KR101109105B1 - A structure of module concentrating photovoltaic(cpv) - Google Patents

Abstract

PURPOSE: A structure of a CPV(Concentrating Photovoltaic System) is provided to improve generation efficiency by collecting sunlight on a unit area and a support. CONSTITUTION: A support(2) is vertically erected in the top of a holder. A concentrating module(10) is formed on the top of the support. A plurality of heat radiation plates are formed in the body of the concentrating module with a constant interval. A heat sink is formed in the center of the body of a solar power generator. A solar cell optical lens is installed between a heat radiation bracket and the heat sink.

Description

A structure of module Concentrating PhotoVoltaic (CPV)}

The present invention relates to a structure of a high-concentration solar cell receiving module, and more particularly, to tightly fix a solar cell without moving and detaching, as well as to secure watertightness and close moisture by tight sealing. It is easy to assemble and maintain, which greatly improves the quality and reliability of the product so that users can plant a good image.

As is well known, solar cells or photovoltaic cells are devices that can convert solar energy into electrical energy. When the semiconductor junction region having the PN junction surface is irradiated with energy of greater than the prohibition band, electrons and holes are generated, and the internal electric field formed in the junction region moves electrons to N-type semiconductor and holes to P-type semiconductor to generate electromotive force. do. An electrode attached to each of the N-type semiconductor and the P-type semiconductor becomes a negative electrode and a positive electrode to take a direct current. As the material of the solar cell semiconductor, not only silicon but also gallium arsenide, cadmium tellurium, cadmium sulfide, indium phosphorus or a composite between these materials is used, but silicon is generally used. As of 2007, the cost of electricity made from photovoltaic cells is five times more expensive than the electricity we use at home, but we expect to secure competitiveness after 2010.

Invented by Bell Laboratories in the United States in 1954, the solar cells were used four years later in Vanguard spacecraft. At that time, solar cells had a power generation efficiency of 4%. As of 2008, EMCORE, a solar cell supplier to NASA and the European Space Agency, has recently developed a high-concentration photovoltaic (CPV) system for the ground, which generates up to 37% power generation efficiency. It is a high efficiency solar power generation technology that is three times higher than the 6 ~ 12% efficiency of the thin film method, and is recognized as the third generation solar cell technology following the thin film method. It was reported that 3SOFT will transfer core solar cell technology from NASA. The technology is an upgrade of the triple junction module commercialized by NASA, and has a generation efficiency of up to 28%. In addition, Shin Sung-eng (CEO Lee Wan-keun), who recently entered the solar cell manufacturing business, also recruited Dr. Young-Hyun Cho from the Solar Cell Research Institute of the University of New South Wales (UNSW). The UNSW research center has 24% solar cell power generation efficiency technology and is currently recognized as the world's top authority among solar cell research institutes. The CEOs of China's SunTech, Nanjing Solar, and others, all of whom are attracting attention as solar cell companies, are former doctors of UNSW, all of whom are professors of UNSW Martin Green. In addition, LG Taean Solar Power Plant, which started operation in July 2008, is Korea's largest solar power plant. Power generation efficiency is 17%.

Variables that characterize solar cell efficiency include open-circuit voltage (Voc), short-circuit current (Jsc), and fill factor (FF). The open-circuit voltage (Voc) is the potential difference formed at both ends of the solar cell when light is received while the circuit is open, i.e., infinite impedance. In the case of homojunction, the maximum possible Voc values are given by the difference in the work function between the p-type semiconductor and the n-type semiconductor. Since it is determined by the bandgap, using a material with a large bandgap generally results in a high Voc value. Short-circuit current (Jsc) is the current density in the reverse direction (negative value) that appears when light is received in a short-circuit state, i.e. without an external resistor. This value depends primarily on the intensity and spectral distribution of the incident light, but under these conditions, the electrons and holes excited by the light absorption do not lose due to recombination and how effectively they are externally inside the cell. It depends on whether it's sent to the circuit. Recombination losses can then occur either inside the material or at the interface. In addition, to increase Jsc, the reflection of sunlight from the solar cell surface should be reduced as much as possible. To do this, it is necessary to minimize the area covered by the sun when antireflection coating or metal contact is made. In order to absorb all possible wavelengths of light, the smaller the bandgap energy of the semiconductor, the more advantageous it is, but then the Voc will also decrease, requiring a material with an appropriate bandgap. Therefore, the theoretical optimal bandgap energy calculated to obtain the maximum magnitude of Voc and Jsc is 1.4 eV. Fill factor (FF) is the product of the current density at the maximum power point and the voltage value (Vmp × Jmp) divided by the product of Voc and Jsc. Therefore, the fill factor is an indicator of how close the shape of the JV curve is to the rectangle under light. The efficiency η of a solar cell is the ratio between the maximum power produced by the cell and the incident light energy Pin.

As a prior art document, Patent Registration No. 1017346 (Application No. 2010-0112011) (name: CPV solar tracking device and tracking method using the amount of power produced by a stilling engine generator) has been registered. That is, the above-described conventional technology attaches a Stirling engine generator that operates by using a power production to the rear of the solar light collecting module partitioned into a plurality of areas, and detects the amount of power coming from the Stirling engine generator in each zone to track sunlight. The present invention relates to a CPV solar tracking device and a tracking method using a production power of a Stirling engine generator to improve the light collecting efficiency, comprising: a solar light collecting module for generating electricity by collecting light incident from the outside; A Stirling engine generator which is configured on the rear surface of the light condensing module to rotate the solar light condensing module, and divides the solar light condensing module into a plurality of regions, and is installed in each of the divided regions, and the waste heat generated from the solar condensing module rear surface. Absorbs heat and converts the absorbed waste heat into electricity. A power amount detector for detecting the amount of power produced in each of the regions, support means for supporting the Stirling engine generator and the solar light collecting module, and a rotational drive configured to support the Stirling engine generator above the support means. And a control means for controlling the rotation driving body through the calculation by receiving the detected amount of power generated from the sieve and the power amount detecting unit and adjusting the angle of the solar light collecting module. However, the above-described prior art has many problems as follows. In other words, the conventional technology is not able to closely fix the solar cell has a problem that the solar cell moves and leaves. In addition, the prior art of the configuration as described above also has a problem that can not block the moisture due to the tight sealing and not ensuring the water tightness. In addition, the prior art of the above configuration has also caused a problem that the assembly and maintenance of the module is not easy.

The present invention has been made to solve all the problems of the prior art as described above, the first object of the solar light condensing module is provided to increase the power generation efficiency by collecting the sunlight more intensively on the support and unit area The second purpose of the present invention by the above-described technical configuration is to enable the solar cell to be tightly fixed without moving and detaching, and the third purpose is to secure watertightness and to block moisture by tight sealing. The fourth purpose of the module is to facilitate assembly and maintenance of the module, and the fifth purpose is to significantly improve the quality and reliability of the product, thereby allowing the user to plant a good image. To provide.

The present invention to achieve the above object is a vertical support standing on the top of the pedestal; And a solar light concentrating module provided at an upper end of the support and having a plurality of one or more at a predetermined interval and collecting the sunlight more intensively in a unit area to increase power generation efficiency. It provides a structure of a highly focused solar cell receiving module.

As described in detail above, the present invention is to provide a photovoltaic condensing module to increase the power generation efficiency by collecting the sunlight more intensively on the support and the unit area.

The present invention by the technical configuration described above is to be able to firmly fix the solar cell without moving and leaving.

In addition, the present invention is to close the water tightness and moisture by tight sealing.

In particular, the present invention is to facilitate the assembly and maintenance of the module.

The present invention is a very useful invention that can significantly improve the quality and reliability of the product due to the above-described effect so that the user can plant a good image.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention for achieving this effect are as follows.

1 is a front view of a product showing a high light concentrating solar cell receiving module structure according to the present invention;
Anaglyph.
Figure 2 is a rear main portion showing a structure of a high light collecting solar cell receiving module applied to the present invention
Exploded perspective view.
Figure 3 is a main part showing the structure of a high-concentration solar cell receiving module applied to the present invention
try.
4 is a view illustrating a solar cell of a highly light concentrating solar cell receiving module structure according to the present invention.
Exploded perspective view.
5 is a view illustrating a solar cell of a highly concentrating solar cell receiving module structure applied to the present invention.
Diagram.
Figure 6 is a cross-sectional view of the main portion of the structure of a high light collecting solar cell receiving module applied to the present invention.

The structure of the high-concentration solar cell receiving module applied to the present invention is configured as shown in FIGS. 1 to 6.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

First, the present invention is provided with a support (2) standing perpendicular to the top of the pedestal (1), as shown in Figs.

In addition, the present invention is provided on the upper end of the support (2), one or two or more are made of a plurality at regular intervals by the photovoltaic unit 20 to collect the sunlight more intensively in the unit area to generate power generation efficiency Solar condensing module 10 is provided so as to increase.

Each of the one or more solar light collecting modules 10 applied to the present invention is configured as shown in FIG. 3.

That is, the solar power generation unit 20 is assembled and installed, the fastening hole 13 of the rear cover in a state in which a part of the tip is installed through the hole 12 of the rear cover 11 of the solar light collecting module 10 And the fastening holes (21a) of the photovoltaic power generation unit is matched with each other and then installed as a fastening assembly with a bolt (not shown in the figure).

And one side of the body of the photovoltaic unit 20 applied to the present invention is provided with a fastening hole (21a) is fastened to at least one or more packings 22 and bolts can be configured to maintain airtightness when mutually coupled with the plate have.

In addition, a plurality of heat sinks 21 are formed on the body of the photovoltaic unit 20 applied to the present invention at regular intervals, and a heat sink 30 is provided at the center of one side of the body of the photovoltaic unit 20. The solar cell optical lens 25 is disposed between the heat sink 30 and the heat sink 30 and the heat sink 30, which are spaced apart from the heat sink 30 by the support bolt 26, and are installed at the tip. Is assembled and installed.

In particular, the heat sink 30 applied to the present invention is configured as shown in FIG.

That is, a plurality of upper fixing plate 31 and the lower fixing plate 35 formed with a fastening hole 37 is formed so that the plurality of support bolts 26 are fastened, the center of the lower fixing plate 35, the solar cell 38 The large hole 36 is formed to fit in the center of the upper fixing plate 31, and the small hole 32 is attached to the center of the upper fixing plate 31 so as to prevent detachment of the solar cell 38 and the solar cell optical lens 25 is fitted therein. Is formed.

At this time, as shown in Figure 5, the length "A" of the upper and lower fixing plates 31 and 35 are formed the same, but the length "B" of the large hole 36 into which the solar cell 38 is fitted is solar It is characterized in that it is formed larger than the length "C" of the small hole 32 to prevent the separation of the cell 38.

In addition, the heat dissipation bracket 27 applied to the present invention has an opening 28 formed in the center to hold the solar cell optical lens 25, and a plurality of cutouts 29 are formed at regular intervals to dissipate heat on the outside. do.

In addition, the solar cell optical lens 25 is preferably formed of a heat radiation bracket 27 that receives sunlight first, and a solar cell 38 that concentrates sunlight.

In addition, the support bolt 26 applied to the present invention may be selectively variable length or short depending on the size of the heat sink 21, the heat sink 30 and the heat radiating bracket 27 of course.

In the drawings, reference numeral 18 is a solar tracker attached to any position of the solar light collecting module 10, and 19 is a transparent plate assembled to the front end of the solar light collecting module 10.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

It is to be understood that the invention is not to be limited to the specific forms thereof which are to be described in the foregoing description, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

Referring to the effect of the structure of the high-concentration solar cell receiving module of the present invention configured as described above are as follows.

First, the present invention allows the solar cell to be tightly fixed without moving and detaching, as well as to secure watertightness and to block moisture by tight sealing, and in particular, to facilitate assembly and maintenance of the module.

Although the solar light collecting module 10 applied to the present invention is illustrated as being integrally provided with six pieces in the drawing, this is merely illustrated for convenience of description, and one or two or more of the solar light collecting module 10 are selectively provided. Of course, you can connect and use.

In addition, the solar light collecting module 10 may be used for various purposes, and may be manufactured and used in various forms such as vertical, horizontal, and inclined.

The structure of the high-concentration solar cell receiving module of the present invention is to increase the power generation efficiency by collecting the sunlight more intensively in the unit area. By using a solar cell suitable for the power generation to overcome the low efficiency of the existing crystalline solar light concentrating module and maximize the efficiency of the solar power generation.

To this end, in the present invention, the solar light collecting module 10 collects sunlight while chasing the sun by the sun tracker 18.

In this process, the solar light introduced into the solar condensing module 10 through the transparent plate 19 is solar cell 38 through the solar cell optical lens 25, which is a condensing lens having a 500x magnification through the opening 28. Is reached, and the solar light thus collected condenses to generate electricity.

The heat radiating bracket 27 applied to the present invention during the above process emits heat to the outside by the cutout 29, and condenses sunlight into the solar cell optical lens 25 through the opening 28. In addition, the solar cell optical lens 25 is closely held.

The sunlight passing through the solar cell optical lens 25 is concentrated on the solar cell 38 of the heat sink 30 to generate energy. The solar cell 38 is the upper and lower fixing plates 31 ( It is fixed not to move by 35).

That is, as shown in FIGS. 4 and 5, the solar cell 38 is inserted into the large hole 36 of the lower fixing plate 35 so as not to move.

Thereafter, the lower fixing plate 35 is placed on the upper fixing plate 31 on the upper part, and the small hole 32 of the upper fixing plate 31 is fixed by pressing the outer edge of the solar cell 38 so that the solar cell 38 is outside. It will prevent the departure from.

In more detail, since "A", which is the size of the upper and lower fixing plates 31 and 35, is the same, "C", which is the size of the small hole 32, is smaller than "B", which is the size of the large hole 36. The solar cell 38 is prevented from escaping to the outside.

In addition, the support bolt 26 is fastened between the upper and lower fixing plates 31 and 35 and the heat dissipation bracket 27, and one end of the support bolt 26 has a fastening hole 37 and a body of the heat dissipation plate 21. The other end is fastened to the heat dissipation bracket 27 is fixed.

In addition, the support bolt 26 may be selectively used to form a long or short variable length depending on the size of the heat sink 21, the heat sink 30 and the heat radiating bracket (27).

According to the present invention, the solar power generating unit 20 assembled as described above is installed in the solar light collecting module 10 as shown in FIG. 2. First, the solar power generating unit 20 is brought into contact with the cover 11. Although installed, the fastening hole 13 of the cover 11 and the fastening hole 21a of the photovoltaic unit 20 are matched with each other and then fastened with a bolt (not shown in the drawing) of the photovoltaic unit 20 ) Is firmly fixed to the cover 11.

In particular, in the assembling process of the photovoltaic unit 20, the heat radiation bracket 27 is first pushed into the photovoltaic module 10 through the hole 12 and then fastened with the bolt to cover the heat sink 21. (11) is in close contact with the outer packing 22 is pressed and consequently the photovoltaic unit 20 and the cover 11 is to maintain a tight airtight.

After assembling and installing the photovoltaic unit 20 on the solar light collecting module 10 as described above, if necessary to operate in the reverse order of the above-described operation, it can be easily disassembled, which is convenient for maintenance and repair unlike in the prior art. There is an advantage to working with it.

The technical idea of the structure of the high-concentration solar cell receiving module of the present invention is actually capable of repeating the same result.

<Explanation of symbols for the main parts of the drawings>
1: pedestal 10: solar light collecting module
20: photovoltaic unit 30: heat sink

Claims (9)

delete delete delete A support erected vertically on top of the pedestal; And is provided at the top of the support, one or two or more are made of a plurality of at regular intervals and a hole in the rear cover to increase the power generation efficiency by collecting the sunlight more intensively in the unit area by the solar power generation unit In the structure of the high-concentration solar cell receiving module provided;
A plurality of heat sinks 21 are formed on the body of the photovoltaic unit 20 at regular intervals, and a heat sink 30 is provided at the center of one side of the body of the photovoltaic unit 20. The solar cell optical lens 25 is assembled between the heat sink 30 and the heat sink 30 and the heat sink bracket 27 installed at the tip and spaced apart from the support bolt 26 by the support bolt 26. The structure of the high-concentration solar cell receiving module.
The method of claim 4,
The heat sink 30,
It consists of a pair of upper fixing plate 31 and the lower fixing plate 35 formed with a fastening hole 37 to fasten the plurality of support bolts 26, the center of the lower fixing plate 35 in the solar cell 38 A large hole 36 is formed to be fitted, and a small hole 32 is formed in the center of the upper fixing plate 31 so as to be in close contact with the solar cell 38 to prevent the solar cell optical lens 25 from being inserted therebetween. A structure of a high light collecting solar cell receiving module, characterized in that.
The method according to claim 5,
The length "A" of the upper and lower fixing plates 31 and 35 is formed to be the same, but the length "B" of the large hole 36 into which the solar cell 38 is fitted prevents the detachment of the solar cell 38. The structure of a high-concentration solar cell receiving module, characterized in that the small hole 32 is formed larger than the length "C".
The method of claim 4,
The heat dissipation bracket 27 is,
An opening 28 is formed in the center to hold the solar cell optical lens 25, and a plurality of cutouts 29 are further formed on the outside to dissipate heat. rescue.
The method of claim 4,
The solar cell optical lens 25,
The structure of the high-concentration solar cell receiving module, characterized in that the heat radiation bracket (27) that receives the sunlight first is wider, the solar cell (38) that concentrates sunlight is formed narrower.
The method of claim 4,
The support bolt 26 of the high-concentration solar cell receiving module, characterized in that the length of the variable to form a variable long or short depending on the size of the heat sink 21, the heat sink 30 and the heat radiating bracket (27). rescue.

Images