Preparation method of double-sided double-glass full-color photoelectric functional material used as identification sign

Abstract

The application discloses a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification sign in the field of double-sided double-glass photovoltaic modules, and comprises the following steps: S1, assembling a double-sided crystalline silicon plate, wherein the assembling effect of the double-sided crystalline silicon plate is realized by using a single-crystal double-sided cell piece; during the assembling, the single-crystal double-sided cell piece is installed at the center, photovoltaic energy-harvesting modules are respectively attached to the two sides of the single-crystal double-sided cell piece, the photovoltaic energy-harvesting modules are symmetrically and equidistantly distributed in a matrix on the two sides of the single-crystal double-sided cell piece, and the photovoltaic energy-harvesting modules are electrically connected with the single-crystal double-sided cell piece; and the photovoltaic energy-harvesting modules are connected with the single-crystal double-sided cell piece in a parallel mode. The application adds a full-color micro-layer on the double-sided double-glass photovoltaic module, thereby solving the application scene problem; and the double-glass photovoltaic module with the added full-color micro-layer is used as the material of the identification sign, thereby solving the light utilization problem.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of double-sided double-glass photovoltaic modules, in particular to a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification sign. BACKGROUND

[0002] A full-color micro-layer technology is added to a single-sided crystalline silicon photovoltaic module to form a full-color photoelectric functional material, which has a wide range of application scenarios and can be used as an identification sign.

[0003] Based on the demand for improving power generation, a double-glass double-sided module has been launched on the market, and its most intuitive feature is that the back of the module can also generate electricity. It mainly uses the technology in the field of battery pieces to make the original opaque back electrode into a grid line that is transparent like the front, and then through certain doping means, the back is also made into a PN junction, so as to ensure that the reflected light and scattered light can be normally taken in. Due to the double-sided design, the module can capture light reflected from the ground, especially in high-reflectivity environments such as snow and sand, and the power generation can be significantly improved. The back gain of the module is between 5% and 25%, and the current price of the double-sided module is generally 5 cents more than the front power, which is equivalent to an increase of about 2% to 3%, so it is widely used.

[0004] The prior art has the following problems:

[0005] 1. The existing double-sided double-glass photovoltaic module is not full-color, and cannot be integrated into more scenarios.

[0006] 2. The existing full-color photoelectric functional material used for making identification signs is a single-sided crystalline silicon module, and the utilization rate of light is not high enough.

[0007] 3. If a full-color micro-layer is added to a double-sided double-glass photovoltaic module, the light distribution will be uneven due to the blocking of the battery pieces, which will cause the full-color layer to appear in different brightness zones, affecting the visual effect. SUMMARY

[0008] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0009] The purpose of the present application is to solve the technical problems existing in the background art, and the present application provides a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification sign.

[0010] The present application provides a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification sign, comprising the following steps:

[0011] S1, assembling a double-sided crystalline silicon plate, which uses a single-crystal double-sided cell to achieve the assembly effect of the double-sided crystalline silicon plate.

[0012] S2, high-transparency adhesive film bonding, which bonds a high-transparency adhesive film on the side of the photovoltaic energy harvesting assembly away from the single-crystal double-sided cell.

[0013] S3, processing high-transparency glass backboard, which cuts two groups of high-transparency glass backboards into the same size as the single-crystal double-sided cell, and applies black grids on one side of the two groups of high-transparency glass backboards.

[0014] S4 is a high-transmittance glass backboard fitting step, which fits the high-transmittance glass backboard processed by spraying on the surface of the high-transmittance adhesive film. In the fitting process, the high-transmittance glass backboard with the black grid sprayed on one side is in contact with the surface of the high-transmittance adhesive film and is aligned with the gap of the photovoltaic energy harvesting assembly, so as to realize the blocking effect of the black grid on the monocrystalline double-sided cell at the bottom of the gap of the photovoltaic energy harvesting assembly.

[0015] S5 is a full-color micro-layer spraying step, which sprays a full-color micro-layer on the outer surface of the high-transmittance glass backboard. The content of the full-color micro-layer is customized according to the actual road use requirements, so that the surface of the high-transmittance glass backboard has a full-color identification sign pattern, and the high-transmittance glass backboard has a prompt effect of identification signs.

[0016] S6 is an outdoor gloss oil spraying step, which covers the surface of the full-color micro-layer with outdoor gloss oil. The outdoor gloss oil coating can protect the full-color micro-layer. Since the full-color micro-layer is printed by an inkjet printing method, irregular micro-depressions will be generated on the surface of the full-color micro-layer as the printing ink solidifies. The micro-depressions will produce diffuse reflection under light irradiation, thereby reducing the refractive index of light. The outdoor gloss oil spraying step can fill the micro-depressions on the surface of the full-color micro-layer, so that the outer surface of the outdoor gloss oil tends to be smooth.

[0017] By adopting the above technical scheme, the double-sided lighting method can collect the ground diffuse reflection light without changing the unit lighting area, thereby improving the lighting efficiency.

[0018] Preferably, the double-sided crystalline silicon plate assembling step is adopted. The single-crystal double-sided cell has a plurality of positive contact electrodes on both sides. The single-crystal double-sided cell shell is negative. The positive contact electrodes penetrate the negative shell. The positive contact electrode edge is provided with an insulating ring connected with the negative shell. The positive contact electrode is electrically connected with the photovoltaic energy harvesting assembly, and the negative electrode of the photovoltaic energy harvesting assembly is electrically connected with the negative shell.

[0019] By adopting the above technical scheme, the structure of the insulating ring can prevent the single-crystal double-sided cell from short circuiting, and the structure of the negative shell can reduce the installation difficulty of the photovoltaic collection assembly.

[0020] Preferably, the high-transmittance adhesive film fitting step is adopted. The high-transmittance adhesive film is sprayed with an adhesive on both sides. The adhesive is in contact with the photovoltaic energy harvesting assembly and the high-transmittance glass backboard. The adhesive is an insulating material, and the adhesive fills the gap between the photovoltaic energy harvesting assembly and the single-crystal double-sided cell.

[0021] By adopting the technical scheme, the high-transparency adhesive film is used for filling to ensure the insulation and sealing and the surface flatness of the photovoltaic energy collection component, and then the stable adhesion can be ensured when the high-transparency glass backboard is adhered subsequently.

[0022] Preferably, the high-transparency glass backboard processing step is that the black grids on the two high-transparency glass backboards are mirror-symmetrical, and the mirror-symmetrical black grids are in contact with the adhesive when the high-transparency adhesive film is adhered.

[0023] By adopting the technical scheme, the black grids can shield the part of the single-crystal double-sided cell that can be directly irradiated by sunlight, so that the overheat of the cell is avoided.

[0024] Preferably, the full-color micro-layer spraying step is that the high-transparency glass backboard surface is processed by a spraying printer, and the high-transparency glass backboard needs to be driven when the spraying printer sprays the high-transparency glass backboard, so that the above multi-layer structure is kept stable during the driving by the high-transparency adhesive film and the adhesive.

[0025] By adopting the technical scheme, the multi-layer structure is connected stably by the high-transparency adhesive film and the adhesive, so that the dislocation between the multi-layer structure is avoided during the driving.

[0026] Preferably, the outdoor light oil spraying step is that the light oil surface is dried and solidified after the light oil is sprayed, and the outer end surface of the light oil is polished after the light oil is solidified, so that the micro-depressions generated in the solidification process of the light oil are eliminated, and the flexible polishing structure including but not limited to a wool wheel is used when the light oil surface is polished.

[0027] By adopting the technical scheme, the flatness of the light oil surface can be improved by the flexible polishing structure.

[0028] In summary, the present application has at least one of the following beneficial effects:

[0029] The full-color micro-layer technology is used to add a full-color micro-layer on the double-glass double-sided photovoltaic module, and the double-sided full-color photoelectric functional material is used as a raw material of an identification sign. R, G, B (0, 0, 0) or C, M, Y, K (0, 0, 0, 100) are defined as the color of the black grid, and the black grid is printed on the inner side of the double-glass according to the interval of the cell and the angle of light irradiation (the double-glass double-sided full-color photoelectric functional material is placed vertically to the ground), which ensures the uniform distribution of light, so that the bright and dark areas of the full-color micro-layer are uniform, and the problem of poor visual effect is solved. In order to protect the full-color micro-layer, the outdoor light oil is coated on the surface of the full-color micro-layer to prolong the service life of the full-color photoelectric functional material. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0031] Figure 1 A structure schematic diagram of a double-sided crystal silicon plate and a glass back plate combined mode of a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification signboard according to the present application;

[0032] Figure 2 A schematic diagram of a glass back plate bonding process in the embodiments of the present application;

[0033] Figure 3 A schematic diagram of a double-sided crystal silicon plate in the embodiments of the present application;

[0034] Figure 4 A schematic diagram of a double-sided battery in the embodiments of the present application;

[0035] Figure 5 A distribution diagram of a photovoltaic energy harvesting component on a double-sided crystal silicon plate in the embodiments of the present application;

[0036] Figure 6 A schematic diagram of a high-transparency glass back plate surface in the embodiments of the present application;

[0037] Figure 7 A schematic diagram of a traditional battery in the embodiments of the present application. DETAILED DESCRIPTION

[0038] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The present application will be further described in detail.

[0039] Embodiment One

[0040] As shown in the drawings, in order to solve the existing problems, the present application discloses a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification signboard, which comprises the following steps: Figures 1-7 S1, a double-sided crystal silicon plate assembling step, which uses a single-crystal double-sided battery piece to realize the assembling effect of the double-sided crystal silicon plate. In the assembling process, the single-crystal double-sided battery piece is installed at the center, and photovoltaic energy harvesting components are bonded on both sides of the single-crystal double-sided battery piece. The photovoltaic energy harvesting components are symmetrically and equidistantly distributed in a matrix on both sides of the single-crystal double-sided battery piece, and a plurality of photovoltaic energy harvesting components are electrically connected to the single-crystal double-sided battery piece in a parallel manner.

[0041]

[0042] ​S2 high-transparency adhesive film bonding step, which is bonded with high-transparency adhesive film on the side of the photovoltaic energy harvesting assembly away from the monocrystalline double-sided cell sheet. The high-transparency adhesive film is a transparent adhesive film. Since a plurality of photovoltaic energy harvesting assemblies are distributed at equal intervals in a matrix on the side of the monocrystalline double-sided cell sheet, there are gap grooves with the same width on the surface of the photovoltaic energy harvesting assembly. The depth of the groove is the thickness of the photovoltaic energy harvesting assembly. The high-transparency adhesive film has protrusions with the same depth and the same width as the gap width of the photovoltaic energy harvesting assembly on the side of the high-transparency adhesive film bonded with the photovoltaic energy harvesting assembly. The high-transparency adhesive film bonded on the surface of the photovoltaic energy harvesting assembly can achieve a smooth surface of the photovoltaic energy harvesting assembly. The high-transparency adhesive film fills the gap of the photovoltaic energy harvesting assembly, making the outer surface smooth.

[0043] S3 high-transparency glass backboard processing step, which cuts two groups of high-transparency glass backboards into the same size as the monocrystalline double-sided cell sheet and applies black grids on one side of the two groups of high-transparency glass backboards. The width of the black grid is the width of the gap of the photovoltaic energy harvesting assembly. The black grid is located in alignment with the gap position of the photovoltaic energy harvesting assembly. The spare part of the black grid is aligned with the position of the photovoltaic energy harvesting assembly.

[0044] S4 high-transparency glass backboard bonding step, which bonds the high-transparency glass backboard processed by spraying on the surface of the high-transparency adhesive film. During the bonding process, the side of the high-transparency glass backboard with black grid spraying is in contact with the surface of the high-transparency adhesive film and is aligned with the gap of the photovoltaic energy harvesting assembly during the bonding process, thereby achieving the blocking effect of the black grid on the monocrystalline double-sided cell sheet at the bottom of the gap of the photovoltaic energy harvesting assembly.

[0045] S5 full-color micro-layer spraying step, which sprays a full-color micro-layer on the outer surface of the high-transparency glass backboard. The content of the full-color micro-layer is customized according to the actual road use requirements, thereby making the surface of the high-transparency glass backboard have a full-color identification sign pattern, thereby making the high-transparency glass backboard have a prompt effect of identification signs.

[0046] S6 outdoor gloss oil spraying step, which covers outdoor gloss oil on the surface of the full-color micro-layer. The outdoor gloss oil coating can protect the full-color micro-layer. Since the full-color micro-layer is printed by inkjet printing, irregular micro-depressions will be generated on the surface of the full-color micro-layer as the printing ink solidifies. The micro-depressions will produce diffuse reflection under light irradiation, thereby reducing the refractive index of light. The outdoor gloss oil spraying step can fill the micro-depressions on the surface of the full-color micro-layer, thereby making the outer surface of the outdoor gloss oil smooth, thereby improving the refractive index of light.

[0047] The double-sided lighting method adopted by the present scheme can collect the light reflected by the ground and collected on the back of the photovoltaic collection component, thereby enabling the light energy to be collected after diffuse reflection in actual use of the present scheme, thereby achieving the effect of improving the lighting efficiency without changing the lighting area.

[0048] Meanwhile, the application adds a protective glass backboard on the surface of the photovoltaic assembly and sprays a full-color micro-layer on the surface of the glass backboard, so that the device has a practical road guiding function. Compared with the traditional simple photovoltaic lighting device, the improved device has more practical functions.

[0049] Embodiment two

[0050] As Figures 1-7 shown, in order to solve the existing problems, based on the same concept as in the above embodiment one, the preparation method of the double-sided double-glass full-color photoelectric functional material for identification signs further includes: the step of assembling double-sided silicon plates, which adopts single-crystal double-sided battery pieces with several positive contact electrodes on both sides, the single-crystal double-sided battery piece shell is negative, the positive contact electrode is connected with the photovoltaic energy harvesting assembly, and the negative electrode of the photovoltaic energy harvesting assembly is electrically connected with the negative shell.

[0051] The high-transparency adhesive film fitting step sprays adhesive on both sides of the high-transparency adhesive film, the adhesive contacts the photovoltaic energy harvesting assembly, the adhesive contacts the high-transparency glass backboard, the adhesive is an insulating material, and the adhesive fills the gap between the photovoltaic energy harvesting assembly and the single-crystal double-sided battery piece.

[0052] The high-transparency glass backboard processing step processes two groups of high-transparency glass backboards with mirror-symmetrical black grids, and the mirror-symmetrical black grids contact the adhesive when the high-transparency adhesive film is fitted.

[0053] The step of spraying a full-color micro-layer, which is processed by a spraying printer on the surface of the high-transparency glass backboard, needs to drive the high-transparency glass backboard when the spraying printer sprays the high-transparency glass backboard. At this time, the above multi-layer structure is kept stable by the high-transparency adhesive film and the adhesive during driving.

[0054] The step of spraying outdoor light oil, which is dried and solidified after spraying the light oil, grinds the outer end surface of the light oil after solidification, and then eliminates the micro-depressions generated during the solidification process of the light oil. A flexible grinding structure including but not limited to a wool wheel is used when grinding the surface of the light oil.

[0055] Specific working principle is: through the application can make high-transparency glass backboard outer surface keep smooth, in actual use, the smooth outer surface can make the device surface wind resistance smaller, thereby reducing the speed of light oil loss in the natural environment, at the same time, the smooth surface can make the light refraction rate higher when the driver observes the high-transparency glass backboard, thereby making the identification observed by the driver more bright.

[0056] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a sign, comprising the following steps: S1 is the assembly step of the bifacial crystalline silicon panel. This step uses monocrystalline bifacial solar cells to achieve the assembly effect of the bifacial crystalline silicon panel. During assembly, the monocrystalline bifacial solar cell is installed at the center, and photovoltaic energy harvesting modules are attached to both sides of the monocrystalline bifacial solar cell. The photovoltaic energy harvesting modules are symmetrically distributed in a matrix with equal spacing on both sides of the monocrystalline bifacial solar cell, and several photovoltaic energy harvesting modules are electrically connected to the monocrystalline bifacial solar cell. Several photovoltaic energy harvesting modules are connected to the monocrystalline bifacial solar cell in parallel. In the S2 high-transparency adhesive film lamination step, a high-transparency adhesive film is laminated on the side of the photovoltaic energy-collecting module away from the monocrystalline bifacial solar cell. The high-transparency adhesive film is a transparent film. Several photovoltaic energy-collecting modules are distributed in a matrix at equal intervals on the side of the monocrystalline bifacial solar cell. There are gaps with the same width between adjacent photovoltaic energy-collecting modules, and the depth of the gaps is the thickness of the photovoltaic energy-collecting module. The side of the high-transparency adhesive film that is laminated to the photovoltaic energy-collecting module has protrusions with the same width and depth as the gaps between the photovoltaic energy-collecting modules. By laminating the high-transparency adhesive film onto the surface of the photovoltaic energy-collecting module, the surface of the photovoltaic energy-collecting module can be made flat. The high-transparency adhesive film fills the gaps between the photovoltaic energy-collecting modules, making the outer surface smooth. The S3 step involves processing high-transmittance glass backsheets. In this step, two sets of high-transmittance glass backsheets are cut to the same size as the aforementioned monocrystalline bifacial solar cells. Black grids are then applied to one side of the two sets of high-transmittance glass backsheets. The width of the black grids is the same as the width of the gap in the photovoltaic energy-collecting module. The black grids are aligned with the gap in the photovoltaic energy-collecting module, and the empty parts of the black grids are aligned with the position of the photovoltaic energy-collecting module. The S4 step involves bonding the high-transparency glass backsheet to the surface of the high-transparency adhesive film after the high-transparency glass backsheet has been sprayed. During the bonding process, the side of the high-transparency glass backsheet with the black grid spray coating is in contact with the surface of the high-transparency adhesive film and is aligned with the gap of the photovoltaic energy collection module. This achieves the effect of the black grid blocking the monocrystalline bifacial solar cells at the bottom of the gap of the photovoltaic energy collection module. The S5 spraying full-color micro-coating step involves spraying a full-color micro-coating onto the outer surface of the high-transparency glass back panel. The content of the full-color micro-coating is customized according to the actual road usage requirements, thereby giving the high-transparency glass back panel a full-color sign pattern and thus providing a signage indication effect. The S6 step involves applying outdoor varnish to the surface of the full-color micro-coating layer. This varnish protects the micro-coating layer. Because the micro-coating layer is printed using inkjet printing, irregular micro-depressions are created on its surface as the ink solidifies. These micro-depressions diffuse under light, reducing the refractive index. The outdoor varnish application step fills these micro-depressions, resulting in a smoother surface.

2. The method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a signboard according to claim 1, characterized in that, In the step of assembling the bifacial silicon panel, the monocrystalline bifacial solar cell used in this step has several positive contacts on both sides. The outer shell of the monocrystalline bifacial solar cell is entirely negative. The positive contacts penetrate through the negative outer shell. An insulating ring is provided at the edge of the positive contacts. The insulating ring is connected to the negative outer shell. The positive contacts are electrically connected to the photovoltaic energy harvesting module. The negative electrode of the photovoltaic energy harvesting module is electrically connected to the negative outer shell.

3. The method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a signboard according to claim 2, characterized in that, The high-transparency adhesive film bonding step involves spraying adhesive onto both sides of the high-transparency adhesive film, the adhesive contacting the photovoltaic energy-collecting module, the adhesive contacting the high-transparency glass backplate, the adhesive being an insulating material, and the adhesive filling the gaps between the photovoltaic energy-collecting module and the monocrystalline bifacial solar cell.

4. The method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a signboard according to claim 3, characterized in that, In the process of processing the high-transmittance glass back panel, the black grids on the two sets of high-transmittance glass back panels are mirror-symmetrical. When the mirror-symmetrical black grids are bonded to the high-transmittance adhesive film, the black grids come into contact with the adhesive.

5. The method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a signboard according to claim 4, characterized in that, The step of spraying a full-color micro-coating involves spraying the high-transparency glass back panel onto the surface using a spray printer. The high-transparency glass back panel needs to be moved while being sprayed by the spray printer.

6. The method for preparing a double-sided, double-glass, full-color optoelectronic functional material for use as a signboard according to claim 5, characterized in that, The step of spraying outdoor varnish involves drying and solidifying the varnish surface after spraying. After the varnish solidifies, the outer end face of the varnish is polished to eliminate the micro-depressions generated during the solidification process. A wool wheel flexible polishing structure is used when polishing the varnish surface.

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