Photovoltaic inverter structure with energy management function

Abstract

The invention discloses a photovoltaic inverter structure with an energy management function, and relates to the technical field of photovoltaic power generation, and the photovoltaic inverter structure comprises a protective housing, the top of the protective housing is movably provided with a detachable top cover, and the interior of the protective housing is fixedly provided with a circuit board assembly. A circulating water cooling structure is arranged between the bottom of the circuit board assembly and the bottom face of the inner side of the protective shell and used for conducting and dissipating heat generated by the circuit board assembly, and sliding cleaning mechanisms are slidably attached to the upper side and the lower side of the circulating water cooling structure and used for removing condensate water. By designing a circulating water cooling structure, a sliding cleaning mechanism, a ventilation and heat dissipation mechanism and an energy management mechanism, the problems of condensate water erosion, insufficient heat dissipation efficiency and fixed output path of the photovoltaic inverter under temperature and humidity differences are cooperatively solved, and the practicability, heat dissipation stability and energy management flexibility of equipment are remarkably improved; and the service life of equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to a photovoltaic inverter structure with energy management function. Background Technology

[0002] Against the backdrop of the global energy structure transitioning towards clean energy, photovoltaic power generation, as an important form of renewable energy utilization, has seen its installed capacity grow rapidly. As the core equipment of photovoltaic power generation systems, photovoltaic inverters play a crucial role in converting the direct current generated by photovoltaic arrays into alternating current that meets the requirements of the power grid or load. Their performance directly affects the power generation efficiency, reliability, and grid connection security of the entire photovoltaic system.

[0003] However, the existing photovoltaic inverter structure still has certain defects in use; As proposed in application number CN202322187170.2, a heat-dissipating photovoltaic inverter includes a main body and an auxiliary body. The auxiliary body is located at the left end of the main body. The main body includes a photovoltaic inverter body, a processor, and an operation panel. This heat-dissipating photovoltaic inverter, by installing the main body, enables real-time monitoring of the internal temperature of the photovoltaic inverter body during use. When the temperature is too high, the heat dissipation components are activated for circulating water cooling, providing a good working environment for the processor inside the photovoltaic inverter body and preventing excessive internal temperature from shortening its lifespan. This heat dissipation method makes the photovoltaic inverter body dissipate heat more evenly and quickly, and the closed heat dissipation structure prevents external dust from entering the photovoltaic inverter body, improving the automation and protection of the photovoltaic inverter body. However, in actual use, the following problems still exist: The photovoltaic inverter dissipates internal heat through water cooling. However, in environments with large temperature differences and high humidity, water droplets easily condense on the circulating water cooling pipes inside the photovoltaic inverter. These condensed water droplets can corrode the electronic components inside the photovoltaic inverter and also affect the heat dissipation effect, reducing its practicality and performance. When the photovoltaic inverter outputs the inverted AC power, the output interface configuration is fixed and lacks the ability to dynamically switch and manage the output path of the inverted AC power. As a result, the power can only be transmitted along the preset transmission route and cannot be flexibly adjusted according to the load distribution, grid status or energy dispatch requirements, which further restricts the overall effect of energy management.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was implemented based on the existing photovoltaic inverter structure with energy management capabilities. Summary of the Invention

[0006] The purpose of this invention is to provide a photovoltaic inverter structure with energy management function to solve the problems mentioned in the background art, such as the tendency of water droplets to form under temperature and humidity conditions, which can easily corrode components and affect heat dissipation, reducing practical performance, and the fixed output interface leading to a lack of dynamic switching capability of output path, making it difficult to flexibly adjust and restrict energy management.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic inverter structure with energy management function, including a protective shell, a detachable top cover being movably installed on the top of the protective shell, and a circuit board assembly being fixedly installed inside the protective shell; A circulating water cooling structure is provided between the bottom of the circuit board assembly and the inner bottom surface of the protective shell to conduct and dissipate the heat generated by the circuit board assembly. The upper and lower sides of the circulating water cooling structure are fitted with sliding cleaning mechanisms for removing condensate. The protective shell is equipped with ventilation and heat dissipation mechanisms at the front end and on the left and right sides to achieve ventilation and heat dissipation inside the protective shell, and in conjunction with the circulating water cooling structure to achieve heat dissipation of the coolant. The protective housing has input protective sleeves installed at equal intervals at its rear end, and the circuit board assembly has input terminal blocks installed at equal intervals on its rear top surface, with the input terminal blocks corresponding to the input protective sleeves. The protective housing has output protective sleeves installed at equal intervals at its front end, and the circuit board assembly has an energy management mechanism installed on its front top surface.

[0008] Preferably, the circulating water cooling structure includes heat dissipation fins evenly distributed at the bottom of the circuit board assembly. A circulation pipe runs symmetrically through the interior of the heat dissipation fins. An input pipe is fixedly connected to the input end of the circulation pipe. A refrigerant storage box is fixedly connected to the input end of the input pipe. The refrigerant storage box is fixedly connected to the front side of the protective shell.

[0009] Preferably, the circulating water cooling structure further includes a heat-conducting box fixedly installed at the output end of the circulating pipeline. The front end of the heat-conducting box is connected to an output pipe, and a micro water pump is installed at the front end of the output pipe. The output end of the micro water pump is fixedly connected to a refrigerant storage box.

[0010] Using the above technical solution, the coolant in the circulation pipeline circulates under the drive of a micro water pump. It efficiently absorbs the heat generated by the circuit board assembly through the heat dissipation fins and flows back to the coolant storage box through the heat conduction box and the output pipe, forming a closed-loop heat dissipation system. This significantly improves the heat dissipation efficiency of the circuit board assembly and provides a basic heat dissipation guarantee for solving the condensation problem.

[0011] Preferably, the sliding cleaning mechanism includes absorbent sponges symmetrically sliding and adhering to the upper and lower sides of a heat dissipation fin. A fixing plate is fixedly installed on the inner side of the absorbent sponge, and a transmission plate is fixedly installed at both ends of the fixing plate. Limiting rods pass through the interior of the transmission plate at the front end and rear end bottom. The absorbent sponge and the fixing plate are slidably connected to the limiting rods through the transmission plates. A heat insulation shell is fixedly connected to both ends of the limiting rods. The heat insulation shell is fixedly connected to a protective shell. The protective shell has openings for steam dissipation. When the transmission plate moves to its outer limit, it is tightly fitted with the protective shell. When the absorbent sponge moves to its outer limit, it is tightly fitted with the heat-conducting box.

[0012] Preferably, the sliding cleaning mechanism further includes a threaded transmission rod that passes through the transmission plate at the top rear end. Both ends of the threaded transmission rod are rotatably connected to the insulation shell. A micro servo motor is fixedly connected to the left end of the threaded transmission rod. The micro servo motor is fixedly connected to the insulation shell. The threads at both ends of the threaded transmission rod are reversed. The threaded transmission rod, in conjunction with the limiting rod, drives the transmission plate, the fixed plate, and the water-absorbing sponge to move in opposite directions.

[0013] Using the above technical solution, the water-absorbing sponge is closely attached to the heat dissipation fins, which can directly absorb the water droplets condensed on its surface and the circulation pipes. The limiting rod ensures the stability of the sliding process. The heat insulation shell reduces the impact of the external temperature difference on the interior. The close fit between the water-absorbing sponge and the heat-conducting box can utilize the heat of the coolant in the circulating water cooling structure to dry the water-absorbing sponge. The pores of the protective shell help the steam after the condensate evaporates to dissipate. The fit design at the outer limit position ensures that the cleaning range is fully covered, effectively preventing condensate from corroding electronic components. A miniature servo motor drives a threaded transmission rod to rotate. Utilizing the reverse thread characteristics at both ends, and in conjunction with a limit rod, it drives an absorbent sponge to achieve reciprocating motion in opposite directions. This automatically completes the thorough wiping and cleaning of the heat sink fins, improving the thoroughness and convenience of condensate removal. It can continuously ensure heat dissipation without manual intervention.

[0014] Preferably, the ventilation and heat dissipation mechanism includes a flow guide shroud that is equally spaced and fitted onto the front end of the protective shell. A support frame is fixedly installed on the inner ring of the flow guide shroud. A micro drive motor is fixedly connected to the inner ring of the support frame. A heat dissipation fan blade assembly is fixedly installed on the shaft end of the micro drive motor. A flow collector shroud is fixedly connected to the rear end of the flow guide shroud.

[0015] Preferably, the ventilation and heat dissipation mechanism further includes a second heat dissipation fin that penetrates and is fixed to the top of the refrigerant storage box. The rear end of the second heat dissipation fin is in contact with the front side of the air guide shroud. Ventilation slots are provided at equal intervals on the left and right sides of the protective shell. A protective cover is fixedly installed on the surface of the protective shell outside the ventilation slots. A filter screen is fixedly installed at the bottom of the protective cover.

[0016] Preferably, the ventilation slot is opened at an angle, and the protective cover and filter screen form a wrap-around protective structure for the ventilation slot.

[0017] Using the above technical solution, the micro drive motor drives the cooling fan blade assembly to rotate, and the air guide shroud and the air collector shroud concentrate the heat inside the protective shell to the outside, accelerate the air convection inside the protective shell, quickly remove the heat that the circulating water cooling structure has not dissipated in time, and form a synergistic heat dissipation with the circulating water cooling structure to further improve the overall heat dissipation efficiency. The heat dissipation fins are attached to the air guide, allowing the airflow generated by the fan blades to quickly dissipate heat from the coolant in the coolant storage box, enhancing the coolant's ability to absorb heat again. The slanted ventilation slots, protective cover, and filter ensure airflow between the inside and outside while effectively blocking external dust and moisture from entering, protecting internal components from contamination. The slanted ventilation slots also reduce the direct intrusion of rainwater and dust into the equipment. The enveloping structure of the protective cover and filter further strengthens protection, ensuring ventilation and heat dissipation while improving the equipment's dustproof and waterproof performance and extending its service life.

[0018] Preferably, the energy management mechanism includes a heat dissipation fin three that runs through and is fixed to the top of the collector shroud, and an output terminal block is fixedly installed at the top of the heat dissipation fin three, the output terminal block corresponding to the output protective sleeve.

[0019] Preferably, the energy management mechanism further includes contact seats installed at equal intervals at the rear end of the output terminal block. A rotating conductive plate is rotatably installed on the inner side of the contact seat. A positioning ring is fixedly installed at the rear end of the rotating conductive plate. A plug rod slides through the inside of the positioning ring. A return spring is sleeved on the outer ring of the plug rod at the top of the positioning ring. The two ends of the return spring are fixedly connected to the plug rod and the positioning ring, respectively. The plug rod and the positioning ring form a telescopic structure through the return spring. Connector seat one, connector seat two, and connector seat three are respectively installed on the top surface of the front end of the circuit board assembly. Plug rings are embedded at equal intervals inside the front ends of connector seat one, connector seat two, and connector seat three. The plug rings are movably plugged into the plug rod.

[0020] Using the above technical solution, the rotating conductive plate can be rotated to adjust its position, and the plug rod can be flexibly plugged into different plug rings of the corresponding connector under the action of the reset spring, so as to achieve selective conduction between the output terminal and connector one, two, and three, thereby dynamically switching the power output path. It can be flexibly adjusted according to the load distribution, grid status, and other requirements, improving the flexibility and overall effect of energy management.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: This photovoltaic inverter structure with energy management function, through the design of a circulating water cooling structure, a sliding cleaning mechanism, a ventilation and heat dissipation mechanism, and an energy management mechanism, collaboratively solves the problems of condensate erosion, insufficient heat dissipation efficiency, and fixed output path of photovoltaic inverters under temperature and humidity differences. This significantly improves the practicality, heat dissipation stability, and energy management flexibility of the equipment, and extends its service life. Specific details are as follows: Heat is absorbed by the heat sink fins close to the circuit board assembly. The micro water pump drives the coolant to circulate in a closed-loop system consisting of the circulation pipe, input pipe, coolant storage box, heat conduction box and output pipe. This efficiently removes the heat generated by the circuit board assembly, forming a stable basic heat dissipation system, which provides core support for preventing condensation accumulation and improving heat dissipation efficiency. The absorbent sponge fits tightly against the heat sink fins and circulation pipes, directly absorbing condensed water droplets and preventing them from corroding electronic components. A miniature servo motor drives a reverse-threaded transmission rod, which, together with a limit rod, enables the absorbent sponge to automatically reciprocate, fully covering the heat dissipation area and completing thorough cleaning without manual intervention. The insulation shell reduces the impact of external temperature differences on the interior, and when the absorbent sponge moves to its limit position, it fits against the heat-conducting box, utilizing the heat from the circulating coolant to dry the sponge and prevent it from remaining damp for too long, thus maintaining the cleaning effect. The pores in the protective shell help dissipate evaporative vapors, further reducing internal moisture accumulation and effectively solving the problems of condensation corroding components and affecting heat dissipation. A miniature drive motor drives the cooling fan blades to rotate, which, together with the air guide and air collector, accelerates the internal air convection and quickly removes the heat that the circulating water cooling structure has not dissipated in time. The second heat dissipation fin is in close contact with the air guide, and the heat of the coolant in the coolant storage box is quickly dissipated through the airflow, which enhances the coolant's ability to absorb heat again. Together with the circulating water cooling structure, it forms a "water cooling combined with air cooling" synergistic heat dissipation, which significantly improves the overall heat dissipation efficiency. The slanted ventilation slots, protective cover, and filter screen form a wrap-around protection, which effectively blocks the intrusion of external dust, rain and water vapor while ensuring the circulation of internal and external air, reducing the risk of internal component contamination. The rotating conductive plate can rotate flexibly and, together with the plug rod driven by the reset spring, selectively plug into the plug rings of different connectors to realize the switching of the output terminal block with different circuit paths. This breaks the limitation of fixed output interface and can dynamically adjust the power output path according to load distribution, grid status or energy dispatch requirements, greatly improving the flexibility of energy management. Meanwhile, the heat dissipation fins and three-through current collector cover use the airflow generated by the ventilation and heat dissipation mechanism to quickly dissipate the heat generated by the current passing through the output terminal block, ensuring the working stability of the output interface. The circulating water cooling structure works in conjunction with the ventilation and heat dissipation mechanism. By combining liquid cooling heat absorption with air cooling heat dissipation, the heat dissipation efficiency is enhanced, and the condensation problem caused by local overheating is reduced. The heat dissipation fins of the energy management mechanism rely on the airflow of the ventilation and heat dissipation mechanism to ensure heat dissipation. All the structures cooperate with each other to form an integrated system of "heat dissipation, anti-condensation and flow regulation", which comprehensively improves the overall performance of the photovoltaic inverter. Attached Figure Description

[0022] Figure 1 This is a side view of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective shell of the present invention; Figure 3 This is a schematic diagram showing the distribution of the circulating water cooling structure and sliding cleaning mechanism inside the protective shell of the present invention; Figure 4 This is a side view of the circulating water cooling structure of the present invention; Figure 5 This is a schematic diagram of the connection structure between the circulating water cooling structure and the sliding cleaning mechanism of the present invention; Figure 6 This is a side view of the sliding cleaning mechanism of the present invention. Figure 7 This is a schematic diagram of the linkage between the ventilation and heat dissipation mechanism and the circulating water cooling structure of the present invention; Figure 8 This is a side sectional view of the ventilation and heat dissipation mechanism of the present invention; Figure 9 This is a schematic diagram of the connection structure between the energy management mechanism and the ventilation and heat dissipation mechanism of the present invention; Figure 10 This is a side view of the energy management mechanism of the present invention.

[0023] In the diagram: 1. Protective outer shell; 2. Removable top cover; 3. Circuit board assembly; 4. Heat sink fin 1; 5. Circulation pipeline; 6. Input pipe; 7. Refrigerant storage box; 8. Heat-conducting box; 9. Output pipe; 10. Miniature water pump; 11. Absorbent sponge; 12. Fixing plate; 13. Transmission plate; 14. Limiting rod; 15. Threaded transmission rod; 16. Miniature servo motor; 17. Insulation shell; 18. Flow guide; 19. Support frame; 20. Miniature drive motor; 2 1. Cooling fan blade assembly; 22. Collector shroud; 23. Cooling fin 2; 24. Protective cover; 25. Filter screen; 26. Ventilation slot; 27. Input tube sleeve; 28. Input terminal block; 29. ​​Output tube sleeve; 30. Cooling fin 3; 31. Output terminal block; 32. Contact seat; 33. Rotating conductive plate; 34. Positioning ring; 35. Plug-in rod; 36. Return spring; 37. Connector 1; 38. Connector 2; 39. Connector 3; 40. Plug-in ring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-10 This invention provides a technical solution: a photovoltaic inverter structure with energy management function, including a protective shell 1, a detachable top cover 2 movably installed on the top of the protective shell 1, a circuit board assembly 3 fixedly installed inside the protective shell 1, a circulating water cooling structure between the bottom of the circuit board assembly 3 and the inner bottom surface of the protective shell 1 for heat conduction and dissipation of heat generated by the circuit board assembly 3, the circulating water cooling structure including heat dissipation fins 4 evenly distributed at the bottom of the circuit board assembly 3, a circulating pipe 5 symmetrically passing through the interior of the heat dissipation fins 4, an input pipe 6 fixedly connected to the input end of the circulating pipe 5, a refrigerant storage box 7 fixedly connected to the input end of the input pipe 6, the refrigerant storage box 7 fixedly connected to the front side of the protective shell 1, the circulating water cooling structure also includes a heat conduction box 8 fixedly installed at the output end of the circulating pipe 5, an output pipe 9 connected to the front end of the heat conduction box 8, a micro water pump 10 installed at the front end of the output pipe 9, and the output end of the micro water pump 10 fixedly connected to the refrigerant storage box 7; In the above structure design, after the micro water pump 10 is started as a power source, it drives the coolant in the coolant storage box 7 to enter the circulation pipe 5 through the input pipe 6. Since the circulation pipe 5 symmetrically runs through the heat dissipation fins 4 at the bottom of the circuit board assembly 3, and the heat dissipation fins 4 are in direct contact with the circuit board assembly 3, the heat generated by the circuit board assembly 3 during operation will be quickly transferred to the heat dissipation fins 4. At this time, the coolant in the circulation pipe 5 absorbs the heat on the fins through close contact with the heat dissipation fins 4, thereby reducing the temperature of the circuit board assembly 3. After absorbing the heat, the coolant flows along the circulation pipe 5 to the output end, enters the heat conduction box 8, and is collected by the heat conduction box 8. It is then pumped back to the coolant storage box 7 by the micro water pump 10 through the output pipe 9, completing one closed-loop cycle. During this process, the heat dissipation fins 4 increase the contact area with the circuit board assembly 3, thereby improving the heat transfer efficiency. The circulation pipe 5 acts as a carrier for the coolant, transferring the absorbed heat from the vicinity of the circuit board assembly 3 to the circulation system. Meanwhile, the micro water pump 10 continuously provides power to ensure uninterrupted circulation of the coolant, thereby achieving continuous heat conduction and dissipation of the heat generated by the circuit board assembly 3.

[0026] The circulating water cooling structure has sliding cleaning mechanisms attached to its upper and lower sides for removing condensate. These mechanisms include absorbent sponges 11 symmetrically slidably attached to the upper and lower sides of the heat dissipation fins 4. A fixing plate 12 is fixedly installed on the inner side of the absorbent sponge 11, and transmission plates 13 are fixedly installed at both ends of the fixing plate 12. Limiting rods 14 pass through the interior of the transmission plates 13 at the front and rear ends. The absorbent sponge 11 and the fixing plate 12 are slidably connected to the limiting rods 14 via the transmission plates 13. Insulation shells 17 are fixedly connected to both ends of the limiting rods 14. The insulation shells 17 are fixedly connected to the protective shell 1, which has openings for steam dissipation. When the transmission plate 13 moves to the outer limit, it fits tightly against the protective shell 1. When the water-absorbing sponge 11 moves to the outer limit, it fits tightly against the heat-conducting box 8. The sliding cleaning mechanism also includes a threaded transmission rod 15 that passes through the interior of the transmission plate 13 at the rear top. The two ends of the threaded transmission rod 15 are rotatably connected to the heat-insulating shell 17. A micro servo motor 16 is fixedly connected to the left end of the threaded transmission rod 15. The micro servo motor 16 is fixedly connected to the heat-insulating shell 17. The threads at both ends of the threaded transmission rod 15 are reversed. The threaded transmission rod 15, together with the limit rod 14, drives the transmission plate 13, the fixed plate 12 and the water-absorbing sponge 11 to move in opposite directions. In the above structure design, after the micro servo motor 16 is started as the power source, it drives the threaded transmission rod 15 fixedly connected to it to rotate. Since the threads at both ends of the threaded transmission rod 15 are reversed, and the transmission plate 13 at the top of the rear end is threadedly connected to the threaded transmission rod 15, and the transmission plates 13 at the front end and the bottom of the rear end are limited and guided by the limiting rod 14, the rotation of the threaded transmission rod 15 will be converted into the sliding of the transmission plates 13 in opposite directions. That is, the transmission plates 13 on both sides move closer or further away from each other along the limiting rod 14. The sliding of the transmission plates 13 drives the fixed plate 12 and the water-absorbing sponge 11 to move synchronously. Since the water-absorbing sponge 11 slides symmetrically against the upper and lower sides of the heat sink fin 4, it will tightly wipe the surface of the heat sink fin 4 and the circulation pipe 5 that runs through it during its movement, directly absorbing the water droplets condensed on the surface, and avoiding the accumulation of condensate water that corrodes the components. When the absorbent sponge 11 moves to its outermost limit position, it will be in close contact with the heat-conducting box 8. At this time, the coolant flowing inside the heat-conducting box 8 is the coolant after absorbing heat. The heat can be used to dry the absorbent sponge 11, so that the absorbent sponge 11 can regain its water absorption capacity. At the same time, the absorbent sponge 11 will be squeezed by the heat-conducting box 8 during the process of being in contact with it, thereby squeezing out the water inside the absorbent sponge 11 and discharging it through the pores on the heat insulation shell 17. The pores opened in the protective shell 1 can also be used to discharge the water vapor evaporated during the drying process of the absorbent sponge 11 in time, keeping the inside dry. When the transmission plate 13 moves to its outermost limit, it is in close contact with the protective shell 1, ensuring that the cleaning range covers the entire area of ​​the heat dissipation fins 4, with no dead corners to be cleaned. Driven by the reciprocating motion of the micro servo motor 16, the water-absorbing sponge 11 achieves a cycle of "absorbing condensate, sticking to the heat-conducting box 8 to dry, and absorbing again". It can continuously remove condensate from the surface of the circulating water-cooling structure without manual intervention, ensuring heat dissipation efficiency and component safety.

[0027] Ventilation and heat dissipation mechanisms are installed at the front end and left and right sides of the protective shell 1 to achieve ventilation and heat dissipation inside the protective shell 1, and in conjunction with the circulating water cooling structure to achieve heat dissipation of the coolant. The ventilation and heat dissipation mechanism includes a guide shroud 18 that is equally spaced and fitted at the front end of the protective shell 1. A support frame 19 is fixedly installed on the inner ring of the guide shroud 18. A micro drive motor 20 is fixedly connected to the inner ring of the support frame 19. A cooling fan blade assembly 21 is fixedly installed on the shaft end of the micro drive motor 20. A collector shroud 22 is fixedly connected to the rear end of the guide shroud 18. The ventilation and heat dissipation mechanism also includes a second heat dissipation fin 23 that penetrates and is fixed to the top of the coolant storage box 7. The rear end of the second heat dissipation fin 23 is in contact with the front side of the guide shroud 18. Ventilation slots 26 are equally spaced on the left and right sides of the protective shell 1. A protective cover 24 is fixedly installed on the surface of the protective shell 1 outside the ventilation slots 26. A filter screen 25 is fixedly installed at the bottom end of the protective cover 24. The ventilation slots 26 are opened in an oblique structure. The protective cover 24 and the filter screen 25 form a wrap-around protective structure for the ventilation slots 26. With the above-mentioned structure, after the micro drive motor 20 starts, the heat dissipation fan blade assembly 21 at the drive shaft end rotates at high speed. With the cooperation of the guide shroud 18 and the collector shroud 22, a directional airflow is formed, which guides the internal hot air out and accelerates the convection between the internal air and the external environment. At this time, the oblique ventilation slots 26 on the left and right sides of the protective shell 1 serve as auxiliary air intake channels. After the external air is filtered by the protective cover 24, it is further purified by the filter screen 25 and then enters the interior through the oblique ventilation slots 26. Together with the airflow guided by the collector shroud 22, it quickly removes the residual heat emitted by the circuit board assembly 3 and the circulating water cooling structure, and finally exits from the front guide shroud 18, forming a complete ventilation cycle of "air intake, heat exchange, and exhaust". Meanwhile, the ventilation and heat dissipation mechanism and the circulating water cooling structure work together to dissipate heat. The heat dissipation fins 23 on the top of the coolant storage box 7 are directly attached to the front side of the guide shroud 18. When the airflow generated by the heat dissipation fan blade assembly 21 flows through the heat dissipation fins 23, it will quickly carry away the heat absorbed by the coolant. In the circulating water cooling system, the coolant that has absorbed the heat of the circuit board flows back to the coolant storage box 7, and the heat is transferred to the heat dissipation fins 23, which lowers the temperature of the coolant and improves its efficiency in re-entering the circulation pipe 5 to absorb heat, thus enhancing the heat dissipation effect of the circulating water cooling. In addition, the angled ventilation slots 26 can reduce the direct vertical intrusion of rainwater and dust into the equipment. The enveloping structure of the protective cover 24 and the filter screen 25 further intercepts external impurities, ensuring ventilation efficiency while protecting internal components from contamination and extending the service life of the equipment.

[0028] The protective housing 1 has input sheath sleeves 27 installed at equal intervals at its rear end. The circuit board assembly 3 has input terminal blocks 28 installed at equal intervals on its rear top surface, with the input terminal blocks 28 corresponding to the input sheath sleeves 27. The protective housing 1 has output sheath sleeves 29 installed at equal intervals at its front end. The circuit board assembly 3 has an energy management mechanism installed on its front top surface. The energy management mechanism includes heat dissipation fins 30 that penetrate and are fixed to the top of the collector shroud 22. An output terminal block 31 is fixedly installed at the top of the heat dissipation fins 30, with the output terminal block 31 corresponding to the output sheath sleeves 29. The energy management mechanism also includes contact seats 32 installed at equal intervals at the rear end of the output terminal block 31. The inner side of the contact seats 32 can rotate. A rotating conductive plate 33 is installed, and a positioning ring 34 is fixedly installed at the rear end of the rotating conductive plate 33. A plug rod 35 slides through the inside of the positioning ring 34. A return spring 36 is sleeved on the outer ring of the plug rod 35 at the top of the positioning ring 34. The two ends of the return spring 36 are fixedly connected to the plug rod 35 and the positioning ring 34 respectively. The plug rod 35 and the positioning ring 34 form a telescopic structure through the return spring 36. Connector seat 1 37, connector seat 2 38 and connector seat 39 are respectively installed on the top surface of the front end of the circuit board assembly 3. Plug rings 40 are equally spaced inlaid inside the front end of connector seat 1 37, connector seat 2 38 and connector seat 39. The plug rings 40 are movably plugged into the plug rod 35. In the above structure design, the input protective sleeve 27 at the rear end of the protective shell 1 is used to insert external input cables. It corresponds one-to-one with the input terminal block 28 on the top surface of the rear end of the circuit board assembly 3. After the input cable passes through the input protective sleeve 27, it is directly connected to the corresponding input terminal block 28, so as to realize the stable input of external power to the circuit board assembly 3. The input protective sleeve 27 also plays a role in protecting and fixing the input cable, preventing the cable from shaking or being corroded by the external environment. The output terminal block 31 connects to the external output cable via the output sheath 29 at the front end of the protective housing 1. Each terminal block corresponds to one of the output sheaths 29, ensuring a stable connection and protection for the output cable. The contact seat 32 at the rear end of the output terminal block 31 provides rotational support for the rotating conductive plate 33. The rotating conductive plate 33 can rotate flexibly around the contact seat 32, thereby changing the orientation of its rear positioning ring 34 and plug rod 35. The plug rod 35 inside the positioning ring 34 remains extended under the elastic force of the return spring 36. When the rotating conductive plate 33 rotates to the aligned connection position... When connecting to connector 37, connector 38, or connector 39, the plug rod 35 will be inserted into the plug ring 40 at the front end of the corresponding connector, realizing the conductive connection between the rotating conductive plate 33 and the connector. Since connector 37, connector 38, and connector 39 correspond to different output paths, by adjusting the rotation of the rotating conductive plate 33 and cooperating with the plug rod 35 and different plug rings 40, selective conduction between the output terminal block 31 and different output paths can be achieved, thereby dynamically switching the power output path according to the load distribution, grid status, and other requirements. The output terminal block 31 is fixed to the top of the heat sink fin 30, and the heat sink fin 30 passes through the top of the current collector 22. When the current collector 22 is working, it will guide the airflow. The airflow flowing through the heat sink fin 30 can quickly remove the heat generated by the current passing through the output terminal block 31, preventing it from being affected by overheating and damaged, thus ensuring the stable operation of the output terminal.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic inverter structure with energy management function, comprising a protective shell (1), a detachable top cover (2) movably mounted on the top of the protective shell (1), and a circuit board assembly (3) fixedly installed inside the protective shell (1), characterized in that: a circulating water cooling structure is arranged between the bottom of the circuit board assembly (3) and the inner bottom surface of the protective shell (1) for heat conduction and dissipation of heat generated by the circuit board assembly (3); a sliding cleaning mechanism is slidably attached to the upper and lower sides of the circulating water cooling structure for removing condensed water; a ventilation and heat dissipation mechanism is installed on the front end and both sides of the protective shell (1) for ventilation and heat dissipation inside the protective shell (1) and combined with the circulating water cooling structure to achieve heat dissipation of the cooling liquid; input pipe sleeves (27) are installed at equal intervals on the rear end of the protective shell (1), and input terminals (28) are installed at equal intervals on the top surface of the rear end of the circuit board assembly (3), with the input terminals (28) corresponding to the input pipe sleeves (27); output pipe sleeves (29) are installed at equal intervals on the front end of the protective shell (1), and an energy management mechanism is installed on the top surface of the front end of the circuit board assembly (3).

2. The photovoltaic inverter structure with energy management function according to claim 1, characterized in that: The circulating water cooling structure comprises heat dissipation fins (4) distributed at equal intervals on the bottom of the circuit board assembly (3), the circulating water cooling structure further comprises a circulating pipe (5) symmetrically penetrating through the heat dissipation fins (4), an input pipe (6) fixedly connected to the input end of the circulating pipe (5), and a refrigerant storage box (7) fixedly connected to the input end of the input pipe (6), with the refrigerant storage box (7) fixedly connected to the front side of the protective shell (1).

3. The photovoltaic inverter structure with energy management function according to claim 2, characterized in that: The circulating water cooling structure further comprises a heat conduction box body (8) fixedly installed on the output end of the circulating pipe (5), an output pipe (9) connected to the front end of the heat conduction box body (8), and a micro water pump (10) installed on the front end of the output pipe (9), with the output end of the micro water pump (10) fixedly connected to the refrigerant storage box (7).

4. The photovoltaic inverter structure with energy management function according to claim 2, characterized in that: The sliding cleaning mechanism comprises water-absorbing sponges (11) symmetrically slidably attached to the upper and lower sides of the heat dissipation fins (4), a fixed plate (12) fixedly installed on the inner side of the water-absorbing sponges (11), and transmission plates (13) fixedly installed at both ends of the fixed plate (12), with a limiting rod (14) penetrating through the inside of the transmission plates (13) at the front end and the rear end bottom, the water-absorbing sponges (11) and the fixed plate (12) being slidably connected through the transmission plates (13) and the limiting rod (14), both ends of the limiting rod (14) being fixedly connected to a heat preservation shell (17), the heat preservation shell (17) being fixedly connected to the protective shell (1), the protective shell (1) being provided with apertures for steam emission, the transmission plates (13) being tightly attached to the protective shell (1) when moved to the outer limit, and the water-absorbing sponges (11) being tightly attached to the heat conduction box body (8) when moved to the outer limit.

5. The photovoltaic inverter structure with energy management function according to claim 4, characterized in that: The sliding cleaning mechanism further comprises a threaded transmission rod (15) penetrating through the inside of the transmission plate (13) at the top of the rear end, two ends of the threaded transmission rod (15) are rotationally connected with the heat preservation shell (17), the left end of the threaded transmission rod (15) is fixedly connected with a micro servo motor (16), the micro servo motor (16) is fixedly connected with the heat preservation shell (17), the threads at the two ends of the threaded transmission rod (15) are oppositely arranged, and the threaded transmission rod (15) drives the transmission plate (13), the fixed plate (12) and the water-absorbing sponge (11) to move towards each other and reversely move in cooperation with the limiting rod (14).

6. The photovoltaic inverter structure with energy management function according to claim 2, characterized in that: The ventilation and heat dissipation mechanism comprises a fairing (18) installed at the front end of the protective shell (1) at equal intervals, a support frame (19) is fixedly installed at the inner ring of the fairing (18), a micro drive motor (20) is fixedly connected with the inner ring of the support frame (19), a heat dissipation fan blade group (21) is fixedly installed at the shaft end of the micro drive motor (20), and a flow collector (22) is fixedly connected with the rear end of the fairing (18).

7. The photovoltaic inverter structure with energy management function according to claim 6, characterized in that: The ventilation and heat dissipation mechanism further comprises heat dissipation fins two (23) penetratingly fixed at the top of the refrigerant storage box (7), the rear end of the heat dissipation fins two (23) is attached to the front side of the fairing (18), ventilation grooves (26) are arranged at equal intervals at the left and right sides of the protective shell (1), a protective cover (24) is fixedly installed on the surface of the protective shell (1) outside the ventilation grooves (26), and a filter screen (25) is fixedly installed at the bottom end of the protective cover (24).

8. The photovoltaic inverter structure with energy management function according to claim 7, characterized in that: The ventilation grooves (26) are arranged in an inclined structure, and the protective cover (24) and the filter screen (25) form a wrapped protection structure for the ventilation grooves (26).

9. The photovoltaic inverter structure with energy management function according to claim 6, characterized in that: The energy management mechanism comprises heat dissipation fins three (30) penetratingly fixed at the top of the flow collector (22), an output terminal block (31) is fixedly installed at the top end of the heat dissipation fins three (30), and the output terminal block (31) corresponds to an output protective sleeve (29).

10. The photovoltaic inverter structure with energy management function according to claim 9, characterized in that: The energy management mechanism further comprises contact seats (32) installed at equal intervals at the rear end of the output terminal block (31), a rotating conductive plate (33) is rotationally installed at the inner side of the contact seat (32), a positioning ring (34) is fixedly installed at the rear end of the rotating conductive plate (33), a plug-in rod (35) slidingly penetrates through the inside of the positioning ring (34), a return spring (36) is sleeved on the outer ring of the plug-in rod (35) at the top of the positioning ring (34), two ends of the return spring (36) are fixedly connected with the plug-in rod (35) and the positioning ring (34) respectively, the plug-in rod (35) and the positioning ring (34) constitute an extension structure through the return spring (36), a connection seat one (37), a connection seat two (38) and a connection seat three (39) are installed at the front end top surface of the circuit board assembly (3) respectively, plug-in rings (40) are inlaid at equal intervals in the front end interiors of the connection seat one (37), the connection seat two (38) and the connection seat three (39), and the plug-in rings (40) are movably plug-in connected with the plug-in rod (35).

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