CN203150589U

CN203150589U - Light concentration photovoltaic reception apparatus and reflective holding member thereof

Info

Publication number: CN203150589U
Application number: CN2012205965553U
Authority: CN
Inventors: 周伟; 黄旭艳; 许洪
Original assignee: Hong Kong Applied Science and Technology Research Institute ASTRI
Current assignee: Hong Kong Applied Science and Technology Research Institute ASTRI
Priority date: 2012-11-13
Filing date: 2012-11-13
Publication date: 2013-08-21
Anticipated expiration: 2022-11-13

Abstract

A light concentration photovoltaic reception apparatus comprises one or more photoconductive elements, one or more solar cells positioned on a substrate and one or more reflective holding members. Each photoconductive element includes an entrance and an exit and is used for receiving light from the entrance and guiding the light to the exit. Each solar cell is provided with one of the photoconductive elements and is used for receiving the light emitted from the exit of the photoconductive element. Each reflective holding member includes a reflective sidewall which encloses the bottom-end sidewalls of each photoconductive element. The reflective sidewall is in tight cooperation with the sidewall of the photoconductive element in contour, and is used for positioning the photoconductive element on the solar cell. Furthermore, when light leaked from the bottom-end sidewall of the photoconductive element, the reflective sidewall reflects the leaked light to the solar cell. The reflective holding member not only is simple in structure and firm in positioning, but also can improve light conduction efficiency of the photoconductive elements.

Description

Condensation photovoltaic receiving system and reflectivity retaining piece thereof

Technical field

The utility model relates to equipment for collecting solar energy, particularly relates to a kind of condensation photovoltaic receiving system and reflectivity retaining piece thereof.

Background technology

Condensation photovoltaic (Concentrating Photovoltaic, CPV) technology use optics with solar ray collecting to the solar cell of reduced size to produce electric energy.By this gathering, the area of solar cell can significantly reduce, thereby can reduce its cost.As shown in Figure 1, in the CPV module, except collective optics 100, also use second optical element (Secondary Optical Element, SOE) 200(or title photocon), improve the fault-tolerance of optic angle degree and improve the consistency of illumination on solar cell, but second optical element need be supported and locatees by a fixing or holding structure.U.S. patent application case US20090101207A1 discloses a kind of fixed structure, and as shown in Figure 2, it uses the housing 220 around non-imaging concentrator 214, and the top of this housing is in porch, top and the coupling of non-imaging concentrator of non-imaging concentrator.Chinese patent literature CN201622383U discloses a kind of solar energy CPV photoconductive tube positioner, as shown in Figure 3, this device comprises the inner aluminium post 2 of hollow-core construction that is, CPV photoconductive tube prism 1 inserts and is installed in the aluminium post, and CPV photoconductive tube prism top is provided with the aluminium ring.Chinese patent literature CN202149964U discloses a kind of solar energy prism table, as shown in Figure 4, it comprises tubular body 1, one end of body has for the installing hole that prism is installed, be fixed with the block piece that is positioned at the installing hole outside on the body, fixedly having in the body can provide elastic force to make the prism end keep and the lean elastic component of state of block piece.In addition, being to use silica gel 3 that the bottom of second optical element 2 and solar cell 4 are bonded together according to some schemes of prior art fixes, as shown in Figure 5, perhaps be bonded together with the sidepiece and the solar cell that are positioned at the bottom with the bottom of silica gel 3 with second optical element, as shown in Figure 6.The former is prone to the damaged situation of junction silica gel, and the latter reduces the optical efficiency of second optical element because the sidepiece of bottom is outer to be spilt from sidepiece for silica gel 3 can cause light.

The utility model content

A purpose of the present utility model provides a kind of condensation photovoltaic receiving system, and the fixed structure of its photocon is simple, the location is reliable and can improve optical efficiency.

Another purpose of the present utility model provides a kind of reflectivity retaining piece for described condensation photovoltaic receiving system.

For achieving the above object, the utility model is by the following technical solutions:

A kind of condensation photovoltaic receiving system comprises:

One or more photocons, described photocon includes an inlet and an outlet, and described photocon is used for receiving light and guiding light to described outlet from described entrance;

One or more solar cells that are positioned on the substrate are furnished with a described photocon on each described solar cell, described solar cell is used for receiving the light that penetrates from the described outlet of photocon;

One or more reflectivity retaining pieces, wherein said reflectivity retaining piece comprises around the reflective side walls of the bottom sidewall of described photocon, described reflective side walls is used for being positioned at described photocon on the described solar cell and when the bottom sidewall that has light from described photocon spills, the light that spills being reflexed to described solar cell.

Preferably, the profile of the bottom sidewall of the profile of the described reflective side walls of described reflectivity retaining piece and described photocon is complementary, and described profile is burnishing surface or curved surface.

Preferably, described photocon has four sidewalls, and described reflectivity retaining piece is configured around two relative sidewalls, three sidewalls or four sidewalls of the bottom of described photocon.

Preferably, described photocon is towards the direction of described solar cell narrow frustum shaped gradually.

Preferably, described photocon is the photoconduction prism.

Preferably, the described reflective side walls of described reflectivity retaining piece is made or is scribbled the reflector by reflective material.

Preferably, described reflective material is the aluminium of surface finish.

Preferably, described reflector is silver.

Preferably, described reflectivity retaining piece comprises two flanks that extend from described two relative sidewalls to both sides, and described flank has smooth surface, fits and be fixed on the described substrate in described smooth surface.

A kind of reflectivity retaining piece, the photocon that is used for location condensation photovoltaic receiving system, described reflectivity retaining piece comprises around the reflective side walls of the bottom sidewall of described photocon, described reflective side walls is used for described photocon is positioned at solar cell, and when the bottom sidewall that has light from described photocon spills, the light that spills is reflexed to described solar cell.

Because the reflectivity retaining piece is around the bottom sidewall of photocon, the reflectivity of retaining piece can make the light that the bottom side-walls of photocon easily spills originally (when using silica gel) be reflected to the surface of solar cell, thereby has improved the optical efficiency of photocon.Simultaneously, because the reflectivity retaining piece to the fixing effect of the bottom sidewall of photocon, can not cause the weakening to the photocon location because side-walls does not use silica gel yet.Because the reflectivity retaining piece is positioned at the bottom of photocon, rather than extends to the hollow-core construction on the top of photocon, and also not elasticity of demand spare locate, therefore saved material, reduced size, reduced cost.And because this structure of reflectivity retaining piece, it can have slim profile, and is conducive to obtain lighter weight, therefore is suitable for large-scale production and saves cost.

Description of drawings

Fig. 1 is the structural representation of CPV module;

Fig. 2-Fig. 4 is the structural representation of the positioner of three kinds of second known optical elements;

Fig. 5-Fig. 6 is for using the structural representation of silica gel 3 bonding second optical elements and solar cell;

Fig. 7 causes the schematic diagram of light leak for structure shown in Figure 6;

Fig. 8 is the three-dimensional view of an embodiment of the utility model condensation photovoltaic receiving system;

Fig. 9 is the three-dimensional view of the reflectivity retaining piece among another embodiment;

Figure 10 is the three-dimensional view of the reflectivity retaining piece among another embodiment;

Figure 11 is the three-dimensional view of another embodiment of the utility model condensation photovoltaic receiving system;

The cutaway view of an embodiment of Figure 12 the utility model condensation photovoltaic receiving system.

Embodiment

By reference to the accompanying drawings the utility model is further described in detail by the following examples.

See also Fig. 8-12, in some embodiments, the condensation photovoltaic receiving system comprise among one or more photocons 2, one or more solar cell 4 and the one or more reflectivity retaining piece 5(figure all only illustrate one), solar cell 4 and reflectivity retaining piece 5 all are positioned on the substrate 1.

Be furnished with a described photocon on each described solar cell 4, described photocon 2 includes an inlet and an outlet, described photocon 2 is used for receiving sunray and guiding light to described outlet from described entrance, and described solar cell 4 is used for receiving the light that penetrates from the described outlet of photocon 2.

Described reflectivity retaining piece 5 comprises around the reflective side walls 6 of the bottom sidewall of described photocon 2, described reflective side walls 6 is used for described photocon 2 is positioned at described solar cell 4, and when the bottom sidewall that has light from described photocon 2 spills, the light that spills is reflexed to described solar cell 4.

In preferred embodiment, the profile of the profile of the described reflective side walls 6 of described reflectivity retaining piece 5 and the bottom sidewall of described photocon is complementary.According to the concrete shape of the bottom of photocon, described profile can be burnishing surface or curved surface.

As Fig. 8-Figure 11, in some embodiments, described photocon 2 has four sidewalls, and described reflectivity retaining piece 5 can be configured to around two relative sidewalls, three sidewalls or four sidewalls of the bottom of described photocon.

In preferred embodiment, described photocon is towards the direction of described solar cell narrow frustum shaped gradually.The cross section of the truncated cone can be shaped form, also can be polygon such as tetragonal.

Described photocon 2 can be the photoconduction prism.

The described reflective side walls 5 of described reflectivity retaining piece 5 can be made by reflective material, also can be that the sidewall of reflectivity retaining piece scribbles reflector 7 and forms reflective side walls.Described reflective material for example is the aluminium of surface finish.Described reflector 7 for example is silver.

In some embodiments, described reflectivity retaining piece comprises two flanks that extend from described two relative sidewalls to both sides, and described flank has smooth surface, fits and be fixed on the described substrate 1 in described smooth surface.Described smooth surface can comprise step-like a plurality of surfaces, descends the surface on rank can have the fixed installation hole most.

The reflectivity retaining piece can be slim on the whole, very light in weight.

The reflectivity retaining piece can be made by technologies such as bending or punching presses.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims

1. a condensation photovoltaic receiving system is characterized in that, comprising:

One or more reflectivity retaining pieces, wherein said reflectivity retaining piece comprises around the reflective side walls of the bottom sidewall of described photocon, described reflective side walls is used for described photocon is positioned at described solar cell, and when the bottom sidewall that has light from described photocon spills, the light that spills is reflexed to described solar cell.

2. condensation photovoltaic receiving system as claimed in claim 1 is characterized in that, the profile of the bottom sidewall of the profile of the described reflective side walls of described reflectivity retaining piece and described photocon is complementary, and described profile is burnishing surface or curved surface.

3. condensation photovoltaic receiving system as claimed in claim 1 is characterized in that, described photocon has four sidewalls, and described reflectivity retaining piece is configured around two relative sidewalls, three sidewalls or four sidewalls of the bottom of described photocon.

4. as each described condensation photovoltaic receiving system of claim 1 to 3, it is characterized in that described photocon is towards the direction of described solar cell narrow frustum shaped gradually.

5. as each described condensation photovoltaic receiving system of claim 1 to 3, it is characterized in that described photocon is the photoconduction prism.

6. as each described condensation photovoltaic receiving system of claim 1 to 3, it is characterized in that the described reflective side walls of described reflectivity retaining piece is made or scribbled the reflector by reflective material.

7. condensation photovoltaic receiving system as claimed in claim 6 is characterized in that, described reflective material is the aluminium of surface finish.

8. condensation photovoltaic receiving system as claimed in claim 6 is characterized in that, described reflector is silver.

9. condensation photovoltaic receiving system as claimed in claim 3, it is characterized in that, described reflectivity retaining piece comprises two flanks that extend from described two relative sidewalls to both sides, and described flank has smooth surface, fits and be fixed on the described substrate in described smooth surface.

10. reflectivity retaining piece, the photocon that is used for location condensation photovoltaic receiving system, described reflectivity retaining piece is characterised in that, comprise around the reflective side walls of the bottom sidewall of described photocon, described reflective side walls is used for described photocon is positioned at solar cell, and when the bottom sidewall that has light from described photocon spills, the light that spills is reflexed to described solar cell.