A colored photovoltaic module that prevents light pollution
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU BOMEI SOLAR ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-30
Smart Images
Figure CN224439541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solar energy technology, and in particular to a colored photovoltaic module that prevents light pollution. Background Technology
[0002] Building Integrated Photovoltaic (BIPV) integrates photovoltaic power generation with architectural decoration, satisfying power generation needs while meeting architectural aesthetic design requirements and harmonizing with the surrounding environment.
[0003] Aesthetics have become a necessity for BIPV (Building Integrated Photovoltaics) products. Some regions in Europe have already enacted legislation mandating that photovoltaic modules installed on buildings must meet architectural aesthetic requirements and not generate light pollution. Once the cells are determined, the wattage and appearance of colored modules will be determined by the colored coating.
[0004] As a building material for generating electricity, BIPV photovoltaic modules should have an appearance, color, surface texture, and feel that are as close as possible to non-power-generating building materials in order to achieve uniformity between the power-generating and non-power-generating parts of the building's exterior.
[0005] Existing colored photovoltaic modules generally include a transparent colored panel, a transparent adhesive layer A, a cell layer, an adhesive layer B, and a backsheet stacked in sequence. The transparent colored panel includes a glass panel and a colored coating applied to the surface of the glass panel.
[0006] For example, Chinese patent document CN114171620A discloses a colored photovoltaic cell, which includes a front panel glass, a photovoltaic chip, and a back panel glass stacked sequentially from front to back; the photovoltaic chip has a quantum dot material layer on the side facing the front panel glass. This colored photovoltaic cell, by incorporating quantum dot material, enables its colorization.
[0007] Chinese patent document CN212625602U discloses a high-transmittance colored photovoltaic module, including a solar cell, an adhesive layer and a front glass panel. The adhesive layer is located between the solar cell and the front glass panel and has multiple layers. The high-transmittance colored photovoltaic module also includes a color layer, which is located between two transparent adhesive films and is an interference-type pearlescent powder layer.
[0008] While current colored components have solved the problem of appearance color, the surface is still transparent glass, lacking the natural texture, three-dimensional effect and metallic feel of traditional building materials such as granite, marble and anodized aluminum panels. The decorative effect is poor and it will also cause light pollution, which is a long-standing defect of traditional glass curtain walls. Utility Model Content
[0009] This invention provides a color photovoltaic module that prevents light pollution, thus solving the problem of light pollution caused by existing color photovoltaic modules.
[0010] The technical solution of this utility model is as follows:
[0011] A light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel, a transparent adhesive layer A, a cell layer, an adhesive layer B, and a backsheet stacked sequentially.
[0012] The anti-light pollution colored panel includes a transparent substrate and a colored anti-light pollution layer covering the surface of the transparent substrate; the colored anti-light pollution layer includes at least a color layer;
[0013] The transparent substrate of the anti-light pollution colored panel is tightly attached to the transparent adhesive layer A.
[0014] In this invention, the outermost surface of the anti-light pollution colored photovoltaic module is a colored anti-light pollution layer on a transparent substrate, which avoids the light pollution caused by the outermost surface of existing photovoltaic modules being transparent glass. This is a fundamental way to solve the light pollution problem of glass curtain walls and realize the building materialization of solar energy products.
[0015] Preferably, the colored anti-light pollution layer has an undulating textured pattern.
[0016] The colored anti-light pollution layer with its undulating texture pattern gives the surface of the colored photovoltaic module an artistic texture and three-dimensional effect, while further reducing the reflection of light by the colored anti-light pollution layer, thus further reducing the light pollution generated on the surface of the colored photovoltaic module.
[0017] More preferably, the colored anti-light pollution layer includes at least a color layer and a texture layer, and the uneven texture pattern is distributed in the texture layer.
[0018] The color layer and texture layer are separated into two layers. The texture layer has an uneven pattern, which allows the thickness of the color layer to be consistent and the light transmittance to be basically consistent throughout.
[0019] Preferably, the textured layer has a transmittance of ≥85% in the wavelength range of 380-1100nm.
[0020] The higher the light transmittance of the texture layer, the closer the light transmittance of the texture patterns of different thicknesses, so as to ensure that the power generation efficiency of the colored photovoltaic cells remains basically consistent throughout.
[0021] More preferably, the textured layer has a transmittance of ≥90% in the wavelength range of 380-1100nm, and more preferably, a transmittance of ≥95%.
[0022] The texture layer is a thick coating with an uneven surface texture pattern. The greater the thickness of the texture layer, the more obvious its surface texture. The thickness of the texture layer is usually 10-1000μm, preferably 15-500μm, and more preferably 20-200μm.
[0023] Preferably, the hardness of the texture layer is 2-4H.
[0024] The texture layer can be an organic coating or a high-temperature tempered inorganic glaze layer. Organic texture layers have good toughness, similar to rubber, hard but not brittle, with a pencil strength of 2-4H. Even in a low-temperature environment of -50℃, the textured colored glaze layer can still shrink synchronously with the glass substrate and adhere firmly. Inorganic high-temperature tempered texture layers are of the same type of material as glass panels, with similar shrinkage rates.
[0025] The texture layer is formed by applying transparent texture varnish to the surface of a transparent substrate through methods such as roller brushing, screen printing, inkjet printing, dispensing, stencil lamination, or roller pressing, and then curing it.
[0026] The higher the solids content of the texture varnish, the less volatile matter there is, resulting in less distortion of the textured pattern created by roller application and a stronger three-dimensional effect. The solids content of the texture varnish is preferably ≥50%, more preferably ≥75%, even more preferably ≥90%, and ideally 100%.
[0027] The texture layer can be any one of IR thermosetting, UV curing, moisture curing or high temperature tempering coating.
[0028] The textured layer is an IR thermosetting coating. Preferably, the textured layer is made of at least one of polyester resin, acrylic resin, polyurethane resin, epoxy resin, fluorocarbon resin, and polysiloxane resin.
[0029] The texture layer is a UV-curable coating. Preferably, the texture layer is made of at least one of polyurethane acrylate, polyester acrylate, epoxy acrylate, fluorosilicone modified acrylic resin, photosensitive acrylic resin, and multifunctional acrylate monomer.
[0030] The textured layer acts as an intermediary in direct contact with the transparent substrate. It possesses excellent adhesion and water resistance, ensuring that the colored layer on the photovoltaic module surface does not peel off during use. The textured layer can also be located on the upper surface of the colored layer, providing a textured effect while simultaneously protecting the colored layer.
[0031] The color layer has at least one color. The color layer is located on the upper or lower surface of the texture layer and is formed by curing and / or tempering a composition of transparent resin or transparent glass glaze and pigment.
[0032] Preferably, the thickness of the color layer is 3-100μm; the transmittance of the color layer in the wavelength range of 380-1100nm is ≥45%.
[0033] The thinner the color layer, the more pronounced the texture layer's unevenness.
[0034] More preferably, the thickness of the color layer is 4-30μm; the transmittance of the color layer in the wavelength range of 380-1100nm is ≥75%.
[0035] More preferably, the thickness of the color layer is 5-15μm; the transmittance of the color layer in the wavelength range of 380-1100nm is ≥85%.
[0036] The color layer is a transparent resin coating containing pigment or a transparent glass enamel coating containing pigment.
[0037] Preferably, the color layer contains weather-resistant organic or inorganic pigments.
[0038] The inorganic pigments mentioned are inorganic structural pigments, such as flake pearlescent pigments and nano-structural pigments, with a particle size range of 10nm-100μm.
[0039] The color layer can be a high-temperature tempered glaze layer, a low-temperature curing or UV-curing color coating, etc.
[0040] When the color layer is a high-temperature tempered glaze and is located on the upper surface of the texture layer, the transparent texture layer must also be a high-temperature tempered type.
[0041] The color layer can be a monochrome coating or a multi-color pattern layer.
[0042] Preferably, the surface of the colored anti-light pollution layer also has a functional layer.
[0043] The functional layer is located on the outermost layer and is in direct contact with the air. It contains functional additives that protect the textured color layer from environmental erosion while also giving the photovoltaic module special functions.
[0044] Preferably, the functional layer has at least one of the following functions: anti-glare, anti-dust accumulation, pollution resistance, self-cleaning, wind and sand resistance, acid rain resistance, and UV aging resistance.
[0045] A preferred technical solution is a light pollution-resistant colored photovoltaic module, comprising a light pollution-resistant colored panel, a transparent adhesive layer A, a battery layer, an adhesive layer B, and a backsheet stacked sequentially.
[0046] The light pollution-resistant colored panel includes a transparent substrate and a colored light pollution-resistant layer and a functional layer sequentially covering the surface of the transparent substrate; the colored light pollution-resistant layer includes at least a color layer;
[0047] The transparent substrate of the anti-light pollution colored panel is tightly attached to the transparent adhesive layer A.
[0048] In the color photovoltaic module of this utility model, the transparent substrate of the anti-light pollution color panel is closely attached to the transparent adhesive layer A, and the color anti-light pollution layer of the anti-light pollution color panel faces outward, which solves the defect that the outer surface of the existing photovoltaic module is glass and will cause light pollution. At the same time, the color anti-light pollution layer has a textured pattern with uneven texture, which gives the photovoltaic product an artistic texture and three-dimensional effect, and presents a bright color.
[0049] The transparent adhesive layer A and adhesive layer B are independently transparent solid plastic films of EVA, POE, EPE, and PVB or light-cured liquid films.
[0050] The battery layer is cadmium telluride photovoltaic glass, copper indium gallium selenide photovoltaic glass, crystalline silicon solar cell, or perovskite solar cell.
[0051] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0052] This invention coats a colored anti-light pollution layer onto the outer surface of a transparent substrate that comes into contact with air in a photovoltaic module. This is a fundamental way to solve the light pollution problem of glass curtain walls and realize the building materialization of solar energy products. The photovoltaic glass panel coated with the colored anti-light pollution layer reproduces the characteristics of real building materials in terms of both visual and tactile aspects, making it aesthetically pleasing while also generating electricity efficiently. Attached Figure Description
[0053] Figure 1 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module of Example 1;
[0054] Figure 2 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module in Example 2;
[0055] Figure 3 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module in Example 3;
[0056] Figure 4 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module in Example 4;
[0057] Figure 5 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module in Example 5;
[0058] Figure 6 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module in Example 6;
[0059] Figure 7 This is a schematic diagram of the structure of the light pollution-resistant colored photovoltaic module of Example 7. Detailed Implementation
[0060] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments described below are intended to facilitate the understanding of the present invention and do not constitute any limitation thereof.
[0061] This utility model discloses a color photovoltaic module for preventing light pollution, comprising a color panel for preventing light pollution, a transparent adhesive layer A, a battery layer, an adhesive layer B, and a back sheet stacked in sequence; the color panel for preventing light pollution includes a transparent substrate and a color anti-light pollution layer covering the surface of the transparent substrate; the color anti-light pollution layer includes at least a color layer; the transparent substrate of the color panel for preventing light pollution is in close contact with the transparent adhesive layer A.
[0062] Example 1
[0063] like Figure 1 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0064] The anti-light pollution color panel 1 includes a transparent substrate 11 and a texture layer 12, a color layer 13 and a functional layer 14 sequentially covering the surface of the transparent substrate 11.
[0065] The texture layer 12 has an uneven textured pattern, and the color layer 13 has at least one color.
[0066] The color photovoltaic module with light pollution prevention in this embodiment has a good texture effect. The color layer 13 is located between the texture layer 12 and the functional layer 14. It has uniform thickness, similar light transmittance, and consistent power generation efficiency. The transparent texture layer has excellent adhesion to the transparent substrate and good water resistance. The surface functional layer can protect the color layer from external erosion, resulting in excellent overall performance.
[0067] Example 2
[0068] like Figure 2 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0069] The anti-light pollution color panel 1 includes a transparent substrate 11 and a color layer 13 and a functional layer 14 sequentially covering the surface of the transparent substrate 11.
[0070] Example 3
[0071] like Figure 3As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0072] The anti-light pollution color panel 1 includes a transparent substrate 11 and a base coating 15, a color layer 13 and a functional layer 14 sequentially covering the surface of the transparent substrate 11.
[0073] The color photovoltaic module with anti-light pollution in this embodiment has a good texture effect. The color layer 13 is located between the base layer 15 and the functional layer 14. It has uniform thickness, similar light transmittance, and consistent power generation efficiency. The transparent base layer has excellent adhesion to the transparent substrate and good water resistance. The surface functional layer can protect the color layer from external erosion, resulting in excellent overall performance.
[0074] Example 4
[0075] like Figure 4 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0076] The anti-light pollution color panel 1 includes a transparent substrate 11 and a textured color layer 16 covering the surface of the transparent substrate 11.
[0077] Texture color layer 16 has an uneven, colored texture pattern.
[0078] Example 5
[0079] like Figure 5 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0080] The anti-light pollution color panel 1 includes a transparent substrate 11 and a textured layer 12 and a color layer 13 covering the surface of the transparent substrate 11.
[0081] Example 6
[0082] like Figure 6 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0083] The anti-light pollution color panel 1 includes a transparent substrate 11 and a color layer 13 and a texture layer 12 sequentially covering the surface of the transparent substrate 11.
[0084] Example 7
[0085] like Figure 7 As shown, a light pollution-resistant colored photovoltaic module includes a light pollution-resistant colored panel 1, a transparent adhesive layer A2, a cell layer 3, an adhesive layer B4, and a back sheet 5 stacked sequentially; the transparent substrate 11 of the light pollution-resistant colored panel 1 is in close contact with the transparent adhesive layer A2.
[0086] The anti-light pollution color panel 1 includes a transparent substrate 11 and a color layer 13, a texture layer 12, and a functional layer 14 sequentially covering the surface of the transparent substrate 11.
[0087] In the above embodiments:
[0088] The textured layer is a thick coating with an uneven surface texture. The greater the thickness, the more obvious the texture. The typical thickness is 10-1000 micrometers, the preferred thickness is 15-500 micrometers, and the more preferred thickness is 20-200 micrometers.
[0089] The texture layer is formed by curing transparent texture varnish on the surface of a transparent substrate through methods such as roller brushing, screen printing, inkjet printing, dispensing, stencil lamination, or roller pressing.
[0090] The texture layer can be any one of IR thermosetting, UV light curing, moisture curing or high temperature tempering coating.
[0091] The material of the IR thermosetting textured layer is one or a combination of two of the following: polyester resin, acrylic resin, polyurethane resin, epoxy resin, fluorocarbon resin, and polysiloxane resin.
[0092] Thermosetting texture varnish has good transparency and thixotropic properties. The texture pattern after roller brushing is stable and will not level out quickly. It is cured by rapid heating with infrared lamp to form a cured texture pattern. The curing conditions are 80-220℃ / 1-60 minutes.
[0093] The UV-cured texture layer is made of UV resin. UV resin is one or a combination of common commercially available UV-curing resins or photosensitive monomers, such as polyurethane acrylate, polyester acrylate, epoxy acrylate, fluorosilicone-modified acrylic resin, photosensitive acrylic resin, and multifunctional acrylate monomers. The applied UV texture varnish has an uneven surface; the textured pattern is quickly cured by light, resulting in a prominent textural effect.
[0094] High-temperature tempered textured layers are made by tempering transparent glass enamel at high temperatures.
[0095] The color layer has a pigment content of 0.5-50%, a thickness of 3-100 micrometers, and a light transmittance of ≥45% in the 380-1100nm range. Preferably, the color layer is located on the upper surface of the texture layer, with a pigment content of 2-30%, a thickness of 4-30 micrometers, and a light transmittance of ≥75%. More preferably, the pigment content is 3-20%, the thickness is 5-15 micrometers, and the light transmittance is ≥85%. The thinner the color layer, the more pronounced the unevenness of the texture layer. The pigments include weather-resistant organic pigments or inorganic pigments. Preferably, inorganic structural color pigments with high light transmittance, such as flake pearlescent pigments or nano-structural color pigments, have a particle size range of 10 nanometers to 100 micrometers. The color layer can be a single-color coating or a multi-color pattern layer.
[0096] In this invention, the textured layer has an undulating textured pattern on its surface, giving the photovoltaic product a three-dimensional effect. Transparent textured varnish is applied to the surface of a transparent substrate using methods such as roller brushing, screen printing, inkjet printing, multi-dot dispensing, stencil lamination, and roller pressing to form the undulating textured pattern. The colored layer can exhibit a strong metallic texture and also give the colored coating surface an artistic texture and three-dimensional effect, while solving the problem of light pollution caused by the glass outer surface of existing photovoltaic modules. The functional layer is located on the outermost layer, has high light transmittance, and is in direct contact with air. Adding functional additives protects the colored layer from environmental corrosion while also giving the photovoltaic module special functions such as anti-glare, anti-dust accumulation, pollution resistance, self-cleaning, wind and sand resistance, acid rain resistance, and UV aging resistance.
[0097] The embodiments described above provide a detailed explanation of the technical solution and beneficial effects of this utility model. It should be understood that the above descriptions are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, additions, and equivalent substitutions made within the scope of the principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A color photovoltaic module that prevents light pollution, characterized in that, It includes a color panel for preventing light pollution, a transparent adhesive layer A, a battery layer, an adhesive layer B, and a back panel, which are stacked in sequence. The anti-light pollution colored panel includes a transparent substrate and a colored anti-light pollution layer covering the surface of the transparent substrate; the colored anti-light pollution layer includes at least a color layer; The transparent substrate of the anti-light pollution colored panel is tightly attached to the transparent adhesive layer A.
2. The color photovoltaic module for preventing light pollution according to claim 1, characterized in that, The colored anti-light pollution layer has an undulating textured pattern.
3. The color photovoltaic module for preventing light pollution according to claim 2, characterized in that, The colored anti-light pollution layer includes at least a color layer and a texture layer, and the uneven texture pattern is distributed in the texture layer.
4. The color photovoltaic module for preventing light pollution according to claim 3, characterized in that, The textured layer has a transmittance of ≥85% in the wavelength range of 380-1100nm.
5. The color photovoltaic module for preventing light pollution according to claim 3, characterized in that, The thickness of the texture layer is 10-1000μm.
6. The color photovoltaic module for preventing light pollution according to claim 3, characterized in that, The hardness of the textured layer is 2-4H.
7. The color photovoltaic module for preventing light pollution according to claim 1, characterized in that, The thickness of the color layer is 3-100μm; the transmittance of the color layer in the wavelength range of 380-1100nm is ≥45%.
8. The color photovoltaic module for preventing light pollution according to claim 1, characterized in that, The surface of the colored anti-light pollution layer also has a functional layer.
9. The color photovoltaic module for preventing light pollution according to claim 8, characterized in that, The functional layer has at least one of the following functions: anti-glare, anti-dust accumulation, pollution resistance, self-cleaning, wind and sand resistance, acid rain resistance, and UV aging resistance.
10. The light pollution-resistant colored photovoltaic module according to claim 1, characterized in that, The battery layer is cadmium telluride photovoltaic glass, copper indium gallium selenide photovoltaic glass, crystalline silicon solar cell, or perovskite solar cell.