A protective device for photovoltaic inverter

Abstract

The present invention discloses a protective device for a photovoltaic inverter, which relates to the technical field of inverters and comprises an inverter body. A display is fixedly mounted on the front side wall of the inverter body, and a plurality of heat dissipation holes are opened on the top surface of the inverter body. By providing a protective mechanism, a temperature sensor monitors the internal temperature of the inverter in real time. When the temperature exceeds a safety threshold, a heat dissipation system is automatically started to effectively prevent equipment damage caused by overheating. Meanwhile, a smoke sensor can detect internal flames or smoke in time, automatically start a fire extinguishing system, quickly isolate the fire source and release carbon dioxide, thereby minimizing the loss caused by the fire. In addition, the device also takes into account protection under adverse weather conditions. By providing a protective shell and a filter, it is ensured that rainwater and foreign matter will not invade the interior of the inverter, thereby further ensuring the stable operation and service life of the equipment, and significantly improving the safety and reliability of the photovoltaic inverter during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of inverters, and in particular to protective equipment for photovoltaic inverters. Background Art

[0002] Photovoltaic inverters are a vital component in solar power generation systems. They are responsible for converting the direct current generated by solar panels into alternating current that can be used by homes and industries. As the global demand for renewable energy continues to grow, the application of photovoltaic inverters is becoming more and more extensive, and their safety and reliability have become the focus of technological research and development.

[0003] In the prior art, the heat dissipation of photovoltaic inverters usually relies on natural cooling or passive heat dissipation systems. Although these systems can solve the heat dissipation problem to a certain extent, their heat dissipation effect often cannot meet the safe operation requirements of the equipment in high temperature environments, especially in direct sunlight or high ambient temperatures. In addition, the existing heat dissipation system is usually not combined with the internal temperature monitoring and automatic adjustment mechanism, which causes the electronic components inside the inverter to operate at high temperatures for a long time, accelerates aging, shortens the service life, and increases maintenance costs. In addition to the heat dissipation problem, the photovoltaic inverter may also face the risk of fire during operation. Due to electrical failure, overload or external environmental factors, a fire accident may occur inside the inverter. The existing protective measures often rely on external fire fighting systems for fire extinguishing. Once the fire spreads, even if it is finally extinguished, it may cause significant property losses and safety accidents. Therefore, a built-in fire extinguishing system that can respond quickly and effectively control the fire in the early stage of the fire is crucial to improving the safety of the photovoltaic inverter. In addition, photovoltaic inverters are usually installed in outdoor environments and face the invasion of rain, dust and other foreign matter. These foreign substances may not only cause problems such as short circuits and corrosion inside the inverter, but also block the heat dissipation holes, affecting the heat dissipation effect;

[0004] Therefore, based on the above search and in combination with the prior art, a protective device for a photovoltaic inverter is proposed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a protection device for a photovoltaic inverter to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A protective device for a photovoltaic inverter comprises an inverter body, a display is fixedly mounted on the front side wall of the inverter body, a plurality of heat dissipation holes are opened on the top surface of the inverter body, support plates are fixedly mounted on both sides of the top surface of the inverter body located at the plurality of heat dissipation holes, a smoke sensor is fixedly mounted on the inner wall of the inverter body, and a temperature sensor is fixedly mounted below the smoke sensor; a protective mechanism, the protective mechanism is arranged between two support plates, the protective mechanism comprises: a sealing plate, the sealing plate slides between the two support plates, a mounting groove is opened on the top surface of the inverter body located at the left side of the support plate, an electric push rod is fixedly mounted on the side wall of the mounting groove, a telescopic rod is arranged on the side wall of the mounting groove, a moving plate is slidably connected inside the mounting groove, the output end of the electric push rod and the telescopic ends of the two telescopic rods are connected to the side wall of the moving plate, a toothed belt is fixedly mounted on the side of the moving plate away from the electric push rod, and the protective mechanism also comprises a driving assembly and a fire extinguishing assembly; a heat sink, the heat sink is arranged inside the inverter body for dissipating heat inside the inverter body.

[0008] Preferably, the driving assembly includes: a fixed block, which is fixedly mounted on the top surface of the sealing plate, a first motor is fixedly mounted on the top surface of the fixed block, a rotating rod is rotatably connected to the bottom surface of the fixed block, the top surface of the rotating rod is connected to the output shaft of the first motor, a gear is fixedly mounted on the bottom surface of the rotating rod, the gear is located inside the mounting groove and meshes with the toothed belt, limiting grooves are provided on adjacent surfaces of the two support plates, and the driving assembly also includes a limiting member.

[0009] Preferably, the limiting member includes: two limiting rods, the two limiting rods are respectively located inside the two limiting grooves, the outer surfaces of the two limiting rods are sleeved with springs, the two limiting rods are sleeved with limiting blocks, the two limiting blocks slide on the two limiting grooves respectively, the adjacent surfaces of the two limiting blocks are respectively fixedly connected to the two sides of the sealing plate, one end of the spring is connected to the side wall of the limiting groove, and the other end is connected to the side wall of the limiting block.

[0010] Preferably, the fire extinguishing assembly includes: a storage box, which is fixedly mounted on the right side wall of the inverter body, a pipe is provided on the storage box, one end of the pipe is connected to the interior of the storage box, and the other end passes through the side wall of the inverter body and extends to the interior of the inverter body, a connecting block is fixedly mounted on the right side of the sealing plate, an iron block is provided on the side of the connecting block facing the sealing plate, a circular groove is opened on the side wall of the sealing plate facing the iron block, and an electromagnet is fixedly mounted inside the circular groove.

[0011] Preferably, the fire extinguishing assembly also includes: a pressure plate, which is slidably mounted on the bottom surface of the storage box, a rope is provided on the pressure plate, one end of the rope is connected to the top surface of the pressure plate, and the other end is connected to the side wall of the iron block, a sealing ring is fixedly installed at the top surface of the storage box where the rope passes through, a film is provided at the connection between the pipeline and the storage box, a film-breaking rod is fixedly installed on the top surface of the pressure plate, and the film-breaking rod and the film are on the same horizontal line.

[0012] Preferably, the heat sink includes: a mounting plate, which is fixedly mounted on the top surface inside the inverter body, connecting plates are fixedly mounted on both ends of the bottom surface of the mounting plate, round rods are rotatably connected on adjacent surfaces of the two connecting plates, a cooling fan is fixedly mounted between the two round rods, a second motor is fixedly mounted on the side wall of one of the connecting plates, and the output shaft of the second motor is connected to one side of one of the round rods.

[0013] Preferably, the heat sink further comprises: a baffle, wherein the baffle is fixedly mounted on the side wall of one of the support plates, and a button is provided on a side of the baffle facing the sealing plate.

[0014] Preferably, a protective shell is fixedly mounted on the top surface of the two support plates, and a filter is fixedly mounted on the top surface of the inverter body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, by providing a protection mechanism, the temperature sensor monitors the internal temperature of the inverter in real time. When the temperature exceeds the safety threshold, the heat dissipation system is automatically started to effectively prevent equipment damage caused by overheating. At the same time, the smoke sensor can detect internal flames or smoke in time, automatically start the fire extinguishing system, quickly isolate the fire source and release carbon dioxide, and minimize the losses caused by the fire. In addition, the equipment also takes into account protection under severe weather conditions. By providing a protective shell and a filter, it is ensured that rainwater and foreign objects will not invade the interior of the inverter, further ensuring the stable operation and service life of the equipment, and significantly improving the safety and reliability of the photovoltaic inverter during operation;

[0017] 2. In the present invention, by providing a heat sink, the opening and closing of the heat dissipation holes can be automatically adjusted according to the internal temperature changes. Combined with the forced convection of the heat dissipation fan, the discharge of hot air is accelerated, thereby improving the heat dissipation efficiency. Compared with the traditional passive heat dissipation, this active heat dissipation method can more effectively control the temperature inside the inverter, avoid aging, performance degradation or failure of electronic components caused by excessive temperature, and maintain the temperature inside the inverter within an appropriate range. The service life of the equipment can be significantly extended, the maintenance cost can be reduced, and the economic benefits of the system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure on the right side of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the separation structure of the protective shell and the inverter body of the present invention;

[0021] Figure 4 This is a schematic diagram of the sealing structure of the protection mechanism of the present invention;

[0022] Figure 5 This is a bottom view of the structure of the sealing plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the storage box of the present invention;

[0024] Figure 7 It is a schematic diagram of the overall structure of the heat sink of the present invention;

[0025] Figure 8 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0026] Fig. 9 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0027] Fig.10 For the present invention Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0028] In the figure: 1. inverter body; 2. display; 3. heat dissipation hole; 4. support plate; 5. sealing plate; 6. mounting groove; 7. electric push rod; 8. telescopic rod; 9. moving plate; 10. toothed belt; 11. fixed block; 12. first motor; 13. rotating rod; 14. gear; 15. limit groove; 16. limit rod; 17. spring; 18. limit block; 19. storage box; 20. pipeline; 21. connecting block; 22. iron block; 23. round groove; 24. electromagnet; 25. pressure plate; 26. rope; 27. sealing ring; 28. film; 29. ​​membrane breaking rod; 30. mounting plate; 31. connecting plate; 32. round rod; 33. cooling fan; 34. second motor; 35. baffle; 36. button; 37. smoke sensor; 38. temperature sensor; 39. protective shell; 40. filter. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In a typical implementation of this application, please refer to Figures 1 to 10 As shown, a protective device for a photovoltaic inverter includes:

[0031] An inverter body 1, a display 2 is fixedly mounted on the front side wall of the inverter body 1, a plurality of heat dissipation holes 3 are opened on the top surface of the inverter body 1, a support plate 4 is fixedly mounted on both sides of the plurality of heat dissipation holes 3 on the top surface of the inverter body 1, a smoke sensor 37 is fixedly mounted on the inner wall of the inverter body 1, and a temperature sensor 38 is fixedly mounted below the smoke sensor 37;

[0032] A protection mechanism, which is arranged between two support plates 4, and includes: a sealing plate 5, which slides between the two support plates 4, a mounting groove 6 is provided on the top surface of the inverter body 1 located on the left side of the support plate 4, an electric push rod 7 is fixedly installed on the side wall of the mounting groove 6, a telescopic rod 8 is provided on the side wall of the mounting groove 6, a moving plate 9 is slidably connected inside the mounting groove 6, the output end of the electric push rod 7 and the telescopic ends of the two telescopic rods 8 are connected to the side wall of the moving plate 9, a toothed belt 10 is fixedly installed on the side of the moving plate 9 away from the electric push rod 7, and the protection mechanism also includes a driving component and a fire extinguishing component;

[0033] The heat sink is arranged inside the inverter body 1 to dissipate heat inside the inverter body 1 .

[0034] As a preferred implementation in this embodiment, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10As shown, the driving assembly includes: a fixed block 11, the fixed block 11 is fixedly mounted on the top surface of the sealing plate 5, the top surface of the fixed block 11 is fixedly mounted with a first motor 12, the bottom surface of the fixed block 11 is rotatably connected with a rotating rod 13, the top surface of the rotating rod 13 is connected to the output shaft of the first motor 12, the bottom surface of the rotating rod 13 is fixedly mounted with a gear 14, the gear 14 is located inside the mounting groove 6 and meshes with the toothed belt 10, and the adjacent surfaces of the two support plates 4 are provided with limiting grooves 15, and the driving assembly It also includes a limiting member, which includes: two limiting rods 16, the two limiting rods 16 are respectively located inside the two limiting grooves 15, the outer surfaces of the two limiting rods 16 are sleeved with springs 17, the two limiting rods 16 are sleeved with limiting blocks 18, the two limiting blocks 18 slide on the two limiting grooves 15 respectively, the adjacent surfaces of the two limiting blocks 18 are respectively fixedly connected to the two sides of the sealing plate 5, one end of the spring 17 is connected to the side wall of the limiting groove 15, and the other end is connected to the side wall of the limiting block 18;

[0035] Through the above-mentioned features, the sealing plate 5 can seal or open the heat dissipation hole 3 according to the signal of the temperature sensor 38, and can also prevent the sealing plate 5 from deviating from the predetermined track. Specifically, the temperature sensor 38 senses the temperature inside the inverter body 1. When the temperature is too high or too low, the temperature sensor 38 will turn on the first motor 12 to rotate the rotating rod 13 connected to the output shaft of the first motor 12. When the rotating rod 13 rotates, the gear 14 will rotate synchronously, so that the gear 14 moves on the toothed belt 10, and the sealing plate 5 is pushed to cancel or open the sealing of the heat dissipation hole 3. When the sealing plate 5 moves, the limit blocks 18 on both sides will be driven to move on the limit groove 15 to prevent the sealing plate 5 from deviating from the predetermined track, and when the sealing plate 5 cancels the sealing of the heat dissipation hole 3, the two limit blocks 18 will squeeze the spring 17 to put the spring 17 in a contracted state.

[0036] As a preferred implementation in this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Fig. 9 and Fig.10As shown, the fire extinguishing assembly includes: a storage box 19, which is fixedly mounted on the right side wall of the inverter body 1, and a pipe 20 is arranged on the storage box 19, one end of the pipe 20 is connected to the inside of the storage box 19, and the other end of the pipe 20 passes through the side wall of the inverter body 1 and extends to the inside of the inverter body 1, a connecting block 21 is fixedly mounted on the right side of the sealing plate 5, an iron block 22 is arranged on the side wall of the sealing plate 5 facing the iron block 22, and a circular groove 23 is opened on the side wall of the sealing plate 5 facing the iron block 22, and the inside of the circular groove 23 is fixedly mounted The electromagnet 24 is installed, and the fire extinguishing assembly also includes: a pressure plate 25, which is slidably mounted on the bottom surface of the storage box 19, and a rope 26 is arranged on the pressure plate 25, one end of the rope 26 is connected to the top surface of the pressure plate 25, and the other end is connected to the side wall of the iron block 22, and the rope 26 passes through the top surface of the storage box 19, and a sealing ring 27 is fixedly installed, and a film 28 is arranged at the connection point between the pipeline 20 and the storage box 19, and a film breaking rod 29 is fixedly installed on the top surface of the pressure plate 25, and the film breaking rod 29 and the film 28 are on the same horizontal line;

[0037] Through the above features, the heat dissipation hole 3 can be quickly sealed when a fire occurs inside the inverter body 1, and carbon dioxide can be injected into the interior of the inverter body 1 to extinguish the fire. Specifically, when the smoke sensor 37 senses that fireworks are generated inside, the electromagnet 24 will be energized to adsorb the iron block 22 and the electromagnet 24. When fireworks are generated inside, the internal temperature of the inverter body 1 is too high, the sealing plate 5 will be in a state of canceling the sealing of the heat dissipation hole 3, and the two limit blocks 18 will squeeze the spring 17 to make the spring 17 in a compressed state. At this time, the electric push rod 7 will move The movable plate 9 contracts so that the toothed belt 10 and the gear 14 are no longer meshed. At this time, the sealing plate 5 will be quickly closed due to the resilience of the two springs 17, preventing the flame from spreading to the outside through the heat dissipation holes 3 and causing a greater impact. While the sealing plate 5 is quickly sealed, the rope 26 will be driven to make the pressure plate 25 rise, and the film-breaking rod 29 will pierce the film 28, so that the carbon dioxide inside the storage box 19 is injected into the inverter body 1 through the pipeline 20 to extinguish the fire, and the sealing ring 27 can prevent the rope 26 from causing the carbon dioxide inside the storage box 19 to leak during the pulling process.

[0038] As a preferred implementation in this embodiment, please refer to Figure 2 and Figure 7As shown, the heat sink includes: a mounting plate 30, the mounting plate 30 is fixedly mounted on the top surface inside the inverter body 1, connecting plates 31 are fixedly mounted on both ends of the bottom surface of the mounting plate 30, round rods 32 are rotatably connected on the adjacent surfaces of the two connecting plates 31, a cooling fan 33 is fixedly mounted between the two round rods 32, a second motor 34 is fixedly mounted on the side wall of one of the connecting plates 31, and the output shaft of the second motor 34 is connected to one side of one of the round rods 32, and the heat sink also includes: a baffle 35, the baffle 35 is fixedly mounted on the side wall of one of the support plates 4, and a button 36 is provided on the side of the baffle 35 facing the sealing plate 5;

[0039] Through the above-mentioned features, the interior of the inverter body 1 can be cooled. When the temperature sensor 38 senses that the temperature inside the inverter body 1 is too high, the sealing plate 5 will cancel the sealing of the heat dissipation hole 3. At this time, the right side wall of the sealing plate 5 will squeeze the button 36, so that the cooling fan 33 and the second motor 34 are started, accelerating the outflow of hot air from the inside of the inverter body 1. When the second motor 34 is started, it will drive the cooling fan 33 to rotate, so that it can dissipate heat comprehensively.

[0040] As a preferred implementation in this embodiment, please refer to Figure 1 , Figure 2 and Figure 3 As shown, a protective shell 39 is fixedly installed on the top surface of the two support plates 4, and a filter 40 is fixedly installed on the top surface of the inverter body 1. The protective shell 39 prevents rainwater and the like from flowing into the interior of the inverter body 1 when the heat dissipation hole 3 is opened, causing damage to the inverter body 1, and the filter 40 can prevent foreign matter such as dust and the like from entering the interior of the inverter body 1 when the heat dissipation hole 3 is opened.

[0041] Working principle:

[0042] When in use, the temperature sensor 38 in the inverter body 1 monitors the internal temperature in real time. When the temperature exceeds a preset threshold, the temperature sensor 38 sends a signal to the control system to activate the first motor 12. The first motor 12 pushes the sealing plate 5 to slide along the support plate 4 through the meshing relationship between the rotating rod 13 and the gear 14 and the toothed belt 10, thereby opening the heat dissipation hole 3 to allow hot air to flow out to reduce the internal temperature. At the same time, the button 36 is triggered to start the second motor 34, driving the cooling fan 33 to rotate, accelerating air circulation and improving heat dissipation efficiency. When the smoke sensor 37 detects internal smoke or flames, the electromagnet 24 is energized to attract the iron block 22. Since the sealing plate 5 is at high temperature, It is in the open state, and the spring 17 is in the compressed state. At this time, the electric push rod 7 contracts, so that the toothed belt 10 is out of mesh with the gear 14, and the spring 17 releases energy to quickly close the sealing plate 5 to prevent the flame from spreading through the heat dissipation hole 3. At the same time, the rope 26 pulls the pressure plate 25 up, and the film-breaking rod 29 pierces the film 28. The carbon dioxide in the storage box 19 is released into the inverter body 1 through the pipeline 20 to extinguish the fire. The protective shell 39 is installed on the top of the support plate 4 to prevent rainwater and other liquids from entering the inverter body 1 when the heat dissipation hole 3 is opened, causing damage. The filter 40 is located on the left side of the heat dissipation hole 3 to prevent dust and other foreign matter from entering the inverter to ensure the normal operation of the equipment.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A protective device for a photovoltaic inverter, characterized in that: include: An inverter body (1), a display (2) being fixedly mounted on the front side wall of the inverter body (1), a plurality of heat dissipation holes (3) being provided on the left side of the top surface of the inverter body (1), support plates (4) being fixedly mounted on both the front and rear sides of the top surface of the inverter body (1), a smoke sensor (37) being fixedly mounted on the inner wall of the inverter body (1), and a temperature sensor (38) being fixedly mounted below the smoke sensor (37); A protection mechanism, the protection mechanism is arranged between the two support plates (4), the protection mechanism comprises a sealing plate (5), the sealing plate (5) slides between the two support plates (4), a mounting groove (6) is provided on the right side of the top surface of the inverter body (1), an electric push rod (7) is fixedly installed on the side wall of the mounting groove (6), a telescopic rod (8) is provided on the side wall of the mounting groove (6), a movable plate (9) is slidably connected inside the mounting groove (6), the output end of the electric push rod (7) and the telescopic ends of the two telescopic rods (8) are connected to the side wall of the movable plate (9), a toothed belt (10) is fixedly installed on the side of the movable plate (9) away from the electric push rod (7), and the sealing plate is used to seal or open the heat dissipation hole according to the signal of the temperature sensor; The photovoltaic inverter protection device further comprises a fire extinguishing component and a heat sink, wherein the heat sink is arranged inside the inverter body (1) and is used to dissipate heat inside the inverter body (1); The protection mechanism further comprises a driving assembly, the driving assembly comprising a fixed block (11), the fixed block (11) being fixedly mounted on the top surface of the sealing plate (5), the top surface of the fixed block (11) being fixedly mounted with a first motor (12), the bottom surface of the fixed block (11) being rotatably connected with a rotating rod (13), the top surface of the rotating rod (13) being connected to an output shaft of the first motor (12), the bottom surface of the rotating rod (13) being fixedly mounted with a gear (14), the gear (14) being located inside the mounting groove (6) and meshing with the toothed belt (10), and limiting grooves (15) being provided on adjacent surfaces of the two support plates (4), and the driving assembly further comprises a limiting member; The limiting member comprises two limiting rods (16), the two limiting rods (16) are respectively located inside the two limiting grooves (15), the outer surfaces of the two limiting rods (16) are sleeved with springs (17), the two limiting rods (16) are sleeved with limiting blocks (18), the two limiting blocks (18) slide on the two limiting grooves (15), the adjacent surfaces of the two limiting blocks (18) are respectively fixedly connected to the two sides of the sealing plate (5), one end of the spring (17) is connected to the right side wall of the limiting groove (15), and the other end is connected to the side wall of the limiting block (18); The fire extinguishing assembly comprises: a storage box (19), wherein carbon dioxide is stored inside the storage box (19), the storage box (19) is fixedly mounted on the right side wall of the inverter body (1), a pipe (20) is arranged on the storage box (19), one end of the pipe (20) is in communication with the interior of the storage box (19), and the other end of the pipe (20) penetrates the side wall of the inverter body (1) and extends to the interior of the inverter body (1), a connecting block (21) is arranged on the right side of the sealing plate (5), an iron block (22) is arranged on the side of the connecting block (21) facing the sealing plate (5), a circular groove (23) is provided on the side wall of the sealing plate (5) facing the iron block (22), and an electromagnet (24) is fixedly mounted inside the circular groove (23); A pressure plate (25) is slidably mounted on the bottom surface of the storage box (19). A rope (26) is provided on the pressure plate (25). One end of the rope (26) is connected to the top surface of the pressure plate (25), and the other end is connected to the side wall of the iron block (22). A sealing ring (27) is fixedly mounted on the top surface of the storage box (19) where the rope (26) passes through. A film (28) is provided at the connection between the pipeline (20) and the storage box (19). A film-breaking rod (29) is fixedly mounted on the top surface of the pressure plate (25). The film-breaking rod (29) and the film (28) are on the same vertical line.

2. A photovoltaic inverter protection device according to claim 1, characterized in that: Heat sink includes: A mounting plate (30) is fixedly mounted on the top surface inside the inverter body (1); connecting plates (31) are fixedly mounted on both ends of the bottom surface of the mounting plate (30); round rods (32) are rotatably connected on adjacent surfaces of the two connecting plates (31); a cooling fan (33) is fixedly mounted between the two round rods (32); a second motor (34) is fixedly mounted on the side wall of one of the connecting plates (31); and an output shaft of the second motor (34) is connected to one side of one of the round rods (32).

3. A photovoltaic inverter protection device according to claim 2, characterized in that: The heat sink also includes: A baffle (35), the baffle (35) being fixedly mounted on a side wall of one of the support plates (4), and a button (36) being provided on a side of the baffle (35) facing the sealing plate (5).

4. The photovoltaic inverter protection device according to claim 1, characterized in that: A protective shell (39) is fixedly mounted on the top surfaces of the two support plates (4), and a filter screen (40) is fixedly mounted on the top surface of the inverter body (1).

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