Ink and Colored Solar Module

Abstract

This application provides an ink and a colored solar module containing the ink. The ink contains an infrared reflective powder and a color-developing toner. In the ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color-developing toner is 0.1% to 20%, preferably 1% to 5%. In this application, by optimizing the color imparting means, while imparting color, it is ensured that the module has high efficiency. Furthermore, by adding an infrared reflective toner, the reflectivity of the front panel glass of the module to infrared rays becomes higher, contributing to a decrease in the operating temperature of the module, improving the power generation amount, and extending the life of the module.

Description

Technical Field

[0001] (Cross - reference to Related Applications) This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 16, 2022, with the application number 202210529641.0 and the title of the invention being "Ink and Colored Solar Module", and all of its contents are incorporated herein by reference. In addition, this application claims the priority of a Chinese patent application filed with the Chinese Patent Office on January 29, 2023, with the application number 202310078270.3 and the title of the invention being "Ink and Colored Solar Module", and all of its contents are incorporated herein by reference.

[0002] This application belongs to the technical field of solar cells, and specifically relates to ink and colored solar modules.

Background Art

[0003] As a means for capturing and converting light energy, solar modules have, through long-term technological innovation and generational change, now become highly efficient and are widely applied in large-scale ground power plants. With the expansion of the installation volume of photovoltaic devices, the utilization of ground surface area is approaching saturation, while the large area of numerous buildings has become an optimal option for installing photovoltaic devices as a sunlight receiving surface. By installing photovoltaic devices on buildings, while increasing energy income, it is possible to reduce the energy consumption of the buildings, enable the buildings to use electricity generated by themselves, and reduce the losses caused by long-distance power transmission. However, photovoltaic cells generally have a monotonous dark blue or black color and cannot meet the diverse demands for the appearance of buildings. There are, for example, thin-film battery technologies using cadmium telluride, copper indium gallium selenide, etc. in the technology of photovoltaic cells, but many of these technologies have low efficiency. Crystalline silicon, as a mature photovoltaic power generation technology, has now reached a mass production efficiency of over 24% and is thus considered a suitable technology for building-integrated solar power generation. As a method for realizing the demand for diversification of the color of solar modules, there is, for example, a method of using a colored adhesive film with an inorganic or organic dye added to the adhesive film. However, in this method, due to light absorption by the dye, the efficiency of the solar module is significantly reduced, and there is also a risk of color fading, making it difficult to be a suitable choice for coloring the solar module. Furthermore, a method of applying a colored plating film layer on the surface of the battery cell is also considered, but in this method, it is difficult to control the thickness of the plating film layer, so it is difficult to make the color uniform, and the appearance is greatly damaged. Therefore, a more suitable color application means is needed.

[0004] On the one hand, when the solar module operates, it is irradiated by sunlight, and the light energy of some wavelengths (380 - 1100 nm) can be absorbed by the silicon solar cell and converted into electrical energy and thermal energy. However, another part, especially the infrared light energy with a wavelength of 1100 nm or more, cannot be converted into electrical energy by the battery cell and can be absorbed and converted into thermal energy. Such energy of 1100 nm or more accounts for about 30% of the total energy of the spectrum. When absorbed by the solar module, it generates a large amount of thermal energy, causing the temperature of the solar module to rise. When the operating temperature of the solar module increases, not only does its power output decrease, but also the activity of the polymer material becomes stronger at high temperatures, making it more likely to deteriorate and decay. When the solar module operates in a large-scale power plant, its front and back surfaces are both exposed to the flowing air, with a high heat transfer coefficient, and the generated thermal energy can be quickly dissipated. In such an environment, its operating temperature is not too high and generally does not exceed 70°C. However, when the solar module is applied to a building, generally, the back side is a solid wall, thermal insulation cotton, etc., and the air fluidity becomes poor. Due to the lack of a heat dissipation path on the back side, the operating temperature of the solar module rises significantly and may even exceed 90°C. In such a high-temperature case, the life of the module is significantly shortened. Therefore, in order to reduce the operating temperature of the module, it is necessary to optimize the conventional design or materials.

Summary of the Invention

[0005] Regarding the problems existing in the prior art, the present application provides an ink and a colored solar module.

[0006] Specifically, the present application relates to the following aspects.

[0007] An ink containing an infrared reflective powder and a coloring toner, wherein in the ink, the mass ratio of the infrared reflective powder is 0.1% - 30%, preferably 5% - 15%, and the mass ratio of the coloring toner is 0.1% - 20%, preferably 1% - 5%.

[0008] Optionally, the infrared reflective powder has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm.

[0009] Optionally, the infrared reflective powder is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm, and the color-developing toner is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm.

[0010] Optionally, the infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked. The thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm.

[0011] Optionally, the infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO 2 / Ag / TiO 2 、Al 2 O 3 / Ag / Al 2 O 3 、ZnO / Ag / ZnS, and is preferably ZnS / Ag / ZnS.

[0012] Optionally, the ink is a high-temperature ink composed of an infrared reflective powder, a color-developing toner, glass powder, and an organic solvent.

[0013] Optionally, in the high-temperature ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%; the mass ratio of the color-developing toner is 0.1% to 20%, preferably 1% to 5%; the mass ratio of the glass powder is 30% to 70%; and the mass ratio of the organic solvent is 10% to 40%.

[0014] Optionally, the ink is a low-temperature ink composed of an infrared reflective powder, a color-developing toner, and an organic solvent.

[0015] Optionally, in the low-temperature ink, the mass ratio of the infrared-reflective powder is 0.1% to 30%, preferably 5% to 15%, the mass ratio of the color toner is 0.1% to 20%, preferably 1% to 5%, and the mass ratio of the organic solvent is 70% to 99.9%.

[0016] A colored solar module including a colored glass layer, a battery chip layer, a first lower-layer flexible adhesive film layer, a reinforcing adhesive film layer, a second lower-layer flexible adhesive film layer, and a back glass layer, which are sequentially stacked and arranged.

[0017] Optionally, the colored glass layer includes a surface glass layer, a color glaze layer, and an upper-layer adhesive film layer, which are sequentially stacked and arranged, and the upper-layer adhesive film layer is closer to the battery chip layer than the surface glass layer and the color glaze layer.

[0018] Optionally, the color glaze layer includes an infrared-reflective powder and a color toner. In the color glaze layer, the mass ratio of the infrared-reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color toner is 0.1% to 20%, preferably 1% to 5%.

[0019] Optionally, the thickness of the color glaze layer is 5 μm to 100 μm, preferably 10 μm to 30 μm.

[0020] Optionally, the color glaze layer is formed by the ink according to any one of the above.

[0021] Optionally, the colored glass layer includes a surface glass layer and an upper-layer adhesive film layer, which are sequentially stacked and arranged, and the upper-layer adhesive film layer is closer to the battery chip layer than the surface glass layer. The upper-layer adhesive film layer includes an infrared-reflective powder and a color toner. In the upper-layer adhesive film layer, the mass ratio of the infrared-reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color toner is 0.1% to 20%, preferably 1% to 5%.

[0022] Optionally, the infrared reflective powder has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectivity to infrared light with a wavelength of 1100 nm to 5000 nm.

[0023] Optionally, the infrared reflective powder is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm, and the color-developing toner is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm.

[0024] Optionally, the infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked. The thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm.

[0025] Optionally, the infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO 2 / Ag / TiO 2 、Al 2 O 3 / Ag / Al 2 O 3 、ZnO / Ag / ZnS, and is preferably ZnS / Ag / ZnS.

[0026] A colored solar module including a surface glass layer, an upper adhesive film layer, a battery chip layer, a lower adhesive film layer, and a back panel that are sequentially stacked, and including an infrared reflective powder and a color-developing toner on or within the front radiation receiving side.

[0027] Optionally, the colored solar module has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectivity to infrared light with a wavelength of 1100 nm to 5000 nm.

[0028] Optionally, the infrared reflective powder is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm, and the color-developing toner is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm.

[0029] Optionally, the infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked. The thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm.

[0030] Optionally, the infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO 2 / Ag / TiO 2 、Al 2 O 3 / Ag / Al 2 O 3 、ZnO / Ag / ZnS, and preferably ZnS / Ag / ZnS.

[0031] Optionally, the colored solar module includes a color glaze layer provided between the surface glass layer and the upper adhesive film layer or on the air side of the surface glass layer. The color glaze layer includes an infrared reflective powder and a coloring toner.

[0032] Optionally, the color glaze layer is formed by the ink described in any one of the above.

[0033] Optionally, the upper adhesive film layer includes an infrared reflective powder and a coloring toner.

[0034] Optionally, in the upper adhesive film layer, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the coloring toner is 0.1% to 20%, preferably 1% to 5%.

[0035] Optionally, the lower adhesive film layer includes a first lower flexible adhesive film layer, a reinforcing adhesive film layer, and a second lower flexible adhesive film layer that are sequentially stacked.

[0036] In this application, by optimizing the color application means, while applying color, it is ensured that the module has high efficiency. Furthermore, by adding infrared reflective toner, the reflectivity of the front panel glass of the module to infrared rays becomes higher, contributing to a decrease in the operating temperature of the module, improving the power generation amount, and extending the life of the module.

[0037] The above is only a general description of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and make it feasible based on the content of the specification, and to make it easier to understand the above and other objects, features and advantages of the present invention, specific embodiments of the present invention will be exemplified below.

Brief Description of the Drawings

[0038] In order to more clearly explain the technical means in the embodiments or prior art of the present invention, next, the drawings used in the description of the embodiments or prior art will be briefly described. Obviously, the drawings described below are part of the embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0039]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0040] To make the objectives, technical means, and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of this application are referred to below, and the technical means in the embodiments of the present invention will be clearly and completely described. Of course, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, any other embodiments obtained by those skilled in the art without creative labor shall fall within the protection scope of this application.

[0041] Next, this application will be further described with reference to the embodiments. The embodiments are not intended to limit this application but are only for further explaining and describing this application.

[0042] Unless otherwise specified, in this specification, terms related to technology and science have the same meaning as generally understood by those skilled in the art. In this specification, materials and methods are described below. In experiments or actual applications, methods and materials similar or equivalent to those described herein may be applied. In case of conflict, it shall conform to the definitions included in this specification. Also, the materials, methods, and examples are for illustrative purposes only and not restrictive. The following will further explain this application with specific embodiments, but the scope of this application will not be limited thereby.

[0043] This application provides an ink. The ink contains infrared-reflective powder and color-developing toner. In the ink, the mass ratio of the infrared-reflective powder is 0.1% to 30%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and preferably 5% to 15%. The mass ratio of the color-developing toner is 0.1% to 20%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, and preferably 1% to 5%.

[0044] The infrared reflective powder is a powder capable of reflecting infrared light, and preferably has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm.

[0045] In a specific embodiment, that the infrared reflective powder has a high transmittance to light with a wavelength of 300 nm to 1100 nm means that the transmittance to light with a wavelength of 300 nm to 1100 nm is at least 50%, for example, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc.

[0046] In a specific embodiment, that the infrared reflective powder has a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm means that the reflectance to infrared light with a wavelength of 1100 nm to 5000 nm is at least 40%, for example, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, etc.

[0047] The infrared reflective powder is a transparent or translucent sheet, and the thickness of the sheet is 0.5 μm to 5 μm, for example, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4.0 μm, 4.5 μm, 5 μm. Since the infrared reflective powder itself is a transparent or translucent sheet, there is extremely little shielding and absorption of incident light, so that the transmittance of the incident light is not reduced.

[0048] In a specific embodiment, the infrared reflective powder has a three-layer structure including a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked. The thickness of the first dielectric film layer is 10 nm to 100 nm, and for example, it may be 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, 55 nm, 60 nm, 65 nm, 70 nm, 75 nm, 80 nm, 85 nm, 90 nm, 95 nm, 100 nm. The thickness of the metal film layer is 3 nm to 30 nm, and for example, it may be 3 nm, 4 nm, 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm, 11 nm, 12 nm, 13 nm, 14 nm, 15 nm, 16 nm, 17 nm, 18 nm, 19 nm, 20 nm, 21 nm, 22 nm, 23 nm, 24 nm, 25 nm, 26 nm, 27 nm, 28 nm, 29 nm, 30 nm. The thickness of the second dielectric film layer is 10 nm to 100 nm, and for example, it may be 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, 55 nm, 60 nm, 65 nm, 70 nm, 75 nm, 80 nm, 85 nm, 90 nm, 95 nm, 100 nm.

[0049] The materials of the first dielectric film layer and the second dielectric film layer may be selected from ZnS, ZnO, ZnSe, Bi 2 O 3 , NbO 5 , CeO 2 . The materials of the first dielectric film layer and the second dielectric film layer may be the same or different. The material of the metal film layer may be selected from Ag, Au, Cu, Mo, Al. The infrared reflective powder can adjust the reflection and transmission of light in different wavelength ranges according to the materials and thicknesses of the dielectric film layer and the metal film layer.

[0050] In a specific embodiment, the infrared reflective powder is ZnS / Ag / ZnS, SiO 2 / Ag / TiO 2 , Al 2 O 3 / Ag / Al 2 O 3, one or more selected from ZnO / Ag / ZnS, preferably ZnS / Ag / ZnS. Taking ZnS / Ag / ZnS as an example, ZnS / Ag / ZnS includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked. The first dielectric film layer and the second dielectric film layer are ZnS, and the metal film layer is Ag. The thickness of the ZnS layer is 10 nm to 100 nm, and the thickness of the Ag layer is 3 nm to 30 nm.

[0051] In a specific embodiment, the infrared reflective powder may be, for example, an infrared reflective powder manufactured based on the above structure or a commercially available product purchased. For example, the infrared reflective powder of ZnS / Ag / ZnS can be manufactured by the following method. Based on a single-sided polished Si(111) wafer and K9 glass as a plate with a thickness of 2 mm, using a box-type vacuum coater, ZnS is deposited by electron beam evaporation. After the deposition of the first layer of ZnS, using high-purity silver particles as the evaporation source, in a box-type vacuum coater, an Ag thin film layer is manufactured by resistance thermal evaporation. Subsequently, a third layer of ZnS film is manufactured in the same manner as the first layer of ZnS. After manufacturing, the multilayer film is peeled off from the base and pulverized to obtain an infrared reflective powder.

[0052] The color toner may be any color toner available in the art. For example, it may be a multilayer oxide composed of oxides of metals such as titanium, aluminum, silicon, tin, zirconium, zinc, etc., or TiO 2It may be a multilayer structure formed by adding natural mica or synthetic mica to metal oxides such as etc., which exhibits different colors by optical interference, or it may be a multilayer oxide having the characteristics of a micro-nano structure. The color-developing toner is a transparent or translucent sheet, and the thickness of the sheet is 0.5 μm to 5 μm. For example, it may be 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4.0 μm, 4.5 μm, 5 μm. The transparent or translucent sheet does not reduce the light transmittance of the surface. Further, when the infrared reflecting powder and the color-developing toner are arranged on or inside the front radiation receiving side of the solar module, the infrared reflecting powder is dispersed in the ink to form a plurality of optical scattering centers, and in cooperation with the color-developing toner, by increasing the secondary reflection of light, the transmittance of the incident light is increased and the power generation efficiency is improved. Furthermore, by light scattering, the flip-flop defect is reduced and the aesthetic appearance of the whole module is improved.

[0053] In a specific embodiment, the color-developing toner may be a substance obtained by any method and exhibiting different colors by optical interference. For example, it may be a commercially available or self-manufactured blue pearl powder, a nano-toner of a red multilayer oxide.

[0054] For example, the nano-toner of the red multilayer oxide can be manufactured by the following method. Using K9 glass as a base, applying a release agent to the surface of the glass, and using a vacuum coater, by electron beam deposition, TiO 2 and SiO 2 materials are deposited in this order on the base in a film form to form a multilayer oxide film. After the deposition is completed, by performing release and pulverization, a nano-toner of a red multilayer oxide can be obtained.

[0055] The ink of this application may be high-temperature ink or low-temperature ink. When it is high-temperature ink, the ink of this application is composed of infrared-reflective powder, color-developing toner, glass powder and organic solvent. The glass powder is formed by smelting and pulverizing a mixture of silicon oxide, bismuth oxide, boron oxide, zinc oxide, potassium carbonate, titanium oxide, zirconium oxide, aluminum oxide, calcium oxide, strontium oxide, glass strengthening agent, glass fining agent, decolorizing agent, etc.

[0056] In the high-temperature ink, the mass ratio of the infrared-reflective powder is 0.1% - 30%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and preferably 5% - 15%. The mass ratio of the color-developing toner is 0.1% - 20%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, and preferably 1% - 5%. The mass ratio of the glass powder is 30% - 70%, for example, it may be 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%. The mass ratio of the organic solvent is 10% - 40%, for example, it may be 10%, 15%, 20%, 25%, 30%, 35%, 40%.

[0057] The organic solvent is selected from hexanediol acrylate, functional acrylate, coupling agent, photocatalyst and other resins, etc. The materials of the infrared-reflective powder and the color-developing toner are as described above.

[0058] When the ink is low-temperature ink, it is composed of infrared-reflective powder, color-developing toner and organic solvent. The materials of the infrared-reflective powder, color-developing toner and organic solvent are as described above.

[0059] In the low-temperature ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and preferably it is 5% to 15%. The mass ratio of the color-developing toner is 0.1% to 20%, for example, it may be 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, and preferably it is 1% to 5%. The mass ratio of the organic solvent is 70% to 99.9%.

[0060] This application further provides a colored solar module. The colored solar module includes a colored glass layer, a battery chip layer, a first lower-layer flexible adhesive film layer, a reinforcing adhesive film layer, a second lower-layer flexible adhesive film layer, and a back glass layer, which are sequentially laminated and arranged.

[0061] The colored glass layer includes an infrared reflective powder and a color-developing toner. For the infrared reflective powder and the color-developing toner, those described above for the ink are used.

[0062] In a specific embodiment, the infrared reflective powder has a three-layer structure including a first dielectric film layer, a metal film layer, and a second dielectric film layer, which are sequentially laminated and arranged. The thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm.

[0063] In a specific embodiment, the infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO 2 / Ag / TiO 2 、Al 2 O 3 / Ag / Al 2 O 3 、ZnO / Ag / ZnS, and preferably it is ZnS / Ag / ZnS.

[0064] The colored glass layer may have two types of structures. As the first type, it includes a surface glass layer, a color glaze layer, and an upper adhesive film layer that are sequentially laminated, and the upper adhesive film layer is closer to the battery chip layer than the surface glass layer and the color glaze layer. The color glaze layer includes an infrared reflection powder and a coloring toner. In the color glaze layer, the mass ratio of the infrared reflection powder is 0.1% to 30%, for example, 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and preferably 5% to 15%. The mass ratio of the coloring toner is 0.1% to 20%, for example, 0.1%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, and preferably 1% to 5%.

[0065] As shown in FIG. 1, the colored solar module with such a structure includes a surface glass layer 1, a color glaze layer 2, an upper adhesive film layer 3, a battery chip layer 4, a first lower flexible adhesive film layer 5, a reinforcing adhesive film layer 6, a second lower flexible adhesive film layer 7, and a back glass layer 8 that are sequentially laminated.

[0066] The surface glass layer 1 may be selected differently according to the application scenario. When used in the field of building curtain walls, it is preferably low-iron float glass, and its thickness may be selected from 2 mm to 16 mm according to the design requirements. Also, according to actual needs, an anti-reflection film may be coated on the surface of the glass. When used as a decorative roof covering material, it may be selected from 1 to 5 mm low-iron patterned glass or low-iron float glass. Also, according to actual needs, an anti-reflection film may be coated on the surface of the glass.

[0067] The color glaze layer 2 adheres to the surface glass layer 1 and can be obtained by adhering ink containing infrared reflective powder and color toner to the glass by screen printing or spray coating and then sintering in a temperature range of 500 to 800 °C. The ink may be the high-temperature ink or low-temperature ink described above in this application.

[0068] In a specific embodiment, the thickness of the color glaze layer is 5 μm to 100 μm, for example, it may be 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, and preferably 10 μm to 30 μm.

[0069] The upper adhesive film layer 2 may be colorless and transparent or a colored adhesive film added with the infrared reflective powder and color toner of this application. That is, a colored adhesive film can be obtained by adding infrared reflective powder and color toner to a colorless and transparent adhesive film. The material of the upper adhesive film layer 2 may be EVA, POE, PVB, SGP, etc.

[0070] As the second type of colored glass layer, the colored glass layer includes a surface glass layer and an upper adhesive film layer arranged in a stacked manner in sequence. The upper adhesive film layer is closer to the battery chip layer than the surface glass layer. The upper adhesive film layer contains infrared reflective powder and color toner, that is, the upper adhesive film layer described above is a colored adhesive film. In such a colored glass layer, the reflection effect may be adjusted by adjusting the toner concentration in the upper adhesive film layer, or the reflection effect may be adjusted by adjusting the thickness of the upper adhesive film layer within a predetermined range. In the upper adhesive film layer, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color toner is 0.1% to 20%, preferably 1% to 5%. The thickness of the upper adhesive film layer is 0.1 mm to 0.7 mm, for example, it may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm.

[0071] By including infrared reflective powder and color-developing toner in the colored glass layer, while reducing the temperature of the solar module, various colors can be expressed on the solar module. Thereby, while imparting color to the solar module, it is ensured that the solar module has high efficiency.

[0072] In the present application, the battery chip layer may include a plurality of battery chips arranged in an array at equal intervals in sequence. The above-mentioned battery chips may be general single-crystalline or polycrystalline battery chips, or other types of battery chips. The number of grid lines of the battery chips may be any number from 2 to 30. Also, it may be a back contact type battery chip, a roof plate-like stacked structure battery chip or a metal wrap-through structure battery chip and the corresponding connection structure.

[0073] In the present application, both the first lower flexible adhesive film layer and the second lower flexible adhesive film layer are each selected from an EVA film layer, a POE film layer, a PVB film layer or an SGP film layer.

[0074] Specifically, the first lower flexible adhesive film layer and the second lower flexible adhesive film layer may be the same film layer or different film layers.

[0075] In the present application, the reinforcing adhesive film layer is any one of a PET film layer, a PU film layer, a nylon layer or a metal screen layer.

[0076] The back glass layer may be transparent glass, or may be one with the inner surface painted with a black glaze layer, or may be one with a reticular black glaze layer printed in the gaps of the battery cells by screen printing. The thickness of the back glass layer may be 1 to 16 mm.

[0077] Furthermore, the colored solar module described in the present application may further include ribbons, bus bars, connection boxes for connecting battery cells to each other to conduct current, cables for attaching the module, and the like.

[0078] The present application further provides a colored solar module including any one of the above infrared reflective powders and color developing toners. Specifically, as shown in FIGS. 3 and 4, the colored solar module includes a surface glass layer 1, an upper adhesive film layer 3, a battery chip layer 4, a lower adhesive film layer 9, and a back panel 10 which are sequentially stacked, and the solar module includes an infrared reflective powder and a color developing toner on or within the front radiation receiving side.

[0079] In the present application, the front radiation receiving side is the region above the light receiving side of the battery chip layer. "Including an infrared reflective powder and a color developing toner on or within the front radiation receiving side" includes various cases where the infrared reflective powder and the color developing toner are located on the air side of the surface glass layer (i.e., the side of the surface glass layer away from the battery chip layer), the non-air side of the surface glass layer (i.e., the side of the surface glass layer close to the battery chip layer), both sides of the upper adhesive film layer, within the upper adhesive film layer, and the like.

[0080] In a specific embodiment, the colored solar module has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm.

[0081] In a specific embodiment, that the colored solar module has a high transmittance to light with wavelengths ranging from 300 nm to 1100 nm means that the transmittance to light with wavelengths ranging from 300 nm to 1100 nm is at least 50%, for example, it may be 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc.

[0082] In a specific embodiment, that the colored solar module has a high reflectivity to infrared light with wavelengths ranging from 1100 nm to 5000 nm means that the reflectivity to infrared light with wavelengths ranging from 1100 nm to 5000 nm is at least 25%, for example, it may be 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, etc.

[0083] As those skilled in the art can understand, when other conditions are constant, the content of the infrared reflective powder and the reflectivity of the colored solar module to infrared light with wavelengths ranging from 1100 nm to 5000 nm are in a positive correlation. By adjusting the content of the infrared reflective powder contained in the solar module, the reflectivity of the colored solar module to infrared light with wavelengths ranging from 1100 nm to 5000 nm can be adjusted to meet different actual requirements.

[0084] In a specific embodiment, as shown in FIG. 3, the colored solar module includes a surface glass layer 1, a color glaze layer 2, an upper adhesive film layer 3, a battery chip layer 4, a lower adhesive film layer 9, and a back panel 10 that are sequentially laminated. The color glaze layer 2 contains an infrared reflective powder and a coloring toner, that is, the infrared reflective powder and the coloring toner are located within the color glaze layer 2.

[0085] In a specific embodiment, the colored solar module includes a color glaze layer 2, a surface glass layer 1, an upper adhesive film layer 3, a battery chip layer 4, a lower adhesive film layer 9, and a back panel 10 that are sequentially laminated. The color glaze layer 2 includes an infrared reflective powder and a color toner, that is, the infrared reflective powder and the color toner are located within the color glaze layer 2.

[0086] The color glaze layer 2 may further include other components such as, for example, glass powder.

[0087] In a specific embodiment, the color glaze layer 2 adheres to both sides of the surface glass layer 1 (which may be the air side or the non-air side of the surface glass layer), and is formed by any one of the high-temperature inks or low-temperature inks described above in the present application. The color glaze layer 2 can be obtained, for example, by adhering a high-temperature ink or a low-temperature ink containing an infrared reflective powder and a color toner to the glass by screen printing or spray coating, and then sintering in a temperature range of 500 to 800°C.

[0088] The lower adhesive film layer 9 may be any type of adhesive film layer known in the art. For example, it may be a single-layer flexible adhesive film layer. For example, it may be any one of an EVA film layer, a POE film layer, a PVB film layer, or an SGP film layer. As described above, as shown in FIG. 1, it may include a first lower flexible adhesive film layer 5, a reinforcing adhesive film layer 6, and a second lower flexible adhesive film layer 7 that are sequentially laminated and arranged.

[0089] The back panel 10 may be any type of back panel known in the art. For example, it may be a back panel made of a glass material, that is, the glass layer shown in FIG. 1 above. It may also be a back panel made of a polymer material.

[0090] In a specific embodiment, as shown in FIG. 4, the colored solar module includes a surface glass layer 1, an upper adhesive film layer 3, a battery chip layer 4, a lower adhesive film layer 9, and a back panel 10 that are sequentially laminated. The upper adhesive film layer 3 contains infrared reflective powder and color toner, that is, the infrared reflective powder and color toner are located within the upper adhesive film layer 3. The infrared reflective powder and color toner are added to the upper adhesive film layer 3 by a method known in the art.

[0091] In such a colored solar module, the reflection effect may be adjusted by adjusting the content of the infrared reflective powder in the upper adhesive film layer 3. Also, the reflection effect may be adjusted by adjusting the thickness of the upper adhesive film layer 3 within a predetermined range. Furthermore, in order to ensure the uniformity of the reflective powder and color toner, the upper adhesive film 3 may have a two-layer structure. One layer is a layer containing infrared reflective powder and color toner, and its thickness may be 0.05 - 0.3 mm. The other layer is a transparent layer that does not contain reflective powder and color toner so as to meet the requirements of sealing and insulation, and its thickness may be 0.2 - 1 mm. These two layers form the upper adhesive film by co-extrusion.

[0092] In a specific embodiment, in the upper adhesive film layer 3, the mass ratio of the infrared reflective powder is 0.1% - 30%, preferably 5% - 15%, and the mass ratio of the color toner is 0.1% - 20%, preferably 1% - 5%.

[0093] In a specific embodiment, the thickness of the upper adhesive film layer 3 is 0.1 mm - 0.7 mm, for example, it may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm.

[0094] Examples Example 1 10 g of ZnS(38 nm) / Ag(10 nm) / ZnS(40 nm), 3 g of commercially available blue pearl powder, 67 g of commercially available glass powder, and 20 g of organic solvent varnish were thoroughly stirred and mixed, and further uniformly mixed by three rolls to produce high-temperature ink.

[0095] The infrared reflective powder of ZnS / Ag / ZnS was manufactured by the following method. Based on a one-sided polished Si(111) wafer and a K9 glass as a 2-mm-thick plate, a box-type vacuum coater was used, and ZnS was deposited by electron beam evaporation. After the deposition of the first layer of ZnS, high-purity silver particles were used as the evaporation source, and in the box-type vacuum coater, an Ag thin film layer was manufactured by resistance thermal evaporation. Subsequently, the third layer of ZnS film was manufactured in the same manner as the first layer of ZnS. After manufacturing, the multilayer film was peeled off from the base and pulverized to obtain the infrared reflective powder.

[0096] The mixed high-temperature ink was printed on the inner surface of the low-iron glass by screen printing, spray coating, roll coating, etc., and baked in an infrared heating tunnel furnace at 150 to 250 °C to form a color glaze layer on the inner layer of the low-iron glass. The thickness of the low-iron glass was 3.2 mm, and the thickness of the color glaze layer was 20 μm. After baking, transparent colored glass was obtained by strengthening using a strengthening furnace.

[0097] The colored glass, the welded battery cell matrix, adhesives such as EVA, black PET, and POE films, and the back glass were laminated, and laminated at 140 to 150 °C for about 20 min in a laminator to manufacture a colored solar module.

[0098] The reflectance graph obtained by measuring the manufactured colored solar module is shown in Figure 2. In the blue wavelength range, it has a reflectance of about 30%. In the infrared wavelength range of 1100 nm or more, it has an average reflectance of 53%. In the infrared wavelength range of 1700 nm or more, it has an average reflectance of more than 80%. Since the infrared light received by the module decreased, it was found that in the same environment, the operating temperature of the measured module was 3 to 10 °C lower than that of a general module.

[0099] Examples 2 to 4 In Examples 2 to 4, colored solar modules were manufactured in the same manner as in Example 1, except that the mass of the infrared reflective powder was different.

[0100] Specifically, in Example 2, the mass of the infrared reflective powder was 5 g. In Example 3, the mass of the infrared reflective powder was 15 g. In Example 4, the mass of the infrared reflective powder was 3 g.

[0101] Examples 5 - 6 In Examples 5 - 6, a colored solar module was manufactured in the same manner as in Example 1, except that the type of the infrared reflective powder was different.

[0102] Specifically, in Example 5, the infrared reflective powder was SiO 2 (38 nm) / Ag(10 nm) / TiO 2 (40 nm). In Example 6, the infrared reflective powder was Al 2 O 3 (38 nm) / Ag(10 nm) / Al 2 O 3 (40 nm).

[0103] Example 7 9 g of ZnS(38 nm) / Ag(10 nm) / ZnS(40 nm), 1 g of a red multi - layer oxide nanotoner, 90 g of n - butyl acrylate, and a thermal initiator (azobisisobutyronitrile) were thoroughly stirred and mixed to produce a low - temperature ink.

[0104] The red multi - layer oxide nanotoner was produced by the following method. Using K9 glass as a base, a release agent was applied to the surface of the glass, and a multi - layer oxide film was formed by depositing TiO 2 and SiO 2 materials in this order in a film form on the base using a vacuum coater and electron beam deposition. After the deposition was completed, release and pulverization were performed to obtain the red multi - layer oxide nanotoner.

[0105] The mixed low-temperature ink was printed on the inner surface of the low-iron glass by screen printing, spray coating, roll coating or the like, and baked in an infrared heating tunnel furnace at 150 to 250 °C to form a color glaze layer on the inner layer of the low-iron glass. The thickness of the low-iron glass was 2 mm, and the thickness of the color glaze layer was 25 μm. After baking, strengthening was carried out using a strengthening furnace, and heat curing was carried out by an infrared heating tunnel furnace to obtain transparent colored glass.

[0106] The colored glass, the welded battery cell matrix, EVA, a black PET, an adhesive film such as POE, and the back glass were laminated, and laminated at 140 to 150 °C for about 20 min in a laminator to manufacture a colored solar module.

[0107] Example 8 In Example 8, a colored solar module was manufactured in the same manner as in Example 7 except that the mass of the infrared reflective powder was different.

[0108] Specifically, in Example 8, the mass of the infrared reflective powder was 4 g.

[0109] Examples 9 to 10 In Examples 9 to 10, a colored solar module was manufactured in the same manner as in Example 7 except that the type of the infrared reflective powder was different.

[0110] Specifically, in Example 9, the infrared reflective powder was SiO 2 (38 nm) / Ag(10 nm) / TiO 2 (40 nm). In Example 10, the infrared reflective powder was Al 2 O 3 (38 nm) / Ag(10 nm) / Al 2 O 3 (40 nm).

[0111] Example 11 In Example 11, it is different from Example 1 in that ZnS / Ag / ZnS and blue pearl powder do not exist as the color glaze layer, but are located in the upper adhesive film layer, and the content of the blue pearl powder is different.

[0112] Specifically, 10 g of ZnS / Ag / ZnS, 5 g of commercially available blue pearl powder, and 85 g of EVA particles and additives were mixed, heated and melted, then stirred uniformly, and an EVA colored adhesive film layer with a thickness of 0.1 mm was extruded and formed. The colored adhesive film layer and a transparent EVA adhesive film layer with a thickness of 0.4 mm were co-extruded to form the upper adhesive film layer (the thickness is the same as that of the 0.5 mm EVA upper adhesive film layer in Examples 1 to 10).

[0113] Comparative Example 1 Comparative Example 1 is different from Example 1 in that the manufactured high-temperature ink does not contain infrared-reflecting powder.

[0114] Specifically, 3 g of blue pearl powder, 67 g of glass powder, and 30 g of organic solvent varnish were sufficiently stirred and mixed, and further uniformly mixed by three rolls to produce a high-temperature ink.

[0115] The specific recipes of the inks in the above examples and comparative examples, as well as the operating temperatures of the colored solar modules manufactured in each example and comparative example and the average infrared reflectance at 1100 nm or more are shown in Table 1.

[0116]

Table 1

[0117] In the specification described here, a large amount of details have been explained. However, it can be understood that the embodiments of the present invention can be implemented even without these details. Here, there are also known methods, structures, and technologies that are not described in detail so as not to cause confusion in understanding this specification.

[0118] In the claims, the reference signs in parentheses shall not be construed as limiting the claims. The term "comprising" does not exclude the presence of elements or steps not recited in the claims. The terms "a" or "one" preceding an element do not exclude the presence of a plurality of such elements. The present invention can be implemented by hardware including a plurality of different elements and a computer programmed as appropriate. In the claims where a plurality of units of a device are recited, some of these devices may specifically be implemented by the same hardware. The terms such as first, second, third, etc. are not used to indicate any order. These terms may be construed as names.

[0119] Finally, it should be noted that the above embodiments are merely for explaining the technical means of the present invention and do not limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can change the technical means described in each of the above embodiments or perform equivalent substitution on some technical features, and it can be understood that the essence of the corresponding technical means does not deviate from the spirit and scope of the technical means of each embodiment of the present invention due to these changes or substitutions.

Explanation of Reference Signs

[0120] 1 Surface glass layer 2 Color glaze layer 3 Upper adhesive film layer 4 Battery chip layer 5 First lower flexible adhesive film layer 6 Reinforcing adhesive film layer 7 Second lower flexible adhesive film layer 8 Back glass layer 9 Lower adhesive film layer 10 Back panel

Claims

1. An ink containing an infrared reflective powder and a color developing toner, wherein in the ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color developing toner is 0.1% to 20%, preferably 1% to 5%.

2. The ink according to claim 1, wherein the infrared reflective powder has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm.

3. The ink according to claim 1, wherein the infrared reflective powder is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm, and the color developing toner is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm.

4. The ink according to claim 1, wherein the infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer sequentially stacked, the thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm.

5. The infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO ２ / Ag / TiO ２ , Al ２ O ３ / Ag / Al ２ O ３ The ink according to claim 4, characterized in that it is one or more selected from ZnO / Ag / ZnS, and preferably ZnS / Ag / ZnS.

6. The ink according to claim 1, wherein the ink is a high-temperature ink composed of an infrared reflective powder, a color developing toner, glass powder, and an organic solvent.

7. In the high-temperature ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, the mass ratio of the color developing toner is 0.1% to 20%, preferably 1% to 5%, the mass ratio of the glass powder is 30% to 70%, and the mass ratio of the organic solvent is 10% to 40%. The ink according to claim 6.

8. The ink according to claim 1, wherein the ink is a low-temperature ink composed of an infrared reflective powder, a color developing toner, and an organic solvent.

9. In the low-temperature ink, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, the mass ratio of the color developing toner is 0.1% to 20%, preferably 1% to 5%, and the mass ratio of the organic solvent is 70% to 99.9%. The ink according to claim 8.

10. A colored solar module, characterized by comprising a colored glass layer, a battery chip layer, a first lower flexible adhesive film layer, a reinforcing adhesive film layer, a second lower flexible adhesive film layer, and a back glass layer, which are sequentially stacked.

11. The colored glass layer includes a surface glass layer, a color glaze layer, and an upper adhesive film layer that are sequentially stacked, and the upper adhesive film layer is closer to the battery chip layer than the surface glass layer and the color glaze layer. The colored solar module according to claim 10.

12. The color glaze layer includes an infrared reflective powder and a coloring toner. In the color glaze layer, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the coloring toner is 0.1% to 20%, preferably 1% to 5%. The colored solar module according to claim 11.

13. The thickness of the color glaze layer is 5 μm to 100 μm, preferably 10 μm to 30 μm. The colored solar module according to claim 11.

14. The color glaze layer is formed by the ink according to any one of claims 1 to 9. The colored solar module according to claim 11.

15. The colored glass layer includes a surface glass layer and an upper adhesive film layer that are sequentially stacked. The upper adhesive film layer is closer to the battery chip layer than the surface glass layer. The upper adhesive film layer includes an infrared reflective powder and a coloring toner. In the upper adhesive film layer, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the coloring toner is 0.1% to 20%, preferably 1% to 5%. The colored solar module according to claim 10.

16. The infrared reflective powder has a high transmittance to light with a wavelength of 300 nm to 1100 nm and a high reflectance to infrared light with a wavelength of 1100 nm to 5000 nm. The colored solar module according to claim 12 or 15.

17. The infrared reflective powder is a transparent or semi-transparent sheet with a thickness of 0.5 μm to 5 μm, and the coloring toner is a transparent or semi-transparent sheet with a thickness of 0.5 μm to 5 μm. The colored solar module according to claim 12 or 15.

18. The infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked, the thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm. The colored solar module according to claim 12 or 15, characterized in that

19. The infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO ２ / Ag / TiO ２ , Al ２ O ３ / Ag / Al ２ O ３ The colored solar module according to claim 17, characterized in that it is one or more selected from ZnO / Ag / ZnS, and preferably ZnS / Ag / ZnS.

20. A colored solar module comprising a surface glass layer, an upper adhesive film layer, a battery chip layer, a lower adhesive film layer, and a back panel that are sequentially stacked, and including an infrared reflective powder and a color toner on or within the front radiation receiving side.

21. The colored solar module according to claim 20, characterized in that it has a high transmittance for light with a wavelength of 300 nm to 1100 nm and a high reflectance for infrared light with a wavelength of 1100 nm to 5000 nm.

22. The colored solar module according to claim 20, characterized in that the infrared reflective powder is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm, and the color toner is a transparent or translucent sheet with a thickness of 0.5 μm to 5 μm.

23. The infrared reflective powder includes a first dielectric film layer, a metal film layer, and a second dielectric film layer that are sequentially stacked, the thickness of the first dielectric film layer is 10 nm to 100 nm, the thickness of the metal film layer is 3 nm to 30 nm, and the thickness of the second dielectric film layer is 10 nm to 100 nm. The colored solar module according to claim 20, characterized in that

24. The infrared reflective powder is one or more selected from ZnS / Ag / ZnS, SiO ２ / Ag / TiO ２ , Al ２ O ３ / Ag / Al ２ O ３ The colored solar module according to claim 23, characterized in that it is one or more selected from ZnO / Ag / ZnS, and preferably ZnS / Ag / ZnS.

25. The colored solar module according to claim 20, characterized in that it includes a color glaze layer provided between the surface glass layer and the upper adhesive film layer or on the air side of the surface glass layer, and the color glaze layer includes an infrared reflective powder and a color toner.

26. The colored solar module according to claim 25, characterized in that the color glaze layer is formed by the ink according to any one of claims 1 to 9.

27. The colored solar module according to claim 20, characterized in that the upper adhesive film layer includes an infrared reflective powder and a color toner.

28. In the upper adhesive film layer, the mass ratio of the infrared reflective powder is 0.1% to 30%, preferably 5% to 15%, and the mass ratio of the color toner is 0.1% to 20%, preferably 1% to 5%. The colored solar module according to claim 27, characterized in that.

29. The colored solar module according to claim 20, characterized in that the lower adhesive film layer includes a first lower flexible adhesive film layer, a reinforcing adhesive film layer, and a second lower flexible adhesive film layer that are sequentially laminated and arranged.

Images