Solar panel system

Abstract

We provide a flexible solar panel system that can be installed in a wider range of environments. [Solution] The solar panel system comprises a flexible solar power generation panel and a mounting fixture for holding the solar power generation panel. The mounting fixture also has a holding portion that clamps the edge of the solar power generation 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 power generation panel when the mounting fixture is attached to the solar power generation panel and through which a wire or pole can be inserted.

Description

Technical Field

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

Background Art

[0002] In recent years, from the viewpoints of environmental protection, resource conservation, CO2 reduction, etc., solar power generation systems that generate electricity using solar energy have been rapidly spreading, and solar power generation arrays in which multiple solar power generation panels are arranged side by side in a plane vertically and horizontally have become common in order to obtain a larger power generation amount.

[0003] Conventionally, a device for attaching a flexible solar power generation module to a folded plate roof has been proposed (for example, Patent Document 1). This technology includes one or more central support rails attached along the longitudinal direction at the central portion in the width direction on the back surface of the solar power generation module, a central support rail fixing tool fixed to the folded plate roof in order to attach the central support rail to the folded plate roof, and a pair of end support rails fixed to the folded plate roof for fixedly supporting both end portions in the width direction of the solar power generation module in a sandwiched state.

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

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

[0006] Flexible solar panels are relatively lightweight, but to secure panels of a certain size to their installation site, they still required mounting on a frame, similar to conventional flat panels. The present invention aims 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 comprises a flexible solar panel and a mounting fixture for holding the solar panel. The mounting fixture includes a holding portion that clamps the edge of the solar panel, a bolt insertion hole through which fixing bolts for securing 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, through which a wire or pole can be inserted.

[0008] Furthermore, the holding portion may be designed to clamp the solar power generation panel by tightening the fastening bolts, and may also have protruding pins that pierce the edges of the front or back surface of the solar power generation panel when tightened.

[0009] Furthermore, the holding portion includes a first holding portion that holds the front side of the solar power generation panel and a second holding portion that holds the back side of the solar power generation panel, and the protruding pin is the first holding portion of the solar power generation panel The fastening bolts may be provided in a position that contacts the surface of the first retaining part or in a position that contacts the back surface of the solar power generation panel of the second retaining part, and the fastening bolts may be provided to fasten the first retaining part and the second retaining part together.

[0010] Furthermore, in a plan view taken from a direction perpendicular to the solar power generation panel, the through-hole may be positioned to overlap with the solar power generation panel.

[0011] Furthermore, the contents described in the means for solving the problem can be combined as much as possible without departing from the problem or technical idea of ​​the present invention. [Effects of the Invention]

[0012] According to the present invention, a flexible solar panel system that can be installed in a wider range of environments can be provided. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view showing an example of a solar power generation system installed using rail components. [Figure 2] Figure 2 is a perspective view showing an example of a solar power generation system installed using wires. [Figure 3] Figure 3 is a partial perspective view showing the area around the mounting bracket for the solar power generation system. [Figure 4] Figure 4 is an exploded perspective view showing a portion of the area around the mounting bracket for the solar power generation system. [Figure 5] Figure 5 is a diagram illustrating the mounting hardware. [Figure 6] Figure 6 is a bottom view of the first retaining section. [Modes for carrying out the invention]

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

[0015] Figure 1 is a perspective view showing an example of a solar panel system 1 installed using rail members. Figure 2 is a perspective view showing an example of a solar panel system 1 installed using wires. The solar panel system 1 comprises a flexible solar power generation panel 2 and a mounting fixture 3 for attaching the solar power generation panel 2. The solar power generation panel 2 is a sheet in which solar cells 21 that generate electricity by the photovoltaic effect are laminated onto a substrate such as POE (Polyolefin Elastomer) and compressed (e.g., laminated) with a sealing material such as a resin with relatively high light transmittance, and is flexible. The mounting fixture 3 can fix the solar power generation panel 2 to an object 4 installed on a frame or the roof of a building, and can also suspend it in the air or at any other position by a wire 7. In the example in Figure 1, the mounting fixture 3 clamps the edge of the solar power generation panel 2 and is fixed to an object 4 installed on the seam 51 of a corrugated metal roof 5. In the example in Figure 2, the mounting fixture 3 clamps the edge of the solar power generation panel 2 and is suspended by a wire 7 inserted through it. The number of solar panels 2 in the solar panel system 1 is not particularly limited. Also, the number of mounting brackets 3 used to install one solar panel 2 is not limited to four. The solar panels 2 are wired and transmit power via a junction box 6, etc.

[0016] Figure 3 is a partial perspective view showing the area around the mounting bracket 3 of the solar panel system 1. Figure 4 is an exploded perspective view showing the area around the mounting bracket 3 of the solar panel system 1. For convenience, as indicated by the arrows in Figures 3 and 4, in the state in which the solar power generation panel 2 and the mounting bracket 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 left and right, and the short direction of the solar power generation panel 2 as front and back. In particular, for the mounting bracket 3, in the mounted state, the direction toward the outside of the solar power generation panel 2 will be referred to as the front, and the direction toward the inside of the solar power generation panel 2 will be referred to as the rear.

[0017] The photovoltaic 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. An edge portion 22 is formed at the periphery of the photovoltaic panel 2 by a base material or a sealing material. The solar cell 21 is, for example, a silicon-based such as a single crystal silicon type, or a compound-based such as a chalcopyrite type or a CIGS (Cu, In, Ga, Se) type, a member that converts light energy into electric power by utilizing the photovoltaic effect. The edge portion 22 refers to an outer frame having a predetermined width formed 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 formed of a metal such as aluminum, for example, 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. Further, FIG. 6 is a bottom view of the first holding portion 31.

[0019] The first holding part 31 is a flat plate-like member with a step, and holds the front surface side of the photovoltaic panel 2. The second holding part 32 is a rectangular parallelepiped member, and holds the back surface side of the photovoltaic panel 2. The first holding part 31 and the second holding part 32 are connected by a fastening bolt 33 for fastening both of them. The number of the fastening bolts 33 is not particularly limited, but in the example of FIG. 4, the first holding part 31 and the second holding part 32 are connected by two fastening bolts 33 so as not to rotate relative to each other. Further, the first holding part 31 and the second holding part 32 are connected to a slide member 45 (to be described later) of the attachment object 4, which is the attachment object, using a fixing bolt 34. The first holding part 31 has a bolt insertion hole 311 through which the fastening bolt 33 is inserted and a bolt insertion hole 312 through which the fixing bolt 34 is inserted. The bolt insertion hole 311 and the bolt insertion hole 312 extend in the vertical direction (the direction perpendicular to the photovoltaic panel 2 in the attached state). Further, the first holding part 31 has, on its bottom surface, a first bottom surface part 313 and a second bottom surface part 314 whose thickness is thinner than that of the first bottom surface part 313 of the first holding part 31, and is provided with a step. The height of the step is the same as or substantially the same as the thickness of the photovoltaic panel 2, and the photovoltaic panel 2 can be sandwiched between the second bottom surface part 314 and the second holding part 32. Further, as shown in FIG. 6, a conical protruding pin 315 protruding downward is provided on the second bottom surface part 314. The protruding pin 315 can be formed of a metal such as stainless steel, for example, but the material is not particularly limited. When the first holding part 31 and the second holding part 32 are fastened by tightening the fastening bolt 33 or the fixing bolt 34, the photovoltaic panel 2 can be sandwiched between the first holding part 31 and the second holding part 32, and the protruding pin 315 pierces into the edge part 22 of the photovoltaic panel 2, suppressing the displacement of the photovoltaic panel 2 with respect to the fixture 3. In particular, if the protruding pin 315 perforates the edge part 22 of the photovoltaic panel 2, the photovoltaic panel 2 can be reliably held. The number of the protruding pins 315 is not particularly limited, but in the example of FIG. 6, two protruding pins 315 are provided, and the rotation of the photovoltaic panel 2 with respect to the fixture 3 is also suppressed.

[0020] The second retaining portion 32 is a rectangular parallelepiped member whose planar shape is the same as or substantially the same as that of the first retaining portion 31. The second retaining portion 32 also has a bolt insertion hole 321 through which a tightening bolt 33 is inserted, and a bolt insertion hole 322 through which a fixing bolt 34 is inserted. Both the bolt insertion holes 321 and 322 extend in the vertical direction. A female thread is formed in the bolt insertion hole 321, which engages with the tightening bolt 33. The second retaining portion 32 also has a through hole 323 that extends in the left-right direction. A wire 7, shown by the dashed line in Figures 3 and 4, can be inserted through the through hole 323. In the installed state, in a plan view taken from a direction perpendicular to the solar power generation panel 2 (from above), the through hole 323 is located in a position that overlaps with the solar power generation panel 2. In other words, the second bottom portion 314, which is thinner than the first holding portion 31, and the through hole 323 through which the wire 7 is inserted are formed in positions that overlap in the vertical direction. When the solar power generation panel 2 is sandwiched between the second bottom portion 314 and the second holding portion 32 of the first holding portion 31, the through hole 323 overlaps with the solar power generation panel 2 in a plan view. Therefore, the wire The wire 7 will be located on the back side of the solar power generation panel 2. In the examples in Figures 4 and 5, the threaded tip of the fixing bolt 34 protrudes from the mounting bracket 3 and is screwed into the sliding member 45, but when the solar power generation panel 2 is suspended using the wire 7, the sliding member 45 and the fixing bolt 34 may be omitted.

[0021] The mounting object 4 includes a rail member 41, a first clamping member 42, a second clamping member 43, an angle member 44, and a sliding member 45. The rail member 41 is a horizontal member that spans the roof or frame of a building. A guide groove 411 is provided on the upper surface of the rail member 41 along its longitudinal direction. A pair of locking pieces 413 (413A, 413B) are provided projecting inward from each of the side walls 412 of the guide groove 411. Locking piece 413A is provided at the upper end of the side wall 412. On the other hand, locking piece 413B is provided at a position slightly lower from the upper end of the side wall 412 and is positioned relatively lower than 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 surface of the rail member 41, protruding laterally from the rail member 41 and extending with their tips bent in at least one direction (up or down). Multiple 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 clamp-shaped clamping members that clamp the seam portion 51 of the corrugated metal roof 5. The first clamping member 42 has a support portion 421 that supports the rail member 41, a first contact 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 contact portion 422 and has a bolt hole through which a bolt for connecting to the second clamping member is inserted, and a recessed portion 424 that is curved and recessed for rotatably connecting the end of the second clamping member. The second clamping member 43 has a curved outer shape and includes a convex portion 431 that is rotatably connected to the concave portion 424, a second contact portion 432 that abuts against the other side surface of the seam portion 51, and a second connecting portion 433 that connects the convex portion 431 and the second contact 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 can be connected using a bolt 46 while, for example, the seam portion 51 is clamped between the first contact portion 422 and the second contact portion 432, and can be fixed to a corrugated metal roof 5 or the like.

[0023] Furthermore, the angle member 44 is an L-shaped plate-like member that connects the rail member 41 and the first clamping member 42. The 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 for connecting to the support portion 421 is inserted. The second surface 442 of the angle member 44 has an engagement groove 443 that protrudes laterally from the second surface and whose tip is bent downwards and extends therein. The engagement groove 443 engages with the fixing groove 414 of the rail member 41, fixing the rail member 41 on the support portion 421 of the first clamping member 42.

[0024] The slide member 45 is a nut-shaped member having a female threaded portion 451 and connected to the tip of the male threaded portion of the fixing bolt 34. The slide member 45 is configured to slide freely within the guide groove 411 of the rail member 41, thereby allowing the slide member 45 to be positioned at any position along the longitudinal direction of the rail member 41. Furthermore, the locking pieces 413 provided on both sides of the guide groove 411 are arranged at different heights, so by tilting the slide member 45, the slide member 45 can be slid into the guide groove 411 from above the rail member 41 at any position along the longitudinal direction of the rail member 41. The slide member 45 also has engagement portions 452 (452A, 452B) that protrude at different heights on its side surface. The difference in the vertical position of the two engaging portions 452 corresponds to the difference in the vertical position of the two locking pieces 413 that are provided at different heights on both sides of the guide groove 411, and the mounting fixture 3 and the rail member 41 are fastened by screwing the fixing bolt 34 and the slide member 45 together. It is possible.

[0025] <Other> The configuration of the embodiments described above is illustrative and can be combined or modified as much as possible without departing from the problems or technical ideas of the present invention. For example, the mounting bracket 3 may be attached to the short side of the solar power generation panel 2. Also, the through hole 323 of the second holding part 32 only needs to extend parallel or substantially parallel to the solar power generation panel 2 when installed. Also, the solar panel system 1 may be supported by a rod-shaped pole instead of the wire 7. Furthermore, the object to be mounted 4 is not limited to one installed on the roof of a building, and the rail member 41 may, for example, constitute part of a mounting frame. Also, the mounting bracket 3 may have a stepped portion for clamping the solar power generation panel 2 on the second holding part 32 instead of the first holding part 31, or it may have stepped portions on both the first holding part 31 and the second holding part 32. The protruding pin 315 may also be provided on the second holding part 32 instead of the first holding part 31, or it may be provided on both the first holding part 31 and the second holding part 32.

[0026] <Effects> With the mounting device 3, the solar power generation panels 2 can be installed on general mounting frames or building roofs, and in locations where it is difficult to install mounting objects for bolt fastening, the solar power generation panels 2 can also be suspended in the air using the wire 7. By supporting the flexible solar power generation panels 2 with the wire 7, it becomes easy to install solar power generation equipment on curved roofs or on lifting devices for hanging banners installed on the walls of buildings, etc. Furthermore, in the installed state, in a plan view when the solar power generation panel 2 is viewed from above, the through-hole 323 is positioned to overlap with the solar power generation panel 2. Therefore, the wire 7 is located on the back side of the solar power generation panel 2, and since it does not cast a shadow on the solar power generation panel 2, the power generation efficiency can be improved, and the design of the solar panel system 1 can be improved. The solar power generation panel 2 may also adopt a metal-wrap-through (MWT) type back-contact structure. With such a structure, the power generation efficiency can be improved as the busbar does not cast a shadow on the solar power generation panel 2, and the design of the solar panel system 1 can be improved. [Explanation of symbols]

[0027] 1: Solar panel system 2: Solar power panels 21: Solar cell 22: Edge 3: Mounting hardware 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: Tightening bolts 34: Fixing bolts 4: Object to be installed 41: Rail component 42: First clamping member 43: Second clamping member 44: Angle member 45: Sliding member 46, 47: Bolt 5: Corrugated metal roof 51: Goby section 6: Junction Box 7: Wire (pole)

Claims

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

2. The holding portion clamps the solar power generation panel by tightening the fastening bolts and has a protruding pin that pierces the edge of the front or back surface of the solar power generation panel when tightened. The solar panel system according to claim 1.

3. The holding portion includes a first holding portion that holds the front surface side of the solar power generation panel and a second holding portion that holds the back surface side of the solar power generation panel. The protruding pin is provided at a position where the first holding portion is in contact with the surface of the solar power generation panel or at a position where the second holding portion is in contact with the back surface of the solar power generation panel. The aforementioned fastening bolt fastens the first retaining portion and the second retaining portion. The solar panel system according to claim 2.

4. In a plan view taken from a direction perpendicular to the solar power generation panel, the through-hole is provided in a position that overlaps with the solar power generation panel. A solar panel system according to any one of claims 1 to 3.

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