KR101616394B1 - Connector band for photovoltaic power system - Google Patents

Abstract

The present invention relates to a solar power generation system and, more specifically, to a photovoltaic junction box installed between a solar cell panel and an inverter for power generation, which are main configuration devices of the solar power generation system, and used as a protection module between the solar cell panel and the inverter. According to the present invention, the photovoltaic junction box is formed in a structure where electrical components of the photovoltaic junction box are connected to a copper plate terminal, which is not burnt, thereby fundamentally preventing fire from being largely spread by the copper plate terminal which is not burnt even though the fire occurs since the electrical components are exploded due to overheat.

Description

CONNECTOR BAND FOR PHOTOVOLTAIC POWER SYSTEM

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation system, and more particularly, to a photovoltaic power generation system provided between a photovoltaic cell panel, which is a main constituent device of a photovoltaic power generation system, To an optical connection panel.

Generally, solar power generation system does not require any additional fuel because it uses solar energy. Therefore, it is not environmentally friendly because there is no air pollution or waste, and it is easy to automate or automate the system, Can be minimized. In addition, the peak power generation time is similar to the summer peak power consumption time, so it is possible to solve the imbalance in power supply and demand during power operation and housing construction for power and residential buildings. And it is attracting attention as a power supply source that can efficiently use shortage resources.

Such a photovoltaic power generation system converts light energy incident from the sun into electric energy, collects and stores the converted electric energy, converts the electric energy converted into direct current into AC energy at the collection stage, In order to prevent unbalanced characteristics of the solar cell module due to other factors such as a damage to the circuit due to an electric shock caused by an unexpected sudden voltage or current, or a change in the surrounding environment, as a protection module between the solar cell module and the power generating inverter A solar connection panel is installed.

FIG. 1 is an equivalent circuit diagram for explaining a configuration of a general photovoltaic connection module.

Referring to FIG. 1, the photovoltaic panel 10 serves to transmit the power supplied from the solar cell panel to the inverter. In this case, when the power received from the solar cell panel is surge power, in order to prevent damage to the inverter and damage to each of the loads supplied with the power generated by the solar cell panel, And serves to shut off power to prevent power from being passed to the inverter and / or to each load.

1, the photovoltaic panel 10 includes an input terminal, a diode 11, a fuse 12, a resistor 13, an LED (Light-Emitting Diode) 14, and an output terminal ). A diode 11 for preventing a reverse voltage, a fuse 12 for preventing an overcurrent, a resistor 13, and a resistor 14 are formed on a printed circuit board (not shown) And an LED 14 for indicating whether or not the fuse 12 is disconnected. Here, the fuse as the overcurrent prevention means is replaceably installed, and if the fuse is disconnected due to the occurrence of the overcurrent, the operator who senses the fuse is replaced with a new one.

However, in the solar light connecting panel 10 according to the related art, due to the surge voltage, a fire occurs in the electric components inside the solar light connecting panel, particularly the diode 11 and the fuse 12, A fire is generated due to burning due to the high temperature heat of the electrical components, or a fire occurs due to an arc or a spark caused by penetration of external moisture into electric parts. .

In order to prevent a fire from occurring inside the solar cell module, it has been proposed to use a fire extinguisher, Korean Patent Publication No. 10-2015-0043184 (Publication Date: Apr. 21, 2015), Korean Registered Patent No. 10-0930132 (Registered Date: Nov. 27, 2009), Korean Registered Patent No. 10-1381051 (Registered Date: Apr. ) Have been proposed.

The foregoing prior arts have largely prevented the fire of solar photovoltaic modules by providing an electrical fire surveillance diagnostic which detects the gas concentration and temperature inside the solar photovoltaic module and monitors the voltage and current flowing through the electrical components of the solar photovoltaic module, It is necessary to additionally provide an electric fire surveillance diagnosis inside and outside the solar light connection panel, which causes the manufacturing cost to increase due to the complicated structure. In addition, although the electric fire monitoring diagnosis can prevent the secondary fire from spreading, there is a limitation in preventing the occurrence of fire in the photovoltaic connection plate due to penetration of foreign substances such as fine dust and moisture and the like .

Further, in the above-mentioned prior art documents, when a fuse is used as an overcurrent prevention means, a worker manually changes a fuse by himself or herself during a fuse replacement operation. In this process, when an operator takes a fuse directly by hand, If you do not pay attention during the process of catching, there is a possibility of electric shock accident. It is necessary to remove or install a fuse with a thumb and index finger in a small space of 3 ~ 4cm in length and 1cm in diameter. There is a problem that it is considerably inconvenient.

KR 10-1533439 B1, 2015. 06. 26. KR 10-2015-0078393 A, Jul. KR 10-2015-0043184 A, 2015 04. 22. KR 10-0930132 B1, Nov. 27, 2009. KR 10-1381051 B1, 2014. 03. 27.

Accordingly, the present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a fire alarm system, which is one of fire ignition points, So that the occurrence of fire can be prevented effectively.

According to one aspect of the present invention, there is provided a solar cell module comprising: a solar cell module having a rod shape and being electrically connected to a first output terminal of the solar cell panel to transmit electric power supplied from a first output terminal of the solar cell panel; 1 copper plate terminal; A second copper plate terminal formed in a bar shape and electrically connected to a second output terminal of the solar cell panel to transmit power supplied from a second output terminal of the solar cell panel; A third copper plate terminal for transmitting the electric power delivered to the output terminal of the second copper plate terminal; A reverse voltage prevention diode electrically connected between the second and third copper plate terminals; A resistor whose one end is electrically connected to the first copper plate terminal; And a lamp connected to the other end of the resistor and electrically connected between the third copper plate terminals.

Preferably, the first and third copper plate terminals are electrically connected to the output terminals of the first and third copper plate terminals to transmit power output from the output terminals of the first and third copper plate terminals to the inverter, and when the leakage current, And a breaker for interrupting electric power output from the output terminal of the three copper plate terminals to the inverter.

Preferably, the power output from the output terminals of the first and third copper plate terminals is electrically connected to the output terminals of the first and third copper plate terminals and is transmitted to the inverter. When the overvoltage or overcurrent is generated, And a fuse that cuts off power output from the output terminal of the copper plate terminal to the inverter.

Preferably, the other end of the first copper plate terminal except the input end and the output end thereof, the input end of the second copper plate terminal and the output end of the third copper plate terminal, and the reverse voltage prevention diode, the resistor, And may further include a molding housing.

Preferably, the second copper plate terminals are arranged on a horizontal line with the first copper plate terminals, the input terminals of the third copper plate terminals are aligned with each other in the vertical direction with respect to the output terminals of the second copper plate terminals, Terminal and a horizontal line.

Preferably, the reverse voltage prevention diode includes first and second terminals, wherein the first terminal is formed with a thread on an outer circumferential surface thereof, passes through an output terminal of the second copper plate terminal, and electrically connected to the second copper plate terminal through a nut And the second terminal is electrically connected to the groove formed in the input terminal of the third copper plate terminal by forming a screw thread on the outer circumferential surface.

The heat sink may further include a heat sink coupled to an upper surface of the first to third copper plate terminals to discharge heat generated from the reverse voltage prevention diode to the outside.

As described above, according to the present invention, the following effects can be obtained.

 First, according to the present invention, the photovoltaic connection panel is not made up of a structure in which electrical parts including a reverse voltage prevention diode are mounted on a printed circuit board like a solar photovoltaic panel according to the related art, Terminal, it is possible to prevent the fire from diffusing extensively to the outside due to the unburned copper plate terminal even if a fire occurs due to the explosion due to overheating of the electric components, in particular, the reverse-voltage prevention diode.

Secondly, according to the present invention, electric parts formed on the terminal portion for transmitting the power supplied from the solar cell panel to the inverter are covered and protected by the molding housing, so that foreign substances such as fine dust and moisture are introduced into the electric components Thereby preventing foreign substances and moisture from penetrating into the electrical components and causing a fire.

Thirdly, according to the present invention, a solar light connection panel is not mounted on a printed circuit board together with other electric components, such as a solar light connection panel according to the related art, It can be installed independently via a cable or by using a breaker instead of a fuse to prevent fires.

1 is an equivalent circuit diagram showing a configuration of a general solar light connecting panel.
2 and 3 are perspective views showing a solar light connecting panel according to an embodiment of the present invention;
3 is a perspective view showing a terminal portion of the solar photovoltaic panel shown in Fig.
4 is a perspective view showing a one-channel terminal portion.
5 is an exploded perspective view of the one-channel terminal portion shown in FIG.
FIG. 6 is a side view of the one-channel terminal shown in FIG. 4; FIG.
FIG. 7 is a perspective view illustrating an example in which a circuit breaker is coupled to an output terminal of the terminal unit shown in FIG. 3; FIG.
8 is a perspective view showing another example in which a breaker is coupled to the output terminal of the terminal portion shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, like reference numerals refer to like elements throughout the specification. Moreover, terms used herein (to be referred to) are intended to illustrate the embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

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

FIG. 2 and FIG. 3 are perspective views illustrating a solar light connecting panel according to an embodiment of the present invention, and FIG. 3 is a perspective view illustrating terminal portions of the solar light connecting panel shown in FIG. Here, FIGS. 2 and 3 illustrate a photovoltaic connection panel having two terminal portions as an example.

4 is an exploded perspective view of the one-channel terminal unit shown in FIG. 4, and FIG. 6 is a side view of the one-channel terminal unit shown in FIG.

Referring to FIGS. 2 to 6, the photovoltaic panel 100 according to the embodiment of the present invention includes a terminal portion 110. In the present invention, the terminal unit 110 is illustrated as two terminal units (two-channel terminal units) for receiving power from two solar battery panels and delivering them to the inverter. However, Depending on the number of channels, more than three channels are possible.

4 to 6, the terminal portion 110 includes first to third copper plate terminals 111, 112, and 113 (not shown) for transmitting power supplied from a solar cell panel (not shown) to an inverter , A reverse voltage prevention diode 114, a resistor 115, and a lamp 116. [

As shown in Fig. 3, the first copper plate terminal 111 is formed into a bar shape elongated in the longitudinal direction. The input terminal of the first copper plate terminal 111 is electrically connected to the first output terminal of the photovoltaic cell panel and the output terminal thereof is electrically connected to the breaker 130 And outputs the supplied power to the circuit breaker 130 through the output terminal.

At this time, a fastening hole 111a is formed in the input end of the first copper plate terminal 111 for stable connection with the first output terminal of the solar cell panel through a cable, and the output terminal is connected to the circuit breaker 130 through a cable A fastening hole 111b may be formed.

4 and 5, the second copper plate terminal 112 is formed in a bar shape elongated in the longitudinal direction, and is disposed on the horizontal line with the first copper plate terminal 111 so as to be parallel to the first copper plate terminal 111 . The second copper plate terminal 112 is electrically connected to the second output terminal of the photovoltaic cell panel and transmits power supplied from the second output terminal of the photovoltaic cell panel.

At this time, a coupling hole 112a is formed in the input end of the second copper plate terminal 112 for stable connection with the second output terminal of the solar cell panel through a cable, and an output terminal of the reverse voltage prevention diode 114 And a through hole 112b through which the first terminal 114a is inserted can be formed.

The third copper plate terminal 113 has a structure in which the input end is aligned with the output end of the second copper plate terminal 112 in the vertical direction and the output end is bent upward and downward so that the center portion is arranged on the horizontal line with the first copper plate terminal 111 And outputs the electric power delivered to the output terminal of the second copper plate terminal 112.

5, a groove 113b to which the second terminal 114b of the reverse voltage prevention diode 114 is bolted is formed at the input end of the third copper plate terminal 113, and the cable 140 (See FIG. 7), the fastening hole 113a may be formed for stable connection with the circuit breaker 130.

4 and 6, the reverse voltage prevention diode 114 is electrically connected in series between the output terminal of the second copper plate terminal 112 and the input terminal of the third copper plate terminal 113 aligned in the vertical direction, Thereby preventing a reverse voltage from flowing into the solar cell panel through the copper board terminal 112. [

5, the reverse voltage prevention diode 114 includes first and second terminals 114a and 114b having threads on the outer circumferential surface thereof and a fixing plate 114c provided between the first and second terminals 114a and 114b, . The first terminal 114a protrudes through the through hole 112b formed in the output terminal of the second copper plate terminal 112 and is coupled to the second copper plate terminal 112 through the nut 101, 114b are bolted to the groove 113b formed at the input end of the third copper plate terminal 113. [

6, one end of the resistor 115 is electrically connected to the first copper plate terminal 111, and the other end thereof is electrically connected to the first terminal of the lamp 116. [ The first terminal of the lamp 116 is connected to the other end of the resistor 115 and the second terminal is electrically connected to the third copper plate terminal 113.

The lamp 116 indicates when the resistor 115 and / or the reverse voltage prevention diode 114 are broken and disconnected, and preferably a light-emitting diode (LED) is used.

2, the terminal unit 110 according to the present invention is protected by the molding housing 120 to block foreign substances such as fine dust and moisture from entering from the outside.

The molding housing 120 covers and protects the peripheral portion including the reverse voltage prevention diode 114, the resistor 115, and the lamp 116, as shown in FIG. The molding housing 120 preferably has an input / output terminal of the first copper plate terminal 111 electrically connected to the solar cell panel and the circuit breaker 130, an input terminal of the second copper plate terminal 112, 113, the reverse voltage prevention diode 114, the resistor 115, and the lamp 116 to insulate and protect it.

3 or 4, the molding housing 120 may be formed by placing a molding frame at a central portion of a terminal portion 110 made of two channels or a single channel, and then inserting an insulating material such as epoxy, silicone, or urethane And then filling the mold with the molding mold.

7 is a perspective view illustrating an example in which a circuit breaker is coupled to an output terminal of the terminal unit shown in FIG.

4 and 7, a circuit breaker 130 is electrically connected to the output terminal of the terminal unit 110. [

The breaker 130 is electrically connected to the output terminals of the first and third copper plate terminals 111 and 113 to transmit power output from the output terminals of the first and third copper plate terminals 111 and 113 to the inverter, 110, or 110, detects the leakage current, the overvoltage or the overcurrent, and cuts off the power transmitted from the output terminals of the first and third copper plate terminals 111, 113 to the inverter.

7, the circuit breakers 130 are electrically connected to the output terminals of the respective terminal units 130 via the cables 140 in a one-to-one correspondence with the respective terminal units 130. That is, one channel is provided for each channel. However, as shown in FIG. 8, for example, one channel may be coupled to two channels.

8 is a perspective view showing another example in which a circuit breaker is coupled to an output terminal of the terminal unit shown in FIG.

8, the output terminal of each of the terminal units 130 is coupled to a single circuit breaker 130 through a cable 140. However, the output terminal of three or more terminal units may be connected to the cable 140, And may be electrically connected to the inverter through one circuit breaker 130 via a switch 130. [

7 and 8, it is preferable that the circuit breaker 130 is coupled between the output terminal of the terminal unit 110 and the inverter. However, It is not limited to a breaker, and a fuse may be used. At this time, the fuse may be mounted on a printed circuit board with a cartridge fuse.

The photovoltaic panel 100 according to the embodiment of the present invention is connected to the upper surfaces of the first to third copper plate terminals 111, 112 and 113 to prevent electrical components of the terminal portion 110, And a heat sink (not shown) for discharging the heat generated in the diode 114 to the outside.

The heat dissipation plate may have a through hole through which the first terminal 114a of the reverse voltage prevention diode 114 is inserted at at least one side portion and tightly tightly contact with the upper surface of the terminal portion 110 by the nut 101 . Accordingly, the heat generated in the electrical components of the terminal unit 110 and transferred through the first to third copper plate terminals 111, 112, and 113 is discharged to the outside through the heat sink.

The operation and effect of the photovoltaic module according to the embodiment of the present invention will be described below.

First, the photovoltaic panel according to the embodiment of the present invention does not have a structure in which electric components are mounted on a printed circuit board like the solar light connection panel according to the related art, but a structure in which electrical components are connected to a non- It is possible to prevent the fire from being greatly diffused due to the unburned copper plate terminal even if a fire occurs due to the explosion due to the overheating of the electric components, especially the reverse voltage prevention diode.

Secondly, the solar light connecting panel according to the embodiment of the present invention protects the electric parts formed in the terminal portion for transmitting the electric power supplied from the solar cell panel to the inverter by covering the housing with the molding housing, so that foreign substances such as fine dust, It is possible to prevent the entry of electric components into the electric components and the occurrence of fire due to foreign substances and moisture.

Thirdly, the solar light connecting panel according to the embodiment of the present invention is not mounted on the printed circuit board together with the other electric parts, as in the solar light connecting panel according to the related art, Independently installed at the output via a cable or using a breaker instead of a fuse can prevent fires.

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. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Photovoltaic connection board
110: terminal portion
111: first copper plate terminal
112: second copper plate terminal
113: third copper plate terminal
114: Reverse-voltage prevention diode
115: Resistance
116: lamp
120: Molding housing
130: Breaker
140: Cable

Claims (7)

A first copper plate terminal formed in a bar shape and electrically connected to a first output terminal of the solar cell panel to transmit power supplied from a first output terminal of the solar cell panel;
A second copper plate terminal formed in a bar shape and electrically connected to a second output terminal of the solar cell panel to transmit power supplied from a second output terminal of the solar cell panel;
A third copper plate terminal for transmitting the electric power delivered to the output terminal of the second copper plate terminal;
A reverse voltage prevention diode electrically connected between the second and third copper plate terminals;
A resistor whose one end is electrically connected to the first copper plate terminal; And
A lamp connected to the other end of the resistor and electrically connected between the third copper plate terminals;
, ≪ / RTI &
And a molding housing which covers and insulates the lamp and the other parts except for the input and output terminals of the first copper plate terminal, the input terminal of the second copper plate terminal and the output terminal of the third copper plate terminal, and the reverse voltage prevention diode, Further comprising a solar cell module.
The method according to claim 1,
The first and third copper plate terminals are electrically connected to the output terminals of the first and third copper plate terminals to transmit power output from the output terminals of the first and third copper plate terminals to the inverter. When a leakage current, an overvoltage, Further comprising a circuit breaker for interrupting power output from the output terminal of the inverter to the inverter.
The method according to claim 1,
The first and third copper plate terminals being electrically connected to the output terminals of the first and third copper plate terminals to transmit power output from the output terminals of the first and third copper plate terminals to the inverter and being damaged when an overvoltage or an overcurrent occurs, Further comprising a fuse for blocking power output from the output terminal to the inverter.
delete The method according to claim 1,
Wherein the second copper plate terminals are arranged on a horizontal line with respect to the first copper plate terminals, the input terminals of the third copper plate terminals are aligned with each other in the vertical direction with respect to the output terminals of the second copper plate terminals, And a plurality of photodetectors arranged on the photodetector.
The method according to claim 1,
The reverse-voltage prevention diode includes first and second terminals, wherein the first terminal is threaded on the outer circumferential surface, passes through the output terminal of the second copper plate terminal, and is electrically coupled to the second copper plate terminal through the nut And the second terminal is electrically connected to the groove formed at the input end of the third copper plate terminal by a bolt formed on the outer circumferential surface thereof.
The method according to claim 1,
Further comprising a heat sink coupled to an upper surface of the first to third copper plate terminals to discharge heat generated from the reverse voltage prevention diode to the outside.

Images