KR20220042540A - Air natural circulation cooling device and solar power generation device equipped with the same - Google Patents

Abstract

The present invention relates to a cooling device with a natural air circulation method that can minimize a temperature rise of a solar panel. The cooling device comprises a slit plate disposed to be spaced apart from the rear surface of the solar panel. In addition, the present invention relates to a solar power generating device having a natural air circulation cooling function that can minimize a temperature rise of the solar panel. The solar power generating device comprises: a solar panel; and a cooling device disposed on the rear surface of the solar panel. The cooling device includes a slit plate disposed to be spaced apart from the rear surface of the solar panel.

Description

Air natural circulation cooling device and solar power generation device equipped with the same

The present invention relates to a photovoltaic device, and more particularly, to an air natural circulation cooling device capable of improving electrical energy generation efficiency, and a photovoltaic device having the same.

Photovoltaic power generation is a power generation method that converts sunlight into direct current electricity to produce electric power, and photovoltaic power generation generates electric power using a photovoltaic power panel to which several solar cells are attached. The characteristics of solar power generation are semi-permanent, easy maintenance by using a panel composed of solar cells, and a non-polluting and limitless solar energy source.

However, as the temperature of the light collecting plate that receives sunlight directly and converts it into electric energy increases when sunlight is incident on the solar panel, there is a problem in that the electric energy generation efficiency of the photovoltaic device is gradually reduced.

Korean Patent Publication No. 10-2019-0092079 (published on August 7, 2019)

An object of the present invention is to provide a cooling device of a natural air circulation method capable of minimizing the temperature rise of a solar panel, and a solar power generation device having the same.

The cooling device of the natural air circulation method according to the present invention for achieving the above object includes a slit plate disposed spaced apart from the rear surface of the solar panel.

The slit plate has a curved cross section.

The slit plate has a cross section of the same shape as the upper surface of the airfoil.

the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And, the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel.

the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And, the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel.

In addition, a photovoltaic device having a natural air circulation cooling function according to the present invention for achieving the above object, a photovoltaic panel; and a cooling device disposed on a rear surface of the solar panel; The cooling device includes a slit plate spaced apart from the rear surface of the solar panel.

The slit plate has a curved cross section.

The slit plate has a cross section of the same shape as the upper surface of the airfoil.

the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And, the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel.

The cooling device includes at least two or more of the slit plates.

each of said plurality of slit plates comprising a first end and a second end opposite said first end; second ends of the first ends and second ends of the plurality of slit plates are disposed closer to the back surface of the solar panel; The distance between the first ends of adjacent slit plates is greater than the distance between the second ends of the adjacent slit plates.

One slit is defined between the rear surface of the solar panel and the uppermost slit plate or between the adjacent slit plates.

The uppermost slit plate is a slit plate disposed on the uppermost side of the rear surface of the solar panel among the plurality of slit plates.

The size of the slit gradually decreases as it approaches the rear surface of the solar panel.

The first end of each slit plate has a hook shape bent toward the slit plate below it.

The cooling device further includes a coupling device for coupling the slit plate to the solar panel.

The coupling device may include: a first support portion disposed on a first side edge of a rear surface of the solar panel; and a second support portion disposed on a second side edge of the solar panel to face the first support portion.

The slit plate is disposed between the first support part and the second support part.

A first side of the slit plate is coupled to the first support, and a second side of the slit plate is coupled to the second support.

The slit plate is rotatably coupled to the first support part and the second support part.

A first side of the slit plate is rotatably coupled to the first support, and a second side of the slit plate is rotatably coupled to the second support.

The cooling device of the natural air circulation method according to the present invention and the photovoltaic device having the same include a slit that is gradually narrowed. As the air moves at a high speed by the slit and comes into contact with the back surface of the solar panel, The temperature of the solar panel may be reduced more rapidly, and thus the efficiency of the solar panel may be increased.

In addition, the cooling device of the natural air circulation method and the photovoltaic device having the same can prevent the photovoltaic panel from overturning due to a headwind that enters toward the rear surface of the photovoltaic panel.

1 is a three-dimensional view of a photovoltaic device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line I-I' of FIG. 1 .
3 is a view showing an airfoil.
4 is a diagram for explaining the principle of the berunui.
5 is a view for explaining air circulation around the slit plate.
6 is a three-dimensional view of a photovoltaic device according to another embodiment of the present invention.

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 will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention. Like reference numerals refer to like elements throughout.

In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. Throughout the specification, like reference numerals are assigned to similar parts. When a part, such as a layer, film, region, plate, etc., is “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. Also, when a part of a layer, film, region, plate, etc. is said to be "under" another part, it includes not only the case where it is "directly under" another part, but also the case where there is another part in the middle. Conversely, when a part is said to be "just below" another part, it means that there is no other part in the middle.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between an element or components and other elements or components. The spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, when an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

In the present specification, when a part is said to be connected to another part, this includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. In addition, when it is said that a part includes a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

In this specification, terms such as first, second, third, etc. may be used to describe various components, but these components are not limited by the terms. The above terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, a first component may be referred to as a second or third component, and similarly, the second or third component may also be alternately named.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, the cooling device 200 according to the present invention and a photovoltaic device having the same will be described in detail with reference to FIGS. 1 to 6 .

1 is a three-dimensional view of a photovoltaic device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line I-I' in FIG. 1, FIG. 3 is a view showing an airfoil, and FIG. 4 is a view for explaining the principle of the berunui, and Figure 5 is a view for explaining the air circulation around the slit plate (40).

A photovoltaic device according to an embodiment of the present invention may include a photovoltaic panel 100 and a cooling device 200 as shown in FIGS. 1 and 2 .

The solar panel 100 receives sunlight to generate electricity. The solar panel 100 is disposed at an angle of about 21 to 23 degrees with respect to the ground. The solar panel 100 includes a plurality of cells. Each cell is a solar cell, and each cell receives sunlight to generate power. The plurality of cells may be disposed, for example, on the front surface 111 of the solar panel 100 . That is, when sunlight is incident on the front surface 111 of the solar panel 100 , the plurality of cells described above may be disposed on the front surface 111 . Meanwhile, the rear surface 112 of the solar panel 100 may be disposed opposite the front surface 111 to face the front surface 111 .

The cooling device 200 may be disposed on the rear surface 112 of the solar panel 100 .

The cooling device 200 may include at least one slit plate 40 defining a slit 300 and a coupling device 50 .

1 shows a cooling device 200 including a plurality of slit plates 40 as an example.

The plurality of slit plates 40 are disposed along the rear surface 112 of the solar panel 100 . For example, the plurality of slit plates 40 may be disposed along a direction from the upper edge of the solar panel 100 toward the lower edge of the solar panel 100 . Here, the upper edge and the lower edge of the solar panel 100 face each other. A lower edge of the upper and lower edges of the solar panel 100 is disposed closer to the ground. In this case, the slit plates 40 are disposed spaced apart from the rear surface 112 of the solar panel 100 by a predetermined distance. In other words, the slit plates 40 and the sun and the rear surface 112 of the panel 100 do not contact, and a space exists between the slit plates 40 and 112 .

Each slit plate 40 may extend along a direction from the first side edge of the solar panel 100 toward the second side edge.

As shown in FIG. 2 , each slit plate 40 may have a curved cross section. As a specific example, as shown in FIG. 3 , each slit plate 40 may have a cross-section having the same shape as an upper surface 500 of an airfoil or airfoil blade.

Each slit plate 40 has a first end E1 corresponding to a leading edge LE of the airfoil and a second end E2 corresponding to a trailing edge TE of the airfoil. may include Here, the second end E2 of the first and second ends E1 and E2 of each slit plate 40 is disposed closer to the rear surface 112 of the solar panel 100 .

The distance between the first ends E1 of the adjacent slit plates 40 is greater than the distance between the second ends E2 of the adjacent slit plates 40 .

Each slit plate 40 may define a slit 300 through which air passes. For example, one slit 300 may be defined between the rear surface 112 of the solar panel 100 and the uppermost slit plate 40 , and one slit 300 may be defined between adjacent slit plates 40 . (300) can be defined. Here, the uppermost slit plate 40 means a slit plate 40 disposed on the uppermost side of the rear surface 112 of the solar panel 100 among the plurality of slit plates 40 .

Air from the outside may be provided to the rear surface 112 of the solar panel 100 through the slit 300 . For example, air from the outside enters the slit 300 through the inlet of the slit 300 (eg, the opening between the first ends E1 provided in the adjacent slit plates 40). The solar panel enters and exits to the outside of the slit 300 through the outlet of the slit 300 (eg, the opening between the second ends E2 provided in the adjacent slit plates 40). (100) is in contact with the back surface (112). As the air discharged from the slit 300 is provided to the rear surface 112 of the solar panel 100 , the temperature of the solar panel 100 may be reduced.

Meanwhile, as shown in FIG. 2 , the size of the slit 300 may gradually decrease as it approaches the rear surface 112 of the solar panel 100 . In other words, in the direction from the first ends E1 of the adjacent slit plates 40 to the second ends E2 of the adjacent slit plates 40, the slit 300 has a size that gradually decreases. . Accordingly, the air provided from the outside and passing through the slit 300 has a low pressure and a high velocity.

That is, Bernoulli's principle that "the pressure decreases as the speed of the fluid increases" (see Fig. 4; in Fig. 4, P1 and P2 respectively represent pressure, V1 and V2 represent the flow rate, respectively, and ρ is the fluid according to the temperature) density), when air passes through the slit 300 having a size that is gradually smaller, the pressure of the air is lowered and the speed of the air is higher. In other words, as in the example shown in FIG. 5 , according to the Bernoulli principle described above, the moment the air around the inlet of the slit 300 passes through the inlet of the slit 300 , the pressure of the air gradually decreases while the air As the speed of the bar increases, the high speed air quickly flows downward on the rear surface 112 of the solar panel 100 . The air that flows in this way exits to the atmosphere through the slit 300 defined by the lowermost slit plate 40 . As such, as the air moves at a high speed by the slit 300 and comes into contact with the rear surface 112 of the solar panel 100, the temperature of the solar panel 100 may be decreased more rapidly, and accordingly, the sunlight The efficiency of the panel 100 may increase.

Meanwhile, as shown in FIG. 2 , the first end E1 of each slit plate 40 may have a hook shape bent toward the slit plate 40 disposed thereunder. Accordingly, the air that enters the inside of the slit 300 through the inlet of the slit 300 does not escape to the outside again through the inlet of the slit 300 . In other words, the hook-shaped first end E1 may serve as a screen to prevent the air entering the inside from flowing backward toward the inlet of the slit 300 . The air flowing into the slit 300 circulates while being trapped in the slit 300 and may be rapidly discharged through a narrow discharge throat of the slit 300 .

This air circulation phenomenon is continuously generated by a slight temperature change or gas flow around the slit plate 40, and in particular, as the temperature of the solar panel 100 increases, the ambient temperature difference increases, so that the natural air circulation flow will increase further. Under this influence, the temperature increase of the solar panel 100 may be maintained in an appropriate state or may be lowered by 2 to 3 degrees or more than the appropriate state.

In addition, the natural air circulation structure according to the present invention bends the direction of the wind to the narrow discharge throat of the slit 300 even when a reverse wind pressure acting toward the rear side of the solar panel 100 is generated due to a typhoon, etc. By letting it go out, it can also serve to prevent damage or lifting of the solar panel 100 .

The coupling device 50 may couple the slit plates 40 to the solar panel 100 . The coupling device 50 may include a first support part 51 and a second support part 52 . The first support part 51 may be disposed on the edge of the first side of the rear surface 112 of the solar panel 100 . The second support part 52 may be disposed on the second side edge of the solar panel 100 to face the first support part 51 .

The slit plates 40 may be disposed between the first support part 51 and the second support part 52 of the coupling device 50 . In this case, the first side of each slit plate 40 may be coupled to the first support part 51 , and the second side surface of each slit plate 40 may be coupled to the second support part 52 .

Meanwhile, the photovoltaic device of the present invention may further include an inverter, which converts direct current power generated from each cell of the photovoltaic panel 100 into alternating current power.

6 is a three-dimensional view of a photovoltaic device according to another embodiment of the present invention.

According to the photovoltaic device of FIG. 6 , a first side surface of each slit plate 40 is rotatably coupled to a first support part 51 , and a second side surface of each slit plate 40 is a second support part 52 . ) may be rotatably coupled to the To this end, a rotation shaft 600 penetrating the center of the slit plate 40 may be further provided, and the first end of the rotation shaft 600 is connected to the first support part 51, and the rotation shaft ( The second end of 600 may be connected to the second support 52 .

According to the structure of FIG. 6 , the angle of each slit plate 40 may be adjusted by the rotation shaft 600 . Accordingly, the size of the slit 300 may be appropriately adjusted, and accordingly, the speed of air passing through each slit 300 may also be adjusted for each slit.

Meanwhile, the remaining components of the photovoltaic device of FIG. 6 are the same as the corresponding components of the photovoltaic device of FIGS. 1 and 2 described above.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

100: solar panel 200: cooling device
300: slit 111: front
112: rear 50: coupling device
51: first support 52: second support
40: slit plate

Claims (12)

A cooling device of a natural air circulation method including a slit plate spaced apart from the rear surface of the solar panel. The method of claim 1,
The slit plate is a cooling device of a natural air circulation method having a curved cross section. The method of claim 1,
The slit plate is an air natural circulation cooling device having a cross section of the same shape as an upper surface of an airfoil. 4. The method of claim 3,
the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And,
Air natural circulation type cooling device in which the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel. 5. The method of claim 4,
the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And,
Air natural circulation type cooling device in which the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel. solar panels; and
a cooling device disposed on the rear surface of the solar panel;
The cooling device is a solar power generation device having a natural air circulation cooling function including a slit plate disposed spaced apart from the rear surface of the solar panel. 7. The method of claim 6,
The slit plate is a solar power generation device having a natural air circulation cooling function having a curved cross section. 7. The method of claim 6,
The slit plate is a photovoltaic device having a natural air circulation cooling function having a cross section of the same shape as the upper surface of the airfoil. 9. The method of claim 8,
the slit plate includes a first end corresponding to a leading edge of the airfoil and a second end corresponding to a trailing edge of the airfoil; And,
A photovoltaic device having a natural air circulation cooling function in which the second end of the first and second ends of the slit plate is disposed closer to the rear surface of the solar panel. 7. The method of claim 6,
The cooling device is a solar power generation device having a natural air circulation cooling function including at least two or more of the slit plate. 10. The method of claim 9,
each of said plurality of slit plates including a first end and a second end opposite said first end;
second ends of the first ends and second ends of the plurality of slit plates are disposed closer to the rear surface of the solar panel;
A photovoltaic device with an air natural circulation cooling function, wherein the distance between the first ends of the adjacent slit plates is greater than the distance between the second ends of the adjacent slit plates. 12. The method of claim 11,
A photovoltaic device having a natural air circulation cooling function in which one slit is defined between the rear surface of the solar panel and the uppermost slit plate or between the adjacent slit plates.

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