Photovoltaic module wiring device with heat dissipation performance and electrical performance

Abstract

The invention discloses a photovoltaic module wiring device with heat dissipation performance and electrical performance, and relates to the technical field of wiring devices, the photovoltaic module wiring device comprises a wiring box body, a heat dissipation plate is fixed between the opposite inner walls of the wiring box body, and a controller is arranged on the outer surface of the wiring box body. According to the photovoltaic module wiring device with the heat dissipation performance and the electrical performance, in order to prevent a fire disaster caused by short circuit of a wire connected with the wiring device, when a smell sensor detects that a fire disaster happens to a cable, pressing of a pressing block on the wire is stopped firstly, and a first flange and a second flange are fixedly communicated; under the action of negative pressure, the wire is moved and fixed in the fireproof pipe, and the fireproof pipe is moved to the interior far away from the wiring terminal, so that the protection of the wiring box body is realized, and the problem that most photovoltaic module wiring devices in the prior art do not have the function of automatically preventing the external wire from catching fire and can not be normally used is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring devices, and particularly to a photovoltaic module wiring device with heat dissipation performance and electrical performance. Background Technique

[0002] Photovoltaic refers to the technology of directly converting light energy into electrical energy, which is mainly achieved through photovoltaic modules. The photovoltaic principle is based on the photoelectric effect, that is, when photons strike a semiconductor material, electrons will escape from their atoms, thereby generating an electric current. The photovoltaic module wiring device is an electrical connection device used to connect and manage photovoltaic modules, aiming to ensure the safe, reliable and efficient operation of the photovoltaic system. Since the photovoltaic system generates a certain amount of heat during operation, especially under high load and strong sunlight conditions, excessive temperature is likely to cause the wiring equipment to overheat, increasing the fire risk. The heat dissipation function helps to keep the equipment temperature within a safe range.

[0003] Currently, a photovoltaic panel is composed of multiple photovoltaic units, which can generate direct current under sunlight irradiation. A wiring device is equipped behind each photovoltaic module. The function of the wiring device with electrical performance is to lead out the current generated inside the photovoltaic module. The wire led out from the wiring device with electrical performance is connected to an inverter and a battery energy storage system. Since the photovoltaic panel needs to be exposed to sunlight for a long time, it needs to be installed outdoors, which in turn leads to the photovoltaic module wiring device being installed outdoors. Due to the complex outdoor environment and being eroded by wind and rain, the wires connected to the wiring device with electrical performance are prone to aging under the influence of wind, sun, and temperature difference changes. And since heat is generated when current passes through the wire, the heat dissipation device of the wiring device with electrical performance itself cannot effectively dissipate heat from the external wires connected to it. When encountering high-temperature weather, it is easy to cause the wires connected to the wiring device to short-circuit and catch fire. And since the external wires are connected to the wiring device at this time, the fire will spread along the wires into the interior of the wiring device. And most of the existing photovoltaic module wiring devices with electrical performance do not have the function of automatically separating from the wires connected to them, which is likely to cause the fire to spread into the interior of the wiring device with electrical performance, thereby triggering a larger fire and making the photovoltaic module wiring device unable to be used normally.

[0004] Therefore, we propose a photovoltaic module wiring device with heat dissipation performance and electrical performance to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a photovoltaic module wiring device with heat dissipation performance and electrical performance to solve the problem that most photovoltaic module wiring devices in the above background technology do not have the function of automatically preventing external wires from catching fire and are likely to make them unable to be used normally.

[0006] To achieve the above object, the present invention provides the following technical solution: A photovoltaic module wiring device with heat dissipation performance and electrical performance, including a wiring box body, a heat dissipation plate is fixed between the opposite inner walls of the wiring box body, a controller is arranged on the outer surface of the wiring box body, and a plurality of wiring components for connecting external wires are arranged inside the wiring box body. A protection component for fire prevention is arranged on the outer surface of one side of each of the plurality of wiring components, and an extension component for winding the wires is arranged on the outer surface of the other side of each of the plurality of wiring components. Each of the plurality of protection components includes a fire prevention pipe, a high-pressure groove for storing dry powder is opened at one end of each of the plurality of fire prevention pipes, a plastic ring is hermetically connected to the outer surface of each of the plurality of high-pressure grooves, a positioning plate is fixed on the surface of each of the plurality of wiring box bodies, a multi-stage electric telescopic rod is arranged on the outer surface of each of the plurality of positioning plates near both side edges, a moving plate is fixedly installed at one end of each of the plurality of multi-stage electric telescopic rods, two telescopic columns are fixed on the inner wall of each of the plurality of fire prevention pipes, a first spring is arranged on the outer surface of each of the plurality of telescopic columns, a clamping block is fixedly installed at one end of each of the plurality of telescopic columns, and a push plate is slidably connected inside each of the plurality of fire prevention pipes.

[0007] Preferably, every two adjacent ones of the plurality of moving plates are in a group, a first flange is fixed between the outer surfaces of each group of moving plates, a plurality of sealing cans are fixed on the outer surface of the wiring box body by screws, an air pump is fixed by screws near the center of the top end of each of the plurality of sealing cans, an air inlet pipe is fixedly connected to the air inlet end of each of the plurality of air pumps, an air outlet pipe is fixedly connected to the air outlet end of each of the plurality of air pumps, a pressure sensor is arranged on the outer surface of each of the plurality of sealing cans, a communicating pipe is fixedly communicated with the outer surface of each of the plurality of sealing cans near the other end, a second flange is fixedly installed at one end of each of the plurality of communicating pipes, and an electromagnetic valve is arranged on the outer surface of each of the plurality of communicating pipes.

[0008] Preferably, the inner walls of the plurality of positioning plates are respectively slidably connected with the outer surfaces of the plurality of fire prevention pipes, one end of each of the plurality of first springs is fixedly connected to the outer surface of each of the plurality of clamping blocks, the other end of each of the plurality of first springs is fixedly connected to the inner wall of each of the plurality of fire prevention pipes, the outer surfaces of the plurality of first flanges are respectively fixedly connected to one end of the plurality of fire prevention pipes, one end of each of the plurality of air inlet pipes respectively fixedly penetrates into the interior of the plurality of sealing cans, and one end of each of the plurality of air outlet pipes respectively fixedly penetrates into the interior of the plurality of sealing cans.

[0009] Preferably, each of the plurality of wiring components includes a wiring terminal, each of the plurality of wiring terminals is arranged on the outer surface of the wiring box body, one end of each of the plurality of fire prevention pipes respectively penetrates into the interior of each of the plurality of wiring terminals, a wiring groove is opened on the outer surface of each of the plurality of wiring terminals, and the interior of each of the plurality of fire prevention pipes is respectively communicated with the interior of each of the plurality of wiring grooves.

[0010] Preferably, pressing blocks are movably embedded inside the plurality of wiring grooves, distance sensors are arranged on the outer surfaces of the plurality of pressing blocks, connecting rods are fixed to the tops of the plurality of pressing blocks, the outer surfaces of the plurality of connecting rods respectively slide on the inner walls of the plurality of wiring terminals, telescopic tubes are fixedly installed on the opposite inner walls of the plurality of wiring terminals, and second springs are arranged on the outer surfaces of the plurality of telescopic tubes.

[0011] Preferably, every two adjacent ones of the plurality of second springs are taken as a group. One end of each group of second springs is fixedly connected to the inner wall of the plurality of wiring terminals respectively, and the other end of each group of second springs is fixedly connected to the outer surface of the plurality of connecting rods respectively. Every two adjacent ones of the plurality of telescopic tubes are taken as a group, and a pressing plate is fixedly installed between one ends of each group of telescopic tubes. Threaded rods are fixed to the outer surfaces of the plurality of pressing plates, one ends of the plurality of threaded rods respectively penetrate through the outside of the wiring terminals movably, and sliding rods are slidably connected inside the plurality of wiring terminals.

[0012] Preferably, one ends of the plurality of sliding rods respectively penetrate through the outside of the wiring terminals movably, mounting plates are fixedly connected to one ends of the plurality of sliding rods, the outer surfaces of the plurality of mounting plates are fixedly connected to one ends of the plurality of threaded rods respectively, driving gears are threadedly sleeved on the outer surfaces of the plurality of threaded rods, and the outer surfaces of the plurality of driving gears are respectively rotatably connected to the inside of the plurality of wiring terminals.

[0013] Preferably, pressure-resistant frames are fixedly installed on the outer surfaces of the plurality of wiring terminals, positive and negative motors are arranged on the inner walls of the plurality of pressure-resistant frames, driving rods are fixedly connected to the output ends of the positive and negative motors, driving gears are fixedly sleeved on the outer surfaces of the plurality of driving rods, one ends of the plurality of driving rods respectively penetrate through the inside of the plurality of wiring terminals movably, and the outer surfaces of the plurality of driving gears are respectively meshed with the outer surfaces of the plurality of driving gears.

[0014] Preferably, each of the plurality of extension components includes a carrier frame. The outer surfaces of one sides of the plurality of carrier frames are fixedly connected to the outer surface of the junction box body through screws. Two limiting rings are fixedly installed on the outer surfaces of the plurality of carrier frames. Limiting rods are fixedly installed on the opposite outer surfaces of the plurality of carrier frames. Rotating gears are movably sleeved on the outer surfaces of the plurality of limiting rods. Every two adjacent ones of the plurality of rotating gears are taken as a group, and a winding roller is fixed between the outer surfaces of each group of rotating gears.

[0015] Preferably, a limiting post is movably embedded between the relative inner walls of the plurality of limiting rings, a clamping block is fixedly embedded on the surface of each of the plurality of limiting posts, a coil spring is arranged on the opposite outer surfaces of the plurality of limiting rings, every two adjacent ones of the plurality of coil springs form a group, one ends of each group of coil springs are fixedly connected to the outer surfaces of the corresponding limiting posts respectively, both ends of the plurality of limiting posts movably penetrate through the outside of each group of coil springs respectively, and an odor sensor is arranged on the outer surface of the junction box body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In order to prevent the wire connected by the wiring device from catching fire due to short circuit, when the odor sensor detects a fire in the cable, first stop the pressing block from pressing the wire, fix and connect the first flange and the second flange, move and fix the wire inside the fireproof pipe under the action of negative pressure, and move the fireproof pipe away from the inside of the terminal, so as to protect the junction box body, and solve the problem that most of the wiring devices of photovoltaic modules in the prior art do not have the function of automatically preventing external wires from catching fire and are likely to be unable to be used normally.

[0017] 2. When using the wiring device of the photovoltaic module with electrical performance to connect the external wire, first wind a part of each wire around the outer surface of the corresponding winding roller respectively, insert one end of the wire into the corresponding wiring groove, and use the pressing block to press and position and fix the wire inserted into the wiring groove, which facilitates the connection and fixation of the wires in the wiring device.

[0018] 3. In order to facilitate the movement of the wire into the fireproof pipe, when the wire moves into the fireproof pipe, the two rotating gears are driven to rotate counterclockwise under the action of the pulling force. In order to prevent the wire wound on the surface of the winding roller from being pulled off the surface of the winding roller, through the action of the rectangular block arranged in the limiting ring, it can effectively prevent the rotating gear from rotating clockwise along with the pulling of the external wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front perspective view of a wiring device of a photovoltaic module with heat dissipation performance and electrical performance according to the present invention; Figure 2 is a partial perspective view of the junction box body of a wiring device of a photovoltaic module with heat dissipation performance and electrical performance according to the present invention; Figure 3 is a partial sectional perspective view of the wiring assembly of a wiring device of a photovoltaic module with heat dissipation performance and electrical performance according to the present invention; Figure 4 For the present invention Figure 3 is an enlarged view at A in Figure 5Exploded perspective sectional view of the terminal part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 6 Perspective view of the protective component part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 7 Sectional perspective view of the sealed tank part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 8 For the present invention Figure 7 Enlarged view at position B in; Figure 9 For the present invention Figure 7 Enlarged view at position C in; Figure 10 Perspective view of the extension component part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 11 Sectional perspective view of the rotating gear part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 12 Sectional perspective view of the limiting ring part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention; Figure 13 For the present invention Figure 12 Enlarged view at position D in; Figure 14 Perspective view of the clamping block part of a wiring device for a photovoltaic module with heat dissipation and electrical performance according to the present invention.

[0020] In the figure: 1. Junction box body; 2. Heat dissipation plate; 3. Controller; 4. Wiring assembly; 401. Wiring terminal; 402. Wiring groove; 403. Pressing block; 404. Distance sensor; 405. Connecting rod; 406. Telescopic tube; 407. Second spring; 408. Extrusion plate; 409. Slide bar; 410. Mounting plate; 411. Threaded rod; 412. Driving gear; 413. Compression-resistant frame; 414. Reversible motor; 415. Driving rod; 416. Driving gear; 5. Protection assembly; 501. Fireproof tube; 502. High-pressure groove; 503. Plastic ring; 504. Positioning plate; 505. Multistage electric telescopic rod; 506. Moving plate; 507. Telescopic column; 508. First spring; 509. Clamping block; 510. Pushing plate; 511. First flange; 512. Second flange; 513. Connecting pipe; 514. Solenoid valve; 515. Sealing tank; 516. Air pump; 517. Intake pipe; 518. Exhaust pipe; 519. Pressure sensor; 6. Extension assembly; 601. Bearing frame; 602. Limiting ring; 603. Limiting rod; 604. Rotating gear; 605. Winding roller; 606. Limiting column; 607. Clamping block; 608. Torsion spring; 7. Odor sensor. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-14 , the present invention provides a technical solution: a photovoltaic module wiring device with heat dissipation performance and electrical performance. Each of the multiple wiring assemblies 4 includes a wiring terminal 401. The multiple wiring terminals 401 are all arranged on the outer surface of the junction box body 1. One end of each of the multiple fireproof tubes 501 respectively penetrates into the inside of the multiple wiring terminals 401. Wiring grooves 402 are respectively formed on the outer surfaces of the multiple wiring terminals 401. The interiors of the multiple fireproof tubes 501 are respectively communicated with the interiors of the multiple wiring grooves 402. Pressing blocks 403 are respectively movably embedded in the interiors of the multiple wiring grooves 402. Distance sensors 404 are arranged on the outer surfaces of the multiple pressing blocks 403. Connecting rods 405 are fixed to the tops of the multiple pressing blocks 403. The outer surfaces of the multiple connecting rods 405 respectively slide on the inner walls of the multiple wiring terminals 401. Telescopic tubes 406 are fixedly installed on the opposite inner walls of the multiple wiring terminals 401. Second springs 407 are arranged on the outer surfaces of the multiple telescopic tubes 406.

[0023] In this embodiment, when using a photovoltaic module wiring device with electrical performance to connect external wires, first, each wire is respectively wound partially around the outer surface of its corresponding winding roller 605, and then one end of the wire is inserted into the interior of its corresponding wiring groove 402. The forward and reverse motor 414 is started through the controller 3 to drive the driving rod 415 to rotate, thereby driving the driving gear 416 to rotate, which in turn drives the driven gear 412 to rotate, and then drives the threaded rod 411 to move towards the pressing plate 408, thereby pressing the pressing plate 408, so that the two corresponding second springs 407 are stretched by the pulling force, causing the connecting rod 405 to move towards the pressing block 403, making the pressing block 403 press and position the wire inserted into the wiring groove 402. At the same time, the distance sensor 404 is started. Among them, the distance sensor 404 emits ultrasonic signals outward. These sound waves will be reflected back to the sensor when they encounter an object. The sensor measures the time difference between the emitted signal and the received signal, thereby calculating the distance between the object and the sensor. By continuously measuring the distance, it can be determined whether the object has moved and the amplitude of its movement. When the distance sensor 404 detects that the pressing block 403 no longer moves significantly, it indicates that the pressing block 403 has completed the pressing and positioning of the wire, and the forward and reverse motor 414 can be turned off. Through the action of the wiring assembly 4, the connection and fixation of the wires in the wiring device are facilitated.

[0024] As Figures 1-9As shown in the figure, a photovoltaic module wiring device with heat dissipation performance and electrical performance includes a junction box body 1. A heat dissipation plate 2 is fixed between the opposite inner walls of the junction box body 1. A controller 3 is arranged on the outer surface of the junction box body 1. A plurality of wiring components 4 for connecting external wires are arranged inside the junction box body 1. A protective component 5 for fire prevention is arranged on the outer surface of one side of each of the plurality of wiring components 4. An extension component 6 for winding the wires is arranged on the outer surface of the other side of each of the plurality of wiring components 4. Each of the plurality of protective components 5 includes a fire prevention tube 501. A high-pressure groove 502 for storing dry powder is formed at one end of each of the plurality of fire prevention tubes 501. A plastic ring 503 is hermetically connected to the outer surface of each of the plurality of high-pressure grooves 502. A positioning plate 504 is fixed on the surface of each of the plurality of junction box bodies 1. A multi-stage electric telescopic rod 505 is arranged on the outer surface of each of the plurality of positioning plates 504 near both side edges. A moving plate 506 is fixedly installed at one end of each of the plurality of multi-stage electric telescopic rods 505. Two telescopic columns 507 are fixed on the inner wall of each of the plurality of fire prevention tubes 501. A first spring 508 is arranged on the outer surface of each of the plurality of telescopic columns 507. A clamping block 509 is fixedly installed at one end of each of the plurality of telescopic columns 507. A push plate 510 is slidably connected inside each of the plurality of fire prevention tubes 501. Every two adjacent moving plates 506 of each of the plurality of moving plates 506 are taken as a group, and a first flange 511 is fixed between the outer surfaces of each group of moving plates 506. A plurality of seal cans 515 are fixed on the outer surface of the junction box body 1 by screws. An air pump 516 is fixed on the top of each of the plurality of seal cans 515 near the center by screws. An air inlet pipe 517 is fixedly communicated with the air inlet end of each of the plurality of air pumps 516. An air outlet pipe 518 is fixedly connected to the air outlet end of each of the plurality of air pumps 516. A pressure sensor 519 is arranged on the outer surface of each of the plurality of seal cans 515. A communicating pipe 513 is fixedly communicated with the outer surface of each of the plurality of seal cans 515 near the other end. A second flange 512 is fixedly installed at one end of each of the plurality of communicating pipes 513. An electromagnetic valve 514 is arranged on the outer surface of each of the plurality of communicating pipes 513. The inner walls of the plurality of positioning plates 504 are respectively slidably connected with the outer surfaces of the plurality of fire prevention tubes 501. One end of each of the plurality of first springs 508 is fixedly connected with the outer surface of each of the plurality of clamping blocks 509, and the other end of each of the plurality of first springs 508 is fixedly connected with the inner wall of each of the plurality of fire prevention tubes 501. The outer surfaces of the plurality of first flanges 511 are respectively fixedly connected with one end of the plurality of fire prevention tubes 501. One end of each of the plurality of air inlet pipes 517 respectively penetrates through the inside of each of the plurality of seal cans 515. One end of each of the plurality of air outlet pipes 518 respectively penetrates through the inside of each of the plurality of seal cans 515. One end of each of the plurality of sliding rods 409 respectively penetrates through the outside of the terminal 401 movably, and one end of each of the plurality of sliding rods 409 is fixedly connected with a mounting plate 410. The outer surfaces of the plurality of mounting plates 410 are respectively fixedly connected with one end of the plurality of threaded rods 411. A driving gear 412 is threadedly sleeved on the outer surface of each of the plurality of threaded rods 411. The outer surfaces of the plurality of driving gears 412 are respectively rotatably connected with the inside of the plurality of terminals 401.Anti-pressure frames 413 are fixedly installed on the outer surfaces of multiple wiring terminals 401. Reversible motors 414 are arranged on the inner walls of the multiple anti-pressure frames 413. Output ends of the multiple reversible motors 414 are fixedly connected with drive rods 415. Driving gears 416 are fixedly sleeved on the outer surfaces of the multiple drive rods 415. One ends of the multiple drive rods 415 respectively penetrate into the multiple wiring terminals 401 movably. Outer surfaces of the multiple driving gears 416 are respectively meshed and connected with outer surfaces of the multiple drive gears 412.,

[0025] In this embodiment, in order to prevent a fire caused by a short circuit in the wires connected by the wiring device, first, the odor sensor 7 is turned on. Among them, the odor sensor 7 adopts metal oxide sensor technology. When the sensor interacts with the gas in the air, its conductivity and impedance parameters will change. The sensor will convert these signals into available electrical signals inside, and then judge whether there is a fire risk. When the odor sensor 7 detects that the wire connected to it catches fire, since it is impossible to detect which specific wire fails, start the multiple reversible motors 414 to drive the multiple driving gears 416 to rotate reversely, and then drive the multiple drive gears 412 to rotate reversely. Among them, as Figure 5 shown, the cross-sections of the parts of the drive gears 412 connected to the wiring terminals 401 are all T-shaped. The purpose is to limit the drive gears 412 while facilitating their rotation. The drive gears 412 drive the threaded rods 411 to move towards the mounting plate 410, thereby driving the pressing plate 408 to move, stopping pressing on the connecting rod 405, and then enabling the connecting rod 405 to move towards the mounting plate 410 under the elastic action of the two second springs 407, and then driving the pressing block 403 to move out of the inside of the wiring groove 402, and then stopping pressing on the wire. At the same time, start the air pump 516 to drive the intake pipe 517 to extract gas into the sealing tank 515, so that the inside of the sealing tank 515 is in a negative pressure state, and detect the pressure in the sealing tank 515 through the pressure sensor 519. When the pressure sensor 519 detects that the pressure value in the sealing tank 515 reaches the required value, among them, the pressure sensor 519 is based on converting physical pressure into a measurable electrical signal. The pressure sensor 519 includes a sensing element that is sensitive to the pressure change in the sealing tank 515. Using the characteristic that the material deforms under pressure, under pressure, the sensing element will undergo a slight deformation, thereby changing its resistance value. Start the two multi-stage electric telescopic rods 505 through the controller 3 to make them extend, drive the two moving plates 506 to move forward, and then drive the first flange 511 to move towards the second flange 512 until the outer surfaces of the first flange 511 and the second flange 512 are tightly attached to each other. Among them, as Figure 9As shown, sealing rings are provided inside the first flange 511 and the second flange 512, and the purpose is to enable the sealed connection between the fireproof pipe 501 and the connecting pipe 513. At this time, the solenoid valve 514 can be opened through the controller 3, so that the wire arranged in the corresponding wiring groove 402 and the push plate 510 arranged in the fireproof pipe 501 move together in the direction of the connecting pipe 513 under the action of negative pressure. Among them, the inner diameters at both ends of the fireproof pipe 501 are respectively smaller than the outer diameter of the push plate 510, and the purpose is to limit the push plate 510. When the push plate 510 moves close to the outer surfaces of the two clamping blocks 509, it will exert an extrusion effect on the two clamping blocks 509, as Figure 8 shown. The cross-sections of the two clamping blocks 509 are both arc-shaped, and the purpose is to facilitate the movement of the push plate 510. Under the extrusion of the push plate 510, the clamping blocks 509 move respectively to Figure 8After the wire enters the circular groove shown, the two first springs 508 will be shortened respectively. When the outer surfaces of the two clamping blocks 509 are separated from the outer surface of the push plate 510, the two clamping blocks 509 will move towards each other under the elastic force of the two first springs 508 respectively, so as to clamp and fix the wire following the push plate 510, thus realizing the positioning of the wire. Among them, since the pressure in the wiring groove 402 is much greater than the pressure in the sealed tank 515, and the mass of the wire is lower than the mass of the push plate 510, so during the movement of the push plate 510 and one end of the wire under the pressure difference, the wire will follow behind the push plate 510. Then, the air pump 516 and the solenoid valve 514 can be closed, and at the same time, the two multi-stage electric telescopic rods 505 are started to shorten, so as to drive the two moving plates 506 to move towards the corresponding terminal 401 respectively, and then the separation between the first flange 511 and the second flange 512 is caused, and then the fireproof tube 501 drives the wire to move outside the terminal 401 to a position far from the terminal 401 until the outer surfaces of the two moving plates 506 are in contact with the outer surface of the terminal 401. When the burning part in the wire moves to the position in contact with the outer surface of the fireproof tube 501, the plastic ring 503 arranged at the end face of the fireproof tube 501 will be burned first. Among them, the plastic ring 503 plays a role in sealing the inside of the high-pressure groove 502. According to the principle that plastic melts when encountering fire, when the plastic ring 503 is melted, the high-pressure dry powder arranged in the fireproof tube 501 will be released and sprayed outwards to extinguish the fire source on the wire. In addition, even if the dry powder does not extinguish the fire, since the wire has been moved out of the inside of the junction box body 1, when the fire source extends into the inside of the fireproof tube 501, since both the fireproof tube 501 and the push plate 510 are made of metal copper, it will not cause damage to other electrical components in the junction box body 1. Through the action of the wiring assembly 4, it effectively prevents the situation that the photovoltaic module wiring device with electrical performance is damaged due to the influence of wire short circuit, and solves the problem that most photovoltaic module wiring devices in the prior art do not have the function of automatically preventing external wires from catching fire and are prone to abnormal use.

[0026] As Figures 1-2 and Figures 6-14As shown, multiple extension components 6 each include a carrier 601. One outer surface of multiple carriers 601 is fixedly connected to the outer surface of the junction box body 1 by screws. Two limit rings 602 are fixedly installed on the outer surfaces of multiple carriers 601. Limit rods 603 are fixedly installed on the opposite outer surfaces of multiple carriers 601. Rotating gears 604 are movably sleeved on the outer surfaces of multiple limit rods 603. Every two adjacent ones of multiple rotating gears 604 form a group. A winding roller 605 is fixed between the outer surfaces of each group of rotating gears 604. Limit posts 606 are movably embedded between the opposite inner walls of multiple limit rings 602. Blocks 607 are fixedly embedded on the surfaces of multiple limit posts 606. Torsion springs 608 are arranged on the opposite outer surfaces of multiple limit rings 602. Every two adjacent ones of multiple torsion springs 608 form a group. One ends of each group of torsion springs 608 are fixedly connected to the outer surfaces of multiple limit posts 606 respectively. Two ends of multiple limit posts 606 movably penetrate to the outside of each group of torsion springs 608 respectively. An odor sensor 7 is arranged on the outer surface of the junction box body 1.

[0027] In this embodiment, in order to facilitate the movement of the wire into the fireproof pipe 501, when the wire moves into the fireproof pipe 501, it will pull the wire wound on the surface of the winding roller 605, causing it to rotate counterclockwise under the action of the pulling force, thereby driving the two rotating gears 604 to rotate counterclockwise, and then causing the two blocks 607 to rotate into the limit ring 602 under the action of the teeth on the surface of the rotating gear 604. The two blocks 607 are reset under the elastic force of the torsion spring 608, and so on, until the wire moves between the outer surfaces of the two clamping blocks 509. In addition, since the external wire has a certain weight during the connection with the terminal 401, in order to prevent the wire wound on the surface of the winding roller 605 from being pulled off the surface of the winding roller 605, through the Figure 13 function of the rectangular stop block arranged in the limit ring 602 as shown, the rotating gear 604 can be effectively prevented from rotating clockwise as the external wire is pulled.

[0028] As Figure 2 and Figures 6-10As shown, multiple moving plates 506 are grouped in pairs of adjacent ones. A first flange 511 is fixed between the outer surfaces of each pair of moving plates 506. A plurality of sealing cans 515 are fixed to the outer surface of the junction box body 1 by screws. At the top of each of the plurality of sealing cans 515 near the center, an air pump 516 is fixed by screws. The intake ends of the plurality of air pumps 516 are fixedly connected and communicated with intake pipes 517, and the outlet ends of the plurality of air pumps 516 are fixedly connected with outlet pipes 518. Pressure sensors 519 are arranged on the outer surfaces of the plurality of sealing cans 515. At the other end of the outer surfaces of the plurality of sealing cans 515, communicating pipes 513 are fixedly communicated. At one end of each of the plurality of communicating pipes 513, a second flange 512 is fixedly installed. Solenoid valves 514 are arranged on the outer surfaces of the plurality of communicating pipes 513. Each of the plurality of wiring components 4 includes a terminal 401, and the plurality of terminals 401 are arranged on the outer surface of the junction box body 1. One ends of the plurality of fireproof pipes 501 respectively penetrate into the interiors of the plurality of terminals 401 movably. Wiring grooves 402 are formed on the outer surfaces of the plurality of terminals 401. The interiors of the plurality of fireproof pipes 501 are respectively communicated with the interiors of the plurality of wiring grooves 402. Pressing blocks 403 are movably embedded in the interiors of the plurality of wiring grooves 402. Distance sensors 404 are arranged on the outer surfaces of the plurality of pressing blocks 403. Connecting rods 405 are fixed to the tops of the plurality of pressing blocks 403. The outer surfaces of the plurality of connecting rods 405 slide on the inner walls of the plurality of terminals 401 respectively. Telescopic tubes 406 are fixedly installed on the opposite inner walls of the plurality of terminals 401. Second springs 407 are arranged on the outer surfaces of the plurality of telescopic tubes 406.

[0029] In this embodiment, after the staff detects which specific wire catches fire and extinguishes it, the controller 3 is used to start multiple other air pumps 516 except the one corresponding to the wire on fire, driving the multiple air inlet pipes 517 to convey gas into the interiors of the multiple sealed tanks 515 respectively, so that the interiors of the sealed tanks 515 are in a high-pressure state. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, multiple multi-stage electric telescopic rods 505 except the one corresponding to the wire on fire are started again to make them extend, driving the multiple first flanges 511 to move to tightly fit against the outer surfaces of the multiple second flanges 512 respectively, thereby driving the fireproof pipe 501 to reset. At this time, the multiple solenoid valves 514 can be opened again, and under the action of the pressure difference, the multiple push plates 510 are driven to move into the wiring groove 402 respectively, further pushing the wires to move into the wiring groove 402. Since the pressure difference between the inside of the sealed tank 515 and the inside of the wiring groove 402 is small at this time, the moving amplitudes of the push plates 510 and the wires are small, and under the limiting action of the winding roller 605, the wires will not completely move out of the inside of the wiring groove 402. When the wires move into the inside of the wiring groove 402, multiple forward and reverse motors 414 except the one corresponding to the wire on fire can be started to drive the pressing blocks 403 to move into the wiring groove 402 to press the wires, thus realizing the reset of the wires that have not caught fire.

[0030] Usage method and working principle of this device: When using a photovoltaic module wiring device with electrical properties to connect external wires, first wind a part of each wire around the outer surface of its corresponding winding roller 605 respectively, and then insert one end of the wire into the interior of its corresponding wiring slot 402. Start the forward and reverse motor 414 through the controller 3, drive the drive rod 415 to rotate, and then drive the driving gear 416 to rotate, thereby driving the driven gear 412 to rotate, and then driving the threaded rod 411 to move towards the pressing plate 408, so as to press the pressing plate 408, so that the two corresponding second springs 407 are stretched by the pulling force, so that the connecting rod 405 moves towards the pressing block 403, and the pressing block 403 presses and positions the wire inserted into the wiring slot 402. At the same time, start the distance sensor 404. When it is detected that the pressing block 403 no longer moves significantly, it indicates that the pressing block 403 has completed the pressing and positioning of the wire, and the forward and reverse motor 414 can be turned off. In order to prevent the wires connected by the wiring device from catching fire due to short circuit, first turn on the odor sensor 7. When the odor sensor 7 detects that the wire connected to it catches fire, since it is impossible to detect which specific wire has a fault, start multiple forward and reverse motors 414 to drive multiple driving gears 416 to rotate in the reverse direction, and then drive multiple driven gears 412 to rotate in the reverse direction. The driven gear 412 drives the threaded rod 411 to move towards the mounting plate 410, thereby driving the pressing plate 408 to move, stopping the extrusion of the connecting rod 405, and then making the connecting rod 405 move towards the mounting plate 410 under the elastic action of the two second springs 407, and then driving the pressing block 403 to move out of the interior of the wiring slot 402, and then stopping the pressing of the wire. At the same time, start the air pump 516 to drive the intake pipe 517 to extract gas into the interior of the sealed tank 515, so that the interior of the sealed tank 515 is in a negative pressure state, and the pressure in the sealed tank 515 is detected by the pressure sensor 519. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, the controller 3 can start two multi-stage electric telescopic rods 505 to make them extend, drive the two moving plates 506 to move forward, and then drive the first flange 511 to move towards the second flange 512 until the outer surfaces of the first flange 511 and the second flange 512 are tightly attached to each other, as Figure 9As shown, sealing rings are provided inside the first flange 511 and the second flange 512. The purpose is to make the fireproof pipe 501 and the connecting pipe 513 sealed and connected. At this time, the solenoid valve 514 can be opened through the controller 3, so that the wire arranged in the corresponding wiring slot 402 and the push plate 510 arranged in the fireproof pipe 501 move together in the direction of the connecting pipe 513 under the action of negative pressure. When the push plate 510 moves to be close to the outer surfaces of the two clamping blocks 509, it will exert a squeezing effect on the two clamping blocks 509. Then, the air pump 516 and the solenoid valve 514 can be closed, and at the same time, the two multi-stage electric telescopic rods 505 are started to shorten, thereby driving the two moving plates 506 to move towards the corresponding terminal 401 respectively, so that the first flange 511 and the second flange 512 are separated, and then the fireproof pipe 501 drives the wire to move outside the terminal 401 to a position away from the terminal 401 until the outer surfaces of the two moving plates 506 are in contact with the outer surface of the terminal 401. When the burning part in the wire moves to the position in contact with the outer surface of the fireproof pipe 501, it will first burn the plastic ring 503 arranged at the end face of the fireproof pipe 501. According to the principle that plastic melts when encountering fire, when the plastic ring 503 is melted, the high-pressure dry powder arranged in the fireproof pipe 501 will be released and sprayed outwards to extinguish the fire source on the wire. In order to facilitate the movement of the wire into the fireproof pipe 501, when the wire moves into the fireproof pipe 501, it will exert a pulling effect on the wire wound on the surface of the winding roller 605, causing it to rotate counterclockwise under the action of the pulling force, and then driving the two rotating gears 604 to rotate counterclockwise, and then causing the two clamping blocks 607 to rotate into the internal part of the limit ring 602 under the action of the teeth on the surface of the rotating gear 604. The two clamping blocks 607 are reset under the elastic force of the coil spring 608, and so on until the wire moves between the outer surfaces of the two clamping blocks 509. In addition, because the external wire has a certain weight during the connection with the terminal 401, in order to prevent the wire wound on the surface of the winding roller 605 from being pulled and separated from the surface of the winding roller 605, through as Figure 13The function of the rectangular stopper set in the limit ring 602 is to prevent the rotating gear 604 from rotating clockwise along with the pulling of the external wire. When the staff detects which wire is on fire and extinguishes it, then start the other multiple air pumps 516 except the one corresponding to the wire on fire through the controller 3, and drive the multiple air inlet pipes 517 to respectively convey gas into the interiors of the multiple sealed tanks 515, so that the interiors of the sealed tanks 515 are in a high-pressure state. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, start the multiple multi-stage electric telescopic rods 505 except the one corresponding to the wire on fire again, and make them extend, driving the multiple first flanges 511 to respectively move to tightly fit against the outer surfaces of the multiple second flanges 512, thereby driving the fireproof pipe 501 to reset. At this time, the multiple solenoid valves 514 can be opened again, and under the action of the pressure difference, drive the multiple push plates 510 to respectively move into the wiring groove 402, thereby pushing the wire into the wiring groove 402. Since the pressure difference between the interior of the sealed tank 515 and the interior of the wiring groove 402 is small at this time, the moving amplitude of the push plate 510 and the wire is small, and under the limiting action of the take-up roller 605, the wire will not be completely removed from the interior of the wiring groove 402. When the wire moves into the interior of the wiring groove 402, start the multiple forward and reverse motors 414 except the one corresponding to the wire on fire, drive the pressing block 403 to move into the wiring groove 402, and press the wire to realize the reset of the wire that is not on fire. Among them, the controller 3 is electrically connected to the junction box body 1, the controller 3, the distance sensor 404, the forward and reverse motors 414, the multi-stage electric telescopic rods 505, the solenoid valves 514, the air pumps 516, the pressure sensor 519, and the odor sensor 7.

[0031] The wiring diagrams of the junction box body 1, the controller 3, the distance sensor 404, the forward and reverse motors 414, the multi-stage electric telescopic rods 505, the solenoid valves 514, the air pumps 516, the pressure sensor 519, and the odor sensor 7 in the present invention belong to the common knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the junction box body 1, the controller 3, the distance sensor 404, the forward and reverse motors 414, the multi-stage electric telescopic rods 505, the solenoid valves 514, the air pumps 516, the pressure sensor 519, and the odor sensor 7 will not be explained in detail.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A photovoltaic module wiring device with heat dissipation performance and electrical performance, comprising a wiring box body (1). A heat dissipation plate (2) is fixed between the opposite inner walls of the wiring box body (1). A controller (3) is arranged on the outer surface of the wiring box body (1). A plurality of wiring components (4) for connecting external wires are arranged inside the wiring box body (1). A protection component (5) for fire prevention is arranged on the outer surface of one side of each of the plurality of wiring components (4). An extension component (6) for winding wires is arranged on the outer surface of the other side of each of the plurality of wiring components (4). It is characterized in that: Each of the plurality of protection components (5) includes a fireproof pipe (501). A high-pressure groove (502) for storing dry powder is formed at one end of each of the plurality of fireproof pipes (501). A plastic ring (503) is hermetically connected to the outer surface of each of the plurality of high-pressure grooves (502). A positioning plate (504) is fixed on the surface of each of the plurality of wiring box bodies (1). A multi-stage electric telescopic rod (505) is arranged on the outer surface of each of the plurality of positioning plates (504) near both side edges. A moving plate (506) is fixedly installed at one end of each of the plurality of multi-stage electric telescopic rods (505). Two telescopic columns (507) are fixed to the inner wall of each of the plurality of fireproof pipes (501). A first spring (508) is arranged on the outer surface of each of the plurality of telescopic columns (507). A clamping block (509) is fixedly installed at one end of each of the plurality of telescopic columns (507). A push plate (510) is slidably connected to the inside of each of the plurality of fireproof pipes (501).

2. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 1, wherein: Each adjacent two of the plurality of moving plates (506) form a group. A first flange (511) is fixed between the outer surfaces of each group of moving plates (506). A plurality of sealing cans (515) are fixed to the outer surface of the wiring box body (1) by screws. An air pump (516) is fixed to the top of each of the plurality of sealing cans (515) near the center by screws. An air inlet pipe (517) is fixedly connected to the air inlet end of each of the plurality of air pumps (516). An air outlet pipe (518) is fixedly connected to the air outlet end of each of the plurality of air pumps (516). A pressure sensor (519) is arranged on the outer surface of each of the plurality of sealing cans (515). A communicating pipe (513) is fixedly connected to the outer surface of each of the plurality of sealing cans (515) near the other end. A second flange (512) is fixedly installed at one end of each of the plurality of communicating pipes (513). An electromagnetic valve (514) is arranged on the outer surface of each of the plurality of communicating pipes (513).

3. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 2, wherein: The inner walls of the plurality of positioning plates (504) slide on the outer surfaces of the plurality of fire pipes (501) respectively. One ends of the plurality of first springs (508) are fixedly connected to the outer surfaces of the plurality of clamping blocks (509) respectively. The other ends of the plurality of first springs (508) are fixedly connected to the inner walls of the plurality of fire pipes (501) respectively. The outer surfaces of the plurality of first flanges (511) are fixedly connected to one ends of the plurality of fire pipes (501) respectively. One ends of the plurality of air inlet pipes (517) penetrate through the interiors of the plurality of sealed tanks (515) respectively. One ends of the plurality of air outlet pipes (518) penetrate through the interiors of the plurality of sealed tanks (515) respectively.

4. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 3, characterized in that: Each of the plurality of wiring assemblies (4) includes a wiring terminal (401). The plurality of wiring terminals (401) are all arranged on the outer surface of the wiring box body (1). One ends of the plurality of fire pipes (501) penetrate through the interiors of the plurality of wiring terminals (401) respectively. Wiring grooves (402) are formed on the outer surfaces of the plurality of wiring terminals (401). The interiors of the plurality of fire pipes (501) communicate with the interiors of the plurality of wiring grooves (402) respectively.

5. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 4, characterized in that: Pressing blocks (403) are movably embedded in the interiors of the plurality of wiring grooves (402). Distance sensors (404) are arranged on the outer surfaces of the plurality of pressing blocks (403). Connecting rods (405) are fixed to the tops of the plurality of pressing blocks (403). The outer surfaces of the plurality of connecting rods (405) slide on the inner walls of the plurality of wiring terminals (401) respectively. Telescopic tubes (406) are fixedly installed on the opposite inner walls of the plurality of wiring terminals (401). Second springs (407) are arranged on the outer surfaces of the plurality of telescopic tubes (406).

6. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 5, characterized in that: Every two adjacent ones of the plurality of second springs (407) form a group. One end of each group of the second springs (407) is fixedly connected to the inner wall of the corresponding wiring terminal (401). The other end of each group of the second springs (407) is fixedly connected to the outer surface of the corresponding connecting rod (405). Every two adjacent ones of the plurality of telescopic tubes (406) form a group. A pressing plate (408) is fixedly installed between one ends of each group of the telescopic tubes (406). Threaded rods (411) are fixed to the outer surfaces of the plurality of pressing plates (408). One ends of the plurality of threaded rods (411) penetrate through the exterior of the wiring terminal (401) respectively. Slide rods (409) are slidably connected to the interiors of the plurality of wiring terminals (401).

7. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 6, characterized in that: One ends of the plurality of slide rods (409) penetrate through the exterior of the wiring terminal (401) respectively. One ends of the plurality of slide rods (409) are fixedly connected to mounting plates (410). The outer surfaces of the plurality of mounting plates (410) are fixedly connected to one ends of the plurality of threaded rods (411) respectively. Driving gears (412) are threadedly sleeved on the outer surfaces of the plurality of threaded rods (411). The outer surfaces of the plurality of driving gears (412) are rotatably connected to the interiors of the plurality of wiring terminals (401).

8. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 7, wherein: The outer surfaces of multiple said terminal blocks (401) are all fixedly installed with compression frames (413). The inner walls of multiple said compression frames (413) are all provided with forward and reverse motors (414). The output ends of multiple said forward and reverse motors (414) are all fixedly connected with drive rods (415). The outer surfaces of multiple said drive rods (415) are all fixedly sleeved with driving gears (416). One ends of multiple said drive rods (415) respectively penetrate into the interiors of multiple terminal blocks (401) movably. The outer surfaces of multiple said driving gears (416) are respectively meshed and connected with the outer surfaces of multiple driven gears (412).

9. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 8, wherein: Multiple said extension components (6) all include carrier frames (601). The outer surfaces of one sides of multiple said carrier frames (601) are all fixedly connected with the outer surface of the junction box body (1) by screws. The outer surfaces of multiple said carrier frames (601) are all fixedly installed with two limiting rings (602). The outer surfaces of the opposite sides of multiple said carrier frames (601) are all fixedly installed with limiting rods (603). The outer surfaces of multiple said limiting rods (603) are all movably sleeved with rotating gears (604). Every two adjacent ones of multiple said rotating gears (604) are in a group. A winding roller (605) is fixedly arranged between the outer surfaces of each group of said rotating gears (604).

10. The photovoltaic module wiring device with heat dissipation performance and electrical performance according to claim 9, characterized in that: A limiting post (606) is movably embedded between the opposite inner walls of multiple said limiting rings (602). A clamping block (607) is fixedly embedded on the surface of multiple said limiting posts (606). A coil spring (608) is arranged on the outer surface of the opposite sides of multiple said limiting rings (602). Every two adjacent ones of multiple said coil springs (608) are in a group. The outer surfaces of multiple said limiting posts (606) are respectively fixedly connected with one ends of each group of said coil springs (608). The two ends of multiple said limiting posts (606) respectively penetrate through the outside of each group of said coil springs (608). An odor sensor (7) is arranged on the outer surface of the junction box body (1).

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