Protective device for direct-current combiner box

Abstract

The utility model relates to the technical field of photovoltaic power generation, and discloses a DC combiner box protection device, which comprises a box body, the inner side wall of the box body is fixedly provided with a winding column used for storage, the inner side wall of the box body is fixedly provided with a combiner box body, the top of the box body is provided with a top window used for ventilation, and the top window is provided with a bottom window used for ventilation. A blocking cover used for sealing is fixedly installed on the top of the top window, a holding structure used for pulling is arranged on the top of the blocking cover, and a heating rod used for temperature rising is fixedly installed in the box body. According to the DC combiner box protection device, the device can be more convenient and stable through the cooperative arrangement of the wire winding column and the combiner box body, and the excessive length of wires connected to the device can be well stored in the actual use process of the device by means of the cooperative arrangement of the wire winding column and the wires on the combiner box body; and more potential safety hazards of the device caused by mutual winding of wires with redundant lengths are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, in particular to a DC combiner box protection device. Background Art

[0002] The combiner box is a wiring device that ensures the combiner function of photovoltaic modules in the photovoltaic power generation system. This device can ensure that the photovoltaic system can be easily disconnected during maintenance and inspection, and reduce the scope of power outage when a photovoltaic system failure occurs.

[0003] Chinese patent announcement number CN218570185U discloses a photovoltaic power generation DC junction box protection device, including a mounting frame installed outside the junction box body, a protection plate fixed on both sides of the outside of the mounting frame by a telescopic rod, and an umbrella-shaped canopy located on the top of the junction box body, a heat dissipation wind tunnel is provided on the protection plate, a heat dissipation fan is provided on the inner wall of the protection plate corresponding to the heat dissipation wind tunnel, an adjustment screw rod is vertically arranged on the top of the mounting frame, the external thread of the adjustment screw rod is connected to a drive sleeve, and a connecting rod is movably hinged between the drive sleeve and the canopy. The protection device has the triple functions of anti-impact, rainproof and waterproof, and effective dustproof and heat dissipation, and can protect the junction box body in all directions, thereby reducing the damage of internal parts and allowing the photovoltaic power generation system to continue to operate normally.

[0004] However, the utility model has the following problems when actually used:

[0005] 1. The device is not equipped with a device to store excess wires. In actual use, the excess wires may become entangled with each other, affecting the safe operation of the device;

[0006] 2. The device is not equipped with a device to remove moisture from the inside of the device. During actual use, the practicability of the device may be affected due to excessive moisture in the external environment. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In order to overcome the above-mentioned defects of the prior art, the utility model provides a DC combiner box protection device, which solves the problems in the prior art:

[0009] 1. The device is not equipped with a device to store the wires of a certain length. In actual use, the wires of excess length may become entangled with each other, affecting the safe operation of the device;

[0010] 2. The device is not equipped with a device to remove moisture from the inside of the device. In actual use, the practicability of the device may be affected due to excessive moisture in the external environment.

[0011] (II) Technical solution

[0012] To achieve the above objectives, the utility model is implemented through the following technical solutions: a DC combiner box protection device, including a box body, the inner side wall of the box body is fixedly installed with a wire winding pole for storage, the inner side wall of the box body is fixedly installed with a combiner box body, the top of the box body is provided with a top window for ventilation, the top of the top window is fixedly installed with a baffle cover for sealing, the top of the baffle cover is provided with a gripping structure for pulling, and the inside of the box body is fixedly installed with a heating rod for heating.

[0013] Optionally, a hinge for rotation is fixedly installed on the side of the box body, and a box door for sealing is fixedly installed on the side of the hinge.

[0014] Optionally, a handle for pulling is fixedly installed on the side of the box door, and a switch for controlling is fixedly installed on the side of the box door.

[0015] Optionally, a card plate for connection is fixedly mounted on the side of the door, and a card slot for limiting is clamped on the side of the card plate.

[0016] Optionally, a bent plate for fixing is fixedly installed on the side of the winding column, and a screw rod is threadedly connected to the side of the bent plate.

[0017] Optionally, a wire for connection is provided on the top of the combiner box body, and a limiting plate for fixation is provided on the side of the combiner box body.

[0018] Optionally, a gauze for filtering is clamped inside the top window, and a magnet for adsorption is provided on the upper surface of the top window.

[0019] Optionally, a limiting ring for fixing is sleeved on the outer surface of the heating rod, and a horizontal plate for installation is fixedly connected to the bottom of the limiting ring.

[0020] (III) Beneficial effects

[0021] The utility model provides a DC combiner box protection device, which has the following beneficial effects:

[0022] 1. The DC combiner box protection device can make the device more convenient and stable through the coordinated setting of the wire winding pole and the combiner box body. With the help of the coordinated setting of the wire winding pole and the wire on the combiner box body, the excess length of the wire connected to the device can be better stored during actual use, avoiding the entanglement of the excess length of the wires with each other, causing more safety hazards in the device, and increasing the safety of the device.

[0023] 2. The DC combiner box protection device can make the device safer and more practical through the coordinated arrangement of the heating rod, the top window and the cover. With the help of the coordinated arrangement of the heating rod, the top window and the cover, when the device is used in a relatively humid environment, the heating rod can be turned on, and the cover can be opened. With the principle of hot air rising, the hot air generated by the heating rod can circulate inside the box, thereby reducing the moisture value in the box and increasing the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the box structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the box door structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the clamp ring of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the threaded ring of the utility model;

[0029] Figure 6 This is a schematic diagram of the ring structure of the utility model.

[0030] In the figure: 1. box body; 2. winding pole; 3. junction box body; 4. top window; 5. cover; 6. holding structure; 601. snap ring; 602. threaded ring; 603. sleeve ring; 7. hinge; 8. box door; 9. handle; 10. switch; 11. clamping plate; 12. clamping groove; 13. bent plate; 14. screw; 15. conductor; 16. limit plate; 17. mesh; 18. magnet; 19. limit ring; 20. horizontal plate; 21. heating rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figures 1 to 6 The utility model provides a technical solution: a DC combiner box protection device, in order to better protect the combiner box body 3, and to better store the excess length of the wire 15, and increase the practicality of the device, a box body 1 and a winding pole 2 are set;

[0033] The box body 1 comprises a box body 1, a wire winding column 2 for storing is fixedly installed on the inner side wall of the box body 1, a hinge 7 for rotating is fixedly installed on the side of the box body 1, and a box door 8 for sealing is fixedly installed on the side of the hinge 7. Through the coordinated arrangement of the hinge 7 and the box door 8, the box body 1 can be opened and closed more conveniently, thereby increasing the practicality of the device. A handle 9 for pulling is fixedly installed on the side of the box door 8, and a switch 10 for control is fixedly installed on the side of the box door 8. Through the arrangement of the handle 9, the staff can have a better force point when pulling open the box door 8, thereby increasing the practicality of the device. Through the arrangement of the switch 10, the box body 1 can be opened and closed more conveniently. The staff can better control the temperature of the heating rod 21 and increase the safety of the device. A card plate 11 for connection is fixedly installed on the side of the box door 8, and a card slot 12 for limiting is clamped on the side of the card plate 11. Through the coordinated setting of the card plate 11 and the card slot 12, the box door 8 can be closed. The card connection is more firmly and will not be easily blown open by the wind, thereby increasing the safety of the device. A bent plate 13 for fixing is fixedly installed on the side of the wire winding pole 2, and a screw 14 is threadedly connected to the side of the bent plate 13. Through the coordinated setting of the bent plate 13 and the screw 14, the wire winding pole 2 can be fixed more firmly, thereby increasing the stability of the device.

[0034] See also Figures 1 to 6 In order to make the device have the function of direct current converging and increase the practicality of the device, and at the same time to make the airflow in the box body 1 flow better and increase the stability of the device, a junction box body 3 and a top window 4 are provided;

[0035] The inner wall of the box body 1 is fixedly installed with a junction box body 3, and a top window 4 for ventilation is opened on the top of the box body 1. A wire 15 for connection is provided on the top of the junction box body 3, and a limit plate 16 for fixing is provided on the side of the junction box body 3. Through the setting of the wire 15, the device can be more convenient to connect with the solar panel, which increases the convenience of the device. Through the setting of the limit plate 16, the junction box body 3 can be fixed more firmly, which increases the stability of the device. A gauze 17 for filtering is clamped inside the top window 4, and a magnet 18 for adsorption is provided on the upper surface of the top window 4. Through the setting of the gauze 17, dust can be prevented from falling into the box body 1 while the airflow is circulated. Through the setting of the magnet 18, the cover 5 of the top window 4 can be adsorbed more firmly when ventilation is not required, which increases the practicality of the device.

[0036] See also Figures 1 to 6 In order to facilitate the top window 4 to be blocked and opened, increase the convenience of the device, and to enable the device to have the ability to remove moisture and increase the safety of the device, a cover 5, a gripping structure 6 and a heating rod 21 are provided;

[0037] A blocking cover 5 for sealing is fixedly installed on the top of the top window 4, and a holding structure 6 for pulling is provided on the top of the blocking cover 5. A heating rod 21 for heating is fixedly installed inside the box body 1, and a limiting ring 19 for clamping is sleeved on the outer surface of the heating rod 21, and a horizontal plate 20 for installation is fixedly connected to the bottom of the limiting ring 19. Through the coordinated setting of the limiting ring 19 and the horizontal plate 20, the heating rod 21 can be fixed more firmly, thereby increasing the stability of the device. Through the setting of the holding structure 6, the staff can have a better force point when opening the blocking cover 5, thereby increasing the practicability of the device.

[0038] Embodiment 1: The holding structure 6 includes a snap ring 601, which is snapped onto the bottom of the holding structure 6. The snap ring 601 is provided to facilitate disassembly of the holding structure 6, thereby increasing the convenience of the device.

[0039] Embodiment 2: The holding structure 6 includes a threaded ring 602, which is connected to the bottom of the holding structure 6 by threads. The threaded ring 602 can facilitate disassembly of the holding structure 6 and fix it more firmly, thereby increasing the stability of the device.

[0040] Embodiment 3: The holding structure 6 includes a collar 603, which is snap-connected to the bottom of the holding structure 6. The collar 603 can be arranged to make the holding structure 6 more firmly fixed and more convenient to install and remove, thereby increasing the practicability of the device.

[0041] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0042] In the utility model, the working steps of the device are as follows:

[0043] 1. First, fix the box 1 to the wall. After it is firmly fixed, fix the wire winding pole 2 to the inside of the box 1;

[0044] 2. Next, the combiner box body 3 is fixedly installed inside the box body 1. After the fixation is completed, the excess wire 15 is wound around the outer surface of the winding pole 2;

[0045] 3. Then, the heating rod 21 is fixedly installed on the bottom of the box body 1. After the installation is completed, the box door 8 is installed on the side of the box body 1;

[0046] 4. Finally, fix the cover 5 to the top of the top window 4. After the installation is completed, make sure that the cover 5 can be opened and closed normally.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A DC combiner box protection device, comprising a box body (1), characterized in that: A winding pole (2) for storing is fixedly mounted on the inner side wall of the box body (1), a junction box body (3) is fixedly mounted on the inner side wall of the box body (1), a top window (4) for ventilation is provided on the top of the box body (1), a cover (5) for sealing is fixedly mounted on the top of the top window (4), a gripping structure (6) for pulling is provided on the top of the cover (5), and a heating rod (21) for heating is fixedly mounted inside the box body (1).

2. A DC combiner box protection device according to claim 1, characterized in that: A hinge (7) for rotation is fixedly mounted on the side of the box body (1), and a box door (8) for sealing is fixedly mounted on the side of the hinge (7).

3. A DC combiner box protection device according to claim 2, characterized in that: A handle (9) for pulling is fixedly mounted on the side of the box door (8), and a switch (10) for controlling is fixedly mounted on the side of the box door (8).

4. A DC combiner box protection device according to claim 2, characterized in that: A card plate (11) for connection is fixedly mounted on the side of the box door (8), and a card slot (12) for limiting position is clamped on the side of the card plate (11).

5. A DC combiner box protection device according to claim 1, characterized in that: A bent plate (13) for fixing is fixedly mounted on the side of the winding pole (2), and a screw rod (14) is connected to the side of the bent plate (13) via a thread.

6. A DC combiner box protection device according to claim 1, characterized in that: A wire (15) for connection is provided on the top of the combiner box body (3), and a limit plate (16) for fixing is provided on the side of the combiner box body (3).

7. A DC combiner box protection device according to claim 1, characterized in that: A gauze net (17) for filtering is clamped inside the top window (4), and a magnet (18) for adsorption is provided on the upper surface of the top window (4).

8. A DC combiner box protection device according to claim 1, characterized in that: The outer surface of the heating rod (21) is sleeved with a limiting ring (19) for fixing, and the bottom of the limiting ring (19) is fixedly connected with a transverse plate (20) for installation.

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