KR101173670B1 - Photovoltaic array system - Google Patents

Abstract

The present invention can be used in large-scale photovoltaic power generation equipment and a device that can move the solar panel along the movement trajectory of the sun that changes during the day so that the solar light is incident on the solar panel at an optimal angle, while having a simple structure It starts.
The photovoltaic device of the present invention, the rotation axis is coupled to the pillar, the support frame is coupled to the rotation shaft, the solar panel is coupled to the support frame, the drive source, the drive member moved by the drive source, coupled to the drive member and the non-linear guide groove is And a non-linear guide member provided, and a rotary link coupled to the non-linear guide member and the rotating shaft to be guided and moved by the non-linear guide member.

Description

Photovoltaic device {Photovoltaic array system}

The present invention relates to a photovoltaic device, and more particularly, it can be used in large-scale photovoltaic power generation equipment and made of a simple structure of the sun that changes during the day so that the solar light is incident on the solar panel at an optimal angle. The present invention relates to a device that can move a solar panel along a movement trajectory.

In solar cells, charge separation between + and-occurs when visible and near-infrared rays, which are near the band gap energy value of silicon, are incident on the silicon solar panel surface and reach near the boundary of the PN layer. It is a device that has the principle of producing electrical energy by extracting these charges to the outside of the solar panel.

In particular, crystalline silicon solar cells are known to produce maximum power when sunlight is incident perpendicularly to the solar panel surface.

Therefore, the photovoltaic device is applied to a solar tracking device that can move the solar panel in a direction perpendicular to the sun rays at all times.

Such a solar tracking device is disclosed in US Pat. No. 6,058,930. The main contents disclosed in the above publication will be described with reference to FIG. 14 as follows.

The conventional solar tracking device includes a support frame 103 and a support frame 103 including pillars 101 standing on the ground, a hinge portion 103a hinged to a center portion of the pillars 101. The solar panel 105 is coupled to, and the rotary link 107 is coupled to one end of the hinge portion 103a of the support frame 103. The other end of the rotary link 107 described above is hinged to the driving member 109 moving in the direction of the arrow (or the direction opposite to the arrow) by a driving source (not shown).

In the conventional solar tracking device, when the driving member 109 moves in the direction of the arrow (or the opposite direction of the arrow), the rotary link 107 moves to the right (refer to FIG. 14, the left side when moving in the direction opposite the arrow).

As the rotary link 107 moves, the support frame 103 rotates about the hinge portion 103a. Therefore, the solar panel 105 also rotates about the hinge portion 103a. Accordingly, as the position of the sun changes, the direction of the solar panel 105 is changed to achieve the optimal angle between the solar beam and the solar panel.

Since such a solar tracking device should have a durability that can be used continuously for a long time of 20 to 30 years, it is preferable that the solar tracking device is made of a simple structure free of failures if possible.

However, in the conventional solar tracking device, when the rotary link 107 is rotated, the driving member 109 moves up and down by a distance D when passing the ends P1, P2, and P3 of the rotary link 107. There is a problem that mechanical fatigue is increased and durability is poor.

In addition, in order to compensate for the driving member 109 moving up and down, it is necessary to install a separate fatigue buffer supplement to the drive motor portion, there is a problem that the structure may be complicated and cause a failure.

Particularly, when the driving member 109 is moved at a constant speed by constantly controlling the driving source, the displacement of the y-axis is sharply increased at a position adjacent to the P1 and P2 points of the rotary link 107, so that the solar panel 105 is also suddenly increased. There is a problem that the stability is lowered to rotate.

Therefore, the present invention has been proposed to solve the above problems, the object of the present invention is to smoothly move the drive member and the rotary link to reduce mechanical fatigue, made of a simple configuration to reduce the failure to improve durability To provide a photovoltaic device.

Still another object of the present invention is to provide a photovoltaic device that can increase stability by preventing the rotating link from rotating rapidly when the driving member is moved at a constant speed.

In order to achieve the object as described above, the present invention, the rotating shaft coupled to the pillar, the support frame coupled to the rotating shaft, the solar panel coupled to the support frame, the drive source, the drive member moved by the drive source, the drive A non-linear guide member coupled to a member and provided with a non-linear guide groove, and a rotation link coupled to the non-linear guide member and the rotating shaft and guided and moved by the non-linear guide member.

The rotary link is preferably coupled to the rolling member guided to the non-linear guide groove provided in the non-linear guide member at one end.

The non-linear guide groove provided in the non-linear guide member is preferably formed in a round shape inclined outward from the center toward the top when viewed from the bottom.

Preferably, the nonlinear guide grooves are symmetrical to each other.

When the non-linear guide groove is a distance corresponding to the length (height) of the guide groove and a distance corresponding to the width (width) of the guide groove is b, the ratio of a and b (b / a) is 27.5. Preferably in the range of 39.7%.

Rotation axis coupled to the pillar is preferably arranged vertically or horizontally with respect to the pillar.

The photovoltaic device is preferably provided with an angle adjusting device for varying the position by adjusting the angle of the solar panel toward the position of the sun changing seasonally.

The angle adjusting device includes an angle holding member coupled to the pillars and provided with a plurality of fitting grooves, and an adjustment lever coupled to the rotating shaft and provided with a locking part that can be inserted into the fitting grooves of the angle holding member. desirable.

Preferably, the adjustment lever includes a first adjustment lever coupled to the rotation axis in a radial direction, and a second adjustment lever hinged to the first adjustment lever and provided with the engaging portion.

The angle adjusting device is a connection link coupled to the rotary shaft, a drive source coupled to the connection link, a screw member connected to the connection link to rotate by the drive source, connected to the screw member and the support frame of the screw member It is preferable to include a moving member moving in accordance with the rotation.

The present invention has the effect of improving durability by reducing the mechanical fatigue and failure made of a simple configuration.

In addition, the present invention has the effect of increasing the stability by preventing the rotating link is rapidly rotated when the drive member is moved at a constant speed.

1 is a perspective view showing a part of a photovoltaic device for explaining a first embodiment of the present invention.
FIG. 2 is a diagram illustrating details of main parts of FIG. 1. FIG.
3 to 5 are diagrams for explaining the operation of the embodiment of the present invention.
FIG. 6 is a diagram showing a ratio of a to b according to a change in angle θ when a height displacement from P1 to P2 is a and a horizontal displacement from P1 to P2 is b based on FIG. 3.
7 is a front view for explaining a second embodiment of the present invention.
Fig. 8 is a plan view of Fig. 7. Fig.
9 is a view for explaining the operation of the second embodiment of the present invention.
10 is a view for explaining another example of the second embodiment of the present invention.
FIG. 11 is a view showing details of main parts of FIG. 10.
12 is a view for explaining still another example of the second embodiment of the present invention.
FIG. 13 is a diagram illustrating details of main parts of FIG. 12. FIG.
14 is a view for explaining the prior art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view for explaining a first embodiment of the present invention, a part of the photovoltaic device.

The photovoltaic device includes a plurality of pillars 1, a rotation shaft 3 coupled to the pillars 1, a support frame 5 coupled to the rotation shaft 3, and a solar panel coupled to the support frame 5. 7), the drive source 9, the drive member 11 that is rotated by the drive source 9, the rotary link 13 is coupled to the drive member 11 and the support frame 5, coupled to the drive member 11 Non-linear guide member 15.

The plurality of pillars 1 are fixed on the ground at predetermined intervals and may be formed of concrete structures or steel structures. These pillars 1 are preferably made of a base structure on which the solar panel 7 can be installed.

In the embodiment of the present invention, the pillars 1 are not limited to the contents described in the drawings and all of the pillars or similar structures used for various purposes may be applied.

The rotating shaft 3 is preferably coupled to the upper portion of the pillar 1 described above. The plurality of rotation shafts 3 may be arranged in parallel with each other at regular intervals from each other.

The center portion of the support frame 5 is coupled to the rotation shaft 3 by a fixing clamp or the like. The solar panel 7 is coupled to the support frame 5. The solar panel 7 is an array in which modules for photovoltaic power generation are collected, and a conventional one can be applied.

The drive source 9 is for moving the drive member 11 in a linear direction. As the drive source 9, a linear module such as a conventional screw jack may be used. It is preferable that the drive source 9 can move the drive member 11 at a constant speed by controlling torque constantly. That is, the drive source 9 is preferably made to be able to move the drive member 11 at a constant speed without using a separate control device even if used for a long time.

The drive member 11 is preferably made of a simple structure without the need to install a separate power transmission member between the drive source 9 and the drive member 11 by moving in a straight line.

The driving member 11 may be made of a metal material in the form of a long bar. Nonlinear guide members 15 are coupled to the drive member 11 at regular intervals. And the rotary link 13 is coupled between the non-linear guide member 15 and the rotary shaft (3).

As shown in FIG. 2, the nonlinear guide member 15 may be fixed to the upper portion of the driving member 11 formed of a straight line by a fastening method such as welding. The nonlinear guide member 15 is made of a metal plate having a constant thickness, and the nonlinear guide grooves 17 and 19 are provided therein.

The nonlinear guide grooves 17 and 19 form a round shape by inclining outward from the center toward the upper direction with respect to the lower portion of the center portion (see FIG. 2). The non-linear guide grooves 17 and 19 are preferably symmetrical with each other in the center (represented by the symbol O in a straight line extending vertically through the center).

However, the non-linear guide grooves 17 and 19 described in the embodiment of the present invention are not limited to those having a symmetrical structure, but may be made of any one according to the moving range of the rotary link 13.

On the other hand, one end of the rotary link 13 is coupled to the rotary shaft (3). And the rolling member 21 is coupled to the other end surface of the rotary link (13). The rolling member 21 can move along the nonlinear guide grooves 17 and 19 described above. The rolling member 21 is preferably made of a bearing or a roller.

When described in detail the operation and operation of the present invention made as described above.

First, the process of maintaining the optimum angle of incidence by moving the solar panel 7 to face the sun which continues to change during the day. A control device (not shown) divides the position of the sun's orbit during the day by time to control the drive source 9. The drive source 9 preferably moves the drive member 11 in a straight line at the same speed as possible.

The drive member 11 is moved in the linear direction by the drive source 9.

3 is a view showing a state in which the rotary link 13 is located at the point P2, the center portion, and FIG. 4 is a state in which the rotary link 13 moves to the point P1 as the driving member 11 moves horizontally. 5 is a view illustrating a state in which the driving member 11 is moved to the point of the rotation link 13 P3 as the horizontal movement.

In each figure, when the rotary link 13 moves to each of the P1, P2, and P3 points, the direction of the solar panel 7 also changes.

First, when the driving member 11 moves in the dotted line arrow direction, as shown in FIG. 3, the driving link 11 moves to the P1 point while the rotary link 13 is at the P2 point. At this time, the rolling member 21 is moved along the nonlinear guide groove 17. When the rolling member 21 moves along the nonlinear guide groove 17, one end of the rotary link 13 moves to the point P1 (shown in FIG. 4).

When the driving member 11 moves at a constant speed, the rolling member 21 is guided and moved along the nonlinear guide groove 17 so that the rolling member 21 does not suddenly move at a specific position. Therefore, the solar panel 7 moving in conjunction with the rotary link 13 is also prevented from being rapidly rotated at a specific point (particularly, one end of the rotary link is adjacent to the P1 point). Therefore, the photovoltaic device according to the embodiment of the present invention can be stably operated while improving the durability.

 If one end of the rotary link 13 moves from the point P2 to the point P3 (when moving from the state of FIG. 3 to the state of FIG. 5), the rolling member is guided and moved to the nonlinear guide groove 19. Even in this case, as in the above description, even when the driving member 11 moves at a constant speed, the rolling member 21 is guided to the nonlinear guide groove 19, so that a specific point (particularly, one end of the rotary link is adjacent to the P3 point) is described. It is possible to prevent the rapid movement or change in the.

 6 arbitrarily determines the length of the rotary link 13, a distance of projecting the non-linear guide groove 19 in the horizontal direction based on FIG. 3 is a, and projects the non-linear guide groove 19 in the vertical direction. When one distance is b, it is a chart which shows the ratio (b / a) of a and b according to the change of the angle (theta) of the rotary link 13.

According to the diagram of FIG. 6, the angle of the rotating link is in a range that can be substantially applied at about 45 to 65 degrees, and in the embodiment of the present invention, the ratio of a to b (b / a) is 27.5% to 39.7%. desirable. In the embodiment of the present invention, the rotation link may be smoothly rotated only within the range of the above-described ratio.

FIG. 7 is a front view illustrating a second embodiment of the present invention, and FIG. 8 is a plan view of FIG. 7, illustrating an example photovoltaic device applied to a structure in which a solar panel may be rotated in place.

Compared to the above-described embodiment, the second embodiment of the present invention will replace the same parts with the description of the above-described embodiment, and only different points will be described.

In the first embodiment of the present invention has been described by showing an example in which the rotation axis is arranged at a right angle to the pillar, the second embodiment of the present invention is different in that the direction of the pillar and the direction of the rotation shaft are arranged the same. .

Therefore, in the first embodiment of the present invention, the non-linear guide member having a plate shape is vertically arranged, but in the second embodiment of the present invention, it is arranged horizontally.

That is, referring to FIG. 9, when the driving member 11 moves in a straight direction (arrow direction), the rolling member 21 connected to the rotary link 13 sequentially guides the nonlinear guide grooves 17 and 19. Is moved. Accordingly, the solar panel 7 rotates while the rotary shaft 13 rotates while the rotary link 13 rotates. At this time, the operation and effect of the second embodiment of the present invention is the same as the above-described example.

FIG. 10 is a view showing an example of the angle adjusting device 51 for changing the position by adjusting the angle of the solar panel 7 toward the position of the sun which changes seasonally in the case of the second embodiment of the present invention. FIG. 11 is a view showing details of main parts of FIG. 10.

Angle adjusting device 51 is coupled to the pillars (1) and the angle holding member 53 is provided with a plurality of fitting grooves (53a), and is arranged at right angles to the rotating shaft (3) of the sun that changes according to the season It includes an adjustment lever 57 is coupled to the seasonal rotating shaft 52 for tracking the position and provided with a locking portion 55 that can be inserted into the fitting grooves 53a of the angle maintaining member 53.

And the adjustment lever 57 is hinged to the first adjustment lever 59, the first adjustment lever 59, which is coupled in a radial direction to the seasonal rotating shaft 52 (axis used to perform the season tracking), the locking portion 55 ) Is provided with a second adjustment lever 61.

In some cases, a knob may be provided on the second adjustment lever 61 for the operator to conveniently work.

The first adjustment lever 59 may be coupled to the seasonal rotation shaft 52 by welding or the like in the radial direction. The first adjustment lever 59 may be formed of a square pipe provided in the space therein. At least one of the first adjustment levers 59 may be installed to correspond to one module of the solar panel 7 having a different posture.

That is, the first adjustment lever 59 may rotate in the same direction as the seasonal rotation shaft 52. Typically, since the seasonal rotary shaft 52 is installed in the horizontal direction, the direction in which the first adjustment lever 59 rotates is determined in the vertical direction. However, it means that the first adjustment lever 59 does not need to rotate in the completely vertical direction, but can rotate together with the seasonal rotating shaft 52 in the approximately vertical direction.

The second adjustment lever 61 is hinged to be rotatable in a direction substantially perpendicular to the rotation direction of the first adjustment lever 59. That is, the direction in which the second adjustment lever 61 rotates is determined in the horizontal direction. As described in the above-described example, the horizontal direction means to rotate in some section in the substantially horizontal direction.

The second adjustment lever 61 preferably has a thickness or width that can be rotated to some extent in the space provided inside the first adjustment lever 59. That is, it is preferable that the second adjustment lever 61 is inserted into the end of the first adjustment lever 59 so that the hinge pins are coupled in the vertical direction (see FIG. 11). Accordingly, the second adjustment lever 61 may rotate in some section in the horizontal direction with respect to the first adjustment lever 59.

And as shown in FIG. 11, the 2nd adjustment lever 61 is provided with the locking part 55 which protrudes in a horizontal direction. The locking part 55 may be fixed by fastening a member such as a bolt by welding or threading.

Referring to the operation of the embodiment of the present invention made as described above are as follows.

If the position of the sun changes as the season changes and it is necessary to adjust the angle of the solar panel 7 facing the sun, the operator grasps the knob and applies a force in the horizontal direction. Then, the locking portion 55 provided on the second adjustment lever 61 is separated from the fitting groove 53a.

Then continue to apply downward pressure with the operator holding the knob. Then, as the seasonal rotating shaft 52 rotates, the solar panel 7 fixed to the seasonal rotating shaft 52 also rotates to change the angle formed with the sun.

When the angle of the solar panel is changed to the desired position, the operator rotates the knob in the horizontal direction to maintain the posture so that the locking portion 55 is inserted into the other fitting groove (53a). Then, the locking part 55 may be inserted into another fitting groove 53a and the solar panel 7 may also maintain a fixed posture.

Particularly, when the fitting grooves 53a are manufactured according to the four seasons and their positions are marked, the seasons are easily tracked by the worker simply inserting the locking portion 55 into the fitting groove 53a in which the corresponding season is displayed. ) Can do the job.

In addition, the embodiment of the present invention is simple in structure, easy to operate and reduce manufacturing cost, and can have durability to meet the requirements of use without failure for a long time.

Another example of the angle adjusting device of the second embodiment of the present invention will be described with reference to FIGS. 12 and 13.

Another example angle adjusting device 101 of the present invention, as shown in Figures 12 and 13, the connection link 103, the drive source 105, the screw member 107, and the moving member 109 Include.

The connecting link 103 is hinged to the seasonal rotating shaft 52. And the end of the connection link 103 is provided with a groove 103a through which the screw member 107 can pass. The driving source 105 is coupled to the connection link 103 by a fastening means.

The drive source 105 is preferably made of a motor or the like. And the drive source is provided with a power transmission gear 111 to the rotating shaft. On the other hand, it is preferable that the driving source 105 is electrically connected to a control unit (not shown) to be controlled according to the control of the control unit.

Screw member 107 is provided with a threaded outer peripheral surface. In addition, the screw member 107 is provided with another power transmission gear 113 that is engaged with the power transmission gear 111 described above to receive power. Therefore, the power of the drive source 105 is transmitted to the screw member 107 through these power transmission gears (111).

The screw member 107 is coupled to the movable member 109 so that relative movement is possible. That is, the moving member 109 is provided with screw grooves on the inner circumferential surface and the screw member 107 can be moved along the screw groove. One end of the moving member 109 is coupled to the support frame (5).

The angle adjusting device 101 made in this way needs to change the position by rotating the solar panel 7 according to the change of the season. The process of changing the angle of the solar panel 7 so as to face the sun whose position changes with the season is as follows.

When the driving source 105 is driven by the control of a control unit (not shown), the power of the driving source 105 rotates the screw member 107 through the power transmission gears 111 and 113. Then, the screw member 107 moves relative to the moving member 109 while being moved along the screw groove of the moving member 109. Therefore, as the movable member 109 is moved, the seasonal rotating shaft 52 is rotated, and accordingly, the solar panel 7 is also rotated to face the sun where the position is changed by season.

The movement structure of the solar panel 7 according to the season of the second embodiment of the present invention is another example that can automatically track the sun as compared to the above-described example and automatically determines the angle between the sun and the solar panel 7. There is an advantage that can be optimized.

1. Column 3. Rotating shaft
5. Support frame 7. Solar panel
9. Driving source 11. Driving member
13. Rotary link 15. Nonlinear guide member
17, 19. Non-linear guide groove 21. Cloud member
51. Angle adjusting device 52. Seasonal rotating shaft
53. Angle holding member 55. Hanging part
57. Adjustment member 59. First adjustment lever
61. 2nd adjusting lever 101. Angle adjusting device
103. Connecting link 107. Screw member
109. Moving member 111,113. Power transmission gear

Claims (10)

A rotating shaft coupled to the pillars fixed to the ground,
A support frame coupled to the rotating shaft,
A solar panel coupled to the support frame,
Power Source,
A drive member moved by the drive source,
A nonlinear guide member coupled to the drive member and provided with a nonlinear guide groove, and
A rotary link coupled to the nonlinear guide member and the rotational shaft and guided and moved by the nonlinear guide member,
The nonlinear guide groove provided in the nonlinear guide member
When viewed from the bottom, the solar cell apparatus is formed in a round shape inclined outward from the center toward the top. The method according to claim 1,
The rotary link
A photovoltaic device having a cloud member coupled to the nonlinear guide groove provided at one end of the nonlinear guide member. delete The method according to claim 1,
The nonlinear guide groove
Photovoltaic device that is symmetrical with each other about the center. The method of claim 4,
The nonlinear guide groove
When the distance projected in the horizontal direction of the guide groove is a and the distance projected in the longitudinal direction of the guide groove is b,
A photovoltaic device comprising a ratio of a to b (b / a) in the range of 27.5 to 39.7%. The method according to claim 1,
Rotating shaft coupled to the pillar
Photovoltaic device disposed vertically or horizontally with respect to the pillar. A rotating shaft coupled to the pillars fixed to the ground,
A support frame coupled to the rotating shaft,
A solar panel coupled to the support frame,
Power Source,
A drive member moved by the drive source,
A nonlinear guide member coupled to the drive member and provided with a nonlinear guide groove;
A rotary link coupled to the nonlinear guide member and the rotating shaft and guided and moved by the nonlinear guide member;
It includes an angle adjusting device for varying the position by adjusting the angle of the solar panel toward the position of the sun changing seasonally,
The angle adjusting device
An angle maintaining member coupled to the pillars and provided with a plurality of fitting grooves;
The control lever coupled to the rotating shaft and provided with a locking portion that can be inserted into the fitting grooves of the angle maintaining member
Photovoltaic device comprising a. delete The method of claim 7,
The adjustment lever
A first adjustment lever coupled to the rotation axis in a radial direction,
A second adjustment lever hinged to the first adjustment lever and provided with the engaging portion;
Photovoltaic device comprising a. A rotating shaft coupled to the pillars fixed to the ground,
A support frame coupled to the rotating shaft,
A solar panel coupled to the support frame,
Power Source,
A drive member moved by the drive source,
A nonlinear guide member coupled to the drive member and provided with a nonlinear guide groove;
A rotary link coupled to the nonlinear guide member and the rotating shaft and guided and moved by the nonlinear guide member;
It includes an angle adjusting device for varying the position by adjusting the angle of the solar panel toward the position of the sun changing seasonally,
The angle adjusting device
A connecting link coupled to the rotating shaft;
A driving source coupled to the connection link,
A screw member connected to the connection link and rotating by the driving source,
A moving member connected to the screw member and the support frame and moving according to the rotation of the screw member;
Photovoltaic device comprising a.

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