JP2015208067A - Support stand for solar cell panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a space is required for installing solar cell panels in a cropland, and to provide a lightweight solar cell panel support stand of a simple structure, where the light-receiving surface of a solar cell panels tracks the direction of the sun, in order to improve power generation efficiency.SOLUTION: Between a bracket for holding a solar cell panel and a cross-beam forming the horizontal surface as a support base, a lightweight mechanism rotating while fixing a hinge can be provided, and a plurality of solar cell panels can be controlled simultaneously by driving an actuator, so that the light-receiving surface can track the sun from sunrise to sunset.

Description

The present invention relates to a structure of a solar cell panel support frame on which a solar cell panel is installed.

In recent years, a solar cell panel has been installed above the cultivated land. This is considered to be a promising technology because crop production can be continued on cultivated land and electric power can be generated by sunlight.
In this case, in order to be able to work on the cultivated land where the solar cell panel is installed, it is necessary to install the solar cell panel at a high position, and in order to reduce the influence of light shielding by the solar cell panel, the interval is It is necessary to open a solar panel,
It is necessary to provide the solar cell panel support frame in a high and wide area.

In order to increase the efficiency of power generation, the solar cell panel support base is required to track the solar cell panel to the sun so that the light receiving surface is oriented as perpendicular to the sun as possible.
On the other hand, in cultivated land, it is necessary to cultivate the soil and constantly supply fertilizer, water, etc.
The structure for the support base of the solar cell panel is desired to be configured as simply as possible. Conventionally, the solar cell panel can be installed with the upper surface of the support base tilted,
Alternatively, a solar cell panel is attached to one scaffolding pipe using, for example, a U-shaped mounting bracket, and the solar cell panel is inclined with respect to the scaffolding pipe.
In addition, since it is installed on the soil of cultivated land, the weight of the entire support frame needs to be light.

Utility Model Registration No. 3184322 Utility Model Registration No. 3184326

In the example of Patent Document 1, the solar cell panel could be installed using a simple member such as a pipe for scaffolding, but since the support frame is fixed, the light receiving surface of the solar cell panel is fixed in one direction. However, there is a problem that the energy of sunlight that constantly moves in the sky from morning to evening cannot be efficiently photoelectrically converted.

In the example of Patent Document 2, the solar cell panel has a function of tracking the light-receiving surface of the solar panel toward the sun, so the efficiency has been improved. The tilt tracking mechanism is expensive, requires large-scale power equipment, and is expensive for long-term repair and maintenance.
Advanced technology to control for tracking was also necessary. The weight of the support frame including the solar panel and the tracking mechanism is large, and a foundation such as sturdy concrete is required.
It was not of a size that could be easily installed on cultivated soil. Therefore, there is a demand for a support panel for a solar panel that tracks the direction of the sun at a lower cost than in the past on cultivated land.

In order to solve the problem, the present invention can not only easily construct a support platform for a tracking solar cell panel with a more compact structure, but also can reduce maintenance costs and can be installed on cultivated land. It aims at providing the support stand for panels.

In order to solve the above-mentioned problems, the present inventor has a mechanism and a control unit for simultaneously driving a plurality of solar battery panels, on a horizontal beam fixed on a light support frame using a scaffold pipe. An actuator is installed as a power source, a motor is used as the actuator, and the rotational force is converted into a reciprocating linear motion of the rack by a gear reduction transmission mechanism.
The solar panel tracking rotation mechanism uses an inexpensive hinge, and found a solar cell panel support frame having a tracking mechanism for rotating a plurality of solar cell panels.

That is, the configuration of the present invention is as follows.
[1] A cross beam member provided on a light frame structure using scaffolding pipes,
It is installed at a height that can secure a working space for cultivation on the cultivated land.
The direction of the horizontal beam is arranged at right angles to the direction near the center of the range where sunlight travels in the sky during daytime hours and the sunlight is not blocked. If the plane including the axis for rotating the panel is installed parallel to the revolution plane where the sun moves from spring to summer, autumn and winter, the efficiency of the light receiving part of the solar cell panel increases, but in the present invention, from the simplicity of the structure,
It is made to coincide with a horizontal plane perpendicular to the direction of gravity, and the axial direction is directed to the direction near the center.
[2] One side of the cross beam member is fixed to one side of the hinge with a screw, and the other side of the hinge is fixed to the bracket holding the solar panel with a screw to rotate the light receiving surface of the solar panel easily. Use as a mechanism. The bracket and solar panel can be easily replaced by removing the screw during maintenance that requires replacement due to wear, rust, etc., and the solar panel has a lightweight and solid rotating mechanism weighing only a few hundred grams Support platform can be provided.
[3] The bracket for holding the solar cell panel also functions as an arm for turning, and is connected by a connecting rod that is linearly driven by a motor as an actuator.
Provided is a solar cell panel support frame in which a plurality of brackets for holding a solar panel are simultaneously rotated in the same direction.
[4] On one surface of the cross beam member, a motor that is an actuator, a transmission mechanism that decelerates and converts the rotational force of the motor into a linear motion by a gear, and a controller that rotationally drives the motor are installed in the drive box. Tracking control can be performed with respect to the sun. Tracking is possible by detecting the direction of sunlight with a sensor,
In the present invention, the time is calculated from the calendar and the built-in clock of the control unit, and the direction of the sun is calculated and rotated. If necessary, the area to be installed may be input to control appropriate rotation. Provided is a solar cell panel support frame equipped with such a control unit capable of automatic tracking.
[5] Since no solar power is generated at night, it reverses by the morning of the following day and returns to the rotation start angle until the start of power generation the next morning.
A solar panel support stand that returns to the starting position of rotation during the night is provided.

According to the present invention, a frame structure with a simple scaffolding pipe is assembled on the cultivated land,
Using a hinge, place the solar panel assembly on the surface of the horizontal beam
It is possible to provide a solar cell panel support frame that tracks in the direction of the sun with an inexpensive and lightweight drive structure.

FIG. 1 is a perspective view showing a solar cell panel support frame according to an embodiment of the present invention. FIG. 2 is a perspective view of a rotating structure unit in which the solar cell panel and the bracket are assembled. FIG. 3 is a perspective view of a drive mechanism for tracking the rotation of the solar cell panel. FIG. 4 is a perspective view of an actuator for rotating the solar cell panel. FIG. 5 is a diagram of a first embodiment for tracking the rotation of the solar cell panel from morning to evening. FIG. 6 is a second embodiment in which the axis for rotating the solar cell panel is changed. FIG. 7 is a perspective view of a solar cell panel support frame installed on a conventional cultivated land.

A solar cell panel support frame according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a state in which a solar cell panel support frame 20 according to an embodiment is provided on a cultivated land. FIG. 2 shows that the solar cell panel 6 is assembled to the bracket 8 and hinges 9a and 9b.
It is a perspective view of the rotation structure part which uses. FIG. 3 is a perspective view showing that the solar cell panel 6 is rotated by reciprocating the connecting rod 12 in the linear direction D direction by the actuator 13 and the drive mechanism 14. In FIG. 4, the actuator 9 is AC 100-20
FIG. 4 is a perspective view of a motor that is driven at 0 V or DC 12 to 24 V and in which the drive mechanism 14 decelerates the rotational motion to a linear motion by a gear transmission mechanism. FIG. 5 is a drive diagram for tracking the solar cell panel in the direction of the sun from sunrise in the morning to sunset in the evening.
A first embodiment in which the rotating shaft is installed horizontally will be described. Fig. 6 shows the direction of the elevation angle of the sun.
It is the 2nd Example which changed the angle of the rotating shaft by providing the inclined support member.

The direction of the arrow in FIG. 1 is defined as the front surface of the solar cell panel support gantry 20, and the rear and left and right sides of the solar cell panel support gantry 20 are determined with reference to that direction. It is installed in the direction near the center of the range in which the sun passes through the sky and the sun moves in the sky and sunlight is not shielded.

FIG. 7 shows a solar cell panel support frame in which a conventional solar cell panel 6 is fixed to the third member 4 and the fourth member 4, but the small spacing between the panels reduces the amount of solar radiation required for crops in the cultivated land. It is provided to ensure.
On the other hand, the solar cell panel support base 20 of FIG. 1 includes four legs, a first member 3 connecting the front and rear legs, and a second member 4a passed between the first members 3 and And a third member 4b. At least one solar cell panel 6 is attached to the second member 4 a and the third member 4 b via the bracket 8.
As shown in FIG. 2, the bracket 8 is installed so as to be rotatable around one axis in the front direction using at least one hinge 9. In order to cultivate on cultivated land as before, it is necessary to irradiate the crop with sunlight, and the solar cell panels 6 are arranged at intervals, and further, the adjacent solar cell panels are shielded by turning. So as not to,
It is necessary to leave a gap more than the width of one panel.

In one embodiment of the device of the present invention, one axis in the front direction is the horizontal direction because of the simplicity of the equipment configuration, but it is possible to make the elevation angle coincide with the revolution direction of the sun in order to increase the power generation efficiency. As a method, as in the second embodiment shown in FIG.
This is possible only by changing the shape of the second member 4a and the third member 4b.

As shown in FIG. 2, screw holes 8 a and 8 b are provided in the bracket 8, and holes 6 a and 6 b are provided in the outer frame of the solar cell panel 6 and are fixed by screws or the like. The bracket 8 is provided with screw holes 8d and 8e, and one surface of the hinges 9a and 9b is fixed. The hole on the other surface of the hinge is provided with screw holes on the surfaces of the second member 4a and the third member 4b. It is fixed.
The bracket 8 is provided with a long hole 8c through which a connecting rod 12 extending in the left-right direction passes, and an operating block 10a and a counter-acting block 10b are fixed to the connecting rod 12 with screws or the like. It is possible to transmit a driving force in the left-right direction with an appropriate gap so that it can move.

The bracket 8 is provided with a spring hooking hole 8 and the operating block 10a is provided with a spring hooking portion 10c. The hooking portion of the spring is applied to give an urging force by the tension coil spring 11, thereby rotating the solar cell panel. Prevents rattling vibrations due to wind pressure in the moving direction. When this vibration is repeatedly generated in the member, the life of the solar cell panel and the structural member is reduced due to fatigue, which is a major deterioration factor.

FIG. 2-1 shows the assembly of the operating block 10a and the connecting rod 12 of the reverse operating block 10b. A long hole 8c of the bracket is sandwiched between the operation block 10a and the reverse operation block 10b, and is fixed to the connecting rod 12 with a screw or the like with a slight gap.

As shown in FIG. 2, the drive box 5 is fixed to the second member 4 a and the third member 4 b with screws, and a drive mechanism for driving the connecting rod 12 left and right by an actuator is installed in the drive box 5. ing. The second member 4a and the third member 4b are U-shaped brackets 21.
Are fixed to the third member by screws.

The bracket 8 that holds the solar cell panel 8 is fixed to the second member 4a and the third member 4b via a hinge 9, and the positional accuracy and strength with the drive mechanism is the same as that of the same member that fixes the drive box 5. It is secured by rotating to the second member 4a and the third member 4b.

As shown in FIG. 3, the total weight of the solar cell panel is sufficiently firmly supported by the second member 4a and the third member 4b via the bracket. The external force generated from the balanced moment force can be subjected to a reaction force by the connecting rod 12 extending in the left-right direction from the drive portion in the drive box. The motor drive torque is decelerated by worm gear etc.
It is operated with a driving force of 50-100 kgf with a slow driving of about 0.5 mm / min.

When the connecting rod 12 moves to the right while being always urged to the right side by the spring force, the reverse operation block 10b presses the bracket 8 to the right. This linear motion D1 in the right direction causes the bracket 8 and the solar cell panel 6 fixed to the bracket 8 to move to the hinge 9a.
And 9b are rotated in the A1 direction around the rotation axis. Conversely, connecting rod 12 moves to the left D2
Then, the operation block 10a presses the bracket 8 to the left and rotates it in the A2 direction.

For normal driving, this actuator and structural strength are sufficient, but for a huge load that rarely occurs due to snow on the solar panel 6, a safety design should be made assuming the bending strength of the bra 8 ket. It is. That is, when it is deformed, the maintenance can be simplified by removing the hinge 9 and replacing the bracket 8.

As shown in FIG. 4, the drive box 5 is fixed to a hole 4c provided in the second member 4a and the third member 4b by screws. In the drive box 5, a drive mechanism 14 composed of a motor 13 as an actuator and a plurality of reduction gears is installed. The rotational torque of the motor 13 is converted into linear drive to the rack shaft 15.
The rack shaft 15 is connected to the connecting rod 12 by a connecting portion 17, and the operation block 10.
A is transmitted to the reverse operation block 10b. A torque limiter or the like may be built in the drive mechanism 14 to protect the motor 13.

FIG. 5 shows a state in which the solar cell panel is rotated by the rotation axis A using the hinge 9 as the connecting rod 12 moves left and right. The driving speed and position accuracy are realized by controlling the number of rotations of the motor. However, since the position is gradually shifted by a plurality of reciprocating motions, a rack is used as a sensor for the starting position and the ending position of the rotation. By providing a micro switch or the like (not shown) on the shaft 15, the position can be corrected sequentially.

In Example 2 of FIG. 6, the rotation axis of the solar cell panel is not in a horizontal plane, but the rotation axis is aligned with the revolution surface of the sun, and the light receiving surface is perpendicular to the sun direction.
Here is an example of improved power generation efficiency. In the first embodiment, the second member 4a and the third member 4b can be horizontally supported on the first member 3, but in the second embodiment, a plane parallel to the sun's revolution plane is formed with the fourth member 18. By adding the fifth member 19,
The second member 4a and the third member 4b are inclined by the angle of elevation of the rotation axis.
Since the upper structures of the second member 4a and the third member 4b are the same as in the first embodiment,
Description is omitted.

In cultivated land, heavy support platforms have been submerged over a long period of time, making it impossible to form a relatively solid foundation, and weight reduction has been desired. In the present invention, by using a hinge for the rotating mechanism, the driving mechanism using a conventional cylinder is reduced in size and weight to a mechanism in which the weight of 4 to 5 kg is only 1 to 2 kg or less, and is simply constructed by using a scaffolding pipe or the like. Can now be installed on top of a structure. In addition, the maintenance and equipment costs for replacement and repair have been reduced, and the merit of being able to add a solar tracking function to the solar panel support frame has increased.

In conventional fixed solar panels, the sun moves through the sky from sunrise to sunset, so the incident light of the sun cannot enter the light receiving part vertically in most time periods, so the power generation efficiency has been reduced to almost half. The By tracking the sun, power generation is expected to improve by about 30%.

It is installed with the axis of rotation of the solar panel aligned with the horizontally formed surfaces of the second member 4a and the third member 4b. Strictly speaking, it is not possible to track perpendicularly to the direction of the sun, but the fourth and fifth members shown in FIG. It is possible to realize a solar cell panel support frame having a tracking mechanism with improved reliability.

In fact, in the present invention, the rotating solar cell panel is 2 m in width.
An outer frame with a mass of 2 kg, 1 m in length and 5 cm in thickness, is made of aluminum. By placing the hinge of the rotating shaft near the center, most of the mass is supported by the rotating shaft at the center of gravity. can do. The structure is such that it can be controlled simply by braking the connecting shaft, the driving frictional force, and the external force applied to the solar cell panel that linearly moves as the rotational drive.

The drive mechanism including the bracket 8 that rotates the solar panel 6 and the connecting rod 12 that transmits the driving force from the actuator must be configured with high positional accuracy and rigidity. In the present invention, the second beam which is a cross beam member that supports and fixes the hinge.
By installing the drive box 5 containing the actuator and the drive mechanism on the member 4a and the third member 4b on the cross beam member of the same member, it is possible to realize a solar cell panel support frame with high positional accuracy and strong rigidity.

In the example of FIG. 1, the solar cell panels 6 are arranged in a staggered manner, but they may be arranged in a vertical row to ensure a gap in the horizontal direction.
Arrange the solar panels 6 on the cultivated land 7 at intervals because the crops to be cultivated require solar radiation and most crops need to limit the amount of solar radiation in the summer. It is.
There are many crops that need to control solar radiation, such as rice, tomatoes and vegetables. Furthermore, it is necessary to leave a space in order to prevent light shielding of the adjacent solar cell panel by rotating and tracking the solar cell panel of the present invention,
When sufficient sunlight irradiation is necessary for the growth of crops, the gap can be adjusted, and the rotation angle of the solar cell panel can be adjusted.

1 Leg 2 First member (left-right direction)
3 First member (front-rear direction)
4a 3rd member 4b 4th member 5 Drive box 6 Solar cell panel 7 Cultivated land 8 Bracket 9 Hinge 10 Actuation block and reverse action block 11 Tension coil spring 12 Connecting rod 13 Motor 14 Drive mechanism 15 Rack shaft 16 Control part 17 Connection part 18 4th member 19 5th member 20 Solar cell panel support frame 21 U-shaped bracket 30 Cultivated land edge

Claims (4)

At least one hinge is fixed and rotated between the holding member that holds the solar cell panel and at least one horizontal beam member that forms a plane that supports the solar cell panel. A support base for a solar cell panel, comprising a mechanism for tracking a light receiving surface so as to be perpendicular to the incident direction of sunlight. 2. The solar cell panel support frame according to claim 1, wherein a rotation axis for rotating the solar cell panel is included in a horizontal plane. The drive mechanism unit including an actuator is provided for rotating and tracking the solar cell panel, and the drive mechanism unit is fixed to the cross beam member. Solar panel support stand. The horizontal beam member and the structural member that supports the horizontal beam member are attached to a height that exceeds the height at which the work can be performed on the cultivated land, and the solar cell panel does not block sunlight even if it rotates. The solar cell panel support frame according to any one of claims 1 to 3, wherein the solar cell panel support frame is installed with a gap therebetween.