KR101210102B1 - Solar cell panel and solar cell apparatus having the same - Google Patents

Solar cell panel and solar cell apparatus having the same Download PDF

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Publication number
KR101210102B1
KR101210102B1 KR1020110025030A KR20110025030A KR101210102B1 KR 101210102 B1 KR101210102 B1 KR 101210102B1 KR 1020110025030 A KR1020110025030 A KR 1020110025030A KR 20110025030 A KR20110025030 A KR 20110025030A KR 101210102 B1 KR101210102 B1 KR 101210102B1
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KR
South Korea
Prior art keywords
solar cell
connection member
cell panel
substrate
disposed
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KR1020110025030A
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Korean (ko)
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KR20120107370A (en
Inventor
배도원
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엘지이노텍 주식회사
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Priority to KR1020110025030A priority Critical patent/KR101210102B1/en
Publication of KR20120107370A publication Critical patent/KR20120107370A/en
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    • 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

A solar cell panel and a photovoltaic device are disclosed. The solar cell panel includes a substrate; A solar cell disposed on the substrate; And a connection member electrically connected to the solar cell and having magnetic properties. Since the connection member is magnetic, it can be easily connected to the adjacent solar cell panel through the connection member. In addition, adjacent solar cells may be connected to each other through detachment. Accordingly, the solar cell panel has high portability and can be easily installed.

Description

SOLAR CELL PANEL AND SOLAR CELL APPARATUS INCLUDING THE SAME

Embodiments relate to a solar cell panel and a photovoltaic device including the same.

Recently, as the demand for energy increases, the development of a photovoltaic device for converting solar energy into electrical energy is in progress.

In particular, a CIGS solar photovoltaic device, which is a pn heterojunction device having a substrate structure including a glass substrate, a metal back electrode layer, a p-type CIGS-based light absorbing portion, a high resistance buffer, an n-type front electrode layer, and the like, is widely used.

In such a photovoltaic device, research is being conducted to improve electrical characteristics such as low resistance and high transmittance. In addition, research on flexible photovoltaic devices is in progress.

The embodiment is easy to attach and detach, to provide a solar cell panel having a high portability and a solar cell apparatus including the same.

The solar cell panel according to the embodiment includes a substrate; A first solar cell disposed on the substrate; And a first connection member electrically connected to the first solar cell and having magnetic properties.

The solar cell apparatus according to the embodiment includes a first solar cell panel; And a second solar cell panel connected to the first solar cell panel, wherein the first connection member of the first solar cell panel is attached to the second connection member of the second solar cell panel by magnetic force, and is connected. do.

The solar cell panel according to the embodiment includes a connection member having magnetic properties. Accordingly, the solar cell panel according to the embodiment may be attached to or detached from the adjacent solar cell panel by magnetic force.

That is, since the solar cell panel according to the embodiment is easily attached and detached, the solar cell apparatus according to the embodiment can be implemented to easily install and disassemble the solar cell apparatus.

Accordingly, the solar cell apparatus according to the embodiment moves in a disassembled state and can be easily installed. Thus, the solar cell panel and the solar cell apparatus according to the embodiment have high portability.

In addition, since the solar cell panel according to the embodiment is easily detachable, the solar cell panel may maintain a flat state without bending during movement. Therefore, the solar cell panel according to the embodiment can reduce the damage caused when bent. That is, the solar cell panel according to the embodiment can prevent performance degradation due to damage and maintain high efficiency.

1 is a view showing a photovoltaic device according to an embodiment.
2 is a plan view illustrating a solar cell panel according to an embodiment.
3 is a cross-sectional view taken along line AA ′ of FIG. 2.
4 is a cross-sectional view taken along line BB ′ of FIG. 2.
FIG. 5 is a diagram illustrating a state in which adjacent solar cell panels are attached.
6 is a cross-sectional view showing a cross section of a solar cell panel according to another embodiment.
7 is a cross-sectional view showing a cross section of a solar cell panel according to still another embodiment.

In the description of an embodiment, each panel, plate, substrate, portion, layer, cell, or region, etc., is placed on or under the "on" of each panel, plate, substrate, portion, layer, cell, or region, or the like. And " under " include both " directly " or " indirectly " through other components. . In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 is a view showing a photovoltaic device according to an embodiment. 2 is a plan view illustrating a solar cell panel according to an embodiment. FIG. 3 is a cross-sectional view taken along line AA ′ in FIG. 2. 4 is a cross-sectional view taken along line B-B 'of FIG. 2. FIG. 5 is a diagram illustrating a state in which adjacent solar cell panels are attached. 6 is a cross-sectional view showing a cross section of a solar cell panel according to another embodiment. 7 is a cross-sectional view showing a cross section of a solar cell panel according to still another embodiment.

1 to 5, the photovoltaic device according to the embodiment includes a plurality of solar cell panels (P). The solar panels P are attached to each other by magnetic force. In addition, the solar cell panels P are electrically connected to each other. The solar cell panels P may be connected in series.

As shown in FIGS. 2 to 4, the solar cell panel P includes a support substrate 100, a plurality of solar cells C1, C2... Cn, a first connection part 200, and a first connection. The member 300 includes a second connecting portion 400 and a second connecting member 500.

The support substrate 100 has a plate shape. The support substrate 100 may be rigid or flexible. Examples of the material used as the support substrate 100 include a metal such as stainless steel or a polymer such as polyimide. In addition, a glass substrate including soda lime glass may be used as the support substrate 100.

The solar cells C1, C2... Cn are disposed on the support substrate 100. The solar cells C1, C2 ... Cn convert sunlight into electrical energy. The solar cells C1, C2... Cn may be connected in series with each other. The solar cells C1, C2 ... Cn may be solar cells, silicon-based solar cells, or dye-sensitized solar cells including a group I-III-IV semiconductor compound such as CIGS-based solar cells.

For example, the solar cells C1, C2... Cn may include a back electrode layer 110, a light absorbing layer 120, and a front electrode layer 150.

The back electrode layer 110 is disposed on the support substrate 100. The back electrode layer 110 includes a plurality of back electrodes connected to the back of the light absorbing layer 120. Examples of the material used as the back electrode layer 110 may include a metal such as molybdenum.

In addition, the back electrode layer 110 may include two or more layers. In this case, each of the layers may be formed of the same metal, or may be formed of different metals.

The light absorbing layer 120 is disposed on the back electrode layer 200. The light absorbing layer 120 includes a group I-III-VI compound. For example, the light absorbing layer 120 may be formed of a copper-indium-gallium-selenide-based (Cu (In, Ga) Se 2 ; CIGS-based) crystal structure, copper-indium-selenide-based, or copper-gallium-selenide It may have a system crystal structure.

The energy band gap of the light absorbing layer 120 may be about 1 eV to 1.8 eV.

In addition, one or more buffer layers 130 and 140 may be disposed between the light absorbing layer 120 and the front electrode layer 150. For example, a buffer layer 130 and a high resistance buffer layer 140 may be interposed between the light absorbing layer 120 and the front electrode layer 150.

The buffer layer 130 is disposed on the light absorbing layer 120. The buffer layer 130 is in direct contact with the light absorbing layer 120. The buffer layer 130 includes cadmium sulfide. The energy bandgap of the buffer layer 130 may be about 1.9 eV to about 2.3 eV.

The front electrode layer 150 is disposed on the high resistance buffer layer 140. The front electrode layer 150 is transparent and is a conductor.

 The front electrode layer 150 includes an oxide. For example, the front electrode layer 150 may include aluminum doped zinc oxide (AZO) or gallium doped zinc oxide (GZO). The front electrode layer 150 may have a thickness of about 800 nm to about 1200 nm.

The solar cells C1, C2, ... Cn are connected in series with each other. In more detail, the solar cells C1, C2... Cn are connected in a second direction. Accordingly, current generated by the solar cells C1, C2... Cn flows in the second direction.

As shown in FIGS. 2 and 3, the first connection part 200 is connected to the solar cells C1, C2... Cn. In more detail, the first connector 200 may be connected to the first solar cell C1 disposed at the outermost of the solar cells C1, C2...

In more detail, the first connector 200 may be connected to the front electrode layer of the first solar cell C1. In more detail, the first connector 200 may be integrally formed with the back electrode layer of the first solar cell C1. In more detail, the first connector 200 is connected to the first solar cell C1 through the connector 160.

In addition, a dummy solar cell Cd is disposed on the first connector 200. The dummy solar cell Cd is not actually generated. In addition, the dummy solar cell Cd may be omitted.

In addition, the first connector 200 may be disposed at an outer side than an area in which the solar cells C1, C2... Cn are disposed.

The first connection member 300 is electrically connected to the solar cells C1, C2... Cn. In more detail, the first connection member 300 may be connected to the first solar cell C1. In more detail, the first connection member 300 may be connected to the first solar cell C1 through the first connection part 200.

The first connection member 300 is disposed on the support substrate 100. In more detail, the first connecting member 300 is disposed on the first connecting portion 200. In more detail, the first connection member 300 may directly contact the upper surface of the first connection portion 200.

The first connection member 300 has magnetic properties. In addition, the first connection member 300 has conductivity. That is, the first connection member 300 may include a magnetic material having conductivity. That is, the second connection member 500 may be a magnet. In more detail, the first connection member 300 may include a ferromagnetic material. Examples of the material used as the first connection member 300 are iron oxides such as Fe 3 O 4 , molybdenum-permalloy, permalloy, sandust (Fe-Si-Al alloy) or iron-silicon An alloy (Fe-Si alloy), and the like. Such materials may be used in the form of soft magnetic powders.

The first connection member 300 extends in the first direction. That is, the first connection member 300 may have a bar shape extending in the first direction. In addition, the first direction may cross with respect to the second direction. In more detail, the first direction may cross perpendicular to the second direction.

The first connection member 300 may be formed by the following process.

A conductor having magnetic properties is applied to the upper surface of the first connection part 200 in the form of a paste or a solution. Thereafter, the coated conductor may be sintered by heat treatment, and the first connection member 300 may be formed.

As shown in FIGS. 2 and 4, the second connector 400 is connected to the solar cells C1, C2... Cn. In more detail, the second connector 400 may be connected to the nth solar cell Cn disposed at the outermost of the solar cells C1, C2... Cn.

In more detail, the second connector 400 may be connected to the back electrode layer of the nth solar cell Cn. In more detail, the second connector 400 may be connected to the bottom surface of the back electrode layer of the nth solar cell Cn. In more detail, the second connector 400 may be a plurality of vias penetrating the support substrate 100. The second connector 400 may be in direct contact with the bottom surface of the back electrode layer of the nth solar cell Cn.

In addition, the first connector 200 may be disposed under the nth solar cell Cn.

The second connection member 500 is electrically connected to the solar cells C1, C2... Cn. In more detail, the second connection member 500 may be connected to the nth solar cell Cn. In more detail, the second connection member 500 may be connected to the nth solar cell Cn through the second connection part 400.

The second connection member 500 is disposed below the support substrate 100. In more detail, the second connection member 500 is disposed below the second connection portion 400. In more detail, the second connection member 500 may directly contact the bottom surface of the second connection part 400.

The second connection member 500 has magnetic properties. In addition, the second connection member 500 has conductivity. That is, the second connection member 500 may include a magnetic material having conductivity. That is, the second connection member 500 may be a magnet. In more detail, the second connection member 500 may include a ferromagnetic material. An example of a material used as the second connection member 500 may be the same as an example of a material used as the first connection member 300.

The second connection member 500 extends in the first direction. That is, the second connection member 500 may have a bar shape extending in the first direction. In addition, the first direction may cross with respect to the second direction. In more detail, the first direction may cross perpendicular to the second direction.

The second connection member 500 may be formed by the following process.

A conductor having magnetic properties is applied to the upper surface of the second connection part 400 and the lower surface of the support substrate 100 in the form of a paste or a solution. Thereafter, the coated conductor may be sintered by heat treatment, and the second connection member 500 may be formed.

In addition, the solar cell panels P may further include a protective layer covering the solar cells C1, C2... Cn. The passivation layer may also cover the bottom surface of the solar cell panel P. In this case, the protective film exposes the first connection member 300 and the second connection member 500 to the outside. That is, the passivation layer may include an open area that exposes the first connection member 300 and the second connection member 500.

Referring to FIG. 5, the solar cell panels P1 and P2 adjacent to each other are connected through the first connection member 300 and the second connection member 501. That is, the second connection member 501 of the first solar cell panel P1 is attached to the first connection member 302 of the second solar cell panel P2 adjacent to the first solar cell panel P1. .

That is, the second connection member 501 of the first solar cell panel P1 and the first connection member 302 of the second solar cell panel P2 are attached to each other by magnetism and electrically connected to each other. Accordingly, the first solar cell panel P1 and the second solar cell are connected in series.

Referring to FIG. 6, the first connection part 200 and the dummy solar cell Cd may be omitted, and the first connection member 301 may be directly connected to the first solar cell C1. That is, the first connection member 301 may be directly bonded to the front electrode 151 of the first solar cell C1 and directly connected to the front electrode 151 of the first solar cell C1. .

Referring to FIG. 7, the second connection part 401 may extend along the side and bottom surfaces of the support substrate 100 without passing through the support substrate 100. In addition, the second connection member 502 may be directly connected to the bottom surface of the second connection portion 401.

The solar cell panel according to the embodiment includes the first connection member 300 and the second connection member 500 having magnetic properties. Accordingly, the solar cell panel according to the embodiment may be attached to or detached from the adjacent solar cell panel by magnetic force.

That is, since the solar cell panel according to the embodiment is easily detachable, the solar cell apparatus according to the embodiment is easy to install and disassemble.

Accordingly, the photovoltaic device according to the embodiment may be stacked and moved and easily installed by stacking a plurality of solar panels in a disassembled state. High portability

In addition, since the solar cell panel according to the embodiment is easily detachable, the solar cell panel may maintain a flat state without bending during movement. Therefore, the solar cell panel according to the embodiment can reduce the damage caused by the bending. That is, the solar cell panel according to the embodiment can prevent performance degradation due to damage and maintain high efficiency.

In addition, the features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in each embodiment may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

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, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (13)

Board;
A first solar cell and a second solar cell disposed on the substrate;
A first connection member electrically connected to the first solar cell and disposed on the substrate and having magnetic properties; And
A second connection member electrically connected to the second solar cell, disposed under the substrate, and having a magnetic property;
The first connecting member or the second connecting member has a bar shape,
And the first connection member and the second connection member are attached to each other. delete delete delete The solar cell panel of claim 1, further comprising a connection part connecting the second solar cell and the second connection member. The solar cell panel of claim 5, wherein the connection part penetrates through the substrate. The solar cell panel of claim 5, wherein the connection part extends from the second solar cell to a side surface of the substrate and a bottom surface of the substrate. The method of claim 1, wherein the second solar cell
A rear electrode layer disposed on the substrate;
A light absorbing layer disposed on the back electrode layer; And
And a front electrode layer disposed on the light absorbing layer,
The second connection member is a solar cell panel connected to the back electrode layer. The solar cell panel of claim 1, wherein the first connection member comprises iron oxide. The method of claim 1, wherein the first solar cell
A rear electrode layer disposed on the substrate;
A light absorbing layer disposed on the back electrode layer; And
And a front electrode layer disposed on the light absorbing layer,
The first connection member is a solar cell panel connected to the front electrode layer. The solar cell panel of claim 10, wherein the first connection member is directly connected to an upper surface of the front electrode layer. A first solar cell panel; And
A second solar cell panel connected to the first solar cell panel,
The first solar cell panel is
A first substrate;
A first solar cell disposed on the first substrate; And
A first connection member electrically connected to the first solar cell and having a magnetic property,
The second solar cell panel
A second substrate;
A second solar cell disposed on the second substrate; And
A second connection member electrically connected to the second solar cell;
The first connecting member or the second connecting member has a bar shape,
And said first connecting member is in direct contact with said second connecting member. 13. The method of claim 12,
The first connecting member is disposed on the first substrate,
The second connecting member is disposed under the second substrate.
KR1020110025030A 2011-03-21 2011-03-21 Solar cell panel and solar cell apparatus having the same KR101210102B1 (en)

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Application Number Priority Date Filing Date Title
KR1020110025030A KR101210102B1 (en) 2011-03-21 2011-03-21 Solar cell panel and solar cell apparatus having the same

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Application Number Priority Date Filing Date Title
KR1020110025030A KR101210102B1 (en) 2011-03-21 2011-03-21 Solar cell panel and solar cell apparatus having the same

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KR101210102B1 true KR101210102B1 (en) 2012-12-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101863773B1 (en) 2018-01-31 2018-06-01 (주)온리정보통신 Solar cell panel and solar cell apparatus having the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006100060A (en) * 2004-09-29 2006-04-13 Matsushita Electric Works Ltd Container for photoelectric conversion element, photoelectric conversion unit, and photoelectric conversion module
JP2011034783A (en) * 2009-07-31 2011-02-17 Toppan Forms Co Ltd Solar cell sheet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006100060A (en) * 2004-09-29 2006-04-13 Matsushita Electric Works Ltd Container for photoelectric conversion element, photoelectric conversion unit, and photoelectric conversion module
JP2011034783A (en) * 2009-07-31 2011-02-17 Toppan Forms Co Ltd Solar cell sheet

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