Photovoltaic power generation device and control method

Abstract

The application discloses a kind of photovoltaic power generation device and control method, belong to photovoltaic power generation field.A kind of photovoltaic power generation device, including two groups of support frame, rotating shaft being rotationally connected between two groups of support frame, mounting bracket being fixedly connected on rotating shaft and photovoltaic panel being fixed at the end of mounting bracket, further include: two groups of installation box, two groups of installation box are installed at the two sides of photovoltaic panel respectively, slidingly connected between two groups of installation box has moving plate, the bottom of moving plate is fixedly connected with cleaning wipe, and the cleaning wipe is slidably attached to the end face of photovoltaic panel.By driving photovoltaic panel to rotate around rotating shaft, it is rotated following sunlight, maximum solar energy collection is realized, and the collection efficiency of solar energy is improved;And cooperate the setting of moving plate and cleaning wipe, can realize effective cleaning to the light-receiving surface of photovoltaic panel in the process of photovoltaic panel overturning, ensure the neatness of the surface of photovoltaic panel, realize maximum photoelectric conversion, and improve the power generation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation, and particularly relates to a photovoltaic power generation device and a control method. BACKGROUND

[0002] Photovoltaic power generation is a technology that converts solar energy into electricity directly by using the photoelectric effect of semiconductor materials. With the increasing demand for clean energy and the cost reduction brought by technological progress, photovoltaic power generation has become an important part of addressing climate change and energy transition.

[0003] Photovoltaic power generation is based on the photoelectric effect in semiconductor materials. When sunlight shines on the photovoltaic panel, photons interact with atoms in the semiconductor material, causing electrons to gain enough energy to transition to the conduction band, forming free electrons and hole pairs. These charge carriers are separated by the built-in electric field and move in opposite directions, forming an electric current in the external circuit.

[0004] Currently, existing photovoltaic power generation devices still have many limitations. For example, the orientation of the photovoltaic panel is fixed, which causes the photovoltaic panel to be unable to maintain the optimal receiving angle with the sunlight at different times of the day, resulting in a loss of light energy and reducing the collection efficiency. Moreover, the light-receiving surface of the photovoltaic panel will be covered with dust and stains due to long-term exposure to the outside world, which reduces the photoelectric conversion efficiency. Therefore, a photovoltaic power generation device and a control method are proposed. SUMMARY

[0005] The purpose of the present application is to solve the problem that the existing technology cannot maintain the optimal receiving angle of the photovoltaic panel with the sunlight, reducing the collection efficiency, and the dust and stains from the outside world will form a barrier on the surface of the photovoltaic panel, reducing the photoelectric conversion efficiency. A photovoltaic power generation device and a control method are proposed.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The utility model provides a kind of photovoltaic power generation device, including two groups of support frame, rotating shaft being connected between two groups of support frame, fixedly connected on rotating shaft mounting frame and fixed in the end of mounting frame photovoltaic board, further including: two groups of installation box, two groups of the installation box are installed in the both sides of photovoltaic board, slidingly connected between two groups of the installation box mobile plate, the bottom of the mobile plate is fixedly connected with cleaning wipe, the cleaning wipe and photovoltaic board end face adhere to slide, the drive part of being provided on the support frame drives photovoltaic board to rotate, and make cleaning wipe reciprocating slide, rainwater collection box, the rainwater collection box is fixed on the top of one group of support frame, the top of the inner chamber of the rainwater collection box is fixedly connected with filter plate, the both sides of each installation box are fixedly connected with liquid storage box, wherein, the support frame is provided with the flow guide part of being filled into liquid storage box in rainwater collection box water flow, and the both ends of the installation box are provided with the switching part of the flow guide state of different position liquid storage box.

[0008] In order to improve the power generation effect, preferably, the drive part includes a drive motor, the drive motor is fixed on the support frame, a single tooth gear is fixedly connected on the output shaft of the drive motor, one end of the rotating shaft penetrates the support frame and is fixedly connected with a drive gear, the single tooth gear is meshingly connected with the drive gear, and a counterweight is fixedly connected to the top of the mobile plate.

[0009] Further, the other end of the rotating shaft penetrates the other side support frame and is fixedly connected with a worm, a worm wheel is rotatably connected to the support frame, and the worm is meshingly connected with the worm wheel.

[0010] Further, a controller is installed on the support frame and electrically connected with the drive motor.

[0011] In order to improve the neatness of the light guide surface of the photovoltaic board, preferably, the flow guide part includes a piston box, the piston box is fixed on the support frame, a piston plate is slidingly connected in the piston box, a push-pull rod is hingedly connected to the top of the piston plate, the other end of the push-pull rod is rotatably connected to the side wall of the single tooth gear, the bottom end of the rainwater collection box is connected to the bottom of the inner chamber of the piston box through a liquid suction pipe, and a one-way valve is arranged in the liquid suction pipe.

[0012] Further, a first guide groove is formed in the support frame on the same side as the piston box, a second guide groove is formed in the rotating shaft, and a third guide groove is formed in the mounting frame, the first guide groove, the second guide groove and the third guide groove are sequentially connected, a one-way valve is arranged in the first guide groove, liquid guide pipes are fixedly connected and communicated on both sides of the third guide groove, and the other end of the liquid guide pipe is connected to the inner chamber of the corresponding liquid storage box.

[0013] In order to better realize the cleaning effect, preferably, the liquid storage box is provided with a liquid inlet between the liquid storage box and the inner cavity of the mounting box, the switching part comprises four groups of switching plates, the four groups of switching plates are respectively slidably connected to the four ends of the two groups of mounting boxes, the switching plates penetrate through the ends of the mounting boxes, the switching plates are tightly attached to the inner walls of the mounting boxes, reset springs are fixedly connected between the outer ends of the switching plates and the ends of the mounting boxes, a liquid guide groove is formed in the moving plate, a plurality of liquid drop holes are formed at the bottom of the liquid guide groove at equal intervals, and the output ends of the liquid drop holes are located at the top of the cleaning cloth.

[0014] Preferably, the liquid guide groove is arranged at the center of the end of the moving plate, the center of the liquid guide groove and the center of the liquid inlet are on the same axis, and the distance from the end side wall of the moving plate to the liquid guide groove is greater than the inner diameter of the liquid inlet.

[0015] In order to reduce the friction in the mounting box, preferably, the mounting box is provided with a dust discharge groove at both ends, and the dust discharge groove is located at the bottom side of the end of the mounting box.

[0016] A photovoltaic power generation control method, the steps are as follows:

[0017] Step 1: set the driving motor to rotate at a certain time and number of turns through the controller, so that the photovoltaic panel follows the sunlight to rotate;

[0018] Step 2: store the solar energy converted into electrical energy by the photovoltaic panel;

[0019] Step 3: clean the light-receiving surface of the photovoltaic panel with the cleaning cloth during the rotation of the photovoltaic panel along the rotation axis;

[0020] Step 4: in the rotation of the rotation axis, rainwater or artificially added water flow is extracted to the cleaning cloth to realize washing and cleaning.

[0021] Compared with the prior art, the present application provides a photovoltaic power generation device and a control method, which has the following beneficial effects:

[0022] 1. The photovoltaic power generation device, by driving the photovoltaic panel to rotate around the rotation axis, makes it follow the sunlight to rotate, realizes the maximum solar energy collection, improves the solar energy collection efficiency; and cooperates with the setting of the moving plate and the cleaning cloth, can realize effective cleaning of the light-receiving surface of the photovoltaic panel during the turning of the photovoltaic panel, ensure the cleanliness of the surface of the photovoltaic panel, realize the maximum photoelectric conversion, and improve the power generation efficiency.

[0023] 2. When the single toothed gear rotates, the piston plate and push-pull rod work together to fill the liquid storage box with filtered rainwater from the rain collection box. When the moving plate moves to the lower end of the installation box, the liquid inlet connects with the liquid guide groove. At this time, clean water will wet the cleaning wipe. The wet cleaning wipe can better clean the surface of the photovoltaic panel, further ensuring the cleanliness of the photovoltaic panel surface and improving the power generation efficiency of the photovoltaic panel. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic power generation device proposed in this invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of a photovoltaic power generation device proposed in this invention. Figure 2 ;

[0026] Figure 3 A photovoltaic power generation device proposed in this invention Figure 2 Enlarged structural diagram of region A in the middle;

[0027] Figure 4 This is a partial cross-sectional structural diagram of a photovoltaic power generation device proposed in this invention;

[0028] Figure 5 A photovoltaic power generation device proposed in this invention Figure 4 Enlarged structural diagram of region B in the middle;

[0029] Figure 6 This is a schematic diagram of a partial cross-sectional view of a photovoltaic power generation device proposed in this invention;

[0030] Figure 7 A photovoltaic power generation device proposed in this invention Figure 6 Enlarged structural diagram of region C in the middle;

[0031] Figure 8 A photovoltaic power generation device proposed in this invention Figure 6 A magnified schematic diagram of the D region;

[0032] Figure 9 This is a flowchart of a photovoltaic power generation control method proposed in this invention.

[0033] In the figure: 1, support frame; 2, rotating shaft; 21, mounting frame; 22, photovoltaic panel; 3, mounting box; 31, moving plate; 32, cleaning wipe; 33, ash discharge groove; 4, rainwater collecting box; 41, filter plate; 42, liquid storage box; 5, driving motor; 51, single tooth gear; 52, driving gear; 53, controller; 54, counterweight; 55, worm; 56, worm gear; 6, piston box; 61, piston plate; 62, push-pull rod; 63, liquid suction pipe; 64, first guide groove; 641, second guide groove; 642, third guide groove; 65, liquid guide pipe; 7, liquid inlet; 71, switching plate; 72, return spring; 73, liquid guide groove; 731, liquid drop hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] Embodiment one:

[0037] With reference to Figures 1-8 A photovoltaic power generation device, comprising two groups of support frames 1, a rotating shaft 2 rotatably connected between the two groups of support frames 1, a mounting frame 21 fixedly connected to the rotating shaft 2, and a photovoltaic panel 22 fixed to the end of the mounting frame 21, further comprising: two groups of mounting boxes 3, the two groups of mounting boxes 3 are respectively installed on the two sides of the photovoltaic panel 22, and a moving plate 31 is slidably connected between the two groups of mounting boxes 3, the bottom of the moving plate 31 is fixedly connected with a cleaning wipe 32, the cleaning wipe 32 is in sliding fit with the end face of the photovoltaic panel 22, the support frame 1 is provided with a driving part for driving the photovoltaic panel 22 to rotate and reciprocatingly sliding the cleaning wipe 32, a rainwater collecting box 4 is fixed to the top of one of the support frames 1, a filter plate 41 is fixedly connected to the top of the inner cavity of the rainwater collecting box 4, and a liquid storage box 42 is fixedly connected to the two sides of each mounting box 3, wherein the support frame 1 is provided with a flow guide part for filling the water in the rainwater collecting box 4 into the liquid storage box 42, and the two ends of the mounting box 3 are provided with a switching part for switching the flow guide state of the liquid storage box 42 at different positions.

[0038] With reference to Figure 1 , Figure 2The driving part comprises a driving motor 5 fixed on the support frame 1, a single-tooth gear 51 fixedly connected to an output shaft of the driving motor 5, a driving gear 52 fixedly connected to one end of the rotating shaft 2 penetrating through the support frame 1, and a counterweight 54 fixedly connected to the top of the moving plate 31, and a controller 53 installed on the support frame 1 and electrically connected to the driving motor 5.

[0039] With the above structure, when the driving motor 5 rotates one circle, the rotating shaft 2 rotates a corresponding angle through the meshing relationship between the single-tooth gear 51 and the driving gear 52, so that the photovoltaic panel 22 can always rotate following the sunlight in use, the maximum solar energy collection is realized, and the solar energy collection efficiency is improved. In addition, at night, the light-receiving surface of the photovoltaic panel 22 is turned down, so that the adhesion of dust, dew and the like at night can be effectively avoided, the photovoltaic panel 22 is protected, and the power generation efficiency of the photovoltaic panel 22 is ensured. In addition, due to the continuous movement of the photovoltaic panel 22, animals such as birds are difficult to stay on it, which helps to protect the safety of the equipment and reduce the failure rate of the equipment. In addition, in the process of rotating the photovoltaic panel 22, when it deviates from the horizontal state and is inclined, the moving plate 31 will be driven to slide along the two side installation boxes 3 under the gravity of the counterweight 54, at this time, the cleaning wiper 32 will slide along the light-receiving surface of the photovoltaic panel 22, so that the light-receiving surface of the photovoltaic panel 22 can be effectively cleaned, the adhesion of dust, dirt and the like on the surface of the photovoltaic panel 22 is avoided, the cleanliness of the surface of the photovoltaic panel 22 is ensured, the maximum photoelectric conversion is realized, and the power generation efficiency is improved.

[0040] With reference to Figure 2 , Figure 3 The other end of the rotating shaft 2 penetrates through the other side support frame 1 and is fixedly connected with a worm 55, the support frame 1 is rotatably connected with a worm wheel 56, and the worm 55 is meshingly connected with the worm wheel 56. The self-locking effect of the worm 55 and the worm wheel 56 can ensure that the photovoltaic panel 22 always rotates in one direction, avoid reverse rotation under the action of gravity, and ensure the rotating effect of the photovoltaic panel 22.

[0041] With reference to Figure 2 , Figures 4-8The flow guide part comprises a piston box 6 fixed on the support frame 1, a piston plate 61 slidingly connected in the piston box 6, a push-pull rod 62 hingedly connected to the top of the piston plate 61, the other end of the push-pull rod 62 being rotatably connected to the side wall of the single tooth gear 51, the bottom end of the rain collecting box 4 being in communication with the bottom of the inner cavity of the piston box 6 through a liquid pumping pipe 63, and a one-way valve being arranged in the liquid pumping pipe 63; a first guide groove 64 is formed in the support frame 1 on the same side of the piston box 6, a second guide groove 641 is formed in the rotating shaft 2, and a third guide groove 642 is formed in the mounting frame 21, the first guide groove 64, the second guide groove 641 and the third guide groove 642 being sequentially communicated, and a one-way valve being arranged in the first guide groove 64, the two sides of the third guide groove 642 being fixedly and communicatively provided with liquid guide pipes 65, the other ends of the liquid guide pipes 65 being in communication with the inner cavities of the corresponding liquid storage boxes 42; a liquid inlet 7 is formed between the liquid storage box 42 and the inner cavity of the mounting box 3, and the switching part comprises four switching plates 71 slidingly connected to the four end portions of the two mounting boxes 3, the switching plates 71 penetrating through the end portions of the mounting box 3, the switching plates 71 being closely attached to the inner walls of the mounting box 3, and a reset spring 72 being fixedly connected between the outer end portion of the switching plate 71 and the end portion of the mounting box 3, a liquid guide groove 73 being formed in the moving plate 31, a plurality of liquid dripping holes 731 being equidistantly formed in the bottom of the liquid guide groove 73, and the output ends of the liquid dripping holes 731 being located on the top of the cleaning wipe 32.

[0042] Through the above structure, rainwater can be collected by the rain collecting box 4 in rainy days, and when the single tooth gear 51 rotates, the piston plate 61 is driven to reciprocate up and down in the piston box 6 by the push-pull rod 62, when the piston plate 61 slides upward, suction is generated in the piston box 6, thereby opening the one-way valve in the liquid pumping pipe 63, so that the rainwater in the rain collecting box 4 is sucked into the piston box 6 after being filtered by the filter plate 41, then when the piston plate 61 slides downward, the lower cavity of the piston box 6 is compressed, and the one-way valve in the first guide groove 64 is opened, so that the sucked clean water enters the liquid storage box 42 through the first guide groove 64, the second guide groove 641, the third guide groove 642 and the liquid guide pipe 65, when the inclination angle of the photovoltaic panel 22 is large enough, the moving plate 31 slides to the inclined bottom end of the photovoltaic panel 22, and under the gravity of the moving plate 31 and the counterweight 54, the switching plate 71 slides to one side of the stretching reset spring 72, so that the end portion of the moving plate 31 covers the liquid inlet 7, and finally the liquid inlet 7 is in communication with the liquid guide groove 73, and finally the liquid in the liquid storage box 42 drips onto the cleaning wipe 32 through the liquid dripping holes 731, so as to wet the cleaning wipe 32, which can clean the cleaning wipe 32, and the wet cleaning wipe 32 can better clean the surface of the photovoltaic panel 22, thereby further ensuring the cleanliness of the surface of the photovoltaic panel 22 and improving the power generation efficiency of the photovoltaic panel 22; and the rainwater is collected and filtered for washing, thereby reducing the consumption of water resources and improving the energy-saving effect.

[0043] In addition, by setting the reset spring 72, the falling impact force of the moving plate 31 can be effectively reduced, the impact wear is reduced, and the durability is improved; and water can be added to the rainwater collecting box 4 by artificial periodically to avoid the situation that it is difficult to realize water washing on the surface of the photovoltaic panel 22 in the long-term little rain or no rain season.

[0044] Referring to Figure 4 , Figure 5 The liquid guide groove 73 is arranged at the center of the end of the moving plate 31, the liquid guide groove 73 and the center of the liquid inlet 7 are on the same axis, and the distance from the end side wall of the moving plate 31 to the liquid guide groove 73 is greater than the inner diameter of the liquid inlet 7; as described above, in the process of pushing the switching plate 71 at the end of the moving plate 31, it will cover the liquid inlet 7 first, and then the liquid inlet 7 will be connected with the liquid guide groove 73, so as to avoid the splashing of clean water and ensure the sealing effect of the butt joint.

[0045] Referring to Figure 2 , Figure 5 The two ends of the mounting box 3 are provided with dust discharge grooves 33, and the dust discharge grooves 33 are located at the bottom side of the end of the mounting box 3; because the slide opening is arranged on the side of the mounting box 3 facing the photovoltaic panel 22, the dust in the outside will enter the mounting box 3, and in the process of sliding back and forth of the moving plate 31, the dust can be pushed out from the dust discharge groove 33, so as to reduce the dust content in the mounting box 3, avoid the situation that the friction force in the mounting box 3 is too large, and ensure the smooth sliding of the moving plate 31.

[0046] Example two:

[0047] Referring to Figures 1-8 The photovoltaic power generation control method is basically the same as that of example one, and based on example one, the steps are as follows:

[0048] Step one: set the driving motor 5 to rotate at a certain time and a certain number of turns through the controller 53, so that the photovoltaic panel 22 rotates with the sunlight;

[0049] Step two: store the solar energy converted into electrical energy by the photovoltaic panel 22;

[0050] Step three: clean the light-receiving surface of the photovoltaic panel 22 by using the cleaning cloth 32 in the process of rotating the photovoltaic panel 22 along the rotating shaft 2;

[0051] Step four: in the process of rotating the rotating shaft 2, rainwater or artificially added water flow is extracted to the cleaning cloth 32 to realize washing and cleaning.

[0052] Referring to Figures 1-8In use, according to the solar light deviation speed of the use area, the driving motor 5 is set to rotate by the controller 53, when the driving motor 5 rotates one circle, the rotating shaft 2 rotates corresponding angle through the meshing relationship between the single tooth gear 51 and the driving gear 52, so that the photovoltaic panel 22 can rotate following the sunlight, the maximum solar energy collection is realized, the solar energy collection efficiency is improved, and the light receiving surface of the photovoltaic panel 22 is turned down at night, so that the adhesion of dust, dew and the like at night is effectively avoided, the photovoltaic panel 22 is protected, and the power generation efficiency of the photovoltaic panel 22 is ensured; and due to the continuous movement of the photovoltaic panel 22, animals such as birds will not stay on the photovoltaic panel 22, the safety of the equipment is protected, and the equipment failure rate is reduced; in addition, in the process of rotating of the photovoltaic panel 22, when the photovoltaic panel 22 deviates from the horizontal state and is inclined, the moving plate 31 is driven to slide along the two side installation boxes 3 under the action of the gravity of the counterweight 54, at this time, the cleaning wiper 32 slides along the light receiving surface of the photovoltaic panel 22, so that the light receiving surface of the photovoltaic panel 22 is effectively cleaned, the adhesion of dust, dirt and the like on the surface of the photovoltaic panel 22 is avoided, the cleanliness of the surface of the photovoltaic panel 22 is ensured, the maximum photoelectric conversion is realized, and the power generation efficiency is improved.

[0053] In addition, rainwater can be collected through the rainwater collecting box 4 in rainy days, and the piston plate 61 is driven to reciprocate in the piston box 6 when the single tooth gear 51 rotates, and the piston plate 61 slides upward, so that the suction force is generated in the piston box 6, the one-way valve in the liquid suction pipe 63 is opened, the rainwater in the rainwater collecting box 4 is filtered through the filter plate 41 and then is sucked into the piston box 6, and then when the piston plate 61 slides downward, the lower cavity of the piston box 6 is compressed, the one-way valve in the first guide groove 64 is opened, and the sucked clean water enters the liquid storage box 42 along the first guide groove 64, the second guide groove 641 and the third guide groove 642 and the liquid guide pipe 65, when the inclination angle of the photovoltaic panel 22 is large enough, the moving plate 31 slides to the inclined bottom end of the photovoltaic panel 22, the moving plate 31 and the counterweight 54 are gravity-acted, the switching plate 71 is driven to slide to one side of the stretching reset spring 72, so that the end of the moving plate 31 covers the liquid inlet 7, and finally the liquid inlet 7 is in communication with the liquid guide groove 73, and finally the liquid in the liquid storage box 42 drops onto the cleaning wiper 32 through the liquid drop hole 731, so that the cleaning wiper 32 is wetted, the cleaning wiper 32 is cleaned, the cleaning wiper 32 can better clean the surface of the photovoltaic panel 22, the cleanliness of the surface of the photovoltaic panel 22 is further ensured, and the power generation efficiency of the photovoltaic panel 22 is improved; and the rainwater is collected and filtered, the water resource consumption is reduced, and the energy saving effect is improved.

[0054] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A photovoltaic power generation device, comprising two groups of support frames (1), a rotating shaft (2) rotatably connected between the two groups of support frames (1), a mounting frame (21) fixedly connected to the rotating shaft (2), and a photovoltaic panel (22) fixed to an end of the mounting frame (21), characterized in that, Also includes: Two groups of installation box (3), two groups of installation box (3) are installed on both sides of photovoltaic panel (22) respectively, two groups of installation box (3) are slidably connected between the moving plate (31), the bottom of the moving plate (31) is fixedly connected with the cleaning wipe (32), the cleaning wipe (32) is slidably attached to the end face of the photovoltaic panel (22), the support frame (1) is provided with a driving part for driving the photovoltaic panel (22) to rotate and reciprocatingly sliding the cleaning wipe (32), Rainwater collecting box (4), the rainwater collecting box (4) is fixed on the top of one of the support frames (1), the filter plate (41) is fixedly connected to the inner cavity of the rainwater collecting box (4), and the liquid storage box (42) is fixedly connected to the two sides of each installation box (3), Wherein, the support frame (1) is provided with a flow guide part for filling the water flow in the rainwater collecting box (4) into the liquid storage box (42), and the installation box (3) is provided with a switching part for switching the flow guide state of the liquid storage box (42) in different positions at both ends; The driving part includes a driving motor (5), the driving motor (5) is fixed on the support frame (1), the output shaft of the driving motor (5) is fixedly connected with a single tooth gear (51), one end of the rotating shaft (2) penetrates the support frame (1) and is fixedly connected with a driving gear (52), the single tooth gear (51) is meshingly connected with the driving gear (52), and the top of the moving plate (31) is fixedly connected with a counterweight (54); The flow guide part includes a piston box (6), the piston box (6) is fixed on the support frame (1), the piston box (6) is slidably connected with a piston plate (61), the top of the piston plate (61) is hingedly connected with a push-pull rod (62), the other end of the push-pull rod (62) is rotatably connected on the side wall of the single tooth gear (51), the bottom end of the rainwater collecting box (4) is connected with the bottom of the inner cavity of the piston box (6) through the liquid suction pipe (63), and the liquid suction pipe (63) is provided with a one-way valve; The support frame (1) on the same side of the piston box (6) is provided with a first guide groove (64), the rotating shaft (2) is provided with a second guide groove (641), and the mounting frame (21) is provided with a third guide groove (642), the first guide groove (64), the second guide groove (641) and the third guide groove (642) are sequentially communicated, and the first guide groove (64) is provided with a one-way valve, the two sides of the third guide groove (642) are fixedly and continuously provided with a liquid guide pipe (65), and the other end of the liquid guide pipe (65) is continuously communicated with the inner cavity of the corresponding liquid storage box (42). The liquid storage box (42) is provided with a liquid inlet (7) between the inner cavity of the mounting box (3), the switching part includes four groups of switching plates (71), the four groups of switching plates (71) are respectively connected in sliding mode at the four ends of the two groups of mounting boxes (3), the switching plates (71) penetrate the ends of the mounting boxes (3), the switching plates (71) are tightly attached to the inner walls of the mounting boxes (3), reset springs (72) are fixedly connected between the outer ends of the switching plates (71) and the ends of the mounting boxes (3), the moving plate (31) is provided with a liquid guide groove (73), a plurality of groups of liquid drop holes (731) are equidistantly arranged at the bottom of the liquid guide groove (73), and the output ends of the liquid drop holes (731) are located at the top of the cleaning wiper (32).

2. A photovoltaic power device according to claim 1, wherein The other end of the rotating shaft (2) penetrates the other side support frame (1) and is fixedly connected with a worm (55), the support frame (1) is rotatably connected with a worm wheel (56), and the worm (55) is in meshing connection with the worm wheel (56).

3. A photovoltaic power device according to claim 1, wherein The support frame (1) is provided with a controller (53), and the controller (53) is electrically connected with the driving motor (5).

4. A photovoltaic power device according to claim 1, wherein The liquid guide groove (73) is arranged at the center of the end of the moving plate (31), the liquid guide groove (73) and the center of the liquid inlet (7) are on the same axis, and the distance from the end side wall of the moving plate (31) to the liquid guide groove (73) is greater than the inner diameter of the liquid inlet (7).

5. A photovoltaic power device according to claim 1, wherein The mounting box (3) is provided with a dust discharge groove (33) at both ends, and the dust discharge groove (33) is located at the bottom side of the end of the mounting box (3).

6. A photovoltaic power generation control method, using the photovoltaic power generation device according to any one of claims 1 to 5, characterized by, The steps are as follows: Step one: set the driving motor (5) to rotate regularly and regularly through the controller (53), so that the photovoltaic panel (22) rotates with the sunlight; Step two: store the solar energy converted into electrical energy by the photovoltaic panel (22); Step three: clean the light-receiving surface of the photovoltaic panel (22) by using the cleaning wiper (32) during the rotation of the photovoltaic panel (22) along the rotating shaft (2); Step four: during the rotation of the rotating shaft (2), rainwater or artificially added water flow is extracted to the cleaning wiper (32) to realize flushing and cleaning.

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