WO2020223991A1

WO2020223991A1 - Photoelectric conversion material for short-distance high-power light and manufacturing method therefor

Info

Publication number: WO2020223991A1
Application number: PCT/CN2019/086852
Authority: WO
Inventors: 张敬敏
Original assignee: 山东光韵智能科技有限公司
Priority date: 2019-05-08
Filing date: 2019-05-14
Publication date: 2020-11-12
Also published as: CN110048522A

Abstract

Disclosed are a photoelectric conversion material for short-distance high-power light and a manufacturing method therefor. The photoelectric conversion material comprises a transparent concave mirror (1), a solar cell (2) with an upper surface tightly glued to the bottom of the transparent concave mirror (1) by means of EVA, and a mounting groove (3) for fixing the transparent concave mirror (1) and the solar cell (2), and same is characterized in that the transparent concave mirror (1) is ultra-clear glass, and the face of the ultra-clear glass that is not in contact with the solar cell (2) is of a concave-face structure; and buffer cotton (4) is fixed in an internal area, matching the solar cell (2), of the mounting groove (3), and a heat-conducting silicone grease sealing structure (5) is arranged in an external area, where the transparent concave mirror (1) matches the solar cell (2), of the mounting groove (3). The present invention is suitable for the photoelectric conversion of the short-distance high-power light, is high in energy conversion efficiency, and has the characteristics of heat resistance, and a good stability and impact resistance.

Description

Photoelectric conversion material for short-distance high-power light and manufacturing method thereof

Technical field

The present invention relates to the technical field of laser photoelectric materials, in particular to a photoelectric conversion material for short-distance high-power light and a manufacturing method thereof.

Background technique

The prior art generally believes that lasers, rays, etc. are the most commonly used types of high-power light, and their energy levels are very high. However, in the conventional technology, there is no photoelectric conversion material specifically for lasers. The conventional theories in the prior art believe that The absorption of laser light is better with opaque materials, which can easily convert light energy into heat energy instead of directly absorbing light energy.

technical problem

As people use more and more lasers or rays, and the technology becomes more and more mature, the possibility of using lasers as a long-distance/wireless energy transmission carrier and form becomes more possible. Based on this, the reality is The technical gap of photoelectric conversion materials at the receiving end of high-power light (currently mainly aimed at lasers, because rays have obvious damage to living bodies) should also be put on the agenda. As the receiving end of near-end energy transmission, it will definitely be due to The high-energy, high-concentrated energy conduction of the laser generates heat, and it will shake and impact due to man-made collisions, earthquakes or other uncertain principles. Therefore, the material still needs a certain impact adaptability.

Therefore, there is an urgent need for a photoelectric conversion material suitable for short-distance high-power light photoelectric conversion, high energy conversion efficiency, heat resistance, good stability, and impact resistance.

Technical solutions

The invention aims to provide a photoelectric conversion material suitable for short-distance high-power light photoelectric conversion, high energy conversion efficiency, heat resistance, good stability, and impact resistance.

In order to achieve the above objectives, the present invention adopts the following technical solutions: a photoelectric conversion material for short-distance high-power light, including a transparent concave mirror, a solar cell whose upper surface and the bottom of the transparent concave mirror are tightly glued through EVA, and a fixed transparent concave mirror And the solar cell installation groove, the transparent concave mirror is ultra-white glass, the side of the ultra-white glass that is not in contact with the solar cell has an eccentric convex lens structure; the internal area of the installation groove matching the solar cell is fixed with a buffer sponge, and the installation groove is transparent The outer area where the concave mirror matches the solar cell is provided with a thermal conductive silicone grease sealing structure;

The manufacturing method of the transparent concave mirror includes the following steps:

1) Raw material preparation

①Prepare the following raw materials by weight: 1.1 parts-1.15 parts of alumina, 73 parts-73.5 parts of silica particles, 4.0 parts-4.15 parts of magnesium oxide, 8.65 parts-8.7 parts of calcium oxide, 32 parts of sodium carbonate- 34 parts, 0.7 to 0.8 parts of potassium nitrate, enough dry ice;

②Use alumina ceramic ware as a container to desludge and mechanically grind the mixture of raw materials other than dry ice obtained in step ①, and use silica particles as abrasives, supplemented by 2kW-3kW vibration After the deburring equipment vibrates for 3h-4h, the grinding product is deslimed to obtain the pre-deironing raw material;

③Use electromagnetic equipment to perform secondary iron removal treatment on the pre-iron-removing raw materials obtained in step ② to obtain secondary iron-removing raw materials;

④Using a high-purity quartz crucible with an iron content of 80ppm-150ppm as a smelting vessel, using the secondary iron-removing raw materials prepared in step ③ as raw materials, using a smelting temperature of 1185°C-1190°C and a smelting time of 90min-100min for initial smelting. The molten glass clinker fluid is poured into deionized water and cooled to obtain prefabricated glass clinker;

⑤Take the platinum crucible as the smelting vessel, and take the prefabricated glass clinker obtained in step ④ as the raw material, and use the temperature of 1235-1240℃ for secondary smelting for 30min-35min; after the secondary smelting is completed, the temperature will be raised to 1255-1260℃, in the molten pool At a mass rate of 1.5%/min-1.55%/min, continuously and uniformly pass the dry ice prepared in step ① through the alumina ceramic tube, and then keep it for 3min-5min, then use a graphite stirrer to stir at 50rpm/min-55rpm/min Stir at a rate of 45min-50min at one time, and then reduce to 8rpm/min-10rpm/min for a second stirring rate of 18min-20min. Finally, withdraw the alumina ceramic tube and naturally clarify for 5min-8min to obtain a clear homogenized glass fluid;

⑥Pour the clarified and homogenized glass fluid obtained in step ⑤ according to the designed size on the bottom which has been preheated to 400-420℃. The shape of the symmetrical arc convex shape with the center of the bottom as the center is preformed in a square mold, and then preformed at 400℃ Keep the temperature in a vacuum furnace at -420°C for 2h-2.5h, then cut off the power, after the furnace is cooled to 180°C, it will be released from the mold. The outer surfaces of the demoulding glass body are polished by the use of hydrofluoric acid aqueous solution until all the outer surfaces are mirrored. The required transparent concave mirror is obtained.

To

Beneficial effect

Compared with the prior art, the present invention has the following advantages: (1) The present invention is different from the prior art by adopting light-absorbing materials and using the principle of light-to-heat to realize laser or ray energy transmission and recovery, but does the opposite. Ultra-white glass with a light transmittance of more than 92% is used as the raw material. After physical foaming and a regular concave mirror structure on the surface, the unidirectional laser or rays are scattered in the glass for multiple times (basically equivalent to diffuse scattering) to homogenize the energy , Since the scattering angle of the concave mirror to the light incident from the normal direction is always maintained on the upper surface of the solar cell without considering the reflection or scattering of the bubble, essentially 75%-80% of the laser or ray energy is still After being scattered and finally irradiated on the upper surface of the solar cell, it is absorbed by the light transfer, so that the heating rate is low, and the receiving surface has a longer service life. Because the laser or ray energy is not concentrated, the absorption surface is wider and the absorption rate is also Just higher. (2) The invention also adds a sound insulation device and a silica gel sealing structure, and the weather resistance and seismic performance have been greatly improved. Therefore, the invention has the characteristics of being suitable for short-distance high-power light photoelectric conversion, high energy conversion efficiency, heat resistance, good stability, and impact resistance.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the forest belt of the present invention;

In the picture: the transparent concave mirror 1, the solar cell 2, the installation groove 3, the buffer sponge 4, the sealing structure 5.

The best mode of the invention

Example 1:

A photoelectric conversion material for short-distance high-power light, including a transparent concave mirror 1, a solar cell whose upper surface and the bottom of the transparent concave mirror 1 are tightly glued by EVA 2, a mounting groove 3 for fixing the transparent concave mirror 1 and the solar cell 2 , Characterized in that: the transparent concave mirror 1 is ultra-white glass, and the side of the ultra-white glass that is not in contact with the solar cell 2 has an eccentric convex lens structure; the inner area of the mounting groove 3 matching the solar cell 2 is fixed with a buffer sponge 4 for installation The outer area where the transparent concave mirror 1 of the groove 3 matches with the solar cell 2 is provided with a thermal conductive silicone grease sealing structure 5;

1) Raw material preparation

① Prepare the following raw materials by weight: 1.1 g of alumina, 73.5 g of silica particles, 4.0 g of magnesium oxide, 8.65 g of calcium oxide, 32 g of sodium carbonate, 0.7 g of potassium nitrate, and sufficient dry ice;

④Using a high-purity quartz crucible with an iron content of 80ppm-150ppm as a smelting vessel, using the secondary iron-removing raw materials prepared in step ③ as a raw material, using a smelting temperature of 1185℃-1190℃, a smelting time of 90min-100min for initial smelting, The molten glass clinker fluid is poured into deionized water and cooled to obtain prefabricated glass clinker;

⑤Take the platinum crucible as the smelting vessel, and take the prefabricated glass clinker obtained in step ④ as the raw material, and use the temperature of 1235℃-1240℃ for secondary smelting for 30min-35min; after the secondary smelting is completed, the temperature is increased to 1255℃-1260℃, The dry ice prepared in step ① is continuously and uniformly introduced into the pool at a mass rate of 1.5%/min-1.55%/min through the alumina ceramic tube, and then the temperature is maintained for 3min-5min and then the graphite stirrer is used at 50rpm/min-55rpm/min Stirring rate is 45min-50min at one time, and the stirring rate is reduced to 8rpm/min-10rpm/min for 18min-20min. Finally, the alumina ceramic tube is extracted and naturally clarified for 5min-8min to obtain a clear homogenized glass fluid;

⑥Pour the clarified and homogenized glass fluid obtained in step ⑤ according to the designed size on the bottom that has been preheated to 400℃-420℃, and the shape of the symmetrical arc convex shape with the center of the bottom as the center is preformed in a square mold, and then preformed at 400℃ Keep it in a vacuum furnace at ℃-420℃ for 2h-2.5h, then cut off the power, after the furnace is cooled to 180℃, it will be released from the furnace, and the external surfaces of the release glass body will be polished by the atomization of hydrofluoric acid aqueous solution until all the external surfaces are mirrored. , That is to obtain the required transparent concave mirror.

The overall light transmittance of the glass part of the present invention is 93.2%. When polycrystalline silicon solar cells are used, the average light energy absorption rate is 13.6%. When polycrystalline silicon solar cells are used, the light energy average absorption rate is 25.8%, which can realize remote photoelectric conversion and transmission in the field of mobile phones with low energy consumption. Features.

Embodiments of the invention

Example 2:

The whole is consistent with Example 1, the differences are:

1) Raw material preparation

① Prepare the following raw materials by weight: 1.15g alumina, 73g silica particles, 4.15g magnesium oxide, 8.7g calcium oxide, 34g sodium carbonate, 0.8g potassium nitrate, and a sufficient amount of dry ice;

The overall light transmittance of the glass part of the present invention is 93.2%. When polycrystalline silicon solar cells are used, the average light energy absorption rate is 12.2%, and when polycrystalline silicon solar cells are used, the average light energy absorption rate is 23.4%, which can realize remote photoelectric conversion and transmission in the field of mobile phones with low energy consumption. Features.

Industrial applicability

The light-to-heat principle is used to realize laser or ray energy transmission and recovery, but the opposite is done. The ultra-white glass with a light transmittance of more than 92% is used as the raw material, and the physical foaming and the regular concave mirror structure on the surface enable unidirectional propagation The laser or rays are scattered multiple times in the glass (basically equivalent to diffuse scattering) to homogenize the energy. Also added a sound insulation device and a silicone seal structure, weather resistance and seismic performance have been greatly improved.

Sequence Listing Free Content

The above description of the disclosed embodiments is only to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

To

Claims

, A photoelectric conversion material for short-distance high-power light, including a transparent concave mirror (1), the upper surface and the transparent concave mirror (1) the bottom of the solar cell (2) tightly glued by EVA, a fixed transparent concave mirror (1) ) And the installation groove (3) of the solar cell (2), characterized in that: the transparent concave mirror (1) is ultra-white glass, and the side of the ultra-white glass that is not in contact with the solar cell (2) has an eccentric convex lens structure; The inner area of the groove (3) that matches the solar cell (2) is fixed with a buffer sponge (4), and the transparent concave mirror (1) of the installation groove (3) and the outer area of the solar cell (2) that match are provided with thermally conductive silicone grease Sealing structure (5);

The manufacturing method of the transparent concave mirror includes the following steps:

1) Raw material preparation

①Prepare the following raw materials by weight: 1.1 parts-1.15 parts of alumina, 73 parts-73.5 parts of silica particles, 4.0 parts-4.15 parts of magnesium oxide, 8.65 parts-8.7 parts of calcium oxide, 32 parts of sodium carbonate- 34 parts, 0.7 to 0.8 parts of potassium nitrate, enough dry ice;

②Use alumina ceramic ware as a container to desludge and mechanically grind the mixture of raw materials other than dry ice obtained in step ①, and use silica particles as abrasives, supplemented by 2kW-3kW vibration After the deburring equipment vibrates for 3h-4h, the grinding product is deslimed to obtain the pre-deironing raw material;

③Use electromagnetic equipment to perform secondary iron removal treatment on the pre-iron-removing raw materials obtained in step ② to obtain secondary iron-removing raw materials;

④Using a high-purity quartz crucible with an iron content of 80ppm-150ppm as a smelting vessel, using the secondary iron-removing raw materials prepared in step ③ as a raw material, using a smelting temperature of 1185℃-1190℃, a smelting time of 90min-100min for initial smelting, The molten glass clinker fluid is poured into deionized water and cooled to obtain prefabricated glass clinker;

⑤Take the platinum crucible as the smelting vessel, and take the prefabricated glass clinker obtained in step ④ as the raw material, and use the temperature of 1235℃-1240℃ for secondary smelting for 30min-35min; after the secondary smelting is completed, the temperature is increased to 1255℃-1260℃, The dry ice prepared in step ① is continuously and uniformly introduced into the pool at a mass rate of 1.5%/min-1.55%/min through the alumina ceramic tube, and then the temperature is maintained for 3min-5min and then the graphite stirrer is used at 50rpm/min-55rpm/min Stirring rate is 45min-50min at one time, and the stirring rate is reduced to 8rpm/min-10rpm/min for 18min-20min. Finally, the alumina ceramic tube is extracted and naturally clarified for 5min-8min to obtain a clear homogenized glass fluid;

⑥Pour the clarified and homogenized glass fluid obtained in step ⑤ according to the designed size on the bottom that has been preheated to 400℃-420℃, and the shape of the symmetrical arc convex shape with the center of the bottom as the center is preformed in a square mold, and then preformed at 400℃ Keep it in a vacuum furnace at ℃-420℃ for 2h-2.5h, then cut off the power, after the furnace is cooled to 180℃, it will be released from the furnace, and the external surfaces of the release glass body will be polished by the atomization of hydrofluoric acid aqueous solution until all the external surfaces are mirrored. , That is to obtain the required transparent concave mirror.