CN109103273B - High-strength glass cover plate for solar cell circuit and manufacturing method thereof - Google Patents
High-strength glass cover plate for solar cell circuit and manufacturing method thereof Download PDFInfo
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- CN109103273B CN109103273B CN201810971959.8A CN201810971959A CN109103273B CN 109103273 B CN109103273 B CN 109103273B CN 201810971959 A CN201810971959 A CN 201810971959A CN 109103273 B CN109103273 B CN 109103273B
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- 239000011521 glass Substances 0.000 title claims abstract description 89
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 230000003746 surface roughness Effects 0.000 claims abstract description 17
- 238000005728 strengthening Methods 0.000 claims abstract description 9
- 238000002834 transmittance Methods 0.000 claims abstract description 8
- 239000006059 cover glass Substances 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02366—Special surface textures of the substrate or of a layer on the substrate, e.g. textured ITO/glass substrate or superstrate, textured polymer layer on glass substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- 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
- Y02E10/52—PV systems with concentrators
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a high-strength glass cover sheet for a solar cell circuit and a manufacturing method thereof, wherein the high-strength glass cover sheet for the solar cell circuit comprises the following components: the glass cover plate comprises a glass cover plate body, rough surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body and bright surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body; the surface roughness of the rough surface is more than 10 mu m; the surface roughness of the bright surface is less than 5 nm. According to the invention, the surface slow reflection can be improved through local texturing, the light transmittance is reduced, the surface roughness can be improved, and the interface connection strength with a connection structure is improved. The local brightness can reduce the edge defect of the cover plate, reduce the edge stress concentration, realize high rigidity and keep good performance during high-temperature strengthening treatment. The invention can reduce the transmittance of the glass cover plate, increase the reflection, reduce the circuit temperature of the solar cell, improve the space power generation performance of the solar cell and prolong the service life of the solar cell array.
Description
Technical Field
The invention relates to the technical field of space solar cell arrays, in particular to a high-strength glass cover sheet for a solar cell circuit and a manufacturing method thereof.
Background
A solar cell is a semiconductor device that directly converts light energy into electric energy using a photovoltaic effect. The aircraft can be irradiated by high-energy particles or rays when flying in space, and the glass cover plate is packaged on the surface of the solar cell to protect the cell and reduce the damage of the solar cell caused by unfavorable irradiation. The semi-rigid solar cell circuit has two types of glass cover sheets, one type of glass cover sheet is used for surface protection, and the glass cover sheet mainly plays a role in protecting the solar cell, reducing unfavorable irradiation damage and prolonging the service life of the space irradiation environment; the other glass cover plate is mainly used for protecting the battery and connecting the battery with a base plate or a substrate to form a solar battery circuit.
Generally, the two glass cover sheets for the semi-rigid solar cell circuit have the same performance, but the performance requirements of the glass cover sheets for connecting with a base plate or a substrate are different, and in order to improve the power generation performance of the solar cell module, a material or a structure with high heat dissipation can be adopted, such as methods of improving the scattering coefficient of the glass cover sheets, reducing the light transmittance and the like. Meanwhile, in order to improve the bonding strength between the solar cell module and the substrate or the substrate, a high-strength bonding interface material can be adopted.
Generally, the area of a semi-rigid solar cell array reaches tens of square meters, thousands of solar cell circuit modules exist, the connection strength of the traditional solar cell module and a substrate connection mode (such as hooking and the like) needs to be improved, the mechanical environment of a high rail, a polar region rail, a special rail and the like is complex, the mechanical response is large, the interface connection strength needs to be improved urgently, and the reliability of a solar cell circuit is improved. Therefore, in order to improve the connection reliability of the semi-rigid solar cell array module, improve the power generation performance of the cell circuit in the space environment and prolong the service life of the space environment, a high-strength glass cover sheet for packaging the solar cell is urgently needed in the semi-rigid solar cell array industry.
Disclosure of Invention
The invention aims to provide a high-strength glass cover sheet for a solar cell circuit and a manufacturing method thereof, and aims to solve the problem of high reliable connection of a space-level half-solar cell array solar cell circuit.
To achieve the above object, the present invention provides a high strength cover glass for a solar cell circuit, comprising: the glass cover plate comprises a glass cover plate body, rough surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body and bright surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body; the surface roughness of the rough surface is more than 10 mu m; the surface roughness of the bright surface is less than 5 nm.
The high-strength glass cover sheet for a solar cell circuit is characterized in that the transmission rate of the rough surface under the wavelength of 400-1600 nm is less than 70%.
The high-strength glass cover plate for the solar cell circuit is characterized in that the rough surface is arranged in the middle of the upper surface and the lower surface of the glass cover plate body, and the bright surfaces are arranged on the periphery of the rough surface.
The high-strength glass cover sheet for the solar cell circuit is characterized in that the glass cover sheet body is rectangular, triangular, circular or trapezoidal.
The high-strength cover glass for a solar cell circuit described above, wherein the rough surface is connected to the connection structure by an adhesive.
The invention also provides a manufacturing method of the high-strength glass cover plate for the solar cell circuit, which comprises the following steps:
step 1: cutting the glass ingot into sheets by adopting a laser technology to obtain a glass cover plate body;
step 2: local polishing treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a polishing technology to obtain a bright surface with the surface roughness less than 5 nm;
and step 3: local roughening treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a laser technology, and the surface roughness is larger than a rough surface of 10 mu m;
and 4, step 4: and cutting the glass cover plate body into a required shape by adopting a laser technology, and performing strengthening treatment to obtain the high-strength glass cover plate for the solar cell circuit.
In the above method for manufacturing a high-strength cover glass for a solar cell circuit, in step 4, the cover glass body is strengthened by a heat treatment technology.
The manufacturing method of the high-strength glass cover sheet for the solar cell circuit comprises the following specific steps of: heating the glass cover plate body from room temperature to 450 ℃ at the speed of heating up to 50 ℃ per hour, preserving heat for 3 hours, cooling the glass cover plate body to room temperature at the speed of cooling down to 50 ℃ per hour, and finally annealing for 168 hours in a drying environment and forming.
Compared with the prior art, the invention has the following beneficial effects:
the glass cover plate provided by the invention is of a special-shaped structure, and the surface of the cover plate is locally roughened and locally bright. The purpose of the local texturing of the glass cover sheet is to improve the surface slow reflection, reduce the light transmittance, improve the surface roughness and improve the interface connection strength with the connection structure. The purpose of local brightness is to reduce edge defects of the cover plate, reduce edge stress concentration, realize high rigidity and maintain good performance during high-temperature strengthening treatment. The special-shaped structure can be in any shape such as rectangle, triangle, circle, trapezoid and the like; the glass cover plate is cut and molded through a laser technology, the surface of the glass cover plate is subjected to strengthening treatment, the process is simple, the processing efficiency is high, the transmittance of the glass cover plate can be reduced, the reflection is increased, the circuit temperature of the solar cell is reduced, the space power generation performance of the solar cell is improved, and the service life of a solar cell array is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a solar cell circuit module using a cover glass provided by the present invention;
FIG. 2 is a schematic structural diagram of a high strength cover glass for a solar cell circuit according to the present invention;
fig. 3 is a schematic structural view of the high-strength cover glass for a solar cell circuit according to the present invention when it is connected to the connecting structure.
Detailed Description
The invention will be further described by the following specific examples in conjunction with the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a schematic structural diagram of a solar cell circuit module using the cover glass provided by the present invention is shown. The solar cell circuit module comprises a space-level solar cell 2, common double-sided bright glass cover plates 3 arranged on two sides of the space-level solar cell 2 and a high-strength glass cover plate 1 for the solar cell circuit, wherein the common double-sided bright glass cover plates 3 and the space-level solar cell 2 are connected, and the high-strength glass cover plate 1 for the solar cell circuit and the space-level solar cell 2 are connected through a space-level adhesive 4.
As shown in fig. 2, the present invention provides a high-strength cover glass 1 for a solar cell circuit, comprising: the glass cover plate comprises a glass cover plate body, rough surfaces 11 symmetrically arranged on the upper surface and the lower surface of the glass cover plate body and bright surfaces 12 symmetrically arranged on the upper surface and the lower surface of the glass cover plate body; the surface roughness of the rough surface 11 is more than 10 mu m; the surface roughness of the bright surface 12 is less than 5 nm. The transmission rate of the rough surface 11 under the wavelength of 400 nm-1600 nm is less than 70%. The rough surface 11 is arranged in the middle of the upper surface and the lower surface of the glass cover plate body, and the bright surfaces 12 are arranged around the rough surface 11. The shape of the glass cover plate body can be any shape, and specifically can be rectangular, triangular, circular or trapezoidal. As shown in fig. 3, the roughened surface 11 is attached to the attachment structure 5 by an adhesive. In some embodiments, the cover glass of the present invention may be a cerium-doped glass.
The invention also provides a manufacturing method of the high-strength glass cover sheet 1 for the solar cell circuit, which comprises the following steps:
step 1: cutting the glass ingot into sheets by adopting a laser technology to obtain a glass cover plate body;
step 2: local polishing treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a polishing technology to obtain a bright surface 12 with the surface roughness less than 5 nm;
and step 3: local roughening treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a laser technology, and the surface roughness is larger than a rough surface 11 with the thickness of 10 mu m;
and 4, step 4: and cutting the glass cover plate body into a required shape by adopting a laser technology, and strengthening to obtain the high-strength glass cover plate 1 for the solar cell circuit. Wherein, the glass cover plate body can be strengthened by adopting a heating treatment technology. The heating treatment technology comprises the following specific steps: heating the glass cover plate body from room temperature to 450 ℃ at the speed of heating up to 50 ℃ per hour, preserving heat for 3 hours, cooling the glass cover plate body to room temperature at the speed of cooling down to 50 ℃ per hour, and finally annealing for 168 hours in a drying environment and forming.
The glass cover plate provided by the invention is of a special-shaped structure, and the surface of the cover plate is locally roughened and locally bright. The purpose of the local texturing of the glass cover sheet is to improve the surface slow reflection, reduce the light transmittance, and in addition, improve the surface roughness and improve the interface connection strength with the connection structure 5. The purpose of local brightness is to reduce edge defects of the cover plate, reduce edge stress concentration, realize high rigidity and maintain good performance during high-temperature strengthening treatment. The special-shaped structure can be in any shape such as rectangle, triangle, circle, trapezoid and the like; the glass cover plate is cut and molded through a laser technology, the surface of the glass cover plate is subjected to strengthening treatment, the process is simple, the processing efficiency is high, the transmittance of the glass cover plate can be reduced, the reflection is increased, the circuit temperature of the solar cell is reduced, the space power generation performance of the solar cell is improved, and the service life of a solar cell array is prolonged.
Experiments prove that the connection structure 5 and the glass for packaging the solar cell are assembled together through the adhesive, and the rough surface 11 of the glass cover plate is cemented, so that the purpose of increasing the interface bonding strength is achieved (the glass cover plate for the solar cell circuit is sealed in a cementing mode, and the cementing strength is increased. The application progress of the solar cell array engineering is promoted.
The upper surface and the lower surface of the glass cover plate provided by the invention are of symmetrical structures. The symmetrical structure has two purposes, one is to increase the bonding strength of the cover glass to the solar cell and the bonding strength to the connection structure 5. And secondly, the symmetrical structure has good plane performance, which is beneficial to the packaging of the solar cell and ensures the smoothness of the product.
In conclusion, the high-strength glass cover plate for the solar cell circuit and the manufacturing method thereof provided by the invention can provide guarantee for engineering application of a semi-rigid solar cell array and provide a wide application market for a series of aircrafts such as low-orbit observation satellites, high-orbit satellites, space stations in China, Shenzhou spacecrafts, celestial palace series and the like. The technical innovation fills up the domestic blank, improves the application level of the semi-rigid solar cell array in China, and makes a contribution to national defense.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (6)
1. A high strength cover glass for a solar cell circuit, comprising: the glass cover plate comprises a glass cover plate body, rough surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body and bright surfaces symmetrically arranged on the upper surface and the lower surface of the glass cover plate body; the surface roughness of the rough surface is more than 10 mu m; the surface roughness of the bright surface is less than 5 nm;
the transmittance of the rough surface under the wavelength of 400 nm-1600 nm is less than 70%;
the rough surface is arranged in the middle of the upper surface and the lower surface of the glass cover plate body, and the bright surfaces are arranged around the rough surface.
2. The high-strength cover glass for a solar cell circuit according to claim 1, wherein the cover glass body has a rectangular, triangular, circular or trapezoidal shape.
3. A high strength cover glass for a solar cell circuit according to claim 1, wherein the roughened surface is attached to the attachment structure by an adhesive.
4. A method for manufacturing a high-strength cover glass for a solar cell circuit according to any one of claims 1 to 3, comprising the steps of:
step 1: cutting the glass ingot into sheets by adopting a laser technology to obtain a glass cover plate body;
step 2: local polishing treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a polishing technology to obtain a bright surface with the surface roughness less than 5 nm;
and step 3: local roughening treatment is carried out on the upper surface and the lower surface of the glass cover plate body by adopting a laser technology, and the surface roughness is larger than a rough surface of 10 mu m;
and 4, step 4: and cutting the glass cover plate body into a required shape by adopting a laser technology, and performing strengthening treatment to obtain the high-strength glass cover plate for the solar cell circuit.
5. The method of claim 4, wherein the step 4 is a step of strengthening the glass cover body by a heat treatment technique.
6. The method for manufacturing a high-strength cover glass for a solar cell circuit according to claim 5, wherein the heat treatment technique comprises the following specific steps: heating the glass cover plate body from room temperature to 450 ℃ at the speed of heating up to 50 ℃ per hour, preserving heat for 3 hours, cooling the glass cover plate body to room temperature at the speed of cooling down to 50 ℃ per hour, and finally annealing for 168 hours in a drying environment and forming.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971959.8A CN109103273B (en) | 2018-08-24 | 2018-08-24 | High-strength glass cover plate for solar cell circuit and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810971959.8A CN109103273B (en) | 2018-08-24 | 2018-08-24 | High-strength glass cover plate for solar cell circuit and manufacturing method thereof |
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| CN109103273A CN109103273A (en) | 2018-12-28 |
| CN109103273B true CN109103273B (en) | 2020-10-23 |
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| JP2007324011A (en) * | 2006-06-02 | 2007-12-13 | Ito Denshi Kogyo Kk | Manufacturing process of organic el panel |
| CN101826563B (en) * | 2009-03-03 | 2014-05-28 | E.I.内穆尔杜邦公司 | Packaging material and solar battery assembly made of same |
| JP5733600B2 (en) * | 2009-07-03 | 2015-06-10 | 日本電気硝子株式会社 | Device sealing body manufacturing method and element sealing body |
| CN102324446A (en) * | 2011-09-13 | 2012-01-18 | 上海太阳能电池研究与发展中心 | Preparation method of transparent conductive substrate used for film solar cell |
| CN202585463U (en) * | 2012-04-09 | 2012-12-05 | 河南思可达光伏材料股份有限公司 | High haze ultra-white glass having double suede face pattern |
| CN204204881U (en) * | 2014-12-11 | 2015-03-11 | 新奥光伏能源有限公司 | A kind of photovoltaic battery panel |
| CN205140998U (en) * | 2015-11-25 | 2016-04-06 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module that sea water resistance corrodes |
| CN107244812B (en) * | 2017-05-05 | 2020-01-21 | 东莞市圆美精密电子有限公司 | Secondary-strength toughened glass film and manufacturing method thereof |
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