Etching device for producing solar cells

Abstract

An etching device for solar cell production belongs to the technical field of solar cell production, and specifically includes an etching box, an etching liquid circulation processing mechanism, a position conversion mechanism, a synchronous adjustment mechanism and an etching basket. The etching liquid circulation processing mechanism is arranged in the etching box, a support plate is arranged in the etching box, the position conversion mechanism is fixedly arranged on the support plate, the etching liquid circulation processing mechanism is connected to the position conversion mechanism, the synchronous adjustment mechanism is fixedly connected to the position conversion mechanism, and the etching basket is detachably connected to the synchronous adjustment mechanism. The device can simultaneously complete the etching of solar cells and the loading and unloading of solar cells to improve the production efficiency of solar cells. In the device, the belt conveyor with a push drive function is arranged in cooperation with the etching basket with a detachable structure, so as to further improve the convenience of installing and disassembling the etching basket containing solar cells.

Description

Technical Field

[0001] The invention belongs to the technical field of solar cell production, and in particular relates to an etching device for solar cell production. Background Art

[0002] Solar cells, also known as "solar chips" or "photovoltaic cells", are thin sheets of optoelectronic semiconductors that use sunlight to generate electricity directly. When light that meets certain illumination conditions shines on a solar cell, it can instantly output voltage and generate current in the presence of a circuit. As a green energy source, the solar cell industry has continued to develop in recent years.

[0003] Etching is a technique that removes materials by chemical reaction or physical impact. Etching technology can be divided into two categories: wet etching and dry etching. Wet etching is commonly used in two ways: immersion and spraying. Specifically, it uses chemical solutions to dissolve or corrode solar cells for processing.

[0004] The current etching device cannot load and unload solar cells and etch at the same time. The etching work needs to be suspended while loading and unloading solar cells, resulting in low etching efficiency of solar cells. In addition, for wet etching, as the production time accumulates, black oily dirt will be deposited in the etching tank, which seriously affects the characteristics of the etching solution in the etching tank, resulting in slow etching speed and poor effect. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an etching device for solar cell production to partially solve the problems raised in the above background technology.

[0006] The present invention provides the following technical solutions: an etching device for solar cell production proposed by the present invention comprises an etching box, an etching liquid circulation processing mechanism, a position conversion mechanism, a synchronous adjustment mechanism and an etching basket, wherein a driving chamber and an etching chamber are provided in the etching box, a support plate is provided in the driving chamber, the support plate divides the driving chamber into an etching liquid circulation driving chamber and a position conversion driving chamber, the position conversion mechanism is fixedly arranged on the support plate, the synchronous adjustment mechanism is fixedly connected to the position conversion mechanism, the etching basket is detachably connected to the synchronous adjustment mechanism, the etching basket is provided with at least two groups, a plurality of baffles are provided in the etching basket, the etching chamber is provided with an upper opening, a baffle is provided in the etching chamber, the baffle divides the etching chamber into an etching trough and an etching liquid filter chamber, a liquid adding pipe is provided on the side wall of the etching liquid filter chamber, the etching trough and the etching liquid filter chamber are connected by a liquid infusion pipe, the etching liquid circulation processing mechanism is installed in the etching liquid filter chamber and the etching liquid circulation driving chamber, and the etching liquid circulation processing mechanism is connected to the position conversion mechanism;

[0007] It also includes a belt conveyor, which is arranged outside the etching box. A plurality of groups of push plates are evenly arranged on the belt of the belt conveyor, and the interval between two adjacent groups of push plates is not less than the size of the etching basket.

[0008] Furthermore, in the present scheme: in order to realize the circulation treatment of etching liquid, on the one hand, the quality of etching liquid is improved, and on the other hand, the fluidity of etching liquid in etching tank is improved to improve etching efficiency, the etching liquid circulation treatment mechanism includes a bracket, a circulation pump and a filter cartridge, the bracket is fixedly arranged on the inner bottom wall of etching liquid circulation driving cavity, the circulation pump is fixedly arranged on the bracket, the circulation pump is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the side wall of etching liquid filter cavity, the liquid outlet pipe is connected to the position conversion mechanism, the filter cartridge is fixedly arranged on the bottom wall of etching liquid filter cavity, and the lower end of the filter cartridge is provided with a waste outlet, the waste outlet is provided with a switch valve, and one end of the infusion tube is fixedly arranged in the filter cartridge.

[0009] Furthermore, in the present solution: the filter cartridge is composed of a cylindrical upper portion and a funnel-shaped bottom portion, the cylindrical upper portion is a mesh structure, and the funnel-shaped bottom portion is a solid plate.

[0010] Further, in the present scheme: in order to ensure the filtering efficiency of the etching liquid and avoid the clogging of the cylindrical upper mesh of the filter cartridge, a cleaning mechanism is also provided on the etching box, and the cleaning mechanism includes a protective shell, a suction pump and a suction pipe, the protective shell is fixedly arranged on the inner top wall of the etching liquid filtering cavity, a rotating motor is fixedly arranged on the side wall of the protective shell, and an active conical wheel is fixedly arranged on the output shaft of the rotating motor, the suction pipe penetrates and rotates on the bottom wall of the protective shell, and the lower end of the suction pipe is rotatably located in the filter cartridge, a driven conical wheel is fixedly arranged on the upper end of the suction pipe, and the driven conical wheel is meshed with the active conical wheel, a plurality of groups of suction heads are evenly arranged on the part of the suction pipe located in the filter cartridge, and the suction heads face the side wall of the filter cartridge, a collecting box is fixedly installed on the side wall of the etching box, the suction pump is fixedly arranged on the side wall of the etching box, an inlet pipe and an outlet pipe are connected to the suction pump, the inlet pipe penetrates the side wall of the etching box and is connected to the suction pipe, and the outlet pipe is connected to the collecting box.

[0011] Furthermore, in the present scheme: in order to realize the position conversion of the etching basket compared with the etching trough and the belt conveyor, the position conversion mechanism includes a position conversion motor and a rotating support shaft, the position conversion motor is fixedly arranged on the support plate, a driving gear is fixedly arranged on the output shaft of the position conversion motor, the rotating support shaft is rotatably arranged on the top wall of the etching box, the rotating support shaft is a hollow shaft, the liquid outlet pipe is rotatably connected to the rotating support shaft, and the rotating support shaft is communicated with the liquid outlet pipe, the synchronous adjustment mechanism is fixedly arranged on the upper end of the rotating support shaft, a driven gear is fixedly arranged on the rotating support shaft, and the driven gear is fixedly connected to the driving gear.

[0012] Furthermore, in the present scheme: in order to achieve the depth position adjustment of the etching basket compared to the etching groove, the synchronous adjustment mechanism includes an adjustment plate, the adjustment plate is fixedly arranged on the upper end of the rotating support shaft, an adjustment drive cavity is opened in the adjustment plate, an adjustment motor is fixedly arranged on the adjustment plate, a height adjustment component is rotatably arranged on the adjustment plate, the number of groups of the height adjustment components is the sum of the number of groups of the etching grooves and the belt conveyor, one group of the height adjustment components is connected to the output shaft of the adjustment motor, two adjacent groups of the height adjustment components are connected by a driving belt, the etching basket is detachably connected to the height adjustment component, a connecting pipe is fixedly connected to the adjustment plate, the connecting pipe is rotatably connected to the rotating support shaft, a circulating pipe is connected between the connecting pipe and the height adjustment component, the circulating pipe is a deformable hose, so that it can be deformed in coordination with the lifting and lowering of the mounting plate, and an electromagnetic valve is arranged on the connecting pipe of each group of the height adjustment components.

[0013] Specifically, in the present scheme: each group of the height adjustment components includes two threaded rods and nut tubes, the upper ends of the threaded rods are rotatably arranged in the adjustment drive cavity, a group of the threaded rods and the output shaft of the adjustment motor are correspondingly fixed with a group of belt pulleys, the two threaded rods are correspondingly fixed with a group of synchronous disks, a threaded rod of two adjacent groups of height adjustment components is correspondingly fixed with a group of synchronous disks, the two corresponding groups of synchronous disks are sleeved with driving belts, the nut tubes are connected to the threaded rods by threads, the lower ends of the two groups of nut tubes are fixed with mounting plates, the lower surface of the mounting plate is fixed with a hollow spray plate, the spray plate is located directly above the etching basket, a plurality of groups of spray heads are evenly distributed on the lower surface of the spray plate, and the circulation pipe is connected to the spray plate.

[0014] Furthermore, in the present scheme: in order to realize convenient installation and disassembly between the etching basket and the mounting plate, a connecting mechanism is provided on the mounting plate, and the connecting mechanism includes a connecting plate, a fixing plate and a positioning plate, and the connecting plate is fixedly provided with four groups at the four corners of the mounting plate, and an embedding slot is provided on the lower surface of the connecting plate, and four groups of embedding plates are provided at the four corners of the upper surface of the etching basket, and the embedding plates are snap-fitted into the embedding slots, and a positioning hole is provided on the embedding plate, and a positioning pin adapted for the positioning hole is fixedly provided on one side of the positioning plate, and a fixing hole is penetrated through the positioning plate, and the fixing plate is fixedly provided on the mounting plate, and a fixing pin is slidably provided on the fixing plate, and the lower end of the fixing pin is adapted for the fixing hole, and the upper end of the fixing pin is fixedly provided with a limiting plate, and the limiting plate is located above the fixing plate, and a baffle is provided at the lower part of the fixing pin, and a fixing spring is sleeved on the fixing pin, and the two ends of the fixing spring are respectively connected to the fixing plate and the baffle.

[0015] Furthermore, in the present solution, in order to improve the convenience of installing and disassembling the etching basket through the cooperation of the belt conveyor, a rolling groove is opened above the embedding slot, and a plurality of groups of balls are evenly arranged on the upper surface of the embedding plate, and the embedding plate is arranged in the rolling groove by the rolling of the balls.

[0016] Furthermore, in this solution: in order to further improve the etching efficiency of the solar cell, two groups of etching chambers are symmetrically provided on both sides of the driving chamber.

[0017] The beneficial effects achieved by the present invention using the above structure are as follows:

[0018] 1. In the technical solution of the present invention, the position conversion mechanism is set to achieve the position adjustment of the etching basket compared with the etching tank and the belt conveyor. While etching one or more groups of solar cells in the etching baskets, the loading and unloading of solar cells in the remaining etching baskets is completed synchronously, thereby improving the etching processing efficiency of solar cells.

[0019] In this solution, the driving and pushing of the pushing plate on the belt conveyor and the detachable etching basket are used to improve the convenience of installing and removing the etching basket. At the same time, the setting of the ball further improves the smoothness of the movement of the etching basket compared with the mounting plate, thereby improving the installation and removal efficiency of the etching basket.

[0020] 2. In the technical scheme of the invention, the etching liquid circulation treatment mechanism is set up to realize the circulation of the etching liquid in the etching tank and the etching liquid filter chamber, and the etching liquid is synchronously filtered while circulating, thereby ensuring the quality of the etching liquid, thereby ensuring the etching speed and effect; at the same time, the cleaning mechanism is set up to realize the cleaning of the filter cartridge, effectively avoiding the clogging of the filter cartridge filter screen, and ensuring the filtering treatment efficiency of the etching liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure in the main viewing direction of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention when viewed from above;

[0024] Figure 3 for Figure 2 A partial enlarged view of part A;

[0025] Figure 4It is a schematic cross-sectional structural diagram of an etching box according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 A partial enlarged view of part B;

[0027] Figure 6 A schematic diagram of the internal structure of the regulating drive cavity according to an embodiment of the present invention;

[0028] Figure 7 It is a structural schematic diagram of a height adjustment assembly and a mounting plate according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the connection structure between the etching basket and the mounting plate according to an embodiment of the present invention;

[0030] Fig. 9 It is a schematic cross-sectional structural diagram of a mounting plate according to an embodiment of the present invention.

[0031] Among them, 1. etching box, 2. etching liquid circulation treatment mechanism, 3. position conversion mechanism, 4. synchronous adjustment mechanism, 5. etching basket, 6. support plate, 7. etching liquid circulation drive chamber, 8. position conversion drive chamber, 9. baffle plate, 10. partition plate, 11. etching tank, 12. etching liquid filter chamber, 13. liquid adding pipe, 14. infusion pipe, 15. belt conveyor, 16. push plate, 17. bracket, 18. circulation pump, 19. filter cartridge, 20. liquid inlet pipe, 21. liquid outlet pipe, 22. waste outlet, 23. protective shell, 24. suction pump, 25. suction pipe, 26. rotating motor, 27. active conical wheel, 28. driven conical wheel Wheel, 29, suction head, 30, collection box, 31, inlet pipe, 32, outlet pipe, 33, position conversion motor, 34, rotating support shaft, 35, driving gear, 36, driven gear, 37, adjustment plate, 38, adjustment motor, 39, driving belt, 40, connecting pipe, 41, circulation pipe, 42, threaded rod, 43, nut cylinder, 44, mounting plate, 45, spray plate, 46, spray head, 47, connecting plate, 48, fixing plate, 49, positioning plate, 50, embedded slot, 51, embedded plate, 52, positioning pin, 53, fixing pin, 54, limit plate, 55, baffle, 56, fixing spring, 57, rolling groove, 58, ball. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0034] This embodiment is a technical solution improvement proposed to address the problem that the current etching device cannot simultaneously load and unload solar cells and etch, resulting in low etching production efficiency of solar cells, and as production time accumulates, black oily dirt will be deposited in the etching tank 11, affecting the characteristics of the etching solution.

[0035] Specifically, see Figure 1 and Figure 2 The present embodiment provides an etching device for producing solar cells, comprising an etching box 1, an etching liquid circulation processing mechanism 2, a position conversion mechanism 3, a synchronous adjustment mechanism 4 and an etching basket 5. A driving chamber and an etching chamber are provided in the etching box 1. A support plate 6 is provided in the driving chamber. The support plate 6 divides the driving chamber into an etching liquid circulation driving chamber 7 and a position conversion driving chamber 8. The position conversion mechanism 3 is fixedly arranged on the support plate 6. The synchronous adjustment mechanism 4 is fixedly connected to the position conversion mechanism 3. The etching basket 5 is detachably connected to the synchronous adjustment mechanism 4. The etching basket 5 is provided with at least two groups. By setting two or more groups of etching baskets 5, the solar cells in different etching baskets 5 can be etched or loaded and unloaded. A plurality of baffles 9 are provided in the etching basket 5. Under the action of the baffles 9, the interior of the etching basket 5 is divided into a plurality of placement intervals. The solar cells to be etched are placed between two adjacent groups of baffles 9.

[0036] During specific use, the etching basket 5 can be driven to adjust its position relative to the etching chamber under the action of the position conversion mechanism 3, and can be driven to adjust its height relative to the etching chamber under the action of the synchronous adjustment mechanism 4. The etching basket 5 is adjusted to above the position of the etching chamber under the action of the position adjustment, and the etching basket 5 is moved into the etching chamber under the action of the synchronous adjustment mechanism 4 to realize etching work; when the position conversion mechanism 3 adjusts the etching basket 5 to the position corresponding to the etching chamber, the etching action of the solar cell can be realized, and when the position conversion mechanism 3 transfers the etching basket 5 from above the etching chamber, the loading and unloading of the solar cell can be realized. Through the cooperation of at least two groups of etching baskets 5, while etching is being carried out in one group of etching baskets 5, the solar cells in another group of etching baskets 5 can be loaded and unloaded, thereby ensuring the etching production efficiency of the solar cell.

[0037] Specifically, see Figure 1 and Figure 4In this embodiment, the etching chamber is open at the upper end, and a partition 10 is provided in the etching chamber. The partition 10 divides the etching chamber into an etching tank 11 and an etching liquid filter chamber 12. A liquid adding pipe 13 is provided on the side wall of the etching liquid filter chamber 12. The etching tank 11 and the etching liquid filter chamber 12 are connected by a liquid infusion pipe 14. The etching liquid circulation treatment mechanism 2 is installed in the etching liquid filter chamber 12 and the etching liquid circulation drive chamber 7. The etching liquid circulation treatment mechanism 2 is connected to the position conversion mechanism 3. The solar panel is etched in the etching tank 11, and the etching liquid is circulated and filtered in the etching liquid filter chamber 12 through the action of the etching liquid circulation treatment mechanism 2.

[0038] Specifically, see Figure 1 and Figure 2 The present embodiment provides an etching device for producing solar cells, which further includes a belt conveyor 15. The belt conveyor 15 is arranged outside the etching box 1. A plurality of groups of push plates 16 are evenly arranged on the belt of the belt conveyor 15. The interval between two adjacent groups of push plates 16 is not less than the size of the etching basket 5. When the belt conveyor 15 drives the push plates 16 to rotate, the installation and disassembly of the etching basket 5 can be completed under the action of the push plates 16, making the installation and disassembly of the etching basket 5 more convenient, time-saving and labor-saving. In addition, the etching basket 5 can be transported under the action of the belt conveyor 15, thereby improving the overall working efficiency of the device.

[0039] Specifically, see Figure 1 and Figure 2 As a preferred embodiment, two groups of etching chambers are symmetrically arranged on both sides of the driving chamber, so that two groups of etching grooves 11 can be used to etch the solar cell at the same time.

[0040] Specifically, see Figure 4 and Figure 5In this embodiment, the etching liquid circulation treatment mechanism 2 includes a bracket 17, a circulation pump 18 and a filter cartridge 19. The bracket 17 is fixedly arranged on the inner bottom wall of the etching liquid circulation driving chamber 7. The circulation pump 18 is fixedly arranged on the bracket 17. The circulation pump 18 is provided with a liquid inlet pipe 20 and a liquid outlet pipe 21. The liquid inlet pipe 20 is connected to the side wall of the etching liquid filter chamber 12. The liquid outlet pipe 21 is connected to the position conversion mechanism 3. The filter cartridge 19 is fixedly arranged on the bottom wall of the etching liquid filter chamber 12, and the lower end of the filter cartridge 19 is provided with a waste outlet 22. 2 is provided with a switch valve, and the dirt precipitation in the filter cartridge 19 can be discharged regularly by opening the switch valve. One end of the infusion pipe 14 is fixedly arranged in the filter cartridge 19, and the etching liquid can be sucked and circulated under the action of the circulation pump 18. Specifically, the etching liquid in the etching tank 11 enters the filter cartridge 19 along the infusion pipe 14, and is filtered under the action of the filter cartridge 19. The dirt precipitation remains in the filter cartridge 19. The etching liquid after filtration enters the etching liquid filter chamber 12 and is circulated and transported to the etching tank 11 along the outlet pipe 21.

[0041] Specifically, see Figure 4 In this embodiment, the filter cartridge 19 is composed of a cylindrical upper part and a funnel-shaped bottom. The cylindrical upper part is a mesh structure, and the funnel-shaped bottom is a solid plate. The etching liquid is filtered under the mesh structure of the cylindrical upper part, and the dirt is deposited at the bottom of the funnel. The switch valve can be opened regularly to discharge the dirt deposited at the bottom of the funnel.

[0042] Specifically, see Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the etching box 1 is also provided with a cleaning mechanism, which includes a protective shell 23, a suction pump 24 and a suction pipe 25. The protective shell 23 is fixedly arranged on the inner top wall of the etching liquid filter chamber 12, and a rotating motor 26 is fixedly arranged on the side wall of the protective shell 23. An active conical wheel 27 is fixedly arranged on the output shaft of the rotating motor 26. The suction pipe 25 penetrates and rotates on the bottom wall of the protective shell 23, and the lower end of the suction pipe 25 is rotatably located in the filter cartridge 19. A driven conical wheel 28 is fixedly arranged on the upper end of the suction pipe 25, and the driven conical wheel 28 is meshed with the active conical wheel 27. The suction pipe 25 is located in the filter cartridge 19. 9, a plurality of suction heads 29 are evenly arranged on the inner part, the suction heads 29 face the side wall of the filter cartridge 19, a collecting box 30 is fixedly installed on the side wall of the etching box 1, a suction pump 24 is fixedly arranged on the side wall of the etching box 1, an inlet pipe 31 and an outlet pipe 32 are connected to the suction pump 24, the inlet pipe 31 passes through the side wall of the etching box 1 and is connected to the suction pipe 25, and the outlet pipe 32 is connected to the collecting box 30. After the etching liquid in the etching liquid filter cavity 12 can be completely discharged under the action of the suction pump 24, the cylindrical upper mesh of the filter cartridge 19 is regularly sucked and cleaned by negative pressure suction to ensure that the mesh of the filter cartridge 19 is unobstructed.

[0043] Specifically, see Figure 1 and Figure 4 In this embodiment, the position conversion mechanism 3 includes a position conversion motor 33 and a rotating support shaft 34. The position conversion motor 33 is fixedly arranged on the support plate 6. A driving gear 35 is fixedly arranged on the output shaft of the position conversion motor 33. The rotating support shaft 34 is rotatably arranged on the top wall of the etching box 1. The rotating support shaft 34 is a hollow shaft. The liquid outlet pipe 21 is rotatably connected to the rotating support shaft 34, and the rotating support shaft 34 is communicated with the liquid outlet pipe 21. The synchronous adjustment mechanism 4 is fixedly arranged at the upper end of the rotating support shaft 34. A driven gear 36 is fixedly arranged on the rotating support shaft 34. The driven gear 36 is fixedly connected to the driving gear 35. Under the meshing action of the driving gear 35 and the driven gear 36, the rotating support shaft 34 can be driven to rotate, thereby driving the synchronous adjustment mechanism 4 to rotate, realizing the position conversion of the etching basket 5 compared with the etching groove 11 and the belt conveyor 15, thereby alternately realizing the etching and loading and unloading of solar cells in different groups of etching baskets 5.

[0044] Specifically, see Figure 1 , Figure 2 and Figure 6 In this embodiment, the synchronous adjustment mechanism 4 includes an adjustment plate 37, which is fixedly arranged at the upper end of the rotating support shaft 34, and an adjustment drive cavity is opened in the adjustment plate 37. An adjustment motor 38 is fixedly arranged on the adjustment plate 37, and a height adjustment component is rotatably arranged on the adjustment plate 37. The number of groups of the height adjustment components is the sum of the number of groups of the etching grooves 11 and the belt conveyor 15. One group of height adjustment components is connected to the output shaft of the adjustment motor 38, and two adjacent groups of height adjustment components are connected by a driving belt 39. Under the driving action of the adjustment motor 38 and the driving belt 39, multiple groups of height adjustment components Synchronous action, the etching basket 5 is detachably connected to the height adjustment component, a connecting pipe 40 is fixedly connected to the adjustment plate 37, the connecting pipe 40 is rotatably connected to the rotating support shaft 34, a circulation pipe 41 is connected between the connecting pipe 40 and the height adjustment component, the circulation pipe 41 is a deformable hose, so that it can be deformed in coordination with the lifting and lowering of the height adjustment component, and a solenoid valve is provided on the connecting pipe 40 of each group of height adjustment components, and the etching liquid circulates through the liquid outlet pipe 21, the inner channel of the rotating support shaft 34, the connecting pipe 40 and the circulation pipe 41, and the connection of the corresponding etching liquid circulation pipeline is controlled by each group of solenoid valves.

[0045] It is worth noting that in the present embodiment, four groups of height adjustment components are shown, and therefore the four groups of connecting pipes of the four groups of height adjustment components can be connected through five-way joints, thereby ensuring that each connecting pipe can be connected to the channel inside the rotating support shaft 34.

[0046] Specifically, see Figure 2 , Figure 6and Figure 7 In this embodiment, each height adjustment component includes two threaded rods 42 and nut cylinders 43. The upper ends of the threaded rods 42 are rotatably arranged in the adjustment drive cavity. A group of belt pulleys are fixedly arranged on a group of threaded rods 42 and the output shaft of the adjustment motor 38. A group of synchronous disks are fixedly arranged on the two threaded rods 42. A group of synchronous disks are fixedly arranged on one threaded rod 42 of two adjacent height adjustment components. A driving belt 39 is sleeved on the two corresponding groups of synchronous disks. Under the action of the driving belt 39, the threaded rods 42 of the multiple groups of height adjustment components rotate synchronously. The nut cylinder 43 is connected to the threaded rod 42 through a thread. A mounting plate 44 is fixedly arranged at the lower ends of the two groups of nut cylinders 43. A hollow spray plate 45 is fixedly arranged on the lower surface of the mounting plate 44. The spray plate 45 is located directly above the etching basket 5. A plurality of groups of spray heads 46 are evenly distributed on the lower surface of the spray plate 45. The circulation pipe 41 is connected to the spray plate 45. The etching liquid circulating along the circulation pipe 41 is sprayed on the solar cell contained in the etching basket 5 to realize etching processing.

[0047] Specifically, see Figure 7 and Figure 8 In this embodiment, a connecting mechanism is provided on the mounting plate 44, and the connecting mechanism includes a connecting plate 47, a fixing plate 48 and a positioning plate 49. Four groups of connecting plates 47 are fixedly provided at the four corners of the mounting plate 44. The lower surface of the connecting plate 47 is provided with an embedding slot 50. Four groups of embedding plates 51 are provided at the four corners of the upper surface of the etching basket 5. The embedding plates 51 are snap-fitted into the embedding slots 50. The embedding plates 51 are provided with positioning holes. A positioning pin 52 adapted to the positioning hole is fixedly provided on one side of the positioning plate 49. When the positioning pin 52 is embedded in the positioning hole, the positioning plate 49 is located on the outer side of the connecting plate 47. A fixing hole is provided through it, and the fixing plate 48 is fixed on the mounting plate 44. A fixing pin 53 is slidably provided on the fixing plate 48. The lower end of the fixing pin 53 is adapted to the fixing hole, and a limiting plate 54 is fixedly provided on the upper end of the fixing pin 53. The limiting plate 54 is located above the fixing plate 48. A baffle 55 is provided at the lower part of the fixing pin 53. A fixing spring 56 is sleeved on the fixing pin 53. The two ends of the fixing spring 56 are respectively connected to the fixing plate 48 and the baffle 55. Under the action of the fixing spring 56, the fixing pin 53 can be stably embedded in the fixing hole, thereby realizing convenient disassembly and connection between the etching basket 5 and the mounting plate 44.

[0048] Specifically, see Figure 7 and Fig. 9In this embodiment, a rolling groove 57 is provided above the embedding slot 50, and a plurality of groups of balls 58 are evenly arranged on the upper surface of the embedding plate 51. The embedding plate 51 is rolled in the rolling groove 57 by the balls 58. When the etching basket 5 is placed on the belt of the belt conveyor 15, and the positioning plate 49 and the positioning pin 52 are removed, as the belt conveyor 15 rotates in the forward direction, the etching basket 5 is exerted with a force away from the etching box 1 through the push plate 16. Under the cooperation of the balls 58, the embedding plate 51 of the etching basket 5 is conveniently removed from the embedding slot 50 of the mounting plate 44; or when the belt conveyor 15 rotates in the reverse direction, the embedding plate 51 of the etching basket 5 can be driven to be pushed into the embedding slot 50, thereby completing the automatic alignment installation between the etching basket 5 and the mounting plate 44.

[0049] The working principle of the etching device for producing solar cells provided in this embodiment is as follows:

[0050] (1) Inject etching liquid into the etching liquid filter chamber 12 through the liquid adding pipe 13, place the etching box 1 on the belt of the belt conveyor 15, and then place the solar cell to be etched in the etching box 1;

[0051] (2) First, the adjustment motor 38 is started to rotate forward. Under the action of the driving belt 39, the threaded rods 42 of the multiple sets of height adjustment components rotate forward synchronously. Each set of height adjustment components drives its own nut barrel 43 to rotate synchronously through two threaded rods 42. The synchronous rotation of the two nut barrels 43 drives the mounting plate 44 to descend.

[0052] After the installation plate 44 is lowered to the position, the etching basket 5 loaded with the solar cell to be etched is driven to move toward the etching box 1 through the push plate 16 as the belt of the belt conveyor 15 reverses, until the inserting plate 51 is inserted into the inserting slot 50, and the smoothness of the moving installation of the inserting plate 51 in the inserting slot 50 is improved under the cooperation of the ball 58;

[0053] (3) After the etching basket 5 is moved into position, the limit plate 54 is pulled upward, and the limit plate 54 drives the fixing pin 53 to move upward. At this time, the fixing spring 56 is compressed, and the positioning plate 49 is held to insert the positioning pin 52 into the positioning hole. The limit plate 54 is released, and the fixing pin 53 is driven downward by the action of the fixing spring 56. The free end of the fixing pin 53 is inserted into the fixing hole on the positioning plate 49, thereby realizing a convenient installation between the etching basket 5 and the mounting plate 44.

[0054] (4) After the installation is completed, the adjusting motor 38 is started to reverse, and under the action of the driving belt 39, the nut barrel 43 cooperates to drive the mounting plate 44 and the etching basket 5 to move upward;

[0055] (5) After the etching basket 5 is moved up to the position, the position conversion motor 33 is started, and the position conversion motor 33 drives the driving gear 35 to rotate. The driving gear 35 and the driven gear 36 are engaged to drive the rotating support shaft 34 to rotate. The rotating support shaft 34 drives each group of mounting plates 44 through the adjustment plate 37 to achieve position conversion. When the etching basket 5 with the solar cell to be etched is transferred to the top of the etching tank 11, the adjustment motor 38 is started again to rotate forward, and the etching basket 5 is moved down to the etching tank 11;

[0056] (6) Start the circulation pump 18. Under the action of the circulation pump 18, the etching liquid is transported from the etching liquid filter chamber 12 along the liquid inlet pipe 20, the liquid outlet pipe 21, the channel in the rotating support shaft 34, and the connecting pipe 40 in sequence. The solenoid valve on the connecting pipe 40 corresponding to the etching basket 5 in the etching tank 11 is correspondingly opened. The group of connecting pipes 40 and the corresponding circulation pipe 41 are connected, so that the corresponding spray head 46 sprays the etching liquid onto the solar cell through the spray plate 45, thereby realizing the spray etching of the solar cell. In addition, under the action of the circulation pump 18, the etching liquid flows back to the etching liquid filter chamber 12 along the liquid delivery pipe 14. After being filtered by the filter cartridge 19, the dirt is precipitated in the filter cartridge 19, and the etching liquid is sucked and circulated again by the circulation pump through the etching liquid filter chamber 12;

[0057] At regular intervals, the etching liquid or dirt deposits in the etching liquid filter chamber 12 can be discharged through the waste outlet, and the suction pump 24 is started to clean the mesh of the filter cartridge 19 by suction under the action of the suction head 29, the suction pipe 25, the inlet pipe 31 and the outlet pipe, so as to prevent some dirt deposits from adhering to the mesh wall of the filter cartridge 19;

[0058] (7) While etching the solar cell in the etching basket 5 in the etching tank 11, the etching basket 5 transferred to the upper side by the belt conveyor is installed or removed:

[0059] For installation steps, please refer to steps (2) and (3).

[0060] The specific steps for disassembling the etching basket 5 where the solar cell that has completed the etching process is located are as follows: first, pull the limit plate 54 upward, and the limit plate 54 drives the fixing pin 53 to move upward. At this time, the fixing spring 56 is compressed, and the positioning plate 49 is held to move the positioning pin 52 out of the positioning hole. At this time, the connection between the etching basket 5 and the mounting plate 44 is released, and then the belt conveyor 15 is started to rotate forward. The rotation of the belt conveyor 15 drives the push plate 16 to rotate, and the push plate 16 applies force to the etching basket 5 thereon, driving the etching basket 5 to move away from the etching box 1. With the cooperation of the ball 58, the inserting plate 51 of the etching basket 5 is smoothly moved out of the inserting slot 50 and transferred along with the belt conveyor 15.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An etching device for solar cell production, characterized in that: The etching box comprises an etching liquid circulation processing mechanism (1), an etching liquid circulation processing mechanism (2), a position conversion mechanism (3), a synchronous adjustment mechanism (4) and an etching basket (5), wherein the etching liquid circulation processing mechanism (2) is arranged in the etching box (1), a support plate (6) is arranged in the etching box (1), the position conversion mechanism (3) is fixedly arranged on the support plate (6), the etching liquid circulation processing mechanism (2) is connected to the position conversion mechanism (3), and the synchronous adjustment mechanism (4) is fixedly connected to the position conversion mechanism (3), and the etching basket (5) is connected to the synchronous adjustment mechanism (4) via a connecting mechanism; It also comprises a belt conveyor (15), the belt conveyor (15) being arranged outside the etching box (1), a plurality of groups of push plates (16) being arranged on the belt of the belt conveyor (15), and the etching basket (5) being configured to be disassembled and installed by pushing the matching connection mechanism through two adjacent groups of push plates (16); The etching box (1) is provided with a driving chamber and an etching chamber. The support plate (6) is fixedly arranged in the driving chamber. The support plate (6) divides the driving chamber into an etching liquid circulation driving chamber (7) and a position conversion driving chamber (8). The etching basket (5) is provided with a plurality of baffles (9). The etching chamber is provided with an upper opening. A baffle (10) is provided in the etching chamber. The baffle (10) divides the etching chamber into an etching groove (11) and an etching liquid filter chamber (12). A liquid adding pipe (13) is provided on the side wall of the etching liquid filter chamber (12). The etching groove (11) and the etching liquid filter chamber (12) are connected via a liquid infusion pipe (14). The etching liquid circulation treatment mechanism (2) is installed in the etching box (1).

2. The etching device for producing solar cells according to claim 1, characterized in that: The etching liquid circulation treatment mechanism (2) comprises a bracket (17), a circulation pump (18) and a filter cartridge (19); the bracket (17) is fixedly arranged on the inner bottom wall of the etching liquid circulation drive chamber (7); the circulation pump (18) is fixedly arranged on the bracket (17); a liquid inlet pipe (20) and a liquid outlet pipe (21) are provided on the circulation pump (18); the liquid inlet pipe (20) is connected to the side wall of the etching liquid filter chamber (12); the liquid outlet pipe (21) is connected to the position conversion mechanism (3); the filter cartridge (19) is fixedly arranged on the bottom wall of the etching liquid filter chamber (12); one end of the liquid delivery pipe (14) is fixedly arranged in the filter cartridge (19); and the bottom of the filter cartridge (19) is a funnel-shaped structure.

3. The etching device for producing solar cells according to claim 2, characterized in that: The etching box (1) is also provided with a cleaning mechanism, the cleaning mechanism comprising a protective shell (23), a suction pump (24) and a suction pipe (25), the protective shell (23) being fixedly arranged on the inner top wall of the etching liquid filter chamber (12), a rotating motor (26) being fixedly arranged on the side wall of the protective shell (23), an active conical wheel (27) being fixedly arranged on the output shaft of the rotating motor (26), the suction pipe (25) penetrating the bottom wall of the protective shell (23), the suction pipe (25) being rotatably located in the filter cartridge (19), the suction pipe (25) A driven conical wheel (28) is fixedly provided on the etching box (5), the driven conical wheel (28) meshing with the driving conical wheel (27), the suction pipe (25) is provided with a plurality of suction heads (29), a collecting box (30) is fixedly installed on the side wall of the etching box (1), the suction pump (24) is fixedly provided on the side wall of the etching box (1), an inlet pipe (31) and an outlet pipe (32) are connected to the suction pump (24), the inlet pipe (31) passes through the side of the etching box (1) and is connected to the suction pipe (25), and the outlet pipe (32) is connected to the collecting box (30).

4. The etching device for producing solar cells according to claim 2, characterized in that: The position conversion mechanism (3) comprises a position conversion motor (33) and a rotating support shaft (34); the position conversion motor (33) is fixedly arranged on a support plate (6); a driving gear (35) is fixedly arranged on an output shaft of the position conversion motor (33); the rotating support shaft (34) is rotatably arranged on a top wall of the etching box (1); the rotating support shaft (34) is a hollow shaft; the liquid outlet pipe (21) is rotatably connected to the rotating support shaft (34); the rotating support shaft (34) is in communication with the liquid outlet pipe (21); the synchronous adjustment mechanism (4) is fixedly arranged on an upper end of the rotating support shaft (34); a driven gear (36) is fixedly arranged on the rotating support shaft (34); and the driven gear (36) is fixedly connected to the driving gear (35).

5. The etching device for producing solar cells according to claim 4, characterized in that: The synchronous adjustment mechanism (4) comprises an adjustment plate (37), the adjustment plate (37) being fixedly arranged on the rotating support shaft (34), an adjustment drive cavity being provided in the adjustment plate (37), an adjustment motor (38) being fixedly arranged on the adjustment plate (37), a height adjustment assembly being rotatably arranged on the adjustment plate (37), the number of groups of the height adjustment assembly being the sum of the number of groups of the etching slots (11) and the belt conveyor (15), one group of the height adjustment assembly being connected to the output shaft of the adjustment motor (38), two adjacent groups of the height adjustment assembly being connected via a driving belt (39), the etching basket (5) being detachably connected to the height adjustment assembly, a connecting pipe (40) being fixedly connected to the adjustment plate (37), the connecting pipe (40) being rotatably connected to the rotating support shaft (34), a circulation pipe (41) being connected between the connecting pipe (40) and the height adjustment assembly, the circulation pipe (41) being a deformable hose, and a solenoid valve being arranged on the connecting pipe (40) of each group of the height adjustment assembly.

6. The etching device for producing solar cells according to claim 5, characterized in that: Each group of the height adjustment components comprises two threaded rods (42) and a nut barrel (43), the upper ends of the threaded rods (42) being rotatably disposed in the adjustment drive cavity, a group of belt pulleys being fixedly disposed on a group of the threaded rods (42) and the output shaft of the adjustment motor (38), a group of synchronous disks being fixedly disposed on the two threaded rods (42), a group of synchronous disks being fixedly disposed on a threaded rod (42) of two adjacent groups of height adjustment components, a driving belt (39) being sleeved on the two groups of synchronous disks corresponding to each other, the nut barrel (43) being connected to the threaded rods (42) by threads, a mounting plate (44) being fixedly disposed on the lower ends of the two groups of the nut barrels (43), a hollow spray plate (45) being fixedly disposed on the lower surface of the mounting plate (44), the spray plate (45) being located directly above the etching basket (5), a spray head (46) being disposed on the lower surface of the spray plate (45), and the circulation pipe (41) being connected to the spray plate (45).

7. The etching device for producing solar cells according to claim 6, characterized in that: The mounting plate (44) is provided with a connecting mechanism, the connecting mechanism comprising a connecting plate (47), a fixing plate (48) and a positioning plate (49); four groups of the connecting plate (47) are fixedly provided at the four corners of the mounting plate (44); an embedding slot (50) is provided on the lower surface of the connecting plate (47); four groups of embedding plates (51) are provided at the four corners of the upper surface of the etching basket (5); the embedding plates (51) are snap-fitted into the embedding slots (50); a positioning hole is provided on the embedding plates (51); a positioning pin (52) adapted to the positioning hole is fixedly provided on one side of the positioning plate (49); The positioning plate (49) is provided with a fixing hole, the fixing plate (48) is fixedly mounted on the mounting plate (44), a fixing pin (53) is slidably mounted on the fixing plate (48), the lower end of the fixing pin (53) is adapted to the fixing hole, a limiting plate (54) is fixedly mounted on the upper end of the fixing pin (53), the limiting plate (54) is located above the fixing plate (48), a baffle (55) is provided at the lower part of the fixing pin (53), a fixing spring (56) is sleeved on the fixing pin (53), and two ends of the fixing spring (56) are respectively connected to the fixing plate (48) and the baffle (55).

8. The etching device for producing solar cells according to claim 7, characterized in that: A rolling groove (57) is provided above the inserting slot (50), and a plurality of groups of balls (58) are evenly arranged on the upper surface of the inserting plate (51). The inserting plate (51) is rolled in the rolling groove (57) by the balls (58).

9. The etching device for producing solar cells according to claim 1, characterized in that: The etching chambers are symmetrically provided with two groups on both sides of the driving chamber.

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