Roll-to-roll continuous annealing system suitable for flexible perovskite solar cell panel
By designing a roll-to-roll continuous annealing system, the problem of existing equipment being unable to match production speed was solved, achieving uniform annealing of perovskite solar panels and improving space utilization. It also adapts to the connection of different equipment and improves production efficiency.
Patent Information
- Application Number
- CN202422806464.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing annealing equipment cannot effectively match the production speed of roll-to-roll processes, resulting in excessively large production cycles and equipment footprints, which severely restricts the industrial application of flexible perovskite solar panels.
A roll-to-roll continuous annealing system was designed, comprising a heating chamber and a cooling chamber. By setting up unwinding and rewinding mechanisms and using annular baffles to form an annular path, the system achieves heating and cooling of perovskite solar panels. In the annealing process, a coating head and an air knife are set up to ensure uniform annealing.
This technology enables uniform annealing of perovskite solar panels, saving production space, improving space utilization, adapting to different equipment, and enhancing production efficiency.
Smart Images
Figure CN223786438U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solar cell technology, and in particular to a roll-to-roll continuous annealing system suitable for flexible perovskite solar panels. Background Technology
[0002] As a novel type of solar cell, perovskite solar cells have attracted great attention in the photovoltaic field due to their advantages such as high energy conversion efficiency, low cost, low-temperature fabrication, and ability to fabricate flexible modules.
[0003] Lightweight, flexible perovskite solar cells hold great promise for building integrated photovoltaic systems, wearable electronics, portable energy systems, and aerospace applications. Flexible perovskite solar modules can be rapidly produced using roll-to-roll processes, enabling the industrial application of perovskite solar panels. For different types of functional layers in perovskite solar panels, such as titanium oxide layers, nickel oxide layers, and functional layers prepared from various oxides, uniform annealing using roll-to-roll unrolling is required, and sometimes annealing under a protective atmosphere is necessary. Currently, commonly used annealing equipment can only match the production speed of the previous process by continuously increasing the number of furnaces, which severely restricts the production cycle of the cells or results in a very large footprint for the annealing equipment, which is detrimental to production line layout and actual production efficiency. Utility Model Content
[0004] In view of this, this application provides a roll-to-roll continuous annealing system suitable for flexible perovskite solar panels, which saves space by setting the cooling chamber inside the heating chamber.
[0005] According to one aspect of this application, a roll-to-roll continuous annealing system suitable for flexible perovskite solar panels is provided, characterized in that it includes a base, a roll-to-roll annealing chamber, an unwinding mechanism, a winding mechanism, and a coating head; the base has a trapezoidal structure and a groove is provided on the base, and the roll-to-roll annealing chamber fits into the groove; the roll-to-roll annealing chamber is provided with at least two annular chambers, including an annular heating chamber and an annular cooling chamber, and the flexible perovskite solar panel to be processed can be heated and cooled by moving along an annular path in the heating chamber and the cooling chamber; the unwinding mechanism is rotatably disposed on one side of the roll-to-roll annealing chamber and is suitable for releasing the perovskite solar panel to be processed; the winding mechanism is rotatably disposed inside the roll-to-roll annealing chamber and is suitable for winding the perovskite solar panel to be processed; the coating head is disposed on the same side of the roll-to-roll annealing chamber and the unwinding mechanism and is suitable for applying the solvent used in production to the perovskite solar panel.
[0006] In one possible implementation, the heating chamber includes a first baffle and a second baffle, the first baffle and the second baffle being annular structures, and the second baffle being sleeved inside the first baffle; the cooling chamber includes a second baffle and a third baffle, the third baffle also being annular structures, and the third baffle being sleeved inside the second baffle.
[0007] In one possible implementation, both the heating chamber and the cooling chamber are equipped with multiple drive rollers suitable for conveying perovskite solar panels.
[0008] In one possible implementation, the number of drive rollers disposed in the heating chamber is multiple, and the drive rollers in the heating chamber are arranged in a circumferential manner from the inner side of the first partition plate to the outer side of the second partition plate; the number of drive rollers disposed in the cooling chamber is multiple, and the drive rollers in the cooling chamber are arranged in a circumferential manner from the inner side of the second partition plate to the outer side of the third partition plate.
[0009] In one possible implementation, a first guide roller, a second guide roller, and a third guide roller are further included; the first guide roller is detachably disposed on the side of the unwinding mechanism away from the roll-to-roll annealing chamber, the second guide roller is detachably disposed above the unwinding mechanism and at a predetermined distance from the unwinding mechanism, and the third guide roller is detachably disposed between the second guide roller and the roll-to-roll annealing chamber.
[0010] In one possible implementation, the air knife is positioned between the coating head and the roll-to-roll annealing chamber, and is adapted to uniformly blow air onto the perovskite solar cell panel.
[0011] In one possible implementation, the heating chamber is provided with a heater, and there are multiple heaters, which are laid along the inner side of the first baffle.
[0012] In one possible implementation, the cooling chamber is provided with multiple coolers, which are laid along the inner side of the second baffle.
[0013] In one possible implementation, a temperature control system and an atmosphere control system are provided on the inner side of both the first baffle and the inner side of the second baffle; the temperature control system includes a temperature controller, a solid-state relay, a heating element, and a thermocouple assembly; the atmosphere control system includes a vacuum gauge and a charging / discharging pipeline.
[0014] In one possible implementation, the temperature of the heating chamber is α, and the temperature α ranges from 50℃ to 700℃.
[0015] The beneficial effects of this utility model are as follows: By setting up a roll-to-roll annealing chamber, the perovskite solar panel is heated and cooled in the roll-to-roll annealing chamber to complete the annealing. An unwinding mechanism and a rewinding mechanism are provided; the unwinding mechanism releases the perovskite solar panel to be processed, and the rewinding mechanism collects the annealed perovskite solar panel. A coating head is provided to apply the solvent used in production to the perovskite solar panel. Through the above settings, this application not only obtains a complete perovskite thin film but also saves production space and improves space utilization. Attached Figure Description
[0016] Figure 1 A schematic diagram of the specific structure of the roll-to-roll continuous annealing system according to an embodiment of this application is shown. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] like Figure 1 As shown, the roll-to-roll continuous annealing system for flexible perovskite solar panels includes a roll-to-roll annealing chamber, an unwinding mechanism 320, a winding mechanism 310, and a coating head 410. The roll-to-roll annealing chamber has at least two annular chambers, including an annular heating chamber 140 and an annular cooling chamber 150. The flexible perovskite solar panel to be processed can be heated and cooled by moving along an annular path between the heating chamber 140 and the cooling chamber 150. The unwinding mechanism 320 is rotatably disposed on one side of the roll-to-roll annealing chamber and is suitable for releasing the perovskite solar panel to be processed. The winding mechanism 310 is rotatably disposed inside the roll-to-roll annealing chamber and is suitable for winding the processed perovskite solar panel. The coating head 410 is disposed on the same side of the roll-to-roll annealing chamber and the unwinding mechanism 320 and is suitable for applying the solvent used in production to the perovskite solar panel.
[0023] Specifically, a roll-to-roll annealing chamber is provided for annealing the perovskite solar panels. An unwinding mechanism 320 is provided to unwind the perovskite solar panels to be processed. Therefore, the unwinding mechanism is located outside the roll-to-roll annealing chamber. In order to collect the annealed perovskite solar panels, a winding mechanism 310 is provided. The winding mechanism 310 is located inside the roll-to-roll annealing chamber. In order to produce the perovskite solar panel thin film, a coating head 410 is provided. The coating head 410 is suitable for applying the solvent used in the production to the perovskite solar panel.
[0024] In one possible implementation, the heating chamber 140 includes a first baffle 110 and a second baffle 120, the first baffle 110 and the second baffle 120 having an annular structure, and the second baffle 120 being sleeved inside the first baffle 110; the cooling chamber 150 includes a second baffle 120 and a third baffle 130, the third baffle 130 also having an annular structure, and the third baffle 130 being sleeved inside the second baffle 120.
[0025] Specifically, such as Figure 1As shown, a first baffle 110, a second baffle 120, and a third baffle 130 are provided. The second baffle 120 is fitted inside the first baffle 110, with a predetermined distance between the first baffle 110 and the second baffle 120. The third baffle 130 is fitted inside the second baffle 120, with a predetermined distance between the second baffle 120 and the third baffle 130. Thus, a heating chamber 140 is formed between the first baffle 110 and the second baffle 120, and a heating chamber 140 is formed between the second baffle 120 and the third baffle 130. The cooling chamber 150, forming the heating chamber 140 and the cooling chamber 150, are for annealing the perovskite solar panel to form an annealing chamber. The first baffle 110, the second baffle 120 and the third baffle 130 are all set in a ring structure, so that the heating chamber 140 and the cooling chamber 150 are both formed in a ring structure. This arrangement allows the perovskite solar panel to form a ring-shaped movement in the heating chamber 140 and the cooling chamber 150, passing through the heating chamber 140 and the cooling chamber 150 in sequence, saving a certain amount of space and enabling uniform annealing.
[0026] In one possible implementation, the first baffle 110, the second baffle 120, and the third baffle 130 are all provided with through channels, which are suitable for perovskite solar panels to pass through.
[0027] Furthermore, the centers of the first baffle 110, the second baffle 120, the third baffle 130, and the winding mechanism 310 are at the same center. In order to enable the perovskite solar panel to pass through the heating chamber 140 and the cooling chamber 150 in sequence, through channels are provided on the first baffle 110, the second baffle 120, and the third baffle 130. The size of the through channels is similar to the thickness of the perovskite solar panel, so that the perovskite solar panel can pass through the through channels. The gap between the perovskite solar panel and the through channels is very small, and the thin film of the perovskite solar panel will not come into contact with the through channels.
[0028] In one possible implementation, both the heating chamber 140 and the cooling chamber 150 are provided with multiple drive rollers 240, suitable for conveying perovskite solar panels.
[0029] In order to enable the perovskite solar panel to move automatically within the heating chamber 140 and the cooling chamber 150, drive rollers 240 are provided within the heating chamber 140 and the cooling chamber 150.
[0030] In one possible implementation, the number of drive rollers 240 provided in the heating chamber 140 is multiple, and the drive rollers 240 in the heating chamber 140 are arranged in a circumferential manner from the inner side of the first partition plate 110 to the outer side of the second partition plate 120.
[0031] Specifically, such as Figure 1 As shown, because the perovskite solar panel needs to enter the cooling chamber 150 from the heating chamber 140, the drive roller 240 of the heating chamber 140 is initially positioned inside the first partition 110 and near the through channel of the first partition 110. It then extends around the inner side of the first partition 110 toward the outer periphery of the second partition 120, and ends outside the second partition 120 and near the through channel of the second partition 120, which facilitates the entry of the perovskite solar panel into the cooling chamber 150.
[0032] In one possible implementation, the number of drive rollers 240 provided in the cooling chamber 150 is multiple, and the drive rollers 240 in the cooling chamber 150 are arranged in a circumferential manner from the inside of the second partition plate 120 to the outside of the third partition plate 130.
[0033] Specifically, such as Figure 1 As shown, after the perovskite solar panel is cooled in the cooling chamber 150, it is wound up by the winding mechanism 310. Therefore, the drive roller 240 of the cooling chamber 150 starts inside the second partition 120 and is located near the through channel of the second partition 120. It then moves around the inner side of the second partition 120 towards the outer periphery of the third partition 130. The drive roller 240 of the cooling chamber 150 ends outside the third partition 130 and is located near the through channel of the third partition 130, which facilitates the perovskite solar panel to enter the third partition 130 and connect with the winding mechanism 310.
[0034] In one possible implementation, a first guide roller 210, a second guide roller 220, and a third guide roller 230 are also included; the first guide roller 210 is detachably disposed on the other side of the unwinding mechanism 320 away from the roll-to-roll annealing chamber, the second guide roller 220 is detachably disposed above the unwinding mechanism 320 and at a predetermined distance from the unwinding mechanism 320, and the third guide roller 230 is detachably disposed between the second guide roller 220 and the roll-to-roll annealing chamber.
[0035] To ensure accurate placement of the perovskite solar panel into the heating chamber, a first guide roller 210, a second guide roller 220, and a third guide roller 230 are provided. The specific positions of these three guide rollers can be determined according to actual conditions. Figure 1As an example, but not limited to this example, the first guide roller 210 is detachably disposed on the other side of the unwinding mechanism 320 and the first partition plate 110, the second guide roller 120 is detachably disposed above the unwinding mechanism 320 and at a preset distance from the unwinding mechanism 320, and the third guide roller 130 is detachably disposed between the second guide roller 120 and the first partition plate 110, so as to facilitate the introduction of the perovskite solar panel into the heating chamber 140.
[0036] In one possible implementation, the air knife 420 is positioned between the coating head 410 and the roll-to-roll annealing chamber, and is suitable for uniformly blowing air onto the perovskite solar panel.
[0037] In order to produce perovskite solar cell thin films, a coating head 410 and an air knife 420 are provided. The coating head 410 is used to apply the solvent used in the production onto the perovskite solar cell panel; the air knife 420 is used to evaporate the solvent on the perovskite solar cell panel. After passing through the coating head 410 and the air knife 420, the film enters the heating chamber 140. Therefore, the coating head 410 is located between the first baffle 110 and the third guide roller 230, and the air knife 420 is located between the coating head 410 and the first baffle 110.
[0038] In one possible implementation, a heater is provided in the heating chamber 140, and the number of heaters is multiple, with the heaters laid along the inner side of the first baffle 110; a cooler is provided in the cooling chamber 150, and the number of coolers is multiple, with the coolers laid along the inner side of the second baffle 120.
[0039] Specifically, such as Figure 1 As shown, in order to utilize the temperature rise of the heating chamber 140 and the temperature drop of the cooling chamber 150, a heater is provided in the heating chamber 140 and a cooler is provided in the cooling chamber 150. To ensure that the temperature is the same in all parts of the heating chamber 140, multiple heaters are provided and laid inside the first baffle 110 to make the temperature in the heating chamber 140 uniform. To ensure that the temperature is the same in all parts of the cooling chamber 150, multiple coolers are provided and laid inside the second baffle 120 to make the temperature in the cooling chamber 150 uniform, so as to uniformly anneal the perovskite solar panel.
[0040] In one possible implementation, a temperature control system and an atmosphere control system are provided on the inner side of the first baffle 110 and the inner side of the second baffle 120; the temperature control system includes a temperature controller, a solid-state relay, a heating element and a thermocouple assembly; the atmosphere control system includes a vacuum gauge and a charging / discharging pipeline.
[0041] In one possible implementation, the temperature of the heating chamber is α, and the temperature α ranges from 50℃ to 700℃.
[0042] Specifically, because the heating temperature for producing perovskite solar cell thin films is between 50°C and 700°C, the temperature range of the heating chamber is also between 50°C and 700°C.
[0043] In one possible implementation, the first baffle 110, the second baffle 120, and the third baffle 130 are rectangular or circular ring structures.
[0044] Example 1
[0045] When this application is connected to a vacuum coating equipment, the heating chamber 140 and the cooling chamber 150 can be vacuum chambers to maintain a vacuum environment for coating and annealing, thereby ensuring the quality of coating and annealing crystallization.
[0046] Example 2
[0047] When this application is connected to a non-vacuum coating equipment, a certain flow rate of protective gas can be introduced into the heating chamber 300 and the cooling chamber 400 to maintain the annealing environment and ensure the quality of thin film deposition and annealing crystallization.
[0048] When using this application, firstly, depending on the actual situation, one can select to use a vacuum heating chamber 140 and a vacuum cooling chamber 150, or to use a gas-containing heating chamber 140 and a gas-containing cooling chamber 150.
[0049] The unwinding mechanism 510 is installed in a suitable position, and the perovskite solar panel is unwound through the unwinding mechanism 510. It is guided by the guide roller 200, and the thin film side of the perovskite solar panel does not contact the guide roller 200. Through the drive of the guide roller 200, the perovskite solar panel is driven at a constant speed through the heating chamber 300 and the cooling chamber 400 for annealing, and finally reaches the winding mechanism 520.
[0050] This application utilizes a first baffle 110, a second baffle 120, and a third baffle 130. To form the heating chamber 140 and cooling chamber 150, the first baffle 110, the second baffle 120, and the third baffle 130 are all annular structures, creating a multi-layered annular structure. To save space, heaters and coolers are provided to raise the temperature of the heating chamber 140 and lower the temperature of the cooling chamber 150, and to facilitate the winding mechanism 310 in winding the perovskite solar panel. The first guide roller 210, the second guide roller 220, and the third guide roller 230 are provided to guide the perovskite solar panel into the heating chamber 140, and the drive roller 240 is provided to allow the perovskite solar panel to move within the heating chamber 140 and the cooling chamber 150. This application, through the above configuration, not only saves space and improves space utilization, but also enables uniform annealing and adapts to different connecting equipment, making it more practical. It solves the technical problem that annealing equipment can only match the production speed of the previous process by continuously increasing the number of furnaces, which would seriously restrict the production cycle of the battery or result in a very large footprint for the annealing equipment.
[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A roll-to-roll continuous annealing system suitable for flexible perovskite solar panels, characterized in that, Includes a base, roll-to-roll annealing chamber, unwinding mechanism, rewinding mechanism, and coating head; The base has a trapezoidal structure and a groove is provided on the base, and the roll-to-roll annealing chamber fits into the groove; The roll-to-roll annealing chamber is provided with at least two annular chambers, including an annular heating chamber and an annular cooling chamber. The flexible perovskite solar panel to be processed can move along the annular path in the heating chamber and the cooling chamber for heating and cooling. The unwinding mechanism is rotatably disposed on one side of the roll-to-roll annealing chamber and is suitable for releasing the perovskite solar panel to be processed. The winding mechanism is rotatably disposed inside the roll-to-roll annealing chamber and is suitable for perovskite solar panels after winding treatment. The coating head is located on the same side of the roll-to-roll annealing chamber and the unwinding mechanism, and is suitable for applying the solvent used in production to the perovskite solar cell panel.
2. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 1, characterized in that, The heating chamber includes a first baffle and a second baffle, the first baffle and the second baffle are annular structures, and the second baffle is sleeved inside the first baffle; The cooling chamber includes a second baffle and a third baffle. The third baffle is also an annular structure and is fitted inside the second baffle.
3. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 2, characterized in that, Both the heating chamber and the cooling chamber are equipped with multiple drive rollers, which are suitable for conveying perovskite solar panels.
4. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 3, characterized in that, The number of drive rollers provided in the heating chamber is multiple, and the drive rollers in the heating chamber are arranged in a circumferential manner from the inner side of the first baffle to the outer side of the second baffle. The number of drive rollers disposed in the cooling chamber is multiple, and the drive rollers in the cooling chamber are arranged in a circumferential manner from the inside of the second baffle to the outside of the third baffle.
5. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to any one of claims 1-4, characterized in that, It also includes a first guide roller, a second guide roller, and a third guide roller; The first guide roller is detachably disposed on the other side of the unwinding mechanism away from the roll-to-roll annealing chamber. The second guide roller is detachably disposed above the unwinding mechanism and at a predetermined distance from the unwinding mechanism. The third guide roller is detachably disposed between the second guide roller and the roll-to-roll annealing chamber.
6. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 5, characterized in that, It also includes an air knife, which is disposed between the coating head and the roll-to-roll annealing chamber and is suitable for uniformly blowing air onto the perovskite solar cell panel.
7. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to any one of claims 2-4, characterized in that, The heating chamber is equipped with multiple heaters, which are laid along the inner side of the first baffle.
8. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to any one of claims 2-4, characterized in that, The cooling chamber is equipped with multiple coolers, which are laid along the inner side of the second baffle.
9. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 2, characterized in that, A temperature control system and an atmosphere control system are provided on the inner side of both the first baffle and the inner side of the second baffle. The temperature control system includes a temperature controller, a solid-state relay, a heating element, and a thermocouple assembly; The atmosphere control system includes a vacuum gauge and charging / discharging lines.
10. The roll-to-roll continuous annealing system for flexible perovskite solar panels according to claim 9, characterized in that, The temperature of the heating chamber is α, and the range of temperature α is: 50℃≤α≤700℃.