CN220021137U - Colored photovoltaic panel and photovoltaic module - Google Patents
Colored photovoltaic panel and photovoltaic module Download PDFInfo
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- CN220021137U CN220021137U CN202321258068.0U CN202321258068U CN220021137U CN 220021137 U CN220021137 U CN 220021137U CN 202321258068 U CN202321258068 U CN 202321258068U CN 220021137 U CN220021137 U CN 220021137U
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to a photovoltaic module, which at least comprises a power generation layer and a colored photovoltaic panel; the colored photovoltaic panel includes: a glass panel and a cured colored PVB coating; the colored PVB coating is positioned on the glass panel; according to the utility model, the blue-black photovoltaic module can display beautiful color due to the introduction of the colored PVB coating, so that the aesthetic requirements of building design are met, and the high power generation efficiency can be maintained. The colored PVB coating and the bonding layer are independently arranged, the thickness of the PVB coating is very thin, the photovoltaic module can meet the required color requirement only by adding a small amount of pigment, the pigment is saved, the cost is reduced, the photovoltaic module can be ensured to have higher light transmittance and power generation efficiency, the high light transmittance and color uniformity of the color photovoltaic module are realized at low cost, and the multicolor photovoltaic module can be produced.
Description
Technical Field
The utility model relates to the field of solar photovoltaics, in particular to a colored photovoltaic panel and a photovoltaic module.
Background
PVB adhesive films have been used for 70 years in building curtain wall glass, and the regulations in the automotive and building industries require PVB adhesive films for safety protection. The PVB adhesive film has better safety and stability, and weather resistance and yellowing resistance which are obviously superior to those of EVA and POE adhesive films. The PVB has strong bonding performance with the glass, because a hydrogen bond can be formed between a silicon hydroxyl group (Si-OH) on the surface of the glass and a hydroxyl group (-OH) in the PVB adhesive film, and the bonding strength of the adhesive film and the glass is greatly improved. Therefore, the solar product for the building curtain wall is forced to use a photovoltaic PVB (polyvinyl butyral) adhesive film to replace EVA or POE (polyethylene terephthalate) adhesive packaging photovoltaic modules, the glass knocking value is more than or equal to 7, and longer service life and safety are ensured.
The common photovoltaic module can generate electricity, but is not attractive, the aesthetic design requirement of the building cannot be met, the photovoltaic module is integrated with the building when entering the city, the electricity generation and the attractive appearance are both required, and the electricity generation and the attractive appearance are the rigidity requirement of the photovoltaic curtain wall of the building. The high-light-transmission color coating is coated on the inner side surface of the photovoltaic glass panel, so that the blue-black photovoltaic module can display bright color, and the aesthetic requirement of building design is met.
Different color coatings have great difference in bonding strength with different types of adhesive films due to different resin components, and the bonding strength of conventional POE and EVA adhesive films and glass cannot meet the packaging requirement of a photovoltaic module for curtain walls, so that the color coating and the photovoltaic glass panel with high peeling strength, high light transmittance and excellent weather resistance special for PVB adhesive films are developed, and meanwhile, the requirements of power generation, architectural design aesthetics and safety are met, and the color coating has important significance.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a colored photovoltaic panel and a photovoltaic module.
The utility model adopts the following technical scheme: a photovoltaic module comprising at least a power generation layer and a colored photovoltaic panel; the colored photovoltaic panel includes: a glass panel and a cured colored PVB coating; the colored PVB coating is positioned on the glass panel; the power generation layer of the photovoltaic module is bonded with the colored PVB coating of the colored photovoltaic panel through an adhesive layer. According to the utility model, the blue-black photovoltaic module can display beautiful color due to the introduction of the colored PVB coating, so that the aesthetic requirements of building design are met, and the high power generation efficiency can be maintained.
According to the utility model, the colored PVB coating and the bonding layer (such as a transparent PVB adhesive film) are independently arranged, the thickness of the PVB coating is very thin, and the photovoltaic module can meet the required color requirement by only adding a small amount of pigment, so that the pigment is saved, the cost is reduced, and the photovoltaic module can be ensured to have higher light transmittance and power generation efficiency. That is, the colored PVB coating and the transparent PVB film which are independently arranged are compared with one layer of colored PVB film, and the pigment consumption can be reduced and the light transmittance can be improved under the condition of meeting the same color requirement.
According to the utility model, the cured colored PVB coating is adopted, so that the problem of uneven color caused by overflow of the adhesive film when the photovoltaic panel is hot-pressed with the battery layer can be further solved.
In the present utility model, the thickness of the colored PVB coating is from 5 to 100 microns, preferably from 10 to 35 microns. Generally, the thickness of the adhesive layer is 300-1520 microns, compared with the colored PVB coating, the colored PVB coating is thinner, so that the required color effect can be achieved by the smaller amount of pigment, and no color difference can be caused to the appearance color of the assembly no matter whether the adhesive film overflows or not in the lamination process.
In the present utility model, the colored PVB coating is mono-or multi-colored.
In the utility model, the bonding layer is a solid PVB, POE, EVA, EPE adhesive film or a liquid adhesive film, preferably a hot laminated solid PVB adhesive film or a cold laminated UV light curing liquid PVB adhesive film, the main component of the colored PVB coating is PVB, and the colored PVB coating has strong bonding force on glass and good ageing resistance and yellowing resistance. When the PVB adhesive film is adopted as the bonding layer, the molecular structure and polarity of the colored coating are similar to those of the PVB adhesive film, and partial fusion or crosslinking reaction can be carried out on the surface of the PVB adhesive film in the lamination process of the photovoltaic module, so that the peeling strength between the colored coating and the PVB adhesive film is particularly excellent.
In the utility model, the closer the refractive indexes of the colored PVB coating, the photovoltaic glass and the PVB adhesive film are, the smaller the interface reflection and the refractive loss are when sunlight passes through the glass, the colored coating and the adhesive film, and the higher the power generation efficiency of the photovoltaic module is. The refractive index of the color coating is 1.48-1.50, when the PVB adhesive film is adopted as the bonding layer, the refractive index of the colored PVB coating is close to that of the transparent PVB adhesive film, and the color coating is the adhesive film variety closest to that of the photovoltaic glass (1.51-1.52), so that the light transmittance of the color coating and the PVB adhesive film after lamination is very high, and the power generation efficiency of the photovoltaic module is ensured.
PVB is polyvinyl butyral, has a molecular weight of 5000-130000, a hydroxyl value of 17-35wt%, an acetal group content of 65-85wt%, and a glass transition temperature Tg of 65-115 ℃ as common knowledge in the art. The colored PVB coating is formed by adding pigment and other components into polyvinyl butyral (PVB) resin. The colored PVB coating is formed by coating a mixture of polyvinyl butyral (PVB) resin, pigment, etc. on the surface of a transparent substrate by conventional means. Among them, the pigment is preferably a weather-resistant pigment including at least one of a pearlescent pigment, a transparent inorganic pigment, or a transparent organic pigment. One skilled in the art can select a suitable type and amount of pigment to make the photovoltaic panel appear a specific color according to the color requirements of the photovoltaic module.
The mixing of polyvinyl butyral (PVB) resin with pigments is common knowledge in the art, and is obtained by, for example, dissolving PVB resin into a solution of a certain viscosity, adding pigments and the like, and uniformly mixing.
PVB belongs to thermoplastic resin, and has excellent bonding strength with glass at normal temperature, but is easy to flow at high temperature (such as above 100 ℃) to generate creep phenomenon, so that safety accidents are generated on curtain wall glass. Therefore, in the art, small amounts of curing agents, photosensitizers, photoactive monomers, coupling agents, antioxidants, ultraviolet light absorbers, and the like are typically added to PVB. PVB with curing agent or photosensitive monomer and photosensitizer is added, and can be cured by heat or ultraviolet irradiation to be converted into a thermosetting coating.
The colored PVB coating is coated by one of the conventional processes of roller coating, curtain coating, screen printing, spraying, knife coating, ink-jet printing, thermal transfer printing, digital thermal transfer printing, laser thermal transfer printing and the like.
The utility model also provides a colored photovoltaic panel which is used for the photovoltaic module; it comprises the following steps: a glass panel, and a cured colored PVB coating; the colored PVB coating is positioned on the glass panel. Those skilled in the art can use colored photovoltaic panels on the current generation layers of photovoltaic modules. Specifically, the colored photovoltaic panel is bonded to the power generation layer by the adhesive layer.
In certain embodiments of the present utility model, the colored photovoltaic panel further comprises a clear PVB film; the glass panel, the colored PVB coating and the transparent PVB adhesive film are sequentially arranged. When the photovoltaic panel with the three-layer structure is used, the photovoltaic panel is directly placed on the power generation layer, and the photovoltaic panel is subjected to hot pressing and compounding. In the hot pressing process, the transparent PVB adhesive film is melted to be in a flowing state.
Compared with the prior art, the utility model has the beneficial effects that: according to the colored photovoltaic panel and the photovoltaic module, through the independent structural design of the colored PVB coating, the high light transmittance and the color uniformity of the colored photovoltaic module are realized at low cost, the multicolor photovoltaic module can be produced, and no matter whether the adhesive film overflows or not in the lamination process, the appearance of the module cannot be caused to have chromatic aberration.
Drawings
Fig. 1 is a schematic cross-sectional view of a photovoltaic panel with a colored PVB coating in an example.
Fig. 2 is a schematic cross-sectional view of a PVB film photovoltaic module in an example.
Detailed Description
In order to further illustrate the technical means adopted by the present utility model and the effects thereof, the present utility model will be described in further detail with reference to preferred embodiments and the accompanying drawings.
As shown in fig. 1, the colored photovoltaic panel of the present utility model includes: a glass panel 1, a cured colored PVB coating 2; in certain preferred embodiments, a clear PVB film 4 is also included.
Wherein, the colored PVB coating 2 adopts the existing preparation technology as follows:
1) Preparing a color coating: dissolving PVB powder with a certain amount of solvent to prepare transparent resin solution, adding pearlescent pigment, curing agent, photosensitizer, photoactive monomer, coupling agent and ultraviolet light absorbent, and stirring uniformly to obtain the colored PVB coating;
2) And (3) coating printing: printing a colored PVB coating 2 containing PVB resin solution and pigment on the surface of a photovoltaic glass panel 1 by adopting a silk screen plate with 100-350 meshes and a silk diameter of 28-80 microns, and obtaining the colored photovoltaic panel 3 through photo-curing or heat curing.
After the colored PVB coating 2 is solidified, a transparent PVB adhesive film 4 is paved on the glass panel PVB colored coating 2, and cadmium telluride power generation glass 5, a PVB adhesive film 6 and back plate glass 7 are paved in sequence, and the colored photovoltaic module is obtained after heating, lamination and melting.
Example 1
Dissolving 35 parts of PVB powder by using 50 parts of ethylene glycol butyl ether to prepare a transparent resin solution, adding 5.5 parts of blue interference pearlescent pigment (5-25 microns), 6 parts of amino resin curing agent, 2 parts of epoxy silane coupling agent, 1 part of 1130 ultraviolet light absorber and 0.5 part of polyether defoamer, and uniformly stirring to prepare the thermosetting blue PVB coating; and printing the colored PVB coating 2 containing PVB resin solution and blue pigment on the surface of the optical glass panel 1 by adopting a 300-mesh screen plate with a wire diameter of 38 microns, and carrying out heat curing at 165 DEG/10 min to obtain the cured colored glass panel 3.
And paving the transparent PVB solid adhesive film 4 on the PVB colored coating 2 of the glass panel, paving the cadmium telluride power generation glass 5, the PVB adhesive film 6 and the back plate glass 7 in sequence, and laminating, heating and melting for 175 ℃ per 25 minutes to obtain the blue photovoltaic module.
Example 2
Dissolving 30 parts of PVB powder by using 50 parts of cyclohexanone solvent to prepare a transparent resin solution, adding 5.5 parts of red interference pearlescent pigment (10-60 microns), 11 parts of HDI isocyanate curing agent, 2 parts of aminosilane coupling agent, 1 part of 1130 ultraviolet light absorber and 0.5 part of polyether defoamer, and uniformly stirring to prepare the thermosetting red PVB coating; printing the colored PVB coating 2 containing PVB resin solution and pigment on the surface of the optical glass panel 1 by adopting a screen plate with a screen diameter of 58 micrometers and 200 meshes, and heating and curing at 165 ℃ per 8 minutes to obtain the cured colored glass panel 3.
And coating a transparent light-cured liquid PVB adhesive film 4 on the glass panel PVB colored coating 2, wherein the thickness is 380 microns, sequentially paving cadmium telluride power generation glass 5, light-cured liquid PVB adhesive film 6 (with the thickness of 380 microns) and back plate glass 7, vacuumizing to discharge bubbles, and irradiating ultraviolet light (with the illumination energy of 1350 millijoules per square centimeter) from the front and back sides of the assembly, so that the liquid PVB adhesive film is light-cured to obtain the packaged red photovoltaic assembly.
Example 3
Dissolving 33 parts of PVB powder by using 20 parts of ethanol and 36 parts of ethylene glycol butyl ether mixed solvent to prepare a transparent resin solution, adding 5 parts of golden interference pearlescent pigment (5-25 microns), 4 parts of trimethylolpropane triacrylate, 2 parts of 184 photosensitizers, 0.5 part of 1130 ultraviolet light absorbers and 0.5 part of polyether defoamers, and uniformly stirring to prepare the UV photocuring color PVB coating; and (3) screen printing the colored PVB coating 2 containing PVB resin solution and pigment on the surface of the glass panel 1 by adopting a screen plate with a wire diameter of 34 micrometers and 300 meshes, firstly removing the solvent in the coating by hot air, and curing by UV light (the illumination energy is 800 mJ/square centimeter) to obtain the cured golden glass panel 3.
And paving the transparent PVB adhesive film 4 on the PVB colored coating 2 of the glass panel, paving the cadmium telluride power generation glass 5, the PVB adhesive film 6 and the back plate glass 7 in sequence, and laminating, heating and melting for 175 ℃ per 25 minutes to obtain the colored photovoltaic module.
Example 4
Mixing and dissolving 32 parts of PVB powder by 27 parts of propylene glycol methyl ether and 29 parts of ethylene glycol butyl ether to prepare a transparent resin solution, adding 4.5 parts of golden yellow interference pearlescent pigment (5-25 microns), 5 parts of pentaerythritol triacrylate, 1 part of 1173 photosensitizer, 1 part of 1130 ultraviolet light absorber and 0.5 part of polyether defoamer, and uniformly stirring to prepare the UV photocuring color PVB coating; and (3) screen printing the colored PVB coating 2 containing PVB resin solution and pigment on the surface of the glass panel 1 by adopting a screen plate with a wire diameter of 34 micrometers and 300 meshes, firstly removing the solvent in the coating by hot air, and curing by UV light (the irradiation energy is 1000 mJ/square cm) to obtain the cured colored glass panel 3.
And paving the transparent PVB adhesive film 4 on the PVB colored coating 2 of the glass panel, paving the cadmium telluride power generation glass 5, the PVB adhesive film 6 and the back plate glass 7 in sequence, and laminating, heating and melting for 25 minutes at 175 ℃ to obtain the colored photovoltaic module.
Comparative example 1
The blue interference pearlescent pigment in the example 1 is directly added into PVB resin, the pigment concentration is kept consistent, a blue PVB solid adhesive film 4 is prepared, the thickness is 380 microns, the blue PVB solid adhesive film is paved on a colorless transparent glass panel 1, then cadmium telluride power generation glass 5, a transparent PVB adhesive film 6 and backboard glass 7 are paved in sequence, and after lamination heating melting is carried out for 175 DEG/25 minutes, a blue photovoltaic module is obtained; the blue PVB solid glue film 3 overflows during the lamination process, and the edge color becomes light.
Comparative example 2
Sequentially laminating, heating and melting a transparent glass panel 1, a blue PVB solid adhesive film 4 with the thickness of 380 microns and containing 3% of phthalocyanine blue pigment, cadmium telluride power generation glass 5, a transparent PVB adhesive film 6 and backboard glass 7 at 175 ℃ per 25 minutes to obtain a phthalocyanine blue photovoltaic module; the bluish PVB solid adhesive film 3 overflows in the lamination process, and the edge color becomes light.
The comparative results of the properties of the color photovoltaic module are shown in Table 1
TABLE 1 color photovoltaic Assembly Performance test results
The results in table 1 show that by adopting the independent structural design of the colored PVB cured coating, the pigment addition amount can be reduced, the cost is reduced, the high light transmittance and the color uniformity of the color photovoltaic module are realized, meanwhile, the defect of uneven edge color caused by overflow of an adhesive film in the lamination process can be avoided, and the multicolor photovoltaic module can be produced.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A photovoltaic module characterized by comprising at least a power generation layer and a colored photovoltaic panel; the colored photovoltaic panel includes: a glass panel and a cured colored PVB coating; the colored PVB coating is positioned on the glass panel; the power generation layer of the photovoltaic module is bonded with the colored PVB coating of the colored photovoltaic panel through an adhesive layer.
2. The photovoltaic module of claim 1, wherein the adhesive layer is a solid PVB, POE, EVA, EPE adhesive film or a UV liquid adhesive film.
3. The photovoltaic module of claim 1, wherein the tie layer is a PVB solid film or a UV liquid PVB film.
4. A colored photovoltaic panel for a photovoltaic module; characterized by comprising the following steps:
a glass panel, and a cured colored PVB coating; the colored PVB coating is positioned on the glass panel.
5. The photovoltaic panel of claim 4, wherein the colored PVB coating has a refractive index of 1.48 to 1.50.
6. The photovoltaic panel of claim 5, wherein the colored PVB coating has a thickness of 5-100 microns.
7. The photovoltaic panel of claim 6, wherein the colored PVB coating has a thickness of 10-35 microns.
8. The photovoltaic panel of claim 4, wherein the colored PVB coating is mono-or multi-colored.
9. The photovoltaic panel of claim 4, further comprising a transparent PVB film; the glass panel, the colored PVB coating and the transparent PVB adhesive film are sequentially arranged.
10. The photovoltaic panel of claim 9, wherein the transparent PVB film has a thickness of 300-1520 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321258068.0U CN220021137U (en) | 2023-05-23 | 2023-05-23 | Colored photovoltaic panel and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321258068.0U CN220021137U (en) | 2023-05-23 | 2023-05-23 | Colored photovoltaic panel and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN220021137U true CN220021137U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321258068.0U Active CN220021137U (en) | 2023-05-23 | 2023-05-23 | Colored photovoltaic panel and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220021137U (en) |
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2023
- 2023-05-23 CN CN202321258068.0U patent/CN220021137U/en active Active
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