阅读说明：本技术 镀膜玻璃及其制作方法 (Coated glass and manufacturing method thereof ) 是由 董清世 邵世强 李晓东 王润 常振 刘笑荣 徐小明 赵春宇 于 2019-08-29 设计创作，主要内容包括：本发明属于太阳能技术领域,尤其涉及一种镀膜玻璃及其制作方法；该镀膜玻璃包括玻璃基板和增透膜层,增透膜层包括第一增透膜和第二增透膜,第一增透膜覆盖于玻璃基板的表面并与玻璃基板连接,第二增透膜覆盖于第一增透膜背向玻璃基板的表面并与第一增透膜连接,第一增透膜的折射率大于第二增透膜的折射率。该镀膜玻璃由于增透膜层采用第二增透膜和第一增透膜的双膜层设置并通过第二增透膜的折射率与第一增透膜的折射率之间的折射率配比,使得增透膜层的光线透过率得以增加,该镀膜玻璃的透过率也得以提高,那么安装有该镀膜玻璃的太阳能光伏玻璃组件,其太阳能电池可以吸收到更多的光线,使得该太阳能光伏玻璃组件的光电转换功率得以有效地提升。(The invention belongs to the technical field of solar energy, and particularly relates to coated glass and a manufacturing method thereof; the coated glass comprises a glass substrate and an antireflection film layer, wherein the antireflection film layer comprises a first antireflection film and a second antireflection film, the first antireflection film covers the surface of the glass substrate and is connected with the glass substrate, the second antireflection film covers the surface, opposite to the glass substrate, of the first antireflection film and is connected with the first antireflection film, and the refractive index of the first antireflection film is larger than that of the second antireflection film. According to the coated glass, the antireflection film layer is formed by the second antireflection film and the first antireflection film, and the refractive index ratio between the refractive index of the second antireflection film and the refractive index of the first antireflection film is increased, so that the light transmittance of the antireflection film layer is increased, the transmittance of the coated glass is also improved, and then a solar cell of the coated glass-mounted solar photovoltaic glass assembly can absorb more light, so that the photoelectric conversion power of the solar photovoltaic glass assembly is effectively improved.)

1. A coated glass is characterized in that: comprises that

A glass substrate;

the anti-reflection film layer comprises a first anti-reflection film and a second anti-reflection film, the first anti-reflection film covers the surface of the glass substrate and is connected with the glass substrate, the second anti-reflection film covers the surface, opposite to the glass substrate, of the first anti-reflection film and is connected with the first anti-reflection film, and the refractive index of the first anti-reflection film is larger than that of the second anti-reflection film.

2. The coated glass according to claim 1, wherein: the first antireflection film and the second antireflection film are both porous silicon dioxide films.

3. The coated glass according to claim 1, wherein: the refractive index of the first antireflection film is 1.4-1.5; the refractive index of the second antireflection film is 1.25-1.28.

4. The coated glass according to any one of claims 1 to 3, wherein: the thickness of the first antireflection film is 50 mm-150 mm; the thickness of the second antireflection film is 80-150 mm.

5. The coated glass according to any one of claims 1 to 3, wherein: the glass substrate is a transparent ultra-white embossed glass substrate.

6. The manufacturing method of the coated glass is characterized by comprising the following steps: the method for manufacturing the coated glass according to any one of claims 1 to 5 comprises the following steps,

s10: providing a glass substrate;

s20: sending the glass substrate into a first roller coater, uniformly coating a first antireflection film solution on the surface of the glass substrate by the first roller coater, sending the glass substrate coated with the first antireflection film solution into a first curing furnace for curing, so that the first antireflection film solution on the glass substrate is cured to form a first antireflection film, and then cooling the glass substrate with the first antireflection film;

s30: sending the glass substrate with the first antireflection film into a second roll coater, uniformly coating a second antireflection film solution on the surface of the first antireflection film by the second roll coater, and sending the glass substrate coated with the second antireflection film solution and the first antireflection film into a second curing furnace for curing, so that the second antireflection film solution on the glass substrate is cured to form a second antireflection film;

s40: and conveying the glass substrate with the second antireflection film and the first antireflection film into a tempering furnace for tempering.

7. The method for manufacturing a coated glass according to claim 6, wherein: the curing temperature range in the first curing furnace is 190-210 ℃, and the curing time range in the first curing furnace is 15-25 s; the discharging temperature range of the first curing furnace is 70-80 ℃.

8. The method for manufacturing a coated glass according to claim 6, wherein: the cooling temperature range of the glass substrate with the first antireflection film is 25-31 ℃.

9. The method for producing a coated glass according to any one of claims 6 to 8, wherein: the curing temperature range in the second curing furnace is 290-310 ℃.

10. The method for producing a coated glass according to any one of claims 6 to 8, wherein: the toughening temperature range in the toughening furnace is 690-710 ℃, and the toughening time range in the toughening furnace is 115-125 s.

Technical Field

The invention belongs to the technical field of solar energy, and particularly relates to coated glass and a manufacturing method thereof.

Background

With the ever-decreasing consumption of fossil fuels, solar energy has become an important component of energy used by humans and is constantly being developed. Solar power generation is an emerging renewable energy source.

At present, solar power generation is generally realized through a solar photovoltaic glass assembly, the solar photovoltaic glass assembly is composed of glass, a solar cell piece, a film, a back plate and a metal wire, the solar cell piece is sealed between the glass and the back plate through the film, sunlight penetrates through the glass and then irradiates on the solar cell piece, and the solar cell piece converts the sunlight into electric energy and leads out the electric energy through the metal wire, so that the photoelectric conversion of the solar cell assembly can be realized; however, the conventional glass has poor light transmittance, so that the photoelectric conversion power of the solar photovoltaic glass component is poor.

Disclosure of Invention

The invention aims to provide coated glass and a manufacturing method thereof, and aims to solve the technical problem that photoelectric conversion power of a solar photovoltaic glass assembly is poor due to poor light transmittance of the glass in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: a coated glass comprises

A glass substrate;

the anti-reflection film layer comprises a first anti-reflection film and a second anti-reflection film, the first anti-reflection film covers the surface of the glass substrate and is connected with the glass substrate, the second anti-reflection film covers the surface, opposite to the glass substrate, of the first anti-reflection film and is connected with the first anti-reflection film, and the refractive index of the first anti-reflection film is larger than that of the second anti-reflection film.

Optionally, the first antireflection film and the second antireflection film are both porous silicon dioxide films.

Optionally, the refractive index of the first antireflection film is 1.4-1.5; the refractive index of the second antireflection film is 1.25-1.28.

Optionally, the thickness of the first antireflection film is 50mm to 150 mm; the thickness of the second antireflection film is 80-150 mm.

Optionally, the glass substrate is a transparent ultra-white embossed glass substrate.

One or more technical schemes in the coated glass and the manufacturing method thereof provided by the invention have at least one of the following technical effects: when the solar cell is used, light rays sequentially penetrate through the second antireflection film on the antireflection film layer, the first antireflection film on the antireflection film layer and the glass substrate and then irradiate the solar cell, and the solar cell converts light energy into electric energy, so that solar power generation can be realized; according to the coated glass, the antireflection film layer is formed by the second antireflection film and the first antireflection film, and the refractive index ratio of the second antireflection film to the refractive index of the first antireflection film increases the light transmittance of the antireflection film layer and improves the transmittance of the coated glass, so that the solar cell of the solar photovoltaic glass assembly provided with the coated glass can absorb more light, and the photoelectric conversion power of the solar photovoltaic glass assembly can be effectively improved.

The invention adopts another technical scheme that: a method for manufacturing coated glass, which is used for manufacturing the coated glass and comprises the following steps,

s10: providing a glass substrate;

s20: sending the glass substrate into a first roller coater, uniformly coating a first antireflection film solution on the surface of the glass substrate by the first roller coater, sending the glass substrate coated with the first antireflection film solution into a first curing furnace for curing, so that the first antireflection film solution on the glass substrate is cured to form a first antireflection film, and then cooling the glass substrate with the first antireflection film;

s30: sending the glass substrate with the first antireflection film into a second roll coater, uniformly coating a second antireflection film solution on the surface of the first antireflection film by the second roll coater, and sending the glass substrate coated with the second antireflection film solution and the first antireflection film into a second curing furnace for curing, so that the second antireflection film solution on the glass substrate is cured to form a second antireflection film;

s40: and conveying the glass substrate with the second antireflection film and the first antireflection film into a tempering furnace for tempering.

Optionally, the curing temperature range in the first curing furnace is 190-210 ℃, and the curing time range in the first curing furnace is 15-25 s; the discharging temperature range of the first curing furnace is 70-80 ℃.

Optionally, the cooling temperature range of the glass substrate with the first antireflection film is 25 ℃ to 31 ℃.

Optionally, the curing temperature in the second curing oven ranges from 290 ℃ to 310 ℃.

Optionally, the toughening temperature in the toughening furnace ranges from 690 ℃ to 710 ℃, and the toughening time in the toughening furnace ranges from 115s to 125 s.

The manufacturing method of the coated glass comprises the steps of firstly, uniformly coating a first antireflection film solution on the surface of a glass substrate by using a first roller coater, then sending the glass substrate into a first curing furnace for curing, curing the first antireflection film solution to form a film layer, thereby firmly connecting the glass substrate to form a first antireflection film on the surface of the glass substrate, cooling the first antireflection film, then, a second roller coater is utilized to uniformly coat the second antireflection film solution on the surface of the first antireflection film, the first antireflection film solution is sent into a second curing furnace for curing, the second antireflection film solution is cured to form a film layer, the second antireflection film 22 is firmly connected to the surface of the first antireflection film, so that the glass substrate, the first antireflection film and the second antireflection film are firmly combined, and finally the glass substrate, the first antireflection film and the second antireflection film are sent into a tempering furnace for tempering treatment, so that the strength of the coated glass is improved, and the service life of the coated glass is prolonged; the manufacturing method of the coated glass is simple to operate, low in cost and very suitable for industrial production.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a cross-sectional view of a coated glass according to an embodiment of the present invention.

FIG. 2 is a graph comparing transmittance curves of the coated glass of the embodiment of the present invention and a conventional coated glass.

FIG. 3 is a flow chart of a method for manufacturing coated glass according to another embodiment of the present invention.

FIG. 4 is a flowchart of step S10 of a method for manufacturing coated glass according to another embodiment of the present invention

Wherein, in the figures, the respective reference numerals:

10-glass substrate 20-antireflection film layer 21-first antireflection film

22-second antireflection film.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-4 are exemplary and intended to be used for explanation of the invention, and should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, in an embodiment of the present invention, a coated glass is provided, which includes a glass substrate 10 and an antireflection film layer 20, where the antireflection film layer 20 includes a first antireflection film 21 and a second antireflection film 22, the first antireflection film 21 covers a surface of the glass substrate 10 and is connected to the glass substrate 10, the second antireflection film 22 covers a surface of the first antireflection film 21 opposite to the glass substrate 10 and is connected to the first antireflection film 21, and a refractive index of the first antireflection film 21 is greater than a refractive index of the second antireflection film 22.

Specifically, when the coated glass provided by the embodiment of the invention is used, light rays sequentially pass through the second antireflection film 22 on the antireflection film layer 20, the first antireflection film 21 on the antireflection film layer 20 and the glass substrate 10 and then irradiate the glass substrate onto a solar cell, and the solar cell converts light energy into electric energy, so that solar power generation can be realized; according to the coated glass provided by the embodiment of the invention, the antireflection film layer 20 is formed by adopting two film layers of the second antireflection film 22 and the first antireflection film 21, and the light transmittance of the antireflection film layer 20 is increased and the transmittance of the coated glass is also improved by the refractive index ratio between the refractive index of the second antireflection film 22 and the refractive index of the first antireflection film 21, so that the solar cell of the solar photovoltaic glass component provided with the coated glass can absorb more light, and the photoelectric conversion power of the solar photovoltaic glass component is effectively improved.

In another embodiment of the invention, the first antireflection film 21 and the second antireflection film 22 of the coated glass are both porous silicon dioxide films. Specifically, a silica solution is applied to the surface of the glass substrate 10 to form a film, thereby forming a first antireflection film 21; coating a silicon dioxide solution on the surface of the first antireflection film 21 to form a film and form a second antireflection film 22; after the silicon dioxide film is formed, the silicon dioxide film has a porous structure inside, because the refractive index of the first antireflection film 21 is larger than that of the second antireflection film 22, small-sized through holes are formed in the first antireflection film 21, large-sized through holes are formed in the second antireflection film 22, and light can directly pass through the through holes in the second antireflection film 22 and the through holes in the second antireflection film 22, so that the transmittance of the light passing through the antireflection film layer 20 can be greatly increased, the transmittance of the coated glass is increased, and the photoelectric conversion power of the solar photovoltaic glass assembly is further improved.

Furthermore, the silicon dioxide has strong hydrophilicity after being formed into a film, so that oil stains are not easily adsorbed on the surface of the antireflection film layer 20, the coated glass is easy to clean, the oil stains can be prevented from shielding light, and the transmittance of the coated glass is further improved.

In another embodiment of the invention, the refractive index of the first antireflection film 21 of the coated glass is 1.4-1.5; the refractive index of the second antireflection film 22 is 1.25 to 1.28. Specifically, the refractive index of the first antireflection film 21 may be 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.48, 1.49, or 1.5; the refractive index of the second anti-reflection film 22 can be 1.25, 1.255, 1.26, 1.265, 1.27, 1.275 or 1.28, the first anti-reflection film 21 with the refractive index within the range of 1.4-1.5 is matched with the second anti-reflection layer with the refractive index within the range of 1.25-1.28 for use, the transmittance of the anti-reflection film layer 20 can be effectively increased, in the practical application process, the transmittance of the anti-reflection film layer 20 of the embodiment of the invention is more than 94.25%, meanwhile, the transmittance of the coated glass is 0.3% higher than that of the conventional single-layer coated glass, the power of the solar photovoltaic glass assembly is averagely increased by 1%, and good economic benefits are achieved. Specifically, referring to a comparison graph of transmittance curves of the coated glass according to the embodiment of the present invention and the common coated glass shown in fig. 2, it can be seen from fig. 2 that the transmittance of the coated glass according to the embodiment of the present invention in the whole wavelength band is higher than that of the common coated glass, so that the power output of the solar photovoltaic glass assembly mounted with the coated glass can be effectively improved, and meanwhile, in the short wavelength band, the transmittance of the coated glass according to the embodiment of the present invention is significantly higher than that of the common coated glass, so that the power output of the solar photovoltaic glass assembly can be further increased.

In another embodiment of the invention, the thickness of the first antireflection film 21 of the coated glass is 50mm to 150 mm; the thickness of the second antireflection film 22 is 80mm to 150 mm. Specifically, the thickness of the first antireflection film 21 may be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, or 150mm, and the first antireflection film 21 within the thickness range not only has good transmittance, but also can effectively reduce the problem of film peeling between the first antireflection film 21 and the glass substrate 10; the thickness of the second antireflection film 22 may be 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, or 150mm, and the second antireflection film 22 within the thickness range not only has good transmittance, but also can effectively avoid the problem of film peeling between the first antireflection film 21 and the second antireflection film 22; the first antireflection film 21 with the thickness within the range of 50 mm-150 mm is matched with the second antireflection film 22 with the thickness within the range of 80 mm-150 mm for use, so that the transmittance of the antireflection film layer 20 can be effectively improved, the strength of the coated glass can be improved, and the service life of the coated glass can be prolonged.

In another embodiment of the present invention, the glass substrate 10 of the coated glass is provided as a transparent super white embossed glass substrate. Specifically, the transparent ultrawhite patterned glass substrate has good transmittance, the transmittance of the coated glass can be further improved, and the photoelectric conversion power of the solar photovoltaic glass assembly is improved.

In another embodiment of the invention, the first antireflection film 21 of the coated glass is provided to cover the suede of the transparent super white embossed glass substrate and is connected with the transparent super white embossed glass substrate. Specifically, the first antireflection film 21 covers the suede of the transparent ultrawhite embossed glass substrate, the first antireflection film 21 can be firmly connected to the transparent ultrawhite embossed glass substrate, and the suede of the transparent ultrawhite embossed glass substrate can reduce glare and further increase the transmittance of the coated glass.

In another embodiment of the present invention, the thickness of the glass substrate 10 of the coated glass is 1mm to 5 mm. Specifically, the thickness of the glass substrate 10 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm or 5mm, the glass substrate 10 in the thickness range is suitable in size, the strength is good, the transmittance is good, the problems that the strength of the glass substrate 10 is small and the glass substrate is easy to damage due to too small thickness can be avoided, the service life of a solar photovoltaic glass assembly is short, the glass substrate is easy to damage can be solved, the problems that the transmittance of the glass substrate 10 is poor due to too large thickness, the size of the solar photovoltaic glass assembly is large, the quality is heavy, and the cost is high can also be avoided.

In another embodiment of the present invention, referring to fig. 3, a method for manufacturing coated glass is provided, which is used for manufacturing the coated glass, and the method comprises the following specific steps:

s10: providing a glass substrate 10;

s20: the glass substrate 10 is sent into a first roll coater, the first roll coater uniformly coats the first antireflection film solution on the surface of the glass substrate 10, then the glass substrate 10 coated with the first antireflection film solution is sent into a first curing furnace to be cured, so that the first antireflection film solution on the glass substrate 10 is cured to form a first antireflection film 21, and then the glass substrate 10 with the first antireflection film 21 is cooled.

S30: sending the glass substrate 10 with the first antireflection film 21 into a second roll coater, uniformly coating a second antireflection film solution on the surface of the first antireflection film 21 by the second roll coater, and sending the glass substrate 10 coated with the second antireflection film solution and provided with the first antireflection film 21 into a second curing furnace for curing, so that the second antireflection film solution on the glass substrate 10 is cured to form a second antireflection film 22;

s40: the glass substrate 10 with the second antireflection film 22 and the first antireflection film 21 is sent into a tempering furnace to be tempered.

Specifically, the method for manufacturing the coated glass according to the embodiment of the present invention includes first uniformly coating a first antireflection film solution on a surface of a glass substrate 10 by using a first roll coater, then feeding the glass substrate into a first curing furnace for curing, wherein the first antireflection film solution is cured to form a film layer, thereby firmly connecting the first antireflection film 21 to the surface of the glass substrate 10, then cooling the first antireflection film 21, then uniformly coating a second antireflection film solution on a surface of the first antireflection film 21 by using a second roll coater, then feeding the glass substrate into a second curing furnace for curing, wherein the second antireflection film solution is cured to form a film layer, thereby firmly connecting the glass substrate 10, the first antireflection film 21, and the second antireflection film 22, thereby firmly bonding the glass substrate 10, the first antireflection film 21, and the second antireflection film 22, and finally feeding the glass into a tempering furnace for tempering treatment, thereby enhancing the strength of the coated glass, the service life of the coated glass is prolonged; the manufacturing method of the coated glass provided by the embodiment of the invention is simple to operate, low in cost and very suitable for industrial production.

In another embodiment of the present invention, referring to fig. 4, a method for manufacturing a coated glass is provided, wherein step S10 specifically includes;

s11: providing a glass original sheet;

s12: the glass sheet is cut, edged and cleaned to obtain the glass substrate 10.

Specifically, after the glass original sheet is cut according to the designed size, the edge of the glass original sheet is polished, burrs on the edge of the glass original sheet are cleared, irregular parts on the edge of the glass original sheet are polished regularly, and the obtained glass substrate 10 is guaranteed to be regular in shape so as to facilitate subsequent processing; the original glass sheet is cleaned, dirt on the surface of the original glass sheet can be removed, the subsequent connection between the first antireflection film 21 and the glass substrate 10 is prevented from being influenced, the first antireflection film 21 is firmly combined on the surface of the glass substrate 10, the shielding of the dirt on light can be avoided, and the transmittance of the coated glass is improved.

In another embodiment of the invention, the curing temperature range in the first curing furnace in the manufacturing method of the coated glass is 190-210 ℃, and the curing time range in the first curing furnace is 15-25 s; the discharging temperature range of the first curing furnace is 70-80 ℃. Specifically, the curing temperature range in the first curing furnace is 190 ℃, 192 ℃, 194 ℃, 196 ℃, 198 ℃, 200 ℃, 202 ℃, 204 ℃, 206 ℃, 208 ℃ or 210 ℃, the first antireflection film solution is cured in the temperature range, and the first antireflection film solution is fast in film forming and good in curing effect; the curing time in the first curing furnace can be 15s, 16s, 17s, 18s, 19s, 20s, 21s, 22s, 23s, 24s or 25s, and the setting of the curing time range can effectively avoid the problem of incomplete curing of the first antireflection film solution; the tapping temperature of the first curing oven can be set within a range of 70 ℃, 71 ℃, 72 ℃, 73 ℃, 74 ℃, 75 ℃, 76 ℃, 77 ℃, 78 ℃, 79 ℃ or 80 ℃, and the glass substrate 10 with the first antireflection film 21 can be prevented from cracking and the like due to a large temperature difference before and after tapping.

In another embodiment of the present invention, a method for manufacturing a coated glass is provided, in which the cooling temperature of the glass substrate 10 with the first antireflection film 21 is in a range of 25 ℃ to 31 ℃. Specifically, the glass substrate 10 discharged from the first curing oven enters the air cooling section for cooling, and the air cooling section can effectively improve the cooling speed of the glass substrate 10 with the first antireflection film 21 and improve the production efficiency of the coated glass. The cooling temperature may be 25 ℃, 26 ℃, 27 ℃, 28 ℃, 29 ℃, 30 ℃ or 31 ℃, and the temperature range is set so that the glass substrate 10 with the first antireflection film 21 can be cooled to normal temperature as soon as possible, thereby facilitating the subsequent production of the second antireflection film 22.

In another embodiment of the invention, the curing temperature range in the second curing furnace in the manufacturing method of the coated glass is 290-310 ℃. Specifically, the curing temperature range in the second curing furnace is 290 ℃, 292 ℃, 294 ℃, 296 ℃, 298 ℃, 300 ℃, 302 ℃, 304 ℃, 306 ℃, 308 ℃ or 310 ℃, and the setting of the temperature range can ensure that the second antireflection film solution is completely cured, can also ensure that the first antireflection film 21 and the glass substrate 10 are firmly combined, and the first antireflection film 21 and the second antireflection film 22 are firmly combined, so that the problem that the film layer falls off when the coated glass is used is avoided.

In another embodiment of the invention, the toughening temperature range in the toughening furnace in the manufacturing method of the coated glass is 690-710 ℃, and the toughening time range in the toughening furnace is 115-125 s. The curing temperature range in the first curing furnace is 690 ℃, 692 ℃, 694 ℃, 696 ℃, 698 ℃, 700 ℃, 702 ℃, 704 ℃, 706 ℃, 708 ℃ or 710 ℃, so that the coated glass is completely toughened, the problems that the performance of the coated glass is seriously influenced due to insufficient toughening caused by too low temperature and the coated glass is cracked caused by too high toughening temperature range can be avoided; the toughening time in the toughening furnace can be 115s, 116s, 117s, 118s, 119s, 210s, 211s, 212s, 213s, 214s or 215, and the toughening time range is set, so that the toughening effect of the coated glass is good, and the performance of the coated glass is effectively improved.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.