JP2006278738A - Photovoltaic power generating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photovoltaic power generating system and a photovoltaic power generating system capable of performing maintenance/inspection operation of the rear surface of a solar battery module or attaching/detaching operation of the solar battery module easily and rapidly while saving time and effort. <P>SOLUTION: The photovoltaic power generating system consists of a solar battery module, two columnar rails, and fixing members to be each fixed on each of the two columnar rails. The fixing members are fixed on two opposing sides of the solar battery module, rotatably fixed on one of the two columnar rails, and fixed attachably/detachably on the other columnar rail. Also, a plurality of solar battery modules are attached on the columnar rails. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solar power generation device such as a solar cell module that generates power using solar energy, and in particular, solar light that is formed by arranging a plurality of solar power generation devices that are installed and fixed on a roof or the like using a mount. The present invention relates to a power generation device.

  In recent years, with the growing interest in global environmental problems, technological development of new energy systems using natural energy is progressing. Among them, the power generation system using solar light has the highest interest and is now spreading rapidly.

  In addition, there are various ways to attach it to the roof. A roof-integrated solar cell module manufactured integrally with the roof member, and a frame using a vertical beam or a horizontal beam on the roof tiles. The solar cell module is installed there, the so-called roofing type installation method, and the sun through a pedestal called a pedestal made of steel or aluminum on a horizontal installation surface such as the ground or the roof of a building There is a flat roof type installation method for fixing the battery module.

  When the installation method of the flat roof type is further described, if the photovoltaic power generation device is installed horizontally on a residential roof (called a flat roof) whose roof is almost flat, the incident angle of sunlight on the solar cell module becomes shallow. As a result, the power generation amount is usually reduced by about 30 to 40%. In view of this, a solar power generation apparatus having a structure in which the solar cell module is tilted and supported by using a mount for tilting the solar cell module as shown in FIG.

  Specifically, first, anchors are buried by drilling holes in a concrete roof that is a horizontal installation surface, and the foundation 11 fixed to the anchors is formed of a heavy object such as concrete. Thereby, the foundation 11 is fixed to an installation place by an anchor bolt or the like driven into the roof, and further, the solar cell module or the like is supported by a negative pressure load due to wind or the like by the weight of the foundation 11. In addition, when the foundation 11 has sufficient weight with respect to the solar power generation device J, and the influence by a wind load etc. does not become a problem, only a foundation is distribute | arranged and the anchor construction mentioned above does not need to be performed.

  Next, the base rail 14 which is a long metal member is installed between the plurality of foundations 11, and the support fitting 13 (13 a to 13 c) supporting the solar cell module 20 is fixed on the base rail 14. Thus, the solar cell module 20 is supported and fixed.

  The support brackets 13a to 13c have different lengths, for example, the support bracket 13a is configured to be the shortest and the support bracket 13c is configured to be the longest, so that the installation angle of the solar cell module 20 is inclined, Improve power generation efficiency during solar power generation.

  In addition, although this example demonstrated a mode that a solar power generation device was installed on a roof using a flat roof installation stand, it is the same also with the roof-standing type installed on an inclined roof, and the foundation 11 is roof fixing bracket. Replace with

  As shown in FIG. 17, the solar cell module 20 used in the photovoltaic power generation apparatus is configured to obtain electric power by using the photoelectric conversion effect of the solar cell element 23 made of silicon or the like. A plurality of solar cell elements 23 are electrically connected in series and in parallel and covered with a weather-resistant material so as to obtain a required output voltage and output current.

  This solar cell element 23 is constituted by a crystalline solar cell such as single crystal or polycrystalline silicon, a thin film solar cell, or the like.

  In the solar cell module 20, a light transmitting plate 24 such as a glass plate or a synthetic resin plate is disposed on the light receiving surface of the solar cell element 23, and a Teflon (registered trademark) film or PVF is disposed on the non-light receiving surface which is the back surface thereof. (Polyvinyl fluoride), PET (polyethylene terephthalate) or other weather resistant film 26 is attached, and between the light transmission plate 24 and the weather resistant film 26, for example, EVA (ethylene-vinyl acetate copolymer resin) or the like. A transparent synthetic resin is interposed between the light transmitting plate 24, the solar cell element 23, and the weather resistant film 26, and a rectangular main body having a laminated structure. The frame body 21 made of SUS or the like is attached so as to sandwich it, thereby increasing the strength of the entire solar cell unit and opening a mounting hole in the frame body 21. It is to be fixed by bolts or screws to the lifting fittings 13. The generated power of the solar cell module 20 can be taken out via a junction box 22 provided on the weather resistant film surface.

  This method of fixing the solar cell module via the gantry can make the rigidity extremely high, has resistance against large external forces such as storms and snow, and is suitable for constructing a large-scale photovoltaic power generation apparatus. .

  By the way, in such a solar power generation apparatus, in most cases, the solar cell module is inclined and installed on the pedestal in order to increase the power generation efficiency. In many cases, the solar cell module 20 is used as shown in FIG. Since the mounting bracket 13 of the gantry is firmly fixed and restrained by using the fastening members 12 such as bolts and nuts, it is easy to adjust the inclination angle of the solar cell module after installation, and to perform maintenance and inspection work. There is no problem.

  Thus, a structure has been proposed in which a rotating mechanism is provided at the periphery of the solar cell module to improve workability during maintenance and inspection (see Patent Document 1).

In addition, a structure has been proposed in which a rotating shaft is provided on the platform of the solar cell module, and the solar cell module inclination angle can be adjusted according to the solar radiation angle (see Patent Document 2).
JP-A-8-130322 JP 2003-258290 A

  However, as described above, in order to solve the problem that adjustment of the inclination angle of the solar cell module after installation and maintenance / inspection work cannot be easily performed, a rotating mechanism is provided at one place on the periphery of the solar cell module. Assuming that the workability at the time of maintenance / inspection is improved, a solar cell module mount having a rotation mechanism has a structure in which only one rotation axis exists at the center or peripheral portion of the solar cell module. Since the gantry with a single axis mechanism in the center is a method of restraining the moment around the axis of the solar cell module with frictional force, it is necessary to fix the external force applied to the outer periphery by the lever principle. There is a problem that a strong fixing structure is required. In addition, when the inclination angle of the solar cell module is large, it is easier to receive strong external forces such as storms. Therefore, a means for fixing the inclination angle of the solar cell module in a horizontal position is required to minimize the external force due to wind pressure. there were. That is, it is inferior in performance as compared to firmly fixing and restraining the solar cell module and the support bracket of the mount using fastening members such as bolts and nuts.

  On the other hand, in a pedestal having one rotating shaft mechanism at the peripheral edge as described in Patent Document 2, the rotation of the solar cell module is limited to the circumferential direction of the rotating shaft. There arises a problem that the work procedure is limited. Furthermore, it is necessary to use two types of structures, that is, a rotation mechanism and a mechanism for fixing the non-rotating side of the solar cell module, resulting in an increase in the variety of parts and a complicated construction work. It was.

  An object of the present invention is to provide a photovoltaic power generation apparatus that has a simple structure, reduces the number of assembly steps during installation work, reduces manufacturing costs and parts types, and thereby achieves cost reduction. .

  In order to achieve the above object, the photovoltaic power generation apparatus of the present invention is a fixing method in which a solar cell module is detachably installed on a gantry, and includes a solar cell module, two columnar rails, and the two A photovoltaic power generation system comprising a fixing member attached to each of the columnar rails, wherein the fixing member is fixed to two opposite sides of the solar cell module, and one of the two columnar rails is And is fixed to the other columnar rail so as to be detachable.

  According to the solar power generation device of the present invention, by adopting the above-described configuration, the solar cell module can rotate the outer periphery of the columnar rail around one of the two columnar rails as an axis, A solar power generation device that is easy to install, replace, and maintain and has a low risk of falling off.

  In addition, by using a solar power generation apparatus in which a plurality of solar cell modules are attached to the columnar rails, the maintainability is improved and the power cable is not visible. Maintenance / inspection of the back side of the solar cell module, or installation / removal work of the solar cell module can be performed easily, quickly and with labor saving.

  In addition, when the solar cell module is lifted with only one fixing member removed from the columnar rail, the solar cell module can be rotated with the other columnar rail as the central axis of rotation, whereby the solar cell module Maintenance / inspection or removal work on the back side of can be performed very easily.

  In addition, since either of the two columnar rails can be used as the central axis of rotation, the work can be performed in the rotation direction intended by the operator.

  In addition, a good maintainability is not lost as a photovoltaic power generation system in which a large number of solar cell modules are densely installed, and the power generation area can be minimized.

  Hereinafter, an embodiment of a solar power generation device of the present invention will be described in detail based on the drawings schematically shown.

  As shown in FIG. 1, the photovoltaic power generation apparatus S according to the present invention includes a solar cell module 5, two parallel rails 3 (3 a, 3 b), and a fixing member 4, The fixing member 4 attached to the lower part of the solar cell module 5 is fixed so as to be wound around the columnar rail 3.

  The fixing member 4 and the columnar rail 3 may be, for example, a metal such as aluminum metal, SUS, copper metal, or brass, or a resin such as polycarbonate, FRP, or carbon. In particular, the columnar rail 3 may bend even if its length is increased. The smaller the amount, the better. In this example, a columnar aluminum rail is used as the columnar rail 3, but a prismatic rail as described later can also be used. Further, in the figure, the columnar rail 3 is attached to a foundation rail 1 installed on the ground or a roof with a fixed band 2 or the like, but may be attached to a foundation block made of concrete or the like instead of the foundation rail 1. Well, it is possible to change the attachment target according to the purpose.

  The solar cell module 5 can be a general-purpose type that is generally used, and the fixing member 4 is attached to the outer frame member with screws or an adhesive. Moreover, although the fixing member 4 is arranged on the back surface of the solar cell module 5 in the drawing, it may be arranged on the side surface.

  FIG. 2 shows the configuration of the fixing member. The fixing member 4 is attached to and supported by the solar cell module 5, the columnar rail 9 into which the columnar rail is inserted and the solar cell module 5 is positioned, and the columnar rail does not come out of the shaft groove 9. And a locking member 10 that covers the opening of the shaft groove 9. In the figure, the lock member 10 has a structure that can be rotated in the horizontal direction with a screw at the lower part of the support member 8. However, if an opening / closing mechanism as shown in FIG. 7 described later is used, construction work can be made easier. .

  Specifically, an embodiment in which a solar power generation device according to the present invention is arranged on a gantry in which base rails are passed between foundation blocks placed on a flat roof will be described in detail based on the schematic diagram.

  As shown in FIG. 3, the foundation block 6 is arranged on the flat roof of the house or fixed to the roof surface with anchor bolts or the like. The foundation rail 1 (1a, 1b) is fixed with a bolt etc. on it, and the two columnar rails 3 (3a, 3b) which are cylindrical aluminum round pipes are attached to the foundation rail 1 (1a, 1b). The fixing band 2 (2a, 2b) for arranging the columnar rails is arranged in parallel. At this time, as shown in the figure, the solar cell module 5 can have an inclination angle by biting the spacer 15 on the fixed band 2b side and creating a height difference with the fixed band 2a side. The distance between the bands 2a-2b is calculated according to the inclination angle. Then, the two columnar rails 3 (3a, 3b) are placed on the fixing band and are fastened and fixed so as not to come off.

  By the way, although the fixing member 4 is attached to the back side of the solar cell module 5, it is preferable to use an opening / closing mechanism having a spring mechanism as shown in FIG. This is because when the columnar rail is inserted into the shaft groove portion 9 of the fixing member 4, the lock member 10 opens outward as indicated by the broken line to give way, and when the columnar rail is inserted until it reaches a predetermined position, the spring B The restoring force of the lock member 10 returns to the initial position and closes the opening of the support member 8, thereby preventing the columnar rail from coming off. In this opening / closing mechanism, the locking mechanism is easily released by squeezing the knob portion A of the fixing member 4 to the inside (in the direction of the arrow) so that the solar cell module can be removed from the gantry. Good sex.

  Then, the solar cell module 5 with the fixing member 4 is placed on the two columnar rails 3a and 3b from above and pushed to a position where the locking mechanism of the fixing member 4 is operated, so that the base as shown in FIG. The solar cell module 5 is fixed on the top.

  On the other hand, if the solar cell module 5 is moved upward with the fixing member 4 unlocked, the solar cell module 5 can be easily removed from the columnar rail 3, but as shown in FIG. When the solar cell module 5 is lifted with only one fixing member 4b removed from the columnar rail 3b, the solar cell module 5 can be rotated using the other columnar rail 3a as the central axis of rotation. As a result, maintenance / inspection or removal work on the back side of the solar cell module can be performed very easily.

  Moreover, after fixing both the fixing members 4 (4a, 4b) to the columnar rails 3 (3a, 3b) again, this time, if the fixing member 4a is removed from the columnar rails 3a, as shown in FIG. The solar cell module 5 can be rotated with the columnar rail 3b as the central axis of rotation, and the rotation direction can be selected depending on the installation status of the solar cell module and the ease of work. .

  Next, the rotation operation of the columnar rail and the fixing member as described above will be described in detail. In order to make the operation easy to understand, the example of FIG. 1 is used.

  As shown in FIG. 7A, the fixing member 4 includes a support portion 8, a shaft groove portion 9, and a lock member 10. The lock member 10 is attached to the support member 8 by a fastening member 16 such as a screw or a bolt. By loosening the fastening member 16 appropriately, a part of the support member 8 is opened as shown in FIG. The shaft groove portion 9 can be in a state in which the columnar rail 3 having a cylindrical shape can be inserted. Then, as shown in FIG. 7C, after inserting the columnar rail 3 into the shaft groove portion 9, the fixing member 4 is fixed to the columnar rail 3 by closing the opening of the support member 8 with the lock member 10 again. There is nothing. Moreover, since the fixing member 4 can be rotated along the outer periphery of the columnar rail 3 as indicated by an arrow in the figure, the solar cell module attached on the fixing member 4 with the columnar rail 3 as the central axis of rotation is used. It can be rotated. Furthermore, if a member having a large coefficient of friction (for example, a brake pad) is interposed in a portion that contacts the columnar rail 3 inside the lock member 10, an appropriate reaction force is generated at the time of rotation, and the heavy sun It is possible to ensure the safety of the operator when turning down the battery module or the like and reduce the burden of supporting the weight.

  In addition, by using an elastically deformable member such as a spring as the lock member, it is possible to perform firm fixation that does not easily move even when a rotational moment is applied.

  Similarly, when a prismatic rail is used as the columnar rail, the fixing member 4 can be attached to the quadrangular columnar rail 33 and rotated as shown in FIG. 8B as shown in FIG. . Although this example is a quadrangular prism, the same applies to pentagonal and hexagonal prisms. Since the quadrangular prism supports the fixing member 4 by two vertices, the stability is improved compared to that supported by one point like a cylinder. To do. However, the more a polygonal column, the smoother the sliding like a cylindrical shape.

  Further, in addition to the columnar shape and the polygonal column shape, the same effect can be obtained with a U-shaped rail 34 as shown in FIG. 9 or an I-shaped rail as shown in FIG.

  Furthermore, in order to prevent hindrance to rotation in the above-described prismatic rail, the space between the shaft groove and the lock member is the length of the diagonal line of the columnar rail, so that a gap is generated between the columnar rail and the lock member. Although it is only fixed by the dead weight of a mounted object such as a solar cell module, the lock member 31 can be firmly fixed by using an elastically deformable member like a spring. Specifically, as shown in FIG. 11A, in the state where the fixing member 4 is attached to the square columnar rail 33, the bottom surface 33a of the square columnar rail 33 is suppressed by the lock member 31, and Even if such a rotational moment is applied, the fixing member 4 is fixed in a stable state against an external force. This makes it possible to temporarily fix during maintenance and improve workability.

  Furthermore, the inclination angle of the solar cell module can be changed by increasing the angle at which the columnar rail is held by the lock member as a pentagonal column or hexagonal column so that the inclination holding angle of the leg member can be selected.

  In addition, when the external force is intentionally increased to a certain level or more, the lock member 31 is pushed and deformed by the corner portion 33b of the square columnar rail 33 as shown in FIG. The fixing member 4 can be rotated. 11C, the lock member 31 is elastically deformed at the position of the side portion 33c of the quadrangular columnar rail 33 and returns to the original shape. Here, when the external force is weakened, the lock member 31 tries to fix the fixing member 4 in that state again, so that the solar cell module 5 on the fixing member 4 is held in an upright state, which is suitable for temporary fixing during maintenance. It is.

  If this is utilized, as shown in FIG. 12, the leg members 7a and 7b are made to have different lengths and are supported so that the height difference is generated in the columnar rails 3 (3a, 3b). If an inclination angle is provided and the angle at which the columnar rail is held by the lock member as a pentagonal column or a hexagonal column is increased, the inclination holding angle of the leg member 7b can be selected. The inclination angle can be changed. At this time, if the base block 6 is arranged at the tip of the leg members 7a and 7b, it is possible to prevent the air from rising due to wind or the like.

  As described above in detail, if a solar power generation apparatus is used in which a solar cell module is installed using a fixing member that rotates along the outer periphery of the columnar rail across the two columnar rails, various shapes are provided. It can be installed on a columnar rail and has good workability and maintainability. In addition, the inclination angle can be selected to contribute to the improvement of power generation efficiency.

  Next, an embodiment of another photovoltaic power generation apparatus according to the present invention will be described with reference to schematic drawings.

  As shown in FIG. 13, two columnar rails 3 (3 a, 3 b) may be arranged in the vertical direction and the solar cell module 5 may be fixed by the fixing member 4. In this case, for example, when the solar cell module 5 is to be rotated about the columnar rail 3a as the center axis of rotation, the solar cell increases as the inclination angle due to the height difference between the leg members 7a and 7b increases (up to 90 °). Since the center of gravity when the module 5 is rotated moves to the columnar rail 3a, the force required for the operator to rotate the solar cell module 5 can be reduced, and the rotation becomes easy.

  Moreover, as shown in FIG. 14, it can also be set as the solar power generation device which has arrange | positioned several solar cell module 5a-5c on the two columnar rails 3a and 3b, and made it the solar cell array 30. FIG. Even when a plurality of such solar cell arrays are installed adjacent to each other, maintenance can be easily performed. For example, when the solar cell module 5d has failed, it is assumed that there is an installation situation where only the solar cell module 5b has an intrusion path (eg, solar cell modules are also installed in the surrounding area, not shown). However, if the solar cell module 5b is first rotated and opened to the solar cell module 5e side, and then the solar cell module 5a is rotated and opened to the outside, the solar cells can be easily removed without sequentially removing the surrounding solar cell modules. Module 5d can be reached. Thus, in the photovoltaic power generation apparatus in which a large number of solar cell modules are densely installed, the effect of minimizing the power generation area and not losing maintainability is great.

  In addition, the power generation output of the photovoltaic power generation apparatus including this example is in the columnar rails 3b and 3c as in the transmission cables 17a and 17b in the figure, or in the concave portions of the U-shaped rail and the I-shaped rail. If the power transmission cable of the solar cell module is stored, the external appearance is good because the wiring such as the cable cannot be seen from the outside.

It is a perspective view which shows typically the installation state of the solar power generation device which concerns on this invention. It is a perspective view explaining the mode of construction of the solar power generation device concerning the present invention. It is a perspective view explaining the mode of construction of the solar power generation device concerning the present invention. It is a perspective view which shows a mode that the solar cell module of the solar power generation device which concerns on this invention was fixed. It is a perspective view explaining a mode that the solar cell module of the solar power generation device which concerns on this invention is rotated. It is a perspective view explaining a mode that the solar cell module of the solar power generation device which concerns on this invention is rotated to a reverse direction. (A)-(c) is sectional drawing explaining a mode that the fixing device of the solar power generation device which concerns on this invention is attached to a cylindrical rail. (A), (b) is sectional drawing explaining a mode that the fixing device of the solar power generation device which concerns on this invention is attached to a square columnar rail. It is sectional drawing explaining a mode that the fixing device of the solar power generation device which concerns on this invention is attached to a U-shaped rail. It is sectional drawing explaining a mode that the fixing device of the solar power generation device which concerns on this invention is attached to an I-shaped rail. (A)-(c) is sectional drawing explaining a mode that the fixing device of the solar power generation device which concerns on this invention is firmly fixed to a square columnar rail. It is a perspective view which shows typically embodiment of the other solar power generation device which concerns on this invention. It is a perspective view which shows typically embodiment of the other solar power generation device which concerns on this invention. It is a perspective view which shows the solar power generation system by which many solar power generation devices which concern on this invention were fixed. It is a side view which shows one Example of the fixing member of the solar power generation device which concerns on this invention. It is a perspective view of the conventional solar power generation system. It is a schematic sectional drawing of the conventional solar cell module. It is a schematic sectional drawing which shows typically the state which fixed the conventional solar cell module to the mount frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a, 1b: Base rail 2, 2a, 2b: Fixed band 3, 3a-3d: Columnar rail 4: Fixed member 5, 5a-5f: Solar cell module 6: Base block 7a, 7b: Leg member 8: Support Part 9: Shaft groove part 10: Lock member 11: Foundation 12: Fastening member 13: Support bracket 14: Base rail 15: Spacer 16: Fastening member 17a, 17b: Power transmission cable 20: Solar cell module 21: Frame body 23: Sun Battery element 24: Light transmission plate 25: Filler 26: Weather resistant film 30: Solar cell array 31: Lock member 33: Square columnar rail 33a: Bottom surface 33b: Corner portion 33c: Side portion 34: U-shaped rail 35: I-shaped rail J: Solar power generation device S: Solar power generation device A: Knob portion B: Spring

Claims (2)

A photovoltaic power generation system comprising a solar cell module, two columnar rails, and a fixing member attached to each of the two columnar rails,
The fixing member is fixed to two opposite sides of the solar cell module, and is fixed to be rotatable with respect to one of the two columnar rails, and is detachable with respect to the other columnar rail. A solar power generation device characterized by being fixed. The solar power generation device according to claim 1, wherein a plurality of solar cell modules are attached to the columnar rail.

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