KR101733056B1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
KR101733056B1
KR101733056B1 KR1020150122316A KR20150122316A KR101733056B1 KR 101733056 B1 KR101733056 B1 KR 101733056B1 KR 1020150122316 A KR1020150122316 A KR 1020150122316A KR 20150122316 A KR20150122316 A KR 20150122316A KR 101733056 B1 KR101733056 B1 KR 101733056B1
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KR
South Korea
Prior art keywords
frame
solar cell
curved surface
transparent substrate
radius
Prior art date
Application number
KR1020150122316A
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Korean (ko)
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KR20170025608A (en
Inventor
조진영
전준호
장성호
문현록
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1020150122316A priority Critical patent/KR101733056B1/en
Publication of KR20170025608A publication Critical patent/KR20170025608A/en
Application granted granted Critical
Publication of KR101733056B1 publication Critical patent/KR101733056B1/en

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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
    • H01L31/04—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
    • H01L31/048—Encapsulation of modules
    • 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
    • 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
    • H01L31/048—Encapsulation of modules
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • 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
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • 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

Abstract

The present invention relates to a solar cell module.
A solar cell module according to the present invention includes a solar cell that receives light from the outside to produce electricity; A front transparent substrate disposed on the front surface of the solar cell to transmit light and protect the solar cell; A rear sheet disposed on a rear surface of the solar cell to protect the solar cell; A sealing member disposed between the solar cell and the front transparent substrate and between the solar cell and the rear sheet to absorb impact from the outside; And a frame surrounding the outer frame sides of the front transparent substrate and the rear sheet, wherein the frame is in close contact with a side edge of a front transparent substrate, which is in close contact with a front outer frame of the front transparent substrate, and a first curved surface And a rear frame having a second curved surface on the inner side, wherein the radius of the first curved surface of the side frame and the radius of the second curved surface of the rear frame are different from each other.

Description

Solar cell module {SOLAR CELL MODULE}

The present invention relates to a solar cell module.

Recently, as energy resources such as oil and coal are expected to be depleted, interest in alternative energy to replace them is increasing, and solar cells that produce electric energy from solar energy are attracting attention.

Typical solar cells have a semiconductor portion that forms a p-n junction by different conductive types, such as p-type and n-type, and electrodes connected to semiconductor portions of different conductivity types, respectively.

In order to protect the solar cell from the external environment, a plurality of such solar cells are integrated with each other through a lamination process in a state where the solar cells are disposed between the transparent glass substrate and the back sheet, Thereafter, the rim of the solar cell panel is inserted into and attached to the frame, whereby the solar cell module can be manufactured.

On the other hand, when such a frame is used in an external environment, the frame 2 is thermally expanded due to heat generated by sunlight or the environment. As a result, as shown in FIG. 1, The solar cell panel 1 is not properly adhered to the solar cell panel 1 and falls down.

An object of the present invention is to provide a solar cell module.

A solar cell module according to the present invention includes a solar cell that receives light from the outside to produce electricity; A front transparent substrate disposed on the front surface of the solar cell to transmit light and protect the solar cell; A rear sheet disposed on a rear surface of the solar cell to protect the solar cell; A sealing member disposed between the solar cell and the front transparent substrate and between the solar cell and the rear sheet to absorb impact from the outside; And a frame surrounding the outer frame sides of the front transparent substrate and the rear sheet, wherein the frame is in close contact with a side edge of a front transparent substrate, which is in close contact with a front outer frame of the front transparent substrate, and a first curved surface And a rear frame having a second curved surface on the inner side, wherein the radius of the first curved surface of the side frame and the radius of the second curved surface of the rear frame are different from each other.

In one example, the radius of the second curved surface of the rear frame may be greater than the radius of the first curved surface of the side frame.

For example, the ratio of the radius of the first curved surface of the side frame to the radius of the second curved surface of the rear frame may be between 1: 4 and 30.

Alternatively, the radius of the first curved surface of the side frame may be between 1 mm and 5 mm, and the radius of the second curved surface of the rear frame may be between 20 mm and 30 mm.

Accordingly, the first curved surface of the side frame corresponds to the curved surface formed on the side of the front transparent substrate, and the second curved surface of the rear frame corresponds to the curved surface formed by the rear outer rim of the rear sheet attached to the rear surface of the front transparent substrate .

In addition, the length of the rear frame protruding inwardly from the side frame may be longer than the length of the front frame protruding inwardly from the side frame.

For example, the ratio of the length of the front frame protruding inwardly from the side frame to the length of the rear frame protruding inwardly from the side frame may be between 1: 1.5 and 2.5.

Or the length of the front frame projecting inwardly from the side frame is between 5 mm and 10 mm, and the length of the rear frame projecting inwardly from the side frame may be between 7.5 mm and 25 mm.

In addition, an insulating adhesive may be further included between the inner portion of the frame and the front transparent substrate and the rear sheet. The material of the insulating adhesive may include at least one of an acrylic foam tape, a silicone tape, a butyl material, or an elastic adhesive plastic material.

In the solar cell module according to the present invention, the radius of the first curved surface of the side frame and the radius of the second curved surface of the rear frame are different from each other, and the outer surface of the solar cell panel including the front transparent substrate, the solar cell, It is possible to further improve the adhesive force of the frame.

1 illustrates an example in which a conventional frame is thermally expanded and separated from the outer rim of the solar cell module.
2 is an exploded perspective view illustrating an example of a solar cell panel according to the present invention.
FIG. 3 is a view illustrating a state where a frame is mounted on the solar cell panel shown in FIG. 2. FIG.
Fig. 4 is a view for explaining the structure of the frame in Fig. 3, and Fig. 4 (a) shows a state before the frame and the outer frame of the solar cell module are attached to each other. b) shows a state in which the outer frame of the solar cell module and the diagram frame are attached to each other.
FIG. 5 is a view for explaining numerical values according to each part of the frame according to the present invention shown in FIG. 4 more specifically.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

In the drawings, the thickness is enlarged to clearly represent the layers and regions. When a layer, film, region, plate, or the like is referred to as being "on" another portion, it includes not only the case directly above another portion but also the case where there is another portion in between. Conversely, when a part is "directly over" another part, it means that there is no other part in the middle. Also, when a part is formed as "whole" on the other part, it means not only that it is formed on the entire surface (or the front surface) of the other part but also not on the edge part.

2 is an exploded perspective view for explaining an example of the solar cell panel 100 according to the present invention, and shows a state in which the frame 200 is mounted on the solar cell panel 100 shown in FIG.

2 and 3, a solar cell module according to the present invention includes a solar cell panel 100 and a frame 200, and the solar cell panel 100 includes a plurality of solar cells 10, A transparent substrate 40, a sealing material 30, and a back sheet 50. [

Each of the plurality of solar cells 10 functions to produce electricity by receiving light from the outside.

Although not shown, the plurality of solar cells 10 may include a semiconductor layer (not shown) having a pn junction for separating light incident from the outside into holes and electrons, And an electrode (not shown) for collecting the separated carriers.

As described above, the solar cell 10 applicable to the solar cell module according to the present invention includes a conventional solar cell having electrodes on the front surface and the rear surface of the semiconductor layer, a rear solar cell having electrodes on the rear surface of the semiconductor layer, And a junction type solar cell.

Although not shown, the plurality of solar cells 10 may be provided with interconnectors (not shown) capable of electrically connecting a plurality of solar cells 10 in a serial, parallel, or series-parallel form. have.

Such an interconnector may be located on the front or rear surface of the solar cells 10 or may be located between the solar cells 10 to electrically connect the plurality of solar cells 10 to each other, Can be configured as a string that is electrically connected.

The front transparent substrate 40 may be disposed on the front surface of the solar cell 10 to protect the solar cell 10 from external environment, and may be a material capable of transmitting light. For example, the front transparent substrate 40 may be formed of a tempered glass or a transparent plastic material having high transmittance and excellent breakage-preventing function.

At this time, the tempered glass may be a low iron tempered glass having a low iron content. The front transparent substrate 40 may be embossed to improve the light scattering effect.

The sealing material 30 may include a first sealing material 30a and a second sealing material 30b, as shown in Fig. Here, the first sealing material 30a may be positioned between the solar cell 10 and the front transparent substrate 40, and the second sealing material 30b may be positioned between the solar cell 10 and the rear sheet 50.

The sealing member 30 is disposed between the solar cell 10 and the front transparent substrate 40 and between the solar cell 10 and the rear sheet 50 to prevent corrosion due to moisture penetration, Can be protected from external impacts.

For this purpose, the sealing material 30 may be an ethylene-vinyl acetate copolymer resin (EVA), polyvinyl butyral, a silicon resin, an ester resin, an olefin resin, or the like.

The rear sheet 50 can prevent moisture from penetrating the rear surface of the solar cells 10 and protect the solar cells 10 from the external environment. Such a backsheet 50 may have a multi-layer structure such as a layer preventing moisture and oxygen penetration, a layer preventing chemical corrosion.

For example, the backsheet 50 may be of the TPT (Tedlar / PET / Tedlar) type or a polyvinylidene fluoride (PET) formed on at least one side of a base film (e.g., polyethylene terephthalate , ≪ / RTI > PVDF) resin layer

In addition, the front transparent substrate 40, the first sealing material 30a, the solar cell 10, the second sealing material 30b, and the rear sheet 50 as described above are thermally bonded by a lamination process, The panel 100 may be formed.

3, the solar cell module according to the present invention, in the state of being formed of the solar cell panel 100, has a structure in which the frame 200, Can be attached to the outer frame portion of the solar cell panel 100.

The frame 200 may include at least one of an aluminum alloy or plastic. Examples of the plastic include polypropylene (PP), polyethylene (PE) Or modified polyphenylene oxide (MPPO) may be used.

The structure of the frame 200 in the solar cell module according to the present invention having such a structure will be described in more detail as follows.

Fig. 4 is a view for explaining the structure of the frame 200 in Fig. 3 in more detail; Fig. 4 (a) is a view showing a state before the outer frame of the frame 200 and the solar cell panel 100 are attached to each other And FIG. 4 (b) shows a state in which the frame 200 and the outer frame of the solar cell panel 100 are attached to each other.

4 (a) and 4 (b), the frame 200 according to the present invention has a groove into which the outer frame of the solar cell panel 100 is inserted, And may have a structure which is in close contact with the rim.

Here, a curved surface may be formed on the side outer rim and the rear outer rim of the solar cell panel 100. More specifically, a curved surface may be formed on a side edge of the front transparent substrate 40, and the outer edge of the rear sheet 50 may be in close contact with the outer edge of the front transparent substrate 40, 2 curved surface can be formed while gradually decreasing the thickness of the sealing materials 30a and 30b.

4A, the insulating adhesive 270 is adhered to the outer edge of the solar cell panel 100, and is inserted in the direction of the arrow in FIG. 4B. As shown in FIG. 4B, Likewise, the outer rim of the solar cell panel 100 can be attached to the groove formed in the frame 200.

The frame 200 may include a front frame 210, a side frame 220, and a rear frame 230 that constitute a groove into which the outer frame of the solar cell panel 100 is inserted.

The front frame 210 may protrude from the side frame 220 in a direction parallel to the front surface of the front transparent substrate 40 so as to be in close contact with the front edge of the front transparent substrate 40.

The side frame 220 is bent in a vertical direction in the front frame 210 and can be brought into close contact with a side edge of the front transparent substrate 40 and can further improve adhesion to the side surface of the front transparent substrate 40 A first curved surface 220R may be formed on the inner side.

The rear frame 230 may be bent in parallel with the rear surface of the rear sheet 50 in the side frame 220 and may be in close contact with the rear outer rim of the rear sheet 50, A second curved surface 230R may be formed on the inner side in order to further improve the adhesion with the outer frame.

The front frame 210, the side frame 220, and the rear frame 230 may be integrally formed by an injection molding method.

4 (b), when the outer frame of the solar cell panel 100 is inserted into the groove of the frame 200, the gap between the inner portion of the frame 200 and the front transparent substrate 40 And an insulating adhesive 270 may be disposed between the inner portion of the frame 200 and the back sheet 50 to further improve the adhesive force of the frame 200.

The material of the insulating adhesive 270 may include at least one of an acrylic foam tape, a silicon tape, a butyl material, or an elastic adhesive plastic material.

In the solar cell module according to the present invention, the radius R1 of the first curved surface 220R of the side frame 220 and the radius R1 of the first curved surface 220R of the side frame 220, The radius R2 of the second curved surface 230R of the frame 230 may be different from each other.

For example, in consideration of the fact that the diameter of the curved surface is relatively small at the side edge of the solar cell panel 100 and the diameter of the curved surface is relatively large at the rear edge of the solar cell panel 100, The radius R2 of the second curved surface 230R of the side frame 220 can be made larger than the radius R1 of the first curved surface 220R of the side frame 220. [

More specifically, the ratio of the radius R2 of the second curved surface 230R of the rear frame 230 to the radius R1 of the first curved surface 220R of the side frame 220 may be between 1: 4 and 30, The radius R1 of the first curved surface 220R of the frame 220 may be between 1 mm and 5 mm and the radius R2 of the second curved surface 230R of the rear frame 230 may be between 20 mm and 30 mm.

The radius R1 of the first curved surface 220R of the side frame 220 is equal to the radius R1 'of the curved surface formed on the side surface of the front transparent substrate 40, And the radius R2 of the second curved surface 230R of the rear frame 230 can be substantially equal to the radius R2 'of the curved surface formed by the rear outer rim of the rear sheet 50, As shown in FIG.

Accordingly, it is possible to further improve the area where the solar cell panel 100 can be bonded to the inner surface of the frame 200, and thus, when the frame 200 is used in an external environment, Even if the thermal stress is generated by the generated heat, it is possible to more effectively prevent the problem that the frame 200 can not be adhered to the solar cell panel 100 properly, as shown in FIG.

As described above, specific thicknesses and lengths according to the respective parts of the rear frame 230 having the front frame 210, the side frame 220 having the first curved surface 220R, and the second curved surface 230R are described Then,

FIG. 5 is a view for explaining the numerical values according to each part of the frame 200 according to the present invention shown in FIG. 4 more specifically.

5, the length L230 of the rear frame 230 projecting inward from the side frame 220 is longer than the length L210 of the front frame 210 protruding inward from the side frame 220 It can be formed long.

For example, the ratio of the length L230 of the front frame 210 protruding inwardly from the side frame 220 to the length L230 of the rear frame 230 protruding inward from the side frame 220 is 1: 1.5 Or the length L210 of the front frame 210 projecting inward from the side frame 220 is between 5 mm and 10 mm and the length of the rear frame 230 protruding inward from the side frame 220 L230) may be between 7.5 mm and 25 mm.

The length L210 of the front frame 210 protruding inwardly from the side frame 220 may be as long as not covering the front surface of the solar cell 10, The length L230 protruding inwardly from the solar cell 220 may be long enough to cover a part of the rear surface of the solar cell 10.

By making the protruding length L230 of the rear frame 230 relatively longer, it is possible to more firmly support the outer frame of the front solar cell panel 100, and the protruding length L230 of the front frame 210 The amount of light incident on the front transparent substrate 40 can be minimized.

The maximum thickness T210 of the front frame 210 may be between 0.8 mm and 2.0 mm and the maximum thickness T220 of the side frame 220 may be between 1.0 mm and 3.0 mm. ) May have a thickness between 1.0 mm and 3.0 mm.

The front frame 210, the side frame 220 and the rear frame 230 have a numerical range as described above so that the frame 200 has sufficient strength to support the solar cell panel 100 However, when the thickness of each part is excessively increased, the thermal expansion stress becomes excessively large, so that the frame 200 may be warped as shown in FIG. 1, in order to prevent this.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (12)

A solar cell that receives light from the outside to produce electricity;
A front transparent substrate disposed on a front surface of the solar cell and transmitting light therethrough and protecting the solar cell;
A rear sheet disposed on a rear surface of the solar cell to protect the solar cell;
A sealing material positioned between the solar cell and the front transparent substrate and between the solar cell and the rear sheet to absorb impact from the outside; And
And a frame surrounding the outer frame sides of the front transparent substrate and the rear sheet,
The frame
A front frame adhered to a front outer frame of the front transparent substrate,
A side frame closely attached to a side edge of the front transparent substrate and having a first curved surface inside,
A rear frame which is in close contact with a rear outer frame of the rear seat and has a second curved surface inside,
The radius of the first curved surface of the side frame is different from the radius of the second curved surface of the rear frame,
The first curved surface of the side frame corresponds to the curved surface formed on the side of the front transparent substrate,
And a second curved surface of the rear frame corresponds to a curved surface formed by the rear outer rim of the rear sheet. The method according to claim 1,
Wherein the radius of the second curved surface of the rear frame is larger than the radius of the first curved surface of the side frame. The method according to claim 1,
Wherein a ratio of a radius of a first curved surface of the side frame to a radius of a second curved surface of the rear frame is 1: 4 to 30. The method according to claim 1,
The radius of the first curved surface of the side frame is between 1 mm and 5 mm,
And the radius of the second curved surface of the rear frame is between 20 mm and 30 mm. delete delete The method according to claim 1,
Wherein a length of the rear frame protruding inward from the side frame is longer than a length of the front frame protruding inward from the side frame. The method according to claim 1,
Wherein a ratio of a length of the front frame protruding inward from the side frame to a length of the rear frame protruding inward from the side frame is between 1: 1.5 and 2.5. The method according to claim 1,
Wherein the length of the front frame protruding inward from the side frame is between 5 mm and 10 mm. The method according to claim 1,
And the length of the rear frame protruding inward from the side frame is between 7.5 mm and 25 mm. The method according to claim 1,
And an insulating adhesive is further provided between an inner portion of the frame and the front transparent substrate and the rear sheet. 12. The method of claim 11,
Wherein the insulating adhesive material comprises at least one of an acrylic foam tape, a silicon tape, a butyl material, or an elastic adhesive plastic material.
KR1020150122316A 2015-08-31 2015-08-31 Solar cell module KR101733056B1 (en)

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KR1020150122316A KR101733056B1 (en) 2015-08-31 2015-08-31 Solar cell module

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KR1020150122316A KR101733056B1 (en) 2015-08-31 2015-08-31 Solar cell module

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KR101733056B1 true KR101733056B1 (en) 2017-05-08

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CN112789270A (en) 2018-10-09 2021-05-11 出光兴产株式会社 Novel compound, organic electroluminescent element, and electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006179961A (en) 2006-03-28 2006-07-06 Sanyo Electric Co Ltd Solar cell module
US20130134117A1 (en) 2011-11-25 2013-05-30 Hulk Energy Technology Co., Ltd. Frame structure for solar cell module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006179961A (en) 2006-03-28 2006-07-06 Sanyo Electric Co Ltd Solar cell module
US20130134117A1 (en) 2011-11-25 2013-05-30 Hulk Energy Technology Co., Ltd. Frame structure for solar cell module

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