CN201994507U - Solar battery cable - Google Patents

Abstract

The utility model discloses a solar cell connecting wire, which comprises a fuse holder, two cables and two plug terminals, wherein one end of each cable is connected with the plug terminal, the other end of each cable forms a wiring end, the fuse seat comprises a fuse component, a seat body and an integrally formed insulating shell sleeve, the wiring ends of the two cables are respectively and fixedly connected with the seat body, the fuse component is arranged in the seat body, two ends of the fuse component are respectively and electrically connected with the wiring ends of the cables, the insulating shell sleeve is coated outside the seat body and is hermetically connected with the cables, when the current is too large, the fuse seat can effectively play a role of power-off protection, the fuse component, the seat body and the wiring terminal of the cable are hermetically covered by the integrally formed insulating shell, thereby make the utility model discloses a solar cell connecting wire is waterproof, corrosion-resistant, the leakproofness is good and conform to the operation requirement under the outdoor adverse environmental condition, ensures the reliable and stable of solar cell work.

Description

Solar battery cable

technical field

The utility model relates to a connecting wire, in particular to a solar cell connecting wire.

Background technique

The inexhaustible solar energy is more and more favored by people because of its safety, cleanliness and environmental protection. The solar energy industry has become a sunrise industry that the world is chasing. In China, more and more companies have joined this "daily industry". China has become the third largest solar energy manufacturing base in the world. Solar cells convert solar radiation directly into electrical energy. The device converts solar energy into electrical energy through solar panels, and then transmits the electrical energy converted from solar panels to AC loads, DC loads and batteries through junction boxes, cable assemblies, controllers and inverters, thereby effectively converting solar energy It is the energy available for people's daily life or work. With the widespread promotion and use of solar power generation, special connecting wires for solar cells have also come into operation and are developing rapidly. When building a solar power generation system, it is necessary to connect hundreds of solar panels in series and parallel through connecting wires to obtain a large For example, through the series connection of rows and the parallel connection of columns, when the output voltage at both ends of the column is large, the current of the row will increase, which may cause the output current to be too large, and the overload of the current will easily damage the battery board and other components. Therefore, it is necessary to introduce a protection device to realize power-off protection when the current is overloaded. However, since solar cells are usually used and installed in an outdoor environment with harsh and changeable weather, their connection lines and protection devices are generally in the open state, exposed to the sun and rain. rain, the working environment is harsh, and the protective device must have waterproof, anti-corrosion, and anti-ultraviolet properties. Therefore, it is necessary to have an overload protection function, waterproof, corrosion-resistant, good sealing and meet the use of outdoor harsh environmental conditions. Required connecting wires to realize the output connection of the solar cell.

Utility model content

The purpose of the utility model is to provide a solar battery connection line with overload protection function, waterproof, corrosion resistance, good sealing performance and meeting the use requirements under harsh outdoor environmental conditions.

In order to achieve the above object, the utility model provides a solar battery connecting wire, including a fuse holder, two cables and two plug terminals, one end of the cable is connected to the plug terminal, and the other end forms a terminal, and the fuse holder includes A fuse assembly, a base body and an integrally formed insulating shell, the terminals of the two cables are respectively fixedly connected to the base body, the fuse assembly is installed in the base body and both ends are respectively connected to the terminals of the cables For electrical connection, the insulating sheath covers the base body and is sealed and connected with the cable.

Preferably, the insulating sheath is a irradiated cross-linked polyethylene sheath, and the two ends of the irradiated cross-linked polyethylene sheath are pointed and formed with several annular concave grooves. Polyethylene can undergo irradiation cross-linking reaction under the action of rays, and form macromolecules after cross-linking, which improves the heat-resistant and anti-corrosion grade of polyethylene. The use of irradiation cross-linked polyethylene shell can strengthen the solar cell connecting wire Excellent anti-aging, anti-radiation and high temperature resistance performance, protect the fuse components from the damage of the external harsh environment, improve the stability of the solar cell work. The concave structure can make the structure of the insulating shell more compact, enhance the sealing performance, and facilitate drainage and prevent accumulation on the insulating shell.

Preferably, the cable is also coated with a layer of irradiated cross-linked polyethylene. Since the cable also needs to be exposed to harsh environments, the heat resistance and aging resistance of the cable coated with the layer of irradiated cross-linked polyethylene powerful.

Preferably, the solar cell connecting wire further includes two sealing rings, the sealing rings are arranged between the insulating shell and the cable, and the sealing rings can effectively strengthen the connection between the cable terminal and the insulating shell. of tightness.

Compared with the prior art, the solar battery connecting wire of the utility model can be respectively connected with the solar battery and other components through the plug terminals, and when the output current is too large, the setting of the fuse holder can effectively cut off the path and play a protective role. The terminals of the two cables are fixedly connected to the body of the fuse holder and are electrically connected to the two ends of the fuse assembly respectively. The insulating shell is integrally formed outside the body to seal the fuse assembly, the body, and the terminals of the cable. Wrapped, the structure is compact and compact, and the mechanical properties are stable. It is not only waterproof, anti-corrosion, anti-ultraviolet, but also has good sealing performance. It meets the requirements of outdoor harsh environmental conditions and makes the working performance of solar cells more stable and reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of a solar cell connecting wire according to an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of a fuse holder of a solar cell connecting wire according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

With reference to Fig. 1 and Fig. 2, the solar cell connecting line of the embodiment of the present invention comprises two cables 10, a fuse holder 20 and two plug terminals 30, one end of the cable 10 is connected to the plug terminal 30, and the other end forms a terminal 11 , the plug terminal 30 is docked and matched with the terminal of the solar cell panel and other components such as a junction box or an inverter, and an appropriate plug terminal 30 can be selected according to actual needs. The fuse holder 20 includes a fuse assembly 22, a base body 24 and an integrally formed insulating shell 26, the terminals 11 of the two cables 10 are fixedly connected to the base body 24 respectively, and the fuse assembly 22 is installed on the The inside of the base body 24 and both ends are electrically connected to the terminal 11 of the cable 10. The fuse assembly 22 is similar to the existing assembly, and both use the principle that the molten body melts when the current is too large so that the passages at both ends are cut off. The electrical connection to the cable 10 can be achieved through lead wires. Specifically, the two ends of the base body 24 are correspondingly provided with sockets 25 for inserting the cables 10 so as to realize electrical connection with the fuse assembly 22, and the terminals 11 of the cables 10 extend into the socket through the sockets 25. The electrical connection between the inside of the body 24 and the fuse assembly 22 , the insulating sheath 26 covers the outside of the body 24 and is sealed and connected with the cable 10 .

Preferably, the insulating sheath 26 is a irradiated cross-linked polyethylene sheath, and the two ends of the insulating sheath 26 are pointed and formed with several annular concave grooves 27 . Polyethylene can undergo irradiation cross-linking reaction under the action of rays, and form macromolecules after cross-linking, which improves the heat-resistant and anti-corrosion grade of polyethylene, and the use of irradiation cross-linked polyethylene shell can strengthen the solar cell connecting wire Excellent anti-aging, anti-radiation and high temperature resistance performance, protect the fuse assembly 22 from the damage of the external harsh environment, and improve the stability of the solar cell operation. The outline of the seat body 24 matches the insulating shell 26, and the insulating shell 26 is covered on the seat body 24 and connected with the terminal 11 of the cable 10 after casting, which has excellent airtightness and structure Compact and practical, the concave groove 27 can also be in a spiral shape, and a logo can be printed on the insulating shell 26, which is convenient for identification and beautiful. Also preferably, the cable 10 is also coated with a layer of irradiated cross-linked polyethylene. Since the cable 10 also needs to be exposed to harsh environments, the cable 10 coated with a layer of irradiated cross-linked polyethylene is heat-resistant. And anti-aging performance is strong.

Preferably, the solar cell connection line further includes two sealing rings 40, the sealing rings 40 are arranged between the insulating shell 26 and the cable 10, and the sealing rings 40 can effectively strengthen the connection of the cable 10 The tightness between the end 11 and the insulating shell 26.

The manufacturing method of the solar battery connecting wire of the present utility model comprises the following steps:

(1): Two cables and two plug terminals are provided, one end of the cable is connected to the plug terminal, and the other end forms a terminal;

(2): Provide a fuse assembly and a seat body for installing the fuse assembly, respectively fix the terminals of the two cables on the seat body and electrically connect them to the terminals of the cables;

(3): An insulating sheath is formed by casting polyethylene on the outside of the base, and the insulating sheath covers the base and is sealed and connected with the cable.

In detail, when manufacturing the solar cell connecting wire of the present utility model, the fuse assembly 22 is installed in the base body 24 first, and the respective terminals 11 of the two cables 10 are passed through the socket 25 of the base body 24 and welded or otherwise Realize the electrical connection with the fuse assembly 22, and then the base body 24 and the cable 10 are cast together on the position of the base body 24 to form an insulating sheath 26 of polyethylene material, and the insulating sheath 26 is at both ends. The tip-shaped part can be hot-pressed to form a number of annular concave grooves 27, which on the one hand makes the structure more compact and is beneficial to drainage, and on the other hand is beneficial to enhancing the sealing performance. After the insulating shell 26 is integrally formed, the polyethylene insulating shell 26 is irradiated by an electron accelerator to become a radiation cross-linked polyethylene shell. Preferably, the cable 10 is covered with a polyethylene layer, and the cables 10 are irradiated together by an electron accelerator to form a radiation cross-linked polyethylene layer.

Compared with the prior art, the solar cell connecting wire of the present invention can be respectively connected with the solar cell and other parts through the plug terminal 30, and when the output current is too large, the setting of the fuse holder 20 can effectively cut off the path for protection , the terminals 11 of the two cables 10 are fixedly connected to the seat body 24 of the fuse holder 20 and electrically connected to the two ends of the fuse assembly 22 respectively, the insulating shell 26 is integrally formed outside the seat body 24, and the fuse assembly 22 , the seat body 24, and the terminal 11 of the cable 10 are sealed and covered, and the structure is compact and small, not only waterproof, corrosion-resistant, but also has good sealing performance, which meets the requirements for use under harsh outdoor environmental conditions, and makes the working performance of the solar cell more stable. reliable.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (5)

1. A connection wire for solar cells, characterized in that: it includes a fuse holder, two cables and two plug terminals, one end of the cable is connected to the plug terminal, and the other end forms a terminal, and the fuse holder includes a fuse assembly, a seat body and an integrally formed insulating shell, the terminals of the two cables are respectively fixedly connected to the base body, the fuse assembly is installed in the base body and both ends are electrically connected to the terminals of the cable respectively, so The insulating sheath wraps the base body and is sealed and connected with the cable. 2. The solar cell connecting wire according to claim 1, wherein the insulating sheath is a radiation cross-linked polyethylene sheath. 3 . The solar cell connecting wire according to claim 2 , characterized in that: both ends of the irradiation cross-linked polyethylene sheath are pointed and formed with several ring-shaped concave grooves. 4 . 4. The solar cell connecting wire according to claim 1, characterized in that: said cable is also coated with a radiation cross-linked polyethylene layer. 5. The solar cell connecting wire according to claim 1, characterized in that: the solar cell connecting wire further comprises two sealing rings, and the sealing rings are arranged between the insulating shell and the cable.

Images