Device and system for preparing photovoltaic cell

Abstract

The embodiment of the utility model provides equipment for preparing a photovoltaic cell and a system for preparing the photovoltaic cell, the equipment for preparing the photovoltaic cell comprises a plurality of bearing connecting rods and a plurality of first rollers, the plurality of bearing connecting rods are sequentially connected end to end, and each bearing connecting rod is detachably connected with the adjacent bearing connecting rod; each bearing connecting rod is fixedly sleeved with one or more first rolling wheels; the first roller is used for bearing a photovoltaic module; the bearing connecting rod is used for rotating along the axis of the bearing connecting rod so as to drive the photovoltaic module to move by driving the first roller to rotate. According to the embodiment of the invention, when a plurality of rollers or a certain roller in the transportation device needs to be disassembled or replaced, only the bearing connecting rod sleeved with the roller needs to be disassembled and separated from the adjacent bearing connecting rod, and then the first roller needing to be replaced is disassembled from the corresponding bearing connecting rod; and the first rolling wheels on other bearing connecting rods cannot be influenced, so that the maintenance process of the transportation device is simple, and the maintenance efficiency is high.

Description

Technical Field

[0001] The present application belongs to the technical field of photovoltaic cells, and in particular, relates to a device for preparing photovoltaic cells and a system for preparing photovoltaic cells. Background Art

[0002] The photovoltaic cell includes a silicon substrate. During the process of preparing the silicon substrate, the silicon substrate needs to be transferred through multiple process steps in sequence via rollers.

[0003] In daily use, the rollers may become worn or aged due to long-term use. When the rollers need to be disassembled or replaced, all the rollers need to be disassembled, and a single roller cannot be replaced, which makes maintenance work inconvenient. Utility Model Content

[0004] The embodiments of the present application provide a device for preparing a photovoltaic cell and a system for preparing a photovoltaic cell to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a device for preparing a photovoltaic cell, comprising:

[0006] A plurality of load-bearing connecting rods, wherein the plurality of load-bearing connecting rods are sequentially connected end to end, and each load-bearing connecting rod is detachably connected to its adjacent load-bearing connecting rod;

[0007] A plurality of first rollers, wherein the first rollers are used to carry photovoltaic components;

[0008] Wherein, each of the bearing connecting rod fixing sleeves is provided with one or more of the first rollers;

[0009] The load-bearing connecting rod is used to rotate along its axis to drive the first roller to rotate and thus drive the photovoltaic assembly to move.

[0010] Optionally, the load-bearing connecting rod is threadedly connected to its adjacent load-bearing connecting rod.

[0011] Optionally, the plurality of load-bearing connecting rods include:

[0012] A first load-bearing connecting rod, one end of which is provided with a threaded shaft;

[0013] A second load-bearing connecting rod is located at one end of the first load-bearing connecting rod provided with a threaded shaft, and one end of the second load-bearing connecting rod close to the first load-bearing connecting rod is provided with a threaded hole, and the other end is provided with a threaded shaft;

[0014] The third load-bearing connecting rod is located at an end of the second load-bearing connecting rod away from the first load-bearing connecting rod, and a threaded hole is provided at an end of the third load-bearing connecting rod close to the second load-bearing connecting rod.

[0015] Optionally, the plurality of load-bearing connecting rods include:

[0016] A first load-bearing connecting rod, one end of which is provided with a convex shaft;

[0017] A second load-bearing connecting rod, having a groove at one end close to the first load-bearing connecting rod;

[0018] Wherein, the convex shaft is used to be clamped in the groove to connect the first load-bearing connecting rod with the second load-bearing connecting rod.

[0019] Optionally, a plurality of position-limiting connecting rods are connected end to end in sequence, and each position-limiting connecting rod is detachably connected to its adjacent position-limiting connecting rod;

[0020] a plurality of second rollers, wherein the second rollers are used to contact a side of the photovoltaic assembly away from the first roller;

[0021] Wherein, each of the position-limiting connecting rod fixing sleeves is provided with one or more of the second rollers, and the second rollers are arranged opposite to the first rollers;

[0022] The limiting connecting rod is used to rotate along its axis, and the rotation direction of the limiting connecting rod is opposite to the rotation direction of the first load-bearing connecting rod.

[0023] Optionally, the material of the load-bearing connecting rod includes polypropylene;

[0024] The material of the limiting connecting rod includes polypropylene.

[0025] Optionally, the material of the first roller includes polyvinylidene fluoride;

[0026] The material of the second roller includes polyvinylidene fluoride.

[0027] As another aspect of the embodiment of the present application, the embodiment of the present application further provides a system for preparing a photovoltaic cell, comprising the device for preparing a photovoltaic cell as described in any one of the above items, wherein the system for preparing a photovoltaic cell further comprises:

[0028] A first liquid tank, used for holding a first process liquid;

[0029] Wherein, the first roller is partially immersed in the first process liquid.

[0030] As another aspect of the embodiment of the present application, the embodiment of the present application further provides a system for preparing a photovoltaic cell, including any of the above-mentioned devices for preparing a photovoltaic cell including a plurality of limit connecting rods, and the system for preparing a photovoltaic cell further includes:

[0031] A second liquid tank, used for holding a second process liquid;

[0032] Wherein, the second roller is partially immersed in the second process liquid.

[0033] Optionally, the system for preparing a photovoltaic cell further comprises:

[0034] The drying component is used to generate hot air to dry the second process liquid remaining on the photovoltaic component.

[0035] The equipment for preparing photovoltaic cells in the embodiment of the present application includes a plurality of the bearing connecting rods connected end to end in sequence, and each bearing connecting rod is fixedly sleeved with one or more first rollers. When it is necessary to disassemble or replace multiple or a certain roller in the transportation device, it is only necessary to disassemble and separate the bearing connecting rod on which the roller is sleeved from the adjacent bearing connecting rod, and then remove the first roller that needs to be replaced from the corresponding bearing connecting rod, without affecting the first rollers on other bearing connecting rods, so that the maintenance process of the transportation device is simple and the maintenance efficiency is high.

[0036] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0038] Figure 1 A schematic diagram of a disassembled structure of an apparatus for preparing a photovoltaic cell according to an embodiment of the present application;

[0039] Figure 2 A schematic diagram of an assembly structure of a device for preparing a photovoltaic cell according to an embodiment of the present application;

[0040] Figure 3 Another schematic diagram of the assembly structure of the equipment for preparing photovoltaic cells according to an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the disassembled structure of an embodiment of the device for preparing a photovoltaic cell according to an embodiment of the present application;

[0042] Figure 5 This is a schematic diagram of another assembly structure of the equipment for preparing photovoltaic cells according to an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 21. load-bearing connecting rod; 22. first roller; 31. limit connecting rod; 32. second roller; 211. first load-bearing connecting rod; 212. second load-bearing connecting rod; 213. third load-bearing connecting rod; 219. threaded shaft; 300. photovoltaic module. DETAILED DESCRIPTION

[0045] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0046] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present disclosure, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not mean that the present disclosure necessarily has the first element, component, region, layer or part.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] See also Figures 1 to 3 An embodiment of the present application provides a device for preparing a photovoltaic cell, including a plurality of load-bearing connecting rods and a plurality of first rollers, which are described in detail below.

[0049] A plurality of load-bearing connecting rods 21, wherein the plurality of load-bearing connecting rods 21 are sequentially connected end to end, and each load-bearing connecting rod 21 is detachably connected to its adjacent load-bearing connecting rod 21;

[0050] A plurality of first rollers 22, wherein the first rollers 22 are used to carry photovoltaic components;

[0051] Wherein, each of the bearing connecting rods 21 is fixedly sleeved with one or more of the first rollers 22;

[0052] The load-bearing connecting rod 21 is used to rotate along its axis to drive the first roller 22 to rotate and thus drive the photovoltaic assembly to move.

[0053] See also Figure 3 The multiple load-bearing connecting rods 21 connected end to end can serve as a transport axis, and the multiple transport axes can be arranged in parallel to move the photovoltaic assembly 300 along the parallel direction.

[0054] Specifically, in some embodiments, five first rollers 22 arranged in parallel are sleeved on each load-bearing connecting rod 21. The five first rollers 22 can stably carry the photovoltaic module. In other embodiments, other numbers of first rollers 22 may be sleeved on each load-bearing connecting rod 21, such as one, two, three, four, six, etc.

[0055] The photovoltaic module may include a silicon substrate or a silicon wafer, or may be a silicon wafer that has been coated. The equipment for preparing photovoltaic cells is used to transport the carried photovoltaic module to the next process step.

[0056] In order to prevent the rollers from scratching the silicon wafers when transporting them due to aging of the rollers, the equipment for preparing photovoltaic cells in this embodiment includes a plurality of the bearing connecting rods 21 connected end to end in sequence, and each bearing connecting rod 21 is fixedly sleeved with one or more first rollers 22. When it is necessary to disassemble or replace multiple or a certain roller in the transportation device, it is only necessary to disassemble and separate the bearing connecting rod 21 on which the roller is sleeved from the adjacent bearing connecting rod 21, and then remove the first roller 22 that needs to be replaced from the corresponding bearing connecting rod 21, without affecting the first rollers 22 on other bearing connecting rods 21, thereby making the maintenance process of the transportation device simple and efficient.

[0057] In an optional embodiment, the load-bearing connecting rod 21 is threadedly connected to its adjacent load-bearing connecting rod 21 .

[0058] The threaded connection method can quickly disassemble or assemble multiple load-bearing connecting rods 21. Through the rotation connection, multiple load-bearing connecting rods 21 can be relatively easily disassembled and reinstalled, thereby improving the efficiency of maintaining the transportation device.

[0059] Moreover, the threaded connection can effectively transmit force and carry load. When force or load is applied between the multiple load-bearing connecting rods 21, the threaded connection structure can provide strong tensile and shear resistance, ensuring that the threaded connection part is not easy to loosen or damage.

[0060] In other embodiments, the load-bearing connecting rod 21 and its adjacent load-bearing connecting rod 21 may also be detachably connected in other ways.

[0061] Specifically, see Figure 4 In this embodiment, the plurality of load-bearing connecting rods 21 include:

[0062] A first load-bearing connecting rod 211, one end of which is provided with a threaded shaft 219;

[0063] The second load-bearing connecting rod 212 is located at one end of the first load-bearing connecting rod 211 provided with the threaded shaft 219. The second load-bearing connecting rod 212 has a threaded hole (not marked in the figure) at one end close to the first load-bearing connecting rod 211 and a threaded shaft 219 at the other end;

[0064] The third load-bearing connecting rod 213 is located at an end of the second load-bearing connecting rod 212 away from the first load-bearing connecting rod 211 , and a threaded hole is provided at an end of the third load-bearing connecting rod 213 close to the second load-bearing connecting rod 212 .

[0065] In this embodiment, one end of each load-bearing connecting rod 21 is a threaded shaft 219, and the other end is a threaded hole, so that the structure of each load-bearing connecting rod 21 is the same, which is convenient for mass production. There is no need to customize a certain load-bearing connecting rod 21. When a certain load-bearing connecting rod 21 is aged or bent, it can be directly removed and replaced, and the overall maintenance efficiency is high.

[0066] Furthermore, the overall connection length can be adjusted by reducing or increasing the number of mutually connected load-bearing connecting rods 21, so as to facilitate the transportation of photovoltaic modules of different specifications, and the overall versatility is high.

[0067] In an optional embodiment, the plurality of load-bearing connecting rods 21 include:

[0068] A first load-bearing connecting rod 211, one end of which is provided with a convex shaft;

[0069] A second load-bearing connecting rod 212, having a groove at one end close to the first load-bearing connecting rod 211;

[0070] The convex shaft is used to be clamped in the groove to connect the first load-bearing connecting rod 211 with the second load-bearing connecting rod 212 .

[0071] The adjacent load-bearing connecting rods 21 are mutually clamped by the protruding shafts and the grooves, so as to facilitate disassembly and installation, replacement and maintenance.

[0072] Specifically, a first through hole may be provided on the convex shaft of the first bearing connecting rod 211, and a second through hole penetrating the side wall of the groove may be provided on the second bearing connecting rod 212. The second through hole and the first through hole are provided correspondingly. When the convex shaft of the first bearing connecting rod 211 is inserted into the groove of the second bearing connecting rod 212, the first through hole and the second through hole are communicated, so as to pass through the fixing member, so as to strengthen the connection between the first bearing connecting rod 211 and the second bearing connecting rod 212. The fixing member may be a bolt or a pin.

[0073] In the production process of photovoltaic modules, the photovoltaic modules may need to be immersed in liquid or dried. During such processes, due to the light weight of the photovoltaic modules, they are prone to floating on the liquid or being blown away.

[0074] Based on this, see Figure 5 In an optional embodiment, the device for preparing a photovoltaic cell further comprises:

[0075] A plurality of position-limiting connecting rods 31, wherein the plurality of position-limiting connecting rods 31 are sequentially connected end to end, and each position-limiting connecting rod 31 is detachably connected to its adjacent position-limiting connecting rod 31;

[0076] a plurality of second rollers 32, wherein the second rollers 32 are used to contact a side of the photovoltaic assembly away from the first roller 22;

[0077] Wherein, each of the limiting connecting rods 31 is fixedly sleeved with one or more second rollers 32, and the second rollers 32 are arranged opposite to the first rollers 22;

[0078] The limiting connecting rod 31 is used to rotate along its axis, and the rotation direction of the limiting connecting rod 31 is opposite to the rotation direction of the first load-bearing connecting rod 21 .

[0079] The second roller 32 sleeved on the limiting connecting rod 31 can limit the photovoltaic assembly 300 on the first roller 22, that is, the limiting connecting rod 31 and the bearing connecting rod 21 clamp the photovoltaic assembly 300, thereby preventing the photovoltaic assembly 300 from floating on the liquid or being blown away during the process. In addition, when the limiting connecting rod 31 rotates, the second roller 32 is driven to rotate, and the photovoltaic assembly 300 can also be driven to move. By rotating the second roller 32 and the first roller 22 at the same time to drive the photovoltaic assembly 300 to move, the photovoltaic assembly 300 can be reduced from sliding relative to the second roller 32 and the first roller 22.

[0080] The connection method between the plurality of limit connecting rods 31 may refer to the connection method between the plurality of load-bearing connecting rods 21 , which will not be described in detail here.

[0081] In this embodiment, the material of the load-bearing connecting rod 21 includes polypropylene;

[0082] The material of the limiting connecting rod 31 includes polypropylene.

[0083] Polypropylene (PP) has good chemical resistance, corrosion resistance, light weight, high strength and high temperature resistance, and can better adapt to the production environment in multiple production processes of photovoltaic cells. In other embodiments, the material of the load-bearing connecting rod 21 and the material of the limiting connecting rod 31 may also include other materials.

[0084] In this embodiment, the material of the first roller 22 includes polyvinylidene fluoride;

[0085] The material of the second roller 32 includes polyvinylidene fluoride.

[0086] Polyvinylidene fluoride (PVDF) has good chemical resistance, high temperature resistance, UV resistance and electrical insulation. It can better adapt to the production environment in multiple production processes of photovoltaic cells. In other embodiments, the material of the first roller 22 and the material of the second roller 32 may also include other materials.

[0087] The present application also provides a system for preparing a photovoltaic cell, including any one of the above-mentioned devices for preparing a photovoltaic cell, wherein the system for preparing a photovoltaic cell further includes:

[0088] A first liquid tank, used for holding a first process liquid;

[0089] Wherein, the first roller is partially immersed in the first process liquid.

[0090] The first process liquid may be a liquid containing hydrofluoric acid (HF), and the first roller may carry a silicon wafer. Hydrofluoric acid can help the silicon wafer to be hydrophobic, and the hydrofluoric acid can react with the oxide layer on the surface of the silicon wafer to generate silicon fluoride. Silicon fluoride is a hydrophobic substance that can reduce the surface energy of the silicon wafer surface, making it easier to repel water. After the silicon wafer is hydrophobic, the residual water droplets on the surface can be reduced, thereby reducing the corrosion of the surface by water. Specifically, the first roller drives the hydrofluoric acid and contacts the silicon wafer by rotating, so that the hydrofluoric acid reacts with the oxide layer on the surface of the silicon wafer.

[0091] The embodiment of the present application further provides a system for preparing a photovoltaic cell, comprising any one of the above-mentioned devices for preparing a photovoltaic cell including a plurality of limit connecting rods, wherein the system for preparing a photovoltaic cell further comprises:

[0092] A second liquid tank, used for holding a second process liquid;

[0093] Wherein, the second roller is partially immersed in the second process liquid.

[0094] The first roller is completely located in the second process liquid, and the second roller is partially immersed in the second process liquid, so that the silicon wafer located between the first roller and the second roller can be completely immersed in the second process liquid in the second liquid tank when being transported by the rollers. The second roller can press the silicon wafer to prevent the silicon wafer from floating up due to the buoyancy generated by the second process liquid, resulting in incomplete immersion of the silicon wafer.

[0095] Specifically, the second process liquid may be deionized water, and the photovoltaic module may be a silicon wafer. After the silicon wafer has undergone a hydrofluoric acid hydrophobic process, the hydrofluoric acid remaining on the silicon wafer needs to be removed. The hydrofluoric acid or other process liquids remaining on the silicon wafer are cleaned by immersing the silicon wafer in deionized water.

[0096] In other embodiments, the second process liquid may also be a liquid containing sodium hydroxide or ammonium sulfate.

[0097] Furthermore, in this embodiment, the system for preparing photovoltaic cells may further include a drying component for generating hot air to dry the second process liquid remaining on the photovoltaic component.

[0098] Specifically, in this embodiment, the photovoltaic module can be a silicon wafer. After the silicon wafer passes through the second liquid tank, the second process liquid will remain on the silicon wafer. At this time, hot air can be blown out by the drying component to dry the second process liquid remaining on the silicon wafer. The temperature range of the hot air can be 85°C to 95°C.

[0099] By clamping the silicon wafer between the second roller and the first roller, the problem of the hot air blown out by the drying component causing the silicon wafer to be bent or blown away can be avoided.

[0100] Other components of the equipment for preparing photovoltaic cells and the system for preparing photovoltaic cells in the above-mentioned embodiments may adopt various technical solutions known to ordinary technicians in the field now and in the future, and will not be described in detail here.

[0101] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0102] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A device for preparing a photovoltaic cell, characterized in that: include: A plurality of load-bearing connecting rods, wherein the plurality of load-bearing connecting rods are sequentially connected end to end, and each load-bearing connecting rod is detachably connected to its adjacent load-bearing connecting rod; A plurality of first rollers, wherein the first rollers are used to carry photovoltaic components; Wherein, each of the bearing connecting rod fixing sleeves is provided with one or more of the first rollers; The load-bearing connecting rod is used to rotate along its axis to drive the first roller to rotate and thus drive the photovoltaic assembly to move.

2. The device for preparing a photovoltaic cell according to claim 1, characterized in that: The load-bearing connecting rod is threadedly connected to its adjacent load-bearing connecting rod.

3. The device for preparing a photovoltaic cell according to claim 2, characterized in that: The plurality of load-bearing connecting rods include: A first load-bearing connecting rod, one end of which is provided with a threaded shaft; A second load-bearing connecting rod is located at one end of the first load-bearing connecting rod provided with a threaded shaft, and one end of the second load-bearing connecting rod close to the first load-bearing connecting rod is provided with a threaded hole, and the other end is provided with a threaded shaft; The third load-bearing connecting rod is located at an end of the second load-bearing connecting rod away from the first load-bearing connecting rod, and a threaded hole is provided at an end of the third load-bearing connecting rod close to the second load-bearing connecting rod.

4. The device for preparing a photovoltaic cell according to claim 1, characterized in that: The plurality of load-bearing connecting rods include: A first load-bearing connecting rod, one end of which is provided with a convex shaft; A second load-bearing connecting rod, having a groove at one end close to the first load-bearing connecting rod; Wherein, the convex shaft is used to be clamped in the groove to connect the first load-bearing connecting rod with the second load-bearing connecting rod.

5. The device for preparing a photovoltaic cell according to claim 1, characterized in that: Also includes: A plurality of position-limiting connecting rods, wherein the plurality of position-limiting connecting rods are sequentially connected end to end, and each position-limiting connecting rod is detachably connected to its adjacent position-limiting connecting rod; a plurality of second rollers, wherein the second rollers are used to contact a side of the photovoltaic assembly away from the first roller; Wherein, each of the position-limiting connecting rod fixing sleeves is provided with one or more of the second rollers, and the second rollers are arranged opposite to the first rollers; The limiting connecting rod is used to rotate along its axis, and the rotation direction of the limiting connecting rod is opposite to the rotation direction of the bearing connecting rod.

6. The device for preparing a photovoltaic cell according to claim 5, characterized in that: The material of the load-bearing connecting rod includes polypropylene; The material of the limiting connecting rod includes polypropylene.

7. The device for preparing photovoltaic cells according to claim 5, characterized in that: The material of the first roller includes polyvinylidene fluoride; The material of the second roller includes polyvinylidene fluoride.

8. A system for preparing a photovoltaic cell, characterized in that: The device for preparing a photovoltaic cell according to any one of claims 1 to 7, wherein the system for preparing a photovoltaic cell further comprises: A first liquid tank, used for holding a first process liquid; Wherein, the first roller is partially immersed in the first process liquid.

9. A system for preparing a photovoltaic cell, characterized in that: The device for preparing a photovoltaic cell according to any one of claims 5 to 7, wherein the system for preparing a photovoltaic cell further comprises: A second liquid tank, used for holding a second process liquid; Wherein, the second roller is partially immersed in the second process liquid.

10. The system for preparing a photovoltaic cell according to claim 9, characterized in that: Also includes: The drying component is used to generate hot air to dry the second process liquid remaining on the photovoltaic component.

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