KR101503893B1 - Photovoltaic connector - Google Patents

Abstract

Provided is a photovoltaic connecting board. The photovoltaic connecting board includes a container; a plurality of ventilation units passing through a part of the container; and an electronic circuit module installed in the container, wherein the electronic circuit module receives a first voltage corresponding to first power, which is collected from at least two solar cell modules connected in series with each other, through a first channel and a second voltage corresponding to second power, which is collected from at least two other solar cell modules connected in series with each other, through a second channel, outputs the second voltage to an inverter, and blocks reverse current generated from the inverter.

Description

{PHOTOVOLTAIC CONNECTOR}

The present invention relates to a photovoltaic module capable of processing electric power produced by a plurality of photovoltaic cell modules without a separate grounding resistance and reducing internal heat by facilitating the inflow of air.

In general, solar power generation systems are being actively researched and developed in advanced countries as a countermeasure against global environmental problems and diversification of future energy sources, owing to the pollution and infinite qualities of solar energy.

The photovoltaic power generation system consists of a photovoltaic cell module that generates power from the sunlight, an inverter that converts DC power to AC power, and a connection panel that supplies DC power generated by the photovoltaic module to the inverter. At this time, in order to generate a large amount of electric power, the connection module constitutes an electric circuit so that a plurality of solar battery modules can be connected in parallel.

The photovoltaic power generation system includes a stand-alone power generation system that stores generated power in a battery and supplies power at a required time in accordance with the utilization method of the developed power, and a grid-connected system that supplies generated power to the load and supplies surplus power to the grid Type power generation system.

In recent years, grid-connected power generation systems have been spreading by minimizing the influence of distributed power systems, protecting system against accidents, and improving control technology of inverters.

The grid-connected power generation system is classified into a series type and a parallel type in which the power generation is based on a 3 KW standard photovoltaic cell module.

On the other hand, the polarity of the DC voltage generated in the solar cell module is divided into + and - voltages. The series type means that the solar cell module is continuously connected with +, -, +, -, +, -, +, -, and the parallel type solar cell module is +, -, +, - Connect the second circuit connected in +, -, +, -, +, -, +, -, +, - with the first circuit connected with +, -, +, - It means to develop by doing.

However, when 12 solar battery modules are connected in series, the open voltage is 400 ~ 456V. According to the electric equipment standard, when the open voltage exceeds 400V, the third type ground (10Ω or less ground) Waste is generated in temporal and manpower side.

Korean Patent No. 10-1253645 (Feb.

An object of the present invention is to provide a photovoltaic connection module capable of processing power produced by a plurality of photovoltaic cell modules without a separate grounding resistance.

It is another object of the present invention to provide a solar light connecting panel that can smoothly flow air to reduce internal heat and prevent foreign substances from entering the interior.

It is still another object of the present invention to provide a photovoltaic module capable of blocking a reverse current generated by an inverter failure.

According to an exemplary embodiment of the present invention, there is provided a photovoltaic panel for supplying power collected from a plurality of photovoltaic modules to an inverter, the photovoltaic panel comprising: a housing; A plurality of ventilation portions formed through a portion of the housing; And at least two solar cells mounted in the housing and receiving a first voltage corresponding to the first power collected in the solar cell module connected in series at least two, And an electronic circuit module receiving the second voltage corresponding to the second power collected by the module and transmitting the received second voltage to the inverter and blocking the reverse current generated in the inverter Can be achieved.

Further, according to the present invention, the housing includes a main body frame having a hollow interior and an open front side; A cover frame openably and closably coupled to a front surface of the main body frame; And an outer louver extending downward from the upper edge of the ventilation portion to the outside of the enclosure.

According to another aspect of the present invention, there is provided an airbag apparatus comprising: an upper camber piece extending upward into an interior of the enclosure with an upward inclination from a lower edge of the ventilator; An extending piece integrally formed on the upper end of the upper thread and extending upward; And an inner louver having a bend stopper at an end of the extension pin.

According to the present invention, the electronic circuit module includes first to fourth input terminals for receiving the first voltage and the second voltage, and first and second output terminals for connecting the input terminal of the inverter A terminal portion; First and second fuse units connected to the first input terminal and the third input terminal; A second fuse unit connected to the second input terminal, the fourth input terminal, and the second output terminal and connected in parallel with the first and second fuse units, the first and second fuse units being turned on or off according to operation states of the first and second fuse units, 1 and a second operating state notification unit; And a second fuse unit receiving the first and second voltages and converting the first and second voltages into a DC voltage and outputting the DC voltage to the inverter via the first output terminal, And a first and a second reverse current protector for blocking application to the photovoltaic module.

Further, according to the present invention, the first and second reverse current-blocking portions are bridge diodes.

According to the photovoltaic module of the present invention, a first voltage corresponding to a first power collected in a solar cell module connected at least two in series is inputted into the first channel, and at least two other solar cells connected in series The second voltage corresponding to the second power collected by the photovoltaic module is input to the second channel and transmitted to the inverter so that the power generated by the plurality of photovoltaic cells can be processed without a separate ground resistance have.

In addition, according to the photovoltaic panel of the present invention, by providing an outer louver extending downward from the upper edge of the ventilation part to the outside of the enclosure, the inflow of air can be smoothly performed to reduce internal heat, So that it can be prevented from flowing inside.

Further, according to the photovoltaic module of the present invention, by providing the inverter with the first voltage and the second voltage according to the power generation of the photovoltaic module, the reverse current generated by the inverter failure can be blocked

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a solar power system to which a solar cell module according to an embodiment of the present invention is applied; FIG.
2 is a perspective view showing a detailed structure of a solar light connecting panel according to an embodiment of the present invention.
3 is a circuit diagram showing an electronic circuit module installed in a solar light connecting panel according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting.

FIG. 1 is a diagram illustrating a solar photovoltaic power system to which a solar photovoltaic module according to an embodiment of the present invention is applied.

1, the solar power generation system may include a solar cell module 100, a plurality of solar cell modules 200 and an inverter 300, and the like.

1, the solar cell module 100 is connected to the solar cell module 200 to integrate the electric power (voltage and current) collected from the solar cell module 200 and supply it to the inverter 300 Lt; / RTI > At this time, the inverter 300 may be connected to an external commercial power line so as to convert DC power into AC power that can be used in the home or to send DC power to the outside (for example, KEPCO).

In addition, the photovoltaic module 100 can process the electric power produced by the plurality of solar cell modules 200 into two channels and supply the electric power to the inverter 300. Specifically, the photovoltaic connection module 100 connects n solar battery modules 200 connected in series through one channel and k solar battery modules 200 connected in series through another channel The power collected from the n + k photovoltaic modules can be processed into two channels.

As described above, it is not necessary to provide a separate grounding resistor because the solar cell 100 provides power generated by the plurality of solar cell modules 200 to the inverter 300 through two channels. However, The optical connector 100 should further include means for preventing reverse current. As the means for preventing the reverse current is added to the solar cell 100, the internal heat generated by the solar cell 100 is worsened, so that the solar cell 100 according to the embodiment of the present invention generates such heat .

The detailed structure of the solar cell 100 will be described with reference to FIG.

2 is a perspective view showing the detailed structure of the solar light connecting panel 100 according to the embodiment of the present invention.

2, the photovoltaic panel 100 may include an enclosure 110 and an electronic circuit module 400 to which a plurality of solar battery modules embedded in the enclosure 110 and the inverter are connected .

2 includes a main body frame 112 having a hollow interior and an open front side, a cover frame 114 openably and closably coupled to the front surface of the main body frame 112, And a plurality of ventilation portions 120 formed to penetrate through the lower portion of the wall.

The body frame 112 and the cover frame 114 may be joined by at least one fastening means 116, for example, four bolts.

The ventilation part 120 facilitates the supply of air to the interior of the enclosure 110 and prevents foreign substances such as rainwater from entering the interior of the enclosure 110.

For this purpose, the ventilation part 120 may include an outer roover 130 connected to the outside of the housing 110 so as to be inclined downward from the upper edge.

The outer louver 130 is provided to prevent foreign substances from outside the air from entering the interior of the enclosure 110. The external louver 130 introduces air into the enclosure 110 through the through passage 122 of the ventilation part 120, It is possible to prevent foreign matter such as foreign matter such as dust or the like from being introduced into the housing 110.

On the other hand, the housing 110 may further include an inner louver 140. The inner louver 140 includes an upwardly inclined warp yarn piece 142 which is inclined upwards from the lower edge of the ventilation part 120 and which extends to the inside of the enclosure 110, an extending piece 144 integrally formed with the upward warp yarn piece and extending upward, And a bending jaw 146 at the end of the piece 144.

The inner louver 140 as described above can prevent foreign matter not blocked by the outer louver 130 from flowing into the enclosure 110. Specifically, the inner louver 140 blocks foreign matter, such as rainwater, which is not blocked by the outer louver 130, by using the upright warp yarn pieces 142 and the extending pieces 144, It is possible to cut off the foreign matter generated in the inside of the housing 110 through the latching jaw 146. Accordingly, the air flows into the interior of the housing 110 through the through passage 122 of the ventilation part 120, the foreign substance is primarily blocked by the external louver 130, and the secondary louver 140 ). ≪ / RTI >

The electronic circuit module 400 receives a first input voltage of DC 200V or more generated from a plurality of solar cell modules 200 connected in series and processes the first input voltage using the first channel, A second input voltage of DC 200 V or more developed in the second inverter 200 may be processed using the second channel and output to the inverter 300.

The electronic circuit module 400 further includes a function of preventing a reverse current generated due to the failure of the inverter 300 from flowing into the solar cell module 200 for each of the first and second channels.

The detailed configuration of the above-described electronic circuit module 400 will be described with reference to FIG.

3 is a detailed circuit diagram of an electronic circuit module 400 according to an embodiment of the present invention.

3, the electronic circuit module 400 includes a terminal portion 410, a first fuse portion 430, a second fuse portion 432, a first operation state notification portion 440, The notification unit 442, and the first and second reverse current protection units 450 and 452.

The terminal unit 410 includes first to fourth input terminals 412, 414, 416 and 418 connected to the plurality of solar cell modules 200, first and second output terminals 420 , 422). The first and third input terminals 412 and 416 are connected to the + pins of the electronic circuit module 400 as positive terminals and the second and fourth input terminals 414 and 420 are connected to the electronic circuit module 400 ) To the - pin. The input voltage developed in the solar cell module 200 through the first to fourth input terminals 412, 414, 416, and 418 may be input to the electronic circuit module 400. Specifically, the first input voltage developed in the plurality of solar cell modules 200 connected in series is input to the electronic circuit module 400 through the first and second input terminals 412 and 414, The second input voltage developed by the plurality of solar cell modules 200 may be input to the electronic circuit module 400 through the third and fourth input terminals 416 and 418.

The first output terminal 420 is connected to the output terminals of the first and second reverse current protection parts 450 and 452 through a power supply line as a positive terminal and the second output terminal 422 is connected to the output terminals of the second and the 4 input terminals 414 and 418, respectively.

The first and second output terminals 420 and 422 are connected to the input terminal of the inverter 300 to supply the voltage output from the first and second reverse current protection parts 450 and 452, ).

The first fuse unit 430 and the second fuse unit 432 are connected to the first and third input terminals 412 and 416 so that an excessive amount of electric power is produced in the solar cell module 200, It is possible to prevent the photovoltaic module 200 from being damaged when the excessive reverse voltage is applied.

The first operating state notification unit 440 is connected in parallel with the first fuse unit 430 and is connected to the second input terminal 414 through a power line so that the first fuse unit 430 is in a lighting state during normal operation The first fuse unit 430 is turned off when the first fuse unit 430 is shut off to inform the first fuse unit 430 that there is an abnormality.

The second operating state notification unit 442 is connected in parallel to the second fuse unit 432 and connected to the fourth input terminal 418 by a power line so that the second fuse unit 432 is in a lighting state during normal operation The second fuse unit 432 is turned off when the second fuse unit 432 is cut off, thereby informing that the second fuse unit 432 is abnormal.

The first and second operating state notification units 440 and 442 may include a resistor and a light emitting diode.

The first and second reverse current protection units 450 and 452 receive the voltage generated from the photovoltaic module 200 through the first fuse unit 430 and the second fuse unit 432 and convert the voltage into a DC voltage To the inverter 300 connected to the first and second output terminals 420 and 422.

The first and second reverse current protection parts 450 and 452 are reverse current protection circuits and are configured such that a reverse current is applied through the first and second output terminals 420 and 422 due to the failure of the inverter 300 The reverse current is not applied to the solar cell module 200.

The first and second reverse current protection units 450 and 452 may be implemented by a bridge diode, but the present invention is not limited thereto.

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, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: solar light connection part 110: enclosure
112; Body frame 114: Cover frame
116: fastening means 120: ventilation part
122: penetrating passage 130: outer louver
140: inner louver 200: solar cell module
300: inverter 400: electronic circuit module
410: terminal portions 430, 432: first and second fuse portions
440, and 442: first and second operating state notification units
450. 452: First and second reverse current protection parts

Claims (5)

A photovoltaic panel for supplying power collected from a plurality of solar cell modules to an inverter,
Enclosure;
A plurality of ventilation portions formed through a portion of the housing; And
A first voltage corresponding to the first power collected in the photovoltaic module connected in series with at least two in series is inputted to the first channel, and at least two other photovoltaic cells And an electronic circuit module for receiving a second voltage corresponding to the second power collected in the second channel and transmitting the received second voltage to the inverter and blocking reverse current generated in the inverter,
The electronic circuit module includes:
A terminal portion including first to fourth input terminals for receiving the first voltage and a second voltage, and first and second output terminals for being connected to an input terminal of the inverter;
First and second fuse units connected to the first input terminal and the third input terminal;
And a second fuse unit connected in parallel with the second input terminal, the fourth input terminal, and the second output terminal, the first fuse unit and the second fuse unit, A first and a second operating state notifying unit to be turned on or off according to the control signal; And
Wherein the first and second fuse units receive the first and second voltages, convert the first and second voltages into DC voltages, and output the DC voltages to the inverter through the first output terminal, And a first reverse current blocking portion for blocking an application to the battery module.
The method according to claim 1,
In the housing,
A main body frame having a hollow interior and an open front side;
A cover frame openably and closably coupled to a front surface of the main body frame; And
And an outer louver extending outwardly of the enclosure so as to be inclined downward from an upper edge of the ventilation part.
3. The method of claim 2,
In the housing,
An upper and lower warp yarns extended upward from the lower edge of the ventilation portion to the inside of the housing;
An extending piece integrally formed on the upper end of the upper thread and extending upward; And
Further comprising an inner louver having a bend stop at an end of the elongated member.
delete The method according to claim 1,
Wherein the first and second reverse current protection portions are bridge diodes.

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