Coating equipment for manufacturing solar cell

Abstract

The invention provides coating equipment for manufacturing a solar cell. According to the coating equipment, the air knife and the coating head are organically integrated, surface cleaning is carried out while material coating is carried out on the solar cell substrate through ingenious structural design, and coating work cannot be interfered. The coating equipment provided by the invention is simple in structure and simple to operate, and not only reduces the space occupied by the existing production line equipment, but also enables the cleaned solar cell substrate to be coated in time. According to the coating equipment provided by the invention, the cleanliness of the surface of the solar cell substrate can be effectively improved, the coating work of a solar cell panel is efficiently completed, and the performance and the manufacturing efficiency of a solar cell product are remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of solar cell production and manufacturing, and specifically, to a coating device used in the production and manufacturing process of solar cells. Background Art

[0002] Solar cells are a type of photoelectric semiconductor sheet that uses sunlight to generate electricity directly. They convert light energy into electrical energy directly through the photoelectric effect or photochemical effect. They have the advantages of being clean and pollution-free, highly reliable, long-life, and highly efficient. In particular, perovskite solar cells, as the third generation of new concept solar cells, have the advantages of high photoelectric conversion efficiency, low cost, and flexible processing. They have developed rapidly in recent years, gradually becoming comparable to silicon cells, and have reached the level of commercial application.

[0003] A key link in the production and manufacturing of solar cell industry is that the corresponding photoreactive materials need to be evenly coated on the solar cell substrate (usually a glass substrate). When coating the corresponding materials, the cleanliness of the substrate has a great impact on the life and working stability of the solar cell. Therefore, when performing coating, it is necessary to ensure the cleanliness of the surface of the solar cell substrate. It is often necessary to clean the surface of the solar cell substrate first, and then seal and transport it to the corresponding station for coating. In order to ensure that the cleaned substrate is not contaminated again, a lot of protection work needs to be done, which consumes a lot of manpower and material resources, and seriously affects the production and manufacturing efficiency of solar cells. Summary of the invention

[0004] In view of this, the present application provides a coating device for manufacturing solar cells. The coating device uses an organic integrated wind knife and a coating head to achieve "cleaning and coating" of the solar cell substrate through a corresponding control mechanism, which not only reduces the The work done to maintain the cleanliness of solar substrates saves manpower and material resources, and also improves the production efficiency of solar cells.

[0005] The technical solution provided by the present application is implemented as a coating device for manufacturing solar cells. The coating device comprises: an integrated air knife, an air knife moving bracket, a coating platform, a coating head and a control module.

[0006] The integrated wind knife includes: a plurality of air outlet arrays, and an x-axis moving assembly for moving the plurality of air outlet arrays in a horizontal forward and backward direction. The wind knife moving bracket assembly includes: a bracket for fixing the integrated wind knife, and a y-axis moving assembly for driving the integrated wind knife to move up and down.

[0007] The coating platform is arranged below the integrated air knife and the coating head, and is used to carry the solar cell substrate to be sprayed. The coating head is arranged at a position relatively to the rear of the integrated air knife. The control module is used to control the integrated air knife, the coating head and the coating platform to coat the solar cell substrate placed on the coating platform.

[0008] Furthermore, in order to avoid interference with coating when sweeping and cleaning the solar panel, a shielding cover for enclosing the sweeping area on the solar cell substrate is arranged around the air outlet array of the integrated wind knife, and a soft brush is provided at the lower edge of the shielding cover.

[0009] Furthermore, the exhaust port array is used to blow air toward the plane where the solar cell substrate is located, or to suck air from the plane of the solar cell substrate and discharge it outward.

[0010] Preferably, the control module controls the exhaust port array to firstly spray air toward the plane where the solar cell substrate is located for a predetermined first time period, and then controls the exhaust port to suck air from the plane of the solar cell substrate to discharge it outward.

[0011] Furthermore, the control module adjusts the position of the integrated air knife by controlling the x-axis moving component and the y-axis moving component; the x-axis moving component and the y-axis moving component are both implemented based on a screw and a servo motor.

[0012] Furthermore, the coating platform can move forward and backward along the x-axis direction under the control of the control module to achieve comprehensive cleaning of the solar cell substrate placed thereon.

[0013] Furthermore, a waste liquid tank is provided on at least one edge of the coating platform.

[0014] Furthermore, the coating device coats the material in the control module in the following manner: controlling the coating platform to move toward the coating head at a preset second speed, and simultaneously controlling the integrated air knife and the coating head to process their respective corresponding solar cell substrate areas.

[0015] Preferably, when cleaning the solar cell substrate, the control module controls the exhaust port array of the integrated air knife to move back and forth along the x-axis direction at a preset first speed when ejecting or sucking air.

[0016] The solution provided in this application has the following beneficial effects: The coating equipment for manufacturing solar cells provided by the present invention can realize simultaneous cleaning and coating of the solar cell substrate, effectively ensure the cleanliness of the solar cell substrate during coating, and improve the stability, life and production efficiency of the solar cell. At the same time, since cleaning and coating are carried out simultaneously, the manpower and material resources required for protective measures of the solar cell substrate before coating can be greatly reduced, thereby reducing the production cost of the solar cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A bottom view of a coating device for manufacturing a solar cell provided in the present application in one embodiment.

[0019] Figure 2 A side view of a coating device for manufacturing a solar cell provided in the present application in one embodiment.

[0020] Description of reference numerals: 1-Integrated air knife, 2-Air knife bracket assembly, 3-Coating head, 4-Coating platform, 5-waste tank, 11-exhaust port array, 12-enclosure cover DETAILED DESCRIPTION In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of this application, it should be noted that the terms "inside", "outside", "upper", "lower", "vertical", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0025] See also Figure 1 , Figure 2 , Figure 1 , Figure 2 The following are respectively a bottom view and a side view of a coating device for manufacturing a solar cell provided by the present application in one embodiment. Figure 1 , Figure 2 As shown, the coating device 100 provided in the present application includes: an integrated air knife 1, an air knife moving bracket 2, a coating head 3, a coating platform 4, a waste liquid tank 5 and a control module (not shown in the figure).

[0026] The integrated wind knife 1 comprises: a plurality of air outlet arrays 11, a shielding cover 12 enclosing a wind sweeping area on a solar cell substrate, and an x-axis moving assembly for moving the plurality of air outlet arrays in a horizontal forward and backward direction.

[0027] The lower edge of the shielding cover 12 is provided with a soft brush, which is used to isolate the airflow near the exhaust port from interfering with the coating area of ​​the coating head 3 on the solar substrate when sweeping and cleaning the solar panel. The exhaust port array 11 is used to spray air to the plane where the solar cell substrate is located, or to suck air from the plane of the solar cell substrate to discharge it outward. The x-axis moving component is realized based on a screw and a servo motor, that is, the exhaust port array 11 is driven by the corresponding servo motor to move forward and backward on the screw.

[0028] The wind knife moving bracket assembly 2 includes: a bracket for fixing the integrated wind knife, and a y-axis moving assembly (not shown in the figure) for driving the integrated wind knife to move up and down. Accordingly, the y-axis moving assembly is also implemented based on a screw and a servo motor.

[0029] The x-axis moving assembly and the y-axis moving assembly can be controlled by a control module to achieve forward, backward, upward and downward movement of the exhaust port array 11 relative to the solar cell substrate on the coating platform 4 .

[0030] The coating platform 4 is arranged below the integrated air knife 1 and the coating head 3, and is used to carry and move the solar cell substrate to be sprayed. Figure 2 In the embodiment, the coating head 3 is arranged at the rear relative to the integrated air knife. However, the coating head 3 can be arranged not only at the front relative to the integrated air knife 1, but also at the rear relative to the integrated air knife 1.

[0031] The control module is used to control the integrated air knife 1, the coating head 3 and the coating platform 4 to coat the solar cell substrate placed on the coating platform 4. The control module can be implemented in the form of a computer or a control board with a controller, and is not limited to its specific implementation form.

[0032] The coating platform 4 can move forward and backward along the x-axis direction under the control of the control module to clean different positions of the solar cell substrate placed thereon. Figure 2 As shown, the waste liquid tank 5 is arranged on the coating platform 4, and is used to collect the residual liquid blown off from the solar cell substrate.

[0033] Preferably, the control module controls the exhaust port array 11 to firstly spray air toward the plane where the solar cell substrate is located for a predetermined first time period, so that dust and other pollutants on the solar cell substrate are loosened and floated, and are out of contact with the solar cell substrate. Then, the exhaust port array 11 is controlled to suck air from the plane of the solar cell substrate so that dust and other pollutants are discharged outward. Of course, the exhaust ports at different positions can also be used to spray and suck air at the same time.

[0034] Preferably, when cleaning the solar cell substrate placed on the coating platform 4, the control module controls the exhaust port array 11 of the integrated air knife 1 to move back and forth along the x-axis direction at a preset first speed when emitting or inhaling air. In this way, a surface area of ​​the solar cell substrate can be cleaned multiple times to ensure the cleanliness of the surface area.

[0035] Furthermore, when the coating device 100 in the above embodiment is working, the control module controls the coating platform 4 to move toward the coating head 3 at a preset second speed, and at the same time controls the integrated air knife 1 and the coating head 3 to process the corresponding solar cell substrate area. In this way, the solar cell substrate can be cleaned and then coated with materials in time, that is, cleaning and coating can be carried out simultaneously.

[0036] The coating equipment for manufacturing solar cells provided by the present invention can promptly coat the material after cleaning the specific area of ​​the solar cell substrate, thereby achieving simultaneous cleaning and coating of the solar cell substrate. In this way, the cleanliness of the solar cell substrate during coating is effectively guaranteed, and the stability, lifespan and production efficiency of the solar cell are improved. Compared with the existing coating process or coating equipment for manufacturing solar cells, the coating equipment provided by the present invention can greatly reduce the manpower and material resources required for the protective measures of the solar cell substrate before coating, thereby reducing the production cost of the solar cell.

[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings. Once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A coating device for manufacturing solar cells, characterized in that: The coating equipment includes: an integrated air knife, an air knife moving bracket, a coating platform, a coating head and a control module; The integrated wind knife comprises: a plurality of air outlet arrays, and an x-axis moving assembly for moving the plurality of air outlet arrays in a horizontal forward and backward direction; The wind knife moving bracket assembly includes: a bracket for fixing the integrated wind knife, and a y-axis moving assembly for driving the integrated wind knife to move up and down; the coating head is arranged at a position relatively to the rear of the integrated wind knife; The coating platform is arranged below the integrated air knife and the coating head, and is used to carry the solar cell substrate to be sprayed; The control module is used to control the integrated air knife, the coating head and the coating platform to coat the solar cell substrate placed on the coating platform.

2. The coating device according to claim 1, characterized in that A shielding cover for enclosing a wind sweeping area on the solar cell substrate is arranged around the air outlet array of the integrated wind knife.

3. The coating device according to claim 2, characterized in that A soft brush is provided on the lower edge of the shielding cover.

4. The coating device according to claim 2, characterized in that The exhaust port array is used to blow air toward the plane where the solar cell substrate is located, or to suck air from the plane of the solar cell substrate and discharge it outward.

5. The coating device according to claim 2, characterized in that The control module controls the exhaust port array to firstly spray air toward the plane where the solar cell substrate is located for a predetermined first time period, and then controls the exhaust port to suck air from the plane of the solar cell substrate to discharge it outward.

6. The coating device according to any one of claims 1 to 5, characterized in that: The control module adjusts the position of the integrated air knife by controlling the x-axis moving component and the y-axis moving component; the x-axis moving component and the y-axis moving component are both implemented based on a screw and a servo motor.

7. The coating device according to claim 6, characterized in that The coating platform can move forward and backward along the x-axis direction under the control of the control module to achieve comprehensive cleaning of the solar cell substrate placed thereon.

8. The coating device according to claim 7, characterized in that At least one edge of the coating platform is provided with a waste liquid tank.

9. The coating device according to claim 8, characterized in that When cleaning the solar cell substrate, the control module controls the exhaust port array of the integrated air knife to move back and forth along the x-axis direction at a preset first speed when ejecting or sucking air.

10. The coating device according to claim 8 or 9, characterized in that: The coating device coats the material in the control module in the following manner: controlling the coating platform to move toward the coating head at a preset second speed, and controlling the integrated air knife and the coating head to process their respective corresponding solar cell substrate areas.

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