Solar panel system

Abstract

To provide a flexible photovoltaic panel system which can be installed at more circumstances.SOLUTION: A photovoltaic panel system comprises a flexible photovoltaic power generation panel and a fixture holding the photovoltaic power generation panel. The fixture has: a holding portion clamping an edge of the photovoltaic power generation panel; a bolt insertion hole which enables a fixing bolt for fixing the fixture to an object to be inserted therein; and a through-hole which enables a wire or a pole to be inserted therein and extends in parallel to the photovoltaic power generation panel in a fitted state where the fixture is fitted to the photovoltaic power generation panel.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a solar panel system. [Background technology]

[0002] In recent years, photovoltaic power generation systems that generate electricity using solar energy have rapidly become popular from the perspectives of environmental protection, resource conservation, and CO2 reduction, and photovoltaic power generation arrays, in which multiple photovoltaic panels are arranged horizontally and vertically in a flat manner to generate greater amounts of power, have become common.

[0003] Conventionally, devices for attaching flexible photovoltaic power generation modules to folded-plate roofs have been proposed (for example, Patent Document 1). This technology comprises one or more central support rails attached longitudinally to the central portion of the width direction on the back surface of the photovoltaic power generation module, a central support rail fixture fixed to the folded-plate roof to enable the central support rail to be attached to the folded-plate roof, and a pair of end support rails fixed to the folded-plate roof to clamp and support both ends of the photovoltaic power generation module in the width direction.

[0004] Also, a towable energy storage chamber including a towing vehicle body, a roll-up flexible sealed solar power generation device, and an electrical system has been proposed (for example, Patent Document 2). In this technology, the roll-up flexible sealed solar power generation device is installed inside the towing vehicle body and includes a winding machine and a roll-up flexible solar power generation strip, the roll-up flexible solar power generation strip is wound around the winding machine, and the electrical system is connected to the roll-up flexible solar power generation strip. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-150239 [Patent Document 2] Japanese Patent Application Publication No. 2019-9990 Summary of the Invention [Problem to be solved by the invention]

[0006] Flexible solar panels are relatively lightweight, but in order to secure panels of a certain size to the installation location, they must be mounted on a rack, just like conventional flat panels. The object of the present invention is to provide a flexible solar panel system that can be installed in a wider range of environments. [Means for solving the problem]

[0007] The solar panel system includes a flexible solar panel and a fixture that holds the solar panel. The fixture has a holder that clamps the edge of the solar panel, a bolt insertion hole through which a fixing bolt for fixing the fixture to an object can be inserted, and a through-hole that extends parallel to the solar panel when the fixture is attached to the solar panel and through which a wire or a pole can be inserted.

[0008] The holding portion may clamp the solar panel by tightening the fastening bolts, and may have a protruding pin that penetrates into the edge of the front or back surface of the solar panel by tightening.

[0009] The holding portion includes a first holding portion that holds the front side of the solar panel and a second holding portion that holds the back side of the solar panel, and the protruding pin is attached to the solar panel of the first holding portion. The fastening bolt may be provided at a position where the first holding portion contacts the front surface of the photovoltaic panel or at a position where the second holding portion contacts the rear surface of the photovoltaic panel, and the fastening bolt fastens the first holding portion and the second holding portion together.

[0010] Furthermore, the through-hole may be provided at a position overlapping with the solar power generation panel in a plan view seen from a direction perpendicular to the solar power generation panel.

[0011] The contents described in the Summary of the Invention may be combined as much as possible without departing from the objectives and technical ideas of the present invention. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a flexible solar panel system that can be installed in a wider range of environments. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing an example of a solar power generation device installed using rail members. [Figure 2] FIG. 2 is a perspective view showing an example of a solar power generation device installed using wires. [Figure 3] FIG. 3 is a perspective view partially showing the periphery of the mounting fixture for the solar power generation device. [Figure 4] FIG. 4 is an exploded perspective view partially showing the periphery of the mounting fixture for the solar power generation device. [Figure 5] FIG. 5 is a diagram for explaining the mounting fixture. [Figure 6] FIG. 6 is a bottom view of the first holding part. DETAILED DESCRIPTION OF THE INVENTION

[0014] Next, an embodiment of the present invention will be described with reference to the drawings. The following description is an example, and the present invention is not limited to the following content.

[0015] FIG. 1 is a perspective view showing an example of a solar panel system 1 installed using rail members. FIG. 2 is a perspective view showing an example of a solar panel system 1 installed using wires. The solar panel system 1 includes a flexible solar panel 2 and a mounting fixture 3 for mounting the solar panel 2. The solar panel 2 is a flexible sheet made by stacking solar cells 21, which generate electricity through the photovoltaic effect, on a substrate such as POE (Polyolefin Elastomer), and then compressing (e.g., laminating) the solar panel 2 with a sealing material such as a resin with relatively high light transmittance. The mounting fixture 3 can secure the solar panel 2 to a mounting target 4, such as a frame or a building roof, or can suspend the panel 2 in the air or at any desired location using a wire 7. In the example shown in FIG. 1, the mounting fixture 3 clamps the edge of the solar panel 2 and is fixed to the mounting target 4 installed at the seam 51 of a folded-plate roof 5. In the example shown in FIG. 2, the mounting fixture 3 clamps the edge of the solar panel 2 and suspends the panel 2 with a wire 7 inserted therethrough. The number of solar panels 2 included in the solar panel system 1 is not particularly limited. Furthermore, the number of mounting fixtures 3 used to install one solar panel 2 is not limited to four. The solar panels 2 are wired via a junction box 6 or the like to transmit power.

[0016] Fig. 3 is a perspective view partially showing the periphery of the mounting fixture 3 of the solar panel system 1. Fig. 4 is an exploded perspective view partially showing the periphery of the mounting fixture 3 of the solar panel system 1. As indicated by the arrows in Figs. 3 and 4, for convenience, in the state in which the solar power generation panel 2 and the mounting fixture 3 are connected (hereinafter referred to as the "mounted state"), the front side of the solar power generation panel 2 will be referred to as the top, the back side as the bottom, the longitudinal direction of the solar power generation panel 2 as the left and right, and the short side direction of the solar power generation panel 2 as the front and back. In particular, with regard to the mounting fixture 3, the direction toward the outside of the solar power generation panel 2 in the mounted state will be referred to as the front, and the direction toward the inside of the solar power generation panel 2 as the rear.

[0017] The solar panel 2 is, for example, a rectangular flexible sheet in which a plurality of solar cells 21 electrically connected in series are sealed with a sealing material, and an edge portion 22 is formed on the periphery of the solar panel 2 by the substrate and the sealing material. The solar cell 21 may be, for example, a silicon-based solar cell such as a single crystal silicon type, or a compound-based solar cell such as a chalcopyrite-based solar cell or a CIGS (Cu, In, Ga, Se)-based solar cell. It is a component that converts light energy into electricity by utilizing the photovoltaic effect. The edge portion 22 refers to an outer frame of a predetermined width that is made of a resin such as POE.

[0018] The fixture 3 includes a first holding portion 31 and a second holding portion 32. The fixture 3 can be made of a metal such as aluminum, but the material is not particularly limited. FIG. 5 is a diagram for explaining the fixture 3. (A) of FIG. 5 is a front view of the fixture 3. (B) of FIG. 5 is a right side view of the fixture 3. Also, FIG. 6 is a bottom view of the first holding portion 31.

[0019] The first holding portion 31 is a stepped, flat-plate-shaped member that holds the front side of the solar panel 2. The second holding portion 32 is a rectangular parallelepiped-shaped member that holds the back side of the solar panel 2. The first holding portion 31 and the second holding portion 32 are connected by tightening bolts 33 that fasten them together. The number of tightening bolts 33 is not particularly limited, but in the example of FIG. 4, the first holding portion 31 and the second holding portion 32 are connected by two tightening bolts 33 to prevent them from rotating relative to each other. The first holding portion 31 and the second holding portion 32 are connected to a slide member 45 (described later) of the mounting object 4, which is the mounting object, by using a fixing bolt 34. The first holding portion 31 has a bolt insertion hole 311 through which the tightening bolt 33 is inserted and a bolt insertion hole 312 through which the fixing bolt 34 is inserted. The bolt insertion holes 311 and 312 extend in the vertical direction (a direction perpendicular to the solar panel 2 in the attached state). The first holding portion 31 has a first bottom surface portion 313 and a second bottom surface portion 314 on its bottom surface, which is thinner than the first bottom surface portion 313, and is stepped. The height of the step is the same as or approximately the same as the thickness of the solar panel 2, and the solar panel 2 can be sandwiched between the second bottom surface portion 314 and the second holding portion 32. As shown in FIG. 6 , the second bottom surface portion 314 is provided with a conical protruding pin 315 that protrudes downward. The protruding pin 315 can be made of a metal such as stainless steel, but the material is not particularly limited. When the first holding part 31 and the second holding part 32 are fastened together by tightening the fastening bolts 33 or the fixing bolts 34, the solar panel 2 can be clamped between the first holding part 31 and the second holding part 32, and the protruding pins 315 penetrate the edge part 22 of the solar panel 2, thereby suppressing misalignment of the solar panel 2 with respect to the mounting fixture 3. In particular, if the protruding pins 315 open the edge part 22 of the solar panel 2, the solar panel 2 can be securely held. There is no particular limitation on the number of protruding pins 315, but in the example of FIG. 6, two protruding pins 315 are provided, which also suppresses rotation of the solar panel 2 with respect to the mounting fixture 3.

[0020] The second holding portion 32 is a rectangular parallelepiped member whose planar shape is the same or substantially the same as that of the first holding portion 31. The second holding portion 32 also has a bolt insertion hole 321 through which the tightening bolt 33 is inserted and a bolt insertion hole 322 through which the fixing bolt 34 is inserted. The bolt insertion hole 321 and the bolt insertion hole 322 also extend in the vertical direction. A female thread is formed in the bolt insertion hole 321 and is threadedly engaged with the tightening bolt 33. The second holding portion 32 also has a through hole 323 extending in the horizontal direction. The wire 7, shown by the two-dot chain line in FIGS. 3 and 4, can be inserted through the through hole 323. In the installed state, the through hole 323 is positioned so as to overlap the solar power generation panel 2 in a plan view seen from a direction perpendicular to the solar power generation panel 2 (from above). In other words, the second bottom surface portion 314 of the first holding portion 31, which is thinner than the first holding portion 31, and the through-hole 323 through which the wire 7 is inserted are formed at positions that overlap in the vertical direction, and when the solar panel 2 is sandwiched between the second bottom surface portion 314 of the first holding portion 31 and the second holding portion 32, the through-hole 323 overlaps with the solar panel 2 in a plan view. The wire 7 is positioned on the back side of the solar panel 2. In the examples of Figures 4 and 5, the threaded tip of the fixing bolt 34 protrudes from the mounting fixture 3 and is screwed into the slide member 45, but when the solar panel 2 is suspended using the wire 7, the slide member 45 and the fixing bolt 34 do not have to be used.

[0021] The attachment object 4 includes a rail member 41, a first clamping member 42, a second clamping member 43, an angle member 44, and a slide member 45. The rail member 41 is a horizontal member that is spanned across the roof of a building or a platform. A guide groove 411 is provided on the upper surface of the rail member 41 along the longitudinal direction. A pair of side walls 412 of the guide groove 411 each have a locking piece 413 (413A, 413B) that protrudes toward the inside of the guide groove 411. The locking piece 413A is provided at the upper end of the side wall 412. On the other hand, the locking piece 413B is provided at a position slightly lower than the upper end of the side wall 412 and is positioned relatively lower than the locking piece 413A. The two locking pieces 413 each extend along the longitudinal direction of the rail member 41 (guide groove 411). Furthermore, fixing grooves 414 are formed along the longitudinal direction on the side surfaces of the rail member 41. The fixing grooves 414 protrude laterally from the rail member 41 and have their tips bent and extending in at least one direction, either upward or downward. A plurality of fixing grooves 414 are formed on each of the left and right side walls 412.

[0022] The first clamping member 42 and the second clamping member 43 constitute a clamp-shaped clamping member that clamps the seam portion 51 of the folded-plate roof 5. The first clamping member 42 has a support portion 421 that supports the rail member 41, a first abutting portion 422 that abuts against one side of the seam portion 51, a first connecting portion 423 that connects the support portion 421 and the first abutting portion 422 and is provided with a bolt hole through which a bolt for connecting to the second clamping member is inserted, and a recessed portion 424 that is recessed in a curved shape and for rotatably connecting an end of the second clamping member. The second clamping member 43 has a curved outer shape and includes a convex portion 431 rotatably connected to the concave portion 424, a second abutting portion 432 abutting the other side of the seam portion 51, and a second connecting portion 433 that connects the convex portion 431 and the second abutting portion 432 and has a bolt hole through which a bolt 46 for connecting to the first clamping member is inserted. The first clamping member 42 and the second clamping member 43 are connected using the bolt 46 with the seam portion 51 sandwiched between the first abutting portion 422 and the second abutting portion 432, for example, and can be fixed to a folded-plate roof 5 or the like.

[0023] The angle member 44 is a plate-like member bent into an L shape that connects the rail member 41 and the first clamping member 42. A first surface 441 of the angle member 44 is placed on the support portion 421 of the first clamping member 42, and has a bolt hole through which a bolt 47 is inserted to connect the angle member 44 to the support portion 421. A second surface 442 of the angle member 44 has an engagement groove 443 that protrudes laterally from the second surface and has a tip that bends downward and extends. The engagement groove 443 engages with the fixing groove 414 of the rail member 41, and fixes the rail member 41 on the support portion 421 of the first clamping member 42.

[0024] The slide member 45 has a female thread portion 451 and is a nut-shaped member that is connected to the tip side of the male thread portion of the fixing bolt 34. The slide member 45 is configured to be slidable within the guide groove 411 of the rail member 41, which allows the slide member 45 to be disposed at any position in the longitudinal direction of the rail member 41. The locking pieces 413 provided on both sides of the guide groove 411 are provided in a staggered manner, so that by tilting the posture of the slide member 45, the slide member 45 can be slid into the guide groove 411 from the upper side of the rail member 41 at any position in the longitudinal direction of the rail member 41. The slide member 45 also has engagement portions 452 (452A, 452B) that protrude in a staggered manner on its side surface. The difference in the vertical positions of the two engaging portions 452 corresponds to the difference in the vertical positions of the two locking pieces 413 provided at different levels on both sides of the guide groove 411, and the mounting fixture 3 and the rail member 41 can be fastened together by screwing the fixing bolt 34 and the slide member 45 together. This can be done.

[0025] <Other> The configurations of the above-described embodiments are merely examples, and can be combined or modified as much as possible without departing from the scope and technical spirit of the present invention. For example, the mounting fixture 3 may be attached to the short side of the solar panel 2. Furthermore, the through-hole 323 of the second holding portion 32 may extend parallel or approximately parallel to the solar panel 2 in the mounted state. Furthermore, the solar panel system 1 may be supported by a rod-shaped pole instead of the wire 7. Furthermore, the mounting object 4 is not limited to being installed on the roof of a building, and the rail member 41 may, for example, constitute part of a mounting frame. Furthermore, the mounting fixture 3 may have a step portion for clamping the solar panel 2 on the second holding portion 32 instead of the first holding portion 31, or on both the first holding portion 31 and the second holding portion 32. The protruding pin 315 may also be provided on the second holding portion 32 instead of the first holding portion 31, or on both the first holding portion 31 and the second holding portion 32.

[0026] <Effects> The mounting fixture 3 allows the solar panel 2 to be installed on a standard mounting frame or the roof of a building. In locations where it is difficult to install a mounting object for bolt fastening, the solar panel 2 can also be suspended in midair using the wire 7. Supporting the flexible solar panel 2 using the wire 7 facilitates installation of a solar power generation device on a curved roof or on a hanging banner lifting device attached to the wall of a building. Furthermore, in the installed state, the through-hole 323 is positioned to overlap the solar panel 2 in a plan view of the solar panel 2 from above. Therefore, the wire 7 is located behind the solar panel 2 and does not cast a shadow on the solar panel 2, thereby improving power generation efficiency and enhancing the design of the solar panel system 1. The solar panel 2 may also employ a metal wrap-through (MWT) back contact structure. This structure also prevents the shadow of the bus bar from being cast on the solar panel 2, improving power generation efficiency and enhancing the design of the solar panel system 1. [Explanation of symbols]

[0027] 1: Solar panel system 2: Solar panels 21: Solar cell 22: Edge 3: Mounting fixture 31: 1st holding part 311, 312: Bolt insertion holes 313: 1st bottom part 314:Second bottom part 315: Protruding pin 32:Second holding part 321, 322: Bolt insertion holes 323:Through hole 33: Fastening bolt 34: Fixing bolt 4: Mounting object 41: Rail component 42: First clamping member 43: Second clamping member 44: Angle member 45: Slide member 46, 47: Bolt 5: Folded roof 51: Goby Club 6: Junction box 7: Wire (pole)

Claims

1. Flexible solar panels and a mounting fixture for holding the solar panel; Equipped with The mounting fixture has a holding portion that clamps the edge of the solar panel, a bolt insertion hole through which a fixing bolt for fixing the mounting fixture to an object can be inserted, and a through hole that extends parallel to the solar panel when the mounting fixture is attached to the solar panel and through which a wire or a pole can be inserted. Solar panel system.

2. The holding portion clamps the solar panel by tightening the tightening bolts, and has a protruding pin that penetrates into an edge of the front or back surface of the solar panel by tightening. The solar panel system of claim 1 .

3. the holding portion includes a first holding portion that holds a front side of the solar panel and a second holding portion that holds a back side of the solar panel, the protruding pin is provided at a position where the first holding portion contacts the front surface of the solar panel or where the second holding portion contacts the back surface of the solar panel, The fastening bolt fastens the first holding portion and the second holding portion together. The solar panel system according to claim 2 .

4. In a plan view seen from a direction perpendicular to the solar panel, the through-hole is provided at a position overlapping the solar panel. The solar panel system according to any one of claims 1 to 3.

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