KR20130049123A

KR20130049123A - Solar apparatus

Info

Publication number: KR20130049123A
Application number: KR1020110114190A
Authority: KR
Inventors: 신민정; 권세한
Original assignee: 엘지이노텍 주식회사
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2013-05-13

Abstract

PURPOSE: A photovoltaic power generation device is provided to prevent efficiency reduction due to heat and to improve photoelectric conversion efficiency, durability, and reliability. CONSTITUTION: A solar cell panel(100) includes solar cells(120). A protection substrate(200) faces the solar cell panel. A buffer sheet(300) protects the solar cell panel from a physical impact. An encapsulation part(400) seals a gap between the solar cell panel and the protection substrate. A heat radiation part(500) emits the heat of the solar cell panel to the outside.

Description

[0001] SOLAR APPARATUS [0002]

An embodiment relates to a photovoltaic device.

Photovoltaic devices for converting sunlight into electrical energy include solar panels, diodes and frames.

The solar cell panel has a plate shape. For example, the solar cell panel has a rectangular plate shape. The solar cell panel is disposed inside the frame. Four side surfaces of the solar cell panel are disposed inside the frame.

The solar cell panel receives sunlight and converts it into electrical energy. The solar panel includes a plurality of solar cells. In addition, the solar cell panel may further include a substrate, a film or a protective glass for protecting the solar cells.

The solar panel also includes a bus bar connected to the solar cells. The bus bars extend from upper surfaces of the outermost solar cells and are connected to the wiring.

The diode is connected in parallel with the solar cell panel. Selective current flows through the diode. That is, when the performance of the solar cell panel is degraded, current flows through the diode. Accordingly, the short circuit of the photovoltaic device itself according to the embodiment is prevented. In addition, the photovoltaic device may further include a wire connected to the diode and the solar cell panel. The wiring connects adjacent solar cell panels.

The frame accommodates the solar cell panel. The frame is made of metal. The frame is disposed on the side of the solar cell panel. The frame accommodates side surfaces of the solar cell panel. In addition, the frame may include a plurality of subframes. In this case, the subframes may be connected to each other.

Such a photovoltaic device is mounted outdoors to convert sunlight into electrical energy. At this time, the photovoltaic device may be exposed to an external physical shock, an electric shock, and a chemical shock.

The technology related to such a photovoltaic device is described in Korean Patent Publication No. 10-2009-0059529.

Embodiments provide a photovoltaic device having improved efficiency and reliability.

Photovoltaic device according to the embodiment is a solar cell panel; And a heat dissipation member disposed under the solar cell panel, wherein the heat dissipation member includes a base layer disposed on a bottom surface of the solar cell panel; And a plurality of heat dissipation wires protruding downward from the base layer.

The solar cell apparatus according to the embodiment may effectively release heat generated from the solar cell panel through the base layer and the heat dissipation wires. In particular, the heat dissipation wires may be flexible. In this case, the heat dissipation wires may be formed long. That is, even if the heat radiation wires are formed long, because the flexible, the solar cell apparatus according to the embodiment can be easily transported and installed.

As such, since the heat radiation wires are formed to be long, the solar cell apparatus according to the embodiment may effectively emit heat of the solar cell panel.

In addition, the heat radiation wires may be shaken by external wind. Accordingly, air can effectively pass between the heat dissipation wires, and the solar cell apparatus according to the embodiment may have improved heat dissipation characteristics.

Therefore, the photovoltaic device according to the embodiment may prevent the efficiency decrease due to heat, and may have improved photoelectric conversion efficiency, durability, and reliability.

1 is an exploded perspective view showing a photovoltaic device according to an embodiment.
2 is a perspective view illustrating a rear surface of the solar cell apparatus according to the embodiment.
3 is a cross-sectional view showing a cross section of the solar cell apparatus according to the embodiment.

In the description of the embodiments, each panel, bar, frame, substrate, groove, or film is formed on or under the "on" of each panel, bar, substrate, groove, or film. In the case described, "on" and "under" include both those that are formed "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 to 3, a solar cell module according to an embodiment includes a solar cell panel 100, a protective substrate 200, a buffer sheet 300, a sealing part 400, and a heat dissipation part 500. .

The solar cell panel 100 has a plate shape and includes a plurality of solar cells 120.

The solar cells 120 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 120 may be disposed on a transparent substrate 110 such as a glass substrate.

The solar cells 120 may be arranged in a stripe shape. In addition, the solar cells 120 may be arranged in various forms such as a matrix form. The solar cells 120 may be connected in series or in parallel with each other.

The protective substrate 200 is disposed on the solar cell panel 100. In more detail, the protective substrate 200 is disposed to face the solar cell panel 100.

The protective substrate 200 is transparent and has a high strength. Examples of the material used as the protective substrate 200 may include tempered glass.

The buffer sheet 300 is interposed between the protective substrate 200 and the solar cell panel 100. The buffer sheet 300 protects the solar cell panel 100 from an external physical shock. In addition, the buffer sheet 300 prevents a collision between the protective substrate 200 and the solar cell panel 100.

In addition, the buffer sheet 300 may cover the solar cells 120. The buffer sheet 300 may seal the solar cells 120 from the outside. The buffer sheet 300 may protect the solar cells 120 from an external chemical shock.

The buffer sheet 300 may perform an anti-reflection function so that more light is incident on the solar cell panel 100.

The buffer sheet 300 may include an insulator. In more detail, the buffer sheet 300 may be made of an insulator. Examples of the material used as the buffer sheet 300 include ethylene vinyl acetate resin (EVA resin). That is, the buffer sheet 300 is an insulating layer.

The sealing part 400 is disposed outside the solar cell panel 100. The sealing part 400 is interposed between the solar cell panel 100 and the protective substrate 200. The sealing part 400 may directly contact the solar cell panel 100 and the protective substrate 200. The sealing unit 400 may surround the buffer sheet 300. The sealing part 400 may have a closed loop shape.

Examples of the material used for the sealing part 400 include butyl rubber and the like.

The sealing part 400 seals between the solar cell panel 100 and the protective substrate 200. The sealing part 400 is firmly bonded to the outside of the solar cell panel 100 and the protective substrate 200.

In addition, the solar cell apparatus according to the embodiment may further include a prem. The frame 100 is disposed outside the solar cell panel 100. The frame 100 accommodates the solar cell panel 100, the protective substrate 200, the buffer sheet 300, and the electric shock protective layer 500. In more detail, the frame 100 surrounds the side surface of the solar cell panel 100. The protective substrate 200, the buffer sheet 300, and the sealing part 400 may be disposed inside the frame 100.

In addition, the solar cell apparatus according to the embodiment may include wires connected to the solar cells 120 and connected to an external charging device or another solar cell module. In addition, the photovoltaic device may further include bus bars for connecting the wirings and the solar cells 120 to each other.

The heat dissipation part 500 is disposed under the solar cell panel 100. The heat dissipation unit 500 may directly contact the bottom surface of the solar cell panel 100. The heat dissipation unit 500 may emit heat of the solar cell panel 100 to the outside.

The heat dissipation part 500 may include a base layer 510 and a plurality of heat dissipation wires 520. The base layer 510 and the heat dissipation wires 520 may be integrally formed with each other. In addition, the base layer 510 and the heat dissipation wires 520 may be entirely formed of a polymer.

In this case, the base layer 510 and the heat dissipation wires 520 may further include heat conductive particles 530 uniformly dispersed in the polymer. The thermally conductive particles 530 include a metal or a metal compound. In more detail, the thermally conductive particles 530 may include a metal such as aluminum, silver, copper, or iron. In addition, the thermally conductive particles 530 may include a metal oxide such as titanium oxide. Accordingly, the thermally conductive particles 530 may have a higher thermal conductivity than the polymer. As a result, the thermally conductive particles 530 may improve the overall thermal conductivity of the heat dissipation unit 500. Accordingly, the heat dissipation part 500 may have a high thermal conductivity while being an insulator as a whole.

The base layer 510 is entirely formed on the bottom surface of the solar cell panel 100. The base layer 510 is overall bonded or bonded to the bottom surface of the solar cell panel 100. The base layer 510 may directly contact the bottom surface of the solar panel. The base layer 510 may have a thickness of about 0.5 mm to about 5 mm.

The heat dissipation wires 520 are disposed under the base layer 510. The heat dissipation wires 520 protrude downward from the base layer 510. The heat dissipation wires 520 may have a shape extending downward.

Since the heat dissipation wires 520 are mainly formed of a polymer, they may have elasticity. The heat dissipation wires 520 are flexible. That is, the heat dissipation wires 520 may be bent by an external impact and then restored to an original state.

The length L of the heat dissipation wires 520 may be about 4 cm to about 6 cm. In addition, the diameter R of the heat dissipation wires 520 may be about 0.3 cm to 1 cm. In addition, the distance D between the heat dissipation wires 520 may be about 5 cm to about 2 cm.

The heat dissipation wires 520 may be bent by the flow of external air. That is, the heat dissipation wires 520 may be bent by wind or the like.

As described above, the solar cell apparatus according to the embodiment may effectively release heat generated from the solar cell panel 100 through the base layer 510 and the heat dissipation wires 520. In particular, the heat dissipation wires 520 may be flexible.

In this case, the heat dissipation wires 520 may be formed long. That is, even if the heat dissipation wires 520 are formed long, since the heat dissipation wires 520 are flexible, the heat dissipation wires 520 are not broken or damaged. Accordingly, the solar cell apparatus according to the embodiment can be easily transported and installed.

As described above, since the heat dissipation wires 520 are formed to be long, the solar light emitting device according to the embodiment may effectively emit heat of the solar cell panel 100.

In addition, the heat dissipation wires 520 may be shaken by external wind. Accordingly, air can effectively pass between the heat dissipation wires 520, and the solar cell apparatus according to the embodiment may have improved heat dissipation characteristics.

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 the embodiments 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

Solar panel; And
A heat dissipation member disposed under the solar cell panel,
The heat-
A base layer disposed on a bottom surface of the solar cell panel; And
A photovoltaic device comprising a plurality of heat dissipation wires protruding downward from the base layer.

The solar cell apparatus of claim 1, wherein the heat dissipation wires are flexible.

The solar cell apparatus of claim 1, wherein the base layer and the heat dissipation wires are integrally formed with each other.

The solar cell apparatus of claim 1, wherein the base layer and the heat dissipation wires comprise a polymer.

The photovoltaic device of claim 4, wherein the base layer and the heat dissipation wires include a plurality of heat conducting particles disposed in the polymer.

The solar cell apparatus of claim 5, wherein the thermally conductive particles comprise a metal or a metal compound.

The photovoltaic device of claim 6, wherein the thermally conductive particles comprise a metal oxide.

The photovoltaic device of claim 1, wherein a length of the heat dissipation wires is 4 cm to 6 cm, and a diameter of the heat dissipation wires is 0.3 cm to 1 cm.

The photovoltaic device of claim 8, wherein a distance between the heat dissipation wires is 0.5 cm to 2 cm.

The solar cell apparatus of claim 1, wherein the base layer is in direct contact with a bottom surface of the solar cell panel.