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CN-122010412-A - Glass material for high-transmittance photovoltaic module, and preparation method and application thereof

CN122010412ACN 122010412 ACN122010412 ACN 122010412ACN-122010412-A

Abstract

The invention provides a glass material for a high-transmittance photovoltaic module, a preparation method and application thereof, and relates to the technical field of photovoltaic materials. The glass material comprises a glass matrix and a nanoscale antireflection film supported on the surface of the glass matrix, wherein the glass matrix comprises quartz sand, limestone, boric acid, sodium carbonate, cerium oxide, zinc oxide and rare earth oxide in a specific mass ratio, and the nanoscale antireflection film comprises nano titanium dioxide and nano silicon dioxide. The glass material is mainly used for solar cell front plate glass, has high light transmittance, low reflectivity and high impact strength, also has good weather resistance and self-cleaning performance, and has good application prospect.

Inventors

  • SONG MINGYANG
  • XU YAO
  • Qiao le

Assignees

  • 四川高景太阳能科技有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1. The glass material for the high-transmittance photovoltaic module is characterized by comprising a glass matrix and a nanoscale antireflection film loaded on the surface of the glass matrix; The glass matrix is prepared from, by weight, 35-45 parts of quartz sand, 20-30 parts of limestone, 15-20 parts of boric acid, 8-13 parts of sodium carbonate, 2-5 parts of cerium oxide, 0.5-2 parts of zinc oxide and 0.5-3 parts of rare earth oxide; the nanoscale antireflection film comprises nano titanium dioxide and nano silicon dioxide.
  2. 2. The high-transmittance photovoltaic module glass material according to claim 1 is characterized in that the glass substrate comprises, by weight, 37-43 parts of quartz sand, 23-27 parts of limestone, 16-18 parts of boric acid, 9-11 parts of sodium carbonate, 3-4 parts of cerium oxide, 1-1.5 parts of zinc oxide, 1-2 parts of rare earth oxide and 0.5-1 part of nano titanium dioxide.
  3. 3. The glass material for a high-transmittance photovoltaic module according to claim 1, wherein the rare earth oxide comprises at least one of yttrium oxide, lanthanum oxide, and neodymium oxide; preferably, the rare earth oxide further comprises at least one of praseodymium oxide and scandium oxide.
  4. 4. The glass material for a high-transmittance photovoltaic module according to claim 1, wherein the ratio of the thickness of the nanoscale antireflection film to the thickness of the glass substrate is 1 (15000 to 20000).
  5. 5. The glass material for a high-transmittance photovoltaic module according to claim 1, wherein the mass ratio of the nano titanium dioxide to the nano silicon dioxide in the nano antireflection film is (1.27-2.56): 1; And/or the particle size of the nano titanium dioxide is 5 nm-20 nm, and the particle size of the nano silicon dioxide is 10 nm-30 nm.
  6. 6. The high-transmittance photovoltaic module glass material according to claim 1, wherein the glass material has a light transmittance of 94% to 95% and a reflectance of 3% to 3.5%.
  7. 7. A method for producing the glass material for a high-transmittance photovoltaic module according to any one of claims 1 to 6, comprising the steps of: mixing the raw material components, adding a clarifying agent, grinding until the particle size is less than or equal to 50 mu m, and melting to obtain a homogeneous glass liquid; carrying out magnetization treatment and annealing treatment on the homogeneous glass liquid in sequence to obtain a glass matrix; And preparing a nanoscale antireflection film on the surface of the glass matrix by a chemical vapor deposition method to obtain the glass material for the high-transmittance photovoltaic module.
  8. 8. The method according to claim 7, wherein the melting temperature is 1500 ℃ to 1600 ℃ and the duration is 4.5h to 6h; And/or the annealing temperature is 950-1050 ℃, and the heat preservation time of the annealing is 3.5-4.5 h.
  9. 9. The method according to claim 7, wherein the magnetization treatment comprises placing the homogeneous molten glass in a magnetic field; the strength of the magnetic field is 400 Gs-500 Gs, and the magnetizing treatment time is 8-10 min.
  10. 10. The use of the glass material for a high-transmittance photovoltaic module according to any one of claims 1 to 6 in a solar cell method.

Description

Glass material for high-transmittance photovoltaic module, and preparation method and application thereof Technical Field The invention relates to the technical field of photovoltaic materials, in particular to a glass material for a high-transmittance photovoltaic module, and a preparation method and application thereof. Background The optical performance and mechanical reliability of the photovoltaic glass as a front cover plate material of the solar cell module directly determine the power generation efficiency and long-term service life of the whole photovoltaic system. However, currently commercially applied photovoltaic glasses, especially soda lime silica glass produced by conventional float processes, are generally faced with a core technical bottleneck. On the one hand, the glass raw material inevitably contains impurity ions such as iron, and the Fresnel reflection loss of about 4% -8% exists on the surface of the glass raw material, so that the actual light transmittance of the glass raw material is usually less than 90%, and the incident sunlight is lost to be nearly one minute before entering the battery. On the other hand, in order to meet the service requirements of components in complex outdoor environments for many years, glass must possess sufficient mechanical strength and weatherability. The traditional process often increases the strength by increasing the thickness of the glass or adjusting the components, but this further sacrifices the light transmittance, so that a contradiction is formed between the light transmittance and the strength, which is difficult to be compatible. Meanwhile, the conventional glass has limited ultraviolet aging resistance, acid rain corrosion resistance and sand wind abrasion resistance, and the problems of transmittance attenuation, surface damage and the like easily occur after long-term outdoor use, so that the light energy loss is further aggravated. In order to break through the limitation, the new generation of high-efficiency photovoltaic modules have almost strict double requirements on cover plate glass, namely, the light transmittance in the visible light region needs to be stably higher than 92 percent, and the surface reflectivity needs to be lower than 4 percent. This goal means that systematic innovations must be made in the basic components, microstructure, and surface characteristics of the glass. The adjustment space of the traditional float process is approaching saturation, and the optical and mechanical properties are difficult to cooperatively improve by simply relying on process optimization or a single functional coating. Therefore, innovation of a material layer becomes key, namely functional components are introduced in a molecular network design stage by developing a novel high-transmittance glass material system, and multiple functions integration such as light transmission enhancement, reflection inhibition, surface self-maintenance and the like are realized on the basis of guaranteeing the high-strength weather-proof body performance. The method is not only a direct way for improving the conversion efficiency of the photovoltaic module, but also an important technical basis for promoting the cost reduction and efficiency enhancement of the photovoltaic industry and prolonging the life cycle of a power station. In view of this, the present invention has been made. Disclosure of Invention The first object of the present invention is to provide a glass material for a high-transmittance photovoltaic module, which is used for solving the problem that the high-specification photovoltaic module cannot meet the dual requirements of high transmittance and low reflectance, and balancing the contradiction between the transmittance and impact strength of the glass. The second object of the invention is to provide a preparation method of the glass material for the high-transmittance photovoltaic module. A third object of the present invention is to provide a use of the glass material for a high-transmittance photovoltaic module in the solar cell field. In order to achieve the above object of the present invention, the following technical solutions are specifically adopted: a glass material for a high-transmittance photovoltaic module comprises a glass matrix and a nanoscale antireflection film loaded on the surface of the glass matrix; The glass matrix is prepared from, by weight, 35-45 parts of quartz sand, 20-30 parts of limestone, 15-20 parts of boric acid, 8-13 parts of sodium carbonate, 2-5 parts of cerium oxide, 0.5-2 parts of zinc oxide and 0.5-3 parts of rare earth oxide; the nanoscale antireflection film comprises nano titanium dioxide and nano silicon dioxide. In one embodiment, the glass substrate comprises, by weight, 37-43 parts of quartz sand, 23-27 parts of limestone, 16-18 parts of boric acid, 9-11 parts of sodium carbonate, 3-4 parts of cerium oxide, 1-1.5 parts of zinc oxide, 1-2 parts of rare earth oxide and 0.5-1 part of