KR20140015806A - Photovoltaic power generation apparatus - Google Patents

Abstract

The present invention provides a photovoltaic power generating apparatus which comprises a supporting frame that has a plurality of solar cell modules mounted on the upper part of the frame, a vertical driving unit that is hinged to the lower part of the frame and can make the frame rotate vertically according to the elevation angle of the sun by time and season, a fixed frame which is fixed on a mounting surface of the supporting frame and of which the vertical driving unit may be located to have a height from the mounting surface, and it is equipped with a circular frame in which one part or the whole area of the upper part is formed circularly corresponding to a rotation radius of the supporting frame, and a horizontal rotation drive unit that is disposed between the vertical driving unit and the fixed frame and may rotate the supporting frame horizontally from the fixed frame corresponding to the elevation angle of the sun by time.

Description

[0001] The present invention relates to a photovoltaic power generation apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar power generation device, and more particularly, to a solar power generation device capable of changing the arrangement angle and arrangement direction of the solar cell module according to the altitude and direction of the sun.

Alternative energy is being developed as fossil fuels such as petroleum and coal are depleted. Especially, energy resources utilizing solar energy are being actively developed.

Power generation technologies that utilize solar energy to produce electricity include solar power generation that uses solar heat to drive a heat engine to generate electricity, and solar power that generates electricity from solar cells using solar light.

Here, a solar cell used for solar power generation includes a semiconductor compound element that converts sunlight directly into electricity.

As the solar cell used for the photovoltaic power generation, usually silicon and a composite material are usually used. Specifically, a solar cell uses a P-type semiconductor and an N-type semiconductor in combination, and utilizes a photoelectric effect to generate electricity by receiving sunlight.

Most of the solar cells are composed of large-area P-N junction diodes, and the electromotive force generated at the opposite ends of the P-N junction diode is connected to an external circuit.

The minimum unit of such a solar cell is referred to as a cell. Actually, the solar cell is rarely used as a cell.

This is because the voltage from one cell is very small, about 0.5 V, compared to several tens or hundreds of volts (V) of voltage required for practical use. This is why a plurality of unit solar cells can be connected in series or parallel It is connected and used.

In addition, when the solar cell is used outdoors, it is subjected to various harsh environments. Therefore, in order to protect a plurality of cells connected with a necessary unit capacity in a harsh environment, a solar cell module .

However, since the solar cell module must be used in a large amount in order to obtain a constant electric power, there is a restriction on the installation site and the restriction of the lower support structure due to the arrangement structure of the solar cell module is restricted, There is no problem in the case of outdoor facilities, but in case of installing in a multi-family house that occupies a large number of houses, it is difficult to individually install in a household.

In addition, since the supporting structure for supporting the conventional solar cell module is often joined by welding, the main frames and the supporting frames for supporting the solar cell modules, the supporting columns for supporting the main frame to the ground are respectively welded once, There is a difficulty in adjusting the arrangement state when welding is completed.

Particularly, in the case of a fixed support structure supporting a large number of solar cell modules in a large amount, the arrangement angle is fixed, and there is a limitation in adjusting the arrangement angle of the solar cell module according to the change of the sun height according to the season change. There is still a problem that the electricity production efficiency is lowered.

In Korea, when we look at the southern altitude of each season considering the latitude (38 °), the summit altitude of the sun is about 52 °, the altitude is 75.5 °, and the winter solstice is 28.5 °.

However, the conventional photovoltaic device is installed with a fixed angle toward the south facing the situation, so it is urgent to take measures against large variations in the electricity production by season.

In addition, as the eco-friendly energy business becomes more visible and solar power generation becomes more important, facilities for large-capacity photovoltaic power generation are required. However, There is a limit that requires a facility capable of supporting it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a solar cell module capable of changing the arrangement angle and arrangement direction of the solar cell module in accordance with the change in altitude and direction of the sun, The present invention provides a photovoltaic power generation apparatus that can be installed.

According to an aspect of the present invention, there is provided a solar cell module comprising: a supporting frame on which a plurality of solar cell modules are mounted; A vertical drive unit hinged to the lower side of the support frame to drive the support frame in a vertical direction in response to the hourly and seasonal elevation angles of the sun; A fixed frame and the vertical driving part having a circular frame fixed on an installation surface such that the vertical driving part has a height from the installation surface, and a part or all of the upper end is formed in a circular shape corresponding to the rotation radius of the support frame; And a horizontal driving part interposed between the fixed frame and the support frame to rotate in a horizontal direction from the fixed frame in response to the hourly azimuth angle of the sun.

The vertical driving part includes a hinge member coupled to the support frame so as to be rotatable in a vertical direction on one side of the lower support frame, and the support frame in a vertical direction with the hinge member as an axis on the other side of the support frame. It may include a link unit for providing a driving force to rotate, and a rotating frame coupled to the hinge member and the lower end of the link unit, respectively, and rotates in the horizontal direction on the fixed frame.

The link unit may include a first link coupled to one end of the support frame so as to be rotatable, one end coupled to the other end of the first link, and the other end coupled to the rotary frame, and coupled to the first link. A second link that interlocks, a third link and a fourth link having one end coupled to a central portion of the first link and the second link, and the other end rotatably coupled to each other, and the first link and the second link; It may include a drive member for providing a driving force to change the height of the first link to the fourth link by stretching or compressing the portion where the link and the third link and the fourth link, respectively.

The photovoltaic device is provided at a portion where the first link and the second link is formed by a female thread formed therein so as to receive the rotational force of the driving member to tension or compress the first to fourth links. The first distance adjusting member may further include a second distance adjusting member provided at a portion where the third link and the fourth link meet.

The driving member has a male screw formed on an outer circumferential surface thereof so as to be inserted into the first distance adjusting member and the second distance adjusting member to rotate, and one end thereof is coupled to the driving member to rotate. It may include a drive shaft for increasing or decreasing the distance between the two distance adjusting member.

The horizontal driving unit may include a towing member provided to surround the outer circumferential surface of the circular frame, and a second driving motor that engages with the towing member to provide rotational force to the rotating frame to rotate along the towing member. have.

The towing member may include a stopper formed on the circular frame to have a length corresponding to a rotation radius of the support frame to limit the rotation range of the second driving motor between both ends.

The photovoltaic device may further include a roller member interposed between the vertical driving part and the fixed frame to reduce frictional force when the rotating frame rotates on the circular frame.

According to the photovoltaic device according to the present invention,

First, it is possible to accurately track the position corresponding to the change of the altitude and azimuth angle of the sun by providing a horizontal drive and a vertical drive, respectively,

Second, there is an effect to maximize the light collection efficiency and power generation efficiency of the solar cell module according to the exact position tracking of the sun.

1 is a rear perspective view of a photovoltaic generator according to an embodiment of the present invention.
2 is a side view of the photovoltaic device shown in Fig.
3 is a plan view of the photovoltaic device shown in FIG. 1.
FIG. 4 is a partially enlarged view of the horizontal drive unit shown in FIG. 2.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should appropriately define the concept of the term to describe its invention in the best way possible It should be construed in the meaning and concept consistent with the technical idea of the present invention.

FIG. 1 is a rear perspective view of a photovoltaic device 100 according to an embodiment of the present invention, and FIG. 2 is a side view of the photovoltaic device 100 shown in FIG.

1 and 2, the photovoltaic device 100 according to the present invention includes a support frame 110 on which a plurality of solar cell modules 10 are mounted, and the support frame 110 is rotated in a vertical direction. Vertical drive unit 120 to drive so as to, the fixed frame 150 for supporting the vertical drive unit 120 from the installation surface, and to rotate the vertical drive unit 120 in the horizontal direction on the fixed frame 150 It includes a horizontal drive unit 160 to drive.

The photovoltaic device 100 of the embodiment of the present invention is characterized in that the solar cell modules 10 are arranged horizontally long and four vertically arranged in three by three in total so that a total of twelve solar cell modules 10 are provided, 3 kW, and the number of the solar cell modules 10 is related to the total solar cell power generation capacity, so that the arrangement and shape of the solar cell modules 10 can be changed accordingly.

The solar cell module 10 has a plurality of patterns formed in a lattice structure, and is spaced laterally so as to form a gap between adjacent solar cell modules 10 so that wind or snow can move.

In addition, the solar cell module 10 may be spaced apart to generate a height difference between the adjacent solar cell module 10 in the zigzag direction to move the wind or snow.

The vertical driving unit 120 has a function of rotating along the altitude angle corresponding to the time and season of the sun.

The vertical driving part 120 is provided on the lower side of the support frame 110, the hinge member 121 is hinged on the fixed frame 150, and is disposed adjacent to the hinge member 121 is the support frame 110 It includes a link unit 130 to provide a driving force to rotate in a vertical direction, and a rotating frame 125 to integrally secure the lower end of the hinge member 121 and the link unit 130.

Therefore, while the link unit 130 is driven in the vertical direction about the hinge member 121, the support frame 110 is rotated in the vertical direction corresponding to the altitude angle of the sun.

At this time, the rotating frame 125 is coupled to rotate in the horizontal direction on the fixed frame 150 has a function to rotate the support frame 110 in the horizontal direction together with the vertical drive unit 120.

The link unit 130 is coupled to the first link 131 so that one end is rotatable from the lower side of the support frame 110, and one end is coupled to the other end of the first link 131 and the rotation The other end is coupled to the frame 125, and one end of the second link 132 interlocked with the first link 131 and the central portion of the first link 131 and the second link 132, respectively. A third link 133 and a fourth link 134 coupled to each other and rotatably coupled to the other end, and a portion where the first link 131 and the second link 132 meet and the third link 133. ) And a driving member 135 which provides a driving force to change the height of the first link 131 to the fourth link 134 by tensioning or compressing a portion where the fourth link 134 meets.

Here, the driving member 135 may provide a driving force according to the height change of the first link 131 to the fourth link 134 in the form of a cylinder using hydraulic pressure or pneumatic pressure. Hereinafter, the driving force using the screw coupling method is provided. Explain in the manner provided.

The first link 131 to the fourth link 134 are provided in pairs facing each other adjacent to each other to provide a stable vertical driving force between the support frame 110 and the rotation frame 125.

In this case, the driving member 135 includes a first driving motor 136 that provides a driving force, and a driving shaft 137 that is coupled to the first driving motor 136 to rotate and has a male screw formed on an outer circumferential surface thereof.

In this case, the link unit 130 includes a first distance adjusting member 138 rotatably coupled to a portion where the first link 131 and the second link 132 meet, and the third link 133 and the third link 133. A second distance adjusting member 139 is rotatably coupled to a portion where the four links 134 meet.

The first distance adjusting member 138 and the second distance adjusting member 139 have female threads formed on an inner circumferential surface thereof, and each of the driving shafts 137 is inserted to adjust the first distance when the driving shaft 137 rotates in the forward direction. The distance between the member 138 and the second distance adjusting member 139 becomes close, on the contrary, the distance between the first distance adjusting member 138 and the second distance adjusting member 139 when the drive shaft 137 is rotated backwards. It works far away.

The fixed frame 150 is provided to have a predetermined height from the installation surface to prevent interference from the installation surface when the vertical driving part 120 is driven in the vertical direction. Here, it is preferable that the installation surface corresponds to a position where the shadow of the roof of a high building or an adjacent tree or structure is not always cast.

3 is a plan view of the photovoltaic device 100 shown in FIG. 1, and FIG. 4 is a partially enlarged view of the horizontal driving unit 160 shown in FIG.

3 and 4, the upper surface of the fixed frame 150 is formed in a plane so that the rotating frame 125 is supported and rotated, a circular frame having at least a portion of one cross section formed in a circular shape ( 151 is provided.

The horizontal driver 160 is interposed between the vertical driver 120 and the fixed frame 150 to rotate the support frame 110 in the horizontal direction from the fixed frame 150 in correspondence to the hourly azimuth angle of the sun. To provide the ability to

Here, the support frame 110 is rotated corresponding to the azimuth angle of the sun moving from sunrise to sunset on the fixed frame 150, wherein the angle (θ) the rotation of the support frame 110 is about 160 ~ 200 ° Formed into a range.

In this case, a plurality of roller members 140 are provided between the rotating frame 125 and the circular frame 151 so as to reduce frictional force while the rotating frame 125 rotates on the circular frame 151.

The roller member 140 is coupled to prevent the rotational force of the rotating frame 125 from interfering on the circular frame 151 and to prevent the rotating frame 125 from being removed from the circular frame. do.

The horizontal driving unit 160 is engaged with the tow member 161 provided to surround the outer circumferential surface of the circular frame 151 and the tow member 161 to rotate along the tow member 161. It includes a second drive motor 166 to provide a rotational force to the rotating frame (125).

As shown in FIG. 4, the tow member 161 is formed of a chain, and the rotation frame 125 is rotated in the horizontal direction on the chain due to the driving force of the second driving motor 166.

At this time, the towing member 161 is formed to have a length corresponding to the rotation radius of the support frame 110 on the circular frame 151 between the two ends of the towing member 161 (the second driving motor ( 166 includes a stopper 152 that limits the range of rotation.

The stopper 152 may adjust the rotation range of the second driving motor 166 as both ends of the tow member 161 are coupled on the circular frame 151, or the tow member Both ends of the 161 may be formed to protrude to the outside of the circular frame 151.

Hereinafter, the operation and effect of the photovoltaic device 100 according to the present invention will be described in detail with reference to the drawings. In the following description, like reference numerals denote like elements.

A straight line connecting the surface of the solar cell module 10 from the sun should be in a vertical state to maximize the light collecting efficiency.

At sunrise, the sun's altitude remains the lowest. In this case, the arrangement angle of the solar cell module 10 should be the largest inclination angle from the ground.

To this end, the vertical driving unit 120 should be tensioned to push up the support frame 110 as much as possible.

In this case, since the first distance adjusting member 138 and the second distance adjusting member 139 are disposed adjacent to each other, the arrangement angle of the solar cell module 10 achieves the largest inclination angle (the smallest altitude angle). .

At this time, the horizontal driving unit 160 is operated so that the direction toward which the solar cell module 10 is directed in the horizontal direction is the east direction at which the sunrise begins.

Over time, the sun moves from east to southeast, and the elevation is also high.

Reflecting such a change in direction and altitude of the sun, the first driving motor 136 and the second driving motor 166 rotates in the forward direction, respectively, so that the solar cell module 10 rotates to look southeast. The inclination angle of the solar cell module 10 gradually decreases.

In this case, since the first distance adjusting member 138 and the second distance adjusting member 139 are disposed to be gradually spaced apart, the inclination angle of the solar cell module 10 is gradually reduced.

Over time, when the sun reaches its highest altitude, the sun is south.

At this time, the solar cell module 10 is rotated to face south by the second driving motor 166, the distance between the first distance control member 138 and the second distance control member 139 is farthest. Since the arrangement angle of the solar cell module 10 achieves the smallest inclination angle (the largest elevation angle). Therefore, the angle of the support frame 110 is to form the same angle as the ground.

As time passes, the sun moves in the southwest direction, and the altitude of the sun is lowered. Accordingly, the second driving motor 166 rotates so that the solar cell module 10 faces the southwest direction. Do this.

In addition, the height of the vertical driving unit 120 is also increased to reflect a lowered altitude of the sun.

In this case, since the distance between the first distance adjusting member 138 and the second distance adjusting member 139 is gradually closer to each other, the inclination angle of the solar cell module 10 is gradually increased again.

As sunset approaches, the sun is on the west, and the sun's altitude is also lower.

Reflecting this, the second driving motor 166 performs a rotational movement so that the solar cell module 10 faces the west direction.

In addition, the vertical driving unit 120 is positioned so that the inclination angle of the support frame 110 is increased by reflecting the sun altitude at sunset.

Therefore, the arrangement angle of the solar cell module 10 forms a maximum inclination angle. When the photovoltaic power generation is terminated after sunset, the photovoltaic device 100 is rotated to face the east direction before the start of the next sunrise so that the solar cell module 10 can concentrate again at the next sunrise. Also, the altitude is rotated to maintain the altitude at sunset to correspond to the altitude at sunrise.

Therefore, the photovoltaic device 100 according to the present invention automatically rotates to maximize the light collection efficiency according to the change in the altitude of the sun and the change in the azimuth angle of the sun over time, and also according to the change of the season The altitude and azimuth angle can be adjusted according to the time zone and the season in response to the altitude change.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: solar power generator 110: support frame
120: vertical drive unit 130: link unit
140: roller member 150: fixed frame
160: horizontal drive unit
10: Solar module

Claims (8)

A support frame on which a plurality of solar cell modules are mounted;
A vertical drive unit hinged to the lower side of the support frame to drive the support frame in a vertical direction in response to the hourly and seasonal elevation angles of the sun;
A fixed frame having a circular frame fixed to an installation surface so that the vertical driving part has a height from the installation surface, and a part or all of the upper end is formed in a circular shape corresponding to the rotation radius of the support frame;
A horizontal driving part interposed between the vertical driving part and the fixed frame to rotate the support frame in a horizontal direction from the fixed frame in correspondence to the hourly azimuth angle of the sun;
Photovoltaic device comprising a. The method according to claim 1,
The vertical driver may include:
A hinge member coupled to the support frame so as to be rotatable in a vertical direction on one side of the support frame; The link unit to provide, and the lower end of the hinge member and the link unit are coupled to each other, and a solar power generating device comprising a rotating frame rotating in the horizontal direction on the fixed frame. The method according to claim 2,
The link unit includes:
A first link having one end coupled to be rotatable from a lower side of the support frame, and a second end coupled to the other end of the first link and coupled to the other end of the rotating frame, and interlocked with the first link Link, the third link and the fourth link is coupled to the central portion of the first link and the second link and the other end is rotatably coupled with each other, the portion where the first link and the second link meets And a driving member configured to provide a driving force to change the height of the first to fourth links by tensioning or compressing a portion where the third link and the fourth link meet each other. The method according to claim 3,
A first distance adjusting member provided at a portion where the first link and the second link are formed to have a female thread formed therein so as to receive the rotational force of the driving member to tension or compress the first to fourth links; And a second distance adjusting member provided at a portion where the third link and the fourth link meet each other. The method of claim 4,
Wherein the driving member comprises:
A male screw is formed on an outer circumferential surface of the first distance adjusting member and the second distance adjusting member so as to be rotated, and one end is coupled to the driving member to rotate the first distance adjusting member and the second distance adjusting member. Photovoltaic device comprising a drive shaft for increasing or decreasing the distance between. The method according to any one of claims 1 to 5,
Wherein the horizontal driver comprises:
And a towing member provided to surround an outer circumferential surface of the circular frame, and a second driving motor that engages with the towing member to provide rotational force to the rotating frame to rotate along the towing member. Photovoltaic device. The method of claim 6,
The tow member is
And a stopper formed on the circular frame with a length corresponding to a rotation radius of the support frame to limit the range of rotation of the second driving motor between both ends. The method of claim 6,
And a roller member interposed between the vertical driving part and the fixed frame to reduce frictional force as the rotary frame rotates on the circular frame.

Images