Device capable of improving coating stability of flexible solar cell slit
By designing a device including a frame, a limiting mechanism and a wind knife mechanism, the problem of film vibration during the coating process of flexible solar cells is solved, and the uniformity of the coating and the improvement of battery performance is achieved.
Patent Information
- Application Number
- CN202420941598.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During the coating process of existing flexible solar cell coating devices, the film will vibrate up and down, resulting in uneven coating, affecting the energy conversion efficiency and stability of the battery.
A device including a frame, a limiting mechanism and a wind knife mechanism is designed. The frame is equipped with a transmission module for the transmission of the film. The limiting mechanism provides friction and guidance through the roller and the guide. The air knife mechanism drys the film through the air knife to ensure that the film does not vibrate during the transmission and coating process.
Through this device, it is possible to effectively prevent the film from vibrating up and down during the coating process, improve the uniformity of the coating, and thereby improve the energy conversion efficiency and stability of the flexible solar cell.
Smart Images
Figure CN222753664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coating devices, in particular to a device capable of improving the slit coating stability of a flexible solar cell. Background Art
[0002] With the growing global demand for clean energy, the market for flexible roll-to-roll perovskite solar cells is also showing a rapid growth trend. As a representative of green and clean energy, solar cells have received widespread attention. Flexible roll-to-roll perovskite solar cells are lightweight, bendable, and rollable, and are widely used in wearable devices, smart phones, electronic tags, outdoor billboards, and other fields. Roll-to-roll perovskite photovoltaic cells are a type of flexible solar cell, and the coating process of their functional layers has an important influence on the performance of the cell.
[0003] The traditional roll-to-roll perovskite photovoltaic cell coating device still has a certain membrane vibration during the coating process. During the coating process, the membrane will vibrate up and down. This vibration will cause uneven coating, affecting the energy conversion efficiency and stability of the battery, thereby reducing the energy conversion efficiency and stability of the battery. Therefore, there is still a need for a more stable and reliable device to improve the stability of the flexible roll-to-roll perovskite photovoltaic cell coating process. Utility Model Content
[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem that during the coating process of the flexible solar cell coating device in the prior art, the film vibrates up and down, and this vibration will cause uneven coating, affecting the energy conversion efficiency and stability of the battery, thereby providing a device that can improve the stability of flexible solar cell slit coating.
[0005] In order to solve the above technical problems, the utility model provides a device for improving the stability of slit coating of flexible solar cells, comprising:
[0006] The frame is provided with a transmission module for conveying the film to be transmitted from one side of the frame to the other side; since the roll-to-roll perovskite battery has a flexible film, the film is limited by a limiting mechanism to meet the requirements of the slit coating process.
[0007] The limiting mechanism comprises: a roller rotatably connected to the frame, and a guide arranged on one side of the roller, wherein the roller is closely attached to one side of the film to be transmitted, and the guide is close to the other side of the film to be transmitted;
[0008] The wind knife mechanism comprises: a wind knife frame arranged on the frame body, and a wind knife movably arranged on the wind knife frame, wherein the wind knife and the roller are respectively arranged on both sides of the film to be transmitted.
[0009] In one embodiment of the present utility model, the transmission module includes: a driving motor disposed on the frame, and a guide roller connected to an output end of the driving motor, wherein the guide roller is rotatably connected to the frame via a bearing.
[0010] In one embodiment of the present invention, the wind knife frame further includes a first sliding assembly, which includes: a first support body arranged along the length direction of the frame body, a first sliding block slidably connected to the first support body, and the first sliding block is fixedly connected to the wind knife frame.
[0011] In one embodiment of the utility model, the wind knife frame is provided with a second support body along its height direction, the second support body is slidably connected to a second slider, and the wind knife is fixedly connected to the second slider.
[0012] In one embodiment of the utility model, the wind blade holder is further provided with a hand wheel, the hand wheel is connected to a driving screw, the driving screw is matched with a screw nut, and the screw nut is connected to the second slider.
[0013] In an embodiment of the present utility model, the frame is provided with a third support body along the length direction, the third support body is slidably connected to a third slider, and the third slider is fixedly connected to a support plate.
[0014] In one embodiment of the utility model, the frame is provided with a driving motor, and the output end of the driving motor is connected to a guide roller.
[0015] In one embodiment of the present invention, the guide is arranged on a support plate or a frame, and the number of the support plate, the guide, the roller and the wind knife is multiple and equal.
[0016] In one embodiment of the present invention, the driving motor and the guide roller are connected by gears or belts.
[0017] In an embodiment of the present invention, a first external thread and a second external thread are respectively formed on two sides of the guide roller, and the first external thread and the second external thread are in opposite directions.
[0018] The above technical solution of the utility model has the following advantages compared with the prior art:
[0019] The utility model discloses a device for improving the stability of slit coating of flexible solar cells. The frame supports and fixes a limiting mechanism and a wind knife mechanism. The frame is also provided with a transmission module, and the transmission module is used to transport the film to be transmitted from one side of the frame to the other side. The limiting mechanism includes a roller rotatably connected to the frame and a guide arranged on one side of the roller. The roller is rotatably connected to the frame and can rotate freely. The film is pressed against the roller and rotates. The roller is pressed against one side of the film to be transmitted and keeps close contact with the film to be transmitted to provide sufficient friction. The guide is arranged on one side of the roller and is used in conjunction with the roller to guide the running direction of the film to be transmitted. The wind knife frame is fixed on the frame to support and fix the wind knife. The wind knife is movably arranged on the wind knife frame and can be adjusted in position by the wind knife frame. The coated battery film is dried by the wind knife. Through the above arrangement, not only the wind knife can blow along the width of the film, and the wind pressure makes the film pressed downward, but the guide can also limit the film by slit to prevent the film from vibrating up and down during transmission and coating, thereby improving the uniformity of the roll-to-roll perovskite photovoltaic cell coating. 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 coating device of the utility model;
[0022] Figure 2 It is a structural schematic diagram of the screw part of the utility model;
[0023] Figure 3 It is a structural schematic diagram of the wind knife holder part of the utility model;
[0024] Figure 4 This utility model Figure 1 A cross-sectional view of
[0025] Figure 5 It is a schematic diagram of the positions of the roller and the guide of the utility model.
[0026] Explanation of the reference numerals in the specification: 1. frame; 2. first support body; 3. first slider; 4. wind knife frame; 5. wind knife; 6. hand wheel; 7. drive motor; 8. guide roller; 9. first external thread; 10. second external thread; 11. second support body; 12. second slider; 14. drive screw; 15. screw nut; 16. third support body; 17. third slider; 18. support plate; 19. guide; 20. roller; 21. roller frame. DETAILED DESCRIPTION
[0027] 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.
[0028] Example
[0029] Reference Figure 1-Figure 5 As shown, the utility model is a device for improving the stability of slit coating of flexible solar cells, comprising:
[0030] A frame 1 is provided with a transmission module for conveying the film to be transmitted from one side of the frame 1 to the other side;
[0031] The limiting mechanism includes: a roller 20 rotatably connected to the frame 1, and a guide 19 disposed on one side of the roller 20, wherein the roller 20 is close to one side of the film to be transmitted, and the guide 19 is close to the other side of the film to be transmitted;
[0032] The wind knife mechanism comprises: a wind knife frame 4 arranged on the frame body 1, and a wind knife 5 movably arranged on the wind knife frame 4, wherein the wind knife 5 and the roller 20 are respectively arranged on both sides of the film to be transported.
[0033] The utility model discloses a device for improving the stability of slit coating of flexible solar cells. The frame 1 supports and fixes the limiting mechanism and the wind knife 5 mechanism. The frame 1 is also provided with a transmission module. The transmission module is used to transport the film to be transmitted from one side of the frame 1 to the other side. The limiting mechanism includes a roller 20 rotatably connected to the frame 1 and a guide 19 arranged on one side of the roller 20. The roller 20 is rotatably connected to the frame 1 and can rotate freely. The film is pressed against the roller 20 and rotates. The roller 20 is pressed against one side of the film to be transmitted and keeps close contact with the film to be transmitted to provide sufficient friction. The guide 19 is arranged on one side of the roller 20 and is used in conjunction with the roller 20 to guide the running direction of the film to be transmitted. The wind knife frame 4 is arranged on the frame 1 to support and fix the wind knife 5. The wind knife 5 is movably arranged on the wind knife frame 4 and can be adjusted in position by the wind knife frame 4. The coated battery film is dried by the wind knife 5. Through the above arrangement, not only can the wind knife 5 blow along the width of the film and the wind pressure makes the film stick downward, but the guide 19 can also perform slit limit on the film to prevent the film from vibrating up and down during transmission and coating, thereby solving the problem of uneven coating of roll-to-roll perovskite photovoltaic cells.
[0034] In some embodiments, the air knife 5 is connected to a hot air duct to reduce the drying time of the coating liquid. Figure 5 As shown, the film is arranged between the roller 20 and the guide 19 , and the roller 20 is rotatably connected to the frame 1 through a roller frame 21 , and the roller frame 21 is arranged on the frame 1 .
[0035] The following optimizations are made during the coating process: 1. By designing a custom guide station to be close to the base film and guide the movement of the film, the guide station has a shape and size that matches the roller, and can accurately control the position and movement trajectory of the film. The design of the custom guide should take into account the characteristics of the film's up and down vibration to ensure that the film and the roller 20 always maintain close contact.
[0036] 2. A vibration suppression device is installed under the roller 20. The vibration suppression device can be the roller frame 21 in this embodiment, which is used to reduce the vibration amplitude of the film. The vibration suppression device can use shock-absorbing materials, shock-absorbing structures and other technical means to effectively reduce the vibration of the film and improve the uniformity of coating.
[0037] 3. In order to ensure the stability of the coating process, the coating mechanism can also be optimized. For example, an automatic adjustment device can be used to monitor and adjust the gap between the roller and the film in real time to ensure that the gap is always kept within a stable range during the coating process.
[0038] Reference Figure 1 As shown, the transmission module includes: a driving motor 7 arranged on the frame 1, a guide roller 8 connected to the output end of the driving motor 7, the guide roller 8 is rotatably connected to the frame 1 through a bearing, and the film is placed on the transmission module of the frame 1 to ensure that the film is in direct or indirect contact with the guide roller 8, and then the driving motor 7 is started, and the driving motor 7 outputs power to drive the guide roller 8 to rotate, thereby starting the film transmission process.
[0039] Reference Figure 1 , Figure 4 As shown, the wind blade frame 4 also includes a first sliding component, which includes: a first support body 2 arranged along the length direction of the frame body 1, a first slider 3 slidably connected to the first support body 2, the first slider 3 is fixedly connected to the wind blade frame 4, and the working principle of the first sliding component is based on the principle of sliding mechanical connection. When the position of the wind blade frame 4 needs to be adjusted, the operator or the automatic control system will apply force to the wind blade frame 4, and the wind blade frame 4 slides back and forth through the cooperation of the first slider 3 and the first support body 2, so as to facilitate the increase or decrease of the assembly quantity and spacing of the wind blade frame 4 and the wind blade 5. The sliders of the first sliding component, the second sliding component, and the third sliding component can be respectively set with their support bodies to set damping to achieve a static state, and corresponding card-connection locking and power locking can also be set, such as locking by means of latches, buckles, motors, hydraulics, etc.
[0040] Reference Figure 2-Figure 3As shown, the wind knife 5 frame 4 is provided with a second support body 11 along its height direction, and the second support body 11 is slidably connected to the second slider 12, and the wind knife 5 is fixedly connected to the second slider 12. The wind knife 5 frame 4 is used to support and adjust the position of the wind knife 5. The wind knife 5 frame 4 is provided with a second support body 11 along its height direction, which is used to provide support and positioning of the wind knife 5 in the height direction. The second support body 11 is slidably connected to the second slider 12, so that the wind knife 5 can be adjusted along the height direction. The wind knife 5 is fixedly connected to the second slider 12 and can be fixed by bolts, welding, etc. The working principle of the wind knife 5 device is to use high-speed airflow to dry, clean or cool objects. When the wind knife 5 device is working, the airflow enters from the air inlet of the wind knife 5, accelerates through the channel inside the wind knife 5, and is ejected from the air outlet of the wind knife 5 at high speed to form a high-speed airflow.
[0041] Continue to refer to Figure 3 As shown, the wind blade frame 4 is also provided with a handwheel 6, and the handwheel 6 is connected to a driving screw 14, and the driving screw 14 is matched with a screw nut 15, and the screw nut 15 is connected to the second slider 12. The wind blade frame 4 is provided with a handwheel 6, and the handwheel 6 can be a circular structure with anti-slip textures thereon to facilitate rotation by the operator. The surface of the drum 20 can also increase the anti-slip coating or texture to increase the friction between the film and the roller to prevent sliding and uneven coating. The handwheel 6 is connected to the driving screw through a connecting piece.
[0042] Reference Figure 1 , Figure 4 As shown, the frame 1 is provided with a third support body 16 along the length direction, the third support body 16 is slidably connected to a third slider 17, the third slider 17 is fixedly connected to a support plate 18, the support plate 18 moves along the length direction of the frame 1 through the third slider 17, the support plate 18 is used to place the film to be coated, and the support plate 18 is connected to the guide roller 8.
[0043] See also Figure 1 As shown, the frame 1 is provided with a driving motor 7, the output end of the driving motor 7 is connected to a guide roller 8, and the driving motor 7 is a servo motor that can rotate forward and reverse to drive the support plate 18 to move back and carry the battery membrane again.
[0044] The guide 19 is arranged on the support plate 18 or the frame 1. The number of the support plate 18, the guide 19, the roller 20 and the wind knife 5 are multiple and equal. When it is arranged on the support plate 18, the guide 19 can move with the support plate 18. When it is arranged on the frame 1, the guide 19 limits the film at a fixed position, such as one side or both sides of the coating location. The position of the roller 20 is also set accordingly with the guide 19.
[0045] Reference Figure 1 As shown, the driving motor 7 and the guide roller 8 are connected by gears (not shown) or belts. Gear connection: power and motion are transmitted through mutually meshing gears. This connection method can achieve higher transmission accuracy and torque transmission capacity, and is suitable for occasions that require precise control of speed and position. Belt connection: power and motion are transmitted through a belt. This connection method can achieve a larger transmission ratio and flexible connection, and is suitable for occasions that require a larger transmission distance or vibration absorption.
[0046] Continue to see Figure 1 As shown, the first external thread 9 and the second external thread 10 are respectively provided on both sides of the guide roller 8, and the directions of the first external thread 9 and the second external thread 10 are opposite. The first external thread 9 and the second external thread 10 are respectively provided on both sides of the roller body, and the directions of the first external thread 9 and the second external thread 10 are opposite and both face the center, so that the support plate 18 moves closer to the center when driven, forming a guiding and positioning effect.
[0047] 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 device for improving the stability of slit coating of flexible solar cells, characterized in that: include: A frame, which is provided with a transmission module for transporting the film to be transported from one side of the frame to the other side; The limiting mechanism comprises: a roller rotatably connected to the frame, and a guide arranged on one side of the roller, wherein the roller is closely attached to one side of the film to be transmitted, and the guide is close to the other side of the film to be transmitted; The wind knife mechanism comprises: a wind knife frame arranged on the frame body, and a wind knife movably arranged on the wind knife frame, wherein the wind knife and the roller are respectively arranged on both sides of the film to be transmitted.
2. The device for improving the slit coating stability of a flexible solar cell according to claim 1, characterized in that: The transmission module comprises: a driving motor arranged on the frame, and a guide roller connected to an output end of the driving motor, wherein the guide roller is rotatably connected to the frame via a bearing.
3. The device for improving the slit coating stability of a flexible solar cell according to claim 2, characterized in that: The wind blade frame further includes a first sliding assembly, which includes: a first support body arranged along the length direction of the frame body, a first sliding block slidably connected to the first support body, and the first sliding block is fixedly connected to the wind blade frame.
4. The device for improving the slit coating stability of a flexible solar cell according to claim 1, characterized in that: The wind knife frame is provided with a second support body along its height direction, the second support body is slidably connected with a second slider, and the wind knife is fixedly connected to the second slider.
5. The device for improving the slit coating stability of a flexible solar cell according to claim 1, characterized in that: The wind blade support is also provided with a hand wheel, the hand wheel is connected to a driving lead screw, the driving lead screw is matched with a lead screw nut, and the lead screw nut is connected to the second sliding block.
6. The device for improving the slit coating stability of a flexible solar cell according to claim 1, characterized in that: The frame is provided with a third support body along the length direction, the third support body is slidably connected with a third sliding block, and the third sliding block is fixedly connected with a support plate.
7. The device for improving the stability of slit coating of flexible solar cells according to claim 1, characterized in that: The frame is provided with a driving motor, and the output end of the driving motor is connected with a guide roller.
8. The device for improving the stability of slit coating of flexible solar cells according to claim 1, characterized in that: The guide is arranged on a support plate or a frame, and the number of the support plate, the guide, the roller and the wind knife is multiple and equal.
9. The device for improving the stability of slit coating of flexible solar cells according to claim 7, characterized in that: The driving motor and the guide roller are connected and driven by gears or belts.
10. The device for improving the stability of slit coating of flexible solar cells according to claim 7, characterized in that: A first external thread and a second external thread are respectively formed on two sides of the guide roller, and the first external thread and the second external thread are in opposite directions.