KR101015821B1 - Photovoltaic module and method for manufacturing photovoltaic module - Google Patents

Abstract

The photovoltaic module of the present invention includes a photovoltaic layer for converting irradiated light into electricity, a photovoltaic unit including a first electrode and a second electrode in contact with the photovoltaic layer to supply the electricity to the outside, and the photovoltaic power source. And an additionally inserted seal and a frame into which the seal is inserted.

Photovoltaic Modules, Frames, Seals

Description

Manufacturing method of photovoltaic module and photovoltaic module {PHOTOVOLTAIC MODULE AND METHOD FOR MANUFACTURING PHOTOVOLTAIC MODULE}

The present invention relates to a photovoltaic module and a method of manufacturing the photovoltaic module.

Recently, as the prediction of depletion of existing energy sources such as oil and coal is increasing, interest in alternative energy to replace them is increasing. Among them, the solar cell module is particularly attracting attention because it is rich in energy resources and has no problems with environmental pollution.

Photovoltaic modules use photoelectric conversion to convert light into electrical energy. Photovoltaic modules come in many forms, such as using silicon semiconductors or compound semiconductors. For example, in the case of a silicon semiconductor, when light is incident on a silicon semiconductor doped with an impurity, energy of the light generates electrons and holes in the semiconductor, and current flows to the outside through electrodes and conductors connected to the semiconductor.

As interest in such a photovoltaic module increases and a market is formed, various studies are being conducted to reduce the manufacturing cost and time of the photovoltaic module by simplifying the manufacturing process of the photovoltaic module and improving reliability.

The present invention is to provide a photovoltaic module and a method of manufacturing a photovoltaic module that can simplify the manufacturing process.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

The photovoltaic module of the present invention includes a photovoltaic layer for converting irradiated light into electricity, a photovoltaic unit including a first electrode and a second electrode in contact with the photovoltaic layer to supply the electricity to the outside, and the photovoltaic power source. And an additionally inserted seal and a frame into which the seal is inserted.

The method of manufacturing a photovoltaic module of the present invention forms a photovoltaic layer that converts irradiated light into electricity, and a photovoltaic unit including a first electrode and a second electrode contacting the photovoltaic layer to supply the electricity to the outside. And inserting the photovoltaic unit into a sealing portion whose end is positioned higher than the end of the frame, thereby inserting the sealing portion and the photovoltaic portion into the frame.

The photovoltaic module and the manufacturing method of the photovoltaic module of the present invention can simplify the manufacturing process of the photovoltaic module by including a seal inserted into the frame.

Embodiments of the present invention will be described in detail with reference to the drawings.

1A to 1I illustrate a method of manufacturing a photovoltaic module according to an embodiment of the present invention.

As shown in FIG. 1A, a substrate 100 is prepared first. The substrate 100 may be an insulating transparent substrate 100.

As shown in FIG. 1B, the first electrode 210 is formed on the substrate 100. In an embodiment of the present invention, the first electrode 210 may be formed by a chemical vapor deposition (CVD) method, and may be a transparent electrode including tin oxide (SnO ₂ ) or zinc oxide (ZnO).

As shown in FIG. 1C, the laser is irradiated to the first electrode 210 side or the substrate 100 side to scribe the first electrode 210. As a result, a first separation groove 220 is formed in the first electrode 210. That is, since the first separation groove 220 penetrates the first electrode 210, a short circuit between adjacent first electrodes 210 is prevented.

As illustrated in FIG. 1D, the photoelectric conversion layer 230 is stacked by CVD to cover the first electrode 210 and the first separation groove 220. In this case, the photoelectric conversion layer 230 may be stacked in order of the p-type semiconductor layer, the intrinsic semiconductor layer, and the n-type semiconductor layer. To form the p-type semiconductor layer, when a source gas containing silicon such as mono silane (SiH4) and a gas containing group III elements such as B2H6 are mixed in the reaction chamber, the p-type semiconductor layer is laminated by CVD. . Then, when only the source gas containing silicon flows into the reaction chamber, an intrinsic semiconductor layer is formed on the p-type semiconductor layer by CVD. Finally, when a gas containing a Group 5 element such as PH3 and a source gas containing silicon are mixed, an n-type semiconductor layer is laminated on the intrinsic semiconductor layer by the CVD method.

As shown in FIG. 1E, the laser is irradiated to the substrate 100 side or the photoelectric conversion layer 230 in the air to scribe the photoelectric conversion layer 230. As a result, the second separation groove 240 is formed in the photoelectric conversion layer 230.

As shown in FIG. 1F, a second electrode 250 covering the photoelectric conversion layer 230 and the second separation groove 240 is formed by CVD or sputtering. The second electrode 250 may include at least one of zinc oxide (ZnO) or silver (Ag). In addition, a buffer layer 260 including at least one of indium tin oxide (ITO), tin oxide (SnO 2), or indium zinc oxide (IZO) may be formed on the second electrode 250 by a sputtering method to enhance moisture resistance. Can be.

As shown in FIG. 1G, a laser is irradiated in the air to scribe the photoelectric conversion layer 230, the second electrode 250, and the buffer layer 260. Accordingly, third separation grooves 270 are formed in the photoelectric conversion layer 230, the second electrode 250, and the buffer layer 260.

As shown in FIG. 1H, a silver paste is applied to the first electrode 210 and the second electrode 250 and a bus bar (BB) is attached to a conductive paste such as silver paste. The conductive paste and the bus bar BB are connected to a junction box (not shown) to supply electricity generated from the photoelectric change layer 230 to the outside by light irradiation. In order to protect the photovoltaic cell 200 including the photoelectric conversion layer 230, the first electrode 210, and the second electrode 250, the first protective layer 300 is formed by the lamination method. Cover some or all of the). The first passivation layer 300 may include EVA (Ethylene Vinyl Acetate). In addition, the second passivation layer 400 may be formed on the first passivation layer 300. The second protective layer 400 may include low iron tempered glass. The second protective layer 400 is a TPT structure back sheet in which a poly-vinyl fluoride (PVF) film, a poly-ethynlen terephthalate (PET) film, and a poly-vinyl fluoride (PVF) film are stacked in this order to form a sandwich structure. sheet). In addition, the second protective layer 400 may include a back sheet having a TPT structure in which a poly-vinylidene fluoride (PVDF) film, a poly-ethynlen terephthalate (PET) film, and a poly-vinyldiene fluoride (PVDF) film are sequentially stacked. .

As shown in FIG. 1I, the photovoltaic unit PVU is inserted into the sealing unit 600 inserted into the frame 500. Accordingly, as shown in FIG. 1J, the sealing unit 600 and the photovoltaic unit PVU are inserted into the frame 500. The sealing part 600 may prevent moisture or dust from penetrating into the photovoltaic part PVU.

The sealing part 600 may have elasticity and may be made of rubber or plastic. As illustrated in FIG. 1I, the end E1 of the sealing part 600 may be positioned higher than the end E2 of the frame 500. That is, the elastic force of the sealing part 600 acts to keep the end E1 of the sealing part 600 positioned higher than the end E2 of the frame 500. Accordingly, since the sealing part 600 is opened to the outside of the frame 500 before the photovoltaic part PVU is inserted, insertion of the photovoltaic part PVU is easy.

When the photovoltaic unit PVU is inserted into the sealing unit 600 and the frame 500, the elastic force for positioning the end E1 of the sealing unit 600 higher than the end E2 of the frame 500 is the frame 500. ) Therefore, the sealing part 600 and the photovoltaic part PVU are stably fixed to the frame 500.

As shown in FIG. 1J, the length l2 of the seal 600 may be larger than the length l1 of the frame 500. That is, when the length l2 of the sealing part 600 is smaller than the length l1 of the frame 500, as shown in FIG. 1I, a human or a manufacturing apparatus may have a frame before the insertion of the photovoltaic part PVU. It is difficult to remove the seal 600 from 500. However, when the length l2 of the seal 600 is larger than the length l1 of the frame 500, it is easy for a person or a manufacturing apparatus to remove the seal 600 from the frame 500.

As illustrated in FIGS. 2A and 2B, the photovoltaic unit PVU having the sealing material 700 applied to the edge may be inserted into the sealing unit 600 and the frame 500. Accordingly, the sealing member 700 is positioned between the photovoltaic unit PVU and the sealing unit 600, and the sealing and coupling between the photovoltaic unit PVU and the sealing unit 600 are stable.

3A and 3B, a locking jaw 510 may be located at an end of the frame 500, and a locking groove 610 in which the locking jaw 510 is inserted is positioned at the sealing part 600. can do. The locking jaw 510 and the locking groove 610 may prevent the sealing part 600 from being completely removed from the frame 500 and delayed in the manufacturing process.

As shown in FIGS. 4A and 4B, the frame 500 may include a guide 520 inducing the movement of the sealing part 600 in the frame 500. As such, when the guide 500 includes the guide 520 for inducing the movement of the seal 600 in the frame 500, the seal 600 and the photovoltaic unit PUV may be easily inserted into the frame 500. Is done.

In addition, a photovoltaic unit PUV having a sealing material applied to an edge or an adhesive tape attached thereto may be inserted into the frame 500 together with the sealing unit 600. Accordingly, the combination of the photovoltaic unit PUV, the sealing unit 600 and the frame 500 may be more stable, and may prevent foreign substances or moisture from flowing from the outside.

5A and 5B, when the frame 500 includes a guide 520 inducing the movement of the seal 600 in the inside of the frame 500, the seal 600 may be a guide ( It may include a locking jaw 620 that is caught on the 520. The locking jaw 620 of the sealing part 600 prevents the sealing part 600 from being excessively inserted into the frame 500 and presses the photovoltaic part PUV by the elastic force of the sealing part 600. To increase.

As described above with reference to FIGS. 1I and 1J, and FIGS. 2A through 5B, the sealing unit 600 is positioned inside the frame 500 so that the photovoltaic unit PUV and the sealing unit 600 may be connected to the frame 500. Are inserted at the same time. Accordingly, the manufacturing process is simplified and manufacturing time and cost are reduced compared to the case in which the sealing unit 600 and the photovoltaic unit PUV are separately inserted into the frame 500.

In the embodiment of the present invention, the photovoltaic layer 230 includes amorphous silicon, but the frame 500 and the sealing part 600 of the present invention are applicable to a photovoltaic module including single crystal silicon, polycrystalline silicon, or a compound semiconductor. Do. For example, as shown in FIG. 6, the photovoltaic layer 230 in which the first electrode 210 and the second electrode 250 are positioned on both surfaces thereof may include single crystal silicon, polycrystalline silicon, or a compound semiconductor. .

As shown in FIGS. 5A, 5B, and 6, a photovoltaic unit PUV having a sealing material applied to an edge or an adhesive tape attached thereto may be inserted into the frame 500 together with the sealing unit 600. Accordingly, the combination of the photovoltaic unit PUV, the sealing unit 600 and the frame 500 may be more stable, and may prevent foreign substances or moisture from flowing from the outside.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. will be. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

1A to 1J illustrate a method of manufacturing a photovoltaic module according to an embodiment of the present invention.

2A and 2B show a coupling relationship of a frame, a sealing part, and a photovoltaic part.

3A and 3B show another embodiment of a seal and a frame.

4A and 4B show another embodiment of the seal and the frame.

5A and 5B show another embodiment of the seal and the frame.

6 shows a photovoltaic module according to another embodiment of the present invention.

Claims (12)

A photovoltaic layer that converts irradiated light into electricity, and a photovoltaic unit including a first electrode and a second electrode contacting the photovoltaic layer to supply the electricity to the outside; A sealing part into which the photovoltaic part is inserted; And A frame into which the seal is inserted, The sealing portion has an elastic end to be positioned higher than the end of the frame, the end of the sealing portion of the photovoltaic module is spread out of the frame before insertion of the photovoltaic portion. The method of claim 1, And the photovoltaic layer comprises amorphous silicon, single crystal silicon, polycrystalline silicon or a compound semiconductor. The method of claim 1, The sealing unit is a photovoltaic module characterized in that it comprises a rubber or plastic. The method of claim 1, The length of the sealing unit is a photovoltaic module, characterized in that greater than the length of the frame. The method of claim 1, Photovoltaic module, characterized in that the sealing material is located between the photovoltaic unit and the sealing material. The method of claim 1, Hanging jaw is positioned at the end of the frame, the sealing portion is a photovoltaic module, characterized in that the locking groove is inserted into the locking jaw is located. The method of claim 1, The frame includes a photovoltaic module comprising a guide for inducing movement of the sealing part in the frame. The method of claim 7, wherein The sealing unit is a photovoltaic module, characterized in that it comprises a locking jaw caught in the guide. Forming a photovoltaic layer including an irradiated light into electricity and a photovoltaic layer including a first electrode and a second electrode contacting the photovoltaic layer to supply the electricity to the outside; And Inserting the photovoltaic portion into a sealing portion whose end is positioned higher than the end of the frame such that the sealing portion and the photovoltaic portion are inserted together into the frame; Method of manufacturing a photovoltaic module comprising a. 10. The method of claim 9, The photovoltaic layer is a method of manufacturing a photovoltaic module, characterized in that it comprises amorphous silicon, single crystal silicon, polycrystalline silicon or a compound semiconductor. 10. The method of claim 9, The photovoltaic module manufacturing method, characterized in that the photovoltaic portion coated with a sealing material on the edge is inserted into the sealing portion. 10. The method of claim 9, Method of manufacturing a photovoltaic module, characterized in that the movement of the sealing portion is induced along the guide located inside the frame.

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