Self-heat-dissipation energy-saving photovoltaic distribution box

Abstract

The invention discloses a self-heat-dissipation energy-saving photovoltaic distribution box which comprises a machine body and an upper closing door, the upper closing door is installed on the front side of the upper portion of the machine body through hinges, a top plate is installed at the top of the machine body in a positioning mode, the top plate is in a trapezoid shape, and a collection seat is installed in a groove in the inner side of the top of the top plate in a penetrating and sliding mode. The self-heat-dissipation energy-saving photovoltaic distribution box is provided with cleaning brush plates, telescopic rods are installed at the two ends of the bottom of a machine body in a positioned mode, then the top ends of the two telescopic rods are connected with moving plates through reset springs, and meanwhile the cleaning brush plates are arranged at the outer ends of the two moving plates; when dust and impurities adhered to the two heat dissipation nets need to be cleaned in the later period, only two movable plates need to be extruded to drive two cleaning brush plates to movably clean the dust and impurities adhered to the two heat dissipation nets, and the situation that the dust and impurities adhere to the two heat dissipation nets, and later heat dissipation and discharge are affected is avoided; and the heat dissipation efficiency of the photovoltaic distribution box is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic distribution boxes, and in particular to a self-heating and energy-saving photovoltaic distribution box. Background Art

[0002] The photovoltaic distribution box is a key component in the photovoltaic power generation system. It is mainly used to connect and control the power flow between the generator and the power grid to realize the grid-connected power supply of photovoltaic power generation. In the photovoltaic power generation system, the photovoltaic panels convert the light energy into DC power by absorbing sunlight. The DC power is then collected and transmitted to the photovoltaic distribution box. The inverter in the distribution box converts the DC power into AC power and transmits the AC power to the grid through the grid-connected switch. During the grid-connected process, the on-off time of the grid-connected switch needs to be controlled to ensure the smooth transmission of current and avoid impact on the grid. When the photovoltaic distribution box is used in conjunction with power supply, because the traditional photovoltaic distribution box is equipped with heat dissipation nets on both sides of the bottom to facilitate the later heat dissipation of the electronic components inside the photovoltaic distribution box, but the traditional photovoltaic distribution box does not have an exhaust mechanism inside to exhaust the heat generated by its internal use, which will cause the heat to accumulate inside the fuselage and cannot be evenly dissipated, which will affect the normal heat dissipation of the photovoltaic distribution box in the later stage; In order to overcome the above defects, in the photovoltaic distribution box of the prior art 1 (application number CN201721767012.2, the application date is 2017-12-18 Chinese patent), a device that can expand the ventilation area is jointly constructed by the arrangement of the ring gear, the motor, the driving gear, the ring groove, the slider, the transmission shaft, the driven gear and the fan, and a layered photovoltaic distribution box is jointly constructed by the arrangement of the box body, the partition and the through hole. The cooperation of the above structures meets the purpose of good ventilation and heat dissipation effect and relatively low safety hazards, and solves the problems of poor ventilation and heat dissipation effect and relatively high safety hazards; There is also prior art 2 (application number CN201720558212.0, Chinese patent application date 2017-05-19) in which a photovoltaic distribution box with heat dissipation holes is provided on both sides of the box body, which can dissipate heat while blocking rainwater through the rain shield; the insect-proof net can prevent mosquitoes from entering the distribution box, preventing the electrical components and circuits in the distribution box from being damaged and causing significant losses; And prior art 3 (Chinese patent with application number CN202122669312.X and application date 2021-11-03) In a photovoltaic grid-connected distribution box, the coordination between the mounting frame, the support frame, the slide rail, the latch and the fan can accelerate the heat dissipation through air flow, and the action position and action height of the fan can be adjusted according to actual needs, which is more flexible to use and can carry out directional heat dissipation for electronic equipment with more serious heat generation; Although the existing technology can quickly discharge and dissipate the heat generated by the use of the photovoltaic distribution box, avoid the heat accumulation inside the photovoltaic distribution box and cause the electronic devices to short-circuit due to high temperature heat, thereby improving the service life of the photovoltaic distribution box, but when the photovoltaic distribution box is used in rainy and snowy weather, the heat dissipation net will cause external rainwater to penetrate into the interior of the fuselage, and no sealing mechanism is provided to prevent water seepage for the photovoltaic distribution box used in rainy and snowy weather, which will cause the later leaked rainwater to cause short circuits to the electronic devices inside the box; Therefore, we propose a self-heating and energy-saving photovoltaic distribution box to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a self-heating energy-saving photovoltaic distribution box to solve the problem raised by the above background technology that when the photovoltaic distribution box is used in rainy and snowy weather, the heat dissipation net will cause external rainwater to penetrate into the interior of the box body, and no sealing mechanism is provided to provide water-proof protection for the photovoltaic distribution box used in rainy and snowy weather, which may cause the leaked rainwater to short-circuit the internal electronic components.

[0004] To achieve the above object, the present invention provides the following technical solution: a self-heating energy-saving photovoltaic distribution box, comprising a body and an upper closing door, wherein the upper closing door is installed on the upper front side of the body through a hinge, and a control panel is arranged on the front side of the upper closing door, a lower closing door is installed on the lower front side of the body through a hinge, and an electronic device is arranged in an upper groove inside the body; It also includes: a top plate is positioned and installed on the top of the fuselage, and the top plate is in a trapezoidal shape, and a collection seat is slidably installed through a groove on the inner side of the top of the top plate, and a drainage pipe is sealed and arranged in a groove on the outer end of the collection seat, and heat dissipation nets are arranged on both sides of the bottom of the fuselage, and the two heat dissipation nets are symmetrically arranged about the vertical center line of the fuselage, and the outer sides of the two heat dissipation nets correspond to sealing plates, and both sealing plates are in a disc shape; A driving motor is installed in a positioning manner inside the fuselage, and a negative pressure fan is installed at the output end of the driving motor. At the same time, electronic devices correspond to the top of the negative pressure fan. The grooves at both ends of the inner part of the top plate are penetrated by extension plates that are slidably installed, and the outer ends of the two extension plates extend to the outside of both ends of the top plate, and the width of the top plate is wider than the width of the fuselage. The two extension plates are symmetrically arranged about the vertical center line of the top plate.

[0005] Preferably, extrusion rods are rotatably mounted on both ends of the bottom of the collecting seat via a movable shaft, and both extrusion rods are inclined, and the bottom ends of the two extrusion rods are connected to extension plates via a movable shaft.

[0006] Preferably, tension springs are provided in grooves at both ends of the top plate, and the two tension springs have the same structure, and the outer ends of the two tension springs are connected to extension plates.

[0007] Preferably, the bottom ends of the two extension plates are connected to the first pull ropes, and the bottom ends of the two first pull ropes are wrapped and connected to the rotating shafts, and the two rotating shafts are rotatably installed inside the two positioning seats through second torsion springs, and the two positioning seats are positioned and installed on both sides of the fuselage through screws.

[0008] Preferably, rotating gears are installed through the outer sides of the two rotating shafts, and the outer sides of the two rotating gears are connected to movable racks through rack meshing. The two movable racks are installed through sliding inside the two positioning seats, and the bottom ends of the two movable racks are connected to sealing plates.

[0009] Preferably, two telescopic rods are positioned and installed at both ends of the bottom of the fuselage, and the top ends of the two telescopic rods are connected to a movable plate through a return spring, the outer ends of the two movable plates are positioned and installed with cleaning brush plates, and the outer sides of the two cleaning brush plates are fitted with a heat dissipation net.

[0010] Preferably, the output end of the driving motor is connected to two transmission components, and the outer ends of the two transmission components are connected to rotating rods, and the two rotating rods are rotatably mounted at both ends of the interior of the fuselage.

[0011] Preferably, the bottom ends of the two rotating rods are meshedly connected to the output ends of the eccentric wheels through a bevel gear set, and the two eccentric wheels are symmetrically mounted at the two ends of the interior of the fuselage, and the bottoms of the two eccentric wheels correspond to movable plates.

[0012] Preferably, a dust box is positioned and installed on the inner side of the bottom of the fuselage, and dust pans are sealed and connected to both sides of the dust box through hoses, and the two dust pans are rotatably installed on both sides of the bottom of the fuselage through a first torsion spring.

[0013] Preferably, the bottom ends of the two movable plates are connected to second pull ropes, and the bottom ends of the two second pull ropes are connected to dust suction plates.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A cleaning brush plate is provided, and telescopic rods are positioned and installed at both ends of the bottom of the fuselage, and then a movable plate is connected to the top of the two telescopic rods through a reset spring, and a cleaning brush plate is provided at the outer end of the two movable plates. When the dust and impurities adhering to the two heat dissipation nets need to be cleaned in the later stage, only the two movable plates need to be squeezed to drive the two cleaning brush plates to move and clean the dust and impurities adhering to the two heat dissipation nets, so as to avoid the dust and impurities adhering to the two heat dissipation nets and affecting the later heat dissipation, thereby improving the heat dissipation efficiency of the photovoltaic distribution box; Furthermore, a driving motor is installed inside the fuselage, and a negative pressure fan is connected to the output end of the driving motor. When the two temperature sensors detect that the temperature inside the fuselage is too high, the driving motor is driven by the central processing module to drive the negative pressure fan to rotate. At this time, the rotating negative pressure fan will absorb the heat generated by the electronic device to the inner side of the bottom of the fuselage, and then discharge it to the outer side of the bottom of the fuselage through the two heat dissipation nets, which is more practical. Furthermore, by connecting a rotating rod to the output end of the driving motor through two transmission components, and then meshing the output ends of the two eccentric wheels at the bottom of the two rotating rods through a bevel gear set, the two eccentric wheels can be driven to rotate while the driving motor rotates. Because there are two movable plates at the bottom of the two eccentric wheels, the two movable plates can be driven to drive the two cleaning brush plates to automatically clean the dust and impurities adhered to the two heat dissipation nets while the two eccentric wheels rotate, so that the heat accumulated on the inner side of the bottom of the fuselage can be automatically discharged to the outside thereof later; An extension plate is provided, and an extension plate is installed by sliding through the grooves at both ends of the inner part of the top plate, and then a collection seat is installed by sliding through the grooves on the inner side of the top plate, so that the fuselage can be conveniently powered in rainy and snowy weather, and the rain and snow collected from the outside can be collected through the collection seat. At this time, the collected rain and snow will drive the collection seat to be squeezed and dropped inside the top plate by its own gravity, and the extrusion rods connected to the movable shafts at both ends of the bottom of the collection seat will squeeze the two extension plates at the same time and automatically extend to the outside of the two ends of the top plate, and then the protection area of ​​the top plate can be expanded by the two extended extension plates, so that the fuselage can be better protected and used, thereby improving the safety of the photovoltaic distribution box; A sealing plate is provided, and the sealing plates are slidably installed by slots on both sides of the fuselage, and then a movable frame is connected to the top of the two sealing plates. When the two extension plates are extended to the outside of the two ends of the top plate, the two extension plates will simultaneously drive the two first pull ropes to drive the two rotating shafts to rotate. At this time, the two rotating rotating shafts will simultaneously drive the two rotating gears through the two racks to simultaneously drive the sealing plates connected to the bottom ends of the two movable frames to descend, so that the two sealing plates can seal the two heat dissipation nets, thereby preventing rainwater from seeping into the interior of the fuselage due to rain and snow in the outside world in the later stage of the two heat dissipation nets, thereby improving the sealing performance of the photovoltaic distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the partial main cross-section structure of the fuselage of the present invention; Figure 3 It is a schematic diagram of the partial main cross-section structure of the heat dissipation net and the cleaning brush plate of the present invention; Figure 4 For the present invention Figure 3The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating rod and the eccentric wheel of the present invention from a side view; Figure 6 It is a schematic diagram of the three-dimensional structure of the top plate and the extension plate of the present invention from a side view; Figure 7 This is a schematic diagram of the main cross-sectional structure of the top plate and the extension plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the collecting seat and the drain pipe of the present invention from a side view; Fig. 9 It is a schematic diagram of the side section structure of the photovoltaic distribution box of the present invention; Fig.10 It is a schematic diagram of a partial side section structure of the movable frame and the sealing plate after the movable frame and the sealing plate of the present invention are moved; Fig.11 It is a schematic diagram of the three-dimensional structure of the movable frame and the sealing plate after movement of the present invention.

[0016] In the figure: 1. body; 2. upper closing door; 3. lower closing door; 4. control panel; 5. top plate; 6. collecting seat; 7. extension plate; 8. heat dissipation net; 9. first pull rope; 10. rotating shaft; 11. positioning seat; 12. moving frame; 13. sealing plate; 14. electronic device; 15. driving motor; 16. negative pressure fan; 17. transmission assembly; 18. rotating rod; 19. eccentric wheel; 20. moving plate; 21. cleaning brush plate; 22. telescopic rod; 23. second pull rope; 24. dust suction disc; 25. dust suction box; 26. first torsion spring; 27. bevel gear set; 28. extrusion rod; 29. ​​tension spring; 30. drain pipe; 31. second torsion spring; 32. rotating gear; 33. rack; 34. reset spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention provides the following technical solutions: Embodiment 1, in order to solve the problem that when the existing photovoltaic distribution box is used in rainy and snowy weather, the heat dissipation net 8 causes external rainwater to penetrate into the interior of the fuselage 1, and no sealing mechanism is provided to prevent water seepage of the photovoltaic distribution box used in rainy and snowy weather, which may cause the later leaked rainwater to cause a short circuit to the electronic components 14 inside the photovoltaic distribution box, the following embodiment is disclosed: The fuselage 1 and the upper closing door 2, wherein the upper closing door 2 is installed on the upper front side of the fuselage 1 through hinges, and a control panel 4 is arranged on the front side of the upper closing door 2, and a lower closing door 3 is installed on the lower front side of the fuselage 1 through hinges, and an electronic device 14 is arranged in a slot on the upper part of the fuselage 1; The device also includes: a top plate 5 is positioned and installed on the top of the fuselage 1, and the top plate 5 is in a trapezoidal shape, and a collection seat 6 is slidably installed through a groove on the inner side of the top of the top plate 5, and a drainage pipe 30 is sealed and arranged in a groove on the outer end of the collection seat 6, and heat dissipation nets 8 are provided on both sides of the bottom of the fuselage 1, and the two heat dissipation nets 8 are symmetrically arranged about the vertical center line of the fuselage 1, and the outer sides of the two heat dissipation nets 8 are correspondingly provided with sealing plates 13, and the two sealing plates 13 are both in a disc shape; A driving motor 15 is installed inside the fuselage 1, and a negative pressure fan 16 is installed at the output end of the driving motor 15. At the same time, an electronic device 14 corresponds to the top of the negative pressure fan 16. The grooves at both ends of the inner part of the top plate 5 are penetrated by extension plates 7 for sliding installation, and the outer ends of the two extension plates 7 extend to the outside of the two ends of the top plate 5, and the width of the top plate 5 is wider than the width of the fuselage 1. The two extension plates 7 are symmetrically arranged about the vertical center line of the top plate 5.

[0019] Extrusion rods 28 are rotatably installed at the two ends of the bottom of the collecting seat 6 through a movable shaft, and the two extrusion rods 28 are both inclined, and the bottom ends of the two extrusion rods 28 are connected to an extension plate 7 through a movable shaft, and tension springs 29 are grooved at both ends of the inside of the top plate 5, and the two tension springs 29 have the same structure, and the outer ends of the two tension springs 29 are connected to the extension plate 7.

[0020] The bottom ends of the two extension plates 7 are connected to the first pull ropes 9, and the bottom ends of the two first pull ropes 9 are wound and connected with the rotating shafts 10, and the two rotating shafts 10 are rotatably installed inside the two positioning seats 11 through the second torsion springs 31, and the two positioning seats 11 are positioned and installed on both sides of the fuselage 1 through screws.

[0021] A rotating gear 32 is installed on the outer side of the two rotating shafts 10, and the outer sides of the two rotating gears 32 are meshed with a moving frame 12 through a rack 33. The two moving frames 12 are both installed in a sliding manner inside the two positioning seats 11, and the bottom ends of the two moving frames 12 are connected to a sealing plate 13.

[0022] like Figure 1-Figure 11 As shown, when the photovoltaic distribution box is used in rainy and snowy weather, the collecting seat 6 will collect rainwater from the outside. At this time, the collecting seat 6 after collecting the rainwater will be lowered on the top of the top plate 5 by the gravity of the rainwater itself, and then the collecting seat 6 will drive the two squeezing rods 28 to squeeze the two extension plates 7 to extend to the outside of the two ends of the top plate 5 through the movable shaft, so as to expand the protection area of ​​the top plate 5 and improve the protection effect of the top plate 5; When the two extension plates 7 extend to the outer sides of the two ends of the collecting seat 6, the first pull ropes 9 connected to the bottom ends of the two extension plates 7 will pull the two rotating shafts 10 to rotate at the same time, and the rotating gears 32 installed through the outer ends of the two rotating shafts 10 will simultaneously drive the sealing plates 13 connected to the bottom ends of the two moving frames 12 to descend through the two racks 33, and then the two sealing plates 13 can seal the two heat dissipation nets 8 to prevent rain and snow from the outside from penetrating into the interior of the fuselage 1 and affecting the normal use of the photovoltaic distribution box in the later stage; Then, the rainwater collected in the collecting seat 6 is manually discharged to the outside of the collecting seat 6 through the drain pipe 30. At this time, the two tension springs 29 will use their own elastic force to pull the two extension plates 7 to automatically shrink and move to the two inner ends of the top plate 5. Then, the two second torsion springs 31 will use their own elastic force to elastically reset the positions of the two rotating rear shafts 10, so as to drive the sealing plate 13 connected to the bottom end of the moving frame 12 to move up through the rotating gear 32, so that the two heat dissipation nets 8 can stably dissipate the heat accumulated inside the fuselage 1, which is more practical.

[0023] Embodiment 2 is different from Embodiment 1 in that the heat generated by the electronic device 14 can be pumped to the bottom inner side of the fuselage 1 by the negative pressure fan 16, and then the heat is discharged to the outside of the fuselage 1 through the two heat dissipation nets 8. At the same time, the dust and impurities adhered to the two heat dissipation nets 8 can be cleaned and removed reciprocally, and the practicality is better disclosed: Two telescopic rods 22 are positioned and installed at both ends of the bottom of the fuselage 1, and the top ends of the two telescopic rods 22 are connected to the moving plate 20 through the return spring 34. The outer ends of the two moving plates 20 are positioned and installed with cleaning brush plates 21, and the outer sides of the two cleaning brush plates 21 are fitted with a heat dissipation net 8. The output end of the drive motor 15 is connected to two transmission components 17, and the outer ends of the two transmission components 17 are connected to rotating rods 18. At the same time, the two rotating rods 18 are rotatably installed at the two ends inside the fuselage 1.

[0024] The bottom ends of the two rotating rods 18 are meshedly connected to the output ends of the eccentric wheels 19 through the bevel gear set 27, and the two eccentric wheels 19 are symmetrically mounted at the two ends of the interior of the fuselage 1, and the bottoms of the two eccentric wheels 19 are correspondingly provided with movable plates 20.

[0025] like Figure 1-Figure 5As shown, when the two temperature sensors arranged inside the fuselage 1 detect that the heat inside the fuselage 1 is high, the two temperature sensors will start the driving motor 15 through the central processing module to drive the negative pressure fan 16 to rotate. At this time, the rotating negative pressure fan 16 will pump the heat generated by the electronic device 14 to the bottom inner side of the fuselage 1 by negative pressure, and then the heat can be discharged to the outside of the bottom of the fuselage 1 through the two heat dissipation nets 8, so as to avoid the heat accumulation on the top inner side of the fuselage 1 and cause the electronic device 14 to short-circuit; When the driving motor 15 rotates, the two transmission components 17 connected to its output end will drive the two rotating rods 18 to rotate at the same time. Because the bottom ends of the two rotating rods 18 are meshedly connected to the output ends of the two eccentric wheels 19 through the bevel gear set 27, the two eccentric wheels 19 can be driven to lower the two movable plates 20 while the two rotating rods 18 rotate. At this time, the two movable plates 20 will drive the cleaning brush plate 21 to automatically reciprocate and lift the dust and impurities adhered to the two heat dissipation nets 8 through the two telescopic rods 22 and the two reset springs 34 to clean the dust and impurities adhered to the two heat dissipation nets 8, which can facilitate the self-heating of the photovoltaic distribution box to avoid dust and impurities adhering to the two heat dissipation nets 8 and affecting the stable heat dissipation of the photovoltaic distribution box in the later stage, and the operation is more time-saving and labor-saving.

[0026] Embodiment 3 is different from Embodiment 2 in that the dust and impurities cleaned from the bottom inner side of the fuselage 1 can be collected and processed by swinging two swinging dust suction discs 24, so as to avoid the accumulation of dust and impurities on the bottom inner side of the fuselage 1 and affecting the normal use in the later stage. The following is disclosed: A dust box 25 is positioned and installed on the inner side of the bottom of the fuselage 1, and dust pans 24 are sealed and connected to both sides of the dust box 25 through hoses, and the two dust pans 24 are rotatably installed on both sides of the bottom of the fuselage 1 through first torsion springs 26, and the bottom ends of the two movable plates 20 are connected to second pull ropes 23, and the bottom ends of the two second pull ropes 23 are connected to the dust pans 24.

[0027] like Figure 1-Figure 4 As shown, when the two movable plates 20 drive the two cleaning brush plates 21 to move back and forth to clean and scrape the two heat dissipation nets 8, the dust box 25 is started to drive the two dust discs 24 to collect and absorb the dust and impurities cleaned on the inner side of the bottom of the fuselage 1, and then the two second pull ropes 23 will rebound, and then the two first torsion springs 26 will drive the two dust discs 24 to flip and swing their positions through their own elastic force, and the two movable plates 20 can drive the two dust discs 24 to swing and flip back and forth while the two movable plates 20 move back and forth, thereby expanding the dust collection range of the two dust discs 24, avoiding the accumulation of cleaned dust and impurities on the inner side of the bottom of the fuselage 1 and affecting the normal use of the photovoltaic distribution box in the later stage, and having better practicality, thereby completing a series of tasks.

[0028] 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 protection scope of the present invention.

Claims

1. A self-heating energy-saving photovoltaic distribution box, comprising a body (1) and an upper closing door (2), wherein the upper closing door (2) is mounted on the upper front side of the body (1) via hinges, and a control panel (4) is arranged on the front side of the upper closing door (2), a lower closing door (3) is mounted on the lower front side of the body (1) via hinges, and an electronic device (14) is arranged in a groove on the upper interior of the body (1); It is characterized in that Also includes: A top plate (5) is positioned and installed on the top of the fuselage (1), and the top plate (5) is in a trapezoidal shape. A collection seat (6) is slidably installed through a groove on the inner side of the top of the top plate (5), and a drainage pipe (30) is sealed and installed on the outer end of the collection seat (6). The bottom of the body (1) is provided with heat dissipation nets (8), and the two heat dissipation nets (8) are symmetrically arranged about the vertical center line of the body (1), and the outer sides of the two heat dissipation nets (8) are correspondingly provided with sealing plates (13), and the two sealing plates (13) are both in the shape of a disc; A driving motor (15) is positioned and installed inside the fuselage (1), and a negative pressure fan (16) is installed at the output end of the driving motor (15), and an electronic device (14) is correspondingly provided at the top of the negative pressure fan (16); The top plate (5) has slots at both ends thereof through which extension plates (7) are slidably mounted, and the outer ends of the two extension plates (7) extend through and extend to the outer sides of both ends of the top plate (5), and the width of the top plate (5) is wider than the width of the fuselage (1), and the two extension plates (7) are symmetrically arranged about the vertical center line of the top plate (5).

2. A self-heating energy-saving photovoltaic distribution box according to claim 1, characterized in that: Extrusion rods (28) are rotatably mounted on both ends of the bottom of the collecting seat (6) via movable shafts, and both extrusion rods (28) are inclined, and the bottom ends of the two extrusion rods (28) are connected to extension plates (7) via movable shafts.

3. A self-heating energy-saving photovoltaic distribution box according to claim 2, characterized in that: Tension springs (29) are provided in grooves at both ends of the interior of the top plate (5), and the two tension springs (29) have the same structure, and the outer ends of the two tension springs (29) are connected to extension plates (7).

4. A self-heating energy-saving photovoltaic distribution box according to claim 3, characterized in that: The bottom ends of the two extension plates (7) are connected to first pull ropes (9), and the bottom ends of the two first pull ropes (9) are wound around and connected to rotating shafts (10), and the two rotating shafts (10) are rotatably mounted inside two positioning seats (11) through second torsion springs (31), and the two positioning seats (11) are positioned and mounted on both sides of the fuselage (1) through screws.

5. A self-heating energy-saving photovoltaic distribution box according to claim 4, characterized in that: A rotating gear (32) is installed through the outer sides of the two rotating shafts (10), and the outer sides of the two rotating gears (32) are meshedly connected to a moving frame (12) through a rack (33). The two moving frames (12) are both installed through and slide inside the two positioning seats (11), and the bottom ends of the two moving frames (12) are connected to a sealing plate (13).

6. A self-heating energy-saving photovoltaic distribution box according to claim 1, characterized in that: Two telescopic rods (22) are positioned and installed at both ends of the bottom of the fuselage (1), and the top ends of the two telescopic rods (22) are connected to the movable plate (20) via a return spring (34). Cleaning brush plates (21) are positioned and installed at the outer ends of the two movable plates (20), and the outer sides of the two cleaning brush plates (21) are fitted with a heat dissipation net (8).

7. A self-heating energy-saving photovoltaic distribution box according to claim 1, characterized in that: The output end of the driving motor (15) is connected to two transmission components (17), and the outer ends of the two transmission components (17) are connected to rotating rods (18), and the two rotating rods (18) are rotatably mounted at the two ends of the interior of the fuselage (1).

8. A self-heating energy-saving photovoltaic distribution box according to claim 7, characterized in that: The bottom ends of the two rotating rods (18) are meshedly connected to the output ends of the eccentric wheels (19) through a bevel gear set (27), and the two eccentric wheels (19) are symmetrically mounted at the two ends of the interior of the machine body (1), and the bottoms of the two eccentric wheels (19) are correspondingly provided with movable plates (20).

9. A self-heating energy-saving photovoltaic distribution box according to claim 1, characterized in that: A dust box (25) is positioned and installed on the inner side of the bottom of the machine body (1), and dust pans (24) are sealed and connected to both sides of the dust box (25) via hoses, and the two dust pans (24) are rotatably installed on both sides of the bottom of the machine body (1) via first torsion springs (26).

10. A self-heating energy-saving photovoltaic distribution box according to claim 8, characterized in that: The bottom ends of the two movable plates (20) are connected to second pull ropes (23), and the bottom ends of the two second pull ropes (23) are connected to dust suction plates (24).

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