A photovoltaic cell sheet texture groove

Abstract

The present invention discloses a texturing groove for photovoltaic cells, including a texturing groove arranged on a machine, the texturing groove is respectively provided with: a bottom plate, on which a groove is provided, and the groove is provided with a drainage protrusion; a partition, which divides the texturing groove into a texturing area and a mixing area, and the partition is provided with a central hole facing the drainage protrusion; a feeding component, which includes a storage tank arranged on the machine, and the storage tank transports isopropyl alcohol to the mixing area. Specifically, it relates to a texturing device for cells. When adding isopropyl alcohol to the texturing groove in the machine, the isopropyl alcohol in the storage tank is input into the mixing area. At this time, the liquid outlet pipe will continue to discharge liquid, and the sprayed liquid will generate a water flow to offset the mixed added isopropyl alcohol rising along the groove and the drainage protrusion. The mixed isopropyl alcohol will diffuse after being sprayed out from the central hole, thereby avoiding the situation where isopropyl alcohol is easily concentrated and assisting in eliminating bubbles in the cell.

Description

Technical Field

[0001] The invention relates to the technical field of solar cells, and in particular to a texturing groove for a photovoltaic cell sheet. Background Art

[0002] Texturing is the preliminary process for making photovoltaic cells from silicon wafers. Photovoltaic cells are etched with a solution to form multiple small pyramids, thereby increasing the refraction of light.

[0003] According to patent number CN114927443A, publication (announcement) date: 2022-08-19, a texturing device and texturing method are disclosed, wherein the texturing device includes a texturing groove; a flower basket is arranged in the texturing groove, the flower basket includes a flower basket rod and a plurality of flower basket teeth, the plurality of flower basket teeth are arranged on the flower basket rod at intervals, and a placement space is formed between two adjacent flower basket teeth, the width of the middle part of the longitudinal section of the flower basket tooth is greater than the width at both ends, and the longitudinal section is parallel to the arrangement direction of the plurality of flower basket teeth on the flower basket rod. The texturing method uses the above-mentioned texturing device to texturing silicon wafers, and the texturing method includes: filling the texturing liquid in the texturing groove and placing the flower basket, placing the silicon wafer in the placement space of the flower basket, and making the texturing liquid completely submerge the silicon wafer. The texturing device and texturing method can significantly reduce the proportion of flower basket tooth marks on heterojunction solar cells, and improve the battery efficiency and average output.

[0004] In the prior art including the above-mentioned patent, a plurality of small pyramids are etched out by solution during the texturing process, but bubbles are generated during the etching process. In order to avoid bubble attachment and remove the bubbles, isopropyl alcohol (IPA) is added to the bottom of the solution as a surfactant to eliminate the bubbles. However, when adding the isopropyl alcohol, the isopropyl alcohol is transported to the bottom of the texturing tank by a manual handheld pipe, which makes it difficult for the isopropyl alcohol to merge with the solution and causes the isopropyl alcohol to float up and volatilize, making it difficult to eliminate the bubbles at the edge of the silicon wafer. Summary of the invention

[0005] The object of the present invention is to provide a photovoltaic cell texturing tank, aiming to solve the problem that when isopropyl alcohol is added, the isopropyl alcohol is easy to float and volatilize in a concentrated manner, thus affecting the defoaming of the silicon slice at the edge.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photovoltaic cell sheet texturing tank, comprising a texturing tank arranged on a machine platform, wherein the texturing tank is respectively provided with:

[0007] A bottom plate, on which a groove is formed, and a drainage protrusion is provided on the groove;

[0008] A partition plate, which divides the texturing tank into a texturing area and a mixing area, and the partition plate is provided with a central hole facing the drainage protrusion;

[0009] A feeding assembly, comprising a storage tank disposed on the machine platform, wherein the storage tank delivers isopropanol to the mixing zone;

[0010] The circulation mechanism comprises a liquid outlet pipe symmetrically arranged on the texturing tank, wherein the liquid outlet pipe infuses liquid toward the drainage protrusion to generate a water flow toward the central hole.

[0011] Preferably, the feeding assembly further comprises a water storage portion disposed on the storage tank, the water storage portion is fixedly connected with a folding portion, and the water storage portion is fixedly connected with the drainage protrusion.

[0012] Preferably, it also includes a liquid return mechanism symmetrically arranged on the texturing tank, the liquid return mechanism includes an upper shield plate rotating along the texturing tank, a liquid extraction pipe fixedly connected to the liquid outlet pipe is arranged on the upper shield plate, and the liquid extraction pipe sucks the upper solution of the texturing tank as the upper shield plate flips.

[0013] Preferably, a through groove is provided on the upper shield plate, and the liquid extraction pipe is fixedly connected to the through groove.

[0014] Preferably, a guide cover coaxially arranged with the drainage protrusion is provided on the groove, and a frame cover is symmetrically provided on the guide cover, and the frame cover corresponds to the liquid outlet pipe one by one.

[0015] Preferably, the partition is provided with perforations in a linear array, and the texturing groove is provided with heating strips in a linear array, and the perforations correspond to the heating strips one by one.

[0016] Preferably, the upper shield is provided with an inclined conical bin fixedly connected to the through groove, and the liquid level decreases with suction and the liquid surface area increases along the inclined conical bin.

[0017] Preferably, a dispersion mechanism is provided on the partition, and the dispersion mechanism includes a first connecting plate movably provided on the partition, and second connecting plates are rotatably connected to both ends of the first connecting plate, and the water flow diffuses along the first connecting plate and the second connecting plate.

[0018] Preferably, a diffuser port is provided on the first connecting plate, and the first connecting plate and the second connecting plate are assembled at the following two stations:

[0019] First station: the liquid outlet pipe discharges water slowly, the diffuser port is open, and the second connecting plate is turned over and tilted toward the texturing area;

[0020] Second station: the liquid outlet pipe discharges water quickly, the diffuser port is closed, and the second connecting plate is turned over and tilted toward the mixing zone.

[0021] Preferably, an elastic strip is provided between the second connecting plate and the partition plate, a sealing plate is rotatably connected to the first connecting plate, and a connecting strip is provided between the sealing plate and the second connecting plate.

[0022] In the above technical scheme, a photovoltaic cell texturing trough provided by the present invention has the following beneficial effects: when adding isopropyl alcohol to the texturing trough in the machine, the isopropyl alcohol in the storage tank is input into the mixing area, and the liquid outlet pipe will continue to discharge liquid at this time, and the sprayed liquid will generate a water flow to offset the mixed and added isopropyl alcohol that rises along the grooves and drainage protrusions. The mixed isopropyl alcohol will diffuse after being sprayed out from the center hole, thereby avoiding the situation where isopropyl alcohol is easily concentrated and assisting in eliminating bubbles in the cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a texturing tank provided in an embodiment of the present invention;

[0026] Figure 3 An explosion schematic diagram of a texturing tank provided in an embodiment of the present invention;

[0027] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0028] Figure 5 A schematic diagram of the internal structure of a texturing tank provided in an embodiment of the present invention;

[0029] Figure 6 An exploded schematic diagram of the internal structure of a texturing tank provided in an embodiment of the present invention;

[0030] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0031] Figure 8 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0032] Fig. 9 for Figure 8 The enlarged schematic diagram at C in the middle;

[0033] Fig.10 for Figure 8 The enlarged schematic diagram at D in the middle;

[0034] Fig.11 A schematic diagram of liquid flow provided in an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Machine; 10. Partition; 101. Center hole; 102. Perforation; 11. Texturing groove; 111. Support bar; 12. Bottom plate; 121. Groove; 13. Drainage protrusion; 131. Liquid outlet; 14. Guide cover; 141. Frame cover; 15. Heating strip; 2. Circulation mechanism; 21. Liquid outlet pipe; 210. Narrow mouth; 211. Fixed chamber; 212. Paddle; 22. Liquid extraction pipe; 2 3. Fixed frame; 231. Rotating boss; 3. Liquid return mechanism; 31. Upper shield plate; 311. Through slot; 312. Inclined cone bin; 4. Feeding assembly; 41. Storage tank; 42. Water storage part; 43. Push rod; 431. Folding part; 5. Dispersion mechanism; 51. First connecting plate; 511. Dispersion port; 52. Second connecting plate; 521. Elastic strip; 53. Sealing plate; 531. Connecting strip. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] like Figure 1-11 As shown, a photovoltaic cell texturing tank includes a texturing tank 11 arranged on a machine 1, and the texturing tank 11 is respectively provided with:

[0039] The bottom plate 12 is provided with a groove 121, and the groove 121 is provided with a drainage protrusion 13;

[0040] A partition 10, which divides the texturing tank 11 into a texturing area and a mixing area, and a central hole 101 facing the drainage protrusion 13 is opened on the partition 10;

[0041] A feeding assembly 4, comprising a storage tank 41 disposed on the machine platform 1, the storage tank 41 conveys isopropanol to the mixing zone;

[0042] The circulation mechanism 2 includes a liquid outlet pipe 21 symmetrically arranged on the texturing tank 11 , and the liquid outlet pipe 21 infuses liquid toward the drainage protrusion 13 to generate a water flow toward the central hole 101 .

[0043] Specifically, a narrow opening 210 is provided on the liquid outlet pipe 21, and the narrow opening 210 increases the water flow speed. The bottom plate 12 is provided at the bottom of the texturing tank 11, and the groove 121 is arc-shaped. The drainage protrusion 13 is provided at the center of the arc. The partition 10 is provided in the texturing tank 11, and the partition 10 divides the texturing tank 11 into an upper half area and a lower half area. The texturing area is the upper half area, and the mixing area is the lower half area. A liquid outlet 131 is provided on the drainage protrusion 13, and the storage tank 41 is fixedly connected to the liquid outlet 131 through a hose. A fixed bin 211 is provided on the liquid outlet pipe 21, and a paddle 212 is provided on the fixed bin 211. The paddle 212 is connected to the motor through a coupling. When the texturing tank 11 is filled with solution for texturing, the paddle The rotation of 212 drives the liquid outlet pipe 21 to spray the solution, and the two liquids will flow along the arc-shaped groove 121 to the drainage protrusion 13, and rise with the guidance of the drainage protrusion 13, and the mixed water flow will enter the texturing area along the center hole 101. When the liquid rises with the guidance of the drainage protrusion 13, the isopropyl alcohol in the storage tank 41 is transported to the mixing area, so that the isopropyl alcohol flows out along the liquid outlet 131, so that the isopropyl alcohol and the liquid are mixed as the liquid rises, and the mixed solution disperses the isopropyl alcohol, thereby avoiding the situation where the isopropyl alcohol is concentrated and floats too quickly and evaporates. At the same time, it is easier to evaporate when it naturally floats to the flower basket, and the mixed impact on the flower basket makes it easier to diffuse, so as to eliminate the bubbles retained on the side of the flower basket.

[0044] Machine 1 is a single crystal texturing machine.

[0045] In the above technical solution, when adding isopropyl alcohol to the texturing tank 11 in the machine 1, the isopropyl alcohol in the storage tank 41 is input into the mixing area. At this time, the liquid outlet pipe 21 will continue to discharge liquid, and the sprayed liquid will generate a water flow to offset the mixed and added isopropyl alcohol that rises along the groove 121 and the drainage protrusion 13. The mixed isopropyl alcohol will diffuse after being sprayed out from the center hole 101, thereby avoiding the situation where isopropyl alcohol is easily concentrated and assisting in eliminating bubbles in the battery cell.

[0046] As an embodiment provided by the present invention, the feeding assembly 4 further includes a water storage portion 42 disposed on the storage tank 41 , the water storage portion 42 is fixedly connected with a folding portion 431 , and the water storage portion 42 is fixedly connected with the drainage protrusion 13 .

[0047] Specifically, connecting pipes are provided at both ends of the water storage part 42, and the two sections of the connecting pipes are respectively inserted into the storage tank 41 and the drainage protrusion 13, and a push rod 43 is provided on the folding part 431, and the push rod 43 extends to the outside of the machine 1. A one-way valve is provided on the two sections of the connecting pipes, so that when the push rod 43 is manually pushed and pulled back and forth, the folding part 431 is contracted or extended, thereby sucking the isopropyl alcohol in the storage tank 41 and transporting it to the mixing area for mixing.

[0048] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution, and the two liquids will flow along the arc-shaped groove 121 to the drainage protrusion 13, and rise with the guidance of the drainage protrusion 13, and the mixed water flow enters the texturing area along the center hole 101. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to make the folding part 431 contract or extend, thereby transporting the isopropyl alcohol in the storage tank 41 to the mixing area, so that the isopropyl alcohol flows out along the liquid outlet 131, so that the isopropyl alcohol and the liquid are mixed as the liquid rises.

[0049] As an embodiment provided by the present invention, it also includes a liquid return mechanism 3 symmetrically arranged on the texturing tank 11, the liquid return mechanism 3 includes an upper shield plate 31 rotating along the texturing tank 11, and a liquid extraction pipe 22 fixedly connected to the liquid outlet pipe 21 is arranged on the upper shield plate 31. The liquid extraction pipe 22 sucks the upper solution of the texturing tank 11 as the upper shield plate 31 flips.

[0050] Specifically, a fixing frame 23 is provided on the outer wall of the texturing tank 11, the liquid outlet pipe 21 is provided on the fixing frame 23, the upper shield plate 31 is rotatably connected to the rotating boss 231 on the fixing frame 23, and a supporting bar 111 for supporting a flower basket is provided in the texturing tank 11. When in use, after the flower basket is placed, the two upper shield plates 31 are rotated to cover the liquid surface of the texturing tank 11, and the liquid is sucked through the liquid extraction pipe 22, and the sucked liquid is input into the mixing zone along the liquid outlet pipe 21. When isopropyl alcohol is added, the isopropyl alcohol that is not repeatedly mixed and floats up in time is guided by the upper shield plate 31 and then sucked, so as to circulate the isopropyl alcohol and reduce the volatilization of isopropyl alcohol, thereby extending the defoaming time and reducing the amount of isopropyl alcohol to be replenished.

[0051] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution, and the two liquids will flow along the arc-shaped groove 121 to the drainage protrusion 13, and rise with the guidance of the drainage protrusion 13, and let the mixed water flow enter the texturing area along the center hole 101. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to make the folding part 431 contract or extend, so as to transport the isopropyl alcohol in the storage tank 41 to the mixing area, so that the isopropyl alcohol flows out along the liquid outlet 131, so that the isopropyl alcohol and the liquid are mixed as the liquid rises, and then the upper shield plate 31 is turned over to cover the liquid surface of the texturing tank 11, and suction is carried out through the liquid extraction pipe 22 to circulate the isopropyl alcohol.

[0052] As an embodiment provided by the present invention, a through groove 311 is opened on the upper shield plate 31 , and the liquid extraction pipe 22 is fixedly connected to the through groove 311 .

[0053] Specifically, a through groove 311 is opened on the upper baffle plate 31. During the texturing process, bubbles will be generated on the silicon wafer. After the defoaming agent (isopropyl alcohol) is added, the bubbles are not easy to be retained and will float up. When floating up, they will first contact the air along the through groove 311 of the upper baffle plate 31, thereby releasing the generated bubbles and preventing the bubbles from entering the mixing area with the circulating liquid.

[0054] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution, and the two streams of liquid will flow along the arc-shaped groove 121 to the drainage protrusion 13, and rise with the guidance of the drainage protrusion 13, and let the mixed water flow enter the texturing area along the center hole 101. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to shrink or extend the folding part 431, so that the isopropyl alcohol in the storage tank 41 is transported to the mixing area, so that the isopropyl alcohol flows out along the liquid outlet 131, so that the isopropyl alcohol and the liquid are mixed as the liquid rises, and then the upper shield plate 31 is turned over to cover the liquid surface of the texturing tank 11, and suction is performed through the liquid extraction pipe 22 to circulate the isopropyl alcohol, and the bubbles generated during the texturing process will burst along the through groove 311 as they float up.

[0055] As an embodiment provided by the present invention, Fig.11 For reference of the liquid flow direction, a guide cover 14 coaxially arranged with the drainage protrusion 13 is provided on the groove 121, and a frame cover 141 is symmetrically provided on the guide cover 14, and the frame cover 141 corresponds to the liquid outlet pipe 21 one by one;

[0056] The partition plate 10 is provided with through holes 102 in a linear array, and the texturing groove 11 is provided with heating strips 15 in a linear array, and the through holes 102 and the heating strips 15 correspond to each other one by one.

[0057] Specifically, when liquid is discharged from the liquid outlet pipe 21, the water flow will enter along the frame cover 141, and be guided by the drainage protrusion 13 and the guide cover 14 at the same time to increase the guidance of the water column. When entering the large-sized center hole 101 from a small-sized guide cover 14, the small-sized liquid column will suck the liquid near the mixing zone to increase the amount of water circulating in the two areas. When the liquid in the mixing zone is lost with the rising liquid column, the liquid in the texturing tank 11 is sucked through the perforation 102 to flush the heating strip 15. In the solution heating stage, a large circulation can be carried out through the liquid outlet pipe 21, and a small circulation can be formed in the mixing zone and the texturing zone through the perforation 102, so that the heating process is more uniform.

[0058] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution. The two streams of liquid will flow along the arc-shaped groove 121 toward the drainage protrusion 13, and rise along the guidance of the drainage protrusion 13 and the guide cover 14 at the same time, and the mixed water flow will enter the texturing area along the center hole 101. At this time, the liquid column sucks the liquid near the mixing area to increase the amount of water circulating in the two areas. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to shrink or extend the folding part 431, thereby transporting the isopropyl alcohol in the storage tank 41 to the mixing area, so that the isopropyl alcohol flows out along the liquid outlet 131, so that the isopropyl alcohol and the liquid are mixed as the liquid rises, and then the upper shield plate 31 is turned over to cover the liquid surface of the texturing tank 11, and suction is performed through the liquid extraction pipe 22 to circulate the isopropyl alcohol, and the bubbles generated during the texturing process will burst along the through groove 311 as they float up.

[0059] As an embodiment provided by the present invention, an inclined cone bin 312 fixedly connected to the through groove 311 is provided on the upper shield plate 31 , and the liquid surface area increases along the inclined cone bin 312 as the liquid surface drops with the suction.

[0060] Specifically, the liquid extraction pipe 22 is arranged at the large end of the inclined cone bin 312, and the motor driving the paddle 212 has two gears, fast rotation and slow rotation, to control the liquid discharge speed of the liquid outlet pipe 21 and the liquid extraction speed of the liquid extraction pipe 22. Fig. 9 For reference, it is in an inclined state with a small top and a large bottom. When rotating slowly, the liquid extraction tube 22 extracts liquid slowly, and the liquid level is maintained on the through groove 311 for defoaming. When the liquid extraction tube 22 extracts liquid quickly, the liquid upwelling from the wool making area and the liquid between the two upper shields 31 will not be filled in time, and the liquid level of the double-stacked inclined cone bin 312 will drop briefly, thereby increasing the area of ​​the liquid surface to increase the defoaming ability, so as to avoid the situation where bubbles are sucked in when the liquid is suddenly extracted during acceleration.

[0061] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution, and the two liquids flow toward the drainage protrusion 13 along the arc-shaped groove 121, and rise along the drainage protrusion 13 and the guide cover 14, and the mixed water flows into the texturing area along the central hole 101. At this time, the liquid column sucks the liquid near the mixing area to increase the amount of water circulating in the two areas. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to shrink or extend the folding part 431, so that the isopropyl alcohol in the storage tank 41 is moved to the mixing area. The isopropyl alcohol is transported so that it flows out along the liquid outlet 131, thereby mixing the isopropyl alcohol and the liquid as the liquid rises, and then the upper shield plate 31 is turned over to cover the liquid surface of the texturing tank 11, and is sucked through the liquid extraction pipe 22 to circulate the isopropyl alcohol. The bubbles generated in the texturing process will burst along the through groove 311 as they float upward. When the liquid circulation speed needs to be accelerated in the post-texturing stage, the motor power is increased to accelerate the liquid extraction and discharge speed. At this time, the liquid level of the double-stacked inclined cone bin 312 will drop briefly, thereby increasing the area of ​​the liquid surface to increase the defoaming ability.

[0062] As the best embodiment provided by the present invention, a dispersion mechanism 5 is provided on the partition 10, and the dispersion mechanism 5 includes a first connecting plate 51 movably provided on the partition 10, and the two ends of the first connecting plate 51 are rotatably connected to the second connecting plate 52, and the water flow diffuses along the first connecting plate 51 and the second connecting plate 52;

[0063] The first connecting plate 51 is provided with a diffuser port 511. The first connecting plate 51 and the second connecting plate 52 are assembled at the following two stations:

[0064] First station: the liquid outlet pipe 21 slowly discharges water, the diffuser port 511 is opened, and the second connecting plate 52 turns over and tilts toward the texturing area;

[0065] Second station: the liquid outlet pipe 21 quickly discharges water, the diffuser port 511 is closed, and the second connecting plate 52 is turned over and tilted toward the mixing zone.

[0066] Specifically, after the guide hood 14 slowly discharges liquid toward the center hole 101, the liquid column (water flow) will impact the first connecting plate 51. At this time, the first connecting plate 51 and the second connecting plate 52 are in the first position, and the diffuser port 511 is open to discharge water. At the same time, the second connecting plate 52 is flipped and tilted toward the texturing area to guide the liquid to diffuse toward the flower basket on the side to increase the diffusion surface of the water flow. After the guide hood 14 accelerates the liquid discharge toward the center hole 101, the first connecting plate 51 will move closer to the flower basket. At this time, the first connecting plate 51 and the second connecting plate 52 are in the second position, the diffuser port 511 is closed, and the second connecting plate 52 is flipped and tilted toward the mixing area. At this time, the first connecting plate 51 and the second connecting plate 52 will form a concave shape facing the mixing area to avoid excessively fast liquid flow from impacting the flower basket and maintain the uniform size of the triangle during the etching process.

[0067] During the texturing process, the paddle 212 rotates to drive the liquid outlet pipe 21 to spray the solution. The two streams of liquid will flow along the arc-shaped groove 121 to the drainage protrusion 13, and rise along the drainage protrusion 13 and the guide cover 14 at the same time, and the mixed water flow enters the texturing area along the center hole 101. At this time, the liquid column sucks the liquid near the mixing area to increase the amount of water circulating in the two areas. At the same time, the first connecting plate 51 and the second connecting plate 52 are in the first position, and the diffuser 511 is open to discharge water. At the same time, the second connecting plate 52 is turned over and tilted toward the texturing area to guide the liquid to diffuse toward the side flower basket. When the liquid rises with the guidance of the drainage protrusion 13, the push rod 43 is manually pushed and pulled back and forth to cause the folding portion 431 to contract or extend, thereby transporting the isopropyl alcohol in the storage tank 41 to the mixing area, so that the isopropyl alcohol can flow along the liquid outlet 131. Flow out, so that the isopropyl alcohol and the liquid are mixed as the liquid rises, and then the upper shield plate 31 is flipped over to cover the liquid surface of the texturing tank 11, and suction is performed through the liquid extraction pipe 22 to circulate the isopropyl alcohol, and the bubbles generated in the texturing process will burst along the through groove 311 as they float up. When it is necessary to accelerate the liquid circulation speed in the post-texturing stage, the motor power is increased to accelerate the liquid extraction and discharge speed. At this time, the liquid level of the double-stacked inclined cone bin 312 will drop briefly, thereby increasing the area of ​​the liquid surface to increase the defoaming ability. At the same time, the first connecting plate 51 and the second connecting plate 52 are in the second station, the diffuser 511 is closed, and the second connecting plate 52 is flipped over and tilted toward the mixing zone. At this time, the first connecting plate 51 and the second connecting plate 52 will form a concave shape facing the mixing zone to avoid the impact of excessively fast liquid flow on the flower basket.

[0068] Furthermore, an elastic strip 521 is provided between the second connecting plate 52 and the partition 10, and the elastic strip 521 is used to pull the second connecting plate 52. A torsion spring is provided between the second connecting plate 52 and the first connecting plate 51, so that a certain elasticity and a rotational driving force are provided between the second connecting plate 52 and the first connecting plate 51, so as to keep the second connecting plate 52 in an inclined state when the water flow impacts. A blocking plate 53 is rotatably connected to the first connecting plate 51, and a connecting strip 521 is provided between the blocking plate 53 and the second connecting plate 52. 31. When the water flow is slow, as the second connecting plate 52 tilts toward the wool making area, the sealing plate 53 is pulled by the connecting strip 531 to open the diffuser port 511. When the water flow is fast, the torsion spring between the second connecting plate 52 and the first connecting plate 51 is pushed by the water flow and rotates, so that the first connecting plate 51 moves toward the wool making area and the second connecting plate 52 flips toward the mixing area. At this time, the connecting strip 531 will push the sealing plate 53 to fit together with the flipping to block the diffuser port 511, thereby realizing the switching of the workstations.

[0069] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic cell sheet texturing tank, comprising a texturing tank (11) arranged on a machine platform (1), characterized in that: The texturing tank (11) is respectively provided with: A bottom plate (12) having a groove (121) formed thereon, wherein a drainage protrusion (13) is provided on the groove (121); A partition (10) which divides the texturing groove (11) into a texturing area and a mixing area, and the partition (10) is provided with a central hole (101) facing the drainage protrusion (13); A feeding assembly (4), comprising a storage tank (41) arranged on the machine platform (1), wherein the storage tank (41) transports isopropanol to the mixing zone; A circulation mechanism (2), comprising a liquid outlet pipe (21) symmetrically arranged on the texturing tank (11), wherein the liquid outlet pipe (21) infuses liquid toward the drainage protrusion (13) to generate a water flow toward the central hole (101); The feeding assembly (4) further comprises a water storage portion (42) arranged on the material storage tank (41), a folding portion (431) being fixedly connected to the water storage portion (42), and the water storage portion (42) is fixedly connected to the drainage protrusion (13); It also includes a liquid return mechanism (3) symmetrically arranged on the texturing tank (11), the liquid return mechanism (3) includes an upper shielding plate (31) rotating along the texturing tank (11), the upper shielding plate (31) is provided with a liquid extraction pipe (22) fixedly connected to the liquid outlet pipe (21), and the liquid extraction pipe (22) is turned along with the upper shielding plate (31) to suck the upper layer solution of the texturing tank (11); The upper shield plate (31) is provided with a through groove (311), and the liquid extraction pipe (22) is fixedly connected to the through groove (311).

2. A photovoltaic cell texturing groove according to claim 1, characterized in that: The groove (121) is provided with a guide cover (14) coaxially arranged with the drainage protrusion (13), and the guide cover (14) is symmetrically provided with a frame cover (141), and the frame cover (141) corresponds one-to-one with the liquid outlet pipe (21).

3. A photovoltaic cell texturing groove according to claim 1, characterized in that: The partition plate (10) is provided with perforations (102) in a linear array, and the texturing groove (11) is provided with heating strips (15) in a linear array, and the perforations (102) and the heating strips (15) correspond one to one.

4. A photovoltaic cell texturing groove according to claim 1, characterized in that: The upper shield plate (31) is provided with an inclined conical bin (312) fixedly connected to the through groove (311); the liquid surface decreases with suction, and the liquid surface area increases along the inclined conical bin (312).

5. A photovoltaic cell texturing groove according to claim 4, characterized in that: The partition (10) is provided with a dispersion mechanism (5), the dispersion mechanism (5) comprising a first connecting plate (51) movably arranged on the partition (10), the first connecting plate (51) having two ends rotatably connected to second connecting plates (52), and the water flow is diffused along the first connecting plate (51) and the second connecting plate (52).

6. A photovoltaic cell texturing groove according to claim 5, characterized in that: The first connecting plate (51) is provided with a diffuser port (511), and the first connecting plate (51) and the second connecting plate (52) are assembled at the following two stations: First workstation: the liquid outlet pipe (21) discharges water at a slow speed, the diffuser port (511) is opened, and the second connecting plate (52) is turned over and tilted toward the texturing area; Second workstation: the liquid outlet pipe (21) quickly discharges water, the diffuser port (511) is closed, and the second connecting plate (52) is turned over and tilted toward the mixing zone.

7. A photovoltaic cell texturing groove according to claim 6, characterized in that: An elastic strip (521) is provided between the second connecting plate (52) and the partition plate (10), a sealing plate (53) is rotatably connected to the first connecting plate (51), and a connecting strip (531) is provided between the sealing plate (53) and the second connecting plate (52).

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