CN102208473B - Low-power concentrating power generation module of solar power generation - Google Patents
Low-power concentrating power generation module of solar power generation Download PDFInfo
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- CN102208473B CN102208473B CN201110141948.5A CN201110141948A CN102208473B CN 102208473 B CN102208473 B CN 102208473B CN 201110141948 A CN201110141948 A CN 201110141948A CN 102208473 B CN102208473 B CN 102208473B
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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
Abstract
The invention relates to a low-power concentrating solar power generation system, in particular to a low-power concentrating power generation module of solar power generation. The difference is that the low-power concentrating power generation module of the solar power generation comprises a paraboloid condenser, a first reflecting mirror and a solar energy receiver which covers the external side of the first reflecting mirror, wherein the first reflecting mirror is a conical reflecting mirror arranged on the internal side of the solar energy receiver; a main body of the solar energy receiver has a cover shell structure; a solar cell matched with the conical reflecting mirror is arranged on the circumferential internal side surface of the solar energy receiver main body; parallel lights are emitted to a reflecting conical surface of the conical reflecting mirror after being converged by the paraboloid condenser; the converged lights are uniformly reflected to the solar cell positioned on the external side of the reflecting conical surface by the reflecting conical surface; and the solar energy is converted to electric energy by the solar cell.
Description
Technical field
The present invention relates to a kind of low-concentration type solar power system, especially a kind of solar power generation low-concentration electrification component.
Background technology
Whether be greater than or less than and equal 1 times of natural daylight intensity according to impinging upon day luminous intensity on photocell, solar energy equipment can be divided into light-focusing type and the large class of non-light-focusing type two.Common non-light condensing solar energy power generation device is to be made up of polysilicon solar cell plate.The day luminous intensity impinging upon on polycrystal silicon cell plate equals 1 times of daylight light intensity.Light condensing solar energy power generation device gathers 10 times by optical system by daylight and is irradiated on photocell after 1000 times again.Concentrating solar system needs single shaft or double-shaft sun tracking servo system to guarantee normal work and the high conversion efficiency of system conventionally.
Sunlight is converged at photocell surface by light condensing solar energy power generation device two circular parabolic reflectors or the sheet type Fresnel Lenses of using more at present.Light condensing solar energy power generation device divides low power and high power concentrator two classes, and high power concentrator generally adopts the folded formula epitaxial material of more piece as solar cell, can obtain very high optoelectronic transformation efficiency, but solar cell cost is very high.Low-concentration technology, generally still adopt silicon wafer or other lower cost materials as solar cell, in the time adopting parabolic reflector to assemble solar energy, reduce optically focused multiplying power and reduce between shading-area having contradiction, but silicon wafer solar cell surface daylight light intensity generally should not exceed 10 times.
Concentrating solar generating equipment has higher cost performance, this is because compared with non-light condensing solar energy power generation device, light condensing solar energy power generation device uses expensive photoelectric conversion material still less, thereby make the technical process of solar power plant itself more clean, more green.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of solar power generation low-concentration electrification component, and its unit energy output cost is low, function admirable.
The present invention addresses the above problem by the following technical programs: a kind of solar power generation low-concentration electrification component, and it comprises parabolic condenser, be positioned at the first speculum on the primary optical axis of parabolic condenser, cover on the solar receiver in the first speculum outside, the first speculum is the pyramid type speculum that is arranged on solar receiver inner side, and the main body of solar receiver is casing structure, is arranged on the circumferential medial surface of solar receiver main body with the solar battery sheet of pyramid type speculum phase configuration, directional light incides the reflection conical surface of described conical mirror after parabolic condenser converges, this reflection conical surface evenly reflexes on the solar battery sheet that is positioned at its outside converging light, solar battery sheet converts solar energy into electrical energy, the first described speculum is the tapered speculum of open circles, circular cone drift angle is 15 °-65 °, on the described reflection conical surface, be evenly coated with wide spectral reflectance optical thin film, the optically focused multiplying power of described assembly is adjusted by the distance between described the first speculum and the solar battery sheet of solar receiver inner side and the circular cone drift angle of the first speculum.
A kind of solar power generation low-concentration electrification component, it comprises parabolic condenser, be positioned at the first speculum and the second speculum on the primary optical axis of parabolic condenser, cover on the solar receiver in the first speculum outside, the first speculum is the pyramid type speculum that is arranged on solar receiver inner side, the main body of solar receiver is casing structure, is arranged on the circumferential medial surface of solar receiver main body with the solar battery sheet of the reflection conical surface phase configuration of pyramid type speculum, described directional light first reflects through the second speculum after parabolic condenser converges, and then incide the reflection conical surface of described the first speculum, this reflection conical surface evenly reflexes on the solar battery sheet that is positioned at its outside converging light, solar battery sheet converts solar energy into electrical energy, the first described speculum is the tapered speculum of open circles, circular cone drift angle is 15 °-65 °, on the described reflection conical surface, be evenly coated with wide spectral reflectance optical thin film, the optically focused multiplying power of described assembly is adjusted by the distance between described the first speculum and the solar battery sheet of solar receiver inner side and the circular cone drift angle of the first speculum.
By above scheme, the main body of described solar receiver is hollow prism type casing structure, and medial surface is 4-12.
By above scheme, also comprise optical heat-insulating filter, described optical heat-insulating filter is arranged on the light incident side of solar receiver.
By above scheme, solar cell is enclosed in solar receiver inside and outside air isolation by described optical heat-insulating filter.
By above scheme, described optical heat-insulating filter has by high index film material, low-refraction coating materials and is alternately coated with the assembly of thin films forming.
By above scheme, the circumferential medial surface of described solar receiver main body is provided with the good metal profile of thermal conductivity, and solar battery sheet is arranged in metal profile.
A kind of solar power generation low-concentration electrification component, it comprises parabolic condenser, solar receiver, optical heat-insulating filter, described optical heat-insulating filter is arranged on the light incident side of solar receiver; The main body of solar receiver is hollow pyramids type casing structure, and solar battery sheet is arranged on the circumferential multiple medial surfaces of solar receiver main body; Directional light first incides on the solar battery sheet of solar receiver inside after parabolic condenser converges again by the filtration of optical heat-insulating filter, and solar battery sheet converts solar energy into electrical energy.
Contrast prior art, the useful advantage of several technical schemes of the present invention is as follows respectively:
The light of the different angles that 1, the present invention collects parabolic condenser by the reflection conical surface of pyramid type speculum spreads out, then receives generating by the solar receiver that covers on the first speculum outside; The optically focused multiplying power of assembly of the present invention can be adjusted by the distance between described the first speculum and the solar battery sheet of solar receiver inner side and the circular cone drift angle of the first speculum.This invention modular construction is simple, and cost is lower, has reduced the monochromatic photronic cost of electricity-generating of light-focusing type.
The light of the different angles that 2, the present invention collects parabolic condenser, through spreading out by the reflection conical surface of pyramid type speculum after reflection for the second time, finally receives generating by the solar receiver that covers on the first speculum outside again.The optically focused multiplying power of assembly of the present invention can be adjusted by the distance between described the first speculum and the solar battery sheet of solar receiver inner side and the circular cone drift angle of the first speculum.This invention modular construction is simple, and cost is lower, has reduced the monochromatic photronic cost of electricity-generating of light-focusing type.
3, the main body of solar receiver is hollow pyramids type casing structure, and solar battery sheet is arranged on the circumferential multiple inner side plane of main body; Directional light first incides on the solar battery sheet of hollow pyramids type solar receiver inside after parabolic condenser converges again by the filtration of optical heat-insulating filter, and solar battery sheet converts solar energy into electrical energy.The present invention adopts optical heat-insulating and unconventional Physical temperature-lowering, designs simplification, and cost, has further reduced the monochromatic photronic cost of electricity-generating of light-focusing type.
Accompanying drawing explanation
Fig. 1 is the structural representation of hollow prism type casing structure solar receiver of the present invention, the first speculum;
Fig. 2 is hollow pyramids type casing structure solar receiver of the present invention and optical heat-insulating filter sheet structure schematic diagram;
Fig. 3 is the cell piece structural representation of excision forming of the present invention;
Fig. 4 is the spectral pattern of optical heat-insulating filter;
Fig. 5 is the overall structure schematic diagram of the embodiment of the present invention one;
Fig. 6 is the overall structure schematic diagram of the embodiment of the present invention two;
Fig. 7 is the overall structure schematic diagram of the embodiment of the present invention three.
Embodiment
Be described further below in conjunction with the accompanying drawing specific embodiment of the invention.
Embodiment mono-: Fig. 6 is the overall structure schematic diagram of the embodiment of the present invention one; As shown in Figure 6, a kind of solar power generation low-concentration electrification component, it comprises parabolic condenser 1, the first speculum 4, covers on the solar receiver 3 in the first speculum 4 outsides; The first speculum 4 is for being arranged on the pyramid type speculum inside solar receiver, the main body of solar receiver 3 is hollow prism type casing structure, is arranged in the circumferential multiple inner side plane of solar receiver 3 main bodys with the solar battery sheet of pyramid type speculum phase configuration; Directional light incides the reflection conical surface of described conical mirror after parabolic condenser 1 converges, and this reflection conical surface evenly reflexes on the solar battery sheet that is positioned at its outside converging light, and solar battery sheet converts solar energy into electrical energy.
Preferably, can optical heat-insulating filter 2 be set at the light incident side of solar receiver 3, Fig. 4 is the spectral pattern of optical heat-insulating filter.Concrete, optical heat-insulating filter 2 has by high index film material, low-refraction coating materials and is alternately coated with the assembly of thin films forming.For example: high index film material is selected TiO
2, low-refraction coating materials is selected SiO
2.
Further, optical heat-insulating filter 2 can be enclosed in solar cell solar receiver 3 inside and outside air isolation;
Concrete, the circular cone drift angle of the first speculum 4 is 15 °-65 °, is evenly coated with wide spectral reflectance optical thin film on the described reflection conical surface, preferred, described wide spectral reflectance optical thin film is golden film or aluminium film.
Concrete, the first speculum 4 is positioned on the primary optical axis 1-1 of parabolic condenser 1, and the distance between the first speculum 4 and parabolic condenser 1 is adjustable.
Preferably, the optically focused multiplying power of described assembly is adjusted by the distance between described the first speculum 4 and the solar battery sheet of solar receiver 1 inner side and the circular cone drift angle of the first speculum 4.
Preferably, the circumferential inner side plane of solar receiver 3 main bodys is provided with the good metal profile of thermal conductivity, and solar battery sheet is arranged in metal profile.Metal profile can be selected aluminium sheet.
Preferably, the circumferential inner side plane of solar receiver 3 main bodys is 4-12, and the respective numbers of solar battery sheet is also 4-12.
Preferably, in order to reduce weight, the first speculum 4 can be selected the tapered speculum of open circles of inner hollow out.
Embodiment bis-: Fig. 5 is the overall structure schematic diagram of the embodiment of the present invention two; As shown in Figure 5, a kind of solar power generation low-concentration electrification component, it comprises parabolic condenser 1, the first speculum 4, the second speculum 5, covers on the solar receiver 3 in the first speculum 4 outsides; The first speculum 4 is for being arranged on the pyramid type speculum of solar receiver 3 inner sides, the main body of solar receiver 3 is hollow prism type casing structure, is arranged on the circumferential medial surface of solar receiver 3 main bodys with the solar battery sheet of the reflection conical surface phase configuration of the first speculum 4; Described directional light first reflects through the second speculum 5 after parabolic condenser 1 converges, and then incide the reflection conical surface of described the first speculum 4, this reflection conical surface evenly reflexes on the solar battery sheet that is positioned at its outside converging light, and solar battery sheet converts solar energy into electrical energy.Embodiment bis-is that with the difference of embodiment mono-light of the different angles of parabolic condenser collection will be through spreading out by the reflection conical surface of pyramid type speculum after reflection for the second time again.The second speculum 5 is selected parabolic concentrator speculum, and curvature and the first speculum 4 are different.The second speculum 5 is positioned on the primary optical axis 1-1 of focus below of the first speculum 4, the concave surface of the first speculum 4 and the second speculum 5 leads to, both central points and its focus are located along the same line, and the reflective surface area of the first speculum 4 is 500 times of reflective surface area of the second speculum 5.
Preferably, can optical heat-insulating filter 2 be set at the light incident side of solar receiver 3, Fig. 4 is the spectral pattern of optical heat-insulating filter.Concrete, optical heat-insulating filter 2 has by high index film material, low-refraction coating materials and is alternately coated with the assembly of thin films forming.For example: high index film material is selected TiO
2, low-refraction coating materials is selected SiO
2.
Further, optical heat-insulating filter 2 can be enclosed in solar cell solar receiver 3 inside and outside air isolation;
Concrete, the circular cone drift angle of the first speculum 4 is 15 °-65 °, is evenly coated with wide spectral reflectance optical thin film on the described reflection conical surface, preferred, described wide spectral reflectance optical thin film is golden film or aluminium film.
Concrete, the first speculum 4 is positioned on the primary optical axis 1-1 of parabolic condenser 1, and the distance between the first speculum 4 and parabolic condenser 1 is adjustable.
Preferably, the optically focused multiplying power of described assembly is adjusted by the distance between described the first speculum 4 and the solar battery sheet of solar receiver 1 inner side and the circular cone drift angle of the first speculum 4.
Preferably, the circumferential inner side plane of solar receiver 3 main bodys is provided with the good metal profile of thermal conductivity, and solar battery sheet is arranged in metal profile.Metal profile can be selected aluminium sheet.
Preferably, the circumferential inner side plane of solar receiver 3 main bodys is 4-12, and the respective numbers of solar battery sheet is also 4-12.
Preferably, in order to reduce weight, the first speculum 4 can be selected the tapered speculum of open circles of inner hollow out.
Embodiment tri-: Fig. 7 is the overall structure schematic diagram of the embodiment of the present invention three; As shown in Figure 7, a kind of solar power generation low-concentration electrification component, it comprises parabolic condenser 1, solar receiver 3, optical heat-insulating filter 2, described optical heat-insulating filter 2 is arranged on the light incident side of solar receiver 3; The main body of solar receiver 3 is hollow pyramids type casing structure, and solar battery sheet is arranged on the circumferential multiple medial surfaces of solar receiver 3 main bodys; Directional light first incides on the solar battery sheet of solar receiver 3 inside after parabolic condenser 1 converges again by 2 filtrations of optical heat-insulating filter, and solar battery sheet converts solar energy into electrical energy.
As shown in Figure 7, solar receiver 3 inner surfaces are settled the crystal silicon solar cell sheet of upper excision forming.Parabolic condenser 1, solar receiver 3, optical heat-insulating filter 2 are all positioned on a straight line, are connected as one by support.
Automatic tracking system makes speculum all the time just to the sun, and the solar battery sheet that the radius of curvature, solar receiver 3 that suitably designs parabolic condenser 1 can make sunlight after parabolic condenser 1 reflection all be positioned at solar receiver 3 main body inner wall in the open top size of near putting position hot spot or the hot spot of parabolic condenser 1, hollow pyramids type casing structure etc. receives.Light after this process converges increases anti-membrane filtration by the anti-film of infrared increasing, ultraviolet light on optical heat-insulating filter 2 and removes most infrared lights and ultraviolet light, finally projects and on solar cell, carries out opto-electronic conversion.The system configuration of embodiment tri-is simple, and light path loss is less.
Fig. 1 is the structural representation of hollow prism type casing structure solar receiver of the present invention, the first speculum; Fig. 2 is hollow pyramids type casing structure solar receiver of the present invention and optical heat-insulating filter sheet structure schematic diagram; Optical heat-insulating filter 2 is for being placed in the glass material that plates reflectance coating of hollow prism type casing structure solar receiver or hollow pyramids type casing structure solar receiver bottom surface, and object is to carry out optical heat-insulating for system.As shown in Figure 1, the monocrystalline silicon battery sheet of corresponding size is posted in hollow prism type casing structure inwall side, and the outer surface of the first speculum 4 is the gold-plated reflection conical surface, the inner hollow out of the first speculum 4.As shown in Figure 2, hollow pyramids type casing structure solar receiver posts the monocrystalline silicon battery sheet of corresponding size in 6 places, wall side therein.
Solar receiver in each embodiment can be according to actual conditions, configuration cooling system.
Fig. 4 is the spectral pattern of optical heat-insulating filter surface filter coating; Go out the spectral pattern of optical heat-insulating filter surface filter coating according to the sunlight curve of spectrum in figure and crystalline silicon spectral absorption characteristics Curve Design, because infrared light and ultraviolet light are very little to solar energy system contribution, but the main source of system heating, so adopt this optical filtering pattern can reduce system temperature, improve battery efficiency.Optical heat-insulating filter principle design thus, 530nm is high pass state to 1000nm, 380nm is limited low pass to the ultraviolet light of 500nm, more than 1000nm infrared and near infrared light, alternately be coated with according to optical heat-insulating filter design thickness the assembly of thin films forming with high index of refraction and low-index material, as high index film material is selected TiO
2, low-refraction coating materials is selected SiO
2.
The first speculum 4 in the various embodiments described above, the second speculum 5, solar receiver 3, parabolic condenser 1 are arranged in a straight line, can be connected as one by support.
In embodiment bis-, automatic tracking system makes the first speculum 4 all the time just to the sun, and the radius of curvature and the putting position that suitably design the second speculum 5 can make the sunlight after parabolic condenser 1 converges all be reflected by the second speculum 5 and become directional light or converge light.Converging light after secondary increases anti-membrane filtration by the anti-film of infrared increasing and ultraviolet light and removes most infrared lights and ultraviolet light, then come by the first speculum 4 scatterings of gold-plated or other wide spectral reflectance optical thin film material, project on the solar cell of hollow prism type casing structure solar receiver inner side and carry out opto-electronic conversion.As without secondary reflection (because the more difficult coupling of the confocal pattern of secondary reflection), also can implement according to embodiment mono-, the sunlight after parabolic condenser 1 converges is directly scattered on the solar battery sheet in its outside by pyramid type speculum after increasing anti-glass through infrared and ultraviolet light.
Various embodiments of the present invention tool has the following advantages:
Optically focused pattern that low power is adjustable, embodiment mono-and embodiment bis-all can be by regulating the distance between the first speculum 4 and solar battery sheet, can be in the situation that shading-area be less by the top angle of taper and the openings of sizes that regulate hollow pyramids type casing structure solar receiver 3 in embodiment tri-, in proper range, regulate optically focused ratio.
Solar battery sheet in each embodiment uses the photovoltaic cell material of monocrystalline silicon or other high efficiency, low costs, and unit energy output cost is low.
Can application surface in each embodiment be coated with infrared and ultraviolet and increase the optical heat-insulating filter of anti-film, thereby effectively reduce system temperature, alleviated the burden of refrigerating system, the more light practicality of system.Optical heat-insulating filter, also by all crystal-silicon battery slices and outside air isolation, is conducive to improve the cell piece life-span simultaneously.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. a solar power generation low-concentration electrification component, is characterized in that: it comprises parabolic condenser, be positioned at the first speculum and the second speculum on the primary optical axis of parabolic condenser, cover on solar receiver, the optical heat-insulating filter in the first speculum outside, the first speculum is the pyramid type speculum that is arranged on solar receiver inner side, the main body of solar receiver is casing structure, is arranged on the circumferential medial surface of solar receiver main body with the solar battery sheet of the reflection conical surface phase configuration of pyramid type speculum, directional light first reflects through the second speculum after parabolic condenser converges, and then incide the reflection conical surface of described the first speculum, this reflection conical surface evenly reflexes on the solar battery sheet that is positioned at its outside converging light, solar battery sheet converts solar energy into electrical energy, the first described speculum is the tapered speculum of open circles, circular cone drift angle is 15 °-65 °, on the described reflection conical surface, be evenly coated with wide spectral reflectance optical thin film, the optically focused multiplying power of described assembly is adjusted by the distance between described the first speculum and the solar battery sheet of solar receiver inner side and the circular cone drift angle of the first speculum, described optical heat-insulating filter is arranged on the light incident side of solar receiver, solar cell is enclosed in solar receiver inside and outside air isolation by described optical heat-insulating filter, described optical heat-insulating filter has by high index film material, low-refraction coating materials and is alternately coated with the assembly of thin films forming, the main body of described solar receiver is hollow prism type casing structure, and medial surface is 4-12, optical heat-insulating filter is high pass state at 530nm to 1000nm, and 380nm is limited low pass to the ultraviolet light of 500nm, more than 1000nm infrared and near infrared light.
2. according to the solar power generation low-concentration electrification component of claim 1, it is characterized in that: the circumferential medial surface of described solar receiver main body is provided with the good metal profile of thermal conductivity, and solar battery sheet is arranged in metal profile.
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| US10168459B2 (en) * | 2016-11-30 | 2019-01-01 | Viavi Solutions Inc. | Silicon-germanium based optical filter |
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| CN108322182A (en) * | 2018-03-21 | 2018-07-24 | 巫国辉 | A kind of concentrating solar receiving unit and solar battery apparatus |
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| CN109510584A (en) * | 2018-12-14 | 2019-03-22 | 王美民 | A kind of three-dimensional solar battery structure |
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| CN110943684B (en) * | 2019-12-13 | 2021-02-02 | 云南桑帕尔光伏科技有限公司 | Adjustable solar power generation device with high power generation |
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Effective date of registration: 20171130 Address after: 430074 No. 84, Fu Shan Road, East Lake hi tech Development Zone, Hubei, Wuhan, China Co-patentee after: JIANGSU HUAXING LASER TECHNOLOGY Co.,Ltd. Patentee after: AOV ENERGY TECHNOLOGIES Co.,Ltd. Co-patentee after: Guancheng Steel Address before: 430074 No. 84, Fu Shan Road, East Lake hi tech Development Zone, Hubei, Wuhan, China Patentee before: AOV ENERGY TECHNOLOGIES Co.,Ltd. |
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Effective date of registration: 20230529 Address after: 430000 room 06, 13 / F, unit 6, building 6, phase II R & D building, laser engineering design headquarters, No. 3, Guanggu Avenue, Donghu New Technology Development Zone, Wuhan, Hubei 201825 Patentee after: AOV ENERGY TECHNOLOGIES Co.,Ltd. Patentee after: Guan Chenggang Address before: No. 84, Fujia Village, Tuanshan Road, Donghu High tech Development Zone, Wuhan City, Hubei Province, 430074 Patentee before: AOV ENERGY TECHNOLOGIES Co.,Ltd. Patentee before: JIANGSU HUAXING LASER TECHNOLOGY Co.,Ltd. Patentee before: Guan Chenggang |
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