Color photovoltaic module avoiding hot spot effect and manufacturing method thereof

Abstract

This invention discloses a colored photovoltaic module that avoids hot spot effects, relating to the field of photovoltaic module technology. Its main objective is to enable colored photovoltaic modules to possess safe and efficient characteristics. The main technical solution adopted is as follows: a photovoltaic front panel, comprising a text printing area, a pattern printing area, a textless printing area, and a patternless printing area; the text printing area is edited by outputting a first white ink layer through a UV printer; the pattern printing area is edited by outputting a second white ink layer and a color layer through a UV printer; and both the textless and patternless printing areas are edited by outputting a black ink layer through a UV printer.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module technology, and in particular to a colored photovoltaic module that avoids the hot spot effect. Background Technology

[0002] Currently, there are many methods for manufacturing colored photovoltaic modules. Generally, UV printing, screen printing, or other high-temperature ink printing are used to create patterns or text on the colored modules. Usually, the light transmittance of these patterns or text is inconsistent with that of areas without patterns or text, resulting in uneven light reception of the photovoltaic system and the formation of hot spot effects, leading to significant power loss. This is because the light is blocked by the color layer, reducing the amount of light entering the power generation layer and causing a decrease in power. Consequently, the colored modules cannot achieve high efficiency and safety. Summary of the Invention

[0003] In view of this, the present invention provides a colored photovoltaic module that avoids the hot spot effect, the main purpose of which is to enable colored photovoltaics to have safe and efficient characteristics.

[0004] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0005] Embodiments of the present invention provide a colored photovoltaic module that avoids the hot spot effect. It includes:

[0006] The photovoltaic front panel includes a text printing area, a pattern printing area, and areas without text or pattern printing. The text printing area is edited by outputting a first white ink layer through a UV printer. The pattern printing area is edited by outputting a second white ink layer and a color layer through a UV printer. The areas without text or pattern printing are both edited by outputting a black ink layer through a UV printer.

[0007] As mentioned above, both the first and second white ink layers are printed using a stripe printing method, with the printing direction parallel to the ground.

[0008] As mentioned above, the width of the stripes in the first white ink layer is preferably 0.1-0.2 mm, the spacing is preferably 0.1-0.2 mm, and the thickness is preferably 0.025 mm.

[0009] As mentioned above, the preferred thickness of the color ink is 0.01-0.02 mm, and the width of the printed stripes in the second white ink layer is 0.1 mm, with a spacing of 0.2 mm.

[0010] As mentioned above, the thickness of the black ink layer is preferably 0.01-0.02 mm.

[0011] By employing the above technical solution, the color photovoltaic module of the present invention that avoids hot spot effect has at least the following advantages:

[0012] The present invention provides a color photovoltaic module that avoids hot spot effects. This module uses UV printing to output a color layer and a white ink layer to edit areas with text or patterns, and outputs a single-color black ink layer to edit areas without text or patterns. By utilizing different ink printing methods, the light transmittance of the module's patterned or unpatterned areas can be controlled between 70% and 80% through different colors and printing methods, effectively controlling the occurrence of hot spots. Furthermore, the invention uses a color layer and different white ink printing layers to control uniform incident light, resulting in uniform light transmittance and minimal color rendering differences in the patterned image. This leads to high performance and safety in the colorized module.

[0013] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the photovoltaic front panel structure of the colored photovoltaic module of the present invention to avoid the hot spot effect;

[0015] Figure 2 This is a schematic diagram of the structure of the first and second white ink layers of the colored photovoltaic module of the present invention to avoid the hot spot effect;

[0016] Figure 3 This is a sunlight incidence diagram of a colored photovoltaic module that avoids the hot spot effect according to the present invention;

[0017] Figure 4 This is a flowchart illustrating the manufacturing process of a colored photovoltaic module that avoids the hot spot effect according to the present invention. Specific implementation methods

[0018] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0019] like Figures 1 to 4 As shown, an embodiment of the present invention provides a colored photovoltaic module that avoids hot spot effects. It includes: a photovoltaic front panel 1.

[0020] The photovoltaic front panel 1 includes a text printing area 11, a pattern printing area 12, and areas without text or patterns 13. The text printing area 11 is edited using a first white ink layer 111 output by a UV printer. The pattern printing area 12 is edited using a second white ink layer and a color layer output by a UV printer. The areas without text or patterns 13 are both edited using a black ink layer output by a UV printer. Specifically, both the first and second white ink layers use a striped printing method, with the printing direction parallel to the ground. The purpose is to create gaps to allow more light to enter. Lines are used because most colored modules are installed vertically, and the striped printing direction, parallel to the ground, can refract more sunlight. Figure 3 As shown in Table 1, the transmittance of parallel stripe printing increased by 2.2% compared to vertical printing. Measurements were taken at the center point of a 50*50mm test area using a photometer (Hima AS823).

[0021] Table 1

[0022] Vertical printing Parallel printing difference% Light transmitted (lux) 223 228 Increase light transmittance by 2.2%

[0023] The first white ink layer has 111 stripes, preferably with a width of 0.1-0.2 mm, a spacing of 0.1-0.2 mm, and a thickness of 0.025 mm. This allows for optimal viewing of the pattern when the human eye's angle is greater than 30 degrees. The colored ink layer preferably has a thickness of 0.01-0.02 mm. The second white ink layer has stripes with a width of 0.1 mm and a spacing of 0.2 mm, and its light transmittance can be controlled between 70% and 80%. The black ink layer preferably has a thickness of 0.01-0.02 mm; this thickness range allows for adjustments to the light transmittance by 70% to 80%, matching the transmittance of the pattern and text within the designated area.

[0024] The present invention provides a color photovoltaic module that avoids hot spot effects. This module uses UV printing to output a color layer and a white ink layer to edit areas with text or patterns, and outputs a single-color black ink layer to edit areas without text or patterns. By utilizing different ink printing methods, the light transmittance of the module's patterned or unpatterned areas can be controlled between 70% and 80% through different colors and printing methods, effectively controlling the occurrence of hot spots. Furthermore, the invention uses a color layer and different white ink printing layers to control uniform incident light, resulting in uniform light transmittance and minimal color rendering differences in the patterned image. This leads to high performance and safety in the colorized module.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A color photovoltaic module that avoids hot spot effects, characterized in that, It includes: Photovoltaic front plate, it includes letter printing area, pattern printing area, no letter and no pattern printing area; The letter printing area is edited by the first white ink layer output by the UV printer, the pattern printing area is edited by the second white ink layer and color layer output by the UV printer, and the no letter and no pattern printing area is edited by the black ink layer output by the UV printer; The first white ink layer and the second white ink layer are both printed in stripe mode, and the printing direction is parallel to the ground; the first white ink layer stripe width is 0.1-0.2mm, the interval is 0.1-0.2mm, and the thickness is 0.025mm; the color layer thickness is 0.01-0.02mm, the second white ink layer printing stripe width is 0.1mm, and the interval is 0.2mm; the black ink layer thickness is 0.01-0.02mm.

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