Method for improving color photovoltaic efficiency

Abstract

The invention provides a method for improving color photovoltaic efficiency, and relates to the technical field of photovoltaic module manufacturing. The method for improving the color photovoltaic efficiency comprises the following steps that 1, a PVC or PET material is selected as a base layer, the upper surface of the base layer is covered with an adhesive layer, the adhesive layer is covered with a protective paper layer, and then the overall structure of the transparent sticker is formed; 2, mesh holes are evenly punched in the upper surface of the transparent sticker, the mesh holes are round holes with the diameter of 0.5-1.5 mm, the distance between every two adjacent mesh holes is 0.5-1.5 mm, and the mesh holes are arranged by rotating 40-50 degrees; 3, spraying a pattern layer on a non-mesh area of the transparent paste by adopting a full-color micro-pattern layer technology; and 4, pasting the transparent paste on which the picture is sprayed on the upper surface of the photovoltaic main body. According to the method for improving the color photovoltaic efficiency, through special design and fine implementation steps, the light transmittance and the power generation efficiency of the photovoltaic module are effectively improved, and meanwhile the excellent pattern color and the long-term stability of the photovoltaic module are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic component manufacturing, and in particular to a method for improving color photovoltaic efficiency. Background Art

[0002] As a new photovoltaic power generation technology, the power generation efficiency of color photovoltaic is affected by many factors. Among them, light transmittance and the covering on the surface of photovoltaic panels have an important impact on power generation efficiency. The surface covering of traditional photovoltaic panels usually affects the light transmittance, thereby reducing the power generation efficiency.

[0003] In the prior art, there are the following technical problems:

[0004] 1. Direct spraying covers the entire photovoltaic module, resulting in low efficiency. It is difficult for light to penetrate the photovoltaic module, affecting the light transmittance, thereby reducing power generation efficiency;

[0005] 2. Spraying the transparent sticker and sticking it on the module will affect the light transmittance, thereby reducing the power generation efficiency;

[0006] 3. Make circular holes on the drawing, and the mesh quality will be affected by the spraying precision and accuracy. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies of the prior art, the present invention provides a method for improving the efficiency of color photovoltaics, which solves the problem that color blocks light, affects the transmittance of light, and thus reduces the power generation efficiency.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for improving the efficiency of color photovoltaics, comprising the following steps:

[0011] Step 1: Prepare the transparent sticker:

[0012] Choose PVC or PET material as the base layer, cover the upper surface with a layer of adhesive layer, and cover the adhesive layer with a layer of protective paper to form the overall structure of the transparent sticker;

[0013] Step 2: Processing transparent stickers:

[0014] Evenly punch mesh holes on the upper surface of the transparent sticker. The mesh holes are circular holes with a diameter of 0.5-1.5 mm. The spacing between adjacent mesh holes is 0.5-1.5 mm and they are arranged in a 40-50 degree rotation.

[0015] Step 3: Spray coating:

[0016] Using full-color micro-layer technology, spray the layer on the non-mesh area of ​​the transparent sticker so that the layer only covers part of the area and retains the transparency of the mesh part;

[0017] Step 4:

[0018] Paste the transparent sticker with the sprayed picture on the upper surface of the photovoltaic body, ensuring that the transparent sticker fits tightly to the photovoltaic body without bubbles and wrinkles.

[0019] Preferably, in step 1, the thickness of the transparent sticker is 0.5-5 mm.

[0020] Preferably, in step 2, the mesh holes are punched by laser or mechanically, the mesh holes are circular holes with a diameter of 0.5 mm, the spacing between adjacent mesh holes is 0.5 mm, and the mesh holes are arranged rotated 40 degrees.

[0021] Preferably, in step 2, the mesh holes are punched by laser or mechanical punching, the mesh holes are circular holes with a diameter of 1 mm, the spacing between adjacent mesh holes is 1 mm, and the mesh holes are arranged with a rotation of 45 degrees.

[0022] Preferably, in step 2, the mesh holes are punched by laser or mechanical punching, the mesh holes are circular holes with a diameter of 1.5 mm, the spacing between adjacent mesh holes is 1.5 mm, and the mesh holes are arranged rotated 50 degrees.

[0023] Preferably, in step three, the layer includes a white ink layer and a color ink layer, the thickness of the white ink layer is 0.01-0.05mm, the thickness of the color ink layer is 0.01-0.05mm, and the white ink layer and the color ink layer are sprayed on the first transparent sticker and the second transparent sticker respectively by full-color micro-layer technology.

[0024] Preferably, the full-color micro-layer technology comprises the following steps:

[0025] Step 1: Spray the white ink layer:

[0026] On the first transparent sticker, the printing software identifies the color scale to control the ink output of the white ink in the printing press. The ink output of the white ink with a color scale of 255 is 100%, and the ink output per square meter of the white ink layer is 5-15 ml, which is printed by the printing press to form a white ink layer;

[0027] Step 2: Spray the color ink layer:

[0028] On the second transparent sticker, the color level is identified by printing software to control the ink output of the color ink in the printing press. The ink output of the color ink with a color level of 255 is 100%, and the ink output per square meter of the color ink layer is 5-15 ml, which is printed by the printing press to form a color ink layer.

[0029] Preferably, in step 4, a first transparent sticker sprayed with a white ink layer is pasted on the upper surface of the photovoltaic body, and then a second transparent sticker sprayed with a colored ink layer is pasted on the upper surface of the first transparent sticker.

[0030] (III) Beneficial effects

[0031] The present invention provides a method for improving the efficiency of color photovoltaics. It has the following beneficial effects:

[0032] 1. Mesh structure design: The transparent sticker has a mesh structure of specific size and spacing, which is the key to achieving light penetration and increasing photovoltaic efficiency. The size, spacing and rotation angle of the mesh are carefully designed to achieve the best photovoltaic efficiency improvement effect.

[0033] 2. Material selection: The transparent sticker overall structure consists of a PVC or PET material base layer, an adhesive layer and a protective backing paper layer. These materials have good transparency, weather resistance and service life, and can meet the long-term use requirements of outdoor photovoltaic modules.

[0034] 3. Manufacturing process: Meshes are made directly on the material, rather than the traditional way of making round holes on the pattern. High-precision processing technologies such as laser drilling or mechanical punching are used to ensure the precision and accuracy of the mesh, thereby improving the stability of photovoltaic efficiency.

[0035] 4. Maintain picture clarity: While improving photovoltaic efficiency, transparent stickers must also maintain picture clarity without affecting sight and viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a photovoltaic module manufactured by a method for improving color photovoltaic efficiency of the present invention;

[0037] Figure 2 This is a schematic diagram of a first transparent sticker of the present invention;

[0038] Figure 3 It is a schematic diagram of the second transparent sticker of the present invention.

[0039] Among them, 1. Photovoltaic main body; 2. First transparent sticker; 3. White ink layer; 4. Second transparent sticker; 5. Color ink layer;

[0040] 21. First mesh; 41. Second mesh. DETAILED DESCRIPTION

[0041] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1-3 As shown, an embodiment of the present invention provides a method for improving color photovoltaic efficiency, comprising the following steps:

[0044] Step 1: Prepare the transparent sticker:

[0045] Select PVC material as the base layer, cover the upper surface with a layer of adhesive layer, and cover the adhesive layer with a layer of protective paper to form the overall structure of the transparent sticker, and the thickness of the transparent sticker is 1mm, take two pieces, namely the first transparent sticker 2 and the second transparent sticker 4;

[0046] Step 2: Processing transparent stickers:

[0047] The mesh holes are evenly punched on the upper surfaces of the two transparent stickers. Specifically, high-precision processing technology such as laser punching or mechanical punching is used to ensure the precision and accuracy of the mesh holes, so that the mesh holes are circular holes with a diameter of 0.5 mm, the spacing between adjacent mesh holes is 0.5 mm, and they are arranged in a 40-degree rotation;

[0048] Step 3: Spray coating:

[0049] The full-color micro-layer technology is adopted to spray the layer on the non-mesh area of ​​the transparent sticker, so that the layer only covers part of the area and retains the transparency of the mesh part. Specifically, the layer includes a white ink layer 3 and a color ink layer 5. The thickness of the white ink layer 3 is 0.01 mm, and the thickness of the color ink layer 5 is 0.01 mm. The white ink layer 3 and the color ink layer 5 are sprayed on the first transparent sticker 2 and the second transparent sticker 4 respectively by the full-color micro-layer technology. Secondly, the full-color micro-layer technology includes the following steps:

[0050] Step 1: Spray white ink layer 3:

[0051] On the first transparent sticker 2, the printing software identifies the color scale to control the ink output of the white ink in the printer. The ink output of the white ink with a color scale of 255 is 100%, and the ink output of the white ink layer 3 per square meter is 5 ml. The white ink layer 3 is printed by the printer.

[0052] Step 2: Spraying color ink layer 5:

[0053] On the second transparent sticker 4, the color level is identified by the printing software to control the ink output of the color ink in the printing press. The ink output of the color ink with a color level of 255 is 100%, and the ink output per square meter of the color ink layer 5 is 5 ml. The color ink layer 5 is printed by the printing press;

[0054] Step 4: Paste assembly:

[0055] Paste the transparent sticker with the sprayed picture on the upper surface of the photovoltaic body. Specifically, paste the first transparent sticker 2 with the white ink layer 3 sprayed on the upper surface of the photovoltaic body 1, and then paste the second transparent sticker 4 with the color ink layer 5 sprayed on the upper surface of the first transparent sticker 2 to ensure that the transparent sticker as a whole is tightly fitted to the photovoltaic body 1 without bubbles and wrinkles.

[0056] Embodiment 2:

[0057] like Figure 1-3 As shown, an embodiment of the present invention provides a method for improving color photovoltaic efficiency, comprising the following steps:

[0058] Step 1: Prepare the transparent sticker:

[0059] Select PVC material as the base layer, cover the upper surface with a layer of adhesive layer, and cover the adhesive layer with a layer of protective paper to form the overall structure of the transparent sticker, and the thickness of the transparent sticker is 1mm, take two pieces, namely the first transparent sticker 2 and the second transparent sticker 4;

[0060] Step 2: Processing transparent stickers:

[0061] The mesh holes are evenly punched on the upper surfaces of the two transparent stickers. Specifically, high-precision processing technology such as laser punching or mechanical punching is used to ensure the precision and accuracy of the mesh holes, so that the mesh holes are circular holes with a diameter of 1 mm, the spacing between adjacent mesh holes is 1 mm, and they are arranged in a 45-degree rotation;

[0062] Step 3: Spray coating:

[0063] The full-color micro-layer technology is adopted to spray the layer on the non-mesh area of ​​the transparent sticker, so that the layer only covers part of the area and retains the transparency of the mesh part. Specifically, the layer includes a white ink layer 3 and a color ink layer 5. The thickness of the white ink layer 3 is 0.03 mm, and the thickness of the color ink layer 5 is 0.03 mm. The white ink layer 3 and the color ink layer 5 are sprayed on the first transparent sticker 2 and the second transparent sticker 4 respectively by the full-color micro-layer technology. Secondly, the full-color micro-layer technology includes the following steps:

[0064] Step 1: Spray white ink layer 3:

[0065] On the first transparent sticker 2, the printing software identifies the color scale to control the ink output of the white ink in the printing press. The ink output of the white ink with a color scale of 255 is 100%, and the ink output per square meter of the white ink layer 3 is 10 ml. The white ink layer 3 is printed by the printing press;

[0066] Step 2: Spraying color ink layer 5:

[0067] On the second transparent sticker 4, the color level is identified by the printing software to control the ink output of the color ink in the printing press. The ink output of the color ink with a color level of 255 is 100%, and the ink output per square meter of the color ink layer 5 is 10 ml. The color ink layer 5 is printed by the printing press;

[0068] Step 4: Paste assembly:

[0069] Paste the transparent sticker with the sprayed picture on the upper surface of the photovoltaic body. Specifically, paste the first transparent sticker 2 with the white ink layer 3 sprayed on the upper surface of the photovoltaic body 1, and then paste the second transparent sticker 4 with the color ink layer 5 sprayed on the upper surface of the first transparent sticker 2 to ensure that the transparent sticker as a whole is tightly fitted to the photovoltaic body 1 without bubbles and wrinkles.

[0070] Embodiment three:

[0071] like Figure 1-3 As shown, an embodiment of the present invention provides a method for improving color photovoltaic efficiency, comprising the following steps:

[0072] Step 1: Prepare the transparent sticker:

[0073] Select PVC material as the base layer, cover the upper surface with a layer of adhesive layer, and cover the adhesive layer with a layer of protective paper to form the overall structure of the transparent sticker, and the thickness of the transparent sticker is 1mm, take two pieces, namely the first transparent sticker 2 and the second transparent sticker 4;

[0074] Step 2: Processing transparent stickers:

[0075] The mesh holes are evenly punched on the upper surfaces of the two transparent stickers. Specifically, high-precision processing technology such as laser punching or mechanical punching is used to ensure the precision and accuracy of the mesh holes, so that the mesh holes are circular holes with a diameter of 1.5 mm, the spacing between adjacent mesh holes is 1.5 mm, and they are arranged rotated 50 degrees;

[0076] Step 3: Spray coating:

[0077] The full-color micro-layer technology is adopted to spray the layer on the non-mesh area of ​​the transparent sticker, so that the layer only covers part of the area and retains the transparency of the mesh part. Specifically, the layer includes a white ink layer 3 and a color ink layer 5. The thickness of the white ink layer 3 is 0.05 mm, and the thickness of the color ink layer 5 is 0.05 mm. The white ink layer 3 and the color ink layer 5 are sprayed on the first transparent sticker 2 and the second transparent sticker 4 respectively by the full-color micro-layer technology. Secondly, the full-color micro-layer technology includes the following steps:

[0078] Step 1: Spray white ink layer 3:

[0079] On the first transparent sticker 2, the printing software identifies the color scale to control the ink output of the white ink in the printing press. The ink output of the white ink with a color scale of 255 is 100%, and the ink output of the white ink layer 3 per square meter is 15 ml. The white ink layer 3 is printed by the printing press.

[0080] Step 2: Spraying color ink layer 5:

[0081] On the second transparent sticker 4, the color level is identified by the printing software to control the ink output of the color ink in the printing press. The ink output of the color ink with a color level of 255 is 100%, and the ink output per square meter of the color ink layer 5 is 15 ml. The color ink layer 5 is printed by the printing press;

[0082] Step 4: Paste assembly:

[0083] Paste the transparent sticker with the sprayed picture on the upper surface of the photovoltaic body. Specifically, paste the first transparent sticker 2 with the white ink layer 3 sprayed on the upper surface of the photovoltaic body 1, and then paste the second transparent sticker 4 with the color ink layer 5 sprayed on the upper surface of the first transparent sticker 2 to ensure that the transparent sticker as a whole is tightly fitted to the photovoltaic body 1 without bubbles and wrinkles.

[0084] Comparative Example:

[0085] A method for improving color photovoltaic efficiency comprises the following steps:

[0086] Step 1: Take a 5mm thick transparent sticker, spray a 0.05mm thick white ink layer on its surface, and then spray a 0.05mm thick colored ink layer on the surface of the white ink layer;

[0087] Step 2: Punch holes in the transparent sticker. The holes are circular holes with a diameter of 1.5 mm, and the spacing between adjacent holes is 1.5 mm.

[0088] Step 3: Paste the transparent sticker on the upper surface of the photovoltaic body.

[0089] Experimental example:

[0090] The photovoltaic modules prepared in Examples 1, 2, 3 and the comparative example were tested for performance, and the results are shown in the following table:

[0091] Example Light transmittance (%) Performance improvement rate (%) Pattern Color Embodiment 1 98.5 10.9 excellent Embodiment 2 99.1 11.2 excellent Embodiment 3 98.9 11.4 excellent Comparative Example 56.2 3.6 Difference

[0092] In summary, the photovoltaic module produced by the method for improving the color photovoltaic efficiency of the present invention has a significant efficiency improvement rate and excellent pattern color, especially in terms of light transmittance and efficiency improvement rate, far exceeding the photovoltaic module produced in the comparative example. This achievement is mainly due to the special design and implementation method of the present invention.

[0093] First, the double-layer transparent sticker structure adopted by the present invention effectively improves the light transmittance of the photovoltaic module through the carefully designed mesh arrangement and spray coating technology. The mesh design not only ensures the ventilation and heat dissipation performance of the photovoltaic module, but also improves the penetration of light, so that more light can reach the photovoltaic body, thereby improving the power generation efficiency of the photovoltaic module.

[0094] Secondly, the full-color micro-layer technology adopted by the present invention ensures the uniformity and accuracy of the layer coverage by precisely controlling the spraying amount and ink output of the white ink layer and the color ink layer. The application of this technology not only makes the pattern color of the photovoltaic module more vivid and clear, but also avoids the light blocking problem caused by too thick a coating, further improving the light transmittance and power generation efficiency of the photovoltaic module.

[0095] Finally, during the pasting and assembly process, the present invention ensures that the transparent sticker is closely attached to the photovoltaic body without bubbles and wrinkles through strict operating procedures and quality control. The careful implementation of this step not only improves the appearance quality of the photovoltaic module, but also ensures its long-term stability and reliability.

[0096] In summary, the method for improving the color photovoltaic efficiency provided by the present invention effectively improves the light transmittance and power generation efficiency of the photovoltaic module through special design and fine implementation steps, while ensuring its excellent pattern color and long-term stability. The promotion and application of this technology will inject new vitality and impetus into the development of the photovoltaic industry.

[0097] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for improving color photovoltaic efficiency, characterized by: The following steps are involved: Step 1: Prepare the transparent sticker: Choose PVC or PET material as the base layer, cover the upper surface with a layer of adhesive layer, and cover the adhesive layer with a layer of protective paper to form the overall structure of the transparent sticker; Step 2: Processing transparent stickers: Evenly punch mesh holes on the upper surface of the transparent sticker. The mesh holes are circular holes with a diameter of 0.5-1.5 mm. The spacing between adjacent mesh holes is 0.5-1.5 mm and they are arranged in a 40-50 degree rotation. Step 3: Spray coating: Using full-color micro-layer technology, spray the layer on the non-mesh area of ​​the transparent sticker so that the layer only covers part of the area and retains the transparency of the mesh part; Step 4: Paste assembly: Paste the transparent sticker with the sprayed picture on the upper surface of the photovoltaic body, ensuring that the transparent sticker fits tightly to the photovoltaic body without bubbles and wrinkles.

2. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step 1, the thickness of the transparent sticker is 0.5-5 mm.

3. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step 2, the mesh holes are punched by laser or mechanically, the mesh holes are circular holes with a diameter of 0.5 mm, the spacing between adjacent mesh holes is 0.5 mm, and the mesh holes are arranged in a 40-degree rotation.

4. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step 2, the mesh holes are punched by laser or mechanically, and the mesh holes are circular holes with a diameter of 1 mm. The spacing between adjacent mesh holes is 1 mm, and the mesh holes are arranged by rotating 45 degrees.

5. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step 2, the mesh holes are punched by laser or mechanically, and the mesh holes are circular holes with a diameter of 1.5 mm. The spacing between adjacent mesh holes is 1.5 mm, and the mesh holes are arranged in a 50-degree rotation.

6. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step three, the layer includes a white ink layer and a color ink layer, the thickness of the white ink layer is 0.01-0.05mm, the thickness of the color ink layer is 0.01-0.05mm, and the white ink layer and the color ink layer are sprayed on the first transparent sticker and the second transparent sticker respectively by full-color micro-layer technology.

7. The method for improving color photovoltaic efficiency according to claim 6, characterized in that: The full-color micro-layer technology includes the following steps: Step 1: Spray the white ink layer: On the first transparent sticker, the printing software identifies the color scale to control the ink output of the white ink in the printing press. The ink output of the white ink with a color scale of 255 is 100%, and the ink output per square meter of the white ink layer is 5-15 ml, which is printed by the printing press to form a white ink layer; Step 2: Spray the color ink layer: On the second transparent sticker, the color level is identified by printing software to control the ink output of the color ink in the printing press. The ink output of the color ink with a color level of 255 is 100%, and the ink output per square meter of the color ink layer is 5-15 ml, which is printed by the printing press to form a color ink layer.

8. The method for improving color photovoltaic efficiency according to claim 1, characterized in that: In step 4, the first transparent sticker sprayed with a white ink layer is pasted on the upper surface of the photovoltaic body, and then the second transparent sticker sprayed with a colored ink layer is pasted on the upper surface of the first transparent sticker.

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