Distributed photovoltaic access and regulation device

Abstract

The invention relates to a distributed photovoltaic access and regulation device, and belongs to the technical field of photovoltaic power equipment. Comprising a top plate and a bottom plate, fixed plates on the left side and the right side and movable plates on the front side and the rear side are arranged between the top plate and the bottom plate, each fixed plate and each movable plate are each provided with a row of heat dissipation openings, a baffle is rotationally arranged on the outer side of each heat dissipation opening, and the row of baffles on the same side are connected through a linkage mechanism; the outer side of each fixed plate and the outer side of each movable plate are each provided with a shielding mechanism, each shielding mechanism comprises a liftable push plate, and the lower end of each push plate makes contact with the uppermost baffle on the same side. A wiring port is formed in each movable plate, an upper air bag and a lower air bag which are distributed up and down are arranged in each wiring port, and each upper air bag is connected with the corresponding push plate on the same side through an adjusting mechanism; a driving mechanism is arranged at the upper end of the top plate; the problems that protection of an existing device depends on power supply, the clamping force is constant, and adaptability is poor are solved, and stable operation of a photovoltaic system is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of photovoltaic power equipment, and specifically relates to a distributed photovoltaic access and regulation device. BACKGROUND

[0002] The distributed photovoltaic access and regulation device is a core supporting device in a distributed photovoltaic system, and is mainly used for realizing reliable access between a photovoltaic mechanism and a power grid or a load, power conversion, and operation regulation. The device converts direct current generated by the photovoltaic mechanism into alternating current conforming to power grid standards or load requirements through an internal inverter body. The device also monitors operation parameters (such as output voltage, current, power, etc.) of the photovoltaic system in real time by means of an intelligent terminal body, and dynamically adjusts an operation state according to power grid dispatching requirements or load changes, to ensure efficient use of photovoltaic power. At the same time, the device needs to provide a stable installation and protection environment for internal electrical elements, to ensure long-term safe and stable operation of the entire distributed photovoltaic system. The device is a key hub connecting a distributed photovoltaic power generation unit and a power consumption side, and is widely used in household photovoltaic, industrial and commercial distributed photovoltaic, and other scenes.

[0003] However, the existing distributed photovoltaic access and regulation device still has many deficiencies in actual application, and is difficult to meet the reliable operation requirements under complex climate conditions in different regions, specifically in the following two aspects: First, there is a lack of flexible and reliable self-protection ability in strong wind weather.

[0004] The distributed photovoltaic access and regulation device is usually installed in an open outdoor area (such as a roof or an open site) and needs to withstand extreme wind in different regions for a long time. In southern regions, the device is often attacked by typhoons, and in northern regions, the device is easily affected by sandstorms. The strong wind not only directly impacts the device shell, but also carries debris such as sand, leaves, and plastic fragments to act on the device. The existing device has obvious defects in the protection measures against strong wind, mainly including two cases. The first case is that there is no active protection measure, and the ventilation opening (for internal element heat dissipation) of the device is a weak link. The strong wind can directly flow through the ventilation opening, causing the debris carried by the wind to accumulate and block at the ventilation opening, affecting the heat dissipation efficiency, and even the debris can enter the device interior along with the airflow, causing physical impact or short circuit damage to the precise electrical structure of the inverter body and the intelligent terminal body. The second case is that the protection measure relies on an electrically driven mechanism. When the device detects a strong wind signal, the electrically driven mechanism is started to close all ventilation openings. Although this type of measure can block the debris from entering, closing all ventilation openings will greatly reduce the heat dissipation capacity of the device. If the photovoltaic system is still in operation at this time, the heat generated by the internal elements cannot be dissipated in time, which easily causes faults such as inverter overload and intelligent terminal shutdown, and even causes the risk of element burning. More importantly, the strong wind is often accompanied by power grid fluctuations or power failure. If the device loses power before detecting the strong wind signal, the electrically driven protection mechanism cannot be started, and the device is still exposed to the risk of strong wind and debris impact, and the protection measure is virtually useless.

[0005] Secondly, the clamping stability and adaptability of the electric wire after being connected are insufficient.

[0006] After the electric wire of the external photovoltaic system is connected through the connection port of the device, it needs to be kept in stable connection for a long time to avoid loosening or poor contact of the line caused by external force. In strong wind, the electric wire will swing violently along with the airflow, continuously generating pulling force on the connection port, which easily causes the line to loosen, increases the contact resistance, and even causes arc discharge fault. Although the existing device uses a limiting structure (such as a buckle, a pressing plate, or an air bag) to fix the electric wire, there are obvious design defects. For example, the air bag clamping force of the existing device is usually a constant value set at the factory, which cannot be dynamically adjusted according to the wind strength. If the clamping force is set too small, the pulling force generated by the swinging electric wire in strong wind easily breaks through the clamping force, causing the electric wire to loosen. If the clamping force is set too large to cope with strong wind, in the normal operation state without wind or with slight wind, the long-term high-strength clamping of the elastic material of the air bag and the insulation layer of the electric wire continuously generates stress, which accelerates the material fatigue and aging, shortens the service life of the air bag and the electric wire, and even may cause a risk of electric leakage due to damage to the insulation layer. It is difficult to balance between "anti-loosening" and "anti-aging".

[0007] Therefore, it is necessary to provide a new distributed photovoltaic access and regulation device to solve the above technical problems. SUMMARY

[0008] The present application overcomes the deficiencies of the prior art, and provides a distributed photovoltaic access and regulation device.

[0009] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme.

[0010] A distributed photovoltaic access and regulation device, comprising top and bottom plates distributed upward and downward, a fixed plate is fixedly arranged between the left and right ends of the top and bottom plates, an active plate is rotatably arranged between the front and rear ends of the top and bottom plates, a row of heat dissipation openings is arranged on each fixed plate and active plate, a baffle is rotatably arranged outside each heat dissipation opening, a row of baffles on the same side are connected through a linkage mechanism, and the linkage mechanism is used to drive the synchronous rotation of the baffles on the same side; a set of shielding mechanisms is arranged outside each fixed plate and active plate, the shielding mechanism comprises a liftable push plate, and the lower end of the push plate is in contact with the uppermost baffle on the same side; a wiring port is arranged on each active plate, an upper air bag and a lower air bag are arranged inside the wiring port and distributed upward and downward, the push plate on the same side is connected to the upper air bag through an adjusting mechanism, and the push plate drives the lower air bag to be pressed downward when the push plate is lowered; a driving mechanism is arranged at the upper end of the top plate, and the driving mechanism selectively drives different push plates to be lowered by different amplitudes according to the wind direction and wind force.

[0011] Further, a mounting plate is fixedly arranged between the top and bottom plates, a plurality of groups of inverter bodies and intelligent terminal bodies are fixedly arranged on the front and rear sides of the mounting plate, and a plurality of groups of access end bodies are electrically connected to the inverter bodies; after the external power line passes through the wiring port, the external power line is connected to the access end body, and the external power line is clamped between the upper air bag and the lower air bag.

[0012] Further, a rotating shaft is fixedly arranged at the upper end of each baffle, and the two ends of the rotating shaft are rotatably inserted into the inner walls on both sides of the corresponding heat dissipation opening; a torsional spring is arranged at the two ends of the rotating shaft, one end of the torsional spring is fixedly connected to the rotating shaft, and the other end of the torsional spring is fixedly connected to the inner wall of the heat dissipation opening.

[0013] Further, the linkage mechanism comprises a connecting block and a connecting rod, and a connecting block is fixedly arranged at the middle of the upper end face of each baffle, and the connecting blocks on a row of baffles on the same side are connected through the connecting rod.

[0014] Further, the shielding mechanism further comprises a first sliding block, a second sliding block and a first spring; a first sliding groove is arranged at the middle of the upper side of each fixed plate, the first sliding block is arranged to slide in the first sliding groove along the vertical direction, and the outer side of one end of the first sliding block is fixedly connected with the corresponding push plate; a second sliding groove is arranged at the middle of the upper side of each movable plate, the second sliding block is arranged to slide in the second sliding groove along the vertical direction, and the outer side of one end of the second sliding block is fixedly connected with the corresponding push plate; a vertical first spring is fixedly arranged at the bottom of each first sliding groove and second sliding groove, the upper end of the first spring in the first sliding groove is fixedly connected with the first sliding block, and the upper end of the second spring in the second sliding groove is fixedly connected with the second sliding block.

[0015] Further, the shielding mechanism further comprises an inclined plate and a pressing plate; the lower end of each push plate is fixedly provided with an inclined plate, the lower end of the inclined plate is inclined outwardly; the inclined plate at the lower end of each push plate is in contact with the uppermost baffle on the same side; a pressing plate is fixedly arranged at one side of the upper end of each push plate, and the pressing plate is located above the outer edge of the top plate.

[0016] Further, two wire connection ports are arranged on each movable plate, and the two wire connection ports are symmetrically arranged on the two sides of the second sliding groove; a lower supporting plate is fixedly arranged at the lower end of the wire connection port, and the lower air bag is fixedly connected with the lower supporting plate; an upper supporting plate is arranged to slide in the wire connection port along the vertical direction, and the upper end of the upper air bag is fixedly connected with the upper supporting plate.

[0017] Further, two square sliding grooves are arranged in each movable plate, the two square sliding grooves are symmetrically arranged on the two sides of the second sliding groove, and the two square sliding grooves are respectively located above the two wire connection ports; the two square sliding grooves are in communication with the second sliding groove; the bottom of each square sliding groove is in communication with the inside of the wire connection port below through a vertical first communication groove; an arc-shaped sliding groove is arranged on the inner wall of the side of the square sliding groove away from the second sliding groove.

[0018] Further, the adjusting mechanism comprises a push rod, a rotating column, a lever and an adjusting rod; a horizontal push rod is arranged in each square sliding groove, one end of the push rod is fixedly connected with the second sliding block, and the end of the push rod away from the second sliding block is fixedly provided with a rotating column; a lever is rotatably arranged in each square sliding groove, the end of the lever close to the second sliding groove is inclined downward and rotatably connected with the inner wall of the square sliding groove, the end of the lever away from the second sliding groove is inclined upward and in sliding contact with the arc-shaped sliding groove; the rotating column is in sliding contact with the lever; an adjusting rod is arranged to slide in the first communication groove along the vertical direction, the upper end of the adjusting rod is in sliding contact with the middle of the lever, and the lower end of the adjusting rod is fixedly connected with the upper supporting plate.

[0019] Further, the driving mechanism comprises a rotating rod, a rotating disc, an arc-shaped plate, a steering plate, a driving plate, a limiting disc and a second spring; a third sliding groove is arranged at the center of the upper end surface of the top plate, a second communication groove is arranged at the center of the upper end surface of the top plate, and the lower end of the second communication groove is in communication with the interior of the third sliding groove; the limiting disc is slidably arranged in the third sliding groove, the second spring is fixedly arranged at the bottom end of the third sliding groove, and the upper end of the second spring is in sliding contact with the lower end surface of the limiting disc; the rotating rod is rotatably inserted into the second communication groove, and the lower end of the rotating rod is fixedly connected with the center of the upper end surface of the limiting disc; the rotating disc is fixedly sleeved on the upper end of the rotating rod, an arc-shaped plate in the shape of a circle arc is fixedly arranged on the outer cylindrical surface of the rotating disc, the covering angle of the arc-shaped plate is 210°, and the arc-shaped plate is located above two or three pressing plates; the steering plate is fixedly arranged on the upper end of the rotating disc, and the driving plate is fixedly arranged on the upper end of the steering plate; the horizontal section of the steering plate is two isosceles triangles with inwardly recessed equal sides, and the width of the steering plate gradually decreases from the bottom end to the top end; and the top surface of the driving plate is convex, and the convex degree of the top surface of the driving plate gradually increases from the direction close to the tip of the steering plate to the direction away from the tip of the steering plate.

[0020] The beneficial effects of the present application relative to the prior art are: Firstly, the present application realizes self-adaptive protection driven by pure wind energy through the mechanical linkage design of the driving mechanism and the shielding mechanism, and takes into account the heat dissipation requirement.

[0021] 1. Wind energy driving, no failure in power failure: the driving mechanism captures wind direction through the steering plate, drives the arc-shaped plate and the driving plate to rotate with the rotating rod, and the whole process does not require external power; even in strong wind accompanied by power failure, the protection action can still be completed relying on wind energy, completely solving the problem of "power failure leading to failure" of the existing electrically driven protection, and being applicable to extreme weather such as typhoon and sandstorm which are easily accompanied by power grid fluctuation.

[0022] 2. Directional shielding of windward surface, without sacrificing overall heat dissipation: the covering angle of the arc-shaped plate is 210° and only the pressing plate on one side of the windward surface is extruded, driving the push plate and the inclined plate to drive the baffle to shield the heat dissipation opening on one side of the windward surface, rather than closing all heat dissipation openings, and the heat dissipation openings on the leeward surface remain unobstructed, so that the internal element heat can be continuously discharged, avoiding the risk of "temperature rising sharply and element burning out" caused by "all closed ventilation openings" in the prior art; at the same time, the filter holes on the filter plate are inclined downward on the outside, which can further block the impurities in the wind, and form a "double barrier" in cooperation with the baffle protection, solving the problem of "impurities blocking the ventilation opening or damaging the internal electrical appliances" without protection measures.

[0023] 3. Automatic reset without manual intervention: the first spring and the torsion spring in the shielding mechanism automatically rebound after the wind speed decreases, driving the push plate and the baffle to reset, so that the heat dissipation opening restores normal ventilation; the "protection-reset" cycle can be completed without manual operation, reducing operation and maintenance costs.

[0024] Secondly, the application realizes dynamic matching of clamping force with wind force through linkage design of adjusting mechanism and air bag.

[0025] 1. Force and wind force change synchronously, anti-looseness is more reliable: when wind speed increases, the driving mechanism drives the pressing plate to move downward, the second sliding block slides along the second sliding groove, synchronously pulls the push rod downward, the push rod extrudes the lever; the lever rotates around the shaft to push the adjusting rod to move downward, drives the upper supporting plate and the upper air bag to approach the lower air bag, and the extrusion force increases with the increase of wind force, which can effectively resist the pulling force generated by the swinging of the wire due to strong wind, avoid looseness of the line and poor contact, and solve the problem of "small force and easy looseness" of the existing device.

[0026] 2. Automatically release force when wind force decreases, prolong the service life of the material: after the wind speed decreases, the first spring rebounds to drive the second sliding block to reset, and the pressure of the push rod on the lever disappears; the upper air bag relies on its elasticity to push the upper supporting plate and the adjusting rod to move upward, and the clamping force returns to the normal value, avoiding the air bag elastic fatigue and the aging and damage of the wire insulation layer caused by the "constant large force" of the existing device, and achieving accurate balance between "anti-looseness" and "anti-material loss". The design of the gap height matching between the upper supporting plate and the lower supporting plate and the gap height between the pressing plate and the top plate ensures the accuracy of force adjustment.

[0027] Thirdly, the application not only solves the core functional defects, but also further improves the regional adaptability and operation convenience of the device, and makes up for the shortcomings of the existing device, such as poor adaptability and complex maintenance.

[0028] 1. Strong adaptability to different regions: According to the different strong wind scenes of "typhoon in the south and sandstorm in the north" in the background technology, the turning plate of the driving mechanism can adapt to different wind directions, and the baffle only blocks the heat dissipation port on one side of the windward surface, which can block rainwater and sundries carried by the typhoon and resist sand and stones in the sandstorm; the adjusting mechanism dynamically adjusts the wire clamping force according to the wind intensity in different regions, without the need to adjust the parameters separately according to the region, reducing the selection and installation cost.

[0029] 2. Maintenance convenience is significantly improved: the movable plate can rotate around the fixed plate, and after being opened, it can directly contact the inverter body, intelligent terminal body and wiring port on the mounting plate. Compared with the existing fixed shell structure, the element maintenance and wire replacement can be completed without disassembling the whole shell, which greatly shortens the maintenance time; at the same time, the baffle is linked with the connecting rod through the connecting block, and when a single baffle fails, it can be replaced independently, reducing the maintenance cost.

[0030] 3. The stability and durability of the structure are improved: the limiting disc and the second spring in the driving mechanism can buffer the vibration generated when the rotating rod rotates, avoiding the damage of the parts due to wind fluctuation; the trapezoidal cross section of the first sliding block and the slope treatment at both ends of the arc-shaped plate in the shielding mechanism reduce the friction loss when the parts slide and contact, prolong the service life of the whole device, and ensure long-term stable operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] The application will be described in further detail below with reference to the drawings: Figure 1 is a structural schematic diagram of the whole application; Figure 2 is a partial structural schematic diagram of the driving mechanism; Figure 3 is a connection schematic diagram between the rotating disc, the arc-shaped plate and the pressing plate; Figure 4 is a connection schematic diagram between the shielding mechanism, the linkage mechanism and the baffle; Figure 5 is a partial structural schematic diagram of the rotating disc; Figure 4 Figure 6 is a connection schematic diagram between the pressing plate, the pushing plate and the first sliding slot, the first sliding block; Figure 7 is a connection schematic diagram between the movable plate, the fixed plate and the mounting plate; Figure 8 is a connection schematic diagram between the top plate after being cut, the rotating rod, the limiting disc and the second spring; Figure 9 is a connection schematic diagram between the adjusting mechanism and the movable plate; Figure 10 is a connection schematic diagram between the adjusting mechanism and the upper air bag and the lower air bag; Figure 11 is a top view when the arc-shaped plate is at angle one; Figure 12 is a top view when the arc-shaped plate is at angle two; Figure 13 is a connection schematic diagram between the rotating plate and the driving plate Figure 1 ; Figure 14 is a connection schematic diagram between the rotating plate and the driving plate Figure 2 ; Figure 15 is a connection schematic diagram between the driving plate after being cut and the rotating plate; Figure 16 is a horizontal sectional schematic diagram of the rotating plate; ​Among them, 1 is the top plate, 2 is the fixed plate, 3 is the bottom plate, 4 is the movable plate, 5 is the mounting plate, 6 is the inverter body, 7 is the smart terminal body, 8 is the access terminal body, 9 is the heat dissipation vent, 10 is the filter plate, 11 is the baffle, 12 is the wiring port, 13 is the lower airbag, 14 is the upper airbag, 15 is the push plate, 16 is the first slide groove, 17 is the first slider, 18 is the second slide groove, 19 is the second slider, 20 is the pressure plate, 21 is the groove, and 22 is the groove. 23 is an inclined plate, 24 is a rotating shaft, 25 is a torsion spring, 26 is a connecting block, 27 is a connecting rod, 28 is a first spring, 29 is a square slide groove, 30 is a push rod, 31 is a lever, 32 is a lever, 33 is an upper support plate, 34 is a lower support plate, 35 is an adjusting rod, 36 is a rotating rod, 37 is a turntable, 38 is an arc plate, 39 is a steering plate, 40 is a drive plate, 41 is a third slide groove, 42 is a limit plate, and 43 is a second spring. Detailed Implementation

[0032] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0033] like Figure 1 As shown in Figure 16, this invention provides a distributed photovoltaic access and control device, including a top plate 1 and a bottom plate 3 distributed vertically. A fixed plate 2 is fixedly installed between the left and right ends of the top plate 1 and the bottom plate 3, and a movable plate 4 is rotatably installed between the front and rear ends of the top plate 1 and the bottom plate 3. A row of heat dissipation vents 9 is provided on each fixed plate 2 and the movable plate 4. A baffle 11 is rotatably installed on the outside of each heat dissipation vent 9. The row of baffles 11 on the same side is connected by a linkage mechanism, which drives the row of baffles 11 on the same side to rotate synchronously. A set of shielding mechanisms is provided on the outer side of each movable plate 4. The shielding mechanism includes a liftable push plate 15, the lower end of which contacts the uppermost baffle 11 on the same side. Each movable plate 4 is provided with a wiring port 12. Inside the wiring port 12, an upper airbag 14 and a lower airbag 13 are arranged vertically. The upper airbag 14 is connected to the push plate 15 on the same side through an adjustment mechanism. When the push plate 15 descends, it drives the upper airbag 14 to squeeze the lower airbag 13 downward. A driving mechanism is provided at the upper end of the top plate 1. The driving mechanism selectively drives different push plates 15 to descend by different degrees according to the wind direction and wind force.

[0034] The top plate 1 and the bottom plate 3 are horizontally arranged square plate structures, the fixed plate 2 and the movable plate 4 are vertically arranged square plate structures, and the top plate 1, the bottom plate 3, the fixed plate 2 and the movable plate 4 form a square box structure. The movable plate 4 is rotationally connected with the fixed plate 2 on one side, and a handle is fixedly arranged outside the movable plate 4, so that the movable plate 4 can be conveniently opened through the handle.

[0035] An installation plate 5 is also fixedly arranged between the top plate 1 and the bottom plate 3, and the installation plate 5 is a square plate structure in the vertical plane in the left-right direction. A plurality of groups of inverter bodies 6, intelligent terminal bodies 7 and other electrical equipment for photovoltaic access and regulation are fixedly arranged on the front and rear sides of the installation plate 5, and the inverter bodies 6 are electrically connected with a plurality of groups of access end bodies 8. External wires are connected with the access end bodies 8 after passing through the wiring ports 12, and the external wires are clamped between the upper air bag 14 and the lower air bag 13.

[0036] The heat dissipation holes 9 on the fixed plate 2 and the movable plate 4 are equidistantly arranged along the vertical direction. The heat dissipation holes 9 on the fixed plate 2 and the movable plate 4 are horizontally arranged square through holes, and filter plates 10 are fixedly arranged inside the heat dissipation holes 9. The filter holes on the filter plates 10 gradually incline downward from inside to outside, so that rainwater, dust and the like are prevented from entering from the outside while not hindering heat dissipation. A horizontal rotating shaft 23 is fixedly arranged on the upper end of each baffle 11, and the two ends of the rotating shaft 23 are rotationally inserted into the inner walls on the two sides of the corresponding heat dissipation hole 9. Torsion springs 24 are arranged at the two ends of the rotating shaft 23, one end of the torsion spring 24 is fixedly connected with the rotating shaft 23, and the other end of the torsion spring 24 is fixedly connected with the inner wall of the heat dissipation hole 9. The torsion springs 24 are arranged at the two ends of the rotating shaft 23 to ensure that the baffle 11 is always in an upwardly rotated open state when not subjected to external force.

[0037] The linkage mechanism includes connecting blocks 25 and connecting rods 26. A connecting block 25 is fixedly arranged at the middle of the upper end surface of each baffle 11, and the end of the connecting block 25 extends to the outside of the baffle 11. The connecting blocks 25 on the baffles 11 on the same side are connected through two connecting rods 26, and the two connecting rods 26 are kept vertical. One end of each connecting block 25 extending to the outside of the baffle 11 is hingedly connected with two connecting rods 26 on the two sides thereof. The baffles 11 on the same side are kept parallel. The upper and lower adjacent baffles 11, the connecting rods 26 and the upper and lower adjacent rotating shafts 23 together form a parallelogram structure, so that the lower baffle 11 is synchronously rotated with the upper baffle 11. Therefore, when the uppermost baffle 11 on the same side is rotated, the baffles 11 on the same side are synchronously rotated. When it is windy outdoors, the shielding mechanism drives the baffles 11 to rotate downward through the linkage mechanism, so as to shield the heat dissipation holes 9 on the windward side.

[0038] The shielding mechanism further comprises an inclined plate 22, a pressing plate 20, a first sliding block 17, a second sliding block 19, and a first spring 27.

[0039] A first sliding groove 16 is arranged at the upper middle part of the outer side of each fixed plate 2, and a first sliding block 17 is slidably arranged in the first sliding groove 16 along the vertical direction. The outer side of one end of the first sliding block 17 is fixedly connected with the corresponding push plate 15. A second sliding groove 18 is arranged at the upper middle part of the outer side of each movable plate 4, and a second sliding block 19 is slidably arranged in the second sliding groove 18 along the vertical direction. The outer side of one end of the second sliding block 19 is fixedly connected with the corresponding push plate 15. A vertical first spring 27 is fixedly arranged at the inner bottom end of each first sliding groove 16 and second sliding groove 18. The upper end of the first spring 27 in the first sliding groove 16 is fixedly connected with the first sliding block 17, and the upper end of the second spring 43 in the second sliding groove 18 is fixedly connected with the second sliding block 19. The horizontal cross section of the first sliding block 17 is trapezoidal, and the horizontal cross section of the second sliding block 19 is square.

[0040] A recess 21 is arranged at the lower middle part of each push plate 15, and two inclined plates 22 are fixedly arranged at the lower end of each push plate 15. The two inclined plates 22 are symmetrically arranged at the two sides of the recess 21, and the lower end of the inclined plate 22 is inclined outward. The inclined plate 22 at the lower end of each push plate 15 is in contact with the uppermost baffle 11 on the same side. The connecting block 25 on the uppermost baffle 11 is located between the two inclined plates 22 at the lower end of the push plate 15, and the width of the connecting block 25 is smaller than the gap between the two inclined plates 22, so that the inclined plate 22 does not interfere with the connecting block 25 on the uppermost baffle 11 when it slides downward.

[0041] A pressing plate 20 is fixedly arranged at one side of the upper end of each push plate 15, and the pressing plate 20 is located above the outer edge of the top plate 1. The two sides of the pressing plate 20 are inclined.

[0042] When the pressing plate 20 is not subjected to downward pressure, under the action of the elastic force of the first spring 27, the push plate 15 is located at the highest point, the inclined plate 22 at the lower end of the push plate 15 is also located at the highest point, under the action of the elastic force of the torsional spring 24 at the end of the rotating shaft 23, the baffle 11 is turned upward to the maximum angle, and the heat dissipation opening 9 is in the open state. When the pressing plate 20 is subjected to downward pressure, the pressing plate 20 drives the push plate 15 to descend, the push plate 15 drives the inclined plate 22 to synchronously descend, and the push plate 15 compresses the first spring 27 through the first sliding block 17 or the second sliding block 19; the inclined plate 22 presses the uppermost baffle 11 on the same side downward to make it turn downward, and the uppermost baffle 11 drives a row of baffles 11 on the same side to synchronously turn downward through the linkage mechanism. With the greater downward pressure that the pressing plate 20 is subjected to, the greater the descending range of the push plate 15, the greater the compression range of the first spring 27, and the greater the downward turning angle of the uppermost baffle 11. When the downward pressure that the pressing plate 20 is subjected to disappears, the first spring 27 starts to rebound, thereby driving the push plate 15 to ascend, the pressure applied by the descending push plate 15 to the inclined plate 22 to the uppermost baffle 11 gradually decreases, under the action of the elastic force of the torsional spring 24 at the end of the rotating shaft 23, the baffle 11 is turned upward to the maximum angle, and the heat dissipation opening 9 is in the open state again.

[0043] Two wire connection ports 12 are arranged on each movable plate 4 and are symmetrically arranged on the two sides of the second sliding groove 18. A lower supporting plate 34 is fixedly arranged at the lower end in the wire connection port 12, and the lower end of the lower air bag 13 is fixedly connected with the lower supporting plate 34. An upper supporting plate 33 is slidably arranged at the upper end in the wire connection port 12 in the vertical direction, and the upper end of the upper air bag 14 is fixedly connected with the upper supporting plate 33. The height of the gap between the upper supporting plate 33 and the lower supporting plate 34 is equal to the height of the gap between the pressing plate 20 and the top plate 1, which can ensure that the moving distance of the pressing plate 20 is accurately matched with the moving distance of the upper supporting plate 33, so that the extrusion degree of the upper air bag 14 corresponds to the wind speed, and the accuracy of the wire extrusion degree adjustment of the adjusting mechanism is ensured.

[0044] The adjusting mechanism comprises a push rod 29, a push column 30, a lever 32 and an adjusting rod 35.

[0045] Two square sliding grooves 28 are arranged in each movable plate 4 and are symmetrically arranged on the two sides of the second sliding groove 18 and above the two wire connection ports 12. The two square sliding grooves 28 are in communication with the second sliding groove 18. The bottom end in each square sliding groove 28 is in communication with the inside of the wire connection port 12 below through a vertical first communication groove. An arc-shaped sliding groove 31 is arranged on the inner wall of the side of the square sliding groove 28 away from the second sliding groove 18.

[0046] A horizontal push rod 29 is arranged inside each square sliding slot 28, one end of the push rod 29 is fixedly connected with the second sliding block 19, and a pushing column 30 is fixedly arranged at the end of the push rod 29 away from the second sliding block 19. A lever 32 is rotatably arranged inside each square sliding slot 28, one end of the lever 32 close to the second sliding slot 18 is downwardly inclined and rotatably connected with the inner wall of the square sliding slot 28, and the other end of the lever 32 away from the second sliding slot 18 is upwardly inclined and slidably connected with the arc-shaped sliding slot 31. The pushing column 30 is slidably connected with the lever 32. An adjusting rod 35 is slidably arranged in the first communicating slot in the vertical direction, the upper end of the adjusting rod 35 is slidably connected with the middle part of the lever 32, and the lower end of the adjusting rod 35 is fixedly connected with the upper supporting plate 33.

[0047] When the push plate 15 is lowered, the second sliding block 19 is lowered synchronously, the second sliding block 19 drives the two push rods 29 to be lowered synchronously in the square sliding slot 28, the pushing column 30 at the end of the push rod 29 presses the lever 32 downward, the lever 32 away from the second sliding slot 18 is rotated downward, the lever 32 presses the adjusting rod 35 downward, the adjusting rod 35 is slid downward in the first communicating slot, the adjusting rod 35 drives the upper supporting plate 33 to slide downward, the upper supporting plate 33 and the lower supporting plate 34 are close to each other, so that the upper air bag 14 and the lower air bag 13 are pressed to each other, thereby stably clamping the external wire in the wire port 12, reducing the shaking range of the external wire under strong wind, and ensuring the stable connection of the external wire.

[0048] The adjusting mechanism can dynamically adjust the clamping force of the upper air bag 14 and the lower air bag 13 on the external wire through the lowering range of the push plate 15, so as to prevent the external wire from shaking and causing poor contact or damage when the wind speed is too large.

[0049] The driving mechanism comprises a rotating rod 36, a rotating disc 37, an arc-shaped plate 38, a turning plate 39, a driving plate 40, a limiting disc 42 and a second spring 43.

[0050] A third sliding groove 41 is internally arranged at the center of the upper end surface of the top plate 1, and a second communication groove is arranged at the center of the upper end surface of the top plate 1, and the lower end of the second communication groove is in communication with the interior of the third sliding groove 41. A horizontal circular limiting disc 42 is slidably arranged in the third sliding groove 41 in the vertical direction, and the limiting disc 42 can also rotate in the third sliding groove 41. A vertical second spring 43 is fixedly arranged at the bottom end of the third sliding groove 41, and the upper end of the second spring 43 is in sliding contact with the lower end surface of the limiting disc 42. A vertical rotating rod 36 is rotatably inserted into the second communication groove, and the lower end of the rotating rod 36 is fixedly connected to the center of the upper end surface of the limiting disc 42. A horizontal circular rotating disc 37 is fixedly sleeved on the upper end of the rotating rod 36, and a circular arc-shaped arc plate 38 is fixedly arranged on the outer cylindrical surface of the rotating disc 37, and the covering angle of the arc plate 38 is 210°, and the end surfaces of the arc plate 38 are inclined surfaces with inwardly recessed lower edges. The arc plate 38 is located above two or three pressing plates 20. A turning plate 39 is fixedly arranged on the upper end of the rotating disc 37, and a driving plate 40 is fixedly arranged on the upper end of the turning plate 39. The horizontal section of the turning plate 39 is two isosceles triangles with inwardly recessed equal sides, and the width of the turning plate 39 gradually decreases from the bottom end to the top end. The top surface of the driving plate 40 is convex, and the degree of convexity of the top surface of the driving plate 40 gradually increases from the direction close to the tip of the turning plate 39 to the direction away from the tip of the turning plate 39. In the vertical direction, the height of the highest point of the pressing plate 20 is less than the thickness of the arc plate 38.

[0051] The core function of the driving mechanism is to capture outdoor wind power and convert it into mechanical power to provide energy for the operation of the shielding mechanism and the adjusting mechanism, so as to realize the self-adaptive response of the device to wind speed changes, and the power transmission and component movement follow the logic of "turning plate 39 orientation → component position adjustment → driving plate 40 pressure generation".

[0052] Turning plate 39 orientation and component position adjustment: When there is wind outside, the wind first acts on the turning plate 39. Due to the special structure of the turning plate 39, which has two isosceles triangles with inwardly recessed equal sides as horizontal cross sections and gradually decreasing width from the bottom end to the top end, the wind pressure difference is formed on both sides of the turning plate 39: the wind resistance on the narrow end is much smaller than that on the wide end, so the wind will push the turning plate 39 to automatically adjust the direction until the tip of the turning plate 39 accurately points to the wind direction. Since the turning plate 39 is fixedly connected with the rotating disc 37, the driving plate 40, the rotating rod 36, the arc-shaped plate 38, and the limiting disc 42, the turning plate 39 drives the rotating disc 37, the driving plate 40, the rotating rod 36, the arc-shaped plate 38, and the limiting disc 42 to rotate synchronously during the orientation process, so that the entire driving mechanism is finally adjusted to the appropriate position of "the arc-shaped plate 38 facing the pressing plate 20 on the windward surface", and the subsequent power transmission is prepared. At the same time, this structure can ensure that the wind force of different wind directions can trigger the orientation action, realizing wind direction self-adaptation.

[0053] Driving plate 40 generates component force and downward pressure: After the driving mechanism completes the position adjustment, the continuous wind force acts on the top surface of the driving plate 40, which is convex and gradually increases in convexity from the tip of the turning plate 39 to the position away from the tip of the turning plate 39. This convex structure causes the wind force acting vertically on the top surface to be decomposed into component forces: one part of the wind force is converted into "rotational auxiliary component force" in the tangent direction of the top surface, further stabilizing the orientation state of the driving mechanism; the other part of the wind force is converted into "downward pressure component force" perpendicular to the direction of the top plate 1, which is transmitted to the turning plate 39 through the driving plate 40, and then transmitted to the arc-shaped plate 38 through the turning plate 39, so that the arc-shaped plate 38 obtains the power of downward extrusion.

[0054] Power transmission and buffer reset: Since the coverage angle of the arc-shaped plate 38 is 210°, and it has been adjusted to the windward position with the turning plate 39, the downward pressure component force will cause the arc-shaped plate 38 to generate downward extrusion force on the pressing plate 20 on the two or three surfaces directly opposite the wind (when the wind direction is perpendicular to a surface, the two surfaces adjacent to this surface will also be affected by the wind). The height of the highest point of the pressing plate 20 is less than the thickness of the arc-shaped plate 38, ensuring that the arc-shaped plate 38 can effectively contact and extrude the pressing plate 20. At the same time, the two ends of the arc-shaped plate 38 are designed as inclined surfaces, which can reduce the impact force during contact with the pressing plate 20, avoid damage to the components caused by rigid collision, and also prevent jamming, ensuring smooth power transmission.

[0055] The limiting disc 42 cooperates with the second sliding groove 18 to limit the length of the rotating rod 36 that can slide in the vertical direction, and the second spring 43 is used for resetting the height of the rotating rod 36. The top end of the second spring 43 is in contact with the limiting disc 42 to avoid excessive torsional deformation of the second spring 43 caused by the rotating rod 36 rotating in one direction at a large angle, which may damage the second spring 43.

[0056] The working principle of the present application is as follows: Under the action of external wind force, the deflector 39 rotates to the windward position, and drives the rotating disc 37 and the arc-shaped plate 38 to rotate, so that the arc-shaped plate 38 rotates to above the two or three windward surface pressing plates 20. Since the wind force acts on the driving plate 40 to generate a downward component force, the driving plate 40 drives the arc-shaped plate 38 to slide downward through the deflector 39 and the rotating disc 37, and the arc-shaped plate 38 drives the two or three windward surface pressing plates 20 to slide downward. With the increase of the wind force, the sliding range of the pressing plates 20 also increases.

[0057] When the pressing plates 20 slide downward, the push plate 15 also descends, and the push plate 15 drives the inclined plate 22 to descend synchronously. The push plate 15 compresses the first spring 27 through the first sliding block 17 or the second sliding block 19. The inclined plate 22 presses the uppermost baffle 11 on the same side downward, so that the uppermost baffle 11 drives a row of baffles 11 on the same side to rotate downward synchronously through the linkage mechanism, so that the baffles 11 outside the heat dissipation opening 9 on the windward side gradually close.

[0058] When the push plate 15 descends, the second sliding block 19 also descends synchronously, and the second sliding block 19 drives the two push rods 29 inside the square sliding groove 28 to descend synchronously. The push rod 29 end portion presses the lever 32 downward, so that the lever 32 rotates downward away from the second sliding groove 18. The lever 32 presses the adjusting rod 35 downward, so that the adjusting rod 35 slides downward inside the first communication groove. The adjusting rod 35 drives the upper supporting plate 33 to slide downward, and the upper supporting plate 33 and the lower supporting plate 34 approach each other, so that the upper air bag 14 and the lower air bag 13 are pressed against each other, thereby stably clamping the external wire inside the wiring port 12.

[0059] When the arc-shaped plate 38 rotates to be separated from the pressing plates 20, the pressing plates 20, the push plate 15 and the inclined plate 22 slide upward under the rebound force of the first spring 27. The push plate 15 drives the second sliding block 19 to ascend synchronously, and the second sliding block 19 drives the two push rods 29 to slide upward. The push rod 29 end portion no longer presses the lever 32 downward. The adjusting rod 35 slides upward under the rebound force of the upper air bag 14 and the lower air bag 13, and the adjusting rod 35 pushes the lever 32 upward to restore to the initial angle. At the same time, the pressure applied by the inclined plate 22 at the lower end of the push plate 15 to the uppermost baffle 11 gradually decreases. Under the rebound force of the torsional spring 24 at the end of the rotating shaft 23, the baffle 11 rotates upward to the maximum angle, and the heat dissipation opening 9 is in the open state again. The limiting disc 42 at the bottom of the rotating rod 36 can slide inside the third sliding groove 41, and the second spring 43 can buffer the vibration generated when the rotating rod 36 rotates, reduce the influence on the driving mechanism and the whole device, ensure the stable operation of the driving mechanism, and avoid the damage of the components caused by the fluctuation of the wind force.

[0060] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.

Claims

1. A distributed photovoltaic grid connection and control device, characterized in that: The system includes a top plate (1) and a bottom plate (3) distributed vertically. A fixed plate (2) is fixedly installed between the left and right ends of the top plate (1) and the bottom plate (3). A movable plate (4) is rotatably installed between the front and rear ends of the top plate (1) and the bottom plate (3). A row of heat dissipation vents (9) is provided on each fixed plate (2) and the movable plate (4). A baffle (11) is rotatably installed on the outside of each heat dissipation vent (9). The row of baffles (11) on the same side is connected by a linkage mechanism, which drives the row of baffles (11) on the same side to rotate synchronously. A baffle is provided on the outside of each fixed plate (2) and the movable plate (4). A set of shielding mechanisms, the shielding mechanism including a liftable push plate (15), the lower end of the push plate (15) is in contact with the uppermost baffle (11) on the same side; each movable plate (4) is provided with a wiring port (12), and an upper airbag (14) and a lower airbag (13) are provided inside the wiring port (12). The upper airbag (14) is connected to the push plate (15) on the same side through an adjustment mechanism. When the push plate (15) descends, it drives the upper airbag (14) to squeeze the lower airbag (13) downward; a drive mechanism is provided at the upper end of the top plate (1), and the drive mechanism selectively drives different push plates (15) to descend by different degrees according to the wind direction and wind force.

2. The distributed photovoltaic grid connection and control device according to claim 1, characterized in that: An installation plate (5) is fixedly installed between the top plate (1) and the bottom plate (3). Multiple inverter bodies (6) and smart terminal bodies (7) are fixedly installed on the front and rear sides of the installation plate (5). Multiple access terminal bodies (8) are electrically connected to the inverter bodies (6). External wires pass through the wiring port (12) and are connected to the access terminal bodies (8). The external wires are clamped between the upper airbag (14) and the lower airbag (13).

3. The distributed photovoltaic grid connection and control device according to claim 1, characterized in that: A rotating shaft (23) is fixedly installed on the upper end of each baffle (11). The two ends of the rotating shaft (23) are respectively rotatably inserted into the inner walls on both sides of the corresponding heat dissipation port (9). A torsion spring (24) is installed on both ends of the rotating shaft (23). One end of the torsion spring (24) is fixedly connected to the rotating shaft (23), and the other end of the torsion spring (24) is fixedly connected to the inner wall of the heat dissipation port (9).

4. The distributed photovoltaic grid connection and control device according to claim 1, characterized in that: The linkage mechanism includes a connecting block (25) and a connecting rod (26); a connecting block (25) is fixedly installed in the middle of the upper end face of each baffle (11), and the connecting blocks (25) on a row of baffles (11) on the same side are connected to each other by the connecting rod (26).

5. A distributed photovoltaic grid connection and control device according to claim 1, characterized in that: The blocking mechanism also includes a first slider (17), a second slider (19), and a first spring (27); a first groove (16) is provided at the middle of the upper part of the outer side surface of each fixed plate (2), and a first slider (17) is slidably arranged in the first groove (16) along the vertical direction. One end of the outer side of the first slider (17) is fixedly connected to the corresponding push plate (15); a second groove (18) is provided at the middle of the upper part of the outer side surface of each movable plate (4), and a second slider (19) is slidably arranged in the second groove (18) along the vertical direction. One end of the outer side of the second slider (19) is fixedly connected to the corresponding push plate (15); a vertical first spring (27) is fixedly arranged at the bottom of each first groove (16) and second groove (18). The upper end of the first spring (27) inside the first groove (16) is fixedly connected to the first slider (17), and the upper end of the second spring (43) inside the second groove (18) is fixedly connected to the second slider (19).

6. A distributed photovoltaic grid connection and control device according to claim 5, characterized in that: The shielding mechanism also includes an inclined plate (22) and a pressure plate (20); an inclined plate (22) is fixedly installed at the lower end of each push plate (15), and the lower end of the inclined plate (22) is inclined outward; the inclined plate (22) at the lower end of each push plate (15) is in contact with the uppermost baffle (11) on the same side; a pressure plate (20) is fixedly installed on one side of the upper end of each push plate (15), and the pressure plate (20) is located above the outer edge of the top plate (1).

7. A distributed photovoltaic grid connection and control device according to claim 5, characterized in that: Two wiring ports (12) are provided on each movable plate (4), and the two wiring ports (12) are symmetrically arranged on both sides of the second slide groove (18); a lower support plate (34) is fixedly provided at the lower end inside the wiring port (12), and the lower end of the lower airbag (13) is fixedly connected to the lower support plate (34); an upper support plate (33) is slidably provided at the upper end inside the wiring port (12) along the vertical direction, and the upper end of the upper airbag (14) is fixedly connected to the upper support plate (33).

8. A distributed photovoltaic grid connection and control device according to claim 7, characterized in that: Two square slides (28) are provided inside each movable plate (4). The two square slides (28) are symmetrically arranged on both sides of the second slide (18), and the two square slides (28) are located above the two wiring ports (12) respectively. The two square slides (28) are connected to the second slide (18). The bottom of each square slide (28) is connected to the wiring port (12) below through a vertical first connecting groove. An arc-shaped slide (31) is provided on the inner wall of the square slide (28) away from the second slide (18).

9. A distributed photovoltaic grid connection and control device according to claim 8, characterized in that: The adjustment mechanism includes a push rod (29), a lever (30), a lever (32), and an adjustment rod (35); a horizontal push rod (29) is provided inside each square slide groove (28), one end of the push rod (29) is fixedly connected to the second slider (19), and a lever (30) is fixedly provided at the end of the push rod (29) away from the second slider (19); a lever (32) is rotatably provided inside each square slide groove (28), and the lever (32) is close to the second slide groove (18). One end of the lever (32) is inclined downward and rotates to connect with the inner wall of the square groove (28). The end of the lever (32) away from the second groove (18) is inclined upward and slides to contact the arc groove (31). The swivel (30) slides to contact the lever (32). An adjusting rod (35) is slidably installed in the first connecting groove along the vertical direction. The upper end of the adjusting rod (35) slides to contact the middle of the lever (32), and the lower end of the adjusting rod (35) is fixedly connected to the upper support plate (33).

10. A distributed photovoltaic grid connection and control device according to claim 6, characterized in that: The driving mechanism includes a rotating rod (36), a turntable (37), an arc plate (38), a steering plate (39), a driving plate (40), a limiting plate (42), and a second spring (43). A third sliding groove (41) is provided inside the center of the upper end face of the top plate (1), and a second connecting groove is provided inside the center of the upper end face of the top plate (1). The lower end of the second connecting groove is connected to the interior of the third sliding groove (41). A limiting plate (42) is slidably provided inside the third sliding groove (41), and a second spring (43) is fixedly provided at the bottom end inside the third sliding groove (41). The upper end of the second spring (43) is in sliding contact with the lower end face of the limiting plate (42). A rotating rod (36) is rotatably inserted inside the second connecting groove, and the lower end of the rotating rod (36) is fixedly connected to the center of the upper end face of the limiting plate (42). A turntable (37) is fixedly sleeved on the outer side of the upper end of the rotating rod (36). An arc-shaped plate (38) is fixedly installed on the outer cylindrical surface of the turntable (37). The coverage angle of the arc plate (38) is 210°. The arc plate (38) is located above two or three pressure plates (20). A steering plate (39) is fixedly installed on the upper end of the turntable (37). A drive plate (40) is fixedly installed on the upper end of the steering plate (39). The horizontal cross section of the steering plate (39) is an isosceles triangle with two isosceles sides concave inward. The width of the steering plate (39) gradually decreases from the bottom end to the top end. The top surface of the drive plate (40) is convex. The degree of convexity of the top surface of the drive plate (40) gradually increases from the direction close to the tip of the steering plate (39) to the direction away from the tip of the steering plate (39).

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