Photovoltaic cell sheet texturing process and texturing equipment

Abstract

The present invention belongs to the technical field of photovoltaic cell production, and specifically is a photovoltaic cell texturing process and texturing equipment; it comprises a frame, and a support frame is arranged on the side of the frame; a conveyor belt is arranged on the surface of the frame, and a driving component is arranged at the end of the conveyor belt; the driving component is used to drive the conveyor belt to rotate; the photovoltaic cell texturing process and texturing equipment described in the present invention, by providing a material receiving box, when in use, the battery silicon wafer is placed in the material receiving box by a manipulator, and the reaction liquid in the material receiving box covers the battery silicon wafer, so that the two sides of the battery silicon wafer are texturized synchronously; and when the material receiving box moves to the unloading end of the conveyor belt, the battery silicon wafer in the material receiving box is taken out again by the manipulator; the texturing operation of the battery silicon wafer is completed in this cycle, and both sides of the battery silicon wafer are texturized at one time; for the process requirement of texturing on both sides, the texturing efficiency of the battery silicon wafer is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic cell production, in particular to a photovoltaic cell texturing process and texturing equipment. Background Art

[0002] In the process of making solar cells, there is a process called texturing, the purpose of which is to form a pyramid-shaped velvet structure on the surface of the cell; thereby reducing the reflection of the cell surface; increasing the probability of light entering the cell; thereby increasing the photocurrent density, and thus improving the efficiency of the solar cell;

[0003] A patent application with the existing publication number CN113690331A discloses a back-contact high-efficiency photovoltaic cell texturing device, including a frame, a travel guide rail, a travel motor, a lifting mechanical arm, a cell conveying plate, a cell adsorption plate, a dust cover, a dust removal blower, a vacuum cleaner, a texturing tank, a liquid spraying pipe, a temperature control sensor, a heating bottom plate, a solution concentration sensor, a throttling solenoid valve and a liquid replenishing tank;

[0004] The above patent application sets travel guide rails, travel motors, lifting mechanical arms and other structures; it can improve the battery conversion efficiency, shorten the carrier transmission time, avoid carrier recombination, and have high process uniformity and product stability; however, in the actual process requirements, there are process requirements that both sides of the battery cell need to be texturized; the battery cell of the above patent can only be texturized on one side at a time; therefore, for the process requirement of texturizing both sides, the texturizing efficiency needs to be further improved.

[0005] To this end, the present invention provides a photovoltaic cell sheet texturing process and texturing equipment. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the photovoltaic cell sheet texturing equipment described in the present invention comprises a frame, a support frame is arranged on the side of the frame; a conveyor belt is arranged on the surface of the frame, and a driving assembly is arranged at the end of the conveyor belt; the driving assembly is used to drive the conveyor belt to rotate;

[0008] The surface of the conveyor belt is evenly provided with a plurality of receiving boxes, and the receiving boxes are used to receive battery cells; the feeding end of the conveyor belt is provided with a water injection assembly, and the water injection assembly is used to inject reaction liquid into the receiving boxes; the battery cells are taken and placed by a robot.

[0009] Preferably, a plurality of isolation blocks are arranged inside the material receiving box; when the battery cells are placed inside the material receiving box, the plurality of isolation blocks restrict the ends of the battery cells.

[0010] Preferably, a plurality of support columns are arranged inside the receiving box; when the battery cells are placed inside the receiving box, the support columns support the battery cells and the battery cells are immersed in the reaction liquid.

[0011] Preferably, a pump body is provided on the side of the material receiving box, and a conduit is connected to the output end of the pump body; an injection head is connected to the end of the conduit away from the pump body, and the injection head is arranged in the material receiving box and does not interfere with the placement of the battery cells.

[0012] Preferably, the input end of the pump body is connected to a hose, and the end of the hose is connected to a connecting piece; a water tank is provided on the side of the frame; and the connecting piece is connected to the water tank.

[0013] Preferably, the connecting piece is specifically an annular belt, which is connected to the hose; a slide groove is provided on the surface of the water tank; a plurality of through holes are provided at the bottom of the slide groove; and the annular belt is sleeved inside the slide groove.

[0014] Preferably, a drain pipe is provided on the side of the water tank.

[0015] Preferably, the material receiving box is made of lightweight plastic.

[0016] A photovoltaic cell sheet texturing process comprises the following steps:

[0017] S1. When in use, the conveyor belt is controlled to rotate intermittently through the driving component;

[0018] S2. When the conveyor belt stops, the material receiving box at the feeding end of the conveyor belt injects the reaction liquid through the water injection component;

[0019] S3, then the battery cell is placed into the receiving box by a robot, and the reaction liquid in the receiving box covers the battery cell;

[0020] S4. When the receiving box moves to the unloading end of the conveyor belt, the battery cells in the receiving box are taken out again by the robot.

[0021] Preferably, the lengths of the conveyor belt and the frame are adjusted according to the reaction time of the battery cell and the reaction liquid, so that the battery cell and the reaction liquid can fully react to form the texturing.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The photovoltaic cell texturing process and texturing equipment described in the present invention provide a receiving box. When in use, the cell is placed in the receiving box by a robot. The reaction liquid in the receiving box covers the cell, so that the texturing operation is performed on both sides of the cell simultaneously. When the receiving box moves to the unloading end of the conveyor belt, the cell in the receiving box is taken out by the robot again. In this way, the texturing operation of the cell is completed in a cycle, and both sides of the cell are texturized at one time. For the process requirement of texturing both sides, the texturing efficiency of the cell is improved.

[0024] 2. The photovoltaic cell texturing process and texturing equipment described in the present invention, by setting support columns, when the cell is placed in the inside of the receiving box, the support columns support the cell and the cell is immersed in the reaction liquid; when the cell is placed in the inside of the receiving box, the top of the support column supports the cell to prevent the cell from sinking to the bottom of the receiving box so that one side of the cell is attached and affects the texturing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a stereogram of the present invention;

[0027] Figure 2 It is a schematic diagram of the frame connection structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the position of the material receiving box of the present invention on the conveyor belt;

[0029] Figure 4 It is a schematic diagram of placing the battery cell of the present invention into the inside of the material receiving box;

[0030] Figure 5 It is a schematic diagram of the internal structure of the material receiving box of the present invention;

[0031] Figure 6 is a schematic diagram of the jet head of the present invention;

[0032] Figure 7 It is a schematic diagram of the water tank connection structure of the present invention;

[0033] Figure 8 It is a schematic diagram of a water tank of the present invention;

[0034] Fig. 9 It is a schematic diagram of the process of the present invention.

[0035] In the figure: 1. frame; 11. conveyor belt; 12. drive assembly; 13. water injection assembly; 2. material receiving box; 21. isolation block; 22. support column; 3. nozzle; 31. conduit; 32. pump body; 33. hose; 4. water tank; 41. chute; 42. endless belt; 43. drain pipe. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 3 As shown, a photovoltaic cell texturing device according to an embodiment of the present invention comprises a frame 1, a support frame 10 is arranged on the side of the frame 1; a conveyor belt 11 is arranged on the surface of the frame 1, and a driving assembly 12 is arranged at the end of the conveyor belt 11; the driving assembly 12 is used to drive the conveyor belt 11 to rotate;

[0038] The surface of the conveyor belt 11 is evenly provided with a plurality of receiving boxes 2, which are used to receive the battery cells; a water injection component 13 is provided at the feeding end of the conveyor belt 11, which is used to inject the reaction liquid into the receiving box 2; the battery cells are taken and placed by a robot;

[0039] In actual process requirements, there are process requirements that both sides of the battery cell should be textured; the above-mentioned patent battery cell texture can only be performed on one side at a time; therefore, for the process requirement of textured both sides, the textured efficiency needs to be further improved; to solve the above problems, the embodiment of the present invention provides a receiving box 2, and when in use, the conveyor belt 11 is controlled to rotate intermittently by the driving component 12; when the conveyor belt 11 stops, the receiving box 2 located at the feeding end of the conveyor belt 11 is injected with reaction liquid through the water injection component 13, and then the battery cell is placed in the receiving box 2 by a manipulator, and the reaction liquid in the receiving box 2 covers the battery cell, so that the textured operation is performed synchronously on both sides of the battery cell; and when the receiving box 2 moves to the unloading end of the conveyor belt 11, the battery cell in the receiving box 2 is taken out again by the manipulator; the textured operation of the battery cell is completed in this cycle, and both sides of the battery cell are textured at one time; for the process requirement of textured both sides, the textured efficiency of the battery cell is improved.

[0040] like Figures 4 to 6 As shown, a plurality of isolation blocks 21 are arranged inside the receiving box 2; when the battery cells are placed inside the receiving box 2, the plurality of isolation blocks 21 limit the ends of the battery cells; this ensures that the battery cells remain stable inside the receiving box 2, which is beneficial to improving the stability of the battery cell texturing process.

[0041] A plurality of support columns 22 are arranged inside the receiving box 2; when the battery cells are placed inside the receiving box 2, the support columns 22 support the battery cells and the battery cells are immersed in the reaction liquid; when the battery cells are placed inside the receiving box 2, the top ends of the support columns 22 support the battery cells to prevent the battery cells from sinking to the bottom of the receiving box 2 so that one side of the battery cells is attached and affects the texturing effect.

[0042] A pump body 32 is provided on the side of the material receiving box 2, and a conduit 31 is provided in communication with the output end of the pump body 32; a jet head 3 is provided in communication with the end of the conduit 31 away from the pump body 32, and the jet head 3 is arranged in the material receiving box 2 and does not interfere with the placement of the battery cells; when in use, the pump body 32 is controlled to start, and the pump body 32 fills air into the jet head 3 through the conduit 31, and then the air is released upward in the material receiving box 2, thereby generating upward bubbles under the battery cells, causing the battery cells to be impacted upward and fall off the support of the support column 22; ensuring that the battery cells are fully in contact with the reaction liquid in the material receiving box 2, thereby improving the texturing effect of the battery cells.

[0043] like Figures 4 to 8 As shown, the input end of the pump body 32 is connected to a hose 33, and the end of the hose 33 is connected to a connecting piece; a water tank 4 is provided on the side of the frame 1; the connecting piece is connected to the water tank 4; when the receiving box 2 enters the unloading end of the conveyor belt 11, the pump body 32 is controlled to reversely evacuate the conduit 31, and the conduit 31 draws away the reaction liquid inside the receiving box 2 through the nozzle 3, and sends it into the water tank 4 through the hose 33 and the connecting piece, so as to realize the recovery of the reaction liquid in the receiving box 2.

[0044] The connecting piece is specifically an annular belt 42, which is connected to the hose 33; a slide groove 41 is provided on the surface of the water tank 4; a plurality of through holes are provided at the bottom of the slide groove 41; the annular belt 42 is sleeved inside the slide groove 41; when the pump body 32 rotates with the conveyor belt 11, the pump body 32 drives the annular belt 42 to rotate in the slide groove 41 through the hose 33, and when rotating, the reaction liquid in the hose 33 enters the water tank 4 through the through holes on the inner wall of the slide groove 41, so that the water tank 4 collects the reaction liquid and avoids interference between the pump body 32 and the water tank 4 when rotating.

[0045] A drain pipe 43 is provided on the side of the water tank 4 ; the drain pipe 43 can timely discharge the reaction liquid collected in the water tank 4 and reuse it through the water injection assembly 13 to achieve the recycling of the reaction liquid.

[0046] The receiving box 2 is made of lightweight plastic, which is beneficial to improving the smoothness of the rotation of the conveyor belt 11 .

[0047] like Fig. 9 As shown, a photovoltaic cell sheet texturing process includes the following steps:

[0048] S1. When in use, the conveyor belt 11 is controlled to rotate intermittently by the driving assembly 12;

[0049] S2, when the conveyor belt 11 stops, the material receiving box 2 located at the feeding end of the conveyor belt 11 is injected with the reaction liquid through the water injection component 13;

[0050] S3, then the battery cell is placed into the receiving box 2 by a robot, and the reaction liquid in the receiving box 2 covers the battery cell;

[0051] S4, when the receiving box 2 moves to the unloading end of the conveyor belt 11, the battery cells in the receiving box 2 are taken out again by the robot.

[0052] During operation, the conveyor belt 11 is controlled to rotate intermittently through the driving component 12; when the conveyor belt 11 stops, the receiving box 2 located at the feeding end of the conveyor belt 11 is injected with the reaction liquid through the water injection component 13, and then the battery cell is placed in the receiving box 2 through the robot, and the reaction liquid in the receiving box 2 covers the battery cell, so that the two sides of the battery cell are texturized synchronously; and when the receiving box 2 moves to the unloading end of the conveyor belt 11, the battery cell in the receiving box 2 is taken out again by the robot; the texturizing operation of the battery cell is completed in this cycle, and both sides of the battery cell are texturized at one time; for both sides The uniform texturing process requirements improve the texturing efficiency of the battery cells; when the battery cells are placed in the receiving box 2, multiple isolation blocks 21 limit the ends of the battery cells; ensuring that the battery cells remain stable in the receiving box 2 is beneficial to improving the stability of the battery cell texturing process; when the battery cells are placed in the receiving box 2, the support columns 22 support the battery cells and the battery cells are immersed in the reaction liquid; when the battery cells are placed in the receiving box 2, the top of the support columns 22 supports the battery cells to prevent the battery cells from sinking to the bottom of the receiving box 2 so that one side of the battery cells is attached and affects the texturing effect.

[0053] When in use, the pump body 32 is controlled to start, and the pump body 32 fills air into the nozzle 3 through the conduit 31, and then the air is released upward in the receiving box 2, thereby generating upward bubbles under the battery cell, causing the battery cell to be impacted and fall off the support of the support column 22; ensuring that the battery cell is fully in contact with the reaction liquid in the receiving box 2, thereby improving the texturing effect of the battery cell; when the receiving box 2 enters the unloading end of the conveyor belt 11, the pump body 32 is controlled to evacuate the conduit 31 in the reverse direction, and the conduit 31 extracts the reaction liquid in the receiving box 2 through the nozzle 3, and sends it into the receiving box 2 through the hose 33 and the connecting piece. into the water tank 4, so as to realize the recovery of the reaction liquid in the docking material box 2; wherein when the pump body 32 rotates with the conveyor belt 11, the pump body 32 drives the annular belt 42 to rotate in the chute 41 through the hose 33, and during the rotation, the reaction liquid in the hose 33 enters the water tank 4 through the through hole on the inner wall of the chute 41, so as to realize the collection of the reaction liquid by the water tank 4, and avoid the interference between the pump body 32 and the water tank 4 during the rotation; wherein a drain pipe 43 is provided on the side of the water tank 4; the drain pipe 43 can discharge the reaction liquid collected in the water tank 4 in time, and reuse it for the second time through the water injection component 13, so as to realize the recycling of the reaction liquid.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic cell texturing device, characterized in that: The invention comprises a frame (1), wherein a support frame (10) is arranged on the side of the frame (1); a conveyor belt (11) is arranged on the surface of the frame (1), and a driving assembly (12) is arranged at the end of the conveyor belt (11); the driving assembly (12) is used to drive the conveyor belt (11) to rotate; The surface of the conveyor belt (11) is evenly provided with a plurality of receiving boxes (2), and the receiving boxes (2) are used to receive the battery cells; a water injection assembly (13) is provided at the feeding end of the conveyor belt (11), and the water injection assembly (13) is used to inject reaction liquid into the receiving box (2); the battery cells are taken and placed by a robot; a plurality of isolation blocks (21) are provided inside the receiving box (2); when the battery cells are placed inside the receiving box (2), the plurality of isolation blocks (21) limit the ends of the battery cells; A plurality of support columns (22) are arranged inside the material receiving box (2); when the battery cells are placed inside the material receiving box (2), the support columns (22) support the battery cells and the battery cells are immersed in the reaction liquid; a pump body (32) is arranged on the side of the material receiving box (2), and the output end of the pump body (32) is connected to a conduit (31); the end of the conduit (31) away from the pump body (32) is connected to a nozzle (3), and the nozzle (3) is arranged inside the material receiving box (2) and does not interfere with the placement of the battery cells.

2. The photovoltaic cell texturing equipment according to claim 1, characterized in that: The input end of the pump body (32) is connected to a hose (33), and the end of the hose (33) is connected to a connecting piece; a water tank (4) is provided on the side of the frame (1); and the connecting piece is connected to the water tank (4).

3. The photovoltaic cell texturing equipment according to claim 2, characterized in that: The connecting piece is specifically an annular belt (42), and the annular belt (42) is connected to the hose (33); a slide groove (41) is provided on the surface of the water tank (4); a plurality of through holes are provided at the bottom of the slide groove (41); and the annular belt (42) is sleeved inside the slide groove (41).

4. The photovoltaic cell texturing equipment according to claim 3, characterized in that: A drainage pipe (43) is provided on the side of the water tank (4).

5. The photovoltaic cell texturing equipment according to claim 1, characterized in that: The material receiving box (2) is made of lightweight plastic.

6. A photovoltaic cell texturing process, the process using a photovoltaic cell texturing device as described in any one of claims 1 to 5, characterized in that: The following steps are involved: S1. When in use, the conveyor belt (11) is controlled to rotate intermittently by the driving assembly (12); S2, when the conveyor belt (11) stops, the material receiving box (2) located at the feeding end of the conveyor belt (11) injects the reaction liquid through the water injection component (13); S3, then placing the battery cell into the material receiving box (2) by means of a robot, and the reaction liquid in the material receiving box (2) covers the battery cell; S4. When the receiving box (2) moves to the unloading end of the conveyor belt (11), the battery cells in the receiving box (2) are taken out again by the robot.

7. A photovoltaic cell texturing process according to claim 6, characterized in that: The lengths of the conveyor belt (11) and the frame (1) are adjusted according to the reaction time of the battery cell and the reaction liquid, so that the battery cell and the reaction liquid react fully to form the texture.

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