KR102302153B1 - A solar tracking apparatus - Google Patents

Abstract

The present invention provides a solar tracking device. Solar tracking device of the present invention is installed in the first axis direction on the first and second support frames spaced apart from each other, the rotating shaft rotatable about the first axis; a solar cell module installed on the rotating shaft so as to be rotatable about a second axis orthogonal to the first axis; a first moving member for rotating the rotating shaft about the first axis; and a second movement member for rotating the solar cell module about the second axis on the rotation axis.

Description

Solar tracking device {A SOLAR TRACKING APPARATUS}

The present invention relates to a solar tracking device.

BACKGROUND ART In general, solar power generation is a power generation method that directly converts light energy of the sun into electric energy using a photoelectric converter called a solar cell as one of the power generation technologies by solar energy.

A solar cell refers to a device that can convert solar energy into electrical energy, and when light of energy greater than the forbidden bandwidth is irradiated to a semiconductor junction region having a PN junction, electrons and holes are generated and the internal electric field formed in the junction region is Electrons move to the N-type semiconductor and holes move to the P-type semiconductor to generate an electromotive force.

Photovoltaic power generation using such solar cells has been in the spotlight as an alternative energy source due to the depletion of petroleum, a fossil fuel, and global warming. is spreading rapidly.

In general, the photovoltaic device may be divided into a fixed type and a tracking type according to a method of installing and driving such a solar panel. The stationary type solar panel is fixed and cannot change the azimuth and altitude, and the tracking type can change the azimuth and altitude of the solar panel according to the position of the sun by itself.

Most of the fixed photovoltaic power generation device installs a solar panel to face south, and the direction and inclination of the solar panel do not change after installation in this way. Such a fixed photovoltaic power generation device has the advantage that the initial installation cost is low and the operation and maintenance cost is small. There was a disadvantage that it was not possible to increase the

The tracking type solar power generation device was developed to change the direction of the solar panel according to the position of the sun in order to compensate for the disadvantages of the fixed solar power generation device. indicate

The sun tracking method of the solar tracking device according to the prior art is largely divided into program tracking and sensor tracking. Program tracking is a method of tracking the sun according to a preset program. In addition, the sensor tracking is a method of tracking a place with the highest amount of incident light using an optical sensor.

However, since the solar tracking device is a two-axis rotation type, two driving devices are installed for each solar cell module, so when a large-scale solar cell module is installed in a certain area, there is a problem in that the initial installation cost is excessively increased.

In addition, there is a problem in that the driving device for rotating each solar cell module is huge and complicated, and thus easily breaks down, and thus maintenance work is cumbersome and the cost is increased.

An object of the present invention is to provide a solar tracking device in which a solar power module can rotate two axes with one driving means in response to a change in the position of the sun.

An object of the present invention is to provide a solar tracking device that guarantees the certainty of operation and can rotate all of the plurality of solar power modules simultaneously with one driving means.

An object of the present invention is to provide a solar tracking device capable of simplifying a structure for tracking a change in the position of the sun.

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

According to an aspect of the present invention, the first and second support frames spaced apart from each other in a first axial direction, the rotating shaft is rotatable about the first axis; a solar cell module installed on the rotating shaft so as to be rotatable about a second axis orthogonal to the first axis; a first moving member for rotating the rotating shaft about the first axis; And to provide a solar tracking device comprising a second movement member for rotating the solar cell module about the second axis on the rotation axis.

In addition, the second movement member includes a straight cam having a cam surface connecting the concave point and the convex point, and horizontally reciprocating in the second axis direction on the first support frame; and an axis slider installed on the rotation shaft and horizontally reciprocating in the first axis direction while alternately sliding the cam surface by the reciprocating motion of the linear cam, wherein the solar cell module is a module housing in which a solar panel is installed ; and a support shaft supporting the module housing and having a hinge shaft coupled to the rotation shaft and a coupling pin coupled to the shaft slider.

In addition, the shaft slider may have a pin hole into which the coupling pin is fitted.

In addition, the rotation shaft may further include a bearing member having a shaft support groove to which the hinge shaft is coupled.

In addition, the bearing member may be provided integrally with the rotation shaft.

In addition, the bearing member may include a body bent in a ring shape to surround the rotation shaft; and a hinge bracket which is formed to protrude vertically from both ends of the body and has the shaft support groove.

In addition, a plurality of solar cell modules may be installed on the rotation shaft at predetermined intervals.

Also, the first moving member and the second moving member may be independently operated by different driving devices.

In addition, the first moving member and the second moving member may be operated in conjunction with a single driving device.

In addition, the rotation shaft further includes a shaft pin positioned on the first support frame and formed to protrude from a lower end of the rotation shaft, and the first moving member is moved in the second shaft direction on the first support frame by the single driving device. a horizontally reciprocating slider member; and a pin fixing bracket installed on the slider member and into which the shaft pin is fitted.

In addition, the second movement member is installed on the slider member, has a cam surface connecting the concave point and the convex point, and horizontally reciprocates in the second axis direction by the movement of the slider member on the first support frame. straight cam; and an axis slider installed on the rotation shaft and horizontally reciprocating in the first axis direction while alternately sliding the cam surface by the reciprocating motion of the linear cam, wherein the solar cell module is a module housing in which a solar panel is installed ; and a support shaft supporting the module housing and having a hinge shaft coupled to the rotation shaft and a coupling pin coupled to the shaft slider.

In addition, a plurality of the rotation shafts are provided at predetermined intervals on the first and second support frames along the second axis direction, and each of the rotation shafts may be rotated about the first shaft by the first moving member.

In addition, a plurality of solar cell modules may be installed at predetermined intervals on the rotation shaft along the first axis direction.

According to an embodiment of the present invention, two-axis rotation of the photovoltaic module is possible by one driving means, and the entire plurality of photovoltaic modules can be rotated by one driving means, so that installation cost and maintenance Economical effects can be expected in terms of management costs.

According to the embodiment of the present invention, the structure is simple and maintenance is easy.

According to an embodiment of the present invention, it is possible to reduce the weight with a single cell.

Effects of the invention are not limited to the above-described effects, and effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and accompanying drawings.

1 is a perspective view for explaining a solar tracking device according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a mounting structure of a solar cell module in the solar tracking device shown in FIG. 1 .
3 is a view showing a rotation operation of a solar cell module.
4 and 5 are views for explaining the solar cell module and the second moving member.
6 is a view showing a solar tracking device according to a first modification of the present invention.
7 and 8 are views showing another embodiment of the first moving member and the second moving member.
9 is a view showing a first axial rotation operation of the rotation shaft.
10 to 12 are views showing a solar tracking device according to another embodiment.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers regardless of the reference numerals, and duplicates thereof A description will be omitted.

Figure 1 is a perspective view for explaining a solar tracking device according to a first embodiment of the present invention, Figure 2 is an exploded perspective view showing the mounting structure of the solar cell module in the solar tracking device shown in Figure 1, Figure 3 is a view showing a rotation operation of the solar cell module, and FIGS. 4 and 5 are views for explaining the solar cell module and the second moving member.

1 to 3 , the solar tracking device 10 includes a rotation shaft 100 , a solar cell module 200 , a first motion member 300 , a second motion member 400 and a driving unit 500 . may include

In the first embodiment, the driving unit 500 may include first and second driving devices 510 and 520 that operate independently of each other. That is, the first moving member 300 and the second moving member 400 may be independently operated by different first and second driving devices 510 and 520 .

The rotating shaft 100 may be installed in the first axial direction (X) on the first and second support frames 20 and 30 spaced apart from each other. The rotating shaft 100 has both ends to be rotatably supported by the first and second support frames 20 and 30, respectively. A bearing (not shown) may be provided in the region. The rotating shaft 100 may be provided in the form of an empty pipe. The rotation shaft 100 may be located at a predetermined height from the ground.

In this embodiment, although the rotation shaft 100 is illustrated as being installed horizontally with the ground, it is not limited thereto and may be changed depending on the installation location.

The first support frame 20 and the second support frame 30 may have a structure that sufficiently supports a load such as the rotation shaft 100 and has sufficient resistance to external force, of which the first support frame 20 has an internal It may be provided in the form of having a storage space (22). The accommodation space 22 may be used as a space in which a driving unit 500 for operating the first and second movement members, a controller for controlling rotation and tilting of the solar cell module, and the like are accommodated. Although not shown, by providing a cover on one side of the first support frame 20 , maintenance and management of devices installed in the storage space 22 may be facilitated.

The first movement member 300 rotates the rotation shaft 100 about the first axis (X). The first moving member 300 may rotate the rotating shaft 100 within a predetermined angular range by the first driving device 510 of the driving unit 500 . Of course, various methods such as a motor and a gear may be applied to the first moving member 300 for rotating the rotating shaft 100 .

The solar cell module 200 may be installed on the rotation shaft 100 so as to be rotatable about the second axis Y orthogonal to the first axis X.

The solar cell module 200 may include a module housing 210 and a support shaft 220 . A solar cell 280 may be installed in the module housing 210 . The support shaft 220 supports the module housing 210 . The support shaft 220 may include a hinge shaft 222 and a coupling pin 224 .

4 and 5 show the mounting structure of the support shaft 220 in detail. Referring to this, the hinge shaft 222 of the support shaft 220 may be coupled to the rotation shaft 100 , and the coupling pin 224 may be coupled to the shaft slider 410 installed on the rotation shaft 100 .

The second movement member 400 is provided to rotate the solar cell module 200 about the second axis Y on the rotation axis 100 . As an example, the second movement member 400 may include a shaft slider 410 that is installed on the rotation shaft 100 and horizontally reciprocates in the first axis direction by the second driving device 520 of the driving unit 500 . have. The shaft slider 410 may include a pin hole 412 into which the coupling pin 224 is fitted. One end of the shaft slider 410 may extend to one end of the rotation shaft 100 and be positioned in the receiving space 22 of the first support frame 20 .

On the other hand, the rotating shaft 100 has a bearing member 150 having a shaft support groove 158 to which the hinge shaft 222 is coupled. The bearing member 150 is formed to protrude vertically from both ends of the body 152 and the body 152 bent in a ring shape so as to surround the rotation shaft 100 and a hinge bracket 154 having a shaft support groove 158. may include

In this embodiment, the bearing member 150 is illustrated as being provided as a separate configuration from the rotation shaft 100, but is not limited thereto, and the bearing member 150 may be provided integrally with the rotation shaft 100 as well. Of course.

As shown in FIG. 3 , when the shaft slider 410 is moved in the left direction, the support shaft 220 is rotated in the right direction based on the hinge shaft 222 , and on the contrary, when the shaft slider 410 is moved in the right direction, , the support shaft 220 is rotated in the left direction with respect to the hinge shaft 222 .

Therefore, it is possible to track sunlight while rotating the solar cell module 200 in the east-west direction according to the change in the position of the sun through the horizontal reciprocating operation of the axis slider 410 .

6 is a view showing a solar tracking device 10a according to a first modification of the present invention, the solar tracking device 10a is a plurality of solar cell modules 200 at predetermined intervals on the rotation shaft 100. can be mounted

In this embodiment, three solar cell modules 200 are illustrated as being installed on the rotating shaft 100, but the present invention is not limited thereto, and the number of solar cell modules 200 depends on various factors such as installation area and environment. can be taken into account.

In the first modification, the three solar cell modules 200 may be rotated about the second axis Y by the horizontal reciprocating operation of the axis slider 410 described above.

7 and 8 are views showing another embodiment of the first moving member and the second moving member.

In another embodiment, the driving unit 500 includes a single driving device 501 , and the first moving member 300a and the second moving member 400a are operated in conjunction with a single driving device 501 . There is a characteristic.

7 and 8 , the first movement member 300a may include a slider member 310 and a pin fixing bracket 320 . The slider member 310 horizontally reciprocates in the second axis direction on the first support frame 20 by a single driving device 501 . The pin fixing bracket 320 is installed on the slider member 310 . A shaft pin 190 installed on the rotation shaft 100 is fitted to the pin fixing bracket 320 . The shaft pin 190 protrudes from the lower end of the rotation shaft 100 located in the receiving space 22 of the first support frame 20 and is fitted to the pin fixing bracket 320 .

9 is a view showing a first axial rotation operation of the rotation shaft. As in FIGS. 8 and 9 , when the slider member 310 is moved in the first direction A by a single driving device 501, the shaft pin As the 190 moves in the first direction (A) together with the pin fixing bracket 320, the rotation shaft 100 rotates in the second direction (B), and the slider member 310 moves in the second direction (B) on the contrary. ), the shaft pin 190 is moved together with the pin fixing bracket 320 in the second direction (B), and the rotating shaft 100 is rotated in the first direction (A).

Referring back to FIGS. 7 and 8 , the second moving member 400a includes a straight cam 420 and a shaft slider 410 , and the shaft slider 410 is omitted because it has been described in detail in the first embodiment.

The straight cam 420 may be installed on the slider member 310 . The straight cam 420 has a cam surface 422 connecting the concave point and the convex point, and is horizontally reciprocated in the second axis direction by the movement of the slider member 310 on the first support frame 20 .

The shaft slider 410 may further include a support portion 416 in contact with the cam surface 422 . The shaft slider 410 horizontally reciprocates in the first axial direction while the support 416 alternately slides the cam surface 422 by the reciprocating motion of the linear cam 420 . Although not shown, a spring providing elastic force may be provided on the other side of the shaft slider 410 so that the support part 416 elastically slides on the cam surface 4220 of the straight cam 420 .

The single driving device 501 is for linearly moving the slider member 310 and may include a motor 502 and a lead screw 503 operated by driving the motor, and the lead screw 503 is the slider member ( 310 , the slider member 310 may be moved forward/backward by a rotation operation. In the present embodiment, a single driving device of a screw type linear driving method has been described, but the present invention is not limited thereto, and various linear driving methods may be applied. The single driving device 501 may be driven by a controller (not shown) with a period of a predetermined time based on time data for the sunrise and sunset times of the sun. The slider member 310 is moved at a predetermined interval by a single driving device 501 at a predetermined time period, and the solar cell module 200a is rotated at a predetermined angle at a predetermined time period in the east-west direction to track sunlight.

On the other hand, the single driving device 501 reversely rotates the lead screw to move the slider member 310 when a set time (eg, solar power generation time, that is, the time when the sun rises in the east and sets in the west during the day) elapses. It can be returned to its initial position.

10 to 12 are views showing a solar tracking device according to another embodiment.

10 to 12 , in the solar tracking device 10b according to another embodiment, the solar cell module 200 is disposed in an array form. The solar tracking device 10b includes three rotation shafts 100 that are spaced apart from each other and arranged in parallel with each other, and three solar cell modules 200 that are spaced apart from each other on the three rotation shafts 100 . The three rotation shafts 100 are installed in the first axial direction (X) on the first and second support frames 20 and 30 spaced apart from each other.

In the present embodiment, the number of solar cell modules 200 and the number of rotation shafts 100 are not limited thereto, and the number installed in consideration of various factors such as an installation area and environment may be freely changed.

12, the single driving device 501 of the driving unit 500b moves the slider member 310 in a straight line, and the slider member 310 is provided with a pin fixing bracket 320 into which the shaft pins of each of the rotation shafts are fitted. . In addition, the slider member 310 is provided with three straight cams 420 to immediately drive the shaft slider installed on each of the rotation shafts.

As described above, the solar tracking device 10b according to the present invention can be implemented such that three rotation axes 100 and nine solar cell modules 200 are rotated simultaneously in two axes using one driving device 501 . have.

In addition, the solar tracking device 10b according to the present invention improves power efficiency by simultaneously controlling the position of a plurality of solar cell modules in response to a change in the position of the sun, and the time and cost can be reduced.

On the other hand, the solar tracking device of the present invention can be manufactured by calculating the cam surface of the straight cam or the rotation angle of the rotating shaft according to the latitude and longitude of the place to be installed.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: axis of rotation 200: solar cell module
300: first movement member 400: second movement member
500: drive unit

Claims (13)

a rotation shaft which is installed in the first and second support frames spaced apart from each other in the first axis direction and is rotatable about the first axis;
a solar cell module installed on the rotating shaft to be rotatable about a second axis orthogonal to the first axis;
a first moving member for rotating the rotating shaft about the first axis; and
a second movement member configured to rotate the solar cell module about the second axis on the rotation axis;
The first moving member and the second moving member are operated in conjunction with a single driving device,
The rotation axis is
It is positioned on the first support frame and further comprises a shaft pin formed to protrude from the lower end of the rotation shaft,
The first moving member is
a slider member horizontally reciprocating in the second axial direction on the first supporting frame by the single driving device; and
and a pin fixing bracket installed on the slider member and into which the shaft pin is fitted,
The second moving member is
a linear cam installed on the slider member, having a cam surface connecting the concave point and the convex point, and horizontally reciprocating in the second axis direction by the movement of the slider member on the first support frame; and
a shaft slider installed on the rotary shaft and horizontally reciprocating in the first shaft direction while alternately sliding the cam surface by the reciprocating motion of the linear cam;
The solar cell module is
module housing in which solar panels are installed; and
Solar tracking device including a support shaft supporting the module housing and having a hinge shaft coupled to the rotation shaft and a coupling pin coupled to the shaft slider. delete The method of claim 1,
The second moving member is
Further comprising a spring providing an elastic force so that the shaft slider elastically slides on the cam surface of the straight cam,
The axis slider is
Solar tracking device having a pin hole into which the coupling pin is fitted. The method of claim 1,
The rotation axis is
Solar tracking device further comprising a bearing member having a shaft support groove to which the hinge shaft is coupled. 5. The method of claim 4,
The bearing member is
Solar tracking device provided integrally with the rotation shaft. 5. The method of claim 4,
The bearing member is
a body bent in a ring shape to surround the rotation shaft; and
Solar tracking device including a hinge bracket that is formed to protrude vertically from both ends of the body and having the shaft support groove. The method of claim 1,
The solar cell module is
A solar tracking device in which a plurality are installed at predetermined intervals on the rotation shaft. delete delete delete delete The method of claim 1,
The rotation axis is
A plurality of the first and second support frames are installed at predetermined intervals along the second axis direction,
Each of the rotation axis is a solar tracking device that is rotated about the first axis by the first movement member. 13. The method of claim 12,
The solar cell module is
A solar tracking device in which a plurality are installed at predetermined intervals on the rotation axis along the first axis direction.

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