CN202084568U - Low-concentration equipment for solar cell - Google Patents
Low-concentration equipment for solar cell Download PDFInfo
- Publication number
- CN202084568U CN202084568U CN2011201725128U CN201120172512U CN202084568U CN 202084568 U CN202084568 U CN 202084568U CN 2011201725128 U CN2011201725128 U CN 2011201725128U CN 201120172512 U CN201120172512 U CN 201120172512U CN 202084568 U CN202084568 U CN 202084568U
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- Prior art keywords
- solar cell
- isosceles trapezoid
- concentration equipment
- cell low
- prism
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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
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Abstract
The utility model relates to the technical field of solar energy and discloses low-concentration equipment for a solar cell. The low-concentration equipment for the solar cell comprises a prism, wherein the main section of the prism is an isosceles trapezoid; the side surface in which the two waist sides of the isosceles trapezoid are positioned, facing to the lower bottom of the isosceles trapezoid, is a sunlight emitting surface; the bottom angle theta consisting of the lower bottom of the isosceles trapezoid and the sunlight emitting surface is more than 22 degrees and less than 29 degrees; and the side surface in which the upper bottom of the isosceles trapezoid is positioned is adhered with a solar cell sheet (1). When the low-concentration equipment is applied to the solar cell, the multiplying power at which light energy is converted into electric energy can be greatly improved, and the cost can be saved under the condition the output of the electric energy is equal.
Description
Technical field
The present invention relates to technical field of solar, relate in particular to solar cell low-concentration equipment.
Background technology
At present, in solar cell low-concentration field, a lot of designs and design concept are arranged; There are some designs and design concept also to realize commercialization, the battery that solar battery sheet 1 as shown in Figure 1 and prism 4 are formed.
Yet, have now in the solar cell low-concentration product on market, on technology and technology, all exist a lot of problems and defective.For example: the multiplying power of transform light energy electric energy is lower, and the electric energy output multiplying power of existing solar cell low-concentration product design is generally between 1.5 times to 1.8 times; Because the solar cell low-concentration is very high to the requirement of light source, wanting precise design light source incidence angle technically is unusual difficulty, therefore have now solar cell low-concentration technology can only be in less light source ranges of incidence angles produce power; Very high to technological requirement, set up manufacturing environment with new production engineering specifications, this has produced difficulty to manufacture view; Material cost and manufacturing cost are very high, are difficult to usually match in excellence or beauty with the solar panel cost; Existing solar cell low-concentration still needs accessory device and system to improve its energy conversion efficiency, i.e. light source tracking device, this system on the technology, install and cost on all make existing solar cell low-concentration increase difficulty.
Summary of the invention
The invention provides a kind of solar cell low-concentration equipment, the multiplying power of the solar cell transform light energy electric energy after this solar cell low-concentration equipment and solar battery sheet are combined into is higher, has reduced the cost of solar cell.
A kind of solar cell low-concentration equipment comprises prism 2, and the main cross section of described prism 2 is an isosceles trapezoid, and a side of going to the bottom towards described isosceles trapezoid in the side, two waist places of described isosceles trapezoid is the sunlight surface of emission; Described isosceles trapezoid is gone to the bottom and the scope of the base angle θ that the described sunlight surface of emission forms is: 22 °＜θ＜29 °; Side, described isosceles trapezoid upper base place is bonded with solar battery sheet (1).
Wherein, under above-mentioned angular range, total reflection can both be taken place and do not reflected prism 2 after the sunlight surface of emission reflection in most sunlight in the isosceles trapezoid side, place of going to the bottom.
The scope of above-mentioned base angle θ, preferable is: 27.8 ° of 24.8 °≤θ, under this scope, the transform light energy of solar cell is that the multiplying power of electric energy is higher.
As an optional execution mode, the scope of the height ratio upper base of described isosceles trapezoid is 1: 2.01～1: 3.04.
Wherein, be under 1: 2.01～1: 3.04 the situation in the scope of the height ratio upper base of isosceles trapezoid, after most of sunlight of incident sees through the side, place of going to the bottom of prism 2, or directly penetrate on side, prism 2 upper base place and received by solar battery sheet again; Penetrate again in prism 2 sides, upper base place and by solar battery sheet in the side, waist place of isosceles trapezoid, after going to the bottom between the side, place through the several times total reflection and to receive, have only small part light to be reflected or reflect away.
As an optional execution mode, be coated with reflectance coating 3 on the side, two waist places of described isosceles trapezoid, the reflectivity of described reflectance coating 3 is greater than 90%.Make light like this when shining these two sides, most light can both be reflected.
As an optional execution mode, described reflectance coating 3 is made up of glassy layer, silver coating, copper coating, prime coat, top coat layer and protective layer from top to bottom successively, and described glassy layer adopts ultrawhite toughened glass.
Wherein, the ultrawhite toughened glass of the superiors can guarantee the mechanical strength of reflectance coating 3, and its five layers of coatings behind except guaranteeing the reflection efficiency of reflectance coating 3, can also guarantee that it has the function that anticorrosion is polluted.
As an optional execution mode, the transmissivity of described prism 2 is greater than 91%, make to have only few part solar energy just to be reflected when injecting or sponge, and most of solar energy can both pass prism 2.
As an optional execution mode, described solar battery sheet 1 can be the monocrystaline silicon solar cell sheet, or polysilicon solar battery slice, or the noncrystal membrane solar battery sheet.
Solar cell low-concentration equipment provided by the invention can improve the multiplying power that transform light energy is an electric energy when being applied to solar cell greatly, can save cost under equal electric energy output variable condition.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing a kind of low power focusing solar battery;
Fig. 2 is the structural representation of a kind of solar cell low-concentration equipment provided by the invention;
Fig. 3 is the main cross section view of solar cell low-concentration equipment provided by the invention;
The schematic diagram that Fig. 4 propagates in solar cell low-concentration equipment provided by the invention for incident ray;
Fig. 5 is the schematic diagram that has an incident ray to propagate in solar cell low-concentration equipment provided by the invention;
Fig. 6 is the view of solar cell low-concentration equipment provided by the invention and solar battery sheet combination;
Wherein, 1-solar battery sheet; The 2-prism; The 3-reflectance coating; The 4-prism.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also Fig. 2, Fig. 2 is a kind of solar cell low-concentration device structure schematic diagram provided by the invention.As shown in Figure 2, this solar cell low-concentration equipment can comprise prism 2.As shown in Figure 3, the main cross section ABCD of described prism 2 is an isosceles trapezoid, and the side that two waist AB of described isosceles trapezoid and CD place side ABFE and DCGH go to the bottom towards described isosceles trapezoid is the sunlight surface of emission; Described isosceles trapezoid is gone to the bottom and the scope of the base angle θ that the described sunlight surface of emission forms is: 22 °＜θ＜29 °.
Wherein, under above-mentioned angular range, total reflection can both be taken place and do not reflected prism 2 after the sunlight surface of emission reflection in most sunlight in the isosceles trapezoid side, place of going to the bottom.
The scope of above-mentioned base angle θ, preferable is: 27.8 ° of 24.8 °≤θ, under this scope, the transform light energy of solar cell is that the multiplying power of electric energy is higher.
As an optional execution mode, the height ratio upper base of described isosceles trapezoid is CK: the scope of BC is 1: 2.01～1: 3.04.
Be under 1: 2.01～1: 3.04 the situation in the scope of the height ratio upper base of isosceles trapezoid, after most of sunlight of incident sees through the side, place of going to the bottom of prism 2, or directly penetrate on side, prism 2 upper base place and received by solar battery sheet again; Penetrate again in prism 2 sides, upper base place and by solar battery sheet in the side, waist place of isosceles trapezoid, after going to the bottom between the side, place through the several times total reflection and to receive, have only small part light to be reflected or reflect away.
As Fig. 4, shown in Figure 5, light is from prism 2 isosceles trapezoids go to the bottom the side ADHE vertical incidence (Fig. 4) or the α incident at a certain angle (Fig. 5) at place, light passes respectively and enters prism 2 inside after the ADHE face directly enters prism 2 inside or the refraction of process ADHE face, part light directly arrives isosceles trapezoid upper base place side BCGF, and another part is being got back to the ADHE face through isosceles trapezoid two waist place side ABFE and DCGH reflection back, light incidence angle at this moment is greater than the critical angle of total reflection on this plane, reflex on the BCGF face so can total reflection take place, received by solar battery sheet at last and carry out opto-electronic conversion.
As an optional execution mode, be coated with reflectance coating 3 on the side, two waist places of described isosceles trapezoid, the reflectivity of described reflectance coating 3 is greater than 90%.Make light like this when shining these two sides, most light can both be reflected.
Wherein, Fig. 3～Fig. 6 is in order to watch the clear thickness of having thickeied reflectance coating 3.
As an optional execution mode, described reflectance coating 3 is made up of glassy layer, silver coating, copper coating, prime coat, top coat layer and protective layer from top to bottom successively, and described glassy layer adopts ultrawhite toughened glass.
Wherein, the ultrawhite toughened glass of the superiors can guarantee the mechanical strength of reflectance coating 3, and its five layers of coatings behind except guaranteeing the reflection efficiency of reflectance coating 3, can also guarantee that it has the function that anticorrosion is polluted.
As an optional execution mode, the transmissivity of described prism 2 is greater than 91%, the transmissivity of prism 2 can reach 92% under the best situation, make to have only few part solar energy just to be reflected when injecting or sponge, and most of solar energy can both pass prism 2.
Fig. 6 is the view of solar cell low-concentration equipment provided by the invention and solar battery sheet combination.Among the present invention, solar battery sheet 1 can be monocrystaline silicon solar cell sheet, polysilicon solar battery slice, noncrystal membrane solar battery sheet, and the present invention does not limit.Wherein, solar battery sheet 1 can be adhesively fixed on the side, isosceles trapezoid upper base place of described prism 2 by the EVA glued membrane.
More than a kind of solar cell low-concentration equipment provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. a solar cell low-concentration equipment is characterized in that, comprises prism (2), and the main cross section of described prism (2) is an isosceles trapezoid, and a side of going to the bottom towards described isosceles trapezoid in the side, two waist places of described isosceles trapezoid is the sunlight surface of emission; Described isosceles trapezoid is gone to the bottom and the scope of the base angle θ that the described sunlight surface of emission forms is: 22 °＜θ＜29 °; Side, described isosceles trapezoid upper base place is bonded with solar battery sheet (1).
2. solar cell low-concentration equipment according to claim 1 is characterized in that the scope of the height ratio upper base of described isosceles trapezoid is 1: 2.01～1: 3.04.
3. solar cell low-concentration equipment according to claim 1 is characterized in that, is coated with reflectance coating (3) on the side, two waist places of described isosceles trapezoid.
4. solar cell low-concentration equipment according to claim 3 is characterized in that the reflectivity of described reflectance coating (3) is greater than 90%.
5. solar cell low-concentration equipment according to claim 4; it is characterized in that; described reflectance coating (3) is made up of glassy layer, silver coating, copper coating, prime coat, top coat layer and protective layer from top to bottom successively, and described glassy layer adopts ultrawhite toughened glass.
6. solar cell low-concentration equipment according to claim 1 is characterized in that the transmissivity of described prism (2) is greater than 91%.
7. according to any described solar cell low-concentration equipment of claim 1～6, it is characterized in that described solar battery sheet (1) is the monocrystaline silicon solar cell sheet, or polysilicon solar battery slice, or the noncrystal membrane solar battery sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201725128U CN202084568U (en) | 2011-05-26 | 2011-05-26 | Low-concentration equipment for solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201725128U CN202084568U (en) | 2011-05-26 | 2011-05-26 | Low-concentration equipment for solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084568U true CN202084568U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201725128U Expired - Fee Related CN202084568U (en) | 2011-05-26 | 2011-05-26 | Low-concentration equipment for solar cell |
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| CN (1) | CN202084568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222714A (en) * | 2011-05-26 | 2011-10-19 | 深圳市安泰科建筑技术有限公司 | Low concentration device of solar battery |
-
2011
- 2011-05-26 CN CN2011201725128U patent/CN202084568U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222714A (en) * | 2011-05-26 | 2011-10-19 | 深圳市安泰科建筑技术有限公司 | Low concentration device of solar battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20180526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |