Photovoltaic module colorful layer and packaging integrated preparation method

Abstract

The invention discloses a photovoltaic module colorful layer and packaging integrated preparation method, and belongs to the technical field of photovoltaic module preparation, and the method comprises the steps: carrying out the plasma treatment of a photovoltaic module, and enabling the surface dyne value of the photovoltaic module to be greater than 40; synthesizing SiO2 nano-particles through regulation and control of a solvent; dispersing the prepared SiO2 nanoparticles into pure water to prepare a solution; coating the surface of transparent glass or a thin film with the solution, and freeze-drying to obtain a SiO2 nano-particle pattern layer, namely a photonic crystal structure color thin film layer; the surface of the SiO2 nano-particle pattern layer on the photonic crystal structure color film layer is coated with bonding gloss oil; the SiO2 nanoparticles can be directly doped in the bonding gloss oil, and the coated bonding gloss oil is bonded on the photovoltaic front plate. The photonic crystal structure color film layer is adopted, the preparation process is safe and non-toxic, resources are saved, the light utilization rate of the full-color image layer is improved, meanwhile, the image layer is packaged in the inner layer through film covering, and the service life of the full-color photovoltaic assembly is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module preparation, and in particular to a method for preparing a photovoltaic module with a colorful layer and an integrated package. Background Art

[0002] Colored photovoltaic modules help to achieve the integration of photovoltaic components and colorful application environments, and have broad application prospects in the fields of BIPV and mobile energy. There are many ways to add color to photovoltaic modules, such as coloring the battery anti-reflection film, color photovoltaic layer, color packaging film, color front glass, etc. Based on economic and efficiency considerations, the current commercialized color photovoltaic modules are mostly obtained by printing coating, glass coating and other means to obtain colored front glass to achieve the required color; and for the existing printing coating methods of the above products, they usually include inkjet printing and screen printing; inkjet printing is a contactless, pressure-free, and plateless printing and replication technology; it has the characteristics of plateless digital printing and can realize variable information printing. The screen printing plate is mesh-shaped. During printing, the ink on the plate leaks from the through-hole part of the plate to the substrate under the extrusion of the squeegee, thereby completing the printing operation. The above two printing coating methods have their own advantages and are widely used in related industrial fields.

[0003] Existing photovoltaic modules have a variety of colors and can be used in various application scenarios. The current method of coloring photovoltaic modules is to use ink to display the color layer. The thickness of the ink layer will cause some light to be unable to be captured by the photovoltaic module, resulting in light loss and reduced light utilization. At the same time, although the use of external light-curing ink is environmentally friendly, it still has a pungent odor that is harmful to health and has a short service life.

[0004] Therefore, those skilled in the art provide a method for preparing a photovoltaic module with a colorful coating and an integrated package to solve the problems raised in the above background technology. Summary of the invention

[0005] The present invention provides a method for preparing a photovoltaic component with a colorful coating and an integrated packaging, which uses a photonic crystal structure color thin film layer, has a safe and non-toxic preparation process, saves resources, and improves the utilization rate of light for the full-color coating layer. At the same time, the coating layer is encapsulated in an inner layer through lamination, thereby extending the service life of the full-color photovoltaic component.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A method for preparing a photovoltaic module with a colorful layer and an integrated package according to the present invention comprises the following steps:

[0008] S1. Perform plasma treatment on photovoltaic modules. In a dust-free environment of not less than Class 100,000, use cyclone-type high-pressure dust removal equipment and oil-free compressed air to clean and purge the surface of photovoltaic modules. Then perform plasma activation treatment on the cleaned surface of photovoltaic modules. Adjust the plasma nozzle to a height of 10 mm to 20 mm. The surface dyne value of the photovoltaic modules is greater than 40.

[0009] S2. Synthesis of SiO by solvent regulation 2 Nanoparticles; In the entire solvent-controlled particle size reaction system, the volumes of ammonia water, ultrapure water, and ethyl orthosilicate remain unchanged, and the volume of ethanol is changed to achieve the effect of adjusting the size of SiO 2 Effectively control the particle size and prepare SiO 2 The nanoparticles were dispersed in pure water to make a solution;

[0010] S3, coating the solution prepared in step S2 on the surface of transparent glass or film, and obtaining SiO 2 Nanoparticles are layered layer by layer, forming a photonic crystal structure color film layer;

[0011] S4, SiO on the photonic crystal structure color film layer 2 The surface of the nanoparticle layer is coated with bonding varnish; SiO 2 Nanoparticles can be directly mixed into the bonding varnish.

[0012] S5. Bond the adhesive varnish applied in S4 to the photovoltaic front panel.

[0013] Furthermore, the preparation of SiO 2 The preparation process of nanoparticles is as follows: 65-95 mL of ethanol, 8 mL of ammonia water and 3 mL of ultrapure water are added to a 250 mL round-bottom flask in sequence, and heated to react at a water bath temperature of 50 ° C and a stirring speed of 600 r / min; after the temperature stabilizes, 6 mL of ethyl orthosilicate is quickly added to the mixed solution, and a milky white SiO2 is obtained after 2 hours. 2 Nanoparticle suspension; after centrifugation and washing, 0.4 ml of milky white SiO 2 Nanoparticle suspension was added with pure water until the mass concentration was 20 mg / mL solution.

[0014] Furthermore, SiO 2 The particle size of the nanoparticles is 304nm. 2 The solution made of nanoparticles is red.

[0015] Furthermore, SiO 2 The particle size of the nanoparticles is 282nm. 2 The solution made of nanoparticles is orange.

[0016] Furthermore, SiO 2 The particle size of the nanoparticles is 274nm. 2 The solution made of nanoparticles is yellow.

[0017] Furthermore, SiO 2 The particle size of the nanoparticles is 260nm. 2 The solution made of nanoparticles is green.

[0018] Furthermore, SiO 2 The particle size of the nanoparticles is 200nm. 2 The solution made of nanoparticles is blue.

[0019] In the above technical solution, the present invention provides a method for preparing a photovoltaic module with a colorful layer and an integrated package, which has the following beneficial effects:

[0020] 1. Use photonic crystal structural color instead of ink. Photonic crystal (SiO 2 The high light transmittance of the structural color film layer of nanoparticles allows more light to shine on the photovoltaic module, and through the interference of light, the film has a multi-view full-color effect, which not only improves the utilization rate of light by the photovoltaic module, but also saves costs and resources by using structural colors instead of ink.

[0021] 2. Prepare the photonic crystal structure color film layer on transparent glass or film, and bond the glass color surface to the front glass of the photovoltaic module through bonding varnish, that is, encapsulate the color layer, which plays a protective role on the full color layer, and SiO 2 Nanoparticles can be directly doped into the bonding varnish. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below.

[0023] A method for preparing a photovoltaic module with a colorful layer and an integrated package according to an embodiment of the present invention comprises the following steps:

[0024] S1. Perform plasma treatment on photovoltaic modules. In a dust-free environment of not less than Class 100,000, use cyclone-type high-pressure dust removal equipment and oil-free compressed air to clean and purge the surface of photovoltaic modules. Then perform plasma activation treatment on the cleaned surface of photovoltaic modules. Adjust the plasma nozzle to a height of 10 mm to 20 mm. The surface dyne value of the photovoltaic modules is greater than 40.

[0025] S2. Synthesis of SiO by solvent regulation 2Nanoparticles; In the entire solvent-controlled particle size reaction system, the volumes of ammonia water, ultrapure water, and ethyl orthosilicate remain unchanged, and the volume of ethanol is changed to achieve the effect of adjusting the size of SiO 2 Effective control of particle size;

[0026] Preparation of SiO 2 The preparation process of nanoparticles is as follows: 65-95 mL of ethanol, 8 mL of ammonia water and 3 mL of ultrapure water are added to a 250 mL round-bottom flask in sequence, and heated to react at a water bath temperature of 50 ° C and a stirring speed of 600 r / min; after the temperature stabilizes, 6 mL of ethyl orthosilicate is quickly added to the mixed solution, and a milky white SiO2 is obtained after 2 hours. 2 Nanoparticle suspension; after centrifugation and washing, 0.4 ml of milky white SiO 2 Nanoparticle suspension, add pure water until the mass concentration is 20 mg / mL solution;

[0027] SiO 2 The particle size of the nanoparticles is any one of 304nm, 282nm, 274nm, 260nm, and 200nm, among which the SiO 2 The solution made of nanoparticles is red, with a particle size of 282nm SiO 2 The solution made of nanoparticles is orange, with 274nm SiO 2 The solution made of nanoparticles is yellow, 260nm SiO 2 The solution made of nanoparticles is green, 200nm SiO 2 The solution made of nanoparticles is blue; the synthetic particle sizes of SiO are 304nm, 282nm, 274nm, 260nm, and 200nm 2 The nanoparticles required 95 mL, 90 mL, 85 mL, 75 mL, and 65 mL of ethanol, respectively.

[0028] S3, coating the solution prepared in step S2 on the surface of transparent glass or film, and obtaining SiO 2 Nanoparticles are layered layer by layer, forming a photonic crystal structure color film layer;

[0029] S4, SiO on the photonic crystal structure color film layer 2 The surface of the nanoparticle layer is coated with bonding varnish; SiO 2 Nanoparticles can be directly mixed into the bonding varnish.

[0030] S5, bonding the bonding varnish applied in S4 to the photovoltaic front panel.

[0031] This application uses SiO 2The suspension forms a photonic crystal structural color thin film layer, which has media with different dielectric constants, and its basic feature is that it has a photonic band gap (or photonic bandgap). Due to the existence of the photonic band gap, the photonic crystal structural color thin film layer can modulate the propagation of electromagnetic waves. When its band gap falls within the visible light band, that is, within the range of 380-780nm, electromagnetic waves with wavelengths close to it will not be able to enter the photonic crystal structural color thin film layer, but will be selectively reflected by the photonic crystal structural color thin film layer, and then coherent diffraction will be formed on the surface of the periodically arranged photonic crystal structural color thin film layer, and the interference reflected light therein will stimulate the human visual system, which will produce a bright and beautiful structural color effect.

[0032] When observing SiO particles of a certain size from different angles 2 When the nanoparticles form a pattern, the angle of incidence changes, and the wavelength of the structural color changes, and the human eye can observe different colors.

[0033] This application realizes the multi-faceted utilization of light. Part of the light is absorbed by the photovoltaic module through the high transmittance of nanoparticles, and the other part of the light passes through SiO 2 The coherent diffraction of nanoparticles forms a full-color picture with multiple viewing angles. This application not only improves the utilization rate of light by photovoltaic modules, but also saves costs and resources by using structural colors instead of ink. The photonic crystal structural color film layer is made on the inner layer of transparent glass or film, and the color layer is mirrored. It is bonded to the front glass of the photovoltaic module through adhesive varnish, and finally cured by UV to achieve the function of long-term protection of the material.

[0034] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that, for those skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a photovoltaic module with a colorful layer and an integrated package, characterized in that: The following steps are involved: S1. Perform plasma treatment on photovoltaic modules. In a dust-free environment of not less than Class 100,000, use cyclonic high-pressure dust removal equipment and oil-free compressed air to clean and purge the surface of photovoltaic modules. Then perform plasma activation treatment on the cleaned surface of photovoltaic modules, adjust the plasma nozzle to a height of 10mm to 20mm, and the surface dyne value of the photovoltaic modules is greater than 40. S2. Synthesizing SiO2 nanoparticles by solvent regulation; in the entire solvent regulation particle size synthesis reaction system, the volumes of ammonia water, ultrapure water, and tetraethyl orthosilicate remain unchanged, and the volume of ethanol is changed to achieve effective regulation of the SiO2 particle size, and the prepared SiO2 nanoparticles are dispersed in pure water to form a solution; S3, coating the solution prepared in step S2 on a transparent glass or film surface, and obtaining a SiO2 nanoparticle layer by freeze drying, thereby forming a photonic crystal structure color film layer; S4. Coat the surface of the SiO2 nanoparticle layer on the photonic crystal structure color film layer with bonding varnish; the SiO2 nanoparticles can be directly mixed in the bonding varnish. S5, bonding the bonding varnish applied in S4 to the photovoltaic front panel.

2. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The preparation process of SiO2 nanoparticles is as follows: 65-95mL ethanol, 8mL ammonia water and 3mL ultrapure water are added to a 250mL round-bottom flask in sequence, and heated to react under the conditions of a water bath temperature of 50°C and a stirring speed of 600r / min; after the temperature stabilizes, 6mL ethyl orthosilicate is quickly added to the mixed solution, and a milky white SiO2 nanoparticle suspension is obtained after 2 hours; After centrifugation and washing, 0.4 ml of the milky white SiO2 nanoparticle suspension was taken and pure water was added until the mass concentration was 20 mg / mL solution.

3. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The particle size of SiO2 nanoparticles is 304 nm, and the solution made from SiO2 nanoparticles with a particle size of 304 nm is red.

4. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The particle size of SiO2 nanoparticles is 282 nm, and the solution made from SiO2 nanoparticles with a particle size of 282 nm is orange.

5. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The particle size of SiO2 nanoparticles is 274 nm, and the solution made from SiO2 nanoparticles with a particle size of 274 nm is yellow.

6. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The particle size of SiO2 nanoparticles is 260nm, and the solution made from SiO2 nanoparticles with a particle size of 260nm is green.

7. The method for preparing a photovoltaic module with a colorful layer and an integrated package according to claim 1, characterized in that: The particle size of SiO2 nanoparticles is 200nm, and the solution made from SiO2 nanoparticles with a particle size of 200nm is blue.