Solar cell coating equipment

Abstract

The utility model discloses solar cell coating equipment which comprises a box body, and the box body is sequentially provided with a plurality of coating cavities from top to bottom; a preheating heating pipe, a liquid supply pipe and a drying heating pipe are sequentially arranged at the top of the inner side of the coating cavity, and atomizing nozzles are uniformly arranged at the bottom of the liquid supply pipe; a supporting plate for placing a solar cell panel is mounted on the two transverse plates in each film coating cavity in a sliding manner; according to the utility model, the solar cell panel is preheated through the preheating heating pipe, then the coating liquid is uniformly sprayed on the surface of the preheated solar cell panel through the atomizing nozzle, and then the sprayed coating liquid is dried through the drying heating pipe, so that the coating liquid is adhered on the surface of the solar cell panel; the coating liquid is tightly adhered to the surface of the solar cell panel through preheating, spraying and drying treatment in sequence, so that the blistering phenomenon is avoided, and the overall coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, in particular to a solar cell coating device. Background Art

[0002] In the manufacturing process of crystalline silicon solar cells, a film layer needs to be prepared on the surface of the silicon wafer to passivate the surface of the silicon wafer and reduce light reflection. Usually, a layer of coating liquid is sprayed on the surface of the solar panel to form a coating layer on the surface of the solar panel that can improve the transmittance.

[0003] Existing solar panel coating equipment directly sprays the coating liquid onto the surface of the solar panel. The coating liquid has poor adhesion and is prone to bubbling, which reduces the overall coating quality. Utility Model Content

[0004] The purpose of the present invention is to provide a solar cell coating device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a solar cell coating device, comprising a box body, wherein the box body is provided with a plurality of coating cavities sequentially from top to bottom, and each coating cavity is provided with a horizontal plate on both sides thereof, wherein one end of the horizontal plate extends into the coating cavity, and the other end of the horizontal plate is located outside the box body;

[0006] The top of the inner side of the coating chamber is provided with a preheating heating pipe, a liquid supply pipe and a drying heating pipe in sequence, and atomizing nozzles are evenly arranged at the bottom of the liquid supply pipe;

[0007] A support plate for placing a solar cell panel is slidably mounted on the two horizontal plates inside each coating cavity.

[0008] Wherein, a groove for placing the solar cell panel is provided on the upper surface of the support plate.

[0009] Wherein, a slide rail is provided on the upper side of the transverse plate, and sliders cooperating with the slide rail are provided on both sides of the lower surface of the support plate, and the support plate is slidably mounted on the transverse plate through the sliders cooperating with the slide rail.

[0010] Wherein, a driving mechanism is provided on the inner side of one of the transverse plates, the driving mechanism is located inside the coating cavity, and the driving mechanism is used to drive the support plate to slide along the transverse plate.

[0011] Among them, the driving mechanism includes an active roller and a driven roller rotatably installed on the inner side of the horizontal plate, and a conveyor belt is connected between the active roller and the driven roller. The conveyor belt is located below the support plate, and the upper surface of the conveyor belt is in contact with the lower surface of the support plate. A servo motor that drives the active roller to rotate is fixedly installed on one side of the horizontal plate, and the output end of the servo motor is fixedly connected to the central axis of the active roller.

[0012] Wherein, the surface of the conveyor belt is evenly provided with anti-slip rubber protrusions.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model slides a support plate onto a horizontal plate, first slides the support plate to one end of the horizontal plate located at the outside, then places the solar panel to be coated on the support plate, and then pushes the support plate into the coating cavity along the horizontal plate, thereby pushing the support plate together with the solar panel into the coating cavity. After the solar panel enters the coating cavity, it passes through a preheating heating tube, a liquid supply tube and a drying heating tube in sequence. The solar panel is first preheated by the preheating heating tube, and then the coating liquid is evenly sprayed on the preheated surface of the solar panel through an atomizing nozzle. The sprayed coating liquid is then dried through the drying heating tube so that the coating liquid adheres to the surface of the solar panel. Through the preheating, spraying and drying processes in sequence, the coating liquid adheres tightly to the surface of the solar panel, thus avoiding bubbling and improving the overall coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall axonometric structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top structure of the coating chamber of the utility model;

[0017] Figure 3 This is a schematic diagram of the axonometric structure of the support plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the axonometric structure of the drive mechanism of the utility model.

[0019] In the figure: 10, box body; 11, coating chamber; 12, preheating heating tube; 13, drying heating tube; 14, liquid supply pipe; 15, atomizing nozzle; 20, horizontal plate; 21, slide rail; 30, support plate; 31, slider; 32, groove; 40, driving mechanism; 41, active roller; 42, driven roller; 43, conveyor belt; 44, servo motor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-4 The present invention provides a technical solution: a solar cell coating device, comprising a box body 10, wherein the box body 10 is sequentially provided with four coating cavities 11 from top to bottom, and each coating cavity 11 is provided with a horizontal plate 20 on both sides thereof, wherein one end of the horizontal plate 20 extends into the coating cavity 11, and the other end of the horizontal plate 20 is located outside the box body 10, wherein one third of the horizontal plate 20 is located inside the coating cavity 11, and two thirds of the horizontal plate 20 is located outside the coating cavity 11;

[0022] The top of the coating chamber 11 is provided with a preheating heating pipe 12, a liquid supply pipe 14 and a drying heating pipe 13 in sequence, and an atomizing nozzle 15 is evenly arranged at the bottom of the liquid supply pipe 14; a support plate 30 for placing a solar cell panel is slidably mounted on the two horizontal plates 20 inside each coating chamber 11;

[0023] In this embodiment, the support plate 30 is slidably installed on the horizontal plate 20. The support plate 30 is first slid to the outer end of the horizontal plate 20, and then the solar panel to be coated is placed on the support plate 30. Then, the support plate 30 is pushed into the coating cavity 11 along the horizontal plate 20, so that the support plate 30 and the solar panel are pushed into the coating cavity 11. After the solar panel enters the coating cavity 11, it passes through the preheating heating tube 12, the liquid supply tube 14 and the drying heating tube 13 in sequence. The solar panel is first preheated by the preheating heating tube 12, and then the coating liquid is evenly sprayed on the preheated surface of the solar panel through the atomizing nozzle 15. Then, the sprayed coating liquid is dried by the drying heating tube 13 so that the coating liquid adheres to the surface of the solar panel. Through the preheating, spraying and drying processes in sequence, the coating liquid adheres tightly to the surface of the solar panel, avoiding bubbling and improving the overall coating quality.

[0024] Among them, the liquid supply pipe 14 is connected to an external infusion pump, and the infusion pump is connected to the coating liquid storage tank through a pipeline. The infusion pipe draws out the coating liquid and then transports it into the liquid supply pipe 14. Then the coating liquid in the liquid supply pipe 14 is evenly atomized and sprayed out through the atomizing nozzle 15, so that the coating liquid is evenly sprayed on the surface of the solar panel.

[0025] Among them, the upper surface of the support plate 30 is provided with a groove 32 for placing the solar panel. When the surface of the solar panel needs to be coated, the solar panel is placed in the groove 32 on the surface of the support plate 30. Because the solar panel is spray-coated, there is no need to fix the solar panel. The support plate 30 and the solar panel can be pushed along the horizontal plate 20 through the atomizing nozzle 15.

[0026] Among them, a slide rail 21 is provided on the upper side of the horizontal plate 20, and sliders 31 cooperating with the slide rail 21 are provided on both sides of the lower surface of the support plate 30. The support plate 30 is slidably installed on the horizontal plate 20 through the sliders 31 cooperating with the slide rail 21. The sliders 31 and the slide rail 21 cooperate to facilitate the support plate 30 to slide along the horizontal plate 20.

[0027] Among them, a driving mechanism 40 is provided on the inner side of one of the horizontal plates 20, and the driving mechanism 40 is located inside the coating cavity 11. The driving mechanism 40 is used to drive the support plate 30 to slide along the horizontal plate 20. When the support plate 30 needs to be pushed into the coating cavity 11, the driving mechanism 40 can automatically drive the support plate 30 to move along the horizontal plate 20 toward the inside of the coating cavity 11.

[0028] Among them, the driving mechanism 40 includes an active roller 41 and a driven roller 42 rotatably mounted on the inner side of the transverse plate 20, and a conveyor belt 43 is connected between the active roller 41 and the driven roller 42. The conveyor belt 43 is located below the support plate 30, and the upper surface of the conveyor belt 43 is in contact with the lower surface of the support plate 30. A servo motor 44 that drives the active roller 41 to rotate is fixedly installed on one side of the transverse plate 20, and the output end of the servo motor 44 is fixedly connected to the central axis of the active roller 41. When it is necessary to push the support plate 30 into the coating chamber 11, the support plate 30 is manually pushed along the transverse plate 20 to move into the coating chamber 11, and the support plate 30 is manually pushed to move along the transverse plate 20 to move into the coating chamber 11. When the lower surface of 30 contacts one end of the conveyor belt 43, the support plate 30 is automatically moved into the coating chamber 11 through the conveyance of the conveyor belt 43, and then the solar cell panels on the surface of the support plate 30 pass under the preheating heating tube 12, the liquid supply tube 14 and the drying heating tube 13 in turn. When all the solar cell panels pass through the drying heating tube 13, the servo motor 44 drives the conveyor belt 43 to rotate in the opposite direction, and then the conveyor belt 43 drives the support plate 30 to move forward along the horizontal plate 20 in the opposite direction, thereby transporting the support plate 30 to the outside of the coating chamber 11, making it convenient for the staff to take out the coated solar panels.

[0029] In order to increase the friction between the conveyor belt 43 and the lower surface of the support plate 30, anti-slip rubber protrusions are evenly provided on the surface of the conveyor belt 43, so that when the support plate 30 contacts the conveyor belt 43, the conveyor belt 43 can drive the support plate 30 to move along the horizontal plate 20.

[0030] Working principle: When in use, first slide the support plate 30 to the end of the horizontal plate 20 located on the outside, then place the solar panel to be coated on the support plate 30, and then manually push the support plate 30 along the horizontal plate 20 to move into the coating chamber 11. When the lower surface of the support plate 30 contacts one end of the conveyor belt 43, the support plate 30 is automatically moved into the coating chamber 11 by the conveyor belt 43, and then the solar panel on the surface of the support plate 30 passes under the preheating heating tube 12, the liquid supply tube 14 and the drying heating tube 13 in turn. The solar panel is first preheated by the preheating heating tube 12. The coating liquid is then evenly sprayed onto the preheated surface of the solar panel through the atomizing nozzle 15, and then dried through the drying heating tube 13 to make the coating liquid adhere to the surface of the solar panel. After the preheating, spraying, and drying processes are carried out in sequence, after all the solar panels have passed through the drying heating tube 13, the servo motor 44 drives the conveyor belt 43 to rotate in the opposite direction, and then the conveyor belt 43 drives the support plate 30 to move forward along the horizontal plate 20 in the opposite direction, thereby transporting the support plate 30 to the outside of the coating chamber 11, making it convenient for the staff to take out the coated solar panel.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A solar cell coating device, comprising a box (10), characterized in that: The box (10) is provided with a plurality of coating cavities (11) in sequence from top to bottom, and a transverse plate (20) is provided on both sides of the interior of each coating cavity (11), one end of the transverse plate (20) extends into the coating cavity (11), and the other end of the transverse plate (20) is located outside the box (10); The top of the inner side of the coating cavity (11) is provided with a preheating heating pipe (12), a liquid supply pipe (14) and a drying heating pipe (13) in sequence, and the bottom of the liquid supply pipe (14) is evenly provided with an atomizing nozzle (15); A support plate (30) for placing a solar cell panel is slidably mounted on the two transverse plates (20) inside each coating cavity (11).

2. The solar cell coating device according to claim 1, characterized in that: The upper surface of the support plate (30) is provided with a groove (32) for placing the solar cell panel.

3. The solar cell coating device according to claim 1, characterized in that: A slide rail (21) is provided on the upper side of the transverse plate (20), and sliders (31) matching with the slide rail (21) are provided on both sides of the lower surface of the support plate (30). The support plate (30) is slidably mounted on the transverse plate (20) through the sliders (31) matching with the slide rail (21).

4. The solar cell coating device according to claim 1, characterized in that: A driving mechanism (40) is provided on the inner side of one of the transverse plates (20), and the driving mechanism (40) is located inside the coating cavity (11). The driving mechanism (40) is used to drive the support plate (30) to slide along the transverse plate (20).

5. The solar cell coating device according to claim 4, characterized in that: The driving mechanism (40) comprises an active roller (41) and a driven roller (42) rotatably mounted on the inner side of the transverse plate (20); a conveyor belt (43) is connected between the active roller (41) and the driven roller (42); the conveyor belt (43) is located below the support plate (30), and the upper surface of the conveyor belt (43) contacts the lower surface of the support plate (30); a servo motor (44) for driving the active roller (41) to rotate is fixedly mounted on one side of the transverse plate (20); the output end of the servo motor (44) is fixedly connected to the central axis of the active roller (41).

6. The solar cell coating device according to claim 5, characterized in that: The surface of the conveyor belt (43) is evenly provided with anti-slip rubber protrusions.

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