CN103684240A - Concentrator solar cell module - Google Patents
Concentrator solar cell module Download PDFInfo
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- CN103684240A CN103684240A CN201310604623.5A CN201310604623A CN103684240A CN 103684240 A CN103684240 A CN 103684240A CN 201310604623 A CN201310604623 A CN 201310604623A CN 103684240 A CN103684240 A CN 103684240A
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- photovoltaic cell
- rotating shaft
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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
The invention provides a photovoltaic solar cell module without a solar tracker system. The concentrator solar cell module comprises a transparent ball. The transparent ball is used as a concentrating element. The concentrator solar cell module has the advantage that the concentrating element does not need tracking for light sources such as the sun.
Description
Technical field
The present invention relates to a kind of concentrating solar battery modules of wide angle optically focused, particularly relevant for a kind of transparent ball that uses as the photoelectric cell of collective optics, can be applied to assemble sunlight or indoor light and be used for producing electric power.
Background technology
With solar cell, obtain the energy, compared to other the energy, such as fossil energy, nuclear energy, water conservancy etc., is to think at present mode compared with environmental protection.Especially the price of crude oil continue hurricane high in, the solar power generation that more seems many advantages.Moreover crude oil always has one day that uses up, and solar power generation is the inexhaustible energy for crude oil.Therefore at present national governments, research unit and many individual enterprise are all dropped in many resourcess for research in solar energy industry.
Now, because the material cost of solar power generation is high unit price, in order to reduce costs, allow the solar power generation can commercialization and the universal people's livelihood articles for use that become, a kind of settling mode be for being used the condenser system of optics to reduce the material that uses solar power generation.The simplest mode is directly to use large-area lens light gathering, allows large-area light can focus on the photovoltaic cell (photovoltaic cell) of fritter area upper to strengthen generating effect.Yet, because lens have volume, and the suitable weight of weight, this mode can cause heavy solar power system.And, the aberration of lens, aberration, focal length etc., the problem that generally optically can run into here also can run into.Therefore, many research directions forward to use other optical focusing system to solve the above problems.
A simple settling mode is to adopt Fresnel lens to replace traditional lens.As shown in the first figure, Fresnel lens 10 focus light rays on a photovoltaic cell (photovoltaic cell) 13, wherein Fresnel lens can reduce the thickness of collector lens with respect to traditional convex lens, therefore can reduce volume and the weight that conventional lenses is larger.Another kind of mode is that the use lid being provided by Fork and Maeda is matched Green's formula (Cassegrain) system as the solar concentrating system of collected light.The mode that Fork and Maeda provide, can be referring to U.S. Patent Bulletin US2006/0231133, mainly used a principal reflection mirror and primary event mirror (secondary mirror) by light-ray condensing to photovoltaic cell.Refer to shown in Fig. 2, the bottom of principal reflection mirror 11 configures a photovoltaic cell 13, and on principal reflection mirror 11, configures primary event mirror 12.After being irradiated to principal reflection mirror 11, light can be reflected in secondary mirror 12, then secondary reflecting on photovoltaic cell 13 through secondary mirror 12.
The design of two kinds of above-mentioned traditional light-focusing type solar cell modules, it is limited in the very high sun tracking system of accuracy of must arranging in pairs or groups, and minute surface is kept to vertical with the sun, sunlight could be concentrated and is projected on crystal grain, and mat crystal grain converts sunlight to electric power.Generally, the cost of sun tracking system accounts for 1/5th left and right of whole light-focusing type solar cell module cost.When the multiplying power of collective optics is higher, the precision of sun-tracing is also higher, also lower for the scope of error tolerance.For example, with one day 24 hours, earth rotation calculated for one day, and the sun is to move with per hour 15 speed of spending relative to the earth, 0.25 degree per minute
Or the speed of 15 minutes per minute (dividing is here the unit of angle) moves.When the multiplying power of collective optics is during 1000 times of left and right, precision per minute was about 0.9 second (here second be the unit of angle) left and right.
Therefore,, for the higher collective optics of multiplying power, more need the more system of the sun-tracing of high precision.This can significantly improve the cost of whole concentrating solar battery modules, thereby makes light-focusing type solar cell module be difficult for commercialization.
Summary of the invention
In above-mentioned background of invention, in order to meet the demand of industry interests, the invention provides a kind of simple and easyly or do not need the concentrating solar battery modules of complicated solar tracking mechanism, main being characterised in that used transparent ball as collective optics.
An object of the present invention be to provide a kind of do not need expensive, tracing light source system or the sun tracing system of high precision.
Another object of the present invention is to as providing easy sun tracing system to be applied in light-focusing type solar cell module of the present invention.
The direction that the present invention inquires at this is a kind of light-focusing type solar cell module that does not need the sun tracking system of high precision.In order to understand up hill and dale the present invention, will detailed step and composition thereof be proposed in following description.Apparently, execution of the present invention is not defined in the specific details that the skill person of light-focusing type solar cell module has the knack of.On the other hand, well-known composition or step are not described in details, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment meeting of the present invention is described in detail as follows, yet except these are described in detail, the present invention can also be implemented in other embodiment widely, and scope of the present invention circumscribed not, its with after the scope of the claims be as the criterion.
The present invention utilizes a transparent ball as a collective optics.When the relative bearing between light source and transparent ball changes, do not need mobile collective optics, light source still can focus at the relative opposite side of transparent ball.Utilize means of the present invention can allow light source follow the importance of the relative bearing of transparent ball significantly to reduce.When light source moves, on the track that can advance future at light source, several photovoltaic cells are installed, or photovoltaic cell is followed the trail of facing to light source.
Because at present general sun tracking system causes higher cost because of the tracking precision of needs precision.Utilize the means of the present invention can head it off, to effectively reduce cost.
From means of the present invention, a kind of photoelectric cell is provided, more clearly, provide a kind of concentrating solar battery modules, comprise a collective optics, with one first photovoltaic cell, the light source of assembling in order to receive collective optics.Aforesaid collective optics is a transparent ball, in order to collected light.
The material of described collective optics can be glass, quartz, plastic cement, acryl (acrylate), polyethylene terephthalate (PET), polyurethane (PU), cycloolefin macromolecule (mCOC), epoxy resin (epoxy), siloxanes (Silicone), polymethyl methacrylate (PMMA), Merlon (PC), CaF crystal (fluorite), or MgF crystal etc.The manufacture of collective optics can be ejection formation.In addition, described collective optics can be hollow housing, inside inserts liquid or solid to change the refraction coefficient of collective optics.
The present invention more comprises concavees lens, and between collective optics and photovoltaic cell, the direction in order to light source that transparent ball is assembled, turns to into the surface perpendicular to photovoltaic cell.
The present invention more comprises base for supporting collective optics and a photovoltaic cell.A kind of light source or mode of track of sun of following the trail of comprises one second photovoltaic cell and is positioned at by the first photovoltaic cell, and one the 3rd photovoltaic cell be positioned at by the second photovoltaic cell, make the first photovoltaic cell, the second photovoltaic cell, be positioned at the position of the 3rd photovoltaic cell the track that the sun moves.The present invention more comprises a C type arm, is positioned at two end points of C type arm with one first rotating shaft, and described the first rotating shaft is by the diameter of transparent ball.Described the first photovoltaic cell, the second photovoltaic cell and the 3rd photovoltaic cell are positioned on C type arm.Described the first rotating shaft is parallel with earth's axis, and C type arm is rotated centered by the first rotating shaft, and the wherein direction of rotation of C type arm and earth rotation opposite direction, in order to offset the movement of the sun that earth rotation causes.Between described the first rotating shaft and pedestal, there is one second rotating shaft, make the first rotating shaft can be with unspecified angle with respect to pedestal.
Another kind of follow the trail of light source or the mode of track of sun comprises a C type arm, be positioned at two end points of C type arm with one first rotating shaft, described the first rotating shaft is by the diameter of transparent ball.Described the first photovoltaic cell is positioned on C type arm.Described C type arm has a mobile device the first photovoltaic cell can be positioned on arbitrary position of C type arm.Described the first rotating shaft is parallel with earth's axis, and C type arm is rotated centered by the first rotating shaft, and the wherein direction of rotation of C type arm and earth rotation opposite direction, in order to offset the movement of the sun that earth rotation causes.Between described the first rotating shaft and pedestal, there is one second rotating shaft, make the first rotating shaft can be with unspecified angle with respect to pedestal.Between described the first rotating shaft and pedestal, there is one the 3rd rotating shaft, make the C type arm can be towards either direction.
The present invention provides a kind of concentrating solar battery modules simultaneously, comprise a transparent ball in order to optically focused, one in order to receive the photovoltaic cell of the light source that transparent ball assembles, and convex lens, between transparent ball and photovoltaic cell, direction in order to light source that transparent ball is assembled, turns to into the surface perpendicular to photovoltaic cell.The present invention more comprises a kind of device of sun-tracing, and the track that photovoltaic cell can be advanced along the sun moves.
Next, refer to graphic detailed explanation content of the present invention, technical characterictic, with various execution modes.
Accompanying drawing explanation
Fig. 1 shows a kind of cross section structure schematic diagram of traditional light-focusing type solar cell;
Fig. 2 shows the cross section structure schematic diagram of another kind of traditional light-focusing type solar cell;
Fig. 3 shows that transparent ball according to the present invention is as the cross section structure schematic diagram of the light-focusing type solar cell of collective optics;
Fig. 4 shows that foundation feature of the present invention is placed in light-focusing type solar cell in the cross section structure schematic diagram of pedestal;
Fig. 5 shows that foundation feature of the present invention is placed in light-focusing type solar cell in the cross section structure schematic diagram of another kind of pedestal;
Fig. 6 A and Fig. 6 B show the cross section structure schematic diagram that uses a plurality of photovoltaic cells according to feature of the present invention;
Fig. 7 show according to feature of the present invention by light-focusing type solar cell be placed in the cross section structure schematic diagram of the C type arm of the traceable sun;
Fig. 8 shows the cross section structure schematic diagram that according to feature of the present invention, light-focusing type solar cell is placed in to the pedestal of the traceable sun;
The rotating shaft that Fig. 9 is presented at C type arm in Fig. 8 can be adjusted the cross section structure schematic diagram of orientation and angle on pedestal; And
Figure 10 shows the cross section structure schematic diagram that uses concavees lens to increase the generating effect of photovoltaic cell.
Embodiment
Refer to Fig. 3, a round transparent ball 100 is as collective optics of the present invention.The material of transparent ball 100 can be glass, quartz, plastic cement, acryl (acrylate), polyethylene terephthalate (PET), polyurethane (PU), cycloolefin macromolecule (mCOC), epoxy resin (epoxy), siloxanes (Silicone), polymethyl methacrylate (PMMA), Merlon (PC), CaF crystal (fluorite), or MgF crystal etc.Transparent ball 100 can also be the spheroid of hollow, and the inside inserts liquid or solid is to change the refraction coefficient of transparent ball 100.The production method of transparent ball 100 can be ejection formation, or manufactures by the mode of grinding.
Because transparent ball 100 is lens of a full symmetric, therefore the light of any angle all can concentrate on light in a focus that corresponds to light source through lens.And the effect that does not need to rotate this collective optics and can reach focusing.During use, as long as being placed on to focus top, photovoltaic cell 130 can convert the light of collection to electric power.
Fig. 4 shows that foundation feature of the present invention is placed in light-focusing type solar cell in the cross section structure schematic diagram of one pedestal 110.Transparent ball 100 is arranged in a rotating shaft 140 photovoltaic cell 130 can be rotated according to the direction of rotating shaft 140.The mode of another enforcement is to allow the rotation that rotating shaft 140 itself can horizontal direction, and photovoltaic cell 130 can be with unspecified angle facing to light source.In embodiment in Fig. 4, be to be mainly applied in the indoor environment with fixing light source, therefore only need simple one to two mobilizable transfer can allow photovoltaic cell 130 face toward the light source of any direction.The design of transfer, the simplest mode is exactly two groups of separate vertical gears of design.
Another kind of application embodiments of the invention, refer to Fig. 5.On two end points of a C type arm 120, there is a rotating shaft 141 to pass through.On C type arm 120, photovoltaic cell 130 has been installed, wherein between photovoltaic cell 130 and C type arm 120, can have been had gear or other device can allow photovoltaic cell 130 be positioned at arbitrary position of C type arm 120.The object that designs the rotating shaft 141 of a tilting is to be used for sun-tracing.The angle of inclination of rotating shaft 141 is the latitude at user place, makes rotating shaft 141 parallel with earth's axis.When the sun is mobile time, for ball lens 100, only have a motion track vertical with respect to rotating shaft 141.One pillar 111-2 is positioned at the top of a base 111-1, in order to support C type arm 120.Pillar 111-2 can design and allow C type arm 120 rotate relative to base 111-1, and allows rotating shaft 141 with any angle with respect to the horizontal plane, thus, makes the photovoltaic cell 130 energy sun-tracings on C type arm 120.
If sun-tracing, a kind of simple mode as shown in Fig. 6 A and Fig. 6 B, is pacified the several photovoltaic cells 130 of light on the track of sun of ball lens 100.Another execution mode, is to replace C type arm 120 with Loadings On Hemispherical Shell 121, all photovoltaic cells 130 can be arranged on Loadings On Hemispherical Shell 121, as shown in Fig. 6 B.In the present embodiment, user can, for the time number that need to use solar power generation, determine the number of the photovoltaic cell 130 of use.For example, user intends to use solar cell to produce electric power approximately 2 hours, and the angle that this 2 hours sun are passed through is about 30 degree.Therefore several photovoltaic cells 130 only need to be installed on Loadings On Hemispherical Shell 121 to the quantity that equals or surpass 30 degree angles.Whole system is also just without any need for the rotation system of extra tracking.
The mode of another kind of sun-tracing, refers to Fig. 7.One rotating shaft 141 is parallel to earth's axis, and C type arm 120 can be rotated, thereby the photovoltaic cell 130 on C type arm 120 rotates thereupon, to offset earth rotation.Above-mentioned C type arm 120, as shown in Fig. 6 B, can also be replaced with Loadings On Hemispherical Shell 121.After earth rotation is offseted, the relative C type of the track of the passing through arm 120 of the sun can roughly be seen as actionless celestial body.
Compared with specific embodiment, refer to Fig. 8.Rotating shaft 141 is positioned on a base 112, and the angle of inclination of its shaft 141 is identical with local latitude.The sensing orientation of rotating shaft is the north on the Northern Hemisphere, is south in the Southern Hemisphere.The opening that another kind of mode is C type arm 120 is towards south on the Northern Hemisphere, in the Southern Hemisphere, is to be exposed to the north.Main object is all to make rotating shaft 141 parallel with earth's axis.Photovoltaic cell 130 can be positioned at the arbitrary position on C type arm 120, main according to local latitude, the position of seasonal adjustment photovoltaic cell 130.When whole system has been set, sunlight can optically focused on photovoltaic cell 130, C type arm 120 can be rotated with respect to rotating shaft 141, the direction of rotation and earth rotation opposite direction, speed is about 15 degree per hour.The mode that allows C type arm 120 rotate, can be designed to simple Mainspring type rotation, or use electronic component to control.In addition, the OPTICAL SENSORS of can also arranging in pairs or groups is carried out more accurate tracking.Yet when being designed to Mainspring type rotation, the tracking of C type arm is used any electric power to carry out solar tracking with regard to not needing.If when the tracking precision of considering need to reduce, can provide the photovoltaic cell 130 of 2 to 3 left and right to be positioned on C type arm 120 again, the track that the sun is passed through can all be dropped on photovoltaic cell 130.
The rotating shaft 141 that Fig. 9 is presented at C type arm 120 in Fig. 8 can be adjusted the cross section structure schematic diagram of orientation and angle on pedestal 112.Rotating shaft 141 can be adjusted the elevation angle by angular adjustment apparatus 112-1.Angular adjustment apparatus 112-1 can be in the middle of two support chips with a screw by rotating shaft 141, make rotating shaft 141 can adjust the elevation angle.In addition, rotating shaft 141 can see through orientation from C type arm 120 to adjusting device 112-2 that adjust.Direction adjustment device 112-2 can be an interior disk and the outer toroid that can hold this interior disk of concentric-ring pattern.Rotation that can Arbitrary Relative between interior disk and outer toroid, C type arm 120 can be adjusted facing to any direction.
The present invention can also add on photovoltaic cell that an optical lens can be evenly distributed to light on solar cell.Refer to Figure 10, concavees lens 102 are between transparent ball 100 and photovoltaic cell 130.The main purpose of concavees lens is to allow most of light enter with the direction of vertical photovoltaic cell 130.Because being light, the state of generating efficiency the best of photovoltaic cell 130 all with vertical angle, enters.A kind of effect of using transparent ball 100 is exactly to allow light partly closely enter photovoltaic cell 130 with the angle of a certain inclination.Concavees lens have astigmatic effect, can allow the light beam being focused scatter, and have therefore reduced the ratio that is parallel to photovoltaic cell 130 surfaces.
The present invention, can be possible collocation and combination of above-mentioned various diagrams and various embodiment, and any collocation should be considered as various embodiment of the present invention with combination.At this, do not answer superfluous words and introduce one by one various combinations.
Utilize means of the present invention, can reach and have light-focusing type solar cell module simple and easy and sun tracking system cheaply, the condenser system that wherein occupies larger volume does not need mobile with sun-tracing.When light source is mobile time, can on the track of the light source with respect to mobile, several photovoltaic cells be installed, light source can sequentially be impinged upon on several photovoltaic cells in mobile.Another kind of mode, only need to mobile small volume, the photovoltaic cell that weight is lighter; Namely photovoltaic cell is followed the trail of along the moving direction of light source.When light source is the sun, because the track of the sun is predictable, steering mechanism that can simplicity of design is followed the trail of.Because the present invention does not need the high tracing system of precision, so can reach simple and easy and sun tracking system cheaply.Therefore, the present invention can provide light-focusing type solar cell module cheaply.
In addition, the present invention can provide small-sized device of solar generating.Especially for portable electronic installation (mobile electronics), can provide the temporary or electric power of urgent use.
Apparently, according to the description in embodiment above, the present invention may have many corrections and difference.Therefore need in the scope of its additional claim, be understood, except above-mentioned detailed description, the present invention can also implement widely in other embodiment.Above are only preferred embodiment of the present invention, not in order to limit claim of the present invention; All other do not depart from the equivalence completing under disclosed spirit and changes or modify, and all should be included in following claim.
Claims (9)
1. a concentrating solar battery modules, comprises: a collective optics is a transparent ball in order to optically focused; And one first photovoltaic cell, the light source of assembling in order to receive this transparent ball.
2. according to the concentrating solar battery modules of claim 1, wherein, the material of described collective optics is glass, quartz, plastic cement, acryl, polymethyl methacrylate, Merlon, CaF crystal, or MgF crystal; According to the concentrating solar battery modules of claim 2, wherein, the manufacture of described collective optics is ejection formation; According to the concentrating solar battery modules of claim 1, wherein, described collective optics is hollow housing, inside inserts liquid or solid to change the refraction coefficient of this transparent ball; According to the concentrating solar battery modules of claim 1, wherein, more comprise the pedestal of this collective optics of a support and this photovoltaic cell.
3. according to the concentrating solar battery modules of claim 5, wherein, more comprise one and be positioned at the second other photovoltaic cell of this first photovoltaic cell; According to the concentrating solar battery modules of claim 6, wherein, more comprise one and be positioned at the 3rd other photovoltaic cell of this second photovoltaic cell, this first photovoltaic cell, this second photovoltaic cell and the 3rd photovoltaic cell are positioned on the track that the sun moves; According to the concentrating solar battery modules of claim 5, wherein, more comprise a C type arm, one first rotating shaft is connected in two end points of this C type arm, and described the first rotating shaft is by the diameter of this transparent ball.
4. concentrating solar battery modules according to Claim 8, wherein, described the first photovoltaic cell, this second photovoltaic cell and the 3rd photovoltaic cell are positioned on this C type arm; According to the concentrating solar battery modules of claim 9, wherein, described the first rotating shaft is parallel with earth's axis, and this C type arm is rotated centered by this first rotating shaft, the direction of rotation of this C type arm and earth rotation opposite direction, in order to offset the movement of the sun that earth rotation causes; According to the concentrating solar battery modules of claim 10, wherein, between described the first rotating shaft and this pedestal, there is one second rotating shaft, make this first rotating shaft can be with unspecified angle with respect to this pedestal.
5. according to the concentrating solar battery modules of claim 1, wherein, more comprise a C type arm, one first rotating shaft is positioned at two end points of this C type arm, and described the first rotating shaft is by the diameter of this transparent ball; According to the concentrating solar battery modules of claim 12, wherein, described the first photovoltaic cell is positioned on this C type arm; According to the concentrating solar battery modules of claim 13, wherein, described C type arm has a mobile device this first photovoltaic cell can be positioned on arbitrary position of this C type arm.
6. according to the concentrating solar battery modules of claim 12, wherein, described the first rotating shaft is parallel with earth's axis, and this C type arm is rotated centered by this first rotating shaft, the direction of rotation of this C type arm and earth rotation opposite direction, in order to offset the movement of the sun that earth rotation causes.
7. according to the concentrating solar battery modules of claim 15, wherein, between described the first rotating shaft and this pedestal, there is one second rotating shaft, make this first rotating shaft can be with unspecified angle with respect to this pedestal; According to the concentrating solar battery modules of claim 16, wherein, between described the first rotating shaft and this pedestal, there is one the 3rd rotating shaft, make this C type arm can be towards either direction.
8. a concentrating solar battery modules, comprises: _ _ mono-transparent ball, in order to optically focused; One photovoltaic cell, the light source of assembling in order to receive this transparent ball; And convex lens, between this transparent ball and this photovoltaic cell, in order to the directional steering of light source that this transparent ball is assembled, become the surface perpendicular to this photovoltaic cell; According to the concentrating solar battery modules of claim 18, wherein, more comprise a kind of device of sun-tracing, the track that this photovoltaic cell can be advanced along the sun moves.
9. a photoelectric cell, comprises: a transparent ball, in order to collected light; And a photovoltaic cell, in order to receive light that this transparent ball assembles in order to produce electric power.
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| CN201310604623.5A CN103684240A (en) | 2013-11-26 | 2013-11-26 | Concentrator solar cell module |
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| CN201310604623.5A CN103684240A (en) | 2013-11-26 | 2013-11-26 | Concentrator solar cell module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070393A (en) * | 2016-12-28 | 2017-08-18 | 中国电子科技集团公司第十八研究所 | A kind of Fresnel Lenses for concentrator solar cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070393A (en) * | 2016-12-28 | 2017-08-18 | 中国电子科技集团公司第十八研究所 | A kind of Fresnel Lenses for concentrator solar cell |
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Application publication date: 20140326 |