Photovoltaic energy storage integrated power generation system and method

Abstract

This invention relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic energy storage integrated power generation system and method. The system includes a slide, a rotating fixing device, and a control box. The rotating fixing device is connected to one side of a water-cooled energy storage device via a follow-up mechanism. The water-cooled energy storage device includes a protective cylinder, a water-cooling mechanism, a lifting mechanism, and an energy storage cabinet. The energy storage cabinet is installed inside the protective cylinder via the lifting mechanism. The water-cooling mechanism is installed on the side of the protective cylinder, and an installation frame is installed on the other side of the water-cooled energy storage device. A float is provided at the bottom of the installation frame, and several linearly distributed photovoltaic modules are installed on the upper part of the installation frame. A method based on the above system is also disclosed. Using the above-mentioned photovoltaic energy storage integrated power generation system and method, maintenance is convenient, it does not affect normal aquaculture activities, and the water-cooled energy storage device provides high heat dissipation efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic energy storage integrated power generation system and method. Background Technology

[0002] "Solar-aquaculture complementary" photovoltaic power stations achieve integrated development of aquaculture and green power generation. For aquaculture farmers, "power generation on water" saves on the cost of purchasing electricity, while the photovoltaic panels effectively suppress algae growth by blocking sunlight, significantly increasing aquaculture yields. For the power sector, "underwater aquaculture" achieves intensive use of land resources, alleviates land use conflicts, optimizes the power grid's energy structure, and makes energy supply more stable and diversified. Some bases have also extended the industrial chain, cleverly combining photovoltaic power generation with circular aquaculture, ecological planting, and tourism, further broadening income channels. Existing technologies use piles to fix photovoltaic panels or anchors to fix photovoltaic mounting frames, but the following problems still exist:

[0003] (1) The installation location of photovoltaic panels is generally fixed, and maintenance personnel need to travel by boat to carry out maintenance, which is time-consuming and labor-intensive. In addition, the installation of photovoltaic panels also affects normal aquaculture operations such as fishing and feeding.

[0004] (2) Energy storage devices are generally placed on the shore and are greatly affected by environmental factors. Summary of the Invention

[0005] The purpose of this invention is to provide a photovoltaic energy storage integrated power generation system to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides a photovoltaic energy storage integrated power generation system, including a rotating and fixing device mounted on the shore via a slide rail and a control box mounted on the rotating and fixing device. The rotating and fixing device is connected to one side of a water-cooled energy storage device via a follower mechanism. The water-cooled energy storage device includes a protective cylinder, a water-cooling mechanism, a lifting mechanism, and an energy storage cabinet. The energy storage cabinet is mounted inside the protective cylinder via the lifting mechanism. The water-cooling mechanism is mounted on the side of the protective cylinder. An installation frame is mounted on the other side of the water-cooled energy storage device. A float is provided at the bottom of the installation frame, and several linearly distributed photovoltaic modules are mounted on the upper part of the installation frame.

[0007] The photovoltaic modules are electrically connected to the energy storage device, and both the energy storage device and the rotating and fixing device are electrically connected to the control box.

[0008] Preferably, a sealing groove is provided inside the protective cylinder, and a sealing ring is provided on the outside of the energy storage cabinet. The sealing ring is located inside the sealing groove. A ventilation hole is provided on the cabinet body below the sealing ring. A heat dissipation exhaust fan is provided on the top of the energy storage cabinet. The water-cooled mechanism includes several ventilation pipes provided on the side of the protective cylinder. Spiral heat dissipation fins are provided on the inside of the ventilation pipes, and circumferentially distributed sheet-like heat dissipation fins are provided on the outside of the ventilation pipes. One end of the ventilation pipe is higher than the protective cylinder, and the other end of the ventilation pipe is connected to the side of the protective cylinder.

[0009] Preferably, the rotating fixing device includes a fixing pile, a positioning plate is installed on the fixing pile, the positioning plate has circumferentially distributed positioning holes, a positioning pin is inserted into one of the positioning holes, and a rotating drive motor is installed on the fixing pile.

[0010] The rotary drive motor is electrically connected to the control box.

[0011] Preferably, the follower mechanism includes a connecting plate, one end of which is connected to a rotary drive motor. A positioning groove is provided on the side of one end of the connecting plate, and a positioning pin passes through a positioning hole and is set in the positioning groove. A guide plate is connected to the other end of the connecting plate, and a guide groove is provided on the guide plate. A follower block is set in the guide groove, and an extension plate is connected to the follower block. The extension plate is fixedly connected to the protective cylinder.

[0012] Preferably, the energy storage cabinet is equipped with several energy storage modules, an energy storage controller, and at least one temperature sensor. The temperature sensor and the cooling fan are both electrically connected to the energy storage controller.

[0013] Preferably, the lifting mechanism includes a dual-axis lifting drive motor fixed to the bottom of the energy storage cabinet. Both output ends of the dual-axis lifting drive motor are provided with active meshing bevel gears. The active meshing bevel gears mesh with driven meshing bevel gears. The driven meshing bevel gears are connected to a lifting drive gear through a transmission shaft. The lifting drive gear meshes with a lifting rack inside the protective cylinder. The opening end of the protective cylinder is provided with a limit through hole. An electric limit spring pin is provided at the bottom of the energy storage cabinet.

[0014] The dual-axis lifting drive motor and the electric limit spring pin are both electrically connected to the energy storage controller.

[0015] Preferably, a fixed column is fixed on the mounting frame, the top of the fixed column is hinged to the photovoltaic module, an adjustment groove is opened on the back of the photovoltaic module, a hinge seat is provided in the adjustment groove, an angle adjustment column is hinged to the hinge seat, a meshing tooth is opened on the side of the angle adjustment column, the side of the angle adjustment column meshes with the angle adjustment drive gear, several angle adjustment drive gears are all installed on the angle adjustment shaft, the angle adjustment shaft is connected to an angle adjustment motor, and a light angle sensor and a light intensity sensor are installed on the mounting frame;

[0016] The light angle sensor, light intensity sensor, and angle adjustment motor are all electrically connected to the energy storage controller.

[0017] Preferably, the mounting frame includes two horizontal beams and a vertical beam disposed between the two horizontal beams. A limiting beam is disposed between the vertical beams. The limiting beam is provided with a through hole for the angle-adjusting column to pass through. The mounting frame is provided with an anchoring mechanism, which includes a winch and an anchor connected to the winch.

[0018] The winch is electrically connected to the energy storage controller.

[0019] Preferably, the winch includes a spool and a winch drive motor. The winch drive motor is connected to a gearbox. Output shafts are provided on both sides of the gearbox. One side of the gearbox is connected to the spool via a first clutch, and the other side of the gearbox is connected to an auxiliary shaft via a second clutch. An auxiliary paddle is connected to the auxiliary shaft.

[0020] Based on the above-mentioned method for a photovoltaic energy storage integrated power generation system, the cooling process of the water-cooled energy storage device is as follows:

[0021] Temperature sensors collect real-time temperature data inside the energy storage cabinet. The temperature data is transmitted to the energy storage controller for over-temperature determination. When the temperature data exceeds the set temperature value, the cooling exhaust fan is activated. Since the energy storage cabinet is under negative pressure, air enters the ventilation pipe and exchanges heat with the water through spiral and plate-shaped heat dissipation fins to reduce the air temperature. The air after heat exchange enters the energy storage cabinet, the protective cylinder, and the cavity formed by the sealing ring, and then enters the energy storage cabinet through the ventilation holes. The air entering the energy storage cabinet exchanges heat with the corresponding components and is then discharged through the exhaust holes on the cooling exhaust fan, thus achieving air cooling of the water in the energy storage cabinet.

[0022] The maintenance process for water-cooled energy storage devices and photovoltaic modules is as follows:

[0023] Based on the actual arrangement of a photovoltaic energy storage integrated power generation system, the spacing between each photovoltaic energy storage integrated power generation system is adjusted so that the photovoltaic energy storage integrated power generation systems on one side of the system to be maintained are close to each other, providing effective moving space for the photovoltaic energy storage integrated power generation system to be maintained;

[0024] With the first clutch engaged and the second clutch disengaged, the hoist drive motor is started to lift the anchor. After a set time, the positioning pin is pulled out, and the rotary drive motor is started. At the same time, the second clutch changes from disengaged to engaged, and the auxiliary paddle drive is activated, causing the follower mechanism, protective cylinder, and mounting frame to rotate around the rotary drive motor until the mounting frame is parallel to the shore. The rotary drive motor and hoist drive motor then stop running. The positioning pin is inserted into the positioning slot through the positioning plate. Workers maintain the water-cooled energy storage device and photovoltaic modules on the shore. When maintaining the water-cooled energy storage device, the lifting mechanism is started. When the energy storage cabinet rises to its highest height, the electric limit spring pin is activated, allowing the limit spring pin to insert into the limit through hole. The energy storage cabinet door is then opened for maintenance.

[0025] The process of adjusting the angle of photovoltaic modules is as follows:

[0026] The illumination angle sensor and the illumination intensity sensor collect illumination angle data and illumination intensity data respectively and transmit them to the energy storage controller for angle adjustment determination;

[0027] When the light intensity data is not greater than the set intensity threshold, no angle adjustment is performed;

[0028] When the light intensity exceeds the set intensity threshold, the energy storage controller controls the angle adjustment motor to move the angle adjustment column up and down, thereby adjusting the angle of the photovoltaic module.

[0029] Therefore, the beneficial effects of the photovoltaic energy storage integrated power generation system and method described above are as follows:

[0030] (1) The rotating fixing device is rotatable and can be rotated to the shore during maintenance, which makes it convenient for maintenance personnel to carry out shore maintenance and also allows them to avoid aquaculture vessels.

[0031] (2) A water-cooled energy storage device is adopted. The water environment is utilized to make the energy storage device underwater, and the environment is stable. At the same time, the water is used to cool the air entering the energy storage cabinet, thereby improving the heat dissipation efficiency.

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a photovoltaic energy storage integrated power generation system according to the present invention;

[0034] Figure 2 This is an exploded view of the water-cooled energy storage device of the present invention;

[0035] Figure 3 This is a schematic diagram of the internal structure of the protective cylinder of the present invention.

[0036] Figure Labels

[0037] 1. Rotating fixing device; 11. Fixing pile; 12. Positioning plate; 121. Positioning hole; 13. Positioning pin; 14. Rotary drive motor; 2. Control box; 3. Follower mechanism; 31. Connecting plate; 311. Positioning groove; 32. Guide plate; 321. Guide groove; 33. Extension plate; 4. Water-cooled energy storage device; 41. Protective cylinder; 411. Sealing groove; 412. Lifting rack; 413. Limiting through hole; 42. Ventilation pipe; 421. Spiral heat dissipation fins; 422. Plate-shaped heat dissipation fins; 43. Lifting mechanism; 431. Dual-axis lifting drive motor; 432. Active meshing bevel gear; 433. Driven meshing bevel gear. 434. Bevel gear; 435. Drive shaft; 44. Lifting drive gear; 44. Energy storage cabinet; 441. Sealing ring; 442. Ventilation hole; 443. Cooling exhaust fan; 444. Electric limit spring pin; 5. Mounting bracket; 51. Fixed column; 52. Angle adjustment drive gear; 53. Angle adjustment shaft; 54. Angle adjustment motor; 55. Crossbeam; 56. Vertical beam; 57. Limiting beam; 6. Float; 7. Photovoltaic module; 71. Adjusting slide; 72. Angle adjustment column; 8. Anchoring mechanism; 81. Winch drive motor; 82. Borehole; 83. First clutch; 84. Second clutch; 85. Auxiliary shaft; 86. Auxiliary propeller. Detailed Implementation

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0040] like Figure 1As shown, a photovoltaic energy storage integrated power generation system includes a rotating and fixed device 1 mounted on a bank via a slide rail and a control box 2 mounted on the rotating and fixed device 1. The control box 2 is a conventional control box. The rotating and fixed device 1 is connected to one side of a water-cooled energy storage device 4 via a follower mechanism 3. An installation frame 5 is installed on the other side of the water-cooled energy storage device 4. A float 6 is provided at the bottom of the installation frame 5 to provide buoyancy. Several linearly distributed photovoltaic modules 7 are installed on the upper part of the installation frame 5. Only one photovoltaic module 7 is shown in the figure to illustrate the structure of the installation frame 5. The photovoltaic module 7 is electrically connected to the energy storage device. Both the energy storage device and the rotating and fixed device 1 are electrically connected to the control box 2, realizing the control of the entire device.

[0041] like Figure 2 As shown, the water-cooled energy storage device 4 includes a protective cylinder 41, a water-cooled mechanism, a lifting mechanism 43, and an energy storage cabinet 44. The energy storage cabinet 44 is installed inside the protective cylinder 41 via the lifting mechanism 43. The water-cooled mechanism is installed on the side of the protective cylinder 41. Figure 3As shown, a sealing groove 411 is provided on the inner side of the protective cylinder 41, and a sealing ring 441 is provided on the outer side of the energy storage cabinet 44. The sealing ring 441 is located in the sealing groove 411, so that the protective cylinder 41, the energy storage cabinet 44 and the sealing ring 441 form a relatively sealed environment. When the energy storage cabinet 44 is activated for ventilation and heat dissipation, the energy storage cabinet 44 takes in air through the ventilation hole 442 provided on the cabinet body below the sealing ring 441. A heat dissipation exhaust fan 443 is provided on the top of the energy storage cabinet 44 to dissipate heat and exhaust hot air. The water-cooled air mechanism includes several ventilation pipes 42 provided on the side of the protective cylinder 41. Spiral heat dissipation fins 421 are provided on the inner side of the ventilation pipes 42, and circumferentially distributed sheet-like heat dissipation fins 422 are provided on the outer side of the ventilation pipes 42. One end of the ventilation pipe 42 is higher than the protective cylinder 41, and the other end of the ventilation pipe 42 is connected to the side of the protective cylinder 41. The energy storage cabinet 44 contains several energy storage modules, an energy storage controller, and temperature sensors. The number of temperature sensors can be set according to the actual internal energy storage module layout. These sensors are used to collect the temperature of the energy storage modules. The temperature sensors and the cooling fan 443 are both electrically connected to the energy storage controller. The lifting mechanism 43 includes a dual-axis lifting drive motor 431 fixed to the bottom of the energy storage cabinet 44. Both output ends of the dual-axis lifting drive motor 431 are equipped with active meshing bevel gears 432. The active meshing bevel gears 432 mesh with driven meshing bevel gears 433. The driven meshing bevel gears 433 are connected to a lifting drive gear 435 through a transmission shaft 434. The lifting drive gear 435 meshes with a lifting rack 412 inside the protective cylinder 41. The open end of the protective cylinder 41 is provided with a limit hole 413. The bottom of the energy storage cabinet 44 is provided with an electric limit spring pin 444. Both the dual-axis lifting drive motor 431 and the electric limit spring pin 444 are electrically connected to the energy storage controller. The energy storage cabinet 44 is raised or lowered by the forward and reverse rotation of the dual-axis lifting drive motor 431, which facilitates the extension of the energy storage cabinet 44 for subsequent maintenance. At the same time, when not under maintenance, the energy storage cabinet 44 is located in the underwater protective cylinder 41. Since the protective cylinder 41 is in the water, the temperature inside the protective cylinder 41 is relatively low when the external environment is hot, reducing the starting frequency of the heat dissipation fan 443.

[0042] The rotating fixing device 1 is used to connect with the shore foundation and includes a fixing pile 11. A positioning plate 12 is installed on the fixing pile 11. The positioning plate 12 has circumferentially distributed positioning holes 121. A positioning pin 13 is inserted into one of the positioning holes 121. A rotating drive motor 14 is installed on the fixing pile 11. The rotating drive motor 14 is electrically connected to the control box 2. During maintenance or other operations, it is convenient to adjust the position of the mounting frame 5 and the water-cooled energy storage device 4, so that maintenance operations can be carried out on the shore without the need for other equipment.

[0043] To adapt to fluctuations in water level, a follower mechanism 3 is provided. The follower mechanism 3 includes a connecting plate 31. One end of the connecting plate 31 is connected to the rotary drive motor 14. A positioning groove 311 is provided on the side of one end of the connecting plate 31. A positioning pin 13 passes through the positioning hole 121 and is set in the positioning groove 311. The other end of the connecting plate 31 is connected to a guide plate 32. The guide plate 32 is provided with a guide groove 321. A follower block is provided in the guide groove 321. The follower block is connected to an extension plate 33. The extension plate 33 is fixedly connected to the protective cylinder 41, so that when the water level of the protective cylinder 41 moves up and down, the follower block at one end of the extension plate 33 moves up and down in the guide groove 321.

[0044] A fixed column 51 is fixed on the mounting frame 5. The top of the fixed column 51 is hinged to the photovoltaic module 7. An adjustment groove 71 is provided on the back of the photovoltaic module 7. A hinge seat is provided in the adjustment groove 71. An angle adjustment column 72 is hinged to the hinge seat. The side of the angle adjustment column 72 is provided with meshing teeth. The side of the angle adjustment column 72 meshes with the angle adjustment drive gear 52. Several angle adjustment drive gears 52 are all mounted on the angle adjustment shaft 53. The angle adjustment shaft 53 is connected to the angle adjustment motor 54. A light angle sensor and a light intensity sensor are installed on the mounting frame 5. The light angle sensor, the light intensity sensor and the angle adjustment motor 54 are all electrically connected to the energy storage controller to realize the adjustment of the angle of the photovoltaic module 7 according to the actual light environment and improve the power generation efficiency.

[0045] Mounting frame 5 includes two horizontal beams 55 and a vertical beam 56 disposed between the two horizontal beams 55. A limiting beam 57 is disposed between the vertical beams 56. The limiting beam 57 is provided with a through hole for the angle-adjusting column 72 to pass through. An anchoring mechanism 8 is provided on mounting frame 5. The anchoring mechanism 8 includes a winch. The winch is connected to an anchor. The anchoring method is used to further reinforce the mounting frame 5 on the water. The winch is electrically connected to the energy storage controller.

[0046] To ensure smoother rotation of the mounting frame 5, an auxiliary structure is provided. The winch includes a spool 82 and a winch drive motor 81. The winch drive motor 81 is connected to a gearbox (in this embodiment, a dual-shaft output gearbox). Output shafts are provided on both sides of the gearbox. One side of the gearbox is connected to the spool 82 via a first clutch 83, and the other side of the gearbox is connected to an auxiliary shaft 85 via a second clutch 84. An auxiliary paddle 86 is connected to the auxiliary shaft 85. The first clutch 83 and the second clutch 84 are electrically connected to the energy storage controller to realize the engagement / disengagement state of the winch drive motor 81 with the spool 82 and the auxiliary shaft 85.

[0047] A method for a photovoltaic energy storage integrated power generation system, wherein the cooling process of the water-cooled energy storage device 4 is as follows:

[0048] Temperature sensors collect temperature data inside the energy storage cabinet 44 in real time. The temperature data is transmitted to the energy storage controller for over-temperature determination. When the temperature data is higher than the set temperature value, the cooling fan 443 is activated. Since the energy storage cabinet 44 is under negative pressure, air enters the ventilation pipe 42 and exchanges heat with the water through the spiral heat dissipation fins 421 and the plate heat dissipation fins 422 to reduce the air temperature. The air after heat exchange enters the cavity formed by the energy storage cabinet 44, the protective cylinder 41 and the sealing ring 441, and then enters the energy storage cabinet 44 through the ventilation hole 442. After the air enters the energy storage cabinet 44 and exchanges heat with the corresponding devices, it is discharged through the exhaust hole on the cooling fan 443, thus realizing the air cooling of the water in the energy storage cabinet 44.

[0049] The maintenance process for the water-cooled energy storage device 4 and the photovoltaic module 7 is as follows:

[0050] Based on the actual arrangement of a photovoltaic energy storage integrated power generation system, the spacing between each photovoltaic energy storage integrated power generation system is adjusted so that the photovoltaic energy storage integrated power generation systems on one side of the system to be maintained are close to each other, providing effective moving space for the photovoltaic energy storage integrated power generation system to be maintained;

[0051] The first clutch 83 is engaged, and the second clutch 84 is disengaged. The hoisting drive motor 81 is started to raise the anchor. After extending the set time, the positioning pin 13 is pulled out, and the rotary drive motor 14 is started. At the same time, the second clutch 84 changes from disengaged to engaged, and the auxiliary paddle 86 is driven, so that the follower mechanism 3, the protective cylinder 41, and the mounting frame 5 rotate around the rotary drive motor 14 until the mounting frame 5 is parallel to the shore. The rotary drive motor 14 and the hoisting drive motor 81 stop running. The positioning pin 13 is inserted into the positioning slot 311 through the positioning plate 12. The staff maintains the water-cooled energy storage device 4 and the photovoltaic module 7 on the shore. When maintaining the water-cooled energy storage device 4, the lifting mechanism 43 is started. When the energy storage cabinet 44 rises to the highest height, the electric limit spring pin 444 is activated, so that the limit spring pin is inserted into the limit through hole 413, and the cabinet door of the energy storage cabinet 44 is opened for maintenance.

[0052] The process of adjusting the angle of the photovoltaic module is as follows:

[0053] The illumination angle sensor and the illumination intensity sensor collect illumination angle data and illumination intensity data respectively and transmit them to the energy storage controller for angle adjustment determination;

[0054] When the light intensity data is not greater than the set intensity threshold, no angle adjustment is performed;

[0055] When the light intensity is greater than the set intensity threshold, the energy storage controller controls the angle adjustment motor 54 to move the angle adjustment column 72 up and down, thereby adjusting the angle of the photovoltaic module 7.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A photovoltaic energy storage integrated power generation system, comprising a rotating fixing device arranged on the shore through a slide and a control box installed on the rotating fixing device, characterized in that: The rotating fixing device is connected to one side of the water-cooled energy storage device through a follow-up mechanism. The water-cooled energy storage device includes a protective cylinder, a water-cooled mechanism, a lifting mechanism, and an energy storage cabinet. The energy storage cabinet is installed in the protective cylinder through the lifting mechanism. The water-cooled mechanism is installed on the side of the protective cylinder. An installation frame is installed on the other side of the water-cooled energy storage device. A float is set at the bottom of the installation frame. Several linearly distributed photovoltaic modules are installed on the upper part of the installation frame. The photovoltaic modules are electrically connected to the energy storage device, and both the energy storage device and the rotating and fixing device are electrically connected to the control box. The inner side of the protective cylinder is provided with a sealing groove, and the outer side of the energy storage cabinet is provided with a sealing ring. The sealing ring is located in the sealing groove. The energy storage cabinet is provided with ventilation holes on the cabinet body below the sealing ring. The top of the energy storage cabinet is provided with a heat dissipation exhaust fan. The water-cooled mechanism includes several ventilation pipes provided on the side of the protective cylinder. The inner side of the ventilation pipe is provided with spiral heat dissipation fins, and the outer side of the ventilation pipe is provided with circumferentially distributed sheet-like heat dissipation fins. One end of the ventilation pipe is higher than the protective cylinder, and the other end of the ventilation pipe is connected to the side of the protective cylinder. The lifting mechanism includes a dual-axis lifting drive motor fixed to the bottom of the energy storage cabinet. Both output ends of the dual-axis lifting drive motor are equipped with active meshing bevel gears. The active meshing bevel gears mesh with driven meshing bevel gears. The driven meshing bevel gears are connected to a lifting drive gear through a transmission shaft. The lifting drive gear meshes with a lifting rack inside the protective cylinder. The opening end of the protective cylinder is equipped with a limit through hole. An electric limit spring pin is provided at the bottom of the energy storage cabinet. The dual-axis lifting drive motor and the electric limit spring pin are both electrically connected to the energy storage controller inside the energy storage cabinet. The mounting frame is equipped with an anchoring mechanism, which includes a winch connected to an anchor; the winch is electrically connected to the energy storage controller. The winch includes a bobbin and a winch drive motor. The winch drive motor is connected to a gearbox. Output shafts are provided on both sides of the gearbox. One side of the gearbox is connected to the bobbin through a first clutch, and the other side of the gearbox is connected to an auxiliary shaft through a second clutch. An auxiliary paddle is connected to the auxiliary shaft.

2. The photovoltaic energy storage integrated power generation system of claim 1, wherein: The rotating fixing device includes a fixing pile, a positioning plate installed on the fixing pile, a positioning hole with circumferentially distributed positioning holes on the positioning plate, a positioning pin inserted into one of the positioning holes, and a rotating drive motor installed on the fixing pile. The rotary drive motor is electrically connected to the control box.

3. The photovoltaic energy storage integrated power generation system of claim 2, wherein: The follower mechanism includes a connecting plate. One end of the connecting plate is connected to a rotary drive motor. A positioning groove is provided on the side of one end of the connecting plate. A positioning pin passes through a positioning hole and is set in the positioning groove. A guide plate is connected to the other end of the connecting plate. A guide groove is provided on the guide plate. A follower block is set in the guide groove. An extension plate is connected to the follower block. The extension plate is fixedly connected to the protective cylinder.

4. The photovoltaic energy storage integrated power generation system of claim 3, wherein: The energy storage cabinet contains several energy storage modules, an energy storage controller, and at least one temperature sensor. The temperature sensor and the cooling fan are both electrically connected to the energy storage controller.

5. The photovoltaic energy storage integrated power generation system of claim 4, wherein: The mounting frame is fixed with a fixed column, the top of which is hinged to the photovoltaic module. An adjustment groove is provided on the back of the photovoltaic module, and a hinge seat is provided in the adjustment groove. The hinge seat is hinged to an angle adjustment column. The side of the angle adjustment column is provided with meshing teeth, which mesh with the angle adjustment drive gear. Several angle adjustment drive gears are mounted on the angle adjustment shaft, which is connected to an angle adjustment motor. A light angle sensor and a light intensity sensor are installed on the mounting frame. The light angle sensor, light intensity sensor, and angle adjustment motor are all electrically connected to the energy storage controller.

6. The photovoltaic energy storage integrated power generation system of claim 5, wherein: The mounting bracket includes two horizontal beams and a vertical beam positioned between the two horizontal beams. A limiting beam is provided between the vertical beams, and the limiting beam has a through hole for the angle-adjusting column to pass through.

7. The method of claim 6, wherein the photovoltaic energy storage integrated power generation system is characterized by, The cooling process of the water-cooled energy storage device is as follows: Temperature sensors collect real-time temperature data inside the energy storage cabinet. The temperature data is transmitted to the energy storage controller for over-temperature determination. When the temperature data exceeds the set temperature value, the cooling exhaust fan is activated. Since the energy storage cabinet is under negative pressure, air enters the ventilation pipe and exchanges heat with the water through spiral and plate-shaped heat dissipation fins to reduce the air temperature. The air after heat exchange enters the energy storage cabinet, the protective cylinder, and the cavity formed by the sealing ring, and then enters the energy storage cabinet through the ventilation holes. The air entering the energy storage cabinet exchanges heat with the corresponding components and is then discharged through the exhaust holes on the cooling exhaust fan, thus achieving air cooling of the water in the energy storage cabinet. The maintenance process for water-cooled energy storage devices and photovoltaic modules is as follows: Based on the actual arrangement of a photovoltaic energy storage integrated power generation system, the spacing between each photovoltaic energy storage integrated power generation system is adjusted so that the photovoltaic energy storage integrated power generation systems on one side of the system to be maintained are close to each other, providing effective moving space for the photovoltaic energy storage integrated power generation system to be maintained; With the first clutch engaged and the second clutch disengaged, the hoist drive motor is started to lift the anchor. After a set time, the positioning pin is pulled out, and the rotary drive motor is started. At the same time, the second clutch changes from disengaged to engaged, and the auxiliary paddle drive is activated, causing the follower mechanism, protective cylinder, and mounting frame to rotate around the rotary drive motor until the mounting frame is parallel to the shore. The rotary drive motor and hoist drive motor then stop running. The positioning pin is inserted into the positioning slot through the positioning plate. Workers maintain the water-cooled energy storage device and photovoltaic modules on the shore. When maintaining the water-cooled energy storage device, the lifting mechanism is started. When the energy storage cabinet rises to its highest height, the electric limit spring pin is activated, allowing the limit spring pin to insert into the limit through hole. The energy storage cabinet door is then opened for maintenance. The process of adjusting the angle of photovoltaic modules is as follows: The illumination angle sensor and the illumination intensity sensor collect illumination angle data and illumination intensity data respectively and transmit them to the energy storage controller for angle adjustment determination; When the light intensity data is not greater than the set intensity threshold, no angle adjustment is performed; When the light intensity exceeds the set intensity threshold, the energy storage controller controls the angle adjustment motor to move the angle adjustment column up and down, thereby adjusting the angle of the photovoltaic module.

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