KR102215257B1 - Diaphragm sheet for solar cell module laminating process and laminating apparatus including the same - Google Patents

Abstract

An objective of the present invention is to provide a diaphragm sheet capable of preventing excessive pressure from being applied to an edge portion of a solar cell module without using a rectangular frame enclosing the solar cell module. According to one aspect of the present invention, the diaphragm sheet is to press a solar cell module in a solar cell laminating process. At least a portion of the diaphragm sheet includes an elastic material. The diaphragm sheet comprises: a flat unit which is formed to cover at least one solar cell module and has an upper surface and a lower surface; and protrusions longitudinally formed on the lower surface in the longitudinal direction of the flat unit, and arranged and formed at regular intervals in the longitudinal direction of the flat unit on a portion corresponding to the outside of each longitudinal edge of each solar cell module to be laminated.

Description

Diaphragm sheet for solar cell module laminating process and laminating apparatus including the same TECHNICAL FIELD [0002] A diaphragm sheet for solar cell module laminating process and laminating apparatus including the same

The present invention relates to a diaphragm sheet for pressing a solar cell module in a solar cell module laminating process, and a laminating apparatus including the same.

In general, a solar cell module is formed by bonding a front glass plate and an encapsulant (such as EVA resin), a solar cell, an encapsulant, and a resin-based back sheet, and power generation occurs on one side of the module. On the other hand, there is also a glass to glass type solar cell module that improves durability and allows both sides of the solar cell module to contribute to power generation. A glass-to-glass type solar cell module is formed in a form in which a first glass plate, an encapsulant, a solar cell, an encapsulant, and a second glass plate are bonded.

The laminating process of a solar cell module is a process in which the elements constituting the solar cell module are sequentially stacked and then compressed using a high temperature and vacuum with a laminating device to fix it through an encapsulant. In the laminating process, the solar cell module is pressed with a flat diaphragm sheet made of an elastic material such as silicon.

At this time, excessive pressure is applied to the edge portion of the solar cell module by the diaphragm sheet, and there is a concern that the edge portion is damaged or the thickness of the edge portion is not uniform with respect to other portions. In order to prevent this, the prior art has used a square frame formed to surround the solar cell module in all directions. In other words, by putting the solar cell module to be laminated into the laminating device in the state surrounding it with a square frame, and laminating it by pressing with a diaphragm sheet, excessive pressure of the diaphragm is mainly applied to the square frame instead of the corner of the solar cell module, thereby solving the above problem. .

However, the prior art has several problems. First of all, the cost of manufacturing and managing the above square frame is required. In addition, additional work is required, such as aligning the square frame to the solar cell module to be laminated and fixing it with tape, removing the tape and removing the square frame after the lamination process. Due to this additional work, the production line must be changed, and as the size of the solar cell module is considerably large, it takes several workers and a long working time, resulting in an increase in labor costs and inefficiency in productivity.

An object of the present invention is to provide a diaphragm sheet capable of preventing excessive pressure from being applied to a corner portion of a solar cell module without using a square frame surrounding the solar cell module, and a laminating device including the same. .

The problem to be solved of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A diaphragm sheet according to an aspect of the present invention for solving the above technical problem is a diaphragm sheet for pressing a solar cell module in a solar cell module laminating process, wherein at least a portion of the diaphragm sheet includes an elastic material, at least A flat portion formed to cover one solar cell module and having an upper surface and a lower surface; And protrusions formed elongated along the longitudinal direction of the flat portion on the lower surface, and arranged at intervals from each other along the longitudinal direction of the flat portion at a portion corresponding to an outer edge of each edge in the longitudinal direction of each solar cell module to be laminated. It characterized in that it includes the protrusions to be formed.

The height of the protrusions may be formed larger than the height of the solar cell module to be laminated.

The protrusions may be compressed during the laminating process so that their height is substantially equal to the height of the solar cell module.

The space between the protrusions adjacent to the protrusions may provide a passage so that air contained in the encapsulant of the solar cell module is discharged to the outside during the laminating process.

The protrusions include a first group of protrusions relatively close to a portion corresponding to a vertex of the solar cell module and a second group of protrusions relatively far from a portion corresponding to a vertex of the solar cell module, and the first The height of the protrusions of the group may be greater than the height of the protrusions of the second group.

A diaphragm sheet according to another aspect of the present invention for solving the above technical problem is a diaphragm sheet for pressing a solar cell module in a solar cell module laminating process, wherein at least a portion of the diaphragm sheet includes an elastic material, at least A flat portion formed to cover one solar cell module and having an upper surface and a lower surface; And a protrusion formed on the lower surface thereof in a lengthwise direction of the flat portion, wherein the protrusion is formed at a portion corresponding to an outer edge of each edge in the longitudinal direction of each solar cell module to be laminated, wherein the protrusion includes the protrusion. Holes traversing in the width direction are arranged and formed along the length direction.

The height of the protrusion may be greater than the height of the solar cell module to be laminated.

The protrusion may be formed to be compressed during the laminating process so that the height is substantially the same as the height of the solar cell module.

The holes may provide a passage so that air contained in the encapsulant of the solar cell module is discharged to the outside during the laminating process.

The protrusion includes a first portion relatively close to a portion corresponding to a vertex of the solar cell module and a second portion relatively far from a portion corresponding to the vertex of the solar cell module, and the height of the first portion is Can be greater than the height of 2 parts.

The laminating apparatus according to the present invention for solving the above technical problem is characterized in that it includes the above-described diaphragm sheet.

According to the present invention as described above, by providing a diaphragm sheet that can prevent excessive pressure from being applied to the edge of the solar cell module without using a square frame surrounding the solar cell module, the manufacturing and management cost of the square frame is reduced. In addition, since additional work for fixing and removing the square frame is eliminated, there is no need to change the production line, labor cost is reduced, and productivity is improved.

1 is a perspective view as viewed from below of a diaphragm sheet according to a first embodiment of the present invention.
FIG. 2 is a plan view of a lower surface of the diaphragm sheet of FIG. 1.
3 is a side view in the width direction of the diaphragm sheet of FIG. 1.
4 is a longitudinal side view of the diaphragm sheet of FIG. 1.
5A and 5B show examples of a solar cell module laminating apparatus and a laminating process to which the diaphragm sheet according to the present invention is applied.
6 is a perspective view of a diaphragm seat according to a second embodiment of the present invention as viewed from below.
7 is a plan view of the lower surface of the diaphragm sheet of FIG. 6.
8 is a longitudinal side view of the diaphragm sheet of FIG. 6.
9 is an enlarged view of a longitudinal side view of a diaphragm sheet according to a modified embodiment of the second embodiment.
10 is a longitudinal side view of a diaphragm sheet according to a modified embodiment of the first embodiment.
11 is a longitudinal side view of a diaphragm sheet according to another modified embodiment of the second embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In the following description and the accompanying drawings, substantially the same components are denoted by the same reference numerals, and redundant descriptions will be omitted. In addition, when it is determined that a detailed description of known functions or configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 to 4 are views showing a diaphragm sheet according to a first embodiment of the present invention, FIG. 1 is a perspective view of the diaphragm sheet viewed from below, FIG. 2 is a plan view of the lower surface of the diaphragm sheet, and FIG. 3 is a diaphragm sheet Is a side view in the width direction, and FIG. 4 is a side view in the longitudinal direction of the diaphragm sheet.

The diaphragm sheet according to the present embodiment is a diaphragm sheet for covering and pressing the solar cell module in the solar cell module laminating process, and is formed of an elastic material such as silicon, urethane, etc., and the flat portion 10, the first protrusion They may include fields 21, second protrusions 22, and third protrusions 23.

For convenience of explanation, the solar cell module covered by the diaphragm sheet during the laminating process is displayed in the plan view of FIG. 2. The diaphragm sheet of this embodiment is implemented in a size that can cover four solar cell modules (M1, M2, M3, M4) arranged in 2×2 so that four solar cell modules can be laminated at the same time. That is, in the embodiment of the present invention, it is assumed that the four solar cell modules are arranged in a 2×2 arrangement and input to the laminating device. However, the diaphragm sheet according to the present invention may be implemented to cover various numbers and various arrangements of solar cell modules such as 1, 2, 6, 8, and accordingly the size and structure (eg, the shape of the protrusions, It will be appreciated by those skilled in the art that the arrangement, etc.) can be appropriately modified.

As is well known, the solar cell module includes components (e.g., a front glass plate, an encapsulant, a solar cell, an encapsulant, and a back sheet or a first glass plate, an encapsulant, a solar cell, an encapsulant) before laminating revolutions. , And the second glass plate) overlapping, the encapsulant is crosslinked through a laminating process to form a solar cell module in which the components are integrally compressed.

The flat portion 10 has an upper surface 10a and a lower surface 10b, and is formed in a length and width corresponding to the arrangement of the solar cell modules M1, M2, M3, and M4. For example, when the length and width of the solar cell module are l1 and w1, respectively, the length (l) of the flat portion 10 is greater than the arrangement length (l1×2+ interval) of the two solar cell modules, and the flat portion 10 The width (w) of) is larger than the arrangement width of two solar cell modules (w1×2+interval).

The first protrusions 21, the second protrusions 22, and the third protrusions 23 are formed on the lower surface 10b of the flat portion 10. The first protrusions 21, the second protrusions 22, and the third protrusions 23 may be formed integrally with the flat portion 10, or formed separately from the flat portion 10, and then the flat portion 10 ) May be attached to the lower surface (10b).

The first protrusions 21, the second protrusions 22, and the third protrusions 23 are protrusions formed to be elongated along the longitudinal direction of the flat portion 10, and each solar cell module M1 to be laminated, M2, M3, M4) are arranged in a portion corresponding to the outer periphery of each edge in the longitudinal direction at intervals from each other along the longitudinal direction.

Specifically, the first protrusions 21 are arranged at a distance from each other along the length direction at a portion corresponding to the outer edge of one side (upper side with reference to FIG. 2) in the length direction of the solar cell modules M1 and M3. do. The second protrusions 22 are the outer edges of the other side (lower side with reference to FIG. 2) in the length direction of the solar cell modules (M1, M3) and at the same time, the outer edges of one side edge in the length direction of the solar cell modules (M2, M4). The portions corresponding to each other are arranged at intervals along the length direction. The third protrusions 23 are arranged at a distance from each other along the length direction at a portion corresponding to the outer edge of the other edge of the solar cell module M2 and M4 in the length direction. The length l2 of the arrangement of the first protrusions 21, the second protrusions 22, or the third protrusions 23 may be greater than or equal to the arrangement length of the two solar cell modules (l1×2+ interval).

These first protrusions 21, second protrusions 22, and third protrusions 23 are positioned along the periphery of each edge in the longitudinal direction of each solar cell module during the laminating process, so that the diaphragm sheet Prevents excessive pressure from being applied to the corners of the solar cell module.

Meanwhile, in the laminating process, since the diaphragm sheet is compressed by a very large vacuum pressure, the protrusions 21, 22, and 23 are also compressed. And when the diaphragm sheet is compressed by vacuum pressure to pressurize the solar cell module, it is preferable that the height of the compressed protrusions 21, 22, and 23 substantially coincide with the height of the solar cell module. To this end, the height d1 of the protrusions 21, 22, and 23 in an uncompressed state may be formed to be greater than the height of the solar cell module. For example, the height d1 of the protrusions 21, 22, and 23 in the uncompressed state is formed to be approximately 10 to 30% larger than the height of the solar cell module, so that the protrusions 21, compressed during the laminating process, The height of 22, 23) can be made to match the height of the solar cell module.

In addition, during the laminating process, the air contained in the encapsulant must be smoothly discharged to the outside of the solar cell module by the pressure of the solar cell module. Referring to FIG. 4, the space 20a between adjacent protrusions 21 may provide a passage through which air contained in the encapsulant is discharged from the side surface of the solar cell module to the outside during the laminating process.

Due to the characteristics of the laminating process and the laminating device, since the pressure applied to the longitudinal edge of the solar cell module is more problematic than the widthwise edge of the solar cell module, in the embodiment of the present invention, the protrusions are disposed only at the longitudinal edge of the solar cell module. However, according to an embodiment, if the pressure applied to the width direction edge of the solar cell module is also a problem, the protrusions may also be disposed at the width direction edge of the solar cell module.

5A and 5B show examples of a solar cell module laminating apparatus and a laminating process to which the diaphragm sheet according to the present invention is applied. 5A and 5B are cross-sectional side views of the laminating apparatus in the width direction, FIG. 5A shows before the laminating process, and FIG. 5B shows during the laminating process.

A space opened downward is formed in the upper case 100, and an edge of the flat portion 10 of the diaphragm sheet is fixed on the inner surface of the upper case 100. The upper chamber 110 is formed in the upper case 100 by a diaphragm sheet. In addition, an intake and exhaust port 120 communicating with the upper chamber 110 is provided on the upper surface of the upper case 100. Through the intake and exhaust port 120, the upper chamber 110 may be evacuated to a vacuum state, or atmospheric pressure may be introduced into the upper chamber 110.

A lower chamber 210 opened in an upward direction is formed in the lower case 200, and a hot plate 220 is provided. In addition, an intake and exhaust port 230 communicating with the lower chamber 210 is provided on the lower surface of the lower case 200. Through the intake and exhaust port 230, the lower chamber 210 may be evacuated to a vacuum state, or atmospheric pressure may be introduced into the lower chamber 210.

Between the upper case 100 and the lower case 200, a lower transfer sheet 310 for transferring the solar cell modules M1 and M2 is installed above the hot plate 200 to be movable along the length direction. . In addition, between the upper case 100 and the lower case 200, the upper transfer sheet 320 is provided above the lower transfer sheet 310 and the solar cell modules M1 and M2. As the lower transfer sheet 310 and the upper transfer sheet 320, for example, a Teflon sheet may be used.

A solar cell module laminating process to which the diaphragm sheet according to the present invention is applied will be described as follows.

When the solar cell modules M1 and M2 to be laminated are transferred to a required position by the lower transfer sheet 310 and the upper transfer sheet 320, the temperature of the hot plate 220 is controlled to become a target temperature.

Next, the upper chamber 110 is evacuated through the intake/exhaust port 120 of the upper case 100 and the upper case 100 is lowered to make the upper chamber 110 and the lower chamber 210 respectively sealed. . At this time, since the upper chamber 110 is evacuating, the upper surface of the flat portion 10 of the diaphragm sheet is attached to the upper case 100.

Next, the lower chamber 210 is evacuated through the intake and exhaust ports 230 of the lower case 200. As air in the solar cell modules M1 and M2 is released by the vacuum exhaust of the lower chamber 210, the encapsulant in the solar cell modules M1 and M2 is melted by the heated hot plate 220.

Next, atmospheric pressure is introduced into the upper chamber 110 through the intake/exhaust port 120 of the upper case 100 while maintaining the vacuum state of the lower chamber 210. As a result, an air pressure difference is generated between the upper chamber 110 and the lower chamber 210, and as a result, the diaphragm sheet is extruded downward as shown in FIG. 5B. Then, the flat portion 10 of the diaphragm sheet presses the solar cell modules M1 and M2, and each component of the solar cell module is laminated by the melted encapsulant. As each component of the solar cell module is laminated, the air contained in the encapsulant may be discharged to the outside through the space 20a between adjacent protrusions of the diaphragm sheet.

According to an embodiment of the present invention, when the flat portion 10 of the diaphragm sheet presses the solar cell modules M1 and M2, the protrusions 21 and 22 along the outer edges of the edges of the solar cell modules M1 and M2 Since 23) is positioned, excessive pressure is prevented from being applied to the corners of the solar cell modules M1 and M2. In particular, according to an embodiment of the present invention, the solar cell is not required to use a square frame surrounding the solar cell module as in the prior art, and only by replacing the diaphragm sheet of the existing laminating device with the diaphragm sheet according to the embodiment of the present invention. It is possible to prevent damage or uneven thickness of the solar cell module due to excessive pressure applied to the edge of the module.

When the laminating process is finished, atmospheric pressure is introduced into the lower chamber 210 through the intake and exhaust ports 230 of the lower case 200 and the upper case 100 is raised. Then, the solar cell modules M1 and M2 are transferred to the next process position with the lower transfer sheet 310 and the upper transfer sheet 320.

6 to 8 are views showing a diaphragm sheet according to a second embodiment of the present invention, FIG. 6 is a perspective view of the diaphragm sheet viewed from below, FIG. 7 is a plan view of the lower surface of the diaphragm sheet, and FIG. 8 is a diaphragm sheet It is a longitudinal side view of. Hereinafter, for convenience, differences from the first embodiment will be mainly described.

The diaphragm sheet according to the second embodiment may include a flat portion 10, a first protrusion 31, a second protrusion 32, and a third protrusion 33. In the diaphragm sheet according to the second embodiment, the first protrusions 21, the second protrusions 22, and the third protrusions 23 of the diaphragm sheet according to the first embodiment are respectively provided with a first protrusion 31 , The second protrusion 32 and the third protrusion 33.

Like the first protrusions 21, second protrusions 22, and third protrusions 23, the first protrusion 31, the second protrusion 32, and the third protrusion 33 are attached to the diaphragm sheet. This prevents excessive pressure from being applied to the corners of the solar cell module. In addition, the laminating process and the laminating apparatus described with reference to FIGS. 5A and 5B are equally applied to the diaphragm sheet according to the second embodiment.

The first protrusion 31, the second protrusion 32, and the third protrusion 33 are located in portions corresponding to the outer edges of each edge in the longitudinal direction of each solar cell module M1, M2, M3, M4 to be laminated. , It is formed long along the longitudinal direction of the flat portion 10.

Specifically, the first protrusion 31 is formed to be elongated along the length direction at a portion corresponding to the outer periphery of one edge in the length direction of the solar cell modules M1 and M3. The second protrusion 32 is the outer edge of the other side edge in the longitudinal direction of the solar cell modules M1 and M3, and at the same time, the second protrusion 32 is located along the length direction in a portion corresponding to the outer edge of one edge in the length direction of the solar cell modules M2 and M4. Is formed long. The third protrusion 33 is formed to be elongated along the length direction at a portion corresponding to the outer edge of the other side edge in the length direction of the solar cell modules M2 and M4. The length l2 of the first protrusion 31, the second protrusion 32, and the third protrusion 33 may be equal to or greater than the arrangement length of the two solar cell modules (l1×2+ interval).

The height of the protrusions (31, 32, 33) is similar to the height (d1) of the protrusions (21, 22, 23), the height of the uncompressed state is formed about 10 to 30% greater than the height of the solar cell module. , During the laminating process, the height of the compressed protrusions 31, 32, and 33 may be substantially matched with the height of the solar cell module.

In addition, during the laminating process, the air contained in the encapsulant must be smoothly discharged to the outside of the solar cell module by the pressure of the solar cell module. To this end, holes 30a crossing the protrusions in the width direction are formed in the protrusions 31, 32, and 33, respectively, arranged along the length direction. These holes 30a may provide a passage through which air contained in the encapsulant is discharged from the side of the solar cell module to the outside during the laminating process.

Due to the characteristics of the laminating process and the laminating device, pressure applied to the longitudinal edge of the solar cell module is more problematic than the widthwise edge of the solar cell module, and thus, in the embodiment of the present invention, the protrusions are disposed only at the longitudinal edge of the solar cell module. However, according to an embodiment, if the pressure applied to the width direction edge of the solar cell module is also a problem, the protrusions may also be disposed at the width direction edge of the solar cell module.

9 is an enlarged view of a longitudinal side view of a diaphragm sheet according to a modified embodiment of the second embodiment. As shown in Figure 8, the holes (30a) may be formed so as not to contact the lower surface (10b) of the flat portion (10), as shown in Figure 9, the holes (30a') of the flat portion (10) It may be formed to be in contact with the lower surface (10b).

10 is a longitudinal side view of a diaphragm sheet according to a modified embodiment of the first embodiment.

When the diaphragm presses the solar cell module during the laminating process, there is a greater concern that the vertex portion of the solar cell module is damaged or the thickness is uneven compared to other corner portions. In consideration of this, in the present embodiment, the height of the protrusions relatively close to the portion corresponding to the vertex of the solar cell module among the protrusions of the first embodiment is formed to be greater than the height of the other protrusions.

In this embodiment, the first protrusions 21, the second protrusions 22, and the third protrusions 23 of the first embodiment are replaced by the fourth protrusions 41 of FIG. 10, respectively. The fourth protrusions 41 are divided into a first group 41_1, a second group 41_2, a third group 41_3, a fourth group 41_4, and a fifth group 41_5 along the length direction. do.

Referring to FIG. 2 together, the fourth protrusions 41 correspond to the first protrusions 21 (that is, at a portion corresponding to the outer edge of one edge in the longitudinal direction of the solar cell modules M1 and M3). Formed), the protrusions of the first group 41_1 are protrusions relatively close to the upper left vertex of the solar cell module M1, and the protrusions of the third group 41_3 are the upper right vertex of the solar cell module M1. And are protrusions relatively close to the upper left vertex of the solar cell module M3, and the protrusions of the fifth group 41_5 are protrusions relatively close to the upper right vertex of the solar cell module M3. And the protrusions of the second group 41_2 are protrusions relatively far from the upper left and upper right vertices of the solar cell module M1, and the protrusions of the fourth group 41_4 are relative from the upper left and upper right vertices of the solar cell module M3. It is a distant protrusion. When the height of the protrusions of the second group 41_2 and the fourth group 41_4 is d1, the protrusions of the first group 41_1, the third group 41_3, and the fifth group 41_5 are d2 greater than d1. Is formed in height. Due to these fourth protrusions 41, the flat portion 10 of the diaphragm during the laminating process is applied to the upper left and right upper vertices of the solar cell module M1 and the upper left and right upper vertices of the solar cell module M3. The pressure is more relieved.

11 is a longitudinal side view of a diaphragm sheet according to another modified embodiment of the second embodiment.

In this embodiment, similar to the embodiment of FIG. 10, the height of a portion relatively close to the portion corresponding to the vertex of the solar cell module in the protrusion portion of the second embodiment is formed larger than the height of the other portions.

In this embodiment, the first protrusion 31, the second protrusion 32, and the third protrusion 33 of the second embodiment are replaced by the fourth protrusion 51 of FIG. 11, respectively. The fourth protrusion 51 is divided into a first part 51_1, a second part 51_2, a third part 51_3, a fourth part 51_4, and a fifth part 51_5 along the length direction. .

Referring to FIG. 7 together, the fourth protrusion 51 corresponds to the first protrusion 31 (i.e., formed at a portion corresponding to the outer edge of one edge in the longitudinal direction of the solar cell modules M1 and M3). ), the first part 51_1 is a part relatively close to the upper left vertex of the solar cell module M1, and the third part 51_3 is the upper right vertex of the solar cell module M1 and the solar cell module M3. ) Is a portion relatively close to the upper left vertex of the ), and the fifth portion 51_5 is a portion relatively close to the upper right vertex of the solar cell module M3. And the second part 51_2 is a part relatively far from the upper left and upper right vertices of the solar cell module M1, and the fourth part 51_4 is a part relatively far from the upper left and upper right vertices of the solar cell module M3. . When the height of the second portion 51_2 and the fourth portion 51_4 is d1, the first portion 51_1, the third portion 51_3, and the fifth portion 51_5 are formed with a height of d2 greater than d1. . Due to this fourth protrusion 51, excessive pressure applied by the flat portion 10 of the diaphragm to the upper left and upper right vertices of the solar cell module M1 and the upper left and right upper vertices of the solar cell module M1 during the laminating process. This is more relaxed.

So far, the present invention has been looked at around its preferred embodiments. Those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims for utility model registration rather than the above description, and all differences within the scope equivalent thereto should be interpreted as being included in the present invention.

Claims (11)

In the diaphragm sheet for pressing the solar cell module in the solar cell module laminating process, at least a part of the diaphragm sheet includes a material having elasticity,
A flat portion formed to cover at least one solar cell module and having an upper surface and a lower surface; And
Protrusions formed long along the longitudinal direction of the flat portion on the lower surface, and arranged at a portion corresponding to the outer periphery of each edge in the longitudinal direction of each solar cell module to be laminated at intervals from each other along the longitudinal direction of the flat portion Including the protrusions that become,
The diaphragm sheet, characterized in that the space between the protrusions adjacent to the protrusions provides a passage so that the air contained in the encapsulant of the solar cell module is discharged to the outside during the laminating process. The method of claim 1,
The diaphragm sheet, characterized in that the height of the protrusions is formed larger than the height of the solar cell module to be laminated. The method of claim 2,
The diaphragm sheet, characterized in that the protrusions are compressed during the laminating process so that the height is the same as the height of the solar cell module. delete The method of claim 1,
The protrusions include a first group of protrusions relatively close to a portion corresponding to a vertex of the solar cell module and a second group of protrusions relatively far from a portion corresponding to a vertex of the solar cell module,
The diaphragm sheet, wherein a height of the protrusions of the first group is greater than a height of the protrusions of the second group. In the diaphragm sheet for pressing the solar cell module in the solar cell module laminating process, at least a part of the diaphragm sheet includes a material having elasticity,
A flat portion formed to cover at least one solar cell module and having an upper surface and a lower surface; And
A protrusion formed on the lower surface in a lengthwise direction of the flat portion, and includes a protrusion formed at a portion corresponding to an outer periphery of each edge in the longitudinal direction of each solar cell module to be laminated,
In the protrusion, holes crossing the protrusion in the width direction are arranged in a length direction,
The holes are diaphragm sheet, characterized in that to provide a passage so that air contained in the encapsulant of the solar cell module is discharged to the outside during the laminating process. The method of claim 6,
The diaphragm sheet, characterized in that the height of the protrusion is formed larger than the height of the solar cell module to be laminated. The method of claim 7,
The diaphragm sheet, wherein the protrusion is compressed during the laminating process so that the height is the same as the height of the solar cell module. delete The method of claim 6,
The protrusion includes a first portion relatively close to a portion corresponding to a vertex of the solar cell module and a second portion relatively far from a portion corresponding to a vertex of the solar cell module,
The diaphragm sheet, characterized in that the height of the first portion is greater than the height of the second portion. A solar cell module comprising the diaphragm sheet according to any one of claims 1, 2, 3, 5, 6, 7, 8, or 10. Laminating device.

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