KR20130019730A - Junction box for photovoltaic module - Google Patents

Abstract

PURPOSE: A junction box for a photovoltaic module is provided to facilitate connection work by connecting a ribbon wire to a terminal without using an additional tool. CONSTITUTION: A case is adhered to a solar cell module. Ribbon wires are inserted into a case. Terminals(130) are installed in the case. A by-pass diode(140) is installed between the terminals. A ribbon contact cover(150) is rotatably installed inside the case.

Description

Junction Box for Solar Modules {Junction Box for Photovoltaic Module}

The present invention relates to a junction box for a photovoltaic module that integrates and stably supplies electricity of a solar cell module that converts solar energy into electrical energy, and more particularly, to a ribbon wire member of a solar power module. Junction box for solar cell module with multi-contact connection method, which can improve the stability of contact and reduce the contact resistance in the electrical connection of the terminal member, and can be assembled without the help of a separate assembly tool. It is about.

In recent years, countries around the world have adopted low-carbon green technology and green industries as new growth engines to overcome climate change crisis caused by increased fossil fuel use, global population growth, and energy and resource crisis caused by the rapid growth of BRICs. The era of green growth is being adopted as a paradigm for new national development.

Green growth is to break away from the stereotype that environment and economy are conflicting, maximizing the synergy between the two, which means that the economic growth contributes to the improvement of the environment, and the environment is transformed into the growth engine, so that the economy and the environment are a new cycle of new development. do.

As one of the specific driving directions for green growth, photovoltaic power generation has been spotlighted as a means for realizing oil and energy independence.

Photovoltaic power generation is implemented in the form of power generation that receives electricity and generates electricity directly from solar cells made of semiconductor materials. In other words, photovoltaic power generation is a method of generating by converting light energy from the sun directly into electrical energy. The photovoltaic system arranges and installs a solar cell module (ie, a solar panel) outside the building, and supplies power to various electric devices through a junction box, an inverter, and a distribution panel from the module.

The photovoltaic module receives direct sunlight to generate direct current electricity. Thus, a junction box is needed to collect and generate electricity generated by the solar module.

The junction box is connected in series or in parallel to the solar cell module, and is typically fixed to the back side of the solar cell module while maintaining watertightness by the sealing material.

In general, the junction box is connected to the solar cell module using a flexible ribbon cable, and collects electricity generated in the solar cell module through a ribbon wire (cable).

The ribbon wire is a conductor material, which is drawn out of the solar cell module and electrically connected to a terminal installed inside the junction box. A bypass diode is connected between the terminals, and an external cable is connected to the terminal.

Application box 10-2009-0046616 discloses a junction box.

In the case of the conventional junction box, when connecting the ribbon wire to the junction box, soldering or lifting the driver insertion groove to insert the ribbon wire, or fold the ribbon wire is inserted into the terminal block to connect.

In the case of soldering, not only the workability is poor, but also the A / S replacement is difficult and the busbar contacts and the junction box body are connected because the ribbon wire is connected by applying a physical force by the driver to insert the ribbon wire into the driver insertion groove. May be damaged.

In addition, when the ribbon wire is folded, the ribbon wire is folded, so that the contact resistance is increased to generate heat and the contact safety is deteriorated, and the ribbon wire needs to be folded and connected, thus requiring further follow-up on the ribbon wire.

As described above, in the conventional method, when performing the A / S operation of the junction box, the junction box body may be damaged, and the junction box having a structure that can be easily connected to the ribbon wire is required because subsequent work on the ribbon wire is required. It is required.

An object of the present invention is to solve the above problems, the electrical connection between the ribbon wire member and the terminal member is made by the elasticity of the ribbon contact spring, it can be connected without the aid of a separate work tool using a ribbon contact cover To provide a junction box.

In order to achieve the above object, the junction box for a solar cell module of the present invention includes a case having an accommodation space formed therein and attached to the solar cell module; A plurality of ribbon wire members drawn out from the solar cell module and drawn into the case; A plurality of terminal members installed in the case to be connected to the ribbon wire member; A bypass diode disposed between the terminal members; And a ribbon contact cover having one end rotatably installed at an inner surface of the case and a contact spring installed at the other end to press the terminal member downward to electrically connect the ribbon wire member and the terminal member. .

The terminal member has a "U" shaped holder portion, and the contact spring engages in the holder portion.

The contact spring is elastically deformed when inserted into the holder part.

The contact spring has a mounting hole formed at an end of the ribbon contact cover, and is detachably coupled to the mounting hole.

The ribbon wire member and the terminal member are electrically connected by elasticity of the contact spring.

A hinge mount is formed on an inner side of the case, and the ribbon contact cover is hinged to the hinge mount, such that the ribbon contact cover is rotatable around the hinge.

The case has a structure in which the case cover covering the upper case is hinged rotatably.

A sealer is installed at an edge of the case cover to seal between the case and the case cover.

The case cover is provided with a pressure compensation hole for compensating the internal pressure of the case according to the temperature rise to the external pressure.

The front of the case is provided with a locker (Locker) for locking the case cover.

A cable member is connected to the terminal member and exposed to the outside of the case.

As described above, the present invention allows the ribbon contact cover to rotate and electrically connect the ribbon wire member and the terminal member by elasticity of the ribbon contact spring without the aid of a separate work tool such as a screwdriver or a soldering mechanism. The connection work between the wire member and the terminal member is quick and simple, thereby improving workability, easy A / S replacement, and preventing damage to the junction box.

1 is a perspective view showing a junction box for a solar cell module according to a preferred embodiment of the present invention
2 is a side view showing a junction box for a solar cell module according to a preferred embodiment of the present invention, showing a state in which a case cover is opened.
3 is a side view showing a junction box for a solar cell module according to an exemplary embodiment of the present invention, showing a state in which a case cover is opened.
Figure 4 is a plan view showing a junction box for a solar cell module according to an embodiment of the present invention
5 illustrates an operation of electrically connecting the ribbon wire member and the terminal member, and shows a state before the ribbon contact spring presses the terminal member.
6 is a view illustrating an operation of electrically connecting the ribbon wire member and the terminal member, and showing a state before the elastic deformation of the ribbon contact spring.
FIG. 7 illustrates an operation of electrically connecting the ribbon wire member and the terminal member, and illustrates an elastic deformation of the ribbon contact spring.
FIG. 8 illustrates an operation of electrically connecting the ribbon wire member and the terminal member, and illustrates a state in which the ribbon wire member and the terminal member are electrically connected by the ribbon contact spring.

Hereinafter, a junction box for a solar cell module according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a junction box for a solar cell module according to a preferred embodiment of the present invention, Figure 2 is a side view showing a junction box for a solar cell module according to a preferred embodiment of the present invention, the case cover is open 3 is a side view showing a junction box for a solar cell module according to a preferred embodiment of the present invention, showing a state in which the case cover is opened, and FIG. 4 for a solar cell module according to a preferred embodiment of the present invention. 5 is a plan view showing the junction box, FIG. 5 illustrates an operation of electrically connecting the ribbon wire member and the terminal member. FIG. 6 is a view illustrating a state before the ribbon contact spring presses the terminal member. FIG. 6 is a ribbon wire member and the terminal member. To illustrate the operation of electrically connecting the wire, showing a state before the elastic deformation of the ribbon contact spring, FIG. Next, the operation of electrically connecting the member and the terminal member will be described. The elastic deformation of the ribbon contact spring will be described, and FIG. 8 will be described the operation of electrically connecting the ribbon wire member and the terminal member. The figure which shows the state which electrically connected the ribbon wire member and the terminal member was completed by.

First, referring to FIGS. 1 to 4, the junction box 100 for a solar cell module according to an exemplary embodiment of the present invention collects and connects electricity generated by the solar cell module 10 (not shown). And connected in series (or parallel) to the solar cell module 10 to provide it to the solar cell module 10.

The junction box 100 for a solar cell module according to an exemplary embodiment of the present invention has a housing space 111 formed therein and includes a case (base portion) 110 attached to the solar cell module 10.

The plurality of ribbon wire members 120 are drawn out of the solar cell module 10 into the case 110.

The ribbon wire member 120 is made of a conductive material, and may be formed of various shapes and materials, including a thin plate shape, in a technical concept of transferring electrical energy generated from the solar cell module 10 to the junction box 100. have.

A plurality of terminal members 130 are installed in the case 110 to be connected to the ribbon wire member 120.

The terminal member 130 is made of a conductive material to be electrically connected to the ribbon wire member 120, the terminal member 130 may also be formed in a variety of shapes, including a thin plate shape.

When the ribbon wire member 120 is provided in plural, a plurality of connected portions of the terminal member 130 corresponding thereto are also provided.

The bypass diode 140 is installed between the terminal members 130.

The bypass diode 140 guides electricity to flow by bypassing the solar cell module 10 in which the amount of power generation is lowered due to shadows or foreign substances, thereby preventing the output of the solar power generation from being lowered and suppressing heat generation. As such, these techniques correspond to known techniques, and thus detailed description thereof will be omitted.

A ribbon contact cover 150 is installed in the case 110 to press the terminal member 130 downward to electrically connect (or connect) the ribbon wire member 120 and the terminal member 130.

One end of the ribbon contact cover 150 is rotatably installed on the inner surface of the case 110, and a contact spring 151 is installed at the other end of the ribbon contact cover 150. The contact spring 151 may be formed of metal or synthetic resin.

In detail, referring to FIG. 5, a hinge mount 112 is formed on an inner surface of the case 110, and the ribbon contact cover 150 is hinged 152 to the hinge mount 112. Thus, the ribbon contact cover 150 is configured to be rotatable about the hinge 152.

The terminal member 130 has a substantially “U” shaped holder portion 131, and is configured to couple the contact spring 151 into the holder portion 131, wherein the contact spring 151 is formed in the holder portion. When inserted into the 131, it is elastically deformed and configured to be in close contact with the inner wall surface of the holder portion 131.

The ribbon wire member 120 and the terminal member 130 are electrically connected to each other by the elasticity of the contact spring 151.

The contact spring 151 has a mounting hole 150a formed at an end of the ribbon contact cover 150 and is detachably coupled to the mounting hole 150a.

The case cover 160, which covers the upper portion of the case 110, is rotatably coupled to the hinge 161.

It is preferable that a sealer (or gasket) S is installed at an edge of the case cover 160 so that the case 110 and the case cover 160 can be watertight.

The case cover 160 is formed with a pressure compensation hole 163 for compensating the internal pressure of the case 110 with an external pressure according to the temperature rise, and the pressure compensation hole 163 has a seal structure to be waterproof. Formed (see FIG. 4).

The front of the case 110 is provided with a locker 113 for locking the case cover 160 (see Fig. 1).

The cable member 170 is connected to the terminal member 130 and configured to be exposed to the outside of the case 110.

Referring to the operation of the junction box 100 for a solar cell module according to an embodiment of the present invention configured as described above are as follows.

The junction box 100 for a solar cell module according to a preferred embodiment of the present invention collects electricity generated by the solar cell module 10 and provides the solar cell module 10 with a junction box (not shown). Are connected in series (or in parallel) and fixed to the rear surface of the solar cell module 10. First, the ribbon wire member 120 is placed on the “U” shaped holder portion 131 of the terminal member 130. Release (see FIG. 5).

Then, the ribbon contact cover 150 is rotated around the hinge 152 to allow the contact spring 151 to be inserted into the holder part 131 (see FIGS. 6 and 7).

In this case, when the contact spring 151 is inserted into the holder part 131, both side surfaces of the contact spring 151 are elastically deformed and are in close contact with the inner wall surface of the holder part 131. As the lower end of the 151 secures the ribbon wire member 120 (see FIG. 8), the ribbon wire member 120 is resilient by the elasticity of the ribbon contact spring 151 without the aid of a separate work tool such as a screwdriver or a soldering mechanism. ) And the terminal member 130 can be electrically connected to each other, so that the operation of connecting the ribbon wire member 120 and the terminal member 130 is very quick and simple.

In addition, when it is necessary to electrically separate the ribbon wire member 120 and the terminal member 130, by rotating the ribbon contact cover 150 in the opposite direction around the hinge 152, the contact Since the spring 151 may be drawn out of the holder 131, the separating operation of the ribbon wire member 120 and the terminal member 130 is also very quick and easy.

In addition, a mounting hole 150a (refer to FIG. 1) is formed at an end of the ribbon contact cover 150, and the end of the contact spring 151 can be detachably coupled to the mounting hole 150a. Since the contact spring 151 is deformed due to prolonged use, it may be replaced with a new contact spring.

In addition, since the case cover 160 is pivotally coupled to the case 110 to the hinge 161, the case cover 160 is very convenient to open and close.

In addition, since a sealer (or gasket) S is installed at an edge of the case cover 160, water is tightly sealed between the case 110 and the case cover 160 to effectively short the water leakage. You can prevent it.

As described above, the present invention allows the ribbon contact cover to rotate and electrically connect the ribbon wire member and the terminal member by elasticity of the ribbon contact spring without the aid of a separate work tool such as a screwdriver or a soldering mechanism. The connection work between the wire member and the terminal member is quick and simple, thereby improving workability, easy A / S replacement, and preventing damage to the junction box.

As such, the rights of the present invention are not limited to the above-described embodiments, but are defined by the claims, and various modifications can be made within the scope of the claims by those skilled in the art. It is self evident.

100: junction box 110 for the solar cell module: case
111: storage space 112: hinge mounting portion
113: rocker 120: ribbon wire member
130: terminal member 131: U-shaped holder portion
140: bypass diode 150: ribbon contact cover
150a: mounting hole 151: contact spring
152: hinge 160: case cover
161: hinge 163: pressure compensation hole
170: cable member S: sealer

Claims (13)

A case 110 having an accommodation space 111 formed therein and attached to the solar cell module 10;
A plurality of ribbon wire members 120 drawn from the solar cell module 10 and drawn into the case 110;
A plurality of terminal members 130 installed in the case 110 to be connected to the ribbon wire member 120;
A bypass diode 140 installed between the terminal members 130; And
Pressing the terminal member 130 downward, one end portion is rotatably installed on the inner surface of the case 110 so as to electrically connect the ribbon wire member 120 and the terminal member 130, the other end is contact Junction box for a solar cell module comprising a; a ribbon contact cover 150 is installed spring (151).
The method of claim 1,
The terminal member (130) has a "U" shaped holder portion (131), the junction box for a solar cell module, characterized in that the contact spring (151) is coupled to the holder portion (131).
The method according to claim 1 or 2,
When the contact spring 151 is inserted into the holder 131, the junction box for a solar cell module, characterized in that the structure is elastically deformed.
The method of claim 3,
The contact spring 151 has a mounting hole 150a formed at an end of the ribbon contact cover 150, and a junction for a solar cell module, characterized in that the structure is detachably coupled to the mounting hole 150a. box.
The method according to claim 1 or 2,
Junction box for a solar cell module, characterized in that the ribbon wire member 120 and the terminal member 130 is electrically connected by the elasticity of the contact spring (151).
The method of claim 1,
A hinge mounting portion 112 is formed on an inner side of the case 110, and the ribbon contact cover 150 is coupled to the hinge 152 on the hinge mounting portion 112, so that the ribbon contact cover 150 is formed. The junction box for a solar cell module, characterized in that the structure to operate rotatably around the hinge (152).
The method of claim 1,
The case 110 is a junction box for a solar cell module, characterized in that the case cover 160 covering the upper portion of the case 110 is provided with a structure that is rotatably coupled with the hinge (161).
The method of claim 7, wherein
A junction box for a solar cell module, characterized in that a sealer (S) is installed at an edge of the case cover 160 so as to be watertight between the case 110 and the case cover 160.
The method of claim 7, wherein
The case cover 160 is a junction box for a solar cell module, characterized in that the pressure compensation hole (163) for compensating the internal pressure of the case 110 according to the temperature rise to an external pressure is formed.
10. The method of claim 9,
The pressure compensation hole (163) is a junction box for a solar cell module, characterized in that the seal structure to be waterproof.
The method of claim 7, wherein
The front of the case 110, the junction box for a solar cell module, characterized in that the locker 113 for locking the case cover 160 is installed.
The method of claim 1,
The terminal member 130 is connected to the cable member 170, the junction box for a solar cell module, characterized in that exposed to the outside of the case (110).
In the junction box connected to the solar cell module 10 in series or in parallel to collect and provide electricity generated by the solar cell module 10, fixed to the back of the solar cell module 10,
One end of the ribbon contact cover 150 is rotatably installed on the inner surface of the case 110 to press the terminal member 130 downward to electrically connect the ribbon wire member 120 and the terminal member 130. The junction box for a solar cell module, characterized in that a contact spring (151) is installed at the other end of the ribbon contact cover (150).

Images