KR20160075968A - Light Converging Photovoltaic Module Utilizing the Reflected Light of Slope - Google Patents

Light Converging Photovoltaic Module Utilizing the Reflected Light of Slope Download PDF

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Publication number
KR20160075968A
KR20160075968A KR1020140184731A KR20140184731A KR20160075968A KR 20160075968 A KR20160075968 A KR 20160075968A KR 1020140184731 A KR1020140184731 A KR 1020140184731A KR 20140184731 A KR20140184731 A KR 20140184731A KR 20160075968 A KR20160075968 A KR 20160075968A
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South Korea
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case
light
solar cell
incident
sunlight
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KR1020140184731A
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Korean (ko)
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KR101642506B1 (en
Inventor
최영수
강호관
박경호
정상현
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(재)한국나노기술원
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Priority to KR1020140184731A priority Critical patent/KR101642506B1/en
Publication of KR20160075968A publication Critical patent/KR20160075968A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • 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

Abstract

The present invention relates to a light collecting solar battery module using reflected light including an optical system collecting sunlight and a solar battery cell to which the sunlight collected by the optical system is incident to produce solar energy, comprising: a case having a reflection space formed therein and allowing a plurality of solar battery cells to be installed on an inner surface thereof; a light incident part formed by opening one side of the case and allowing the sunlight collected by the optical system to be incident to an interior of the case; a reflective part formed on a lower surface portion within the case and allowing incident sunlight by the light incident part to be reflected to the reflection space; and a diffusion and reflection part formed on an inner surface of the case and diffusing and reflecting light reflected by the reflective part to provide the diffused and reflected light to the solar battery cells. According to the present invention, any extra optical system other than the single optical system is not required, and even in case a misfocus is made due to an error of a tracking system, the incident sunlight can be reflected and provided to the solar battery cells. Also, since a plurality of solar battery cells are provided as a single module, a device configuration is simplified and installation thereof is easy.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light converging photovoltaic module using reflection light,

The present invention relates to a light collecting type solar cell module using reflected light and, even when a focus is deviated due to an error of a tracking system, incident solar light is reflected to provide a solar cell, and a plurality of solar cells The present invention relates to a light collecting type solar cell module using reflected light for use in a light source.

With the development of semiconductors, the technology to convert sunlight directly into electric energy has developed. In photovoltaic power generation, various methods have been studied to improve energy efficiency. The easiest and most important development direction is to collect more light on the surface of the solar cell.

FIG. 1 is a conceptual diagram of a solar cell module that condenses using the existing first and second optical systems, and is intended to condense sunlight using an optical method.

The primary optical system 13 collects a large amount of light at a long distance and the secondary optical system 14 collects the light in accordance with each solar cell 12 individually. Each solar cell is mounted on a PCB (Printed Circuit Board) 11 and connected to a conductive wire 15.

Such a structure requires additional primary and secondary optical systems. In order to modularize two or more solar cells, an optical system is required as many as the number of solar cells.

Also, in order to concentrate the sunlight, Korean Patent Laid-Open No. 10-2009-0015019 discloses a method of tilting the solar cell according to the angle of light in order to collect more light on the surface of the solar cell.

However, in the above-described conventional technique, a power mechanism for always checking the direction of light and tilting the solar cell panel is required, and in addition to the optical system for focusing, a tracking system is necessarily required.

That is, even if the solar cell module does not face the sun accurately, and the angle is slightly changed, the focus can not be converged on the solar cell because the focus is shifted. Therefore, a complex two-axis tracking system is required to always face the sun.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a solar cell in which incident sunlight is reflected to provide a solar cell even when the focus is deviated due to an error of a tracking system, And an object of the present invention is to provide a light collecting type solar cell module using the same.

According to an aspect of the present invention, there is provided a solar cell module including an optical system for condensing solar light and a solar cell into which sunlight condensed by the optical system is incident, A case in which a reflecting space is formed inside and a case in which a plurality of solar cells are mounted on an inner side of the case; and a case in which one side of the case is open and solar light focused by the optical system is incident into the case A reflecting portion formed on an inner bottom surface of the case and configured to reflect sunlight incident by the light incidence portion to the reflecting space, and a reflecting portion formed on the inner surface of the case, And a diffuse reflector for diffusely reflecting the reflected light and providing the diffused reflector to the solar cell. And the amount of the battery module as a technical base.

In addition, it is preferable that the case is formed in an elliptical shape in longitudinal section, and is formed of metal or plastic.

It is preferable that the light incidence portion is formed so as to be inclined corresponding to the path of sunlight condensed by the optical system.

It is preferable that the case of the light incident portion region further includes a reflection layer on the outer surface.

Here, it is preferable that a plurality of the solar cell units are mounted on the inner surface of the case and are formed at positions where the reflected light is converged in the reflective space, And is mounted on the inner surface of the case.

Preferably, the reflector is formed in a triangular prism shape having a side edge upward so that sunlight incident by the light incidence portion is reflected symmetrically about the light incidence portion.

In addition, it is preferable that the surface of the reflection part is formed by metal plating, and the reflection part is formed in the shape of a protrusion or a step.

The diffuse reflection part may be formed on the inner surface of the case, and may be formed of a reflective sheet, or may be formed by coating barium sulfate or PTFE.

Here, the outer surface of the case is preferably formed in the form of a heat sink for heat dissipation in the reflective space.

It is preferable that a guide coupling hole is formed on the outer side surface of the case at a position corresponding to the guide receiving hole for coupling with the adjacent solar cell module.

The present invention eliminates the need for a separate optical system in addition to a single optical system and allows incident sunlight to be reflected into a solar cell even when the focus is deviated due to an error of the tracking system, So that the structure of the apparatus is simple and the installation is easy.

Further, according to the present invention, a reflection space including a reflection part and a diffuse reflection part is formed in the case so that the reflected light is focused on the solar cell, so that the solar cell is not affected by inclination of the sunlight, So that the power generation can be stably performed.

1 is a schematic diagram of a conventional condensing type solar cell module.
FIG. 2 is a schematic cross-sectional view of a main part of a light-collecting type solar cell module using reflected light according to the present invention. FIG.
3 is a schematic view showing another embodiment of the reflector of the light collecting type solar cell module using the reflected light according to the present invention.
Fig. 4 is a side schematic view of Fig. 3; Fig.
5 is a schematic view showing another embodiment of a condensing type solar cell module using reflected light according to the present invention.
6 is a schematic view showing a state of use of a light-collecting solar cell module using reflected light according to the present invention.

An object of the present invention is to provide a module that reflects incident light to provide a solar cell without adding a separate optical system in addition to a single optical system, even when the focus is deviated due to an error of the tracking system. Cell as a single module.

Particularly, the present invention forms a reflective space including a reflection part and a diffuse reflection part so that reflected light is condensed on a solar cell in a case, so that stable development can be achieved without being affected by inclination of sunlight.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a schematic cross-sectional view of a main portion of a light-collecting solar cell module using reflected light according to the present invention. FIG. 3 is a schematic view showing another embodiment of a reflector of a light- And FIG. 4 is a schematic view of a side view of FIG. 3. FIG. 5 is a schematic view showing another embodiment of a condensing type solar cell module using reflected light according to the present invention. FIG. Type solar cell module according to the present invention.

As shown in the figure, the present invention comprises an optical system 20 for concentrating sunlight and a solar cell 30 for receiving sunlight condensed by the optical system 20, The solar cell module includes a case 110 having a reflective space 111 formed therein and a plurality of solar cells 30 mounted on an inner surface of the case 110. One side of the case 110 is open, A light incidence part 120 formed to allow sunlight condensed by the optical system 20 to enter into the case 110 and a light incidence part 120 formed in the inner bottom part of the case 110, A reflection part 130 formed on the inner surface of the case 110 so as to reflect the sunlight incident on the reflection part 111 to the reflection space 111 and to diffuse and reflect the reflection light by the reflection part 130 And a diffuse reflector 140 provided to the solar cell 30, It is characterized.

The solar cell module according to the present invention basically includes an optical system 20 for primarily focusing sunlight. Conventionally, a primary optical system 20 and a secondary optical system 20 are used for efficient focusing, However, in the present invention, the single optical system 20 is provided to efficiently reflect the primary sunlight to be incident on the solar cell 30 formed at a predetermined position, so that the solar cell 30 ) Is further improved.

In particular, a plurality of solar cells 30 are mounted inside a case 110 of a predetermined shape so that reflected light is simultaneously incident on the reflective space, thereby further improving the power generation efficiency by a simple structure.

The case 110 according to the present invention has a reflective space 111 formed therein and a plurality of solar cells 30 mounted on the inner surface thereof. The case 110 may be made of a lightweight FRP or plastic material, It is more preferable that it is made of a metal material so as to increase the reflection efficiency of sunlight and effectively generate heat inside the reflection space 111.

Preferably, the case 110 is formed in an elliptical shape in its longitudinal section so that the reflected light can be effectively converged on the solar cell 30 mounted on the inner side of the case 110. The reflecting space 111 is also formed in an oval shape as a whole, Even when the focus is deviated due to the system error, 90% or more of the incident sunlight can be utilized.

That is, it is preferable that a plurality of solar cells 30 mounted inside the case 110 are installed, and the solar cells 30 are formed at a position where the reflected light is converged in the reflection space 111, do.

The solar cell 30 is arranged symmetrically with respect to a light incidence part 120 to be described later so that a large number of solar cells 30 are mounted in a single case 110, It is possible to provide a single module, so that the space utilization efficiency can be improved.

The outer surface of the case 110 may be formed in the form of a heat sink having a large cross-sectional area so as to efficiently discharge heat from the reflective space 111 or the solar cell 30.

The light incidence part 120 allows the sunlight condensed by the optical system 20 to enter into the case 110 and is an area where one side of the case 110 is open.

The case 110 may be formed in an elliptical shape and the light incident portion 120 may be formed at a central portion of the long side of the case 110 so as to be focused by the optical system 20 Sunlight is incident into the case 110 and is reflected to both sides of the reflective space of the case 110. [

Specifically, the light incidence part 120 cuts the case 110 along the central part of the longitudinal axis of the case 110 perpendicularly to the incidence direction of the sunlight, bends the cut part inward, 110 are opened.

It is preferable that the light incidence part 120 is formed to be inclined corresponding to the path of sunlight condensed by the optical system 20 for efficient incidence of the sunlight condensed into the case 110.

This is because the cut portion of the case 110 is bent inward and the angle formed by the long axis of the case 110 and the bent portion inside the case 110 exceeds 90 degrees, In accordance with the path of the sunlight to be condensed by the light source.

In addition, the length of the portion bent into the inside of the case 110 when the light incidence part 120 is formed is suitably formed in consideration of the size and shape of the solar cell 30.

As described above, in order to efficiently introduce sunlight into the solar cell 30, the solar cell 30 is disposed symmetrically with respect to the light incidence portion 120 on the inner surface of the case 110 This is because the solar cell 30 is mounted on the bent portion of the case 110 to form the light incidence part 120.

The case 110 of the light incident portion 120 further includes a reflective layer 112 formed on an outer surface thereof to further condense the light condensed by the optical system 20, To enter the interior. That is, a reflective layer 112 is formed on the portion of the case 110 bent inward to form the light incidence portion 120, and a portion of the case 110 on which the reflective layer 112 is formed, . The reflective layer 112 is formed on the upper surface of the case 110 by plating a metal such as silver, aluminum, zinc, or nickel with high reflectance.

The reflection unit 130 is formed on the inner bottom surface of the case 110 and reflects the sunlight incident by the light incidence unit 120 to the reflection space 111.

That is, sunlight condensed by the optical system 20 is guided by the light incidence part 120 and is incident into the case 110, and the case 110, on which the sunlight is incident, The condensed sunlight is reflected to the reflective space 111 and is supplied to the solar cell 30.

Specifically, the reflection part 130 is formed in a triangular column shape with its side edge facing upward so that sunlight incident by the light incidence part 120 is reflected symmetrically about the light incidence part 120 .

The sunlight condensed by the optical system 20 is guided through the light incidence portion 120 and is incident on the triangular prism-shaped reflection portion 130, the light is reflected from both sides of the reflection portion 130 The sunlight is split and incident into the reflective space 111.

In order to increase the reflectance, the surface of the reflective portion 130 is preferably formed by metal plating, and any one of silver, aluminum, zinc, and nickel may be used as the metal having a high reflectance, or an alloy thereof may be used. Further, an oxide film is further coated so that the surface of the metal is not oxidized so that the reflectance can be maintained.

3 and 4, the reflector 130 is formed in a concavo-convex or stepped shape to induce irregular reflection of incident sunlight so that reflection can be efficiently performed even when incident light loss occurs .

The diffuse reflector 140 is formed on the inner surface of the case 110 and diffusedly reflects the reflected light by the reflector 130 to provide the diffuse reflector 140 to the solar cell 30.

Specifically, the diffuse reflection part 140 is formed on the inner surface of the case 110, and may be formed of a reflective sheet, or may be formed of a material having high reflectance such as barium sulfate or PTFE, And is preferably formed by coating.

The diffuse reflector 140 diffuses and reflects the reflected light in the reflective space 111 by the reflector 130 so that the sunlight can be efficiently incident on the solar cell 30.

Meanwhile, the light-collecting solar cell module using reflected light including the above-described structure may be used as a plurality of solar cell modules connected in series or in parallel.

6 is a view illustrating a state in which the light collecting type solar cell modules according to the present invention are connected in parallel. In order to accomplish this, the case 110 has a guide receiving hole 150 And a guide coupling member 160 is further provided at a position corresponding thereto, so that a plurality of condensing type solar cell modules can be combined and stably used.

As described above, according to the present invention, incident solar light is reflected to provide a solar cell even when the focus is deviated due to an error of the tracking system, without adding a separate optical system in addition to a single optical system. It is provided as a single module, so that the configuration of the device is simple and the installation is convenient.

In particular, the present invention forms a reflective space including a reflection portion and a diffuse reflection portion so that reflected light is condensed on a solar cell in a case, thereby improving power generation efficiency of the solar cell without being affected by inclination of sunlight, So that it can develop steadily.

In addition, the case may have an oval shape in longitudinal cross-section so that the reflected light can be effectively converged on the solar cell mounted on the inner side, and the reflecting space may be formed in an elliptical shape as a whole, It is possible to utilize more than 90% of incident sunlight.

In addition, the solar cell mounted inside the case is arranged symmetrically with respect to a light incidence part to be described later, so that a large number of solar cells can be mounted in a single case to provide a single module, .

20: Optical system 30: Solar cell
110: Case 111: Reflective space
112: reflective layer 120:
130: reflection part 140: diffuse reflection part
150: guide receiving member 160: guide coupling member

Claims (12)

1. A solar cell module comprising an optical system for condensing sunlight and a solar cell into which sunlight condensed by the optical system is incident,
A case having a reflective space formed therein and a plurality of solar cells mounted on an inner surface thereof;
A light incident portion formed at one side of the case so as to be open and formed so that sunlight condensed by the optical system is incident into the case;
A reflection part formed on an inner bottom surface of the case and configured to reflect sunlight incident by the light incidence part to the reflection space; And
And a diffuse reflector formed on an inner surface of the case and diffusing and reflecting the reflected light by the reflector to provide the diffuse reflector to the solar cell. The electronic apparatus according to claim 1,
And the longitudinal section is formed in an elliptical shape, and is formed of metal or plastic. The light-emitting device according to claim 1,
Wherein the light source is formed so as to be inclined corresponding to a path of sunlight condensed by the optical system. The condensing type solar cell module according to claim 1, wherein a reflective layer is further formed on an outer surface of the case of the light incident portion. The solar cell according to claim 1,
Wherein the plurality of light sources are mounted on the inner surface of the case at a position where the reflected light is converged in the reflective space. The solar cell according to claim 5,
And is mounted on an inner surface of the case symmetrically with respect to the light incidence portion. 2. The display device according to claim 1,
And the solar light incident on the light incidence portion is formed in a triangular prism shape having a side edge upward so as to be symmetrically reflected about the light incidence portion. The condensing type solar cell module according to claim 1, wherein a surface of the reflective portion is formed by metal plating. 2. The display device according to claim 1,
And is formed in a concavo-convex or stepped shape. The liquid crystal display device according to claim 1,
A case formed on an inner surface of the case,
Reflective sheet, or coated with barium sulfate or PTFE. 2. The battery pack according to claim 1,
And the heat sink is formed in the form of a heat sink for heat dissipation in the reflective space. 12. The solar cell module according to any one of claims 1 to 11, further comprising a guide coupling hole at a position corresponding to a guide receiving hole for coupling with an adjacent solar cell module, Condensing type solar cell module using reflected light.
KR1020140184731A 2014-12-19 2014-12-19 Light Converging Photovoltaic Module Utilizing the Reflected Light of Slope KR101642506B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190037639A (en) * 2017-09-29 2019-04-08 한국전력공사 Solar power generation facilities
KR20190115221A (en) * 2018-04-02 2019-10-11 (주)그로빅 Photovoltaic power generation apparatusm to be installed on building

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080024309A (en) * 2006-09-13 2008-03-18 미래에너지기술(주) Solar focus type generation apparatus
KR20100012974A (en) * 2008-07-30 2010-02-09 박정일 A fuel induction type solar panels layered inside sunbeam-black hole
KR20100048276A (en) * 2008-10-30 2010-05-11 엘지이노텍 주식회사 Apparatus for solar power generation and device for concentrating light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080024309A (en) * 2006-09-13 2008-03-18 미래에너지기술(주) Solar focus type generation apparatus
KR20100012974A (en) * 2008-07-30 2010-02-09 박정일 A fuel induction type solar panels layered inside sunbeam-black hole
KR20100048276A (en) * 2008-10-30 2010-05-11 엘지이노텍 주식회사 Apparatus for solar power generation and device for concentrating light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190037639A (en) * 2017-09-29 2019-04-08 한국전력공사 Solar power generation facilities
KR20190115221A (en) * 2018-04-02 2019-10-11 (주)그로빅 Photovoltaic power generation apparatusm to be installed on building

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