Photovoltaic module wiring device with heat dissipation and electrical performance

Abstract

The present invention discloses a photovoltaic module wiring device with heat dissipation and electrical performance, which relates to the technical field of wiring devices and includes a junction box body, a heat dissipation plate fixed between the opposing inner walls of the junction box body, and a controller provided on the outer surface of the junction box body. This photovoltaic module wiring device with heat dissipation and electrical performance, in order to prevent the wires connected to the wiring device from short-circuiting and causing a fire, when an odor sensor detects a fire in the cable, first stops pressing the wire with a pressing block, fixes the first flange and the second flange in communication, moves the wire to the inside of a fireproof tube under the action of negative pressure, and moves the fireproof tube to the inside away from the wiring terminal, thereby protecting the junction box body. This solves the problem in the prior art that most photovoltaic module wiring devices do not have the function of automatically preventing external wires from catching fire, which easily makes them unable to be used normally.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring devices, in particular to a photovoltaic component wiring device with heat dissipation performance and electrical performance. Background Art

[0002] Photovoltaics refers to the technology of converting light energy directly into electrical energy, which is mainly achieved through photovoltaic modules. The photovoltaic principle is based on the photoelectric effect, that is, when photons hit semiconductor materials, they cause electrons to escape from their atoms, thereby generating electric current. The photovoltaic module wiring device is an electrical connection device used to connect and manage photovoltaic modules, designed 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, excessively high temperatures can easily cause the wiring equipment to overheat, increasing the risk of fire. The heat dissipation function helps to keep the equipment temperature within a safe range.

[0003] Existing photovoltaic panels are composed of multiple photovoltaic units, which can generate direct current under sunlight. Each photovoltaic module is equipped with a wiring device behind it. The function of the wiring device with electrical performance is to lead the current generated inside the photovoltaic module. The wires led out of the wiring device with electrical performance are connected to the inverter and battery energy storage system. However, since photovoltaic panels need to be exposed to sunlight for a long time, they need to be set up outdoors, which leads to the wiring device of the photovoltaic module being set up outdoors. Due to the complex outdoor environment and the erosion of wind and rain, the wires connected to the wiring device with electrical performance are prone to aging under wind, sun and temperature changes. However, since heat is generated when current passes through the wire, the heat dissipation device of the wiring device with electrical properties itself cannot effectively dissipate the heat of 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 cause a fire. Since the external wires are connected to the wiring device at this time, the fire will spread along the wires to the inside of the wiring device. However, most existing photovoltaic module wiring devices with electrical properties do not have the function of automatically separating the wires connected to them, which can easily cause the fire to spread to the inside of the wiring device with electrical properties, thereby causing a larger fire and causing the photovoltaic module wiring device to be unable to be used normally.

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

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

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: A photovoltaic module wiring device with heat dissipation and electrical performance, comprising a junction box body, a heat dissipation plate fixed between opposite inner walls of the junction box body, a controller provided on the outer surface of the junction box body, a plurality of junction assemblies for connecting external wires provided inside the junction box body, a fireproof protective assembly provided on one outer surface of each of the plurality of junction assemblies, an extension assembly for winding the wires provided on the other outer surface of each of the plurality of junction assemblies, a fireproof tube provided at one end of each of the plurality of fireproof tubes, a high-pressure tank for storing dry powder provided on the outer surface of each of the plurality of high-pressure tanks being sealed with a plastic ring, a positioning plate fixed to the surface of each of the plurality of junction box bodies, a multi-stage electric telescopic rod provided near both side edges of the outer surface of each of the plurality of positioning plates, a movable plate fixedly installed at one end of each of the multi-stage electric telescopic rods, two telescopic columns fixed to the inner walls of each of the plurality of fireproof tubes, a first spring provided on the outer surface of each of the plurality of telescopic columns, a clamping block fixedly installed at one end of each of the plurality of telescopic columns, and a push plate slidably connected to the interior of each of the plurality of fireproof tubes.

[0007] Preferably, each two adjacent movable plates form a group, and a first flange is fixed between the outer surfaces of each group of movable plates. A plurality of sealed cans are fixed to the outer surface of the junction box body by screws, and air pumps are fixed to the tops of the plurality of sealed cans near the center by screws. The air inlet ends of the plurality of air pumps are fixedly connected to the air inlet pipe, and the air outlet ends of the plurality of air pumps are fixedly connected to the air outlet pipe. Pressure sensors are provided on the outer surfaces of the plurality of sealed cans, and the outer surfaces of the plurality of sealed cans are fixedly connected to connecting pipes near the other end. A second flange is fixedly installed on one end of the plurality of connecting pipes, and solenoid valves are provided on the outer surfaces of the plurality of connecting pipes.

[0008] Preferably, the inner walls of the multiple positioning plates slide with the outer surfaces of the multiple fireproof tubes respectively, one ends of the multiple first springs are fixedly connected to the outer surfaces of the multiple clamping blocks respectively, the other ends of the multiple first springs are fixedly connected to the inner walls of the multiple fireproof tubes respectively, the outer surfaces of the multiple first flanges are fixedly connected to one ends of the multiple fireproof tubes respectively, one ends of the multiple air inlet pipes are fixedly passed through the interiors of the multiple sealed cans respectively, and one ends of the multiple air outlet pipes are fixedly passed through the interiors of the multiple sealed cans respectively.

[0009] Preferably, the plurality of wiring assemblies include wiring terminals, the plurality of wiring terminals are arranged on the outer surface of the wiring box body, one end of the plurality of fireproof tubes are movable through the interior of the plurality of wiring terminals, the outer surfaces of the plurality of wiring terminals are provided with wiring grooves, and the interiors of the plurality of fireproof tubes are respectively connected with the interiors of the plurality of wiring grooves.

[0010] Preferably, a pressing block is movably embedded in the interior of each of the wiring slots, a distance sensor is provided on the outer surface of each of the pressing blocks, a connecting rod is fixed on the top of each of the pressing blocks, the outer surfaces of the connecting rods slide with the inner walls of each of the wiring terminals respectively, a telescopic tube is fixedly installed on the relative inner walls of each of the wiring terminals, and a second spring is provided on the outer surface of each of the telescopic tubes.

[0011] Preferably, two adjacent second springs form a group, one end of each group of second springs is fixedly connected to the inner walls of a plurality of wiring terminals, the other end of each group of second springs is fixedly connected to the outer surfaces of a plurality of connecting rods, two adjacent telescopic tubes form a group, an extrusion 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 extrusion plates, one ends of the plurality of threaded rods are movably passed through the outside of the wiring terminals, and sliding rods are slidably connected to the insides of the plurality of wiring terminals.

[0012] Preferably, one end of each of the sliding rods is movable and extends through the outside of the terminal block, one end of each of the sliding rods is fixedly connected to a mounting plate, outer surfaces of each of the mounting plates are fixedly connected to one end of each of the threaded rods, outer surfaces of each of the threaded rods are threadedly sleeved with a driving gear, and outer surfaces of each of the driving gears are rotatably connected to the inside of each of the terminal blocks.

[0013] Preferably, the outer surfaces of the plurality of said terminal blocks are fixedly mounted with pressure-resistant frames, the inner walls of the plurality of said pressure-resistant frames are provided with forward and reverse motors, the output ends of the plurality of said forward and reverse motors are fixedly connected with driving rods, the outer surfaces of the plurality of said driving rods are fixedly sleeved with driving gears, one end of the plurality of said driving rods are movable and penetrate into the interior of the plurality of terminal blocks, and the outer surfaces of the plurality of said driving gears are respectively meshed and connected with the outer surfaces of the plurality of driving gears.

[0014] Preferably, the plurality of extension components include a supporting frame, the outer surfaces of one side of the plurality of supporting frames are fixedly connected to the outer surface of the junction box body by screws, the outer surfaces of the plurality of supporting frames are fixedly installed with two limiting rings, the opposite outer surfaces of the plurality of supporting frames are fixedly installed with limiting rods, the outer surfaces of the plurality of limiting rods are movably provided with rotating gears, each two adjacent rotating gears form a group, and a winding roller is fixed between the outer surfaces of each group of rotating gears.

[0015] Preferably, limiting columns are movably embedded between the relative inner walls of the plurality of limiting rings, blocking blocks are fixedly embedded on the surfaces of the plurality of limiting columns, coil springs are provided on the opposite outer surfaces of the plurality of limiting rings, and each two adjacent coil springs form a group. The outer surfaces of the plurality of limiting columns are respectively fixedly connected to one end of each group of coil springs, and the two ends of the plurality of limiting columns are respectively movably penetrated to the outside of each group of coil springs, and an odor sensor is provided on the outer surface of the junction box body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In order to prevent the wires connected to the wiring device from short-circuiting and causing fire, when the odor sensor detects a fire in the cable, it first stops pressing the wire with the pressing block, and fixes the first flange and the second flange to be connected. Under the action of negative pressure, the wire is moved and fixed inside the fireproof tube, and the fireproof tube is moved to the inside away from the wiring terminal to protect the junction box body. This solves the problem in the prior art that most photovoltaic module wiring devices do not have the function of automatically preventing external wires from catching fire, which makes them unable to be used normally.

[0018] 2. When using a photovoltaic module wiring device with electrical performance to connect external wires, first wrap a portion of each wire around the outer surface of the corresponding winding roller, insert one end of the wire into the corresponding wiring slot, and use the pressing block to press and position the wire inserted into the wiring slot, which facilitates the connection and fixation of the wires in the wiring device.

[0019] 3. In order to facilitate the movement of the wire into the interior of the fireproof tube, when the wire moves into the interior of the fireproof tube, the two rotating gears are driven to rotate counterclockwise under the action of tension. In order to prevent the wire wrapped on the surface of the winding roller from being pulled off the surface of the winding roller, the rectangular block set in the limit ring can effectively prevent the rotating gear from rotating clockwise as the external wire is pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front perspective view of a photovoltaic module wiring device with heat dissipation and electrical performance according to the present invention;

[0021] Figure 2 A three-dimensional diagram of the junction box body of a photovoltaic module wiring device with heat dissipation and electrical performance according to the present invention;

[0022] Figure 3 A partially cutaway perspective view of a wiring assembly of a photovoltaic assembly wiring device having heat dissipation and electrical performance according to the present invention;

[0023] Figure 4 For the present invention Figure 3Enlarged view of point A in the middle;

[0024] Figure 5 This is a cross-sectional perspective view of a partial structure of a connection terminal of a photovoltaic module connection device having heat dissipation and electrical performance according to the present invention;

[0025] Figure 6 A three-dimensional diagram of a protective component portion of a photovoltaic module wiring device having heat dissipation and electrical performance according to the present invention;

[0026] Figure 7 A partially cutaway perspective view of a sealed can of a photovoltaic module wiring device having both heat dissipation and electrical performance according to the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0028] Figure 9 For the present invention Figure 7 Enlarged view of point C in the middle;

[0029] Figure 10 A perspective view of an extended component portion of a photovoltaic module wiring device having heat dissipation and electrical performance according to the present invention;

[0030] Figure 11 A partially cutaway perspective view of a rotating gear of a photovoltaic module wiring device having heat dissipation and electrical performance according to the present invention;

[0031] Figure 12 A partially cutaway perspective view of a limiting ring of a photovoltaic module wiring device having both heat dissipation and electrical performance according to the present invention;

[0032] Figure 13 For the present invention Figure 12 Enlarged view of point D in the middle;

[0033] Figure 14 This is a three-dimensional diagram of the card block portion of a photovoltaic module wiring device with heat dissipation and electrical performance according to the present invention.

[0034] In the picture:

[0035] 1. Junction box body; 2. Heat sink; 3. Controller; 4. Wiring assembly; 401. Wiring terminal; 402. Wiring slot; 403. Press block; 404. Distance sensor; 405. Connecting rod; 406. Telescopic tube; 407. Second spring; 408. Extrusion plate; 409. Sliding rod; 410. Mounting plate; 411. Threaded rod; 412. Driving gear; 413. Anti-pressure frame; 414. Forward and reverse motor; 415. Driving rod; 416. Driving gear; 5. Protection assembly; 501. Fireproof tube; 502. High-pressure tank; 503. Plastic ring; 504. Positioning plate; 50 5. Multi-stage electric telescopic rod; 506. Moving plate; 507. Telescopic column; 508. First spring; 509. Clamping block; 510. Push plate; 511. First flange; 512. Second flange; 513. Connecting pipe; 514. Solenoid valve; 515. Sealing can; 516. Air pump; 517. Inlet pipe; 518. Outlet pipe; 519. Pressure sensor; 6. Extension assembly; 601. Carrying frame; 602. Limiting ring; 603. Limiting rod; 604. Rotating gear; 605. Winding roller; 606. Limiting column; 607. Block; 608. Coil spring; 7. Odor sensor. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1-14 The present invention provides a technical solution: a photovoltaic module wiring device with heat dissipation performance and electrical performance, multiple wiring components 4 all include wiring terminals 401, multiple wiring terminals 401 are all arranged on the outer surface of the junction box body 1, one end of multiple fireproof tubes 501 respectively movably penetrates into the interior of the multiple wiring terminals 401, the outer surfaces of the multiple wiring terminals 401 are provided with wiring grooves 402, the interiors of the multiple fireproof tubes 501 are respectively connected with the interiors of the multiple wiring grooves 402, the interiors of the multiple wiring grooves 402 are movably embedded with pressing blocks 403, the outer surfaces of the multiple pressing blocks 403 are provided with distance sensors 404, the tops of the multiple pressing blocks 403 are fixed with connecting rods 405, the outer surfaces of the multiple connecting rods 405 slide with the inner walls of the multiple wiring terminals 401 respectively, the relative inner walls of the multiple wiring terminals 401 are fixed with telescopic tubes 406, and the outer surfaces of the multiple telescopic tubes 406 are provided with second springs 407.

[0038] In this embodiment, when using a photovoltaic module wiring device with electrical performance to connect external wires, firstly, each wire is wound around a portion and placed on the outer surface of its corresponding winding roller 605, and then one end of the wire is inserted into the interior of the corresponding wiring slot 402, and the forward and reverse motors 414 are started by the controller 3 to drive the driving rod 415 to rotate, thereby driving the driving gear 416 to rotate, thereby driving the driving gear 412 to rotate, and then driving the threaded rod 411 to move toward the extrusion plate 408, thereby pressing the extrusion plate 408, so that the two corresponding second springs 407 are stretched by tension, thereby causing the connecting rod 405 to move toward the pressing block 403, so that the pressing Block 403 presses and positions the wire inserted into the wiring slot 402, and starts the distance sensor 404 at the same time, wherein the distance sensor 404 emits ultrasonic signals outward, and these sound waves will be reflected back to the sensor when encountering 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 a large amplitude, 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.

[0039] like Figures 1-9As shown, 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 set on the outer surface of the junction box body 1, and a plurality of junction components 4 for connecting external wires are set inside the junction box body 1. A fire protection component 5 is set on the outer surface of one side of the plurality of junction components 4. An extension component 6 for winding the wire is set on the outer surface of the other side of the plurality of junction components 4. The plurality of protection components 5 include a fireproof tube 501. One end of the plurality of fireproof tubes 501 is provided with a high-pressure tank 502 for storing dry powder. The outer surfaces of the plurality of high-pressure tanks 502 are sealed with a plastic ring 503. The surface of the plurality of junction box bodies 1 is fixed with Positioning plate 504, multiple positioning plates 504 are provided with multi-stage electric telescopic rods 505 on the outer surfaces near the edges on both sides, and one end of the multiple multi-stage electric telescopic rods 505 is fixedly installed with a movable plate 506, the inner wall of the multiple fireproof tubes 501 is fixed with two telescopic columns 507, the outer surface of the multiple telescopic columns 507 is provided with a first spring 508, and one end of the multiple telescopic columns 507 is fixedly installed with a clamping block 509, and the interior of the multiple fireproof tubes 501 is slidably connected with a push plate 510, and each adjacent two of the multiple movable plates 506 are grouped together, and a first flange 511 is fixed between the outer surfaces of each group of movable plates 506, and the outer surface of the junction box body 1 is fixed with multiple sealing tanks 515 by screws, and the tops of the multiple sealing tanks 515 are close to the center Air pumps 516 are fixed by screws at each end, and the air inlet ends of the multiple air pumps 516 are fixedly connected to the air inlet pipe 517, and the air outlet ends of the multiple air pumps 516 are fixedly connected to the air outlet pipe 518. Pressure sensors 519 are provided on the outer surfaces of the multiple sealed tanks 515, and the outer surfaces of the multiple sealed tanks 515 are fixedly connected to the connecting pipe 513 near the other end. One end of the multiple connecting pipes 513 is fixedly installed with a second flange 512, and the outer surfaces of the multiple connecting pipes 513 are provided with solenoid valves 514. The inner walls of the multiple positioning plates 504 slide with the outer surfaces of the multiple fireproof pipes 501 respectively, and one end of the multiple first springs 508 is fixedly connected to the outer surfaces of the multiple clamping blocks 509 respectively, and the other ends of the multiple first springs 508 are fixedly connected to the multiple fireproof pipes 501 respectively. The inner wall of the fire tube 501 is fixedly connected, the outer surfaces of the multiple first flanges 511 are respectively fixedly connected to one end of the multiple fireproof tubes 501, one end of the multiple air inlet pipes 517 are respectively fixed to the interior of the multiple sealed cans 515, one end of the multiple air outlet pipes 518 are respectively fixed to the interior of the multiple sealed cans 515, one end of the multiple sliding rods 409 are respectively movably penetrated to the outside of the terminal 401, one end of the multiple sliding rods 409 are all fixedly connected to the mounting plate 410, the outer surfaces of the multiple mounting plates 410 are respectively fixedly connected to one end of the multiple threaded rods 411, the outer surfaces of the multiple threaded rods 411 are all threadedly sleeved with drive gears 412, and the outer surfaces of the multiple drive gears 412 are respectively rotatably connected to the interior of the multiple terminal 401.A pressure-resistant frame 413 is fixedly mounted on the outer surfaces of the multiple terminal blocks 401. A forward and reverse motor 414 is installed on the inner wall of each of the multiple pressure-resistant frames 413. The output ends of each of the multiple forward and reverse motors 414 are fixedly connected to a drive rod 415. A driving gear 416 is fixedly sleeved on the outer surface of each of the multiple driving rods 415. One end of each of the multiple driving rods 415 is movable and extends into the interior of each of the multiple terminal blocks 401. The outer surfaces of the multiple driving gears 416 are meshed and connected with the outer surfaces of the multiple driving gears 412.

[0040] In this embodiment, in order to prevent the wires connected to the wiring device from short-circuiting and causing a fire, the odor sensor 7 is first turned on. The odor sensor 7 uses 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 usable electrical signals to determine whether there is a fire risk. When the odor sensor 7 detects that the wire connected to it is on fire, since it cannot detect which specific wire has failed, multiple forward and reverse motors 414 are started, driving multiple driving gears 416 to rotate in the opposite direction, and then driving multiple driving gears 412 to rotate in the opposite direction. Figure 5 As shown, the cross section of the portion of the driving gear 412 connected to the terminal 401 is T-shaped, the purpose of which is to limit the driving gear 412 while facilitating its rotation. The driving gear 412 drives the threaded rod 411 to move toward the mounting plate 410, thereby driving the extrusion plate 408 to move, stopping the extrusion of the connecting rod 405, and then making the connecting rod 405 move toward the mounting plate 410 under the elastic action of the two second springs 407, thereby driving the pressing block 403 to move out of the interior of the wiring groove 402, thereby stopping the pressing of the wire, and at the same time starting the air pump 516, driving the air inlet pipe 517 to extract gas into the interior of the sealing tank 515, thereby making the interior of the sealing tank 515 in a negative pressure state, and through the pressure sensor 5 19 detects the pressure in the sealed tank 515. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, the pressure sensor 519 is based on converting physical pressure into a measurable electrical signal. The pressure sensor 519 includes a sensing element, which is sensitive to the pressure change in the sealed tank 515. By utilizing the characteristic that the material deforms when subjected to pressure, the sensing element will undergo a slight deformation under the action of pressure, thereby changing its resistance value. The controller 3 starts the two multi-stage electric telescopic rods 505 to extend them, driving the two movable plates 506 to move forward, thereby driving the first flange 511 to move toward the second flange 512 until the outer surfaces of the first flange 511 and the second flange 512 are tightly attached. Figure 9As shown, sealing rings are provided inside the first flange 511 and the second flange 512, the purpose of which is to ensure a sealed connection between the fireproof pipe 501 and the connecting pipe 513. At this time, the solenoid valve 514 can be opened by the controller 3, so that the wires arranged in the corresponding wiring slots 402 and the push plate 510 arranged in the fireproof pipe 501 are respectively moved toward the connecting pipe 513 under the action of negative pressure. The inner diameters of the two ends of the fireproof pipe 501 are respectively smaller than the outer diameters of the push plate 510, the purpose of which is to limit the push plate 510. When the push plate 510 moves to the outer surface close to the two clamping blocks 509, it will squeeze the two clamping blocks 509. Figure 8 As 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. The clamping blocks 509 are respectively moved to the following positions under the extrusion of the push plate 510: Figure 8When the two clamping blocks 509 are respectively separated from the outer surface of the push plate 510, the two clamping blocks 509 will move toward each other under the elastic force of the two first springs 508, thereby clamping and fixing the wire following the push plate 510, thereby achieving the positioning of the wire. Since the pressure in the wiring slot 402 is much greater than the pressure in the sealing tank 515, and the mass of the wire is lower than the mass of the push plate 510, the push plate 510 is pushed under the pressure difference. During the movement of one end of the wire, the wire will follow the push plate 510, and then the air pump 516 and the solenoid valve 514 can be closed, and the two multi-stage electric telescopic rods 505 can be started at the same time to shorten them, thereby driving the two moving plates 506 to move toward the direction of the corresponding terminal 401, thereby separating the first flange 511 and the second flange 512, and then the fireproof tube 501 drives the wire to move to the outside of the terminal 401 to a position away from the terminal 401, until the outside of the two moving plates 506 is The surfaces are in contact with the outer surface of the terminal 401. When the fire in the wire moves to a position in contact with the outer surface of the fireproof tube 501, the plastic ring 503 provided on the end face of the fireproof tube 501 will be burned first, wherein the plastic ring 503 plays a sealing role for the interior of the high-pressure groove 502. According to the principle that plastic melts when it encounters fire, when the plastic ring 503 is melted, the high-pressure dry powder provided in the fireproof tube 501 will be released and sprayed outward to extinguish the fire source on the wire. In addition, even if the dry powder fails to extinguish the fire, since the wire has been moved out of the interior of the junction box body 1, when the fire source extends to the interior of the fireproof tube 501, since the fireproof tube 501 and the push plate 510 are both made of metal copper, they will not cause damage to other electrical components in the junction box body 1. Through the action of the junction assembly 4, the photovoltaic module wiring device with electrical performance is effectively prevented from being damaged due to the influence of the wire short circuit, thereby solving the problem that most photovoltaic module wiring devices in the prior art do not have the function of automatically preventing external wire fire, which makes it easy for them to be unable to be used normally.

[0041] like Figure 1-Figure 2 and Figure 6-Figure 14As shown, multiple extension components 6 include a carrier 601, and the outer surfaces of one side of the multiple carriers 601 are fixedly connected to the outer surface of the junction box body 1 by screws. Two limiting rings 602 are fixedly installed on the outer surfaces of the multiple carriers 601, and the opposite outer surfaces of the multiple carriers 601 are fixedly installed with limiting rods 603. The outer surfaces of the multiple limiting rods 603 are movably sleeved with rotating gears 604. Each adjacent two of the multiple rotating gears 604 form a group, and a retracting ring is fixed between the outer surfaces of each group of rotating gears 604. Roller 605, limiting posts 606 are movably embedded between the relative inner walls of multiple limiting rings 602, and blocks 607 are fixedly embedded on the surfaces of multiple limiting posts 606. Coil springs 608 are set on the opposite outer surfaces of multiple limiting rings 602, and each two adjacent coil springs 608 form a group. The outer surfaces of the multiple limiting posts 606 are respectively fixedly connected to one end of each group of coil springs 608, and the two ends of the multiple limiting posts 606 are respectively movably penetrated to the outside of each group of coil springs 608. An odor sensor 7 is set on the outer surface of the junction box body 1.

[0042] In this embodiment, in order to facilitate the movement of the wire to the inside of the fireproof tube 501, when the wire moves into the inside of the fireproof tube 501, it will pull the wire wrapped on the surface of the winding roller 605, causing it to rotate counterclockwise under the action of the tension, thereby driving the two rotating gears 604 to rotate counterclockwise, thereby causing the two clamping blocks 607 to rotate to the inside of the limit ring 602 under the action of the teeth on the surface of the rotating gear 604, and the two clamping blocks 607 are then reset under the elastic force of the coil spring 608, and so on and so forth 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 process of being connected to the terminal 401, in order to prevent the wire wrapped on the surface of the winding roller 605 from being pulled off the surface of the winding roller 605, as shown in the following example. Figure 13 The rectangular stopper provided in the limiting ring 602 can effectively prevent the rotating gear 604 from rotating clockwise as the external wire is pulled.

[0043] like Figure 2 and Figures 6-10As shown, each adjacent two movable plates 506 form a group, and a first flange 511 is fixed between the outer surfaces of each group of movable plates 506. A plurality of sealed tanks 515 are fixed to the outer surface of the junction box body 1 by screws, and air pumps 516 are fixed to the tops of the plurality of sealed tanks 515 near the center by screws. The air inlet ends of the plurality of air pumps 516 are fixedly connected to the air inlet pipe 517, and the air outlet ends of the plurality of air pumps 516 are fixedly connected to the air outlet pipe 518. Pressure sensors 519 are provided on the outer surfaces of the plurality of sealed tanks 515, and the outer surfaces of the plurality of sealed tanks 515 are fixedly connected to the connecting pipe 513 near the other end. One end of the plurality of connecting pipes 513 is fixedly installed with a second flange 512, and the outer surfaces of the plurality of connecting pipes 513 are provided with a solenoid valve 514. The plurality of wiring components 4 include connecting Wire terminal 401, multiple wiring terminals 401 are all arranged on the outer surface of the junction box body 1, one end of multiple fire-proof tubes 501 are respectively movably penetrated into the interior of multiple wiring terminals 401, the outer surfaces of multiple wiring terminals 401 are provided with wiring grooves 402, the interiors of multiple fire-proof tubes 501 are respectively connected with the interiors of multiple wiring grooves 402, the interiors of multiple wiring grooves 402 are movably embedded with pressing blocks 403, the outer surfaces of multiple pressing blocks 403 are provided with distance sensors 404, the tops of multiple pressing blocks 403 are fixed with connecting rods 405, the outer surfaces of multiple connecting rods 405 slide with the inner walls of multiple wiring terminals 401 respectively, the relative inner walls of multiple wiring terminals 401 are fixed with telescopic tubes 406, and the outer surfaces of multiple telescopic tubes 406 are provided with second springs 407.

[0044] In this embodiment, after the staff detects which wire is on fire and extinguishes it, the controller 3 is used to start the other multiple air pumps 516 except the one corresponding to the burning wire, and drive the multiple air inlet pipes 517 to respectively deliver gas to the interior of the multiple sealed tanks 515, so that the interior of the sealed tanks 515 is in a high-pressure state. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, the multiple multi-stage electric telescopic rods 505 except the one corresponding to the burning wire are started again to extend, driving the multiple first flanges 511 to move to tightly fit with the outer surfaces of the multiple second flanges 512, thereby driving the fire tube 501 to reset, and the fire can be opened again. Multiple solenoid valves 514 are opened, and under the action of the pressure difference, multiple push plates 510 are driven to move toward the inside of the wiring groove 402, thereby pushing the wire to move toward the inside of the wiring groove 402. Since the pressure difference between the inside of the sealing tank 515 and the inside of the wiring groove 402 is small at this time, the movement amplitude of the push plate 510 and the wire is small, and under the limiting action of the winding roller 605, the wire will not be completely moved out of the inside of the wiring groove 402. When the wire moves to the inside of the wiring groove 402, multiple forward and reverse motors 414 except for the corresponding wire that is on fire can be started to drive the pressing block 403 to move toward the inside of the wiring groove 402 to press the wire, thereby achieving the reset of the wire that is not on fire.

[0045] The method of use and working principle of this device: When using a photovoltaic module wiring device with electrical performance to connect external wires, first wrap a portion of each wire around the outer surface of its corresponding winding roller 605, and then insert one end of the wire into the inside of the corresponding wiring slot 402, and start the forward and reverse motor 414 through the controller 3 to drive the driving rod 415 to rotate, thereby driving the active gear 416 to rotate, thereby driving the driving gear 412 to rotate, and then driving the threaded rod 411 to move in the direction of the extrusion plate 408, thereby pressing the extrusion plate 408, so that the relative The two corresponding second springs 407 are stretched by tension, so that the connecting rod 405 moves toward the pressing block 403, so that the pressing block 403 presses and positions the wire inserted into the wiring slot 402, and at the same time starts the distance sensor 404. When it is detected that the pressing block 403 no longer moves a large amplitude, 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 wire connected to the wiring device from short-circuiting and causing a fire, the odor sensor 7 is first turned on. When the odor sensor 7 detects that the wire connected to it is on fire When the fault occurs, since it is impossible to detect which wire is faulty, multiple forward and reverse motors 414 are started, driving multiple driving gears 416 to rotate in the opposite direction, thereby driving multiple driving gears 412 to rotate in the opposite direction, and the driving gear 412 drives the threaded rod 411 to move toward the mounting plate 410, thereby driving the extrusion plate 408 to move, stopping the extrusion of the connecting rod 405, and then making the connecting rod 405 move toward the mounting plate 410 under the elastic action of the two second springs 407, thereby driving the pressing block 403 to move out of the interior of the wiring slot 402, thereby stopping the pressing of the wire, and starting the gas. The pump 516 drives the air inlet pipe 517 to extract gas into the interior of the sealed tank 515, thereby making the interior of the sealed tank 515 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 two multi-stage electric telescopic rods 505 can be activated by the controller 3 to extend, drive the two movable plates 506 to move forward, and then drive the first flange 511 to move toward the second flange 512 until the outer surfaces of the first flange 511 and the second flange 512 are tightly attached to each other. Figure 9As shown, sealing rings are provided inside the first flange 511 and the second flange 512, the purpose of which is to ensure that the fire protection pipe 501 and the connecting pipe 513 are sealed and connected. At this time, the solenoid valve 514 can be opened by the controller 3, so that the wires arranged in the corresponding wiring slots 402 and the push plate 510 arranged in the fire protection pipe 501 are respectively moved toward the connecting pipe 513 under the action of negative pressure. When the push plate 510 moves to the outer surface close to the two clamping blocks 509, it will squeeze the two clamping blocks 509, and then After that, the air pump 516 and the solenoid valve 514 can be closed, and the two multi-stage electric telescopic rods 505 can be started at the same time to shorten them, thereby driving the two movable plates 506 to move toward the direction of the corresponding terminal 401, thereby separating the first flange 511 and the second flange 512, and then the fire protection tube 501 drives the wire to move to the outside of the terminal 401 to a position away from the terminal 401, until the outer surfaces of the two movable plates 506 are in contact with the outer surface of the terminal 401. When the fire in the wire moves to the position of contact with the fire protection tube, the fire protection tube 501 is opened. When the outer surface of the fire tube 501 contacts the position, the plastic ring 503 set on the end face of the fire tube 501 will be burned first. According to the principle that plastic melts when it encounters liveness, when the plastic ring 503 is melted, the high-pressure dry powder set in the fire tube 501 will be released and sprayed outward to extinguish the fire source on the wire. In order to facilitate the movement of the wire into the interior of the fire tube 501, when the wire moves into the interior of the fire tube 501, it will pull the wire wrapped on the surface of the winding roller 605, causing it to rotate counterclockwise under the action of the tension, and then The two rotating gears 604 are driven to rotate counterclockwise, thereby causing the two clamping blocks 607 to rotate to the inside 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 then reset under the elastic force of the coil spring 608, and this process is repeated 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 process of connecting to 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, the following method is used: Figure 13The rectangular block shown in the limit ring 602 prevents the rotating gear 604 from rotating clockwise as the external wire is pulled. When the staff detects which wire is on fire and extinguishes it, the controller 3 is used to start multiple air pumps 516 other than the one corresponding to the burning wire, and drives multiple air inlet pipes 517 to respectively deliver gas to the interior of multiple sealed tanks 515, so that the interior of the sealed tank 515 is in a high-pressure state. When the pressure sensor 519 detects that the pressure value in the sealed tank 515 reaches the required value, the multiple multi-stage electric telescopic rods 505 other than the one corresponding to the burning wire are started again to extend, driving the multiple first flanges 511 to move to tightly fit with the outer surfaces of the multiple second flanges 512, thereby driving the fire protection tube 501 to reset. At this time, the multiple solenoid valves 514 can be opened again, and the multiple solenoid valves 514 can be driven under the action of the pressure difference to drive the multiple The push plates 510 move toward the inside of the wiring slot 402 respectively, thereby pushing the wire to move toward the inside of the wiring slot 402. Since the pressure difference between the sealing tank 515 and the wiring slot 402 is small at this time, the push plates 510 and the wires move with a small amplitude, and under the limiting action of the winding roller 605, the wires will not be completely moved out of the wiring slot 402. When the wires move to the inside of the wiring slot 402, multiple forward and reverse motors 414 except for the ones corresponding to the burning wires can be started to drive the pressing blocks 403 to move toward the inside of the wiring slot 402, pressing the wires to achieve the reset of the unburned wires. Among them, the controller 3 and the wiring box body 1, the controller 3, the distance sensor 404, the forward and reverse motors 414, the multi-stage electric telescopic rod 505, the solenoid valve 514, the air pump 516, the pressure sensor 519 and the odor sensor 7 are all electrically connected.

[0046] The wiring diagram of the junction box body 1, controller 3, distance sensor 404, forward and reverse motor 414, multi-stage electric telescopic rod 505, solenoid valve 514, air pump 516, pressure sensor 519 and odor sensor 7 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The models are selected according to actual use. Therefore, the control method and wiring layout of the junction box body 1, controller 3, distance sensor 404, forward and reverse motor 414, multi-stage electric telescopic rod 505, solenoid valve 514, air pump 516, pressure sensor 519 and odor sensor 7 will not be explained in detail.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic module wiring device with heat dissipation performance and electrical performance, comprising a junction box body (1), a heat dissipation plate (2) fixed between opposite inner walls of the junction box body (1), a controller (3) arranged on the outer surface of the junction box body (1), a plurality of junction assemblies (4) for connecting external wires arranged inside the junction box body (1), a fire protection assembly (5) arranged on one side outer surface of the plurality of junction assemblies (4), and an extension assembly (6) for winding the wires arranged on the other side outer surface of the plurality of junction assemblies (4), characterized in that: The plurality of protection components (5) include a fireproof tube (501), one end of each of the plurality of fireproof tubes (501) is provided with a high-pressure tank (502) for storing dry powder, the outer surfaces of each of the plurality of high-pressure tanks (502) are sealed with a plastic ring (503), the surfaces of each of the plurality of junction box bodies (1) are fixed with a positioning plate (504), the outer surfaces of each of the plurality of positioning plates (504) are provided with a multi-stage electric telescopic rod (505) near the edges on both sides, one end of each of the plurality of multi-stage electric telescopic rods (505) is fixedly installed with a moving plate (506), the inner walls of each of the plurality of fireproof tubes (501) are fixed with two telescopic columns (507), the outer surfaces of each of the plurality of telescopic columns (507) are provided with a first spring (508), one end of each of the plurality of telescopic columns (507) is fixedly installed with a clamping block (509), and the interiors of each of the plurality of fireproof tubes (501) are slidably connected with a push plate (510); Each adjacent two of the plurality of movable plates (506) form a group, and a first flange (511) is fixed between the outer surfaces of each group of movable plates (506); a plurality of sealed cans (515) are fixed to the outer surface of the junction box body (1) by screws; an air pump (516) is fixed to the top of the plurality of sealed cans (515) near the center by screws; the air inlet ends of the plurality of air pumps (516) are fixedly connected to an air inlet pipe (517); the air outlet ends of the plurality of air pumps (516) are fixedly connected to an air outlet pipe (518); a pressure sensor (519) is provided on the outer surfaces of the plurality of sealed cans (515); a connecting pipe (513) is fixedly connected to the outer surfaces of the plurality of sealed cans (515) near the other end; a second flange (512) is fixedly installed at one end of the plurality of connecting pipes (513); and a solenoid valve (514) is provided on the outer surfaces of the plurality of connecting pipes (513); The inner walls of the plurality of positioning plates (504) slide respectively with the outer surfaces of the plurality of fireproof tubes (501), one ends of the plurality of first springs (508) are fixedly connected to the outer surfaces of the plurality of clamping blocks (509), the other ends of the plurality of first springs (508) are fixedly connected to the inner walls of the plurality of fireproof tubes (501), the outer surfaces of the plurality of first flanges (511) are fixedly connected to one ends of the plurality of fireproof tubes (501), one ends of the plurality of air inlet pipes (517) are fixedly passed through the interior of the plurality of sealed tanks (515), and one ends of the plurality of air outlet pipes (518) are fixedly passed through the interior of the plurality of sealed tanks (515); The plurality of wiring assemblies (4) each include a wiring terminal (401), the plurality of wiring terminals (401) are each arranged on the outer surface of the wiring box body (1), one end of the plurality of fireproof tubes (501) is movably inserted into the interior of the plurality of wiring terminals (401), the outer surfaces of the plurality of wiring terminals (401) are each provided with a wiring groove (402), the interior of the plurality of fireproof tubes (501) is respectively connected to the interior of the plurality of wiring grooves (402); and an odor sensor (7) is provided on the outer surface of the wiring box body (1).

2. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 1, characterized in that: A pressing block (403) is movably embedded in the interior of the plurality of wiring slots (402), a distance sensor (404) is provided on the outer surface of the plurality of pressing blocks (403), a connecting rod (405) is fixed on the top of the plurality of pressing blocks (403), the outer surfaces of the plurality of connecting rods (405) slide with the inner walls of the plurality of wiring terminals (401) respectively, a telescopic tube (406) is fixedly installed on the opposite inner walls of the plurality of wiring terminals (401), and a second spring (407) is provided on the outer surface of the plurality of telescopic tubes (406).

3. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 2, characterized in that: Two adjacent second springs (407) form a group, one end of each group of second springs (407) is fixedly connected to the inner wall of the plurality of connecting terminals (401), and the other end of each group of second springs (407) is fixedly connected to the outer surface of the plurality of connecting rods (405). Two adjacent second springs (406) form a group, and an extrusion plate (408) is fixedly installed between one end of each group of telescopic tubes (406). Threaded rods (411) are fixed to the outer surfaces of the plurality of extrusion plates (408), and one end of the plurality of threaded rods (411) is movably passed through the outside of the connecting terminals (401). The interior of the plurality of connecting terminals (401) is slidably connected to a sliding rod (409).

4. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 3, characterized in that: One end of each of the plurality of slide rods (409) is movable and extends through the outside of the terminal block (401), one end of each of the plurality of slide rods (409) is fixedly connected to a mounting plate (410), outer surfaces of each of the plurality of mounting plates (410) are fixedly connected to one end of each of the plurality of threaded rods (411), outer surfaces of each of the plurality of threaded rods (411) are threadedly sleeved with a driving gear (412), and outer surfaces of each of the plurality of driving gears (412) are rotatably connected to the inside of each of the plurality of terminal blocks (401).

5. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 4, characterized in that: The outer surfaces of the plurality of terminal blocks (401) are fixedly mounted with a pressure-resistant frame (413), the inner walls of the plurality of pressure-resistant frames (413) are provided with a forward and reverse motor (414), the output ends of the plurality of forward and reverse motors (414) are fixedly connected with a driving rod (415), the outer surfaces of the plurality of driving rods (415) are fixedly sleeved with a driving gear (416), one end of the plurality of driving rods (415) is movably inserted into the interior of the plurality of terminal blocks (401), and the outer surfaces of the plurality of driving gears (416) are respectively meshed and connected with the outer surfaces of the plurality of driving gears (412).

6. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 5, characterized in that: The plurality of extension components (6) each include a carrier (601), one side outer surface of each of the plurality of carriers (601) is fixedly connected to the outer surface of the junction box body (1) by screws, two limiting rings (602) are fixedly installed on the outer surfaces of each of the plurality of carriers (601), limiting rods (603) are fixedly installed on the opposite outer surfaces of each of the plurality of carriers (601), and the outer surfaces of each of the plurality of limiting rods (603) are movably sleeved with rotating gears (604), and each adjacent two of the plurality of rotating gears (604) form a group, and a winding roller (605) is fixed between the outer surfaces of each group of rotating gears (604).

7. The photovoltaic module wiring device with heat dissipation and electrical performance according to claim 6, characterized in that: A plurality of limiting rings (602) are movably embedded with limiting posts (606) between their relative inner walls, a plurality of limiting posts (606) are fixedly embedded with a clamping block (607) on their surfaces, a plurality of limiting rings (602) are provided with a coil spring (608) on their opposite outer surfaces, and each two adjacent coil springs (608) form a group, the outer surfaces of the plurality of limiting posts (606) are respectively fixedly connected to one end of each group of coil springs (608), and the two ends of the plurality of limiting posts (606) are respectively movably penetrated to the outside of each group of coil springs (608).

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