KR102322801B1 - Photovoltaic power generation device for farming - Google Patents

Abstract

According to an embodiment of the present invention, there is provided an agricultural solar power generation device that supplies light and water by using a lens and a rainwater passage groove to a shade zone generated by a solar panel with a simple structure.
Agricultural photovoltaic generator, a support extending from the ground, a fixed frame coupled to the end of the support, a plurality of solar panels fixed to the fixed frame and arranged on the same plane to receive sunlight to produce electricity, between the solar panels At least one first lens interposed therebetween to transmit light, and at least one second lens disposed along the outer edge of the solar panel to transmit light.

Description

Agricultural solar power generation device {Photovoltaic power generation device for farming}

The present invention relates to an agricultural photovoltaic power generation device, and more particularly, to an agricultural photovoltaic power generating device capable of reducing a decrease in the yield of crops by reducing a shade zone generated by a solar panel.

Electrical energy is an essential energy for our lives and can be obtained through various methods such as mechanical energy, thermal energy, or light energy.

Thermal power generation is the most commonly used method to obtain electrical energy, and thermal power generation is widely used because it has the advantage of being able to produce a large amount of electrical energy when needed. However, thermal power generation has a problem of generating a large amount of air pollutants by burning fossil fuels. In order to solve these problems, the demand for renewable energy is increasing.

In particular, solar power generation is attracting attention as a representative renewable energy. However, there is a problem that solar power generation requires a large site, and a new environmental problem is occurring because of the problem that plants cannot live under the solar panel.

Accordingly, research is being actively conducted on a method for obtaining electrical energy without completely blocking sunlight supplied to plants. In particular, it is necessary to develop a method for obtaining electric energy by using the remaining sunlight while providing sufficient sunlight to harvest crops by utilizing agricultural land occupying a large portion of the country.

Republic of Korea Patent Publication No. 10-2038530 (2019. 10. 24)

The technical problem to be achieved by the present invention is to solve this problem, and to provide an agricultural solar power generator capable of reducing the reduction in the yield of crops by reducing the shade zone generated by the solar panel.

The technical problems of the present invention are not limited to the above-mentioned problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Agricultural solar power generation device according to the present invention, a support extending from the ground, a fixed frame coupled to the end of the support, is fixed to the fixed frame and arranged on the same plane to receive sunlight to produce electricity A farming type comprising a plurality of solar panels, at least one second lens interposed between the solar panels to transmit light, and at least one second lens disposed along an outer edge of the solar panel to transmit light Includes solar power generation devices.

The first lens and the second lens may be a bar-shaped concave lens that transmits and diffuses sunlight.

The first lens may be a concave lens in which a central portion is thinner than both sides, and the second lens may be a concave lens in which an adjacent side of the solar panel is formed thicker than the other side portion.

The first lens may be a concave lens that is arranged in a horizontal direction between the solar panels, and is formed so that one side of the first lens and a side adjacent to the solar panel are thicker than the other side.

The first lens may be protruded or recessed than the solar panel with the rainwater passage groove as a boundary to form a step.

The first lens may be formed to protrude from the solar panel, and may further include an overflow prevention protrusion that protrudes toward the rainwater passage groove to prevent rainwater from overflowing.

The agricultural solar power generation device may further include a reflective sheet attached to a lower portion of the solar panel to re-reflect light reflected to the rear surface of the solar panel.

Agricultural solar power generation device according to the present invention, it is possible to produce electricity at the same time as cultivation, there is an advantage in that it is possible to obtain electrical energy while minimizing the decrease in crops due to the reduction of sunlight.

In particular, it is possible to solve the problem that crops could hardly grow in a specific part by minimizing the dark zone that is inevitably caused by the solar panel, and it is possible to obtain a uniform yield throughout the arable land.

In addition, by preventing rainwater from being blocked by the solar panel, rainwater is sufficiently supplied to the area just below the solar panel, thereby enabling crops to grow sufficiently well under the solar panel.

1 is a perspective view of an agricultural solar power generation device according to an embodiment of the present invention.
^{FIG. 2 is a 'AA ' cross-} sectional view of the agricultural solar power generation device of FIG. 1 .
3 to 5 are diagrams for explaining an operation process of the agricultural photovoltaic device of FIG. 1 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, with reference to FIGS. 1 to 5, an agricultural photovoltaic device according to an embodiment of the present invention will be described in detail.

1 is a perspective view of an agricultural solar power generation device according to an embodiment of the present invention, and FIG. 2 is an AA ^{' cross-} sectional view of the agricultural solar power generation device of FIG. 1 .

1 and 2, the agricultural solar power generation device 1 according to the embodiment of the present invention is installed in the farmland where crops are produced, and does not partially completely block the sunlight required for the production of crops without partially blocking electrical energy A device capable of producing a solar panel 100, a first lens 201 interposed between the solar panel 100, a second lens 202 disposed along the outer edge of the solar panel, and a first lens The overflow prevention protrusion 203 attached to the protrusion 205 of the 201, at least one rainwater passage groove 204 interposed between the first lens 201 and the solar panel 100, and the solar panel 100 ) It includes a reflective sheet 500 attached to the rear, a fixed frame 400 for fixing the solar panel 100 and the lens unit 200, and a support 300 for connecting the fixed frame and the ground.

In this embodiment, the support 300 is installed on the ground, and the fixed frame 400 is installed at an end of the support 300 . A plurality of solar panels 100 are arranged on the same plane in the fixed frame 400 . A lens unit 200 is installed between the solar panels 100 . The lens unit 200 is composed of a concave lens. A rainwater passage groove 204 is formed between the lens unit 200 and the solar panel 100 . A reflective sheet 500 is attached to the rear surface of the solar panel 100 .

The support 300 functions to position the upper end 250 of the agricultural type photovoltaic device 1 at a predetermined height. The support 300 is installed on the ground, and the fixed frame 400 is connected to an end thereof. A solar panel 100 , a lens unit 200 , and a reflective sheet 500 are connected to the fixed frame 400 . At this time, the ground refers to the surface on which the support 300 can be fixed, and in the present specification, it refers to a paddy field, a field, or an external floor surface of a plastic house where crops are grown. In addition, the support 300 may be formed in the form of one pillar, or may be formed in the form of a frame composed of a plurality of pillars.

A plurality of solar panels 100 are arranged in the fixed frame 400 installed at the end of the support 300 . The solar panel 100 functions to convert light energy into electrical energy, and a plurality of solar panels 100 are arranged on the same plane. A reflective sheet 500 is attached to the rear surface of each solar panel 100 . A first lens 201 is interposed between the solar panels 100 , and a second lens 202 is coupled to the outer surface thereof.

The lens unit 200 is in contact with the solar panel 100 , and functions to pass and refract light coming to areas other than the solar panel 100 . The lens unit 200 includes a first lens 201 and a second lens 202 .

The first lens 201 passes light incident between the solar panels 100 and serves to supply light to a shaded area covered by the solar panel 100 , and the second lens 202 is the solar panel 100 . It also serves to supply light to the shaded area by passing the light incident through the outer edge.

The first lens 201 and the second lens 202 may be formed in the form of a concave lens so that the incident light is widely diffused to divide and illuminate the shaded area. That is, the first lens 201 and the second lens 202 may be formed in the form of a bar-type concave lens formed along the solar panel 100 .

The first lens 201 may be formed of a concave lens in which the thickness of the central portion is thinner than that of both sides in order to widely diffuse the light incident between the solar panels 100 . Accordingly, the light incident on the first lens 201 may be refracted to both sides of the first lens 201 to diffuse the light in a wide band shape.

Meanwhile, the second lens 202 may be formed in the form of a concave lens in which the thickness of the surface in contact with the solar panel 100 is thicker than the thickness of the outer surface. Accordingly, the second lens 202 refracts the incident light toward the solar panel 100 . That is, the second lens 202 prevents the incident light from leaking out of the solar panel 100 and is refracted toward the solar panel 100 so that it is supplied only to the shaded area. In this way, the first lens 201 and the second lens 202 supply light only to the portion covered by the solar panel 100 to help the growth of crops covered by the solar panel 100 .

A rainwater passage groove 204 through which rainwater passes is formed between the first lens 201 and the solar panel 100 .

The rainwater passage groove 204 serves to let rainwater falling into the solar panel 100 through a gap between the first lens 201 and the solar panel 100 fall in the middle. The rainwater passage groove 204 is covered by the solar panel 100 to reduce the area where rainwater does not fall so that crops can grow well. The rainwater passage groove 204 may be formed on the upper side or the lower side of the first lens 201 .

The rainwater passage groove 204 is formed long in the horizontal direction between the first lens and the solar panel 100 . The rainwater passage groove 204 allows rainwater (refer to C of FIG. 4) to move from the upper surface of the agricultural solar power generation device 1 to the lower surface. When the flow rate of rainwater (refer to C of FIG. 4) is high or the flow rate is high, the overflow prevention protrusion 203 and the protrusion 205 are controlled.

The overflow prevention protrusion 203 is located on the upper portion of the rainwater passage groove 204 to prevent rainwater from overflowing, so that rainwater can fall through the rainwater passage groove 204 as much as possible. The overflow prevention protrusion 203 may have a structure in which one end of the first lens 201 protrudes. However, the overflow prevention protrusion 203 is not limited to a configuration in which the first lens 201 protrudes separately, and the first lens 201 itself protrudes from the solar panel 100 to form the overflow prevention protrusion 203 structure. can be achieved That is, when the first lens 201 protrudes or indents than the solar panel 100 with the rainwater passage groove 204 as a boundary to form a step, the edge portion of the first lens 201 or the solar panel 100 overflows. It becomes possible to function as an anti-protrusion structure.

Hereinafter, with reference to FIGS. 3 to 5, the operation process of the agricultural solar power generation device will be described in more detail. 3 to 5 are diagrams for explaining an operation process of the agricultural solar power generation device of FIG. 1 , and FIG. 3 is a diagram conceptually illustrating a refraction process of the lens unit.

Referring to FIG. 3 , since the solar panel 100 is always installed to face the sun, a shade zone A ₁ that sunlight does not reach occurs on the back side of the solar panel 100 . In particular, sunlight (B) has a property of going straight, and the solar panel 100 absorbs the sunlight (B), and the sunlight (B) incident on the solar panel 100 does not reach the back side of the solar panel 100 . As a result, a shadow band (A ₁ ) is inevitably generated.

As shown in FIG. 3 , sunlight B incident on the first lens 201 between the solar panels 100 passes through _{the shade band A 1 present on the back side of the solar panel 100 .} At this time, since the edge of the first lens 201 is thicker than the central portion, the light is diffused by passing the sunlight B and refracting the sunlight B to both sides of the first lens 201 at the same time. The sunlight B passing through the first lens 201 is diffused while the light is refracted to form _{a light zone A 2 by the first lens.}

In addition, since the surface of the second lens 202 in contact with the solar panel 100 is thicker than the surface exposed to the outside, the second lens 202 refracts sunlight B in the direction of the solar panel 100 . That is, the second lens 202 refracts sunlight B toward the central portion of the agricultural photovoltaic device 1 to form _{light zones A 3 and} A ₃ ^{′ by the second lens.} _{The light area A 2} by the first lens and the light area _{A 3 and} A ₃ ^' by the second lens are formed above the shadow band A _{1 .} That is, a shade for (A ₁₎ by hatching for (A ₁₎ over the formed first lens light zone (A ₂₎ and light areas (A _3, A ₃ ^') of the second lens of the sunlight (B) this is transmitted In this way, sunlight (B) is supplied to the crops present in the _{shade zone (A 1 ).} Accordingly, crops can be grown even in the shade zone A _{1 .} On the other hand, depending on the angle of the sunlight (B), the shade band (A ₁ ), the light zone (A ₂ ) by the first lens, and the light zone (A _3, A ₃ ^' ) by the second lens are variable, respectively.

Hereinafter, with reference to FIG. 4, the rainwater passage groove of the agricultural type solar power generation device will be described in more detail.

4 is a diagram conceptually illustrating a process in which rainwater falls from a rainwater passage groove.

2 and 4 , the rainwater passage groove 204 is interposed between the first lens 201 and the solar panel 100 . The rainwater passage groove 204 functions to deliver the rainwater (C) to the ground where the rainwater (C) cannot reach by the agricultural photovoltaic device (1). Rainwater C flows along the surface of the solar panel 100 and falls into the rainwater passage groove 204 . The protrusion 205 functions to control the rainwater (C) when the flow rate of the rainwater (C) is fast. Rainwater C with a high flow rate flows along the surface of the solar panel 100 and enters the rainwater passage groove 204 after stopping at the protrusion 205 . An overflow prevention protrusion 203 is present at the upper end of the rainwater passage groove 204 . The overflow prevention protrusion 203 functions when the flow rate of rainwater (C) is large. When the flow rate of rainwater (C) is large, the rainwater passage groove 204 overflows, the overflow prevention protrusion 203 blocks the upper end of the rainwater passage groove 204 to prevent overflow.

Hereinafter, with reference to FIG. 5, the reflective sheet of the agricultural solar power generation device will be described in more detail.

5 is a diagram conceptually illustrating a process in which the reflective sheet 500 reflects light.

5 and 2, the reflective sheet 500 is attached to the rear surface of the solar panel 100 to reflect sunlight (B). Some of the sunlight (B) is reflected back after reaching the crop (D) or water (E). The sunlight (B) reflected from the crop (D) or water (E) reaches the reflective sheet 500 on the rear side of the agricultural photovoltaic device 1, and the reflective sheet 500 is from the crop (D). The reflected sunlight (B) is reflected back to the crop (D). That is, the reflective sheet 500 functions to send the light reflected from the crop (D) back to the crop (D). If you look at rice, which is a representative crop (D), water (E) is stagnant in the agricultural land. Since water (E) reflects more sunlight (B), the effect of the reflective sheet 500 is greater. In addition, when the agricultural solar power generation device (1) is installed on the plastic house, the light reflected through the plastic house is reflected back and sent to the crops. The arrangement and shape of the reflective sheet 500 may be variously modified, and the position may also be attached to the rear surface of the fixed frame 400 .

Although embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Agricultural solar power generation device 100: Solar panel
200: lens unit 201: first lens
202: second lens 203: overflow prevention projection
204: rainwater passage groove 205: protrusion
250: upper part 300: support
400: fixed frame 500: reflective sheet
A ₁ : Shadow zone A ₂ : Light area by the first lens
A ₃ : Light area by the second lens A ₃ ^' : Light area by the second lens B: Sunlight C: Rainwater D: Crops E: Water

Claims (7)

supports extending from the ground;
a fixed frame coupled to an end of the support;
a plurality of solar panels fixed to the fixed frame and arranged on the same plane to receive sunlight and generate electricity;
at least one first lens interposed between the solar panels to transmit light; and
and at least one second lens disposed along the outer edge of the solar panel to transmit light,
The first lens is arranged in a horizontal direction between the solar panels,
A rainwater passage groove through which rainwater passes is formed between one side of the first lens and the solar panel,
The first lens is an agricultural solar power generation device that protrudes or is recessed than the solar panel with the rainwater passage groove as a boundary to form a step. According to claim 1,
The first lens and the second lens are bar-shaped concave lenses for transmitting and diffusing sunlight. 3. The method of claim 2,
The first lens is a concave lens in which the thickness of the central portion is thinner than both sides, and the second lens is a concave lens in which the side adjacent to the solar panel is thicker than the other side. delete delete supports extending from the ground;
a fixed frame coupled to an end of the support;
a plurality of solar panels fixed to the fixed frame and arranged on the same plane to receive sunlight and generate electricity;
at least one first lens interposed between the solar panels to transmit light; and
and at least one second lens disposed along the outer edge of the solar panel to transmit light,
The first lens is arranged in a horizontal direction between the solar panels,
A rainwater passage groove through which rainwater passes is formed between one side of the first lens and the solar panel,
The first lens protrudes or is recessed from the solar panel with the rainwater passage groove as a boundary to form a step,
The first lens is formed to protrude from the solar panel, and protrudes toward the rainwater passage groove to further include an overflow prevention protrusion for preventing rainwater from overflowing. According to claim 1,
Agricultural solar power generation device further comprising a reflective sheet attached to the lower portion of the solar panel to re-reflect the light reflected to the back of the solar panel.

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