KR20230115623A - bifacial solar cell module type frame and solar system including the same - Google Patents

Abstract

The present invention relates to a solar system in which a double-sided light-receiving solar cell module is installed vertically on the ground, and more particularly, to a frame for a double-sided light-receiving solar cell module that prevents shadows from occurring on the solar panel due to a structure It relates to a solar system that includes
And the frame has a main body; a first coupling part recessed inward from one surface of the main body along a first direction, into which one side of the module is fitted; second coupling parts formed on the front and rear surfaces of the main body in the first direction and coupled to each other with the corner brackets; a third coupling portion formed on a surface opposite to the surface on which the first coupling portion is formed and coupled to the fixing table; And formed on both side surfaces of the main body, formed in a shape in which the horizontal cross-sectional area gradually decreases toward the one surface to secure an inflow path of light to the edge of the module; is formed.

Description

Bifacial solar cell module type frame and solar system including the same}

The present invention relates to a solar system in which a double-sided light-receiving solar cell module is installed vertically on the ground, and more particularly, to a frame for a double-sided light-receiving solar cell module that prevents shadows from occurring on the solar panel due to a structure It relates to a solar system that includes

In general, photovoltaic power generation is widely used as clean energy, and various technologies for structures for such photovoltaic power generation are being developed.

However, the solar system using a conventional structure has a limited installation place, a high initial investment cost, and requires a large space to supply the required strategic production volume.

A lot of farmland is used as a large space for solar system installation, but when combined with crop cultivation, the amount of sunlight decreases due to the structure, resulting in difficulties in crop cultivation.

In order to solve this problem, as shown in FIG. 1, a photovoltaic system in which double-sided light-receiving solar cell modules are vertically arranged and installed in rural areas and farms has been proposed.

As a technology related to this, there is patent document 1, ‘vertical solar power facility equipped with double-sided modules’, and the purpose is to minimize solar energy loss and maintain land utilization by arranging solar panels vertically with the ground.

However, the conventional vertical photovoltaic system and Patent Document 1 have a problem in that the solar power generation efficiency is lowered due to the occurrence of shadows due to the structure for fixing the module during the time zone when the altitude of the sun increases and the summer season when the altitude of the sun is high do.

As shown in Figure 2, Patent Document 1 causes a shadow on the edge of the solar panel due to a bi-directional coupling member that presses and fixes the vicinity of the edge of the solar panel.

In the case of a photovoltaic system connected in series between modules, when any one module is shaded due to the bi-directional coupling member, the reduction in power generation of the module affects all modules connected in series. In addition, if the shade is generated for a long time, the resistance value of the corresponding module increases, causing damage to the bypass diode.

KR 10-2138744 B1

The present invention is to increase the efficiency of photovoltaic power generation by preventing the formation of shadows on both sides of a solar cell module according to the altitude of the sun through an anti-shading unit that is formed obliquely and recessed at a predetermined angle on both sides of a frame for a double-sided light-receiving solar cell module. .

A frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention includes a horizontal frame; vertical frame; A corner bracket coupling the horizontal and vertical frames to each other; includes.

And the main body in the horizontal and vertical frame; a first coupling part recessed inward from one surface of the main body along a first direction, into which one side of the module is fitted; second coupling parts formed on the front and rear surfaces of the main body in the first direction and coupled to each other with the corner brackets; a third coupling portion formed on a surface opposite to the surface on which the first coupling portion is formed and coupled to the fixing table; And formed on both side surfaces of the main body, formed in a shape in which the horizontal cross-sectional area gradually decreases toward the one surface, so as to secure an inflow path of light to the edge of the module; is formed.

The second coupling portion is formed on the front and rear surfaces of the first coupling portion and a predetermined distance apart from each other in a direction perpendicular to the one surface.

The front and rear surfaces are formed to be inclined toward the first coupling portion, so that surfaces coupled between the horizontal and vertical frames come into contact with each other.

According to an embodiment of the present invention, although it is installed on farmland, the amount of sunlight shining on crops is not reduced due to the structure, and the solar power generation efficiency can be increased by preventing the formation of shadows on both sides of the double-sided photovoltaic solar cell module by the frame. there is.

In addition, when the solar cell module is removed from the inside of the frame for replacement or maintenance, the module can be easily removed by disengaging any one of the horizontal frame and the vertical frame from the fixing unit.

1 is a view showing a vertical photovoltaic system including a double-sided light-receiving solar cell module.
2 is a view showing a coupling member for fixing a double-sided light-receiving solar cell module according to the prior art.
3 is a front view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.
4 is a perspective view of a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.
5 is a front cross-sectional view of a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.
6 is a side view of a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.
7 is a view showing a state in which an inflow path of light is secured to an edge of a solar cell module through an anti-shading unit according to an embodiment of the present invention.
8 is a view showing a state in which shadows are generated on a side surface of a solar cell module.
9 is a cross-sectional view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention viewed from the side.
10 is a cross-sectional view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to another embodiment of the present invention viewed from the side.

Hereinafter, with reference to the accompanying drawings, it will be described in detail so that those skilled in the art can easily carry out the present invention. In order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the accompanying drawings.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

3 is a front view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.

Looking at this, the photovoltaic system includes a fixture installed on the ground; a frame for a double-sided light-receiving solar cell module coupled to the holder; and a double-sided light-receiving solar cell module 300 coupled to the inside of the frame and vertically coupled to the ground.

The fixing stand is a vertical fixing table 101 installed vertically on the ground; And doedoe coupled to the vertical fixing table 110, may include a horizontal fixing table 102 installed parallel to the ground.

The frame includes a vertical frame 201; horizontal frame 202; and corner brackets coupling the vertical and horizontal frames 201 and 202 to each other.

The vertical frame 201 is installed in a direction perpendicular to the ground and may be combined with the vertical fixing unit 101 .

The horizontal frame 202 is installed in a direction parallel to the ground, and may be combined with the horizontal fixing table 102.

According to an embodiment of the present invention, the vertical frame 201 and the horizontal frame 202 are coupled to the vertical holder 101 and the horizontal holder 102, respectively.

According to another embodiment of the present invention, the vertical frame 201 is coupled to the vertical holder 101, but in this case, the horizontal fixture 102 may not be included.

According to another embodiment of the present invention, the horizontal frame 202 is coupled to the horizontal fixture (102). In this case, it includes a vertical fixture (101).

The corner bracket is integrally formed while forming a '└' shape, and is coupled and fastened to the front and rear surfaces of the vertical frame 201 and the horizontal frame 202, respectively, so that the two vertical frames 201 and the two horizontal frames ( 202) are combined to form a square shape.

4 is a perspective view of a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention. 5 is a cross-sectional view of a frame for a double-sided light-receiving solar cell module viewed from the front according to an embodiment of the present invention. 6 is a side view of a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention.

Referring to these drawings, the horizontal and vertical frames 201 and 202 include a main body 210; a first coupling part 220; a second coupling part 230; a third coupling part 240; and an anti-shading unit 250.

A first direction, which will be described later, means a Y-axis direction, a second direction means an X-axis direction, and a third direction means a Z-axis direction.

The first coupling part 220 is recessed inward along a first direction on one surface of the main body 210, and one side of the module 300 is fitted.

A buffer member may be provided in a gap formed when the first coupler 220 and the module 300 are coupled.

The buffer member is provided with a rubber packing or an adhesive filling the gap to prevent the module 300 from being damaged due to repeated or strong movement in the gap due to external factors such as strong wind.

The second coupling part 230 is formed on the front and rear surfaces of the main body 210 in the first direction, and is molded to the corner bracket.

Also, the second coupling portion 230 is formed apart from the first coupling portion by a preset distance in a third direction, thereby preventing interference with the module 300 when the corner bracket is molded.

The second coupling part 230 according to an embodiment of the present invention is recessed inward from the front and rear surfaces, and the corner bracket is fitted.

In addition, the front and rear surfaces are formed to be inclined toward the first coupling part 220 so that the surfaces to be coupled when the vertical frame 201 and the horizontal frame 202 are coupled come into contact with each other.

Through this, contaminants such as rainwater and snow are prevented from flowing into the first coupling portion 220 and the second coupling portion 230 .

The third coupling portion 240 is formed along a first direction on a surface opposite to the surface on which the first coupling portion 220 is formed, and is formed thinner than the width of the opposite surface. In this case, the width means the length of the main body in the second direction.

The third coupling part 240 may be coupled through a coupling bolt 400 as shown in FIG. 3 . At this time, a coupling hole 241 having a shape corresponding to the coupling bolt 400 may be formed at one side of the third coupling portion 240 .

Alternatively, a protruding part may be included on one side of the fixing table so as to be engaged with the third coupling part 240, and the third coupling part 240 may be formed with a groove or a hooking part having a shape corresponding to the protruding part. .

7 illustrates a state in which an inflow path of light is secured to an edge of a solar cell module through an anti-shading unit according to an embodiment of the present invention. 8 is a view showing how shadows are generated on the side of the module.

Referring to FIG. 7 , the anti-shading part 250 is formed on both sides of the main body 210 and is inclined toward the first coupling part 220 .

The anti-shading part 250 according to another embodiment of the present invention is formed on both sides of the main body 210, and has a shape in which the horizontal cross-sectional area gradually decreases toward one side where the first coupling part 220 is formed. can be formed

In detail, in the anti-shading unit 250, the slope of the line segment connecting the central point at the corner in contact with one surface where the first coupling part 220 is formed and the central point at the opposite corner is based on the one surface. It is formed so as to have a predetermined angle.

The angle is formed from 20° to 50°.

When the angle exceeds 50°, structural stability may be secured, but a light inflow path to the edge of the module 300 is not secured, and shadows are generated.

When the angle is less than 20°, it is possible to prevent shading by securing an inflow path of light to the edge of the module 300, but structural safety is not secured.

That is, the angle at which the anti-shading part 250 according to the embodiment of the present invention is formed not only secures structural stability but also secures an inflow path of light to the edge of the module 300 so that the side of the module 300 is shaded. prevent this from happening

9 is a cross-sectional view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to an embodiment of the present invention viewed from the side. 10 is a cross-sectional view of a photovoltaic system including a frame for a double-sided light-receiving solar cell module according to another embodiment of the present invention viewed from the side.

Referring to these drawings, the photovoltaic system according to the embodiment of the present invention includes a vertical holder 101, but a horizontal fixture 102 may or may not be included depending on the position of the frame.

9 shows that the frame is coupled to the horizontal holder 102, and as shown in FIG. 3, the horizontal holder 102 is disposed on the upper and lower sides of the module 300.

In this case, in order for the module 300 to be stably installed in a direction perpendicular to the ground, the horizontal frame 202 is preferentially coupled to the horizontal fixture 102 located on the lower side of the module 300 to be installed.

Further, vertical frames 201 are coupled to left and right sides of the horizontal frame 202, and the module 300 is inserted into the frame.

Finally, the horizontal frame 202 is coupled to the horizontal fixture 102 located on the upper side of the module 300.

10 shows a frame coupled to the vertical holder 101.

In this case, the vertical frame 201 is preferentially coupled to the vertical holder 101 located on the left or right side of the module 300. In addition, a horizontal frame 202 is coupled to the lower side of the vertical frame 201, and another vertical frame 201 is coupled to the vertical holder 101 located in a direction corresponding to the vertical frame 201.

And the module 300 is inserted into the frame.

Finally, the horizontal frame 202 is coupled to the vertical frame 201 coupled to the vertical holder 101 so that the horizontal frame 202 is positioned on the upper side of the module 300 .

As shown in FIGS. 9 and 10 , in the photovoltaic system according to an embodiment of the present invention, when a problem occurs in the solar cell module 300 coupled to the inside of the frame and is replaced or maintained, two By disengaging only one of the two vertical frames 201 and the two horizontal frames 202, the module 300 can be easily removed from the inside of the frame.

The scope of the present invention should be construed as including all changes or modified forms derived based on the technical idea of the present invention in addition to the embodiments disclosed herein.

101: vertical fixture
102: horizontal fixture
201: vertical frame
202: horizontal frame
210: main body
220: first coupling part
230: second coupling part
240: third coupling part
241: coupling hole
250: anti-shading unit
300: solar cell module
400: coupling bolt

Claims (4)

In the frame for a double-sided light-receiving solar cell module installed vertically on the ground,
the frame,
horizontal frame; vertical frame; Including; corner brackets for coupling the horizontal and vertical frames to each other,
In the horizontal and vertical frames,
with the main body,
A first coupling part that is recessed inward along a first direction on one surface of the main body and fitted with one side of the module;
Second coupling parts formed on the front and rear surfaces of the main body based on the first direction and coupled to each other to form and fasten with the corner brackets;
It is formed on both sides of the main body and is formed in a shape in which the horizontal cross-sectional area gradually decreases toward the one side, so that a shade prevention portion is formed to secure an inflow path of light to the edge of the module. frame for the module. According to claim 1,
In the horizontal and vertical frames,
It is formed along the first direction on the opposite side of the one side on which the first coupling portion is formed, is formed thinner than the width of the opposite side, and a third coupling portion coupled to a fixing table installed on the ground is further formed Both sides, characterized in that Frame for light-receiving solar cell module. According to claim 2,
The corner bracket is integrally formed while forming a '└' shape, and is molded and fastened to the vertical and horizontal frames, respectively,
A frame for a double-sided light-receiving solar cell module, characterized in that the front and rear surfaces of the vertical and horizontal frames to which the corner brackets are matched are inclined toward the first coupling part, so that surfaces coupled between the vertical and horizontal frames come into contact with each other. A fixture including a vertical fixture installed vertically on the ground and a horizontal fixture coupled to the vertical fixture and installed parallel to the ground;
a frame coupled to the fixing table; and
A double-sided light-receiving solar cell module coupled to the inside of the frame and vertically installed on the ground;
the frame,
A horizontal frame, a horizontal frame, and a corner bracket coupling the horizontal and vertical frames to each other,
In the horizontal and vertical frames,
with the main body,
A first coupling part that is recessed inward along a first direction on one surface of the main body and fitted with one side of the module;
Second coupling parts formed on the front and rear surfaces of the main body based on the first direction and coupled to each other to form and fasten with the corner brackets;
A third coupling portion formed along a first direction on a surface opposite to the surface on which the first coupling portion is formed, thinner than the width of the opposite side, and coupled to the fixing table;
It is formed on both sides of the main body, and is formed in a shape in which the horizontal cross-sectional area gradually decreases toward the one side to secure an inflow path of light to the edge of the module.
The corner bracket is integrally formed while forming a '└' shape, and is molded and fastened to the vertical and horizontal frames, respectively,
The photovoltaic system of claim 1 , wherein front and rear surfaces of the vertical and horizontal frames to which the corner brackets are coupled are inclined toward the first coupling portion, so that surfaces coupled between the vertical and horizontal frames come into contact with each other.

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