Leakage-proof photovoltaic power generation assembly junction box

Abstract

The utility model relates to photovoltaic junction box technical field, especially in a kind of photovoltaic power generation component junction box of leakage protection, comprising: box, the box is detachably connected with several wiring frame in;The box outer wall is equipped with the slot;Cover is connected in the box, and the cover is connected in the slot;Limiting structure, the limiting structure includes the fixed base below the box and the clamping plate detachably connected in the fixed base.Cover moves downward and enters positioning groove after rotating and making clamping block, limit strip in limiting structure is inserted into corresponding vertical slot, can prevent cover from rotating under accidental bump, prevent rainwater from infiltrating caused by cover disengaging box;The first horizontal plate of clamping plate is abutted on the upper end surface of cover, and clamping plate is fixedly connected in fixed base, further position limiting of cover is formed, further prevent its accidental bump rotation, form stable, effectively prevent the junction box of rainwater from entering, to prevent leakage.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, and more specifically, to a photovoltaic power generation module junction box that is leak-proof. Background Technology

[0002] A photovoltaic (PV) module junction box is a connector between a solar panel and a solar charging control device. Patent CN218041345U discloses a leakage-proof PV module junction box. After the PV cable enters the box through a conduit and is connected, the connecting ring's surface locking block aligns with the connecting groove on the box's surface. The sealing cover then slides downwards and engages with the box's surface. Rotating the sealing cover causes the connecting ring to rotate the connecting locking block, which then moves through the connecting groove into an annular groove. The locking block engages with the inner wall of the annular groove, sealing the box and preventing rainwater from entering and causing water ingress and leakage at the cable connections. However, this leakage-proof PV module junction box lacks a fixing or limiting structure after the sealing cover rotates and engages with the box. There is a possibility that the connecting locking block may disengage from the connecting groove if the sealing cover is accidentally touched, causing the sealing cover to detach from the box and thus failing to provide a proper seal, resulting in leakage. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a photovoltaic power generation module junction box that prevents leakage.

[0004] A leakage-proof junction box for photovoltaic power generation modules, comprising:

[0005] The box body has several wiring frames detachably connected inside; the outer wall of the box body is provided with slots.

[0006] A cover is snapped into the box body, and the cover is snapped into the slot;

[0007] The limiting structure includes a fixed base located below the box body and a snap-fit ​​plate detachably connected to the fixed base.

[0008] Furthermore, the top opening of the box includes a circular bottom plate and bottom side plates;

[0009] The outer side of the bottom plate is provided with equally spaced slots, each slot including a vertical slot that runs vertically through the top and bottom and a positioning slot with an opening on the left side; the vertical slot and the positioning slot are connected.

[0010] Furthermore, the lower end face of the bottom side plate is higher than the lower end face of the bottom plate.

[0011] Furthermore, a rubber gasket is provided on the top of the bottom side plate.

[0012] Furthermore, the base plate has a plurality of first connection holes for connecting the wiring frame.

[0013] Furthermore, the bottom opening of the cover includes a circular top plate and a top side plate; the inner wall of the top side plate is provided with equally spaced locking blocks, which are adapted to the positioning groove.

[0014] Furthermore, the wiring frame includes an upward-facing receiving groove and a top cover. A first connecting ear is provided on the bottom side of the receiving groove, and the first connecting ear has a second connecting hole that is adapted to the first connecting hole.

[0015] Furthermore, the front and rear sides of the receiving groove are fixedly connected to a wiring pipe, and the wiring pipe also penetrates the bottom side plate of the box body;

[0016] The conduit is used to pass through the photovoltaic cable, and the end of the conduit is connected to the photovoltaic cable through a locking tube.

[0017] Furthermore, the fixed base includes a bottom limiting ring and a limiting strip fixed to the upper end face of the bottom limiting ring, the limiting strip being adapted to the vertical slot;

[0018] The bottom limiting ring is also connected to a second connecting ear, which has a third connecting hole for fixing the junction box in the installation position.

[0019] Furthermore, the snap-fit ​​plate includes a first horizontal plate, a vertical plate, and a second horizontal plate. One end of the first horizontal plate is fixed to the top of the vertical plate, and the bottom end of the vertical plate is fixed to the second horizontal plate. The first horizontal plate and the second horizontal plate are located on both sides of the vertical plate, respectively.

[0020] The first horizontal plate abuts against the upper end face of the cover, and the second horizontal plate has a fourth connecting hole that matches the third connecting hole. By using bolts to pass through the corresponding fourth connecting hole and the third connecting hole, the junction box can be fixedly installed in the designated position.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This leak-proof photovoltaic module junction box features a cover that moves downwards and rotates to engage a locking block in a positioning groove. A limiting strip in the limiting structure inserts into the corresponding vertical slot, preventing the cover from rotating accidentally and thus preventing rainwater ingress. The first horizontal plate of the locking plate then abuts against the upper surface of the cover and is fixedly connected to the base, further limiting the cover's position and preventing accidental rotation. This creates a stable junction box that effectively prevents rainwater ingress and thus prevents leakage. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic power generation module junction box for preventing leakage current in the embodiment.

[0025] Figure 2 This is an exploded view of the junction box of the photovoltaic power generation module for preventing leakage current in the embodiment.

[0026] Figure 3 This is an exploded view of the photovoltaic power generation module junction box for preventing leakage current in the embodiment.

[0027] Figure 4 This is a schematic diagram of the housing and wiring frame in the embodiment.

[0028] Figure 5 This is an exploded view of the wiring frame in the embodiment.

[0029] In the diagram: 1. Base plate; 11. First connecting hole;

[0030] 2. Bottom and side plates; 21. Vertical slots; 22. Positioning slots; 23. Rubber gaskets; 24. Perforations;

[0031] 3. Wiring frame; 31. Receiving slot; 32. Top cover; 33. First connecting lug; 331. Second connecting hole;

[0032] 4. Connecting conduit; 5. Photovoltaic cable; 6. Locking tube;

[0033] 7. Cover; 71. Top plate; 72. Top side plate; 73. Locking block;

[0034] 8. Fixed base; 81. Bottom limiting ring; 82. Limiting strip; 83. Second connecting ear; 831. Third connecting hole;

[0035] 9. Connecting plate; 91. First horizontal plate; 92. Second horizontal plate; 921. Fourth connecting hole; 93. Vertical plate. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1-5 As shown, a photovoltaic power generation module junction box with leakage protection includes a box body and a cover 7. After the cover 7 is placed on the box body, it is fixed by a limiting structure to prevent the box body and the cover 7 from separating.

[0038] In this embodiment, as Figures 1-4 As shown, the top of the box is open and includes a circular base plate 1 and a bottom side plate 2; several wiring frames 3 are detachably connected inside the box; slots are provided on the outer wall of the box, and the cover is snapped into the slots of the box.

[0039] Specifically, in the housing, the bottom plate 1 is a circular plate, and the bottom plate 1 has several first connecting holes 11 for connecting the wiring frame 3. The outer side of the bottom side plate 2 is provided with equally spaced slots, including vertical slots 21 that run vertically through the top and bottom and positioning slots 22 that open on the left side. The vertical slots 21 and positioning slots 22 are connected.

[0040] The lower end face of the bottom side plate 2 is higher than the lower end face of the bottom plate 1, making it easier to place in the fixed base of the limiting structure. A rubber gasket 23 is also provided on the top of the bottom side plate 2. When the cover is rotated and snapped into the box, the rubber gasket 23 abuts against the lower end face of the top plate of the cover, preventing rainwater from entering the box.

[0041] Several parallel wiring frames 3 are arranged inside the box. Each wiring frame 3 includes an upward-opening receiving groove 31 and a top cover 32. A first connecting lug 33 is provided on the bottom side of the receiving groove 31. The first connecting lug 33 has a second connecting hole 331, which is adapted to the first connecting hole 11 of the base plate 1. In this embodiment, four rows and six columns of first connecting holes 11 are provided on the base plate 1 of the box. Correspondingly, five sets of wiring frames 3 can be arranged side by side inside the box. Two first connecting lugs 33 are provided on the left front side of the receiving groove 31 of the wiring frame 3, and two first connecting lugs 33 are provided on the right rear side of the receiving groove 31. The first connecting hole 11 on the base plate 1 of the box 1 is a threaded hole. A bolt is inserted through the second connecting hole 331 and then screwed into the first connecting hole 11 to fix the wiring frame inside the box. When one or more sets of wiring frames 3 need to be cleaned, damaged, or replaced, they can be removed individually and a new wiring frame can be installed. In the wiring frame 3, the top cover 32 is snapped onto the top of the receiving groove 31, which further prevents rainwater from entering the box and ensures the leakage prevention effect.

[0042] Furthermore, such as Figures 2-5As shown, in the wiring frame 3, the front and rear sides of the receiving groove 31 are fixedly connected to the wiring pipe 4. The wiring pipe 4 also penetrates the bottom side plate 2 of the box body. Correspondingly, the bottom side plate 2 has a corresponding through hole 24. After the wiring pipe 4 passes through the corresponding through hole 24, structural sealant is injected at the through hole 24 to prevent rainwater from seeping in. The photovoltaic cable 5 is installed through the wiring pipe 4. The end of the wiring pipe 4 is threadedly connected to the locking tube 6 to connect the photovoltaic cable 5. The end of the wiring pipe 4 has a locking clearance groove. Multiple locking clearance grooves are symmetrically distributed around the axis of the wiring pipe 4. The inner wall of the locking tube 6 is provided with a sealing ring. The inner wall of the locking clearance groove is connected to the inner wall of the wiring pipe 4. In this embodiment, the connection method between the wiring pipe 4 and the photovoltaic cable 5 through the locking tube 6 is the same as the connection method in patent CN218041345U. It is an existing connection method known to those skilled in the art and will not be described in detail here.

[0043] In this embodiment, the bottom opening of the cover 7 includes a circular top plate 71 and a top side plate 72. The inner wall of the top side plate 72 is provided with equally spaced locking blocks 73, which are adapted to the positioning grooves 22. Further, the outer side of the bottom side plate 2 is provided with four sets of equally spaced slots, namely four sets of interconnected vertical slots 21 and positioning grooves 22. Correspondingly, four locking blocks are also equally spaced. When the cover 7 is placed on the box, the cover 7 moves downwards, and the locking blocks 73 first move downwards along the vertical slots 21. When the rubber gasket 23 at the top of the bottom side plate 2 of the box abuts against the lower end face of the top plate 71 of the cover, the locking blocks 73 are flush with the positioning grooves 22. Then, the cover 7 is rotated so that the locking blocks 73 are screwed into the corresponding positioning grooves 22.

[0044] In this embodiment, after the cover 7 covers the box, a limiting structure is used to further fix and limit it. The limiting structure includes a fixed base 8 located below the box and a snap-fit ​​plate 9 detachably connected to the fixed base.

[0045] Specifically, the fixed base 8 includes a bottom limiting ring 81 and a limiting strip 82 fixed to the upper surface of the bottom limiting ring 81. The limiting strip 82 is adapted to the vertical slot 21 and is also provided in four places. The bottom limiting ring 81 is circular, and the limiting strip is a vertically arranged plate with an arc. A second connecting ear 83 is also connected to the outside of the bottom limiting ring 81. The second connecting ear 83 has a third connecting hole 831 for fixing the junction box in the installation position.

[0046] The snap-fit ​​plate 9 includes a first horizontal plate 91, a vertical plate 93, and a second horizontal plate 92. One end of the first horizontal plate 91 is fixed to the top of the vertical plate 93, and the bottom end of the vertical plate 93 is fixed to the second horizontal plate 92. The first horizontal plate 91 and the second horizontal plate 92 are located on opposite sides of the vertical plate 93. The first horizontal plate 91 abuts against the upper surface of the top plate 71 in the cover 7. The second horizontal plate 92 has a fourth connecting hole 921 that matches the third connecting hole 831. By using bolts to pass through the corresponding fourth connecting hole 921 and third connecting hole 831, the junction box can be fixedly installed in the designated position. When limiting the junction box, the box is placed in the fixed base 8, and the bottom plate 1 of the box is precisely positioned within the bottom limiting ring 81. At the same time, each limiting strip 82 is inserted into the vertical slot 21 of the bottom side plate 2. Then, the snap-fit ​​plate 9 is installed, with its second horizontal plate 92 located above the second connecting ear 83, and the first horizontal plate 91 abutting against the upper surface of the cover 7. When wiring or adjustments are needed inside the junction box, loosen the bolts but do not unscrew them. Then rotate the snap-fit ​​plate 9 so that the first horizontal plate 91 moves away from the cover 7 and no longer limits the cover 7. At this time, rotate the cover 7 so that the snap-fit ​​block 3 disengages from the positioning groove 22 and moves upward along the vertical slot 21 until the cover 7 is completely detached from the box. Then open the top cover 32 of the wiring frame 3 to perform the operation.

[0047] The photovoltaic power generation module junction box provided in this embodiment has a locking structure for securing the box body and cover 7 after they are snapped together, thus preventing the cover 7 from separating from the box body. Simultaneously, the structure of the cover 7 and the rubber gasket effectively prevents rainwater from entering the junction box. The top cover design of the wiring frame 3 further prevents rainwater from entering. This double rainproof design effectively prevents rainwater from entering the junction box and causing leakage.

[0048] The photovoltaic power generation module junction box provided in this embodiment is used by first placing the fixed base 8 in the limiting structure in the designated installation position. Each wiring frame 3 is installed inside the box. After connecting the corresponding photovoltaic cables 5, they are placed in the receiving groove 31 and pass through the wiring conduit. Since the wiring conduit extends to the outside of the bottom side plate 2 of the box, the photovoltaic cables are then fixed to the free end of the wiring conduit 4 using the locking tube 6, effectively preventing rainwater from leaking into the free end of the wiring conduit 4, thus effectively preventing leakage caused by rainwater ingress. After the photovoltaic cables 5 are connected, the top cover 32 is placed on the receiving groove 31 to form the wiring frame 3. The design of the cover 32 further prevents rainwater from entering the connection position of the photovoltaic cables. Then, when the cover 7 is placed on the box, the cover 7 moves down, and the locking block 73 moves downward along the vertical slot 21. When the rubber gasket 23 on the top of the bottom side plate 2 of the box abuts against the lower end face of the top plate 71 of the cover, the locking block 73 is flush with the positioning groove 22. Then, the cover 7 is rotated so that the locking block 73 is screwed into the corresponding positioning groove 22, which further forms the structure for rainwater to leak in. Finally, the connected cover 7 and the box are placed together into the fixed base 8. At this time, the limiting strip 82 of the fixed base 8 is inserted into the vertical slot 21 of the box 1 to prevent the cover from accidentally rotating and detaching from the box. The snap-fit ​​plate 9 is installed at the second connecting ear 83 of the fixed base 8 so that the first horizontal plate abuts against the upper end face of the cover 7. Then, the bolts are used to pass through the corresponding fourth connecting hole 921 and third connecting hole 831 to fix the junction box in the designated position.

[0049] The photovoltaic power generation module junction box provided in this embodiment has a downward-moving cover 7. After the cover 7 moves downward and rotates to allow the locking block 73 to enter the positioning groove 22, the limiting strip 82 in the limiting structure is inserted into the corresponding vertical slot 21. This prevents the cover 7 from rotating in case of accidental contact, thus preventing rainwater from seeping in if the cover 7 detaches from the box. Then, the first horizontal plate of the locking plate 9 abuts against the upper surface of the cover 7 and fixes the locking plate 9 to the fixed base, thereby further limiting the position of the cover 7 and further preventing accidental rotation. This forms a stable junction box that effectively prevents rainwater from entering, thus preventing leakage.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A junction box for a photovoltaic power generation module that is leak-proof, characterized in that, include: The box body has several wire frames (3) detachably connected inside the box body; the outer wall of the box body is provided with slots; The cover (7) is snapped into the box body, and the cover (7) is snapped into the slot; The limiting structure includes a fixed base (8) located below the box body and a snap-fit ​​plate (9) detachably connected to the fixed base (8).

2. The anti-leakage photovoltaic power generation module junction box according to claim 1, characterized in that, The top opening of the box includes a circular bottom plate (1) and a bottom side plate (2); The bottom side plate (2) is provided with equally spaced slots on its outer side. The slots include vertical slots (21) that run vertically through the top and bottom and positioning slots (22) that open on the left side. The vertical slots (21) and positioning slots (22) are connected.

3. The anti-leakage photovoltaic power generation module junction box according to claim 2, characterized in that, The lower end face of the bottom side plate (2) is higher than the lower end face of the bottom plate (1).

4. The anti-leakage photovoltaic power generation module junction box according to claim 3, characterized in that, The top of the bottom side plate (2) is provided with rubber gaskets (23).

5. The anti-leakage photovoltaic power generation module junction box according to claim 4, characterized in that, The base plate (1) has a plurality of first connection holes (11) for connecting the wiring frame (3).

6. The anti-leakage photovoltaic power generation module junction box according to claim 5, characterized in that, The bottom opening of the cover (7) includes a circular top plate (71) and a top side plate (72); the inner wall of the top side plate (72) is provided with equally spaced locking blocks (73), and the locking blocks (73) are adapted to the positioning groove (22).

7. The anti-leakage photovoltaic power generation module junction box according to claim 6, characterized in that, The wiring frame (3) includes an upward-facing receiving groove (31) and a top cover (32). A first connecting ear (33) is provided on the bottom side of the receiving groove (31). The first connecting ear (33) has a second connecting hole (331) which is adapted to the first connecting hole (11).

8. The anti-leakage photovoltaic power generation module junction box according to claim 7, characterized in that, The front and rear sides of the receiving groove (31) are fixedly connected to a wiring pipe (4), and the wiring pipe (4) also penetrates the bottom side plate (2) of the box body; The conduit (4) is used to pass through the photovoltaic cable (5), and the end of the conduit (4) is connected to the photovoltaic cable (5) through the locking tube (6).

9. The anti-leakage photovoltaic power generation module junction box according to claim 8, characterized in that, The fixed base (8) includes a bottom limiting ring (81) and a limiting strip (82) fixed to the upper end face of the bottom limiting ring (81), the limiting strip (82) being adapted to the vertical slot (21); The bottom limiting ring (81) is also connected to a second connecting ear (83), and the second connecting ear (83) has a third connecting hole (831).

10. The anti-leakage photovoltaic power generation module junction box according to claim 9, characterized in that, The snap-fit ​​plate (9) includes a first horizontal plate (91), a vertical plate (93) and a second horizontal plate (92). One end of the first horizontal plate (91) is fixed to the top of the vertical plate (93), and the bottom end of the vertical plate (93) is fixed to the second horizontal plate (92). The first horizontal plate (91) and the second horizontal plate (92) are located on both sides of the vertical plate (93). The first horizontal plate (91) abuts against the upper end face of the cover (7), and the second horizontal plate (92) has a fourth connecting hole (921) that matches the third connecting hole (831). By using bolts to pass through the corresponding fourth connecting hole (921) and the third connecting hole (831), the junction box can be fixedly installed in the designated position.

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