KR102533702B1 - Junction box for solar module - Google Patents

Abstract

The present invention relates to a junction box for a photovoltaic module, which simplifies the structure of the junction box provided to stably connect electricity from the photovoltaic module to each other so that assembly can be quickly and easily performed while waterproofing and heat dissipation are provided. The defect rate can be reduced by minimizing the flow of the terminal when filling the potting liquid, and since a plurality of diodes are fixedly installed in surface contact with the terminal, heat generated from the bypass diode can be quickly dissipated.

Description

Junction box for solar module {Junction box for solar module}

The present invention relates to a junction box for a photovoltaic module, and more particularly, to simplify the structure of a junction box provided to stably connect electricity from a photovoltaic module to each other so that assembly can be quickly and easily facilitated. The present invention relates to a junction box for a photovoltaic module capable of reducing the defect rate by minimizing the flow of a terminal when filling potting liquid for waterproof heat dissipation and quickly dissipating heat generated from a plurality of diodes.

As is well known, a solar cell uses the fact that photovoltaic power is generated by the photoelectric effect when the p-n junction of a semiconductor is irradiated with light, and several cells are connected in series or parallel. It is called a module, and a junction box is a component used to stably connect the electricity coming from the module to each other. It is usually installed at the back of the module. Connection points and connectors are built in, and are protected by a plastic box to block them from harsh external environments.

A junction box for such a solar module has been proposed in Patent Application No. 10-2018-0027677.

Looking at a conventional general junction box for a solar module, a terminal to which a cable is connected and provided to install a plurality of diodes, a bracket provided to fix the terminal to an upper surface, and a bracket to be accommodated and fixed to the inside It consists of a case provided in the shape of a square frame and a cover provided to cover the upper portion of the case.

Here, the above terminal is equipped with a cable coupling part and is divided into first, second, and third terminals, and a diode is installed horizontally at the first terminal, and a "ㅅ" shape is formed between the first terminal and the second and third terminals. A diode is installed and configured to be connected.

In addition, a heat dissipation hole is formed in the terminal, and a fixing wall having an inclined portion and a cutout is formed in the first, second, and third terminals to fix the diode. A fixing hole is formed in the terminal to be coupled with a bracket located at the bottom of the terminal.

In addition, the first, second, and third terminals are formed integrally by forming a cutting part connected to each other, and then removed when the diode is mounted, and a vertical hole is formed in the first terminal to form a first terminal. It is configured to be coupled with the coupling wall configured in the bracket coupled at the bottom of the.

The above-described bracket is formed in a rectangular plate shape, on the upper surface, a plurality of protrusion-shaped assemblies are formed to be combined with fixing holes, and in the middle, several bracket heat dissipation holes are formed horizontally for heat dissipation, and in the middle part of the terminal A coupling wall is formed and provided vertically so as to fit into the pit.

In addition, second walls are formed side by side to be inserted into the cutting space between the cutting parts on the left and right sides of the coupling wall, and several fitting protrusions are formed on the outer circumference of the bracket for coupling with the case.

The above case is formed as a rectangular frame so that the bracket to which the terminal is fixed can be fixedly installed on each part, and a plurality of grooves are formed on the inner surface to accommodate the fitting protrusion of the bracket.

In addition, protruding protrusions are provided on both side surfaces of the case to fix the cover.

The cover covers the upper portion of the case to which the bracket is fixed and is provided with locking protrusions formed on both inner surfaces thereof so as to lock the locking protrusions so as to be fixed through the locking protrusions.

However, the conventional general junction box for a solar module made in this way, as described above, flows in the left, right, forward, and rear directions inside the case by the combination body, the coupling wall, and the second wall in which the terminal is formed on the bracket. However, since there is no configuration for fixing the terminal in the upper and lower directions, the terminal may float from the bracket when filling the potting liquid for waterproof heat dissipation as the bracket installed on the top of the terminal is fixed to the case. There is a disadvantage that defective products can be manufactured.

In addition, the conventional junction box for a conventional photovoltaic module has a disadvantage in that a lot of time is required for manufacturing the terminal because a plurality of fixed walls must be formed on the terminal to fix and install the diode.

In addition, in the conventional junction box for a conventional photovoltaic module, since a plurality of diodes are minimally connected to and fixed to a terminal having a heat dissipation function, the diodes cannot be rapidly dissipated, and the terminals are formed by the coupling wall and the second wall. There is a disadvantage in that the hole between the bracket and the terminal cannot be smoothly filled when the potting liquid is filled because the pit hole and the cutting space are blocked.

Patent Application No. 10-2018-0027677, filing date; March 8, 2018

Therefore, the present invention has been made to solve the above-mentioned problems, and the structure of the junction box provided to stably connect the electricity coming from the solar module to each other is simplified so that the assembly can be quickly and easily waterproofed. And it is possible to reduce the defect rate by minimizing the flow of the terminal when filling the potting liquid for heat dissipation, and since a plurality of bypass diodes are fixedly installed in surface contact with the terminal, the heat generated from the bypass diode can be quickly dissipated. Its purpose is to provide a junction box for solar modules.

Other objects of the present invention will become apparent as the technology progresses.

In order to achieve the above object, the junction box for a photovoltaic module of the present invention is connected to each other through a cutting connection piece 110a, which is removed as a plurality of bypass diodes composed of a pair of leads and a body are connected and installed by welding. It is formed in a rectangular plate shape by being formed, and a plurality of first, second, and third fixing holes 111a, 112a, and 113a consisting of a pair are formed on the plate, and both sides of the lower part are cut and a cable (C) with a connector laid thereon Among the plurality of solar cells provided in the solar cell module by being connected by welding to both sides of the terminal 110 and the bottom surface of the terminal 110, the first and second connectors 114 and 115 are formed and provided to connect the When a part is contaminated or damaged, a plurality of bypass diodes 120 provided to prevent reverse current caused by a potential difference between power generation voltages between solar cells and the terminal 110 are located on the upper surface and fixed. It is formed in a cross-sectional shape corresponding to as much as possible, and is formed in a pair on the upper surface so that the terminal 110 can be fixed by being caught by being inserted into the first, second, and third fixing holes 111a, 112a, and 113a, respectively. By accommodating the fixing bracket 130 in which the first, second, and third fixing protrusions 131, 132, and 133 protrude, and the fixing bracket 130 fixed to the upper surface of the terminal 110 from the lower part to the upper part, A housing 140 provided to wire the cable C connected to the first and second connection parts 114 and 115 while being fixed, and a cover part 150 provided to be able to open and close the upper part of the housing 140 It is characterized in that it includes.

In addition, the above-described terminal 110 is divided into first, second, and third terminals 111, 112, and 113 spaced apart from each other to facilitate the inflow of potting liquid according to the removal of the cutting connecting piece 110a (110a), On each side of the first and second terminals 111 and 112, a first lead part connection groove 116 and a first diode receiving groove 117 are provided on the bottom surface to accommodate the bypass diode 120 and fix the lead part by welding. The second lead part connection groove 118 is formed on the other side of the second terminal 112 and one side of the third terminal 113 so that another bypass diode 120 can be accommodated and the lead part can be fixed by welding. ) and the second diode accommodating groove 119 are formed, and the first, second, and third potting liquid injection holes 111b, so that the potting liquid can be injected into the upper ends of the first, second, and third terminals 111, 112, and 113, 112b and 113c) are formed, and at the lower ends of the first, second, and third potting liquid injection holes 111b, 112b, and 113c, connection lines wired from the photovoltaic module side are wired to first, second, and third terminals (111, 112, and 113). ) and the first, second, and third wiring holes 111c, 112c, and 113c are formed and provided so as to be connected by welding, respectively.

As described above, according to the junction box for a photovoltaic module according to the present invention, the terminals of the junction box provided to stably connect electricity coming from the photovoltaic module to each other are configured to be fixed by pressing the upper surface of the fixing bracket. , It is possible to reduce the defect rate by minimizing the flow of the terminal when filling the potting liquid for waterproofing and heat dissipation while quickly and easily assembling, and since a plurality of bypass diodes are fixedly installed in surface contact with the terminal, the bypass diode It has the effect of quickly dissipating the heat generated in the

1 is a partially exploded perspective view showing a junction box for a solar module according to the present invention.
2 is an exploded perspective view showing a junction box for a solar module according to the present invention.
3 is an exploded perspective view showing a terminal and a fixing bracket of a junction box for a solar module according to the present invention.

Hereinafter, an embodiment of a junction box for a solar module according to the present invention will be described in detail.

First of all, it should be noted that in the drawings, the same components or parts are denoted by the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

As shown, the junction box 100 for a photovoltaic module according to the present invention is formed in a rectangular plate shape by being connected to each other through a cutting connection piece 110a removed during assembly, but a plurality consisting of a pair on the plate. The first, second, and third fixing holes 111a, 112a, and 113a are formed, and both sides of the lower portion are cut to form first and second connection parts 114 and 115 to connect the cable C to which the connector is laid, respectively. When some of the terminal 110, which is connected to both sides of the bottom surface of the terminal 110 by welding, and some of the plurality of solar cells provided in the solar cell module are contaminated or damaged, the potential difference between the generated voltages between the solar cells A plurality of bypass diodes 120 composed of a pair of leads and a body portion provided to prevent reverse current generated due to, and the terminal 110 is formed in a corresponding cross-sectional shape so that it is positioned and fixed on the upper surface, , On the upper surface, a plurality of first, second, and third fixings configured as a pair to fix the terminal 110 by being caught by being inserted into the first, second, and third fixing holes 111a, 112a, and 113a, respectively. The fixing bracket 130 in which the protrusions 131, 132, and 133 protrude, and the fixing bracket 130 fixed to the upper surface of the terminal 110 are fixed by receiving them from the bottom to the top inside, while the front surfaces of the first and second It includes a housing 140 provided to wire the cables C connected to the connection parts 114 and 115, and a cover part 150 provided to open and close the upper part of the housing 140.

Hereinafter, the junction box for a solar module according to the present invention will be described in more detail with reference to the accompanying drawings 1 to 3.

First, the terminal 110 of the junction box for a solar module according to the present invention described above is connected to each other through a cutting connection piece 110a that is removed as a plurality of bypass diodes 120 are connected and installed by welding. It is formed in a rectangular plate shape, a plurality of fixing holes 111a, 112a, and 113a are formed on the plate, and both sides of the lower part are cut to form first and second connection parts to connect the cables C, respectively.

That is, the above-described terminals 110 are formed in a rectangular plate shape by being connected to each other through the connecting pieces 110a for cutting, and the inflow of the potting liquid is facilitated by removing the connecting pieces 110a for cutting. It is divided into spaced first, second, and third terminals 111, 112, and 113, and the first, second, and third terminals 111, 112, and 113 have a pair of first and second spaced apart so as to be fixed to the fixing bracket 130. ,3 fixing holes 111a, 112a, and 113a are formed, and first and second connection parts 114 and 115 are formed and provided on both sides of the lower part to connect the cables C by being cut and rolled, respectively.

In addition, on each side of the first and second terminals 111 and 112, the first lead part connection groove 116 and the first lead part connection groove 116 are provided to accommodate the bypass diode 120 on the bottom surface and fix the lead part and the body part by welding. A diode accommodating groove 117 is formed, and another bypass diode 120 is accommodated on the bottom surface of the other side of the second terminal 112 and one side of the third terminal 113, and the lead portion and the body portion are fixed by welding. A second lead part connection groove 118 and a second diode accommodating groove 119 are formed and provided so as to be able to do so.

In addition, first, second, and third potting liquid injection holes 111b, 112b, and 113c are further formed at upper ends of the first, second, and third terminals 111, 112, and 113 to allow the potting liquid to be injected.

In addition, at each lower end of the first, second, and third potting liquid injection holes 111b, 112b, and 113c, connection lines wired from the photovoltaic module side are wired to weld the first, second, and third terminals 111, 112, and 113, respectively. First, second, and third wiring holes 111c, 112c, and 113c are further formed and provided so that they can be connected by

The bypass diode 120 includes a first lead part connection groove 116 formed in the first and second terminals 111 and 112 of the terminal 110, a first diode receiving groove 117, and a second terminal 112 And it is received in the second lead part connection groove 118 and the second diode accommodating groove 119 formed in the third terminal 113, and the lead part and the body part are welded to form the first lead part connection groove 116 and the second By being fixedly installed on the bottom surface of the lead part connection groove 118 by welding, it is located on the bottom surface of the terminal 110 and is provided to prevent reverse current caused by a potential difference between power generation voltages between solar cells.

As described above, since the bypass diode 120 is installed in surface contact rather than line contact in the first diode accommodating groove 117 and the second diode accommodating groove 117, the heat generated in the bypass diode 120 It can be quickly released to the terminal 110 side.

The fixing bracket 130 is formed in a corresponding cross-sectional shape so that the terminal 110 is positioned and fixed on the upper surface, and is inserted into the fixing holes 111a, 112a, and 113a on the upper surface, respectively. A plurality of first, second, and third fixing protrusions 131, 132, and 133 configured as a pair spaced apart from each other are protruded and provided so as to fix the , 2 and 3 terminals 111 , 112 , and 113 respectively.

In addition, between the first fixing protrusion 131 and the second fixing protrusion 132 and between the second fixing protrusion 132 and the third fixing protrusion 133 formed on the fixing bracket 130, the terminal 110 Square-shaped first and second accommodating grooves 134 and 135 are formed on the bottom surface to accommodate the bypass diode 120 fixed by welding. First and second openings 134a and 135a are formed and provided so that the potting liquid can flow into the first and second accommodating grooves 134 and 135 quickly and well.

In addition, the terminal 110 is fixedly installed on the upper part of the first and second receiving grooves 134 and 135 to match the first, second, and third wiring holes 111c, 112c, and 113c from the photovoltaic module side. Wiring holes 136, 137, and 138 for the first, second, and third fixing brackets are formed at regular intervals in the horizontal direction so as to wire the wired connection lines, and the connection lines are separated from the inner circumferential surface of the wiring holes for the first, second, and third fixing brackets (136, 137, 138) First, second, and third separation prevention protrusions 136a, 137a, and 138a are further formed and provided to prevent this.

In addition, the terminal 110 is fixedly installed on the upper part of the wiring holes 136, 137, and 138 for the first, second, and third fixing brackets, thereby matching the first, second, and third potting liquid injection holes 111b, 112b, and 113b. Each side is formed to be in communication with the wiring holes (136, 137, 138) for the first, second, and third fixing brackets so that the potting liquid can quickly flow into the wiring holes (136, 137, 138) for the first, second, and third fixing brackets as the potting liquid flows in. Potting liquid inlet holes 130a, 130b, and 130c for the first, second, and third fixing brackets are further formed and provided.

In addition, a plurality of pressing protrusions 130d are protrudingly formed on the left, right, front, and rear surfaces of the fixing bracket 130 to be inserted and fixed from the bottom of the housing 140, and the pressing protrusions 130d A plurality of locking jaws 130e are provided between the and the pressing protrusions so as to be locked to the housing 140 .

In addition, the first, second, and third fixing protrusions 131, 132, and 133 are a pair of first, second, and third fixing holes 111a and 112a formed in the first, second, and third terminals 111, 112, and 113 of the terminal 110, respectively. The first, second, and third terminals protruding vertically upward from the upper surface of the fixing bracket 130 so that the first, second, and third terminals 111, 112, and 113 can be respectively fixed by being inserted into and fixed to , 113a). The ends are fixed by being bent and extended downward to have elasticity from the other ends of the vertical portions 131a, 132a, and 133a for fixing protrusions and the vertical portions 131a, 132a, and 133a for the first, second, and third fixing protrusions. It consists of bent parts 131b, 132b, and 133b for the first, second, and third fixing protrusions formed to be spaced apart from the upper surface of the bracket 130.

Here, the bent portions 131b, 132b, and 133b for the first, second, and third fixing protrusions of the first, second, and third fixing protrusions 131, 132, and 133 are for fixing the first, second, and third terminals 111, 112, and 113. It is provided by bending in directions opposite to each other.

Therefore, as the terminal 110 is fixed to the upper surface of the fixing bracket 130 through the first, second, and third fixing protrusions 131, 132, and 133, movement in the left, right, forward, backward, and up and down directions can be prevented. can

The housing 140 fixes the fixing bracket 130 by inserting the fixing bracket 130 fixed to the top of the terminal 110 from the bottom to the inside of the top, and the front surface is the first and second connection parts 114 and 115. ) It is formed and provided in a square frame shape so that the cable C connected to the connection can be wired.

That is, the above-described housing 140 is formed in a rectangular frame shape, and the lower inner surface has a pressurized fixing receiving groove 141 having a corresponding cross-sectional shape so that the pressurizing protrusion 130d of the fixing bracket 130 can be pressurized. ) is formed in plurality, and between the receiving groove 141 for press fixing and the receiving groove 141 for fixing press, a plurality of fixing brackets 130 can be fixed by being caught by the locking jaw 130e. The locking protrusion 142 is protruded and provided.

When assembling the junction box for a photovoltaic module according to the present invention made as described above, as shown in the accompanying drawings FIGS. In a state where the terminals 110 connected to each other are turned over, the lead parts are fixedly connected to the first lead part connection groove 116 and the second lead part connection groove 118 by welding, respectively, and then the first diode receiving groove 117 and the second lead part connection groove 117 are connected. The bypass diode 120 is fixedly connected to the 2-diode accommodating groove 119 by welding according to insertion and seating.

Thereafter, after the terminal 110 is turned over, the cables C having connectors are connected to the first and second connection parts 114 and 115, respectively.

As described above, when the bypass diode 120 is fixed to the terminal 110 and the cable C is connected, the cutting connection piece 110a is cut.

With the cutting of the connecting piece 110a for cutting, the terminal 110 divided into the first, second, and third terminals 111, 112, and 113 is inverted, that is, in a state where the bypass diode 120 is located on the bottom of the terminal, a fixed bracket Place it on the upper surface of (130).

That is, the first, second, and third fixing holes 111a, 112a, and 113a formed in the first, second, and third terminals 111, 112, and 113 and the first, second, and third fixing protrusions 131, 132, and 133 formed in the fixing bracket 130 are After matching, press while applying a predetermined force to the upper surfaces of the first, second, and third terminals 111, 112, and 113.

Therefore, the vertical portions 131a, 132a, and 133a for the first, second, and third fixing protrusions of the first, second, and third fixing protrusions 131, 132, and 133 and the bent portions 131b, 132b for the first, second, and third fixing protrusions, 133b) penetrates the first, second, and third fixing holes 111a, 112a, and 113a, and the bent portions 131b, 132b, and 133b for the first, second, and third fixing protrusions fix the first, second, and third fixing holes. The first, second, and third terminals 111, 112, and 113 are elastically contracted by passing through the holes 111a, 112a, and 113a, and then caught on the upper surfaces of the first, second, and third terminals 111, 112, and 113 while returning. fixed is complete

As described above, when the first, second, and third terminals 111, 112, and 113 are fixed to the upper surface of the fixing bracket 130, the fixing bracket 130 is inserted from the lower surface of the housing 150 inwardly to the fixing bracket 130. A plurality of pressing protrusions 130d protruding from the outer circumferential surface of the housing 140 are inserted into a plurality of pressing and fixing receiving grooves 141 formed on the inner surface of the housing 140, and the locking protrusion 142 is formed on the locking jaw 130e. Fixing of the fixing bracket 130 is completed by being caught.

When the fixing of the fixing bracket 130 is completed as described above, a potting liquid is filled into the housing 140 to which the fixing bracket 130 is fixed for waterproofing and heat dissipation.

At this time, the potting liquid filled inside the housing 140 is separated from the space between the first, second, and third terminals 111, 112, and 113, the first, second, and third potting liquid injection holes 111b, 112b, and 113c, and the first , It is filled while quickly flowing into the fixing bracket 130 side through the first and second openings 134a and 135a of the second receiving grooves 134 and 135.

When the filling of the potting liquid is completed as described above, the assembly of the junction box is completed by covering the upper part of the housing 140 with the cover part 150 .

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

C; cable 100; Junction box for solar module
110; terminal 120 ; bypass diode
130; Fixed bracket 140; housing
150; cover

Claims (7)

Junction boxes for solar modules,
A plurality of bypass diodes composed of a pair of leads and a body are connected to each other through a connecting piece 110a for cutting that is removed as they are connected and installed by welding to form first, second, and third terminals 111, 112, and 113, A plurality of first, second, and third fixing holes 111a, 112a, and 113a formed as a pair are formed in the first, second, and third terminals 111, 112, and 113, and both lower sides are cut to form a cable (C) with connectors laid thereon. a terminal 110 having first and second connectors 114 and 115 formed and provided to connect each;
When some of the plurality of solar cells provided in the solar cell module are contaminated or damaged because each lead part and body part are connected by welding to both sides of the bottom surface of the terminal 110, the potential difference between the power generation voltages between the solar cells a plurality of bypass diodes 120 provided to prevent reverse current generated due to;
The terminal 110 is formed in a corresponding cross-sectional shape so that it is positioned and fixed on the upper surface, and is caught on the upper surface by being inserted into the first, second, and third fixing holes 111a, 112a, and 113a, respectively. ) A fixing bracket 130 having a plurality of first, second, and third fixing protrusions 131, 132, and 133 protrudingly formed in a pair so as to fix the fixing bracket 130;
While the terminal 110 is fixed by receiving the fixing bracket 130 fixed on the upper surface from the lower part to the upper part inside, the front surface is provided so that the cables C connected to the first and second connectors 114 and 115 can be wired. The housing 140 and;
It includes a cover part 150 provided to open and close the upper part of the housing 140,
In the fixing bracket 130, wiring holes 136, 137, and 138 for the first, second, and third fixing brackets are formed at regular intervals in the lateral direction so that the connection lines wired from the photovoltaic module side are wired. First, second, and third separation prevention protrusions 136a, 137a, and 138a are formed on the inner circumferential surface of the wiring holes 136, 137, and 138 for the fixing bracket to prevent the connection line from departing.
The first, second, and third fixing protrusions 131, 132, and 133 include a pair of first, second, and third fixing holes 111a, 112a, and 113a respectively formed in the first, second, and third terminals 111, 112, and 113 of the terminal 110. ) For the first, second, and third fixing protrusions protruding vertically upward from the upper surface of the fixing bracket 130 so that the first, second, and third terminals 111, 112, and 113 can be respectively fixed by being inserted into and fixed. The vertical parts 131a, 132a, and 133a and the other ends of the first, second, and third fixing protrusions 131a, 132a, and 133a are bent and extended downward to have elasticity, so that the end ends of the fixing bracket 130 ) Is composed of bent parts 131b, 132b, and 133b for the first, second, and third fixing protrusions formed to be spaced apart from the upper surface of the
The bent portions 131b, 132b, and 133b for the first, second, and third fixing protrusions of the first, second, and third fixing protrusions 131, 132, and 133 are mutually related to each other for fixing the first, second, and third terminals 111, 112, and 113. A junction box for a solar module, characterized in that it is provided by being bent in a direction opposite to that of the other.
According to claim 1,
The terminal 110 is divided into first, second, and third terminals 111, 112, and 113 spaced apart from each other to facilitate the inflow of potting liquid by removing the cutting connecting piece 110a, and the first and second terminals ( 111 and 112), a first lead part connection groove 116 and a first diode receiving groove 117 are formed on the bottom surface to accommodate the bypass diode 120 and fix the lead part and the body by welding. , The second lead portion connection groove (the second lead portion connection groove ( 118) and the second diode accommodating groove 119 are formed, and the first, second, and third potting liquid injection holes 111b are formed so that the potting liquid can be injected into the upper ends of the first, second, and third terminals 111, 112, and 113. , 112b, 113c) are formed, and at the bottom of each of the first, second, and third potting liquid injection holes 111b, 112b, and 113c, a connection line wired from the photovoltaic module side is wired to the first, second, and third terminals ( 111, 112, 113) and the first, second, and third wiring holes 111c, 112c, and 113c are formed and provided so as to be connected by welding, respectively.
According to claim 1,
Between the first fixing protrusion 131 and the second fixing protrusion 132 and between the second fixing protrusion 132 and the third fixing protrusion 133 formed on the fixing bracket 130, the bottom surface of the terminal 110 Square-shaped first and second accommodating grooves 134 and 135 are formed to accommodate the bypass diode 120 fixed by welding. A junction box for a photovoltaic module, characterized in that first and second openings 134a and 135a are formed and provided so that the potting liquid can quickly flow into the first and second accommodating grooves 134 and 135.
delete According to claim 1,
In the upper part of the wiring holes 136, 137, and 138 for the first, second, and third fixing brackets, each one side of the first, second, and third fixing bracket wiring holes 136, 137, and 138 can be quickly introduced into the wiring holes 136, 137, and 138 as the potting liquid flows in. For solar modules, characterized in that the potting liquid inlet holes 130a, 130b, and 130c for the first, second, and third fixing brackets formed to communicate with the wiring holes 136, 137, and 138 for the first, second, and third fixing brackets are formed and provided. junction box.
delete delete

Images