlarged view of point B in the image.

[0049] Figure 13 For the present invention Figure 3 Enlarged view of point C in the image.

[0050] Figure 1-13 In the middle section: 1. Box body; 101. Feed conveyor belt; 102. Discharge conveyor belt; 103. Preheating chamber; 104. Hot pressing chamber; 1041. Support wheel; 105. Spreading chamber; 1051. Negative pressure pipe; 2. Negative pressure chamber; 201. Air inlet pipe; 202. Collection box; 203. Filter screen; 204. Blower; 205. Air guide pipe; 3. Heating chamber; 301. First heater; 302. Heating plate; 303. Air outlet pipe; 304. Diverter pipe; 305. Vent pipe; 306. Heating block; 307. Exhaust pipe; 30 8. Return pipe; 4. Preheating box; 401. Air guide plate; 402. Connecting pipe; 5. Adjusting groove; 501. Limiting groove; 502. Threaded rod; 5021. Gear; 503. Threaded sleeve; 504. Limiting block; 505. Rotary motor; 506. Drive wheel; 6. Moving plate; 601. Fixed block; 602. Hot press roller; 603. Drive motor; 604. Second heater; 605. Heating coil; 7. Slotting; 701. Pressing plate; 702. Pressing rod; 703. Return spring; 704. Spreading roller. Detailed Implementation

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0052] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0053] This application provides a perovskite film curing and drying apparatus. This apparatus, through the inclusion of a hot air assembly, can preheat the perovskite solution to prevent uneven drying and curing, and can also recycle the preheated hot air. Through the inclusion of a hot pressing assembly, the perovskite solution can be hot-pressed and cured. Through the inclusion of a smoothing assembly, the perovskite solution can be smoothed before hot-pressing and curing. The perovskite film curing and drying apparatus will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of embodiments.

[0054] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. Example 1

[0055] Please see Figure 1-13 This embodiment provides a perovskite film curing and drying device, comprising: a housing 1, wherein the housing 1 is provided with a preheating chamber 103, a hot pressing chamber 104 and a spreading chamber 105, the preheating chamber 103 is provided with a preheating box 4, and the hot pressing chamber 104 is provided with a hot pressing roller 602; a hot air assembly disposed between the housing 1 and the preheating box 4 for preliminary preheating of the film; a hot pressing assembly disposed between the housing 1 and the hot pressing roller 602 for curing and drying the film; and a spreading assembly disposed inside the housing 1 for spreading the perovskite solution on the substrate.

[0056] The hot air assembly allows for preliminary preheating of the perovskite solution surface and bottom, ensuring an overall increase in the perovskite solution temperature, preventing uneven drying and curing, and recycling the hot air used during preheating.

[0057] Secondly, by setting the hot pressing roller 602 in the hot pressing assembly, the perovskite solution on the base can be hot-pressed and cured, so that the perovskite solution forms a thin film after being heated, thereby completing the curing and drying process of the perovskite film.

[0058] Next, by setting up the smoothing component, the preheated perovskite solution can be smoothed before hot pressing and curing, so that the perovskite solution is evenly distributed on the substrate, which facilitates the subsequent hot pressing and curing process by the hot pressing roller 602, while ensuring the quality of the perovskite film after hot pressing and curing. Example 2

[0059] See Figures 3-6As shown, based on Embodiment 1, the hot air assembly includes: a negative pressure chamber 2 and a heating chamber 3 located inside the housing 1; a feeding conveyor belt 101 located inside the preheating chamber 103, wherein a heating block 306 with a hollow internal structure is provided inside the preheating chamber 103, and the heating block 306 passes through the middle of the feeding conveyor belt 101; a blower 204 installed inside the negative pressure chamber 2, wherein an air guide pipe 205 is provided between the negative pressure chamber 2 and the heating chamber 3; a first heater 301 installed inside the housing 1, wherein a heating plate 302 connected to the first heater 301 is installed inside the heating chamber 3; and multiple air guide plates 401 installed inside the preheating box 4, wherein the air guide plates 401 are evenly distributed and inclined toward the smoothing chamber 105.

[0060] In the production of perovskite thin films, a perovskite solution is uniformly coated onto a substrate and then dried to ensure surface dryness for subsequent processing. However, during the drying process, the perovskite solution is suddenly exposed to high temperatures, causing the solution surface to dry rapidly while the solution near the substrate dries more slowly. This results in different drying efficiencies between the perovskite solution surface and the substrate, thus affecting the quality of the perovskite thin film. To address this, the heating block 306 and preheating box 4 can be used to preheat the perovskite solution before hot-pressing and drying, reducing the temperature difference during the drying process and ensuring the quality of the perovskite curing and drying.

[0061] Reference Figure 2 and Figure 12 As shown, the negative pressure chamber 2 is equipped with a collection box 202 and a filter screen 203. The filter screen 203 is located between the collection box 202 and the blower 204, and the upper half of the filter screen 203 is inclined upward towards the collection box 202. The side of the box 1 is equipped with an air inlet pipe 201 that communicates with the negative pressure chamber 2.

[0062] During preheating, the gas in the negative pressure chamber 2 can be blown into the heating chamber 3 through the air guide pipe 205 by the blower 204, and the outside gas can be drawn into the negative pressure chamber 2 through the air inlet pipe 201. Then, the heating plate 302 is heated by the first heater 301, thereby raising the gas temperature inside the heating chamber 3. After the gas is heated by the heating plate 302, it enters the air outlet pipe 303 and is injected into the heating block 306 through the air outlet pipe 303, the diversion pipe 304 and the air vent pipe 305, so that the overall temperature of the heating block 306 itself rises. Since the heating block 306 is located in the middle of the feeding conveyor belt 101 and the belt on the feeding conveyor belt 101 is in contact with the surface of the heating block 306, the heat emitted by the heating block 306 can be transferred to the feeding conveyor belt 101, thereby initially heating the base and the perovskite solution on the base, achieving the effect of preheating.

[0063] Reference Figure 10As shown, the heating block 306 is connected to multiple interconnecting pipes 402 on the side near the exhaust pipe 307, and the interconnecting pipes 402 are located between two exhaust pipes 307. The interconnecting pipes 402 are arranged in a C-shape, and the end of the interconnecting pipes 402 away from the heating block 306 is connected to the interior of the preheating box 4.

[0064] Next, the hot air in the heating block 306 will be discharged into the preheating box 4 through the connecting pipe 402 and blown out from the bottom of the preheating box 4 to preheat the surface of the perovskite solution. The hot air blown out can be directed towards the smearing cavity 105 by the setting of multiple air guide plates 401.

[0065] Then, the hot air blown out of the preheating box 4 carries less heat after passing through the heating block 306, which prevents the hot air blown out of the preheating box 4 from being too hot and causing the perovskite solution on the base surface to dry and solidify directly. The temperature of the perovskite solution is increased while ensuring that it is not dried and solidified, so as to achieve the preheating effect. The heat emitted by the heating block 306 is conducted through the belt and the base, and the heat is not enough to dry and solidify the perovskite solution on the base surface, thus achieving the preheating effect.

[0066] Reference Figure 2 , Figure 9 and Figure 10 As shown, the top of the heating chamber 3 is connected to an exhaust pipe 303, the top of the exhaust pipe 303 is connected to a diversion pipe 304, and multiple C-shaped ventilation pipes 305 are connected between the diversion pipe 304 and the heating block 306. The ventilation pipes 305 are in communication with the interior of the heating block 306. Multiple C-shaped exhaust pipes 307 are connected to the side of the heating block 306 away from the ventilation pipes 305, and one end of the multiple exhaust pipes 307 is connected to the same return pipe 308. One end of the return pipe 308 is in communication with the negative pressure chamber 2.

[0067] Next, some of the hot air in the heating block 306 will enter the exhaust pipe 307 and be discharged into the negative pressure chamber 2 through the return pipe 308. This will heat up the air in the negative pressure chamber 2, thereby improving the recycling of heat and reducing heat loss. At the same time, after the air in the negative pressure chamber 2 is preheated by the hot air, it can heat up faster in the heating chamber 3, which improves the heating effect of the gas. Example 3

[0068] Reference Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, based on Embodiment 1, the hot pressing assembly includes: an adjustment groove 5 opened inside the housing 1, with limit grooves 501 opened on the inner walls of opposite sides of the adjustment groove 5; a threaded sleeve 503 disposed inside the adjustment groove 5; a threaded rod 502 connected to the adjustment groove 5 via bearings, with the bottom end of the threaded rod 502 extending into the threaded sleeve 503 and engaging with it threadedly; a movable plate 6 connected to the bottom of the threaded sleeve 503, with two mirror-arranged fixing blocks 601 connected to the bottom of the movable plate 6, and the two fixing blocks 601 connected to the hot pressing roller 602 via bearings; a rotary motor 505 installed inside the housing 1; a support wheel 1041 installed inside the hot pressing chamber 104; and a discharge conveyor belt 102 provided inside the hot pressing chamber 104.

[0069] Then, a drive motor 603 is installed on one of the fixing blocks 601 away from the hot press roller 602, and the drive shaft of the drive motor 603 is connected to the hot press roller 602. A second heater 604 is installed on the other fixing block 601 away from the hot press roller 602, and an electric heating coil 605 connected to the second heater 604 is provided inside the hot press roller 602.

[0070] The preheated base is conveyed to the hot press roller 602, located above the support wheel 1041. At this time, the drive wheel 506 is driven to rotate by the rotary motor 505, which in turn drives the gear 5021 to rotate. Since the diameter of the drive wheel 506 is much smaller than that of the gear 5021, the gear 5021 drives the threaded rod 502 to rotate slowly. The threaded rod 502 engages with the threaded sleeve 503, which in turn drives the moving plate 6 to move downward, thereby moving the hot press roller 602 downward to hot press and solidify the preheated perovskite solution on the base. During the downward movement of the hot press roller 602, the second heater 604 and the electric heating coil 605 can raise the temperature of the hot press roller 602, thereby ensuring the drying and solidification effect of the hot press roller 602 on the perovskite solution. The perovskite film after hot pressing and solidification by the hot press roller 602 is sent out by the discharge conveyor belt 102.

[0071] Reference Figure 11 As shown, a gear 5021 is provided on the outer side of the threaded rod 502, and a drive wheel 506 is driven and connected to the top of the rotary motor 505. The drive wheel 506 is meshed with the gear 5021. Limiting blocks 504 are connected to both sides of the threaded sleeve 503, and one end of the limiting block 504 extends into the limiting groove 501. The cross-sectional profile of the limiting block 504 matches the cross-sectional size of the limiting groove 501.

[0072] During the movement of the threaded sleeve 503, the direction and distance of movement of the threaded sleeve 503 can be limited by the setting of the limiting block 504 and the limiting groove 501, so as to avoid the hot press roller 602 from rotating or moving too far, and to ensure the curing and drying effect of the perovskite solution. Example 4

[0073] Based on Embodiment 1, the smoothing assembly includes: a slot 7 opened inside the housing 1 and communicating with the hot pressing chamber 104; a pressing plate 701 disposed inside the slot 7, with one end of the pressing plate 701 extending into the hot pressing chamber 104 and located directly below the moving plate 6; two pressing rods 702 connected to the bottom of the pressing plate 701, with the bottom ends of the two pressing rods 702 extending into the smoothing chamber 105; a smoothing roller 704 connected between the two pressing rods 702 by bearing cooperation; a return spring 703 sleeved on the outside of the pressing rods 702; a negative pressure pipe 1051 provided between the smoothing chamber 105 and the negative pressure chamber 2, and the negative pressure pipe 1051 located above the collection box 202.

[0074] After the preheated base and perovskite solution enter the spreading cavity 105, the moving plate 6 moves down and contacts the pressing plate 701, and drives the pressing plate 701 to move down. The pressing plate 701 drives the spreading roller 704 to move down through the pressing rod 702 to spread the perovskite solution on the base, so as to ensure the subsequent hot pressing curing effect.

[0075] As the blower 204 blows the gas in the negative pressure chamber 2 into the heating chamber 3, a negative pressure is generated in the negative pressure chamber 2. At this time, through the setting of the negative pressure pipe 1051, most of the hot air blown from the preheating box 4 to the smearing chamber 105 can be drawn back into the negative pressure chamber 2. The hot air that re-enters the negative pressure chamber 2 mixes with the air entering the negative pressure chamber 2 through the air inlet pipe 201 and heats up. Through the setting of the filter screen 203, dust and impurities in the gas are removed.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The above provides a detailed description of a perovskite film curing and drying apparatus provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A perovskite film curing and drying apparatus, characterized in that, include: The box body (1) is provided with a preheating chamber (103), a hot pressing chamber (104) and a smoothing chamber (105) inside the box body (1). The preheating chamber (103) is provided with a preheating box (4), and the hot pressing chamber (104) is provided with a hot pressing roller (602). A hot air assembly is installed inside the housing (1); and Thermopressor assembly disposed inside the housing (1); The spreading component installed inside the box (1) is used to spread the perovskite solution on the base. The hot pressing assembly includes: an adjustment groove (5) inside the housing (1), with limit grooves (501) on the inner walls of opposite sides of the adjustment groove (5); a threaded sleeve (503) inside the adjustment groove (5); a threaded rod (502) connected to the adjustment groove (5) via bearings, with the bottom end of the threaded rod (502) extending into the threaded sleeve (503) and threadedly engaged therewith; a movable plate (6) connected to the bottom of the threaded sleeve (503), with two mirror-image fixed blocks (601) connected to the bottom of the movable plate (6), and the two fixed blocks (601) connected to the hot pressing roller (602) via bearings; a rotary motor (505) installed inside the housing (1), a support wheel (1041) installed inside the hot pressing chamber (104), and a discharge conveyor belt (102) provided inside the hot pressing chamber (104); the threaded rod (502) A gear (5021) is provided on the outside of the rotating motor (505), and a drive wheel (506) is driven and connected to the top of the rotating motor (505). The drive wheel (506) meshes with the gear (5021). Limiting blocks (504) are connected to both sides of the threaded sleeve (503), and one end of the limiting block (504) extends into the limiting groove (501). The cross-sectional profile of the limiting block (504) matches the cross-sectional size of the limiting groove (501). A drive motor (603) is installed on one side of the fixed block (601) away from the hot press roller (602), and the drive shaft of the drive motor (603) is connected to the hot press roller (602). A second heater (604) is installed on the other side of the fixed block (601) away from the hot press roller (602). An electric heating coil (605) connected to the second heater (604) is provided inside the hot press roller (602). The smoothing assembly includes: a slot (7) opened inside the housing (1) and communicating with the hot pressing chamber (104); a pressing plate (701) provided inside the slot (7), with one end of the pressing plate (701) extending into the hot pressing chamber (104) and located directly below the moving plate (6); two pressing rods (702) connected to the bottom of the pressing plate (701), with the bottom ends of the two pressing rods (702) extending into the smoothing chamber (105), and a smoothing roller (704) connected between the two pressing rods (702) by bearing cooperation, and a return spring (703) sleeved on the outside of the pressing rod (702).

2. The perovskite film curing and drying apparatus according to claim 1, characterized in that, The hot air assembly includes: The negative pressure chamber (2) and heating chamber (3) are located inside the box (1); A feeding conveyor belt (101) is provided inside the preheating chamber (103). The preheating chamber (103) is provided with a heating block (306) with a hollow internal structure, and the heating block (306) passes through the middle of the feeding conveyor belt (101). A blower (204) is installed in the negative pressure chamber (2), and an air guide pipe (205) is provided between the negative pressure chamber (2) and the heating chamber (3). The first heater (301) is installed inside the housing (1), and the heating chamber (3) is equipped with a heating plate (302) connected to the first heater (301). Multiple air guide plates (401) are installed inside the preheating box (4), and the air guide plates (401) are evenly distributed and inclined towards the smearing cavity (105).

3. The perovskite film curing and drying apparatus according to claim 2, characterized in that, The negative pressure chamber (2) is provided with a collection box (202) and a filter screen (203) is installed inside the negative pressure chamber (2). The filter screen (203) is located between the collection box (202) and the blower (204), and the upper half of the filter screen (203) is inclined upward towards the collection box (202). An air inlet pipe (201) communicating with the negative pressure chamber (2) is provided on one side of the box body (1).

4. The perovskite film curing and drying apparatus according to claim 2, characterized in that, The top of the heating chamber (3) is connected to an air outlet pipe (303), the top of the air outlet pipe (303) is connected to a diversion pipe (304), and the diversion pipe (304) and the heating block (306) are connected to multiple C-shaped ventilation pipes (305), and the ventilation pipes (305) are connected to the interior of the heating block (306). The side of the heating block (306) away from the ventilation pipes (305) is connected to multiple C-shaped exhaust pipes (307), and one end of the multiple exhaust pipes (307) is connected to the same return pipe (308), and one end of the return pipe (308) is connected to the negative pressure chamber (2).

5. The perovskite film curing and drying apparatus according to claim 4, characterized in that, The heating block (306) is connected to a plurality of interconnecting pipes (402) on the side near the exhaust pipe (307), and the connecting pipe (402) is located between two exhaust pipes (307). The connecting pipe (402) is arranged in a C-shape, and the end of the connecting pipe (402) away from the heating block (306) is connected to the interior of the preheating box (4).

6. The perovskite film curing and drying apparatus according to claim 3, characterized in that, A negative pressure pipe (1051) is provided between the smearing chamber (105) and the negative pressure chamber (2), and the negative pressure pipe (1051) is located above the collection box (202).

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