Energy-saving power supply and storage device for photovoltaic power generation system

Abstract

The present invention relates to an energy-saving power supply and storage device for a photovoltaic power generation system applied in the field of photovoltaic power generation systems, comprising a ring network cabinet and a photovoltaic panel, wherein a cleaning assembly comprising a threaded screw, a cleaning block and a guide slide bar is arranged at the upper end of the photovoltaic panel, the threaded screw bar and the guide slide bar are both rotatably installed at the upper end of the photovoltaic panel, the threaded screw bar threads through the cleaning block, the guide slide bar slides through the cleaning block, the cleaning block is slidably fitted with the upper surface of the photovoltaic panel, a wind wheel is arranged on one side of the photovoltaic panel, a transmission mechanism is arranged between the wind wheel and the threaded screw bar, the wind wheel can be driven to rotate by external wind force through the coordinated arrangement of the wind wheel, the threaded screw bar and the transmission mechanism, thereby driving the cleaning block to slide back and forth in contact with the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel, thereby ensuring that the photovoltaic panel fully utilizes solar energy, and the cleaning process only relies on the external wind force, does not cause power loss, and is more energy-saving.

Description

Technical Field

[0001] The present invention relates to a power supply and storage device, in particular to an energy-saving power supply and storage device for a photovoltaic power generation system applied in the field of photovoltaic power generation systems. Background Art

[0002] Photovoltaic power generation is a technology that converts solar energy directly into electrical energy. It uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. The key component of this technology is the solar cell. After the solar cells are connected in series and packaged for protection, they can form a large-area solar cell module, which is then combined with components such as a power controller to form a photovoltaic power generation device.

[0003] As a power supply and storage device, the ring main unit is an important part of power work. It is divided into indoor and outdoor types. The outdoor ring main unit is placed outdoors for a long time and is usually used in combination with a photovoltaic power generation system. For example, the specification of the patent publication number CN116208068B discloses an energy-saving and environmentally friendly power supply and storage device with a solar photovoltaic power generation system, including a cabinet, a first relay, an AC load, a second relay, a line power supply, an automatic flip component, a transposition pendulum, and an automatic cleaning mechanism. By setting up a power supply and storage device, it is provided with a solar panel component that can convert solar energy into electrical energy and store it through a battery pack and provide the electrical energy to the required AC load through an electric energy converter. At the same time, when the AC load has a current overload, the temperature sensor displays an abnormal temperature, and the electric energy converter can light up the electric energy conduction status indicator light stored in the battery pack, and observe the relevant abnormal data at the back end through the first display screen connected to the video monitoring device, so that the situation of the network cabinet can be timely known and online maintenance can be performed through the controller of the first display screen at the back end, so as to realize the digitalization and intelligence of the network cabinet.

[0004] Based on the above search and in combination with the prior art, it is found that although the energy-saving power supply and storage equipment of the existing photovoltaic power generation system can make full use of solar energy, in order to ensure the full utilization of solar energy, most of them add electric drive equipment (such as an electric motor or an electric push rod) to cooperate with cleaning components to clean the surface of the photovoltaic panel to ensure the cleanliness of the surface of the photovoltaic panel, and the power loss is large. Therefore, an energy-saving power supply and storage equipment for a photovoltaic power generation system is proposed to improve the above problems. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that although the energy-saving power supply and storage equipment of the existing photovoltaic power generation system can make full use of solar energy, in order to ensure the full utilization of solar energy, most of them are equipped with electric drive equipment (such as electric motors or electric push rods) to cooperate with cleaning components to clean the surface of the photovoltaic panels to ensure the cleanliness of the surface of the photovoltaic panels, resulting in large power loss.

[0006] To solve the above problems, the present invention provides an energy-saving power supply and storage device for a photovoltaic power generation system, comprising a ring network cabinet with built-in electrical equipment and a photovoltaic panel installed on the top of the ring network cabinet:

[0007] A cleaning assembly is provided at the upper end of the photovoltaic panel, and the cleaning assembly includes a threaded screw, a cleaning block and a guide slide rod. The threaded screw and the guide slide rod are arranged in parallel and are both rotatably installed at the upper end of the photovoltaic panel. The threaded screw thread penetrates the cleaning block, and the guide slide rod slides through the cleaning block. The cleaning block is slidably fitted with the upper surface of the photovoltaic panel.

[0008] A wind wheel is provided on one side of the photovoltaic panel. The wind wheel is installed on the upper end of the ring network cabinet through a first rotating shaft for vertical rotation. The wind wheel extends to the upper side of the photovoltaic panel through the first rotating shaft. A transmission mechanism is provided between the wind wheel and the threaded screw. When the wind wheel rotates, the threaded screw is rotated through the transmission mechanism.

[0009] In the energy-saving power supply and storage device of the above-mentioned photovoltaic power generation system, through the coordinated arrangement of the wind wheel, the threaded screw and the transmission mechanism, the external wind force can be used to drive the wind wheel to rotate, thereby driving the threaded screw to rotate through the transmission mechanism, and then driving the cleaning block to slide back and forth against the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel, thereby ensuring that the photovoltaic panel fully utilizes solar energy, and the cleaning process only relies on the external wind force, will not cause power loss, and is more energy-saving.

[0010] As a further supplement to the present application, the transmission mechanism includes a first bevel gear, a second bevel gear, a second rotating shaft, a transmission sprocket and a transmission chain;

[0011] The first bevel gear is coaxially fixed to the end of the threaded screw, the second rotating shaft is vertically rotatably installed on the ring network cabinet, the second bevel gear is coaxially fixed to the top of the second rotating shaft and meshes with the first bevel gear;

[0012] Two transmission sprockets are provided, and the two transmission sprockets are coaxially fixed to the second rotating shaft and the first rotating shaft respectively, and the transmission chain is installed between the two transmission sprockets.

[0013] As a further supplement to the present application, the photovoltaic panel is arranged to be tilted downward toward the side away from the wind wheel, and a water tank is installed on the ring network cabinet on the side of the photovoltaic panel tilted downward. The side end of the water tank is fixedly connected to an extension pipe, the bottom end of the second rotating shaft rotates through the extension pipe, and a water wheel is installed. The lower end of the extension pipe is fixedly connected to a drain pipe, and the drain pipe is sleeved on the outside of the water wheel; on rainy days, part of the rainwater falls directly into the water tank, and part of the rainwater is diverted to the water tank through the photovoltaic panel. The rainwater falling into the water tank is discharged through the extension pipe and the drain pipe. When the rainwater passes through the drain pipe, it impacts the water wheel, causing the water wheel to rotate, thereby cooperating with the second rotating shaft, the first bevel gear and the second bevel gear to drive the threaded screw to rotate, and then drive the cleaning block to slide back and forth in contact with the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel.

[0014] As a further supplement to the present application, the upper end of the water tank is arranged as an inclined surface, and the inclined surface of the water tank is arranged downwardly inclined toward the side away from the ring network cabinet, and the upper end surface of the water tank is installed with a filter screen consistent with its inclined surface; the filter screen can intercept larger impurities, and because the filter screen is arranged downwardly inclined toward the side away from the ring network cabinet, rainwater falling from the photovoltaic panel can wash away the impurities intercepted on the surface of the filter screen, effectively avoiding clogging of the filter screen.

[0015] As a further supplement to the present application, a heat conduction plate is provided on one side of the water tank which is in contact with the ring network cabinet, and the water tank, except for the part which is in contact with the ring network cabinet, is made of heat insulation material; rainwater stored in the water tank on rainy days is used to cool the ring network cabinet through the heat conduction plate, which is beneficial to ensure the stable operation of the electrical equipment inside the ring network cabinet. In addition, the water tank made of heat insulation material can effectively reduce the influence of external temperature.

[0016] As a further supplement to the present application, a cabinet door is provided at one end of the ring network cabinet away from the water tank; in actual application, the cabinet door can be ensured to be located on the shady side so that the staff can avoid sunlight during maintenance.

[0017] As a further supplement to the present application, water retaining plates are installed on both sides of the upper end of the photovoltaic panel parallel to the threaded screw; rainwater falling on the upper surface of the photovoltaic panel can be collected to increase the amount of rainwater collected by the water tank per unit time.

[0018] As a further supplement to the present application, a groove that is compatible with the water retaining plate is provided on the photovoltaic panel, and a water-swelling rubber block is connected between the water retaining plate and the bottom end of the groove; on sunny days, the water-swelling rubber block loses water and shrinks, and is stored in the groove with the water retaining plate, so that the upper surface of the photovoltaic panel is relatively flat, which is convenient for the cleaning block to push dust away from the photovoltaic panel; on rainy days, the water-swelling rubber block expands when exposed to water, causing the water retaining plate to move up, thereby collecting rainwater.

[0019] As a further supplement to the present application, a limit groove whose size is larger than that of the groove is provided at the bottom end of the groove, a limit block is installed at the bottom end of the water baffle, and a rubber block that expands when exposed to water is fixed between the limit block and the bottom end of the limit groove to prevent the water baffle from detaching from the groove.

[0020] As a further supplement to the present application, flexible protective covers are connected between the two side ends of the cleaning block and the photovoltaic panel, and the flexible protective covers are arranged on the outside of the threaded screw; the threads on the surface of the threaded screw can be protected to ensure that the threaded screw can stably drive the cleaning block to move back and forth.

[0021] In summary, through the coordinated arrangement of the wind wheel, the threaded screw and the transmission mechanism, the wind wheel can be driven to rotate by the external wind force, thereby the threaded screw is rotated by the transmission mechanism, and then the cleaning block is driven to slide back and forth in contact with the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel; on rainy days, part of the rainwater falls directly into the water storage tank, and part of the rainwater is diverted to the water storage tank through the photovoltaic panel. The rainwater that falls into the water storage tank is discharged through the extension pipe and the drain pipe. When the rainwater passes through the drain pipe, it impacts the water wheel, causing the water wheel to rotate, thereby cooperating with the second rotating shaft, the first bevel gear and the second bevel gear to drive the threaded screw to rotate, and then the cleaning block is driven to slide back and forth in contact with the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel, ensuring that the photovoltaic panel fully utilizes the solar energy, and the cleaning process only relies on the external wind and rain, does not cause power loss, and is more energy-saving;

[0022] The filter at the upper end of the water storage tank can intercept larger impurities, and because the filter is tilted downward toward the side away from the ring network cabinet, rainwater falling from the photovoltaic panel can wash away the impurities intercepted on the surface of the filter, effectively avoiding clogging of the filter; by installing a water retaining plate and a water-swelling rubber block on both sides of the upper end of the photovoltaic panel parallel to the threaded screw, on sunny days, the water-swelling rubber block loses water and shrinks, and is stored in the groove with the water retaining plate, so that the upper surface of the photovoltaic panel is relatively flat, which is convenient for the cleaning block to push dust away from the photovoltaic panel; on rainy days, the water-swelling rubber block expands when it encounters water, causing the water retaining plate to move up, which can gather rainwater falling on the upper surface of the photovoltaic panel and increase the amount of rainwater collected in the water storage tank per unit time; on sunny days, the rainwater stored in the water storage tank on rainy days can be used to cool the ring network cabinet through the heat conduction plate, which is beneficial to ensure the stable operation of the electrical equipment inside the ring network cabinet. In addition, the water storage tank made of heat-insulating material can effectively reduce the influence of external temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall three-dimensional structure of the first embodiment of the present application is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall three-dimensional structure of the first embodiment of the present application is shown in FIG. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the overall planar structure of the first embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the transmission mechanism of the first embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application when the water retaining plate is stored inside the groove;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application in a state where the water retaining plate extends out of the groove;

[0029] Figure 7 This is a schematic diagram of the planar structure of the first embodiment of the present application when the water retaining plate is stored inside the groove;

[0030] Figure 8 This is a schematic diagram of the planar structure of the first embodiment of the present application when the water retaining plate extends out of the groove.

[0031] Description of the numbers in the figure:

[0032] 1. Ring network cabinet; 101. Cabinet door; 2. Photovoltaic panel; 201. Groove; 202. Limiting groove; 3. Cleaning assembly; 31. Threaded screw; 32. Cleaning block; 33. Guide slide bar; 4. Wind wheel; 401. First rotating shaft; 5. Transmission mechanism; 51. First bevel gear; 52. Second bevel gear; 53. Second rotating shaft; 54. Transmission sprocket; 55. Transmission chain; 6. Water storage tank; 7. Extension pipe; 8. Drain pipe; 9. Water wheel; 10. Filter screen; 11. Water retaining plate; 12. Limiting block; 13. Water-expanding rubber block. DETAILED DESCRIPTION

[0033] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] The present invention provides an energy-saving power supply and storage device for a photovoltaic power generation system. Figure 1-8 , including a ring network cabinet 1 with built-in electrical equipment and a photovoltaic panel 2 installed on the top of the ring network cabinet 1, a cleaning component 3 is arranged on the upper end of the photovoltaic panel 2, the cleaning component 3 includes a threaded screw 31, a cleaning block 32 and a guide slide 33, the threaded screw 31 and the guide slide 33 are arranged in parallel and are both rotatably installed on the upper end of the photovoltaic panel 2, the threaded screw 31 threadedly penetrates the cleaning block 32, the guide slide 33 slides through the cleaning block 32, and the cleaning block 32 is slidably fitted with the upper surface of the photovoltaic panel 2.

[0036] A wind wheel 4 is arranged on one side of the photovoltaic panel 2. The wind wheel 4 is vertically rotatably installed on the upper end of the ring network cabinet 1 through a first rotating shaft 401, and the wind wheel 4 extends to the upper side of the photovoltaic panel 2 through the first rotating shaft 401. A transmission mechanism 5 is arranged between the wind wheel 4 and the threaded screw 31. The energy-saving power supply and storage device of the photovoltaic power generation system can utilize external wind force to drive the wind wheel 4 to rotate through the coordinated arrangement of the wind wheel 4, the threaded screw 31 and the transmission mechanism 5, thereby driving the threaded screw 31 to rotate through the transmission mechanism 5, and then driving the cleaning block 32 to slide back and forth against the upper surface of the photovoltaic panel 2 to clean the upper surface of the photovoltaic panel 2, thereby ensuring that the photovoltaic panel 2 fully utilizes the solar energy, and the cleaning process only relies on the external wind force, will not cause power loss, and is more energy-saving.

[0037] Among them, flexible protective covers are connected between the two side ends of the cleaning block 32 and the photovoltaic panel 2. The flexible protective covers are arranged on the outside of the threaded screw 31. The flexible protective covers can protect the threads on the surface of the threaded screw 31 to ensure that the threaded screw 31 can stably drive the cleaning block 32 to move back and forth.

[0038] Among them, the transmission mechanism 5 includes a first bevel gear 51, a second bevel gear 52, a second rotating shaft 53, a transmission sprocket 54 and a transmission chain 55. The first bevel gear 51 is coaxially fixed to the end of the threaded screw 31, the second rotating shaft 53 is vertically rotatably installed on the ring network cabinet 1, the second bevel gear 52 is coaxially fixed to the top of the second rotating shaft 53 and meshes with the first bevel gear 51, and two transmission sprockets 54 are provided. The two transmission sprockets 54 are coaxially fixed to the second rotating shaft 53 and the first rotating shaft 401 respectively, and the transmission chain 55 is installed between the two transmission sprockets 54.

[0039] Among them, the photovoltaic panel 2 is arranged to be tilted downward toward the side away from the wind wheel 4, and the ring network cabinet 1 is located on the side of the photovoltaic panel 2 tilted downward and is equipped with a water tank 6, the side end of the water tank 6 is fixedly connected with an extension pipe 7, the bottom end of the second rotating shaft 53 rotates through the extension pipe 7, and is equipped with a water wheel 9, the lower end of the extension pipe 7 is fixedly connected with a drain pipe 8, and the drain pipe 8 is sleeved on the outside of the water wheel 9.

[0040] The energy-saving power supply and storage device of the photovoltaic power generation system is arranged through the cooperation of the water tank 6 and the water wheel 9. On rainy days, part of the rainwater falls directly into the water tank 6, and part of the rainwater is diverted to the water tank 6 through the photovoltaic panel 2. The rainwater falling into the water tank 6 is discharged through the extension pipe 7 and the drain pipe 8. When the rainwater passes through the drain pipe 8, it impacts the water wheel 9, causing the water wheel 9 to rotate, thereby cooperating with the second rotating shaft 53, the first bevel gear 51 and the second bevel gear 52 to drive the threaded screw 31 to rotate, and then drive the cleaning block 32 to slide back and forth in contact with the upper surface of the photovoltaic panel 2 to clean the upper surface of the photovoltaic panel 2.

[0041] Furthermore, the upper end of the water tank 6 is set as an inclined surface, and the inclined surface of the water tank 6 is set to be inclined downward toward the side away from the ring network cabinet 1, and the upper end surface of the water tank 6 is installed with a filter screen 10 consistent with its inclined surface.

[0042] Based on the coordinated setting of the above structure, firstly, the filter 10 can intercept larger impurities. Secondly, since the filter 10 is tilted downward toward the side away from the ring network cabinet 1, rainwater falling from the photovoltaic panel 2 can wash away the impurities intercepted on the upper surface of the filter 10, effectively avoiding clogging of the filter 10.

[0043] Regarding the water storage tank 6, specifically, one side of the water storage tank 6 that is in contact with the ring network cabinet 1 is set as a heat conduction plate, and the water storage tank 6 except for the part that is in contact with the ring network cabinet 1 is made of heat insulation material.

[0044] The rainwater stored in the water tank 6 on rainy days is used to cool the ring network cabinet 1 through the heat conduction plate, which is beneficial to ensure the stable operation of the electrical equipment inside the ring network cabinet 1. In addition, the water tank 6 made of insulation material can effectively reduce the influence of external temperature.

[0045] Among them, a cabinet door 101 is arranged at one end of the ring network cabinet 1 away from the water storage tank 6. In actual application, the cabinet door 101 can be ensured to be located on the sun-proof side, so that the staff can avoid sunlight during maintenance.

[0046] In order to increase the amount of rainwater collected by the water tank 6 per unit time, water baffles 11 are installed on both sides of the upper end of the photovoltaic panel 2 parallel to the threaded screw 31. The water baffles 11 can collect rainwater falling on the upper surface of the photovoltaic panel 2 to increase the amount of rainwater collected by the water tank 6 per unit time.

[0047] Furthermore, the photovoltaic panel 2 is provided with a groove 201 adapted to the water retaining plate 11, a water-swelling rubber block 13 is connected between the water retaining plate 11 and the bottom end of the groove 201, a limiting groove 202 whose size is larger than the groove 201 is provided at the bottom end of the groove 201, a limiting block 12 is installed at the bottom end of the water retaining plate 11, and the water-swelling rubber block 13 is fixed between the limiting block 12 and the bottom end of the limiting groove 202 to prevent the water retaining plate 11 from detaching from the groove 201.

[0048] Based on the coordinated arrangement of the above structure, on sunny days, the water-swelling rubber block 13 loses water and shrinks, and is stored in the groove 201 with the water retaining plate 11, so that the upper surface of the photovoltaic panel 2 is relatively flat, which is convenient for the cleaning block 32 to push dust away from the photovoltaic panel 2; on rainy days, the water-swelling rubber block 13 expands when exposed to water, causing the water retaining plate 11 to move upward, thereby collecting rainwater.

[0049] Working principle: the ring network cabinet 1 is installed in a place with sufficient light, so that the photovoltaic panel 2 faces the direction with the longest light exposure time. In this state, the cabinet door 101 is always located on the shady side, so that the staff can avoid sunlight during maintenance; during use, the external wind drives the wind wheel 4 to rotate, and the threaded screw 31 is rotated through the cooperation of the second rotating shaft 53, the first bevel gear 51 and the second bevel gear 52. The rotating threaded screw 31 drives the cleaning block 32 to slide back and forth on the upper surface of the photovoltaic panel 2 to clean the upper surface of the photovoltaic panel 2;

[0050] On rainy days, Figure 6 and Figure 8 As shown, the water-swellable rubber block 13 swells when exposed to water, causing the water retaining plate 11 to move upward, thereby collecting rainwater falling on the upper surface of the photovoltaic panel 2, increasing the amount of rainwater collected by the water storage tank 6 per unit time, and the filter screen 10 at the upper end of the water storage tank 6 intercepts larger impurities. Moreover, since the filter screen 10 is tilted downward toward the side away from the ring network cabinet 1, the rainwater falling from the photovoltaic panel 2 can wash away the impurities intercepted on the upper surface of the filter screen 10, effectively avoiding clogging of the filter screen 10, and the rainwater falling into the water storage tank 6 is discharged through the extension pipe 7 and the drain pipe 8. When the rainwater passes through the drain pipe 8, it impacts the water wheel 9, causing the water wheel 9 to rotate, thereby cooperating with the second rotating shaft 53, the first bevel gear 51 and the second bevel gear 52 to drive the threaded screw 31 to rotate, thereby driving the cleaning block 32 to slide back and forth in contact with the upper surface of the photovoltaic panel 2 to clean the upper surface of the photovoltaic panel 2;

[0051] On sunny days, Figure 5 and Figure 7 As shown, the water-expanding rubber block 13 loses water and shrinks, and is stored in the groove 201 with the water retaining plate 11, so that the upper surface of the photovoltaic panel 2 is relatively flat, and the cleaning block 32 can push dust away from the photovoltaic panel 2. On sunny days, the rainwater stored in the water tank 6 on rainy days can be used to cool the ring network cabinet 1 through the heat conduction plate, thereby ensuring the stable operation of the electrical equipment inside the ring network cabinet 1.

[0052] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An energy-saving power supply and storage device for a photovoltaic power generation system, comprising a ring network cabinet (1) with built-in electrical equipment and a photovoltaic panel (2) installed on the top of the ring network cabinet (1), characterized in that: A cleaning assembly (3) is provided at the upper end of the photovoltaic panel (2), the cleaning assembly (3) comprising a threaded screw (31), a cleaning block (32) and a guide slide bar (33), the threaded screw (31) and the guide slide bar (33) being arranged in parallel and rotatably mounted on the upper end of the photovoltaic panel (2), the threaded screw (31) threadably passing through the cleaning block (32), the guide slide bar (33) slidingly passing through the cleaning block (32), and the cleaning block (32) being arranged in sliding contact with the upper surface of the photovoltaic panel (2); A wind wheel (4) is arranged on one side of the photovoltaic panel (2); the wind wheel (4) is vertically rotatably mounted on the upper end of the ring network cabinet (1) via a first rotating shaft (401); and the wind wheel (4) extends to the upper side of the photovoltaic panel (2) via the first rotating shaft (401); a transmission mechanism (5) is arranged between the wind wheel (4) and the threaded screw (31); when the wind wheel (4) rotates, the threaded screw (31) is rotated with the transmission mechanism (5); The transmission mechanism (5) comprises a first bevel gear (51), a second bevel gear (52), a second rotating shaft (53), a transmission sprocket (54) and a transmission chain (55); The first bevel gear (51) is coaxially fixed to the end of the threaded screw (31); the second rotating shaft (53) is vertically rotatably mounted on the ring main cabinet (1); the second bevel gear (52) is coaxially fixed to the top of the second rotating shaft (53) and meshes with the first bevel gear (51); Two transmission sprockets (54) are provided, and the two transmission sprockets (54) are coaxially fixed to the second rotating shaft (53) and the first rotating shaft (401), respectively, and the transmission chain (55) is installed between the two transmission sprockets (54); The photovoltaic panel (2) is arranged to be tilted downwardly toward a side away from the wind wheel (4), and the ring network cabinet (1) is provided with a water tank (6) located on the side of the photovoltaic panel (2) tilted downwardly, the side end of the water tank (6) is fixedly connected to an extension pipe (7), the bottom end of the second rotating shaft (53) rotates through the extension pipe (7) and is provided with a water wheel (9), the lower end of the extension pipe (7) is fixedly connected to a drainage pipe (8), and the drainage pipe (8) is sleeved on the outside of the water wheel (9).

2. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 1, characterized in that: The upper end of the water storage tank (6) is arranged as an inclined surface, and the inclined surface of the water storage tank (6) is arranged to be inclined downwardly toward a side away from the ring network cabinet (1), and a filter screen (10) is installed on the upper end surface of the water storage tank (6) in accordance with the inclined surface.

3. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 1, characterized in that: The side of the water storage tank (6) that is in contact with the ring network cabinet (1) is provided with a heat conduction plate, and the water storage tank (6) except for the part that is in contact with the ring network cabinet (1) is made of heat insulating material.

4. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 1, characterized in that: A cabinet door (101) is provided at one end of the ring network cabinet (1) away from the water storage tank (6).

5. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 1, characterized in that: Water retaining plates (11) are installed on both sides of the upper end of the photovoltaic panel (2) parallel to the threaded screw rod (31).

6. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 5, characterized in that: The photovoltaic panel (2) is provided with a groove (201) adapted to the water retaining plate (11), and a water-swellable rubber block (13) is connected between the water retaining plate (11) and the bottom end of the groove (201).

7. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 6, characterized in that: The bottom end of the groove (201) is provided with a limiting groove (202) whose size is larger than that of the groove (201), the bottom end of the water retaining plate (11) is installed with a limiting block (12), and the water-swellable rubber block (13) is fixed between the limiting block (12) and the bottom end of the limiting groove (202).

8. The energy-saving power supply and storage device of a photovoltaic power generation system according to claim 1, characterized in that: Flexible protective sleeves are connected between both side ends of the cleaning block (32) and the photovoltaic panel (2), and the flexible protective sleeves are sleeved on the outside of the threaded screw (31).

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