WO2018169140A1

WO2018169140A1 - Photovoltaic module

Info

Publication number: WO2018169140A1
Application number: PCT/KR2017/008137
Authority: WO
Inventors: 원창섭
Original assignee: 엘에스산전 주식회사
Priority date: 2017-03-17
Filing date: 2017-07-28
Publication date: 2018-09-20

Abstract

The present invention relates to a photovoltaic module and, more specifically, to a photovoltaic module for which a bird access prevention area is enlarged. The photovoltaic module according to one embodiment of the present invention comprises: a photovoltaic module including a plurality of solar cells so as to generate electric power; a support provided at one side of the photovoltaic module; a rotating bar rotatably provided at an upper end of the support; and a wire provided at an end part of the rotating bar.

Description

Solar modules

The present invention relates to a photovoltaic module, and more particularly to a photovoltaic module provided with a bird access prevention device.

In general, a photovoltaic device is a system that generates power by converting sunlight into electrical energy using a solar cell. The photovoltaic device is usually manufactured in the form of a module. The solar module is a form in which solar cells are connected in series with ribbon wires, pressed together with glass and encapsulant at high temperature / high pressure, and connected to a frame.

The power generation efficiency of the photovoltaic device depends on the irradiation amount of solar light, in order to increase the power generation efficiency, a lot of sites with good radiation dose are needed. In the case of installing such a photovoltaic device on land, there is a limitation in practical use because of difficulty in selecting a site and a civil work such as stopping work. As an alternative, a water-based photovoltaic device was activated.

In such a photovoltaic device, the panel of the photovoltaic module should be kept clean in order to prevent a decrease in power generation efficiency of photovoltaic devices. The solar cell is exposed to the outside of the solar module, and when the solar cell is blocked by the external environment, the output of the solar module system is significantly reduced. If dust or dirt obstructs the solar cell, the temperature of the partially obscured solar cell increases in the structure connected in series, which is caused by the loss of more than one output of the solar cell string in the solar module. It leads. This phenomenon is called hot-spot. In addition, in the case of the water-based solar module, there is a possibility of reducing the output of the solar module and durability of the solar module according to the discharge of algae.

1 is a perspective view of a solar module according to the prior art. Looking at the solar module of the prior art, the conventional solar module (1) is connected to the solar cell (2) in series and in parallel to compress the front and rear encapsulant and glass in a high-temperature, high-pressure lamination process (lamination) process It has a configuration in which it is connected by a frame. The photovoltaic module 1 generates a current using solar energy obtained from the solar cell 2, and the current flows through a wire connected to the photovoltaic module 1 to generate power.

If dust or dirt accumulates in the solar cell 2, the solar radiation cannot be directly received, so the flow of current at the site where the solar cell 2 is located is blocked, and only in the remaining solar cell 2 site. Current will flow. In addition, local temperature rises may occur. In addition, algae access and secretions corrode the aluminum frame of the module, which greatly affects the durability of the solar module.

The algae access preventing device is provided to prevent the algae's access. Photovoltaic module according to the prior art used a method for installing the fixing stand (3) on both sides of the frame of the solar module (1), the wire (4) is installed between the fixing stand (3) to prevent birds from approaching.

However, the algae access preventing device according to the prior art does not have a great effect because it uses a fixed wire. In addition, since it is installed on the surface of the photovoltaic module 1, the shadow by the stator 3 and the wire 4 may appear depending on the position of the sun. This may lead to a decrease in efficiency of the solar module 1.

The present invention has been made to solve the above-mentioned problems, an object of the present invention is to provide a solar module with an expanded bird access protection area.

Solar module according to an embodiment of the present invention is formed of a plurality of solar cells to generate power; A support installed on one side of the solar module; A rotating bar rotatably installed on the top of the support; And a wire installed at an end of the rotating bar.

Here, the support is characterized in that the bent portion is formed so that the middle portion is opened in a direction away from the solar panel.

In addition, it is characterized in that it further comprises a drive motor installed on the support to rotate the rotary bar.

In addition, it characterized in that it further comprises a driven gear interposed between the drive motor and the rotary bar.

In addition, a rotary ring is formed at the lower end of the rotary bar, the driven shaft of the driven gear is characterized in that coupled to the rotary ring.

In addition, the upper portion of the support is characterized in that the housing for receiving the drive motor and the driven gear is provided.

In addition, the housing is characterized in that the control unit for controlling the drive motor is provided.

In addition, the rotation bar is characterized in that it is provided with a plurality of spaced apart from the predetermined angle around the rotation ring.

The control unit may adjust the range of motion of the rotation bar to be within a range that does not interfere with the sun and the line connecting the upper end of the solar module.

According to the solar module according to an embodiment of the present invention, since the access protection area of the bird is expanded, the access protection effect is large.

Accordingly, the possibility of contamination of the surface of the solar module by algae is reduced, leading to a reduction in the possibility of hot spots, prevention of the reduction of solar power output, and improvement of durability of the solar module.

1 is a perspective view of a solar module according to the prior art.

2 is a perspective view of a solar module according to an embodiment of the present invention.

3 is a partial front view of FIG. 2.

Figure 4 is a side view as an operation of the solar module according to an embodiment of the present invention.

5 is a perspective view of a support and a rotation bar applied to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to explain in detail enough to enable those skilled in the art to easily carry out the invention, and thus the present invention. It is not intended that the technical spirit and scope of the invention be limited.

2 is a perspective view of a solar module according to an embodiment of the present invention. 3 is a partial front view of FIG. 2, and FIG. 4 is a side view of FIG. 2. A solar module according to each embodiment of the present invention will be described in detail with reference to the drawings.

Photovoltaic module according to an embodiment of the present invention is formed of a plurality of solar cells 11 to generate a solar module 10; A support 20 installed on one side of the solar module 10; Rotating bar 30 is rotatably installed on the upper end of the support 20; And a wire 40 installed at an end portion of the rotating bar 30.

In the solar module 10, a plurality of solar cells 11 are connected in series and in parallel in a frame. The photovoltaic module 10 generates a current using solar energy obtained from the solar cell 11, and this current flows through a wire connected to the module to the photovoltaic module 10 to generate power.

The photovoltaic modules 10 are grouped by a plurality of solar modules 10 installed side by side in series or in parallel. A supporter 15 having buoyancy is provided to support the plurality of solar modules 10 on the surface of the water. In the case of the photovoltaic module 10 installed in the water phase, since the photovoltaic module 10 should be installed at a predetermined distance away from the water surface, the support 15 should be installed to float on the water surface with sufficient buoyancy. Some are provided with a mounting portion 17 protruding to install the solar module 10.

In addition, a linkage 16 may be provided between each support 15 to create a passage for maintenance.

The support 20 is installed in the frame forming the outline of the solar module 10. The support 20 may be installed at the outer end of the frame of the photovoltaic module 10 installed at both ends of each row of the photovoltaic modules 10 in a group. have. That is, the right end of the photovoltaic module 10 installed on the right side and the left end of the photovoltaic module 10 installed on the left side may be respectively installed in the drawing. Of course, in addition to the purpose of use or the surrounding environment, the support 20 may be installed for each solar module 10 or may be installed in units divided into a plurality.

The support 20 has a lower end fixed to the frame of the solar module 10. Support 20 may be coupled to the frame of the solar module 10 through a variety of coupling methods, such as screw coupling, bonding coupling, fitting coupling. 3 shows an example in which the support 20 is screwed to the frame of the solar module 10 through the fixing bolt 19.

The support 20 may be composed of a plate, a bar or a rod. The support 20 may be divided into a lower portion 21, an intermediate portion 22, and an upper portion 23.

The lower end 21 of the support 20 is a portion coupled to the frame of the solar module 10. The lower portion 21 may be formed with a screw hole 24 for fitting the fixing bolt 19 (see Fig. 5).

The middle part 22 of the support 20 may be bent from the lower end 21. The middle portion 22 of the support 20 may be bent toward the outside of the solar module 10. Accordingly, when the support 20 is installed in the photovoltaic module 10, it may be positioned outside the outline of the photovoltaic module 10. Accordingly, when the sun is located on the left and right of the solar module 10, the possibility of the sun shadow on the solar module 10 is reduced.

The upper end 23 of the support 20 may be bent again from the middle portion 22. The upper end 23 of the support 20 may be formed in the same direction as the lower end 21. The upper end 23 of the support 20 may be formed to a sufficient length. That is, the end of the upper end 23 is formed to have a sufficient distance from the solar module 10.

The upper part of the upper end 23 is provided with a housing 25. The housing 25 is formed to receive the drive motor 50 and the driven gear 55. The housing 25 may be formed in a box shape. The housing 25 may be sealed.

In the housing 25, a drive motor 50 is provided to provide rotational force to the rotation bar 30. The driving motor 50 may be driven by an external power source or a power source generated by the solar module 10. The drive motor 50 may be engaged with the driven gear 55 to provide a driving force.

The driven gear 55 may be installed in the housing 25 to transmit the driving force generated by the driving motor 50 to the rotation bar 30. The driven gear 55 may be engaged with the driving motor 50 to reduce the number of rotations transmitted to the rotation bar 30 and increase the rotation force. One end of the driven shaft 56 of the driven gear 55 is rotatably supported by the mounting table 26 of the housing 25, and the other end thereof may be coupled to the rotary ring 31 of the rotation bar 30.

A part of the housing 25 may be provided with a mounting boss 26 that can rotatably support the driven shaft 56 of the driven gear 55. The mounting table 26 may be a portion in which a portion of the housing 25 protrudes inward. The bearing 60 may be interposed between the mounting table 26 and the driven shaft 56.

The control unit 65 may be provided inside or outside the housing 25. The controller 65 may turn on / off the driving motor 50 or adjust a rotation direction, a rotation speed, a rotation speed, and the like. The controller 65 may rotate the driving motor 50 forward or reverse. The controller 65 may adjust the rotation speed of the driving motor 50 to rotate the rotation range of the rotation bar 30 within a predetermined angle. Here, the rotation angle range of the rotation bar 30 may be set in consideration of the angle between the sun and the solar module 10. This angle can also be set in consideration of the altitude of the seasonal sun.

Rotating bar 30 is rotatably installed on the upper end of the support (20). The lower end of the rotary bar 30 may be provided with a rotary ring 31. The rotary ring 31 may be integrally formed at the lower end of the rotary bar 30.

The rotary ring 31 may be coupled to the driven shaft 56 of the driven gear 55 to rotate together according to the rotation of the driven gear 55. Although not shown separately, when there is no drive motor 50 or the driven gear 55, the rotary ring 31 is rotatably coupled to the shaft or protrusion projecting on the upper end of the support 20 can be manually rotated. .

The rotary bar 30 is coupled to the driven gear 55 to enable forward and reverse rotation within a range of 360 degrees or a predetermined angle.

The wire 40 is installed on the top of the rotation bar 30. The upper end of the rotation bar 30 may be provided with a wire hole in which the wire 40 may be installed. The wire 40 may be made of a conductive material to allow current to flow. Here, the current flowing in the wire 40 may be a current due to power generated by the solar module 10.

Referring to Figure 4, look at the operation of the solar module according to an embodiment of the present invention.

Looking at the embodiment shown in the solar module on the right in Figure 4, the rotation bar 30 is installed to be rotated 360 degrees. The rotary bar 30 rotates 360 degrees with respect to the rotary ring 31 or the driven shaft 56 to cover an area of a predetermined range. At this time, the covering range is formed in a circular shape on the side, it is composed of a cylindrical shape in three dimensions. The algae are prevented from accessing the solar module 10 by the rotating wire 40.

Looking at the embodiment shown in the solar module on the left in Figure 4, the rotation bar 30 is set to rotate forward and reverse in a predetermined angle range. The support 20a of this embodiment may be formed shorter than the support 20 of the above embodiment. In addition, the rotation bar 30a of this embodiment may be formed longer than the rotation bar 30 of the right embodiment. Accordingly, it is possible to cover a wider range from side to side. In each embodiment, it is set so as not to interfere with the line L formed by the sun and the upper end of the solar module 10. Accordingly, the shadow of the solar module 10 due to the

wires

40 and 40a or the rotation bars 30 and 30a does not occur.

5 is a perspective view of a support and a rotation bar applied to the solar module according to another embodiment of the present invention. In this embodiment, it is shown that the rotary bars 30-1, 30-2, 30-3 are composed of a plurality. The rotary ring 31 is provided with a plurality of rotary bars (30-1, 30-2, 30-3). Each of the rotating bars 30-1, 30-2, and 30-3 is formed to open at a predetermined angle. For example, each of the rotation bars 30-1, 30-2, and 30-3 may be formed of three pieces that are opened at an angle of 120 degrees to each other. As the rotation bars 30-1, 30-2, and 30-3 are provided in plural, the ability to cover a predetermined range can be improved, and the rotation speed or the rotation angle of the driving motor 50 can be relatively reduced.

Embodiments described above are embodiments for implementing the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. That is, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims

In the solar module is formed of a plurality of solar cells to generate power,

A support installed on one side of the solar module;

A rotating bar rotatably installed on the top of the support; And

And a wire installed at an end of the rotating bar.
The photovoltaic module of claim 1, wherein the support is formed with a bent portion so that an intermediate portion thereof is opened in a direction away from the solar panel.
The photovoltaic module of claim 1, further comprising a driving motor installed on the support and rotating the rotation bar.
The solar module of claim 3, further comprising a driven gear interposed between the drive motor and the rotation bar.
The solar module of claim 4, wherein a rotation ring is formed at a lower end of the rotation bar, and a driven shaft of the driven gear is coupled to the rotation ring.
The solar module of claim 5, wherein a housing for accommodating the driving motor and the driven gear is provided at an upper portion of the support.
The solar module of claim 6, wherein the housing is provided with a control unit for controlling the driving motor.
The photovoltaic module according to claim 6, wherein the rotation bar has a plurality of rotation bars provided at a predetermined angle apart from the rotation ring.
The solar module of claim 7, wherein the control unit adjusts the range of motion of the rotation bar to be within a range that does not interfere with a line connecting the sun and the upper end of the solar module.