JP2013187531A - Solar cell panel support device and solar power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce influences of a wind pressure on a solar cell panel.SOLUTION: When a solar cell panel 1 is installed, the panel is usually installed so as to form a predetermined inclined angle for achieving good generation efficiency. Thus, influences of a wind pressure become large. If the solar cell panel 1 is arranged in parallel with a direction that wind blows, the wind pressure is significantly reduced. Hence, the solar cell panel is rotated around a supporting point (axis) 4. Further, a damper 6 is included for controlling vibrations against the wind pressure.

Description

  The present invention relates to a solar cell panel support device and a solar power generation device.

  A conventional solar cell panel support device is a method of fixing to a gantry or an installation base. In order to efficiently discharge rainwater, the solar cell panel has an inclination of 10 degrees or more in front of the sun (solar cell panel surface). Because of this inclination, lift is generated in the solar cell panel by the wind hitting the back surface of the solar cell panel. When installing a solar cell panel on the roof of a house, the wind hitting the back surface is difficult to enter, so there are certain restrictions on the installation of the solar cell panel. Moreover, when installing a solar cell panel independently, it is necessary to set the intensity | strength of a mount frame or an installation stand in consideration of this lift.

  The technique described in Patent Document 1 rotates a solar cell module plate around a rotation axis when strong winds are generated. The wind is designed to blow from the direction opposite to the rotation axis with respect to the module center. In addition, a plurality of modules are installed on the mounting frame.

  The technique described in Patent Document 2 rotates the solar cell panel by wind, but the rotation axis is at the center and is not intended to take measures against wind pressure.

  The technique described in Patent Document 3 is a pedestal that does not require a foundation for a pedestal of a solar cell panel and does not require a surrounding frame material, but does not reduce wind pressure.

  The technology described in Patent Document 4 is a pedestal that fixes a solar cell panel and additionally installs an airflow control plate in a lower part of the panel to utilize the characteristics of wind and reduce lift.

Japanese Utility Model Publication No. 52-53674 Japanese Utility Model Publication No. 61-125062 JP 2003-69062 A JP 2011-911166 A

If the area of one solar cell panel becomes about 1 square meter with respect to the wind pressure which acts at the time of installation of a solar cell panel now, it will become a subject which cannot be disregarded. Especially in areas where typhoons pass, such as in Western Japan, it is necessary to make a base or foundation in consideration of the wind power when the typhoon passes. For this reason, it is manufactured with a strength several times that of normal wind power. Naturally, this is a problem that requires many times more cost.
On the other hand, looking at the structure of the solar panel itself, the panel is configured by fixing several solar cell modules. Since the area is about 1 square meter, it has a sturdy frame on all sides to fix this panel. Therefore, there is a problem that the cost of the solar cell panel is increased.

  The technique described in Patent Document 1 reduces the wind pressure by changing the angle of the module with respect to the wind, and is effective as a countermeasure against strong winds. However, this technique is not for wind lift. Furthermore, there is no way to keep the normal module. In addition, since a plurality of modules are attached to the attachment frame, the structure and the mechanism of current collection (power transmission) are complicated.

  In the techniques described in Patent Document 2, Patent Document 3, and Patent Document 4, the solar cell panel is fixed, and wind pressure is applied in proportion to the square of the wind speed. It is necessary to take strong measures in the foundation in proportion to the designed wind pressure.

  An object of this invention is to provide the solar cell panel support apparatus and solar power generation device which reduce a wind pressure.

  The solar cell panel support device according to the first invention that meets the above-described object is a solar cell panel support device that supports a solar cell panel on which one side is arranged higher than the other side and to which a power transmission cable is connected. A connecting portion that rotatably connects one side of the solar cell panel about a substantially horizontal axis (fulcrum), and a control unit that controls to suppress vibration of the solar cell panel caused by wind pressure, Is provided.

  In the solar cell panel support device according to the first invention, the control unit may be a damper whose one end is fixed to the solar cell panel or a torsion spring that generates a restoring force around the horizontal axis.

  In the solar cell panel support device according to the first invention, the control unit may be a damper.

  In the solar cell panel support device according to the first invention, the control unit may be an elastic body.

  In the solar cell panel support device according to the first invention, it is preferable that the power transmission cable is wired along the horizontal axis (fulcrum).

  In the solar cell panel support device according to the first aspect of the present invention, it is preferable to further include an impact absorbing material that absorbs an impact when the solar cell panel comes into contact.

  The solar power generation device according to the second invention that meets the above object includes a solar cell panel that is disposed at a position where one side is higher than the other side, and a support that supports the solar cell panel. In the photovoltaic device, the support member suppresses vibration of the solar cell panel generated by wind pressure and a connecting portion that rotatably connects one side of the solar cell panel around a substantially horizontal axis (fulcrum). And a control unit for controlling as described above.

  In the solar power generation device according to the second invention, the solar cell panel is a stabilizing member for stabilizing the solar cell panel by an airflow flowing along a surface opposite to the light receiving surface of the solar cell panel. You may have.

  In the solar cell panel support apparatus of Claims 1-5, the wind pressure to a solar cell panel can be reduced.

  In particular, in the solar cell panel support device according to claim 5, disconnection of the power transmission cable can be suppressed.

  In the solar cell panel support device according to the sixth aspect, the possibility that the solar cell panel is damaged can be reduced.

  In the solar power generation device of Claims 7 and 8, the wind pressure to the solar cell panel can be reduced.

  In particular, in the solar power generation device according to claim 7, the rotation of the solar cell panel is stabilized.

It is a side view of the solar power generation device concerning a 1st embodiment of the present invention. It is explanatory drawing which shows the state which the solar cell panel of the solar power generation device which concerns on the 1st Embodiment of this invention rotated. It is a top view of the solar power generation device concerning a 1st embodiment of the present invention. It is the side view and top view of a solar power generation device concerning a 2nd embodiment of the present invention. It is the side view and top view which show the modification of the solar power generation device which concerns on the 2nd Embodiment of this invention. It is the side view and top view of a solar power generation device concerning a 3rd embodiment of the present invention. It is the side view and top view which show the modification of the solar power generation device which concerns on the 3rd Embodiment of this invention. It is an enlarged view which shows the attachment state of the torsion spring provided instead of the damper of the solar power generation device which concerns on the 3rd Embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a side view of a photovoltaic power generation apparatus 50 according to the first embodiment of the present invention. FIG. 2 is an explanatory diagram showing a state in which the solar cell panel of the solar power generation device 50 is rotated. FIG. 3 is a top view of the solar power generation device 50.
The solar power generation device 50 does not necessarily have to be fixed to the foundation, and can be moved as a self-supporting type.
The solar power generation device 50 includes a solar cell panel (solar cell module) 1 and a support (an example of a solar cell panel support device) 20.

The solar cell panel 1 can receive sunlight and convert it into electric power. The solar battery panel 1 is formed integrally by arranging a plurality of cells on the same surface.
A power transmission cable 8 for sending electric power converted by the solar cell panel is connected to a surface (back surface) opposite to the light receiving surface (front surface) of the solar cell panel 1. The power transmission cable 8 is connected to a power conditioner (not shown).
The vertical and horizontal dimensions of the solar cell panel 1 are, for example, 500 to 1000 mm and 500 to 2000 mm, respectively. The thickness of the solar cell panel 1 is, for example, 1 to 50 mm. The weight of the solar cell panel 1 is, for example, 5 to 20 kg, and further weight reduction is expected.

  The support 20 can support a surface (back surface) opposite to the light receiving surface of the solar cell panel 1. The solar cell panel 1 is supported by the support 20 in an inclined state in which one side is disposed at a position higher than the other side.

Specifically, the support 20 includes a frame (support member) 5, a connecting portion 22, and a damper 6 (an example of a control unit).
The frame 5 is formed by welding, for example, steel squares. The cross-sectional dimension of the frame 5 is, for example, 50 mm × 50 mm, and as shown in FIG. 3, the dimensions are such that the end portions other than the lower end portion of the solar cell panel 1 do not interfere with each other.
Since the support 20 has a frame structure, wind is applied to the back surface of the solar cell panel 1 from the direction indicated by the arrow in FIG. As a result, lift is generated in the solar cell panel 1.

  As shown in FIG. 3, the connecting portion 22 has a horizontal axis (fulcrum) 4 extending in the horizontal direction, and two bearing brackets 3 provided on the frame 5, which are arranged on the left and right sides with respect to the solar cell panel in plan view. And have. The “horizontal direction” mentioned here is not a strict sense of the horizontal direction. In other words, “horizontal direction” means that a manufacturing error is allowed in design and means “substantially horizontal direction” (the same applies hereinafter). Specifically, for example, it may deviate from the true horizontal direction within a range of −5 degrees to +5 degrees. The bearing fitting 3 has a built-in bearing (the bearing need not be built if it can rotate), and can support the horizontal shaft (fulcrum) 4.

The solar cell panel 1 and the support 20 are connected to each other by a horizontal axis (fulcrum) 4 supported by a mounting bracket 2 provided on the back surface of the solar cell panel 1.
Therefore, the connection part 22 can connect the back surface of the solar cell panel 1 so that it can rotate around the horizontal axis (fulcrum) 4 as shown in FIG.
The power transmission cable 8 is wired along the horizontal axis (fulcrum) 4 so as not to hinder the rotation of the solar cell panel 1.

The damper 6 can be controlled to suppress the vibration of the solar cell panel 1 generated by the wind pressure. The damper 6 is, for example, a hydraulic damper or an air damper. As shown in FIG. 3, the dampers 6 are arranged at two places on the left and right with respect to the solar cell panel 1 in plan view. One end of each damper 6 is attached via a mounting bracket (not shown) provided at the end of the back surface of the solar cell panel 1, and the other end is attached to the frame 5. That is, the damper 6 can support the left and right ends of the solar cell panel 1. The number of dampers 6 may be one.
The support is further equipped with, for example, a rubber shock absorber 7. The shock absorber 7 can absorb a shock when the rotated solar cell panel 1 comes into contact with the support.

Next, operation | movement of the solar power generation device 50 is demonstrated.
FIG. 2 shows a state of rotation of the solar cell panel 1 when the wind blows from the right hand direction (the direction of the arrow).
Since wind hits the back surface of the solar cell panel 1, lift is generated in the solar cell panel 1. As a result, the solar cell panel 1 rotates around the horizontal axis (fulcrum) 4 as shown in FIG. 2, and the lower side of the solar cell panel 1 is lifted. At that time, the rod of the damper 6 extends, and rapid rotation is suppressed.
In addition, when the light-receiving surface of the solar cell panel 1 becomes horizontal, it is preferable that the damper 6 is set to have a maximum length.

  Next, when the wind stops, the solar cell panel 1 loses lift. As a result, the lower side of the solar cell panel 1 rotates so as to approach the frame 5 and returns to the original position before the wind blows. At that time, the rod of the damper 6 contracts, and rapid rotation is suppressed. Further, the impact absorbing material 7 reduces the impact when the solar cell panel 1 contacts the support 20.

  As described above, in the solar power generation device 50, the damper 6 is freely contractible, so that the solar cell panel 1 rotates about the horizontal axis (fulcrum) 4 and the lower side is lifted. As a result, the area where the strong wind of the solar cell panel 1 hits is reduced, and the wind pressure is reduced.

[Second Embodiment]
Then, the solar power generation device 60 and the solar power generation device 70 which concern on the 2nd Embodiment of this invention are demonstrated. About the same component as the photovoltaic power generation apparatus 50 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

FIG. 4 is a side view and a top view of a solar power generation device 60 according to the second embodiment of the present invention.
The frame 5a of the support 20a included in the solar power generation device 60 is fixed to the installation surface (ground) in the vertical direction via the foundation 24a. The “vertical direction” referred to here is not a vertical direction in a strict sense. In other words, “vertical direction” means that a manufacturing error is allowed in design and means “substantially vertical direction” (the same applies hereinafter). Specifically, for example, it may deviate from the true vertical direction within a range of −5 degrees to +5 degrees.

The damper 6a is attached to the frame 5a installed in the vertical direction.
Further, the shock absorber 7a is fixed to the installation surface alone at a position where the lower end of the solar cell panel 1 hits. That is, the solar power generation device 60 is a fixed solar power generation device that is fixed to the installation surface.

  Since the operation of the solar power generation device 60 is the same as that of the solar power generation device 50, detailed description thereof is omitted.

FIG. 5 is a side view and a top view showing a solar power generation device 70 that is a modification of the solar power generation device 60.
Compared with the solar power generation device 60, the solar power generation device 70 is mainly different in the position of the connecting portion 22b that connects one side of the solar cell panel 1b so as to be rotatable about a substantially horizontal axis. .
That is, in the solar power generation device 70, the position of the mounting bracket 2b of the solar cell panel 1b is transferred to the end portion above the back surface of the solar cell panel 1b. The bearing bracket 3b is also moved to a position corresponding to the position of the mounting bracket 2b, and the solar cell panel 1b is rotatably connected around the horizontal axis (fulcrum) 4b.
However, the mounting bracket 2b can be combined into one. Correspondingly, the bearing fittings 3b can be combined into one.

  The frame 5b of the support 20b provided in the solar power generation device 70 is fixed to the installation surface (ground) in the vertical direction via the foundation 24b. The shock absorber 7b is fixed to the installation surface alone at a position where the lower surface of the lower end of the solar cell panel 1b hits the installation surface (ground). That is, the solar power generation device 70 is a fixed solar power generation device.

  Moreover, the solar power generation device 70 becomes a self-supporting movable solar power generation device by installing a support body having a tilting frame similar to the solar power generation device 50.

  About operation | movement of the solar power generation device 70, since it is the same as that of the solar power generation device 50, detailed description is abbreviate | omitted.

[Third Embodiment]
Then, the solar power generation device 80 and the solar power generation device 90 which concern on the 3rd Embodiment of this invention are demonstrated. About the same component as the photovoltaic power generation apparatus 50 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

FIG. 6 is a side view and a top view of a solar power generation device 80 according to the third embodiment of the present invention.
The frame 5c of the support 20c included in the solar power generation device 80 is fixed to the installation surface (ground) in the vertical direction via the foundation.
The solar cell panel 1c is installed so as not to contact the support 20c and the installation surface (ground). That is, the solar cell panel 1c is not supported in an inclined state, and is installed in a state suspended from the horizontal axis (fulcrum) 4c. Note that one end of the damper 6c is attached to the side surface of the solar cell panel 1c via a mounting bracket (not shown), and the other end is attached to a frame 5c installed in the vertical direction. The number of dampers 6c may be one.
In the solar power generation device 80, even if the solar cell panel 1c rotates, the impact absorbing material 7 is not necessary because there is no frame 5c or installation surface (ground) to contact.

Next, operation | movement of the solar power generation device 80 is demonstrated.
Since wind hits both surfaces of the solar cell panel 1c, lift occurs in the solar cell panel 1c. As a result, the solar cell panel 1c rotates around the horizontal axis (fulcrum) 4c. At that time, the rod of the damper 6c is extended, and rapid rotation is suppressed.
In addition, when the light-receiving surface or back surface of the solar cell panel 1c becomes horizontal, it is preferable that the damper 6c is set to have a maximum length.

  Next, when the wind stops, the solar cell panel 1c loses lift. As a result, the solar cell panel 1c rotates so as to approach the vertical direction, and returns to the original position before the wind blows. At that time, the rod of the damper 6c contracts, and rapid rotation is suppressed.

  Thus, in the solar power generation device 80, since the damper 6c can freely contract, the solar cell panel 1c rotates around the horizontal axis (fulcrum) 4c, and the area where the strong wind of the solar cell panel 1c hits is reduced. Wind pressure is reduced.

FIG. 7 is a side view and a top view showing a solar power generation device 90 that is a modification of the solar power generation device 80.
The frame 5d of the support 20d included in the solar power generation device 90 is fixed to the installation surface (ground) in the vertical direction via the foundation 24d.
The solar cell panel 1d is installed so as not to contact the support 20d and the installation surface (ground). That is, the solar cell panel 1d is not supported in an inclined state, and is installed in a state suspended from the horizontal axis (fulcrum) 4d.
Furthermore, the position of the mounting bracket 2d of the solar cell panel 1d is moved to the end portion above the back surface of the solar cell panel 1d. The bearing bracket 3d is also moved to a position corresponding to the position of the mounting bracket 2d, and the solar cell panel 1d is rotatably coupled around a horizontal axis (fulcrum) 4d.
However, the mounting bracket 2d can be combined into one. Correspondingly, the bearing fittings 3d can be combined into one.

  One end of the damper 6d is attached to the side surface of the solar cell panel 1d via a mounting bracket (not shown), and the other end is attached to a frame 5d installed in the vertical direction. The number of dampers 6d may be one.

In the solar power generation device 90, the case where the spring 9 is provided instead of the damper 6d as the control unit will be described. This spring 9 is a torsion spring.
FIG. 8 is an enlarged view showing an attachment state of the spring 9 provided in the solar power generation device 90.
The springs 9 are arranged at two left and right positions so that the horizontal shaft (fulcrum) 4d passes through the inner diameter portion.
Moreover, the iron plate 10 is provided in the spring 9 of two places on either side so that the upper end part of the solar cell panel 1d may be pinched | interposed. However, each iron plate 10 is provided on a different surface (one surface and the other surface) of the solar cell panel 1d.
One end of each spring 9 is fixed to the horizontal shaft 4d, and the other end is welded to the iron plate 10 so as to contact (not join) the frame portion of the solar cell panel 1d, and the restoring force of the spring 9 is used. Thus, the vibration of the solar cell panel 1d due to wind is controlled. The restoring force of the spring 9 is preferably maximized at the position where the solar cell panel 1d is in the horizontal direction.

Thus, according to the solar power generation device 90, since the two springs 9 are provided so that the restoring force of the spring 9 acts in the opposite direction, strong wind is applied to either the front surface or the back surface of the solar cell panel 1d. Even if hits, vibration can be controlled.
In the solar power generation device 90, even if the solar cell panel 1d rotates, the shock absorber 7 is not necessary because there is no frame 5d or installation surface (ground) to contact.

  About the operation | movement of the solar power generation device 90, since it is the same as that of the solar power generation device 80, detailed description is abbreviate | omitted.

  The present invention is not limited to the above-described embodiments, and modifications can be made without changing the gist of the present invention. For example, a case where the invention is configured by combining some or all of the above-described embodiments and modifications is also included in the technical scope of the present invention.

1, 1b, 1c, 1d Solar panel 2, 2b, 2c, 2d Mounting bracket 3, 3b, 3c, 3d Bearing bracket (rotatable)
4, 4b, 4c, 4d Horizontal axis (fulcrum)
5, 5a, 5b, 5c, 5d Frame 6, 6a, 6b, 6c, 6d Damper 7, 7a, 7b Shock absorber 8 Power transmission cable 9 Spring 10 Iron plate 20, 20a, 20b, 20c, 20d Support body 22, 22a , 22b, 22c, 22d Connecting portions 24a, 24b, 24c, 24d Foundation 50 Solar power generator 60 Solar power generator 70 Solar power generator 80 Solar power generator 90 Solar power generator

Claims (8)

In the solar cell panel support device that supports the solar cell panel, where one side is arranged at a higher position than the other side and the power transmission cable is connected,
A connecting portion that rotatably connects one side of the solar cell panel around a substantially horizontal axis (fulcrum);
And a control unit that controls to suppress vibration of the solar cell panel generated by wind pressure.   2. The solar cell panel support device according to claim 1, wherein the control unit is a damper whose one end is fixed to the solar cell panel or a torsion spring that generates a restoring force around the horizontal axis.   The said control part is a damper, The solar cell panel support apparatus of Claim 1 characterized by the above-mentioned.   The solar cell panel support device according to claim 1, wherein the control unit is an elastic body.   The solar cell panel support device according to any one of claims 2 to 4, wherein the power transmission cable is wired along the horizontal axis (fulcrum).   The solar cell panel support device according to claim 5, further comprising an impact absorbing material that absorbs an impact when the solar cell panel comes into contact. A solar panel arranged on one side higher than the other side;
In a solar power generation device comprising a support that supports the solar cell panel,
The support is a connecting portion that rotatably connects one side of the solar cell panel around a substantially horizontal axis (fulcrum);
And a control unit that performs control so as to suppress vibration of the solar cell panel generated by wind pressure.   The said solar cell panel has a stabilization member for stabilizing this solar cell panel with the airflow which flows along the surface on the opposite side of the light-receiving surface of this solar cell panel, The said solar cell panel has a stabilization member for stabilizing this solar cell panel. Solar power generator.

Images