KR101955902B1 - Solar Cell Module Lamination Apparatus - Google Patents

Abstract

According to one embodiment of the present invention, a solar cell module lamination apparatus comprises: a lower chamber provided with a heater and having an opened upper surface; an upper chamber aligned with the lower chamber and having an opened lower surface; a flexible membrane disposed between the lower and upper chambers and individually sealing the upper and lower chambers; a vacuum pump discharging the upper and lower chambers; and a solar cell molding assembly disposed in the lower chamber.

Description

Solar cell module lamination apparatus

The present invention relates to a solar cell module lamination apparatus, and more particularly, to a solar cell module lamination apparatus having a solar cell mold assembly.

The process of forming the protective layer to enhance the durability of the solar cell is called lamination. The laminator is a device for forming a protective layer. About 100 Si-crystalline solar cells, typically produced in 5 inch (125 mm x 125 mm) or 6 inch (156 mm x 156 mm) sizes, are tabbing + strining and laying up one module . Individual modules are laminated through a lamination process. The frame is then constructed using edge sealing and a metal frame. After completing the junction box for the final output connection terminal, the final solar module is completed.

The lamination process proceeds by pressing the laminate structure of the solar cell module for a predetermined time using the pressure between the atmospheric pressure and the vacuum on the heater heated to the melting point of the filler.

Adhesion of the laminate structure is possible even if only mechanical external force is applied under atmospheric pressure. However, in this case, it is not possible to remove bubbles or bubbles formed during the heating and cooling of the filler. Therefore, the lamination structure of the solar cell module is put in a vacuum state, and a pressing method is usually applied in an environment in which the air itself, which causes air bubbles or blisters, is removed.

Even in a vacuum environment, air bubbles are formed in the structure, but are pushed out to the outside of the solar cell module through compression and pumping. The compressive force is vented to the atmospheric pressure in the upper vacuum chamber, and then uniformly transferred to the entire surface of the module through a flexible membrane. The gelation progresses from the sol state to the gel state during the curing time. After cooling, the durability and light transmittance of the filler reaches a state favorable for the function of the solar cell module.

After the solar cell module is laminated, a metal frame is attached to the corner using a sealant such as silicone rubber. This can prevent penetration of moisture entering through the corners of the solar cell module. The metal frame can serve as a mount for securing the solar cell module to the facility when the solar cell module is arranged for a large power generation facility, and it serves to complement the final mechanical durability by maintaining the shape of the entire solar cell module.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lamination apparatus for a solar cell which is free from productivity and change in shape.

A laminating apparatus for a solar cell according to an embodiment of the present invention includes: a lower chamber having a heater and an upper surface opened; An upper chamber aligned with the lower chamber and having an opened lower surface; A flexible membrane disposed between the lower chamber and the upper chamber to seal the upper chamber and the lower chamber, respectively; A vacuum pump for exhausting the upper chamber and the lower chamber; And a solar cell molding assembly disposed within the lower chamber. The solar battery mold assembly includes: a lower mold having a recessed storage space; And an upper mold die having protrusions aligned with the accommodating space of the lower mold die. The lower mold frame includes at least one outlet disposed on a lower surface of the receiving space adjacent to a side wall of the lower mold. In the storage space, a rear protection layer / a bottom filling layer / a solar cell / an upper filling layer / a front protection layer are stacked in order, and a plastic wire forming an outer frame is accommodated in the outside of the storage space.

In one embodiment of the present invention, the rear surface protection layer may include a through hole aligned with the discharge port of the lower mold.

In one embodiment of the present invention, the lower chamber may further include a jaw for aligning the lower mold.

In an embodiment of the present invention, the lower surface of the protrusion of the upper mold may have a triangular concave-convex structure, a hemispherical concave-convex structure, or a rectangular concave-convex structure.

In an embodiment of the present invention, the lower surface of the receiving space of the lower mold frame may have a protruding pattern.

According to an aspect of the present invention, there is provided a lining apparatus for a solar cell, comprising: a lower chamber having a first heater and an upper surface opened; An upper chamber aligned with the lower chamber and having an opened lower surface; A flexible membrane disposed between the lower chamber and the upper chamber, the flexible membrane sealing the upper chamber and the lower chamber, respectively, and having an opening; A second heater disposed at an opening of the flexible membrane and supported by the flexible membrane; A vacuum pump for exhausting the upper chamber and the lower chamber; And a first solar cell molding assembly and a second solar cell molding assembly stacked in that order within the lower chamber. Each of the first solar cell molding assembly and the second solar cell molding assembly includes a lower mold having a recessed receiving space; And an upper mold die having protrusions aligned with the accommodating space of the lower mold die. The lower mold frame includes at least one outlet disposed on a lower surface of the receiving space adjacent to a side wall of the lower mold. In the storage space, a rear protection layer / a bottom filling layer / a solar cell / an upper filling layer / a front protection layer are stacked in order, and a plastic wire forming an outer frame is accommodated in the outside of the storage space.

A laminating apparatus for a solar cell according to an embodiment of the present invention includes: a lower chamber having a heater and an upper surface opened; An upper chamber aligned with the lower chamber and having an opened lower surface; A flexible membrane disposed between the lower chamber and the upper chamber to seal the upper chamber and the lower chamber, respectively; A vacuum pump for exhausting the upper chamber and the lower chamber; And a solar cell molding assembly disposed within the lower chamber. A method of operating a solar cell liner apparatus includes a lower mold having a recessed receiving space and at least one outlet disposed on a lower surface of the receiving space adjacent a side wall of the lower mold, Preparing a solar cell mold assembly including an upper mold die having a protrusion aligned with the accommodating space of the mold die; Disposing a plastic wire constituting an outer frame in the order of the rear protective layer / the bottom filling layer / the solar cell / the top filling layer / the front protective layer in the storage space; Exhausting both the upper chamber and the lower chamber with the flexible membrane disposed between the upper chamber and the lower chamber; Heating the lower chamber; Venting the upper chamber into the atmosphere to pressurize the solar cell mold assembly while heating by a pressure difference; And cooling the lower chamber.

A solar cell module according to an embodiment of the present invention can form an outer frame with a simple structure. The outer frame is produced simultaneously with the lamination process. Therefore, the filling material and the outer frame are adhered together and thus the edge sealing process of the solar cell module is not separately required.

The solar cell module lining apparatus according to an embodiment of the present invention can integrate various solar cell mold assemblies in a single lamination process in a planar arrangement or a vertically stacked module form to be finally manufactured.

1 is a conceptual view illustrating a solar cell lining apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a lower mold of the solar cell mold assembly of FIG. 1. FIG.
3 is a cross-sectional view illustrating the solar cell mold assembly of FIG. 1 and the preliminary solar cell module.
FIG. 4 is a cross-sectional view illustrating the solar cell mold assembly and the solar cell module of FIG. 1;
5A to 5D are diagrams showing a preliminary solar cell module being converted into a solar cell module through a lining process.
6A to 6D are cross-sectional views illustrating a solar cell mold assembly according to another embodiment of the present invention.
7A and 7B are cross-sectional views illustrating a lower mold of a solar cell mold assembly according to another embodiment of the present invention.
8 is a conceptual diagram illustrating a lining apparatus for a solar cell according to another embodiment of the present invention.

A solar cell lining apparatus according to an embodiment of the present invention uses a metal solar cell mold assembly without using a lamination bag in which a frame is not fixed. The solar cell lining apparatus includes a lower chamber, an upper chamber, a flexible membrane, and a solar cell mold assembly. The solar cell mold assembly is disposed in the lower chamber. The solar battery mold assembly includes a lower mold having an accommodating space and an upper mold.

According to an embodiment of the present invention, the solar cell module includes a front protective layer / an upper filling layer / a solar cell / a bottom filling layer / a rear protective layer, and laminated and laminated in the storage space of the solar battery mold assembly. The storage space of the solar cell mold assembly forms the same inner boundary surface as the outer appearance of the shape of the solar cell module to be finally manufactured. A curved surface solar cell module having a curved surface within the range where the solar cell is not broken can serve as an inner boundary surface of the solar cell mold assembly.

The solar cell mold assembly includes a lower mold and an upper mold. The stacked height before pressing is higher than the height of the final fabricated solar cell module. During compression, a filler such as EVA (Ethylene Vinyl Acetate) melts, gelation proceeds, and excess filler is pushed through the outlet formed in the solar cell mold assembly.

The height of the solar cell module finally manufactured by the stopper such as the wing of the upper mold frame is kept constant. The plastic wire constituting the outer frame deforms within the heated temperature and forms an outer frame. The outer frame, the backing layer, and the bottom filling layer are selected in a combination that can have an adhesion. For example, the outer frame, the rear protective layer, and the bottom filling layer may be ABS (Acrylonitrile Butadiene Styrene) synthetic resin, ABS synthetic resin, and EVA (Ethylene Vinyl Acetate), respectively. The outer frame, the back protection layer and the lower filling layer may be ABS resin, PVC (Poly Vinyl Chloride) synthetic resin, or EVA (Ethylene Vinyl Acetate).

The principle of injection molding is applied to the lamination process. Deformation occurs in the lower filler layer and plastic wire where the glass transition temperature (Tg) is in the range of 70 degrees Celsius to 150 degrees Celsius. The lower filling layer is pressed in the direction of decreasing the thickness and is compressed in the gel state, and an amount exceeding the required volume is discharged through the outlet connected to the outside of the solar cell mold assembly. The plastic wire constituting the outer frame is compressed, and the upper surface, the lower surface, and the side are transformed into the shape defined by the solar battery mold assembly. The back protection layer and the front protection layer have a higher glass transition temperature (Tg) value than the lower filling layer, so that there is substantially no height deformation for compression. Finally, the solar cell module can be made in height and profile defined by the solar cell mold assembly. The solar cell module can be manufactured by inserting the wiring connecting the +/- electrodes of the solar cell to the outside in the middle of the lamination.

The material of the plastic wire forming the outer frame is preferably thermoplastics or the like, and it is possible to realize a color utilizing the color of the plastic. It is also possible to make an arbitrary shape by enlarging the area of the outer frame.

In the conventional method, the edge processing of the solar cell module is not actually made in the lamination process, but depends on the edge of the front protective layer or the edge of the rear protective layer. In the conventional method, the edge processing of the solar cell module is performed separately after the lamination process.

According to one embodiment of the present invention, the outer frame is fabricated simultaneously with the lamination process. Therefore, the filling material and the outer frame are adhered together and thus the edge sealing process of the solar cell module is not separately required.

According to an embodiment of the present invention, various solar cell mold assemblies can be integrated in a single lamination process by planar arrangement or vertically stacking and module shapes to be finally manufactured.

According to one embodiment of the present invention, texturing of the surface of the front protective layer of the solar cell module can be performed by changing the surface machining state of the upper mold. The upper filling layer may fill the irregularities on the surface of the upper mold die in the melting step. In this case, the front protective layer may have softness such as PET, TPU (polyreuthane) and the like.

According to an embodiment of the present invention, texturing of the surface of the rear protective layer of the solar cell module is possible by changing the surface machining state of the lower mold. The lower filling layer can fill the irregularities on the surface of the lower mold die in the melting step. In this case, the rear protective layer may have softness such as PET, TPU (polyreuthane) and the like.

According to one embodiment of the present invention, the vertical stacking method of the solar cell mold assemblies can reduce the space of the lamination apparatus. In order to compensate for the amount of heat required for the upper solar cell mold assembly during lamination, an auxiliary heating section may be provided at the upper part. A flexible membrane may be coupled to the outer periphery of the auxiliary heating unit installed on the upper part so that the pressure of the upper chamber may be applied to the upper solar cell mold assembly. Laminated solar cell mold assemblies require more pressing force to accumulate. In this case, it is necessary to keep the pressure of the upper chamber higher than the atmospheric pressure. The pressure of the upper chamber can be made higher by connecting the compressed air pressure or the high pressure gas pipe containing the inert gas such as N2, Ar or the like.

The stacked solar cell mold assembly increases the productivity per unit time by the number of stacked units, and can reduce the installation space required for the apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in different forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the concept of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. Accordingly, although the same reference numerals or similar reference numerals are not mentioned or described in the drawings, they may be described with reference to other drawings. Further, even if the reference numerals are not shown, they can be described with reference to other drawings.

1 is a conceptual view illustrating a solar cell lining apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a lower mold of the solar cell mold assembly of FIG. 1. FIG.

3 is a cross-sectional view illustrating the solar cell mold assembly of FIG. 1 and the preliminary solar cell module.

FIG. 4 is a cross-sectional view illustrating the solar cell mold assembly and the solar cell module of FIG. 1;

5A to 5D are diagrams showing a preliminary solar cell module being converted into a solar cell module through a lining process.

1 to 5, a solar cell lining apparatus 100 according to an embodiment of the present invention includes a lower chamber 110 having a heater 111 and an upper surface opened; An upper chamber 120 aligned with the lower chamber 110 and having an opened lower surface; A flexible membrane (130) disposed between the lower chamber and the upper chamber to seal the upper chamber (120) and the lower chamber (110), respectively; A vacuum pump (165) for exhausting the upper chamber and the lower chamber; And a solar cell molding assembly 140 disposed within the lower chamber 110. The solar cell mold assembly 140 includes a lower mold frame 142 having a recessed storage space 142a; And an upper mold die 144 having a protrusion 144a aligned with the accommodating space 142a of the lower mold die. The lower mold frame 142 includes at least one discharge port 142b disposed on the lower surface of the receiving space 142a adjacent to the side wall of the lower mold frame. A backing layer 151 / a bottom filling layer 152 / a solar cell 153 / an upper filling layer 154 / a front protection layer 155 are stacked in this order on the storage space 142a, The plastic wire 156 constituting the outer frame 156 'is accommodated. The laminating apparatus of the solar cell performs a solar cell lamination process.

The lower chamber 110 may be made of a metal or a metal alloy. The lower chamber 110 may be made of aluminum or stainless steel. The lower chamber 110 may be a container having an open upper surface. The lower chamber 110 may have a receiving space therein, and a heater 111 may be provided on a lower surface thereof. The heater 111 may resistively heat the lower chamber 110 and the solar cell mold assembly 140.

The upper chamber 120 is open at its lower surface and can be aligned and engaged with the upper surface of the lower chamber 110. The upper chamber 120 may be made of a metal or a metal alloy. The upper chamber 120 may be aluminum or stainless steel.

The flexible membrane 130 may be an elastic body such as a silicone rubber having heat resistance. The flexible membrane 130 is disposed between the lower surface of the upper chamber 120 and the upper surface of the lower chamber 110 to seal the upper chamber 120 and to seal the lower chamber 110 have. Further, the flexible membrane 130 may press the upper surface of the solar cell mold assembly 140 due to the pressure difference.

The vacuum pump 165 may be disposed outside and connected to the upper chamber 120 and the lower chamber 110 through a pipe. The upper chamber 120 is branched into two first passages 161a and a second passageway 164a through a pipe and a first valve 161 is disposed in the first passageway 161a and a second passageway 164a may be provided with a second valve 164. The first passage 161a may communicate with the outside atmosphere through the first valve 161. [ The second passage 164a may be connected to the vacuum pump 165 through the second valve 164. The lower chamber 110 may be connected to the third valve 163 through the third passage 163a and to the vacuum pump 165. [ Pressure gauges may be disposed in the second passage 164a and the third passage 163a, respectively.

 The solar cell mold assembly 140 may include a lower mold frame 142 and an upper mold frame 144. The solar cell mold assembly 140 may be a metal or a metal alloy.

The lower mold frame 142 has a recessed receiving space 142a. The storage space may be rectangular or hexagonal depending on the shape of the solar cell module 150 '. The lower mold frame 142 may contact the lower chamber 110 to receive heat. A discharge port 142b may be disposed on the lower surface of the lower mold frame around the edge or adjacent to the side wall. The outlet 142b provides a passageway through which the extra underfill layer 152 is discharged in the curing process. The outlet 142b may be arranged symmetrically and may be two or more. The storage space 142a has a polygonal shape and can be chamfered straight at an edge.

The upper mold frame 144 may include a protrusion 142a protruding from a lower surface of the upper mold die and a stopper 144b contacting the upper surface of the lower mold die. The protrusion 144a may be inserted to be aligned with the upper surface of the storage space 142a. Thus, the distance between the protrusion and the lower surface of the receiving space of the lower mold die provides the height of the solar cell module.

The preliminary solar cell module 150 includes a laminated structure of the rear protective layer 151, the bottom filling layer 152, the solar cell 153, the top filling layer 154, the front protective layer 155, And a plastic wire 156 disposed along the length of the wire. The preliminary solar cell module 150 is converted to the solar cell module 150 'after the lamination process or the curing process.

The rear protection layer 151, the bottom filling layer 152, the solar cell 153, the top filling layer 154 and the front protection layer 155 are sequentially stacked in the storage space 142a, May be disposed along the edge of the solar cell 153. The curing process converts the preliminary solar cell module into a solar cell module by heating the solar cell mold assembly 140 in a vacuum state.

The back protection layers 151 and 151 'may be a polymer sheet such as PET, PE, PP or TPU, a PE coated paper, a glass plate, or a printed circuit board. The rear side protection layer 151 may include a through hole 151a aligned with the discharge port 142b. In the curing step, the rear protective layer 151 may not be substantially deformed in height due to heat and pressure.

The glass transition temperature of the lower filling layer 152 and the upper filling layer 154 may be lower than the glass transition temperature of the lower protection layer 152 and the upper filling layer 154. The lower filling layer 152 and the upper filling layer 154 may be EVA or PVB. 151). ≪ / RTI > Accordingly, the lower filling layer 152 may melt in the curing step to bond the solar cell 153 and the rear protective layer 151 to each other. A part of the rear surface protection layer 151 may leak to the discharge port 142b to form a leakage portion 152 '. The leakage portion 152 '' is later cut off. In addition, the upper filling layer 154 may melt in the curing step to bond the solar cell 153 and the front protective layer 155 together. The lower filling layer and the upper filling layer are pressed in a direction in which the thickness decreases, and can be compressed in a gel state.

The solar cell 153 may be a crystalline silicon solar cell. The solar cell may include a plurality of solar cells.

The front protective layers 156 and 156 'may be a polymer sheet such as PET, PET, PC, or TPU, or a glass plate. The front protective layer 156 may not be deformed in the height direction due to heat and pressure in the curing step.

The plastic wire 156 may be ABS, PVC, PE, or PP. The cross section of the plastic wire 156 may be circular or rectangular. The plastic wire may be deformed by heat and pressure in the curing step. The cross section of the outer frame 156 'may be rectangular. The plastic wire 156 may be the same as the material of the rear protective layer.

The finally formed solar cell module 150 'may be formed into a shape defined by the receiving space 142a. The plastic wire 156 may form an outer frame 156 'surrounding the edge of the solar cell module after the curing step.

The solar cell lining apparatus comprises: a lower chamber (110) having a heater (111) and an open upper surface; An upper chamber 120 aligned with the lower chamber and opened at a lower surface thereof; A flexible membrane (130) disposed between the lower chamber and the upper chamber to seal the upper chamber and the lower chamber, respectively; A vacuum pump (165) for exhausting the upper chamber and the lower chamber; And a solar cell molding assembly 140 disposed inside the lower chamber. The method of operation of the apparatus includes a lower mold frame 142 having a recessed receiving space 142a and at least one outlet 142b disposed on the lower surface of the receiving space adjacent to a side wall of the lower mold frame 142 ) And an upper mold (144) having a protrusion (144a) aligned with the receiving space of the lower mold die, the method comprising: preparing the solar cell mold assembly (140); The rear protective layer 151, the bottom filling layer 152, the solar cell 153, the top filling layer 154 and the front protective layer 155 are sequentially stacked in the storage space 142a and the plastic Disposing a wire (156); Evacuating both the upper chamber and the lower chamber with the flexible membrane (130) disposed between the upper chamber and the lower chamber; Heating the lower chamber (110); Venting the upper chamber (120) to the atmosphere and pressing the solar cell mold assembly (140) while heating by a pressure difference; And cooling the lower chamber (140). Subsequently, the lower chamber is cooled, the lower chamber is vented to the atmosphere, and the solar cell mold assembly 140 is extracted.

6A to 6D are cross-sectional views illustrating a solar cell mold assembly according to another embodiment of the present invention.

Referring to FIG. 6A, the solar cell mold assembly 240 may include a lower mold frame 142 and an upper mold frame 244. The lower surface of the protrusion 242a of the upper mold 244 may have a triangular concave-convex structure.

Referring to FIG. 6B, the solar cell mold assembly 340 may include a lower mold frame 142 and an upper mold frame 344. The lower surface of the protrusion 344a of the upper mold die may have a hemispherical concavo-convex structure.

Referring to FIG. 6C, the solar cell mold assembly 440 may include a lower mold frame 142 and an upper mold frame. The lower surface of the protrusion 444a of the upper mold die may have a rectangular concave-convex structure.

Referring to FIG. 6D, the solar cell mold assembly 540 may include a lower mold frame 542 and an upper mold frame 144. The lower surface of the lower mold frame 542 may have a protruding pattern 542c.

7A and 7B are cross-sectional views illustrating a lower mold of a solar cell mold assembly according to another embodiment of the present invention.

Referring to FIG. 7A, the lower mold frame 642 may include a storage space 642a in which the spare solar cell module 150 is disposed. The lower mold frame 642 may include a discharge port 642b formed around the edge of the storage space. The storage space 642a may further include a connection space 642c extending to one side in a layout plane in which the storage space is disposed. The solar cell is not disposed in the connection space 642c and the rear protection layer 151 / the bottom filling layer 152 / the top filling layer 154 / the front protection layer 155 may be sequentially stacked. The portions created in the connection space can be used to align and align the different solar cell modules 150 'with each other.

Referring to FIG. 7B, the lower mold frame 742 may include a receiving space 742a in which the spare solar cell module 150 is disposed. The storage space may be hexagonal. An alignment member 742b may be disposed around each corner. The alignment member 742b can align the preliminary solar cell module 150.

8 is a conceptual diagram illustrating a lining apparatus for a solar cell according to another embodiment of the present invention.

Referring to FIG. 8, a solar cell lining apparatus 100a includes a lower chamber 110 having a first heater 111 and an open upper surface; An upper chamber 120 aligned with the lower chamber and opened at a lower surface thereof; A flexible membrane 830 disposed between the lower chamber 110 and the upper chamber 120 and sealing the upper chamber 120 and the lower chamber 110 respectively and having an opening 831; A second heater 832 disposed at the opening of the flexible membrane 830 and supported by the flexible membrane 830; A vacuum pump 165 for exhausting the upper chamber 120 and the lower chamber 110; And a first solar cell mold assembly 140a and a second solar cell molding assembly 140b stacked in that order inside the lower chamber 110. Each of the first solar cell mold assembly 140a and the second solar cell mold assembly 140b includes a lower mold frame 142 having a recessed storage space 142a; And an upper mold frame 144 having a protrusion 144a aligned with the accommodating space of the lower mold frame 142. The lower mold frame 142 includes at least one outlet 142b disposed on the lower surface of the receiving space adjacent to the side wall of the lower mold frame. A backing layer 151, a bottom filling layer 152, a solar cell 153, an upper filling layer 154, and a front protection layer 155 are sequentially stacked in the storage space 142a. A plastic wire (156) for forming an outer frame is housed outside the storage space. The laminating apparatus of the solar cell performs a lamination process.

The second heater 832 may be disposed on the upper surface of the second solar cell mold assembly 140a. The flexible membrane 830, which is stretched by the pressure of the upper chamber, may provide thermal contact and pressure between the second solar cell mold assembly 140a and the second heater 832.

An auxiliary pipeline 867a is connected to the upper chamber 120. [ The auxiliary pamp line 867 is connected to the high pressure gas supply 868 through an auxiliary valve 867. The high-pressure gas supplier 868 may fill the upper chamber 110 with nitrogen or argon gas at atmospheric pressure or higher.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect.

110: Lower chamber
120: upper chamber
130: Flexible membrane
140: Solar battery mold assembly
165: Vacuum pump

Claims (7)

A lower chamber having a heater and an upper surface opened;
An upper chamber aligned with the lower chamber and having an opened lower surface;
A flexible membrane disposed between the lower chamber and the upper chamber to seal the upper chamber and the lower chamber, respectively;
A vacuum pump for exhausting the upper chamber and the lower chamber; And
And a solar cell molding assembly disposed within the lower chamber,
The solar battery mold assembly includes:
A lower mold having a recessed receiving space; And
And an upper mold die having protrusions arranged in the accommodating space of the lower mold die,
Wherein the lower mold die includes at least one outlet disposed adjacent a side wall of the lower mold die on a lower surface of the receiving space,
A plastic layer for forming an outer frame is accommodated in the outer space of the storage space,
Wherein the rear protective layer comprises a through hole aligned with the discharge port. The method according to claim 1,
And the rear protective layer includes a through hole aligned with the discharge port of the lower mold frame. The method according to claim 1,
Wherein the lower chamber further comprises a jaw for aligning the lower mold die. The method according to claim 1,
Wherein the lower surface of the protrusion of the upper mold frame has a triangular concavo-convex structure, hemispherical convexo-concave structure, or rectangular convexo-concave structure. The method according to claim 1,
Wherein the lower surface of the receiving space of the lower mold die has a protruding pattern. A lower chamber having a first heater and an upper surface opened;
An upper chamber aligned with the lower chamber and having an opened lower surface;
A flexible membrane disposed between the lower chamber and the upper chamber, the flexible membrane sealing the upper chamber and the lower chamber, respectively, and having an opening;
A second heater disposed at an opening of the flexible membrane and supported by the flexible membrane;
A vacuum pump for exhausting the upper chamber and the lower chamber; And
A first solar cell molding assembly and a second solar cell molding assembly stacked in sequence within the lower chamber,
Each of the first solar cell molding assembly and the second solar cell molding assembly comprises:
A lower mold having a recessed receiving space; And
And an upper mold die having protrusions arranged in the accommodating space of the lower mold die,
Wherein the lower mold die includes at least one outlet disposed adjacent a side wall of the lower mold die on a lower surface of the receiving space,
A plastic layer for forming an outer frame is accommodated in the outer space of the storage space,
Wherein the rear protective layer comprises a through hole aligned with the discharge port. A lower chamber having a heater and an upper surface opened; An upper chamber aligned with the lower chamber and having an opened lower surface; A flexible membrane disposed between the lower chamber and the upper chamber to seal the upper chamber and the lower chamber, respectively; A vacuum pump for exhausting the upper chamber and the lower chamber; And a solar cell molding assembly disposed within the lower chamber, the method comprising:
And a protrusion aligned with the accommodating space of the lower mold frame and having at least one outlet disposed adjacent to the side wall of the lower mold frame at a lower surface of the accommodating space having a recessed accommodating space Preparing a solar cell mold assembly including an upper mold frame;
Disposing a plastic wire constituting an outer frame in the order of the rear protective layer / the bottom filling layer / the solar cell / the top filling layer / the front protective layer in the storage space;
Exhausting both the upper chamber and the lower chamber with the flexible membrane disposed between the upper chamber and the lower chamber;
Heating the lower chamber;
Venting the upper chamber into the atmosphere to pressurize the solar cell mold assembly while heating by a pressure difference; And
And cooling the lower chamber,
Wherein the rear surface protection layer includes a through hole aligned with the discharge port.

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