JP2017034787A - Solar cell device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell device which improves a performance of load resistance in simple structure.SOLUTION: A solar cell device 1 comprises: a rectangular solar cell panel around which a frame 16 is fitted, the frame including a first frame member 161, a second frame member 162 opposing the first frame member 161, a third frame member 163 and a fourth frame member 164 opposing the third frame member 163; a long first stand member 23 positioned at a lower side of the third frame member 163 while being spaced apart from the third frame member 163, and disposed in a first direction; a plurality of long second stand members 24 which are positioned on the first stand member 23 in a second direction across the first direction and on which the first frame member 161 and the second frame member 162 are disposed; and a fixing member 26 which is positioned within the space and disposed on the first stand member 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar cell device.

  With the recent increase in environmental protection, solar power generation using a solar cell device has attracted attention. The solar cell device is required to be installed even in a more severe area. For example, in an area where typhoons are likely to occur, measures are required to prevent the solar cell module of the solar cell device from being blown away by the wind. As a specific countermeasure, for example, a technique for fixing the frame of the solar cell module with a fixing tool has been proposed (see, for example, Patent Document 1).

JP 2000-87522 A

  For example, a heavy snowfall area is an example of a severe environment. In such a region, the snow on the solar cell device and the snow crystals outside the solar cell device are combined and integrated, and both the snow accumulated around the solar cell device and the snow accumulated on the solar cell device Is applied to the solar cell device. In such a case, the solar cell device is easily damaged. Moreover, in the fixture of the said patent document 1, the flame | frame of a solar cell module cannot be supported from the lower side. Therefore, the tolerance with respect to the load of the perpendicular direction produced by the sedimentation force of the snow cover added to the outer edge part of a solar cell apparatus is low.

  One of the objects of the present invention is to provide a solar cell device having a simple structure and a high load resistance against a snow load.

  A solar cell device according to an embodiment of the present invention includes a first frame member, a second frame member that faces the first frame member, a third frame member, and a fourth frame member that faces the third frame member. A rectangular solar cell panel having a frame attached to the periphery thereof, and a long second panel disposed along the first direction, positioned below the third frame member and spaced apart from the third frame member. A plurality of elongate members each positioned on the first frame member along a second direction intersecting the first direction and the first frame member and the second frame member disposed respectively; A second gantry member; and a fixing member located within the interval and disposed on the first gantry member. In the present embodiment, the third frame member includes an attachment portion to which the solar cell panel is attached, a side portion connected to the attachment portion, and the side portion, and the fourth frame from the side portion. A bottom portion extending toward the member, and the fixing member contacts the side portion at a position opposite to the first frame portion and the fourth frame member. A second portion.

  According to the solar cell device according to the present embodiment, it is possible to reduce the deformation of the frame arranged on the solar cell panel with a simple structure. As a result, the load bearing performance of the solar cell device is improved.

FIG. 1 is a diagram showing a solar cell device and a solar cell module mount according to an embodiment of the present invention, in which FIG. 1 (a) is a perspective view of the solar cell device, and FIG. 1 (b) is from the solar cell device. It is a perspective view which removes a solar cell module and shows the mount for solar cell modules. FIG. 2 is a diagram showing an example of a solar cell module used in the solar cell device according to one embodiment of the present invention, and FIG. 2 (a) is a plan view of the solar cell module viewed from the light receiving surface side, FIG. FIG. 2B is an end view when cut along the line AA ′ in FIG. 2A, and FIG. 2C is an end view when cut along the line BB ′ in FIG. . 3A and 3B are diagrams showing a fixing member used in the solar cell device according to the embodiment of the present invention. FIG. 3A is a perspective view and FIG. 3B is a side view. FIG. 4 is a view showing a part of the solar cell device according to one embodiment of the present invention. FIG. 4 (a) is an enlarged perspective view showing a portion C of FIG. 1 (a), and FIG. ) Is an end view taken along the line DD ′ in FIG. FIG. 5 is a model diagram showing the load and deflection applied to the solar cell device according to one embodiment of the present invention, and FIG. 5 (a) shows the solar cell device and the surrounding snow in FIG. 4 (b). 5B is a model diagram schematically showing the force applied to the third frame member of the solar cell device at the end face of FIG. 4B. FIG. 6 is a view showing a fixing member of a solar cell device according to another embodiment of the present invention. FIG. 6 (a) is a perspective view corresponding to FIG. 3 (a), and FIG. 6 (b) is FIG. It is an end elevation corresponding to (b). FIG. 7 is a model diagram showing a load applied to a fixing member of a solar cell device according to another embodiment of the present invention. FIG. 8 is a diagram showing a part of a solar cell device according to another embodiment of the present invention, and is an end view corresponding to FIG. FIGS. 9A and 9B are views showing a part of a solar cell device according to another embodiment of the present invention, and are end views corresponding to FIG. 4B.

[First Embodiment]
An embodiment of a solar cell device according to the present invention will be described with reference to the drawings. In the following description, for example, the direction in which the light receiving surface is inclined with respect to the installation surface 3 parallel to the light receiving surface of the solar cell module 2 constituting the solar cell device 1 according to the embodiment of the present invention is defined as the Y direction. The direction along the normal line of the light receiving surface is the Z direction, and the direction perpendicular to the Y direction and the Z axis direction is the X direction. Further, the direction from the back side to the front side of the drawing along the X direction is defined as + X direction, and the direction opposite to the + X direction is defined as -X direction. Further, the direction from the front side to the back side of the paper surface along the Y direction is defined as + Y direction, and the direction opposite to the + Y direction is defined as -Y direction. Further, a direction toward the higher side along the Z-axis direction is defined as + Z direction, and a direction opposite to the + Z direction is defined as −Z direction. In addition, a plane including the X axis and the Y axis is an XY plane, a plane including the Y axis and the Z axis is a YZ plane, and a plane including the Z axis and the X axis is a ZX plane. Furthermore, in the following description, the + Z direction with the light source (sun) of light incident on the light receiving surface of the solar cell module 2 may be referred to as “up” and the −Z direction may be referred to as “down”. Moreover, in FIG. 1 etc., the downward direction in the inclination direction of the solar cell device 1 may be referred to as an eave side, and the upper direction in the inclination direction may be referred to as a ridge side. In addition, each drawing is shown typically, and the size and positional relationship of each component are not shown accurately.

  As shown in FIG. 1, the solar cell apparatus 1 is installed on the foundation 21 arrange | positioned at the installation surface 3 which is a horizontal surface, for example. The solar cell device 1 includes a pedestal member 22 disposed on the foundation 21, and a plurality of first pedestal members 23 and second pedestal members 24 installed on the upper portion of the pedestal member 22. In the solar cell device 1, the solar cell module 2 is installed on the first frame member 23 and the second frame member 24. Moreover, in this embodiment, it becomes the solar cell module mount 4 including the foundation 21, the pedestal member 22, the first mount member 23, and the second mount member 24.

  Next, each element which comprises the solar cell apparatus 1 is demonstrated in detail.

<Solar cell module>
First, the solar cell module 2 that functions as power generation means of the solar cell device 1 will be described. As shown in FIGS. 2A, 2B, and 2C, the solar cell module 2 includes an aggregate formed by electrically connecting a plurality of solar cell elements 12 to each other. As shown in FIG. 2B, the solar cell module 2 has a super straight structure in which light is incident from the side of the translucent substrate on which the solar cell elements 12 are disposed. The solar cell module can be selected from various structures such as a double glass structure in which solar cell elements are surrounded by a glass substrate or a substrate structure in which light is incident from the opposite side of the translucent substrate. In particular, the super straight structure is easy to apply to single crystal silicon or polycrystalline silicon solar cells with a large production amount. Hereinafter, an example of a solar cell module having a super straight structure will be described.

  As shown in FIG. 2, the solar cell module 2 includes a translucent substrate 11, a plurality of solar cell elements 12 arranged at predetermined positions with respect to the translucent substrate 11, and the periphery of the solar cell elements 12. The solar cell panel 15 is configured by laminating a filler 13 for protecting the back surface and a back surface protection member 14. Here, the solar cell panel 15 has a light receiving surface 15a on which light is mainly incident and a back surface 15b located on the back side of the light receiving surface 15a.

  The translucent substrate 11 has a function of protecting the solar cell element 12 and the like from the light receiving surface 15a side. As such a translucent board | substrate 11, tempered glass or white plate glass etc. can be used, for example.

  The solar cell element 12 has a function of converting incident light into electricity. Such a solar cell element 12 includes, for example, a semiconductor substrate made of single crystal silicon or polycrystalline silicon, and electrodes provided on the front surface (upper surface) and the back surface (lower surface) of the semiconductor substrate. The solar cell element 12 having a single crystal silicon substrate or a polycrystalline silicon substrate has, for example, a quadrangular shape in plan view. At this time, the size of one side of the solar cell element 12 is, for example, 100 to 200 mm. In such a solar cell element 12, for example, an electrode located on the surface of one solar cell element 12 and an electrode located on the back surface of the other solar cell element 12 among the adjacent solar cell elements 12 are wiring members. (Inner leads) are electrically connected. Thereby, the several solar cell element 12 is arranged so that it may be connected in series. As such a wiring material, for example, a copper foil coated with solder can be used.

  In addition, the kind in particular of the solar cell element 12 is not restrict | limited. In addition to the above, for example, a thin-film solar cell element in which the photoelectric conversion portion in the solar cell element is made of a material such as amorphous silicon, chalcopyrite such as CIGS, or CdTe may be employed. As the above-described thin-film solar cell element, for example, a glass substrate on which a photoelectric conversion layer made of amorphous silicon, CIGS, CdTe, or the like, a transparent electrode, and the like are appropriately stacked can be used. Such a thin-film solar cell element is obtained by patterning and integrating the photoelectric conversion layer and the transparent electrode on a glass substrate. Therefore, in the thin film solar cell element, a wiring material for connecting a plurality of photoelectric conversion layers can be eliminated. Furthermore, the solar cell element 12 may be of a type in which a thin film of amorphous silicon is formed on a single crystal or polycrystalline silicon substrate.

  The fillers 13 provided on the light receiving surface 15 a and the back surface 15 b side of the solar cell element 12 have a function of sealing the solar cell element 12. As such a filler 13, for example, a thermosetting resin such as an ethylene vinyl acetylate copolymer can be used.

The back surface protection member 14 has a function of protecting the solar cell element 12 and the like from the back surface 15b side. Such a back surface protection member 14 is bonded to the filler 13 located on the back surface 15 b side of the solar cell panel 15. As the back surface protection member 14, for example, PVF (polyvinyl fluoride), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or a laminate of these appropriately selected can be used.

  The solar cell module 2 has a frame 16 around a rectangular solar cell panel 15. The frame 16 has a rod shape having substantially the same length as each side of the solar cell panel 15 and has a function of holding the edge of the solar cell panel 15. Such a frame 16 can be manufactured by extruding aluminum, for example. The frame 16 includes a first frame member 161, a second frame member 162, a third frame member 163, and a fourth frame member 164. In the present embodiment, the first frame member 161 and the second frame member 162 are positioned along the X direction and are opposed to each other with a gap in the Y direction. Further, the third frame member 163 is located along the Y direction and is located above the first gantry member 23. The fourth frame member 164 is located along the Y direction and is opposed to the third frame member 163 with an interval in the X direction. Each frame member is fixed to both ends by screws or the like.

  In addition, the third frame member 163 is a concave portion that can be attached by fitting the solar cell panel 15, and is attached to the attachment portion 16 a and perpendicular to the main surface of the solar cell panel 15 (− (Z direction) has a plate-like side portion 16b extending downwardly away from the solar cell panel 15. The third frame member 163 has a plate-like bottom portion 16c that is connected to the side portion 16b and extends in parallel with the main surface of the solar cell panel 15 and toward the fourth frame member 16 side.

<Basic>
The foundation 21 has a function as a foundation of the solar cell device 1. As such a foundation 21, for example, a cloth foundation in which long concrete is embedded in the soil can be used. At this time, when the ground is soft, the width of the bottom of the fabric foundation may be widened to reduce the contact pressure. Such a fabric foundation is supported on the ground with a large area at the bottom. Thereby, the distortion of the solar cell apparatus 1 accompanying the uneven settlement of the foundation 21 can be reduced. As a result, damage to the solar cell module 2 can be reduced.

  In addition, as the foundation 21, you may use the screw pile comprised, for example with stainless steel. The screw pile is provided with a spiral wing on the outer periphery of a pile body having a circular cross section, and has improved circumferential friction and pulling resistance. By using such a friction pile for the foundation 21, the pulling resistance when the wind pressure in the blowing direction is applied to the solar cell device 1 is increased. As a result, the strength of the solar cell device 1 can be increased.

<Base member>
The pedestal member 22 is a member that serves as a base for supporting the first gantry member 23 disposed on the foundation 21. As shown in FIG. 1, the pedestal member 22 supports the first pedestal member 23 at the upper part of two pedestal members 22 adjacent in the Y direction. The pedestal member 22 is disposed on the installation surface 3 that is a horizontal plane so that the longitudinal direction thereof is perpendicular to the installation surface 3.

  In this embodiment, two types of base members 22 are used. Specifically, the solar cell device 1 includes a pedestal member 221 that supports the lower side of the inclination of the first gantry member 23 and a pedestal member 222 that supports the upper side of the inclination of the first gantry member 23. The base member 221 is a tubular member having a trapezoidal cross-sectional shape. The pedestal member 222 is a column having a cross-sectional shape similar to the I-type or H-type standing on the foundation 21. Such a base member 22 can be formed by, for example, extrusion molding of an aluminum alloy.

<First mount member>
As shown in FIGS. 1 and 4, the first pedestal member 23 is a long member that is stretched over the pedestal member 22 adjacent in the Y direction so as to be inclined with respect to the installation surface 3. That is, the first gantry member 23 is arranged along the Y direction (first direction). In the present embodiment, the two first mount members 23 are disposed so as to be substantially parallel to each other in the X direction. In the present embodiment, the two first mount members 23 are referred to as a first mount member 231 and a first mount member 232 in order in the + X direction. Each first mount member 23 is stretched over the pedestal member 221 and the pedestal member 222.

  The first gantry member 23 is, for example, a bar having a substantially square pipe-like cross-sectional shape. The first gantry member 23 has an upper surface 23a on the + Z direction side. The first gantry member 23 is provided with a bolt groove 23b provided along the longitudinal direction of the first gantry member 23 on the upper surface 23a. The bolt groove 23b includes a bolt head of the screw member 27. The part fits.

  Such a 1st mount member 23 can be formed by extrusion molding of an aluminum alloy, for example.

<Second mount member>
As shown in FIGS. 1 and 4, the second gantry member 24 is arranged on the first gantry member 23 in the X direction (first direction) so as to intersect with the longitudinal direction of the first gantry member 23 (orthogonal in the present embodiment). It is a member stretched along (two directions). In the present embodiment, the four second mount members 24 are arranged so as to be substantially parallel to each other in the Y direction.

  The second gantry member 24 is, for example, a rod-shaped member that has a square pipe-like cross-sectional shape and is elongated along the X direction. Although the dimension in the longitudinal direction (X direction) of the 2nd mount member 24 can be suitably selected according to the dimension and material of the solar cell module 2, For example, as a dimension in the X direction of one to several solar cell modules 2 Also good. Moreover, the 2nd mount member 24 has the recessed part 24a each opened in the + Y direction and -Y direction in the upper part side. The second gantry member 24 has a plate-like flange portion 24b extending in the + Y direction and the −Y direction on the lower side. The second gantry member 24 is fixed on the first gantry member 23 by pressing the flange portion 24 b by the stopper member 25. The plurality of second gantry members 24 are arranged in parallel with each other at intervals of substantially the same length as the lengths of the third frame member 163 and the fourth frame member 164 of the solar cell module 2 along the Y direction. In the present embodiment, the second mount member 24 is referred to as a second mount member 241, a second mount member 242, a second mount member 243, and a second mount member 244 in order in the + Y direction. As shown in FIG. 4A, the first frame member 161 and the second frame member 162 are fixed to a pair of adjacent second gantry members 24, respectively. Specifically, the first frame member 161 and the second frame member 162 are inserted into the recessed portion 24 a of the second gantry member 24 and fixed.

  Such a 2nd mount member 24 can be formed by extrusion molding of an aluminum alloy, for example.

<Fixing member>
As shown in FIGS. 1, 3, and 4, the fixing member 26 has a schematic shape including square pipe-shaped portions that are open on both sides in the Y direction and ribs that are erected on the top.

As shown in FIG. 3B, the fixing member 26 is provided with a plate-like first portion 26a having an upper surface located in the + Z direction and rising from the first portion 26a in the + Z direction when viewed from the Y direction. And a plate-like second portion 26b corresponding to the rib. Further, the fixing member 26 is a plate-like third portion 26c having a lower surface located on the −Z direction side of the first portion 26a, and the first portion 26a and the second portion 26b on the −Z direction side of the second portion 26b. The plate-shaped fourth portion 26d having one side surface connecting the three portions 26c, and the fixing member 26 is disposed to face the fourth portion 26d, and the first portion 26a and the third portion 26c It has the plate-like 5th site | part 26e which has the other side surface which connects between. The third portion 26c has a portion that protrudes outward from the fifth portion 26e. The third portion 26c is provided with a first hole portion 26h into which the bolt of the screw member 27 is inserted in the protruding portion.

  The width of the fixing member 26 in the X direction may be almost the same as the width of the first gantry member 23 in the X direction. Further, the distance in the Z direction between the first portion 26 a and the third portion 26 c of the fixing member 26 is the distance in the Z direction between the bottom portion 16 c of the third frame member 163 and the upper surface 23 a of the first mount member 23. It should just be the same.

  As shown in FIGS. 1 and 4, the fixing member 26 is disposed in contact with the first mount member 23. More specifically, the fixing member 26 is located between the upper surface 23a of the first gantry member 23 and the bottom portion 16c of the third frame member 163 (interval) below a substantially intermediate position of the third frame member 163 extending in the Y direction. Inside). The fixing member 26 is inserted on the first hole portion 26 h of the third part and is fixed on the first gantry member 23 by a screw member 27 attached to the bolt groove 23 b of the first gantry member 23. Thereby, the fixing member 26 can fix the third frame member 163 through the foundation 21, the pedestal member 22, and the first gantry member 23 so as not to be displaced from the position of the desired installation surface 3.

  Accordingly, the fixing member 26 is disposed such that the first portion 26 a is in contact with a part of the bottom portion 26 c of the third frame member 163. In addition, you may arrange | position between the 1st site | part 26a and the bottom part 26c so that it may contact immediately, when a clearance is provided and a 3rd frame member produces bending. Such a clearance is provided in order to prevent the solar cell module mount 4 from being assembled due to interference between members when the solar cell module mount 4 is assembled. In the following description, even when a clearance is provided, the expression “contact” is used as a substantial contact. The size of such clearance may be in a range in which the third frame member 163 does not undergo plastic deformation, for example, in a range of 0.5 mm to 2 mm.

  The second portion 26b is disposed in contact with a part of the side portion 16b of the third frame member 163. Similarly, a slight clearance may be provided between the second portion 26b and the side portion 16b.

  Next, the load bearing performance of the solar cell device 1 according to this embodiment will be described with reference to the drawings.

  As shown in FIG. 5A, when the snow S is piled up so as to cover the solar cell device 1 and the surrounding installation surface 3, the snow S is compressed on the solar cell device 1 due to compression by its own weight or up and down of the temperature. It behaves as if the crystals of snow S on the outside of the solar cell device 1 are bonded together. In this way, when the snow S behaves as if it were integrated, not only the snow load above the solar cell device 1 but also the snow load around the solar cell device 1 is applied, particularly at the outer edge of the solar cell device 1. The integrated downward snow load 101 in the vertical direction is applied.

The snow load 101 is applied as a first force 102 to the attachment portion 16a of the third frame member 163 located at the outer edge of the solar cell device 1 via the solar cell panel 2. The first force 102 becomes a bending stress that bends the third frame member 163 in the −Z direction. Further, the first force 102 includes a vector of force applied from the solar cell panel 15 to the mounting portion 16a, and the third frame member 1.
63 is shifted from the center of gravity G. In the solar cell device 1, since both end portions of the third frame member 163 are fixed by the first frame member 161 and the second frame member 162, the first force 102 has a center of gravity at the intermediate portion of the third frame member 163. It acts as a torsional moment 103 that twists about an axis along the Y direction.

  In addition, the solar panel 15 that has been bent by receiving the snow load 101 is subjected to the second force 104 in the direction of pushing the third frame member 163 in the + X direction. Further, when the combined snow crystals adhere to the mounting portion 16a of the third frame member 163 and the step 17 of the solar cell panel 15, the third frame member 163 tries to pull out the third frame member 163 from the solar cell panel 15 in the + X direction. The force 105 is added.

  As described above, when the first force 102, the torsional moment 103, the second force 104, and the third force 105 are applied to the third frame member 163, the third frame member 163 is deformed, and the first frame 102 is deformed. The solar cell panel 15 may drop off from the attachment portion 16a of the three frame member 163.

  On the other hand, in the present embodiment, the first portion 26 a of the fixing member 26 is in contact with and supported by the bottom portion 26 c of the third frame member 163. Accordingly, in the present embodiment, the first reaction force 106 can be generated with respect to the first force 102 that bends the third frame member 163 downward in the vertical direction. As a result, in this embodiment, the bending deformation of the third frame member 163 in the −Z direction can be reduced.

  Further, in the present embodiment, the second portion 26b of the fixing member 26 and the side portion 16b of the third frame member 163 are in contact with each other. Thereby, in the present embodiment, the second reaction force 107 can be generated with respect to the torsional moment 103, the second force 104, and the third force 105. As a result, in this embodiment, the torsional deformation of the third frame member 163 and the movement of the solar cell device 1 to the outside (+ X direction) can be reduced.

  In the present embodiment, the first portion 26 a of the fixing member 26 contacts the bottom portion 16 c of the third frame member 163, and the second portion 26 b contacts the side portion 16 b of the third frame member 163, whereby the third frame member The bending, twisting, and excessive movement of 163 can be reduced. Thereby, in this embodiment, it becomes difficult for the solar cell panel 15 to drop out of the third frame member 163.

  Further, the solar cell device 1 uses a relatively simple construction method in which the simple fixing member 26 having the first portion 26 a and the second portion 26 b is disposed between the solar cell device 1 and the first mount member 23. Thus, load bearing performance can be improved.

[Second Embodiment]
As shown in FIG. 6, the solar cell device 1 according to the present embodiment is different from the first embodiment in the structure of the fixing member 26. The fixing member 26 is connected via a third part 26c located on the first mount member 23, a first connection part 26j connected to the first part 26a, and a second connection part 26k connected to the third part 26c. The fourth portion 26d and the fifth portion 26e facing the fourth portion 26d are provided. In the present embodiment, the fourth portion 26d is inclined such that the second connection portion 26k is located farther from the fifth portion 26e than the first connection portion 26j. In other words, in the fixing member 26, the fourth portion 26d is inclined in a direction away from the fifth portion 26e as the fourth portion 26d approaches the third portion 26c from the first portion 26a. In the present embodiment, the connection portion between the first portion 26a and the fifth portion 26e is the third connection portion 26l, and the connection portion between the third portion 26c and the fifth portion 26e is the fourth connection portion 26m.

In the present embodiment, the trapezoidal truss structure surrounded by the first part 26a, the third part 26c, the fourth part 26d, and the fifth part 26e by having the fourth part 26d inclined with respect to the fifth part 26e. It can be set as the structure similar to. In such a case, as shown in FIG. 7, when the second portion 26b receives a load (fourth force 108) in the + X direction from the third frame member 163, a tensile stress 109 is generated in the fourth portion 26d. . Thus, since the fixing member 26 in the present embodiment has a shape close to the truss structure, the first connection portion 26j, the second connection portion 26k, the third connection portion 26l, and the fourth connection with respect to a load applied from the outside. Bending stress is less likely to occur at the portion 26m. Therefore, in the present embodiment, the first portion 26a and the third portion 26c have high strength against deformation that shifts in the X direction and deformation that is crushed in the Z direction. As a result, since the strength of the third frame member 163 can be increased, the load bearing performance of the solar cell device 1 can be increased.

[Third Embodiment]
As shown in FIG. 8, the solar cell device 1 according to the present embodiment is the first implementation in that it has a screw member 27 that fixes the first portion 26 a of the fixing member 26 and the bottom portion 16 c of the third frame member 163. Different from form.

  The bottom portion 16c of the third frame member 163 is provided with a second hole portion 16c1 through which the screw member 27 is inserted. Moreover, the 1st site | part 26a of the fixing member 26 in this embodiment is extended in the 4th frame member 164 side rather than the 1st connection part 26j. A third hole portion 26i facing the second hole portion 16c1 is provided at a portion where the first portion 26a extends. The screw member 27 is inserted through the second hole portion 16c1 and the third hole portion 26i. As a result, the first portion 26 a of the fixing member 26 and the third frame member 163 are fixed by the screw member 27.

  In the present embodiment, since the third frame member 163 can be firmly fixed to the fixing member 26, the load resistance performance of the solar cell device 1 against negative pressure load such as wind load can be further increased.

  As mentioned above, although embodiment of this invention was illustrated, this invention is not limited to the said embodiment, It cannot be overemphasized that it can be made arbitrary, unless it deviates from the objective of this invention.

  For example, as illustrated in FIG. 9A, the fixing member 26 is connected to the first portion 26 a and is opposed to the side surface 16 d on the fourth frame member 164 side of the bottom portion 16 c of the third frame member 163. You may have. Such a fixing member 26 can reduce deformation such that the third frame member 163 (bottom portion 16c) is twisted in a direction approaching the fourth frame member 164. As a result, dropping of the solar cell panel 15 can be reduced. Further, as shown in FIG. 9B, the fixing member 26 is connected to the sixth portion 26 f and is positioned in a state of covering the upper surface 16 e that is the upper surface of the bottom portion 16 c of the third frame member 163. You may have the site | part 26g. In such a fixing member 26, even if a negative pressure is applied to the solar cell module 2, the movement of the solar cell module 2 in the + Z direction can be prevented by the seventh portion 26g. Thereby, the load bearing performance of the solar cell device 1 is further increased. In the above-described embodiment, one fixing member 26 is provided for one third frame member 163, but a plurality of fixing members 26 may be provided. Needless to say, the present invention includes various combinations of the above-described embodiments.

1: Solar cell device 2: Solar cell module 3: Installation surface 4: Solar cell module mount 11: Translucent substrate 12: Solar cell element 13: Filler 14: Back surface protection member 15: Solar cell panel 15a: Light receiving surface 15b: Back surface 16: Frame member 161: First frame member 162: Second frame member 163: Third frame member 164: Fourth frame member 16a: Mounting portion 16b: Side portion 16c: Bottom portion 16c1: Second hole portion 16d: Side 16e: Upper surface 17: Step 21: Foundation 22, 221, 222: Base member 23, 231, 232: First frame member 23a: Upper surface 23b: Bolt grooves 24, 241, 242, 243, 244: Second frame member 24a : Concave part 24b: flange part 25: stopper member 26: fixing member 26a: first part 26b: second part 26c: third part Position 26d: 4th part 26e: 5th part 26f: 6th part 26g: 7th part 26h: 1st hole part 26i: 3rd hole part 26j: 1st connection part 26k: 2nd connection part 26l: 3rd connection Portion 26m: Fourth connecting portion 27: Screw member 101: Snow load 102: First force 103: Torsion moment 104: Second force 105: Third force 106: First reaction force 107: Second Reaction force 108: fourth force 109: tensile stress G: center of gravity S: snow

Claims (5)

A rectangular solar cell panel around which a frame having a first frame member, a second frame member facing the first frame member, a third frame member, and a fourth frame member facing the third frame member is attached. When,
An elongated first gantry member that is positioned below the third frame member at a distance from the third frame member and disposed along the first direction;
A plurality of elongated second gantry members positioned on the first gantry member along a second direction intersecting the first direction, the first frame member and the second frame member being respectively disposed; ,
A fixing member positioned within the interval and disposed on the first gantry member,
The third frame member is connected to the attachment portion to which the solar cell panel is attached, a side portion connected to the attachment portion, the side portion, and extends from the side portion toward the fourth frame member. And a bottom portion,
The said fixing member is a solar cell apparatus which has the 1st site | part which contacts a part of said bottom part, and the 2nd site | part which contacts the said side part in the position on the opposite side to the said 4th frame member. The fixing member includes a third portion located on the first gantry member;
A first connection part connected to the first part, a fourth part connected via a second connection part connected to the three surfaces, and a fifth part facing the fourth part; ,
2. The solar cell device according to claim 1, wherein the fourth part is inclined such that the second connection part is located farther from the fifth part than the first connection part.   The solar cell device according to claim 1, further comprising a screw member that fixes the first portion of the fixing member and the third frame member.   4. The solar cell device according to claim 3, wherein the fixing member has a sixth portion that is connected to the first portion and is positioned in a state of facing the side surface of the bottom portion on the fourth frame member side.   5. The solar cell device according to claim 4, wherein the fixing member has a seventh part that is connected to the sixth part and is positioned in a state of covering the upper surface of the bottom part.

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