JP2010086975A - Solar panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems that a conventional solar panel has such a defect that it is liable to be failed, or a roof is filled with heat when the solar panel is fixed to the roof, and the conventional solar panel stores more heat when it is used for an outer wall because a temperature is raised by receiving strong rays of the sun directly in midsummer. <P>SOLUTION: There are two combinations of the solar panel body and a lid-shaped body. When the temperature is high in midsummer, a rod formed of a shape memory alloy is deformed so that the power generation panel becomes substantially perpendicular to the sun in midsummer, thus enhancing power generation efficiency, and a lot of air from many holes around the power generation panel passes through the gap between the power generation panel and transparent glass thereabove to cool them and to reduce defects. When the solar panel is fixed directly to the roof, heat filling an attic is discharged from a filter in midsummer. When the solar panel is mounted on the wall surface, power generation efficiency is enhanced in midsummer and a lid-shaped body serves as eaves to prevent direct sunshine upon the wall surface, thus reducing air conditioning cost while reducing defects and also prevent heat from filling the wall surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a solar panel having particularly good power generation efficiency in midsummer, and at that time, a power generation panel, a terminal portion and the like are unlikely to become abnormally high temperatures.

In order to increase the efficiency of power generation, an invention has been made in which a reflector is attached to the outside of the power generation panel, or light can be received at an angle close to a right angle with respect to the sunlight irradiation direction by a solar tracking structure.

JP 2008-147229 A

There has also been devised to increase the power generation efficiency by changing the inclination angle of the solar cell by changing the temperature of the elastic member made of shape memory alloy.
Japanese Utility Model Publication No. 61-140551

Many of today's solar panels have transparent glass attached to the top of the power generation panel with a small gap. However, since this space is sealed, abnormally high heat is likely to accumulate in midsummer, which may reduce power generation efficiency or damage the power generation panel. Moreover, the terminal part and cords attached to the back side of the power generation panel were also adversely affected.
In order to eliminate these disadvantages, an invention has been made in which a ventilation hole is provided in a sealed space, and the ventilation hole opens and closes at a predetermined temperature to remove high heat in this space.
There is also an invention in which an endothermic tube is attached to the back side of the power generation panel to avoid an excessive temperature rise of the power generation panel.
JP 2004-60972 A

In order to increase the total amount of power generation per year, it is desirable that the power generation panel is always close to a right angle with the sun's irradiation angle that changes with seasonal changes.
However, in midsummer, the power generation panel became too hot, resulting in a decrease in power generation efficiency, and damage to the power generation panel and the terminal part attached to the back side could be adversely affected. This is due to the fact that the direct sunlight in midsummer not only overheats the power generation panel, but also the gap between the power generation panel and the transparent glass attached to the top of the power generation panel is sealed, and heat is abnormally burned there. There are many things.

In order to increase the total amount of power generation per year, power generation panels are usually installed at an angle close to the normal angle of the sun, and the shape-memory alloy rods become hot, especially in the summer when there is a lot of power generation. Deform it so that the power generation panel has an angle close to a right angle to the midsummer sun. Next, when the power generation panel is at an angle close to a right angle to the midsummer sun, the power generation panel becomes too hot in midsummer, causing a decrease in power generation efficiency and damage to the power generation panel. A large amount of air passes through the gap between the power generation panel and the transparent glass on the power generation panel through a large number of holes in the holding part to cool them. At this time, since the lid-like body is opened from the main body of the solar panel, there is no heat generated in the power generation panel and the terminal portion on the back side, so that the temperature does not rise.

A shaft having a fulcrum on the upper side at the time of attachment is attached to the frame of the lid-like body, and is attached to the solar panel body so that it can be opened and closed with the shaft as a fulcrum.
On the opposite lower side, a bar made of a shape memory alloy is attached so that the lid and the solar panel main body are closed except in midsummer.
This bar is deformed when exposed to direct sunlight in midsummer and becomes hot, so that the lid is wide open so that the power generation panel is almost perpendicular to the sun. At the same time, a large number of holes opened in the holding unit of the lid-like power generation panel are opened, and a large amount of air sucked from the lower hole passes through the gap between the power generation panel and the transparent glass. It goes out of the upper hole while cooling. In addition, since the lid-like body is opened from the solar panel body, heat does not go into this space, so the terminals on the back of the power generation panel do not overheat.
In addition, the filter above many holes opened in the holding part of the power generation panel is unnecessary except in a place where a lot of dust and dust are flying in the air.

With this configuration, the solar panel of the present invention has a relatively simple structure, and the power generation efficiency increases in midsummer, and a large amount of air passes through the gap between the power generation panel and the transparent glass from the lower hole to the upper hole. Therefore, the power generation panel is not heated too much. In addition, since the lid-like body is opened and the power generation panel is separated from the solar panel main body, heat is not generated and overheating of the power generation panel and the terminal portion can be prevented.

The angle of the heat generating panel of the solar panel body and the lid-like body is set so that the shape memory alloy rod deforms at a predetermined temperature to open and close the lid-like body, and perpendicular to the midsummer sunlight at high temperatures such as midsummer At the same time,
When the lid is opened, air is passed through the gap between the power generation panel and the transparent glass through a number of holes to cool the power generation panel, and the lid is released from the solar panel body, so the terminal part attached to the back of the power generation panel, etc. No heat is generated, and there is little failure of the heat generating panel or terminal part and the life is extended.
If you put a thermal insulator on the bottom of the solar panel body,
Since the lid is closed, it has a heat insulating effect.
If an opening is opened in the heat insulating material and a filter is attached to it, hot air in the attic will be released outside through the filter when the lid part opens in midsummer, etc. It will be cooler and the cooling effect will increase.

FIG. 1 is a front view of Embodiment 1 of the present invention.
Is a lid-like body, 8 is a rod made of shape memory alloy, and 9 is a heat insulating material.
FIG. 2 is a detailed cross-sectional view taken along the line AA of FIG. 1, wherein 1 is a solar panel body, 2 is a lid, 3 is a power generation panel, 4 is transparent glass, 5 is a hole, and holds the lid and the power generation panel. Many open in the department. There are eleven filters above the hole 5 to prevent dust and dust from accumulating on the power generation panel and reducing power generation efficiency. The bottom of the hole 5 is usually closed by the upper end of the frame of the solar panel body 6. The axis of 7 is a fulcrum of 1 solar panel body and 2 lids. 8 is a shape memory alloy rod, which is usually attached so that the solar panel body and lid are closed, and deforms at high temperatures such as midsummer to open the lid and open the power generation panel. At the same time as making the angle close to a right angle to the midsummer sun, it serves to open the 5 holes from the upper end of the frame of the solar panel body. 9 is a heat insulating material,
Located at the bottom of the solar panel body. The solar panel of the present invention can exhibit various effects when directly attached to the rafters of the roof.
It should be noted that the filter above the hole 5 is not necessary except where there is a lot of dust and dust flying in the air, and the filter without the hole improves the function of the hole 5. 8 shape memory alloy sticks can also be used in the winter when the lid 2 is closed, opened a little in spring and autumn, and the most open in midsummer. An inventive solar panel is obtained.

With this configuration, in winter and the like, air is sealed in the gap between the power generation panel and the transparent glass, and the air is sealed in the space between the power generation panel and the heat insulating material. The overall insulation effect of the panel can be greatly expected. And in midsummer daytime, the lid-like body opens widely as shown in FIG. At this time, the power generation panel is almost perpendicular to the direct sunlight and exhibits the maximum power generation efficiency, and at the same time, a large amount of air passing through many holes continues to cool both the power generation panel and the transparent glass. Prevents overheating. Since the terminal part attached to the lower side of the power generation panel is also released from the solar panel main body, it is cooled by being exposed to the outside air, so it is not easily cooled by the power generation panel from the lower side.

FIG. 4 is a diagram in which the heat insulating material of Example 1 is provided with 10 openings and 11 filters, and 1 to 8 are the same as FIG.

With this configuration, the heat insulation effect in winter and the like is slightly inferior to that of the first embodiment, but various effects such as midsummer daytime can be obtained in exactly the same manner as in the first embodiment. In addition, when the lid is open during the daytime in midsummer, hot air spilled from the opening through the filter to the attic will be released from the roof, reducing the temperature of the attic and improving the cooling effect. Easy to go up.

FIG. 5 shows a case in which a cover made of 13 heat insulating materials is pasted on the back side of the heat generating panel 3 on the 10 openings of the embodiment 2 shown in FIG. 4 with 12 adhesives. . Since it comprised in this way, the heat insulation effect of winter etc. becomes better than Example 2. FIG. 1 to 11 are the same as those in the second embodiment.

FIG. 6 is a front view of Example 4 when used for a lighting part such as a window, mainly for the case where a film is used for a power generation panel.
FIG. 7 is a detailed BB cross-sectional view of FIG.

Example 4 is for taking the light that has passed through the film of the power generation panel into the room. As shown in FIG. 7, there is a large space between the power generation panel and the inner transparent glass. However, a considerable heat insulation effect can be expected without insulation.

In addition, when installed on a wall using an ordinary power generation panel, it is considered that the power generation capacity is considerably higher than that of a solar panel that is currently directly attached to the wall. In addition, since the lid-like body acts as a trap against direct sunlight such as midsummer and the sunlight does not directly hit the wall surface, the wall surface is not overheated and the amount of heat stored is reduced.

FIG. 8 is a front view of a solar panel for a flat roof according to the fifth embodiment.
FIG. 9 is a detailed cross-sectional view taken along the CC line in FIG. As shown in the figure, there is no need for any heat insulating material for use on a flat roof, and the mounting method is almost the same as the current one, but the weight is slightly heavier. However, it is considered that the power generation efficiency is good enough to cover.

FIG. 10 is a front view of a solar panel for mounting vertically on an outer surface of an office or the like of Example 6 or an outer wall surface. 11 is a detailed cross-sectional view taken along the DD line in FIG. As shown in both figures, the shape memory alloy bar of 8 is about twice as long, and the power generation panel is usually installed vertically at about 70 degrees at high temperatures in midsummer. This is because the power generation panel is tilted by about 70 degrees so as to be an angle close to a right angle to the sunlight irradiating at a position angle.
In Example 6, since it is attached vertically, the solar panel main body and the lid-like body are inclined to prevent rain from entering.

Since it is configured in this way, it can be mounted vertically on an office or the like or an outer wall surface, and is usually mounted so that there is not much change from when a conventional solar panel is mounted. However, when the temperature is high in midsummer, the lid-like body protrudes greatly, generating a large amount of electricity from the sun rays in midsummer,
The power generation panel is cooled by a large number of holes, so it does not overheat. In addition, it feels cool because the lid and the like do not expose the office or the outer wall surface to sunlight.

When a conventional solar panel is directly attached, the solar irradiation angle is inclined at a large angle with the power generation panel even at high temperatures in the summer, and the power generation efficiency is not so good. When the transparent glass and the power generation panel are hermetically sealed, the power generation panel is overheated, which may cause a decrease in power generation capacity or a failure. Conventional solar panels absorb a large amount of heat from the midsummer sun rays, which necessitates stronger cooling in offices and the like.
In addition, a large amount of heat accumulates during the day, and if it is released in the middle of the night, it can cause a tropical night.

The shape of the shape memory alloy rod is deformed at a high temperature so that the solar panel is covered with a lid, and the lid is almost perpendicular to direct sunlight when the power generation efficiency is highest, such as midsummer daytime. To achieve that goal.
At the same time, a large amount of air passes through a large number of holes in the gap between the power generation panel and the transparent glass, and cools both to make it difficult to break down. When the lid is opened, the terminal part attached to the bottom of the power generation panel is also opened.
You will be exposed to a lot of air and will not overheat.

If it is directly attached to the rafters of the roof by using heat insulation, savings in material costs and shortening of the construction period can be obtained at the same time, and installation costs can be easily recovered. It is also possible to use daylighting by using a film for the power generation panel and attaching it to the window. It can also be used on flat roofs, which are considered to have the best power generation efficiency. In addition, when installed vertically on the outer wall, it works as a kite at high temperatures in midsummer to avoid direct sunlight and prevent the room temperature from rising. The heat does not accumulate, and it is difficult to cause a tropical night. The amount of power generation in the summer is higher than that of conventional products, and there are fewer failures.

The solar panel of the present invention can save the heating and cooling costs, increase the overall power generation efficiency, reduce the breakdown, reduce the installation period and reduce the cost, so even if the price of this solar panel as a whole is somewhat higher, You can recover the installation cost faster than it is, and it is advantageous because it lasts longer.

It is a front view of Example 1 of the present invention. (Example 1) It is an AA cross section detail drawing of Example 1 of this invention. (Example 1) It is an AA cross section detail drawing at the time of high temperature, such as midsummer daytime of Example 1 of this invention. (Example 1) It is AA cross section detail drawing of Example 2 of this invention. (Example 2) It is AA cross section detail drawing of Example 3 of this invention. Example 3 It is a front view of Example 4 of the present invention. Example 4 It is a BB cross section detail drawing of Example 4 of this invention. Example 4 It is a front view of Example 5 of the present invention. (Example 5) It is CC sectional detail drawing of Example 5 of this invention. (Example 5) It is a front view of Example 6 of the present invention. Example 6 It is DD sectional detail drawing of Example 6 of this invention. Example 6

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solar panel main body 2 Lid-like body 3 Power generation panel 4 Transparent glass 5 Hole 6 The upper end part of the frame of a solar panel main body 7 The axis | shaft used as a fulcrum of a solar panel main body and a lid-like body 8 Shape memory alloy stick | rod 9 Heat insulation 10 Opening Part 11 Filter 12 Adhesive 13 Cover for opening made of heat insulating material

Claims (2)

Separate the solar panel and lid so that the power generation panel is close to a right angle to sunlight with the lid normally closed. The power generation panel is attached to the bottom of the lid-like body, and a transparent glass is inserted into it with a small gap.
A large number of holes are made in the holding portion of the power generation panel, and at a normal temperature, the holes are closed by the upper end portion of the frame of the solar panel body so that the gap between the power generation panel and the transparent glass is sealed. The solar panel body and lid body are shape memory alloy rods attached to the lower side and / or the side of the lid body with the upper shaft at the time of attachment as a fulcrum. The lid is in the state of a lid on the solar panel body, and the lid opens at high temperatures such as midsummer, and the power generation panel becomes nearly perpendicular to the sun in midsummer. When opened, a large amount of air is sucked from the lower hole, and when passing through the gap between the power generation panel and the transparent glass, a large amount of heat is taken away and discharged from the upper hole. Solar panel characterized by Shape memory alloy rods cover the solar panel body in the winter at a right angle to the winter sun, open slightly in spring and autumn, and close to the spring and autumn sun at right angles The solar panel according to claim 1, wherein the solar panel is angled and is deformed to an angle close to a right angle to the midsummer sun in midsummer.