A distributed photovoltaic grid-connected box with dust-proof function

Abstract

The present invention discloses a distributed photovoltaic grid-connected box with a dustproof function, the photovoltaic grid-connected box comprising a box cover, a box body, a feedback mechanism, a drainage mechanism, a cooling mechanism, a rain cap mechanism and an electrical assembly, the box body comprising an inner shell and an outer shell, the outer shell being provided with a water pipe hole, the box cover and the outer shell being hinged, the feedback mechanism comprising a servo cylinder, the feedback mechanism being fixedly connected to the inner shell, the outer shell and the drainage mechanism, the drainage mechanism being in contact with the inner shell and the outer shell, the cooling mechanism comprising a circulation pipe being fixedly connected to the water pipe hole, the drainage mechanism being slidably connected to the cooling mechanism, the rain cap mechanism being fixedly connected to the inner shell, the outer shell and the drainage mechanism, and the servo cylinder being connected to the electrical assembly via an electrical signal; the present invention relates to the technical field of photovoltaic grid-connected boxes, and on the basis of protecting electrical components, the present invention can switch working modes according to weather and electrical heating conditions, reasonably ventilate the electrical appliances, independently seal to prevent dust from entering, and make full use of rainwater for self-cleaning and electrical heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic grid-connected boxes, in particular to a distributed photovoltaic grid-connected box with a dustproof function. Background Art

[0002] Distributed photovoltaics (PV) refers to decentralized, small-scale photovoltaic power generation systems, such as solar panels installed on home or factory rooftops. The accompanying distributed PV grid-connected enclosure is a key device that integrates power conversion, protection, monitoring, and communication functions. Its role is to ensure the safe and efficient connection of the PV system to the grid, while strictly adhering to relevant standards and regulations.

[0003] In existing distributed photovoltaic systems, many functions rely on core components. External enclosures are often only required to be corrosion-resistant and age-resistant, with structural design often overlooked. However, optimizing the enclosure to provide good ventilation and heat dissipation for the core electronics within can effectively extend the lifespan of core electronic components. Furthermore, dust protection must be prioritized in the design of the enclosure to prevent dust from entering the enclosure and potentially causing poor contact or short circuits in core electronic components, which could pose a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to provide a distributed photovoltaic grid-connected box with a dustproof function to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A distributed photovoltaic grid-connected box with a dustproof function includes a box cover, a box body, a feedback mechanism, a drainage mechanism, a cooling mechanism, a rain cap mechanism and an electrical assembly. The box body includes an inner shell and an outer shell, the outer shell is provided with a water pipe hole, the box cover is hinged to the outer shell, the feedback mechanism includes a servo cylinder, the feedback mechanism is fixedly connected to the inner shell, the outer shell and the drainage mechanism, the drainage mechanism is in contact with the inner shell and the outer shell, the cooling mechanism includes a circulation pipe, the circulation pipe is fixedly connected to the water pipe hole, the drainage mechanism is slidably connected to the cooling mechanism, the rain cap mechanism is fixedly connected to the inner shell, the outer shell and the drainage mechanism, and the servo cylinder is connected to the electrical assembly through an electrical signal.

[0006] The present invention is a grid-connected box for protecting core electrical components. It is mainly arranged in a circuit system and is used to connect the distributed power to the public power grid. Its main function is to protect the electrical assembly in the box. In the present invention, the inner shell and the outer shell of the box are designed to be independent, so that the electrical assembly is protected in the inner shell. The present invention can independently disconnect the inner shell and the outer shell to switch the sealing mode to prevent dust from entering the electrical assembly and causing poor contact. The liquid level sensor detects the amount of rain, the servo cylinder identifies the heating condition of the electrical assembly, and the feedback mechanism adjusts the drainage mechanism and the rain cap according to the different electrical signals. Mechanism, on sunny days, the inner shell and the outer shell are connected to switch the ventilation mode, and the electrical assembly is ventilated to prevent overheating. On rainy days with little precipitation, it can be based on the heating situation of the electrical assembly. When the electrical assembly is not overheated, it switches to a small-displacement drainage mode to discharge rainwater from the side wall of the outer shell and clean dust at the same time. When the electrical assembly is overheated, it switches to a cooling mode to collect rainwater and enter the cooling mechanism to exchange heat and cool the inner shell. On rainy days with heavy precipitation, the electrical assembly does not overheat and switches to a sealing mode. When the electrical assembly is overheated and requires water cooling, it switches to a large-displacement drainage mode, and rainwater enters the inner and outer shells for heat exchange and is discharged.

[0007] Furthermore, the box body also includes a waterproof joint, the inner shell and the outer shell and the waterproof joint are all fixedly connected, the inner shell is provided with an inward-inclined hole, and the outer shell is also provided with an outward-inclined hole and a drainage groove, and there are several groups of inward-inclined holes and outward-inclined holes, and the several groups of inward-inclined holes and outward-inclined holes are evenly distributed in a rectangular array. The feedback mechanism also includes a partition, and there are two groups of drainage grooves. The two groups of drainage grooves are arranged at the bottom of both sides of the outer shell, and the drainage groove is arranged above the partition. The partition is fixedly connected to the inner shell and the outer shell, and the servo cylinder is fixedly connected to the inner shell.

[0008] The electrical assembly circuit installed in the box is connected through the waterproof connector at the bottom. On sunny days, the feedback mechanism adjusts the drainage mechanism according to the electrical signal. The drainage mechanism connects the inward-inclined hole and the outward-inclined hole to switch the ventilation mode. The electrical assembly is ventilated to prevent overheating. On rainy days with heavy precipitation, when the electrical assembly overheats and needs to be cooled, the large-displacement drainage mode is switched. The rainwater enters the inner shell and the outer shell, falls on the partition for heat exchange, and then flows out through the drainage groove.

[0009] Furthermore, the feedback mechanism also includes a connecting rod, an assembly plate and a liquid level sensor. A through hole is provided on the partition, and the through hole is slidingly connected to the output end of the servo cylinder and the connecting rod. The assembly plate is fixedly connected to the output end of the servo cylinder and the connecting rod. The servo cylinder is connected to the liquid level sensor through an electrical signal. There are two groups of drainage mechanisms, and the two groups of drainage mechanisms are arranged on both sides of the inner shell. The drainage mechanism includes a frame and a liquid retaining frame. The frame is fixedly connected to the output end of the servo cylinder and the connecting rod. The liquid retaining frame is fixedly connected to the partition. There are several groups of liquid retaining frames, and the several groups of liquid retaining frames are linearly evenly distributed along the partition.

[0010] The amount of precipitation on rainy days is identified by the liquid level sensor installed on the partition. The liquid level sensor converts the precipitation into an electrical signal and sends it to the servo cylinder. The temperature sensor is integrated in the electrical assembly. When the electrical assembly overheats, it sends an electrical signal to the servo cylinder. According to the electrical signal of the precipitation and the heating condition of the electrical assembly, the displacement of the servo cylinder output end is adjusted. The servo cylinder output end is connected to the connecting rod through the assembly plate. The servo cylinder output end pushes the two side frames to slide between the inner shell and the outer shell to switch the working mode.

[0011] Furthermore, the drainage mechanism also includes side diverters and main diverters. The side diverters and the main diverters are each provided with several groups, and several groups of side diverters are linearly evenly distributed along the edge of the frame, and several groups of main diverters are evenly distributed along the rectangular array of the side wall of the inner shell. The side diverters and the main diverter are fixedly connected to the frame, and the liquid retaining frame is provided with protrusions and through grooves. The side diverters and the main diverter are in contact with the inner shell, the outer shell, and the protrusions. There are several groups of protrusions and through grooves, and several groups of protrusions and through grooves are linearly evenly distributed along the liquid retaining frame. The rain hat mechanism includes an inner umbrella, and the inner umbrella is fixedly connected to the frame.

[0012] The servo cylinder output end is used to push the two side frames to slide between the inner shell and the outer shell to switch the working mode. Several side diverter pieces and the main diverter piece are evenly distributed in the frame corresponding to several inward-inclined holes and outward-inclined holes. When sealing, the side diverter piece and the main diverter piece body are in contact with the inward-inclined holes and outward-inclined holes, and the inward-inclined holes and the outward-inclined holes are connected through the side diverter piece and the main diverter piece body. When the electrical assembly overheats and needs to be cooled down due to heavy rainfall on rainy days, the servo cylinder output end pushes the frame so that the protrusion no longer seals the side diverter piece and the main diverter piece, and the rainwater falls on the partition through the through groove for heat exchange and is discharged through the drainage trough.

[0013] Furthermore, the side diverter is provided with an oblique through pipe, a turning pipe, a vertical groove and a side hole. The oblique through pipe is provided below the turning pipe. There are two groups of vertical grooves, and the two groups of vertical grooves are provided on both sides of the turning pipe. The side holes are connected with the vertical groove on the side away from the main diverter. The side diverter and the main diverter have the same virtual characteristics except for the side holes. The cooling mechanism of the main diverter also includes a baffle, which is slidably connected to the side diverter.

[0014] On sunny days, the output end of the servo cylinder pushes the frame, and the inclined through-tube connects the inward-inclined hole and the outward-inclined hole to switch the ventilation mode, and the electrical assembly is ventilated to prevent overheating. On rainy days with little precipitation, the electrical assembly can be ventilated to prevent overheating according to the heating situation of the electrical assembly. When the electrical assembly is not overheated, the small-displacement drainage mode is switched, and the turning pipe contacts the outward-inclined hole. Rainwater enters between the inner shell and the outer shell, and most of it is discharged through the turning pipe into the outward-inclined hole. At the same time, the dust in the outward-inclined hole is cleaned, and the vertical groove contacts the protrusion seal. When the electrical assembly overheats, it switches to the large-displacement drainage mode, and the side diverter is connected to the main diverter body to block the inward-inclined hole and the outward-inclined hole. The protrusion no longer contacts the sealed vertical groove. The rainwater falls on the partition through the vertical groove and the through groove for heat exchange and is discharged through the drainage groove.

[0015] Furthermore, the cooling mechanism also includes a liquid collecting pipe, and there are two groups of baffles and liquid collecting pipes. The two groups of baffles and liquid collecting pipes are arranged on both sides of the circulation pipe. The baffle is provided with liquid collecting holes, and there are several groups of liquid collecting holes. The several groups of liquid collecting holes are linearly evenly distributed along the baffle, and the liquid collecting pipe is connected with the liquid collecting holes and the circulation pipe.

[0016] On rainy days with little precipitation, when the electrical assembly overheats, the cooling mode is switched. The servo cylinder pushes the side diverter to connect with the inward and outward inclined holes of the main diverter body partition. The protrusion contacts the sealed vertical groove, and rainwater enters between the inner shell and the outer shell. Part of it falls to the upper surface of the side diverter and is connected to the liquid collecting hole through the vertical groove on the side of the side diverter away from the main diverter. It is collected by the liquid collecting pipe and enters the circulation pipe and the back of the inner shell for heat exchange and cooling. Part of it is discharged through the drainage trough after heat exchange on the partition.

[0017] Furthermore, the rain hat mechanism also includes a cap cover, which is fixedly connected to the inner shell and the outer shell. The cap cover is provided with a rain leakage hole, and the inner umbrella is provided with a convex column and a grille. The rain leakage holes, convex columns and grilles are provided in several groups, and the several groups of rain leakage holes and convex columns are evenly distributed in an array, and the several groups of grilles are evenly distributed linearly along the inner umbrella. The cap cover is slidably connected to the inner umbrella.

[0018] In ventilation mode and sealing mode on sunny days, the servo cylinder pushes the frame, driving the inner umbrella to move towards the cap, and the convex column contacts the sealed rain leakage hole to prevent dust from entering the inner and outer shells through the rain leakage hole. In small-displacement drainage mode, large-displacement drainage mode and cooling mode on rainy days, the servo cylinder pulls the frame, driving the inner umbrella to move away from the cap, and the convex column no longer contacts the sealed rain leakage hole, and rainwater enters the inner and outer shells through the rain leakage hole.

[0019] As further shown, the photovoltaic grid-connected box has five working modes:

[0020] Sealing mode: The convex column contacts the rain leakage hole, and the liquid collection hole, inward-inclined hole, and outward-inclined hole all contact the side diverter body;

[0021] Ventilation mode: The convex column contacts the rain leakage hole, the liquid collecting hole contacts the side diverter body, the inward and outward inclined holes contact the inclined pipe, and the vertical groove contacts the convex block;

[0022] Small-displacement drainage mode: The convex column does not contact the rain leakage hole, the liquid collection hole and the inward-inclined hole are in contact with the side diverter body, the outward-inclined hole is in contact with the turning pipe, and the vertical groove is in contact with the convex block;

[0023] Large-displacement drainage mode: The convex column does not contact the rain leakage hole, the liquid collection hole, outward-inclined hole and inward-inclined hole are all in contact with the side diverter body, and the vertical groove does not contact the convex block;

[0024] Cooling mode: The convex column does not contact the rain leakage hole, the inward-inclined hole and the outward-inclined hole are in contact with the side diverter body, the vertical groove is in contact with the convex block, the liquid collecting hole is in contact with the side hole, and the vertical groove is in contact with the convex block.

[0025] The sealing mode working condition is that the output end of the servo cylinder pushes the frame, at this time the side diverter and the bottom of the main diverter body contact the liquid collecting hole, the inward-inclined hole and the outward-inclined hole, the inner umbrella is close to the cap, the convex column contacts the sealed rain leakage hole, the inner shell and the outer shell are separated to prevent dust from entering the inner shell from the inward-inclined hole, the outward-inclined hole and the rain leakage hole; the ventilation mode working condition is that the output end of the servo cylinder pulls the frame toward the direction close to the partition, the inclined through-pipe connects the inward-inclined hole and the outward-inclined hole to switch the ventilation mode, and the electrical assembly is ventilated to prevent overheating; the small-displacement drainage mode working condition is that the output end of the servo cylinder pulls the frame to continue to move one position toward the partition, the convex column no longer contacts the sealed rain leakage hole, rainwater enters between the inner shell and the outer shell from the rain leakage hole, the turning pipe contacts the outward-inclined hole, and part of the rainwater passes into the outer shell through the turning pipe The inclined hole is discharged, and the dust in the outward inclined hole is cleaned at the same time. At this time, the vertical groove contacts the convex block for sealing; the working condition of the large-displacement drainage mode is that the frame continues to move one position toward the partition, the convex column does not contact the sealed leaking hole, the side diverter is connected to the inward inclined hole and the outward inclined hole of the main diverter body, the convex block no longer contacts the sealed vertical groove, the rainwater falls on the partition through the vertical groove and the through groove, and is discharged through the drainage groove after heat exchange; the working condition of the cooling mode is that the frame continues to move one position toward the partition, the convex column does not contact the sealed leaking hole, the rainwater enters the inner shell and the outer shell, part of it falls to the upper surface of the side diverter, and is connected to the liquid collecting hole through the vertical groove on the side of the side diverter away from the main diverter, and is collected by the liquid collecting pipe and enters the circulation pipe and the back of the inner shell for heat exchange and cooling, and part of it is discharged through the drainage groove after heat exchange on the partition.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a feedback mechanism, which identifies the amount of precipitation on rainy days through a liquid level sensor, and the liquid level sensor converts the amount of precipitation into an electrical signal and sends it to the servo cylinder. A temperature sensor is integrated in the electrical assembly, and the displacement of the servo cylinder output end is adjusted according to the electrical signal of the precipitation and the heating condition of the electrical assembly, and the two side frames are pushed to slide between the inner shell and the outer shell to switch the working mode; the present invention designs a drainage mechanism and a cooling mechanism, and provides five working modes through the cooperation of the two. The sealing mode working condition is that the side diverter contacts the liquid collection hole, the inward-inclined hole, and the outward-inclined hole at the bottom of the main diverter body, and the inner shell is separated from the outer shell to prevent dust from entering the inner shell from the inward-inclined hole, the outward-inclined hole, and the rain leakage hole, resulting in poor contact; on sunny days, it is in ventilation mode, the inclined through-pipe connects the inward-inclined hole and the outward-inclined hole, and the electrical assembly is ventilated and prevented from leaking. Prevent overheating; on rainy days with light rainfall, the device can switch to a small-displacement drainage mode based on the heating conditions of the electrical assembly. When the electrical assembly is not overheating, the device switches to a small-displacement drainage mode, allowing rainwater to enter the space between the inner and outer shells through the rain leak hole. The turning pipe contacts the outward-inclined hole, and some rainwater is discharged through the turning pipe into the outward-inclined hole while cleaning dust from the outward-inclined hole. When the electrical assembly is overheating, the device switches to a cooling mode, collecting rainwater and entering the cooling mechanism to exchange heat with the inner shell. On rainy days with heavy rainfall, the device switches to a sealing mode. When the electrical assembly is overheating and requires water cooling, the device switches to a large-displacement drainage mode, allowing rainwater to enter the space between the inner and outer shells and then be discharged. While protecting electrical components, the present invention can switch operating modes based on weather and electrical heating conditions, reasonably ventilating the electrical appliance. It can also be independently sealed to prevent dust from entering the appliance, making it highly intelligent. It has a wide range of applicability and fully utilizes rainwater for self-cleaning of heat dissipation holes and heat dissipation of the electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a partial cross-sectional view of the overall present invention;

[0029] Figure 3 Schematic diagram of the feedback mechanism structure of the present invention;

[0030] Figure 4 It is a structural diagram of the drainage mechanism of the present invention;

[0031] Figure 5 It is a partial cross-sectional view of the drainage mechanism of the present invention;

[0032] Figure 6 A partial cross-sectional view of a side diverter of the present invention;

[0033] Figure 7 for Figure 6 A magnified schematic diagram of a local area A;

[0034] Figure 8 It is a schematic structural diagram of the cooling mechanism of the present invention;

[0035] Figure 9 A partial cross-sectional view of the cooling mechanism of the present invention;

[0036] Figure 10 for Figure 9 A schematic diagram of a partial B enlargement;

[0037] Figure 11 It is a schematic diagram of the structure of the rain cap mechanism of the present invention.

[0038] In the figure: 1, box cover; 2, box body; 21, inner shell; 211, inward tilt hole; 22, outer shell; 221, outward tilt hole; 222, drainage groove; 223, water pipe hole; 23, waterproof joint; 3, feedback mechanism; 31, servo cylinder; 32, partition; 321, through hole; 33, connecting rod; 34, assembly plate; 35, liquid level sensor; 4, drainage mechanism; 41, frame; 42, liquid retaining frame; 421, Bump; 422, through groove; 43, side diverter; 431, oblique through pipe; 432, turning pipe; 433, vertical groove; 434, side hole; 44, main diverter; 5, cooling mechanism; 51, baffle; 511, liquid collecting hole; 52, liquid collecting pipe; 53, circulation pipe; 6, rain cap mechanism; 61, cap; 611, rain leak hole; 62, inner umbrella; 621, boss; 622, grille; 7, electrical assembly. DETAILED DESCRIPTION

[0039] 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 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 making creative efforts are within the scope of protection of the present invention.

[0040] like Figure 1 、 Figure 2 As shown, the present invention provides a technical solution for distributed photovoltaic grid-connected with dustproof function, including a box cover 1, a box body 2, a feedback mechanism 3, a drainage mechanism 4, a cooling mechanism 5, a rain cap mechanism 6 and an electrical assembly 7. The box body 2 includes an inner shell 21 and an outer shell 22. The outer shell 22 is provided with a water pipe hole 223. The box cover 1 is hinged to the outer shell 22. The feedback mechanism 3 includes a servo cylinder 31. The feedback mechanism 3 is fixedly connected to the inner shell 21, the outer shell 22 and the drainage mechanism 4. The drainage mechanism 4 is in contact with the inner shell 21 and the outer shell 22. The cooling mechanism 5 includes a circulation pipe 53. The circulation pipe 53 is fixedly connected to the water pipe hole 223. The drainage mechanism 4 is slidably connected to the cooling mechanism 5. The rain cap mechanism 6 is fixedly connected to the inner shell 21, the outer shell 22 and the drainage mechanism 4. The servo cylinder 31 is connected to the electrical assembly 7 through an electrical signal.

[0041] The present invention is a grid-connected box for protecting core electrical components. It is mainly arranged in a circuit system and is used to connect the distributed power to the public power grid. Its main function is to protect the electrical assembly 7 in the box body 2. In the present invention, the inner shell 21 and the outer shell 22 of the box body 2 are independently designed, and the electrical assembly 7 is protected in the inner shell 21. The present invention can independently disconnect the inner shell 21 and the outer shell 22 to switch the sealing mode to prevent dust from entering the electrical assembly 7 and causing poor contact. The liquid level sensor 35 detects the amount of rain in the weather, the servo cylinder 31 identifies the heating condition of the electrical assembly 7, and the feedback mechanism 3 adjusts the drainage mechanism 4 and the rain according to the different electrical signals. Cap mechanism 6, on sunny days, the inner shell 21 and the outer shell 22 are connected to switch the ventilation mode, and the electrical assembly 7 is ventilated to prevent overheating. On rainy days with little precipitation, it can be based on the heating condition of the electrical assembly 7. When the electrical assembly 7 is not overheated, it switches to a small-displacement drainage mode to discharge rainwater from the side wall of the outer shell 22 and clean dust at the same time. When the electrical assembly 7 is overheated, it switches to a cooling mode to collect rainwater and enter the cooling mechanism 5 to exchange heat and cool the inner shell 21. On rainy days with heavy precipitation, the electrical assembly 7 is not overheated and switches to a sealing mode. When the electrical assembly 7 is overheated and needs water cooling, it switches to a large-displacement drainage mode, and rainwater enters the inner shell 21 and the outer shell 22 for heat exchange and then is discharged.

[0042] like Figure 2 、 Figure 3 As shown, the box body 2 also includes a waterproof joint 23, the inner shell 21 and the outer shell 22 and the waterproof joint 23 are all fixedly connected, the inner shell 21 is provided with an inward-inclined hole 211, and the outer shell 22 is also provided with an outward-inclined hole 221 and a drainage groove 222, the inward-inclined holes 211 and the outward-inclined holes 221 are each provided with several groups, and the several groups of inward-inclined holes 211 and the outward-inclined holes 221 are uniformly distributed in a rectangular array, the feedback mechanism 3 also includes a partition 32, and the drainage groove 222 is provided with two groups, the two groups of drainage grooves 222 are provided at the bottom of both sides of the outer shell 22, and the drainage groove 222 is provided above the partition 32, the partition 32 is fixedly connected to the inner shell 21 and the outer shell 22, and the servo cylinder 31 is fixedly connected to the inner shell 21.

[0043] The circuit of the electrical assembly 7 assembled in the box body 2 is connected through the waterproof joint 23 at the bottom. On sunny days, the feedback mechanism 3 adjusts the drainage mechanism 4 according to the electrical signal. The drainage mechanism 4 connects the inward-inclined hole 211 and the outward-inclined hole 221 to switch the ventilation mode. The electrical assembly 7 is ventilated to prevent overheating. On rainy days with heavy precipitation, when the electrical assembly 7 overheats and needs to be cooled, the large-displacement drainage mode is switched. Rainwater enters the inner shell 21 and the outer shell 22 and falls on the partition 32 for heat exchange and then flows out through the drainage groove 222.

[0044] like Figure 3 、 Figure 4As shown, the feedback mechanism 3 also includes a connecting rod 33, an assembly plate 34 and a liquid level sensor 35. A through hole 321 is provided on the partition 32. The through hole 321 is slidingly connected to the output end of the servo cylinder 31 and the connecting rod 33. The assembly plate 34 is fixedly connected to the output end of the servo cylinder 31 and the connecting rod 33. The servo cylinder 31 and the liquid level sensor 35 are connected through electrical signals. The drainage mechanism 4 is provided with two groups, and the two groups of drainage mechanisms 4 are provided on both sides of the inner shell 21. The drainage mechanism 4 includes a frame 41 and a liquid retaining frame 42. The frame 41 is fixedly connected to the output end of the servo cylinder 31 and the connecting rod 33. The liquid retaining frame 42 is fixedly connected to the partition 32. There are several groups of liquid retaining frames 42, and the several groups of liquid retaining frames 42 are linearly distributed along the partition 32.

[0045] The amount of precipitation on rainy days is identified by the liquid level sensor 35 installed on the partition 32. The liquid level sensor 35 converts the precipitation into an electrical signal and sends it to the servo cylinder 31. A temperature sensor is integrated in the electrical assembly 7. When the electrical assembly 7 is overheated, an electrical signal is sent to the servo cylinder 31. According to the electrical signal of the precipitation and the heating condition of the electrical assembly 7, the displacement of the output end of the servo cylinder 31 is adjusted. The output end of the servo cylinder 31 is connected to the connecting rod 33 through the assembly plate 34. The output end of the servo cylinder 31 pushes the two side frames 41 to slide between the inner shell 21 and the outer shell 22 to switch the working mode.

[0046] like Figure 4 、 Figure 5 、 Figure 11 As shown, the drainage mechanism 4 also includes side diverters 43 and main diverters 44. The side diverters 43 and the main diverters 44 are each provided with several groups. Several groups of side diverters 43 are linearly evenly distributed along the edge of the frame 41, and several groups of main diverters 44 are evenly distributed in a rectangular array along the side wall of the inner shell 21. The side diverters 43 and the main diverters 44 are fixedly connected to the frame 41. A protrusion 421 and a through groove 422 are provided on the liquid retaining frame 42. The side diverters 43 and the main diverter 44 are in contact with the inner shell 21, the outer shell 22 and the protrusion 421. Several groups of protrusions 421 and the through groove 422 are each provided with several groups. Several groups of protrusions 421 and the through groove 422 are linearly evenly distributed along the liquid retaining frame 42. The rain hat mechanism 6 includes an inner umbrella 62, and the inner umbrella 62 is fixedly connected to the frame 41.

[0047] The output end of the servo cylinder 31 pushes the two side frames 41 to slide between the inner shell 21 and the outer shell 22 to switch the working mode. A number of side diverter pieces 43 and the main diverter piece 44 are evenly distributed in the frame 41 corresponding to a number of inward-inclined holes 211 and outward-inclined holes 221. When sealing, the side diverter pieces 43 and the main diverter piece 44 body are in contact with the inward-inclined holes 211 and the outward-inclined holes 221. The inward-inclined holes 211 and the outward-inclined holes 221 are connected through the side diverter pieces 43 and the main diverter piece 44 body. When the electrical assembly 7 overheats and needs to be cooled down due to heavy rainfall on rainy days, the output end of the servo cylinder 31 pushes the frame 41 so that the protrusion 421 no longer seals the side diverter piece 43 and the main diverter piece 44. The rainwater falls on the partition 32 through the through groove 422 for heat exchange and is discharged through the drainage groove 222.

[0048] like Figure 6 、 Figure 7 As shown, the side diverter 43 is provided with an oblique pipe 431, a turning pipe 432, a vertical groove 433 and a side hole 434. The oblique pipe 431 is arranged below the turning pipe 432. There are two groups of vertical grooves 433. The two groups of vertical grooves 433 are arranged on both sides of the turning pipe 432. The side hole 434 is connected to the vertical groove 433 on the side away from the main diverter 44. The side diverter 43 and the main diverter 44 have the same virtual features except for the side hole 434. The cooling mechanism 5 of the main diverter 44 also includes a baffle 51, which is slidably connected to the side diverter 43.

[0049] On sunny days, the output end of the servo cylinder 31 pushes the frame 41, and the inclined through-tube 431 connects the inward-inclined hole 211 and the outward-inclined hole 221 to switch the ventilation mode, so that the electrical assembly 7 is ventilated to prevent overheating. On rainy days with little precipitation, the electrical assembly 7 can be ventilated to prevent overheating according to the heating condition of the electrical assembly 7. When the electrical assembly 7 is not overheated, the small-displacement drainage mode is switched, and the turning pipe 432 contacts the outward-inclined hole 221. Rainwater enters between the inner shell 21 and the outer shell 22, and most of it passes through the turning pipe 432 into the outward-inclined hole 221 for discharge, while cleaning the dust in the outward-inclined hole 221. At this time, the vertical groove 433 contacts the protrusion 421 for sealing. When the electrical assembly 7 overheats, the large-displacement drainage mode is switched, and the side diverter 43 is connected to the main body of the main diverter 44 to separate the inward-inclined hole 211 and the outward-inclined hole 221. The protrusion 421 no longer contacts the sealed vertical groove 433. The rainwater falls on the partition 32 through the vertical groove 433 and the through groove 422 for heat exchange and is discharged through the drainage groove 222.

[0050] like Figure 8 、 Figure 9 、 Figure 10 As shown, the cooling mechanism 5 also includes a liquid collecting pipe 52. There are two groups of baffles 51 and liquid collecting pipes 52. The two groups of baffles 51 and liquid collecting pipes 52 are arranged on both sides of the circulation pipe 53. The baffle 51 is provided with liquid collecting holes 511. There are several groups of liquid collecting holes 511. The several groups of liquid collecting holes 511 are linearly evenly distributed along the baffle 51. The liquid collecting pipe 52 is connected with the liquid collecting holes 511 and the circulation pipe 53.

[0051] On rainy days with little precipitation, when the electrical assembly 7 overheats, the cooling mode is switched, and the servo cylinder 31 pushes the side diverter 43 to connect with the inward-inclined hole 211 and the outward-inclined hole 221 of the main diverter 44 main body partition. The protrusion 421 contacts the sealed vertical groove 433, and rainwater enters between the inner shell 21 and the outer shell 22. Part of the rainwater falls to the upper surface of the side diverter 43 and connects to the liquid collecting hole 511 through the vertical groove 433 on the side of the side diverter 43 away from the main diverter 44. It is collected by the liquid collecting pipe 52 and enters the circulation pipe 53 to exchange heat with the back of the inner shell 21 for cooling. Part of the rainwater is discharged through the drainage groove 222 after heat exchange on the partition 32.

[0052] like Figure 11 As shown, the rain hat mechanism 6 also includes a cap 61, which is fixedly connected to the inner shell 21 and the outer shell 22. A rain leakage hole 611 is provided on the cap 61, and a convex column 621 and a grille 622 are provided on the inner umbrella 62. The rain leakage holes 611, the convex column 621 and the grille 622 are each provided in several groups, and several groups of rain leakage holes 611 and convex columns 621 are evenly distributed in an array, and several groups of grilles 622 are linearly evenly distributed along the inner umbrella 62. The cap 61 is slidably connected to the inner umbrella 62.

[0053] In the ventilation mode and sealing mode on sunny days, the servo cylinder 31 pushes the frame 41, driving the inner umbrella 62 to move toward the cap 61, and the boss 621 contacts the sealed rain leakage hole 611 to prevent dust from entering the inner shell 21 and the outer shell 22 through the rain leakage hole 611. In the small-displacement drainage mode, large-displacement drainage mode and cooling mode on rainy days, the servo cylinder 31 pulls the frame 41, driving the inner umbrella 62 to move away from the cap 61, and the boss 621 no longer contacts the sealed rain leakage hole 611, and rainwater enters the inner shell 21 and the outer shell 22 through the rain leakage hole 611.

[0054] like Figure 5 、 Figure 9 、 Figure 10 As shown, the photovoltaic grid-connected box has five working modes:

[0055] Sealing mode: The protruding column 621 contacts the rain leak hole 611, and the liquid collecting hole 511, the inward-inclined hole 211, and the outward-inclined hole 221 all contact the main body of the side diverter 43;

[0056] Ventilation mode: The protruding column 621 contacts the rain leak hole 611, the liquid collecting hole 511 contacts the main body of the side diverter 43, the inward-inclined hole 211 and the outward-inclined hole 221 both contact the inclined through-tube 431, and the vertical groove 433 contacts the protruding block 421;

[0057] Small-displacement drainage mode: The protruding column 621 does not contact the rain leak hole 611, the liquid collecting hole 511 and the inward-inclined hole 211 are in contact with the main body of the side diverter 43, the outward-inclined hole 221 is in contact with the turning pipe 432, and the vertical groove 433 is in contact with the protruding block 421;

[0058] Large-displacement drainage mode: The protrusion 621 does not contact the rain leak hole 611, the liquid collection hole 511, the outward-inclined hole 221, and the inward-inclined hole 211 are all in contact with the main body of the side diverter 43, and the vertical groove 433 does not contact the protrusion 421;

[0059] Cooling mode: the protruding column 621 does not contact the rain leaking hole 611 , the inwardly inclined hole 211 and the outwardly inclined hole 221 both contact the main body of the side diverter 43 , the vertical groove 433 contacts the convex block 421 , the liquid collecting hole 511 contacts the side hole 434 , and the vertical groove 433 contacts the convex block 421 .

[0060] The working condition of the sealing mode is that the output end of the servo cylinder 31 pushes the frame 41. At this time, the side diverter 43 and the bottom of the main diverter 44 body contact the liquid collection hole 511, the inward-inclined hole 211, and the outward-inclined hole 221. The inner umbrella 62 is close to the cap 61, and the protruding column 621 contacts the sealed leaking hole 611. The inner shell 21 and the outer shell 22 are separated to prevent dust from entering the inner shell 21 through the inward-inclined hole 211, the outward-inclined hole 221, and the leaking hole 611. The working condition of the ventilation mode is that the output end of the servo cylinder 31 pulls the frame 41 toward As it moves closer to the partition 32, the inclined pipe 431 connects the inward-inclined hole 211 and the outward-inclined hole 221 to switch the ventilation mode, and the electrical assembly 7 is ventilated to prevent overheating; in the small-displacement drainage mode, the output end of the servo cylinder 31 pulls the frame 41 to continue to move one position closer to the partition 32, and the protruding column 621 no longer contacts the sealed leaking hole 611. Rainwater enters between the inner shell 21 and the outer shell 22 from the leaking hole 611, and the turning pipe 432 contacts the outward-inclined hole 221. Part of the rainwater flows into the outer shell through the turning pipe 432. The inclined hole 221 is discharged, and the dust in the outward inclined hole 221 is cleaned at the same time. At this time, the vertical groove 433 contacts the protrusion 421 to seal; the large-displacement drainage mode working condition is that the frame 41 continues to move one position toward the partition 32, the protrusion 621 does not contact the sealed leaking hole 611, the side diverter 43 is connected to the main diverter 44 body to separate the inward inclined hole 211 and the outward inclined hole 221, the protrusion 421 no longer contacts the sealed vertical groove 433, and the rainwater falls on the partition 32 through the vertical groove 433 and the through groove 422 after heat exchange. The water is discharged from the water tank 222; the cooling mode working condition is that the frame 41 continues to move one position toward the partition 32, the protruding column 621 does not contact the sealed rain leakage hole 611, and the rainwater enters between the inner shell 21 and the outer shell 22. Part of it falls to the upper surface of the side diverter 43 and is connected to the liquid collecting hole 511 through the vertical groove 433 on the side of the side diverter 43 away from the main diverter 44. It is collected by the liquid collecting pipe 52 and enters the circulation pipe 53 to exchange heat with the back of the inner shell 21 for cooling. Part of it is discharged through the drainage tank 222 after heat exchange on the partition 32.

[0061] Working principle of the present invention: The electrical assembly 7 of the present invention is protected in the inner shell 21. The present invention can switch the sealing mode to prevent dust from entering the electrical assembly 7 and causing poor contact. The liquid level sensor 35 identifies the amount of precipitation on rainy days. The temperature sensor is integrated in the electrical assembly 7. According to the electrical signal of the precipitation and the heating condition of the electrical assembly 7, the displacement of the output end of the servo cylinder 31 is adjusted. The sealing mode working condition is that the output end of the servo cylinder 31 pushes the frame 41, the side diverter 43 and the bottom of the main diverter 44 body contact the liquid collection hole 511, the inwardly inclined hole 211, and the outwardly inclined hole 221, the inner umbrella 62 is close to the cap 61, and the convex column 621 contacts the sealed rain leakage hole 611. The inner shell 21 and the outer shell 22 are separated to prevent dust from entering the inner shell 21 from the inwardly inclined hole 211, the outwardly inclined hole 221, and the rain leakage hole 611. On sunny days, the output end of the servo cylinder 31 pulls the frame 41, and the inclined pipe 431 is connected to the inwardly inclined hole 211 , the outward-inclined hole 221 switches the ventilation mode, the electrical assembly 7 is ventilated to prevent overheating. On rainy days with little precipitation, the electrical assembly 7 can be switched to a small-displacement drainage mode according to the heating condition of the electrical assembly 7. When the electrical assembly 7 is not overheated, the small-displacement drainage mode is switched, and the output end of the servo cylinder 31 pulls the frame 41 to continue to move one position toward the direction of the partition 32. The protruding column 621 no longer contacts the sealed rain leakage hole 611, and rainwater enters the inner shell 21 and the outer shell 22 from the rain leakage hole 611. Most of it passes through the turning pipe 432 into the outward-inclined hole 221 for discharge, and at the same time, the dust in the outward-inclined hole 221 is cleaned. At this time, the vertical groove 433 contacts the protruding block 421 to seal and switch to the cooling mode, collecting rainwater into the cooling mechanism 5 to exchange heat and cool the inner shell 21. On rainy days with heavy precipitation, the electrical assembly 7 is not overheated and switches to the sealing mode. When the electrical assembly 7 is overheated and needs water cooling, it switches to a large-displacement drainage mode, and rainwater enters the inner shell 21 and the outer shell 22 for heat exchange and then is discharged.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A distributed photovoltaic grid-connected box with dust-proof function, characterized by: The photovoltaic grid-connected box comprises a box cover (1), a box body (2), a feedback mechanism (3), a drainage mechanism (4), a cooling mechanism (5), a rain cap mechanism (6) and an electrical assembly (7); the box body (2) comprises an inner shell (21) and an outer shell (22); a water pipe hole (223) is provided on the outer shell (22); the box cover (1) is hinged to the outer shell (22); the feedback mechanism (3) comprises a servo cylinder (31); the feedback mechanism (3) is connected to the inner shell (21), the outer shell (22), the drainage mechanism (4), the cooling mechanism (5), the rain cap mechanism (6) and the electrical assembly (7); The water mechanism (4) is fixedly connected, the drainage mechanism (4) is in contact with the inner shell (21) and the outer shell (22), the cooling mechanism (5) includes a circulation pipe (53), the circulation pipe (53) is fixedly connected to the water pipe hole (223), the drainage mechanism (4) is slidably connected to the cooling mechanism (5), the rain cap mechanism (6) is fixedly connected to the inner shell (21), the outer shell (22), and the drainage mechanism (4), and the servo cylinder (31) is connected to the electrical assembly (7) via an electrical signal. The feedback mechanism (3) further includes a partition (32); The feedback mechanism (3) further comprises a connecting rod (33), an assembly plate (34) and a liquid level sensor (35); a through hole (321) is provided on the partition (32); the through hole (321) is slidably connected to the output end of the servo cylinder (31) and the connecting rod (33); the assembly plate (34) is fixedly connected to the output end of the servo cylinder (31) and the connecting rod (33); the servo cylinder (31) is connected to the liquid level sensor (35) via an electrical signal; The drainage mechanism (4) is provided with two groups, and the two groups of the drainage mechanism (4) are provided on both sides of the inner shell (21). The drainage mechanism (4) includes a frame (41) and a liquid retaining frame (42). The frame (41) is fixedly connected to the output end of the servo cylinder (31) and the connecting rod (33). The liquid retaining frame (42) is fixedly connected to the partition (32). The liquid retaining frame (42) is provided with a plurality of groups, and the plurality of groups of the liquid retaining frames (42) are linearly evenly distributed along the partition (32).

2. The distributed photovoltaic grid-connected box with dust-proof function according to claim 1, characterized in that: The box body (2) further includes a waterproof joint (23), the inner shell (21) is fixedly connected to the outer shell (22) and the waterproof joint (23), the inner shell (21) is provided with an inward-inclined hole (211), and the outer shell (22) is also provided with an outward-inclined hole (221) and a drainage groove (222), the inward-inclined hole (211) and the outward-inclined hole (221) are provided in a plurality of groups, and the plurality of groups of the inward-inclined holes (211) and the outward-inclined holes (221) are uniformly distributed in a rectangular array, the drainage groove (222) is provided in two groups, and the two groups of the drainage grooves (222) are provided at the bottom of both sides of the outer shell (22), and the drainage grooves (222) are provided above the partition (32), the partition (32) is fixedly connected to the inner shell (21) and the outer shell (22), and the servo cylinder (31) is fixedly connected to the inner shell (21).

3. The distributed photovoltaic grid-connected box with dust-proof function according to claim 1, characterized in that: The drainage mechanism (4) further comprises a side diverter (43) and a main diverter (44), wherein the side diverter (43) and the main diverter (44) are provided in a plurality of groups, wherein the plurality of groups of the side diverter (43) are linearly evenly distributed along the edge of the frame (41), and the plurality of groups of the main diverter (44) are evenly distributed in a rectangular array along the side wall of the inner shell (21), wherein the side diverter (43) and the main diverter (44) are fixedly connected to the frame (41), and the liquid retaining frame (42) is provided with a convex The side diverter (43) and the main diverter (44) are in contact with the inner shell (21), the outer shell (22), and the convex block (421). The convex block (421) and the through groove (422) are provided in a plurality of groups. The plurality of groups of convex blocks (421) and the through groove (422) are linearly and evenly distributed along the liquid retaining frame (42). The rain cap mechanism (6) includes an inner support umbrella (62), and the inner support umbrella (62) is fixedly connected to the frame (41).

4. The distributed photovoltaic grid-connected box with dust-proof function according to claim 3, characterized in that: The side flow diverter (43) is provided with an oblique pipe (431), a turning pipe (432), a vertical groove (433) and a side hole (434). The oblique pipe (431) is provided below the turning pipe (432). Two groups of the vertical grooves (433) are provided. The two groups of the vertical grooves (433) are provided on both sides of the turning pipe (432). The side hole (434) is communicated with the vertical groove (433) on a side away from the main flow diverter (44). The side flow diverter (43) and the main flow diverter (44) have the same virtual features except for the side hole (434). The cooling mechanism (5) further includes a baffle (51), and the baffle (51) is slidably connected to the side flow diverter (43).

5. The distributed photovoltaic grid-connected box with dust-proof function according to claim 4, characterized in that: The cooling mechanism (5) further comprises a liquid collecting pipe (52), the baffle (51) and the liquid collecting pipe (52) are each provided with two groups, the two groups of the baffle (51) and the liquid collecting pipe (52) are both provided on both sides of the circulation pipe (53), the baffle (51) is provided with a liquid collecting hole (511), the liquid collecting hole (511) is provided with a plurality of groups, the plurality of groups of the liquid collecting holes (511) are linearly evenly distributed along the baffle (51), and the liquid collecting pipe (52) is communicated with the liquid collecting hole (511) and the circulation pipe (53).

6. The distributed photovoltaic grid-connected box with dust-proof function according to claim 5, characterized in that: The rain hat mechanism (6) further comprises a cap (61), wherein the cap (61) is fixedly connected to the inner shell (21) and the outer shell (22), the cap (61) is provided with a rain leakage hole (611), the inner umbrella (62) is provided with a convex column (621) and a grille (622), the rain leakage hole (611), the convex column (621), and the grille (622) are provided in a plurality of groups, the plurality of groups of the rain leakage holes (611) and the convex column (621) are uniformly distributed in an array, the plurality of groups of the grilles (622) are uniformly distributed linearly along the inner umbrella (62), and the cap (61) is slidably connected to the inner umbrella (62).

7. The distributed photovoltaic grid-connected box with dust-proof function according to claim 6, characterized in that: The photovoltaic grid-connected box has five working modes: Sealing mode: the protruding column (621) contacts the rain leak hole (611), and the liquid collecting hole (511), the inward-inclined hole (211), and the outward-inclined hole (221) all contact the main body of the side diverter (43); Ventilation mode: the protruding column (621) contacts the rain leak hole (611), the liquid collecting hole (511) contacts the main body of the side diverter (43), the inward-inclined hole (211) and the outward-inclined hole (221) both contact the inclined through pipe (431), and the vertical groove (433) contacts the protruding block (421); Small-displacement drainage mode: the protruding column (621) does not contact the rain leak hole (611), the liquid collecting hole (511) and the inward-inclined hole (211) both contact the main body of the side diverter (43), the outward-inclined hole (221) contacts the turning pipe (432), and the vertical groove (433) contacts the protruding block (421); Large-displacement drainage mode: the protruding column (621) does not contact the rain leak hole (611), the liquid collecting hole (511), the outward-inclined hole (221), and the inward-inclined hole (211) all contact the main body of the side diverter (43), and the vertical groove (433) does not contact the protruding block (421); Cooling mode: the protruding column (621) is not in contact with the rain leaking hole (611), the inwardly inclined hole (211) and the outwardly inclined hole (221) are both in contact with the main body of the side diverter (43), the liquid collecting hole (511) is in contact with the side hole (434), and the vertical groove (433) is in contact with the protruding block (421).

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