KR20170011572A - Solar battery using bifacial solar panels - Google Patents

Solar battery using bifacial solar panels Download PDF

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Publication number
KR20170011572A
KR20170011572A KR1020150104398A KR20150104398A KR20170011572A KR 20170011572 A KR20170011572 A KR 20170011572A KR 1020150104398 A KR1020150104398 A KR 1020150104398A KR 20150104398 A KR20150104398 A KR 20150104398A KR 20170011572 A KR20170011572 A KR 20170011572A
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South Korea
Prior art keywords
solar cell
cell panel
double
sided
angle
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KR1020150104398A
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Korean (ko)
Inventor
알렉산더 주
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오씨아이 주식회사
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Priority to KR1020150104398A priority Critical patent/KR20170011572A/en
Publication of KR20170011572A publication Critical patent/KR20170011572A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • 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
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • 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
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The present invention relates to a solar cell, and more particularly, to a solar cell using a double-sided solar cell panel.
The present invention provides a solar cell having a double-sided solar cell panel with a through region interposed therebetween and a reflector for reflecting sunlight incident on the passage region to the backside of the solar cell panel at a lower portion of the passage region .

Description

SOLAR BATTERY USING BIFACIAL SOLAR PANELS BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell, and more particularly, to a solar cell using a double-sided solar cell.

In the present industry, in order to improve the utilization efficiency of the solar cell, a technique of concentrating sunlight using a lens located between the solar cell and the sunlight or using a reflector reflecting the sunlight is used. Separately, a technique for improving the power generation efficiency by using a solar cell including a means for tracking the position of the sun is also used.

In general, a solar cell constituting a solar cell has a semiconductor element (crystalline silicon, etc.) having a light receiving surface on one side, and collects electrons / holes generated by the solar light on the light receiving surface as an electrode, Production. On the contrary, the double-sided solar cell is formed to produce electric power when both sides receive solar light, and studies for improving the power generation efficiency of the solar cell using double-sided solar cell have been actively conducted.

A related prior art document is US Pat. No. 5,538,563 (registered July 23, 1996) 'Solar energy concentrator apparatus for bifacial photovoltaic cells'.

In the prior art, a double-sided solar cell panel (a combined body of solar cell cells) is formed in a vertical direction, and a reflector is arranged at a 45-degree angle in a V-shape on both sides thereof. So that the light is incident at an angle of 90 degrees.

However, in such a configuration, both surfaces of the double-sided solar cell panel are exposed to the sunlight, and the temperature of the solar cell panel can be increased. This is because sunlight contains not only light energy but also infrared heat, and in actual semiconductor devices, when holes / electrons are generated, some energy is converted into thermal energy. If the temperature of the solar cell panel rises to some extent due to this heat, the life of the solar cell panel including the electric wire may be shortened.

In addition, there is a problem that the solar panel is arranged in the vertical direction and the reflector is formed at 45 degrees on both sides thereof, and the resistance of the wind blowing around the solar panel is greatly increased.

An object of the present invention is to provide a solar cell in which a double-sided solar cell panel is used to generate power through direct incidence of light to the front surface, and reflected light reflected by a reflection plate is incident on a rear surface of the solar cell.

Another object of the present invention is to provide a solar cell capable of improving power generation efficiency by providing a structure in which reflected light due to albedo reflection can be incident on the back surface.

Another object of the present invention is to provide a structure capable of smoothly communicating air, thereby reducing a load due to the wind received by the solar cell, and a solar cell capable of cooling the solar cell panel by air circulation smoothly .

The present invention relates to a two-sided solar battery cell for producing electricity through solar light incident on a front surface and a rear surface; A double-sided solar cell panel in which a plurality of the double-sided solar cells are arranged; A passing area disposed adjacent to the double-sided solar cell panel; And a reflector positioned at a lower portion of the passage region and having an inclined surface, the angle of which is adjusted so that the sunlight reflected by the inclined surface reaches the back surface of the double-sided solar cell panel.

Preferably, the pass area is formed as a region through which the neighboring solar cell can be separated by the two-sided solar cell panels.

The reflector may be formed in a triangular shape protruding toward the double-sided solar cell panel.

At this time, it is preferable that the upper end of the reflection plate is positioned below the back surface of the solar cell panel.

The width of the passage region is preferably 20 to 100% of the width of the solar cell panel.

It is preferable that the double-sided solar cell panels are formed in a rectangular shape, connected to each other in the longitudinal direction of the long side, and formed and arranged in the longitudinal direction of the short side.

The angle of the reflection plate is preferably in the range of 5 ° to 40 °.

And a communication space through which the wind can pass between the reflection plate and the back surface of the solar cell panel.

In addition, a frame for fixing the solar panel and the reflector may be provided.

And a tracker for adjusting an angle of the frame so that sunlight is incident on a front surface of the solar cell panel in a vertical direction according to a position of the sun tracked by the solar cell sensor, Further,

At this time, the solar light sensor may include a first solar light sensor for measuring the azimuth angle of the sun and a second solar light sensor for measuring the altitude angle of the sun.

In the solar cell according to the present invention, direct light is incident on the front surface using a double-sided solar cell panel, reflected light from the reflection plate and ground reflection due to the albedo effect can be incident on the back surface, .

The solar cell according to the present invention can reduce the strength required for the structure supporting the solar cell panel by providing a structure in which the wind resistance in the front-rear direction of the solar cell panel and the wind resistance in the lateral direction of the solar cell panel are small , Which can reduce the weight and cost of the entire structure.

This reduction in weight can reduce the driving force required by the tracker when a tracker, which is a solar tracking device, is used, and thus a relatively small capacity of the tracker can be used.

1 is a plan view of a solar cell using a double-sided solar cell panel according to an embodiment of the present invention,
2 is a side view of a solar cell using a double-sided solar cell panel according to an embodiment of the present invention,
3 is a view showing an embodiment of a reflector of a solar cell according to the present invention,
4 is a view for explaining the relationship between the angle of the reflection plate of the solar cell and the angle of incidence of the back surface of the solar cell according to the present invention,
5 is a view showing a solar cell using a general single-sided solar cell panel having no passage region, which is a component of the present invention,
6 is a view illustrating a solar cell using a double-sided solar cell panel according to an embodiment of the present invention,
7 is a view illustrating a state where a solar cell using a double-sided solar cell panel according to an embodiment of the present invention is coupled to a tracker.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

FIG. 1 is a plan view of a solar cell using a double-sided solar cell panel according to an embodiment of the present invention, and FIG. 2 is a side view of a solar cell using a double-sided solar cell panel according to an embodiment of the present invention.

As shown in the figure, a solar cell 100 using a double-sided solar cell panel according to an embodiment of the present invention includes a double-sided solar cell panel 110, a reflection plate 130, and a frame 140.

The double-sided solar cell panel 110 is formed by arranging a plurality of double-sided solar cell cells in an array shape. The double-sided solar cell panel 110 is powered by light incident on the front surface and is also generated by light incident on the back surface. Here, the array type means that a plurality of solar cells are arranged adjacent to each other and assembled.

In the present invention, direct light is incident on the front surface of the solar cell panel 110, and reflected light reflected through the reflection plate 130 is incident on the rear surface.

Also, light reflected from the ground by albedo can be incident on the back surface, thereby further increasing the power generation efficiency.

Albedo is the ratio of the total amount of light incident from the sun to the total amount of light traveling in various directions through scattering or reflections from the atmosphere or the ground, divided by the total amount of incoming light divided by the total number of incoming chips And it is also referred to as reflectance of solar radiation. The reflectance of 80 to 90% of clean snow, 5 to 25% of grass, 17 to 27% of concrete, 30 to 60% of white sand, 5 to 15% of dark soil and 25 to 30% of light soil .

For example, if the solar cell panel according to the present invention is installed on a light colored soil having an albedo reflectance of 30%, the sunlight reflected by the reflector may additionally cause 30% solar light to be incident due to albedo reflection It comes.

On the other hand, the lifetime of the solar panel is related to the temperature of the solar panel, and if the operating temperature of the solar panel is too high, the service life is shortened. In the case of the conventional power generation apparatus described in the background art, the operating temperature of the solar panel is relatively high because the wind communication is not smooth. On the other hand, the photovoltaic device according to the present invention has a smooth wind communication structure, so that the operating temperature of the solar panel is relatively low, which can improve the lifetime of the solar panel.

The double-sided solar cell panel 110 is generally formed in a rectangular shape. In the illustrated solar cell panel 110, the long side L is referred to as a long side and the relatively short side W is referred to as a short side.

In the illustrated embodiment, 36 double-sided solar cell panels 110 are arranged such that short sides of neighboring double-sided solar cell panels 110 are in contact with each other, and the long side of each double- 120, respectively. As shown in Fig. 1, the portions of the double-sided solar cell panels at each end in the up and down directions are disposed adjacent to each other.

The present invention is characterized in that a passing area 120 is formed between adjacent two-sided solar cell panels 110 to reflect sunlight incident on the passing area 120 using a reflection plate 130, And is incident on the back surface of the light guide plate 110. The passage area 120 is formed as a space allowing the wind to pass along with the sunlight.

In general, a plurality of solar panels 110 are arranged in an array form to constitute a solar cell. In general, the size of a solar cell composed of an array is formed to have a length of several meters to several tens of m in length.

However, due to such a size, it is formed so as to withstand loads due to wind pressure. The present invention is characterized in that solar light can pass between solar cell panels (110) and a load applied to a structure by wind pressure is reduced by forming a passage area through which wind can communicate.

Particularly, the load due to the wind pressure becomes a very important design factor in the driving force and the mechanical stiffness of the tracker when it is attached to the tracker that adjusts the angle of the solar panel by tracking the position of the sunlight. In the case of driving force, the angle of the solar cell should not be arbitrarily changed by the wind pressure, the angle should be able to withstand the wind pressure, and the mechanical rigidity should be such that the tracker is not deformed by the wind pressure.

The reflection plate 130 reflects the sunlight passing through the passage region 120 and is incident on the back surface of the solar cell panel. The reflection plate 130 is preferably formed of a mirror material whose surface can reflect sunlight by 90% or more.

The reflection plate 130 is located at a lower portion of the passage area and has an inclined surface. At this time, the angle must be adjusted so that the sunlight reflected by the inclined surface reaches the back surface of the double-sided solar cell panel. The inclined surface may be formed as a flat surface as shown, or may be formed as a concave curved surface or a convex curved surface in another shape.

The reflection plate 130 is formed at a lower portion of the pass area. The reflection plate 130 is preferably formed such that the upper end of the reflection plate 130 is at the same height as or lower than the back surface of the double-sided solar cell panel 110.

In the illustrated embodiment, the upper end of the reflection plate 130 is spaced apart from the back surface of the double-sided solar cell panel 110 by a predetermined distance (indicated by D in FIG. 3). When the upper end of the reflection plate 130 is spaced apart from the back surface of the double-sided solar cell panel 110, a horizontal communication space in which wind can communicate between the double-sided solar cell panel 110 and the reflection plate 130 . This structure is designed to reduce the load on the wind in the horizontal direction and to prevent the sunlight passing through the passing area 120 from deviating from the back surface of the solar cell panel and to keep the angle of incidence to the back surface above a certain angle So as to utilize the sunlight more efficiently.

The frame 140 is a structure for fixing the solar cell panel 110 and the reflection plate 130.

The frame 140 may be formed by connecting a wire, a sheet, a pipe, or a rod. Since the frame 140 also generates a wind load, it is preferable that the thickness of the wire members constituting the frame 140 is formed to a minimum thickness for securing strength.

When the thickness of the frame 140 is increased, sunlight incident on the back surface of the double-sided solar cell panel is blocked by the frame 140. In the conventional photovoltaic device using only one surface, The thickness of the frame does not affect the power generation efficiency. However, in the case of the solar cell according to the present invention, the reflected light due to the albedo reflection can be incident on the back surface together with the light reflected by the reflection plate 130 This is because when the thickness of the frame is large, reflected light due to albedo reflection can be obscured.

Accordingly, in the present invention, a wind is generated through the space between the solar cell panel 110 and the passage area 120, between the solar cell panel 110 and the reflection plate 130, The thickness of the wire or the like constituting the frame is preferably as small as possible in order to utilize the sunlight due to the ground reflection.

For this purpose, the frame 140 may be formed in a grid-like box shape in the form of a wire frame as shown in the figure.

In general, a double-sided solar cell panel has a rectangular shape having a relatively long side and a relatively short side.

In arranging the rectangular double-sided solar cell panel, as shown in FIG. 1, the short sides W of the double-side solar cell panels are preferably connected to each other and the long side L is arranged adjacent to the passing area .

When the long sides L are connected to each other unlike the embodiment of the present invention, the width of the double-sided solar cell panels 110 connected to each other is widened so that both the reflector 130 and the frame 140 must be large in size, This is because the width of the area subjected to resistance by the wind increases and the magnitude of the wind pressure by the wind increases.

The width G of the passage region 120 is preferably equal to or smaller than the short side W of the double-sided solar cell panel. The width G of the passage region 120 is smaller than the width W of the solar cell panel because the solar light passing through the passage region 120 is incident on the back surface of the solar cell panel 110 using the reflection plate 130. [ It is not possible to use all of the sunlight passing through the passage region.

More preferably, the width G of the pass area is preferably in the range of 20 to 100% of the width of the solar cell panel. When the width of the pass area is less than 20%, the efficiency of improving the efficiency is small because the amount of reflected light incident on the back surface is small. When the width of the pass area exceeds 100%, the efficiency of the solar cell is relatively small Because.

FIG. 3 is a view showing an embodiment of a reflector of a solar cell according to the present invention, and FIG. 4 is a view for explaining the relationship between the angle of the reflector and the angle of incidence of the back surface of the solar cell according to the present invention.

The reflection plate 130 is formed at a lower portion of the passage region 120. The reflection plate 130 is preferably formed at a lower side thereof from the double-sided solar cell panel 110 with a predetermined distance D therebetween.

At this time, the predetermined interval D should be set so that the light reflected from the upper end of the reflection plate can be incident on the back surface of the double-sided solar cell panel 110. If the predetermined distance D is not secured, a part or all of the light reflected by the reflection plate 130 may escape to the pass area 120 again. If the reflector is higher than the back of the top two-sided solar panel, the sunlight reflected from the top of the reflector can not be incident on the back of the two-sided solar panel.

Also, it is preferable that the reflection plate 130 has an isosceles triangle shape so as to reflect sunlight transmitted through the passage region 120 to the back surface of the solar cell panels on both sides by 50%.

When the reflector 130 is formed in an isosceles triangle shape, the sunlight passing through the passage region 120 can be divided by 50% and reflected to the solar cell panels on both sides. It is possible to reduce the resistance by wind.

However, the reflector 130 may have a longer triangular shape than an isosceles triangle shape, depending on the purpose. This is because the passage region 120 is disposed between the plurality of double-sided solar cell panels 110, When a pass area is arranged above and below the battery panel 110, the longer triangles of one side are arranged at the upper and lower sides, respectively, so that the light entering the back surface of the double-side solar cell is maintained substantially the same.

As a result, the shape of the reflection plate 130 must be such that the width of the passage area 120, the angle of the reflection plate, and the constant distance D are taken into consideration. As shown in FIG. If a part of the sunlight can not reach the rear surface or deviates from the rear surface area, the power generation efficiency is lowered.

Referring to FIG. 4, when the angle of the reflection plate is?, The angle at which the sunlight enters the reflection plate is incident at an angle of? With the perpendicular of the reflection plate. The angle incident on the reflection plate is reflected with the same angle with respect to the waterline of the reflection plate, and is incident on the back surface of the solar panel.

Therefore, since the lower apex angle of the triangle drawn by the dotted line becomes 2?, The apex angle of the right side becomes 90? -2 ?, and this angle becomes the incident angle to the back surface. In other words, the angle incident on the back surface of the double-sided solar panel has an angle of 2α and a perpendicular line on the back surface of the double-sided solar panel.

The angle incident on the back surface of the double-sided solar cell panel is related to the angle? Of the reflection plate. However, since the solar power generation amount is not increased / decreased according to the incident angle but is determined by considering the incident angle and the area (in the back surface of the double-sided solar cell) that the light reaches, the actual incident angle is more than 0 ° and less than 90 ° . However, considering the mechanical design factors, 10 ° to 80 ° is more desirable.

As mentioned above, when the angle of incidence (90 ° -2α) is 10 ° or 80 °, the angle α of the reflector must be 40 ° or 5 °, respectively, so that the angle of the actual reflector is 5 ° to 40 ° It would be desirable.

As the angle? Of the reflector decreases, the angle of incidence incident on the back surface of the solar cell panel becomes larger. However, when the angle of incidence becomes larger, the light incident on the upper end of the reflector does not exit into the passing area, The installation depth (D) of the reflector must be sufficiently deep so that the angle of the reflector must be taken into consideration.

Consequently, it is preferable that the angle (a) of the reflection plate for preventing the size of the solar cell from becoming excessively large due to the depth of the reflection plate is ensured to be 5 ° or more and 40 ° or less.

FIG. 5 illustrates a solar cell using a conventional single-sided solar cell panel, and FIG. 6 illustrates a solar cell using a double-sided solar cell panel according to an embodiment of the present invention.

5 and 6, solar cells having a length of 2 m and a width of 1 m are arranged in an array. In the case of FIG. 5, the solar cells are arranged at 6 x 7, and have a length of 12 m and a length of 7 m. 6 * 6, and has a passage area of 60 cm and a length of 12 m and a length of 9.6 m.

Assuming that the power generation amount of one surface of the solar panel is 10, it represents the power generation amount of 420 in the case of Fig. In the case of FIG. 6, 360 power generation amount is generated through the front surface. When the passage area is 60% of the area of the double-sided solar panel and all sunlight reflected by the reflection plate touches the back surface, Lt; / RTI > In addition, assuming that the albedo reflectance is 22%, the albedo reflectance adds 360 * 22% of the power.

As a result, in the case of the embodiment of FIG. 6, the power generation amount of 655,2 is obtained.

The number of solar panels used is reduced by 6, but the power generation amount is increased by about 56%.

5, the generation amount per unit area is 5, and in the case of the photovoltaic device of FIG. 6, the generation amount per unit area is 5.68, and the increase amount per unit area is 13% .

Considering the reduction of the cost due to the decrease in the number of solar panels, the generation amount per unit price will be increased by more than 25%.

Meanwhile, the solar cell according to the present invention may include a tracker for changing the angle of the solar cell panel according to the position of the sun. 7 This is to assure the maximum amount of sunlight incident on the solar cell by combining the solar cell on the rotating means rotated according to the position of the sun. In general, the maximum amount of sunlight is a case where sunlight is vertically incident on the solar cell, so that the solar cell 100 can be always arranged perpendicularly to the sunlight through the tracker 200. [ In this case, a solar light sensor for tracking the position of the sun can be provided.

When the solar cell attached to the tracker is used, sunlight incident on the upper surface of the double-sided solar cell panel can be maintained vertically at all times, and sunlight incident on the back surface of the double- It is possible to control the amount of electric power generated by the solar cell constantly.

The solar sensor may include a first solar sensor 152 for measuring the azimuth angle of the sun and a second solar sensor 154 for measuring the altitude angle of the sun as shown in Fig. 7, the tracker 200 includes a strut 210 fixed to the ground, a rotating shaft 220 rotatably coupled to the strut, a frame 220 connecting the rotating shaft 220 and the frame 140, And an angle adjusting cylinder 230 that adjusts the inclination angle of the solar cell panel.

The rotation axis 220 is rotated according to the azimuth angle of the sun and the angle of the angle adjusting cylinder 230 is changed according to the altitude angle of the sun and the inclination angle of the solar cell panel is controlled.

The structure of the tracker 200 is merely an example, and the structure of the tracker 200 is not limited to this, and the angle of inclination of the solar cell panel may be adjusted using a driving motor of the length adjusting cylinder.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

100: Solar cell
110: Solar panel
120: passage area
130: reflector
140: frame
152: first solar light sensor
154: second solar light sensor
200: Tracker
210: holding
220:
230: Angle adjusting cylinder

Claims (11)

A double-sided solar cell that produces electricity through sunlight incident on the front and back sides;
A double-sided solar cell panel in which a plurality of the double-sided solar cells are arranged;
A passing area disposed adjacent to the double-sided solar cell panel; And
And a reflective plate positioned at a lower portion of the passage region and having an inclined surface, the angle of which is adjusted so that the sunlight reflected by the inclined surface reaches the back surface of the double-sided solar cell panel.
The method according to claim 1,
Wherein the passage region is a region through which the neighboring solar cell is separated from the double-sided solar cell panel and through which solar light can pass.
The method according to claim 1,
Wherein the reflection plate is formed in a triangular shape protruding toward the double-sided solar cell panel.
The method according to claim 1,
And the upper end of the reflector is located below the back surface of the solar cell panel.
The method according to claim 1,
Wherein a width of the passage region is 20 to 100% of a width of the solar cell panel.
The method according to claim 1,
The double-sided solar cell panel
Are formed in a rectangular shape and are connected and arranged in the longitudinal direction of the long side,
And a passage region is formed and arranged in the longitudinal direction of the short side.
The method according to claim 1,
Wherein the angle of the reflection plate is in the range of 5 ° to 40 °.
The method according to claim 1,
Wherein a communication space is formed between the reflection plate and the back surface of the solar cell panel so that air can pass through the space.
The method according to claim 1,
And a frame for fixing the solar cell panel and the reflection plate.
10. The method of claim 9,
A solar sensor for tracking the position of the sun;
And a tracker for adjusting an angle of the frame so that sunlight is incident on a front surface of the solar cell panel in a vertical direction according to the position of the sun tracked by the solar cell sensor.
11. The method of claim 10,
The solar sensor
A first solar light sensor for measuring the azimuth of the sun;
And a second solar light sensor for measuring an altitude angle of the sun.
KR1020150104398A 2015-07-23 2015-07-23 Solar battery using bifacial solar panels KR20170011572A (en)

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CN108418542A (en) * 2018-05-08 2018-08-17 广东盛迎低碳技术研究有限公司 A kind of device of solar generating
WO2019200405A1 (en) * 2018-04-14 2019-10-17 Solaria Corporation Bifacial photovoltaic module
WO2020034273A1 (en) * 2018-08-17 2020-02-20 四川钟顺太阳能开发有限公司 Dual-axis solar tracker-based double-sided photovoltaic module system and method for utilizing back surface of double-sided photovoltaic module
KR20200091268A (en) * 2019-01-22 2020-07-30 상명대학교산학협력단 Photovoltaic power generating apparatus
KR102165092B1 (en) * 2020-02-11 2020-10-13 주식회사 엘라이온 Double sided solar light concentrator using Valley Type reflector
WO2021095005A1 (en) * 2019-11-15 2021-05-20 Giacomo Roccaforte Photovoltaic and light transmission modulating panel and roof for the construction of roofs or facades with shading systems
WO2021178244A1 (en) * 2020-03-02 2021-09-10 Skylite Solar Inc. Solar module racking system
KR20210126242A (en) * 2020-04-10 2021-10-20 한국에너지기술연구원 A setup structure of a both sides light reception type solar cell module
EP3923467A1 (en) * 2020-06-09 2021-12-15 Luxmundi Double-sided photovoltaic solar panel
CN114285354A (en) * 2020-09-26 2022-04-05 旭东环保科技股份有限公司 Solar panel support device and system thereof
IT202100014801A1 (en) * 2021-06-07 2022-12-07 Luxmundi Srl Double-sided photovoltaic solar panel
KR102548523B1 (en) * 2023-03-17 2023-06-28 (주)썬로드테크 Windproof apparatus combined solar power generation
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019200405A1 (en) * 2018-04-14 2019-10-17 Solaria Corporation Bifacial photovoltaic module
CN108418542A (en) * 2018-05-08 2018-08-17 广东盛迎低碳技术研究有限公司 A kind of device of solar generating
WO2020034273A1 (en) * 2018-08-17 2020-02-20 四川钟顺太阳能开发有限公司 Dual-axis solar tracker-based double-sided photovoltaic module system and method for utilizing back surface of double-sided photovoltaic module
KR20200091268A (en) * 2019-01-22 2020-07-30 상명대학교산학협력단 Photovoltaic power generating apparatus
WO2021095005A1 (en) * 2019-11-15 2021-05-20 Giacomo Roccaforte Photovoltaic and light transmission modulating panel and roof for the construction of roofs or facades with shading systems
KR102165092B1 (en) * 2020-02-11 2020-10-13 주식회사 엘라이온 Double sided solar light concentrator using Valley Type reflector
WO2021178244A1 (en) * 2020-03-02 2021-09-10 Skylite Solar Inc. Solar module racking system
EP4115518A4 (en) * 2020-03-02 2024-04-03 Planted Solar Inc Solar module racking system
KR20210126242A (en) * 2020-04-10 2021-10-20 한국에너지기술연구원 A setup structure of a both sides light reception type solar cell module
EP3923467A1 (en) * 2020-06-09 2021-12-15 Luxmundi Double-sided photovoltaic solar panel
CN114285354A (en) * 2020-09-26 2022-04-05 旭东环保科技股份有限公司 Solar panel support device and system thereof
CN114285354B (en) * 2020-09-26 2024-05-14 旭东环保科技股份有限公司 Solar panel supporting device and system thereof
ES2951199R1 (en) * 2020-11-25 2023-12-12 Gamechange Solar Corp Bifacial Solar Panel Assembly with Reflector
IT202100014801A1 (en) * 2021-06-07 2022-12-07 Luxmundi Srl Double-sided photovoltaic solar panel
KR102548523B1 (en) * 2023-03-17 2023-06-28 (주)썬로드테크 Windproof apparatus combined solar power generation

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