JP6979585B2 - Solar power generator - Google Patents

Description

The present invention relates to a photovoltaic power generation device that generates electricity by a solar panel, and more particularly to a photovoltaic power generation device in which a solar panel is installed on a float aggregate floating on water.

In a photovoltaic power generation device that converts sunlight into electric power, a solar panel (also referred to as a solar cell panel or a solar cell module) is used as a photoelectric conversion device. Solar panels are mainly installed on the roofs, walls, and ground of buildings, but in recent years, they have also been installed on the water of idle ponds and lakes.

When the solar panel is installed on the water, a float for floating the solar panel on the water is used, and the solar panel is installed on the float (see Patent Documents 1 and 2).

Special Table 2014-511043 Gazette Japanese Unexamined Patent Publication No. 2015-21771

By the way, in solar power generation, the orientation of the solar panel is important, and by tracking the solar panel to the sun, the power generation efficiency is greatly increased. Therefore, photovoltaic power generation systems having a solar tracking mechanism are being studied in various fields, but many of them are large-scale and require a large amount of capital investment. In addition, there is also a problem that a large amount of generated power is consumed for tracking the sun, and the power generation efficiency cannot always be sufficiently improved.

The present invention has been proposed in view of such conventional circumstances, and it is possible to track the sun with a simple configuration, does not require a large amount of capital investment, and suppresses power consumption for tracking the sun. The purpose is to provide a photovoltaic power generation device capable of this.

To achieve the foregoing objects, the solar power generating device of the present invention, float float assemblies connecting the float for solar panels on the water, a photovoltaic power generation apparatus for tracking the sun by pulling, the float In the aggregate, the floats adjacent to each other in one direction are plastic molded bodies and are connected by a passage joint installed so as to be separated from the water surface, and the floats are separated from the water surface in the direction orthogonal to the one direction. The float aggregates are connected to each other with a predetermined distance from each other with the floats adjacent to each other. At the same time, the traction rope is connected to the float aggregate, and the float aggregate is rotated on the water by traction operation of the traction rope.

In the photovoltaic power generation device of the present invention, a float aggregate floating on water is towed and rotated to be tracked by the sun. Float aggregates floating on the water are easier to move than, for example, a photovoltaic power generation device installed on the ground, and each float is connected to an adjacent float at a predetermined distance from each other. Therefore, there is little resistance to water during rotation. Therefore, for example, it is possible to easily track the sun by simply towing it with a rope, the device configuration is simple, and the power consumption for tracking the sun is minimized.

Further, in the photovoltaic power generation device of the present invention, the interval between floats is invariant. When the distance between floats changes due to expansion and contraction, etc., it affects the water flow flowing between floats and changes the resistance to water. On the other hand, if the distance between the floats is constant (constant), the water flow is not affected and the resistance to water is always small.

Further, in the photovoltaic power generation device of the present invention, one solar panel is installed on one float. By installing one solar panel for one float, the degree of freedom in the layout of the entire float aggregate is increased, and it is possible to design (layout) so that power can be generated efficiently.

According to the present invention, it is possible to provide a photovoltaic power generation device capable of solar tracking with a simple configuration, which does not require a large capital investment and can suppress power consumption for solar tracking. It is possible.

It is a schematic perspective view of a float assembly. It is a schematic perspective view which shows the state which the solar panel is attached to the float. It is a schematic schematic perspective view of a float. It is a schematic perspective view of the float in the state where the support part is raised. It is a schematic plan view which shows the state which the float is connected by the passage joint. (A) to (E) are schematic plan views showing an example of connecting a towing rope to a float aggregate, respectively.

Hereinafter, embodiments of a photovoltaic power generation device to which the present invention is applied will be described in detail with reference to the drawings.

In the photovoltaic power generation device of the present embodiment, a solar panel is installed on a float floating on water, and a plurality of solar panels are connected to form a float aggregate, which is tracked by the sun. FIG. 1 shows an example of a float assembly 1, in which a solar panel 50 is installed on a float 10 formed as a plastic molded body, and each float 10 is plastic-molded in the same manner as the float 10. They are connected by a passage joint 60 formed as a body.

Here, the aisle joint 60 is coupled to the float 10 on the upper surface of each float 10, and the floats 10 are coupled at predetermined intervals in the connecting direction of the aisle joint 60, and thus a predetermined gap is provided between the adjacent floats 10. Is formed.

On the other hand, the connection in the direction orthogonal to the connection direction by the passage joint 60 is performed by connecting the eaves-shaped ends of each float 10. Since the eaves-shaped end is separated from the water surface when the float 10 is floated, a gap is formed between the floats 10 even in the relevant direction (the direction orthogonal to the connecting direction by the passage joint 60). become.

In the float aggregate 1 having the above configuration, the float aggregate 1 is connected by a passage joint 60 formed as a plastic molded body in a predetermined connection direction, and the eaves-shaped ends of the float 10 are connected in a direction orthogonal to the passage joint 60. And all intervals are kept constant (invariant). Therefore, the resistance to water is always small.

Further, in the float aggregate 1, they are connected by a passage joint 60, and a large space between the floats 10 can be taken. By increasing the distance between the floats 10, the float aggregate 1 is less likely to be affected by the waves, and it is possible to prevent the float aggregate 1 from inadvertently moving from the floating position. Normally, the float aggregate 1 has anchors installed or tied to the land so that it does not move due to waves, and an asobi is provided for mooring in anticipation of high tide low tide differences and fluctuations in water volume before and after rainy weather. If the float aggregate 1 moves due to the influence of waves or the like due to this asobi, it cannot move as planned in the solar tracking described later, and it becomes difficult to improve the power generation efficiency. Since the float aggregate 1 has a large distance between the floats 10, it is easy to pass the flow of water due to waves or the like and does not move carelessly.

In the photovoltaic power generation device of the present embodiment, the above-mentioned float aggregate 1 is tracked by the sun, and since the float aggregate 1 is floated on the water, as compared with the case where it is installed on the ground, for example, It is possible to rotate it with a small force and make it track the sun. Further, a gap is formed between the floats 10 to be connected so that water can pass therethrough as shown by an arrow in FIG. 1. Therefore, when the float aggregate 1 is rotated, the resistance of water can be weakened, and the float aggregate 1 can be rotated with a smaller force. In FIG. 1, the arrow is shown to pass on the float, but the arrow is for indicating the direction in which water passes, and the actual flow of water occurs on the water surface between the floats 10. do.

Hereinafter, the float 10, the passage joint 60, and the solar panel 50 mounted on the float 10 constituting the float assembly 1 will be described in detail.

FIG. 2 is a diagram showing a state in which the solar panel 50 is installed on the float 10, and FIGS. 3 and 4 are diagrams showing a state in which the solar panel 50 is removed from the float 10.

The floats 10 shown in FIGS. 2, 3 and 4 constitute a float assembly 1 in which a large number of floats 10 are connected by a passage joint 60 (see FIG. 5) to install a solar panel 50. The float aggregate 1 is a portion where, for example, thousands (10,000 at most) of floats 10 are assembled, and among the floats 10 used for the float aggregate 1, some floats 10 are used. , The solar panel 50 is not installed, and it is used as a passage for maintenance and inspection of the solar panel 50. The passage is also used to lay cables from the solar panel 50.

It is also important that the float aggregate 1 does not move due to the influence of wind or the like. Therefore, for example, the float 10 is moored by the mooring member such as the anchor rope so that the mooring member such as the anchor rope can be moored by using the float 10 used as a passage or the like in which the solar panel 50 is not installed. It may have a structure that can be used.

As shown in FIGS. 3 and 4, the float 10 has a support portion 11 that supports one end 51 of a pair of longitudinal sides of the solar panel 50, and the other end 52 of the other longitudinal side of the solar panel 50. It is provided with a receiving unit 12 for receiving. The height of the support portion 11 is designed so that the solar panel 50 is installed in an appropriate inclined state in consideration of the power generation efficiency of the solar panel 50.

One end portion 51 of the solar panel 50 is provided with an aluminum pedestal supported by the support portion 11, and this pedestal is supported on the support portion 11.

On the other hand, the float 10 includes a fixing bracket 13 on one end side for fixing one end 51 side of the solar panel 50 to the support 11. Then, the solar panel 50 is fixed by being sandwiched between the fixing metal fitting 13 on one end side and the support portion 11. By using the metal fixing bracket 13, the solar panel 50 can be held more firmly, unlike the holding by elasticity of an elastomer or the like.

The other end 52 of the solar panel 50 is also provided with an aluminum pedestal similar to the aluminum pedestal provided at the one end 51. The float 10 is provided with two fixing brackets 14 on the other end side for fixing the other end 52 side (the other end side) of the solar panel 50 received by the receiving portion 12 to the float 10, and the other end side thereof. The other end side of the solar panel 50 is fixed to the float 10 by the fixing bracket 14 of the above.

The float 10 is manufactured, for example, by blow molding in which a molten tubular parison is sandwiched between a plurality of split dies and inflated, and various thermoplastic resins can be used as the molding material, for example, polyethylene. Or a polyolefin resin such as polypropylene can be preferably used.

As shown in FIGS. 3 and 4, the float 10 has a rectangular shape (rectangular shape) as a whole, and has a side wall portion 15 including a parting line PL, a surface wall 16 located on the upper side, and a lower portion. It has a back surface wall 17 located on the side, and has a structure having a hollow portion for accommodating gas (air or the like) inside.

The float 10 is formed with a support portion 11 for supporting the solar panel 50 formed by combining the back surface wall 17 and the front surface wall 16. FIG. 3 shows a state before the support portion 11 is raised as shown in FIG. 1, and three sides 21, 22, 23 other than the side 24 on one end side around the support portion 11 are cut off. The side 24 on one end side is used as a hinge, and the surface wall 16 side (the side on which the solar panel 50 is arranged) can be raised so as to form the opening 26.

When installing the solar panel 50, as shown in FIG. 4, the support portion 11 is raised on the surface wall 16 side so as to abut on the inner wall surface 25 of the opening 26 on the side 24 side to be the hinge, and the hinge and the hinge. The solar panel 50 is installed so that the lower side of the one end side of the solar panel 50 is supported by the side 22 on the side facing the side 24 on the one end side.

A receiving rib for receiving the one end 51 side of the solar panel 50 is provided on the side 22 on the side facing the side 24 on the one end side which is the hinge of the support portion 11. Specifically, this receiving rib portion is designed so that the back surface wall 17 is brought closer to the front surface wall 16 side to provide a stepped structure, and when the solar panel 50 is installed on the float 10, one end portion 51 of the solar panel 50 is provided. The side can be received so that the end portion 51 side of the solar panel 50 does not exceed the support portion 11 and shift to the one end side.

When the support portion 11 is configured in this way, the opening 26 is located in the vicinity of the support portion 11, but the inner wall surface of the opening 26 becomes a wall surface that suppresses structural bending, so that the opening 26 bends. Is unlikely to occur. Further, since the support portion 11 has a hinge structure and is connected to the main body of the float 10, even if the float 10 is bent, the support portion 11 is not easily affected by the bending, and the support portion 11 is the back surface wall 17. In addition to the fact that the surface wall 16 is a portion where the rigidity is increased by aligning the surface walls 16 with each other without being separated too much, the deformation is not caused by the influence of the bending.

Next, a method of fixing the solar panel 50 will be described. As shown in FIG. 2, in the solar panel 50, one end 51 side of the solar panel 50 is fixed to the support 11 by the fixing bracket 13 on the one end side. In this way, it is fixed to the float 10.

The fixing bracket 13 on one end side is a side facing the hinge and has the other surface fixed to the surface 11a of the support portion 11 facing the one end side of the float 10 in a state where the support portion 11 is raised. An L-shaped angle shape including a portion 13b and a sandwiching portion 13a provided so as to extend from the fixing portion 13b in a direction substantially orthogonal to the fixing portion 13b and having one surface for sandwiching the solar panel 50 with the support portion 11. It is a fixing bracket of.

Then, as shown in FIG. 2, the fixing bracket 13 on one end side is screwed to the support portion 11 with four screws 13c, and one end of the fixing metal fitting 13 to the two screws 13c near the center. The screw holes provided in the fixing bracket 13 on the side for passing the screws 13c are elongated in the vertical direction.

Therefore, when the fixing bracket 13 on one end side is temporarily fixed to the support portion 11 with the two screws 13c near the center, the distance between the holding portion 13a and the support portion 11 can be changed on the one end side. The fixing bracket 13 can be slid with respect to the support portion 11.

Therefore, with the fixing bracket 13 on one end side temporarily fixed to the support portion 11, the one end side is provided with a gap for inserting the solar panel 50 between the holding portion 13a of the fixing bracket 13 on the one end side and the support portion 11. After sliding the fixing bracket 13 and inserting the solar panel 50 into the gap, the solar panel 50 is again sandwiched between the support portion 11 and the holding portion 13a of the fixing bracket 13 on one end side. Slide the fixing bracket 13 and fully tighten the two screws 13c near the center.

Then, after the two screws 13c near the center are fully tightened, the fixing bracket 13 on one end side is further fixed to the support portion 11 with the two outer screws 13c, so that the one end portion 51 side of the solar panel 50 is further fixed. Fixing (one end side) to the float 10 is completed.

Although not shown, the fixing bracket 14 on the other end side is composed of a lower bracket whose one end side is arranged on the lower side of the solar panel 50 and an upper metal fitting whose one end side is arranged on the upper side of the solar panel 50. The other end side of the lower metal fitting and the upper metal fitting is a screw, and is fastened together with the mounting portion 19 to which the fixing metal fitting 14 on the other end side is attached.

In this way, if the lower metal fitting and the upper metal fitting are fixed together with the screws, the lower metal fitting and the upper metal fitting can be removed from the float 10 simply by removing the screws. Further, when fixing the lower metal fitting and the upper metal fitting to the float 10, it is only necessary to attach a screw.

Therefore, compared to the case where the lower metal fitting and the upper metal fitting are individually fixed to the float 10, the work of attaching and detaching the lower metal fitting and the upper metal fitting can be easily performed, so that when the solar panel 50 breaks down, etc. In addition, the workability of replacing with a new solar panel 50 can be improved.

In the photovoltaic power generation device of the present embodiment, one solar panel 50 is installed on one float 10. This increases the degree of freedom in the layout of the entire float aggregate, and enables a design (layout) that enables efficient power generation.

The float 10 described above is not used alone, but a large number of floats 10 are connected by a passage joint 60 which becomes a passage when performing maintenance or the like as shown in FIG. 5 to form a float aggregate 1 (FIG. 5). 1) is configured.

Specifically, in the float 10, a pair of engaging protrusions 61 that engage with the passage joint 60 are formed on the first end portion 10a side of the float 10 on the side close to the support portion 11, and the passage joint 60 is formed. It has an engaging recess (not shown) that engages with the engaging protrusion 61 on the back surface side.

Further, the float 10 passes a connecting bolt 62 for connecting the passage joint 60 to the second end portion 10b side of the float 10 on the side close to the receiving portion 12 that receives the other end portion 52 side (the other end side) of the solar panel 50. It is provided with a bolt hole 62a. Further, when the float 10 overlaps a part of the second end portion 10b side of the float 10 and a part of the first end portion 10a side, the float 10 also has a second portion on the first end portion 10a side of the float 10. A bolt hole 62b corresponding to the bolt hole 62a on the end portion 10b side is provided.

Then, as shown in FIG. 5, the passage joint 60 includes a bolt hole 62a and a bolt hole 63 corresponding to the bolt hole 62b. Therefore, the passage joint 60 is engaged with the engaging protrusion 61 of the other float 10 with respect to one float 10, and the bolt hole 62b on the first end portion 10a side of the one float 10 and the other float. The bolt hole 62a on the second end portion 10b side of the 10 and the bolt hole 63 of the passage joint 60 are connected by the connecting bolt 62 so that a large number of floats 10 are connected via the passage joint 60. It has become.

As shown in FIG. 5, the passage joint 60 is in a direction orthogonal to the arrangement direction of the floats 10 (see the Z axis) (see the W axis) with respect to the portion connecting the one float 10 and the other float 10. Arranged symmetrically in pairs, one end 60a of one aisle joint 60 (see 60A) is connected to one and the other float 10 described above, while the other end 60b of one aisle joint 60 is one of the other floats 10. And the other connected portion of the float 10.

Further, the other end 60b of the other passage joint 60 (see 60B) provided as a pair is connected to the above-mentioned one and the other float 10, but one end 60a of the other passage joint 60 (see 60B) is another float. It is connected to the connecting portion of one of the floats 10 and the other of the floats 10. In this way, the floats 10 are connected one after another via the passage joint 60 to form the float aggregate 1.

In the photovoltaic power generation device of the present embodiment, the float aggregate 1 configured as described above is rotated on the water to be tracked by the sun, and the power generation efficiency is improved.

6 (A) to 6 (E) show an example of connecting a towing rope for rotating the float assembly 1. Since the float aggregate 1 floats on water and has a small resistance to water, it can be rotated with a small force.

For example, FIG. 6A shows the towing ropes 101, 102, 103, 104 connected to the four corners of the rectangular float assembly 1, and the towing ropes 101, 102 and the towing rope 103 on the long side. This is an example in which 104 are crossed. In this case, if the towing rope 101 and the towing rope 103 are pulled, the float assembly 1 rotates in the clockwise direction. When the towing rope 102 and the towing rope 104 are pulled, the float assembly 1 rotates in the counterclockwise direction. For example, if the float assembly 1 is rotated by operating the towing ropes 101 to 104 with the upper long side of the figure facing north and the lower long side facing south, the solar panel 50 can be turned to the sun. It is possible to track to.

In FIG. 6B, the towing ropes 101, 102, 103, 104 are connected to the four corners of the rectangular float assembly 1, and the towing ropes 101, 102 and the towing ropes 103, 104 are connected on the short side. Is an example of crossing each. When the towing rope 101 and the towing rope 103 are pulled, the float assembly 1 rotates in the counterclockwise direction. When the towing rope 102 and the towing rope 104 are pulled, the float assembly 1 rotates in the clockwise direction.

In FIG. 6C, the towing ropes 101, 102, 103, 104 are connected to the four corners of the rectangular float assembly 1, and the towing ropes 101, 102 on one long side are pulled in opposite directions. This is an example in which the towing ropes 103 and 104 on the other long side are crossed, respectively. When the towing rope 101 and the towing rope 104 are pulled, the float assembly 1 rotates in the counterclockwise direction. When the towing rope 102 and the towing rope 103 are pulled, the float assembly 1 rotates in the clockwise direction.

6 (D) and 6 (E) are examples in which towing ropes are connected to three points of the float assembly 1. In FIG. 6D, the towing rope 101 is connected to the center of one long side of the rectangular float assembly 1, and the towing ropes 102 and 103 are connected to both ends of the other long side to be crossed. This is an example. In FIG. 6E, the towing rope 101 is connected to the center of one long side of the rectangular float assembly 1, and the towing ropes 102 and 103 are connected to both ends of the other long side. This is an example of pulling in the direction opposite to that of the rope 101. In either case, the tow rope 101 connected to the center of the long side is the center, and by pulling either the tow rope 102 or 103, the tow rope 101 connected to the center of the long side is the center. , The float assembly 1 rotates clockwise or counterclockwise.

In the photovoltaic power generation device of the present embodiment, the float aggregate 1 having a low resistance to water is tracked by the sun only by pulling it with a towing rope. The only equipment for tracking the sun is a towing rope and a drive mechanism that pulls it, and since the force required for rotation is small, the drive mechanism may be minimal. Therefore, it is not necessary to make the device large-scale, a simple configuration can be made, and capital investment can be minimized. In addition, since the force required for sun tracking is small, power consumption can be minimized, and in combination with the improvement in power generation efficiency due to sun tracking, the actual power generation efficiency can be significantly improved. can.

Although the embodiments to which the present invention has been applied have been described above, it goes without saying that the present invention is not limited to the above-described embodiments, and various changes may be made without departing from the gist of the present invention. It is possible.

1 Float assembly 10 Float 50 Solar panel 60 Passage joints 101, 102, 103, 104 Towing rope

Claims (5)

It is a photovoltaic power generation device that floats a float aggregate that connects floats for solar panels on the water and tracks it to the sun by traction.
In the float aggregate, the floats adjacent to each other in one direction are plastic molded bodies and are connected by a passage joint installed away from the water surface, and the floats are connected to the water surface in a direction orthogonal to the one direction. It is connected by connecting the eaves-shaped ends that are formed apart from the
As a result, the float aggregates are connected to each other with the floats adjacent to each other at a predetermined distance, and the floats are connected to each other at a predetermined distance.
A photovoltaic power generation device characterized in that a towing rope is connected to the float aggregate, and the float aggregate is rotated on water by pulling the towing rope. The photovoltaic power generation device according to claim 1, wherein the distance between the floats is invariant. The photovoltaic power generation device according to claim 1 or 2 , wherein one solar panel is installed on one float. The photovoltaic power generation device according to any one of claims 1 to 3, wherein the float aggregate has a substantially rectangular shape, and the towing rope is connected to the four corners thereof. Wherein a float assembly is substantially rectangular, said with tow rope is connected to both end positions of the one side, it said that the tow rope is connected to a substantially central position of said sides and opposite sides The photovoltaic power generation device according to any one of claims 1 to 4, wherein

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