Photovoltaic junction box of aluminum conductor

Abstract

The utility model relates to the technical field of junction boxes, in particular to a photovoltaic junction box of an aluminum wire, which comprises a photovoltaic junction box main body, a negative electrode box body is arranged on the left side of the photovoltaic junction box main body, a positive electrode box body is arranged on the right side of the photovoltaic junction box main body, and the terminal of the positive electrode box body and the terminal of the negative electrode box body are connected with an aluminum wire assembly. The aluminum wire assembly comprises a connecting end connected to the wiring end of the positive electrode box body and the wiring end of the negative electrode box body, and one end of the connecting end is provided with an insulation protection wrapping layer. According to the photovoltaic junction box of the aluminum wire, the aluminum wire is used for replacing a copper wire, so that the cost is lower, the weight is lighter, and the cost is lower; aluminum reacts with oxygen in the air to quickly generate an oxidation film, further oxidation can be prevented, and the aluminum wire is suitable for high-voltage, large-section and large-span overhead power transmission equipment, so that the use scene of the photovoltaic junction box is increased, and the use efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to a photovoltaic junction box with aluminum wires. Background Technology

[0002] The photovoltaic junction box is a key component of a photovoltaic module, responsible for transmitting the current generated by the photovoltaic module cells to the outside. The photovoltaic junction box is generally located on the back of the photovoltaic module, but a few photovoltaic junction boxes are located on the front of the photovoltaic module. The photovoltaic junction box usually contains one or more bypass diodes. The bypass diodes are used to prevent the photovoltaic module from losing power generation efficiency and causing safety risks when hot spot effect occurs.

[0003] A photovoltaic junction box was proposed in patent CN219678410U. This patent includes a box body, an opening, a connecting part, a guide part, an inlet bevel, a first mating part, a connecting part, a groove, a bending part, and an external cable. By setting a protective cover-like cover, the protective and waterproof performance of the photovoltaic junction box is greatly improved. Furthermore, the cover is easy to install and remove, simplifying the assembly process and facilitating assembly, maintenance, and replacement, ensuring long-term normal operation and improving long-term reliability. The inclusion of a sealing element ensures the overall sealing and waterproof performance of the photovoltaic junction box while facilitating assembly and maintenance, enhancing long-term waterproof performance. The sealing cover, box cover, and sealing element together constitute a multi-layered sealing and protective structure, giving the photovoltaic junction box better safety, sealing, waterproofness, and long-term reliability. The photovoltaic junction box can cope with various extreme environments, including humid climates with high rainfall and marine photovoltaic scenarios, effectively reducing the risk of waterproof failure and water ingress into electrical connectors. However, this patent still has the following problems:

[0004] The photovoltaic junction box mentioned above is generally connected to external cables via copper wires. Copper wires are expensive and suitable for relatively simple environments, but are not convenient for use in more complex environments, such as high-voltage power transmission equipment.

[0005] To address the above issues, a photovoltaic junction box with aluminum wires needs to be designed to overcome these problems. Utility Model Content

[0006] The main objective of this invention is to provide a photovoltaic junction box with aluminum wires, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A photovoltaic junction box with aluminum conductors includes a photovoltaic junction box body, a negative electrode box body is provided on the left side of the photovoltaic junction box body, a positive electrode box body is provided on the right side of the photovoltaic junction box body, and aluminum conductor assemblies are connected to the terminals of the positive electrode box body and the negative electrode box body.

[0009] The aluminum conductor assembly includes a connection end that connects to the terminals of the positive electrode box and the negative electrode box. One end of the connection end is provided with an insulating protective wrapping layer. The inner side of the insulating protective wrapping layer is wrapped with a corrosion-resistant wrapping layer, and the inner wall of the corrosion-resistant wrapping layer is wrapped with an aluminum conductor.

[0010] As a preferred embodiment of this utility model, the bottom of the photovoltaic junction box body is provided with an intermediate box body, the interior of the intermediate box body is provided with a first diode, the upper two ends of the first diode are respectively provided with a first copper plate, and the upper side of the first copper plate is provided with a first tin block.

[0011] As a preferred embodiment of this utility model, a second diode is installed inside the positive electrode box, a second copper plate is respectively provided at both ends of the upper side of the second diode, a second tin block is installed on the upper side of the second copper plate, and a first pressure block is installed on the upper side of the positive electrode box.

[0012] As a preferred embodiment of this utility model, a third diode is provided inside the negative electrode box, a third copper plate is provided at both ends of the third diode, a third tin block is installed on the upper side of the third copper plate, and a second pressure block is installed on the upper side of the negative electrode box.

[0013] As a preferred embodiment of this utility model, a heat dissipation hole is provided on the upper side of the photovoltaic junction box body.

[0014] As a preferred embodiment of this utility model, the first diode is fixedly installed between the first diode and the intermediate housing, the first copper plate is fixedly installed between the first copper plate and the intermediate housing, and the first tin block is fixedly connected to the first copper plate.

[0015] As a preferred embodiment of this utility model, the connecting end is fixedly connected to the negative electrode box, the aluminum wire is fixedly connected to the corrosion-resistant wrapping layer, and the corrosion-resistant wrapping layer is fixedly connected to the insulating protective wrapping layer.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this invention, a photovoltaic junction box with aluminum conductors is designed, which replaces copper conductors, resulting in lower cost and lighter weight. Aluminum reacts quickly with oxygen in the air to form an oxide film, which can prevent further oxidation. Aluminum conductors are suitable for high-voltage, large-section, and long-span overhead power transmission equipment, thereby increasing the application scenarios of photovoltaic junction boxes and improving their efficiency. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the main body of the photovoltaic junction box of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the positive electrode box and the negative electrode box of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the aluminum wire assembly of this utility model.

[0022] In the diagram: 1. Photovoltaic junction box body; 2. Heat dissipation hole; 3. Positive electrode box; 4. Negative electrode box; 5. Aluminum conductor assembly; 6. Insulation protective wrapping layer; 7. Corrosion resistant wrapping layer; 8. Aluminum conductor; 9. Connection end; 10. Intermediate box; 11. First copper plate; 12. First solder block; 13. First diode; 14. Second diode; 15. Second copper plate; 16. Second solder block; 17. First pressure block; 18. Third diode; 19. Third copper plate; 20. Third solder block; 21. Second pressure block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1-3 As shown, a photovoltaic junction box with aluminum conductors includes a photovoltaic junction box body 1, a negative electrode box 4 is provided on the left side of the photovoltaic junction box body 1, a positive electrode box 3 is provided on the right side of the photovoltaic junction box body 1, and an aluminum conductor assembly 5 is connected to the terminals of the positive electrode box 3 and the negative electrode box 4.

[0025] The aluminum conductor assembly 5 includes a connection terminal 9 that connects the terminals of the positive electrode box 3 and the negative electrode box 4. One end of the connection terminal 9 is provided with an insulating protective wrapping layer 6. The inner side of the insulating protective wrapping layer 6 is wrapped with a corrosion-resistant wrapping layer 7, and the inner wall of the corrosion-resistant wrapping layer 7 is wrapped with an aluminum conductor 8.

[0026] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3As shown, a middle box 10 is provided at the bottom of the photovoltaic junction box body 1. A first diode 13 is provided inside the middle box 10. A first copper plate 11 is provided at both ends of the upper side of the first diode 13. A first solder block 12 is installed on the upper side of the first copper plate 11. A second diode 14 is installed inside the positive electrode box 3. A second copper plate 15 is provided at both ends of the upper side of the second diode 14. A second solder block 16 is installed on the upper side of the second copper plate 15. A first pressure block 17 is installed on the upper side of the positive electrode box 3. A third diode 18 is provided inside the negative electrode box 4. A third copper plate 19 is provided at both ends of 8. A third tin block 20 is installed on the upper side of the third copper plate 19. A second pressure block 21 is installed on the upper side of the negative electrode box 4. A heat dissipation hole 2 is opened on the upper side of the photovoltaic junction box body 1. The first diode 13 is fixedly installed between the first copper plate 11 and the middle box 10. The first tin block 12 is fixedly connected to the first copper plate 11. The connecting end 9 is fixedly connected to the negative electrode box 4. The aluminum wire 8 is fixedly connected to the corrosion-resistant wrapping layer 7. The corrosion-resistant wrapping layer 7 is fixedly connected to the insulating protective wrapping layer 6.

[0027] The aluminum conductor assembly 5 includes an insulating protective wrapping layer 6, a corrosion-resistant wrapping layer 7, and aluminum conductors 8. The number of aluminum conductors 8 is set in several groups. The insulating protective wrapping layer 6 provides insulation, and the corrosion-resistant wrapping layer 7 increases corrosion resistance.

[0028] The working process of this utility model is as follows: In the photovoltaic junction box using the aluminum wire designed in this scheme, during operation, a first diode 13 is installed inside the intermediate box 10. A first copper plate 11 is installed at both ends of the upper side of the first diode 13, and a first solder block 12 is installed on the upper side of the first copper plate 11. The negative electrode box 4 houses the first diode 13, a third copper plate 19, and a third solder block 20. One end of the negative electrode box 4 is connected to a connecting terminal 9, and one end of the connecting terminal 9 is connected to an aluminum wire 8. The positive electrode box 3 houses a second diode 14, and the upper side of the second diode 14... A second copper plate 15 is installed at each end, and a second tin block 16 is installed on the upper side of the second copper plate 15. A first pressure block 17 is installed in the middle of the upper side of the positive electrode box 3. One end of the positive electrode box 3 is connected to another set of connection terminals 9, which facilitates connection through aluminum wires 8. By replacing copper wires with aluminum wires, the weight of aluminum cables is 30% of that of copper cables, resulting in lower construction and transportation costs. Copper rods are 3.5 times more expensive than aluminum rods, and copper is 3.3 times heavier than aluminum. Therefore, aluminum cables are cheaper than copper cables, saving costs and improving the performance of the photovoltaic junction box.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic junction box with aluminum conductors, comprising a photovoltaic junction box body (1), characterized in that: A negative electrode box (4) is provided on the left side of the photovoltaic junction box body (1), and a positive electrode box (3) is provided on the right side of the photovoltaic junction box body (1). An aluminum wire assembly (5) is connected to the wiring terminals of the positive electrode box (3) and the negative electrode box (4). The aluminum wire assembly (5) includes a connection end (9) connected to the terminals of the positive electrode box (3) and the negative electrode box (4). One end of the connection end (9) is provided with an insulating protective wrapping layer (6). The inner side of the insulating protective wrapping layer (6) is wrapped with a corrosion-resistant wrapping layer (7). The inner wall of the corrosion-resistant wrapping layer (7) is wrapped with an aluminum wire (8).

2. The photovoltaic junction box with aluminum conductor according to claim 1, characterized in that: The photovoltaic junction box body (1) has an intermediate box (10) at its bottom end. The intermediate box (10) has a first diode (13) inside. The upper ends of the first diode (13) are respectively provided with a first copper plate (11), and a first tin block (12) is installed on the upper side of the first copper plate (11).

3. A photovoltaic junction box with aluminum conductors according to claim 1, characterized in that: The positive electrode box (3) is equipped with a second diode (14), and a second copper plate (15) is provided at both ends of the upper side of the second diode (14). A second tin block (16) is installed on the upper side of the second copper plate (15), and a first pressure block (17) is installed on the upper side of the positive electrode box (3).

4. A photovoltaic junction box with aluminum conductors according to claim 1, characterized in that: The negative electrode box (4) is provided with a third diode (18) inside. A third copper plate (19) is provided at both ends of the third diode (18). A third tin block (20) is installed on the upper side of the third copper plate (19). A second pressure block (21) is installed on the upper side of the negative electrode box (4).

5. A photovoltaic junction box with aluminum conductors according to claim 1, characterized in that: The photovoltaic junction box body (1) has heat dissipation holes (2) on its upper side.

6. A photovoltaic junction box with aluminum conductors according to claim 2, characterized in that: The first diode (13) is fixedly installed between the intermediate box (10), the first copper plate (11) is fixedly installed between the intermediate box (10), and the first tin block (12) is fixedly connected to the first copper plate (11).

7. A photovoltaic junction box with aluminum conductors according to claim 1, characterized in that: The connecting end (9) is fixedly connected to the negative electrode box (4), the aluminum wire (8) is fixedly connected to the corrosion-resistant wrapping layer (7), and the corrosion-resistant wrapping layer (7) is fixedly connected to the insulating protective wrapping layer (6).

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