CN104113279A - Condensing solar energy photovoltaic power generating device - Google Patents
Condensing solar energy photovoltaic power generating device Download PDFInfo
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- CN104113279A CN104113279A CN201310132615.5A CN201310132615A CN104113279A CN 104113279 A CN104113279 A CN 104113279A CN 201310132615 A CN201310132615 A CN 201310132615A CN 104113279 A CN104113279 A CN 104113279A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
A condensing solar energy photovoltaic power generating device disclosed by the present invention comprises a supporting rack, at least three condensing element, and at least three photoelectric converters. The photoelectric converters are arranged on the supporting rack around a central axis, and the condensing elements are arranged around the central axis, wherein the condensing elements respectively possess the condensing focal points separated from each other, and the distance between each condensing focal point and the central axis is less than a half of the distance between a geometric center of a light accepting area of each condensing element and the central axis; the number of the photoelectric converters is equal to the number of the condensing elements, and the photoelectric converters are in one-to-one correspondence with the condensing elements, and are arranged at the condensing focal points of the corresponding condensing elements respectively, and the light accepting surfaces of the photoelectric converters face the corresponding condensing elements. The condensing solar energy photovoltaic power generating device is compact in structure, does not need a box-type structure any longer, and enables the material usage amount to be reduced, thereby reducing the cost. The condensing solar energy photovoltaic power generating device enables the maintainability, the service life and the solar energy utilization efficiency to be improved.
Description
Technical field
The present invention relates to Application of Solar Energy field, particularly relate to a kind of focusing solar energy photovoltaic generator.
Background technology
Solar-energy photo-voltaic cell is main mainly with monocrystalline silicon and polysilicon now, and its utilization ratio is commonly 15%～19%; Another kind of photovoltaic cell is III-V family concentration type photovoltaic battery, multi-junction gallium arsenide for example, and its photoelectric conversion efficiency can reach and surpass 40%, but GaAs cell device cost is higher, needs high zoom and focus could realize cost and rationalizes.
The application apparatus complex structure of existing concentration type photovoltaic battery, cost is high, is not easy to safeguard.A class wherein, the general optically focused focus of beam condensing unit is positioned in the projection at collective optics center, for example, the patent No. is the disclosed plane reflection concentrating solar photovoltaic generating of the Chinese utility model patent of ZL200620093715.7 equipment, the patent No. is the disclosed a kind of reflective light-gathering solar photovoltaic power generation assembly with double parabolic cylinders of the Chinese utility model patent of ZL200920269864.8, the disclosed high concentration solar photovoltaic of Chinese utility model patent household system and device that the patent No. is ZL200920158062.X.Light path design in these devices makes between each condensation photovoltaic battery the spacing of distance and collective optics wide, thereby supporting construction is necessary for case structure, thereby has increased material usage and cost; The photovoltaic cell being arranged on case structure is suitable for disposable installation, thereby be not easy to change, safeguards; And because distance is larger between each condensation photovoltaic battery, the heat on condensation photovoltaic battery is not easy to focus utilization, and the conductor length that connects each condensation photovoltaic battery is also longer, is not easy to reduce costs.Wherein another kind of, as the patent No. disclosed focusing solar energy photovoltaic generator of Chinese utility model patent that is ZL201120271422.4, wherein adopt centralized parabolic concentrator device, easily because of the mismachining tolerance of paraboloidal mirror, cause between each photovoltaic cell and be subject to light inhomogeneous again, thereby system efficiency when photovoltaic cell series connection is formed to series boosting circuit is declined to some extent, have to increase balancing circuitry to keep the ideal operation voltage of each photovoltaic cell, thereby increased cost.
Summary of the invention
Based on this, be necessary the problem existing for prior art, a kind of focusing solar energy photovoltaic generator is provided, this device is by rational light path design, make the compact conformation of whole focusing solar energy photovoltaic generator, no longer need case structure, reduced materials'use amount, thereby reduced cost; And the in uniform light of each optical-electrical converter, working point is close, can meet well the requirement of series boosting.
The object of the invention is to be achieved through the following technical solutions:
A focusing solar energy photovoltaic generator, comprises bracing frame, at least three collective opticses and at least three optical-electrical converters; The direction of longitudinal central axis along described focusing solar energy photovoltaic generator of support frame as described above, described at least three optical-electrical converters are arranged on support frame as described above around described central axis, and described at least three collective opticses are around described central axis setting; Wherein, each collective optics has each other discrete optically focused focus, and the geometric center that described in each, optically focused focus is less than the light area of collective optics described in each to the distance of described central axis is to half of the distance of described central axis; Described optical-electrical converter equates with the quantity of collective optics, and described optical-electrical converter is corresponding one by one with collective optics, is arranged at respectively the optically focused focus place of corresponding collective optics, and the sensitive surface of described optical-electrical converter is towards its corresponding collective optics.
In an embodiment, described in each, optical-electrical converter is uniformly distributed around described central axis therein; Described in each, optically focused focus equates to the distance of described central axis; Described in each, about equally, area discrepancy is no more than 10% to the area of the light area of collective optics.
In an embodiment, described collective optics is single condenser mirror therein; The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance of the projection of the geometric center of the light area that projects to described condenser mirror of the optically focused focus of described condenser mirror is less than the distance of projection on summit of the close described central axis that projects to described condenser mirror of geometric center of the light area of described condenser mirror.
Therein in an embodiment, the condenser mirror group that described collective optics is comprised of a plurality of condenser mirrors, the described a plurality of condenser mirrors in each condenser mirror group have same optically focused focus; The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance of the projection of the geometric center of the light area that projects to described condenser mirror group of the optically focused focus of described condenser mirror group is less than the distance of projection on summit of the close described central axis that projects to described condenser mirror group of geometric center of the light area of described condenser mirror group.
Therein in an embodiment, described optical-electrical converter is single concentration type photovoltaic battery or a plurality of concentration type photovoltaic batteries of arranging for array-like.
In an embodiment, described in each, optical-electrical converter comprises secondary condensation device and single concentration type photovoltaic battery therein; Wherein, described secondary condensation device is transmission-type guide type secondary condensation device or reflective secondary condensation device; The light entrance face of described secondary condensation device is as the light entrance face of described optical-electrical converter; The light gasing surface optics of described secondary condensation device is connected to described single concentration type photovoltaic battery.
In an embodiment, described optical-electrical converter comprises a plurality of concentration type photovoltaic batteries that secondary condensation device and array-like are arranged therein; Wherein, described secondary condensation device is the reflective secondary condensation device that has the transmission-type guide type secondary condensation device of a plurality of smooth delivery outlets or have a plurality of smooth delivery outlets; The light entrance face of described secondary condensation device is as the light entrance face of described optical-electrical converter; A plurality of smooth delivery outlet of described secondary condensation device correspondingly optics is connected to described a plurality of concentration type photovoltaic battery.
In an embodiment, also comprise the heat abstractor identical with the quantity of optical-electrical converter therein; Described heat abstractor is arranged on support frame as described above, and is connected with corresponding optical-electrical converter respectively.
In an embodiment, described heat abstractor is active cycle formula liquid-cooling heat radiator or passive circulation type liquid cooling and radiation device therein; The solar energy that described in each, part or all of failing of optical-electrical converter is converted to electric energy is taken away by the cooling liquid in described heat abstractor with form of heat; Support frame as described above is tubulose, and the liquid after the heating in described heat abstractor is drawn by being arranged on the pipeline of the inside of support frame as described above.
In an embodiment, also comprise additional circuits and protective circuit therein, described in each, optical-electrical converter is electrically connected to described additional circuits and protective circuit; Support frame as described above is tubulose, and the electric energy that described in each, optical-electrical converter is exported is drawn by being arranged on the wire of the inside of support frame as described above.
According to focusing solar energy photovoltaic generator of the present invention, because collective optics is corresponding one by one with optical-electrical converter, each collective optics is around the intensive layout of this device central axis, the optically focused focus of each collective optics departs from each collective optics center, central axis to this device is drawn close, corresponding optical-electrical converter is also drawn close mutually, each optical-electrical converter can share same set of supporting construction, no longer need case structure, whole apparatus structure is compact, reduced materials'use amount, thereby reduced cost, and avoided the life-span of case structure short, the problems such as easy dewfall.
Because each collective optics has each other discrete optically focused focus, each optical-electrical converter is in optically focused focal position, the sunray that reception is converged, because the sunlight area that each collective optics receives equates, so with collective optics one to one each optical-electrical converter can receive basically identical sunlight energy, thereby each optical-electrical converter working point is close, can meet the requirement of series boosting.Simultaneously, according to the present invention, separate collective optics and optical-electrical converter can independently be changed, because all elements are all cheap and replaceable, the maintainability performance of system significantly promotes, change normally part safeguard under system entire life close to can forever using, therefore this device has improved maintainability performance and useful life.
The heat that the present invention utilizes liquid cooling apparatus to produce in carrying out solar energy transfer process optical collector dispels the heat, in the solar energy receiving, the unconverted energy for electric energy is taken away with the form of heat liquid that is cooled, further the entrained heat of cooling liquid is used, improved the utilization ratio of solar energy, total solar energy utilization ratio can surpass 60%-70%.
Accompanying drawing explanation
By reference to detailed description below, by reference to the accompanying drawings, can be more complete understand the present invention, wherein:
Fig. 1 is the schematic side view of an embodiment of focusing solar energy photovoltaic generator of the present invention, wherein adopts 4 reflection concentration type elements;
Fig. 2 is that schematic side view is amplified in the part of the focusing solar energy photovoltaic generator shown in Fig. 1;
Fig. 3 is the schematic perspective view of the focusing solar energy photovoltaic generator shown in Fig. 1;
Fig. 4 is the schematic top plan view of the focusing solar energy photovoltaic generator shown in Fig. 1;
Fig. 5 is the schematic perspective view of another embodiment of focusing solar energy photovoltaic generator of the present invention, wherein adopts 8 reflection concentration type elements;
Fig. 6 is the schematic diagram of an embodiment of the secondary condensation device that in focusing solar energy photovoltaic generator of the present invention, single photovoltaic cell is used;
Fig. 7 is the schematic diagram of an embodiment of the secondary condensation device that in focusing solar energy photovoltaic generator of the present invention, a plurality of photovoltaic cells are used;
Fig. 8 is the additional circuits used in an embodiment of focusing solar energy photovoltaic generator of the present invention and the schematic diagram of protective circuit.
The parts that in figure, each label is corresponding are: 1-heat abstractor; 2-photovoltaic cell; 3-secondary condensation device; The optically focused focus of 4-condenser mirror; 5-bracing frame; 6-condenser mirror.
Embodiment
As Figure 1-4, in one embodiment of the invention, focusing solar energy photovoltaic generator comprises 1,4 optical-electrical converters of heat abstractor, bracing frame 5,4 condenser mirrors 6, additional circuits and protective circuits.
The tubular bracket that bracing frame 5 is rigidity, its center line overlaps with the central axis O of this focusing solar energy photovoltaic generator; 4 condenser mirrors 6 arrange around central axis O; 4 optical-electrical converters are arranged on bracing frame 5, and around central axis, O is uniformly distributed; 4 optical-electrical converters are corresponding one by one with 4 condenser mirrors 6, are arranged at respectively optically focused focus 4 places of corresponding condenser mirror 6, and the sensitive surface of each optical-electrical converter is towards its corresponding condenser mirror 6.
In the present invention, the quantity of collective optics can be for being more than or equal to 3 arbitrary integer.As shown in Figure 5, in another embodiment of the present invention, adopt 8 reflection concentration type elements; Wherein, each collective optics has each other discrete optically focused focus, and the geometric center that described in each, optically focused focus is less than the light area of collective optics described in each to the distance of described central axis is to half of the distance of described central axis; Optical-electrical converter equates with the quantity of collective optics, and optical-electrical converter is corresponding one by one with collective optics, is arranged at respectively the optically focused focus place of corresponding collective optics, and the sensitive surface of optical-electrical converter is towards its corresponding collective optics.Can realize object of the present invention equally.
Each condenser mirror 6 consists of parabolic reflector, and about equally, area discrepancy is no more than 10% to the area of each parabolic reflector.Each parabolic reflector has each other discrete optically focused focus, the light entrance face center of the optical-electrical converter that the optically focused focus of each parabolic reflector is corresponding with each coincides, after the sunray of reflection focuses on, inject described optical-electrical converter, the geometric center that the optically focused focus of each parabolic reflector is less than each parabolic reflector to the distance A of central axis O arrives half of distance B of central axis O.The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance C of the projection of the geometric center of the light area that projects to described condenser mirror of the optically focused focus of described condenser mirror is less than the distance D of projection on summit of the close described central axis that projects to described condenser mirror of geometric center of the light area of described condenser mirror.
In another embodiment, the condenser mirror group that collective optics is comprised of a plurality of condenser mirrors, the described a plurality of condenser mirrors in each condenser mirror group have same optically focused focus; The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance of the projection of the geometric center of the light area that projects to described condenser mirror group of the optically focused focus of described condenser mirror group is less than the distance of projection on summit of the close described central axis that projects to described condenser mirror group of geometric center of the light area of described condenser mirror group.
Each optical-electrical converter comprises 1 secondary condensation device 3 and 1 high power concentrator type photovoltaic cell 2, described high power concentrator type photovoltaic cell is III-V family photovoltaic cell (as 3 junction gallium arsenide photovoltaic cells), and described secondary condensation device is transmission-type secondary condensation device (side's cone column prism as shown in Figure 6) or reflective secondary condensation device (as cone column reverberation cup).Wherein, the light entrance face of secondary condensation device is as the light entrance face of optical-electrical converter, and the light gasing surface optics of secondary condensation device is connected to described concentration type photovoltaic battery.
In another embodiment, a plurality of concentration type photovoltaic batteries that each optical-electrical converter also can adopt array-like to arrange, for example, the photovoltaic cell that each optical-electrical converter can adopt 4 array-likes to arrange, at this moment the secondary condensation device that used as shown in Figure 7, wherein, the output of a secondary condensation device has 4 output windows, and each output window optics connects a photovoltaic cell.Wherein, the light entrance face of secondary condensation device is as the light entrance face of described optical-electrical converter, and 4 light output windows of secondary condensation device correspondingly optics are connected to 4 concentration type photovoltaic batteries.
In another embodiment, described optical-electrical converter does not comprise secondary condensation device, and described optical-electrical converter is single concentration type photovoltaic battery or a plurality of concentration type photovoltaic batteries of arranging for array-like.
Each optical-electrical converter can be electrically connected to additional circuits and protective circuit as shown in Figure 8, thus the delivery of electrical energy that each optical-electrical converter is produced go out, and the protection while providing fault by each optical-electrical converter of diode pair.The electric energy that optical-electrical converter is exported is drawn by being arranged on the wire of tubular support frame 5 inside.
The heat abstractor 1 identical with optical-electrical converter quantity is arranged on bracing frame 5 and is connected with corresponding optical-electrical converter respectively.In one embodiment, the heat abstractor 1 of this focusing solar energy photovoltaic generator is liquid-cooling heat radiator, can be active cycle formula liquid-cooling heat radiator or passive circulation type liquid cooling and radiation device.Like this, optical-electrical converter is failed to be converted to the solar energy of electric energy and is taken away by the cooling liquid in described heat abstractor with form of heat, and the liquid after heating is drawn by being arranged on the pipeline of tubular support frame 5 inside.
Also bracing frame can be used as heat abstractor, by dissipation of heat in air.
Based on professional's simple thinking, on the basis of this system, can also extend multiple different structure, comprising: each collective optics can adopt diaphotoscope or speculum, wherein diaphotoscope can be Fresnel condenser; And secondary reflection mirror is placed in the place of the position of arranging at the optical-electrical converter near as shown in Figure 1, optically focused focus can be transferred to other positions (such as optical-electrical converter being placed on to the position that connects bracing frame near speculum in Fig. 1), thereby change the position of placing optical-electrical converter, form different application structures.Because of described in the invention be the condensers of many groups and photo-electric conversion element corresponding thereto, separate between every group, for example, so only employing portion packet count still can construction system, the device shown in Fig. 1 or Fig. 5 is only used to one side of something, still can form concentration solar generating device.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to protection scope of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with claims.
Claims (10)
1. a focusing solar energy photovoltaic generator, comprises bracing frame, at least three collective opticses and at least three optical-electrical converters; The direction of longitudinal central axis along described focusing solar energy photovoltaic generator of support frame as described above, described at least three optical-electrical converters are arranged on support frame as described above around described central axis, and described at least three collective opticses are around described central axis setting; It is characterized in that, each collective optics has each other discrete optically focused focus, and the geometric center that described in each, optically focused focus is less than the light area of collective optics described in each to the distance A of described central axis is to half of the distance B of described central axis; Described optical-electrical converter equates with the quantity of collective optics, and described optical-electrical converter is corresponding one by one with collective optics, is arranged at respectively the optically focused focus place of corresponding collective optics, and the sensitive surface of described optical-electrical converter is towards its corresponding collective optics.
2. focusing solar energy photovoltaic generator as claimed in claim 1, is characterized in that, described in each, optical-electrical converter is uniformly distributed around described central axis, and described in each, optically focused focus equates to the distance of described central axis; Described in each, about equally, area discrepancy is no more than 10% to the area of the light area of collective optics.
3. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, described collective optics is single condenser mirror; The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance C of the projection of the geometric center of the light area that projects to described condenser mirror of the optically focused focus of described condenser mirror is less than the distance D of projection on summit of the close described central axis that projects to described condenser mirror of geometric center of the light area of described condenser mirror.
4. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, it is characterized in that, the condenser mirror group that described collective optics is comprised of a plurality of condenser mirrors, the described a plurality of condenser mirrors in each condenser mirror group have same optically focused focus; The plane of usining perpendicular to described central axis is as projection plane, on described projection plane, the distance C of the projection of the geometric center of the light area that projects to described condenser mirror group of the optically focused focus of described condenser mirror group is less than the distance D of projection on summit of the close described central axis that projects to described condenser mirror group of geometric center of the light area of described condenser mirror group.
5. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, described optical-electrical converter is single concentration type photovoltaic battery or a plurality of concentration type photovoltaic batteries of arranging for array-like.
6. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, described in each, optical-electrical converter comprises secondary condensation device and single concentration type photovoltaic battery; Wherein, described secondary condensation device is transmission-type guide type secondary condensation device or reflective secondary condensation device; The light entrance face of described secondary condensation device is as the light entrance face of described optical-electrical converter; The light gasing surface optics of described secondary condensation device is connected to described single concentration type photovoltaic battery.
7. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, described optical-electrical converter comprises a plurality of concentration type photovoltaic batteries that secondary condensation device and array-like are arranged; Wherein, described secondary condensation device is the reflective secondary condensation device that has the transmission-type guide type secondary condensation device of a plurality of smooth delivery outlets or have a plurality of smooth delivery outlets; The light entrance face of described secondary condensation device is as the light entrance face of described optical-electrical converter; A plurality of smooth delivery outlet of described secondary condensation device correspondingly optics is connected to described a plurality of concentration type photovoltaic battery.
8. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, also comprises the heat abstractor identical with the quantity of optical-electrical converter; Described heat abstractor is arranged on support frame as described above, and is connected with corresponding optical-electrical converter respectively.
9. focusing solar energy photovoltaic generator as claimed in claim 8, is characterized in that, described heat abstractor is active cycle formula liquid-cooling heat radiator or passive circulation type liquid cooling and radiation device; The solar energy that described in each, part or all of failing of optical-electrical converter is converted to electric energy is taken away by the cooling liquid in described heat abstractor with form of heat; Support frame as described above is tubulose, and the liquid after the heating in described heat abstractor is drawn by being arranged on the pipeline of the inside of support frame as described above.
10. focusing solar energy photovoltaic generator as claimed in claim 1 or 2, is characterized in that, also comprises additional circuits and protective circuit, and described in each, optical-electrical converter is electrically connected to described additional circuits and protective circuit; Support frame as described above is tubulose, and the electric energy that described in each, optical-electrical converter is exported is drawn by being arranged on the wire of the inside of support frame as described above.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310132615.5A CN104113279A (en) | 2013-04-17 | 2013-04-17 | Condensing solar energy photovoltaic power generating device |
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| CN201310132615.5A CN104113279A (en) | 2013-04-17 | 2013-04-17 | Condensing solar energy photovoltaic power generating device |
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| CN104808324A (en) * | 2015-04-26 | 2015-07-29 | 包头市爱能控制工程有限责任公司 | Solar disk type power generation secondary condensation tube |
| WO2015135458A1 (en) * | 2014-03-10 | 2015-09-17 | 容云 | Trough-type point-focusing device for exploitation of solar energy |
| CN107525283A (en) * | 2017-09-01 | 2017-12-29 | 广东五星太阳能股份有限公司 | A kind of portable non-tracking wide-angle Photospot solar device |
| CN108322182A (en) * | 2018-03-21 | 2018-07-24 | 巫国辉 | A kind of concentrating solar receiving unit and solar battery apparatus |
| CN108322183A (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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