JPH08148710A - Method for engaging metal frame with outer edge of solar module panel - Google Patents

Abstract

PURPOSE: To rapidly and easily perform work with small labor force, secure airtightness for salt, etc., and improving appearance finish in a method for engaging a metal frame with the outer edge part of a solar cell module panel when manufacturing a power supply using a solar cell. CONSTITUTION: A gasket 4 is engaged to a recessed groove 2a for engagement of a metal frame 2 while the gasket 4 is pulled out and a groove 6 for engagement formed by a butyl rubber 5 for applying and drying and an upper surface part 4e of the gasket 4 at an extended upper edge part 2g of the metal frame 2 and the gasket 4 is engaged with an outer edge part 1a of a solar cell module panel 1. In this case, butyl rubber 5 which became soft heating the metal frame 2 in advance enters a space among an upper transparent member lb or a lower protection sheet 1c of the solar cell module panel 1, an extended upper-edge part 2g, and a support upper surface part 4e by the press contact of an outer edge part 1a. By naturally cooling it for curing, the outside edge part 1a is airtightly closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a power supply device using a solar cell. The solar cell module panel has a metal frame at its outer end so that rainwater and salt do not enter from the outer end. The present invention relates to a method for air-tightly fitting the fitting concave groove.

[0002]

2. Description of the Related Art As is known, when manufacturing a power supply device using a solar cell, if a solar cell module panel 1 is manufactured as shown in FIG.
, A fitting groove 2a of a metal frame 2 made of aluminum or the like is fitted through a sealing material 3 made of silicon resin, butyl rubber, or the like. I'm trying to prevent intrusion into 1.

Here, the solar cell module panel 1 is, as is known, a plate-shaped upper transparent member 1b made of glass or the like, an aluminum chute, or a lower protective sheet made of a laminate in which an aluminum sheet is sandwiched between resin sheets. 1c (Tedlar), in which a required number of solar cell elements 1e are embedded in a state where they are appropriately connected by an interconnector 1f through a filler 1d made of ethylene vinyl acetate (EVA) or the like. Is.

The solar cell module panel 1 as described above
As means for fitting the fitting concave groove 2a of the metal frame 2 in the airtight manner as described above, there has been heretofore been shown in FIG.
The outer end 1 of the solar cell module panel 1 as shown in FIG.
After the seal material 3 is applied and dried on a, it is fitted into the fitting groove 2a of the metal frame 2, or conversely, as shown in FIG. 3B, the sealing material 3 is first inserted into the fitting groove 2a. Is injected and dried, and the outer end portion 1a of the solar cell module panel 1 is fitted into the sealing material 3.

[0005]

According to the above-described conventional fitting method, since a hermetically sealed and watertight state should be maintained at the completion of the fitting, a large force is required for fitting. As a result, not only is work efficiency inferior, the appearance of the finished state is poor, and it is not possible to completely prevent the ingress of moisture and salt, and it also has poor durability in terms of airtightness and watertightness. There is a defect.

In view of the drawbacks of the above-mentioned conventional fitting method, the present invention uses a gasket capable of engaging a member corresponding to the above-mentioned sealing material with a metal frame in a retaining state, and a butyl rubber arranged at a proper position. And softened the butyl rubber by heating the metal frame,
By fitting a metal frame to the outer end of the solar cell module panel, the softened butyl rubber is allowed to penetrate into the required gap and then cured.

According to the present invention, as described above, with respect to the sealing material, it is possible to improve the work efficiency and adjust the butyl rubber to an appropriate amount by eliminating the work of fitting with a large force for a long time. The butyl rubber does not cause a seal failure due to excess or deficiency, and the appearance does not deteriorate due to protrusion, and the infiltration of butyl rubber ensures complete air-tightness and water-tightness over a long period of time, quickly and easily without any effort. Trying to.

[0008]

In order to achieve the above object, the present invention provides a gasket formed so as to be fitted in a retaining state in a fitting groove formed with a retaining portion of a metal frame. , Butyl rubber is applied to the upper inner surface of the gasket and dried, and the gasket with the butyl rubber is fitted into the fitting groove of the metal frame to engage the locked portion of the gasket with the retaining portion, As a result, the receiving upper surface portion of the gasket and the upper edge portion of the butyl rubber and the metal frame extending inward from the upper side thereof form a fitting groove that opens inward, and heat the metal frame. The butyl rubber is softened by doing so, and in this softened state, between the upper transparent member and the lower protective sheet, a solar cell in which a solar cell element is embedded and connected via a filler. Per Joule panel, the said fitting wearing grooves in a metal frame fitted in the outer end portion, thereby causing the pushing of the outer end portion in the butyl rubber,
The butyl rubber is infiltrated between the upper transparent member and the extended upper edge portion of the metal frame and between the lower protective sheet and the receiving upper surface portion of the gasket to cure the butyl rubber. It is an object of the present invention to provide a method of fitting a metal frame to an outer end of a battery module panel.

[0009]

According to the present invention, by fitting a gasket prepared in advance into the fitting groove of the metal frame, the retaining portion of the fitting groove of the gasket is engaged with the retaining portion of the fitting groove. As a result, the metal frame is stably fixed in the retaining state. At this time, since butyl rubber is applied and dried and solidified on the inner surface of the upper surface of the gasket, this allows the upper surface of the gasket to receive the butyl rubber and the metal extending from the upper surface to the inner surface. The extending upper edge portion of the frame forms an inwardly fitting fitting groove.

Next, when the metal frame fitted with the gasket is heated by an appropriate means, the butyl rubber of the gasket is softened at a required temperature. In the softened state, the known solar cell is known. If the fitting groove of the metal frame is fitted to the outer end of the module panel,
The outer end of the solar cell module panel is pressed against the butyl rubber, and the butyl rubber softened by this is pressed to extend between the upper transparent member and the extended upper edge of the metal frame, and the lower part. The butyl rubber will infiltrate into the space between the protective sheet and the upper surface of the gasket, and the gap will be filled with the butyl rubber.At this time, the distribution amount of butyl rubber to the gasket should be properly selected. The butyl rubber against the above void,
It is possible to perform the necessary and sufficient infiltration filling.

When the butyl rubber is completely infiltrated as described above, the heating of the metal frame is stopped and the butyl rubber is left at the room temperature or hardened by forced cooling or the like. The end surface and the upper and lower surfaces, which are the parts, are covered with hardened butyl rubber. Therefore, a good fit state between the solar cell module panel and the metal frame can be secured without any effort by the work of fitting by a worker. You will be able to do it.

[0012]

EXAMPLE FIG. 1A shows a fitting method according to the present invention.
In the following description with reference to (B), the same constituent members as the members described in the conventional example will be designated by the same reference numerals. First, in the metal frame 2,
In the fitting groove 2a that is located above it and is open to the inside, in the case of the illustrated example, the retaining portion 2c projects upward from the bottom portion 2b. The retaining portion 2c is provided with an inclined taper protrusion 2e which is arranged so as to be closer to the outer standing portion 2d side of the metal frame 2 and an inwardly protruding angular protrusion 2f which is on the opposite side. And 2g in the figure show an upper edge portion extending inwardly from the upper end of the outer upright portion 2d in an orthogonal manner.

In the present invention, the gasket 4 made of electric resistant EPDM rubber or the like is formed in advance, but it has a shape that can be fitted into the fitting groove 2a of the metal frame 2 in a retaining state. Therefore, in the illustrated example, the upright side portion 4b is erected from one end of the base portion 4a so as to have an L-shaped end face shape, and the base portion 4a has the same shape as the metal frame 2 described above. The locked portion 4c into which the protruding retaining portion 2c is engaged is recessed.

In the state where the gasket 4 is fitted in the fitting groove 2a as described above, the outer side surfaces of the base portion 4a and the upright side portions 4b are the outer upright portions 2 of the metal frame 2.
The upper surface of the upright side portion 4b is brought into contact with the lower surface of the extended upper edge portion 2g of the metal frame 2 while being brought into contact with the inner surface of d.

In the present invention, further, in the above-mentioned gasket 4, the butyl rubber 5 is previously applied to the upper inner side surface of the upright side portion 4b, and this is dried and solidified. In the gasket 4, a storage groove 4d is provided at a corner of the base 4a and the upright side 4b, which are lower than the butyl rubber 5. As a result, by fitting the gasket 4 with the butyl rubber 5 into the fitting groove 2a of the metal frame 2, as shown in FIG.
As clearly shown in (A), the receiving upper surface portion 4 of the base portion 4a.
e, butyl rubber 5 and extended upper edge 2 of metal frame 2
With g, the fitting groove 6 having an opening is formed inward.

After the gasket 4 is fitted to the metal frame 2 in the retaining state as described above, the metal frame 2 is then heated with a desired heat source to attach the butyl rubber to the gasket 4. 5 is softened, and the temperature at this time is 50 ° C to 80 ° C. Under this softened state, the above-mentioned fitting groove 6 in the metal frame 2 is fitted to the outer end portion 1a of the above-mentioned solar cell module panel 1, whereby the outer end portion 1a is made of butyl rubber. As a result, the butyl rubber 5 in a softened state will be pressed against the butt 5.

As a result, a part of the butyl rubber 5 in a fluid state remains between the outer end portion 1a and the upright side portion 4b of the gasket 4, and the other part is the upper transparent portion of the solar cell module panel 1 described above. It is pressed into the gap between the member 1b and the extended upper edge portion 2g of the metal frame 2, and further into the gap between the lower protective sheet 1c of the solar cell module panel 1 and the receiving upper surface portion 4e of the gasket 4, respectively. The gap is filled in these gaps, and in the illustrated embodiment, it is also filled in the storage groove 4d.

After the above-mentioned infiltration, the metal frame 2
Stop heating and leave it in the room to cool, or
If necessary, the butyl rubber 5 is hardened by forced cooling such as air cooling or water cooling, thereby completing all the steps according to the present invention. Of course, at this time, if the amount of butyl rubber 5 is properly adjusted, the amount of butyl rubber 5 will be insufficient and the outer end portion 1a will be incompletely sealed, or a large amount will be lost to cause metal loss. The butyl rubber 5 does not overflow from the extended upper edge portion 2g of the frame 2 onto the upper transparent member 1b.

Regarding the power supply device using a solar cell manufactured by the above-mentioned method according to the present invention, JI such as temperature / humidity cycle
When the environmental test specified in SC8917 was conducted,
The following environmental and durability test results were obtained. (Test standard J
IS C 8917, inspection standard JIS (8914 89
18) As mentioned above, each characteristic after the test is the inspection standard JIS C.
It was confirmed that 8914 and 8918 were satisfied.

[0020]

The present invention is a method that can be implemented as described above. Therefore, when a metal frame is incorporated into a solar cell module panel as in the conventional method, a large force is required or a long time is required. It is possible to greatly improve work efficiency by eliminating it. Moreover, since the sealing condition is good, rainwater, salt, etc. do not enter from the outer edge of the solar cell module panel, and as a result, deterioration of the solar cell element and the filler can be prevented for a long period of time.
It is possible to prevent lowering of withstand voltage and electrical insulation resistance, and if the amount of butyl rubber prepared in advance is set to an appropriate amount, a sealing failure will occur or butyl rubber will unintentionally flow out, impairing the appearance of the product. That is also solved.

[Brief description of drawings]

FIG. 1A is a longitudinal sectional front view showing a state in which a gasket is fitted to a metal frame in the method according to the present invention,
(B) is a vertical sectional front view showing a state in which the fitting groove of (A) is fitted to the outer end portion of the solar cell module panel.

FIG. 2 is a vertical sectional front view showing an example of a power supply device using a conventional solar cell.

FIG. 3A is a vertical sectional front view showing a method of fitting a metal frame to an outer end portion of a conventional solar cell module before fitting, and FIG. It is a vertical cross-sectional front view before fitting which showed an example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell module panel 1a Outer end part 1b Upper transparent member 1c Lower protective sheet 1d Filler 1e Solar cell element 2 Metal frame 2a Fitting groove 2c Detent part 2g Extended upper edge part 4 Gasket 4c Locked part 4e Receiving Bearing upper surface 5 Butyl rubber 6 Groove for fitting

Claims (1)

[Claims] 1. A gasket formed so that it can be fitted into a fitting groove formed with a retaining portion of a metal frame in a retaining state, butyl rubber is applied to the upper inner surface of the gasket and dried. By fitting the gasket into the fitting groove of the metal frame, the locked portion of the gasket is engaged with the retaining portion, whereby the receiving upper surface portion of the gasket, the butyl rubber and the upper layer thereof. With the upper edge of the metal frame extending from the inside to the inside, a fitting groove that opens inward is formed, and the butyl rubber is softened by heating the metal frame. A solar cell module panel in which solar cell elements are embedded between the upper transparent member and the lower protective sheet, which are connected via a filling material. Fit the groove for fitting in the above, thereby pressing the outer end portion against the butyl rubber,
The butyl rubber is allowed to infiltrate between the upper transparent member and the extended upper edge portion of the metal frame and between the lower protective sheet and the receiving upper surface portion of the gasket to cure the butyl rubber. A method of fitting a metal frame to the outer end of the battery module panel.