A photovoltaic inverter based on a solar photovoltaic module

Abstract

The utility model relates to inverter technical field especially is based on photovoltaic inverter of solar photovoltaic module, including inverter main part, the inner wall fixed connection of inverter main part has dust gauze board, the quantity of dust gauze board is two, the inner wall fixed connection of inverter main part has installation frame, the quantity of installation frame is two, the lateral wall of installation frame is equipped with the vent groove, the inner bottom fixed connection of vent groove has fixed axle, the outer surface rotatory sleeve of fixed axle has baffle. The utility model, adopt the bimetallic spring piece of pure mechanical structure's response more quickly, can real -time according to internal temperature dynamic regulation heat dissipation efficiency, still reduced electronic component failure risk, while giving consideration to high temperature heat dissipation and low temperature heat preservation demand, improved inverter in different temperature environment's work reliability and stability.

Description

Technical Field

[0001] This utility model relates to the field of inverters, and more particularly to a photovoltaic inverter based on solar photovoltaic modules. Background Technology

[0002] A photovoltaic (PV) inverter is the core equipment of a solar photovoltaic (PV) system, converting the direct current (DC) generated by PV modules into alternating current (AC) that can be connected to the grid or used directly. It also features maximum power point tracking (MPPT) and anti-islanding capabilities, ensuring efficient and safe system operation. It serves as a crucial bridge connecting PV modules to the grid or load.

[0003] However, existing photovoltaic inverters often suffer from problems such as reliance on manual or electronic control for heat dissipation regulation and slow response. Either the heat dissipation is not timely enough at high temperatures, leading to overheating of components, or excessive heat dissipation at low temperatures affects the stability of operation. Summary of the Invention

[0004] In view of this, the present invention provides a photovoltaic inverter based on solar photovoltaic modules. The main technical problem to be solved is that existing photovoltaic inverters often have the problem of heat dissipation regulation relying on manual or electronic control and response lag. Either the heat dissipation is not timely at high temperatures, causing the components to overheat, or the heat dissipation is excessive at low temperatures, affecting the stability of operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic inverter based on a solar photovoltaic module, comprising an inverter body, two dustproof mesh panels fixedly connected to the inner wall of the inverter body, two mounting frames fixedly connected to the inner wall of the inverter body, ventilation grooves provided on the side walls of the mounting frames, four fixed shafts fixedly connected to the bottom of the ventilation grooves, baffles rotatably fitted on the outer surface of the fixed shafts, and four bimetallic spring sheets fixedly connected to the side walls of the dustproof mesh panels, with one end of the bimetallic spring sheet away from the dustproof mesh panel fixedly connected to the side wall of the baffle.

[0006] By adopting the above technical solution, a purely mechanical bimetallic spring sheet is used to sense the temperature and drive the baffle to move. No additional electronic control components are required. This not only results in a faster response and the ability to dynamically adjust the heat dissipation efficiency in real time according to the internal temperature, but also reduces the risk of electronic component failure. At the same time, it takes into account both high-temperature heat dissipation and low-temperature insulation requirements, thereby improving the reliability and stability of the inverter in different temperature environments.

[0007] As a further description of the above technical solution: The inverter body has four fixing blocks fixedly connected to its side wall, and a limit block is fixedly connected to the upper surface of each fixing block.

[0008] By adopting the above technical solution, the fixing block is used to provide an installation position for the limiting block, and the limiting block can limit the maximum unfolding angle of the baffle to avoid damage caused by excessive stretching of the bimetallic spring sheet.

[0009] As a further description of the above technical solution: Two motors are fixedly connected to the inner wall of the inverter body. The motors are located between adjacent dustproof mesh plates and baffles. A first pulley is fixedly connected to the output end of the motor. A first shaft is fixedly connected to the end of the first pulley away from the motor. A first fan blade is fixedly connected to the outer surface of the first shaft. The number of first fan blades is multiple.

[0010] By adopting the above technical solution, the motor drives the first pulley to rotate, which in turn drives the first shaft and the first fan blade to rotate and blow air, thus promoting the circulation of hot air inside the inverter body with the outside air, which is beneficial to heat dissipation.

[0011] As a further description of the above technical solution: The inverter body has two second rotating shafts rotatably mounted on its inner wall. The second rotating shafts are located below the motor. A second pulley is fixedly connected to the side wall of the second rotating shaft. A third rotating shaft is fixedly connected to the end of the second pulley away from the second rotating shaft. A second fan blade is fixedly connected to the outer surface of the third rotating shaft. The first pulley and the second pulley are connected by belt drive.

[0012] By adopting the above technical solution, the first pulley can drive the second pulley to rotate synchronously through the belt, which in turn drives the second and third shafts to rotate, which in turn drives the second fan blades to rotate and blow air, thus promoting the circulation of hot air inside the inverter body with the outside air, which is beneficial to heat dissipation.

[0013] As a further description of the above technical solution: The inverter body is fixedly connected to the outer wall with anti-collision corner guards, and there are multiple anti-collision corner guards.

[0014] By adopting the above technical solutions, the anti-collision corner protectors can effectively absorb the impact force of collisions and prevent the equipment from being deformed, painted, or damaged due to bumps during handling, installation, or use.

[0015] As a further description of the above technical solution: The upper surface of the inverter body is fixedly connected with pull rings, and there are multiple pull rings.

[0016] By adopting the above technical solution, the pull ring can assist operators in moving the main body of the inverter.

[0017] By employing the above technical solution, the photovoltaic inverter based on solar photovoltaic modules of this utility model has at least the following beneficial effects: Compared to existing technologies, this photovoltaic inverter based on solar photovoltaic modules utilizes an inverter body, bimetallic spring plates, baffles, and a fixed shaft. When the inverter body generates significant heat, the bimetallic spring plates stretch due to the heat, causing the baffles to rotate around the fixed shaft, creating gaps between adjacent baffles for heat dissipation. When the internal temperature is suitable, the bimetallic spring plates reset, causing the baffles to close, reducing heat loss and preventing external low temperatures from affecting the operation of internal components. Compared to existing photovoltaic inverters that often rely on manual or electronic control for heat dissipation adjustment and suffer from delayed response—either insufficient heat dissipation at high temperatures leading to component overheating, or excessive heat dissipation at low temperatures affecting operational stability—this photovoltaic inverter based on solar photovoltaic modules uses a purely mechanical bimetallic spring plate structure to sense temperature and drive the baffles, eliminating the need for additional electronic control components. This not only results in a faster response and real-time dynamic adjustment of heat dissipation efficiency based on internal temperature but also reduces the risk of electronic component failure. Furthermore, it addresses both high-temperature heat dissipation and low-temperature insulation requirements, improving the inverter's reliability and stability under different temperature environments.

[0018] Compared with existing technologies, this photovoltaic inverter based on solar photovoltaic modules comprises a motor, a first pulley, a first shaft, a first fan blade, an inverter body, a belt, a second pulley, a second shaft, a third shaft, and a second fan blade. The motor drives the first pulley to rotate, which in turn drives the first shaft and the first fan blade to rotate, thus circulating hot air inside the inverter body with outside air. The rotation of the first pulley can synchronously drive the second pulley to rotate via the belt, which in turn drives the second and third shafts to rotate, which in turn drives the second fan blade to rotate, further circulating hot air inside the inverter body with outside air, which is beneficial for heat dissipation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 For Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged view of the structure at point B; Figure 5 This is a cross-sectional view of the overall structure of this utility model; Figure 6 for Figure 5 Enlarged view of the structure at point C; Figure 7for Figure 5 Enlarged view of the structure at point D.

[0020] Legend: 1. Inverter body; 2. Dustproof mesh panel; 3. Mounting frame; 4. Ventilation groove; 5. Fixed shaft; 6. Baffle; 7. Bimetallic spring sheet; 8. Fixing block; 9. Limiting block; 10. Motor; 11. First pulley; 12. First shaft; 13. First fan blade; 14. Second shaft; 15. Second pulley; 16. Third shaft; 17. Second fan blade; 18. Belt; 19. Anti-collision corner guards; 20. Pull ring. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-7 The present invention provides a photovoltaic inverter based on solar photovoltaic modules: including an inverter body 1, on which a number of auxiliary components are provided. These components are arranged inside the inverter body 1 and on the outer surface of the outer shell to cooperate with the overall structure to achieve stable operation, but their specific structure is not shown in the drawings. The interior of the inverter body 1 has sufficient space to install the corresponding components. This is the prior art and will not be described in detail here. Two dustproof mesh panels 2 are fixedly connected to the inner wall of the inverter body 1. Two mounting frames 3 are fixedly connected to the inner wall of the inverter body 1. A ventilation groove 4 is opened on the side wall of the mounting frame 3. A fixed shaft 5 is fixedly connected to the bottom of the ventilation groove 4. Four fixed shafts 5 are fixedly connected to the bottom of the ventilation groove 4. A baffle 6 is rotatably sleeved on the outer surface of the fixed shaft 5. A bimetallic spring plate 7 is fixedly connected to the side wall of the dustproof mesh panel 2. The bimetallic spring plate 7 is composed of two metals with different coefficients of thermal expansion. There are four bimetallic spring plates 7. The end of the bimetallic spring plate 7 away from the dustproof mesh panel 2 is fixedly connected to the side wall of the baffle 6. When the inverter body 1 generates a lot of heat during operation, the bimetallic spring plate 7 is stretched by the heat, causing the baffle 6 to rotate around the fixed shaft 5, creating a gap between adjacent baffles 6 for heat dissipation. When the internal temperature is suitable, the bimetallic spring plate 7 returns to its original position, causing the baffle 6 to close, reducing heat loss and preventing the low external temperature from affecting the operation of the internal components of the inverter body 1. The side wall of the inverter body 1 is fixedly connected with four fixing blocks 8. The upper surface of the fixing blocks 8 is fixedly connected with limit blocks 9. The fixing blocks 8 are used to provide the installation position for the limit blocks 9. The limit blocks 9 can limit the maximum unfolding angle of the baffle 6 to prevent the bimetallic spring plate 7 from being overstretched and damaged.

[0023] Two motors 10 are fixedly connected to the inner wall of the inverter body 1. The motors 10 are located between adjacent dustproof mesh plates 2 and baffles 6. A first pulley 11 is fixedly connected to the output end of each motor 10. A first shaft 12 is fixedly connected to the end of the first pulley 11 furthest from the motor 10. Multiple first fan blades 13 are fixedly connected to the outer surface of the first shaft 12. When the motors 10 operate, they drive the first pulley 11 to rotate, which in turn drives the first shaft 12 and the first fan blades 13 to rotate, thus blowing air and promoting the circulation of hot air inside the inverter body 1 with the outside air, which is beneficial for heat dissipation. A second shaft 14 is rotatably mounted on the inner wall of the inverter body 1. There are two shafts. The second shaft 14 is located below the motor 10. The second pulley 15 is fixedly connected to the side wall of the second shaft 14. The end of the second pulley 15 away from the second shaft 14 is fixedly connected to the third shaft 16. The outer surface of the third shaft 16 is fixedly connected to the second fan blades 17. There are multiple second fan blades 17. The first pulley 11 and the second pulley 15 are connected by a belt 18. The rotation of the first pulley 11 can drive the second pulley 15 to rotate synchronously through the belt 18, which in turn drives the second shaft 14 and the third shaft 16 to rotate, which in turn drives the second fan blades 17 to rotate and blow air, so as to promote the circulation of hot air inside the inverter body 1 with the outside air, which is conducive to heat dissipation.

[0024] The outer wall of the inverter body 1 is fixedly connected with anti-collision corner guards 19. There are multiple anti-collision corner guards 19. The anti-collision corner guards 19 can effectively absorb the impact force of collision and prevent the casing from being deformed, painted or damaged due to bumps during the handling, installation or use of the equipment. The upper surface of the inverter body 1 is fixedly connected with pull rings 20. There are multiple pull rings 20. The pull rings 20 can assist the operator in moving the inverter body 1.

[0025] Working principle: When the inverter body 1 generates a lot of heat, the bimetallic spring plate 7 is stretched by the heat, which drives the baffle 6 to rotate around the fixed shaft 5, creating a gap between adjacent baffles 6 for heat dissipation. When the internal temperature is suitable, the bimetallic spring plate 7 returns to its original position, driving the baffle 6 to close, reducing heat loss and preventing the low external temperature from affecting the operation of the internal components of the inverter body 1. The motor 10 drives the first pulley 11 to rotate, which in turn drives the first shaft 12 and the first fan blade 13 to rotate and blow air, allowing the hot air inside the inverter body 1 to circulate with the outside air. The rotation of the first pulley 11 can synchronously drive the second pulley 15 to rotate through the belt 18, which in turn drives the second shaft 14 and the third shaft 16 to rotate, which in turn drives the second fan blade 17 to rotate and blow air, allowing the hot air inside the inverter body 1 to circulate with the outside air, which is beneficial for heat dissipation.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic inverter based on solar photovoltaic modules, comprising an inverter body (1), characterized in that: The inner wall of the inverter body (1) is fixedly connected with a dustproof mesh plate (2), and there are two dustproof mesh plates (2). The inner wall of the inverter body (1) is fixedly connected with a mounting frame (3), and there are two mounting frames (3). The side wall of the mounting frame (3) is provided with a ventilation groove (4). The bottom of the ventilation groove (4) is fixedly connected with a fixed shaft (5), and there are four fixed shafts (5). The outer surface of the fixed shaft (5) is rotatably fitted with a baffle (6). The side wall of the dustproof mesh plate (2) is fixedly connected with a bimetallic spring plate (7), and there are four bimetallic spring plates (7). The end of the bimetallic spring plate (7) away from the dustproof mesh plate (2) is fixedly connected to the side wall of the baffle (6).

2. A photovoltaic inverter based on a solar photovoltaic module according to claim 1, characterized in that: The inverter body (1) is fixedly connected to a fixing block (8) on its side wall. There are four fixing blocks (8), and a limit block (9) is fixedly connected to the upper surface of the fixing block (8).

3. A photovoltaic inverter based on solar photovoltaic modules according to claim 2, characterized in that: The inverter body (1) has a motor (10) fixedly connected to its inner wall. There are two motors (10). The motors (10) are located between adjacent dustproof mesh plates (2) and baffles (6). The output end of the motor (10) is fixedly connected to a first pulley (11). The end of the first pulley (11) away from the motor (10) is fixedly connected to a first rotating shaft (12). The outer surface of the first rotating shaft (12) is fixedly connected to a first fan blade (13). There are multiple first fan blades (13).

4. A photovoltaic inverter based on a solar photovoltaic module according to claim 3, characterized in that: The inverter body (1) has a second rotating shaft (14) rotatably mounted on its inner wall. There are two second rotating shafts (14). The second rotating shafts (14) are located below the motor (10). A second pulley (15) is fixedly connected to the side wall of the second rotating shaft (14). A third rotating shaft (16) is fixedly connected to the end of the second pulley (15) away from the second rotating shaft (14). A second fan blade (17) is fixedly connected to the outer surface of the third rotating shaft (16). There are multiple second fan blades (17). The first pulley (11) and the second pulley (15) are connected by a belt (18).

5. A photovoltaic inverter based on a solar photovoltaic module according to claim 4, characterized in that: The inverter body (1) is fixedly connected to the outer wall with anti-collision corner guards (19), and there are multiple anti-collision corner guards (19).

6. A photovoltaic inverter based on a solar photovoltaic module according to claim 5, characterized in that: The upper surface of the inverter body (1) is fixedly connected with a pull ring (20), and there are multiple pull rings (20).

Images