JP2013076305A - Photovoltaic power generation device and installation method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation device in which it is not necessary to connect frames to each other or panel bodies to each other by earth cables.SOLUTION: Panel bodies 10 holding photovoltaic power generation panels 1 and frames 2 supporting the panel bodies 10 are provided in a photovoltaic power generation device. A plurality of panel bodies 10 are arranged at least in the inclined direction of a roof surface 3; the panel body has a vertical frame 13 for holding the vertical side of the photovoltaic power generation panel 1; the frame 2 has a vertical rail member 20 for supporting and fixing the vertical frame 13 of the panel body 10; the vertical rail member 20 has a panel fixing part 44 for supporting and fixing the vertical frame 13 of the panel body 10; the panel fixing part 44 and the vertical frame 13 are fixed by conductive fasteners; the vertical rail member 20 is arranged across the panel bodies 10 adjacent to each other in the inclined direction of the roof surface 3; and the vertical rail member 20 is fastened to both of the vertical frames 13 of the adjacent panel bodies 10 by fasteners.

Description

  The present invention relates to a photovoltaic power generation apparatus that supports a photovoltaic power generation panel that is installed on the roof of a building, and a method for installing the photovoltaic power generation apparatus, and in particular, supports a plurality of photovoltaic power generation panels and supports each photovoltaic power generation panel by a gantry. The present invention relates to an electrically connected solar power generation device and an installation method thereof.

  In order to install a solar power generation panel on the roof surface of a building, it is necessary to provide a support structure for supporting and fixing the solar power generation panel to constitute a solar power generation device. Of the solar power generation devices, in a roof-integrated structure, first, a ground plate made of wood is waterproofed, and then a steel plate is laid on the surface. A stand for supporting the photovoltaic power generation panel is installed so as to be buried under the steel plate or under the steel plate. The photovoltaic power generation panel forms a panel body surrounded by a frame body that holds the solar power panel over four circumferences, and the peripheral edge portion of the frame body is placed on a frame and fixed.

  The photovoltaic power generation panel needs to be electrically grounded, and in the photovoltaic power generation apparatus, the frame body that holds the photovoltaic power generation panel and the mount are electrically connected. As a structure for that purpose, the screws are connected to each other by a screw for connecting the frame and the gantry, and the gantry is electrically connected to each other by a ground wire. As a solar power generation device having such a configuration, for example, there is one as described in Patent Document 1.

JP 2001-262800 A

  The gantry is formed of an aluminum mold, but since an oxide film is formed on the surface of aluminum, sufficient electrical conductivity cannot be obtained simply by bringing the gantry into contact with each other. For this reason, in the conventional solar power generation device, it is essential to connect the members constituting the gantry or the panel bodies with a ground wire, which makes the construction troublesome.

  This invention is made | formed in view of the said subject, and it aims at providing the solar power generation device which does not need to connect the members which comprise a mount frame, and panel bodies with a ground wire, and its installation method.

In order to solve the above problems, a photovoltaic power generation apparatus according to the present invention is a photovoltaic power generation apparatus in which a photovoltaic power generation panel is fixed to a roof surface of a building.
A panel body configured to hold the solar power generation panel, and a gantry that supports the panel body are provided,
A plurality of the panel bodies are arranged along at least the inclination direction of the roof surface, and the panel body has a vertical frame having conductivity and holding a vertical side along the inclination direction of the roof surface of the photovoltaic power generation panel. The frame includes a vertical rail member that supports and fixes the vertical frame of the panel body and has conductivity,
The vertical rail member has a panel fixing portion that supports and fixes the vertical frame of the panel body, and the panel fixing portion and the vertical frame are fixed by a conductive fastener,
The vertical rail member is disposed so as to straddle adjacent panel bodies along the inclination direction of the roof surface, and the vertical rail member is fixed to the vertical frames of both of the adjacent panel bodies by the fasteners. It is configured as a feature.

  Moreover, the solar power generation device according to the present invention is characterized in that a hole having a diameter smaller than the diameter of the fastener is formed in the panel fixing portion and the vertical frame of the vertical rail member.

  Furthermore, the solar power generation device according to the present invention corresponds to each of the vertical rail members so that the vertical frames of adjacent panel bodies can be supported and fixed along the direction orthogonal to the inclination direction of the roof surface. The panel fixing portion is integrally formed.

Furthermore, the installation method of the photovoltaic power generation apparatus according to the present invention is the installation method of the photovoltaic power generation apparatus that fixes the photovoltaic power generation panel to the roof surface of the building.
A panel body having a vertical frame having conductivity that holds the solar power generation panel, and holds a vertical side along the inclination direction of the roof surface of the solar power generation panel, and supports the panel body, A gantry having a conductive vertical rail member provided with a panel fixing portion for supporting and fixing the vertical frame of the panel body is fixed to the roof surface,
A plurality of the panel bodies are arranged along at least the inclination direction of the roof surface, and the vertical rail members are arranged and fixed so as to straddle adjacent panel bodies along the inclination direction of the roof surface. The vertical rail member is fixed to both of the vertical frames by a conductive fastener.

  According to the photovoltaic power generation apparatus according to the present invention, the vertical rail members constituting the gantry are arranged so as to straddle adjacent panel bodies along the inclination direction of the roof surface, with respect to both vertical frames of the adjacent panel bodies. By fixing the vertical rail member with the fastener, the adjacent panel bodies can be set to the same potential along the inclination direction of the roof surface via the vertical rail member, and the gantry and the panel bodies can be connected to each other with a ground wire. Since it is possible to eliminate the need for connection, workability can be improved.

  Moreover, according to the solar power generation device according to the present invention, the vertical rail member and the vertical frame are formed by forming a hole having a diameter smaller than the diameter of the fastener in the panel fixing portion and the vertical frame of the vertical rail member. Even when formed of aluminum, reliable conduction with the fastener can be achieved.

  Furthermore, according to the photovoltaic power generation apparatus according to the present invention, the vertical rail members correspond to the vertical frames of the adjacent panel bodies along the direction orthogonal to the inclination direction of the roof surface, respectively. By having the panel fixing part integrally, it is possible to make the panel body adjacent along the direction perpendicular to the inclination direction of the roof surface by the vertical rail member, and the same potential in the entire apparatus. As a result, no ground wire can be required.

It is a top view of the solar power generation device in this embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. FIG. 3 is an enlarged view of the vicinity of a vertical rail member in FIG. 2. FIG. 5 is an exploded view of FIG. 4. It is the top view which exaggerated and represented the relationship between a panel body and a vertical rail member.

  Embodiments of the present invention will be described in detail with reference to the drawings. The solar power generation device of this embodiment is attached to the roof of a building formed in an inclined surface shape. That is, the solar power generation device is provided along the slope of the roof surface. Moreover, the solar power generation device of this embodiment is formed integrally with the roof when the building is constructed, and has a roof-integrated support structure that also serves as the roof of the building.

  In FIG. 1, the top view of the solar power generation device in this embodiment is shown. In this embodiment, two photovoltaic power generation panels 1 are juxtaposed along the horizontal direction orthogonal to the inclination direction of the roof surface, two along the inclination direction of the roof surface, and a total of six solar panels. The photovoltaic panel 1 is supported and fixed. The photovoltaic power generation panel 1 constitutes a panel body 10 having a peripheral portion held by a frame body 11 framed in a square shape, and the panel body 10 is supported by a gantry 2 installed on a roof surface. .

  The frame 11 is orthogonal to the vertical frame 13 that holds the vertical sides along the inclination direction of the roof surface among the edges of the photovoltaic power generation panel 1 and the inclination direction of the roof surface among the edges of the solar power generation panel 1. It consists of a horizontal frame 12 that holds the horizontal sides along the left-right direction. The horizontal frame 12 includes an upper frame 50 that constitutes the upper side of the panel body 10 and a lower frame 55 that constitutes the lower side of the panel body 10. The vertical frame 13 is supported and fixed by a vertical rail member 20 that constitutes the gantry 2, and the horizontal frame 12 is supported by an intermediate bracket 21 that constitutes the gantry 2.

  The vertical rail members 20 constituting the gantry 2 are formed in a long shape so as to be able to support and fix the vertical sides of the panel bodies 10 adjacent in the left-right direction, and are arranged at regular intervals in the left-right direction. In the present embodiment, since three panel bodies 10 are arranged in the left-right direction, as shown in FIG. 1, the vertical rail members 20 arranged at both ends in the left-right direction to support and fix the panel body 10 only on one side, Longitudinal rail members 20 that are arranged at intermediate positions in the direction and support and fix the panel body 10 on both sides are provided.

  The horizontal side of the panel body 10 is supported by an intermediate bracket 21 formed in a short shape. The detailed configuration will be described later. Moreover, the eaves side end member 22 is provided in the lower end part of a solar power generation device along the left-right direction, and the ridge side end member 23 is provided in the upper end part of a solar power generation device along the left-right direction, respectively.

  It demonstrates in detail about a solar power generation device. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. In FIG. 2, the left half of the AA cross section is omitted and a part of the middle is omitted. In FIG. 3, the middle part of the BB cross section is omitted. As shown in FIG. 2, the roof surface 3 of the building is configured such that a field board 30 is supported by rafters 32 arranged at regular intervals in the left-right direction. The base plate 30 is made of wood, and a waterproof sheet 31 is stretched on the surface thereof.

  A steel plate 4 is laid on the surface of the roof surface 3, and the gantry 2 is installed on the steel plate 4 to support and fix the panel body 10. The gantry 2 has the vertical rail member 20 that supports and fixes the vertical side of the panel body 10 as described above. The vertical rail member 20 is arranged immediately above the rafter 32 in accordance with the interval between the rafters 32 and is fixed to the roof surface 3 and the rafter 32 with screws. Thereby, the fixed intensity | strength of the mount frame 2 can be enlarged.

  The gantry 2 includes a vertical rail member 20 and an intermediate bracket 21 provided between the vertical rail members 20. The vertical rail member 20 supports the vertical frame 13 of the panel body 10 along the longitudinal direction, and the intermediate bracket 21 supports the horizontal frame 12 of the panel body 10 at regular intervals. Since the length in the left-right direction of the intermediate bracket 21 is smaller than the distance between the vertical rail members 20, a space region that penetrates along the inclination direction of the roof surface is formed in the gantry 2 below the panel body 10. Air can escape through the space area.

  As shown in FIG. 3, the intermediate bracket 21 supports the horizontal frames 12 and 12 constituting the two panel bodies 10 adjacent to each other along the inclination direction of the roof surface, and the ridge side end and the eaves side end. Then, one horizontal frame 12 is supported, and the movement of the panel body 10 in the thickness direction is restricted at the middle portion of each panel body 10 in the left-right direction. Thereby, the bending of the panel body 10 by a wind pressure etc. can be prevented.

  Next, the fixing structure of the vertical rail member 20 will be described in detail. 4 shows an enlarged view of the vicinity of the vertical rail member 20 in FIG. 2, and FIG. 5 shows an exploded view of FIG. The vertical rail member 20 is placed on the steel plate 4 laid on the roof surface 3 and fixed to the roof surface 3 via the steel plate 4, the inner rail portion 41 rising from the bottom surface portion 40, and the outer side A rail portion 42 and an attachment fixing portion 43 formed further inside the inner rail portion 41 are provided.

  As described above, the bottom surface portion 40 is formed so as to be wider than the butt portion 5 of the steel plate 4 so that the butt portion 5 is not directly exposed to the outside. Further, the vertical rail member 20 is fixed to the roof surface 3 by screws 48 at the center position of the bottom surface portion 40.

  The inner rail portion 41 and the outer rail portion 42 are each composed of a set of rising pieces sandwiching the attachment fixing portion 43. The inner rail portion 41 rises in the vertical direction from the bottom surface portion 40, and has a planar panel fixing portion 44 that extends toward the center side of the vertical rail member 20 at its upper end portion. 41 and the panel fixing portion 44 are formed to have a substantially L-shaped cross section.

  Since the vertical rail member 20 includes the outer rail portion 42 and the inner rail portion 41, the outer large concave portion including the inner rail portion 41, the outer rail portion 42, and the bottom portion 40 and the inner rail 41. And an inner small concave portion made up of the attachment fixing portion 43 and the bottom surface portion 40, respectively. Therefore, even if water enters from between the photovoltaic power generation panels 1, these recesses serve as water passages, and water flows under the roof, so that the water can be prevented from entering a fixed position by the screws 48. Furthermore, since the center side edge part of the vertical rail member 20 exists in the outer position rather than the attachment fixing part 43, even if water permeates into the upper surface side of the panel fixing part 44, the panel fixing | fixed part 44 does not enter water. Since it falls in the area | region between the inner rail parts 41 outside the attachment fixing | fixed part 43, it can prevent that water permeates into the inner side of the attachment fixing | fixed part 43, ie, the fixing position side of the screw | thread 48. FIG.

  Moreover, the part which fixes the screw | thread 48 of the bottom face part 40 is formed with the convex part 40a made thick, and the screw 48 enclosed by the attachment fixing | fixed part 43 by forming the convex part 40a. Even if water permeates into the fixed position, the attachment fixing portion 43 and the convex portion 40a form a water passage by a concave portion, and water flows through the passage below the roof, so that the screw surface inserted through the roof surface 3 It is possible to prevent water from entering the glass, and the waterproofness can be further enhanced.

  The vertical frame 13 of the panel body 10 is placed on the panel fixing portion 44 of the vertical rail member 20, and is fixed by screws that are fasteners. The vertical frame 13 includes a peripheral surface portion 13 a that faces the peripheral surface of the photovoltaic power generation panel 1, a planar fixed surface portion 13 b that protrudes from the peripheral surface portion 13 a to the outer peripheral side of the panel body 10, and the peripheral surface portion 13 a to the panel body 10. A panel holding portion 13c that protrudes toward the inner peripheral side and holds the peripheral edge portion of the photovoltaic power generation panel 1 is provided. Among these, the fixed surface portion 13b of the vertical frame 13 is placed and fixed to the panel fixing portion 44 of the vertical rail member 20.

  Since the vertical rail member 20 is formed with panel fixing portions 44 on both sides of the center attachment fixing portion 43, the vertical frames 13 of the adjacent left and right panel bodies 10 can be supported and fixed, respectively. Since the left and right panel fixing portions 44 are spaced apart from each other at the front end portions, the upper portion of the attachment fixing portion 43 and the screw 48 is open in the vertical rail member 20. Accordingly, the adjacent vertical frames 13 are also supported and fixed in a separated state. For this reason, the vertical frame 13 can be slid in the left-right direction when the panel body 10 is attached or removed.

  Further, since the left and right panel fixing portions 44 are separated from each other and the attachment fixing portion 43 and the screw 48 are opened upward, the vertical rail member 20 can be easily fixed to the roof surface 3. It can also be easily removed. Furthermore, when the vertical frame 13 is fixed to the vertical rail member 20, the fixing surface portion 13b of the vertical frame 13 may be placed and fixed on the panel fixing portion 44 of the vertical rail member 20, so that alignment is easy. Can be. Furthermore, the protrusion 44a is formed in the end surface of the panel fixing | fixed part 44 over the longitudinal direction, and when the panel body 10 is mounted, the drop-off can be prevented.

  The attachment fixing portion 43 of the vertical rail member 20 includes a set of protruding portions having a substantially L-shaped cross section with a fixing position by the screw 48 interposed therebetween. A cover attachment 46 is engaged and fixed to the attachment fixing portion 43, and a vertical rail cover 45 is fixed to the cover attachment 46.

  The cover attachment 46 includes an engagement portion 46 a that can be engaged with the attachment fixing portion 43 at the lower end portion. The cover attachment 46 has a height from the attachment fixing portion 43 to a position in the vicinity of the upper surface of the panel body 10, and a cover fixing portion 46 b that can fix the vertical rail cover 45 is provided at the upper end portion.

  The vertical rail cover 45 includes a cover side fixing portion 45a fixed to the cover fixing portion 46b with screws and a cover portion 45b extending left and right from the cover side fixing portion 45a. The cover portion 45b covers a space portion formed between the peripheral surface portions 13a of the vertical frames 13 adjacent in the left-right direction and extends to a position on the peripheral edge portion of the panel holding portion 13c of the vertical frame 13 constituting the panel body 10. In this way, water can be prevented from entering the vertical rail member 20.

  Next, the grounding configuration of the photovoltaic power generation panel 1 will be described. In FIG. 6, the top view which exaggerated and represented the relationship between the panel body 10 and the vertical rail member 20 is shown. In this figure, the panel body 10 is simplified and the width of the vertical rail member 20 is greatly exaggerated. Each photovoltaic power generation panel 1 needs to be electrically grounded. In this embodiment, the photovoltaic power generation panel 1 is configured to be grounded via a vertical rail member 20 that fixes the vertical frame 13 of the panel body 10.

  As shown in FIG. 6, the vertical rail member 20 is divided into two in the longitudinal direction, and the vertical rail member 20 arranged on the ridge side extends from the upper end position of the panel body 10 on the ridge side to the intermediate position. The vertical rail member 20 arranged on the eaves side extends from an intermediate position of the ridge side panel body 10 to a lower end position of the eaves side panel body 10. That is, the eaves-side vertical rail members 20 are all arranged so as to straddle the adjacent panel bodies 10 along the inclination direction of the roof surface 3. In FIG. 6, in order to clarify the length of the vertical rail member 20, the vertical rail member 20 is illustrated as having a gap between adjacent vertical rail members 20 along the inclination direction of the roof surface 3. It arrange | positions so that both may contact | abut and a clearance gap may not arise.

  As described above, each vertical rail member 20 has the panel fixing portions 44 on both sides, and the vertical frame 13 of the panel body 10 is fixed with screws as fasteners. A plurality of fastening holes 49 are formed along the longitudinal direction. The fastening hole 49 is formed to have a diameter slightly smaller than the screw diameter of the screw for fixing the vertical frame 13. Specifically, the screw diameter of the screw is 5 mm, whereas the fastening hole 49 is formed to be about 4.5 mm.

  Since the vertical rail member 20 and the vertical frame 13 are made of aluminum, conductivity is low only by contact with the surface due to an oxide film formed on the surface. Therefore, when the fastening hole 49 is smaller than the screw diameter of the screw, when fixing the vertical rail member 20 and the vertical frame 13, the screw is screwed into the fastening hole 49, and the vertical rail 20, the vertical frame 13 and the screw are screwed. The contact surface can be damaged, ensuring continuity.

  By fixing the vertical rail member 20 and the vertical frame 13 with fasteners, the vertical rail member 20 and the panel body 10 have the same potential. Since the two longitudinal rail members 20 in the longitudinal direction are both fixed to the panel body 10 on the ridge side via the fastening holes 49, they have the same potential. And since the eaves-side vertical rail member 20 is also fixed to the ridge-side panel body 10 via the fastening holes 49, the ridge-side and eaves-side adjacent panel bodies 10, 10 are also It becomes the same potential.

  As described above, the eaves-side vertical rail member 20 is disposed across the two panel bodies 10 adjacent to each other along the inclination direction of the roof surface 3. It is possible to conduct through 20 with a screw stopper. Moreover, since the panel fixing | fixed part 44 and 44 which can respectively fix the panel body 10 which adjoins the vertical rail member 20 which consists of aluminum each in the left-right direction is integrally formed, in the left-right direction orthogonal to the inclination direction of the roof surface 3 The adjacent two panel bodies 10 and 10 can also be conducted through screws with the vertical rail member 20.

  Furthermore, since the photovoltaic power generation panel 1 is configured so that the entire circumference has the same potential along the peripheral edge portion, the vertical rails are arranged separately along the left-right direction orthogonal to the inclination direction of the roof surface 3. The member 20 and the panel body 10 fixed thereto are all at the same potential. As a result, all the vertical rail members 20 and the panel body 10 shown in FIG. 6 have the same potential. Therefore, the entire photovoltaic power generation apparatus can be grounded by connecting any one place to the ground line. it can. Thereby, it is not necessary to connect the gantry 2 or the panel bodies 10 with an earth wire, and construction can be facilitated.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of its technical idea. For example, the number of the photovoltaic power generation panels 1 is not limited to that of the present embodiment, but at least between the panel bodies 10 adjacent to each other in the inclination direction of the roof surface 3 is provided with a vertical rail member 20 that spans them. It will be.

DESCRIPTION OF SYMBOLS 1 Photovoltaic power generation panel 2 Mounting frame 3 Roof surface 4 Steel plate 10 Panel body 11 Frame body 12 Horizontal frame 13 Vertical frame 20 Vertical rail member 21 Intermediate bracket 40 Bottom surface part 41 Inner rail part 42 Outer rail part 43 Attachment fixing part 44 Panel fixing part 45 Vertical rail cover 46 Cover attachment 49 Fastening hole

Claims (4)

In a solar power generation device in which a solar power generation panel is fixed to the roof surface of a building,
A panel body configured to hold the solar power generation panel, and a gantry that supports the panel body are provided,
A plurality of the panel bodies are arranged along at least the inclination direction of the roof surface, and the panel body has a vertical frame having conductivity and holding a vertical side along the inclination direction of the roof surface of the photovoltaic power generation panel. The frame includes a vertical rail member that supports and fixes the vertical frame of the panel body and has conductivity,
The vertical rail member has a panel fixing portion that supports and fixes the vertical frame of the panel body, and the panel fixing portion and the vertical frame are fixed by a conductive fastener,
The vertical rail member is disposed so as to straddle adjacent panel bodies along the inclination direction of the roof surface, and the vertical rail member is fixed to the vertical frames of both of the adjacent panel bodies by the fasteners. A solar power generation device characterized by.   The solar power generation device according to claim 1, wherein a hole having a diameter smaller than a diameter of the fastener is formed in the panel fixing portion and the vertical frame of the vertical rail member.   The vertical rail member integrally includes the panel fixing portions corresponding to each of the vertical rail members so as to support and fix the vertical frames of adjacent panel bodies along a direction orthogonal to the inclination direction of the roof surface. The solar power generation device according to claim 1 or 2, wherein In the installation method of the solar power generation device that fixes the solar power generation panel to the roof surface of the building,
A panel body having a vertical frame having conductivity that holds the solar power generation panel, and holds a vertical side along the inclination direction of the roof surface of the solar power generation panel, and supports the panel body, A gantry having a conductive vertical rail member provided with a panel fixing portion for supporting and fixing the vertical frame of the panel body is fixed to the roof surface,
A plurality of the panel bodies are arranged along at least the inclination direction of the roof surface, and the vertical rail members are arranged and fixed so as to straddle adjacent panel bodies along the inclination direction of the roof surface. The installation method of the solar power generation device, wherein the vertical rail member is fixed to both the vertical frames by a fastener having conductivity.

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