Photovoltaic module junction box capable of improving heat dissipation efficiency

Abstract

The utility model relates to the technical field of junction boxes, and discloses a photovoltaic module junction box capable of improving heat dissipation efficiency, which comprises a bottom plate, a plurality of junction boxes are distributed on the bottom plate at equal intervals, an upper cover of each junction box is provided with a matched sealing cover, and a wire holder is fixedly arranged in each junction box. A wire clamping base matched with the wire holder is fixedly arranged at the end, close to the junction boxes, of the sealing cover, a heat dissipation box is installed between every two adjacent junction boxes, and heat dissipation fans are installed on the two sides of the inner wall of each heat dissipation box. The photovoltaic module connecting wire is led into the clamping groove of the wire holder through the wiring port to be fixed, high efficiency and safety are achieved, and circuit stability is guaranteed. And after the sealing cover is covered, the wire clamping seat performs cooperative protection, and the embedded block and the arc-shaped groove accurately position the wire, so that the wire is comprehensively protected from external interference. In the aspect of heat dissipation, the double-end motor drives the heat dissipation fan to operate, the partition plate ingeniously disperses airflow, the airflow is smoothly discharged through the ventilation net, airflow interference is avoided, the heat dissipation effect is greatly improved, and the temperature is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of junction box technology, and in particular to a photovoltaic module junction box with improved heat dissipation efficiency. Background Technology

[0002] Traditional junction boxes use relatively simple wiring methods, such as ordinary twisting or simple plugging and unplugging, which can easily lead to problems such as loose wires and poor contact. During the daily use of photovoltaic modules, due to factors such as temperature changes and mechanical vibrations, these connection points are prone to faults such as increased resistance, overheating, and even open circuits, affecting the power generation efficiency and stability of the photovoltaic system.

[0003] Furthermore, most traditional junction boxes rely solely on natural heat dissipation. When photovoltaic modules are operating, especially in high-temperature environments or under high loads, the heat generated inside the junction box cannot dissipate in time, leading to excessively high internal temperatures. High temperatures accelerate the aging of electrical components, reduce their performance, and may even cause malfunctions.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the issue that traditional junction boxes often have simple wire connection methods, such as ordinary winding or simple plug-and-play connections, which can easily lead to loose wires and poor contact, this application provides a photovoltaic module junction box that improves heat dissipation efficiency.

[0006] The photovoltaic module junction box for improving heat dissipation efficiency provided in this application adopts the following technical solution:

[0007] A photovoltaic module junction box with improved heat dissipation efficiency includes a base plate with a plurality of junction boxes evenly distributed on the base plate. Each junction box has a matching sealing cover on its top cover. A terminal block is fixedly installed inside each junction box. A wire clamping seat that matches the terminal block is fixedly installed at one end of the sealing cover near the junction box. A heat dissipation box is installed between each pair of adjacent junction boxes, and a cooling fan is installed on both sides of the inner wall of the heat dissipation box.

[0008] Preferably, the junction box has an installation cavity on its inner wall near the heat sink, the installation cavity is connected to the heat sink, and a protective cover adapted to the cooling fan is fixed to the inner wall of the installation cavity by screws.

[0009] Preferably, the outer wall of the junction box has a communicating wiring port, the outer wall of the junction box away from the protective cover is fitted with a heat dissipation filter, and the top of the heat dissipation box is fixedly provided with a ventilation net.

[0010] Preferably, the heat sink has a partition fixed inside, and a dual-head motor is installed at the center of the partition. The output end of the dual-head motor is connected to the cooling fan.

[0011] Preferably, the terminal block has a slot inside, and connectors are fixed on both sides of the top of the terminal block.

[0012] Preferably, the wire clamp is fixedly connected to the inner wall of the sealing cover, and a set of embedded blocks are evenly distributed inside the wire clamp, with an arc-shaped groove on the inner wall of the embedded block.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] This application achieves high efficiency and safety by guiding the photovoltaic module connecting wires through the wiring port into the slot of the terminal block for secure fixing, ensuring circuit stability. After the sealing cover is closed, the terminal block and the terminal block work together for protection, with the embedded block and arc-shaped groove precisely positioning the wires, providing all-around protection against external interference. For heat dissipation, a dual-head motor drives a cooling fan, accelerating airflow within the heat dissipation filter. A partition cleverly disperses the airflow, allowing it to be smoothly discharged through the ventilation mesh, avoiding airflow interference, significantly improving heat dissipation, effectively reducing temperature, extending equipment lifespan, and ensuring the stable and efficient operation of the photovoltaic system. Attached Figure Description

[0015] Figure 1 This is a front view of a photovoltaic module junction box for improving heat dissipation efficiency according to an embodiment of the application.

[0016] Figure 2 This is a schematic diagram of the junction box in the embodiment of the application.

[0017] Figure 3 This is a schematic diagram of the sealing cap structure of the application embodiment.

[0018] Figure 4 This is a schematic diagram of the internal structure of the heat sink in the embodiment of the application.

[0019] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Junction box; 3. Sealing cover; 4. Heat sink; 5. Heat dissipation filter; 6. Terminal block; 7. Mounting cavity; 8. Protective cover; 9. Cooling fan; 10. Ventilation mesh; 11. Connector; 12. Slot; 13. Embedded block; 14. Cable holder; 15. Arc groove; 16. Partition; 17. Dual-head motor; 18. Wiring port. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0021] This application discloses a photovoltaic module junction box for improving heat dissipation efficiency. (Refer to...) Figures 1-2The system includes a base plate 1, on which several junction boxes 2 are evenly distributed. The base plate 1 is fixed with screws, enabling quick and stable positioning of the junction boxes 2 on the photovoltaic modules. Each junction box 2 has a matching sealing cover 3. The outer wall of each junction box 2 has a communicating wiring port 18. A terminal block 6 is fixed inside the junction box 2, and the terminal block 6 has a slot 12 inside. Connectors 11 are fixed to both sides of the top of the terminal block 6. The connecting wires of the photovoltaic modules are extended through the wiring ports 18 on both sides and connected and fixed in the slots 12 inside the terminal block 6. This facilitates wire connection, and the slots 12 effectively fix the wires, preventing loosening and ensuring the stability and safety of the circuit connection, reducing electrical faults caused by wire connection problems.

[0022] In this application, a wire clamping seat 14, adapted to the terminal block 6, is fixedly provided at one end of the sealing cover 3 near the junction box 2. The wire clamping seat 14 is fixedly connected to the inner wall of the sealing cover 3. A set of embedded blocks 13 are evenly distributed inside the wire clamping seat 14, and the inner wall of the embedded blocks 13 has an arc-shaped groove 15. When the sealing cover 3 is closed, the wire clamping seat 14 covers the outside of the wire, the embedded blocks 13 extend into the junction box 6 to position the wire above, and the arc-shaped groove 15 fits against the outer wall of the wire. This series of designs not only protects the wire from the influence of the external environment, such as dust and moisture, but also accurately positions the wire, preventing the wire from moving around randomly inside the junction box 2, further improving the reliability and stability of the wire connection.

[0023] like Figures 3-4 As shown, a heat dissipation box 4 is installed between every two adjacent junction boxes 2, and cooling fans 9 are installed on both sides of the inner wall of the heat dissipation box 4. A partition 16 is fixed inside the heat dissipation box 4, and a dual-head motor 17 is installed at the center of the partition 16. The output of the dual-head motor 17 is connected to the cooling fans 9. When the photovoltaic module is working, the dual-head motor 17 drives the cooling fans 9 on both sides to rotate, directly dissipating heat from the wires. The partition 16 disperses the airflow, allowing it to circulate outwards through the ventilation mesh 10, avoiding airflow interference, optimizing the heat dissipation path, and greatly improving the overall heat dissipation effect.

[0024] In this application, a mounting cavity 7 is formed on the inner wall of the junction box 2 near the heat sink 4. The mounting cavity 7 communicates with the heat sink 4, and a protective cover 8 adapted to the cooling fan 9 is fixed to the inner wall of the mounting cavity 7 by screws. A heat dissipation filter 5 is snapped onto the outer wall of the junction box 2 away from the protective cover 8, and a ventilation mesh 10 is fixed to the top of the heat sink 4. Good heat dissipation can effectively reduce the temperature of the wires and the inside of the junction box 2, prevent problems such as wire aging and short circuits caused by excessive temperature, extend the service life of the photovoltaic module and the junction box 2, and improve the stability and power generation efficiency of the photovoltaic system.

[0025] The implementation principle of a photovoltaic module junction box for improving heat dissipation efficiency according to an embodiment of this application is as follows:

[0026] In use, the junction box 2 is positioned on the photovoltaic module by fixing the base plate 1 with screws. Then, the connecting wires of the photovoltaic module are extended through the wiring ports 18 on both sides and connected and fixed in the slots 12 inside the junction box 6. The sealing cover 3 is then placed on top, and the wire clamp 14 covers the outside of the wires. The embedded block 13 extends into the junction box 6 to position the wires above it. The arc-shaped groove 15 fits snugly against the outer wall of the wires, achieving a good positioning effect. During the operation of the photovoltaic module, the dual-head motor 17 drives the cooling fans 9 on both sides to rotate and dissipate heat from the wires, accelerating the airflow inside the heat dissipation filter 5. The partition 16 disperses the airflow and directs it outward through the ventilation mesh 10, preventing airflow interference and greatly improving the overall heat dissipation effect.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A photovoltaic module junction box with improved heat dissipation efficiency, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a plurality of terminal boxes (2) distributed equidistantly, the terminal box (2) is provided with a sealing cover (3) matched, the terminal box (2) is provided with a terminal seat (6) fixedly arranged in the inside, the sealing cover (3) is provided with a wire clamping seat (14) matched with the terminal seat (6) fixedly arranged at one end close to the terminal box (2), and the adjacent two terminal boxes (2) are provided with a heat dissipation box (4) installed between the two terminal boxes (2), and the heat dissipation box (4) is provided with a heat dissipation fan (9) installed on the inner wall of the heat dissipation box (4).

2. The junction box of claim 1, wherein: The terminal box (2) is provided with an installation cavity (7) opened in the inner wall of one end close to the heat dissipation box (4), the installation cavity (7) is communicated with the heat dissipation box (4), and the installation cavity (7) is provided with a protective cover (8) matched with the heat dissipation fan (9) fixedly arranged on the inner wall of the installation cavity (7).

3. The junction box of claim 1, wherein: The outer wall of the terminal box (2) is provided with a wire inlet (18) communicated, the outer wall of one end away from the protective cover (8) of the terminal box (2) is provided with a heat dissipation filter screen (5) clamped, and the top of the heat dissipation box (4) is provided with a ventilation net (10).

4. The junction box of claim 1, wherein: The heat dissipation box (4) is provided with a partition plate (16) fixedly arranged in the inside, the partition plate (16) is provided with a double-head motor (17) installed at the center of the partition plate (16), and the output end of the double-head motor (17) is in transmission connection with the heat dissipation fan (9).

5. The junction box of claim 1, wherein: The terminal seat (6) is provided with a clamping groove (12) opened in the inside, and the terminal seat (6) is provided with a connecting piece (11) fixedly arranged on both sides of the top of the terminal seat (6).

6. The junction box of claim 1, wherein: The wire clamping seat (14) is fixedly connected with the inner wall of the sealing cover (3), a group of embedded blocks (13) are equidistantly distributed in the inside of the wire clamping seat (14), and the inner wall of the embedded block (13) is provided with an arc-shaped groove (15).

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