KR20230039212A - Multiple Panel Solar Cell Box and Generating Method Thereof - Google Patents

Abstract

The present invention relates to a multi-panel type solar cell enclosed body and a generation method using the same. In order to solve constraints of an installation space through a multi-structure design of a solar cell panel converting sunlight or everyday lighting light into electric energy, and increase the use efficiency of electric energy using discarded lighting light for electric power production, the solar cell enclosed body is formed by combining an upper unit (A) and a lower unit (B), wherein the upper unit (A) is manufactured as an integrated body by arranging lightguide panels (4) at regular intervals on an upper plate (5) of a transparent reinforcement material, and the lower unit (B) is formed to enable the lightguide panels (4) to be inserted between a plurality of both-sided solar cell panels (3) by vertically installing the solar cell panels (3) at regular intervals with an outer wall (1) provided with a reflection layer (2). In accordance with the present invention, a plurality of solar cell panels and lightguide panels can be easily assembled with a box-shaped enclosed body having an inner wall made of a reflection plate, high generation efficiency in contrast to an occupied area can be acquired using sunlight and lighting light, and manufacturing costs and generation costs can be reduced due to the use of a solar cell intentionally excluding a texturing treatment on the surface of the solar cell or the formation of a reflection prevention film.

Description

Multiple Panel Solar Cell Box and Generating Method Thereof

The present invention relates to a multi-panel solar cell enclosure and a power generation method using the same, and more particularly, by designing a solar cell panel that converts sunlight or everyday illumination light into electrical energy in a multi-structure to overcome the limitations of the installation space. It relates to a multi-panel solar cell enclosure and a power generation method using the same that can increase the use efficiency of electric energy by using discarded lighting light for power generation.

Recently, as interest in eco-friendly energy increases, energy harvesting technology that converts ambient energy sources such as wind, heat, sun, and vibration into electric energy and uses it usefully is attracting attention. Energy harvesting technology is a technology that harvests a small amount of energy that is discarded or unused on a daily basis and converts it into usable electrical energy. Due to the advantage of having effectiveness in operating the device, the application range is gradually expanding.

Among them, solar cells using light energy, developed first, are a representative technology with high technology maturity and already commercialized. Currently, research is ongoing to overcome factors that limit efficiency such as power generation cost, weather and time, and installation space. In particular, interest in power devices with high energy density per unit volume that can be used for a long time in places where commercial power is not supplied or in the process of outdoor activities such as camping is greatly increasing.

In line with these times, technologies that can overcome the limitations of installation space and increase energy conversion efficiency are emerging one after another in the field of solar cells.

First of all, in Patent 10-1707716 (Prior Patent 1), the first power generation unit and the second power generation unit are spaced apart and a light diffusion member is provided between them, so that when sunlight is incident, the first power generation unit generates primary power, and then the first power generation unit By designing secondary power generation in the 2nd power generation unit by diffusing sunlight that has not contributed to primary power generation and escaped through the space unit, a double-layered solar cell is designed to increase power generation efficiency compared to the installation area through minimization of solar power loss. A module is disclosed.

However, the above prior patent 1 has the advantage of being able to utilize sunlight that did not contribute to the first power generation in the second power generation unit, but since both the first and second power generation units have a cross-sectional structure facing the direction of solar light incidence, the bottom of the second power generation unit It had a structural problem of not being able to efficiently utilize the reflected light of the reflector installed on it.

In addition, Patent No. 10-1781265 (Prior Patent No. 2) exemplifies a stacked photovoltaic power generation system. A panel housing having a plurality of panel installation grooves on the left and right sides of a hexahedron shape and having reflectors installed on the bottom and side surfaces and the panel housing thereof Disclosed is a system that obtains a lot of electricity in a small area through a plurality of solar panels by combining a condensing housing with a condensing lens and a diffusion lens installed at the upper end of the condensing housing.

However, the prior patent 2 above has a structure in which a plurality of condensing lenses and diffusion lenses are used in the condensing housing, so the manufacturing cost is inevitably increased, and since there is no separate diffusion member between the solar cell panels, the light provided through the condensing housing is sunlight. It had a structural limitation that the expected energy conversion efficiency could not be obtained in that it was incident only horizontally to the battery panel surface.

In addition, Patent No. 10-1346087 (Prior Patent 3) exemplifies a vertical photovoltaic device that produces electric energy by light by arranging solar cells vertically on the ground. Disclosed is a technology capable of increasing energy conversion efficiency by expanding the power generation area of the solar cell while reducing the space occupied by a power generation device by arranging solar cells spaced apart from each other and disposing a light guide plate between the solar cells.

However, the above Prior Patent 3 has a structure in which the solar cell and the light guide plate are individually assembled inside the case, so the assembly process is complicated, and the optical path from the light guide plate is designed on the premise of a single-sided solar cell (Monofacial Cell). There was still an insufficient part in obtaining the level of energy conversion efficiency.

(Prior Patent Document 1) Registered Patent No. 10-1707716 (Prior Patent Document 2) Registered Patent No. 10-1781265 (Prior Patent Document 3) Registered Patent No. 10-1346087

The present invention has been made in view of the problems of the above background art,

An object of the present invention is to provide a solar cell enclosure capable of easily assembling a plurality of solar cell panels and a light guide plate in a box-type enclosure whose inner wall is made of a reflector, and capable of obtaining high power generation efficiency compared to the occupied area by using sunlight or illumination light. there is.

Another object of the present invention is to provide a solar cell enclosure capable of facilitating maintenance of the solar cell enclosure, reducing manufacturing costs, and obtaining an appropriate level of photoelectric conversion efficiency even when using a solar cell without a texture structure. is in providing

Another object of the present invention is to provide a method of generating electric energy by inducing light sources such as indoor lighting, street lighting, and sunlight incident on a vehicle to a solar cell enclosure as part of an energy harvesting technology.

A multi-panel solar cell enclosure according to a preferred embodiment of the present invention is configured by combining an upper unit (A) and a lower unit (B), and the upper unit (A) is spaced apart from the top plate 5 made of a transparent reinforcing material at regular intervals. A plurality of light guide panels (4) arranged in a manner are integrally manufactured, the lower unit (B) has an outer wall (1), a reflective layer (2) is formed inside the outer wall (1), and the lower unit (B) It is characterized in that a plurality of double-sided solar cell panels 3 are vertically installed at regular intervals inside the, and the light guide panel 4 is coupled so as to be inserted between the solar cell panels 3.

In addition, the light-transmitting material for manufacturing the top plate in the present invention is characterized in that any one of EVA or PMMA.

In addition, the inside of the top plate 5 included in the upper unit (A) of the present invention is characterized by further comprising a condensing pattern 6 for condensing incident light or a diffuse reflection pattern 8 for causing diffuse reflection. .

In addition, an LED light 7 is installed inside the top plate 5 included in the upper unit (A) of the present invention, and the bottom surface of the lower unit (B) is made of a light-transmitting material to utilize both the lighting function and the power generation function at the same time. It is characterized in that it is configured to be able to.

In addition, the outer wall (1) constituting the lower unit (B) of the present invention is characterized in that a heat radiation fin is formed to reduce the effect of temperature on power generation efficiency.

In addition, a method for obtaining electric energy using a multi-panel solar cell enclosure according to a preferred embodiment of the present invention includes the steps of setting a place where the enclosure can receive sunlight during the day and receive illumination light at night; Installing the enclosure at the place set in the step, generating electrical energy through the enclosure by sunlight during the daytime and lighting at night through the enclosure, generating the electrical energy produced in the above step to the storage battery characterized in that it includes the step of storing.

In addition, the method for obtaining electrical energy of the present invention is characterized in that electrical energy is obtained by inducing a street light installed outdoors or a lighting lamp installed indoors into a multi-panel solar cell enclosure.

In addition, the method of obtaining electric energy of the present invention determines the installation location based on the structure of the electric vehicle, and preferably considers the roof of the electric vehicle first. characterized by

According to the present invention, it is possible to easily assemble a plurality of solar cell panels and a light guide plate in a box-shaped enclosure whose inner wall is made of a reflector, and has an effect of obtaining high power generation efficiency compared to the occupied area by using sunlight or illumination light.

In addition, the solar cell enclosure can be easily managed, and an appropriate level of energy conversion efficiency can be obtained even when using a solar cell in which texturing treatment or an antireflection film (ARC) is intentionally excluded.

1 (a), (b), (c), and (d) are exemplary diagrams to aid understanding of terms used in the present invention.
Figure 2 (a), (b), (c) is an exemplary view for explaining the structure of the conventional large panel type solar cell enclosure.
Figure 3 (a), (b) is an exemplary view showing an upper assembly (A) and a lower assembly (B) constituting the multi-panel solar cell enclosure of the present invention, respectively.
4 is a configuration diagram for explaining an assembled state of the solar cell enclosure of the present invention.
5, 6 and 7 are exemplary views for explaining a modified example of the upper assembly of the present invention.
8 is an exemplary view for explaining a modified example of the solar cell enclosure structure of the present invention.
9 is an exemplary view for explaining a method of producing electrical energy using the solar cell enclosure of the present invention.

Hereinafter, a multi-panel solar cell enclosure and a power generation method using the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, in the description of the present invention, if it is determined that a detailed description of a known configuration or function may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. And the technical terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention, and the technical terms used in the present invention are not specifically defined in the present invention in a different meaning, It is natural to interpret it in a meaning generally understood by those skilled in the art to which the present invention belongs, but it should not be interpreted in an excessively comprehensive or excessively reduced meaning.

Among the terms used in the present invention, 'solar cell' means a basic unit constituting a solar cell, and as shown in FIG. 1 (a), a module is formed by combining a plurality of cells. The meaning of the terms cell, module, and panel should be interpreted from the fact that a panel is made by combining a plurality of modules. And, as shown in FIG. 1(b), the 'solar cell' is made of a semiconductor P-N junction and is composed of a texture and an antireflection layer (ARC) on the front surface and a reflective layer (RC) on the rear surface based on the sunlight incident surface. It should be understood that the technical meaning is included in the structure.

In addition, the 'mono-facial panel' and the 'bi-facial panel', as shown in (c) and (d) of FIG. 1, use only the front incident light or the front and rear incident light. It should be understood that the panel is referred to as a 'single-sided type' or a 'double-sided type' depending on whether it is used for power generation.

2 shows a conventional multi-panel solar cell enclosure. 2(a) shows that the first development panel unit 21 and the second development panel unit 22 are stacked, and the light passing through without being absorbed by the first development panel unit 21 is diffused to the second development panel unit. It is further generated in (22), and FIG. 2 (b) combines the panel housing 200 accommodating a plurality of solar cell panels 600 with a concentrating housing 300 having a plurality of condensing lenses 500. 2(c) shows that the light guide plate 300 is installed between the solar cell panels 200 spaced apart at predetermined intervals in the case 100 It is characterized by increasing the energy conversion efficiency by expanding the incident area of sunlight by inserting it.

However, although the panel enclosures of FIG. 2 have a common purpose of increasing energy conversion efficiency by utilizing incident light and reflected light, the prior art of FIG. 2 inevitably increases manufacturing cost due to structural complexity, and many It requires time and effort, such as disassembling or assembling parts of the system, and has practical limitations in that it is difficult to secure enough design freedom to respond to various surrounding environments and light sources in a customized way.

Therefore, in order to overcome the above practical limitations, the present invention utilizes the conventional solar cell panel enclosure structure as much as possible, further simplifies the structure, facilitates disassembly and assembly, and multi-panel solar cells that can be customized and applied to various environments. It is to propose a hull and a power generation method using it.

Figure 3 illustrates the main configuration of a multi-panel solar cell enclosure according to a preferred embodiment of the present invention, (a) shows the structure of the upper unit (A), (b) shows the structure of the lower unit (B) is showing

First, the upper unit (A) of FIG. 3 (a) includes a top plate 5 and a light guide panel 4 made of a transparent reinforcing material, and the top plate 5 and the light guide panel 4 are integrally manufactured through injection molding. there is. In FIG. 3(a), a structure in which five light guide panels 4 are installed vertically downward is exemplified, but the number of light guide panels 4 is not limited thereto, and depending on the size of the solar cell enclosure or usage environment, The number can be changed at any time. At this time, since the upper plate 5 of the transparent reinforcing material acts as a light guide passage for receiving and guiding light from a light source, EVA (ethylene-vinyl acetate copolymer) or PMMA, which has excellent light guiding properties and has advantages in transparency, light resistance, mechanical strength and moldability, (Polymethyl methacrylate) is preferably made of any one material.

And the lower unit (B) of FIG. 3 (b) is a double-sided solar cell panel (3) installed vertically at regular intervals in the outer wall (1) of the enclosure having a reflective layer (2) on the inner surface and the internal space of the enclosure It consists of At this time, although not shown in FIG. 3 (b), it should be seen that a junction box electrically connected to external devices such as a battery and a charging control circuit is naturally provided, and such a junction box can use well-known technologies. In , the detailed description is omitted. Even here, the number of double-sided solar cell panels 3 is shown as 4, but the number of panels is not limited to 4 and can be changed as much as possible corresponding to the size of the solar cell enclosure or the structure of the upper unit A.

Figure 4 shows the process of combining the upper unit (A) and the lower unit (B) of the present invention by way of example. In the lower unit (B), double-sided solar cell panels (3) are vertically installed at regular intervals, and the light guide panel (4) of the upper unit (A) is inserted (installed so as to be inserted) between the spaced spaces to create a geometrically Although the case has a closed structure, since the top plate 5 is made of a transparent reinforcing material, the top plate 5 is optically open so that light can enter the inside. In this way, when light such as sunlight or lighting is supplied through the upper plate 5 to the completed enclosure by combining the upper and lower units A and B, the light passes through the light guide panel 4 and double-sided solar cell panel. Electrical energy can be produced by being incident on (3). Since the reflective layer 2 made of a mirror or a reflective film is provided on the inside of the outer wall 1 of the enclosure, the light that is not absorbed by the solar cell panel 3 is reflected in the reflective layer ( 2), since it is reflected by the solar cell panel 3 and re-incident, it will have the advantage of increasing the energy conversion efficiency by using the re-incident light.

In addition, in order to reduce the surface reflection of a solar cell, it is common to texturize the surface of the cell and to coat the antireflection film (ARC). In the combined structure as shown in FIG. 4, all inner walls of the lower unit (B) have a reflective layer 2) is provided so that the reflected light can be sufficiently recycled, so it is possible to use a solar cell having a structure in which texturing treatment on the cell surface or formation of an antireflection film (ARC) is intentionally excluded, thereby reducing the manufacturing cost of the solar cell. It can be expected to reduce the power generation cost.

Figure 5 shows an embodiment in which the shape of the upper unit (A) is changed to a structure suitable for producing electric energy by incident sunlight or street lighting light into the solar cell enclosure of the present invention. In the upper unit (A) of FIG. 5, the structure of the upper plate (5) is manufactured so that the light condensing pattern (6) is provided therein so that incident light is focused by the condensing pattern (6) and more light is transmitted to the light guide panel (4). It can be induced, and as a result, more focused light is supplied to the solar cell panel 3, and the effect of increasing energy conversion efficiency can be expected.

Figure 6 shows another embodiment in which the structure of the upper unit (A) and the lower unit (B) is changed so that the lighting function and the power generation function can be utilized at the same time. The upper unit (A) in FIG. 6 is a solar cell enclosure, configured to supply self-illuminated light by LED, and the lower surface of the lower unit (B) is made of a light-transparent material to utilize the light transmitted through the lower surface as indoor lighting. And, the illumination light induced by the light guide panel 4 is incident on the solar cell panel 3 to obtain electric energy. According to the structure of FIG. 6, it is possible to secure emergency power through lighting light, which is inevitable to be used in outdoor activities such as camping or in areas where commercial power is not supplied, thereby preventing the worst situation such as communication loss even in emergency situations. Since power generation is possible using indoor lighting that is virtually discarded except for the lighting function, it will have the advantage of being able to use the power as a driving power for various sensors or control devices that can be operated with a small power. Of course, at this time, it will stop at acquiring small-scale energy that is less than the power input to drive the LED light, but rather than simply discarding light energy for lighting purposes as it is, using the generated power by recycling even a part of the energy of the lighting light is compact and low-consumption. Its significance as an energy harvesting technology in the era of the 4th industrial revolution, when electrification is the trend, cannot be underestimated.

And FIG. 7 shows another modified embodiment of the upper unit (A) in which the diffuse reflection pattern (8) is formed on the top plate (5). According to the configuration of FIG. 7, when the sunlight induced into the building through a conventional natural lighting technique or the focused light supplied through a special light collecting means is incident on the side of the top plate 5, diffuse reflection provided in the top plate 5 An effect of easily inducing diffused reflected light generated by the pattern 8 to the light guide panel 4 can be expected.

Meanwhile, FIG. 8 shows an embodiment in which a decrease in photoelectric efficiency due to an increase in temperature is prevented by installing heat dissipation fins on an outer wall of a solar cell enclosure in consideration of temperature characteristics of a solar cell. In general, it is known that the photoelectric conversion efficiency of solar cells drops sharply when the temperature exceeds 25℃. However, if a heat radiation fin is installed on the outer wall of the enclosure, the light energy is converted into heat and the internal temperature of the enclosure, which must rise, can be cooled to some extent. will have the effect of preventing a rapid drop in energy conversion efficiency.

9 (a) and (b) exemplarily show a method of obtaining electrical energy using the multi-panel solar cell enclosure of the present invention.

Figure 9 (a) illustrates a method of power generation using street light lighting. Street lights are typically installed on roadsides or parks and can be referred to as light sources specialized only for lighting functions in that they continue to illuminate the surroundings at night. If the energy harvesting technology through the solar cell enclosure of the present invention is applied using such a lighting source, even if it is not a large amount of power, it will have the advantage of obtaining electrical energy through discarded lighting light and using it as a power source suitable for the purpose. . In particular, as shown in FIG. 9 (a), electricity generation using the illumination light of a street light is performed by installing the solar cell enclosure of the present invention in a parking space near a street light in consideration of the characteristics of a street light that is turned on for at least 8 hours at night to charge the battery of an electric vehicle. It will have the advantage of being able to utilize it as part of the power supply for On the other hand, if the light emitting structure of the street light is designed so that the light source for lighting function and the light guide panel 4 for power generation function are provided together as shown in FIG. will contribute to raising

In addition, as shown in FIG. 9 (b), it would be desirable to mount the solar cell enclosure of the present invention on the roof of a car to generate power by sunlight during the day and to generate power by lighting street lights at night. In this case, it would be efficient to configure the charging system of the battery to be dualized so that the main battery or the auxiliary battery can be selectively charged according to the situation.

According to the present invention, it is possible to easily assemble a plurality of solar cell panels and a light guide plate in a box-type housing whose inner wall is made of a reflector, and can obtain high power generation efficiency compared to the occupied area by using sunlight or illumination light, and texturing the surface of the solar cell. Even if a solar cell intentionally excluded from texturing treatment or formation of an antireflection film (ARC) is used, the effect of reducing manufacturing cost and power generation cost can be expected in that the light reflected by the reflector can be recycled.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and anyone skilled in the art can make various modifications without departing from the gist of the present invention. It will be possible. However, it should be noted that whether or not to deviate from the gist of the present invention is determined solely by the description of the claims.

Reference Numerals 1: enclosure outer wall 2: reflective layer
3: double-sided solar cell panel 4: light guide panel
5: transparent reinforcing material top plate 6: light collecting pattern
7: LED lighting unit 8: diffuse reflection pattern
A: upper unit B: lower unit

Claims (10)

In the multi-panel solar cell enclosure obtained electrical energy using sunlight or illumination light,
The enclosure is configured by combining the upper unit (A) and the lower unit (B),
The upper unit (A) is manufactured by integrating a top plate (5) made of a transparent reinforcing material and a plurality of light guide panels (4) arranged at regular intervals,
The lower unit (B) has an outer wall (1) and a reflective layer (2) is formed inside the outer wall (1), and a plurality of double-sided solar cell panels ( 3) is installed vertically,
Multi-panel solar cell enclosure, characterized in that the light guide panel (4) of the upper unit (A) is coupled to be installed between the solar cell panels (3) of the lower unit (B) According to claim 1,
The transparent reinforcing material is a multi-panel solar cell enclosure, characterized in that any one of EVA or PMMA According to claim 1,
A multi-panel type solar cell enclosure characterized in that a light collecting pattern 6 for condensing incident light is further provided inside the top plate 5 of the upper unit (A). According to claim 1,
An LED lighting lamp 7 is installed inside the upper plate 5 of the upper unit A, and the lower surface of the lower unit B is made of a light-transmitting material so that the lighting function and the power generation function can be utilized at the same time. Multi-panel solar cell enclosure According to claim 1,
A multi-panel type solar cell enclosure characterized in that a diffuse reflection pattern 8 is further provided inside the top plate 5 of the upper unit A to cause diffuse reflection when light collected through the light collecting means is incident According to any one of claims 1 to 3,
A multi-panel solar cell enclosure characterized in that a heat radiation fin is formed on the outer wall (1) of the lower unit (B) In the method of obtaining electrical energy using the multi-panel solar cell enclosure of any one of claims 1 to 3,
Setting a place where the enclosure can receive sunlight during the day and receive illumination light at night;
Installing the enclosure at the place set in the step;
Producing electrical energy by sunlight during the daytime through the enclosure and producing electrical energy through illumination light at night;
A power generation method using a multi-panel solar cell enclosure, characterized in that it comprises the step of storing the electrical energy produced in the above step in a storage battery. According to claim 7,
The lighting light is a power generation method using a multi-panel solar cell enclosure, characterized in that the street lamp installed outdoors or the lighting lamp installed indoors According to claim 7,
The step of determining the installation location of the enclosure is a power generation method using a multi-panel solar cell enclosure, characterized in that the optimal installation location is determined based on the location of the light source of the lighting equipment and the external structure of the electric vehicle According to claim 9,
The external structure of the electric vehicle considered in the step of determining the installation location of the enclosure is a power generation method using a multi-panel solar cell enclosure, characterized in that the roof of the vehicle is given the highest priority

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