KR101306411B1

KR101306411B1 - Solar cell module

Info

Publication number: KR101306411B1
Application number: KR20110121869A
Authority: KR
Inventors: 이승엽
Original assignee: 엘지이노텍 주식회사
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2013-09-09
Also published as: KR20130056110A

Abstract

The solar cell module according to the embodiment includes a substrate; A solar cell panel disposed on an upper surface of the substrate and including a plurality of solar cells; A bus bar connected to one of the solar cells, the bus bar being positioned on the solar cell panel, and a groove located at an edge of the substrate.

Description

Solar cell module {SOLAR CELL MODULE}

An embodiment relates to a solar cell module.

Photovoltaic modules that convert light energy into electrical energy using photovoltaic conversion effects are widely used as means for obtaining pollution-free energy contributing to conservation of the global environment.

As the photovoltaic conversion efficiency of solar cells is improved, many photovoltaic power generation systems equipped with photovoltaic power generation modules have been installed for residential use.

In order to output electric power generated from a solar power generation module having a solar cell that generates power from daylight to the outside, conductors serving as both electrodes and negative electrodes are disposed in the solar power generation module, The ends of the conductors are taken out of the photovoltaic module.

Meanwhile, in order to connect the bus bar to the junction box, a hole must be provided in the lower substrate. Due to this hole, the lower substrate may be broken by various variables such as high temperature during the process of the solar cell module. In addition, there is a problem that a hole processing machine for forming a hole in the lower substrate is required, which increases process time and process cost.

Embodiments provide a solar cell module having improved robustness and reliability.

The solar cell module according to the embodiment may be connected to a connection member positioned on the lower surface of the lower substrate without forming a hole in the lower substrate. Through this, during the process of the solar cell module, it is possible to prevent the breakage of the lower substrate due to various variables such as high temperature. Therefore, process yield can be improved. In addition, by eliminating the hole processing machine for forming holes in the lower substrate, it is possible to reduce the process time and the process cost.

1 is an exploded perspective view illustrating a solar cell module according to an embodiment.
2 is a perspective view illustrating a front surface of a solar cell panel according to an embodiment.
3 is a perspective view illustrating a bottom surface of the solar cell panel according to the embodiment.

In the description of embodiments, each layer, region, pattern, or structure may be “on” or “under” the substrate, each layer, region, pad, or pattern. Substrate formed in ”includes all formed directly or through another layer. The criteria for top / bottom or bottom / bottom of each layer are described with reference to the drawings.

The thickness or the size of each layer (film), region, pattern or structure in the drawings may be modified for clarity and convenience of explanation, and thus does not entirely reflect the actual size.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, a solar cell module according to an embodiment will be described with reference to FIGS. 1 to 3. 1 is an exploded perspective view showing a solar cell module according to an embodiment. 2 is a perspective view illustrating a front surface of a solar cell panel according to an embodiment. 3 is a perspective view illustrating a bottom surface of the solar cell panel according to the embodiment.

1 to 3, a solar cell module according to an embodiment includes a lower substrate 100, a solar cell panel 200, an upper substrate 300, a buffer sheet 400, a bus bar 500, and a connection member. 600 and cable 700.

The lower substrate 100 is located at the bottom of the solar cell module. The lower substrate 100 may support the solar cell panel 200.

The lower substrate 100 is transparent and has high strength. Examples of the material used for the lower substrate 100 include tempered glass.

The lower substrate 100 includes an upper surface 101 and a lower surface 102 opposite to each other.

The lower substrate 100 includes at least one groove 100a. The lower substrate 100 may include two grooves 100a.

The groove 100a is positioned at the edge 100b of the lower substrate 100. Specifically, the groove 100a contacts the edge 100b of the lower substrate 100. That is, a part of the groove 100a is exposed to the outside at the edge 100b of the substrate. That is, the groove 100a is distinguished from a hole drilled in the lower substrate 100.

The bus bar 500 may be connected to the connection member 600 through the groove 100a. That is, the bus bar 500 penetrates the groove 100a.

Subsequently, the solar cell panel 200 is positioned on the upper surface 101 of the lower substrate 100.

The solar cell panel 200 has a plate shape and includes a plurality of solar cells 210.

The solar cells 210 may be, for example, CIGS-based solar cells, silicon-based solar cells, fuel-sensitized solar cells, II-VI compound semiconductor solar cells, or III-V compound semiconductor solar cells.

In addition, the solar cells 210 may be disposed on a transparent substrate such as a glass substrate.

The solar cells 210 may be arranged in a stripe shape. In addition, the solar cells 210 may be arranged in various forms such as a matrix form.

The protective substrate 300 is disposed on the solar cell panel 200. In more detail, the protective substrate 300 is disposed to face the solar cell panel 200.

The protective substrate 300 is transparent and has a high strength. Examples of the material used as the protective substrate 300 may include tempered glass.

The buffer sheet 400 is interposed between the protective substrate 300 and the solar cell panel 200. The buffer sheet 400 protects the solar cell panel 200 from an external physical shock. In addition, the buffer sheet 400 prevents a collision between the protective substrate 300 and the solar cell panel 200.

The buffer sheet 400 may perform an anti-reflection function so that more light is incident on the solar cell panel 200.

Examples of the material used as the buffer sheet 400 include ethylene vinyl acetate resin (EVA resin).

The bus bar 500 is disposed on the solar cell panel 200. The bus bar 500 contacts the top surface 101 of two of the solar cells 210 and is electrically connected to the solar cells 210.

For example, the bus bar 500 includes a first bus bar 510 and a second bus bar 520.

The first bus bar 510 contacts the top surface of the solar cell 211 at one end of the solar cells 210, and the second bus bar 520 is the other of the solar cells 210. In contact with the top of the solar cell 212 of the end.

The bus bar 500 is a conductor, and examples of the material used for the bus bar 500 include copper and the like.

The bus bar 500 extends from the upper surface 101 of the lower substrate 100 to the edge 100b of the lower substrate 100. In addition, the bus bar 500 penetrates the groove 100a positioned at the edge 100b of the lower substrate 100. In addition, the bus bar 500 may be connected to the connection member 600 positioned on the bottom surface 102 of the lower substrate 100.

The connection member 600 is located on the bottom surface 102 of the lower substrate 100. The connection member 600 may be located at the edge 100b of the lower substrate 100. The connection member 600 may connect the bus bar 500 and the cable 700. The connection member 600 may be a junction box.

The cable 700 is electrically connected to the solar cell panel 200 through the connection member 600 and the bus bar 500. That is, the cable 700 transmits electrical energy generated from the solar cell panel 200 to a rectifier and / or a power storage device.

In addition, the cable 700 may be connected to an adjacent solar cell module. That is, a plurality of solar cell modules may be connected to each other by a cable 700.

The cable 700 may be connected to the connection member 600 by solder paste or the like.

The solar cell module according to the embodiment may be connected to the connection member 600 positioned on the lower surface 102 of the lower substrate 100 without forming a hole in the lower substrate 100. Through this, during the process of the solar cell module, it is possible to prevent the breakage of the lower substrate 100 due to various variables such as high temperature. Therefore, process yield can be improved. In addition, by removing the hole processing machine for forming a hole in the lower substrate 100, the process time and the process cost can be reduced.

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in 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 clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Claims

Board;
A solar cell panel disposed on an upper surface of the substrate and including a plurality of solar cells;
A bus bar connected to one of the solar cells and positioned on the solar cell panel,
Grooves are located at the edge of the substrate,
Further comprising a connection member for connecting the bus bar and the cable,
The connection member and the cable is a solar cell module located on the lower surface of the substrate.

The method of claim 1,
The groove is in contact with the edge of the substrate solar cell module.

The method of claim 1,
A portion of the groove is a solar cell module exposed to the outside from the edge of the substrate.

The method of claim 1,
The bus bar is a solar cell module penetrating the groove.

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