Photovoltaic direct-driven variable-frequency refrigerating unit matched with box-type refrigeration house

Abstract

The invention relates to the technical field of box-type refrigeration equipment, in particular to a photovoltaic direct-driven frequency conversion refrigerating unit matched with a box-type refrigeration house. The device comprises box type refrigeration equipment, a supporting rack, a rotating disc, a circular ring supporting frame, a mounting ball, a sliding assembly, a telescopic rod, a connecting assembly and a folding power generation mechanism. The folding power generation mechanism realizes photovoltaic power generation through an expansion assembly, and can flexibly adjust the angle and position of a photovoltaic frame, thereby improving the photoelectric conversion efficiency. In addition, the device is further provided with a power storage mechanism, power can be continuously supplied when illumination is insufficient, and stable operation of the refrigeration equipment set is ensured. The effects of optimizing energy utilization, reducing energy consumption and improving the reliability and flexibility of the system are achieved.

Description

Technical Field

[0001] This application relates to the field of box-type refrigeration units, and in particular to a photovoltaic direct-drive variable frequency refrigeration unit for box-type cold storage. Background Technology

[0002] Container-type cold storage plays a vital role in modern cold chain logistics and food preservation. With rising energy costs and increasing environmental awareness, more and more companies are seeking energy-efficient refrigeration solutions. Traditional container-type cold storage typically relies on mains power, resulting in high energy consumption and expensive operating costs. To reduce operating costs and carbon emissions, various refrigeration unit designs utilizing renewable energy have emerged in recent years, among which photovoltaic direct-drive technology has received widespread attention due to its high efficiency and cost-effectiveness.

[0003] Currently, common design schemes for photovoltaic (PV) direct-drive chiller units mainly include fixed solar panels and manually adjustable PV mounting systems. While fixed solar panels are easy to install, they cannot automatically adjust their angle according to changes in sunlight, resulting in low photoelectric conversion efficiency. Manually adjustable PV mounting systems require frequent manual operation, making maintenance inconvenient and prone to failure. Furthermore, some schemes use simple mechanical structures to adjust the angle of the PV panels, but their adaptability and stability in complex environments remain insufficient. Especially under seasonal changes and day-night cycles, existing PV modules, due to their limited variable angle, struggle to effectively cope with changes in sunlight, further limiting their power generation efficiency.

[0004] Regarding the aforementioned technologies, the inventors believe that the main problem faced by existing photovoltaic direct-drive chiller units in practical applications is that the installation and adjustment methods of photovoltaic modules are not flexible enough, making it difficult to dynamically adjust them according to different time periods and weather conditions, thus affecting the overall system's power generation efficiency and reliability. Especially in complex and variable environments, ensuring that the photovoltaic system is always in optimal working condition and effectively extending the service life of the photovoltaic panels is a pressing technical challenge that needs to be solved. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a photovoltaic direct-drive variable frequency refrigeration unit for box-type cold storage.

[0006] This application provides a photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage, which adopts the following technical solution: A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage includes: a box-type refrigeration unit, and a support frame mounted on the box-type refrigeration unit; a load-bearing mechanism, the load-bearing mechanism including a rotating disk rotatably connected to the support frame, the rotating disk being connected to a rotation drive assembly, and a circular support frame mounted on the support frame, the circular support frame having a hemispherical groove, the bottom of the hemispherical groove having a mounting hole, and a mounting ball slidably connected within the hemispherical groove; an adjustment mechanism, the adjustment mechanism including a sliding assembly mounted on the rotating disk, the moving end of the sliding assembly having a telescopic rod, the telescopic rod being connected to the mounting ball via a connecting assembly; and a retractable power generation mechanism, the retractable power generation mechanism being mounted on the mounting ball for photovoltaic power generation.

[0007] By adopting the above technical solutions, this box-type cold storage unit equipped with a photovoltaic direct-drive inverter refrigeration unit not only achieves efficient and stable photovoltaic power generation but also allows for flexible adjustment of the photovoltaic modules. Specifically, the design of the support frame and rotating disk allows the entire system to adapt to different lighting angles, thereby improving photoelectric conversion efficiency. Simultaneously, the coordinated design of the hemispherical groove and mounting sphere ensures 360-degree omnidirectional adjustability of the photovoltaic modules, adapting to changes in the sun's direction. With the changing seasons and the sun's rise and fall throughout the day, the photovoltaic panels can be adjusted to the appropriate positions. Furthermore, by using a retractable power generation mechanism, some power generation components can be retracted when full power generation is not needed, stopping photovoltaic power generation and extending the lifespan of the photovoltaic panels as much as possible. In addition, precise position adjustment can be achieved by adjusting the sliding components and telescopic rods in the mechanism, further optimizing the utilization of solar energy. The retractable power generation mechanism also effectively solves the space occupation problem, improving the overall integration and portability of the equipment.

[0008] Preferably, the connecting assembly includes a connecting groove disposed on the mounting ball, a connecting ball being slidably connected in the connecting groove, and a mounting rod disposed on the connecting assembly, the mounting rod being connected to the telescopic rod.

[0009] By adopting the above technical solution, the design of the connecting components makes the connection between the mounting ball and the telescopic rod more flexible and reliable. Specifically, the connecting ball in the connecting groove can rotate in multiple directions, ensuring a stable connection at different angles. This allows for adjustment and maintenance of the photovoltaic module's position, utilizing photovoltaic power generation to reduce the energy consumption of the chiller unit, thereby improving the adaptability and stability of the entire system. Simultaneously, the mounting rod further enhances the connection strength, ensuring the structural stability under various operating conditions.

[0010] Preferably, the power generation mechanism includes a connecting frame and a photovoltaic frame mounted on the mounting ball. A first photovoltaic module is mounted on one end of the photovoltaic frame away from the supporting frame, and several extension components are also mounted on the photovoltaic frame.

[0011] By adopting the above technical solution, the retractable power generation mechanism can be stably fixed and adjusted on the mounting sphere, ensuring that the photovoltaic modules can effectively receive sunlight at different angles. The first photovoltaic module can directly generate photovoltaic power, improving energy utilization efficiency. At the same time, the design of the extension components allows the photovoltaic rack to further increase the photovoltaic area. When the light area is large and the light intensity is high, it can be extended to improve the overall power generation capacity, thereby better meeting the power demand of the box-type cold storage. It can also store excess electricity. In severe weather conditions such as sandbags or heavy rain, the surrounding extension components can be retracted to prevent the extended solar panels from being damaged by severe weather. In addition, by adjusting the position, some photovoltaic panels can be in working state and some in non-working state, alternating their operation to extend the service life of the photovoltaic panels.

[0012] Preferably, the extension component includes a rotating gear ring rotatably connected to the photovoltaic frame, an extension drive component connected to the rotating gear ring, the extension drive component being disposed on the photovoltaic frame, a drive plate being coaxially disposed on the rotating gear ring, a plurality of guide holes being evenly distributed on the drive plate, and extension components being disposed on the guide holes.

[0013] By adopting the above technical solution, the cooperation between the rotating gear ring and the extension drive component enables the extension components on the photovoltaic frame to achieve precise expansion and contraction, improving the working efficiency and reliability of the photovoltaic modules. The gear ring can move other extension components; its rotation drives the extension components to expand or contract. Simultaneously, the guide hole design ensures the stability and consistency of the extension components during movement, further enhancing the overall performance of the system.

[0014] Preferably, the extension component includes a guide rod disposed in the guide hole, one end of the guide rod being provided with a blocking block, the other end of the guide rod being provided with a guide block, and a guide slide rail disposed on the photovoltaic frame, the guide block being slidably connected to the guide slide rail, and a second photovoltaic module being disposed on the guide block.

[0015] By adopting the above technical solution, the design of the guide rod and blocking block effectively prevents the guide block from dislodging from the guide hole during movement, ensuring the stability and reliability of the structure. The cooperation between the guide block and the guide rail confirms the expansion direction while allowing the expansion components to move smoothly on the photovoltaic frame, improving the flexibility and efficiency of the photovoltaic power generation area. The installation of the second photovoltaic module further increases the power generation capacity of the photovoltaic system and improves the overall energy utilization efficiency of the device.

[0016] Preferably, the guide hole enables the guide block to move along the guide slide rail.

[0017] By adopting the above technical solution, the guide hole design enables the guide block to move precisely in a straight line along the guide rail, thereby ensuring the stability and accuracy of the extension component during deployment and retraction. This design not only improves the deployment and retraction efficiency of photovoltaic modules but also enhances the reliability and lifespan of the system.

[0018] Preferably, the extended drive assembly includes an extended motor mounted on the photovoltaic frame, the transmission end of the extended motor being provided with an extended gear, and the extended gear meshing with an extended gear ring.

[0019] By adopting the above technical solution, the extended motor can drive the extended gear to rotate, thereby driving the extended gear ring meshing with it to rotate. This design allows the guide holes on the drive plate to guide the guide rod to move precisely linearly along the guide rail, ensuring that each guide block and its second photovoltaic module can be smoothly deployed or retracted. This structure not only improves the working efficiency and stability of the photovoltaic module, but also effectively protects the safety of the photovoltaic module in the non-operating state and extends its service life.

[0020] Preferably, the sliding assembly includes two sets of connecting seats disposed on the rotating disk, an adjusting screw is disposed between the two sets of connecting seats, an adjusting drive assembly is disposed at one end of the adjusting screw, an adjusting slider is screw-driven on the adjusting screw, a positioning rod is also disposed between the two sets of connecting seats, the adjusting slider is slidably connected to the positioning rod, and the telescopic rod is disposed on the adjusting slider.

[0021] By adopting the above technical solution, the design of the sliding component allows the adjustment mechanism to precisely control the position and angle of the mounting ball. Specifically, the cooperation between the connecting seat and the adjusting screw ensures that the adjusting slider can move smoothly under the guidance of the positioning rod, thereby achieving precise adjustment of the mounting ball's position. This design not only improves the overall stability of the device but also enhances the angle adjustability of the photovoltaic module, enabling it to capture sunlight more effectively and improve photovoltaic power generation efficiency. Simultaneously, the addition of the adjustment drive component further simplifies the operation process and enhances the system's automation level.

[0022] Preferably, the telescopic rod includes a sleeve disposed on the adjusting slider, a sliding plate slidably connected inside the sleeve, a sliding rod disposed on the sliding plate, and the sliding rod connected to the mounting rod.

[0023] By adopting the above technical solutions, the design of the telescopic rod allows for flexible adjustment of the mounting ball's position, ensuring that the photovoltaic modules can achieve the optimal angle under different lighting conditions, thereby improving photovoltaic power generation efficiency. Simultaneously, the structural design of the sliding plate and sliding rod increases the system's stability and reliability, effectively reducing mechanical failures caused by external vibrations or wind, and extending the equipment's service life.

[0024] Specifically, it also includes an energy storage mechanism installed inside the box-type refrigeration unit.

[0025] By adopting the above technical solutions, the telescopic pole structure allows the mounting ball to be flexibly adjusted at different positions, adapting to different lighting angles and environmental conditions, thereby improving photovoltaic power generation efficiency. Simultaneously, the energy storage mechanism effectively stores excess electrical energy, ensuring a stable power supply to the chiller unit even during periods of insufficient sunlight, further enhancing system reliability and energy efficiency.

[0026] In summary, this application includes at least one of the following beneficial technical effects: By employing an adjustment mechanism comprised of a rotating disk, sliding components, and a telescopic rod, photovoltaic modules can achieve precise multi-angle adjustment, automatically adjusting their position according to changes in sunlight, significantly improving photoelectric conversion efficiency. Specifically, the helical drive design of the adjusting screw and slider allows the telescopic rod to move precisely in the horizontal direction, thereby driving the mounting ball to slide within the hemispherical groove, achieving omnidirectional angle adjustment of the photovoltaic module.

[0027] The retractable power generation mechanism is designed to allow photovoltaic modules to be folded and stored during non-use periods, saving space and effectively preventing damage from severe weather, thus extending their lifespan. The mechanism connects the photovoltaic frame to the mounting ball via a connecting bracket, while the guide holes and guide rails within the modules ensure stability and reliability during deployment and retraction.

[0028] It relies on solar energy technology for cooling and heating, uses BWLS energy system management, seamlessly switches between AC / DC dual power sources, and its core algorithm automatically adjusts the input of AC mains power according to the amount of photovoltaic power generation, resulting in extremely high solar thermal efficiency. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the sliding component of this application; Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of this application; Figure 4 yes Figure 3 An enlarged view of point A; Figure 5 yes Figure 3 An enlarged view of point B; Figure 6 yes Figure 5 An enlarged schematic diagram of point C.

[0030] Explanation of reference numerals in the attached drawings: 1. Box-type freezer; 2. Support frame; 3. Bearing mechanism; 31. Rotating disc; 32. Circular support frame; 33. Hemispherical groove; 34. Mounting hole; 35. Mounting ball; 4. Adjustment mechanism; 41. Sliding assembly; 411. Connecting seat; 412. Adjusting screw; 413. Adjustment drive assembly; 414. Adjusting slider; 415. Positioning rod; 42. Telescopic rod; 421. Sleeve; 422. Sliding plate; 423. Sliding rod; 43. Connecting assembly; 431. 432. Connecting groove; 433. Connecting ball; 434. Mounting rod; 5. Retractable power generation mechanism; 51. Photovoltaic frame; 52. First photovoltaic module; 53. Extension component; 531. Rotating gear ring; 532. Extension drive component; 5321. Extension motor; 5322. Extension gear; 533. Drive plate; 534. Guide hole; 535. Extension component; 5351. Guide rod; 5352. Blocking block; 5353. Guide block; 5354. Guide slide rail; 5355. Second photovoltaic module. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0032] This application discloses a photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage, see reference. Figure 1 The system includes a box-type refrigerator 1, a support frame 2, a load-bearing mechanism 3, an adjustment mechanism 4, and a retractable power generation mechanism 5. The support frame 2 is mounted on the box-type refrigerator 1. The load-bearing mechanism 3 includes a rotating disk 31 rotatably connected to the support frame 2, a rotating drive assembly connected to the rotating disk 31, and a circular support frame 32 mounted on the support frame 2. The circular support frame 32 has a hemispherical groove 33, with a mounting hole 34 at the bottom of the hemispherical groove 33, and a mounting ball 35 slidably connected within the hemispherical groove 33. The adjustment mechanism 4 includes a sliding assembly 41 mounted on the rotating disk 31, with a telescopic rod 42 at its moving end. The telescopic rod 42 is connected to the mounting ball 35 via a connecting assembly 43. The retractable power generation mechanism 5 is mounted on the mounting ball 35 and is used for photovoltaic power generation. It is electrically connected to both the energy storage mechanism and the box-type refrigerator 1.

[0033] Specifically, the support frame 2 can adopt a metal frame structure, such as aluminum alloy or steel, which has high strength and corrosion resistance. The height of the support frame 2 can be adjusted according to actual usage requirements to increase the stability and safety of the entire system. The rotating disk 31 can be connected to the support frame 2 through bearings to ensure its smooth rotation. The rotation drive component can be an electric motor, a hydraulic motor, or other form of power source, responsible for driving the rotating disk 31 to rotate around the vertical axis, realizing the horizontal angle adjustment of the photovoltaic modules. When the rotation drive component is started, the electric motor drives the rotating disk 31 to rotate, thereby causing the photovoltaic modules to rotate together to achieve the optimal angle of sunlight exposure at different times, further improving power generation efficiency.

[0034] Normally, the photovoltaic module is rotated by the rotating disk 31, which rotates along with the photovoltaic module. The opening and closing mechanism 5 is used to keep the photovoltaic module facing the sun throughout the day, improving power generation efficiency and increasing the service life of the photovoltaic module.

[0035] The circular support frame 32 is also made of high-strength material, and its interior has a hemispherical groove 33 to accommodate the mounting ball 35. The design of the mounting hole 34 allows the mounting ball 35 to move freely within the hemispherical groove 33, enabling multi-angle adjustment. The mounting ball 35 is made of a high-hardness material, such as stainless steel, which can withstand large loads while maintaining good wear resistance. The free movement of the mounting ball 35 allows the photovoltaic module to be finely adjusted in multiple directions to adapt to complex lighting conditions.

[0036] refer to Figure 2The sliding component 41 in the adjustment mechanism 4 includes two sets of connecting seats 411 mounted on the rotating disk 31. An adjusting screw 412 is positioned between these two sets of connecting seats 411. An adjustment drive component 413, which can be a stepper motor or a servo motor, is mounted at one end of the adjusting screw 412 to precisely control the rotation vector of the adjusting screw 412. An adjusting slider 414 is helically connected to the adjusting screw 412. A positioning rod 415 is also positioned between the two sets of connecting seats 411, and the adjusting slider 414 is slidably connected to the positioning rod 415 to ensure that the adjusting slider 414 moves in a straight line. A sleeve 421 is mounted on the adjusting slider 414, and a sliding plate 422 is slidably connected inside the sleeve 421. A sliding rod 423 is mounted on the sliding plate 422 and connected to the mounting rod 433. This design allows the telescopic rod 42 to extend and retract freely in multiple directions, achieving precise positioning of the mounting ball 35. When the adjustment drive assembly 413 is activated, the stepper motor or servo motor drives the adjustment screw 412 to rotate. In one embodiment not shown, it can also be adjusted by hand. This pushes the adjustment slider 414 to move along the positioning rod 415, and finally drives the mounting ball 35 to move within the hemispherical groove 33 via the sliding rod 423, thereby adjusting the tilt angle of the photovoltaic module. The screw adjustment has high precision and can finely control the orientation of the photovoltaic module. The position is usually adjusted by the screw after seasonal changes so that the rotating disk 31 can adapt to the trajectory of the sun throughout the day.

[0037] refer to Figure 3 , Figure 4 as well as Figure 5 The power generation mechanism 5 includes a connecting frame mounted on the mounting sphere 35, a photovoltaic frame 51, and a first photovoltaic module 52 mounted at the end of the photovoltaic frame 51 furthest from the supporting frame 2. Several extension components 53 are also mounted on the photovoltaic frame 51. The connecting frame secures the photovoltaic frame 51, ensuring its stability and reliability on the mounting sphere 35. The photovoltaic frame 51 can be made of lightweight materials, such as carbon fiber composites, which reduces weight without compromising strength. The first photovoltaic module 52 can be a monocrystalline silicon or polycrystalline silicon photovoltaic panel with high photoelectric conversion efficiency. The first photovoltaic module 52 absorbs solar energy and converts it into electrical energy, supplying it to the box-type chiller 1 and other electrical equipment.

[0038] The first photovoltaic module 52 is in continuous operation and is rotated to adapt to the sunlight in the morning and evening.

[0039] Figure 4 , Figure 5 as well as Figure 6The extension component 53 includes a rotating gear ring 531 rotatably connected to the photovoltaic frame 51. An extension drive component 532 is connected to the rotating gear ring 531 and is mounted on the photovoltaic frame 51. A drive plate 533 is coaxially mounted on the rotating gear ring 531. A plurality of guide holes 534 are evenly distributed on the drive plate 533, and extension components 535 are mounted on the guide holes 534. The extension motor 5321 can be a small DC motor, which drives the rotating gear ring 531 to rotate through the extension gear 5322, thereby causing the guide rod 5351 in the guide hole 534 on the drive plate 533 to move along a predetermined path. A blocking block 5352 is provided at one end of the guide rod 5351 to prevent the guide rod 5351 from dislodging, and a guide block 5353 is provided at the other end. The guide block 5353 is slidably connected to the guide rail 5354 on the photovoltaic frame 51, and a second photovoltaic module 5355 is mounted on the guide block 5353. This design not only increases the effective area of ​​the photovoltaic modules but also dynamically adjusts their layout according to sunlight conditions at different times, improving overall power generation efficiency. When the extension drive component 532 is activated, a small DC motor drives the rotating gear ring 531 to rotate via the extension gear 5322. The rotating gear ring 531 then drives the drive plate 533 to rotate, causing the guide hole 534 on the drive plate 533 to push the guide rod 5351 passing through it to move along the guide rail 5354, which in turn drives the guide block 5353 to move, thereby unfolding or retracting the second photovoltaic module 5355, maximizing the effective area of ​​the photovoltaic modules.

[0040] Generally speaking, it has the following three operating modes. 1. Sunny Day Mode: Zero Electricity Costs. On sunny days, the photovoltaic system can fully meet the unit's electricity needs and store electricity in the energy storage mechanism, achieving "zero electricity costs." When the light intensity exceeds a preset threshold, the control system triggers the sunny day mode. At this time, the extension drive component 532 of the retractable power generation mechanism 5 drives the rotating gear ring 531 to rotate, causing the extension component 535 to fully unfold along the guide rail 5354. The first photovoltaic module 52 and the second photovoltaic module 5355 work together to maximize the light-receiving area. The adjustment mechanism 4 drives the rotating disk 31 to rotate through the rotation drive component, and cooperates with the sliding component 41 and the telescopic rod 42 to drive the mounting ball 35 to slide in the hemispherical groove 33, so that the photovoltaic module always maintains an angle perpendicular to the sunlight. The electrical energy output by the photovoltaic system is directly supplied to the box-type refrigerator 1 after conversion by the external inverter. Excess electrical energy is stored through the energy storage mechanism. After the energy storage mechanism is fully charged, the control system cuts off the charging circuit.

[0041] 2. Cloudy Mode: Intelligent Compensation In cloudy or rainy weather with insufficient sunlight, the photovoltaic system provides partial power supply, with intelligent compensation from the mains power for seamless connection. When the light intensity is within a preset threshold range, the control system switches to cloudy mode, and the retractable generator 5 adjusts the extension range of the extension component 535 according to the light intensity to reduce the ineffective light-receiving area. The external power monitoring component collects the photovoltaic output power and the real-time power consumption of the box-type refrigerator 1 in real time. The control system calculates the difference between the two and generates a gap power signal, triggering the dual power switching module to operate, so that the mains power supplies the box-type refrigerator 1 according to the gap power. At the same time, the energy storage mechanism is in standby mode. When the photovoltaic power fluctuates instantaneously, it immediately releases electrical energy to fill the gap, ensuring that the sum of photovoltaic power supply and mains power supply is always equal to the real-time power consumption of the refrigerator.

[0042] 3. Night Mode: Direct Power Supply from Mains During the night, the photovoltaic system does not generate electricity and is entirely powered by the grid. At the same time, it uses the stored energy in the energy storage mechanism to reduce energy consumption. When the light intensity is lower than the preset threshold, the control system activates the night mode. The extension drive component 532 of the retractable power generation mechanism 5 drives the rotating gear ring 531 to rotate in the opposite direction, causing the extension component 535 to retract along the guide rail 5354, and the first photovoltaic module 52 stops working. The energy storage mechanism prioritizes power supply to the box-type refrigerator 1. The external power monitoring component detects the remaining power of the energy storage mechanism in real time. When the power is lower than the preset threshold, the control system triggers a switching signal, disconnects the energy storage mechanism circuit and connects the grid power circuit, so that the grid power continuously supplies power to the refrigerator.

[0043] The implementation principle of a photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to this application embodiment is as follows: Through the cooperation of the supporting frame 2 and the load-bearing mechanism 3, dual adjustment of the photovoltaic modules in both the horizontal and tilt directions is achieved, greatly improving the light utilization rate of the photovoltaic modules. The synergistic effect of the adjustment mechanism 4 and the retractable power generation mechanism 5 enables the photovoltaic modules to automatically adjust their angle according to changes in sunlight, always maintaining optimal working conditions. In addition, the design of the extension component 53 increases the effective area of ​​the photovoltaic modules, further enhancing the power generation capacity of the system. Overall, this embodiment effectively solves the problems existing in traditional photovoltaic direct-drive refrigeration units, significantly reduces energy consumption, and improves the stability and reliability of the system.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage, comprising: a box-type refrigeration unit (1), characterized in that: Also includes The support frame (2) is installed on the box-type freezer (1); The bearing mechanism (3) includes a rotating disk (31) rotatably connected to the support frame (2), the rotating disk (31) being connected to a rotation drive assembly, and also includes a circular support frame (32) provided on the support frame (2), the circular support frame (32) being provided with a hemispherical groove (33), the bottom of the hemispherical groove (33) being provided with a mounting hole (34), and a mounting ball (35) being slidably connected in the hemispherical groove (33); Adjustment mechanism (4), the adjustment mechanism (4) includes a sliding component (41) disposed on the rotating disk (31), the moving end of the sliding component (41) is provided with a telescopic rod (42), the telescopic rod (42) is connected to the mounting ball (35) through a connecting component (43); A photovoltaic power generation mechanism (5) is installed on the mounting ball (35) for photovoltaic power generation.

2. The photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 1, characterized in that: The connecting assembly (43) includes a connecting groove (431) disposed on the mounting ball (35), a connecting ball (432) is slidably connected in the connecting groove (431), a mounting rod (433) is disposed on the connecting ball (432), and the mounting rod (433) is connected to the telescopic rod (42).

3. The photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 2, characterized in that: The power generation mechanism (5) includes a photovoltaic frame (51) mounted on the mounting ball (35). A first photovoltaic module (52) is mounted on one end of the photovoltaic frame (51) away from the support frame (2). Several extension components (53) are also mounted on the photovoltaic frame (51).

4. The photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 3, characterized in that: The extension component (53) includes a rotating gear ring (531) rotatably connected to the photovoltaic frame (51), an extension drive component (532) is connected to the rotating gear ring (531), the extension drive component (532) is disposed on the photovoltaic frame (51), a drive plate (533) is coaxially disposed on the rotating gear ring (531), a plurality of guide holes (534) are evenly distributed on the drive plate (533), and an extension component (535) is disposed on the guide holes (534).

5. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 4, characterized in that: The extension component (535) includes a guide rod (5351) disposed in the guide hole (534), one end of the guide rod (5351) is provided with a blocking block (5352), the other end of the guide rod (5351) is provided with a guide block (5353), and also includes a guide slide rail (5354) disposed on the photovoltaic frame (51), the guide block (5353) is slidably connected to the guide slide rail (5354), and a second photovoltaic module (5355) is disposed on the guide block (5353).

6. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 5, characterized in that: The guide hole (534) enables the guide block (5353) to move along the guide rail (5354).

7. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 6, characterized in that: The extended drive assembly (532) includes an extended motor (5321) mounted on the photovoltaic frame (51), and the transmission end of the extended motor (5321) is provided with an extended gear (5322), which meshes with the rotating gear ring (531).

8. The photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 7, characterized in that: The sliding assembly (41) includes two sets of connecting seats (411) disposed on the rotating disk (31), an adjusting screw (412) is disposed between the two sets of connecting seats (411), an adjusting drive assembly (413) is disposed at one end of the adjusting screw (412), an adjusting slider (414) is screw-driven on the adjusting screw (412), a positioning rod (415) is also disposed between the two sets of connecting seats (411), the adjusting slider (414) is slidably connected to the positioning rod (415), and the telescopic rod (42) is disposed on the adjusting slider (414).

9. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 8, characterized in that: The telescopic rod (42) includes a sleeve (421) disposed on the adjusting slider (414), a sliding plate (422) is slidably connected inside the sleeve (421), a sliding rod (423) is disposed on the sliding plate (422), and the sliding rod (423) is connected to the mounting rod (433).

10. A photovoltaic direct-drive variable frequency refrigeration unit for a box-type cold storage according to claim 9, characterized in that: It also includes an energy storage mechanism installed inside the box-type refrigerator (1).

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