Photovoltaic inverter for solar photovoltaic module

Abstract

The invention provides a photovoltaic inverter for a solar photovoltaic module, and belongs to the field of photovoltaic inverters. Comprising a shell, a mounting seat is fixedly connected to the inner surface of the shell, a power module and a control module are fixedly connected to the outer surface of the mounting seat, ventilation grooves are symmetrically formed in the outer surface of the shell, and a dehumidification assembly is arranged on the inner side of the shell and comprises a partition plate fixedly connected with the lower end of the inner surface of the shell; a supporting plate is fixedly connected to the outer surface of the partition plate, a notch is formed in the outer surface of the upper end of the supporting plate, and a baffle is fixedly connected to the inner surface of the shell. Through the arrangement of the moisture removal assembly, air can be in full contact with the moisture absorption plate after entering the shell, moisture in the air can be effectively absorbed, the probability that condensation is formed in the inverter is reduced, the stability and safety of the inverter in the working process can be improved, and meanwhile the service life of the inverter can be effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic inverters, and more particularly to a photovoltaic inverter for a solar photovoltaic module. Background Art

[0002] Photovoltaic inverters are key equipment in photovoltaic power generation systems. They are used to convert the direct current generated by solar panels into alternating current that can be used in homes or industries. They involve the conversion of electrical energy and also include the adjustment of voltage and current to ensure that the output power meets household, commercial or industrial use. Since photovoltaic inverters are usually installed outdoors, they must have good environmental adaptability.

[0003] For example, Chinese patent CN111969863B discloses a photovoltaic inverter for solar photovoltaic modules. The device can provide a load-bearing structure to protect the inverter body, facilitate movement, and provide a certain degree of shock absorption during use to avoid damage to internal electrical components. At the same time, the heat dissipation protection structure uses the rotation of the fan to cool the internal electrical components, thereby improving the working stability of the inverter.

[0004] In the prior art, in order to improve the working stability of the solar photovoltaic inverter, air cooling is usually used to ventilate and dissipate heat from the photovoltaic inverter. In coastal areas, due to the special high temperature and high humidity environment, the moisture content in the air is high. Therefore, when the air is sucked into the photovoltaic inverter through the fan, due to the large temperature difference between the inside and outside of the inverter during the alternation of day and night, the air condenses into dew drops on the surface of the electrical components inside the inverter. When the moisture adheres to the surface of the insulating material inside the inverter, its insulation performance will be reduced. At the same time, the moisture will bridge adjacent conductive parts to increase the risk of short circuit, and the moisture will corrode the metal components inside the inverter, thereby affecting the service life of the inverter. Summary of the invention

[0005] In view of the problem in the prior art that moisture in the air enters the interior of the inverter to form condensation, an object of the present invention is to provide a photovoltaic inverter for a solar photovoltaic module.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A photovoltaic inverter for a solar photovoltaic assembly comprises a housing, a mounting seat is fixedly connected to the inner surface of the housing, a power module and a control module are fixedly connected to the outer surface of the mounting seat, ventilation slots are symmetrically provided on the outer surface of the housing, and a dehumidification assembly is provided inside the housing;

[0008] The dehumidification component includes a partition fixedly connected to the lower end of the inner surface of the shell, a support plate fixedly connected to the outer surface of the partition, a groove is formed on the outer surface of the upper end of the support plate, a baffle plate fixedly connected to the inner surface of the shell, a movable rod fixedly connected between the baffle plate and the inner surface of the shell, a moisture absorption plate rotatably connected to the outer surface of the movable rod, the moisture absorption plate is in sliding contact with the outer surface of the rear end of the baffle, and elastic plates are symmetrically fixedly connected to the outer surface of the moisture absorption plate, and the outer surfaces of the two groups of elastic plates are in close contact with the outer surface of the partition.

[0009] Optionally, the moisture absorption plate is inclined upward away from one end of the movable rod and the upper end is attached to the inner wall of the shell. The moisture absorption plate and the movable rod are both in two groups and are symmetrically distributed on the left and right sides of the partition. The elastic plate is arc-shaped. The mounting seats are in two groups and are distributed in parallel up and down. A cover body is hinged on the front side of the outer surface of the shell, and a sealing gasket is fixedly connected to the outer surface of the front end of the shell.

[0010] Optionally, a sealing assembly is provided on the inner side of the shell, and the sealing assembly includes a second slide groove opened on the inner side of the shell, the second slide groove penetrates to the inner side of the ventilation groove, a sealing plate is slidably connected to the inner surface of the second slide groove, and a first slide groove is embedded on the inner side of the shell, the first slide groove is located on the upper side of the second slide groove and is connected to the inside of the second slide groove.

[0011] Optionally, the upper end outer surface of the sealing plate is fixedly connected to a first movable plate, the first movable plate is located inside the first slide groove and is slidably connected to the inner surface of the first slide groove, the inner surface of the first slide groove is fixedly connected to a fixed plate, the upper end outer surface of the fixed plate is fixedly connected to an airbag, the airbag is filled with hot expansion gas, the upper end outer surface of the airbag is fixedly connected to a second movable plate, the lower end outer surface of the second movable plate is fixedly connected to a pull rod, and the lower end of the pull rod is fixedly connected to the first movable plate.

[0012] Optionally, a swinging assembly is provided on the lower side of the moisture absorption plate, and the swinging assembly includes a movable groove opened on the inner surface of the shell, and the movable groove penetrates to the inner side of the second slide groove, and the outer surface of the lower end of the sealing plate is fixedly connected with a top block, and the top block penetrates into the interior of the shell through the movable groove and is in sliding contact with the movable groove, and the outer surface of the top block is in sliding contact with the outer surface of the lower end of the moisture absorption plate, and the outer surface of the lower end of the support plate is fixedly connected with a traction bar, and the lower end of the traction bar is fixedly connected with a collision block.

[0013] Optionally, a ventilation component is provided on the upper side of the shell, and the ventilation component includes a fixed sleeve fixedly connected to the outer surface of the upper end of the shell, a top cover is fixedly connected to the outer surface of the upper end of the fixed sleeve, and a ventilation groove is opened on the upper side of the outer surface of the fixed sleeve. The number of the ventilation grooves is several groups and distributed in a ring array, and a cover body is symmetrically fixedly connected to the outer surface of the shell, and the cover body is located on the upper side of the ventilation groove.

[0014] Optionally, a through hole is provided on the outer surface of the lower end of the fixed sleeve, a motor is fixedly connected to the outer surface of the lower end of the top cover, a rotating shaft is fixedly connected to the lower end of the motor output shaft, a paddle is fixedly connected to the outer surface of the rotating shaft, and a contact switch is fixedly connected to the outer surface of the lower end of the shell, and the contact switch is located on the lower side of the top block.

[0015] Optionally, a circulation component is provided on the inner side of the shell, and the circulation component includes a second liquid storage cavity opened on the inner side of the shell, and the number of the second liquid storage cavities is several groups and distributed in parallel up and down, and heat sinks are fixedly connected to the left and right ends of the outer surface of the shell, and the number of the heat sinks is several groups and distributed in a linear array.

[0016] Optionally, a first liquid storage cavity is embedded on the inner side of the heat sink, the upper and lower ends of the first liquid storage cavity are connected to the second liquid storage cavity, the first liquid storage cavity and the second liquid storage cavity are filled with an appropriate amount of coolant, and a second overflow groove and a first overflow groove are embedded on the upper end of the shell, and the lower end of the first overflow groove is connected to the inside of the second liquid storage cavity.

[0017] Optionally, a guide groove is embedded on the inner side of the shell, the upper end of the guide groove is connected to the inside of the second liquid storage chamber, the inner surface of the guide groove is slidably connected with a sealing sleeve, the outer surface of the lower end of the sealing sleeve is fixedly connected with a push rod, the lower end of the push rod is fixedly connected to the outer surface of the upper end of the second movable plate, the lower side of the inner surface of the guide groove is fixedly connected with a sealing ring, and the inner surface of the sealing ring is slidably connected to the outer surface of the push rod.

[0018] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0019] In the above scheme, by setting up a dehumidification component, the air will fully contact with the desiccant plate after entering the shell, and the water absorption capacity of the desiccant plate can be fully utilized to effectively absorb the moisture in the air, thereby effectively reducing the probability of moisture adhering to the surface of the electrical components inside the inverter to form condensation, which can not only improve the stability and safety of the inverter during operation, but also effectively extend the service life of the inverter.

[0020] By setting up a sealing component, gas can enter the shell through the ventilation grooves, thereby cooling the electrical components inside the inverter, thereby reducing the probability of the inverter failing due to overtemperature. The ventilation grooves can be opened and closed according to the temperature changes inside the inverter, so that the temperature inside the inverter can be flexibly adjusted to maintain the operating temperature of the inverter within an appropriate range. At the same time, the sealing plate can seal the ventilation grooves, thereby further reducing the probability of moisture entering the shell.

[0021] By setting up a swinging component, the reciprocating swing of the moisture absorbing plate and the contact with the collision block can accelerate the shaking off of the dust on the surface of the moisture absorbing plate, thereby reducing the probability of dust clogging the mesh holes on the surface of the moisture absorbing plate. It not only ensures the water absorption effect of the moisture absorbing plate, but also enables the moisture absorbing plate to maintain good permeability, and can reduce the workload of cleaning the moisture absorbing plate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 It is a top view of the overall structure of the present invention;

[0025] Figure 3 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 4 For the present invention Figure 2 Middle AA section view;

[0027] Figure 5 For the present invention Figure 2 Middle BB section view;

[0028] Figure 6 For the present invention Figure 2 Cross-sectional view of the structure in the CC direction;

[0029] Figure 7 For the present invention Figure 4 The enlarged schematic diagram at D in the middle;

[0030] Figure 8 For the present invention Figure 4 The enlarged schematic diagram at E in the middle;

[0031] Fig. 9 For the present invention Figure 4 The enlarged schematic diagram at F in the middle;

[0032] Fig.10 For the present invention Figure 5 Enlarged schematic diagram at point G in the middle.

[0033] [Reference Signs]

[0034] 11. Shell; 12. Cover; 13. Ventilation slot; 14. Sealing pad; 15. Power module; 16. Control module; 17. Partition; 18. Baffle; 19. Support plate; 20. Notch; 21. Cover; 22. Top cover; 23. Fixed sleeve; 24. Ventilation slot; 25. Heat sink; 26. First slide slot; 27. Fixed plate; 28. First movable plate; 29. ​​Sealing plate; 30. Second slide slot; 31. Top block; 32. Movable slot; 33. Movable rod; 34, moisture absorption plate; 35, pull rod; 36, airbag; 37, second movable plate; 38, first liquid storage chamber; 39, second liquid storage chamber; 40, guide groove; 41, sealing sleeve; 42, push rod; 43, sealing ring; 44, first overflow groove; 45, second overflow groove; 47, motor; 48, rotating shaft; 49, paddle; 50, through hole; 51, mounting seat; 52, collision block; 53, elastic plate; 54, traction strip; 55, contact switch.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0040] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0041] like Figures 1 to 10 As shown, an embodiment of the present invention provides a photovoltaic inverter for a solar photovoltaic module, including a shell 11, a mounting seat 51 is fixedly connected to the inner surface of the shell 11, a power module 15 and a control module 16 are fixedly connected to the outer surface of the mounting seat 51, ventilation grooves 13 are symmetrically opened on the outer surface of the shell 11, and a dehumidification component is arranged on the inner side of the shell 11.

[0042] The dehumidification assembly includes a partition 17 fixedly connected to the lower end of the inner surface of the shell 11, a support plate 19 fixedly connected to the outer surface of the partition 17, a slot 20 is provided on the outer surface of the upper end of the support plate 19, a baffle 18 fixedly connected to the inner surface of the shell 11, a movable rod 33 fixedly connected between the baffle 18 and the inner surface of the shell 11, a moisture absorption plate 34 is rotatably connected to the outer surface of the movable rod 33, the moisture absorption plate 34 is in sliding contact with the outer surface of the rear end of the baffle 18, and the outer surface of the moisture absorption plate 34 is symmetrically fixedly connected to the elastic plate 53, and the outer surfaces of the two groups of elastic plates 53 are in close contact with the outer surface of the partition 17.

[0043] The moisture absorption plate 34 is tilted upward at one end away from the movable rod 33 and the upper end is attached to the inner wall of the shell 11. The moisture absorption plate 34 and the movable rod 33 are both in two groups and are symmetrically distributed on the left and right sides of the partition 17. The elastic plate 53 is arc-shaped. The mounting seats 51 are in two groups and are distributed in parallel up and down. The cover body 21 is hinged on the front side of the outer surface of the shell 11, and the sealing gasket 14 is fixedly connected to the outer surface of the front end of the shell 11.

[0044] By adopting the above technical solution, the cover 21 hinged on the front side of the inverter housing 11 can close and seal the matching housing 11, and the sealing gasket 14 on the front side of the housing 11 can effectively seal between the housing 11 and the cover 21, thereby effectively improving the sealing between the housing 11 and the cover 21. Due to the high temperature, high humidity and salt fog environment unique to coastal areas, when the inverter is ventilated and heats up, moisture in the air will enter the interior of the inverter and form condensation on the surface of the electrical components. In a high-pressure environment, the water droplets formed by the condensation may bridge adjacent conductive parts. The dehumidification component is set for this purpose. When the inverter is ventilated and heat dissipated during operation, the external air enters the shell 11 through the ventilation slot 13. The horizontal height of the support plate 19 is higher than the upper side of the ventilation slot 13. The partition plate 17 on the inner wall of the shell 11 cooperates with the support plate 19 and the baffle plate 18 to form a closed space. The moisture absorption plate 34 is located inside the closed space. After the air enters the shell 11, it diffuses from the notch 20 on the upper surface of the support plate 19 to the inner wall of the shell 11 to cool the control module 16 and the power module 15. The shell 11 cools the control module 16 and the power module 15 through the mounting seat 51. The control module 16, the power module 15 and other supporting electrical components are fixedly installed, the housing 11 and the baffle 18 fixedly support the movable rod 33, and the movable rod 33 rotatably supports the moisture absorption plate 34 so that the moisture absorption plate 34 can rotate with the movable rod 33 as a fulcrum. The moisture absorption plate 34 is inclined and its upper end will lean against the inner wall of the housing 11 under the action of gravity. The surface of the moisture absorption plate 34 is provided with dense mesh holes so that the air will fully contact with the moisture absorption plate 34 after entering the interior of the housing 11, and the moisture in the air is effectively absorbed by the moisture absorption plate 34. The moisture absorption plate 34 is made of silica gel. The mesh structure allows air to pass through the surface of the moisture absorbing plate 34. The elastic plates 53 on the upper and lower surfaces of the moisture absorbing plate 34 will respectively maintain a close fit with the partition 17 and the inner surface of the shell 11 under the action of their own elastic force, thereby improving the sealing between the moisture absorbing plate and the partition 17 and the shell 11, thereby reducing the probability of air passing through between the moisture absorbing plate 34 and the shell 11, and further effectively improving the moisture absorption effect of the moisture absorbing plate 34 on the moisture in the air, reducing the probability of condensation forming inside the inverter, thereby improving the stability and safety of the inverter during operation.

[0045] like Figure 1 , Figure 4 , Figure 5 and Fig. 9 As shown, a sealing assembly is provided on the inner side of the shell 11, and the sealing assembly includes a second slide groove 30 opened on the inner side of the shell 11, the second slide groove 30 penetrates to the inner side of the ventilation groove 13, and the inner surface of the second slide groove 30 is slidably connected with a sealing plate 29, and a first slide groove 26 is embedded on the inner side of the shell 11, and the first slide groove 26 is located on the upper side of the second slide groove 30 and is connected with the inside of the second slide groove 30.

[0046] The upper outer surface of the sealing plate 29 is fixedly connected to a first movable plate 28, the first movable plate 28 is located inside the first slide groove 26 and is slidably connected to the inner surface of the first slide groove 26, the inner surface of the first slide groove 26 is fixedly connected to a fixed plate 27, the upper outer surface of the fixed plate 27 is fixedly connected to an airbag 36, the airbag 36 is filled with thermal expansion gas, the upper outer surface of the airbag 36 is fixedly connected to a second movable plate 37, the lower outer surface of the second movable plate 37 is fixedly connected to a pull rod 35, and the lower end of the pull rod 35 is fixedly connected to the first movable plate 28.

[0047] By adopting the above technical solution, the first slide groove 26 inside the shell 11 supports the airbag 36 through the fixed plate 27. When the temperature inside the inverter is low, the gas inside the airbag 36 is in a contracted state. At this time, the second movable plate 37 at the upper end of the airbag 36 is in the lowest position. The second movable plate 37 pulls and supports the first movable plate 28 through the pull rod 35, and fixes and supports the sealing plate 29 through the first movable plate 28. The second movable plate 37 drives the first movable plate 28 to be in the lowest position. At this time, the sealing plate 29 will be inside the second slide groove 30, and the ventilation groove 13 on the surface of the shell 11 will be sealed by the sealing plate 29, so as to prevent external gas from entering the shell 11. When the internal temperature of the inverter gradually increases during operation, the heat will gradually be transferred to the inside of the airbag 36. At this time, the heat-expanding gas inside the airbag 36 expands due to the heat. Under the action of the gas pressure, the volume of the airbag 36 gradually increases. At this time, the airbag 36 drives the first movable plate 28 to be in the lowest position. The plate 28 moves upward along the first slide groove 26, and the first movable plate 28 drives the second movable plate 37 to move upward synchronously through the pull rod 35, thereby driving the sealing plate 29 to lift upward through the first movable plate 28. After the sealing plate 29 slides out from the ventilation groove 13, external air can enter the shell 11 through the ventilation groove 13, thereby cooling the electrical components inside the inverter, thereby reducing the probability of the inverter failing due to overtemperature. The position of the sealing plate 29 is adjusted according to the temperature change inside the shell 11, so that the ventilation groove 13 can be opened and closed, so that the temperature inside the shell 11 can be flexibly adjusted, and the operating temperature of the inverter can be maintained within an appropriate range, thereby effectively improving the working stability of the inverter. At the same time, in rainy and snowy weather with low temperature, the sealing plate 29 can seal the ventilation groove 13, thereby further reducing the probability of moisture entering the shell 11.

[0048] like Figure 4 , Figure 7 and Fig. 9As shown, a swing assembly is provided on the lower side of the moisture absorption plate 34, and the swing assembly includes a movable groove 32 opened on the inner surface of the shell 11, and the movable groove 32 penetrates to the inner side of the second slide groove 30. The outer surface of the lower end of the sealing plate 29 is fixedly connected to a top block 31, and the top block 31 penetrates to the inside of the shell 11 through the movable groove 32 and is in sliding contact with the movable groove 32. The outer surface of the top block 31 is in sliding contact with the outer surface of the lower end of the moisture absorption plate 34, and the outer surface of the lower end of the support plate 19 is fixedly connected to a traction bar 54, and the lower end of the traction bar 54 is fixedly connected to a collision block 52.

[0049] By adopting the above technical solution, when the moisture absorbing plate 34 absorbs moisture in the air, dust in the air will adhere to the surface of the moisture absorbing plate 34 and clog the mesh holes on the surface, which will not only affect the moisture absorption effect of the moisture absorbing plate 34, but also affect the ventilation effect of the moisture absorbing plate 34, increasing the resistance of air passing through the moisture absorbing plate 34. For this purpose, a swing component is provided. When the sealing plate 29 moves upward, the sealing plate 29 will drive the top block 31 to slide upward synchronously along the inside of the movable groove 32. The top block 31 will slide in contact with the lower surface of the moisture absorbing plate 34 during the upward movement, and drive the moisture absorbing plate 34 to move the movable rod 33 through the top block 31. As the fulcrum is used for rotation, the support plate 19 pulls and supports the collision block 52 through the traction bar 54. The moisture absorbing plate 34 will contact the collision block 52 when it flips upward, and the collision block 52 will collide and knock the moisture absorbing plate 34. When the sealing plate 29 drives the top block 31 to move downward, the moisture absorbing plate 34 will flip downward under the action of gravity. The reciprocating swing of the moisture absorbing plate 34 and the contact with the collision block 52 can accelerate the shaking off of the dust on the surface of the moisture absorbing plate 34, thereby reducing the probability of dust clogging the mesh holes on the surface of the moisture absorbing plate 34, which not only ensures the water absorption effect of the moisture absorbing plate 34, but also enables the moisture absorbing plate 34 to maintain good permeability.

[0050] like Figure 3 , Figure 4 and Figure 6 As shown, a ventilation component is arranged on the upper side of the shell 11, and the ventilation component includes a fixing sleeve 23 fixedly connected to the outer surface of the upper end of the shell 11, and the upper outer surface of the fixing sleeve 23 is fixedly connected to the top cover 22, and the upper side of the outer surface of the fixing sleeve 23 is provided with ventilation grooves 24, and the number of the ventilation grooves 24 is several groups and distributed in a ring array, and the outer surface of the shell 11 is symmetrically fixedly connected with a cover body 12, and the cover body 12 is located on the upper side of the ventilation grooves 13.

[0051] A through hole 50 is formed on the outer surface of the lower end of the fixing sleeve 23, a motor 47 is fixedly connected to the outer surface of the lower end of the top cover 22, a rotating shaft 48 is fixedly connected to the lower end of the output shaft of the motor 47, a paddle 49 is fixedly connected to the outer surface of the rotating shaft 48, a contact switch 55 is fixedly connected to the outer surface of the lower end of the shell 11, and the contact switch 55 is located on the lower side of the top block 31.

[0052] By adopting the above technical solution, the housing 11 supports the top cover 22 through the fixing sleeve 23, so that the motor 47 is fixedly installed through the top cover 22. When the temperature inside the housing 11 rises and the sealing plate 29 moves up, the sealing plate 29 will drive the top block 31 to move up synchronously. When the top block 31 is out of contact with the contact switch 55, the contact switch 55 sends an electrical signal and controls the motor 47 to start running through the inverter control system. The output shaft of the motor 47 drives the blade 49 to rotate synchronously through the rotating shaft 48, so that the warm gas inside the housing 11 is sucked into the fixing sleeve 23 through the through hole 50 through the high-speed rotation of the blade 49. , and then the warm gas is discharged to the outside of the shell 11 through the ventilation groove 24 on the surface of the fixing sleeve 23. At this time, a certain negative pressure will be formed inside the shell 11. The air outside the shell 11 will enter the shell 11 through the ventilation groove 13 under the action of negative pressure. The cover body 12 is located on the upper side of the ventilation groove 13, which can shield and guide rainwater and dust on the surface of the shell 11. The heat inside the inverter can be discharged to the outside of the shell 11 through the circulation of air, so that the control module 16 and the power module 15 inside the shell 11 can be cooled, thereby further improving the cooling effect of the inverter.

[0053] like Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig.10 As shown, a circulation component is provided on the inner side of the shell 11, and the circulation component includes a second liquid storage chamber 39 opened on the inner side of the shell 11, and the number of the second liquid storage chambers 39 is several groups and distributed in parallel up and down, and the left and right ends of the outer surface of the shell 11 are fixedly connected with heat sinks 25, and the number of the heat sinks 25 is several groups and distributed in a linear array.

[0054] A first liquid storage chamber 38 is embedded in the inner side of the heat sink 25, and the upper and lower ends of the first liquid storage chamber 38 are connected to the second liquid storage chamber 39. The first liquid storage chamber 38 and the second liquid storage chamber 39 are filled with an appropriate amount of coolant. A second overflow groove 45 and a first overflow groove 44 are embedded in the upper end of the shell 11, and the lower end of the first overflow groove 44 is connected to the inside of the second liquid storage chamber 39.

[0055] A guide groove 40 is embedded in the inner side of the shell 11, and the upper end of the guide groove 40 is connected to the inside of the second liquid storage chamber 39. A sealing sleeve 41 is slidably connected to the inner surface of the guide groove 40, and a push rod 42 is fixedly connected to the outer surface of the lower end of the sealing sleeve 41. The lower end of the push rod 42 is fixedly connected to the outer surface of the upper end of the second movable plate 37. A sealing ring 43 is fixedly connected to the lower side of the inner surface of the guide groove 40, and the inner surface of the sealing ring 43 is slidably connected to the outer surface of the push rod 42.

[0056] By adopting the above technical solution, the inner wall of the shell 11 is embedded with a first liquid storage chamber 38, a second overflow groove 45 and a first overflow groove 44. The first liquid storage chamber 38, the second overflow groove 45 and the first overflow groove 44 are all filled with an appropriate amount of coolant. The shell 11 is cooled by the coolant. The first liquid storage chamber 38, the second overflow groove 45 and the first overflow groove 44 can effectively increase the contact area between the coolant and the shell 11, thereby effectively improving the cooling effect of the shell 11. After the coolant enters the second liquid storage chamber 39 inside the heat sink 25, the coolant is cooled by heat conduction through the heat sink 25. The heat sink 25 can increase the contact area with the external air, thereby accelerating the dissipation of the heat of the coolant, so that the temperature of the coolant can be maintained. Within an appropriate range, when the second movable plate 37 moves upward, the second movable plate 37 will drive the sealing sleeve 41 to move upward synchronously through the push rod 42, and the upper end of the guide groove 40 is connected to the inside of the second liquid storage chamber 39, so that the coolant can enter the inside of the guide groove 40, and the sealing ring 43 can seal between the guide groove 40 and the push rod 42, thereby reducing the probability of coolant leakage to a certain extent. When the sealing sleeve 41 slides inside the guide groove 40, it will push the coolant inside the guide groove 40, and the first liquid storage chamber 28 and the second liquid storage chamber 39 will remain sealed and the pressure will remain constant. At this time, the coolant is disturbed by the movement of the sealing sleeve 41, which can increase the circulation flow rate of the coolant, thereby further improving the cooling effect of the inverter.

[0057] The workflow of the technical solution of the present invention is as follows:

[0058] When the temperature inside the inverter rises, the hot expansion gas inside the airbag 36 expands due to the heat, and the airbag 36 drives the second movable plate 37 to move upward synchronously through the first movable plate 28 and the pull rod 35, and drives the sealing plate 29 to rise upward through the movable plate, so that the external air can enter the shell 11 through the ventilation groove 13, and then the warm gas is discharged to the outside of the shell 11 through the ventilation groove 24 on the surface of the fixed sleeve 23, so as to cool down the electrical components inside the inverter. After the air enters the shell 11, it will fully contact with the moisture absorption plate 34, and the moisture in the air will be effectively absorbed by the moisture absorption plate 34, so as to reduce the formation of condensation inside the inverter. The sealing plate 29 will drive the top block 31 to slide upward synchronously along the movable groove 32, and drive the moisture absorption plate 34 to rotate with the movable rod 33 as the fulcrum through the top block 31. The collision block 52 will collide and knock the moisture absorption plate 34, which can accelerate the shaking off of the dust on the surface of the moisture absorption plate 34, thereby reducing the probability of dust clogging the mesh holes on the surface of the moisture absorption plate 34. The second movable plate 37 will drive the sealing sleeve 41 to move upward synchronously through the push rod 42. When the sealing sleeve 41 slides inside the guide groove 40, it will disturb the coolant, which can increase the circulation flow rate of the coolant, thereby further improving the cooling effect on the inverter.

[0059] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A photovoltaic inverter for a solar photovoltaic module, comprising a housing, characterized in that: The inner surface of the shell is fixedly connected with a mounting seat, the outer surface of the mounting seat is fixedly connected with a power module and a control module, the outer surface of the shell is symmetrically provided with ventilation slots, and a dehumidification component is arranged inside the shell; The dehumidification component includes a partition fixedly connected to the lower end of the inner surface of the shell, a support plate fixedly connected to the outer surface of the partition, a groove is formed on the outer surface of the upper end of the support plate, a baffle plate fixedly connected to the inner surface of the shell, a movable rod fixedly connected between the baffle plate and the inner surface of the shell, a moisture absorption plate rotatably connected to the outer surface of the movable rod, the moisture absorption plate is in sliding contact with the outer surface of the rear end of the baffle, and elastic plates are symmetrically fixedly connected to the outer surface of the moisture absorption plate, and the outer surfaces of the two groups of elastic plates are in close contact with the outer surface of the partition.

2. The photovoltaic inverter for solar photovoltaic components according to claim 1, characterized in that: The moisture absorption plate is inclined upward away from one end of the movable rod and the upper end is attached to the inner wall of the shell. The moisture absorption plate and the movable rod are both in two groups and are symmetrically distributed on the left and right sides of the partition. The elastic plate is in an arc shape. The mounting seats are in two groups and are distributed in parallel up and down. A cover body is hinged on the front side of the outer surface of the shell, and a sealing gasket is fixedly connected to the outer surface of the front end of the shell.

3. The photovoltaic inverter for solar photovoltaic components according to claim 2, characterized in that: A sealing assembly is provided on the inner side of the shell, and the sealing assembly includes a second slide groove opened on the inner side of the shell, the second slide groove penetrates to the inner side of the ventilation groove, a sealing plate is slidably connected to the inner surface of the second slide groove, and a first slide groove is embedded on the inner side of the shell, the first slide groove is located on the upper side of the second slide groove and is connected to the inside of the second slide groove.

4. The photovoltaic inverter for solar photovoltaic components according to claim 3, characterized in that: A first movable plate is fixedly connected to the outer surface of the upper end of the sealing plate, the first movable plate is located inside the first slide groove and is slidably connected to the inner surface of the first slide groove, a fixed plate is fixedly connected to the inner surface of the first slide groove, an airbag is fixedly connected to the outer surface of the upper end of the fixed plate, the airbag is filled with hot expansion gas, a second movable plate is fixedly connected to the outer surface of the upper end of the airbag, a pull rod is fixedly connected to the outer surface of the lower end of the second movable plate, and the lower end of the pull rod is fixedly connected to the first movable plate.

5. The photovoltaic inverter for solar photovoltaic components according to claim 4, characterized in that: A swinging assembly is provided at the lower side of the moisture absorption plate, and the swinging assembly includes a movable groove opened on the inner surface of the shell, and the movable groove penetrates to the inner side of the second slide groove. A top block is fixedly connected to the outer surface of the lower end of the sealing plate, and the top block penetrates into the interior of the shell through the movable groove and is in sliding contact with the movable groove. The outer surface of the top block is in sliding contact with the outer surface of the lower end of the moisture absorption plate, and a traction bar is fixedly connected to the outer surface of the lower end of the support plate, and a collision block is fixedly connected to the lower end of the traction bar.

6. The photovoltaic inverter for solar photovoltaic components according to claim 5, characterized in that: A ventilation component is arranged on the upper side of the shell, and the ventilation component includes a fixed sleeve fixedly connected to the outer surface of the upper end of the shell, a top cover is fixedly connected to the outer surface of the upper end of the fixed sleeve, and ventilation grooves are opened on the upper side of the outer surface of the fixed sleeve. The number of the ventilation grooves is several groups and distributed in a ring array, and a cover body is symmetrically fixedly connected to the outer surface of the shell, and the cover body is located on the upper side of the ventilation grooves.

7. The photovoltaic inverter for solar photovoltaic components according to claim 6, characterized in that: A through hole is provided on the outer surface of the lower end of the fixing sleeve, a motor is fixedly connected to the outer surface of the lower end of the top cover, a rotating shaft is fixedly connected to the lower end of the motor output shaft, a blade is fixedly connected to the outer surface of the rotating shaft, and a contact switch is fixedly connected to the outer surface of the lower end of the shell, and the contact switch is located on the lower side of the top block.

8. The photovoltaic inverter for solar photovoltaic components according to claim 7, characterized in that: A circulation component is arranged on the inner side of the shell, and the circulation component includes a second liquid storage cavity opened on the inner side of the shell. The number of the second liquid storage cavities is several groups and they are distributed in parallel up and down. The left and right ends of the outer surface of the shell are fixedly connected with heat sinks. The number of the heat sinks is several groups and they are distributed in a linear array.

9. The photovoltaic inverter for solar photovoltaic components according to claim 8, characterized in that: A first liquid storage cavity is embedded in the inner side of the heat sink, and the upper and lower ends of the first liquid storage cavity are connected to the second liquid storage cavity. The first liquid storage cavity and the second liquid storage cavity are filled with an appropriate amount of coolant. A second overflow groove and a first overflow groove are embedded in the upper end of the shell, and the lower end of the first overflow groove is connected to the inside of the second liquid storage cavity.

10. The photovoltaic inverter for solar photovoltaic components according to claim 9, characterized in that: A guide groove is embedded on the inner side of the shell, the upper end of the guide groove is connected to the inside of the second liquid storage chamber, a sealing sleeve is slidably connected to the inner surface of the guide groove, a push rod is fixedly connected to the outer surface of the lower end of the sealing sleeve, the lower end of the push rod is fixedly connected to the outer surface of the upper end of the second movable plate, a sealing ring is fixedly connected to the lower side of the inner surface of the guide groove, and the inner surface of the sealing ring is slidably connected to the outer surface of the push rod.

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