KR20150096984A - clamp for fixing a solar cell module - Google Patents

Abstract

A clamp according to an embodiment of the present invention may include: a body unit surrounding the bottom and side of a solar cell module; a hinge unit which is prepared to be able to rotate at the end of the side wall of the body, surrounding the top and side which is facing the bottom of the solar cell module; and an elastic unit which binds the solar cell module and the hinge unit by pushing the solar cell module upward.

Description

CLAIMS 1. A clamp for fixing a solar cell module,

The present invention relates to a clamp for easily fixing a solar cell module.

Recently, as energy resources such as oil and coal are expected to be depleted, interest in renewable energy to replace them has increased, and solar cells that produce electric energy from solar energy are attracting attention.

A typical solar cell has a substrate and an emitter layer each of which is made of a semiconductor of a different conductive type such as a p-type and an n-type, and electrodes respectively connected to the substrate and the emitter. At this time, a p-n junction is formed at the interface between the substrate and the emitter.

When light is incident on such a solar cell, electrons in the semiconductor become free electrons (hereinafter referred to as 'electrons') due to a photoelectric effect, and electrons and holes are attracted to n Type semiconductor and the p-type semiconductor, for example, toward the emitter portion and the substrate, respectively. And the transferred electrons and holes are collected by the respective electrodes electrically connected to the substrate and the emitter portion.

These solar cells are connected in series or in parallel, and then packaged in an upper substrate and a lower substrate to prevent damage to the solar cell in a natural environment such as a physical impact, wind and rain. Since this solar cell can generate electricity by receiving sunlight, it should be placed on the ceiling of the building, outside the field, etc., while being installed in a cradle.

Typically, the stand includes a column, a vertical bar and a horizontal bar installed on the column, and the vertical bar and the horizontal bar are frames for supporting the solar cell module, and are formed of square pipes, angles, channels, and the like.

The solar cell module is assembled by using a clamp on a mount stand. The clamp mechanically holds the solar cell module and the mount stand, and securely fixes the solar module on the mount.

However, since a large number of solar cell modules are installed in one cradle, it is not easy to manually install the clamps one by one because the space between one solar cell module and another adjacent solar cell module is very narrow. In other words, the clamp is installed between the four corners of the solar cell module and the cradle, and it is not easy to fix the clamp in a place where the solar cell module and the solar cell module are close to each other. Furthermore, since a large number of solar cell modules are installed in one mount, a large number of clamps must be used in proportion thereto. However, the work of clamping the clamp must be performed manually by the worker. Therefore, a considerable working time is required to fix the clamp.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to make it possible to fasten a clamp to a solar cell module.

A clamp according to an exemplary embodiment of the present invention includes a body portion surrounding a bottom and a side surface of a solar cell module, a rotatable body formed on a side wall of the body portion, the upper surface facing the bottom of the solar cell module, And an elastic portion formed on the bottom of the body portion and pushing up the solar cell module to restrain it as the hinge portion.

The body portion has a "C" shape in cross section and is formed to have a length corresponding to a lateral or longitudinal side of the solar cell module.

The hinge unit may further include a spring having a "C" shape in cross section, one of which is fixed to the hinge and the other of which is fixed to the side wall of the body.

The elastic portion may include a plate spring restrained to the bottom of the body portion by a fixing ring, a convex plate spring, and a stopper positioned adjacent to the fixing ring

According to an embodiment of the present invention, when the clamp is fastened to the solar cell module, it can be joined without using a fastening means such as a conventional bolt / nut, And installation costs can be dramatically reduced.

1 shows a state where a clamp according to an embodiment of the present invention is coupled to a solar cell module.
Fig. 2 shows the clamping view of Fig.
3 is a view showing the configuration of the solar cell module of FIG.
Fig. 4 is a sectional view cut along the hinge portion of the clamp, and Fig. 5 is a sectional view cut along the elastic portion of the clamp.
6 is a view for explaining a method of coupling a solar cell module to a clamp.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood that the present invention is not intended to be limited to the specific embodiments but includes all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In describing the present invention, the terms first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms may only be used for the purpose of distinguishing one element from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The term 'and / or' may include any combination of a plurality of related listed items or any of a plurality of related listed items.

Where an element is referred to as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, but other elements may be present in between Can be understood.

On the other hand, when it is mentioned that an element is "directly connected" or "directly coupled" to another element, it can be understood that no other element exists in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used interchangeably to designate one or more of the features, numbers, steps, operations, elements, components, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

In the drawings, the thickness is enlarged to clearly represent the layers and regions. When a layer, film, region, plate, or the like is referred to as being "on" another portion, it includes not only the case directly above another portion but also the case where there is another portion in between. Conversely, when a part is "directly over" another part, it means that there is no other part in the middle.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries can be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are, unless expressly defined in the present application, interpreted in an ideal or overly formal sense .

In addition, the following embodiments are provided to explain more fully to the average person skilled in the art. The shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

The present invention will now be described with reference to the accompanying drawings. FIG. 1 shows a state where a clamp according to an embodiment of the present invention is coupled to a solar cell module, FIG. 2 shows a clamp view of FIG. 1, FIG. 3 shows a configuration of a solar cell module, And Fig. 5 each show a cross-sectional view cut around the hinge portion and the elastic portion of the clamp, respectively.

In this embodiment, the clamp 10 is composed of the body portion 11, the hinge portion 13, and the elastic portion 15.

The body part 11 is a part constituting the body and has a "C" shape to cover the rim of the solar cell module 100 and has a length corresponding to the side of the side or the longitudinal side of the solar cell module 100 . Since the body portion 11 must have a mechanical strength of a certain level or higher, it is preferable that the body portion 11 is made of a metal material rather than a plastic material.

And an elastic portion 15 is formed on the bottom of the body portion 11. [ The elastic portion 15 includes a leaf spring 15b and a stopper 15c fixed via the fixing ring 15a. The plate spring 15b has a shape of a long plate bent convex upward and is constrained to move to the bottom of the body part 11 through the fixing ring 15a.

The plate spring 15b is bent in the opposite direction to the bent direction and is restored to its original shape. Therefore, in consideration of this point, the plate spring 15b is fixed to the body portion 15b, (11).

Further, a stopper 15c is further formed on the bottom of the body part 11. [ The stopper 15c prevents the leaf spring 15b from being stretched beyond a predetermined level when the leaf spring 15b is stretched in the longitudinal direction, thereby preventing the leaf spring 15b from being damaged. The stopper 15c is disposed adjacent to the fixing ring 15a and may be formed by cutting a part of the floor and folding it up or by fixing a separate member to the floor regardless of the body 11 have.

A hinge portion 13 is pin-coupled to the side wall of the body portion 11 so as to be rotatable. The hinge portion 13 has a "B" shape so as to cover the rim of the solar cell module 100, and is rotated around the pin. When the solar cell module 100 is fixed to the clamp 10, the hinge portion 13 is positioned in a manner to surround the solar cell module and the solar cell module is fixed by the elastic force transmitted from the leaf spring 15b. .

Such a hinge portion 13 may further include a spring 13a, which causes the hinge portion 13 to automatically return to its original position after rotation. That is, when the hinge portion 13 rotates about the pin because of the elastic force of the spring 13a, an elastic force is generated in the direction opposite to the rotation direction. Therefore, it is possible to automatically return to the original position even if the external force is not applied to the hinge portion 13 after the hinge portion 13 is rotated.

3 illustrates a configuration in which a spring 13a is connected to a ring c provided on the hinge portion 13 and a ring c provided on the side wall. However, in order to return the hinge portion 13 to the disc Any form is acceptable if it can be done.

In addition, a column 11a connected to the mounting bracket 11b may be further formed on the bottom of the body part 11. [ As described above, the clamp 10 of this embodiment is a means for fixing the solar cell module to the mount while fixing the clamp 10 to the mount by using the mount bracket 11b, ) Can be fixed to the cradle. On the other hand, since the solar cell module 100 can be installed on the floor by using the mounting bracket 11b without installing the solar cell module 100 on the mount, it is possible to construct the mount directly on the floor by using the clamp of the present embodiment, Lt; / RTI >

The above-described clamp 10 exemplifies that the elastic portion 15 is constituted by the leaf spring 15b. However, if any type of spring can be used as long as it supports the solar cell module 100 while being supported It is acceptable.

3, the solar cell module 100 includes a plurality of solar cells 110, an interconnector 120 that electrically connects the adjacent solar cells 110, a plurality of solar cells 110, A transparent member 140 disposed on the protective film 130 toward the light receiving surface of the solar cells 110 and a rear sheet of opaque material disposed on the lower side of the protective film 130 opposite to the light receiving surface. sheet 150, and a frame 160 that surrounds and protects the edges thereof.

The rear sheet 150 protects the solar cell 110 from the external environment by preventing moisture from penetrating the rear surface of the solar cell module 100. As such, the backsheet 150, which serves as a backsheet, can have a multi-layer structure such as a layer preventing moisture and oxygen penetration, a layer preventing chemical corrosion, and a layer having an insulating property.

The protective film 130 is integrated with the solar cells 110 by a lamination process in a state where the protective films 130 are disposed on the upper and lower sides of the solar cells 110, . As described above, the protective film 130 functioning as the sealing member may be made of a material such as ethylene vinyl acetate (EVA).

The transparent member 140 positioned on the protective film 130 is made of a tempered glass or the like having a high transmittance and excellent breakage prevention function. At this time, the tempered glass may be a low iron tempered glass having a low iron content. In this way, the transparent member 140 functioning as the front surface protecting member can be embossed on the inner side to enhance the light scattering effect.

The plurality of solar cells 110 are arranged in a matrix structure, and the number of the solar cells 110 arranged in the row and column directions can be adjusted as needed. The solar cells 110 arranged in a matrix structure can be connected to each other through the interconnector 120. [

Hereinafter, a method of coupling the clamp 10 to the solar cell module 100 will be described with reference to FIGS. 4, 5, and 6. FIG.

When the solar cell module 100 is pushed downward with the clamp 10 positioned directly below the solar cell module 100, the hinge portion 13 rotates counterclockwise around the axis A force is applied to the leaf spring 15b provided at the bottom of the body portion 11 and the plate spring 15b is deformed in a direction opposite to the direction in which the leaf spring 15b is bent (downward in the drawing) Reserve the force in the opposite direction of the coupling direction. When the solar cell module 100 is moved out of the hinge portion 13, the hinge portion 13 is rotated in the counterclockwise direction. Then, the hinge portion 13 is returned to its original position to return to the upper surface of the solar cell module 100 It is placed in the form of wrapping its side. Since the leaf spring 15b applies an elastic force to the solar cell module 100 in the upward direction so that the hinge portion 13 is coupled with the edge of the solar cell module, , Upward force is applied to the solar cell module 100 and fixed.

As such, when the clamp of the present embodiment is fastened to the solar cell module, the clamp can be coupled without using a fastening means such as a conventional bolt / nut. Accordingly, Innovation can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (5)

A body portion surrounding the bottom and side surfaces of the solar cell module,
A hinge unit which is rotatably formed on a side wall of the body and faces the bottom of the solar cell module,
An elastic part formed on the bottom of the body part and pushing the solar cell module upward to restrain it as the hinge part;
And a clamp for the solar cell module. The method according to claim 1,
Wherein the body portion has a " C "shape in cross section and a length corresponding to a lateral or longitudinal side of the solar cell module. The method according to claim 1,
Wherein the hinge portion has an "a" shape in section. The method of claim 3,
And a spring fixed to one side of the hinge portion and the other side of the spring fixed to a side wall of the body portion. The method according to claim 1,
Wherein the elastic portion is constrained to the bottom of the body portion by a fixing ring and includes a convex plate spring and a stopper positioned adjacent to the fixing ring.

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