A color ink, a color solar module and a method for manufacturing the same

Abstract

The application discloses a kind of color ink, color solar module and its preparation method, it relates to solar module technical field.A kind of color ink, comprising: infrared reflective powder, color developing color powder, fluorine resin and organic solvent.A kind of color solar module is made using the above-mentioned color ink, color solar module is sequentially included from top to bottom: transparent fluoroplastic panel, first encapsulation adhesive film, solar cell piece, second encapsulation adhesive film and backboard, the color ink is printed on the transparent fluoroplastic panel.And a kind of preparation method of color solar module.Adopt the technical scheme color solar module has the advantages of light weight, beautiful and easy to customize, printing effect is good, high transmittance.

Description

Technical Field

[0001] This invention relates to the field of solar module technology, specifically to a colored ink, a colored solar module, and a method for preparing the same. Background Technology

[0002] With the widespread installation of ground-mounted power stations, land resources are becoming increasingly saturated due to their limited availability. Installing solar panels on building rooftops, balconies, and walls can both generate electricity for self-consumption, reducing energy consumption, and increase revenue from power generation.

[0003] Conventional photovoltaic modules, with their dark blue or black molding, appear jarring and unsightly when integrated into building installations, disrupting the overall harmony of the architecture and failing to meet people's aesthetic demands. Some existing solar modules utilize printed colored glass or colored films for encapsulation to enhance their appearance, but this significantly increases their weight, making them difficult to fit into older building walls and potentially damaging the building's overall structure. Furthermore, the uniformity of color printing or the dissolution of the colored film greatly reduces the light transmittance of the solar modules, significantly impacting their output power. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a colored ink, a colored solar module, and a method for preparing the same. The colored solar module has the advantages of being lightweight, aesthetically pleasing and easy to customize, having good printing effects, and high light transmittance.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a colored ink, comprising: infrared reflective powder, color developing powder, fluororesin, and organic solvent.

[0006] The present invention further comprises, in the colored ink:

[0007] The infrared reflective powder accounts for 5%-30% of the total mass.

[0008] The colorant powder comprises 3%-25% by mass.

[0009] The fluoropolymer resin comprises 10%-35% by mass.

[0010] The organic solvent accounts for 0.1%-10% of the total mass.

[0011] A second aspect of the present invention also provides a colored solar panel made of colored ink as described above;

[0012] The colored solar panel comprises, from top to bottom: a transparent fluoroplastic panel, a first encapsulating film, a solar cell, a second encapsulating film, and a backsheet, wherein the colored ink is printed on the transparent fluoroplastic panel.

[0013] In a further embodiment of the present invention, the transparent fluoroplastic panel is made of ETFE or PVF material, and the thickness of the transparent fluoroplastic panel is 0.025mm-0.050mm.

[0014] In a further embodiment of the present invention, the back sheet is configured as a honeycomb core composite back sheet, the honeycomb core composite back sheet comprising: a honeycomb columnar mother plate and cover plates disposed on both sides of the honeycomb columnar mother plate.

[0015] The present invention is further characterized in that a polyolefin film is laminated on the surface of the cover plate.

[0016] A third aspect of the present invention also provides a method for preparing a colored solar panel, which includes the following steps:

[0017] S1: Prepare materials: the transparent fluoroplastic panel, the solar cell, the first encapsulating film, the second encapsulating film, and the backplate;

[0018] S2: Perform corona treatment on the transparent fluoroplastic panel;

[0019] S3: Spray a coating curing agent onto the surface of the transparent fluoroplastic panel;

[0020] S4: The backplate, the second encapsulating film, the solar cell, the first encapsulating film, and the transparent fluoroplastic panel are stacked sequentially from bottom to top to form a first component, and then the first component is placed into a laminator for lamination and encapsulation.

[0021] S5: Use laser cutting to cut the edges of the first component neatly;

[0022] S6: Using the colored ink, the pre-set pattern is printed onto the transparent fluoroplastic panel using a printer;

[0023] S7: Heat and bake the first component.

[0024] In a further embodiment of the present invention, the coating curing agent is polyisocyanate.

[0025] The present invention further includes step S4 as follows: performing EL testing on the first component before placing the first component into the laminator for lamination and packaging.

[0026] The present invention further specifies that in step S7, the baking temperature is 50℃-70℃ and the baking time is 15 minutes-30 minutes.

[0027] After adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0028] 1. In this invention, the colored ink comprises: infrared reflective powder, color-developing pigment, fluororesin, and organic solvent. The infrared reflective powder is a powder capable of emitting infrared light to reduce heat accumulation, prevent excessively high operating temperatures of the solar panel, and ensure the conversion efficiency of the solar panel. The color-developing pigment enables the colored ink to display color. The fluororesin in the colored ink enhances its adhesion, allowing the colored ink to adhere well to the transparent fluoroplastic panel of the solar panel, thus realizing the production of a colored solar panel.

[0029] 2. In this invention, a colored solar panel is made with colored ink. The color and pattern of the solar panel are customized by printing the colored ink onto a transparent fluoroplastic panel. The colored ink printing achieves the colorization, aesthetics, and personalization of the solar panel, which not only does not significantly increase the weight of the solar panel but also avoids problems with its installation. This prevents damage to the installation wall or even the overall structure of the building due to excessive weight of the solar panel, ensuring the safety of the solar panel installation. Moreover, it has minimal impact on the light transmittance of the transparent fluoroplastic panel, which can reach 95%, ensuring the working conversion efficiency of the solar panel. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the colored solar module of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1. Transparent fluoroplastic panel; 2. First encapsulating film; 3. Solar cell; 4. Second encapsulating film; 5. Cover plate; 6. Honeycomb columnar mother plate. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0035] Example 1:

[0036] This embodiment relates to a colored ink, comprising: infrared reflective powder, color developing powder, fluororesin, and organic solvent.

[0037] Colored inks are used in the production of colored solar cells. Infrared reflective powder, which emits infrared light, reduces heat accumulation, prevents excessively high operating temperatures of the solar modules, and ensures their conversion efficiency. As a preferred embodiment, the infrared reflective powder comprises 5%-30% of the colored ink by mass, for example, 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%, and 30%.

[0038] The color developing pigment can be any common color developing pigment in the art, such as a multilayer oxide composed of metal oxides such as titanium, aluminum, silicon, tin, zirconium, and zinc; or a multilayer structure formed by TiO2 and natural or synthetic mica, producing different colors through optical interference; or a multilayer oxide with micro-nano structure characteristics. As a preferred embodiment, the mass percentage of the color developing pigment in the colored ink is 3%-25%, for example, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, or 25%.

[0039] Fluoropolymer in colored inks enhances their adhesion, allowing them to adhere better to the transparent fluoroplastic panel 1 of the solar module, thus enabling the fabrication of colored solar panels. As a preferred embodiment, the mass percentage of fluoropolymer in the colored ink is 10%-35%, for example, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, or 35%. The mass percentage of organic solvent in the colored ink is 0.1%-10%.

[0040] Example 2:

[0041] This embodiment relates to a colored solar panel, made using the colored ink described in Embodiment 1, such as... Figure 1 As shown, the colored solar panel, from top to bottom, includes: a transparent fluoroplastic panel 1, a first encapsulating film 2, solar cells 3, a second encapsulating film 4, and a backsheet.

[0042] By printing colored ink onto a transparent fluoroplastic panel 1, the color and pattern of the solar module can be customized, making the solar module more aesthetically pleasing and harmonious when installed on a building. Personalization is also possible to meet individual user needs. Because the colored ink contains fluororesin of the same polarity as the transparent fluoroplastic panel 1, the colored ink adheres well to the panel, ensuring printing effect and quality, and preventing the colored ink from easily peeling off.

[0043] Color printing with colored inks enables the solar modules to be colored, aesthetically pleasing, and personalized. This not only avoids significantly increasing the weight of the solar modules but also prevents installation problems, thus avoiding damage to the mounting wall or even the overall structure of the building due to excessive weight, ensuring the safety of the solar module installation. Furthermore, it has minimal impact on the light transmittance of the transparent fluoroplastic panel 1, which can reach 95%, ensuring the working conversion efficiency of the solar modules.

[0044] In this embodiment, the transparent fluoroplastic panel 1 is made of ETFE or PVF material, and its thickness is set to 0.025mm-0.050mm. As a preferred embodiment, the first encapsulating film 2 and the second encapsulating film 4 are POE or EVA films, with a thickness set to 0.35mm-0.65mm.

[0045] In this embodiment, the backsheet is a honeycomb composite backsheet, which is much lighter than traditional backsheets, effectively reducing the overall weight of the solar module and improving its installation adaptability. Simultaneously, the honeycomb composite backsheet has high strength, enhancing the overall strength of the solar module. The honeycomb composite backsheet includes a honeycomb columnar mother plate 6 and a cover plate 5. The cover plate 5 is disposed on both sides of the honeycomb columnar mother plate 6 to fix the central honeycomb columnar mother plate 6. Preferably, the honeycomb columnar mother plate 6 is made of PP and ABS materials through extrusion lamination, and the cover plate 5 is composed of PP resin and glass fiber, laminated together.

[0046] In this embodiment, a polyolefin film is laminated on the surface of the cover plate 5 away from the honeycomb columnar mother plate 6 to solve the adhesion problem between the honeycomb core composite backsheet and the second encapsulating film 4, enhance the adhesion between the honeycomb core composite backsheet and the second encapsulating film 4, improve the structural stability of the solar module, and also improve the water vapor transmission rate of the honeycomb core composite backsheet. As a preferred option, the thickness of the polyolefin film is set to 0.1mm-1.0mm.

[0047] Example 3:

[0048] This embodiment relates to a method for preparing a colored solar panel, used to prepare the colored solar panel as described in Embodiment 2, including the following steps:

[0049] S1: Prepare materials such as transparent fluoroplastic panel 1, solar cell 3, first encapsulation film 2, second encapsulation film 4, and backplate.

[0050] S2: Use a corona treatment machine to corona treat the transparent fluoroplastic panel 1 to increase the dyne value of the surface of the transparent fluoroplastic panel 1 and improve the adhesion of the surface of the transparent fluoroplastic panel 1.

[0051] S3: Spray a coating curing agent onto the surface of the transparent fluoroplastic panel 1 to uniformly coat the surface of the transparent fluoroplastic panel 1, forming a wear-resistant and chemically resistant film layer, increasing the hardness, flexibility and weather resistance of the colored ink coating; preferably, the coating curing agent is polyisocyanate.

[0052] S4: The backsheet, second encapsulating film 4, solar cell 3, first encapsulating film 2, and transparent fluoroplastic panel 1 are stacked sequentially from bottom to top to form the first component. Then, the first component is placed on the loading table of the laminator and heated and pressurized for lamination and encapsulation. Preferably, before lamination and encapsulation of the first component, an EL test is performed on the first component. Using the electroluminescence principle of crystalline silicon, a high-resolution infrared camera is used to capture near-infrared images of crystalline silicon. The acquired images are analyzed and processed by image software to detect whether the solar cell module has microcracks, fragments, poor soldering, broken grids, and abnormal phenomena of single cells with different conversion efficiencies. The first component that passes the EL test is selected and then laminated and encapsulated.

[0053] S5: After the first component is cooled after lamination, the edges of the first component are cut neatly using laser cutting.

[0054] S6: Set the image and area to be printed on the computer, convert the RGB image data to CMYK format, and use the color ink described in Example 1 to print the required pattern on the transparent fluoroplastic panel 1.

[0055] S7: The color-printed solar panel is fed into a baking tunnel oven via a conveyor belt for heating and baking, so that the color ink is fixed on the surface of the transparent fluoroplastic panel 1. Preferably, the baking and curing temperature is 50℃-70℃ and the baking time is 15 minutes-30 minutes.

[0056] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A method for preparing a colored solar panel, wherein the colored solar panel is made of colored ink, characterized in that, The colored ink comprises: infrared reflective powder, color developing powder, fluororesin, and organic solvent; in the colored ink: The infrared reflective powder accounts for 5%-30% of the total mass. The colorant powder accounts for 3%-25% of the total mass. The fluoropolymer resin accounts for 10%-35% of the total mass. The organic solvent accounts for 0.1%-10% of the total mass. The colored solar module comprises, from top to bottom: a transparent fluoroplastic panel (1), a first encapsulating film (2), a solar cell (3), a second encapsulating film (4), and a backsheet. The transparent fluoroplastic panel (1) is coated with a coating curing agent layer, and the colored ink is printed on the transparent fluoroplastic panel (1) and the colored ink is located on the coating curing agent layer. The method for preparing the colored solar panel includes the following steps: S1: Materials preparation: the transparent fluoroplastic panel (1), the solar cell (3), the first encapsulating film (2), the second encapsulating film (4), and the backplate; S2: Perform corona treatment on the transparent fluoroplastic panel (1); S3: Spray a coating curing agent onto the surface of the transparent fluoroplastic panel (1); S4: The backplate, the second encapsulating film (4), the solar cell (3), the first encapsulating film (2), and the transparent fluoroplastic panel (1) are stacked from bottom to top to form a first component, and then the first component is placed into a laminator for lamination and encapsulation. S5: Use laser cutting to cut the edges of the first component neatly; S6: Using the colored ink, the set pattern is printed onto the transparent fluoroplastic panel (1) using a printer; S7: Heat and bake the first component.

2. The method for preparing a colored solar module according to claim 1, characterized in that, The transparent fluoroplastic panel (1) is made of ETFE or PVF material, and the thickness of the transparent fluoroplastic panel (1) is 0.025mm-0.050mm.

3. The method for preparing a colored solar module according to claim 2, characterized in that, The back panel is configured as a honeycomb core composite back panel, which includes: a honeycomb columnar mother plate (6) and cover plates (5) disposed on both sides of the honeycomb columnar mother plate (6).

4. The method for preparing a colored solar module according to claim 3, characterized in that, A polyolefin film is laminated on the surface of the cover plate (5).

5. The method for preparing a colored solar module according to claim 1, characterized in that, The coating curing agent is polyisocyanate.

6. The method for preparing a colored solar module according to claim 1, characterized in that, Step S4 further includes: performing EL testing on the first component before placing it into the laminator for lamination and encapsulation.

7. The method for preparing a colored solar module according to claim 1, characterized in that, In step S7: the baking temperature is 50℃-70℃ and the baking time is 15 minutes-30 minutes.

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