JP2013120844A - Frame body and solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame body and a solar cell module which withstand large forces from a vertical direction on a cross section of the frame body and the diagonal upper side and also withstand forces from various directions.SOLUTION: A frame body 2 of the solar cell module 30 has a fitting part 3 allowing a peripheral edge part of a solar cell module body 1 to fit thereinto and a support part 4. A cross section shape of the support part 4, arranged perpendicular to the longitudinal direction, is formed into a square shape, and the support part 4 is composed of an outer wall 4b, an inner wall 4c, a holding lower piece 3b, and a bottom side piece 4a. The frame body 2 further has a reinforcement piece 5 in the support part 4, and the reinforcement piece 5 is disposed between the holding lower piece 3b and the bottom side piece 4a.

Description

  The present invention relates to a frame that covers the peripheral edge of a solar cell module body and a solar cell module.

  Since the solar cell module has a function of converting sunlight into electric power, it is generally installed outdoors. Moreover, since a solar cell module withstands the load of wind pressure and snow accumulation, the periphery of the solar cell module body is often covered with a frame. The frame has a structure having a hollow support portion in order to increase strength against load.

  A solar cell module 71 of a first conventional example is shown in FIGS. 6 and 7 (see Patent Document 1). FIG. 6 is a cross-sectional view of the frame 56 of the solar cell module 71. The solar cell module 71 holds the periphery of the solar cell module main body 50 with a frame body 56. The solar cell module main body 50 is a rectangular solar cell panel that receives sunlight L and converts it into electric power, and the frame 56 has a fitting portion 52, a hollow support portion 57, and an overhang portion 58. The fitting portion 52 is formed in a substantially U-shaped cross section by a holding upper piece 52a, a holding lower piece 52b, and an intermediate piece 52c connecting them. The support portion 57 is a cross section perpendicular to the longitudinal direction (direction perpendicular to the paper surface) of the upper side portion 57a, the vertical side portion 57b serving as the side of the solar cell module 71, and the oblique side portion 57c inside the solar cell module 71. The shape forms an inverted triangle. In this case, the holding lower piece 52b of the fitting portion 52 also serves as the upper side portion 57a. The projecting portion 58 has an L-shaped cross section, and the tip of one piece is connected to the connecting portion of the vertical side portion 57 b and the oblique side portion 57 c of the support portion 57, and the other piece extends to the center side of the frame body 56. The solar cell module 71 is assembled by fitting the fitting portion 52 of the frame body 56 into the peripheral portion of the solar cell module main body 50.

  By the way, the force (load) applied to the frame body 56 is mainly the force applied in the direction in which the frame body 56 is compressed by the weight of the solar cell module body 50 and the snow accumulation and wind pressure on the solar cell module body 50. There is a force applied to the module body 50 in the direction of pulling the frame 56 by the wind pressure blown from below. In the case of a force applied in a direction perpendicular to the cross section of the frame 56, that is, in a direction along the vertical side portion 57b, the force applied to the holding lower piece 52b by the weight of the solar cell module body 50 is the oblique side portion 57c and the vertical side portion 57b. As a compressive force, the solar cell module main body 50 can be supported without generating a shearing force or a bending moment in the oblique side portion 57c and the vertical side portion 57b. When a blowing load is applied in the opposite direction, a tensile force is applied to the oblique side portion 57c and the vertical side portion 57b, and the solar cell module body 50 can be supported.

  FIG. 7 is a perspective view of the installed state of the solar cell module 71. A plurality of solar cell modules 71 are installed on an inclined pedestal 59 via a frame 56. Each solar cell module 71 in the installed state is inclined by the pedestal 59, so that the weight (snow) (not shown) of the solar cell module body 50 and the force (load) F5 applied to the frame body 56 by wind pressure are as shown in FIG. As shown by the arrow, the cross-section of the frame body 56 is a force from obliquely above, that is, a force for removing the frame body 56 from the solar cell module body 50 by the solar cell module body 50. In this case, as shown in FIG. 7, the direction in which the force F5 is applied may be a direction along the slope of the oblique side portion 57c. Therefore, it does not always take from the same direction, it takes different sizes from different directions. Therefore, a force from obliquely above other than the direction of the force F5 cannot be released in the direction along the oblique side portion 57c of the cross section of the frame 56, and is weaker than the strength in the direction of the force F5.

  A solar cell module 70 of a second conventional example is shown in FIGS. FIG. 8 is a cross-sectional view of the frame 51 of the solar cell module 70. The difference from the first conventional example is that the support portion 53 is formed in a square cross section and there is no overhanging portion. In other words, the support portion 53 is formed in a quadrangular cross section by an outer wall 53a that is a side of the solar cell module 70, an inner wall 53b that faces the inner side, a bottom piece 53c, and a holding lower piece 52b of the fitting portion 52. The inside is a hollow space.

  FIG. 9 is a schematic partial side view of the roof 54 in a state where the solar cell module 70 is installed on the roof 54 of the building, and shows a state in which the snow cover 55 is formed on the solar cell module 70. F shows the force from the diagonally upper direction added to the frame 51 by the weight of the solar cell module main body 50, the snow cover 55, etc. FIG.

  10 is a cross-sectional view showing directions of various forces applied to the frame 51 in FIG. F1 indicates the force applied in the direction along the outer wall 53a of the frame body 51, that is, the vertical direction due to the weight of the solar cell module body 50, snow accumulation 55, etc., and F2 and F3 correspond to the force F described above. The force applied from various oblique directions is shown by the angle, wind pressure, snow cover 55, etc., and F4 indicates the blowing load due to the wind pressure. That is, the optimum installation angle of the solar cell module 70 differs depending on the installation location. However, if the installation angle is different, the direction and angle of the force applied to the frame 51 change as shown by forces F2 and F3 in FIG. It also changes depending on the condition of snow cover 55. Further, in the case of wind, force is applied to the frame 51 from various directions (angles), and the forces F2 and F3 applied from the light incident side of the solar cell module 70 and the force caused by the wind that wraps under the solar cell module 70 (Blow-up load) F4 is also received.

According to the frame 51 of the second conventional example, since the support portion 53 has a quadrangular cross section, the vertical force F1 applied to the frame 51 by the solar cell module body 50 can be withstood by the outer wall 53a and the inner wall 53b. The holding lower piece 52b and the inner wall 53b can withstand the force F applied to the frame 51 from obliquely above, and can withstand forces from various directions such as withstanding the blowing load F4.
JP 2009-267130 A

  With the increase in size of the solar cell module 70, the weight of the solar cell module body 50 is increased and the amount of snow and the wind pressure are increased as compared with the conventional case. Therefore, the force applied to the frames 51 and 56 is significantly increased. The force applied in the longitudinal direction of the cross sections 51 and 56 and the force applied obliquely from above are increased. When the solar cell module 70 is installed in a snowy area, the amount of snow accumulation increases. Therefore, the force applied to the frame bodies 51 and 56 is further increased, and it is necessary to prevent the frame bodies 51 and 56 from bending.

  As described above, the frame bodies 51 and 56 are required to have a performance that can withstand a greater force in the vertical direction, and further to have a capability to withstand a force from various oblique directions and a force from other directions. .

  However, the frame 56 of the first conventional example cannot sufficiently withstand the forces from various directions obliquely upward as described above. Further, the frame bodies 51 and 56 of the first conventional example and the second conventional example cannot sufficiently withstand a greater force from the vertical direction and obliquely upward.

  Therefore, the present invention can sufficiently withstand a large force in the vertical direction, can withstand a large force from various directions obliquely above, and can withstand a force from other directions. And it aims at providing a solar cell module.

  The frame of the present invention is a frame having a fitting portion that fits to a peripheral portion of a solar cell module body and a support portion that supports the fitting portion, and the support portion corresponds to an upper side of a quadrangle. The holding piece, the outer wall and the inner wall corresponding to both sides of the quadrangle, and the bottom piece corresponding to the lower side of the quadrangle are formed in a quadrangular cross-sectional shape in the longitudinal direction. The solar cell module main body fitted to the base is supported, and the support part has a structure having a reinforcing piece between the holding piece and the bottom piece. . Moreover, it is preferable that the support part is formed in a rectangular cross-sectional shape perpendicular to the longitudinal direction.

  According to the above configuration, since the reinforcing piece is interposed between the holding piece and the bottom piece in the support portion, the reinforcing piece can support the force applied to the holding piece, and therefore in the longitudinal direction in the cross section of the frame body. Since a large force applied to the frame can be received by the outer wall, the inner wall and the reinforcing piece, the frame body has sufficient strength and can withstand the large force. Also, in the cross section of the frame body, various forces from diagonally above can be broken down into holding pieces and inner walls and further broken down into reinforcing pieces, so the frame body has the strength to withstand large forces from diagonally above. It can be strong enough to withstand forces from various other directions.

  In the frame of the present invention, the reinforcing piece is provided in parallel to the outer wall in the above configuration. This configuration is particularly effective for withstanding a large force in the vertical direction.

  The frame of the present invention is provided with the reinforcing piece inclined with respect to the outer wall in the above configuration. According to this structure, it is effective to endure the force from diagonally upward along the inclination direction of a reinforcement piece.

  The frame of the present invention may have a plurality of reinforcing pieces in the above configuration. According to this configuration, the force withstanding the force from the vertical direction and the force from obliquely above is further increased.

  The frame of the present invention has a pair of reinforcing pieces and is arranged so as to cross each other in the above configuration. That is, the pair of reinforcing pieces are provided to be inclined with respect to the outer wall. According to this configuration, the durability is particularly large with respect to forces from two oblique directions.

  The solar cell module of the present invention includes a solar cell module main body that receives sunlight and converts it into electric power, and a frame having the above-described configuration that fits the peripheral edge of the solar cell module main body. According to this solar cell module, since the frame body having the above-described configuration is provided, the same effect as described above can be obtained.

  According to the frame of the present invention, since the reinforcing piece is interposed between the holding piece and the bottom piece in the support portion, the reinforcing piece can support the force applied to the holding piece, and thus the cross section of the frame. Since a large force applied in the vertical direction can be received by the outer wall, the inner wall and the reinforcing piece, the frame body has sufficient strength and can withstand the large force. In the cross section of the frame, various forces from obliquely above are decomposed into holding pieces and inner walls, and further decomposed into reinforcing pieces, so that the frame is strong enough to withstand large forces from obliquely above. It can be strong enough to withstand forces from various other directions.

  Moreover, according to the solar cell module of this invention, since it has the said frame, there exists an effect similar to the above.

It is a top view of the solar cell module which concerns on the 1st Embodiment of this invention. It is the II sectional view taken on the line of FIG. 1 which shows the cross section of the frame of a solar cell module. It is sectional drawing of the frame of the solar cell module which concerns on the 2nd Embodiment of this invention. It is a schematic sectional drawing of the frame of the solar cell module which concerns on another various embodiment of this invention. It is sectional drawing of the frame of the solar cell module which concerns on another embodiment of this invention. It is sectional drawing of the frame which shows a 1st prior art example. It is a perspective view of the state in which the solar cell module was installed in the mount frame. It is sectional drawing of the frame which shows a 2nd prior art example. It is a side view which shows a part of roof of the state which installed the solar cell module in the roof. It is sectional drawing of the frame which shows the direction of the force added to a frame.

  A solar cell module according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of the solar cell module according to the first embodiment. The solar cell module 30 includes a solar cell module main body 1 and a frame 2 that covers the peripheral edge thereof. The solar cell module main body 1 receives sunlight and converts it into electric power. The frame body 2 is composed of four frame pieces 2a to 2d fitted to the peripheral edge portion of the solar cell module main body 1, and another frame portion 2a is connected between the connecting portions 2e provided at both ends of the pair of frame pieces 2a and 2c. Both ends of the pair of frame pieces 2b and 2d are arranged, and the frame pieces 2b and 2d are connected between the frame pieces 2a and 2c with a connecting tool (connecting means) such as a screw, whereby the peripheral portion of the solar cell module body 1 Is fitted and covered.

  FIG. 2 is a cross-sectional view taken along the line II of FIG. 1 and shows a cross section of the frame body 2 in a state where the solar cell module body 1 is fitted. However, although the cross section of one frame piece 2a is shown in FIG. 2, the other frame pieces 2b to 2c have the same cross sectional shape.

  The internal structure of the solar cell module body 1 is made of a translucent substrate using glass or the like, a filler using EVA (ethylene vinyl acetate) or the like, a solar cell that receives sunlight and converting it into electric power, a filler, or a resin. It has a laminated structure (not shown) of a back surface protection material using a film or the like, the solar cell is sealed with a filler and fixed to the light transmissive substrate, and the back surface protection material is opposite to the light transmissive substrate. It is manufactured by protecting with. A terminal is provided on the back surface protective material.

  The frame body 2 (frame pieces 2a to 2d) includes a fitting portion 3 that fits the peripheral edge portion of the solar cell module main body 1, and a hollow support portion 4 that supports the fitting portion 3. The frame pieces 2a to 2d are formed simultaneously with extrusion molding using a metal such as aluminum or a resin. The fitting portion 3 includes a holding upper piece 3 a that covers the upper surface of the solar cell module body 1, a holding lower piece 3 b that supports the lower surface of the solar cell module body 1, and an intermediate piece 3 c that supports the end face of the solar cell module body 1. It is formed in a U shape.

  The support portion 4 has a quadrangular cross-sectional shape in the longitudinal direction Y (rectangular shape in the embodiment), a holding lower piece 3b as a holding piece corresponding to the upper side of the quadrangle, and both sides of the quadrangle. It consists of an outer wall 4b and an inner wall 4c, and a bottom piece 4a corresponding to the lower side of a quadrangle. The holding lower piece 3b directly receives and supports the solar cell module body 1 fitted in the fitting portion 3 as described above. The outer wall 4b is a side of the solar cell module 30. The fitting part 3 and the support part 4 are located on the opposite sides of the holding lower piece 3b. The intermediate piece 3c and the outer wall 4b are flush with each other. The bottom piece 4a is used for installation on an installation part such as a roof, and is attached to a frame (not shown) of the installation part directly or via a support plate. Further, a reinforcing piece 5 capable of supporting a vertical force is disposed in the support portion 4. That is, the reinforcing piece 5 is interposed between the holding lower piece 3 b and the bottom piece 4 a in the hollow space of the support portion 4. This reinforcing piece 5 is positioned in the center of each of the holding lower piece 3b and the bottom piece 4a and parallel to the outer wall 4b, and both sides are integrally connected to the holding lower piece 3b and the bottom piece 4a. Further, since the reinforcing side 5 is formed by extruding the frame pieces 2a to 2d, the reinforcing piece 5 is formed over the entire length from end to end in the longitudinal direction Y of each frame piece 2a to 2d.

  The solar cell module 30 is assembled by fitting the fitting portions 3 of the frame pieces 2a to 2d to the peripheral portion of the solar cell module body 1 and simultaneously connecting the frame pieces 2a to 2d with the connecting portion 2e. And the solar cell module 30 is installed in an installation part by fixing the base piece 4a to installation parts, such as a roof.

  According to the solar cell module 30 of the first embodiment, in the frame body 2, the reinforcing piece 5 is interposed between the holding lower piece 3 b and the bottom piece 4 a in the support portion 4 that supports the fitting portion 3. Therefore, the reinforcing piece 5 can support the force applied to the holding lower piece 3b, and accordingly, a large force applied in the vertical direction in the cross section of the frame body 2 can be received by the outer wall 4b, the inner wall 4c and the reinforcing piece 5. Therefore, the frame body 2 has sufficient strength and can withstand a large force. Further, in the cross section of the frame 2, various forces from obliquely upward can be decomposed into the holding lower piece 3 b and the inner wall 4 c and further decomposed into the reinforcing piece 5. In addition, it is possible to have strength that can sufficiently withstand forces from various directions such as blowing loads.

  Further, since the reinforcing piece 5 is parallel to the outer wall 4b, it is particularly effective for withstanding a large force in the vertical direction.

  Here, as a comparative example, for example, both sides of the reinforcing piece are interposed between the outer wall 4b and the inner wall 4c and provided in parallel with the holding lower piece 3b, for example, the force applied to the holding lower piece 3b in the vertical direction Since it cannot be supported and is received only by the outer wall 4b and the inner wall 4c, the first embodiment can withstand a greater force.

  The positions of the reinforcing piece 5 on the holding lower piece 3b and the bottom piece 4a are not limited to the center, but may be located closer to the inner wall 4c or closer to the outer wall 4b. Moreover, the outer wall 4b etc. which form the hollow space of the support part 4, and the reinforcement piece 5 do not need to be the same thickness.

  FIG. 3 shows a cross-sectional view of the frame 2 of the solar cell module 30 according to the second embodiment of the present invention. The solar cell module 30 includes a solar cell module main body 1 and a frame body 2, and the frame body 2 has a fitting portion 3 and a support portion 4. Among these, the solar cell module main body 1 and a part of the frame 2 have the same configuration as in the first embodiment, and the same portions are denoted by the same reference numerals and description thereof is omitted. The difference is that the reinforcing piece 5a is not parallel to the outer wall 4b and is inclined with respect to the outer wall 4b. That is, the upper portion of the reinforcing piece 5a is integrally connected to the corner portion where the holding lower piece 3b and the inner wall 4c are connected, and the lower portion is integrally connected to the corner portion where the outer wall 4b and the bottom piece 4a are connected.

  According to the second embodiment, since the reinforcing piece 5a can support the force applied in the vertical direction, it is possible to withstand a large force related to the vertical direction of the frame 2. In addition, when a force F5 from above obliquely to remove the frame body 2 from the solar cell module body 1 is applied to the solar cell module body 1, it can be supported by the reinforcing piece 5a, so that the frame body 2 is rotated. It becomes difficult to apply the force which does, and it becomes difficult to remove | deviate from the solar cell module main body 1 further.

  FIG. 4 is a schematic cross-sectional view of the frame 2 of the solar cell module 30 in various other embodiments according to the present invention. The solar cell module main body 1 and a part of the frame body 2 of the solar cell module 30 have the same configurations as those of the first embodiment and the second embodiment. Omitted. The difference is that there are a plurality of reinforcing pieces as shown below.

  In FIG. 4A, two reinforcing pieces 5b and 5c are interposed between the holding lower piece 3b and the bottom piece 4a, respectively, parallel to the outer wall 4b, and each of the holding lower piece 3b and the bottom piece 4a is 3 respectively. It is provided at an equally dividing position. According to this embodiment, the frame 2 can have further strength against the force in the vertical direction.

  In FIG. 4B, in addition to the vertical reinforcing piece 5 of the first embodiment, a horizontal reinforcing piece 5d is provided. The reinforcing piece 5d is interposed between the inner wall 4c and the outer wall 4b. Specifically, the reinforcing piece 5d is parallel to the holding lower piece 3b, and both sides are integrally connected at the center position of the inner wall 4c and the outer wall 4b. The pieces 5 and 5d cross each other at the central position. The reinforcing piece 5d can withstand a force parallel to the holding lower piece 3b.

  In FIG. 4C, in addition to the reinforcing piece 5a of the second embodiment, an oblique reinforcing piece 5e in the opposite direction intersecting with the reinforcing piece 5a is added. That is, the pair of reinforcing pieces 5a and 5e are arranged so as to cross each other. This reinforcing piece 5e can greatly contribute to withstanding a force to remove the frame body 2 from obliquely below, that is, when a blowing load is applied.

  FIG. 4D shows the embodiment of FIG. 4C in which a reinforcing piece 5 parallel to the outer wall 4b is added as in the first embodiment, and intersects with the reinforcing pieces 5a and 5e integrally. doing. By the addition of the reinforcing piece 5, the frame body 2 can more stably withstand forces applied from various directions.

  FIG. 4 (E) is the same as the embodiment of FIG. 4 (D) except that a reinforcing piece 5d parallel to the reinforcing piece 5d, ie, the holding lower piece 3b of FIG. Crosses 5e together. Similar to the embodiment of FIG. 4D, the frame body 2 can more stably withstand forces applied from various directions.

  FIG. 5 shows a cross-sectional view of the frame body 2 of the solar cell module 30 according to still another embodiment of the present invention. The solar cell module main body 1 and the frame body 2 of the solar cell module 30 have the same configuration as in the first embodiment, and the same portions are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, a support portion 6 is provided on the frame 2 in the first embodiment. The support portion 6 extends from the bottom piece 4 a of the support portion 4 in parallel to the bottom piece 4 a inward from the inner wall 4 c, that is, to the center side of the frame 2. By providing the support portion 6, the frame body 2 of the solar cell module 30 can be more stably installed on the installation portion.

  The support portion 6 is not limited to the first embodiment, and can be applied to other embodiments.

  Moreover, in each said embodiment, the frame 2 has shown only the basic structure which concerns on this invention, Of course, it may have the said support part 6, Adjacent to the several solar cell module 30 mutually. A structure for connecting the solar cell module 30 may be added. In addition to the screw holes used for connecting the connecting portions 2e of the frame pieces 2a to 2d to the supporting portion 4, the reinforcing piece 5 or the supporting portion 6 of the frame body 2, a protruding portion, a groove portion, or the like may be provided. The support part 4 of the frame 2 is not limited to being provided on all of the frame pieces 2a to 2d, but may be provided only on a part thereof.

  The solar battery cell in the solar battery module main body 1 is not limited to a specific solar battery. For example, compound semiconductor solar cells such as GaAs, CIS, CIGS, and CdTe, crystalline and thin film silicon solar cells, and dye-sensitized solar cells may be used.

  It should be noted that the embodiment disclosed herein is illustrative in all respects and does not serve as a basis for limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiment, but is defined based on the description of the scope of claims. Moreover, all the changes within the meaning and range equivalent to a claim are included.

DESCRIPTION OF SYMBOLS 1 Solar cell module main body 2 Frame 2a-2d Frame piece 3 Fitting part 3a Holding upper piece 3b Holding lower piece (holding piece)
3c Intermediate piece 4 Support part 4a Bottom piece 4b Outer wall 4c Inner wall 5 Reinforcement piece 5a-5e Reinforcement piece 6 Support part

Claims (7)

A frame having a fitting part that fits to the peripheral part of the solar cell module body and a support part that supports the fitting part,
The support portion is formed in a quadrangular cross-sectional shape perpendicular to the longitudinal direction by a holding piece corresponding to the upper side of the quadrangle, an outer wall and an inner wall corresponding to both sides of the quadrangle, and a bottom piece corresponding to the lower side of the quadrangle. The holding piece supports the solar cell module body fitted in the fitting portion, and the support portion has a reinforcing piece between the holding piece and the bottom piece. A frame characterized by being made.   The frame according to claim 1, wherein the support portion has a rectangular cross-sectional shape perpendicular to the longitudinal direction. A frame according to claim 1 or claim 2, wherein
The frame is characterized in that the reinforcing piece is provided in parallel to the outer wall. A frame according to claim 1 or claim 2, wherein
The frame, wherein the reinforcing piece is provided to be inclined with respect to the outer wall. A frame according to any one of claims 1 to 3,
A frame having a plurality of reinforcing pieces. The frame according to claim 4,
A pair of the reinforcing pieces are provided and arranged so as to cross each other.   The solar cell module main body which receives sunlight and converts it into electric power, and the frame according to any one of claims 1 to 6, which is fitted to a peripheral portion of the solar cell module main body. A solar cell module characterized by.

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