CN203859722U - Solar photovoltaic power generation module group of light-condensation/light-dividing type - Google Patents
Solar photovoltaic power generation module group of light-condensation/light-dividing type Download PDFInfo
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- CN203859722U CN203859722U CN201420257913.7U CN201420257913U CN203859722U CN 203859722 U CN203859722 U CN 203859722U CN 201420257913 U CN201420257913 U CN 201420257913U CN 203859722 U CN203859722 U CN 203859722U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model provides a solar photovoltaic power generation module group of a light-condensation/light-dividing type, and the module group comprises a plurality of subunits. The subunits comprise a Fresnel lens, a band-pass optical filter, and a secondary optical unit. The subunits also comprise a silicon battery piece and three GaInP/GaInAs/Ge battery pieces, which are respectively disposed at focal spots in the transmission and reflection directions of the band-pass optical filter of the Fresnel lens. The light-receiving surface of the silicon battery piece and the light-receiving surfaces of the three GaInP/GaInAs/Ge battery pieces are respectively provided with a secondary optical unit. According to the utility model, the technology of spatial spectrum separation is introduced for achieving the high-efficiency photovoltaic application. The module group is simple in structure and the technical scheme of optical processing is easy to achieve. Moreover, the sharing of heating devices of different battery pieces is achieved, and the application range is wide.
Description
Technical field
The utility model relates to solar energy power generating field, and concrete is a kind of optically focused-light splitting type solar energy power generating module.
Background technology
Known, concentrating solar photovoltaic generating technology adopts the concentrators such as Fresnel Lenses and dish-shaped mirror surface, simultaneously by single shaft or biaxial sun-tracking tracking servo, the convergence of realization to vertical incidence sunlight, thereby significantly reduce photovoltaic material usable floor area, reduce photovoltaic generating system energy consumption, and can realize very high photoelectric conversion efficiency.
Concentrating solar photovoltaic generating technology adopts the integrated many knot III-V compounds of group solar cells of monolithic as its core devices that generates electricity conventionally, the photovoltaic material that this battery is respectively tied different energy gaps by it absorbs for the different spectral components of sunlight, thereby realize, the wide spectrum of sunlight is absorbed, so have very high photoelectric conversion efficiency, the photoelectric conversion efficiency of GaInP/GaInAs/Ge tri-junction batteries can reach more than 40% at present.
For GaInP/GaInAs/Ge tri-junction batteries, the photogenerated current of Ge battery is larger than the photogenerated current of other two knots battery, because three knot batteries are connected in series, therefore the minimum current of its whole output current in each sub-battery determines, and exceeding the part of this minimum current, other sub-battery output current will lose by series resistance energy transform into heat energy, this while has increased again the heat radiation pressure of battery, finally affects the overall efficiency of photovoltaic generating system.
Realization is to utilize optical element first solar spectrum to be carried out on locus to separation to the another kind of technology trends of high-efficiency photovoltaic conversion efficiency, and then adopts the photovoltaic material of different energy gaps to absorb conversion.This technical scheme can avoid further increasing the semiconductor technology complexity of multijunction solar cell PN junction quantity introducing and the lifting of cost, increased again the flexibility of selecting photovoltaic material, need not consider that the integrated multijunction solar cell of monolithic respectively ties the Lattice Matching problem between material and base material.The integrated multijunction cell of monolithic and space light splitting technology are organically combined and will further promote photovoltaic conversion efficiency.
Utility model content
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of optically focused-light splitting type solar energy power generating module, it is characterized in that: comprise a plurality of subelements, described subelement comprises Fresnel Lenses, the logical optically filtering sheet of band, secondary optics unit, crystal-silicon battery slice and GaInP/GaInAs/Ge tri-junction battery sheets; On described crystal-silicon battery slice and GaInP/GaInAs/Ge tri-junction battery sheets, be equipped with secondary optics unit, described crystal-silicon battery slice is positioned over Fresnel Lenses at the focal spot place of the logical optically filtering sheet transmission direction of band, and described GaInP/GaInAs/Ge tri-junction battery sheets are positioned over Fresnel Lenses at the focal spot place of the logical optically filtering sheet reflection direction of band.
Described crystal-silicon battery slice is connected with radiating tube respectively with GaInP/GaInAs/Ge tri-junction battery sheets, and described radiating tube is provided with radiating fin.
Described Fresnel Lenses arranges with angle at 45 °, band logical optically filtering sheet surface.
Comprise 4N subelement, N is positive integer.
Described secondary optics unit is that inner surface is silver-plated, and top is intercepted the inverted pyramid shape structure of logical light.
Described crystal-silicon battery slice is monocrystalline silicon or polycrystalline silicon battery plate.
Described GaInP/GaInAs/Ge tri-junction battery sheets are based on Lattice Matching Lattice-mateched, LM or distortion Metamorphic, GaInP/GaInAs/Ge tri-junction batteries of MM technology.
The passband of the described logical optically filtering sheet of band is 900-1050nm.
The beneficial effects of the utility model are: a kind of optically focused-light splitting type solar energy power generating module is mainly for the efficient application of the integrated GaInP/GaInAs/Ge three-joint solar cell of monolithic, adopt spatial spectral isolation technics, part spectral separation corresponding to three junction battery Ge battery absorption spectra scopes in solar spectrum is out turned by crystal silicon battery and received, reduce the thermal losses of three junction battery sheets, further improve the photovoltaic conversion efficiency of module; The one, need not reduce the thermal losses that inside battery electric current causes by changing the integrated multijunction solar cell structure of monolithic (increasing the PN junction of particular bandgap width material), but realizing photovoltaic, introducing spatial spectral isolation technics efficiently utilizes; The 2nd, this optically focused-light splitting type solar energy power generating modular structure is simple, and optical treatment scheme is easy to realize, and realizes sharing of different cell piece heat abstractors, adapts to wide.
Accompanying drawing explanation
Fig. 1. be the structural representation of the two generator units of the utility model;
Fig. 2 .1 is outward appearance vertical view of the present utility model;
Fig. 2 .2 is outward appearance upward view of the present utility model;
Fig. 3 .1 is 4 unit outward appearance vertical views of the present utility model;
Fig. 3 .2 is 4 unit outward appearance upward views of the present utility model;
Fig. 4. be 4 cellular construction schematic diagrames of the present utility model;
Fig. 5. be 4 cellular construction perspective views of the present utility model;
Fig. 6. be the spectral response schematic diagram that the utility model relates to associated batteries sheet and the logical optically filtering sheet of band.
In figure: 1-Fresnel Lenses; The logical optically filtering sheet of 2-band; 3-secondary optics unit; 4-radiating fin; 5-crystal-silicon battery slice; 6-GaInP/GaInAs/Ge, tri-junction battery sheets; 7-radiating tube.
Embodiment
Below in conjunction with further describing the technical program with reference to accompanying drawing, the example of described embodiment is shown in the drawings, wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish, but this description is only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
As Fig. 1, a kind of optically focused-light splitting type solar energy power generating module, comprise a plurality of subelements, described subelement comprises Fresnel Lenses 1, the logical optically filtering sheet 2 of band, secondary optics unit 3, crystal-silicon battery slice 5 and GaInP/GaInAs/Ge tri-junction battery sheets 6; On described crystal-silicon battery slice 5 and GaInP/GaInAs/Ge tri-junction battery sheets 6, be equipped with secondary optics unit 3, described crystal-silicon battery slice 5 is positioned over Fresnel Lenses 1 at the focal spot place of logical optically filtering sheet 2 transmission direction of band, and described GaInP/GaInAs/Ge tri-junction battery sheets 6 are positioned over Fresnel Lenses 1 at the focal spot place of logical optically filtering sheet 2 reflection directions of band.
Described crystal-silicon battery slice 5 is connected with radiating tube 7 respectively with GaInP/GaInAs/Ge tri-junction battery sheets 6, and described radiating tube 7 is provided with radiating fin 4.
Described Fresnel Lenses 1 arranges with the surperficial angle at 45 ° of the logical optically filtering sheet 2 of band.
Comprise 4N subelement, N is positive integer.As Fig. 4, in a described 4N subelement, every 2 subelements are inwardly symmetrical arranged with reflection direction, as Fig. 5,2 adjacent bands lead between the crystal-silicon battery slice 5 in the subelement that optically filtering sheet 2 angles are identical and are connected by radiating tube 7, and radiating fin 4 is equipped with in radiating tube 7 symmetrical centre positions; Between GaInP/GaInAs/Ge tri-junction battery sheets 6 in 2 * 2 adjacent subelements, by U-shaped radiating tube, connected, radiating fin 4 is equipped with in the symmetrical centre position of U-shaped radiating tube.Described radiating fin 4 can be respectively for two kinds of different cell piece designs, and adopt radiating tube radiating mode, radiating fin is wrapped in radiating tube 7 outsides, radiating tube 7 utilizes operation material heat radiation wherein, the heat that radiating tube 7 is derived is further led in air by radiating fin 4, and the operation material in radiating tube 7 is highly purified water.
As Fig. 4, described secondary optics unit 3 designs for two kinds of different batteries respectively, and its shape is all the inverted pyramid that top is intercepted.The inner surface of secondary optics unit 3 is silver-plated, there is very high reflectivity, the converging ray receiving further can be reflexed to respective battery surface, increase cell piece for the receiving angle of incident ray, improve the light spot energy uniformity on respective battery sheet surface simultaneously, finally promote the generating efficiency of cell piece and photovoltaic system.
Described crystal-silicon battery slice 5 is monocrystalline silicon or polycrystalline silicon battery plate.
Described GaInP/GaInAs/Ge tri-junction battery sheets 6 are based on Lattice Matching Lattice-mateched, LM or distortion Metamorphic, GaInP/GaInAs/Ge tri-junction batteries of MM technology.As shown in Figure 6, crystal-silicon battery slice 5 has with the Ge battery in GaInP/GaInAs/Ge6 tri-junction batteries 6 the response spectrum scope partially overlapping.
The passband of the described logical optically filtering sheet 2 of band is 900-1050nm.
Operation principle of the present utility model is:
1 pair of vertical incidence sunlight of Fresnel Lenses is assembled, logical optically filtering sheet 2 light splitting of converging ray band before focusing on, the minute surface placement at 45 ° of the logical optically filtering sheet 2 of this band and Fresnel Lenses 1, transmitted light beam is along former direction focusing, and folded light beam along continuous straight runs focuses on.Transmission and folded light beam are processed by secondary optics unit 3 respectively, finally by the crystal-silicon battery slice 5 and GaInP/GaInAs/Ge tri-junction battery sheets 6 absorptions that are positioned over transmission and reflection direction focal spot place, carry out opto-electronic conversion respectively.Adjacent subunits in this structure has symmetry, therefore can simplify the structural design of cell piece heat-sink unit, as Fig. 3 .1, and Fig. 3 .2, the radiating fin of different generator unit respective battery sheets can form shared.Two crystal silicon battery in adjacent cells share a radiating fin; The radiating fin 4 of GaInP/GaInAs/Ge tri-junction battery sheet 6 correspondences is connected by U-shaped heat pipe, and 4 GaInP/GaInAs/Ge, the tri-junction battery sheets in adjacent cells share a heat-sink unit, and as Fig. 2 .1, Fig. 2 .2, forms multiple unit power generation module group.
In the utility model embodiment, the spectral characteristic of the logical optically filtering sheet 2 of described band is had to certain requirement, its passband wave-length coverage is 900-1050nm, is contained in the intersection of crystal silicon battery and Ge battery response spectrum.Fig. 6 has provided associated batteries sheet that the utility model relates to and the spectral response schematic diagram of the logical optically filtering sheet of band.Owing to being to be connected in series between each knot battery in GaInP/GaInAs/Ge tri-junction batteries, therefore the minimum current of the final output current of three junction batteries in each knot battery limited.Because the output current of Ge battery generally can obviously be greater than the output current of other two knots battery, so the final output current of three junction batteries is limited by the electric current of the sub-battery of GaInP or the sub-battery of GaInAs, and this part electric current that Ge battery has more will be converted into heat energy by series resistance losses, this will cause battery efficiency to reduce, and increases the heat radiation requirement of battery simultaneously.The optimal path addressing this problem is by filtering the partial response spectrum of Ge battery with logical optically filtering sheet, make its electric current reduce to the series connection output current of three junction batteries, and the spectral region filtering being the pass band width of the logical optically filtering sheet 2 of band.Therefore need to determine according to the difference that in GaInP/GaInAs/Ge tri-junction batteries, Ge battery current is connected between Limited Current with three junction batteries passband position and the bandwidth of optically filtering sheet, spectral component by the filtering of filter plate passband is absorbed by crystal silicon battery, guaranteed that photovoltaic generating system is to the making full use of of solar spectrum, and the remarkable photoelectric conversion efficiency of photovoltaic generating system.
In sum, be only the preferred embodiment of the utility model, with this, do not limit protection range of the present utility model, all equivalences of doing according to the utility model the scope of the claims and description change and modify, within being all the scope that the utility model patent contains.
Claims (8)
1. optically focused-light splitting type solar energy power generating module, it is characterized in that: comprise a plurality of subelements, described subelement comprises Fresnel Lenses (1), the logical optically filtering sheet (2) of band, secondary optics unit (3), crystal-silicon battery slice (5) and GaInP/GaInAs/Ge tri-junction battery sheets (6); On described crystal-silicon battery slice (5) and GaInP/GaInAs/Ge tri-junction battery sheets (6), be equipped with secondary optics unit (3), described crystal-silicon battery slice (5) is positioned over Fresnel Lenses (1) at the focal spot place of logical optically filtering sheet (2) transmission direction of band, and described GaInP/GaInAs/Ge tri-junction battery sheets (6) are positioned over Fresnel Lenses (1) at the focal spot place of logical optically filtering sheet (2) reflection direction of band.
2. a kind of optically focused-light splitting type solar energy power generating module according to claim 1, it is characterized in that: described crystal-silicon battery slice (5) is connected with radiating tube (7) respectively with GaInP/GaInAs/Ge tri-junction battery sheets (6), and described radiating tube (7) is provided with radiating fin (4).
3. a kind of optically focused-light splitting type solar energy power generating module according to claim 2, is characterized in that: described Fresnel Lenses (1) arranges with the surperficial angle at 45 ° of the logical optically filtering sheet (2) of band.
4. a kind of optically focused-light splitting type solar energy power generating module according to claim 3, is characterized in that: comprise 4N subelement, N is positive integer.
5. according to the arbitrary described a kind of optically focused-light splitting type solar energy power generating module of claim 1-4, it is characterized in that: described secondary optics unit (3) is silver-plated for inner surface, and top is intercepted the inverted pyramid shape structure of logical light.
6. according to the arbitrary described a kind of optically focused-light splitting type solar energy power generating module of claim 1-4, it is characterized in that: described crystal-silicon battery slice (5) is monocrystalline silicon or polycrystalline silicon battery plate.
7. according to the arbitrary described a kind of optically focused-light splitting type solar energy power generating module of claim 1-4, it is characterized in that: described GaInP/GaInAs/Ge tri-junction battery sheets (6) are based on Lattice Matching Lattice-mateched, LM or distortion Metamorphic, GaInP/GaInAs/Ge tri-junction batteries of MM technology.
8. according to the arbitrary described a kind of optically focused-light splitting type solar energy power generating module of claim 1-4, it is characterized in that: the passband of the described logical optically filtering sheet (2) of band is 900-1050nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257913.7U CN203859722U (en) | 2014-05-20 | 2014-05-20 | Solar photovoltaic power generation module group of light-condensation/light-dividing type |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420257913.7U CN203859722U (en) | 2014-05-20 | 2014-05-20 | Solar photovoltaic power generation module group of light-condensation/light-dividing type |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467650A (en) * | 2014-12-19 | 2015-03-25 | 江苏宇昊新能源科技有限公司 | Concentrating photovoltaic power generation assembly |
| CN104663266A (en) * | 2015-02-26 | 2015-06-03 | 中国科学技术大学先进技术研究院 | Sunlight comprehensive utilization system of plant factory |
| CN105932953A (en) * | 2016-06-14 | 2016-09-07 | 北京信息科技大学 | Photovoltaic module based on spectrums |
| CN106169909A (en) * | 2016-09-27 | 2016-11-30 | 杨兰英 | A kind of Salar light-gathering mechanism |
| CN107093982A (en) * | 2017-03-31 | 2017-08-25 | 中国科学院广州能源研究所 | A kind of method for electric generation using solar energy and device of the dual generating of secondary condensation |
-
2014
- 2014-05-20 CN CN201420257913.7U patent/CN203859722U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467650A (en) * | 2014-12-19 | 2015-03-25 | 江苏宇昊新能源科技有限公司 | Concentrating photovoltaic power generation assembly |
| CN104663266A (en) * | 2015-02-26 | 2015-06-03 | 中国科学技术大学先进技术研究院 | Sunlight comprehensive utilization system of plant factory |
| CN104663266B (en) * | 2015-02-26 | 2017-02-01 | 中国科学技术大学先进技术研究院 | Sunlight comprehensive utilization system of plant factory |
| CN105932953A (en) * | 2016-06-14 | 2016-09-07 | 北京信息科技大学 | Photovoltaic module based on spectrums |
| CN106169909A (en) * | 2016-09-27 | 2016-11-30 | 杨兰英 | A kind of Salar light-gathering mechanism |
| CN106169909B (en) * | 2016-09-27 | 2018-04-27 | 杨兰英 | A kind of Salar light-gathering mechanism |
| CN107093982A (en) * | 2017-03-31 | 2017-08-25 | 中国科学院广州能源研究所 | A kind of method for electric generation using solar energy and device of the dual generating of secondary condensation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20160520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |