A compact low-voltage distributed photovoltaic power station grid-connected equipment

Abstract

The present invention relates to the field of photovoltaic power generation technology, and discloses a compact low-voltage distributed photovoltaic power station grid-connected equipment, including a cabinet, a cabinet door is arranged inside the cabinet, a heat dissipation slot is opened inside the cabinet door, a shock absorbing mechanism is arranged inside the cabinet door, a mounting plate is arranged on one side of the shock absorbing mechanism, and a quick-install component is arranged on one side of the mounting plate; the shock absorbing mechanism includes a connecting plate 1, the connecting plate 1 is fixedly connected to the inside of the cabinet, one side of the connecting plate 1 is rotatably connected to a connecting rod 1, one end of the connecting rod 1 is rotatably connected to a connecting rod 2, and one end of the connecting rod 2 is rotatably connected to a connecting plate 2. The response mechanism of the equipment when encountering external force impact is optimized by the shock absorbing mechanism and the suspended mounting plate, and the durability and reliability of the equipment are significantly improved by this buffering effect, and the risk of damage caused by external unpredictable factors is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic power generation, and in particular to a compact low-voltage distributed photovoltaic power station grid-connected equipment. Background Art

[0002] Photovoltaic power stations are facilities that use solar photovoltaic cells to convert sunlight into electrical energy. These power stations can be small rooftop systems or large ground-based power stations and are widely used in commercial, industrial and residential areas. The key components of photovoltaic power stations include photovoltaic panels, inverters, monitoring systems and electrical interface equipment. These systems are designed to maximize the use of sunlight and convert it into usable electrical energy while reducing environmental impact and providing a sustainable energy solution. Grid-connected equipment plays a vital role in photovoltaic power generation systems. Its main function is to convert the direct current generated by the photovoltaic system into alternating current that meets grid standards and transmit it safely and efficiently to the grid. The core component of the grid-connected equipment is the inverter, which is not only responsible for the conversion of electrical energy, but also for regulating voltage and frequency to ensure compatibility with the local power grid. In addition, modern grid-connected equipment also includes protection devices to prevent reverse flow in the event of a grid failure, as well as monitoring systems to track energy output and system performance in real time.

[0003] During the operation of grid-connected equipment in photovoltaic power stations, the equipment is often faced with various physical shocks from the natural environment and human operations. For example, during installation or daily maintenance, the equipment may accidentally fall, be hit, or be subjected to other forms of external forces. These shocks may directly act on sensitive components of the equipment, such as control modules, circuit boards, etc., which can easily cause hardware damage or functional failures. Traditional designs often do not consider sufficient impact protection measures, resulting in frequent failures or performance degradation of equipment in actual applications, affecting the overall stability and service life of the system.

[0004] The traditional photovoltaic grid-connected equipment installation process includes multiple complex steps, such as precise alignment of components, fixing and connecting multiple parts, and adjusting system configuration. These steps often require operators to have professional technical knowledge and use specific tools. In addition, once the equipment is installed, any future maintenance or upgrade work also requires disassembly and reassembly of multiple parts, which not only increases labor intensity, but may also cause equipment damage or installation errors due to improper operation. This complex installation and maintenance process significantly increases the overall maintenance cost of the equipment, reduces operating efficiency, and poses a challenge to user-friendliness.

[0005] In many photovoltaic power generation systems, especially in space-constrained installation environments such as rooftops or small ground stations, the design of the equipment fails to fully consider the optimal layout of internal components, which results in the system being unable to achieve maximum functional deployment within a limited space, affecting the overall power generation efficiency and functional scalability. At the same time, traditional high-voltage power transmission methods produce large losses during the power conversion and transmission process, which not only affects energy efficiency but may also increase the operating costs of the system. Therefore, it is extremely important for the grid-connected equipment of modern photovoltaic power stations to seek a design solution that can optimize space utilization and reduce energy losses while ensuring efficient energy conversion. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a compact low-voltage distributed photovoltaic power station grid-connected equipment, which solves the problem that the precision instruments of the equipment are easily damaged by external factors.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A compact low-voltage distributed photovoltaic power station grid-connected equipment, including a cabinet, a cabinet door is arranged inside the cabinet, a heat dissipation slot is opened inside the cabinet door, a shock absorbing mechanism is arranged inside the cabinet door, a mounting plate is arranged on one side of the shock absorbing mechanism, and a quick-install component is arranged on one side of the mounting plate;

[0008] The shock absorbing mechanism includes a connecting plate 1, which is fixedly connected to the inside of the cabinet, a connecting plate 1 is rotatably connected to a connecting rod 1 on one side, a connecting rod 1 is rotatably connected to a connecting rod 2 at one end, and a connecting rod 2 is rotatably connected to a connecting plate 2 at one end, a connecting plate 1 and a connecting plate 2 are both fixedly connected to docking columns on one side, a damper 1 is arranged between the docking columns, the outer walls of the docking columns are slidably connected to a fixed frame, the outer wall of the fixed frame is fixedly connected to a sliding frame, a sliding block is slidably connected to the inside of the sliding frame, one end of the connecting rod 1 and the other end of the connecting rod 2 are both rotatably connected to the inside of the sliding block, a damper 2 is arranged inside the sliding block, an output end of the damper 2 is fixedly connected to one side of the sliding block, and the other side of the connecting plate 2 is fixedly connected to the mounting plate.

[0009] Preferably, the quick-release assembly includes a fixing column 1, which is fixedly connected to the inside of the mounting plate, and a spring 1 is sleeved on the outer wall of the fixing column 1, one end of the spring 1 is fixedly connected to the inside of the mounting plate, and the other end of the spring 1 is fixedly connected to a connecting block 1, and the connecting block 1 is slidably connected to the outer wall of the fixing column 1.

[0010] Preferably, one side of the connecting block is fixedly connected to a splint 1, the inside of the splint 1 is fixedly connected to a fixing column 2, the outer wall of the fixing column 2 is sleeved with a spring 2, one end of the spring 2 is fixedly connected to the inside of the splint 1, and the other end of the spring 2 is fixedly connected to a connecting block 2.

[0011] Preferably, a sliding groove is provided inside the first clamping plate, the second connecting block is slidably connected inside the sliding groove, and the second connecting block is slidably connected to the outer wall of the second fixing column.

[0012] Preferably, one side of the second connecting block is fixedly connected with a second clamping plate, and a slope is provided at the bottom of the second clamping plate.

[0013] Preferably, a solid-state inverter module is arranged between adjacent clamping plates, a control module is arranged at the bottom of the solid-state inverter module, a monitoring module is arranged at the bottom of the control module, a grid-connected exchange module is arranged at the bottom of the monitoring module, and a lithium battery pack is arranged at the bottom of the grid-connected exchange module.

[0014] Preferably, a display screen is provided on the outer wall of the cabinet, and the display screen is electrically connected to the monitoring module.

[0015] Preferably, an emergency switch is provided on the outer wall of the cabinet, and the emergency switch is electrically connected to the grid-connected switching module.

[0016] Working principle: When the equipment encounters vibration caused by external factors, the corresponding precision equipment installed on the mounting plate is in a suspended state in the cabinet like the mounting plate. The vibration generated by the force on the corresponding cabinet will be transmitted to the connecting plate 1 first. At this time, the connecting plate 1 will drive the corresponding docking column and the corresponding docking column of the connecting plate 2 to transmit the force under the restriction of the fixed frame. The corresponding force will be buffered for the first time through the action of damper 1. At the same time, the inclination angle of the corresponding docking column will change, and the corresponding slider will be pushed to slide along the sliding frame. At this time, the connecting rod 2 will also change its inclination angle synchronously due to the sliding of the slider, so as to apply force to the damper 2 to achieve the second buffering. At this time, when the vibration force is transmitted from the connecting plate 2 to the mounting plate, the corresponding force is buffered and shock-absorbed twice, so as to reduce the impact on precision components. Correspondingly, when the solid-state inverter module and control need to be installed When installing modules, monitoring modules, grid-connected exchange modules and lithium battery packs, it is only necessary to pressurize the upper and lower clamping plates 2 of the corresponding layer of the corresponding module. At this time, the upper and lower sides of the two clamping plates 2 are squeezed through the inclined surface, so that the clamping plate 1 drives the corresponding connecting block 1 to slide along the fixing column 1, and at the same time, a pulling force is generated on the spring 1. After the module is pushed in, the clamping plate 2 is pulled so that the clamping plate 2 slides along the sliding groove under the restriction of the connecting block 2, so as to generate a pulling force on the spring 2. After the module enters between the clamping plates 1, the clamping plate 2 is released. At this time, the spring 2 will pull the connecting block 2 and the clamping plate 2 due to its own restorability, so that the module is fixed from one axial direction. At the same time, the corresponding spring 1 will also pull the connecting block 1 through its own restorability, so that the module can also be fixed in the other axial direction. The corresponding display screen can display the detection status in real time, and the emergency switch can be manually switched and closed when the equipment encounters an emergency.

[0017] The present invention provides a compact low-voltage distributed photovoltaic power station grid-connected equipment. It has the following beneficial effects:

[0018] 1. The present invention optimizes the response mechanism of the device when encountering external force impact through the shock-absorbing mechanism and the suspended mounting plate. This design enables the device to effectively absorb and disperse the impact force when subjected to external impacts such as falling and collision, and reduce the force directly transmitted to the sensitive module. Through this buffering effect, the durability and reliability of the device are significantly improved, and the risk of damage caused by external unpredictable factors is reduced.

[0019] 2. The present invention realizes the rapid installation of the module through the cooperation between the spring 1, the clamp 1 and the clamp 2. This mechanism not only simplifies the installation process and reduces the assembly time of the equipment, but also improves the accuracy and stability of the assembly. The user can easily install or replace the module without complicated tools or excessive technical support, thereby improving the efficiency of maintenance and upgrading.

[0020] 3. The present invention achieves the design goals of compactness and low-voltage distribution by modularizing the corresponding equipment functions. Each module independently assumes a specific function, which not only optimizes the space utilization inside the equipment and improves the overall performance of the system, but also facilitates the deployment of more functional units in a limited space. In addition, the low-voltage distributed design also reduces power loss and improves energy efficiency, while also meeting the environmental protection and energy efficiency requirements of modern energy equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a grid-connected device according to the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the cabinet of the present invention;

[0023] Figure 3 This is a distribution diagram of the internal structure of the cabinet of the present invention;

[0024] Figure 4 It is a schematic diagram of the shock absorbing mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the mounting plate of the present invention;

[0026] Figure 6 It is a schematic diagram of a part of the structure of the splint of the present invention;

[0027] Figure 7 for Figure 5 Enlarged view of point A in the middle.

[0028] Among them, 1. cabinet; 2. cabinet door; 3. heat sink; 4. mounting plate; 5. shock absorbing mechanism; 501. connecting plate 1; 502. connecting rod 1; 503. connecting rod 2; 504. connecting plate 2; 505. docking column; 506. damper 1; 507. slider; 508. slide frame; 509. damper 2; 510. fixed frame; 6. splint 1; 7. connecting block 1; 8. fixed column 1; 9. spring 1; 10. splint 2; 11. connecting block 2; 12. slide groove; 13. fixed column 2; 14. spring 2; 15. solid-state inverter module; 16. control module; 17. monitoring module; 18. grid-connected exchange module; 19. lithium battery pack; 20. display screen; 21. emergency switch. DETAILED DESCRIPTION

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

[0030] Example:

[0031] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a compact low-voltage distributed photovoltaic power station grid-connected equipment, including a cabinet 1, a cabinet door 2 is arranged inside the cabinet 1, a heat dissipation groove 3 is opened inside the cabinet door 2, a shock absorbing mechanism 5 is arranged inside the cabinet door 2, a mounting plate 4 is arranged on one side of the shock absorbing mechanism 5, and a quick-install component is arranged on one side of the mounting plate 4.

[0032] The shock absorbing mechanism 5 includes a connecting plate 501, which is fixedly connected to the inside of the cabinet 1. One side of the connecting plate 501 is rotatably connected to a connecting rod 502, one end of the connecting rod 502 is rotatably connected to a connecting rod 503, one end of the connecting rod 503 is rotatably connected to a connecting plate 504, one side of the connecting plate 501 and the connecting plate 504 are both fixedly connected to docking columns 505, a damper 506 is arranged between the docking columns 505, the outer walls of the docking columns 505 are slidably connected to a fixed frame 510, the outer wall of the fixed frame 510 is fixedly connected to a sliding frame 508, a slider 507 is slidably connected inside the sliding frame 508, one end of the connecting rod 502 and the other end of the connecting rod 503 are both rotatably connected inside the slider 507, a damper 2 509 is arranged inside the sliding frame 508, the output end of the damper 2 509 is fixedly connected to one side of the slider 507, and the other side of the connecting plate 2 504 is fixedly connected to the mounting plate 4.

[0033] Specifically, the precision equipment is installed on the suspended mounting plate 4 in the cabinet 1. This suspended state allows the cabinet 1 to respond dynamically when encountering external vibrations, thereby reducing the direct impact on the installed precision equipment; the vibration is first transmitted to the connecting plate 1 501, and then transferred to the connecting plate 2 504 through the docking column 505, and the vibration force is gradually dispersed in this process; in this process, the design of the docking column 505 allows it to slide relative to the fixed frame 510 when it is subjected to force, and the docking column 505 undergoes a slight position change under the restriction of the fixed frame 510. This change triggers the slider 507 to slide along the sliding frame 508, thereby affecting the connecting rod 2 503; this dynamic response mechanism allows the vibration force to be effectively buffered for the first time by the damper 1 506, and then the damper 2 509 further reduces the shock; the design of this two-stage buffering system not only significantly reduces the vibration intensity ultimately transmitted to the precision equipment, but also ensures that the operating stability and functional integrity of the equipment can be protected through this carefully designed vibration control structure even in the case of severe or unexpected vibrations in the external environment.

[0034] More specifically, the outer walls of the two docking posts 505 are each provided with a slide groove, and the outer wall of the fixed frame 510 is correspondingly provided with two sliders, and the sliders on the fixed frame 510 are respectively limited in the slide grooves on the docking posts 505, and the slide grooves on the docking posts 505 are opened along the extension direction of the docking posts 505 and are perpendicular to the slide frame 508. The sliders of the fixed frame 510 can slide in the slide grooves on the docking posts 505 along the extension direction of the slide grooves.

[0035] Please see attached Figure 4 -Attached Figure 7 The quick-install assembly includes a fixing column 8, a receiving groove is provided on the mounting plate 4, the fixing column 8 is fixedly connected to the inside of the receiving groove of the mounting plate 4, the outer wall of the fixing column 8 is sleeved with a spring 9, one end of the spring 9 is fixedly connected to the inside of the mounting plate 4, the other end of the spring 9 is fixedly connected to a connecting block 7, the connecting block 7 is slidably connected to the outer wall of the fixing column 8, one side of the connecting block 7 is fixedly connected to a clamping plate 6, the inside of the clamping plate 6 is fixedly connected to a fixing column 2 13, and the outer wall of the fixing column 2 13 is sleeved with a spring 2 14 One end of spring 2 14 is fixedly connected to the inside of splint 1 6, and the other end of spring 2 14 is fixedly connected to connecting block 2 11. A sliding groove 12 is provided inside splint 1 6, and connecting block 2 11 is slidably connected to the inside of the sliding groove 12. Connecting block 2 11 is slidably connected to the outer wall of fixed column 2 13, and one side of connecting block 2 11 is fixedly connected to splint 2 10. Splint 2 10 can be slidably arranged on splint 1 6 along the axial direction of fixed column 2 13 through connecting block 2 11, and an inclined surface is arranged at the end of splint 2 10 away from splint 1 6.

[0036] Among them, two upper and lower adjacent clamping plates 1 6 and two upper and lower adjacent clamping plates 2 10 are arranged opposite to each other to form a matching group, and the module is clamped and fixed on the clamping plates 1 6 and the clamping plates 2 10 of the same group.

[0037] Specifically, when the module is placed in the installation position, the operator first applies pressure on the upper and lower clamping plates 10 in the same group; this pressure application utilizes the inclined surface design to achieve the upward and downward squeezing of the clamping plates 10 in the same group, thereby starting the entire fixing process; through this squeezing, the clamping plate 6 is activated, driving the connecting block 7 to slide along the fixing column 8, and this sliding process simultaneously generates a pulling force on the spring 9; this mechanical action accurately controls the relative position of the clamping plate 6 and the module, ensuring that the module is stably fixed in the predetermined position; as the module is pushed into place, the operator pulls the clamping plate 10 to slide along the slide groove 12 under the restriction of the connecting block 11 The spring 14 is moved, further generating a pulling force on the spring 14; when the module completely enters between the clamping plates 6, the clamping plates 10 are released, and at this time, the spring 14 pulls the connecting block 11 and the clamping plates 10 under the action of its own restoring force, thereby fixing the module from the axial direction of the fixing column 13; at the same time, the spring 19 also pulls the connecting block 7 back through its own restoring force, thereby fixing the module from the axial direction of the fixing column 8; this double spring design not only ensures that the module is fixed more firmly, but also greatly improves the reliability of the installation, ensuring that the module can remain stable even in dynamic environments such as vibration, thereby reducing the equipment failure rate and extending the service life of the equipment.

[0038] Please see attached Figure 5 A solid-state inverter module 15 is arranged between the clamping plates 1 and 6, a control module 16 is arranged at the bottom of the solid-state inverter module 15, a monitoring module 17 is arranged at the bottom of the control module 16, a grid-connected switching module 18 is arranged at the bottom of the monitoring module 17, and a lithium battery pack 19 is arranged at the bottom of the grid-connected switching module 18.

[0039] Specifically, the solid-state inverter module 15 is located at the top layer of the device, and is mainly responsible for converting the direct current from the photovoltaic panel into alternating current that can be directly connected to the home or commercial power grid; this module uses high-efficiency solid-state electronic technology to control and convert the direction and form of the current through electronic switches to achieve high-efficiency and low-loss power conversion; the control module 16 is located below the solid-state inverter module 15 and is responsible for the operation management and performance optimization of the entire photovoltaic power generation system; it integrates an intelligent control algorithm that can automatically adjust system parameters according to real-time data to optimize power production; the monitoring module 17 is located below the control module 16 , used to monitor the power output, system efficiency and equipment status of the photovoltaic power generation system in real time; it collects data through sensors and other input devices to provide operators with detailed system operation reports and warnings; the grid-connected exchange module 18 is located below the monitoring module 17 and controls the connection between the photovoltaic system and the power grid; it ensures that the inverted AC power is safely and effectively connected to the power grid, and can automatically disconnect when a power grid failure occurs; the lithium battery pack 19 is located at the bottom of the device and is used to store excess electrical energy; this allows the photovoltaic system to store energy when the sun is sufficient and provide additional power when demand is peak or light is insufficient.

[0040] Please see attached Figure 4 A display screen 20 is provided on the outer wall of the cabinet 1 , and the display screen 20 is electrically connected to the monitoring module 17 . An emergency switch 21 is provided on the outer wall of the cabinet 1 , and the emergency switch 21 is electrically connected to the grid-connected switching module 18 .

[0041] Specifically, the display screen 20 provided on the outer wall of the cabinet 1 is directly electrically connected to the monitoring module 17 to provide real-time system information and an operation interface; the emergency switch 21 is electrically connected to the grid-connected switching module 18 to allow rapid disconnection of the system power supply in an emergency, thereby increasing the safety of the system; these designs enhance the friendliness of the user interface and the operational safety of the system, making system management more user-friendly and safe and controllable.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact low-voltage distributed photovoltaic power station grid-connected equipment, comprising a cabinet (1), characterized in that: The cabinet (1) is provided with a cabinet door (2), a heat dissipation slot (3) is provided inside the cabinet door (2), a shock absorbing mechanism (5) is provided inside the cabinet door (2), a mounting plate (4) is provided on one side of the shock absorbing mechanism (5), and a quick-install component is provided on one side of the mounting plate (4); The shock absorbing mechanism (5) comprises a connecting plate 1 (501), wherein the connecting plate 1 (501) is fixedly connected to the inside of the cabinet (1), one side of the connecting plate 1 (501) is rotatably connected to a connecting rod 1 (502), one end of the connecting rod 1 (502) is rotatably connected to a connecting rod 2 (503), one end of the connecting rod 2 (503) is rotatably connected to a connecting plate 2 (504), one side of the connecting plate 1 (501) and the connecting plate 2 (504) are both fixedly connected to docking posts (505), a damper 1 (506) is provided between the docking posts (505), and the docking posts (505) are connected to the connecting rods (506). The outer wall of the column (505) is slidably connected to a fixed frame (510), the outer wall of the fixed frame (510) is fixedly connected to a sliding frame (508), the interior of the sliding frame (508) is slidably connected to a slider (507), one end of the connecting rod 1 (502) and the other end of the connecting rod 2 (503) are both rotatably connected to the interior of the slider (507), a damper 2 (509) is arranged inside the sliding frame (508), the output end of the damper 2 (509) is fixedly connected to one side of the slider (507), and the other side of the connecting plate 2 (504) is fixedly connected to the mounting plate (4); The quick-install assembly comprises a fixing column (8), the fixing column (8) being fixedly connected to the inside of the mounting plate (4), a spring (9) being sleeved on the outer wall of the fixing column (8), one end of the spring (9) being fixedly connected to the inside of the mounting plate (4), and the other end of the spring (9) being fixedly connected to a connecting block (7), and the connecting block (7) being slidably connected to the outer wall of the fixing column (8); One side of the connecting block 1 (7) is fixedly connected to a clamping plate 1 (6), the inside of the clamping plate 1 (6) is fixedly connected to a fixing column 2 (13), the outer wall of the fixing column 2 (13) is sleeved with a spring 2 (14), one end of the spring 2 (14) is fixedly connected to the inside of the clamping plate 1 (6), and the other end of the spring 2 (14) is fixedly connected to the connecting block 2 (11); The first clamping plate (6) is provided with a sliding groove (12), the second connecting block (11) is slidably connected to the inside of the sliding groove (12), and the second connecting block (11) is slidably connected to the outer wall of the second fixing column (13); One side of the second connecting block (11) is fixedly connected with a second clamping plate (10), and the bottom of the second clamping plate (10) is provided with an inclined surface.

2. A compact low-voltage distributed photovoltaic power station grid-connected equipment according to claim 1, characterized in that: A solid-state inverter module (15) is arranged between adjacent clamping plates (6); a control module (16) is arranged at the bottom of the solid-state inverter module (15); a monitoring module (17) is arranged at the bottom of the control module (16); a grid-connected switching module (18) is arranged at the bottom of the monitoring module (17); and a lithium battery pack (19) is arranged at the bottom of the grid-connected switching module (18).

3. A compact low-voltage distributed photovoltaic power station grid-connected equipment according to claim 2, characterized in that: The outer wall of the cabinet (1) is provided with a display screen (20), and the display screen (20) is electrically connected to the monitoring module (17).

4. A compact low-voltage distributed photovoltaic power station grid-connected equipment according to claim 2, characterized in that: An emergency switch (21) is provided on the outer wall of the cabinet (1), and the emergency switch (21) is electrically connected to the grid-connected switching module (18).

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