A surface color film technology for photovoltaic modules

Abstract

The present application relates to the technical field of photovoltaic module, in particular to a kind of photovoltaic module surface color film technology.The present application achieves the color appearance effect of photovoltaic module by setting white film, wherein the white film is a film with white appearance color.The present application uses the technology of film to help photovoltaic module achieve the effect of color appearance display, uses a white film layer to replace the printing of white ink, then attaches the white film layer on the appearance of photovoltaic module to achieve the purpose of color photovoltaic, and the strength and safety of the module are increased due to the attachment of a film layer, the impact of external force is reduced and alleviated, in general, the production time is reduced, the use of UV ink is reduced, the pattern is easy to replace, the photovoltaic module does not need to be removed, and the film is attached to increase the anti-impact property of photovoltaic module, which can replace the old advertising material, and photovoltaic itself is a green power generator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic modules, IPC classification number: C08L3 / 02, and particularly relates to a photovoltaic module surface color film technology. BACKGROUND

[0002] At present, in the processing and use of photovoltaic billboards and other photovoltaic modules, the method of printing promotional patterns on glass and other materials using UV ink is usually used. However, this pattern printing method needs to use a coating liquid to increase the fastness of the colorant, which increases the cost and production time. In addition, using glass to print UV ink increases the difficulty of production because the glass is heavy and easy to break due to collision. Therefore, many problems may occur in the use of photovoltaic billboards and other photovoltaic modules.

[0003] Patent CN201610568145 provides a protective film for a photovoltaic module frame and a preparation method thereof. The patent provides a formula and a preparation method of a protective film based on a photovoltaic module. The protective film is easy to decompose and environmentally friendly, which can better solve the problem of scratches generated during the production and transportation of the module. In addition, the protective film can be naturally decomposed without manual film tearing. However, this patent mainly solves the material preparation problem of the photovoltaic module protective film and does not better solve the printing problem of UV coating. It cannot help to better print the pattern while improving the overall reliability of the photovoltaic module.

[0004] Patent CN201822209295 provides a photovoltaic module and a UV transfer printing mold for preparation. A plurality of light concentrating units are designed in the pattern layer to achieve the scattering and utilization of the solar tube. UV transfer ink is coated on the substrate layer to display the pattern. However, this patent solves the problem of light intensity of the photovoltaic module, but does not solve the material problem of the substrate layer coated with the ink. Therefore, there are still problems of complex UV ink printing and substrate layer breakage due to collision.

[0005] Therefore, in view of the above problems, it is urgent to develop a photovoltaic module surface color film technology. SUMMARY

[0006] In view of the above problems, the present application provides a photovoltaic module surface color film technology. A white film is provided to achieve the color appearance effect of the photovoltaic module 4. The white film is a thin film with a white appearance color.

[0007] Preferably, the thin film material of the white film is a plastic film with a thickness of 20-400 microns. The mesh test result of the thin film material is 4B.

[0008] Preferably, the structure of the white film from top to bottom is color ink layer 1, white film layer 2, back adhesive layer 3, and the back adhesive layer 3 is pasted on the photovoltaic module 4.

[0009] Preferably, the film technology is that the edited pattern is printed on the white film layer 2 using color ink.

[0010] Preferably, the amount of color ink is controlled at 3-8 CC per square meter, and the thickness of the color pattern layer is controlled at 0.01-0.025 mm.

[0011] Preferably, the amount of color ink is reduced by 20-35% at the dark color part of the pattern compared to the light color part.

[0012] Preferably, the color ink is colored on the white film layer 2 by any of UV printing or screen printing.

[0013] Preferably, the white film layer 2 is pasted on the back adhesive layer 3 by self-adhesive, and the surface of the back adhesive layer 3 is cleaned before pasting.

[0014] Preferably, the self-adhesive is pasted by any of electrostatic attachment and brush adhesive attachment.

[0015] Preferably, the white film layer 2 is selected from any of a plane or an embossed surface.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] (1) The present application uses the film technology to help the photovoltaic module 4 to achieve the effect of color appearance display, uses a white film layer 2 to replace the printing of white ink, and then attaches the white film layer 2 to the appearance of the photovoltaic module 4 to achieve the purpose of color photovoltaic, and the strength and safety of the module are increased due to the attachment of a film, and the impact of external force is reduced and alleviated.

[0018] (2) The surface color film technology of the photovoltaic module 4 in the present application strictly regulates the use amount of ink and the color matching to obtain the maximum light transmittance and color saturation. Since the color is attached to the module on the film, when the pattern is replaced, the photovoltaic module 4 does not need to be removed, but the film can be torn off on site, and a new one can be replaced, achieving the convenience of replacement. Overall, the production time is reduced, the use of UV ink is reduced, the pattern replacement is easy, the photovoltaic module 4 does not need to be removed, the film attachment increases the resistance of the photovoltaic module 4 to external force, and the old advertising material can be replaced, and the photovoltaic itself is a green power generator. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1The structure diagram of the color film for the surface of the photovoltaic module, wherein 1 represents the color ink layer; 2 represents the white film layer; 3 represents the back adhesive layer; and 4 represents the photovoltaic module. DETAILED DESCRIPTION

[0020] The color film for the surface of the photovoltaic module is white, and the color appearance effect of the photovoltaic module 4 is achieved. Specifically, the film is used in the scene where the picture needs to be changed frequently, and is convenient for the photovoltaic module in short-term publicity, festival decoration and the like.

[0021] In an embodiment, the film material of the white film is plastic film with a thickness of 20-400 μm, and the film material has a result of 4B in the grid test.

[0022] In an embodiment, the white film is composed of the color ink layer 1, the white film layer 2, and the back adhesive layer 3 from top to bottom, and the back adhesive layer 3 is attached to the photovoltaic module 4.

[0023] In an embodiment, the film technology is that the edited pattern is printed on the white film layer 2 by color ink. Specifically, the white film layer 2 is used to increase the resistance to external force impact of the photovoltaic module 4.

[0024] In an embodiment, the ink amount of the color ink is controlled to be 3-8 CC per square meter, and the thickness of the color pattern layer is controlled to be 0.01-0.025 mm. Specifically, the white film layer 2 is composed of PVC, PE, PP, PET, ETFE and the like, so that the white film layer 2 has good combination with the UV ink.

[0025] In a preferred embodiment, since the white film layer 2 is used as the substrate, the white UV ink is not needed to be additionally coated, and only the color ink is coated on the basis, so that the use of the UV ink is reduced, and the complexity of the overall process is reduced.

[0026] In an embodiment, the ink amount of the color ink in the printing of the pattern is reduced by 20-35% in the dark color part than in the light color part.

[0027] In a preferred embodiment, the touch amount of the color ink is reasonably controlled and used, so as to maximize the light transmittance of the photovoltaic module 4. When the color thickness is controlled to be 0.01-0.025 mm, the light transmittance is optimal, and the saturation of the color is also optimal.

[0028] In an embodiment, the color ink colors the pattern on the white film layer 2 by any of UV printing or silk screen printing.

[0029] In an embodiment, the white film layer 2 is attached to the back adhesive layer 3 by self-adhesive, and the surface of the back adhesive layer 3 is cleaned with a cleaning liquid before attachment. Specifically, the white film layer 2 can be more easily attached to the back adhesive layer 3 because of the self-adhesive behind the white film layer 2.

[0030] In an embodiment, the self-adhesive is attached by any of electrostatic attachment or brush adhesive attachment. Specifically, the attachment method of the present application is more suitable for the use of the photovoltaic module 4 in a short period and in multiple scenes.

[0031] In an embodiment, the white film layer 2 is selected from any of a flat surface or an embossed surface. Specifically, the white film layer 2 of the present application can also use a white film layer 2 with a frosted effect.

[0032] In a preferred embodiment, the embossed surface can increase the power of the photovoltaic module 4 because of the increase of the light receiving area and the decrease of the light reflectivity. Compared with the light reflection structure and light receiving assembly specially added to the glass material, the present application can achieve the same effect through a simple operation process, which simplifies the production work and is suitable for popularization and use.

[0033] The working principle of the color film technology based on the surface of the photovoltaic module 4 of the present application is as follows: first, color ink is printed on the white film layer, and the white film layer is attached to the back plate adhesive. The photovoltaic module 4 absorbs solar energy and stores energy, converts the stored solar energy into light energy, emits light through the photovoltaic module 4, reflects the pattern of the color ink layer 1 and the white film layer 2, and displays the pattern. When the pattern needs to be replaced, the white film layer 2 can be replaced by tearing it off.

Claims

1. A method for coloring the surface of a photovoltaic module, characterized in that, The application discloses a method for achieving a color appearance effect of a photovoltaic module (4) by setting a white film, wherein the white film is a film with a white appearance color; The film material of the white film is a plastic film with a thickness of 20-400 µm; wherein the film material has a result of 4B in a grid test; The structure of the white film comprises, from top to bottom, a color ink layer (1), a white film layer (2), and a back adhesive layer (3), wherein the back adhesive layer (3) is attached to the photovoltaic module (4); The film attaching method comprises printing a prepared pattern on the white film layer (2) by using color ink; The ink amount of the color ink is controlled to be 3-8 CC per square meter, and the thickness of the color pattern layer is controlled to be 0.01-0.025 mm; The white film layer (2) is attached to the back adhesive layer (3) by using a self-adhesive, and the surface of the back adhesive layer (3) is cleaned by using a cleaning liquid before attachment; The self-adhesive is attached by using any one of an electrostatic attachment method and a brush adhesive attachment method; In the color ink printing, the ink amount of a dark color in the pattern is reduced by 20-35% of the thickness of a light color; The color ink is used to color the pattern on the white film layer (2) by using any one of a UV printing method and a silk screen printing method; The white film layer (2) is selected to be any one of a planar surface and an embossed surface.

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