KR20110001823A

KR20110001823A - Solar cell aparatus

Info

Publication number: KR20110001823A
Application number: KR1020090059529A
Authority: KR
Inventors: 배도원
Original assignee: 엘지이노텍 주식회사
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2011-01-06

Abstract

PURPOSE: A solar light-based power generating apparatus is provided to improve the durability of a frame by including an anti-abrasion part which is composed of a charging part and a wiring. CONSTITUTION: A solar cell panel(100) is formed into a plate shape. The solar cell panel includes a plurality of solar units(110). The solar cell panel includes a bus-bar(120) in connection with the solar cell unit. A frame(300) contains the solar cell panel. An anti-corrosion part(400) is composed of a charging part and a wiring. The wiring connects the frame and the charging part. The anti-corrosion part applies electric potential to the frame.

Description

Solar Power Plant {SOLAR CELL APARATUS}

Embodiments relate to a photovoltaic device.

Photovoltaic modules that convert light energy into electrical energy using photoelectric conversion effects are widely used as a means of obtaining pollution-free energy that contributes to the preservation of the global environment.

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

The embodiment is intended to provide a photovoltaic device that prevents corrosion of the frame and has improved durability.

Photovoltaic device according to the embodiment is a solar cell panel; A frame accommodating the solar cell panel; And a corrosion protection unit applying a potential difference to the frame.

The solar cell apparatus according to the embodiment applies a potential difference to the frame to prevent corrosion of the frame.

In particular, when the photovoltaic device is disposed in a coastal area or the like, the frame made of metal or the like can be easily corroded.

At this time, a potential difference for preventing corrosion, that is, a current for preventing corrosion may be applied to the frame, thereby improving durability of the frame.

Therefore, the solar cell apparatus according to the embodiment has improved durability.

In the description of the embodiments, each panel, bar, frame, substrate, part or wiring is formed on or under the "on" of each panel, bar, substrate, part or wiring. In the case described, "on" and "under" include both those that are formed "directly" or "indirectly" through other components. In addition, the criteria for the top or bottom of each component will be described based on 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.

Referring to FIG. 1, a photovoltaic device according to an embodiment includes a solar cell panel 100, a diode 200, a frame 300, and a corrosion protection unit 400.

The solar cell panel 100 has a plate shape. For example, the solar cell panel 100 has a rectangular plate shape.

The solar cell panel 100 is disposed inside the frame 300. In more detail, an outer region of the solar cell panel 100 is disposed inside the frame 300. That is, four side surfaces of the solar cell panel 100 are disposed inside the frame 300.

The solar cell panel 100 receives sunlight and converts it into electrical energy. The solar panel 100 includes a plurality of solar cells 110. In addition, the solar cell panel 100 may further include a substrate, a film, or a protective glass for protecting the solar cell 110.

In addition, the solar panel 100 includes a bus bar 120 connected to the solar cells 110. The bus bars 120 extend from upper surfaces of the outermost solar cells and are connected to the wiring 210.

The diode 200 is connected in parallel with the solar cell panel 100. Selective current flows through the diode 200.

That is, when the performance of the solar cell panel 100 is degraded, current flows through the diode 200. Accordingly, the short circuit of the photovoltaic device itself according to the embodiment is prevented.

The wiring 210 is connected to the diode 200 and the solar panel 100. The wiring 210 connects the solar cell panels 100 adjacent to each other.

The frame 300 accommodates the solar cell panel 100. The frame 300 is made of metal. For example, the frame 300 may be made of aluminum.

The frame 300 is disposed on the side of the solar cell panel 100. The frame 300 accommodates side surfaces of the solar cell panel 100.

As shown in FIG. 1, the frame 300 may include a plurality of subframes. In this case, the subframes may be connected to each other.

The corrosion prevention unit 400 applies a potential difference for preventing corrosion to the frame 300. For example, the corrosion protection unit 400 may apply a voltage of about -80 mV to about -120 mV to the frame 300. In more detail, the corrosion protection unit 400 may apply a potential difference of about −95 mV to about −105 mV to the frame 300.

The corrosion preventing unit 400 may store electric energy generated from the solar cell panel 100 and apply a potential difference to the frame 300.

The corrosion prevention part 400 includes a charging part 401 and a titanium electrode 410.

The charging unit 401 may be connected to the solar cell panel 100 in parallel. The charging unit 401 stores some of the electrical energy generated from the solar cell panel 100. The charging unit 401 may be connected to the solar cell panel 100 in parallel.

The charging unit 401 may include a rectifier circuit for rectifying the current generated from the solar cell panel 100 and a storage battery for storing the rectified current.

The charging unit 401 may further include a switching circuit that blocks a current flowing from the solar cell panel 100 after charging a predetermined amount of electrical energy.

The negative electrode (-) of the charging unit 401 is connected to the frame 300 through the titanium electrode 410. In more detail, the negative electrode (-) of the charging unit 401 is connected to the titanium electrode 410, and the titanium electrode 410 is connected to one of the subframes. Since the subframes are connected to each other, even when the cathode (−) is connected to one subframe, a potential difference is formed in the entire frame 300.

The positive electrode (+) of the charging unit 401 is directly connected to the frame.

The titanium electrode 410 is directly connected to the frame 300. The titanium electrode 410 includes titanium coated with metal oxide.

Accordingly, a negative potential difference is formed in the frame 300. That is, as described above, a voltage of about -80 mV to about -120 mV may be applied to the frame 300. In more detail, a potential difference of about −95 mV to about −105 mV may be applied to the frame 300.

The photovoltaic device according to the embodiment applies a negative potential difference to the frame 300 to prevent corrosion of the frame 300.

In particular, when the photovoltaic device is disposed in a coastal area or the like, the frame 300 made of metal or the like can be easily corroded.

In this case, a potential difference for preventing corrosion, that is, a current for preventing corrosion may be applied to the frame 300 to improve durability of the frame 300.

2 is a view showing a solar cell apparatus according to another embodiment. In this embodiment, with reference to the above-described embodiment, the corrosion preventing unit will be further described. In the description of this embodiment, the description of the previous embodiment can be essentially combined, except for the changed part.

Referring to FIG. 2, the solar cell panel 100 includes an active region AR in which main solar cells 110 are disposed and an inactive region NAR around the active region AR. The inactive region NAR surrounds the active region AR.

The corrosion protection part 402 includes sub solar cell cells 130 disposed in the inactive region NAR.

The sub solar cells 130 are disposed on a substrate of the solar cell panel 100. Sikic sub solar cells 130 have a lower output than the main solar cells 110. For example, the sub solar cells 130 may have an output of about 1% to 60% compared to the main solar cells 110.

That is, the sub solar cells 130 may have a current intensity of about 1% to about 60% compared to the main solar cells 110 having the same area.

The sub solar cells 130 may be formed using a layer that is removed by a process such as edge deletion in the process of forming the main solar cells 110.

That is, in the process of forming the main solar cells 110, a plurality of layers are formed on the substrate, and a portion of the region where the layers are formed, which cannot implement a normal output, is removed.

In this case, an area in which normal output cannot be realized is not removed and may be used to form the sub solar cells 130.

The sub solar cells 130 are connected to the frame 300. In more detail, the negative electrode (−) of the sub solar cells 130 is connected to the frame 300 through the titanium electrode 410. In addition, the positive electrode (+) of the sub solar cells 130 is connected to the frame 300.

In more detail, the titanium electrode 410 and the sub solar cells 130 are connected through a first sub bus bar 420 connected to the negative electrode (−) of the sub solar cells 130.

Similarly, the anode (+) of the sub solar cells 130 and the frame 300 are connected through a second sub bus bar 430 connected to the anode (+) of the sub solar cells 130. do.

In addition, the sub solar cells 130 may be connected in series with each other.

The photovoltaic device according to the present exemplary embodiment applies a negative potential difference to the frame 300 by using the sub solar cells 130 disposed in a discarded area of the solar cell panel 100.

Therefore, the solar cell apparatus according to the present embodiment may prevent corrosion of the frame 300 without affecting power production.

In addition, when the solar cell apparatus according to the present embodiment is disposed in the coastal region, the frame 300 may be more corroded because the sea breeze blows during the daytime, that is, the wind blows from the sea.

In this case, the sub solar cells 130 apply a negative potential difference to the frame 300 by using sunlight, and prevent corrosion of the frame 300.

In addition, the sub solar cells 130 do not generate power during the night time, but because the main wind blows during the night time in the coastal area, the frame 300 is not easily corroded.

Therefore, the solar cell apparatus according to the present embodiment can easily protect the frame 300 from corrosion in the coastal region.

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, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

Although described above with reference to the embodiment is only an example and is not intended to limit the invention, those of ordinary skill in the art to which the present invention does not exemplify the above within the scope not departing from the essential characteristics of this embodiment It will be appreciated that many variations and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1 is a view showing a photovoltaic device according to an embodiment.

2 is a view showing a solar cell apparatus according to another embodiment.

Claims

Solar panel;

A frame accommodating the solar cell panel; And

A photovoltaic device comprising a corrosion protection unit for applying a potential difference to the frame.

The method of claim 1, wherein the corrosion protection portion

A charging unit for storing electrical energy generated from the solar cell panel; And

The photovoltaic device comprising a wire connecting the frame and the charging unit.

The solar cell apparatus of claim 1, wherein the potential difference is -80 mV to -120 mV.

The method of claim 2, wherein the corrosion protection portion

It is connected to the negative electrode of the charging unit, and includes an electrode in contact with the frame,

The anode of the charging unit is connected to the frame photovoltaic device.

The method of claim 1, wherein the solar panel comprises a plurality of main solar cells defining an active region,

The corrosion preventing unit includes a sub solar cell disposed in an inactive region formed around the active region.

The method of claim 5, wherein the corrosion protection portion

A electrode connected to a cathode of the sub solar cells and contacting the frame;

The anode of the sub solar cells are connected to the frame.

The solar cell apparatus of claim 6, wherein the electrode comprises titanium.