Film coating device for solar cell

Abstract

The utility model discloses a solar cell film coating device which comprises a machine body, a placing table and an air cylinder are installed on the machine body, a pair of second connecting rods are hinged to the air cylinder, a paving block is hinged to the ends, away from the air cylinder, of the second connecting rods, the interior of the paving block is hollow, and a plurality of liquid outlet pipes are installed on the paving block. The coating device for the solar cell further comprises a limiting assembly, a lifting assembly and a liquid supply assembly, the limiting assembly comprises a plurality of limiting frames, the inner diameters of the limiting frames are different, and the limiting frames are detachably installed on the upper panel of the placement table; the lifting assembly is fixedly installed on the machine body, a sliding rod is fixedly connected to the lifting assembly, and the paving block is slidably connected to the sliding rod. According to the coating device for the solar cell, the height of the paving block can be adjusted according to the thickness of the solar cell, the coating device is suitable for the solar cells of various specifications, meanwhile, the solar cells can be limited and prevented from moving during coating, and the coating quality can be improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of solar cell coating equipment, specifically relating to a coating device for solar cells. Background Technology

[0002] The main functions of solar cell coating include anti-reflection and passivation. It can effectively reduce the reflection loss of light on the silicon surface, improve the absorption efficiency of sunlight by the cell, thereby increasing the photocurrent density and thus improving the photoelectric conversion efficiency.

[0003] A horizontal coating device for solar cells, as disclosed in utility model patent application CN218333829U, includes a coating platform and a solar cell body. The coating platform has two coating placement slots, and a placement box is placed in each of the coating placement slots. The solar cell body is placed on the placement box. The coating platform is provided with two horizontal spreading plates, which can simultaneously spread two solar cell bodies, thereby improving the spreading speed and solving the problems of manual spreading, labor-intensive work and slow coating speed in the process of coating solar cells.

[0004] In practical use, due to the different specifications and thicknesses of the solar cells, this device cannot adjust the height of the paving plate according to the thickness of the solar cells. It can only be used for solar cells of a fixed specification, and its application range is small.

[0005] Furthermore, when two solar cell bodies are laid out simultaneously, it is impossible to limit the position of the cells, which may cause the cells to move on the placement box, affecting the coating quality.

[0006] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a coating device for solar cells.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a coating device for solar cells that can solve the above-mentioned problems.

[0009] To achieve the above objectives, a specific embodiment of this utility model provides a coating device for solar cells, including a body on which a placement platform and a cylinder are mounted. A pair of second connecting rods are hinged to the cylinder, and a spreading block is hinged to the end of the second connecting rod away from the cylinder. The spreading block is hollow inside and has multiple liquid outlet pipes installed on it. The coating device for solar cells further includes a limiting component, a lifting component, and a liquid supply component. The limiting component includes multiple limiting frames with different inner diameters, and the limiting frames are detachably mounted on the top plate of the placement platform. The lifting component is fixedly mounted on the body and has a sliding rod fixedly connected to it. The spreading block is slidably connected to the sliding rod. The liquid supply component stores a coating solution and is connected to the spreading block. It can adjust the height of the spreading block according to the thickness of the solar cell, making it suitable for various specifications of solar cells. It can also limit the movement of the solar cell during coating, thus improving the coating quality.

[0010] In one or more embodiments of this utility model, a first sliding groove is provided on the top plate of the placement platform, and a first slider is slidably connected in the first sliding groove. A second sliding groove communicating with the first sliding groove is provided on the side wall of the placement platform, and a lifting plate is slidably connected in the second sliding groove. One end of the lifting plate is fixedly connected to the first slider. The first slider lifts the battery cell on the placement platform, and the lower end of the battery cell can be lifted by hand or tool, which is convenient to pick up and will not damage the solution on the upper end of the battery cell.

[0011] In one or more embodiments of this utility model, a magnet block matching the lifting plate is fixedly connected to the side wall of the placement platform. The magnet block can attract the lifting plate, freeing the operator's hands, and can also limit the movement of the first slider.

[0012] In one or more embodiments of this utility model, the lifting assembly includes two pairs of fixed columns, a third sliding groove is provided in the fixed column, a fourth sliding groove is provided on the side wall of the fixed column and communicates with the third sliding groove, a second slider is slidably connected in the third sliding groove, a connecting plate is fixedly connected to a pair of second sliders, and the slide rod is fixedly connected to a pair of connecting plates.

[0013] In one or more embodiments of this utility model, a screw is threadedly connected to one of the fixed posts, and a threaded hole matching the screw is opened on the upper plate of the fixed post, and the threaded hole is connected to the third sliding groove.

[0014] In one or more embodiments of this utility model, a total thrust ball bearing is fixedly connected to the lower end face of the screw, and the end of the total thrust ball bearing away from the screw is fixedly connected to the upper plate of the second slider. A star-shaped handle is installed at the end of the screw away from the total thrust ball bearing, which can not only fix the height position of the second slider in the third sliding groove, but also adjust the height of the paving block.

[0015] In one or more embodiments of the present invention, the liquid supply assembly includes a pair of storage tanks, a pressure tank matching the storage tanks is installed in the body of the machine, a first connecting pipe connects the pressure tank and the storage tanks, and a second connecting pipe connects the pressure tank and the paving block.

[0016] In one or more embodiments of this utility model, a sliding column is slidably connected inside the pressure tank. The sliding column passes through the lower panel of the pressure tank and is sealed to the pressure tank. One end of the sliding column inside the pressure tank is integrally formed with a pressure plate that matches the inner diameter of the pressure tank. A pair of first connecting rods are fixedly connected to the cylinder. The end of the first connecting rod away from the cylinder is fixedly connected to the end of the sliding column away from the pressure plate. When the cylinder moves, it can drive the sliding column to move, so that the sliding column presses out the coating solution.

[0017] In one or more embodiments of this utility model, a first one-way valve is installed on the first connecting pipe, a second one-way valve is installed on the second connecting pipe, and a vent hole is provided on the top plate of the pressure tank to prevent the coating solution from flowing back.

[0018] In one or more embodiments of this utility model, a flow valve is installed on the outlet pipe, and the flow rate of the coating solution flowing out of the outlet pipe can be adjusted by controlling the opening degree of the flow valve.

[0019] Compared with the prior art, the coating device for solar cells of this utility model can adjust the height of the spreading block according to the thickness of the solar cell, and is applicable to solar cells of various specifications. At the same time, it can also limit the solar cell to prevent it from moving during coating, which helps to improve the coating quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a coating device for a solar cell in one embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of the placement platform of a coating device for solar cells according to an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of the lifting component of a coating device for a solar cell according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 4 This is a cross-sectional view of the lifting component of a coating device for a solar cell according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 5 This is a partial cross-sectional view of the liquid supply component of a coating device for a solar cell according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the paving block structure of a coating device for a solar cell in one embodiment of the present invention.

[0027] Explanation of key figure labels:

[0028] 1. Machine body; 2. Placement platform; 201. First sliding groove; 202. Second sliding groove; 21. Limiting frame; 22. First slider; 23. Lifting plate; 24. Magnet block; 3. Fixing column; 301. Third sliding groove; 302. Fourth sliding groove; 303. Threaded hole; 31. Second slider; 311. Connecting plate; 32. Screw; 33. Total thrust ball bearing; 34. Star handle; 35. Sliding rod; 4. Paving block; 41. Liquid outlet pipe; 411. Flow valve; 5. Cylinder; 51. First connecting rod; 52. Second connecting rod; 6. Storage tank; 61. First connecting pipe; 611. First one-way valve; 62. Pressure tank; 63. Pressure plate; 64. Sliding column; 65. Second connecting pipe; 651. Second one-way valve. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] like Figures 1 to 6As shown, a coating device for solar cells according to one embodiment of the present invention includes a body 1, a placement platform 2 and a cylinder 5 mounted on the body 1. A pair of second connecting rods 52 are hinged to the telescopic cylinder of the cylinder 5. A spreading block 4 is hinged to the end of the second connecting rod 52 away from the cylinder 5. The spreading block 4 is hollow inside and has multiple liquid outlet pipes 41 mounted on it. The coating device for solar cells also includes a limiting component, a lifting component, and a liquid supply component.

[0031] The limiting assembly includes multiple limiting frames 21, each with a different inner diameter. The limiting frames 21 are detachably mounted on the top plate of the placement platform 2. Specifically, the limiting frames 21 are adhered to the top plate of the placement platform 2, and the corresponding limiting frames 21 can be replaced according to the size of the solar cells. The limiting frames 21 limit the movement of the solar cells on the placement platform 2 during the paving operation of the paving block 4.

[0032] It is worth noting that the height of the limiting frame 21 must not exceed the thickness of the battery cell, so as to prevent the limiting frame 21 from blocking the paving block 4, which would prevent the paving block 4 from contacting the surface of the battery cell and thus affect the paving operation.

[0033] The lifting component is fixedly installed on the machine body 1. A slide bar 35 is fixedly connected to the lifting component. The paving block 4 is slidably connected to the slide bar 35. The slide bar 35 can move up and down on the machine body 1 with the lifting component, thereby driving the paving block 4 to move up and down to adapt to battery cells of different thicknesses.

[0034] The liquid supply assembly stores the coating solution and is connected to the spreading block 4. Specifically, when coating the battery cells, the storage tank 6 pours the coating solution into the spreading block 4, which then flows onto the battery cells through multiple outlet pipes 41. At this time, the telescopic cylinder on the cylinder 5 extends downward, thereby driving the second connecting rod 52 to move downward. As the second connecting rod 52 moves downward, it pushes the spreading block 4 to slide on the slide rod 35, and the spreading block 4 spreads the solution evenly on the battery cells.

[0035] It is worth noting that because the solar cells are laid flat on the placement platform 2, it is relatively difficult to remove the solar cells from the placement platform 2. Figure 1 and Figure 2 As shown, a first sliding groove 201 is provided on the top plate of the placement platform 2, and a first slider 22 is slidably connected in the first sliding groove 201. A second sliding groove 202 is provided on the side wall of the placement platform 2, which is connected to the first sliding groove 201. A lifting plate 23 is slidably connected in the second sliding groove 202, and one end of the lifting plate 23 is welded to the first slider 22.

[0036] Specifically, when taking the battery cell from the placement platform 2, lift the lifting plate 23 upwards by hand, and the first slider 22 can slide upwards within the first sliding groove 201, thereby lifting the battery cell on the placement platform 2. At this time, there is a certain distance between the battery cell and the placement platform 2, so the lower end of the battery cell can be lifted by hand or tool, which is convenient to take and will not damage the solution on the upper end of the battery cell.

[0037] Furthermore, a magnet block 24 matching the lifting plate 23 is welded to the side wall of the placement platform 2. When the lifting plate 23 is lifted upward, the magnet block 24 can attract the lifting plate 23, preventing the lifting plate 23 from sliding down, freeing the operator's hands, and also preventing the first slider 22 from sliding out of the first slide groove 201, thus limiting the movement of the first slider 22.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, the lifting assembly includes two pairs of fixed columns 3. A third sliding groove 301 is provided in the fixed column 3. A fourth sliding groove 302 connected to the third sliding groove 301 is provided on the side wall of the fixed column 3. A second slider 31 is slidably connected in the third sliding groove 301. A connecting plate 311 is integrally formed on a pair of second sliders 31. A sliding rod 35 is welded to a pair of connecting plates 311.

[0039] Specifically, when the second slider 31 slides up and down in the third sliding groove 301, it drives the connecting plate 311 and the sliding rod 35 to move up and down, thereby realizing the up and down movement of the paving block 4, which can be used for battery cells of different thicknesses.

[0040] To ensure the second slider 31 within the third sliding groove 301 is fixed at a certain height, a screw 32 is threaded onto one of the fixing posts 3. A threaded hole 303 matching the screw 32 is provided on the upper plate of the fixing post 3, and the threaded hole 303 communicates with the third sliding groove 301. A total thrust ball bearing 33 is welded to the lower end face of the screw 32. The end of the total thrust ball bearing 33 away from the screw 32 is welded to the upper plate of the second slider 31. A star-shaped handle 34 is installed at the end of the screw 32 away from the total thrust ball bearing 33.

[0041] Specifically, by gripping and rotating the star-shaped handle 34, the screw 32 engages with the threaded hole 303, allowing it to move up and down within the threaded hole 303. When the screw 32 rotates, due to the presence of the main thrust ball bearing 33, the second slider 31 will not rotate within the third sliding groove 301; it will only slide up and down within the third sliding groove 301 following the up-and-down movement of the screw 32. This allows for fixing the height of the second slider 31 within the third sliding groove 301, thereby adjusting the height of the paving block 4.

[0042] like Figure 1 and Figure 6As shown, the liquid supply assembly includes a pair of storage tanks 6, and a pressure tank 62 matching the storage tanks 6 is installed inside the body 1. A first connecting pipe 61 connects the pressure tank 62 and the storage tanks 6, and a second connecting pipe 65 connects the pressure tank 62 and the spreading block 4. The coating solution is transferred to the spreading block 4 through the first connecting pipe 61 and the second connecting pipe 65 and can flow onto the battery cells from the liquid outlet pipe 41.

[0043] To prevent excessive waste caused by excessive outflow of the coating solution, a sliding column 64 is slidably connected inside the pressure tank 62. The sliding column 64 passes through the lower panel of the pressure tank 62, and the sliding column 64 and the pressure tank 62 are sealed together. One end of the sliding column 64 inside the pressure tank 62 is integrally formed with a pressure plate 63 that matches the inner diameter of the pressure tank 62. A pair of first connecting rods 51 are welded to the cylinder 5. The end of the first connecting rod 51 away from the cylinder 5 is welded to the end of the sliding column 64 away from the pressure plate 63.

[0044] Specifically, after cylinder 5 is started, the telescopic rod on cylinder 5 extends downward, which can drive the sliding column 64 to slide inside the pressure tank 62. When the sliding column 64 slides downward inside the pressure tank 62, it drives the pressure plate 63 to make the same movement, and the pressure plate 63 can squeeze the coating solution inside the pressure tank 62 and discharge it into the paving block 4.

[0045] Furthermore, a first one-way valve 611 is installed on the first connecting pipe 61, and a second one-way valve 651 is installed on the second connecting pipe 65. A vent hole is provided on the top plate of the pressure tank 62. Specifically, when the pressure plate 63 moves downward in the pressure tank 62, the first one-way valve 611 can prevent the coating solution in the pressure tank 62 from flowing into the storage tank 6, and all the coating solution in the pressure tank 62 is discharged into the paving block 4.

[0046] As the pressure plate 63 moves upward within the pressure tank 62, the second one-way valve 651 cuts off the second connecting pipe 65, preventing backflow of the coating solution within the second connecting pipe 65 and the paving block 4. As the pressure plate 63 continues to move upward within the pressure tank 62, the air between the upper panel of the pressure plate 63 and the upper panel of the pressure tank 62 is squeezed out of the pressure tank 62, and the distance between the lower panel of the pressure plate 63 and the lower panel of the pressure tank 62 gradually increases, resulting in a decrease in pressure. The coating solution in the storage tank 6 is then drawn into the pressure tank 62, filling its interior.

[0047] Furthermore, a flow valve 411 is installed on the outlet pipe 41, and the flow rate of the coating solution flowing out of the outlet pipe 41 can be adjusted by controlling the opening of the flow valve 411.

[0048] In use, cylinder 5 is activated, placing the battery cell onto the placement platform 2. The limiting frame 21 can limit the battery cell, preventing it from sliding on the placement platform 2. Different sizes of limiting frames 21 can be selected according to the size of the battery cell, and the limiting frame 21 can be glued to the placement platform 2.

[0049] By rotating the screw 32, the connecting plate 311 can move up and down, and the connecting plate 311 drives the slide bar 35 to move up and down, thereby controlling the distance between the paving block 4 and the battery cell to accommodate battery cells of different thicknesses.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coating apparatus for solar cells, comprising a body, a placement platform and a cylinder mounted on the body, a pair of second connecting rods hinged to the cylinder, and a spreading block hinged to the end of each second connecting rod away from the cylinder, characterized in that, The paving block is hollow inside, and multiple liquid outlet pipes are installed on the paving block. The coating device for the solar cell also includes: A limiting component, comprising multiple limiting frames, each with a different inner diameter, and the limiting frames being detachably mounted on the top plate of the placement platform; A lifting assembly is fixedly installed on the machine body, and a sliding rod is fixedly connected to the lifting assembly, with the paving block slidably connected to the sliding rod; A liquid supply assembly, which stores a coating solution and is connected to the paving block.

2. The coating apparatus for a solar cell according to claim 1, characterized in that, The top plate of the placement platform is provided with a first sliding groove, and a first slider is slidably connected in the first sliding groove. The side wall of the placement platform is provided with a second sliding groove that communicates with the first sliding groove, and a lifting plate is slidably connected in the second sliding groove. One end of the lifting plate is fixedly connected to the first slider.

3. The coating apparatus for a solar cell according to claim 2, characterized in that, A magnet block that matches the lifting plate is fixedly connected to the side wall of the placement platform.

4. The coating apparatus for a solar cell according to claim 1, characterized in that, The lifting assembly includes two pairs of fixed columns. A third sliding groove is formed inside the fixed column. A fourth sliding groove is formed on the side wall of the fixed column and communicates with the third sliding groove. A second slider is slidably connected in the third sliding groove. A connecting plate is fixedly connected to a pair of second sliders. The sliding rod is fixedly connected to a pair of connecting plates.

5. The coating apparatus for a solar cell according to claim 4, characterized in that, One of the fixed posts is threaded with a screw rod, and the upper plate of the fixed post has a threaded hole that matches the screw rod. The threaded hole is connected to the third sliding groove.

6. The coating apparatus for a solar cell according to claim 5, characterized in that, A main thrust ball bearing is fixedly connected to the lower end face of the screw. The end of the main thrust ball bearing away from the screw is fixedly connected to the upper plate of the second slider. A star-shaped handle is installed at the end of the screw away from the main thrust ball bearing.

7. The coating apparatus for a solar cell according to claim 1, characterized in that, The liquid supply assembly includes a pair of storage tanks, and a pressure tank that matches the storage tanks is installed inside the machine body. A first connecting pipe connects the pressure tank and the storage tanks, and a second connecting pipe connects the pressure tank and the paving block.

8. The coating apparatus for a solar cell according to claim 7, characterized in that, A sliding column is slidably connected inside the pressure tank. The sliding column passes through the lower panel of the pressure tank and is sealed to the pressure tank. One end of the sliding column inside the pressure tank is integrally formed with a pressure plate that matches the inner diameter of the pressure tank. A pair of first connecting rods are fixedly connected to the cylinder. The end of the first connecting rod away from the cylinder is fixedly connected to the end of the sliding column away from the pressure plate.

9. The coating apparatus for a solar cell according to claim 8, characterized in that, A first check valve is installed on the first connecting pipe, a second check valve is installed on the second connecting pipe, and a vent hole is provided on the top plate of the pressure tank.

10. The coating apparatus for a solar cell according to claim 1, characterized in that, A flow valve is installed on the outlet pipe.

Images