Marine photovoltaic junction box with multiple protection structures

Abstract

The utility model discloses a kind of offshore photovoltaic junction box with multiple protection structure, it is related to photovoltaic junction box technical field, including junction box body, the front of junction box body is provided with wiring recess, wiring recess is equipped with wire pressing pad, the top of wire pressing pad is equipped with wire pressing block, the front end of wiring recess is equipped with opening, the rear end of wiring recess is opened with through-hole, sealing ring is equipped in through-hole;The front end of the photovoltaic junction box has adopted the wire pressing area of lengthened design, so that cable fixing is more solid and reliable;Sealing ring is additionally installed in wire hole, so that the overall waterproof effect of junction box is better, also make it have good corrosion resistance, satisfy the demand of offshore photovoltaic module junction box.

Description

Technical Field

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

[0002] With the full development of terrestrial new energy resources, people urgently need to find the next resource territory. The abundant wind and solar energy resources of the ocean and lakes provide more development space, especially for coastal countries with high population density and scarce land resources.

[0003] Offshore photovoltaic systems are exposed to unobstructed sunlight, resulting in more abundant sunshine. Furthermore, moisture evaporation can lower the operating temperature of the photovoltaic modules, thereby increasing power generation. However, offshore photovoltaic systems also face adverse factors such as strong winds, waves, and strong corrosion. Therefore, offshore photovoltaic modules require more stable and corrosion-resistant materials and structures.

[0004] As the junction box responsible for transmission and connection between photovoltaic modules, it also needs stronger corrosion resistance and connection stability. Ordinary photovoltaic junction boxes cannot adapt to the high humidity environment on the sea surface and resist seawater corrosion. Once the waterproof of the junction box fails, it can easily cause module failure or even more serious losses. Its waterproofness and stability cannot meet the requirements for marine use. Utility Model Content

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] A marine photovoltaic junction box with multiple protective structures includes a junction box body, a wiring groove at the front of the junction box body, a wire pressing pad inside the wiring groove, a wire pressing block on top of the wire pressing pad, an opening at the front end of the wiring groove, a through hole at the rear end of the wiring groove, and a sealing ring inside the through hole.

[0007] Furthermore, the junction box includes a body and a cover, which are fixed together by snap-fit, and a diode is provided inside the body.

[0008] Furthermore, the outer and inner circular surfaces of the sealing ring are provided with multiple water-retaining rings.

[0009] Furthermore, the mating surfaces of the pressure pad and the pressure block are provided with arc-shaped notches, and pressure ribs are provided inside the arc-shaped notches.

[0010] Furthermore, the mating surface of the pressure pad is provided with multiple ultrasonic lines.

[0011] Furthermore, the pressure block has a convex shape, and the front part of the pressure block is inserted into the opening.

[0012] Furthermore, the pressure pad has protrusions on both sides, and the mating surface of the wiring groove has corresponding notches, with the protrusions embedded in the notches.

[0013] The beneficial effects of this utility model are:

[0014] The front end of this photovoltaic junction box features an extended wire clamping area, making the cable fixation more robust and reliable. A sealing ring is installed inside the wire fixing hole to improve waterproofing, resulting in better overall waterproofing of the junction box, more stable cable connections, and good corrosion resistance, thus meeting the requirements for junction boxes used in offshore photovoltaic modules. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the junction box of this utility model;

[0016] Figure 2 This is an exploded view of the junction box structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the junction box structure of this utility model;

[0018] In the diagram: 1. Junction box body, 2. Wire clamping pad, 3. Wire clamping block, 4. Sealing ring, 11. Wire groove, 12. Opening, 13. Through hole, 14. Box body, 15. Box cover, 16. Diode, 17. Notch, 21. Ultrasonic wire, 22. Protrusion, 23. Wire clamping rib, 41. Water-blocking ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figure 1-2 As shown, a marine photovoltaic junction box with multiple protective structures includes a junction box body 1. A wiring groove 11 is provided at the front of the junction box body 1. A wire pressing pad 2 is provided inside the wiring groove 11, and a wire pressing block 3 is provided on top of the wire pressing pad 2. An opening 12 is provided at the front end of the wiring groove 11, and a through hole 13 is provided at the rear end of the wiring groove 11. A sealing ring 4 is provided inside the through hole 13. In this embodiment, the cable is located between the wire pressing pad 2 and the wire pressing block 3, and passes through the sealing ring 4 into the junction box body 1. The wire pressing pad 2 and the wire pressing block 3 cooperate to fix and press the cable tightly, preventing loosening and providing initial waterproofing. The sealing ring 4 is located between the cable and the through hole 13, thereby preventing water from entering through the through hole 13 and sealing the junction box.

[0021] like Figure 2-3As shown, the junction box 1 includes a body 14 and a cover 15, which are fixed together by snap-fit. A diode 16 is installed inside the body 14. The diode acts as a bypass inside the junction box, bypassing the blocked portion when the solar panel is shaded, thus preventing the panel from being damaged by overheating.

[0022] like Figure 2-3 As shown, multiple water-retaining rings 41 are provided on both the outer and inner circular surfaces of the sealing ring 4. This improves the sealing and waterproofing effect of the sealing ring 4.

[0023] like Figure 2-3 As shown, both the mating surfaces of the wire clamping pad 2 and the wire clamping block 3 are provided with arc-shaped notches, and wire clamping ribs 23 are provided inside the arc-shaped notches. This increases the frictional resistance between the wire and the cable, improving the connection tightness.

[0024] like Figure 2-3 As shown, the mating surface of the wire clamping pad 2 is provided with multiple ultrasonic lines 21. After assembling the wire clamping pad 2 and the wire clamping block 3, the two are ultrasonically welded together to make the cable more securely fixed.

[0025] like Figure 2-3 As shown, the wire clamping block 3 has a convex shape, and the front of the wire clamping block 3 is locked inside the opening 12. This prevents the wire clamping block 3 from sliding out of the wiring groove 11, making the cable connection more secure.

[0026] like Figure 2-3 As shown, the wire clamping pad 2 has protrusions 22 on both sides, and the mating surface of the wiring groove 11 has corresponding recesses 17, with the protrusions 22 embedded in the recesses 17. This prevents the wire clamping pad 2 from sliding out of the wiring groove 11, making the cable connection more secure.

[0027] The front end of this photovoltaic junction box features an extended wire clamping area, making the cable fixation more robust and reliable. A sealing ring is installed inside the wire fixing hole to improve waterproofing, resulting in better overall waterproofing of the junction box, more stable cable connections, and good corrosion resistance, thus meeting the requirements for junction boxes used in offshore photovoltaic modules.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", "top", "bottom", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A marine photovoltaic junction box with a multi-layered protection structure, characterized in that, The device includes a junction box body (1), a wiring groove (11) is provided at the front of the junction box body (1), a wire pressing pad (2) is provided in the wiring groove (11), a wire pressing block (3) is provided on the top of the wire pressing pad (2), an opening (12) is provided at the front end of the wiring groove (11), a through hole (13) is provided at the rear end of the wiring groove (11), and a sealing ring (4) is provided in the through hole (13).

2. The marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The junction box (1) includes a box body (14) and a box cover (15), which are fixed together by a snap fastener. A diode (16) is provided inside the box body (14).

3. A marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The sealing ring (4) has multiple water-blocking rings (41) on both its outer and inner surfaces.

4. A marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The mating surfaces of the pressure pad (2) and the pressure block (3) are provided with arc-shaped notches, and pressure ribs (23) are provided in the arc-shaped notches.

5. A marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The mating surface of the pressure pad (2) is provided with multiple ultrasonic lines (21).

6. A marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The pressure block (3) has a convex shape, and the front part of the pressure block (3) is inserted into the opening (12).

7. A marine photovoltaic junction box with multiple protection structures according to claim 1, characterized in that, The pressure pad (2) has protrusions (22) on both sides, and the mating surface of the wiring groove (11) has corresponding notches (17), and the protrusions (22) are embedded in the notches (17).

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