Photovoltaic device and control method

Abstract

The embodiment of the invention provides a photovoltaic device and a control method, the photovoltaic device comprises a photovoltaic assembly, a heat absorption assembly and a cleaning assembly, and the photovoltaic assembly comprises a photovoltaic panel; the heat absorption assembly comprises a cold water tank, a heat absorption pipe and a hot water tank, the cold water tank communicates with a water inlet of the heat absorption pipe, the hot water tank communicates with a water outlet of the heat absorption pipe, the heat absorption pipe is tightly attached to the back face of the photovoltaic panel, and the cleaning assembly is arranged at the top of the photovoltaic panel and used for cleaning the photovoltaic panel. When the cold water flows through the heat absorption pipe, the cold water absorbs heat of the photovoltaic panel through the heat absorption pipe to become hot water, the hot water flows into the hot water tank through the heat absorption pipe, and domestic hot water is provided for users through the hot water tank, so that the waste heat utilization rate of the photovoltaic module is improved, and energy waste is reduced. The photovoltaic panel is cleaned through the cleaning assembly, dirt deposited on the surface of the photovoltaic panel is reduced, the sunlight absorption efficiency of the photovoltaic panel is improved, and therefore the power generation efficiency of the photovoltaic assembly is improved.

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the technical field of solar power generation, and particularly relate to a photovoltaic device and a control method. Background Art

[0002] With the increasing global demand for clean energy, solar energy, as a renewable and pollution-free energy source, has been widely used. Photovoltaic panels are the core components in solar power generation systems, and their working efficiency directly affects the power generation performance of the entire system. However, photovoltaic panels will face some problems during operation.

[0003] On the one hand, while photovoltaic panels absorb solar energy and convert it into electrical energy, they will generate a large amount of waste heat. If this waste heat cannot be effectively utilized, it will not only cause energy waste, but also may lead to too high a temperature of the photovoltaic panels due to heat accumulation, affecting their power generation efficiency and service life.

[0004] On the other hand, photovoltaic panels are exposed to the outdoor environment for a long time, and dirt such as dust is likely to accumulate on their surfaces. The accumulation of dust will reduce the light absorption efficiency of the photovoltaic panels, thereby affecting the power generation efficiency. Summary of the Invention

[0005] Embodiments of the present disclosure aim to at least solve one of the technical problems existing in the prior art, and provide a photovoltaic device and a control method.

[0006] The first aspect of the present disclosure provides a photovoltaic device, which includes:

[0007] A photovoltaic module, the photovoltaic module includes a photovoltaic panel;

[0008] A heat absorption component, the heat absorption component includes: a cold water tank, a heat absorption pipe, and a hot water tank. The cold water tank is connected to the water inlet of the heat absorption pipe, the hot water tank is connected to the water outlet of the heat absorption pipe, and the heat absorption pipe is closely attached to the back of the photovoltaic panel;

[0009] A cleaning component, the cleaning component is arranged on the top of the photovoltaic panel, and the cleaning component is used to clean the photovoltaic panel.

[0010] In some embodiments of the present disclosure, the photovoltaic module further includes:

[0011] A driving member;

[0012] A sliding rod, the driving member is drivingly connected to the sliding rod to drive the sliding rod to move. The moving direction of the sliding rod is perpendicular to the length direction of the photovoltaic panel and perpendicular to the height direction of the photovoltaic panel;

[0013] A telescopic rod is provided at the top of the sliding rod, and the output end of the telescopic rod is connected to the back of the photovoltaic panel. The telescopic rod is configured to expand and contract along the height direction of the photovoltaic panel.

[0014] In some embodiments of the present disclosure, the sliding rod extends along the length direction of the photovoltaic panel.

[0015] In some embodiments of the present disclosure, a plurality of the telescopic rods are arranged at intervals and evenly along the length direction of the sliding rod.

[0016] In some embodiments of the present disclosure, the photovoltaic panel includes a plurality of photovoltaic plate segments, and the number of the telescopic rods is twice the number of the photovoltaic panels. Each photovoltaic panel is provided with two corresponding telescopic rods.

[0017] In some embodiments of the present disclosure, the driving member includes:

[0018] A motor;

[0019] A driving rod, the motor is drivingly connected to the driving rod, and the driving rod is connected to the sliding rod.

[0020] In some embodiments of the present disclosure, the heat absorption assembly further includes:

[0021] A pump, the pump communicates the cold water tank with the inlet of the heat absorption pipe.

[0022] In some embodiments of the present disclosure, the cleaning assembly includes:

[0023] A pumping water storage tank;

[0024] A water delivery pipe, the water delivery pipe communicates with the outlet of the pumping water storage tank;

[0025] An impact type water mist device, the impact type water mist device is provided at the top of the photovoltaic panel, and the water delivery pipe communicates with the water inlet of the impact type water mist device.

[0026] In some embodiments of the present disclosure, the impact type water mist device includes:

[0027] A baffle, the baffle is provided above the photovoltaic panel;

[0028] A spray head, the water inlet of the spray head communicates with the water delivery pipe, and the water outlet of the spray head is perpendicular to the baffle.

[0029] The second aspect of the present disclosure proposes a control method for a photovoltaic device, which is used to control the photovoltaic device according to any one of the above embodiments. The method is characterized in that the method includes:

[0030] Control the cold water in the cold water tank to enter the heat absorption pipe according to the temperature of the photovoltaic panel, and then flow into the hot water tank.

[0031] Control the cleaning component to clean the photovoltaic module according to the surface cleanliness of the photovoltaic panel.

[0032] The photovoltaic device and control method of the embodiments of the present disclosure. The photovoltaic device includes a photovoltaic module, a heat absorption component and a cleaning component. Among them, the heat absorption component includes a cold water tank, a heat absorption pipe and a hot water tank. The heat absorption pipe is arranged on the back of the photovoltaic panel. The cold water in the cold water tank is delivered to the heat absorption pipe on the back of the photovoltaic panel. When the cold water flows through the heat absorption pipe, the cold water absorbs the heat of the photovoltaic panel through the heat absorption pipe and becomes hot water, and then flows into the hot water tank through the heat absorption pipe for storage or temporary storage. The hot water tank can be connected to an external hot water supply system to provide domestic hot water or other application scenarios that require hot water for users, so as to improve the waste heat utilization rate of the photovoltaic module, reduce energy waste, avoid the temperature of the photovoltaic panel of the photovoltaic module from being too high, and ensure the power generation efficiency and service life of the photovoltaic module. The cleaning component is arranged on the top of the photovoltaic panel of the photovoltaic module to clean the photovoltaic panel, reduce the deposited dirt on the surface of the photovoltaic panel, improve the sunlight absorption efficiency of the photovoltaic panel, thereby improving the power generation efficiency of the photovoltaic module and the utilization rate of resources. Description of the Drawings

[0033] Figure 1 Structural schematic diagram (first perspective) of the control method of the photovoltaic device of the embodiments of the present disclosure;

[0034] Figure 2 Structural schematic diagram (second perspective) of the control method of the photovoltaic device of the embodiments of the present disclosure;

[0035] Figure 3 For Figure 2 First partial structural schematic diagram of the control method of the photovoltaic device shown;

[0036] Figure 4 For Figure 2 Second partial structural schematic diagram of the control method of the photovoltaic device described;

[0037] Figure 5 For Figure 2 Third partial structural schematic diagram of the control method of the photovoltaic device described.

[0038] The reference numerals in the drawings are shown as follows:

[0039] 1. Roof; 2. Cold water tank; 3. Hot water tank; 4. Photovoltaic panel; 5. Pumping water storage tank; 6. Pump; 7. Driving member; 8. Cold water pipe; 9. Hot water outlet; 10. Hot water pipe; 11. Connecting pipe; 12. Impinging water mist device; 13. Telescopic rod; 14. Water supply pipe; 15. Sliding rod; 16. Heat absorption pipe; 17. Driving rod; 18. Motor; 19. Water pipe fixer; 20. Sprinkler head; 21. Baffle plate. Detailed implementation manners

[0040] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0041] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0042] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0043] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure relative to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "upper", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "upper" other elements or features. Therefore, the exemplary term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are accordingly interpreted.

[0044] As Figures 1 to 5 shown, a first aspect of the present disclosure provides a photovoltaic device, which includes a photovoltaic module, a heat absorption module, and a cleaning module. Specifically, the photovoltaic module includes a photovoltaic panel 4, and the heat absorption module includes a cold water tank 2, a heat absorption pipe 16, and a hot water tank 3. The cold water tank 2 is connected to the water inlet of the heat absorption pipe 16, and the hot water tank 3 is connected to the water outlet of the heat absorption pipe 16. The heat absorption pipe 16 is closely attached to the back surface of the photovoltaic panel 4, and the cleaning module is arranged on the top of the photovoltaic panel 4 for cleaning the photovoltaic panel 4.

[0045] The photovoltaic device of the embodiment of the present disclosure includes a photovoltaic module, a heat absorption module, and a cleaning module. Among them, the heat absorption module includes a cold water tank 2, a heat absorption pipe 16, and a hot water tank 3. The heat absorption pipe 16 is arranged on the back surface of the photovoltaic panel 4. Cold water in the cold water tank 2 is delivered to the heat absorption pipe 16 on the back surface of the photovoltaic panel 4. When the cold water flows through the heat absorption pipe 16, the cold water absorbs the heat of the photovoltaic panel 4 through the heat absorption pipe 16 and turns into hot water, and then flows into the hot water tank 3 through the heat absorption pipe 16 for storage or temporary storage. The hot water tank 3 can be connected to an external hot water supply system to provide domestic hot water or other application scenarios that require hot water for users, so as to improve the utilization rate of the waste heat of the photovoltaic module, reduce energy waste, avoid the temperature of the photovoltaic panel 4 of the photovoltaic module from being too high, and ensure the power generation efficiency and service life of the photovoltaic module. The cleaning module is arranged on the top of the photovoltaic panel 4 of the photovoltaic module to clean the photovoltaic panel 4, reduce the deposited dirt on the surface of the photovoltaic panel 4, improve the sunlight absorption efficiency of the photovoltaic panel 4, thereby improving the power generation efficiency of the photovoltaic module and the utilization rate of resources.

[0046] In some embodiments of the present disclosure, the photovoltaic module further includes: a driving member 7, a sliding rod 15, and a telescopic rod 13. The driving member 7 is drivingly connected to the sliding rod 15 to drive the sliding rod 15 to move. The moving direction of the sliding rod 15 is perpendicular to the length direction of the photovoltaic panel 4 and perpendicular to the height direction of the photovoltaic panel 4, that is, the driving member 7 drives the sliding rod 15 to move along a direction perpendicular to the length direction of the photovoltaic panel 4 and perpendicular to the height direction of the photovoltaic panel 4. The telescopic rod 13 is disposed at the top of the sliding rod 15, and the output end of the telescopic rod 13 is connected to the back surface of the photovoltaic panel 4. The telescopic rod 13 is configured to extend and contract along the height direction of the photovoltaic panel 4. Specifically, the driving member 7 drives the sliding rod 15 to move along a direction perpendicular to the length direction of the photovoltaic panel 4 and perpendicular to the height direction of the photovoltaic panel 4, so that the telescopic rod 13 moves along a direction perpendicular to the length direction of the photovoltaic panel 4 and perpendicular to the height direction of the photovoltaic panel 4. The telescopic rod 13 drives the photovoltaic panel 4 to extend and contract along its height direction. By controlling the two directions of the driving member 7 and the telescopic rod 13, the angular direction of the photovoltaic panel 4 is changed, so as to achieve the purpose of adjusting the tilt angle of the photovoltaic panel 4.

[0047] Further, the free end of the telescopic rod 13 is connected to the first end of the photovoltaic panel 4. The second end of the photovoltaic panel 4 is fixed on the ground or the roof 1, and the first end and the second end of the photovoltaic panel 4 are arranged at intervals along the width direction of the photovoltaic panel 4. When the length of the telescopic rod 13 remains unchanged, by driving the sliding rod 15 to move towards the second end of the photovoltaic panel 4 by the driving member 7, the included angle between the photovoltaic panel 4 and the ground can be increased; by driving the sliding rod 15 to move away from the second end of the photovoltaic panel 4 by the driving member 7, the included angle between the photovoltaic panel 4 and the ground can be decreased. When the position of the sliding rod 15 remains unchanged, if the telescopic rod 13 extends, the included angle between the photovoltaic panel 4 and the ground can be increased; if the telescopic rod 13 shortens, the included angle between the photovoltaic panel 4 and the ground can be decreased. When the sliding rod 15 moves towards the second end of the photovoltaic panel 4 and the telescopic rod 13 extends, the included angle between the photovoltaic panel 4 and the ground can be increased; when the sliding rod 15 moves away from the second end of the photovoltaic panel 4 and the telescopic rod 13 shortens, the included angle between the photovoltaic panel 4 and the ground can be decreased. Specifically, the angle of the photovoltaic panel 4 can be controlled or adjusted according to the longitude and latitude of the installation location, seasonal changes, or the position of the sun at different times of the day, or the tilt angle of the photovoltaic panel 4 can be adjusted according to the irradiation angles of several sunlights, so that the photovoltaic panel 4 receives sunlight at the best angle, thereby improving the utilization rate of sunlight. During the adjustment process of the tilt angle of the photovoltaic panel 4, the tilt angle of the photovoltaic panel 4 can be detected by an angle measuring tool, such as a theodolite or an angle sensor, to ensure that the photovoltaic panel 4 can be adjusted to a predetermined angle.

[0048] Such as Figure 3As shown, in some embodiments of the present disclosure, the driving member 7 includes: a motor 18 and a driving rod 17. The motor 18 is drivingly connected to the driving rod 17, and the driving rod 17 is connected to the sliding rod 15. The motor 18 controls the movement of the driving rod 17, and the driving rod 17 drives the sliding rod 15 to move. Among them, the driving rod 17 can be a rack, a gear meshes with the rack, the motor 18 drives the gear to rotate, and the gear drives the rack to move, thereby controlling the movement of the sliding rod 15.

[0049] In some embodiments of the present disclosure, the sliding rod 15 extends along the length direction of the photovoltaic panel 4, and the length of the sliding rod 15 is the same as or equivalent to the length of the photovoltaic panel 4, so as to ensure that a plurality of telescopic rods 13 can be arranged on the sliding rod 15.

[0050] In some embodiments of the present disclosure, a plurality of telescopic rods 13 are arranged at intervals and evenly along the length direction of the sliding rod 15, so that the sliding rod 15 is uniformly stressed. At the same time, the photovoltaic panel 4 is uniformly stressed, and the service life of the sliding rod 15 and the photovoltaic panel 4 is improved.

[0051] In some embodiments of the present disclosure, the photovoltaic panel 4 includes a plurality of photovoltaic plate segments, and the number of telescopic rods 13 is twice the number of photovoltaic plate segments. Each photovoltaic plate segment is provided with two telescopic rods 13, and the two telescopic rods 13 are arranged at intervals on the back of the corresponding photovoltaic plate segment, so as to avoid concentrated stress on the photovoltaic plate segment and improve the service life of the photovoltaic plate segment.

[0052] In some embodiments of the present disclosure, the heat absorption assembly further includes: a pump 6, and the pump 6 communicates with the inlet of the cold water tank 2 and the heat absorption pipe 16. The cold water in the cold water tank 2 enters the pump 6 through the cold water pipe 8. According to the U-shaped tube away, when the cold water in the pump 6 reaches a certain height, the pump 6 starts to operate. The pump 6 transports the cold water inside it through the cold water pipe 8 to the heat absorption pipe 16. The cold water absorbs the heat of the photovoltaic panel 4 through the heat absorption pipe 16 and then becomes hot water. The hot water enters the hot water pipe 10 through the connecting pipe 11, and then enters the hot water tank 3 through the hot water pipe 10 and is temporarily stored in the hot water tank 3. The hot water tank 3 communicates with an external hot water demand system through the hot water outlet 9 to transport the hot water to users in need, thereby improving the waste heat utilization rate of the photovoltaic module.

[0053] As Figure 4 shown, the heat absorption pipe 16 is arranged in an S shape on the back of the photovoltaic panel 4 to increase the arrangement length of the heat absorption pipe 16 on the back of the photovoltaic panel 4, thereby increasing the heat absorption area of the heat absorption pipe 16, and further improving the waste heat utilization rate of the photovoltaic panel 4. The heat absorption pipe 16 is fixed to the back of the photovoltaic panel 4 through a water pipe fixer 19.

[0054] In some embodiments of the present disclosure, the cleaning assembly includes: a pumping water storage tank 5, a water delivery pipe 14, and an impact type water mist device 12. The water delivery pipe 14 is communicated with the water outlet of the pumping water storage tank 5. The impact type water mist device 12 is arranged on the top of the photovoltaic panel 4, and the water delivery pipe 14 is communicated with the water inlet of the impact type water mist device 12. The pumping water storage tank 5 transports the water in the pumping water storage tank 5 to the impact type water mist device 12 through the water delivery pipe 14, and sprays the water into a mist through the impact type water mist device 12. The misty water falls on the surface of the photovoltaic panel 4 and flows from the top of the photovoltaic panel 4 to the bottom of the photovoltaic panel 4 to carry away the dust or dirt on the surface of the photovoltaic panel 4. Specifically, the pumping water storage tank 5 includes a pumping controller, a pump 6, and a water tank. The controller starts the pump 6 to transport the water in the water tank to the water delivery pipe 14.

[0055] As Figure 5 shown, in some embodiments of the present disclosure, the impact type water mist device 12 includes: a baffle 21 and a nozzle 20. The baffle 21 is arranged above the photovoltaic panel 4. The water inlet of the nozzle 20 is communicated with the water delivery pipe 14, and the water outlet of the nozzle 20 is perpendicular to the baffle 21. The water delivery pipe 14 transports the water in the pumping water storage tank 5 to the nozzle 20, and the water outlet of the nozzle 20 sprays the water perpendicular to the baffle 21 to make the water into a mist. The water mist forms water droplets on the photovoltaic panel 4 and flows from the top of the photovoltaic panel 4 to the bottom of the photovoltaic panel 4 to drive the dust on the photovoltaic panel 4.

[0056] A second aspect of the present disclosure proposes a control method for a photovoltaic device, which is used to control the photovoltaic device according to any one of the above embodiments. The method includes:

[0057] According to the temperature of the photovoltaic panel, controlling the cold water in the cold water tank to enter the heat absorption pipe and then flow into the hot water tank;

[0058] According to the surface cleanliness of the photovoltaic panel, controlling the cleaning assembly to clean the photovoltaic module.

[0059] Specifically, the photovoltaic device may include a controller, a pumping controller, a cold water controller, an angle controller, a temperature detector, a camera, etc. The controller is electrically connected to the pumping controller, the cold water controller, the angle controller, the temperature detector, and the camera respectively. When the temperature of the photovoltaic panel 4 detected by the temperature detector exceeds the temperature threshold, the controller instructs the cold water controller to control the pump 6 to deliver cold water to the hot water pipe 10. When the surface cleanliness of the photovoltaic panel 4 obtained by the camera exceeds the cleanliness threshold, the controller instructs the pumping controller to deliver the water in the pumping water storage tank 5 to the nozzle to clean the photovoltaic panel 4; or when the time interval exceeds the time threshold, the controller instructs the pumping controller to deliver the water in the pumping water storage tank 5 to the nozzle to clean the photovoltaic panel 4. The controller instructs the angle controller to control the tilt angle of the photovoltaic panel 4 according to different time periods within a day. Herein, the angle controller is electrically connected to the motor 18 and the telescopic rod 13; the controller instructs the angle controller to control the tilt angle of the photovoltaic panel 4 according to the longitude and latitude of the installation location of the photovoltaic device; the controller instructs the angle controller to control the tilt angle of the photovoltaic panel 4 according to different seasons.

[0060] According to the temperature of the photovoltaic panel 4, control the cold water in the cold water tank 2 to enter the heat absorption pipe 16. When the cold water flows through the heat absorption pipe 16, the cold water absorbs the heat of the photovoltaic panel 4 through the heat absorption pipe 16 and becomes hot water, and then flows into the hot water tank 3 through the heat absorption pipe 16 for storage or temporary storage. The hot water tank 3 can be connected to an external hot water supply system to provide domestic hot water or other application scenarios that require hot water for users, so as to improve the waste heat utilization rate of the photovoltaic module, reduce energy waste, avoid the temperature of the photovoltaic panel 4 of the photovoltaic module being too high, and ensure the power generation efficiency and service life of the photovoltaic module; according to the surface cleanliness of the photovoltaic panel 4 or when the time interval exceeds the time threshold, control the cleaning component to clean the photovoltaic panel 4, reduce the deposited dirt on the surface of the photovoltaic panel 4, improve the sunlight absorption efficiency of the photovoltaic panel 4, thereby improving the power generation efficiency of the photovoltaic module and the utilization rate of resources.

[0061] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A photovoltaic device, characterized in that: The photovoltaic device comprises: A photovoltaic assembly, wherein the photovoltaic assembly comprises a photovoltaic panel; A heat absorption component, the heat absorption component comprises: a cold water tank, a heat absorption pipe and a hot water tank, the cold water tank is connected to the water inlet of the heat absorption pipe, the hot water tank is connected to the water outlet of the heat absorption pipe, and the heat absorption pipe is closely attached to the back of the photovoltaic panel; A cleaning component is arranged on the top of the photovoltaic panel and is used for cleaning the photovoltaic panel.

2. The photovoltaic device according to claim 1, characterized in that: The photovoltaic module further comprises: Driving parts; A sliding rod, wherein the driving member is drivingly connected to the sliding rod to drive the sliding rod to move, wherein the moving direction of the sliding rod is perpendicular to the length direction of the photovoltaic panel, and the moving direction of the sliding rod is perpendicular to the height direction of the photovoltaic panel; A telescopic rod is arranged on the top of the sliding rod, an output end of the telescopic rod is connected to the back side of the photovoltaic panel, and the telescopic rod is configured to be telescopic along the height direction of the photovoltaic panel.

3. The photovoltaic device according to claim 2, characterized in that: The sliding rod extends along the length direction of the photovoltaic panel.

4. The photovoltaic device according to claim 3, characterized in that: The plurality of telescopic rods are spaced and evenly arranged along the length direction of the sliding rod.

5. The photovoltaic device according to claim 4, characterized in that: The photovoltaic panel includes a plurality of photovoltaic panels, the number of the telescopic rods is twice the number of the photovoltaic panels, and each photovoltaic panel is provided with two corresponding telescopic rods.

6. The photovoltaic device according to claim 2, characterized in that: The driving member comprises: Motor; A driving rod, the motor is drivingly connected to the driving rod, and the driving rod is connected to the sliding rod.

7. The photovoltaic device according to claim 1, characterized in that: The heat absorption component also includes: A pumper is connected between the cold water tank and the inlet of the heat absorption pipe.

8. The photovoltaic device according to claim 4, characterized in that: The cleaning component comprises: Pumping water storage tanks; A water delivery pipe, the water delivery pipe being in communication with a water outlet of the pumping water storage tank; An impact-type water mist device is arranged on the top of the photovoltaic panel, and the water supply pipe is connected to the water inlet of the impact-type water mist device.

9. The photovoltaic device according to claim 8, characterized in that: The impact type water mist device comprises: A baffle, the baffle being arranged above the photovoltaic panel; A nozzle, a water inlet of the nozzle is connected to the water supply pipe, and a water outlet of the nozzle is perpendicular to the baffle.

10. A control method for a photovoltaic device, used to control the photovoltaic device according to any one of claims 1 to 9, characterized in that: The method comprises: According to the temperature of the photovoltaic panel, the cold water in the cold water tank is controlled to enter the heat absorption pipe and then flow into the hot water tank; According to the surface cleanliness of the photovoltaic panels, the cleaning components are controlled to clean the photovoltaic components.

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