KR20150138614A - Double-sided light receiving solar power generation device - Google Patents

Double-sided light receiving solar power generation device Download PDF

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Publication number
KR20150138614A
KR20150138614A KR1020140066725A KR20140066725A KR20150138614A KR 20150138614 A KR20150138614 A KR 20150138614A KR 1020140066725 A KR1020140066725 A KR 1020140066725A KR 20140066725 A KR20140066725 A KR 20140066725A KR 20150138614 A KR20150138614 A KR 20150138614A
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South Korea
Prior art keywords
solar cell
double
housing
transparent cover
module
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KR1020140066725A
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Korean (ko)
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기승철
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기승철
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Priority to KR1020140066725A priority Critical patent/KR20150138614A/en
Publication of KR20150138614A publication Critical patent/KR20150138614A/en

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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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  • Photovoltaic Devices (AREA)

Abstract

The present invention relates to a double-sided solar power generation apparatus. More specifically, the double-sided solar power generation apparatus cab generate electricity by using both surfaces of solar cells while ensuring high efficiency and high durability as well as moisture resistance. The apparatus prevents the efficiency of the solar cells from decreasing due to the radiation heat. The apparatus includes an inverter to easy maintenance of the double-sided solar cells and a solar cell module capable of drawing out the commercial power to output AC power independently. The double-sided solar power generation apparatus includes: a housing body forming a module installation unit having a space of a predetermined area on the inside; first and second space units which are sectioned by arranging transparent optical substrates on the middle part of the module installation unit; a light reflection means formed on the lower and side surfaces of the first and second space units; a solar cell module which is formed by electrically connecting one or more double-sided solar cells installed on the transparent optical substrates to generate electricity by using sunlight; and a transparent cover unit which is connected to the housing body through a coupling member to be closed and opened while letting the sunlight pass through.

Description

Double-sided light-receiving photovoltaic power generation apparatus {omitted}

The present invention relates to a double-sided light receiving photovoltaic power generation apparatus, and more particularly, to a double-sided light receiving photovoltaic power generation apparatus capable of preventing the deterioration of the efficiency of the solar cell due to the solar radiation radiant heat as well as the high efficiency, durability, A solar cell module capable of easily maintaining and repairing a double-sided light-receiving solar cell and drawing out the commercial power of the solar cell module having a predetermined generating capacity is provided with a double-sided light- Generating device.

In recent years, global warming and climate change have led to restrictions on the emission of carbon dioxide globally, and it is required to develop a new generation device that does not emit carbon dioxide.

There is no such emission of carbon dioxide, and power generation devices using solar energy are representative of power generation devices using clean energy. Recently, as the development and installation costs of technologies have become cheaper, the spread is spreading.

As the solar cell used for the solar power generation, a solar cell such as a Si crystal type solar cell, a Si thin film solar cell, a CIGS thin film solar cell, a CdTe thin film solar cell, a III-V semiconductor solar cell or an organic solar cell, Because it uses the principle that light energy is converted into electrical energy (photocurrent) in proportion to the intensity of incident sunlight, it is economically feasible to produce a large amount of electricity even in a small area.

In particular, solar cells, which are silicon crystals, are thinner than 0.3mm in thickness, so they are weak in strength, and tempered glass is attached to the surface, and thick synthetic resin is applied to the surface. It is called solar module (PV module). Here, solar cells can be connected in series or in parallel when needed, such as batteries and other chemical cells, so that the voltage and current can be increased.

As a method of converting the energy of solar light into electric energy, there is a method of converting the direct current power obtained from the solar battery into AC power by an inverter or the like and supplying it to various kinds of loads (for example, electronic products) Power generation systems are widely used.

2. Description of the Related Art Solar power generation systems, which are conventionally used in homes and the like, include a support frame mainly installed on a roof or a roof of a building, and a solar cell module (or a solar cell array ), A current collecting box for collecting DC power outputted from each of the solar cell modules, and an inverter connected to a load or the like by converting the power collected by the current collecting box into AC power.

In the above-described solar cell module, a plurality of cells are arranged and supported so as to obtain a predetermined voltage and current by an EVA resin or the like, and a front sheet made of transparent glass or the like is provided on the front side of the cell and a front sheet made of transparent or opaque A back sheet made of a glass plate or a synthetic resin plate is provided, and an aluminum frame is provided along the edge, and external terminals are provided on the outer surface of the back sheet.

However, in the conventional photovoltaic generation system configured as described above, optimal power generation performance is difficult to be exerted when a part of outputs of a plurality of solar cell modules are different from each other.

In the event of a problem such as failure or performance degradation of the inverter, there is a problem that the performance of the entire system deteriorates.

On the other hand, as a double-sided light receiving type solar cell power generation device using a solar cell module, there is disclosed a method of controlling the solar cell power generation device and the solar cell panel in Korean Patent Laid-Open Publication No. 10-2011-0136935, Condensing type solar cell power generation device "

In the above conventional solar cell power generator, when the solar cell module is manufactured, the solar cell is positioned between the cover glass and the insulator and is then subjected to high-temperature compression molding. Therefore, when the solar cell is defective or damaged, , And maintenance is difficult.

In addition, in the conventional solar power generation device, the back sheet of the solar cell module is damaged by the geothermal heat in a region such as a desert where the radiant heat on the ground is strong and the daytime difference is large, In addition, conventionally, there is a problem in that the installation area of the solar cell module is excessively consumed by producing electricity from the cross section of the solar cell.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above conventional problems, and it is an object of the present invention to provide a high efficiency solar cell which produces electricity on both sides, and to improve the waterproofing and moisture- And it is an object of the present invention to provide a double-sided light receiving solar power generation apparatus capable of preventing condensation due to a temperature difference to improve durability and facilitating maintenance of a solar cell.

It is another object of the present invention to provide a double-sided light receiving solar power generator capable of AC output by integrating or mounting an inverter device on a side or an outer side of a solar power generator having a double-sided light receiving solar cell.

It is also an object of the present invention to provide a double-sided light receiving solar photovoltaic power generation apparatus which is constructed by integrating a solar cell module terminal box and an inverter circuit into a double-sided light receiving solar power generating device.

According to an aspect of the present invention, there is provided a portable terminal comprising: a housing main body defining a module mounting portion having a predetermined area; A first space portion and a second space portion which are partitioned by disposing a transparent optical substrate in an intermediate portion of the module installation portion; And light reflecting means formed on the side surfaces of the first spatial portion, the side surfaces of the second spatial portion, and the lower surface; And a solar cell module provided on the transparent optical substrate and electrically connected to one or more double-side light-receiving solar cells for generating electricity on both sides by solar light; And a transparent cover portion which is connected to the housing main body by an engaging member and through which sunlight for sealing or opening the module mounting portion is transmitted.

Wherein the housing main body is filled with an inert gas or held in a vacuum state.

And the transparent cover portion is connected to the housing main body by a coupling member to open and close the module installation portion.

The transparent optical substrate is provided with a light diffusing portion having a relief pattern formed on one or both sides thereof.

Wherein the transparent optical substrate has at least one inclined surface or an uneven surface.

The solar cell module is provided with a front substrate, a rear substrate, and a filling layer disposed between the front substrate and the rear substrate for sealing. The solar cell module is coupled to the transparent optical substrate by an adhesive member without thermal fusion.

The photovoltaic module is mounted on the transparent optical substrate by being sealed by thermal fusion between a front substrate, a front substrate, and a double-sided light receiving solar cell only with a filling layer.

And an inverter device coupled to an inner surface or an outer surface of the housing body to convert DC power drawn from the solar cell module into AC power and output the converted AC power.

Wherein the inverter device includes a diode for blocking a reverse current flowing toward the solar cell module.

Wherein the housing main body includes a first housing having the module mounting portion formed therein and the module mounting portion being hermetically sealed or opened through engagement of the transparent cover portion; And a second enclosure coupled to the first enclosure.

Wherein the first housing and the second housing are coupled to each other by a hollow structure so as to be spaced apart from each other.

And a cooling fluid is provided in the hollow interior.

Wherein the cooling fluid is an antifreeze which is not frozen even when the temperature falls below zero.

And a circulation device for circulating the cooling fluid inside the hollow.

Wherein the hollow is a vacuum.

The transparent cover part is provided with a double-layer light receiving photovoltaic generation device.

The transparent cover part further includes optical means for selectively blocking infrared rays or ultraviolet rays or blocking all of them.

The transparent cover part further includes a light diffusing part for condensing, diffusing, scattering, and refracting sunlight into the interior of the housing main body.

Wherein the transparent cover portion further comprises a light diffusing portion for condensing, diffusing, scattering, and refracting sunlight into the interior of the housing body, and optical means for selectively blocking or blocking infrared or ultraviolet rays, Lt; / RTI >

According to the double-sided light receiving photovoltaic power generation apparatus of the present invention constructed as described above, a double-sided light receiving solar cell that generates electricity on both sides is used to produce a large amount of electricity even in a small area, And moisture resistance of the solar cell. In addition, it can prevent the solar cell from lowering efficiency or deformation by the radiant heat of sunlight, prevent condensation due to temperature difference and improve the durability, There is an advantage that it can be facilitated.

In addition, since each component required for solar power generation is assembled, it takes the structure of one assembly type, so it can be easily and easily handled when carrying, storing and constructing, and can be implemented as a product capable of AC output. .

1 is an exploded perspective view of a double-sided light receiving photovoltaic device according to the present invention.
FIG. 2 is an assembled cross-sectional view illustrating a double-side light receiving photovoltaic device according to the present invention.
3 is a perspective view showing a modification of the housing main body according to the present invention.
4 and 5 are sectional views showing a modified example of the transparent cover portion according to the present invention.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a double-sided light receiving photovoltaic device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5, the double-side photovoltaic apparatus 100 according to the present embodiment includes a housing main body 110 installed on a structure, and a housing main body 110 installed on the housing main body 110 to generate electricity on both sides by sunlight. The solar cell module 120 coupled to the inside of the housing 110 and the solar cell module 120 are seated to be disposed in the middle part of the inside of the housing body 110, A light reflecting means 110b for reflecting sunlight in the first space portion 148 and the second space portion 149 and a light reflecting means 110b for reflecting the sunlight in the first space portion 148 and the solar cell module 120 An engaging member 119a for engaging and fixing the housing main body 110 and the transparent cover part 130 so as to seal or open the housing main body 110 and an inverter device 140 for converting direct current power into alternating current power.

The double-sided photoreceptor type solar cell power generation apparatus 100 can produce a large amount of electricity with a small area, and the efficiency of the solar cell module 120 is lowered by radiation heat generated from the ground or the structure, , So that the condensation phenomenon due to the temperature difference of the installation place can be prevented.

To this end, the housing body 110 according to the present embodiment includes a module mounting portion 111 having a predetermined area for mounting the solar cell module 120 therein. At this time, the transparent optical substrate 121 formed in the inner middle portion of the module mounting portion 111 is located in the housing main body 110 to partition the first space portion 148 and the second space portion 149, One or more double-sided light receiving solar cells (120b) having light reflecting means (110b) formed on a side surface and a lower surface of the side surface of the space portion (148) and the second space portion (149) and generating electricity on both surfaces of the transparent optical substrate 123 are electrically connected to each other.

This structure is particularly effective when the sunlight incident by the light reflecting means 110b formed on the side of the first space portion 148 is guided to the front portion of the double-side light receiving solar cell 123, Receiving side solar cell 123 by the light reflecting means 110b formed on the side surface and the lower surface of the second space 149 when the solar light is incident on the transparent space formed between the double- The amount of generated electricity is increased and the amount of electricity generated by the entire double-side light-receiving solar cell 123 is remarkably increased.

At this time, when the side surface of the first space portion 148 and the side surface of the second space portion 149 are formed so as to condense, refract, or refract sunlight transmitted through the transparent cover portion 130 by the solar cell module 120 The light reflecting means 110b of the solar cell module 120 has at least one concavo-convex shape on the surface so as to improve the reflectance of sunlight transmitted to the solar cell module 120, A reflective lens may be further provided to improve the efficiency of photovoltaic power generation by improving the egg production rate

Here, the at least one double-sided light receiving solar cell 123 used in the solar cell module 120 may be a Si crystalline solar cell, a Si thin film solar cell, a CIGS thin film solar cell, a CdTe thin film solar cell, a III-V semiconductor solar cell Or photovoltaic cells, such as organic solar cells, that are designed to convert solar energy into electrical energy. A semiconductor device that converts light energy generated from the sun into electrical energy. As a material for photoelectric transformation (photoelectric transformation) in which electrons and holes are generated, a double-side light-receiving solar cell having a structure for producing electricity on both sides can be used without limitation.

The housing main body 110 has an electrode terminal member 105 for connecting the electrode line of the solar cell module 120 and the power source line 107 is connected to the electrode terminal member 105.

At this time, the power line 107 is coupled to the housing main body 110 through a waterproof insulator (not shown).

In addition, the inside of the housing body 110 may be filled with an inert gas or held in a vacuum.

This makes it possible to prevent the double-sided light receiving solar cell 123 from being in contact with moisture or air, and to prevent the phenomenon of heat flow.

The housing main body 110 may include a first housing 115 and a second housing 117 so as to fill an inert gas with the module mounting portion 111 or to discharge the air of the module mounting portion 111 to the outside. The first valve 101 is provided.

The housing main body 110 has a top opening shape and is formed by joining and separating the housing main body 110 and the transparent cover part 130 so that the opened top surface can be sealed or opened through the transparent cover part 130 A coupling member 119a is provided so as to be openable and closable.

The coupling member 119a may be of a tangential type, a hinge type, or a fastener type using a bolt or a nut.

Here, the hinge is a spindle type that is folded or driven to rotate the central shaft, and a metal material, a plastic material, or a composite material can be used.

The housing body 110 includes a seating portion 119 for stably sealing the transparent cover portion 130 along the upper edge portion of the housing main body 110. The edge portion of the transparent cover portion 130 Respectively. At this time, the transparent cover part 130 is brought into close contact with the seating part 119 by the elastic sealing member 119b so that the seating part 119 and the transparent cover part 130 are firmly and tightly engaged with each other. .

At this time, the sealing member 119b may be used as long as it is stretchable with synthetic rubber, silicone material, synthetic resin, or the like and is excellent in blocking moisture and air.

In addition, a transparent optical substrate 121 is located in the middle portion of the module mounting portion 111. The transparent optical substrate 121 is made of a plastic material or a glass material and at least one positive pattern on the end face or both sides of the transparent optical substrate 121 is formed. Various patterns such as a prism pattern and a lens pattern are formed, And transmits the sunlight to the light reflecting means 110b under the transparent optical substrate 121.

In addition, the transparent optical substrate 121 may include at least one inclined surface or an irregular surface to mount and fix a plurality of solar cell modules 120, thereby maximizing solar power generation

In addition, the solar cell module 129 may include a front substrate and a rear substrate for sealing, and a filling layer disposed between the front and back substrates, and may be attached to the transparent optical substrate 121 by an adhesive member without heat- have.

In addition, the solar cell module 120 may be installed on the transparent optical substrate 121 by being sealed between the front substrate and the front substrate only by the heat seal between the front substrate and the double-side light receiving solar cell 123 and the filling layer.

In addition, the inverter device 140 converts DC power drawn out from the solar cell module 120 into AC power and outputs the AC power.

The inverter device 140 has a box shape and has a protective case protruding from a plurality of radiating fins (not shown) at a predetermined interval on the surface of the outer cover, and an input terminal (not shown) electrically connected to a connecting terminal And an inverter circuit (not shown) for converting the DC power inputted through the output terminal (not shown) into AC power and drawing it out through an output terminal (not shown).

The protective case of the inverter device 140 is fixedly attached to the outer surface of the housing body 110.

The protective case of the inverter device 140 may be fixedly attached to the bottom surface of the housing body 110.

The protective case of the inverter device 140 may be integrally formed with the housing main body 110.

At this time, a cover plate (not shown) of the protective case may be separately formed.

Although not shown in the drawing, the connection terminal (not shown) and the input terminal (not shown) may be configured as a plug and a socket.

A rectifier diode (not shown) may be further provided between the inverter circuit (not shown) and the connection terminal (not shown).

The housing body 110 according to the present embodiment includes a first housing 115 and a second housing 117 coupled to an outer surface of the first housing 115 to maintain rigidity.

The housing body 110 includes a first housing 115 and a second housing 117 so as to form a hollow portion 113 in the form of a hollow 113a between the first housing 115 and the second housing 117. [ .

In addition, the hollow 113a between the first housing 115 and the second housing 117 may be filled with the cooling fluid 113c as means for cooling and controlling the temperature of the housing body 110. [

It is preferable that the cooling oil (113c) is free of antifreeze so that the cooling oil (113c) does not freeze in the winter season.

The housing body 110 may further include a circulation device (not shown) and a second valve 103 for injecting and discharging the second housing 117 so that the cooling fluid 113c can be charged or circulated have.

In addition, the hollow 113a may be formed in a vacuum state.

This may serve to reduce the transfer of heat from the outside to the solar cell module 120.

The first enclosure 115 and the second enclosure 117 are formed with flanges 115a and 117a, respectively, so that the upper end thereof extends outward so that the body 110 can be coupled to the structure using bolts or screws. At this time, fastening holes for fastening bolts and screws are formed on the flange portions 115a and 117a.

The transparent cover part 130 is provided with optical means 137 for selectively blocking or blocking off infrared rays or ultraviolet rays to prevent the life of the double-side light receiving type solar cell 123 from being shortened by infrared rays or ultraviolet rays .

At this time, the optical means 137 may be a thin film or a means for depositing a compound material on the surface layer of the transparent cover 130. In addition, the transparent cover part 130 may further include a light diffusion part 139 to further increase the power generation efficiency of the double-side light-receiving solar cell 123 by further increasing the condensation, scattering, diffusion and refraction of sunlight have. At this time, the light diffusion part 139 is formed to have various shapes such as a triangular shape, a prism shape, and a lens shape, and it is possible to integrate the shape of a thin film or a surface layer of the transparent cover part 130 as a material thereof.

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 embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: double-sided light receiving solar power generation device 110: housing main body 110b: light reflecting means
111: module mounting portion 113: hollow portion 113a: hollow 113c: cooling oil
115: first housing 117: second housing 119a: coupling member 120: solar cell module
121: transparent optical substrate 123: double-sided light receiving type solar cell 130: transparent cover part
137: optical means 139: light diffusing portion 140: inverter device 148: first space portion
149:

Claims (19)

A housing main body defining a module mounting portion having a predetermined space inside;
A first space portion and a second space portion which are partitioned by disposing a transparent optical substrate in an intermediate portion of the module installation portion; And light reflecting means formed on the side surfaces of the first spatial portion, the side surfaces of the second spatial portion, and the lower surface; And
A solar cell module provided on the transparent optical substrate and electrically connected to at least one double-sided light receiving solar cell for generating electricity on both sides by solar light; And
And a transparent cover portion that is connected to the housing main body by an engaging member and through which sunlight for sealing or opening the module mounting portion is transmitted. The connector according to claim 1,
Wherein the solar cell is charged with an inert gas or held in a vacuum state. 3. The method according to claim 1 or 2,
Wherein the transparent cover portion is connected to the housing main body by a coupling member to open / close the module installation portion. 3. The method according to claim 1 or 2,
Wherein the transparent optical substrate is formed with a light diffusing portion in a positive or negative pattern on one or both sides. The method of claim 1, 2, or 4,
Wherein the transparent optical substrate comprises at least one inclined surface or an uneven surface, 3. The method according to claim 1 or 2,
Wherein the solar cell module is attached to the transparent optical substrate by an adhesive member without a front substrate, a rear substrate, and a packing layer arranged between the front substrate and the rear substrate for sealing. 3. The method according to claim 1 or 2,
Wherein the solar cell module is installed on the transparent optical substrate by being sealed by thermal fusion between the front substrate, the front substrate, and the double-side light-receiving solar cell only with the filling layer. 3. The method according to claim 1 or 2,
Further comprising an inverter device coupled to the inner or outer surface of the housing body to convert direct current power drawn from the solar cell module into alternating current power and output the alternating current power. 9. The method of claim 8,
Wherein the inverter device comprises a diode for blocking a reverse current flowing toward the solar cell module, The connector according to claim 1 or 2,
A first housing having the module mounting portion formed therein and the module mounting portion being hermetically sealed or opened through engagement of the transparent cover portion; And a second enclosure coupled to the first enclosure. ≪ Desc / Clms Page number 20 > 11. The method of claim 10,
Wherein the first housing and the second housing are coupled to each other with a hollow structure so as to be spaced apart from each other. 12. The method of claim 11,
And a cooling fluid is provided in the hollow interior. 13. The method of claim 12,
Wherein the cooling fluid comprises an antifreeze that is not frozen even when the temperature falls below zero. 13. The method of claim 12,
Further comprising a circulation device for circulating the cooling fluid inside the hollow. 12. The method of claim 11,
Wherein the hollow is a vacuum. 3. The method according to claim 1 or 2,
Wherein the transparent cover portion has a multi-layer structure. 3. The method according to claim 1 or 2,
Wherein the transparent cover part further comprises optical means for selectively blocking infrared rays or ultraviolet rays or blocking all of them. 3. The method according to claim 1 or 2,
Wherein the transparent cover part further comprises a light diffusing part for condensing, diffusing, scattering, and refracting sunlight into the interior of the housing main body. 3. The method according to claim 1 or 2,
Wherein the transparent cover part further comprises a light diffusing part for condensing, diffusing, scattering, and refracting sunlight into the housing main body, and optical means for selectively blocking or blocking infrared or ultraviolet light. Photovoltaic devices.
KR1020140066725A 2014-06-02 2014-06-02 Double-sided light receiving solar power generation device KR20150138614A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3917004A1 (en) * 2020-05-29 2021-12-01 Total Se Photovoltaic module with enhanced heat extraction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3917004A1 (en) * 2020-05-29 2021-12-01 Total Se Photovoltaic module with enhanced heat extraction
WO2021239286A1 (en) * 2020-05-29 2021-12-02 Total Se Photovoltaic module with enhanced heat extraction

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