CN114171619A - Solar thin film battery pack with micro-lens structure surface and preparation method thereof - Google Patents
Solar thin film battery pack with micro-lens structure surface and preparation method thereof Download PDFInfo
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- CN114171619A CN114171619A CN202111476973.9A CN202111476973A CN114171619A CN 114171619 A CN114171619 A CN 114171619A CN 202111476973 A CN202111476973 A CN 202111476973A CN 114171619 A CN114171619 A CN 114171619A
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- 239000010409 thin film Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 17
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 229920005591 polysilicon Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0543—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 refractive type, e.g. lenses
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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
- H01L31/02—Details
- H01L31/0236—Special surface textures
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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
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
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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
-
- 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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Abstract
The invention provides a micro-lens structure surface solar thin film battery pack and a preparation method thereof. According to the technical scheme, more light rays are focused on the solar panel by an effective physical means of processing the micro-structure array on the surface of the convex lens, the solar energy tracking system is replaced, the light energy utilization rate is improved, the environment is protected, an energy consumption control system is not required to be additionally arranged, and the miniaturization effect is achieved.
Description
Technical Field
The invention relates to the technical field of photovoltaic equipment, in particular to a solar thin film battery pack with a micro-lens structure surface and a preparation method thereof.
Background
Solar cell panel can be fine turns into the electric energy with solar energy, for more efficient collection and utilize solar energy, alleviates the problem that non-renewable energy is deficient, the method commonly used at present adopts solar energy automatic light tracking device to trail the sun, and this kind of mode of following spot adopts looking the sun and trails the mode that combines together with photoelectric tracking, and the accurate sun position of judging according to the data of system time and light intensity sensor collection is applicable to various weather conditions. The solar panel is driven by double shafts in a solar rotating mode, and the solar panel is pushed to rotate in the horizontal direction and the vertical direction by the aid of the speed reducing motor and the push rod motor, so that lighting efficiency is improved. However, this type of light-following device can perform light following, and can improve the solar energy received by the light-following device by approximately 40% compared with the fixed light-following, and can supply the collected solar energy to other power environments. However, the electric energy produced by the solar cell panel of the light following device is often far lower than the energy consumed by the solar light following system to control the moment arm of the revolute pair, so that the practicability of the solar light following system is not strong, and the automatic control system relates to electronic products such as chips and is easy to corrode and damage in outdoor operation.
The surface structure design of the microstructure optical functional element generally refers to that micron-sized grinding processing is carried out on a glass surface with a smooth surface or a concave-convex transparent glass surface, so that the surface of the microstructure optical functional element has a high aspect ratio and a micro topological geometry, and the physical and optical properties of the optical functional element are changed. Generally, a meniscus lens having a microstructure processed on its surface is called a microlens. Therefore, there is a need for an effective physical means of processing micro-structure array on the surface of convex lens to focus more light on the solar panel, and replace the solar light tracking system to improve the light energy utilization rate.
Disclosure of Invention
The invention aims to provide a solar thin film battery pack with a micro-lens structure surface and a preparation method thereof.
According to an object of the invention, the invention provides a solar thin film battery pack with a micro-lens structure surface, which comprises a convex lens and a thin film solar cell, wherein a micro-structure array is processed on the upper surface of the convex lens, and the thin film solar cell is adhered to the bottom surface of the convex lens.
Furthermore, the microstructure array comprises a plurality of microstructure units which are arranged in an array, and the shape of each microstructure unit is a triangular prism structure.
Further, the section of the triangular prism structure is an equilateral triangle.
Further, the sides of the equilateral triangle are 20 μm in length.
Furthermore, a groove for accommodating the thin film solar cell is formed in the bottom surface of the convex lens.
Further, the thin film solar cell is a polycrystalline silicon thin film solar cell.
According to another object of the present invention, the present invention provides a method for preparing a solar thin film battery with a micro-lens structure surface, comprising the following steps:
s1, processing a microstructure array on the surface of the convex lens by using a diamond grinding wheel, wherein the microstructure array is composed of a plurality of microstructure units which are arranged in an array manner, the shape of each microstructure unit is a triangular prism structure, and the section of each triangular prism structure is an equilateral triangle with the side length of 20 mu m;
and S2, attaching polycrystalline silicon thin film solar cells to the bottom surfaces of the micro lenses to form a micro lens structure surface solar thin film battery pack with a near-tracking system.
Furthermore, the material glass with small refractive index is selected as the material of the convex lens, so that the occurrence of total reflection is avoided.
Further, in S1, a groove for accommodating the polysilicon thin film solar cell is processed on the bottom surface of the convex lens.
Further, in S2, the polysilicon thin film solar cell is attached to the groove.
According to the technical scheme, more light rays are focused on the solar panel by an effective physical means of processing the micro-structure array on the surface of the convex lens, the solar energy light tracking system is replaced to improve the light energy utilization rate, the environment is protected, an energy consumption control system is not required to be additionally arranged, and the miniaturization effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of an embodiment of the present invention during processing;
FIG. 3 is a top view of an embodiment of the present invention as it is being processed;
FIG. 4 is a chart of experimental comparative data for an example of the present invention;
description of reference numerals: the device comprises a 1-convex lens, a 2-polycrystalline silicon thin film solar cell, a 3-microstructure unit, a 4-groove and a 5-diamond grinding wheel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, 2 and 2:
a solar thin-film battery pack with a micro-lens structure surface comprises a convex lens 1 and a polycrystalline silicon thin-film solar cell 2, wherein a micro-structure array is processed on the upper surface of the convex lens 1 and comprises a plurality of micro-structure units 3 which are arranged in an array mode, the micro-structure units 3 are triangular prism structures, and the cross sections of the triangular prism structures are equilateral triangles with the side length of 20 mu m. The bottom surface of the convex lens 1 is provided with a groove 4 for accommodating the polycrystalline silicon thin film solar cell, and the polycrystalline silicon thin film solar cell 2 is attached in the groove 4.
In order to facilitate the grinding processing of a machine tool and improve the obvious change of optical properties, the processing of a single microstructure on the surface of a lens is difficult to complete by the existing processing technology, the processing cost is too high, and the significance in practical application is not realized, so the invention adopts the processing technology of integrally processing the microstructure and realizes the aim of the invention in the form of a micro-lens array. Based on the above, the invention provides a preparation method of a solar thin film battery pack with a micro-lens structure surface, which comprises the following steps:
processing a microstructure array on the surface of a convex lens 1 by using a diamond grinding wheel 5, wherein the microstructure array is composed of a plurality of microstructure units 3 which are arranged in an array manner, the shape of each microstructure unit 3 is a triangular prism structure, and the section of each triangular prism structure is an equilateral triangle with the side length of 20 mu m; the diamond grinding wheel 5 is used as a cutting tool of the micro-structure array of the micro-lens, and meets the processing requirements of the micro-lens array such as arrangement mode, depth, shape and the like. And (3) attaching polycrystalline silicon thin film solar cells to the bottom surface of the micro lens to form a micro lens structure surface solar thin film battery pack with a near-tracking system.
The polycrystalline silicon thin film solar cell is attached to the surface of the bottom layer of the micro lens, so that a micro lens structure surface solar thin film battery pack with a near light following system is combined, a concave plane groove is generally designed at the installation position, and the size of the concave plane groove is suitable for the size of the glass bottom surface of the micro lens structure surface solar thin film battery pack.
The medium with larger refractive index has smaller critical angle, and the total reflection is easier to occur, so the material glass with small refractive index should be selected as the material of the convex lens during processing to avoid the loss of a large amount of light energy caused by total reflection.
The invention adopts an equilateral triangle triangular prism with the side length of 20um as the shape of the microstructure.
Compared with the solar thin film battery without the micro-structure array, the solar thin film battery with the micro-lens structure surface and the traditional solar thin film battery with the plane glass surface are subjected to contrast experiments, and the solar thin film battery with the micro-structure array on the surface is found that the current is increased by nearly 90% from 11mA to 20mA, and the voltage is increased by nearly 70% from 0.26V to 0.4V.
As shown in fig. 4, it was confirmed through experiments that the convex microlens array can change the optical characteristics of the lens and can be applied to the real life to improve the energy utilization rate by 70% -90%.
The solar energy tracking system is developed aiming at the defects of the solar energy tracking system, the traditional solar energy tracking system is additionally provided with an automatic control system, the inclination angle of the solar panel is adjusted, the incident light of the sun is kept vertical to the solar panel, namely the incident angle alpha is 0 degree, and the light energy utilization rate of the solar panel can be improved to be 20-40 percent. The solar light tracking system has high performance requirements on an automatic system and a motor, electric energy produced by a solar cell panel additionally provided with the system is far lower than energy consumed by a control revolute pair force arm of the solar light tracking system, the practicability of the solar light tracking system is poor, and the automatic control system relates to electronic products such as chips and is easy to corrode and damage in outdoor operation.
In order to overcome the defects, the invention uses an effective physical means of processing the micro-structure array on the surface of the convex lens to focus more light on the solar panel, replaces a solar light tracking system to improve the light energy utilization rate, is green and environment-friendly, does not need to additionally install a control system consuming energy, and plays a role in miniaturization. Meanwhile, the glass is originally a material capable of keeping a normal working state for a long time outdoors, and is suitable for various severe weathers and corrosion.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The solar thin-film battery pack with the micro-lens structure surface is characterized by comprising a convex lens and a thin-film solar cell, wherein a micro-structure array is processed on the upper surface of the convex lens, and the thin-film solar cell is adhered to the bottom surface of the convex lens.
2. The micro-lens structure surface solar thin film battery pack according to claim 1, wherein the micro-structure array comprises a plurality of micro-structure units arranged in an array, and the micro-structure units are triangular prism structures.
3. A microlens structured surface solar thin film battery as claimed in claim 2, wherein the triangular prism structure has an equilateral triangle in cross section.
4. A microlens structured surface solar thin film battery as claimed in claim 3, characterized in that the sides of the equilateral triangle are 20 μm.
5. The solar thin-film battery with a micro-lens structure surface as claimed in claim 1, wherein the bottom surface of the convex lens is provided with a groove for accommodating the thin-film solar cell.
6. A microlens structure surface solar thin film battery as claimed in claim 1, wherein the thin film solar cell is a polysilicon thin film solar cell.
7. A method for preparing a solar thin film battery pack with a micro-lens structure surface is characterized by comprising the following steps:
s1, processing a microstructure array on the surface of the convex lens by using a diamond grinding wheel, wherein the microstructure array is composed of a plurality of microstructure units which are arranged in an array manner, the shape of each microstructure unit is a triangular prism structure, and the section of each triangular prism structure is an equilateral triangle with the side length of 20 mu m;
and S2, attaching polycrystalline silicon thin film solar cells to the bottom surfaces of the convex lenses to form a micro-lens structure surface solar thin film battery pack with a near-tracking system.
8. The method of claim 7, wherein a glass with a low refractive index is selected as the material of the convex lens to avoid total reflection.
9. The method for manufacturing a micro-lens structure surface solar thin film battery pack according to claim 7, wherein in S1, a groove for accommodating the polysilicon thin film solar cell is processed on the bottom surface of the convex lens.
10. The method of claim 9, wherein in step S2, the polysilicon thin film solar cell is attached to the groove.
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CN202111476973.9A CN114171619A (en) | 2021-12-06 | 2021-12-06 | Solar thin film battery pack with micro-lens structure surface and preparation method thereof |
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Citations (1)
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CN101510565A (en) * | 2009-04-01 | 2009-08-19 | 苏州大学 | Solar cell synergistic film |
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CN101510565A (en) * | 2009-04-01 | 2009-08-19 | 苏州大学 | Solar cell synergistic film |
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