KR20110078963A - Thin film silicon solar cell module and method for manufacturing thereof, method for connecting the module - Google Patents

Thin film silicon solar cell module and method for manufacturing thereof, method for connecting the module Download PDF

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Publication number
KR20110078963A
KR20110078963A KR1020090135897A KR20090135897A KR20110078963A KR 20110078963 A KR20110078963 A KR 20110078963A KR 1020090135897 A KR1020090135897 A KR 1020090135897A KR 20090135897 A KR20090135897 A KR 20090135897A KR 20110078963 A KR20110078963 A KR 20110078963A
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South Korea
Prior art keywords
glass
solar cell
thin film
cell module
photovoltaic
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KR1020090135897A
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Korean (ko)
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KR101120100B1 (en
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남동헌
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주식회사 효성
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/02002—Arrangements for conducting electric current to or from the device in operations
    • H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
    • H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
    • H01L31/0201—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising specially adapted module bus-bar structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • H01L31/0465—PV modules composed of a plurality of thin film solar cells deposited on the same substrate comprising particular structures for the electrical interconnection of adjacent PV cells in the module
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The present invention relates to a thin film solar cell module, a method for manufacturing the same, and a method for connecting the modules. In an exemplary embodiment of the present invention, a plurality of photovoltaic films 110 formed in a substantially band shape on a glass 100 coated with a transparent electrode TCO are deposited and laser scribed in a state of being arranged. The busbar electrode 120 is formed by printing a conductive paste on a predetermined area including an edge portion of the glass 100. Then, to insulate the bus bar electrode 120 formed at the edge of the glass 100 and the photovoltaic film 110 positioned on the glass 100, an insulating material is coated with a dispenser to form an insulating film 130. ). It is not necessary to form the insulating film 130. When the insulating film 130 is formed, the conductive paste is surrounded by the insulating film 130 so that the bus bar electrode 120 and the solar power film 110 are connected to each other by using a dispenser. The conductive film 140 is patterned. Thereafter, the protective sheet 150 and the rear sheet 160, which are EVA / PVB sheets, are laminated in order to complete the thin film solar cell module 170. According to the present invention, the manufacturing process can be simplified, manufacturing cost can be reduced, and since thin film solar cell modules can be easily connected in series, they can be easily applied to building integrated photovoltaic (BIPV). There is an advantage to that.

Description

Thin film silicon solar cell module and method for manufacturing description, Method for connecting the module}

The present invention relates to a thin film solar cell module, and more particularly, to a thin film solar cell module and a method of manufacturing an electrode formed on a side (edge) of a glass for thin film solar cell (glass), and a method of interconnecting the thin film solar cell module.

The voltage from one cell, the smallest unit of a solar cell, is about 0.5 V, which is very small and easily affected by the external environment. Modules of solar cells package these cells. That is, the solar cells are connected in series or in parallel according to the required capacitance.

Various methods of manufacturing the solar cell module have been proposed, and a method of manufacturing a thin film solar cell module which is widely used among them will be described with reference to FIG. 1.

In FIG. 1A, a glass 1, a transparent conductive film (TCO) (not shown), and a photovoltaic film (a-Si, CIGS, CdTe) 3 are formed according to a deposition process and a laser scribing process. In order to fix the bus bar 7 (FIG. 1B) on the photovoltaic film 3, the conductive paste 5 is coated with a dispenser 10. For reference, the photovoltaic film 3 includes a unit solar cell layer in a band shape covering the TCO, and a metal electrode formed in a strip shape covering the solar cell layer.

In FIG. 1B, the bus bar 7 is formed and the ribbon 9 for connecting the bus bar and the junction box is fixed with the array and the insulating sheet 11.

In FIG. 1C, the protective sheet 20 and the rear sheet 30 of EVA (Ethylene Vinyl Acetate) or PVB (Poly vinyl butylo), which prevent invasion of foreign substances or moisture, are laminated in order. (laminaton) In this case, the protective sheet 20 includes a Teflon protective sheet 20a at a portion where the junction box will be described later, and the rear sheet 30 also has holes 30a at positions corresponding to the junction boxes 40 and 1e. ) Is formed.

The lamination state is as shown in FIG. 1D. In addition, FIG. 1D illustrates a state in which the Teflon protective sheet 20a on the junction box connecting electrode is removed in the laminated state.

When the Teflon protective sheet 20a is removed, the junction box 40 is assembled to the junction box connecting electrode as shown in FIG. 1E, and the assembled portion is filled with a sealant.

Finally, as shown in FIG. 1F, the frame 50 is assembled to complete the solar cell module 60.

The completed solar cell module is sent to the metal electrode through a bus bar when electricity is generated in the solar cell, the junction box provides a structure to collect electricity from the metal electrode.

However, the above-described prior art has the following problems.

First, a process of arranging and fixing ribbons for busbars and junction boxes on photovoltaic films (a-Si, CIGS, CdTe) has been performed by hand at present, which reduces manufacturing hassles and efficiency of manufacturing processes.

In addition, in order to connect the junction box electrodes and the junction box, a process of removing a portion of the protective sheet and the rear sheet was necessary.

In addition, the manufacturing cost could not be reduced because the junction box must be present.

In addition, when the thin film solar cell module manufactured according to the prior art is applied to a building integrated photovoltaic (BIPV), since the wiring must be done through the junction box, the electric wire becomes complicated and it is difficult to apply it directly to the outer wall glass.

Accordingly, an object of the present invention is to solve the above problems, and to manufacture a thin film solar cell module through a simpler and more automated manufacturing process.

Another object of the present invention is to remove the junction box structure in the thin film solar cell module and the process of forming the bus bar arrangement process and the junction box connection hole.

According to a feature of the present invention for achieving the above object, in a state in which a plurality of photovoltaic films are arranged on a glass coated with a transparent electrode (TCO), a predetermined region of the corner at the corner of the glass Printing a conductive paste to form a bus bar electrode; Forming an insulating film around an edge of the solar power film to prevent shunt of the solar power film; Forming a conductive paste to cover the insulating film, and then connecting the bus bar electrode and the solar power film; And laminating a protective sheet and a back sheet on the glass.

According to another feature of the present invention, in a state in which a plurality of photovoltaic films are arranged on a glass coated with a transparent electrode (TCO), around the edge of the photovoltaic film to prevent shunt of the photovoltaic film Forming an insulating film; Forming a bus bar electrode by printing a conductive paste to cover the insulating layer and include a predetermined area of the corner at a corner of the glass; And laminating the protective sheet and the back sheet on the glass.

A busbar electrode may be first formed at an edge of the glass coated with the transparent electrode TCO, and the solar cell may be formed on the glass.

The busbar electrodes of the thin film solar cell module manufactured by the above method may be directly connected to connect a plurality of thin film solar cell modules in series.

According to another feature of the invention, the glass of a predetermined size (Glass); A plurality of transparent electrodes (TCO) coated on the glass; A photovoltaic film formed over the transparent electrode in a band shape, each of which is electrically connected in series; And a bus bar electrode formed while covering the edge region of the glass.

In the present invention, a bus bar electrode is formed in a corner portion including the side surface of the thin film solar cell module by various methods to manufacture the thin film solar cell module.

By doing so, the bus bar arrangement of the conventional manufacturing process and the process of fixing the same can be eliminated, but such a process has been performed by hand, but in the present embodiment, all the processes removed therefrom can be automated to shorten the process. .

In addition, since the present invention only needs to connect a portion where the bus bar electrode of the thin film solar cell module is formed, the junction box is not required and the cost is reduced. Can be omitted.

First of all, the thin film solar cell modules can be easily connected in series because they can be connected in series.

Hereinafter, a preferred embodiment of a thin film solar cell module, a method for manufacturing the same, and a method for connecting the modules according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a process chart showing a method of manufacturing a thin film solar cell module according to an embodiment of the present invention.

FIG. 2A illustrates a state in which a plurality of photovoltaic films 110 formed in a substantially band shape on a glass 100 coated with a transparent electrode TCO are deposited and laser scribed. The photovoltaic layer 110 is an amorphous silicon (a-Si) solar cell made by injecting amorphous silicon between the glass substrate, CdTe solar cell based on cadmium / tellurium compound, copper / indium / gallium / selenium compound The used CIGS / CIS solar cell and the like can be used.

Here, the structure of the photovoltaic layer 110 is briefly described. A TCO is formed in a band shape insulated from each other on an upper portion of the glass 100, and a unit solar cell (semiconductor) layer is formed in a band shape covering the TCO. The metal electrode is formed in a band shape covering the solar cell layer. Each photovoltaic film 110 has a structure electrically connected in series with each other.

Next, in a state in which the photovoltaic film 110 is arranged on the glass 100, a conductive paste is printed on a predetermined area including a corner portion of the glass 100 as shown in FIG. 2B. The busbar electrode 120 is formed. In the drawing, the bus bar electrode 120 is formed by roller printing. But other methods are possible. For example, Mask Spray, Mask Sputtering, Edge Diping, Inkjet, Flexo Printing, Pad Printing, Brush Printing, etc. There is this.

In FIG. 2C, an insulating material is coated with a dispenser to insulate the bus bar electrode 120 formed at the corner of the glass 100 and the photovoltaic film 110 positioned on the glass 100. 130). That is, the insulating film 130 is intended to prevent the shunt from occurring in the photovoltaic film 110. If the shunt is not generated, the insulating film 130 is not necessarily formed.

When the insulating film 130 is formed, the conductive paste is surrounded by the insulating film 130 so that the bus bar electrode 120 and the solar power film 110 are connected to each other by using a dispenser. The conductive film 140 is patterned. When the pattern of the conductive layer 140 is formed, a firing process is performed at a predetermined temperature. Once the pattern is formed up to the conductive film 140 is shown in Figure 2d, the firing process is performed after the pattern is formed in Figure 2d.

When the process of FIG. 2D is completed, as shown in FIG. 2E, the protective sheet 150 and the rear sheet 160, which are EVA / PVB sheets, are sequentially laminated.

Then, the thin film solar cell module 170 is completed as shown in FIG. 2F.

3 is a process chart showing a method of manufacturing a thin film solar cell module according to another embodiment of the present invention. 3 is also to form a bus bar electrode on the edge of the glass as in the embodiment of FIG. There are only a few differences in the manufacturing process.

FIG. 3A illustrates a state in which a plurality of photovoltaic films 210 having a substantially band shape are deposited and laser scribed on a TCO coated glass 200. The photovoltaic film 210 is amorphous silicon (a-Si) solar cells made by injecting amorphous silicon between glass substrates, CdTe solar cells based on cadmium / tellurium compounds, copper / indium / gallium / selenium compounds The used CIGS / CIS solar cell and the like can be used.

In the state of FIG. 3A, an insulating material 220 is formed by applying an insulating material to a corner of the photovoltaic film 210 positioned on the glass 200 with a dispenser. This state is well illustrated in FIG. 3B. The insulating film 220 is applied in a form that completely surrounds a portion of the side surface and the upper surface of the photovoltaic film 210 as shown in the figure. At this time, the insulating film 220 is to prevent the shunt of the photovoltaic film 210. Thus, if the shunt does not occur, the insulating film 220 does not necessarily need to be formed.

When the insulating film 220 is formed, the conductive paste is formed in such a manner that the glass 200 and the photovoltaic film 210 can be connected while completely enclosing the insulating film 220 as shown in FIG. 3C. ) Is printed to form the busbar electrode 230. The busbar electrode 230 should also be printed on the side surface of the glass 200. The formation method of the busbar electrode 230 is the same as the previous example. That is, roller printing, mask spray, mask sputtering, edge diping, inkjet, flexo printing, pad printing , Brush printing, or the like can be used.

When the bus bar electrode 230 is formed, as shown in FIG. 3d, the protective sheet 240 and the rear sheet 250, which are EVA / PVB sheets, are sequentially laminated.

Then, the thin film solar cell module 260 is completed as shown in FIG. 2F.

4 is a configuration diagram in which a plurality of thin film solar cell modules 170 or 260 manufactured according to the present invention are connected in series.

That is, the thin film solar cell module 170 or 260 manufactured by the above-described FIGS. 2 and 3 has a bus bar electrode formed on the side of the glass.

Therefore, it is possible to connect the individual thin film solar cell module (170 or 260) in series only by contacting the corners in accordance with the direction.

Therefore, the thin-film solar cell module 170 or 260 of the present embodiment is currently equipped with a solar panel (power generation module) on the exterior of a building such as an outer wall curtain wall or a balcony to produce electricity on its own, and can be utilized directly in a building. It can be used as exterior wall glass of building integrated photovoltaic (BIPV).

As described above, in the present embodiment, busbar electrodes are formed on the sidewalls of the thin film solar cell module, and thus the manufacturing process and configuration thereof are simplified. By simply contacting the formed parts, serial connection is possible without the junction box.

Although described with reference to the illustrated embodiment of the present invention as described above, this is merely exemplary, those skilled in the art to which the present invention pertains various modifications without departing from the spirit and scope of the present invention. It will be apparent that other embodiments may be modified and equivalent. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

That is, in this embodiment, after depositing a solar power film on the TCO-coated glass, the busbar electrode is formed on the side of the glass, on the contrary, the busbar electrode is first formed on the side of the TCO-coated glass. After the deposition of the photovoltaic film is also applied to the present invention.

1 is a process chart showing a manufacturing method of a solar cell module according to the prior art

2 is a process chart showing a method of manufacturing a thin film solar cell module according to an embodiment of the present invention.

Figure 3 is a process diagram showing a manufacturing method of a thin film solar cell module according to another embodiment of the present invention

4 is a configuration diagram in which a plurality of thin film solar cell modules manufactured according to the present invention are connected in series

* Description of the symbols for the main parts of the drawings *

100 glass 110: solar power film

120 busbar electrode 130 insulating film

140: conductive film 150: protective sheet

160: rear sheet 170: thin film solar cell module

Claims (5)

In a state in which a plurality of photovoltaic films are arranged on a glass coated with a transparent electrode (TCO), a conductive paste is printed to include a predetermined area of the corner at a corner of the glass, thereby forming a bus bar. Forming an electrode; Forming an insulating film around an edge of the solar power film to prevent shunt of the solar power film; Forming a conductive paste to cover the insulating film, and then connecting the bus bar electrode and the solar power film; And Laminating the protective sheet and the back sheet on the glass (Lamination) comprising the step of manufacturing a thin film solar cell module. Forming an insulating film around an edge of the photovoltaic layer to prevent shunt of the photovoltaic layer with a plurality of photovoltaic layers arranged on a glass coated with a transparent electrode (TCO); Forming a bus bar electrode by printing a conductive paste to cover the insulating layer and include a predetermined area of the corner at a corner of the glass; And Laminating the protective sheet and the back sheet on the glass (Lamination) comprising the step of manufacturing a thin film solar cell module. The method according to claim 1 or 2, A busbar electrode is first formed at an edge of the glass coated with the transparent electrode (TCO), and the photovoltaic film is formed on the glass. A method of connecting a thin film solar cell module, characterized in that the plurality of thin film solar cell modules can be connected in series by directly connecting the bus bar electrodes of the thin film solar cell module manufactured by the method of claim 1. Glass of predetermined size; A plurality of transparent electrodes (TCO) coated on the glass; A photovoltaic film formed over the transparent electrode in a band shape, each of which is electrically connected in series; And Thin film solar cell module comprising a bus bar electrode formed while covering the edge region of the glass.
KR1020090135897A 2009-12-31 2009-12-31 Thin film silicon solar cell module and Method for manufacturing thereof, Method for connecting the module KR101120100B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101363344B1 (en) * 2012-01-10 2014-02-19 주식회사 젠스엔지니어링 Silicon solar module using a conductive paste in electrodes and its processing for the same
CN108322184A (en) * 2018-05-04 2018-07-24 王志东 A kind of photovoltaic light skill integral system and construction method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11186572A (en) 1997-12-22 1999-07-09 Canon Inc Photoelectromotive force element module
JP2008544502A (en) * 2005-06-17 2008-12-04 ジ・オーストラリアン・ナショナル・ユニバーシティー Solar cell interconnect process
KR100901745B1 (en) * 2008-03-11 2009-06-10 키스코홀딩스주식회사 The manufacturing method of thin-film photovoltaic cells and module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101363344B1 (en) * 2012-01-10 2014-02-19 주식회사 젠스엔지니어링 Silicon solar module using a conductive paste in electrodes and its processing for the same
CN108322184A (en) * 2018-05-04 2018-07-24 王志东 A kind of photovoltaic light skill integral system and construction method

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