Texturing equipment

Abstract

The utility model discloses a texturing device which comprises a texturing groove, a plurality of circulating grooves located outside the texturing groove and communicated with the texturing groove, and a circulating assembly, and the circulating grooves comprise a first circulating groove located outside the side wall of the texturing groove and a second circulating groove located outside the bottom wall of the texturing groove. And the first circulating groove and the second circulating groove are communicated with the texturing groove through a circulating assembly. According to the utility model, liquid circulation in the texturing groove can be accelerated, a dead angle area where a solution cannot circularly flow is reduced, and liquid circulation is more uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing, and in particular relates to a texturing device. Background Art

[0002] At present, the silicon wafers of industrialized mid-crystalline silicon solar cells are basically made of monocrystalline silicon or polycrystalline silicon. The first process of preparing solar cells from silicon wafers is the texturing process. The uniformity and reflectivity of the texture surface directly affect the photoelectric conversion efficiency of the cell.

[0003] For the texturing equipment, the method adopted in the prior art is to add a circulation pipeline to the texturing tank, and use a circulation pump to circulate the static solution in the texturing tank for a certain period of time, so as to ensure its uniformity. Since a circulation pipe is provided at the bottom of the traditional texturing tank, the circulation pipe is connected to a circulation pump, and the circulation pump is used to circulate the liquid in the circulation tank. Since the liquid outlet of the circulation pipe is arranged on the side, the solution flows in an inclined upward direction after coming out of the liquid outlet until it collides with the side wall of the circulation tank. When the solution collides with the side wall, due to the influence of the collision force, the solution will change the direction of movement, and the solution will reverse direction and then flow upward. In the process of continuous circulation of the solution, dead corners where the solution cannot circulate are likely to appear inside the texturing tank, and the liquid in the texturing tank cannot be evenly distributed.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a texturing device, which can speed up the circulation of liquid in a texturing tank, reduce the dead angle area where the solution cannot circulate, and make the liquid circulation more uniform.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A texturing device comprises a texturing tank, a plurality of circulation tanks located outside the texturing tank and connected to the texturing tank, and a circulation component, wherein the circulation tank comprises a first circulation tank located outside the side wall of the texturing tank and a second circulation tank located outside the bottom wall of the texturing tank, and the first circulation tank and the second circulation tank are connected to the texturing tank through the circulation component.

[0008] In one or more embodiments of the utility model, the circulation tank is provided with a liquid inlet and a liquid outlet, the texturing tank is provided with a liquid discharge port connected to the liquid outlet, and the liquid inlet and the liquid discharge port are connected through a circulation component.

[0009] In one or more embodiments of the present invention, the first circulation trough includes a first trough body and a first cover plate covered on the first trough body, the first trough body is provided with a first liquid inlet, and the first cover plate is provided with a first liquid outlet; the second circulation trough includes a second trough body and a second cover plate covered on the second trough body, the second trough body is provided with a second liquid inlet, and the second cover plate is provided with a second liquid outlet.

[0010] In one or more embodiments of the present invention, the first cover plate is arranged flush with the side wall of the texturing groove; and / or,

[0011] The second cover plate is arranged flush with the bottom wall of the texturing groove.

[0012] In one or more embodiments of the present invention, the circulation tank is provided with a plurality of liquid outlets distributed in an array.

[0013] In one or more embodiments of the present invention, the texturing tank includes a main tank and a sub-tank arranged on the side wall of the main tank, the circulation tank is arranged on the main tank, and the drainage port is arranged on the sub-tank.

[0014] In one or more embodiments of the present invention, the height of the auxiliary groove is greater than or equal to the height of the main groove.

[0015] In one or more embodiments of the present invention, a heating device and / or a bubbling device is provided on the bottom wall of the main tank.

[0016] In one or more embodiments of the present invention, a plurality of first circulation grooves are arranged at intervals along the width direction of the first circulation groove; and / or,

[0017] A plurality of the second circulation grooves are arranged at intervals along a width direction of the second circulation groove.

[0018] In one or more embodiments of the present invention, the circulation component includes a circulation pump, a buffer barrel, a first circulation pipeline connecting the velvet making tank and the buffer barrel, a second circulation pipeline connecting the circulation tank and the circulation pump, and a third circulation pipeline connecting the circulation pump and the buffer barrel.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The texturing device of the utility model can realize liquid circulation in the horizontal direction through the first circulation groove on the side wall of the texturing groove, and realize liquid circulation in the vertical direction through the second circulation groove on the bottom wall of the texturing groove, so as to accelerate the liquid circulation in the texturing groove, reduce the dead angle area where the solution cannot circulate, and make the liquid circulation more uniform;

[0021] The utility model arranges the circulation groove outside the texturing groove, does not occupy the space in the texturing groove, increases the use space of the texturing groove, and improves the efficiency of the texturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a texturing device in a specific embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the main structure of the texturing tank and the circulation tank in a specific embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the top view of the texturing tank and the circulation tank in a specific embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a texturing tank and a circulation tank in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.

[0031] Reference Figure 1As shown, the texturing equipment in a specific embodiment of the utility model includes a texturing tank 1, a plurality of circulation tanks 2 located outside the texturing tank 1 and connected with the texturing tank 1, and a circulation component 3. The circulation tank 2 includes a first circulation tank 21 located outside the side wall of the texturing tank 1 and a second circulation tank 22 located outside the bottom wall of the texturing tank 1. The first circulation tank 21 and the second circulation tank 22 are connected with the texturing tank 1 through the circulation component 3.

[0032] When a new type of texturing equipment is used to perform texturing on silicon wafers, horizontal liquid circulation can be achieved through the first circulation groove 21 on the side wall of the texturing groove 1, and vertical liquid circulation can be achieved through the second circulation groove 22 on the bottom wall of the texturing groove 1, thereby accelerating the liquid circulation in the texturing groove 1, reducing dead corners where the solution cannot circulate, and making the liquid circulation more uniform.

[0033] It should be noted that, compared with the traditional texturing equipment in which the circulation pipe is arranged inside the texturing tank 1, since the circulation tank 2 of the new texturing equipment is arranged outside the texturing tank 1, it does not occupy the space inside the texturing tank 1, thereby increasing the use space of the texturing tank 1 and improving the efficiency of the texturing process.

[0034] In order to realize the connection between the circulation tank 2 and the texturing tank 1, refer to Figure 1 As shown, the circulation tank 2 in this embodiment is provided with a liquid inlet 201 and a liquid outlet 202, the texturing tank 1 is provided with a liquid discharge port 121 connected to the liquid outlet 202, and the liquid inlet 201 and the liquid discharge port 121 are connected through the circulation component 3.

[0035] To achieve liquid circulation, refer to Figure 1 As shown, the circulation component 3 in this embodiment includes a circulation pump 31, a buffer barrel 32, a first circulation pipeline 33 connecting the texturing tank 1 and the buffer barrel 32, a second circulation pipeline 34 connecting the circulation tank 2 and the circulation pump 31, and a third circulation pipeline 35 connecting the circulation pump 31 and the buffer barrel 32. Among them, the second circulation pipeline 34 includes a first pipe section 341 connecting the first circulation tank 21 and the circulation pump 31 and a second pipe section 342 connecting the second circulation tank 22 and the circulation pump 31.

[0036] In order to install the circulation tank 2 on the texturing tank 1, refer to Figure 2 to Figure 4As shown, the first circulation groove 21 in this embodiment includes a first groove body 211 installed on the side wall of the texturing groove 1 and a first cover plate 212 covered on the first groove body 211, the first groove body 211 is provided with a first liquid inlet, and the first cover plate 212 is provided with a first liquid outlet 2121; the second circulation groove 22 includes a second groove body 221 sealed and installed on the bottom wall of the texturing groove 1 and a second cover plate 222 covered on the second groove body 221, the second groove body 221 is provided with a second liquid inlet, and the second cover plate 222 is provided with a second liquid outlet 2221. Specifically, a first mounting groove is provided on the side wall of the texturing groove 1, and a second mounting groove is provided on the bottom wall, the first groove body 211 and the second groove body 221 are respectively sealed and installed on the first mounting groove and the second mounting groove by means of sealing structures such as sealants, and the first cover plate 212 and the second cover plate 222 are respectively detachably installed on the first groove body 211 and the second groove body 221 by means of fasteners such as screws and bolts.

[0037] Preferably, refer to Figure 4 As shown, in this embodiment, the first cover plate 212 is flush with the side wall of the texturing tank 1, and the second cover plate 222 is flush with the bottom wall of the texturing tank 1. This can prevent the first circulation tank 21 and the second circulation tank 22 from occupying the internal space of the texturing tank 1.

[0038] Preferably, refer to Figure 3 , Figure 4 As shown, in this embodiment, a plurality of first circulation grooves 21 are arranged at intervals along the width direction of the first circulation groove 21, and a plurality of second circulation grooves 22 are arranged at intervals along the width direction of the second circulation groove 22, thereby further accelerating the liquid circulation in the texturing groove 1, reducing the dead angle area where the solution cannot circulate, and making the liquid circulation more uniform. Of course, the present application is not limited to this. When only a plurality of first circulation grooves 21 are arranged at intervals along the width direction of the first circulation groove 21; or, only a plurality of second circulation grooves 22 are arranged at intervals along the width direction of the second circulation groove 22, the effects of further accelerating the liquid circulation, reducing the dead angle area, and making the liquid circulation more uniform can also be achieved.

[0039] In order to make the liquid circulation more uniform, refer to Figure 1 Combined with Figure 3 , Figure 4 As shown, the circulation tank 2 in this embodiment is provided with a plurality of liquid outlets 202 distributed in an array, that is, the first liquid outlet 2121 on the first cover plate 212 and the second liquid outlet 2221 on the second cover plate 222 are distributed in an array.

[0040] Reference Figure 1 As shown, the texturing tank 1 in this embodiment includes a main tank 11 and a sub-tank 12 arranged on the side wall of the main tank 11, the circulation tank 2 is arranged on the main tank 11, and the drain port 121 is arranged on the sub-tank 12. The shapes of the main tank 11 and the sub-tank 12 are not limited. For example, refer to Figure 4 As shown, the side walls of the main groove 11 in this embodiment include a first side wall and a second side wall that are oppositely arranged, and a third side wall and a fourth side wall that are oppositely arranged and arranged between the first side wall and the second side wall, and a plurality of first circulation grooves 21 are arranged on the first side wall, the second side wall, the third side wall and the fourth side wall.

[0041] In this embodiment, a heating device (not shown) is arranged on the bottom wall of the main groove 11. The heating device can play a heating role.

[0042] In this embodiment, a bubbling device (not shown) is provided on the bottom wall of the main groove 11. The bubbling device can generate bubbles when in operation, and can effectively desorb the generated bubbles from the surface of the silicon wafer under the action of external force, thereby reducing the white spots that occur during the texturing process.

[0043] When the liquid rolls in the main tank 11 under the influence of the bubbling device, part of the liquid will jump out of the main tank 11 and leak out. In order to prevent the liquid from flowing out of the texturing tank 1 and causing waste, refer to Figure 1 As shown, the height of the auxiliary tank 12 in this embodiment is greater than or equal to the height of the main tank 11, so that the liquid can be retained in the auxiliary tank 12 and reflowed into the main tank 11 through the drain port 121 at the bottom of the auxiliary tank 12 and the circulation component 3, thereby reducing liquid waste.

[0044] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0045] The texturing device of the utility model can realize liquid circulation in the horizontal direction through the first circulation groove on the side wall of the texturing groove, and realize liquid circulation in the vertical direction through the second circulation groove on the bottom wall of the texturing groove, so as to accelerate the liquid circulation in the texturing groove, reduce the dead angle area where the solution cannot circulate, and make the liquid circulation more uniform;

[0046] The utility model arranges the circulation groove outside the texturing groove, does not occupy the space in the texturing groove, increases the use space of the texturing groove, and improves the efficiency of the texturing process.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A velvet making device, characterized in that: The texturing equipment includes a texturing tank, a plurality of circulation tanks located outside the texturing tank and connected to the texturing tank, and a circulation component. The circulation tank includes a first circulation tank located outside the side wall of the texturing tank and a second circulation tank located outside the bottom wall of the texturing tank. The first circulation tank and the second circulation tank are connected to the texturing tank through the circulation component.

2. The texturing equipment according to claim 1, characterized in that: The circulation tank is provided with a liquid inlet and a liquid outlet, the texturing tank is provided with a liquid discharge port connected with the liquid outlet, and the liquid inlet and the liquid discharge port are connected through a circulation component.

3. The texturing equipment according to claim 2, characterized in that: The first circulation trough includes a first trough body and a first cover plate covered on the first trough body, the first trough body is provided with a first liquid inlet, and the first cover plate is provided with a first liquid outlet; the second circulation trough includes a second trough body and a second cover plate covered on the second trough body, the second trough body is provided with a second liquid inlet, and the second cover plate is provided with a second liquid outlet.

4. The texturing equipment according to claim 3, characterized in that: The first cover plate is arranged flush with the side wall of the texturing groove; and / or, The second cover plate is arranged flush with the bottom wall of the texturing groove.

5. The texturing equipment according to claim 2, characterized in that: The circulation tank is provided with a plurality of liquid outlets distributed in an array.

6. The texturing equipment according to claim 2, characterized in that: The texturing tank comprises a main tank and a sub-tank arranged on the side wall of the main tank, the circulation tank is arranged on the main tank, and the drainage port is arranged on the sub-tank.

7. The texturing equipment according to claim 6, characterized in that: The height of the auxiliary groove is greater than or equal to the height of the main groove.

8. The texturing equipment according to claim 6, characterized in that: A heating device and / or a bubbling device is provided on the bottom wall of the main tank.

9. The texturing equipment according to claim 1, characterized in that: A plurality of the first circulation grooves are arranged at intervals along the width direction of the first circulation groove; and / or, A plurality of the second circulation grooves are arranged at intervals along a width direction of the second circulation groove.

10. The texturing equipment according to claim 1, characterized in that: The circulation component includes a circulation pump, a buffer barrel, a first circulation pipeline connecting the texturing tank and the buffer barrel, a second circulation pipeline connecting the circulation tank and the circulation pump, and a third circulation pipeline connecting the circulation pump and the buffer barrel.

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