Integrated photovoltaic cable junction box

Abstract

The utility model discloses an integrated photovoltaic cable collecting box belongs to photovoltaic equipment technical field, including the collecting box shell and two screw hole plates, two screw hole plates are respectively with two -way screw rod screw connection, two screw hole plates are respectively with the sliding connection of guide slide column, and the side surface of two screw hole plates is fixedly connected with a plurality of telescopic cylinders respectively, the utility model discloses, through setting two -way screw rod, rotates operating handle and can drive the synchronous adhesion of clamping ring and non -slip mat with multiple cables, and spring is compressed along with and forms stable clamping force, realizes the synchronous fixing of multiple cables, in addition, when the cable is pulled or appears thermal expansion and cold shrink, spring will through telescopic deformation absorption generated force, and telescopic rod and telescopic cylinder can limit the displacement direction of clamping ring, can provide the buffer for cable expansion, can also move with cable contraction synchronism, can also weaken the influence of pulling force, effectively avoid cable slack.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic equipment technology, specifically relating to an integrated photovoltaic cable combiner box. Background Technology

[0002] Integrated photovoltaic cable combiner boxes are core supporting devices in the power transmission link of photovoltaic power plants. They are mainly used to collect and combine the low-voltage DC power output from multiple photovoltaic modules, and integrate functions such as power collection, protection, and monitoring.

[0003] During use, existing integrated photovoltaic cable combiner boxes are susceptible to damage from wind, thermal expansion and contraction, and external forces, which can cause the integrated photovoltaic cables to wobble and loosen. This can lead to loose connections between the cables and their terminals, resulting in poor contact or even current interruption. Therefore, an integrated photovoltaic cable combiner box is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide an integrated photovoltaic cable combiner box to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated photovoltaic cable combiner box, comprising a combiner box shell and two screw hole plates, the two screw hole plates being threadedly connected to bidirectional threaded rods respectively, the two screw hole plates being slidably connected to guide slide columns respectively, a plurality of telescopic cylinders being fixedly connected to one side surface of the two screw hole plates respectively, telescopic rods being slidably connected inside the plurality of telescopic cylinders respectively, a clamping ring being fixedly connected to one end of the plurality of telescopic rods respectively, an anti-slip pad being fixedly connected to one side surface of the plurality of clamping rings respectively, a plurality of springs being fixedly connected to one side surface of the two screw hole plates respectively, the other end of the plurality of springs being fixedly connected to the other side surface of the plurality of clamping rings.

[0006] By setting up the above structure and incorporating a bidirectional threaded rod, rotating the operating handle can simultaneously engage the clamping ring and anti-slip pad to adhere to multiple cables. Simultaneously, the spring compresses and forms a stable clamping force, achieving synchronous fixation of multiple cables. Furthermore, when the cable is stretched or experiences thermal expansion and contraction, the spring absorbs the force through its expansion and contraction deformation. The telescopic rod and telescopic cylinder limit the displacement direction of the clamping ring, providing a buffer for cable expansion, moving synchronously with cable contraction, and weakening the effect of tensile force. This effectively prevents cable loosening and avoids poor contact or current interruption.

[0007] As a preferred embodiment, a sealing door is fixedly connected to one side surface of the junction box housing, and an opening and closing lock is fixedly connected inside the sealing door.

[0008] As a preferred embodiment, a rain guide plate is fixedly connected to the top of the junction box housing, and a circuit breaker is fixedly connected to the inside of the junction box housing.

[0009] As a preferred embodiment, a surge protector is fixedly connected inside the combiner box housing, and a power supply is fixedly connected inside the combiner box housing.

[0010] As a preferred embodiment, a communicator is fixedly connected inside the junction box housing, and a fuse is fixedly connected inside the junction box housing.

[0011] As a preferred embodiment, a busbar is fixedly connected inside the junction box housing, and several cable terminals are fixedly connected inside the junction box housing.

[0012] As a preferred embodiment, photovoltaic cables are respectively inserted and connected inside several of the cable terminals, and a waterproof cavity sealing plate is fixedly connected to the bottom of the combiner box shell.

[0013] As a preferred embodiment, several photovoltaic cables pass through the interior of several waterproof cavity sealing plates, and several sealing plugs are inserted and connected to the bottom of the waterproof cavity sealing plates, with each of the sealing plugs corresponding to a specific position of a number of cable terminals.

[0014] As a preferred embodiment, four limiting rings are fixedly connected to both sides of the waterproof cavity sealing plate, and two of the limiting rings are rotatably connected to a bidirectional threaded rod, which rotates inside the waterproof cavity sealing plate.

[0015] As a preferred embodiment, one end of the bidirectional threaded rod is fixedly connected to an operating handle, and the other two limiting rings are fixedly connected to guide slides.

[0016] By setting up a sealing plug, a waterproof cavity sealing plate, and guide slides, the sealing plug can seal the penetration points where no cables are connected. Together with the waterproof cavity sealing plate, it can prevent rainwater and dust from entering, creating a stable and dry environment for the components inside the box. In addition, the guide slides can provide precise limit and guidance for the sliding of the screw plate, ensuring that it moves along the accurate trajectory. Multiple cables can be clamped and fixed simultaneously without adjusting them one by one. This simplifies the operation, improves the installation efficiency, and ensures that the clamping force of each cable is uniform, further ensuring the stability of the cable fixation.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting a bidirectional threaded rod, allows the operating handle to rotate, which drives the clamping ring and anti-slip pad to simultaneously adhere to multiple cables. At the same time, the spring is compressed to form a stable clamping force, achieving synchronous fixation of multiple cables. In addition, when the cable is stretched or experiences thermal expansion and contraction, the spring absorbs the force through its expansion and contraction deformation. The telescopic rod and telescopic cylinder limit the displacement direction of the clamping ring, providing a buffer for cable expansion, moving synchronously with cable contraction, and weakening the effect of tensile force. This effectively prevents the cable from loosening and avoids poor contact or current interruption.

[0018] This invention, by setting a sealing plug, a waterproof cavity sealing plate, and a guide slide, allows the sealing plug to seal the penetration points where no cable is connected. The waterproof cavity sealing plate, together with the sealing plug, can prevent rainwater and dust from entering, creating a stable and dry environment for the components inside the box. In addition, the guide slide provides precise limiting and guidance for the sliding of the screw hole plate, ensuring that it moves along an accurate trajectory. Multiple cables can be clamped and fixed simultaneously without adjusting them one by one, which simplifies operation, improves installation efficiency, and ensures uniform clamping force for each cable, further guaranteeing the stability of cable fixation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a bottom view of the structure of the waterproof cavity sealing plate of this utility model; Figure 4 This is a schematic diagram of the internal structure of the waterproof cavity sealing plate of this utility model; Figure 5 This is a schematic diagram showing the internal cross-section of the waterproof cavity sealing plate of this utility model; Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Combiner box housing; 2. Sealed door; 3. Opening and closing lock; 4. Rain guide plate; 5. Circuit breaker; 6. Surge protector; 7. Power supply unit; 8. Communicator; 9. Fuse; 10. Combiner plate; 11. Cable terminal; 12. Photovoltaic cable; 13. Waterproof cavity sealing plate; 14. Sealing plug; 15. Limiting ring; 16. Bidirectional threaded rod; 17. Operating handle; 18. Guide slide; 19. Threaded plate; 20. Telescopic cylinder; 21. Telescopic rod; 22. Clamping ring; 23. Anti-slip pad; 24. Spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-6 This utility model provides an integrated photovoltaic cable combiner box, including a combiner box shell 1 and two screw hole plates 19. The two screw hole plates 19 are respectively threaded to bidirectional threaded rods 16 and slidably connected to guide slide columns 18. A plurality of telescopic cylinders 20 are fixedly connected to one side surface of the two screw hole plates 19. Telescopic rods 21 are slidably connected inside the plurality of telescopic cylinders 20. A clamping ring 22 is fixedly connected to one end of the plurality of telescopic rods 21. An anti-slip pad 23 is fixedly connected to one side surface of the plurality of clamping rings 22. A plurality of springs 24 are fixedly connected to one side surface of the two screw hole plates 19. One end is fixedly connected to the other side surface of several clamping rings 22. By setting a bidirectional threaded rod 16, rotating the operating handle 17 can drive the clamping rings 22 and anti-slip pads 23 to synchronously adhere to multiple cables. At the same time, the spring 24 is compressed and forms a stable clamping force, realizing the synchronous fixation of multiple cables. In addition, when the cable is stretched or undergoes thermal expansion and contraction, the spring 24 will absorb the force generated by the expansion and contraction deformation. The telescopic rod 21 and telescopic cylinder 20 can limit the displacement direction of the clamping rings 22, which can not only provide a buffer for cable expansion, but also move synchronously with cable contraction, and weaken the effect of the pulling force, effectively preventing the cable from loosening and preventing poor contact or current interruption.

[0024] A sealing door 2 is fixedly connected to one side surface of the junction box housing 1, and an opening and closing lock 3 is fixedly connected inside the sealing door 2.

[0025] A rain guide plate 4 is fixedly connected to the top of the junction box housing 1, and a circuit breaker 5 is fixedly connected inside the junction box housing 1.

[0026] A surge protector 6 is fixedly connected inside the combiner box housing 1, and a power supply 7 is fixedly connected inside the combiner box housing 1.

[0027] A communicator 8 is fixedly connected inside the junction box housing 1, and a fuse 9 is fixedly connected inside the junction box housing 1.

[0028] The junction box housing 1 has a junction plate 10 fixedly connected inside, and several cable terminals 11 fixedly connected inside.

[0029] Photovoltaic cables 12 are inserted into the interior of several cable terminals 11, and a waterproof cavity sealing plate 13 is fixedly connected to the bottom of the junction box shell 1.

[0030] Several photovoltaic cables 12 pass through the interior of several waterproof cavity sealing plates 13. Several sealing plugs 14 are inserted and connected to the bottom of the waterproof cavity sealing plates 13, and the positions of the several sealing plugs 14 correspond one-to-one with the positions of several cable terminals 11.

[0031] Four limiting rings 15 are fixedly connected to both sides of the waterproof cavity sealing plate 13. Two of the limiting rings 15 are rotatably connected to a bidirectional threaded rod 16 inside the waterproof cavity sealing plate 13. The bidirectional threaded rod 16 rotates inside the waterproof cavity sealing plate 13.

[0032] One end of the bidirectional threaded rod 16 is fixedly connected to an operating handle 17, and the interiors of the other two limiting rings 15 are fixedly connected to guide slides 18. By setting a sealing plug 14, a waterproof cavity sealing plate 13, and guide slides 18, the sealing plug 14 can seal the penetration of the cable that is not connected. Together with the waterproof cavity sealing plate 13, it can prevent rainwater and dust from entering, creating a stable and dry environment for the components inside the box. In addition, the guide slides 18 can provide precise limit and guidance for the sliding of the screw hole plate 19, ensuring that it moves along the accurate trajectory. Multiple cables can be clamped and fixed synchronously without adjusting them one by one. This simplifies the operation, improves the installation efficiency, and ensures that the clamping force of each cable is uniform, further ensuring the stability of the cable fixation.

[0033] Working principle and usage process of this utility model: When in use, first install the combiner box in the preset position, open the lock 3 on the sealing door 2, pull out the sealing plug 14 that needs to be connected to the photovoltaic cable 12, and insert the photovoltaic cable 12 through the hole of the waterproof cavity sealing plate 13 into the cable terminal 11 for connection; then turn the operating handle 17 to drive the bidirectional threaded rod 16 to rotate, so that the screw hole plate 19 slides along the guide slide column 18, so that the clamping ring 22 fits the cable. At this time, the anti-slip pad 23 is in close contact with the cable, and the spring 24 is in a compressed state to fix multiple cables at the same time. Then close the sealing door 2 and lock the lock 3. When the cable expands and contracts due to heat, the cable expands and pushes the clamping ring 22, the spring 24 is compressed accordingly, and the telescopic rod 21 slides inward along the telescopic cylinder 20, providing a buffer for expansion to avoid stress impact; when the cable contracts, the spring 24 releases potential energy to push the clamping ring 22 to move synchronously, and works with the anti-slip pad 23 to prevent the cable from slipping and maintain stable clamping; when the cable is pulled by wind or external force, the cable pulls the clamping ring 22, causing the spring 24 to stretch and the telescopic rod 21 to slide outward. The spring 24 absorbs the pulling force through deformation, ensuring the stability of the clamping structure, effectively preventing the cable connection from loosening, and preventing poor contact or current interruption; During operation, power supply 7 provides power, communication device 8 starts up and establishes a data link, and the DC power generated by the photovoltaic modules is transmitted to the combiner board 10 for centralized collection via cables and terminals; circuit breaker 5, surge protector 6, and fuse 9 respectively realize circuit on / off control, lightning protection, and overcurrent protection functions, while communication device 8 uploads equipment operation data in real time.

[0034] 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. An integrated photovoltaic cable combiner box, comprising a combiner box shell (1) and two screw hole plates (19), characterized in that: The two screw hole plates (19) are respectively threaded to the bidirectional threaded rod (16), and the two screw hole plates (19) are respectively slidably connected to the guide slide column (18). A number of telescopic cylinders (20) are fixedly connected to one side surface of the two screw hole plates (19). Telescopic rods (21) are slidably connected inside the number of telescopic cylinders (20). A clamping ring (22) is fixedly connected to one end of the number of telescopic rods (21). An anti-slip pad (23) is fixedly connected to one side surface of the number of clamping rings (22). A number of springs (24) are fixedly connected to one side surface of the two screw hole plates (19). The other end of the number of springs (24) is fixedly connected to the other side surface of the number of clamping rings (22).

2. The integrated photovoltaic cable combiner box according to claim 1, characterized in that: A sealing door (2) is fixedly connected to one side surface of the junction box shell (1), and an opening and closing lock (3) is fixedly connected inside the sealing door (2).

3. An integrated photovoltaic cable combiner box according to claim 2, characterized in that: A rain guide plate (4) is fixedly connected to the top of the junction box housing (1), and a circuit breaker (5) is fixedly connected inside the junction box housing (1).

4. An integrated photovoltaic cable combiner box according to claim 3, characterized in that: A surge protector (6) is fixedly connected inside the junction box housing (1), and a power supply unit (7) is fixedly connected inside the junction box housing (1).

5. An integrated photovoltaic cable combiner box according to claim 4, characterized in that: A communicator (8) is fixedly connected inside the junction box housing (1), and a fuse (9) is fixedly connected inside the junction box housing (1).

6. An integrated photovoltaic cable combiner box according to claim 5, characterized in that: The junction box housing (1) is fixedly connected to a junction plate (10), and a number of cable terminals (11) are fixedly connected to the inside of the junction box housing (1).

7. An integrated photovoltaic cable combiner box according to claim 6, characterized in that: Photovoltaic cables (12) are respectively inserted into the interior of several of the cable terminals (11), and a waterproof cavity sealing plate (13) is fixedly connected to the bottom of the junction box shell (1).

8. An integrated photovoltaic cable combiner box according to claim 7, characterized in that: Several photovoltaic cables (12) pass through the interior of several waterproof cavity sealing plates (13). Several sealing plugs (14) are inserted and connected to the bottom of the waterproof cavity sealing plates (13). The positions of the several sealing plugs (14) correspond one-to-one with the positions of several cable terminals (11).

9. An integrated photovoltaic cable combiner box according to claim 8, characterized in that: Four limiting rings (15) are fixedly connected to both sides of the waterproof cavity sealing plate (13). Two of the limiting rings (15) are rotatably connected to a bidirectional threaded rod (16), which rotates inside the waterproof cavity sealing plate (13).

10. An integrated photovoltaic cable combiner box according to claim 9, characterized in that: One end of the bidirectional threaded rod (16) is fixedly connected to an operating handle (17), and the other two limiting rings (15) are fixedly connected to guide slides (18).

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