JP2004087884A - Support frame structure of solar cell panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support frame structure of a solar cell panel, capable of ensuring sufficient strength of the large-sized solar cell panel, without shading the sunlight. <P>SOLUTION: An outer frame 2 as a reinforcing member is fitted into a peripheral part of a solar cell panel 1, and also a stiffner 3 formed with a transparent rod-like member, such as a tempered glass or a fiber-reinforced plastic, being adhered to a surface of the solar cell panel 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a support frame structure for a solar cell panel, and is particularly useful when applied to a large-sized solar cell panel installed at a high place where a large wind pressure acts, such as a roof of a high-rise building.
[0002]
[Prior art]
A solar cell is usually formed by evaporating a semiconductor film serving as a power generation unit on a glass panel (hereinafter, this is referred to as a solar cell panel). This type of solar cell panel is reinforced by providing a support frame around the solar cell panel to secure necessary strength.
[0003]
On the other hand, this type of solar cell panel has been increasing in size in recent years, and one having a side exceeding 1 m has been manufactured. In this case, the glass panel is several mm (for example, about 4 mm).
[0004]
Solar cells are usually installed at high places, such as on the roof of a building, and the installation height varies. However, the higher the altitude, the greater the wind pressure. Therefore, a reference value of the anti-wind pressure load according to the installation height is determined, and it is necessary to provide a solar cell panel having a pressure receiving area that satisfies the reference value. For this reason, a plurality of types (sizes) of solar cell panels corresponding to the installation height position are manufactured, or a large-sized solar cell panel at the time of manufacture is divided into small parts to obtain a solar cell panel satisfying the reference value. That is being done.
[0005]
[Problems to be solved by the invention]
When a plurality of types of solar cell panels are manufactured as described above, a manufacturing line corresponding to the number is required, and there is a problem that manufacturing efficiency is reduced. Another problem is that even if a large solar cell panel is manufactured, the solar cell panel must ultimately be divided into smaller parts due to wind pressure resistance. This is because an increase in the number of work steps required for the division causes a rise in cost and the like. Therefore, if it is possible to secure a predetermined anti-wind pressure load in this state without dividing a large-sized solar cell panel, there is no other reason.
[0006]
Therefore, it is conceivable to reinforce the solar cell panel with a reinforcing material, but this must be performed from both the front and back surfaces of the solar cell panel. In the installation state of the solar cell, a positive pressure acts on the space between the back surface of the solar cell panel and the installation surface (for example, the floor surface of a building roof), so that the solar cell panel is supported at both ends. This is because a large bending moment that is convex upward acts on the portion fixed by the frame as a fulcrum. That is, reinforcement only on the back surface of the solar cell panel is not sufficient. Further, if the solar cell panel can be installed so that no space is formed between the back surface and the installation surface, the operation of negative pressure is eliminated, and the load resistance is reduced accordingly. However, it is not realistic to completely remove the space in consideration of the shape of the installation position and the necessity to secure a space for conducting electrical terminals and wiring. Therefore, it is necessary to take measures assuming that the space exists.
[0007]
On the other hand, it is conceivable to install a reinforcing member on the surface of the solar cell panel to reinforce it, but it is not preferable to install the reinforcing member in a manner that blocks sunlight. This is because the power generation efficiency decreases accordingly.
[0008]
Therefore, the appearance of a solar cell panel support frame structure capable of securing sufficient strength of a large-sized solar cell panel without blocking sunlight is expected.
[0009]
In view of the above, an object of the present invention is to provide a support frame structure for a solar cell panel capable of securing sufficient strength of a large-sized solar cell panel without blocking sunlight.
[0010]
[Problems to be solved by the invention]
The configuration of the present invention that achieves the above object has the following features.
[0011]
1) An outer frame serving as a reinforcing member is fitted around a solar cell panel formed by depositing a semiconductor film serving as a power generation unit on a glass panel serving as a substrate.
A stiffener made of a transparent rod-shaped member such as reinforced glass or reinforced plastic is bonded to at least the surface of the solar cell panel.
[0012]
2) In the support frame structure for a solar cell panel described in 1) above,
Both ends of the stiffener are configured to be fitted and fixed in grooves of the outer frame.
[0013]
3) In the support frame structure for a solar cell panel described in 2) above,
The outer frame is provided with a groove for fixing the stiffener only at a portion where both ends of the stiffener are fitted.
[0014]
4) The support frame structure for a solar cell panel according to any one of 1) to 3) above,
The back surface of the solar cell panel is configured to be reinforced by a reinforcing member integrated with the outer frame.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
<First embodiment>
1A and 1B are diagrams showing a support frame structure of a solar cell panel according to a first embodiment of the present invention, wherein FIG. 1A is a plan view thereof, and FIG. 1B is a sectional view taken along line AA. As shown in the figure, an outer frame 2 is fitted around the solar cell panel 1. The outer frame 2 has no difference from the conventional support frame. That is, in the figure, the cross section is shaped like a U-shaped member so as to sandwich the end of the solar cell panel 1, but the shape is not limited to this. What is proposed as a support frame of the solar cell panel 1 in the prior art can be used in principle.
[0017]
The stiffener 3 is a bar-shaped reinforcing member formed of a transparent member such as reinforced glass or reinforced plastic, and is adhered in a grid pattern to the surface of the solar cell panel 1. In this embodiment, six stiffeners 3 are provided in the horizontal direction and one stiffener is provided in the vertical direction. However, the number and the arrangement position are not particularly limited. What is necessary is just to determine suitably so that the wind pressure resistance according to an installation place etc. can be ensured. In the present embodiment, the back surface of the solar cell panel 1 has the same structure. That is, the stiffener 3 is also adhered to the back surface of the solar cell panel 1.
[0018]
According to this embodiment, the stiffener 3 adhered to the surface of the solar cell panel 1 effectively acts as a reinforcing member against bending stress such that the surface side of the solar cell panel 1 becomes convex, and the solar cell panel 1 1 can be improved in strength. At this time, since the stiffener 3 disposed on the surface of the solar cell panel 1 is a transparent member, sunlight can be taken into the solar cell panel 1 even through this portion. Therefore, the light receiving surface of the solar cell panel 1 is not reduced by the stiffener 3.
[0019]
<Second embodiment>
2A and 2B are diagrams showing a support frame structure of a solar cell panel according to a second embodiment of the present invention, wherein FIG. 2A is a plan view, FIG. 2B is a sectional view taken along line BB, and FIG. It is the CC sectional view taken on the line. As shown in the figure, an outer frame 12 is fitted around the solar cell panel 1. The outer frame 12 has two additional U-shaped portions above and below the U-shaped portion of the outer frame 2 of the first embodiment shown in FIG. That is, in addition to the central groove in which the end of the solar cell panel 1 is fitted, other grooves are provided above and below the central groove. The ends of the stiffener 13 are fitted into these other grooves.
[0020]
The stiffener 13 is a transparent member similar to the stiffener 3 shown in FIG. 1, but the stiffener 13 in the present embodiment is configured such that six horizontal ribs and one vertical rib are integrally formed. The end of each rib is fitted into the groove of the outer frame 12 so as to abut on the surface of the solar cell panel 1 and is fixed to the outer frame 12. That is, in the present embodiment, the stiffener 13 only comes into contact with the surface of the solar cell panel 1 and is not bonded, but the strength is further improved by forming the stiffener 13 and the outer frame 12 into an integral structure. Things. In the present embodiment, the back surface of the solar cell panel 1 has the same structure. That is, the stiffener 13 is also provided on the back surface of the solar cell panel 1.
[0021]
According to this embodiment, similarly to the first embodiment, a large proof stress against bending stress acting on the solar cell panel 1 can be provided. At this time, since the stiffener 13 has an integral structure with the outer frame 12, the stiffener 13 can more effectively counter the bending stress than in the first embodiment.
[0022]
<Third embodiment>
3A and 3B are diagrams showing a support frame structure of a solar cell panel according to a third embodiment of the present invention, wherein FIG. 3A is a plan view thereof, FIG. 3B is a sectional view taken along line DD, and FIG. It is the EE sectional view taken on the line. As shown in the drawing, the basic structure of the present embodiment is the same as that of the second embodiment shown in FIG. 2, except that the groove of the outer frame 22 into which both ends of the stiffener 13 are fitted is formed. The difference is that the stiffener 13 is provided in a minimum necessary range in accordance with the position of each rib. That is, the stiffener support portions 22 a are intermittently provided on each side of the outer frame 22. In the present embodiment, the back surface of the solar cell panel 1 has the same structure. That is, the stiffener 13 is also provided on the back surface of the solar cell panel 1.
[0023]
According to this embodiment, similarly to the first embodiment, a large proof stress against bending stress acting on the solar cell panel 1 can be provided. At this time, since the stiffener 13 has an integral structure with the outer frame 12, the stiffener 13 can more effectively counter the bending stress than in the first embodiment.
[0024]
In the first to third embodiments, the rear surface side of the solar cell panel 1 has the same configuration as the front surface side, but it is not necessarily required to be configured in this manner. Since there is no need to worry about blocking the sunlight incident on the solar cell panel 1 on the back surface side, there is no inconvenience in using any reinforcing structure. Therefore, for example, the reinforcing structure on the back surface of the solar cell panel 1 and the outer frames 2, 12, 22 may be configured as an integral unit. In this case, assembly and portability are excellent.
[0025]
【The invention's effect】
As described in detail with the above embodiments, the invention described in [Claim 1] is to reinforce a peripheral portion of a solar cell panel formed by depositing a semiconductor film as a power generation part on a glass panel as a substrate. Since the outer frame which is a member is fitted, at least the surface of the solar cell panel is formed by bonding a stiffener formed of a transparent rod-shaped member such as reinforced glass or reinforced plastic.
The stiffener effectively acts as a reinforcing member against bending stress such that the surface side of the solar cell panel becomes convex, and the strength of the solar cell panel can be improved. At this time, since the stiffener disposed on the surface of the solar cell panel is a transparent member, sunlight can be taken into the solar cell panel 1 even through this portion. Therefore, the light receiving surface of the solar cell panel 1 is not reduced by the stiffener 3.
As a result, it is possible to improve the proof stress against the wind pressure load without lowering the power generation efficiency, and even if the solar cell panel has a large area, it can be installed at a predetermined height in the same size without being divided. it can.
[0026]
According to the invention described in [Claim 2], in the solar cell panel support frame structure described in [Claim 1], both ends of the stiffener are configured to be fitted and fixed in the grooves of the outer frame. ,
In addition to providing the same operation and effect as the invention described in [Claim 1], the stiffener and the outer frame can be formed as an integral structure, and the resistance to wind pressure load is improved by that amount. Further, it is possible to flexibly cope with a change in the stiffener and the outer frame structure, and at the same time, it is possible to improve the assembling workability.
[0027]
According to a third aspect of the present invention, in the solar cell panel support frame structure according to the second aspect, the outer frame has the stiffener fixed to only the portions where both ends of the stiffener are fitted. Since the groove of was formed,
In addition to providing the same operation and effect as the invention described in [Claim 2], the stiffener can be fixed by the minimum necessary portion of the outer frame, and the outer frame structure can be rationalized and reduced in weight. Can be achieved.
[0028]
According to a fourth aspect of the present invention, in the solar cell panel support frame structure according to any one of the first to third aspects, the back surface of the solar cell panel is integrated with the outer frame. Because it was configured to reinforce with the reinforcing member that became
It is possible to satisfactorily improve the proof stress against wind pressure loads acting on the front and back surfaces of the solar cell panel, and to make the effects and effects of the inventions described in [1] to [3] most remarkable. it can.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams according to a first embodiment of the present invention, in which FIG. 1A is a plan view thereof, and FIG.
FIGS. 2A and 2B are diagrams according to a second embodiment of the present invention, wherein FIG. 2A is a plan view, FIG. 2B is a cross-sectional view taken along line BB, and FIG. 2C is a cross-sectional view taken along line CC. is there.
3A and 3B are diagrams according to a third embodiment of the present invention, wherein FIG. 3A is a plan view, FIG. 3B is a cross-sectional view taken along line DD, and FIG. 3C is a cross-sectional view taken along line EE. is there.
[Explanation of symbols]
1 solar cell panels 2, 12, 22 outer frame 3, 13 stiffener

Claims (4)

Along with fitting an outer frame as a reinforcing member around a solar cell panel formed by evaporating a semiconductor film as a power generation unit on a glass panel as a substrate,
A support structure for a solar cell panel, wherein a stiffener formed of a transparent rod-shaped member such as reinforced glass or reinforced plastic is bonded to at least a surface of the solar cell panel. In the solar cell panel support frame structure according to [claim 1],
A support frame structure for a solar cell panel, wherein both ends of a stiffener are fitted and fixed in grooves of an outer frame. In the support frame structure for a solar cell panel according to claim 2,
A supporting frame structure for a solar cell panel, characterized in that a groove for fixing the stiffener is formed only in a portion where both ends of the stiffener are fitted in the outer frame. In the solar cell panel support frame structure according to any one of claims 1 to 3,
A support frame structure for a solar cell panel, wherein a back surface of the solar cell panel is reinforced by a reinforcing member integrated with an outer frame.

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