Air quenching device without return air and perovskite thin film production line

Abstract

The utility model relates to a return-air-free gas quenching device and a perovskite thin film production line, and the device comprises a frame body mechanism which comprises a first supporting body and a support movably connected to the first supporting body along a first direction; the driving mechanism comprises a second supporting body arranged on the support and a rotating part movably connected to the second supporting body in the second direction, and the plane where the first direction is located is perpendicular to the plane where the second direction is located; the air knife mechanism comprises an air knife rest connected to the output end of the rotating part, an air knife body arranged on the air knife rest, an air baffle movably arranged on the air knife rest in the second direction and an adjusting assembly arranged on the air knife rest and used for adjusting the air baffle to move in the second direction. Through the arrangement, the problems of non-uniform crystallization, cracks, bubbles and the like caused by return air in a flexible roll-to-roll perovskite solar cell functional layer coating process are solved, and uniform crystallization and a high-quality coating layer are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell production, in particular to a gas quenching device without return air and a perovskite film production line. Background Art

[0002] The flexible roll-to-roll perovskite thin film crystallization preparation process is an important process in the field of solar cells. In this process, coating the functional layer of the perovskite solar cell is a key step, and the gas quenching air knife, as a coating auxiliary tool, can remove excess liquid during the coating process. The gas quenching air knife blows the liquid on the coating layer to remove excess liquid, thereby achieving the preparation of thin film crystallization.

[0003] However, in the traditional air knife quenching process, due to the airflow generated by the air knife blowing the liquid during the coating process flowing in the opposite direction, backflow often occurs, causing the liquid in the coating layer to flow back, thereby causing pre-crystallization and causing uneven crystallization, cracks and bubbles. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problems of uneven crystallization, cracks and bubbles in the perovskite film crystallization preparation process in the prior art, thereby providing a return air-free gas quenching device and a perovskite film production line.

[0005] In order to solve the above technical problems, the utility model provides a gas quenching device without return air, comprising:

[0006] The frame mechanism comprises: a first support body, and a bracket movably connected to the first support body along a first direction;

[0007] The driving mechanism comprises: a second support body disposed on the bracket, and a rotating member movably connected to the second support body along a second direction, wherein the first direction and the second direction are perpendicular to the plane;

[0008] The wind knife mechanism comprises: a wind knife frame connected to the output end of the rotating member, a wind knife body arranged on the wind knife frame, a wind shield plate movably arranged on the wind knife frame along a second direction, and an adjustment component arranged on the wind knife frame and used to adjust the wind shield plate to move along the second direction, wherein the wind shield plate is arranged at the output end of the wind knife body.

[0009] In one embodiment of the utility model, the adjustment assembly includes: a bearing seat arranged on the wind blade frame, a movable plate connected to the end of the wind shield plate, a first screw rod threadedly fitted and passing through the movable plate and extending to the bearing seat, and the end of the first screw rod is fixedly connected to the inner ring of the bearing seat.

[0010] In one embodiment of the utility model, the end of the wind shield is arranged between the output end of the wind knife body and the perovskite film to be gas quenched, and the plane where the wind shield is located and the plane where the wind knife body output air curtain is located have an angle.

[0011] In one embodiment of the utility model, the wind shield is a flat plate, or a guide baffle is provided along its width direction.

[0012] In an embodiment of the utility model, the bracket is provided with a driving cylinder, and the output end of the driving cylinder is connected to the rotating member.

[0013] In one embodiment of the utility model, the rotating member is a rotating cylinder, and the wind blade holder is connected to a rotating disk of the rotating cylinder.

[0014] In one embodiment of the utility model, the rotating disk of the rotating cylinder is provided with scale lines, and the rotating cylinder is also provided with a locking assembly, which is used to lock or unlock the rotating angle of the rotating cylinder.

[0015] In one embodiment of the utility model, the locking assembly includes: a positioning seat arranged on the rotating cylinder body, a movable groove arranged on the positioning seat, a movable rod having one end fixedly connected to the movable groove and the other end extending to the movable groove, and a second screw and an elastic member respectively abutting against both sides of the movable rod.

[0016] In one embodiment of the utility model, the second screw thread is matched and penetrates the positioning seat and extends to the movable groove to abut the first side of the movable rod, the elastic member is fixed to the positioning seat and the elastic movable end is penetrated by the positioning seat and extends to the movable groove to abut the second side of the movable rod.

[0017] The utility model also provides a perovskite film production line, comprising the above-mentioned air quenching device without return air, wherein the air quenching device is arranged on the conveying line of the production line.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses a kind of air quenching device without return air. By means of the arranged rotating parts, the output air curtain of the air knife body can air quench the film at different angles. The position of the air outlet of the air quenching air knife is opposite to the movement direction of the coating liquid. The second support body is adjusted up and down to make the air knife body maintain a constant height relative to the film while air quenching at different angles. Alternatively, the height between the air knife body and the film can be adjusted separately, thereby realizing air quenching at multiple angles and heights. By means of the arranged wind shield plate, the entry of return air is blocked, thereby effectively sweeping the coating liquid and avoiding the generation of return air. Through the above-mentioned improvement measures, the problems of uneven crystallization, cracks and bubbles caused by return air in the coating process of the functional layer of flexible roll-to-roll perovskite solar cells are successfully solved, the coating quality can be effectively improved, the performance and stability of solar cells can be improved, and uniform crystallization and high-quality coating layers can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0021] Figure 1 It is a three-dimensional diagram of the gas quenching device of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the wind knife mechanism of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the rotating part and the locking assembly of the utility model.

[0024] Explanation of the reference numerals in the specification: 1. first support body; 2. bracket; 3. slider; 4. rotating member; 5. second support body; 6. driving cylinder; 7. wind knife body; 8. wind shield; 9. locking assembly; 91. positioning seat; 92. second screw; 93. movable rod; 94. elastic member; 95. movable groove; 10. turntable; 11. wind knife holder; 12. threaded sleeve; 13. first screw; 14. movable plate; 15. bearing seat. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Embodiment 1

[0027] Reference Figure 1-Figure 3 As shown, a gas quenching device without return air of the utility model comprises:

[0028] The frame mechanism comprises: a first support body 1, a bracket 2 movably connected to the first support body 1 along a first direction (in the embodiment, the length direction);

[0029] The driving mechanism comprises: a second support body 5 provided on the bracket 2, and a rotating member 4 movably connected to the second support body 5 along a second direction (in this embodiment, a height direction), wherein the first direction and the second direction are perpendicular to the planes where the first direction and the second direction are located;

[0030] The wind knife mechanism comprises: a wind knife frame 11 connected to the output end of the rotating member 4, a wind knife body 7 arranged on the wind knife frame 11, a wind shield plate 8 movably arranged on the wind knife frame 11 along the second direction, and an adjustment component arranged on the wind knife frame 11 and used to adjust the wind shield plate 8 to move along the second direction, wherein the wind shield plate 8 is arranged at the output end of the wind knife body 7.

[0031] The utility model discloses a return air-free gas quenching device. The frame mechanism enables the wind knife mechanism to move and adjust its position along the direction of the perovskite film production line to be gas quenched. The rotating member 4 is arranged so that the output air curtain of the wind knife body 7 can gas quench the film at different angles. The position of the gas outlet of the gas quenching wind knife is opposite to the movement direction of the coating liquid. The second support body 5 is adjusted up and down so that the wind knife body 7 can maintain a constant height relative to the film while gas quenching at different angles, or the height between the wind knife body 7 and the film can be adjusted separately, thereby realizing gas quenching at multiple angles and heights. The wind shield 8 is arranged to block the entry of return air, thereby effectively sweeping the coating liquid and avoiding the generation of return air. The above-mentioned improvement measures successfully solve the problems of uneven crystallization, cracks and bubbles caused by return air in the coating process of the functional layer of the flexible roll-to-roll perovskite solar cell, which can effectively improve the coating quality and the performance and stability of the solar cell.

[0032] The material of the windshield 8 can be a transparent material, such as glass, and plastic plates such as acrylic, so as to observe the condition of the coating liquid, and the direction of the wind knife air curtain is opposite to the movement direction of the coating liquid, further avoiding crystallization of the coating liquid during the blowing process.

[0033] Reference Figure 1-Figure 2As shown, the adjustment component includes: a bearing seat 15 arranged on the wind blade frame 11, a movable plate 14 connected to the end of the wind shield 8, and a first screw 13 that is threaded and penetrates the movable plate 14 and extends to the bearing seat 15. The end of the first screw 13 is fixedly connected to the inner ring of the bearing seat 15, and the bearing seat 15 is provided with a support point for the rotational movement of the first screw 13. The movable plate 14 is connected to the first screw 13 by threaded cooperation, so that the wind shield 8 can move freely in the second direction while maintaining the stability of the structure. When the first screw 13 rotates, the thread of the screw cooperates with the thread on the movable plate 14, so that the movable plate 14 moves along the axial direction of the screw, thereby driving the wind shield 8 to move in the second direction, thereby realizing fine-tuning of the wind curtain distance between the wind shield 8 and the wind blade body 7.

[0034] Continue to refer to Figure 1-Figure 3 As shown, the end of the wind shield 8 is arranged between the output end of the wind knife body 7 and the perovskite film to be gas quenched, and the plane where the wind shield 8 is located and the plane where the wind knife body 7 outputs the air curtain have an angle. The main function of the wind shield 8 is to guide and adjust the airflow generated by the wind knife body 7 to ensure that the airflow can effectively act on the surface of the perovskite film to be gas quenched, avoid the problem of pre-crystallization and achieve uniform crystallization. The angle between the plane where the wind shield 8 is located and the plane where the wind knife body 7 outputs the air curtain can adjust the direction and diffusion degree of the airflow, thereby optimizing the gas quenching effect.

[0035] continue Figure 2 As shown, according to different production requirements and gas quenching effects, the wind shield 8 is a flat plate, or a guide baffle is arranged along its width direction, which is not shown in the figure. The figure shows the minimum distance between the wind shield 8 and the wind knife outlet. The flat wind shield 8 has a flat surface, which adjusts the direction and diffusion degree of the airflow through the angle between its own plane and the output air curtain of the wind knife body 7. The flat plate wind shield 8 is suitable for occasions where the airflow needs to be evenly dispersed to achieve uniform cooling over a large area. The wind shield 8 with guide baffles: the guide baffle is a plate-like structure perpendicular to the plane of the wind shield 8, which divides a single airflow into multiple independent streams, or guides the airflow to flow along a specific path. When a specific area of ​​the film needs to be cooled centrally, in some embodiments, the number of guide baffles is multiple, and the angle between adjacent guide baffles is adjustable.

[0036] Reference Figure 1 As shown, the bracket 2 is provided with a driving cylinder 6, and the output end of the driving cylinder 6 is connected to the rotating member 4. The driving cylinder 6 is arranged on the bracket 2, which can provide sufficient thrust or pulling force to make the rotating member 4 move up and down along the second direction. The driving cylinder 6 can be a locking cylinder to stay at a fixed output position. The first support body 1 and the bracket 2, the second support body 5 and the rotating member 4 are all slidably connected by means of a guide rail slider 3.

[0037] Reference Figure 3 As shown, the rotating member 4 is a rotating cylinder, and the wind blade frame 11 is connected to the turntable 10 of the rotating cylinder. When the position of the wind blade needs to be adjusted, compressed air is supplied to the rotating cylinder to drive the piston inside the cylinder 6 to move. The movement of the piston is converted into the rotational movement of the turntable 10 through the mechanical structure inside the rotating cylinder, and then drives the wind blade frame 11 connected thereto to rotate. Since the wind blade body 7 and the wind shield 8 are both installed on the wind blade frame 11, their relative positions will change with the rotation of the wind blade frame 11, thereby realizing the control of the direction and intensity of the airflow.

[0038] Continue to refer to Figure 3 As shown, the turntable 10 of the rotating cylinder is provided with scale lines, and the scale lines are evenly distributed on the circumference of the turntable 10 to form a scale plate. The current position of the turntable 10 can be determined by reading the scale lines. The rotating cylinder is also provided with a locking assembly 9, which is used to lock or unlock the rotation angle of the rotating cylinder. The locking assembly 9 includes one or more locking pins, clamping devices or brakes. The locking pins can fix the turntable 10 by inserting into corresponding holes on the turntable 10; the clamping device can achieve locking by clamping the turntable 10 or other parts of the rotating cylinder; and the brake prevents the rotation of the turntable 10 by friction.

[0039] continue Figure 3 As shown, in the embodiment, the locking assembly 9 includes: a positioning seat 91 arranged on the rotating cylinder body, a movable groove 95 arranged on the positioning seat 91, a movable rod 93 with one end fixedly connected to the movable groove 95 and the other end extending to the movable groove 95, and a second screw 92 and an elastic member 94 respectively abutting against the two sides of the movable rod 93, and the elastic member 94 is a compression spring or other elastic member, which is used to provide a pre-tightening force to the movable rod 93, and when the rotating cylinder rotates, the deformation buffer provided by the elastic member 94 can avoid the backflow of the coating liquid caused by the sudden change of the direction of the wind knife due to excessive speed, so as to achieve a uniform purge effect during adjustment, ensure the contact between the second screw 92 and the movable rod 93, and provide a restoring force in the unlocked state, and the abutting surfaces of the movable rod 93, the second screw 92 and the elastic member 94 are flat.

[0040] Reference Figure 3As shown, the second screw 92 is threadedly matched and penetrates the positioning seat 91 and extends to the movable groove 95 to abut against the first side of the movable rod 93, the elastic member 94 is fixed to the positioning seat 91 and the elastic movable end is penetrated through the positioning seat 91 and extends to the movable groove 95 to abut against the second side of the movable rod 93, and the movable rod 93 is pushed to move along the movable groove 95 by rotating the second screw 92. When unlocking is required, the operator rotates the second screw 92 in the opposite direction, so that the movable rod 93 returns to the initial position under the action of the elastic member 94, and the lock of the turntable 10 is released. At the initial position, the torque of the turntable 10 generated by the abutment force of the elastic member 94 on the movable rod 93 is greater than the torque generated on the turntable 10 when the wind knife frame 11 has the maximum practical rotation angle, so as to achieve the locking effect of the elastic member 94 on the turntable 10 at any practical angle. In addition, the movable plate 14 and the positioning seat 91 are respectively embedded with a first threaded sleeve 12 and a second threaded sleeve 12 that are threadedly matched with the first screw 13 and the second screw 92.

[0041] Embodiment 2

[0042] The utility model also discloses a perovskite film production line, comprising a gas quenching device without return air as described in the first embodiment, wherein the gas quenching device is arranged on a conveying line of the production line.

[0043] In the perovskite film production line described in this embodiment, the gas quenching device is arranged on the conveyor line of the production line. The production line includes multiple workstations and equipment, including a perovskite film coating device upstream of the gas quenching device, and the gas quenching device is arranged on the downstream conveyor line to cool and crystallize the perovskite film.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A gas quenching device without return air, characterized in that: include: The frame mechanism comprises: a first support body, and a bracket movably connected to the first support body along a first direction; The driving mechanism comprises: a second support body disposed on the bracket, and a rotating member movably connected to the second support body along a second direction, wherein the first direction and the second direction are perpendicular to the plane; The wind knife mechanism comprises: a wind knife frame connected to the output end of the rotating member, a wind knife body arranged on the wind knife frame, a wind shield plate movably arranged on the wind knife frame along a second direction, and an adjustment component arranged on the wind knife frame and used to adjust the wind shield plate to move along the second direction, wherein the wind shield plate is arranged at the output end of the wind knife body.

2. A gas quenching device without return air according to claim 1, characterized in that: The adjustment assembly includes: a bearing seat arranged on the wind blade frame, a movable plate connected to the end of the wind shield plate, a first screw rod threadedly fitted and passing through the movable plate and extending to the bearing seat, and the end of the first screw rod is fixedly connected to the inner ring of the bearing seat.

3. A gas quenching device without return air according to claim 2, characterized in that: The end of the wind shield is arranged between the output end of the wind knife body and the perovskite film to be gas quenched, and the plane where the wind shield is located and the plane where the wind knife body outputs the air curtain are located have an angle.

4. A gas quenching device without return air according to claim 1, characterized in that: The wind shield is a flat plate, or a guide baffle is arranged along its width direction.

5. The gas quenching device without return air according to claim 1, characterized in that: The bracket is provided with a driving cylinder, and the output end of the driving cylinder is connected to the rotating member.

6. A gas quenching device without return air according to claim 1, characterized in that: The rotating part is a rotating cylinder, and the wind blade holder is connected to the rotating disk of the rotating cylinder.

7. A gas quenching device without return air according to claim 6, characterized in that: The rotating disk of the rotating cylinder is provided with scale lines, and the rotating cylinder is also provided with a locking assembly, which is used to lock or unlock the rotating angle of the rotating cylinder.

8. A gas quenching device without return air according to claim 7, characterized in that: The locking assembly includes: a positioning seat arranged on the rotating cylinder body, a movable groove arranged on the positioning seat, a movable rod with one end fixedly connected to the movable groove and the other end extending to the movable groove, and a second screw and an elastic member respectively abutting against two sides of the movable rod.

9. A gas quenching device without return air according to claim 8, characterized in that: The second screw thread is matched and penetrates the positioning seat and extends to the movable groove to abut the first side of the movable rod. The elastic member is fixed to the positioning seat and the elastic movable end penetrates the positioning seat and extends to the movable groove to abut the second side of the movable rod.

10. A perovskite thin film production line, characterized in that: It comprises a return air-free gas quenching device as described in any one of claims 1 to 9, wherein the gas quenching device is arranged on a conveyor line of a production line.

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