KR101023095B1 - Laminator for photovoltaic module - Google Patents

Abstract

The present invention relates to a laminating apparatus for a photovoltaic module including a solar cell. As a solution for realizing the above, a vacuum hole is formed in an upper portion and an upper vacuum chamber in a rubber diaphragm. In the laminating device for a solar cell module comprising an upper chamber is formed with a lower chamber, a vacuum hole is formed in the lower portion and the lower vacuum chamber is formed therein, the upper chamber in the porous form around the vacuum hole in all directions in all directions The panel having pores formed therein so that the air flows is attached to the rubber diaphragm underneath, and the suction diaphragm is evenly applied to the rubber diaphragm of the laminating apparatus used in the laminating process or the like as a solar cell post-process. Not only does the inflation pressure work, but it does not break easily during frequent use. By doing so, it is possible to improve the yield and the reliability of the manufacturing process of the solar cell module.

Upper chamber, rubber diaphragm, vacuum hole, lower chamber, metal foam

Description

Photovoltaic Module Laminating Device {Laminator for photovoltaic module}

The present invention relates to a laminating device for a photovoltaic cell module, and more particularly, to provide a suction and expansion pressure evenly to a rubber diaphragm of a laminating device used in a laminating process as a post-process of a solar cell. The present invention relates to a laminating apparatus of a photovoltaic module for improving the yield and reliability of the manufacturing process of the photovoltaic module by not easily damaged even in use.

Solar devices convert light energy, especially solar energy, into electrical energy. The electrical energy generated by photovoltaic power is in the form of renewable electrical energy, although it can be used for exactly the same purpose as electricity generated by a battery or electricity obtained by an established power grid. One type of photovoltaic device is known as a photovoltaic module or referred to as a solar module.

These modules comprise one or more conventional and preferably a plurality of solar cells or solar cells located between a substrate sheet such as transparent glass or a transparent polymeric material and a backing fusion sheet such as a polymeric material, a metal sheet or another glass sheet. Equipped. The solar cell may be made of a silicon wafer or other suitable semiconductor material, or may be a cell in the form of a thin film typically deposited on a substrate or backing fusion sheet by various processes and methods known to those skilled in the art of solar device manufacturing. have.

One type of more common type of photovoltaic module includes a plurality of individual solar cells made of silicon wafers. Such solar cells are typically made of either single crystals or multiple crystal wafers, and typically these multiple individual cells are electrically linked in a desired arrangement to achieve a module with the desired electrical output upon exposure to the sun.

Solar cells are manufactured in the form of cells and exposed to the outside to absorb solar energy. At this time, the post-processes can withstand the natural environment, such as rain, snow, wind or fog, and hail. As a result, a laminating process of coating ethylen vinyl acetate (EVA) applied to the surface of the solar cell is performed.

The laminating device is provided with a vacuum valve 11 and an upper chamber 10 constituting an upper vacuum chamber 12 therein, and a lower constituting lower vacuum chamber 21 and connected to a vacuum apparatus (not shown). Consists of the chamber 20, the upper chamber 10 has a structure that can be opened and closed by moving up and down through the hydraulic mechanism and the power piston (not shown) with respect to the lower chamber (20).

In particular, the upper vacuum chamber 12 and the lower vacuum chamber 21 may be partitioned by a rubber diaphragm 13, and the lower vacuum chamber 21 may put a solar cell 200 surrounded by EVA and apply heat thereto. The hot plate 22 is provided. Here, the rubber plate 13 is mounted on the upper surface of the upper vacuum chamber 12, it is fixed by the support 14 in each corner of the square shape.

The laminating treatment apparatus thus manufactured manufactures the solar cell 200 in the same manner as in the prior art, wraps the EVA material in a film form, and places it on the hot plate 22.

Subsequently, the temperature of the hot plate 22 is heated to a temperature at which EVA melts (about 100 to 170 ° C). At the same time, the air is discharged through the bottom surface of the lower chamber 20, and the vacuum valve 11 is opened to inject air through the vacuum hole 15, and thus the rubber diaphragm 13 Pressurizes the EVA to pressurize the coating without porosity on the surface of the solar cell 200 while inflating like a balloon.

When the lamination process is completed, the upper chamber 10 is pulled out as shown in FIG. 5B and the solar cell 200 subjected to lamination is removed. At this time, the vacuum valve 11 on the contrary makes the inside of the upper vacuum chamber 12 into a vacuum state so that the rubber diaphragm 13 is attached to the inner upper surface of the upper chamber 10 so that the rubber diaphragm 13 sags downward. To prevent it.

However, the conventional laminator has a structure in which the rubber diaphragm is suspended only at the center portion for suspension of the solar cell after the lamination process as a post process of the solar cell, and the rubber diaphragm has a long distance between the center portion and the support. In this part, a portion that sags downward due to its own weight is generated, and the elasticity of the rubber diaphragm operating at a high temperature falls, which prevents it from functioning. It has resulted.

In particular, as the rubber diaphragm falls down as described above, the elastic diaphragm decreases and the overall size increases, so that the overall uneven coating is not properly performed during EVA coating, resulting in many defective solar cells.

Moreover, the vacuum diaphragm generated through the center of the upper chamber causes the rubber diaphragm to be in close contact with the upper chamber, in which case the vacuum hole is often blocked by the rubber diaphragm, which results in high temperature and air pressure. The inside of the upper vacuum chamber in a state can not be cooled enough to cause the cause.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, an object of the present invention, evenly attached to the upper chamber by a vacuum pressure formed with a wide rubber diaphragm when removing the solar cell after EVA coating as a post-process By dispersing the stress applied to a specific part of the rubber diaphragm, the life of the rubber diaphragm can be extended, and in case of EVA coating, the defect rate generated during coating can be distributed so that the evenly distributed atmospheric pressure or static pressure can be distributed and distributed. It is to provide a laminating device of a solar cell module that can be significantly reduced.

The present invention for realizing this is a solar cell including a vacuum chamber is formed in the upper portion and the upper chamber is formed in the upper vacuum chamber by a rubber diaphragm, and the lower chamber in which the vacuum hole is formed in the lower portion and the lower vacuum chamber is formed therein In the module laminating apparatus, a panel having pores formed therein so that the air flows in all directions in a porous form centering on the vacuum hole, the rubber diaphragm is attached to the upper chamber.

In a preferred embodiment of the present invention, the vacuum passage is characterized in that it is formed radially around the vacuum hole.

According to the solar cell module laminating apparatus according to the present invention, not only the suction and expansion pressure acts evenly on the rubber diaphragm of the laminating apparatus used in the laminating process as a post-process of the solar cell, but also easily damaged in frequent use. By avoiding this, there is an advantage that the yield and reliability of the manufacturing process of the solar cell module can be improved.

When described in detail with reference to the accompanying drawings, preferred embodiments of the solar cell module manufacturing according to the present invention configured as described above are as follows. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention of the user, the operator, or the precedent, and the meaning of each term should be interpreted based on the contents will be.

1 is a longitudinal cross-sectional structural view showing a photovoltaic module manufacturing apparatus according to the prior art, Figure 2 is a longitudinal cross-sectional structural view showing a photovoltaic module manufacturing apparatus in a state where a vacuum pressure is applied to the rubber diaphragm according to the present invention, Figure 3 FIG. 2 is a vertical cross-sectional view illustrating a solar cell module manufacturing apparatus in a state in which the vacuum diaphragm is released to the rubber diaphragm of FIG. 2, and FIG.

Hereinafter, with reference to the accompanying drawings, the configuration and effect of the present invention will be described.

The accompanying drawings are longitudinal cross-sectional structural diagrams showing an operating state of the laminator according to the present invention, in which like reference numerals refer to like reference numerals.

The present invention includes a laminating apparatus 100 including a top chamber 10 and a bottom chamber 20 configured to be configured to open and close a vacuum chamber 12 and 21, respectively, and performing a lamination process of a solar cell 200. In particular, the present invention relates to a laminating device so as to evenly spread the pressure dispersion of the rubber diaphragm 13 configured therewith with rapid evacuation in the upper chamber 10.

In more detail, the upper chamber 10 has a vacuum hole 15 formed in the center thereof, and a rubber diaphragm 13 is mounted on an inner surface facing the lower chamber 20. In the present invention, the vacuum flow path 16 is formed on the inner surface of the upper chamber 10 and the vacuum flow path 16 is connected to the vacuum hole 15 so that the vacuum pressure generating area is maximized to maximize the rubber diaphragm 13. The metal foam panel 30 is interposed between the rubber diaphragm 13 and the support 14 supporting the rubber diaphragm 13 stably to the inner surface of the upper chamber 10. The rubber diaphragm 13 is to protect the rubber diaphragm 13 by dispersing stress.

In other words, the laminating apparatus is provided with a vacuum valve 11 and an upper chamber 10 constituting the upper vacuum chamber 12 therein, a lower vacuum chamber 21 constituting a vacuum apparatus (not shown) and Consists of a lower chamber 20 to be connected, the upper chamber 10 has a structure that can be opened and closed by moving up and down by a hydraulic mechanism 40 including a power piston with respect to the lower chamber 20. .

Here, the vacuum passage 16 is formed in the form of an opening on the inner surface of the upper chamber 10, the opening of the vacuum valve 11 through the vacuum hole 15 of the air from the upper vacuum chamber 12 As the discharge is made, a complete flow path is formed by the rubber diaphragm 13.

The vacuum flow path 16 may be any structure as long as the rubber diaphragm 13 can be stably adhered to the inner surface of the upper chamber 10 by the discharge of air as described above. The panel 30 is formed on the inner side of the upper chamber 10 so that the rubber diaphragm 13 is uniformly attached to the upper chamber 10 instantaneously about the center portion by forming a radial shape around the central portion 15. ), It is preferable to attach the rubber diaphragm 13 to the lower side.

In addition, the panel 30 disposed between the vacuum passage 16 on the inner side surface of the upper chamber 10 and the rubber plate 13 has air flow in all directions in a porous form with respect to the vacuum hole 15. It is a panel in which pores are formed to flow.

In addition, the panel 30 is made of a metal foam or carpon foam form panel prepared by pressing a rigid material capable of securing a vacuum flow path, such as metal yarn or carbon yarn.

In addition, the rubber diaphragm 13 accommodated in the upper chamber 10 is configured to be clamped through the latch-type toggle clamp 50, as shown in FIG.

In addition, a channel having a predetermined depth is formed between the inner surface of the upper chamber 10 and the panel 30, and the vacuum passage 16 extends radially about the vacuum hole 15. It is recessed inside the upper chamber 10.

In addition, since the rubber diaphragm 13 is interposed between the side walls of the upper chamber 10, the latch diaphragm clamp 50 is mounted on the upper chamber 10 so that the rubber diaphragm 13 is held. It is not easy to fix and the assembly of rubber diaphragm in limited space eliminates unnatural defects.

In a preferred embodiment of the present invention, the vacuum flow path 16 is preferably used to form a width of 10 mm or less and 5 mm or less in depth, forming a larger than this depending on the size of the laminating device 100 It is also possible.

Thus, when the solar cell module 200 has a large size, for example, the size of the upper chamber is 1,500 x 2,000 mm, sufficient vacuum pressure may be obtained only by the metal foam panel 30 which is contacted inside the upper chamber. This is to enable vacuum evacuation even in areas that cannot be obtained.

In addition, although the vacuum flow path 16 shows an example formed by intaglio processing in a preferred embodiment of the present invention, those skilled in the art belong to the vacuum chamber 16, the rod member or the like in the upper chamber Attached to the inner surface of the embossed form is also possible to use.

The vacuum flow path 16 formed as described above is illustrated in FIG. 3 when EVA coating is applied to the solar cell 200 using the laminating apparatus 100, that is, when air is injected into the upper vacuum chamber 12. In the same open state, and after the EVA coating treatment on the solar cell 200, when the inside of the upper vacuum chamber 12 through the vacuum hole 15 to make a vacuum pressure state to open the upper chamber 10, The rubber diaphragm 13 is in close contact with the inside of the upper chamber 10 to be in a closed state.

Therefore, even when the rubber diaphragm 13 opens the upper chamber 10, the rubber diaphragm 13 is evenly attached to the upper chamber 10 by the vacuum pressure which is rapidly and evenly diffused through the metal foam panel 30. FIG. To prevent sagging.

Therefore, the metal foam even when the operation is performed in a state exposed to high heat and air pressure while the rubber diaphragm 13 expands like a balloon and shrinks back to its original state after coating so as to perform a coating process on the solar cell 200. By being evenly attached to the lower side of the panel 30, it is to perform a function that can be spread by receiving and dissipating the stress.

As described above, the present invention is configured so that the rubber diaphragm can improve the overall adhesion to the metal foam panel 30 by a vacuum pressure which is quickly and evenly spread in the upper chamber by the metal foam panel 30. As a result, the following effects are obtained.

1) The rubber diaphragm can be more stably fixed to the upper chamber through the vacuum passage as compared with the conventional method of fixing the rubber diaphragm only by the vacuum pressure obtained through the vacuum hole.

2) Thus, even if the rubber diaphragm repeats expansion and contraction at high heat and air pressure difference, the sag can be eliminated. This can extend the life of the rubber diaphragm, which is expensive and imports a lot.

3) Since the rubber diaphragm can be prevented from partially sagging down, the rubber diaphragm can maintain elasticity at all times, so that the rubber diaphragm sags or loses its elasticity, thereby preventing the coating defect rate of the solar cell generated in the laminating process during EVA coating. Can be significantly reduced.

4) Since the vacuum flow path is formed in the vacuum holes and connected to each other, the vacuum holes are not blocked by the rubber diaphragm, so that the inside of each vacuum chamber can be cooled quickly.

At present, the solar cell module used is a very expensive equipment and has a long service life, and the laminating treatment performed for the protection of the solar cell module is specially manufactured to withstand any adverse effects such as temperature change and humidity change. To lose.

Although the present invention has been described in more detail with reference to the examples, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a vertical cross-sectional view showing a solar cell module manufacturing apparatus according to the prior art,

Figure 2 is a longitudinal cross-sectional structure diagram showing a photovoltaic module manufacturing apparatus in a state where a vacuum pressure is applied to the rubber diaphragm according to the present invention,

3 is a vertical cross-sectional view showing a solar cell module manufacturing apparatus in the vacuum pressure is released to the rubber diaphragm of Figure 2,

 4 is a structural diagram illustrating a state in which the upper chamber is moved up and down relative to the lower chamber in FIG. 2, and

5 is a structural diagram illustrating a state in which the rubber diaphragm employed in the present invention is clamped and released through a latch type toggle clamp.

Explanation of symbols on the main parts of the drawings

10: upper chamber

11: vacuum valve

12: upper vacuum chamber

13: rubber diaphragm

15: vacuum hole

20: lower chamber

21: lower vacuum chamber

22: heating plate

30: panel

40: hydraulic mechanism

50: toggle clamp

200: solar cell

Claims (5)

In the laminating apparatus of a solar cell module comprising an upper chamber is formed in the upper vacuum chamber, the upper vacuum chamber is formed by a rubber diaphragm inside, and the lower chamber is formed in the lower vacuum hole, the lower vacuum chamber is formed therein, On the inner surface of the upper chamber, a panel having pores formed therein so that air flows in all directions in a porous form with respect to the vacuum hole, the rubber diaphragm is attached to the lower side, characterized in that Laminating device. The method of claim 1, The panel laminating device of a solar cell module, characterized in that it comprises a rigid material capable of securing a vacuum flow path, such as metal yarn or carbon yarn. The method of claim 1, Laminating apparatus of the solar cell module, characterized in that the inner surface of the upper chamber is provided with a vacuum passage concave radially formed around the vacuum hole. The method of claim 1, And the rubber diaphragm is interposed between the side walls of the upper chamber. The method according to any one of claims 1 to 4, Laminating device of the solar cell module, characterized in that the rubber diaphragm accommodated in the upper chamber is clamped through a latch type toggle clamp.

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