JP2018108772A - Photovoltaic power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation device capable of solar tracking in a simple composition, having no need for great equipment investment and capable of suppressing power consumption for solar tracking.SOLUTION: A photovoltaic power generation device has a float cluster having floats for solar panels connected float on water and track the sun by traction. The float cluster has each float connected with prescribed spacing from an adjacent float. By forming gaps in between connected respective floats, resistance from water can be reduced and rotation is possible with a small force. Furthermore, the spacing between floats is invariable. In addition, there is one solar panel on one float.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a solar power generation apparatus that generates power using a solar panel, and more particularly, to a solar power generation apparatus in which a solar panel is installed on a float aggregate floated on water.

  In a photovoltaic power generation apparatus 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, wall surfaces, grounds, etc. of buildings, but in recent years, they have also been installed on water such as idle ponds and lakes.

  When installing a solar panel 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 Patent Laying-Open No. 2015-217771

  By the way, in solar power generation, the orientation of the solar panel is important, and power generation efficiency is significantly increased by tracking the solar panel to the sun. Then, although the solar power generation system which has a solar tracking mechanism is examined in various fields, there are many large-scale things and a great capital investment is required. In addition, there is a problem that a large amount of generated power is consumed for solar tracking, and the power generation efficiency cannot always be sufficiently improved.

  The present invention has been proposed in view of such a conventional situation, and is capable of solar tracking with a simple configuration, does not require much capital investment, and suppresses power consumption for solar tracking. An object of the present invention is to provide a solar power generation apparatus that can perform the above-described operation.

  In order to achieve the above-mentioned object, a photovoltaic power generation apparatus according to the present invention is a photovoltaic power generation apparatus that floats a float assembly connected to a float for a solar panel on the water and tracks the sun by traction. The aggregate is characterized in that each float is connected to an adjacent float with a predetermined distance from each other.

  The solar power generation device of the present invention pulls and rotates a float assembly floated on water to track the sun. Float assemblies floated on water are easier to move than, for example, solar power generation devices installed on the ground, and each float is connected to adjacent floats with 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 simply by towing with a rope, the device configuration is simple, and power consumption for solar tracking is minimized.

  Moreover, in the solar power generation device of this invention, the space | interval between floats is made unchanged. When the interval between the floats changes due to expansion and contraction or the like, the water flow flowing between the floats is affected, and the resistance to water changes. On the other hand, if the distance between the floats is unchanged (constant), the water flow is not affected and the resistance to water is always small.

  Furthermore, in the solar power generation device of the present invention, one solar panel is installed in one float. By installing one solar panel for one float, the degree of freedom in the layout of the entire float assembly is increased, and a design (layout) that enables efficient power generation becomes possible.

  According to the present invention, it is possible to provide a solar power generation apparatus that can perform solar tracking while having a simple configuration, does not require a large facility investment, and can suppress power consumption for solar tracking. Is possible.

It is a schematic perspective view of a float aggregate. It is a schematic perspective view which shows the state in which the solar panel was 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 portion is raised. It is a schematic plan view which shows the state which connected the float with the channel | path joint. (A)-(E) are typical top views which show the example of a connection of the tow rope to a float aggregate | assembly, respectively.

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

  The solar power generation apparatus according to the present embodiment has a solar panel installed on a float floated on water, and a plurality of these are connected to form a float aggregate to be 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 molded with plastic in the same manner as the float 10. They are connected by a passage joint 60 formed as a body.

  Here, the passage joint 60 is coupled to the float 10 on the upper surface of each float 10, and the float 10 is coupled at a predetermined interval in the connecting direction of the passage joint 60, and accordingly, 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-like end portions of the floats 10. Since the eaves-like end is separated from the water surface when the float 10 is floated, gaps are formed between the floats 10 even in this direction (direction perpendicular to the connecting direction by the passage joint 60). become.

  In the float assembly 1 configured as described above, the float assembly 1 is connected by a passage joint 60 formed as a plastic molded body in a predetermined connection direction, and the eaves-like end portions of the float 10 are connected in a direction orthogonal thereto. All the intervals are kept constant (invariable). Accordingly, the resistance to water is always small.

  In the float assembly 1, the float assemblies 1 are connected by the passage joint 60, and the space between the floats 10 can be increased. Since the space between the floats 10 is increased, the float assembly 1 is not easily affected by the waves, and it is possible to prevent the float assembly 1 from inadvertently moving from a floating position. Usually, the float assembly 1 is provided with anchors so as not to move by waves, and is connected to the land. Assuming the difference between high tide and low tide and fluctuation of water volume before and after rainy weather, the mooring is provided with an assembly. If the float assembly 1 moves due to such assobi due to the influence of a wave or the like, it cannot be moved as planned in the solar tracking described later, and it becomes difficult to improve the power generation efficiency. Since the float assembly 1 has a large interval between the floats 10, it is easy to receive a flow of water due to waves or the like and does not move carelessly.

  The solar power generation device of the present embodiment is for tracking the float assembly 1 described above to the sun, and since the float assembly 1 is floated on the water, for example, compared to a case where it is installed on the ground, It can be rotated with a small force and tracked to the sun. Further, a gap is formed between the floats 10 to be connected, and water passes through as shown by arrows in FIG. Therefore, when the float assembly 1 is rotated, the resistance of water can be reduced, and the float assembly 1 can be rotated with a smaller force. In FIG. 1, the arrow is illustrated as passing over the float, but the arrow is for indicating the direction in which water passes, and the actual water flow occurs on the water surface between the floats 10. To do.

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

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

  The float 10 shown in FIGS. 2, 3, and 4 constitutes a float assembly 1 in which a large number of floats 10 are connected by a passage joint 60 (see FIG. 5) to install the solar panel 50. The float aggregate 1 is a part where, for example, several thousand (10,000 in many cases) floats 10 are aggregated. Among the floats 10 used in the float aggregate 1, some floats 10 include The solar panel 50 is not installed, and is used as a passage for performing maintenance and inspection of the solar panel 50. The passage is also used for laying a cable from the solar panel 50.

  It is also important that the float assembly 1 does not move under the influence of wind or the like. For this reason, for example, the float 10 is moored with an anchoring member such as an anchor rope so that the anchoring member such as an anchor rope can be moored by using the float 10 used as a passage where the solar panel 50 is not installed. You may have the structure which can be performed.

  As shown in FIGS. 3 and 4, the float 10 includes a support portion 11 that supports one end portion 51 of the pair of long sides of the solar panel 50 and another end portion 52 on the other long side of the solar panel 50. Receiving portion 12. 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 51 of the solar panel 50 is provided with an aluminum pedestal supported by the support 11, and this pedestal is supported on the support 11.

  On the other hand, the float 10 includes a fixing metal 13 on one end side that fixes the one end 51 side of the solar panel 50 to the support portion 11. And the solar panel 50 is fixed by being pinched | interposed between the fixing metal fitting 13 and the support part 11 of this one end side. By using the metal fixing bracket 13, the solar panel 50 can be more firmly held, unlike the holding by elasticity such as elastomer.

  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 includes 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. The other end of the solar panel 50 is fixed to the float 10 by the fixing bracket 14.

  The float 10 is manufactured, for example, by blow molding in which a molten cylindrical parison is sandwiched between a plurality of divided molds, and various thermoplastic resins can be used as a molding material. Polyolefin resins such as polypropylene and polypropylene can be suitably used.

  As shown in FIGS. 3 and 4, the float 10 has a rectangular outer shape (rectangular shape), and includes a side wall portion 15 including a parting line PL, a surface wall 16 positioned on the upper side, It has the structure which has the back part wall 17 located in the side, and has the hollow part which accommodates gas (air etc.) inside.

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

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

  A receiving rib that receives the one end 51 side of the solar panel 50 is provided on the side 22 that faces the one end 24 that serves as the hinge of the support 11. Specifically, the receiving rib portion is provided with a step structure with the back wall 17 approaching the front wall 16 side, and when the solar panel 50 is installed on the float 10, one end 51 of the solar panel 50 is provided. The one end 51 side of the solar panel 50 does not shift to the one end side beyond the support portion 11.

  When the support portion 11 is configured in this manner, the opening portion 26 is positioned in the vicinity of the support portion 11. However, the inner wall surface of the opening portion 26 serves as a wall surface that suppresses structural bending. Is unlikely to occur. Further, since the support portion 11 is connected to the main body of the float 10 with a hinge structure, even if the float 10 is bent, the support portion 11 is not easily affected. In combination with the fact that the rigidity is increased by matching the surface wall 16 with little separation, the surface wall 16 is prevented from being deformed by the influence of bending.

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

  The fixing bracket 13 on one end side is a side opposite to 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 that is provided so as to extend from the fixed portion 13b in a direction substantially orthogonal to the fixed portion 13b and has one surface for sandwiching the solar panel 50 with the support portion 11. This is a fixing bracket.

  As shown in FIG. 2, the fixing bracket 13 on one end side is screwed to the support portion 11 with four screws 13c. A screw hole through which the screw 13c provided in the fixing metal 13 on the side passes is a long hole in the vertical direction.

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

  Accordingly, the fixing bracket 13 on one end side is temporarily fixed to the support portion 11 so that a gap for inserting the solar panel 50 between the holding portion 13a of the fixing bracket 13 on one end side and the support portion 11 is formed. After the fixing bracket 13 is slid and the solar panel 50 is inserted into the gap, the solar panel 50 is again inserted on the one end side so that the solar panel 50 is clamped by the support portion 11 and the clamping portion 13a of the fixing bracket 13 on the one end side. The fixing bracket 13 is slid and the two screws 13c closer to the center are finally tightened.

  Then, after the two screws 13c closer to the center are finally tightened, the fixing bracket 13 on one end side is further fixed to the support portion 11 with the two outer screws 13c. Fixing of the (one end side) to the float 10 is completed.

  Although not shown in the figure, the other end side fixing bracket 14 is composed of a lower bracket whose one end is disposed below the solar panel 50 and an upper bracket whose one end is disposed above 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 a mounting portion 19 for attaching the fixing metal fitting 14 on the other end side.

  As described above, when the lower metal fitting and the upper metal fitting are fixed together with screws, the lower metal fitting and the upper metal fitting can be removed from the float 10 simply by removing the screws. Further, when the lower metal fitting and the upper metal fitting are fixed to the float 10, only screws are attached.

  Therefore, compared to the case where the lower metal fitting and the upper metal fitting are individually fixed to the float 10, the attachment and removal of the lower metal fitting and the upper metal fitting can be performed easily, 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 solar power generation apparatus of this embodiment, one solar panel 50 is installed in one float 10. Thereby, the freedom degree of the layout of the whole float assembly increases, and the design (layout) which can generate electric power efficiently becomes possible.

  The float 10 described above is not used alone, but a large number of floats 10 are connected by a passage joint 60 that becomes a passage when maintenance or the like is performed as shown in FIG. 1).

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

  Moreover, the float 10 passes the connection bolt 62 which connects the channel | path joint 60 to the 2nd end part 10b side of the float 10 near the receiving part 12 which receives the other end part 52 side (other end side) of the solar panel 50. A bolt hole 62a is provided. Furthermore, when the float 10 is configured such that a part on the second end 10b side of the float 10 and a part on the first end 10a side are overlapped, the second end 10a side of the float 10 is also second Bolt holes 62b corresponding to the bolt holes 62a on the end 10b side are provided.

  As shown in FIG. 5, the passage joint 60 includes bolt holes 63 corresponding to the bolt holes 62a and the bolt holes 62b. Accordingly, the passage joint 60 is engaged with the engagement protrusion 61 of the one float 10 with respect to the one float 10, and the bolt hole 62 b on the first end 10 a side of the one float 10 and the other float 10. The bolt holes 62a on the second end portion 10b side of the ten and the bolt holes 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 (see the W axis) perpendicular to the arrangement direction of the floats 10 (see the Z axis) with respect to the portion connecting the one float 10 and the other float 10. A pair of symmetrically arranged, one end 60a of one passage joint 60 (see 60A) is connected to one and the other float 10 described above, while the other end 60b of one passage joint 60 is one of the other floats 10 And connected to the connecting portion of the other float 10.

  In addition, the other end 60b of the other passage joint 60 (see 60B) provided as a pair is connected to the one and the other float 10 described above, but one end 60a of the other passage joint 60 (see 60B) is a separate float. 10 is connected to the connecting portion of the other float 10. In this way, the floats 10 are connected one after another through the passage joint 60, and the float assembly 1 is configured.

    In the solar power generation device of the present embodiment, the float assembly 1 configured as described above is tracked by the sun by rotating on the water to improve power generation efficiency.

  6A to 6E show examples of connecting towing ropes for rotating the float assembly 1. Since the float assembly 1 floats in water and has a low resistance to water, it can be rotated with a small force.

  For example, FIG. 6A shows that the tow ropes 101, 102, 103, 104 are connected to the four corners of the rectangular float assembly 1, and the tow ropes 101, 102 and the tow ropes 103, This is an example in which 104 is crossed. In this case, when the tow rope 101 and the tow rope 103 are pulled, the float assembly 1 rotates in the clockwise direction. When the pulling rope 102 and the pulling rope 104 are pulled, the float assembly 1 rotates in the counterclockwise direction. For example, when the float assembly 1 is rotated by operating the tow ropes 101 to 104 with the upper long side facing north and the lower long side facing south, Can be tracked.

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

  6C, the tow ropes 101, 102, 103, 104 are connected to the four corners of the rectangular float assembly 1, and the tow ropes 101, 102 on one long side are pulled in opposite directions. In this example, the other long side pulling ropes 103 and 104 are crossed. When the tow rope 101 and the tow rope 104 are pulled, the float assembly 1 rotates in the counterclockwise direction. When the pulling rope 102 and the pulling rope 103 are pulled, the float assembly 1 rotates in the clockwise direction.

  6 (D) and 6 (E) are examples in which the tow rope is connected to three places of the float assembly 1. FIG. 6D shows that the tow rope 101 is connected to the center of one long side of the rectangular float assembly 1 and the tow ropes 102 and 103 are connected to both ends of the other long side to cross. This is an example. FIG. 6E shows that the tow rope 101 is connected to the center of one long side of the rectangular float assembly 1 and the tow ropes 102 and 103 are connected to both ends of the other long side. In this example, the rope 101 is pulled in the opposite direction. In any case, by pulling one of the tow ropes 102 and 103 around the tow rope 101 connected to the center of the long side, the tow rope 101 connected to the center of the long side is centered. The float assembly 1 rotates in the clockwise direction or the counterclockwise direction.

  In the solar power generation device of the present embodiment, the float assembly 1 with low water resistance is tracked by the sun simply by pulling it with a tow rope. The equipment for tracking the sun is only the tow rope and the drive mechanism for pulling it, and the force required for rotation is small, so the drive mechanism is also minimal. Therefore, it is not necessary to make the apparatus large, a simple configuration can be achieved, and capital investment can be minimized. In addition, since the power required for solar tracking is small, power consumption is minimized, and combined with the improvement in power generation efficiency by solar tracking, the substantial power generation efficiency can be greatly improved. it can.

  As mentioned above, although embodiment which applied this invention has been described, it cannot be overemphasized that this invention is not what is limited to the above-mentioned embodiment, In the range which does not deviate from the summary of this invention, a various change can be added. Is possible.

1 Float Assembly 10 Float 50 Solar Panel 60 Passage Joint 101, 102, 103, 104 Tow Rope

Claims (6)

A solar power generation device that floats a float assembly connected to a float for a solar panel on the water and tracks the sun by towing,
In the solar power generation apparatus, the float aggregate is connected to each of the adjacent floats at a predetermined interval.   The photovoltaic power generation apparatus according to claim 1, wherein an interval between the floats is unchanged.   The photovoltaic power generation apparatus according to claim 2, wherein adjacent floats are connected by a passage joint which is a plastic molded body, and the passage joint is installed apart from the water surface.   The solar power generation apparatus according to any one of claims 1 to 3, wherein one solar panel is installed in one float.   The solar power generation device according to any one of claims 1 to 4, wherein the float aggregate is substantially rectangular, and tow ropes are connected to four corners thereof. The float aggregate has a substantially rectangular shape, and a tow rope is connected to both end positions of one side thereof, and a tow rope is connected to a substantially central position of the side opposite to the side. The solar power generation device according to any one of claims 1 to 4.

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