Modular distributed photovoltaic inverter

Abstract

The utility model discloses a modularized distributed photovoltaic inverter, which comprises an outer shell, the left and right positions of the lower part of the front surface of the outer shell are fixedly connected with bearing seats, the two bearing seats are provided with an inverter body, the left and right positions in the outer shell are rotatably connected with threaded rods, the two threaded rods are sleeved with moving sleeves in a threaded manner, and the moving sleeves are connected with the movable sleeves in a threaded manner. Moving rods are fixedly connected to the front surfaces of the two moving sleeves, one ends of the two moving rods are jointly connected with a pressing plate, a moving groove is formed in the front surface of the outer shell, a driving mechanism is arranged in the outer shell, heat dissipation grooves are formed in the upper portions of the left side face and the right side face of the inverter body, and first dustproof nets are arranged on the heat dissipation grooves. A plurality of ventilation holes are formed in the lower surface of the inverter body, a heat dissipation mechanism is arranged on the lower surface of the inverter body and located on the outer sides of the ventilation holes, and the inverter has the advantages of being high in practicability, convenient to assemble and disassemble and better in heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, specifically to a modular distributed photovoltaic inverter. Background Technology

[0002] In response to the national strategic goals of "carbon peaking" and "carbon neutrality," it is necessary to vigorously develop clean energy power generation, with photovoltaics as a typical example. Among these, distributed photovoltaic power generation has become an important component of my country's photovoltaic power generation system due to its flexibility and other characteristics. Distributed photovoltaic power generation systems are typically connected to the public AC power grid through modular inverters.

[0003] Existing inverters are usually fixed with mounting bolts, which require disassembly tools and result in a slow disassembly process, leading to low efficiency and hindering later maintenance. In addition, inverters generate a lot of heat during use, and current inverters usually rely on natural wind for heat dissipation, which is ineffective and affects their working efficiency.

[0004] Therefore, it is essential to design a highly practical modular distributed photovoltaic inverter. Summary of the Invention

[0005] The purpose of this invention is to provide a modular distributed photovoltaic inverter to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modular distributed photovoltaic inverter, including a housing, with support seats fixedly connected to the left and right positions of the lower front surface of the housing, and an inverter body placed on the two support seats. Threaded rods are rotatably connected to the left and right positions of the housing via first bearings. Movable sleeves are threaded onto the two threaded rods, and movable rods are fixedly connected to the front surfaces of the two movable sleeves. One end of each movable rod extends out of the housing and is connected to a pressure plate. A movable groove for the movable rods to move is provided on the front surface of the housing. A drive mechanism for driving the two threaded rods to rotate is provided inside the housing. Heat dissipation grooves are provided on the upper positions of the left and right sides of the inverter body, with first dustproof nets provided on the heat dissipation grooves. Multiple ventilation holes are provided on the lower surface of the inverter body, and a heat dissipation mechanism is provided on the lower surface of the inverter body outside the ventilation holes.

[0007] According to the above technical solution, the driving mechanism includes a rotating rod, which is rotatably mounted on the lower surface of the outer casing via a second bearing. One end of the rotating rod is fixedly connected to a rotating plate, and the other end of the rotating rod is fixedly connected to a first transmission wheel. A second transmission wheel is fixedly sleeved on the threaded rod on the left side. The first transmission wheel and the second transmission wheel are connected by a first transmission chain. A third transmission wheel is fixedly sleeved on each of the two threaded rods, and the two third transmission wheels are connected by a second transmission chain.

[0008] According to the above technical solution, the inverter body is provided with a placement slot located at the heat dissipation groove, the first dustproof net is placed in the placement slot, and the upper and lower sides of the first dustproof net are fixedly connected to limit plates. The placement slot is provided with a slot for placing the limit plates, and the limit plates are fixedly connected with a first locking plate. The slot is provided with a first locking groove that cooperates with the first locking plate. The first dustproof net is provided with a first sealing ring, and the placement slot is provided with a first sealing groove that cooperates with the first sealing ring.

[0009] According to the above technical solution, the heat dissipation mechanism includes a connecting housing. Fixing plates are fixedly connected to both the front and rear sides of the connecting housing. The fixing plates are fixed to the lower surface of the inverter body by fixing bolts. A cooling fan is fixedly connected inside the connecting housing by a support rod. A cover plate is provided at the bottom of the connecting housing. First connecting plates are fixedly connected to both the left and right sides of the connecting housing. Second connecting plates are fixedly connected to the left and right sides of the cover plate at positions corresponding to the first connecting plates. A second locking plate is fixedly connected to the lower surface of the first connecting plate. A second locking groove is provided on the upper surface of the second connecting plate to engage with the second locking plate. A second sealing ring is provided on the lower surface of the connecting housing. A second sealing groove is provided on the upper surface of the cover plate to engage with the second sealing ring. A second dustproof mesh is fixedly installed on the cover plate.

[0010] According to the above technical solution, the lower surface of the pressure plate is provided with an anti-slip layer.

[0011] According to the above technical solution, mounting plates are fixedly connected to both the left and right sides of the outer casing, and mounting holes are provided at the top and bottom positions of the mounting plates. Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, through the cooperation between the outer casing, support seat, first bearing, threaded rod, movable sleeve, movable rod, pressure plate, movable groove, and drive mechanism, facilitates the fixed installation of the inverter body. Simultaneously, it facilitates disassembly during later maintenance and repair of the inverter body, resulting in high disassembly efficiency. Through the cooperation between the heat dissipation groove, first dustproof net, ventilation holes, and heat dissipation mechanism, outside air can be introduced into the inverter body, and then the heat inside the casing can be discharged through the heat dissipation groove, achieving air circulation and excellent heat dissipation effect, thus avoiding affecting its working efficiency. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 is a three-dimensional structural schematic diagram of this utility model;

[0014] Figure 2 is a partial structural schematic diagram of this utility model;

[0015] Figure 3 is a schematic diagram of the main structure of this utility model;

[0016] Figure 4 is a schematic diagram of the front sectional view of this utility model;

[0017] Figure 5 is a schematic cross-sectional view of the main part of this utility model;

[0018] Figure 6 is a schematic diagram of the left sectional view of this utility model;

[0019] Figure 7 is a schematic diagram of the connection structure of the threaded rod of this utility model;

[0020] Figure 8 is an enlarged structural diagram of part A in Figure 5;

[0021] Figure 9 is an enlarged structural diagram of part B in Figure 5;

[0022] In the diagram: 1-Outer casing, 2-Support base, 3-Inverter body, 4-First bearing, 5-Threaded rod, 6-Moving sleeve, 7-Moving rod, 8-Pressure plate, 9-Moving groove, 10-Heat sink, 11-First dustproof net, 12-Ventilation hole, 13-Rotating rod, 14-Second bearing, 15-Turning plate, 16-First transmission wheel, 17-Second transmission wheel, 18-First transmission chain, 19-Third transmission wheel, 20-Second transmission chain, 21-Placement groove, 22-Limiting plate, 2 3-Slot, 24-First clamping plate, 25-First clamping groove, 26-First sealing ring, 27-First sealing groove, 28-Connecting housing, 29-Fixing plate, 30-Fixing bolt, 31-Support rod, 32-Cooling fan, 33-Cover plate, 34-First connecting plate, 35-Second connecting plate, 36-Second clamping plate, 37-Second clamping groove, 38-Second sealing ring, 39-Second sealing groove, 40-Second dustproof net, 41-Anti-slip layer, 42-Mounting plate, 43-Mounting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 1-9. This utility model provides a technical solution: a modular distributed photovoltaic inverter, including a housing 1. Support seats 2 are fixedly connected to the left and right positions of the lower front surface of the housing 1. An inverter body 3 is placed on each of the two support seats 2. Threaded rods 5 are rotatably connected to the left and right positions inside the housing 1 via first bearings 4. Movable sleeves 6 are threaded onto each of the two threaded rods 5. Movable rods 7 are fixedly connected to the front surfaces of each of the two movable sleeves 6. One end of each movable rod 7 extends out of the housing 1 and is connected to a pressure plate 8. A moving groove 9 for the moving rods 7 is provided on the front surface of the housing 1. A drive mechanism for rotating the two threaded rods 5 is provided inside the housing 1. Through the cooperation between the housing 1, support seats 2, first bearings 4, threaded rods 5, movable sleeves 6, movable rods 7, pressure plate 8, moving groove 9, and drive mechanism, the drive mechanism can realize the rotation of the two threaded rods 5. The rotation of the two threaded rods 5 causes the movable sleeves 6 to move on the movable rods 7. The inverter body 3 is moved in conjunction with the moving slot 9, and the moving rod 7 can drive the pressure plate 8 to move, which can clamp the inverter body 3, thus facilitating the fixed installation of the inverter body 3. Similarly, when the inverter body 3 needs to be inspected and maintained later, it is easy to disassemble the inverter body 3 with high disassembly efficiency. The upper part of the left and right sides of the inverter body 3 is provided with heat dissipation slots 10, and the heat dissipation slots 10 are provided with a first dustproof net 11. The lower surface of the inverter body 3 is provided with multiple ventilation holes 12, and the lower surface of the inverter body 3 is provided outside the ventilation holes 12. The heat dissipation mechanism is provided on the lower surface of the inverter body 3 and outside the ventilation holes 12. Through the cooperation between the heat dissipation slots 10, the first dustproof net 11, the ventilation holes 12 and the heat dissipation mechanism, the cooling fan 32 in the heat dissipation mechanism can be activated. The rotation of the cooling fan 32 can introduce outside air into the inverter body 3, and then the heat inside the outer casing 1 can be discharged through the heat dissipation slots 10 to achieve air circulation and better heat dissipation effect, avoiding affecting its working efficiency.The driving mechanism includes a rotating rod 13, which is rotatably mounted on the lower surface of the outer casing 1 via a second bearing 14. A rotating plate 15 is fixedly connected to one end of the rotating rod 13, and a first transmission wheel 16 is fixedly connected to the other end. A second transmission wheel 17 is fixedly sleeved on the left threaded rod 5. The first transmission wheel 16 and the second transmission wheel 17 are connected via a first transmission chain 18. A third transmission wheel 19 is fixedly sleeved on each of the two threaded rods 5, and the two third transmission wheels 19 are connected via a second transmission chain 20. Through this driving mechanism, the rotating plate 15 can be rotated during use. The rotating plate 15 drives the first transmission wheel 16 to rotate via the rotating rod 13. The first transmission wheel 16 drives the second transmission wheel 17 to rotate via the first transmission chain 18, thereby causing the left threaded rod 5 to rotate. The left threaded rod 5, through the cooperation of the third transmission wheel 19 and the second transmission chain 20, can drive the right threaded rod 5 to rotate, thus realizing the rotation of both threaded rods 5. The inverter body 3 has a placement slot 21 located at the heat sink 10. The first dustproof net 11 is placed in the placement slot 21. Limiting plates 22 are fixedly connected to both the upper and lower sides of the first dustproof net 11. The placement slot 21 has a slot 23 for placing the limiting plate 22. A first locking plate 24 is fixedly connected to the limiting plate 22. A first locking groove 25 is provided in the slot 23 to engage with the first locking plate 24. The first dustproof net 11 has a first sealing ring 26. The placement slot 21 has a first sealing groove 27 to engage with the first sealing ring 26. Through the cooperation between the placement slot 21, the first dustproof net 11, the limiting plate 22, the slot 23, the first locking plate 24, and the first locking groove 25, the first dustproof net 11 can be installed and disassembled, facilitating later cleaning and replacement. The first dustproof net 11 can prevent dust from entering. The cooperation with the first sealing groove 27 can enhance the sealing performance of the connection between the first dustproof net 11 and the placement groove 21;The heat dissipation mechanism includes a connecting housing 28. Fixing plates 29 are fixedly connected to both the front and rear sides of the connecting housing 28. The fixing plates 29 are fixed to the lower surface of the inverter body 3 by fixing bolts 30. A cooling fan 32 is fixedly connected inside the connecting housing 28 by a support rod 31. A cover plate 33 is provided below the connecting housing 28. First connecting plates 34 are fixedly connected to both the left and right sides of the connecting housing 28. Second connecting plates 35 are fixedly connected to the left and right sides of the cover plate 33 at positions corresponding to the first connecting plates 34. A second locking plate 36 is fixedly connected to the lower surface of the first connecting plate 34. A second locking groove 37 is provided on the upper surface of the second connecting plate 35 to engage with the second locking plate 36. A second sealing ring 38 is provided on the lower surface of the connecting housing 28. A second sealing groove 39 is provided on the upper surface of the cover plate 33 to engage with the second sealing ring 38. A second dustproof mesh 40 is fixedly installed on the upper part. Through the connection housing 28, fixing plate 29, and fixing bolts 30 in the heat dissipation mechanism, the heat dissipation mechanism can be fixed to the lower surface of the inverter body 3. The cover plate 33, first connecting plate 34, second connecting plate 35, second locking plate 36, and second locking groove 37 allow for the installation and removal of the cover plate 33, facilitating the cleaning and replacement of the second dustproof mesh 40 later. The second dustproof mesh 40 prevents dust from entering. The cooperation of the second sealing ring 38 and the second sealing groove 39 enhances the sealing performance between the cover plate 33 and the connecting housing 28. The lower surface of the pressure plate 8 is provided with an anti-slip layer 41, which enhances the friction between the pressure plate 8 and the inverter body 3, improving the stability of the fixation. Mounting plates 42 are fixedly connected to both the left and right sides of the outer casing 1. Mounting holes 43 are provided at both the top and bottom positions. Through the mounting plate 42 and the mounting holes 43, and in conjunction with the mounting bolts, the outer casing 1 can be fixed in the desired installation position.

[0025] Working Principle: In use, the mounting plate 42 and mounting holes 43, along with the mounting bolts, fix the outer casing 1 to the desired installation position. When fixing the inverter body 3, it is placed on two support seats 2. Then, the rotating plate 15 in the drive mechanism is turned. The rotating plate 15 drives the first transmission wheel 16 to rotate via the rotating rod 13. The first transmission wheel 16 drives the second transmission wheel 17 to rotate via the first transmission chain 18, thereby causing the left threaded rod 5 to rotate. The left threaded rod 5, through the cooperation of the third transmission wheel 19 and the second transmission chain 20, drives the right threaded rod 5 to rotate, thus achieving the rotation of both threaded rods 5. The rotation of the two threaded rods 5 causes the moving sleeve 6 to move under the cooperation of the moving rod 7 and the moving groove 9. The moving rod 7 then drives the pressure plate 8 to move, clamping the inverter body 3 and facilitating the installation of the inverter body 3. The anti-slip layer 41 enhances the friction between the pressure plate 8 and the inverter body 3, improving the stability of the installation. Similarly, it facilitates disassembly of the inverter body 3 during later maintenance and repairs, resulting in high disassembly efficiency. For heat dissipation, the cooling fan 32 in the heat dissipation mechanism can be activated. The rotation of the cooling fan 32 draws outside air into the inverter body 3, and then exhausts the heat from the outer casing 1 through the heat dissipation slot 10, achieving air circulation and excellent heat dissipation, thus avoiding any impact on its working efficiency. The first dustproof net 11 can be installed and disassembled through the cooperation of the placement slot 21, the first dustproof net 11, the limiting plate 22, the slot 23, the first locking plate 24, and the first locking slot 25, facilitating later cleaning and replacement. The first dustproof net 11 prevents dust from entering. The cooperation of the first sealing ring 26 and the first sealing slot 27 enhances the protection of the first dustproof net 11. The sealing of the connection with the placement slot 21 is achieved through the setting of the connecting housing 28, fixing plate 29 and fixing bolt 30 in the heat dissipation mechanism, which can fix the heat dissipation mechanism to the lower surface of the inverter body 3. The setting of the cover plate 33, the first connecting plate 34, the second connecting plate 35, the second clamping plate 36 and the second clamping groove 37 can realize the installation and removal of the cover plate 33, and then facilitate the cleaning and replacement of the second dustproof net 40 on the cover plate 33 in the future. The setting of the second dustproof net 40 can prevent dust from entering. The cooperation of the second sealing ring 38 and the second sealing groove 39 can enhance the sealing of the connection between the cover plate 33 and the connecting housing 28.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Modular distributed photovoltaic inverter comprising an outer casing (1), characterized in that: The outer casing The lower left and right sides of the front surface of the body (1) are fixedly connected to the support seats (2), and the inverter body (3) is placed on the two support seats (2). The left and right sides of the outer shell (1) are rotatably connected to the threaded rods (5) through the first bearings (4). The two threaded rods (5) are threaded with movable sleeves (6). The front surfaces of the two movable sleeves (6) are fixedly connected to the movable rods (7). One end of the two movable rods (7) extends out of the outer shell (1) and is connected to the pressure plate (8). The front surface of the outer casing (1) is provided with a moving groove (9) for the moving rod (7) to move. The outer casing (1) is provided with a driving mechanism for driving two threaded rods (5) to rotate. The upper part of the left and right sides of the inverter body (3) is provided with heat dissipation grooves (10). The heat dissipation grooves (10) are provided with a first dustproof net (11). The lower surface of the inverter body (3) is provided with multiple ventilation holes (12). The lower surface of the inverter body (3) and outside the ventilation holes (12) are provided with a heat dissipation mechanism.

2. The modular, distributed PV inverter of claim 1, wherein: The driving mechanism includes a rotating rod (13), which is rotatably mounted on the lower surface of the outer shell (1) via a second bearing (14). One end of the rotating rod (13) is fixedly connected to a rotating plate (15), and the other end of the rotating rod (13) is fixedly connected to a first transmission wheel (16). A second transmission wheel (17) is fixedly sleeved on the threaded rod (5) on the left side. The first transmission wheel (16) and the second transmission wheel (17) are connected by a first transmission chain (18). A third transmission wheel (19) is fixedly sleeved on each of the two threaded rods (5), and the two third transmission wheels (19) are connected by a second transmission chain (20).

3. The modular, distributed PV inverter of claim 1, wherein: The inverter body (3) is provided with a placement slot (21) located at the heat dissipation groove (10). The first dustproof net (11) is placed in the placement slot (21). Limiting plates (22) are fixedly connected to the upper and lower sides of the first dustproof net (11). The placement slot (21) is provided with a slot (23) for placing the limiting plate (22). A first locking plate (24) is fixedly connected to the limiting plate (22). A first locking groove (25) is provided in the slot (23) to engage with the first locking plate (24). A first sealing ring (26) is provided on the first dustproof net (11). A first sealing groove (27) is provided in the placement slot (21) to engage with the first sealing ring (26).

4. The modular, distributed PV inverter of claim 1, wherein: The heat dissipation mechanism includes a connecting housing (28), with fixing plates (29) fixedly connected to both the front and rear sides of the connecting housing (28). The fixing plates (29) are fixed to the lower surface of the inverter body (3) by fixing bolts (30). A cooling fan (32) is fixedly connected inside the connecting housing (28) by a support rod (31). A cover plate (33) is provided at the bottom of the connecting housing (28). A first connecting plate (34) is fixedly connected to both the left and right sides of the connecting housing (28). The left and right sides of the cover plate (33) are connected to the first connecting plate (34). A second connecting plate (35) is fixedly connected to a corresponding position of a connecting plate (34). A second locking plate (36) is fixedly connected to the lower surface of the first connecting plate (34). A second locking groove (37) is provided on the upper surface of the second connecting plate (35) to engage with the second locking plate (36). A second sealing ring (38) is provided on the lower surface of the connecting housing (28). A second sealing groove (39) is provided on the upper surface of the cover plate (33) to engage with the second sealing ring (38). A second dustproof net (40) is fixedly installed on the cover plate (33).

5. The modular, distributed PV inverter of claim 1, wherein: The lower surface of the pressure plate (8) is provided with an anti-slip layer (41).

6. The modular, distributed PV inverter of claim 1, wherein: Mounting plates (42) are fixedly connected to both the left and right sides of the outer shell (1), and mounting holes (43) are provided at the upper and lower positions of the mounting plates (42).

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