CN103095176A - Concentrator photovoltaic double generation assembly - Google Patents
Concentrator photovoltaic double generation assembly Download PDFInfo
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- CN103095176A CN103095176A CN2011103334710A CN201110333471A CN103095176A CN 103095176 A CN103095176 A CN 103095176A CN 2011103334710 A CN2011103334710 A CN 2011103334710A CN 201110333471 A CN201110333471 A CN 201110333471A CN 103095176 A CN103095176 A CN 103095176A
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Abstract
The invention relates to a concentrator photovoltaic generation device, in particular to a concentrator photovoltaic double generation assembly which comprises a parabolic dish condenser and is characterized by further comprising a band-pass optical filter sheet, a gallium arsenide battery piece and a silicon battery piece. the band-pass optical filter sheet is a first shortwave pass filter sheet or a high pass optical filter sheet, and parallel light is gathered and enters the band-pass optical filter sheet through the parabolic dish condenser. The parabolic dish condenser passes through or reflects gathered solar light according to wave segments so as to form high power condensation focal spots on the upper surface and low power condensation focal spots on the lower surface. The gallium arsenide battery piece is arranged in an area in which the high power condensation focal spots are located, and the silicon battery piece is arranged in an area in which the low power condensation focal spots are located. The concentrator photovoltaic double generation assembly can simultaneously meet requirements of low power condensation and high power condensation.
Description
Technical field
Patent of the present invention relates to the concentrating solar generating equipment, specifically the two electrification components of a kind of concentrating solar.
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 of the polysilicon solar cell plate.The day luminous intensity that impinges upon on the polycrystal silicon cell plate equals 1 times of daylight light intensity.Light condensing solar energy power generation device gathers 10 times by optical system with daylight and shines on photocell after 1000 times again.The concentrating solar system needs single shaft or double-shaft sun tracking servo system to guarantee normal operation and the high conversion efficiency of system usually.
The concentrating solar generating equipment has higher cost performance, this is because compare the photoelectric conversion material of light condensing solar energy power generation device use costliness still less with non-light condensing solar energy power generation device, thereby the technical process of solar power plant itself is more cleaned, more green.
At present light condensing solar energy power generation device uses Fresnel Lenses or parabolic reflector that sunlight is converged at the photocell surface more, and photocell is stacked in order to obtain higher optoelectronic transformation efficiency for many knots.Another new development trend is to adopt optics light splitting and the photronic way of multiple single-unit to obtain higher optoelectronic transformation efficiency on the basis of optically focused recently.In rear a kind of scheme, different unijunction photocell materials is fit to different optically focused ratios, and particularly the silicon wafer battery can not bear too high optical power density.Therefore the solar cell power generation system that needs development a kind of energy simultaneous adaptation low power and high power concentrator demand.
Summary of the invention
Patent of the present invention is for above-mentioned light splitting concentrating solar electricity generation system, has proposed the two electrification components of concentrating solar of a kind of low power and high power combination.
for realizing above goal of the invention, technical scheme of the present invention is as follows: the two electrification components of concentrating solar, comprise parabolic condenser, its difference is: also comprise the logical optical filter of band, the GaAs cell piece, silicon cell, the logical optical filter of band is a kind of in the first short-pass filter plate or high pass optical filter, directional light incides the logical optical filter of band after parabolic condenser converges, thereby the logical optical filter of band is pressed wave band with the sunlight of assembling and is passed through or reflect thereon, the below forms respectively high power concentrator focal spot and low-concentration focal spot, the GaAs cell piece is arranged on high power concentrator focal spot region, silicon cell is arranged on low-concentration focal spot region.
By above scheme, the logical optical filter of described band is the first short-pass filter plate, described parabolic condenser circle centre position has the sunlight beam orifice, silicon cell is arranged on the below of sunlight beam orifice, the GaAs cell piece is arranged on the top of the first short-pass filter plate, the sunlight that sees through the first short-pass filter plate is projected to the GaAs cell piece, and reverberation is projected to silicon cell by the sunlight beam orifice of parabolic condenser.
By above scheme, comprise that also hollow pyramids receives body, each medial surface that hollow pyramids receives body is provided with silicon cell, the logical optical filter of described band is the high pass optical filter with curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body, directional light is incident to hollow pyramids by the high pass optical filter and receives silicon cell in body after parabolic condenser converges, the light that the high pass optical filter is reflected back is got on the gallium arsenide solar cell of high pass optical filter below.
by above scheme, also comprise the second short-pass filter plate, hollow pyramids receives body, each medial surface that hollow pyramids receives body is provided with silicon cell, the logical optical filter of described band is the high pass optical filter with curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body, described parabolic condenser circle centre position has the sunlight beam orifice, the second short-pass filter plate is arranged on below the sunlight beam orifice, the sunlight that sees through the high pass optical filter is projected to hollow pyramids and receives the interior silicon cell of body, the light that the high pass optical filter is reflected back is projected to the second short-pass filter plate by the sunlight beam orifice of parabolic condenser, the second short-pass filter plate is divided into visible waveband two wave bands again, absorb with GaAs and GaInP material cell plate respectively, form multiple electric system.
By above scheme, the cut-off wavelength of described the first short-pass filter plate is 850nm, and the sunlight of 280-850nm is absorbed generating by the GaAs cell piece of top, and the sunlight reflection of 850-1200nm sees through the concentrator lower opening and absorbed generating by crystal-silicon battery slice.
By above scheme, the cut-off wavelength of described high pass optical filter is 850nm, light wave reflection less than 850nm in the sunlight of condenser mirror collection generates electricity to the GaAs cell piece below light path, and all the other coupling light waves greater than 850nm are generated electricity by silicon cells reception that pyramid reception body medial surface is settled by the high pass optical filter again.
By above scheme, the cut-off wavelength of described high pass optical filter is 850nm, coupling light wave greater than 850nm receives by pyramid the silicon cell reception generating that the body medial surface is settled again by the high pass optical filter, the second short-pass filter plate is divided into 280-550nm and 550-850nm with the visible light of the 280-850nm wave band that reflects, and the cell panel with GaInP and GaAs material receives respectively.
By above scheme, described hollow pyramids receives the focal spot place that body is positioned at parabolic condenser, and drift angle is adjustable, and the quantity of pyramid medial surface is 6-12.
By above scheme, the outer setting that described hollow pyramids receives body has cooling device.
By above scheme, described cooling device is fan, adds a solar panel in received the territory, lateral areas that body blocks sunlight by described hollow pyramids, and the solar panel electricity is used for drive fan, thereby receives the body heat radiation to hollow pyramids.
The contrast prior art, useful technique effect of the present invention is: the present invention adopts optical filter that spectrum is divided into two, receive secondary electricity generation with monocrystalline silicon and GaAs material battery respectively, work technique is simplified greatly, cost reduces greatly, has further reduced the monochromatic photronic cost of electricity-generating of light-focusing type.
On the basis of the above, absorption line for GaInP and GaAs, add a short-pass optical filter, the visible light of the 280-850nm wave band that reflects is divided into 280-500nm and 550-850nm, the cell panel with GaInP and GaAs material receives respectively.
The present invention utilizes spectro-film to carry out realizing double-generator and three generators after light splitting, and photoelectric conversion efficiency is high.And utilize respectively GaAs (and GaInP) and monocrystalline silicon to realize simultaneously high power and low-concentration generating in same system, combine the advantage of efficient and price, can significantly improve the cost performance of solar power system.
Hollow pyramids receives body, can regulate the optically focused ratio by regulating its drift angle and openings of sizes in proper range.
When low-concentration, use the photovoltaic cell material of monocrystalline silicon or other high efficiency, low costs, unit energy output cost is low;
Use high-pass filter and short wave pass filter light splitting, for monocrystalline silicon and GaAs material absorption spectrum, repeatedly utilize sunlight, realize two electricity generation systems, the filter area is little, and the filter cost has been shared equally in high power and low-concentration situation, so not high.
The air cooling system that utilizes shading-area to make has alleviated the loaded down with trivial details of refrigerating system, the more light practicality of system.And have the self adaptation characteristics, namely sunlight is stronger, generates electricity more the time, and refrigeration is larger.
Description of drawings
Fig. 1 is patent pyramid receiving plane of the present invention and infrared and high-pass filtering film glass material structure schematic diagram;
Fig. 2 is the cell piece structural representation of patent excision forming of the present invention;
Fig. 3 the present invention relates to the short-pass filter coating design diagram that cut-off wavelength is 850nm;
Fig. 4 the present invention relates to the high pass filter coating design diagram that cut-off wavelength is 850nm;
Fig. 5 the present invention relates to the short-pass filter coating design diagram that cut-off wavelength is 550nm
Fig. 6 is the two concrete overall work schematic diagrames one of electricity generation system of patent low power of the present invention and high power concentrator type;
Fig. 7 is the two concrete overall work schematic diagrames two of electricity generation system of patent low power of the present invention and high power concentrator type;
Fig. 8 is the two concrete overall work schematic diagrames three of electricity generation system of patent low power of the present invention and high power concentrator type.
Embodiment
The invention will be further described below in conjunction with embodiment that accompanying drawing provides.
Fig. 1 is pyramid receiving plane 3 and high-pass filtering film glass material 2 structural representations of the present embodiment two, high-pass filtering film glass material 2 is the glass material of 850nm for the cut-off wavelength that is placed in pyramid receiving plane bottom surface in Fig. 1, for system optics heat insulation.The silicon cell 11 of corresponding size of excision forming is sticked as Fig. 2 in the inwall side of pyramid receiving plane, and the pyramid receiving plane outside adds cooling system according to actual conditions, and the cell panel of air cooling system can be cut into the right figure of Fig. 2.
Fig. 3, Fig. 4 are for being fit to silicon crystal photovoltaic material and GaAs material absorption Spectrum characteristic design curve.By the sunlight curve of spectrum (light blue) in figure, crystalline silicon spectral absorption characteristics curve (redness), GaAs spectral absorption characteristics curve (blueness), design surperficial filter coating absorption Spectrum characteristic curve (green), GaAs is high to 850nm wavelength transformation efficiency to wave band 550nm, monocrystalline silicon is higher to 1100nm wavelength transformation efficiency to 850nm, so adopt this optical filtering pattern can improve battery efficiency, reduces the cell piece working temperature.Filter A, B is principle design thus, alternately is coated with high index of refraction and low-index material the assembly of thin films that forms according to design thickness, as chooses TiO2 and SiO2 increases respectively high index of refraction and the low-refraction coating materials of anti-film as preparation.What use in scheme two is not common optically flat filter, but certain curvature (relevant with the curvature of concentrator) is arranged, and one can so that converge the basic vertical incidence of light, increase transmitance; Two can pass through the position size of adjusting curvature adjusting hot spot etc.
Fig. 5 is for being fit to GaInP and GaAs material absorption Spectrum characteristic design curve.By the sunlight curve of spectrum (light blue) in figure, GaInP spectral absorption characteristics curve (orange), GaAs spectral absorption characteristics curve (blueness), design surperficial filter coating absorption Spectrum characteristic curve (green), GaAs is high to 850nm wavelength transformation efficiency to wave band 550nm, GaInP is higher to 550nm wavelength transformation efficiency to 280nm, so adopt this optical filtering pattern can improve battery efficiency, reduces simultaneously the cell piece working temperature.
at first from Integral Thought, the lower embodiment of the present invention is described: the two electrification components of concentrating solar, comprise parabolic condenser 1, the logical optical filter 2 of band, GaAs cell piece 7, silicon cell 11, the logical optical filter 2 of band is a kind of in the first short-pass filter plate or high pass optical filter, directional light incides the logical optical filter 2 of band after parabolic condenser 1 converges, thereby the logical optical filter 2 of band is pressed wave band with the sunlight of assembling and is passed through or reflect thereon, the below forms respectively high power concentrator focal spot and low-concentration focal spot, GaAs cell piece 7 is arranged on high power concentrator focal spot region, silicon cell 11 is arranged on low-concentration focal spot region.
Fig. 6 is the system light path figure of the present embodiment one, the logical optical filter 2 of band is the first short-pass filter plate, described parabolic condenser 1 circle centre position has the sunlight beam orifice, silicon cell 11 is arranged on the below of sunlight beam orifice, GaAs cell piece 7 is arranged on the top of the first short-pass filter plate, the sunlight that sees through the first short-pass filter plate is projected to GaAs cell piece 7, and reverberation is projected to silicon cell 11 by the sunlight beam orifice of parabolic condenser 1.Concrete, short wave-pass filter is divided into two the sunlight of assembling, and forms the high power concentrator spot of 1/100-1/1000 and the low-concentration spot of 1/10-1/100 at upper and lower respectively.Cut-off wavelength through design the first short-pass filter plate is 850nm, and the sunlight of 280-850nm is absorbed generating by the GaAs cell piece of top, and the sunlight reflection of 850-1200nm sees through parabolic condenser 1 lower opening and absorbed generating by silicon cell 11.
Fig. 7 is the system light path figure of the present embodiment two, as shown in Figure 7, each medial surface that hollow pyramids receives body 3 is provided with silicon cell 11, the high pass optical filter of the logical optical filter 2 of described band for having curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body 3, directional light is incident to hollow pyramids by the high pass optical filter and receives silicon cell 11 in body 3 after parabolic condenser 1 converges, the light that the high pass optical filter is reflected back is got on GaAs cell piece 7 below the high pass optical filter.In Fig. 7, silicon cell 11, GaAs cell piece 7 are provided with the cooling device with its phase configuration according to actual needs when work, be connected with air-cooled driving line 6 between the cooling device of upper and lower, parabolic condenser 1, the logical optical filter 2 of band, 2 hollow pyramids receive body 3 and are positioned on straight line, are connected as one by support.
Fig. 8 is the system light path figure of the present embodiment two, on scheme one, two basis, absorption line for GaInP and GaAs, add the second short-pass filter plate 8, it designs according to Fig. 4, the visible light of the 280-850nm wave band that reflects is divided into 280-550nm and 550-850nm, receives with GaInP cell panel 9 and GaAs cell panel 10 respectively.specific embodiment electrification components as two in: concentrating solar, it comprises parabolic condenser 1, the logical optical filter 2 of band, GaAs cell piece 7, silicon cell 11, the second short-pass filter plate, hollow pyramids receives body 3, each medial surface that hollow pyramids receives body 3 is provided with silicon cell 11, the high pass optical filter of the logical optical filter 2 of described band for having curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body, the circle centre position of described parabolic condenser 1 has the sunlight beam orifice, the second short-pass filter plate 8 is arranged on below the sunlight beam orifice, the sunlight that sees through the high pass optical filter is projected to hollow pyramids and receives the interior silicon cell 11 of body, the light that the high pass optical filter is reflected back is projected to the second short-pass filter plate by the sunlight beam orifice of parabolic condenser 1, the second short-pass filter plate is divided into visible waveband two wave bands again, absorb with GaInP cell panel 9 and GaAs cell panel 10 respectively, form multiple electric system.
Automatic tracking system makes speculum all the time over against the sun, suitably the radius of curvature of design parabolic condenser 1 and hollow pyramids receive the putting position of body 3 bottom high pass optical filters, hot spot, openings of sizes etc. can make the sunlight part after parabolic condenser 1 reflection be received the solar battery sheet reception of body 3 inboards by hollow pyramids, and the reflecting part is realized by the high pass optical filter of light path below.In order to guarantee the optical filtering efficient of high pass optical filter, the angle of incident light as far as possible little (being not more than 20 °) is so in this process, the focus of parabolic reflector needs relatively high.Light after the present invention is converged by parabolic condenser 1 carries out opto-electronic conversion through transmission with reflecting on the solar cell that projects respectively on hollow pyramids reception body 3 receiving planes inboards and/or dull and stereotyped receiving plane.System configuration is simple, and optical loss is less, and when the filter making was better, loss can be less than 2%.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the 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 (10)
1. two electrification components of concentrating solar, comprise parabolic condenser, it is characterized in that: also comprise the logical optical filter of band, the GaAs cell piece, silicon cell, the logical optical filter of band is a kind of in the first short-pass filter plate or high pass optical filter, directional light incides the logical optical filter of band after parabolic condenser converges, thereby the logical optical filter of band is pressed wave band with the sunlight of assembling and is passed through or reflect thereon, the below forms respectively high power concentrator focal spot and low-concentration focal spot, the GaAs cell piece is arranged on high power concentrator focal spot region, silicon cell is arranged on low-concentration focal spot region.
2. two electrification components of concentrating solar as claimed in claim 1, it is characterized in that: the logical optical filter of described band is the first short-pass filter plate, described parabolic condenser circle centre position has the sunlight beam orifice, silicon cell is arranged on the below of sunlight beam orifice, the GaAs cell piece is arranged on the top of the first short-pass filter plate, the sunlight that sees through the first short-pass filter plate is projected to the GaAs cell piece, and reverberation is projected to silicon cell by the sunlight beam orifice of parabolic condenser.
3. two electrification components of concentrating solar as claimed in claim 1, it is characterized in that: comprise that also hollow pyramids receives body, each medial surface that hollow pyramids receives body is provided with silicon cell, the logical optical filter of described band is the high pass optical filter with curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body, directional light is incident to hollow pyramids by the high pass optical filter and receives silicon cell in body after parabolic condenser converges, the light that the high pass optical filter is reflected back is got on the gallium arsenide solar cell of high pass optical filter below.
4. two electrification components of concentrating solar as claimed in claim 1, it is characterized in that: also comprise the second short-pass filter plate, hollow pyramids receives body, each medial surface that hollow pyramids receives body is provided with silicon cell, the logical optical filter of described band is the high pass optical filter with curvature, the high pass optical filter is arranged on the bottom that hollow pyramids receives body, described parabolic condenser circle centre position has the sunlight beam orifice, the second short-pass filter plate is arranged on below the sunlight beam orifice, the sunlight that sees through the high pass optical filter is projected to hollow pyramids and receives the interior silicon cell of body, the light that the high pass optical filter is reflected back is projected to the second short-pass filter plate by the sunlight beam orifice of parabolic condenser, the second short-pass filter plate is divided into visible waveband two wave bands again, absorb with GaAs and GaInP material cell plate respectively, form multiple electric system.
5. two electrification components of concentrating solar as claimed in claim 2, it is characterized in that: the cut-off wavelength of described the first short-pass filter plate is 850nm, the sunlight of 280-850nm is absorbed generating by the GaAs cell piece of top, and the sunlight reflection of 850-1200nm sees through the concentrator lower opening and absorbed generating by crystal-silicon battery slice.
6. two electrification components of concentrating solar as claimed in claim 3, it is characterized in that: the cut-off wavelength of described high pass optical filter is 850nm, light wave reflection less than 850nm in the sunlight of condenser mirror collection generates electricity to the GaAs cell piece below light path, and all the other coupling light waves greater than 850nm are generated electricity by silicon cells reception that pyramid reception body medial surface is settled by the high pass optical filter again.
7. two electrification components of concentrating solar as claimed in claim 3, it is characterized in that: the cut-off wavelength of described high pass optical filter is 850nm, coupling light wave greater than 850nm receives by pyramid the silicon cell reception generating that the body medial surface is settled again by the high pass optical filter, the second short-pass filter plate is divided into 280-550nm and 550-850nm with the visible light of the 280-850nm wave band that reflects, and the cell panel with GaInP and GaAs material receives respectively.
8. two electrification components of concentrating solar as described in claim 3 or 4, it is characterized in that: described hollow pyramids receives the focal spot place that body is positioned at parabolic condenser, and drift angle is adjustable, and the quantity of pyramid medial surface is 6-12.
9. two electrification components of concentrating solar as described in claim 3 or 4, it is characterized in that: the outer setting that described hollow pyramids receives body has cooling device.
10. two electrification components of concentrating solar as claimed in claim 9, it is characterized in that: described cooling device is fan, add a solar panel in a territory, lateral areas of being blocked sunlight by described hollow pyramids reception body, the solar panel electricity is used for drive fan, thereby receives the body heat radiation to hollow pyramids.
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Cited By (5)
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| CN105452655A (en) * | 2013-05-29 | 2016-03-30 | 沙特***石油公司 | High efficiency solar power generator for offshore applications |
| CN105932953A (en) * | 2016-06-14 | 2016-09-07 | 北京信息科技大学 | Photovoltaic module based on spectrums |
| CN106887997A (en) * | 2017-03-29 | 2017-06-23 | 浙江晶科能源有限公司 | A kind of dispersion photovoltaic generating system |
| CN109114827A (en) * | 2018-08-21 | 2019-01-01 | 河海大学常州校区 | A kind of slot light collection PV/T hybrid system |
| CN116961565A (en) * | 2023-07-26 | 2023-10-27 | 上海交通大学 | Device and method for regulating sunlight utilization rate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105452655A (en) * | 2013-05-29 | 2016-03-30 | 沙特***石油公司 | High efficiency solar power generator for offshore applications |
| CN111287921A (en) * | 2013-05-29 | 2020-06-16 | 沙特***石油公司 | High efficiency solar power generator for offshore applications |
| CN105932953A (en) * | 2016-06-14 | 2016-09-07 | 北京信息科技大学 | Photovoltaic module based on spectrums |
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| CN109114827A (en) * | 2018-08-21 | 2019-01-01 | 河海大学常州校区 | A kind of slot light collection PV/T hybrid system |
| CN116961565A (en) * | 2023-07-26 | 2023-10-27 | 上海交通大学 | Device and method for regulating sunlight utilization rate |
| CN116961565B (en) * | 2023-07-26 | 2024-05-07 | 上海交通大学 | Device and method for regulating sunlight utilization rate |
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