Balcony photovoltaic module composite cleaning device and cleaning method thereof

Abstract

The invention relates to the technical field of balcony photovoltaic modules, and discloses a balcony photovoltaic module composite cleaning device and a cleaning method thereof.The balcony photovoltaic module composite cleaning device comprises a supporting assembly provided with a photovoltaic panel; the cleaning assembly is connected to the supporting assembly and used for cleaning the photovoltaic panel; and the cleaning liquid conveying assembly comprises a photovoltaic cleaning agent conveying unit and a water conveying unit which are connected to the cleaning assembly. According to the composite cleaning device for the balcony photovoltaic module and the cleaning method of the composite cleaning device, the cleaning liquid conveying assembly is switched through the communication state with the cleaning assembly, a photovoltaic cleaning agent and water are matched with the cleaning assembly to clean a photovoltaic panel step by step, and the residual photovoltaic cleaning agent on the photovoltaic panel is removed; therefore, dust and stubborn stains on the photovoltaic panel can be completely removed, and the light transmittance can be prevented from being influenced by the residues of the photovoltaic cleaning agent.

Description

Technical Field

[0001] This invention relates to the field of balcony photovoltaic module technology, and more specifically, to a composite cleaning device and cleaning method for balcony photovoltaic modules. Background Technology

[0002] Balcony photovoltaic (PV) modules are small-scale photovoltaic power generation systems installed on balconies. They are suitable for residential, apartment, and commercial / industrial buildings, providing users with clean energy, reducing electricity bills, and decreasing carbon emissions. After a period of use, dust tends to accumulate on the top surface of the PV panels, requiring regular cleaning to ensure good light transmittance and thus guarantee the power generation performance of the PV modules.

[0003] Chinese Patent No. CN220457363U discloses a solar photovoltaic panel energy storage device convenient for use on balconies, including a base plate. A rotating disk is rotatably connected to the top of the base plate via a damping shaft. An angle adjustment mechanism is installed on the rotating disk. A first positioning seat is installed on the movable end of the angle adjustment mechanism. A first movable seat is rotatably connected to the top of the first positioning seat via a first rotating shaft. A fixed plate is installed on one side of the first movable seat. A solar photovoltaic panel is installed on one side of the fixed plate. A placement frame is installed on one side of the rotating disk. A dust removal mechanism is installed on the placement frame and the fixed plate. The dust removal mechanism includes a water supply component and a cleaning component. The cleaning component includes a lead screw. A movable groove is opened inside the fixed plate.

[0004] The aforementioned existing technical solution removes dust from the surface of the photovoltaic panel by controlling a water-soaked sponge to wipe the surface of the photovoltaic panel. However, this method has limited cleaning effect on some stubborn stains (such as bird droppings, oil stains, etc.), resulting in poor cleaning effect on the photovoltaic panel. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a composite cleaning device and method for balcony photovoltaic modules, which first uses a photovoltaic cleaning agent to wet a sponge to wipe the photovoltaic panel, and then uses a cleaning water to wet the sponge to wipe the photovoltaic panel again.

[0006] To achieve the above objectives, the technical solution of the present invention is to provide a composite cleaning device for balcony photovoltaic modules, comprising: Support components, equipped with photovoltaic panels; A cleaning component, connected to the support component, is used to clean the photovoltaic panel; The cleaning fluid delivery assembly includes a photovoltaic cleaning agent delivery unit and a water delivery unit connected to the cleaning assembly. The cleaning fluid delivery assembly has three states: In the first state, only the photovoltaic cleaning agent delivery unit is connected to the cleaning component; In the second state, only the water delivery unit is connected to the cleaning component; In the third state, both the photovoltaic cleaning agent delivery unit and the water delivery unit are not connected to the cleaning component.

[0007] By using the composite cleaning device for balcony photovoltaic modules described in this invention, the cleaning liquid delivery component switches between connected states with the cleaning component. The photovoltaic cleaning agent and water work together with the cleaning component to clean the photovoltaic panel step by step, and remove the residual photovoltaic cleaning agent from the photovoltaic panel. This ensures that all dust and stubborn stains on the photovoltaic panel can be removed, while preventing the residue of photovoltaic cleaning agent from affecting the light transmittance.

[0008] Preferably, the cleaning fluid delivery assembly further includes a three-position three-way valve, which has a first inlet, a second inlet, and an outlet. The photovoltaic cleaning agent delivery unit includes a first storage tank, which is connected to the first inlet via a first connecting pipe. The water delivery unit includes a second storage tank, which is connected to the second inlet via a second connecting pipe. The outlet is connected to the cleaning assembly via a delivery pipe. This design simplifies the cleaning fluid delivery assembly, reduces production costs, and facilitates installation.

[0009] Preferably, the three-position three-way valve includes a valve seat, a valve core, and a valve stem. The valve core is disposed within the valve seat and has an L-shaped channel. The valve stem is drivenly connected to the valve core. This design allows for switching of the cleaning fluid delivery assembly's state by rotating the valve stem to adjust the position of the valve core.

[0010] Preferably, the cleaning fluid delivery assembly further includes a drive structure mounted on the valve seat. The drive structure includes a protective box and a servo motor. The protective box is fixedly mounted on the valve seat, and the servo motor is fixedly mounted inside the protective box. The output end of the servo motor is drivenly connected to the valve stem. This design facilitates automatic adjustment of the cleaning fluid delivery assembly's state, making it more convenient and intelligent.

[0011] Preferably, a flow sensor and a water pump are sequentially installed along the delivery direction of the cleaning fluid in the infusion tube. This design allows the flow sensor to monitor the amount of cleaning fluid pumped by the water pump in real time and control the pump's operation to ensure the appropriate amount of cleaning fluid is pumped.

[0012] Preferably, the support structure includes a support frame and a fixing frame. The fixing frame is fixedly installed on the support frame, and the photovoltaic panel is fixedly installed inside the fixing frame. The fixing frame is inclined downwards along the direction away from the cleaning fluid delivery assembly. The fixing frame has a guide surface flush with the top surface of the photovoltaic panel, and a collection tank is provided below the end of the fixing frame away from the cleaning fluid delivery assembly. This design facilitates the flow of dust, dirt, and cleaning fluid along the surface of the photovoltaic panel and the guide surface into the collection tank for centralized treatment.

[0013] Preferably, the cleaning assembly includes a cleaning unit and two sets of drive units. Each drive unit includes a screw, a drive component, and a slider. The screw is rotatably mounted on the fixed frame, the drive component is fixedly mounted on the fixed frame and driven by the screw, and the slider is threadedly driven by the screw. Both ends of the cleaning unit are connected to the two sliders respectively. This design, by setting two sets of drive units, makes the movement of the cleaning unit more stable, which is beneficial to improving the cleaning effect.

[0014] Preferably, the cleaning unit includes a mounting rod and a sponge. The sponge is detachably connected to the mounting rod via a connector. A first flow channel is provided through the mounting rod, and a second flow channel communicating with the first flow channel is provided through the connector. The second flow channel has multiple outlets, which are linearly arrayed along the length of the sponge. The infusion tube communicates with the first flow channel. This design facilitates regular sponge replacement, ensuring the cleaning effect of the cleaning components.

[0015] Preferably, the slider is provided with a guide groove through it, the length direction of the guide groove is perpendicular to the surface of the photovoltaic panel, the mounting rod is slidably connected to the guide groove, a return spring is fixedly connected to the top inner wall of the guide groove, and the other end of the return spring is fixedly connected to the mounting rod. Guide plates are fixedly connected to both sides of the fixed frame by connecting rods. The guide plates include a first guide plate, a second guide plate and a third guide plate connected in sequence. The second guide plate is parallel to the surface of the photovoltaic panel. The first guide plate is inclined upward in a direction away from the second guide plate. The third guide plate is inclined downward in a direction away from the second guide plate. When the sponge cleans the photovoltaic panel, the top surface of the mounting rod is in contact with the bottom surface of the second guide plate, and the sponge is compressed. This design ensures that the sponge is compressed while cleaning the photovoltaic panel, and that the cleaning fluid and impurities inside the sponge are squeezed out after each cleaning cycle, greatly improving the cleaning effect of the cleaning components.

[0016] Preferably, an air knife is installed on the fixing frame, with the air knife positioned at the end of the fixing frame near the cleaning fluid delivery assembly. This design allows the air knife to blow away dust from the photovoltaic panel surface, reducing the cleaning pressure on the cleaning assembly and extending the lifespan of the sponge.

[0017] A cleaning method for a balcony photovoltaic module composite cleaning device includes the following steps: S1. The cleaning fluid delivery component delivers a preset amount of photovoltaic cleaning agent into the cleaning component; S2. The cleaning component, which is soaked in photovoltaic cleaning agent, completes one cleaning of the photovoltaic panel; S3, Repeat S1 and S2 at least twice; S4. The cleaning fluid delivery assembly delivers a preset amount of water to the cleaning assembly; S5. The cleaning component, which is immersed in water, completes a cleaning of the photovoltaic panel. S6. Repeat S4 and S5 at least three times. This design ensures that the photovoltaic panels are thoroughly cleaned.

[0018] The beneficial effects of this invention are as follows: By using the composite cleaning device and method for balcony photovoltaic modules described in this invention, the cleaning liquid delivery component switches between connected states with the cleaning component, and the photovoltaic cleaning agent and water work together with the cleaning component to clean the photovoltaic panel step by step, removing any residual photovoltaic cleaning agent from the photovoltaic panel. This ensures that all dust and stubborn stains on the photovoltaic panel are removed, while also preventing the residue of the photovoltaic cleaning agent from affecting the light transmittance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the balcony photovoltaic module composite cleaning device; Figure 2 This is a front view schematic diagram of a balcony photovoltaic module composite cleaning device; Figure 3 This is a three-dimensional structural diagram of the cleaning fluid delivery component; Figure 4 This is a three-dimensional structural diagram of a three-position three-way valve and its drive structure. Figure 5 This is a side sectional view of the three-position three-way valve and its drive structure. Figure 6 This is the first top-view sectional view of a three-position three-way valve (with the valve core in the first position). Figure 7 This is a second top-view sectional view of a three-position three-way valve (with the valve core in the second position). Figure 8 This is a third top sectional view of a three-position three-way valve (the valve core is in the third position). Figure 9 It is a three-dimensional structural diagram of the supporting components and drive unit; Figure 10 This is a schematic diagram of the first three-dimensional structure of the cleaning unit; Figure 11 This is a schematic diagram of the second three-dimensional structure of the cleaning unit; Figure 12 This is a cross-sectional view of the cleaning unit; Figure 13 This is a schematic diagram of the first three-dimensional structure of the guide plate; Figure 14 This is a schematic diagram of the second three-dimensional structure of the guide plate; Figure 15 This is a schematic diagram of the process of the end of the mounting rod cooperating with the guide plate.

[0020] In the diagram: 100, Support assembly; 110, Support frame; 120, Fixing frame; 121, Guide surface; 130, Connecting rod; 140, Guide plate; 141, First guide plate; 1411, First lower extrusion surface; 1412, First upper extrusion surface; 1413, Upper end face; 142, Second guide plate; 1421, Second lower extrusion surface; 1422, Second upper extrusion surface; 143, Third guide plate; 1431, Third lower extrusion surface; 1432, Third upper extrusion surface; 1433, Lower end face; 200. Photovoltaic panels; 300. Cleaning component; 310. Cleaning unit; 311. Mounting rod; 3111. Thin rod segment; 3112. First guide surface; 3113. Second guide surface; 3114. Upper pressure surface; 3115. Lower pressure surface; 3116. First flow channel; 312. Connector; 3121. Second flow channel; 313. Sponge; 320. Drive unit; 321. Screw; 322. Drive component; 323. Slider; 3231. Guide groove; 324. Return spring; 400. Cleaning fluid delivery assembly; 410. Three-position three-way valve; 411. Valve seat; 4111. First inlet; 4112. Second inlet; 4113. Outlet; 412. Valve core; 4121. Channel; 413. Valve stem; 420. First storage tank; 421. First connecting pipe; 430. Second storage tank; 431. Second connecting pipe; 440. Delivery pipe; 441. Flow sensor; 442. Water pump; 450. Protective box; 460. Servo motor; 500. Collection tank; 600, Wind Knife. Detailed Implementation

[0021] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0022] To better understand this invention, the following is combined with... Figures 1-15 This invention provides a detailed description of a composite cleaning device for balcony photovoltaic modules and its cleaning method.

[0023] Example 1: like Figure 1 As shown, a balcony photovoltaic module composite cleaning device includes: Support component 100, with photovoltaic panels 200 installed; Cleaning component 300, connected to support component 100, is used to clean photovoltaic panel 200; The cleaning fluid delivery assembly 400 includes a photovoltaic cleaning agent delivery unit and a water delivery unit connected to the cleaning assembly 300. The cleaning fluid delivery assembly 400 has three states: In the first state, only the photovoltaic cleaning agent delivery unit is connected to the cleaning component 300; In the second state, only the water delivery unit is connected to the cleaning component 300; In the third state, neither the photovoltaic cleaning agent delivery unit nor the water delivery unit is connected to the cleaning component 300.

[0024] It should be noted that the cleaning component 300 can be a wiping structure that uses cleaning fluid to wipe the surface of the photovoltaic panel 200 to remove dust and dirt from the surface of the photovoltaic panel 200, or it can be a liquid spray structure that uses high-pressure spray cleaning fluid to remove dust and dirt from the surface of the photovoltaic panel 200. The photovoltaic cleaning agent delivery unit is used to deliver photovoltaic cleaning agent to the cleaning component 300, and the water delivery unit is used to deliver cleaning water to the cleaning component 300. When the photovoltaic panel 200 is not cleaned, the cleaning liquid delivery component 400 is in the third state, and neither the photovoltaic cleaning agent delivery unit nor the water delivery unit is connected to the cleaning component 300. Therefore, neither the photovoltaic cleaning agent nor the water can flow into the cleaning component 300. There are two solutions for cleaning photovoltaic panels 200: Option 1: During the cleaning process, the cleaning fluid delivery component 400 sequentially switches from the third state to the first state, the second state, and the third state. First, the cleaning fluid delivery component 400 switches from the third state to the first state. The photovoltaic cleaning agent delivery unit is connected to the cleaning component 300, while the water delivery unit is not connected to the cleaning component 300. The photovoltaic cleaning agent flows into the cleaning component 300 to clean the photovoltaic panel 200, so as to remove stubborn stains on the surface of the photovoltaic panel 200. Subsequently, the cleaning fluid delivery component 400 switches from the first state to the second state. The water delivery unit is connected to the cleaning component 300, while the photovoltaic cleaning agent delivery unit is not connected to the cleaning component 300. Water flows into the cleaning component 300 to clean the photovoltaic panel 200 and remove residual photovoltaic cleaning agent from the photovoltaic panel 200. This prevents the photovoltaic cleaning agent residue from forming a thin film and reducing light transmittance. It also prevents the residue from drying and adhering to the photovoltaic panel 200, thus avoiding incomplete cleaning and reduced light transmittance. Finally, the cleaning fluid delivery assembly 400 switches from the second state to the third state, and the cleaning is complete; Option 2: During the cleaning process, the cleaning fluid delivery component 400 sequentially switches from the third state to the second state, the first state, the second state, and the third state. Before using photovoltaic cleaning agent in conjunction with cleaning component 300 to clean photovoltaic panel 200, cleaning liquid delivery component 400 delivers a preset amount of water to cleaning component 300. The water-soaked cleaning component 300 completes one cleaning of photovoltaic panel 200, thereby removing most of the dust from the surface of photovoltaic panel 200. Compared to Option 1, Option 2 first switches the cleaning fluid delivery component 400 to the second state before completing the cleaning process of Option 1. It first uses water in conjunction with the cleaning component 300 to perform preliminary cleaning of the photovoltaic panel 200, which helps to reduce the amount of photovoltaic cleaning agent used and lower cleaning costs. Users can choose different options according to their specific needs. For example, if the photovoltaic panel 200 usually has a lot of stubborn stains attached within a cleaning cycle, Option 1 should be preferred. If there are fewer stubborn stains attached, Option 2 should be preferred.

[0025] By using the composite cleaning device for balcony photovoltaic modules of the present invention, the cleaning liquid delivery component 400 switches between connected states with the cleaning component 300, and the photovoltaic cleaning agent and water work together with the cleaning component 300 to clean the photovoltaic panel 200 step by step, and remove the residual photovoltaic cleaning agent on the photovoltaic panel 200. This ensures that all dust and stubborn stains on the photovoltaic panel 200 can be removed, and also prevents the residue of photovoltaic cleaning agent from affecting the light transmittance.

[0026] Example 2: As an optimization of Example 1, such as Figures 1-8As shown, the cleaning fluid delivery assembly 400 also includes a three-position three-way valve 410, which is provided with a first inlet 4111, a second inlet 4112, and an outlet 4113. The photovoltaic cleaning agent delivery unit includes a first storage tank 420, which is connected to the first inlet 4111 via a first connecting pipe 421. The water delivery unit includes a second storage tank 430, which is connected to the second inlet 4112 via a second connecting pipe 431. The outlet 4113 is connected to the cleaning assembly 300 via a delivery pipe 440.

[0027] It should be noted that the first storage tank 420 is used to store photovoltaic cleaning agent, the second storage tank 430 is used to store cleaning water, and the valve core 412 of the three-position three-way valve 410 can be adjusted to three positions, corresponding to the three states of the cleaning fluid delivery assembly 400: In the first position, the first liquid inlet 4111 is connected to the liquid outlet 4113, and the second liquid inlet 4112 is closed, which corresponds to the first state of the cleaning fluid delivery assembly 400. In the second position, the second liquid inlet 4112 is connected to the liquid outlet 4113, and the first liquid inlet 4111 is closed, which corresponds to the second state of the cleaning fluid delivery assembly 400. The third position is when the outlet 4113 is closed, corresponding to the third state of the cleaning fluid delivery assembly 400.

[0028] By setting a three-position three-way valve 410, the flow channel can be precisely controlled to achieve the state switching of the cleaning fluid delivery component 400. It only requires a liquid pump structure and a single delivery pipe 440, which significantly simplifies the structure, reduces costs, and makes it easy to install.

[0029] A hose reel assembly that works with the cleaning component 300 can be set up to wind and unwind the infusion tube 440, preventing the infusion tube 440 from getting tangled or falling onto the photovoltaic panel 200. The hose reel assembly includes a bracket, a column-shaped rotating frame, and a bidirectional motor. The rotating frame is rotatably mounted on the bracket, and the infusion tube 440 is wound around the rotating frame. The bidirectional motor is mounted on the bracket and driven by the rotating frame. The bidirectional motor drives the rotating frame to rotate, thereby realizing the winding and unwinding of the infusion tube 440.

[0030] Example 3: As an optimization of Example 2, such as Figures 4-8 As shown, the three-position three-way valve 410 includes a valve seat 411, a valve core 412, and a valve stem 413. The valve core 412 is disposed inside the valve seat 411 and has an L-shaped channel 4121. The valve stem 413 is drivenly connected to the valve core 412.

[0031] It should be noted that the valve core 412 has a spherical structure. When the valve core 412 is in the first position, the two ends of the channel 4121 are connected to the first liquid inlet 4111 and the liquid outlet 4113, respectively. When the valve core 412 is in the second position, the two ends of the channel 4121 are connected to the second liquid inlet 4112 and the liquid outlet 4113, respectively. When the valve core 412 is in the third position, the two ends of the channel 4121 are not connected to the liquid outlet 4113. Thus, by rotating the valve rod 413 to adjust the position of the valve core 412, the state switching of the cleaning fluid delivery assembly 400 can be completed. Both the first liquid inlet 4111 and the second liquid inlet 4112 are equipped with sealing rings to ensure sealing. The sealing rings are located between the valve seat 411 and the valve core 412.

[0032] Example 4: As an optimization of Example 3, such as Figure 4 and Figure 5 As shown, the cleaning fluid delivery assembly 400 also includes a drive structure mounted on the valve seat 411. The drive structure includes a protective box 450 and a servo motor 460. The protective box 450 is fixedly mounted on the valve seat 411, and the servo motor 460 is fixedly mounted inside the protective box 450. The output end of the servo motor 460 is drivenly connected to the valve stem 413.

[0033] It should be noted that the servo motor 460 can precisely control the rotation angle of the valve stem 413, thereby controlling the position of the valve core 412 and realizing the automatic adjustment of the state of the cleaning fluid delivery component 400 without the need for manual adjustment, which is more convenient and intelligent. The protective box 450 can protect the servo motor 460.

[0034] Example 5: As an optimization of Example 4, such as Figure 3 As shown, a flow sensor 441 and a water pump 442 are sequentially installed on the infusion pipe 440 along the direction of the cleaning fluid delivery.

[0035] It should be noted that the water pump 442 can pump the cleaning fluid (including photovoltaic cleaning agent and water) into the cleaning component 300. Both the water pump 442 and the cleaning component 300 are electrically connected to the flow sensor 441. The flow sensor 441 can monitor the amount of cleaning fluid pumped in real time. When the flow sensor 441 detects that the amount of cleaning fluid pumped in a single operation reaches a first preset value, the flow sensor 441 transmits electrical signals to the water pump 442 and the cleaning component 300 respectively, causing the water pump 442 to stop pumping the cleaning fluid for a preset time. During this time period, the cleaning component 300 completes one cleaning of the photovoltaic panel 200. When the flow sensor 441 detects that the total amount of cleaning fluid pumped reaches a second preset value, the cleaning component 300 has completed multiple cleanings of the photovoltaic panel 200, and the photovoltaic panel 200 needs to be cleaned one last time. The flow sensor 441 transmits electrical signals to the water pump 442 and the cleaning component 300, causing the water pump 442 to stop working, and the cleaning component 300 stops working after completing the last cleaning.

[0036] Example 6: As an optimization of Example 5, such as Figure 1 , Figure 2 and Figure 9 As shown, the support structure includes a support frame 110 and a fixing frame 120. The fixing frame 120 is fixedly installed on the support frame 110, and the photovoltaic panel 200 is fixedly installed inside the fixing frame 120. The fixing frame 120 is inclined downward along the direction away from the cleaning fluid delivery assembly 400. The fixing frame 120 is provided with a guide surface 121 that is flush with the top surface of the photovoltaic panel 200. A collection tank 500 is provided below the end of the fixing frame 120 away from the cleaning fluid delivery assembly 400.

[0037] It should be noted that during the cleaning process of the cleaning component 300, when the cleaning component 300 is a wiping structure, since the guide surface 121 is flush with the surface of the photovoltaic panel 200, the cleaning component 300 will not interfere with the fixed frame 120 during the wiping process of the photovoltaic panel 200, and the dust, dirt and cleaning fluid can flow into the collection tank 500 along the surface of the photovoltaic panel 200 and the guide surface 121 for collection. When the cleaning component 300 is a liquid spray structure, the cleaning fluid can also flow into the collection tank 500 along the surface of the photovoltaic panel 200 and the guide surface 121 for collection, so as to facilitate centralized treatment.

[0038] Example 7: As an optimization of Example 6, such as Figure 1 , Figure 2 and Figure 9As shown, the cleaning assembly 300 includes a cleaning unit 310 and two sets of drive units 320. Each set of drive units 320 includes a screw 321, a drive member 322, and a slider 323. The screw 321 is rotatably mounted on the fixed frame 120, the drive member 322 is fixedly mounted on the fixed frame 120, and the drive member 322 is drivenly connected to the screw 321. The slider 323 is threadedly drivenly connected to the screw 321. The two ends of the cleaning unit 310 are respectively connected to the two sliders 323.

[0039] It should be noted that the two sets of drive units 320 are symmetrically arranged on both sides of the photovoltaic panel 200. The length direction of the screw 321 is parallel to the surface of the photovoltaic panel 200, and the screw 321 is inclined downward along the direction away from the cleaning liquid delivery component 400. The drive motor can be a DC motor. The two drive units 322 drive the two screws 321 to rotate synchronously in the forward direction, thereby driving the two sliders 323 to move along the length direction of the screws 321. The cleaning unit 310 moves synchronously with the two sliders 323 to clean the photovoltaic panel 200 from top to bottom. After cleaning is completed, the two drive units 322 drive the two screws 321 to rotate synchronously in the reverse direction, so that the cleaning component 300 is reset. By setting two sets of drive units 320, the movement of the cleaning unit 310 is more stable, which is conducive to improving the cleaning effect.

[0040] Example 8: As an optimization of Example 7, such as Figure 1 , Figure 10 , Figure 11 and Figure 12 As shown, the cleaning unit 310 includes a mounting rod 311 and a sponge 313. The sponge 313 is detachably connected to the mounting rod 311 via a connector 312. A first flow channel 3116 is provided through the mounting rod 311. A second flow channel 3121 communicating with the first flow channel 3116 is provided through the connector 312. The second flow channel 3121 is provided with multiple outlets, which are linearly arrayed along the length of the sponge 313. The infusion tube 440 is connected to the first flow channel 3116.

[0041] It should be noted that cleaning the photovoltaic panel 200 with the sponge 313 will not easily damage the photovoltaic panel 200. The sponge 313 is adhered to the connector 312. The connector 312 and the mounting rod 311 can be detachably connected by bolts, snap-fit, etc., so as to facilitate the periodic replacement of the sponge 313 and ensure the cleaning effect of the cleaning component 300. A sealing gasket can be set between the mounting rod 311 and the connector 312 to prevent the cleaning fluid from leaking. An opening can be set on the sealing gasket to ensure that the cleaning fluid can flow into the sponge 313. The second flow channel 3121, by setting multiple outlets linearly arrayed along the length of the sponge 313, can ensure that the cleaning fluid penetrates the sponge 313 evenly, thereby ensuring that the sponge 313 is evenly wetted and ensuring the cleaning effect of the sponge 313.

[0042] Example 9: As an optimization of Example 8, such as Figure 1 , Figure 2 , Figure 9 , Figure 10 , Figure 11 , Figure 13 , Figure 14 and Figure 15 As shown, a guide groove 3231 is provided through the slider 323. The length direction of the guide groove 3231 is perpendicular to the surface of the photovoltaic panel 200. The mounting rod 311 is slidably connected to the guide groove 3231. A reset spring 324 is fixedly connected to the top inner wall of the guide groove 3231. The other end of the reset spring 324 is fixedly connected to the mounting rod 311. Guide plates 140 are fixedly connected to both sides of the fixed frame 120 via connecting rods 130. The guide plate 140 includes a first guide plate 141, a second guide plate 142, and a third guide plate 143 connected in sequence. The second guide plate 142 is parallel to the surface of the photovoltaic panel 200. The first guide plate 141 is inclined upward in a direction away from the second guide plate 142, and the third guide plate 143 is inclined downward in a direction away from the second guide plate 142. When the sponge 313 wipes the photovoltaic panel 200, the top surface of the mounting rod 311 is in contact with the bottom surface of the second guide plate 142, and the sponge 313 is compressed.

[0043] It should be noted that two thin rod segments 3111 are respectively provided at both ends of the mounting rod 311. The two thin rod segments 3111 are slidably connected to the two guide grooves 3231 of the two sliders 323 respectively. Along the direction away from the second guide plate 142, the first guide plate 141 is inclined away from the fixed frame 120, and the third guide plate 143 is inclined towards the fixed frame 120. Both ends of the mounting rod 311 are provided with a first guide surface 3112, a second guide surface 3113, an upper pressure surface 3114, and a lower pressure surface 3115. The first guide surface 3112 and the second guide surface 3113 are both located on the side of the thin rod segment 3111 away from the center of the mounting rod 311. The first guide plate 141 includes a first lower extrusion surface 1411, a first upper extrusion surface 1412, and an upper end surface 1413. The second guide plate 142 includes a second lower extrusion surface 1421 and a second upper extrusion surface 1422. The third guide plate 143 includes a third lower extrusion surface 1431, a third upper extrusion surface 1432, and a lower end surface 1433. During the process of the drive unit 320 driving the cleaning unit 310 to complete one cleaning of the photovoltaic panel 200, initially, the mounting rod 311 is not in contact with the guide plate 140, the bottom surface of the sponge 313 is in contact with the guide surface 121 at the upper end of the fixed frame 120, the return spring 324 is at its natural length, the sponge 313 is not compressed, and the distance between the upper pressure surface 3114 and the photovoltaic panel 200, the distance between the second lower pressure surface 1421 and the photovoltaic panel 200, and the distance between the lower pressure surface 3115 and the photovoltaic panel 200 decrease in sequence. Before the sponge 313 comes into contact with the photovoltaic panel 200, as the cleaning unit 310 moves, the first lower extrusion surface 1411 extrudes the first guide surface 3112, causing the mounting rod 311 to move toward the photovoltaic panel 200, the reset spring 324 extends, and the sponge 313 is gradually compressed by the mounting rod 311 and the fixing frame 120. When the sponge 313 begins to contact the photovoltaic panel 200, the upper pressure surface 3114 and the second lower extrusion surface 1421 are in contact. Since the second guide plate 142 is parallel to the surface of the photovoltaic panel 200 and the second lower extrusion surface 1421 is parallel to the surface of the photovoltaic panel 200, before the sponge 313 separates from the photovoltaic panel 200, as the cleaning unit 310 moves, the distance between the mounting rod 311 and the photovoltaic panel 200 remains unchanged, the length of the return spring 324 remains unchanged, and the compression of the sponge 313 remains unchanged. The compressed sponge 313, which is soaked in cleaning fluid, wipes the photovoltaic panel 200 during the movement, resulting in a better cleaning effect. When the sponge 313 is completely detached from the photovoltaic panel 200 and the bottom surface of the sponge 313 is in contact with the guide surface 121 at the lower end of the fixing frame 120, as the cleaning unit 310 continues to move, the third lower pressing surface 1431 presses the first guide surface 3112, causing the mounting rod 311 to move closer to the photovoltaic panel 200 again. The reset spring 324 extends further, the sponge 313 is further compressed, and the cleaning fluid and dust stains in the sponge 313 are squeezed out and finally flow into the collection tank 500 along the guide surface 121 at the lower end of the fixing frame 120. This allows the sponge 313 to reabsorb clean cleaning fluid during the next top-to-bottom cleaning of the photovoltaic panel 200, thus ensuring the cleaning effect of the sponge 313. As the cleaning unit 310 continues to move, after the first guide surface 3112 separates from the third lower extrusion surface 1431, the upper pressure surface 3114 abuts against the lower end surface 1433. Before the upper pressure surface 3114 separates from the lower end surface 1433, the distance between the mounting rod 311 and the photovoltaic panel 200 remains unchanged, the length of the reset spring 324 remains unchanged, the compression of the sponge 313 remains unchanged, and the sponge 313 slides on the guide surface 121 at the lower end of the fixed frame 120. When the upper pressure surface 3114 separates from the lower end surface 1433 (the mounting rod 311 disengages from the third guide plate 143), under the restoring force of the reset spring 324, the reset spring 324 pulls the mounting rod 311 to move away from the photovoltaic panel 200, the sponge 313 returns to its initial uncompressed state, the reset spring 324 returns to its initial length, and then the drive unit 320 drives the cleaning unit 310 to reset, and the cleaning unit 310 moves towards the cleaning fluid delivery assembly 400; During initial reset, firstly, the mounting rod 311 slides on the third upper pressing surface 1432 of the third guide plate 143, the third upper pressing surface 1432 presses the second guide surface 3113, the sponge 313 moves away from the photovoltaic panel 200 along with the mounting rod 311, the reset spring 324 is compressed, and the sponge 313 disengages from the guide surface 121 at the lower end of the fixed frame 120. Subsequently, the mounting rod 311 slides on the second upper extrusion surface 1422 of the second guide plate 142, the lower pressure surface 3115 is in contact with the second upper extrusion surface 1422, the length of the return spring 324 remains unchanged, and the distance between the sponge 313 and the photovoltaic panel 200 remains unchanged. Afterwards, the mounting rod 311 slides on the first upper extrusion surface 1412 of the first guide plate 141, the first upper extrusion surface 1412 extrudes the second guide surface 3113, and the sponge 313 moves away from the photovoltaic panel 200 again with the mounting rod 311, and the return spring 324 is further compressed. Then, the mounting rod 311 slides on the upper end face 1413 of the first guide plate 141, the lower pressure surface 3115 is in contact with the upper end face 1413, the length of the return spring 324 remains unchanged, and the distance between the sponge 313 and the photovoltaic panel 200 remains unchanged. When the mounting rod 311 disengages from the first guide plate 141 (the lower pressure surface 3115 separates from the upper end surface 1413), under the restoring force of the reset spring 324, the reset spring 324 pushes the mounting rod 311 to move closer to the photovoltaic panel 200 until the bottom surface of the sponge 313 is in contact with the guide surface 121 at the upper end of the fixing frame 120. The reset spring 324 returns to its initial length, and the cleaning component 300 completes the reset. At this time, the cleaning fluid delivery component 400 pumps an appropriate amount of cleaning fluid into the sponge 313 again. The cleaning component 300 repeats the above operation to clean the photovoltaic panel 200 multiple times, removing all dust and stubborn stains from the surface of the photovoltaic panel 200.

[0044] Example 10: As an optimization of Example 9, such as Figure 1 As shown, an air knife 600 is installed on the fixed frame 120, and the air knife 600 is installed at one end of the fixed frame 120 near the cleaning fluid delivery assembly 400.

[0045] It should be noted that the air outlet of the air knife 600 is directed towards or parallel to the surface of the photovoltaic panel 200. Before the cleaning component 300 cleans, the air knife 600 can blow away some of the dust on the surface of the photovoltaic panel 200, reduce the cleaning pressure of the cleaning component 300, and extend the service life of the sponge 313. After the cleaning component 300 is cleaned, the air knife 600 can accelerate the drying of the surface of the photovoltaic panel 200 and prevent water droplets from affecting the refraction of light and thus the absorption of light energy by the photovoltaic panel 200.

[0046] Example 11: A cleaning method for a balcony photovoltaic module composite cleaning device includes the following steps: S1. The cleaning fluid delivery component 400 delivers a preset amount of photovoltaic cleaning agent to the cleaning component 300; S2. The cleaning component 300, which is soaked in photovoltaic cleaning agent, completes one cleaning of the photovoltaic panel 200; S3, Repeat S1 and S2 at least twice; S4. The cleaning fluid delivery assembly 400 delivers a preset amount of water to the cleaning assembly 300; S5. The water-soaked cleaning component 300 completes one cleaning of the photovoltaic panel 200; S6. Repeat S4 and S5 at least three times.

[0047] It should be noted that before S1, the air knife 600 is activated to blow away some of the dust on the surface of the photovoltaic panel 200; In S1, the servo motor 460 drives the valve stem 413 to rotate 90° clockwise, thereby driving the valve core 412 to rotate from the third position to the first position. The cleaning fluid delivery assembly 400 switches from the third state to the first state. Subsequently, the water pump 442 starts and pumps the photovoltaic cleaning agent in the first storage tank 420 into the sponge 313 through the first connecting pipe 421. The real-time monitoring and feedback of the flow sensor 441 ensures that a preset amount of photovoltaic cleaning agent is pumped into the sponge 313 in one go. Then, the water pump 442 is turned off. In S2, the drive unit 320 drives the cleaning unit 310 to complete a cleaning of the photovoltaic panel 200, and the sponge 313 soaked in photovoltaic cleaning agent completes a top-to-bottom wiping of the photovoltaic panel 200. In S3, by repeating S1 and S2 at least twice, it is ensured that the dust and stubborn stains on the photovoltaic panel 200 are no longer firmly attached to the surface of the photovoltaic panel 200 (some dust and stubborn stains are wiped away, and the other part of the dust and stubborn stains dissolve in the photovoltaic cleaning agent on the surface of the photovoltaic panel 200). In S4, the servo motor 460 drives the valve stem 413 to rotate 90° clockwise again, thereby driving the valve core 412 to rotate from the first position to the second position. The cleaning fluid delivery assembly 400 switches from the first state to the second state. Subsequently, the water pump 442 starts and pumps the cleaning water in the second storage tank 430 into the sponge 313 through the second connecting pipe 431. The real-time monitoring and feedback of the flow sensor 441 ensures that a preset amount of cleaning water is pumped into the sponge 313 at a time. Then, the water pump 442 is turned off. In S5, the drive unit 320 drives the cleaning unit 310 to complete a cleaning of the photovoltaic panel 200, and the sponge 313 soaked in cleaning water completes a top-to-bottom wiping of the photovoltaic panel 200. In S6, by repeating S4 and S5 at least three times, the photovoltaic cleaning agent, dust and stains on the surface of the photovoltaic panel 200 are wiped away, thereby cleaning the surface of the photovoltaic panel 200. After S6, the servo motor 460 drives the valve stem 413 to rotate 180° clockwise or counterclockwise, thereby driving the valve core 412 to rotate from the second position to the third position. The cleaning fluid delivery assembly 400 switches from the second state to the third state and starts the air knife 600 to dry the water remaining on the surface of the photovoltaic panel 200.

[0048] The embodiments of the invention have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. A composite cleaning device for balcony photovoltaic modules, characterized in that, include: Supporting component (100) with photovoltaic panel (200) installed; A cleaning component (300), connected to the support component (100), is used to clean the photovoltaic panel (200). The cleaning fluid delivery assembly (400) includes a photovoltaic cleaning agent delivery unit and a water delivery unit connected to the cleaning assembly (300), and the cleaning fluid delivery assembly (400) has three states: In the first state, only the photovoltaic cleaning agent delivery unit is connected to the cleaning component (300); In the second state, only the water delivery unit is connected to the cleaning component (300); In the third state, both the photovoltaic cleaning agent delivery unit and the water delivery unit are not connected to the cleaning component (300).

2. The composite cleaning device for balcony photovoltaic modules according to claim 1, characterized in that, The cleaning fluid delivery assembly (400) further includes a three-position three-way valve (410), which is provided with a first inlet (4111), a second inlet (4112), and an outlet (4113). The photovoltaic cleaning agent delivery unit includes a first storage tank (420), which is connected to the first inlet (4111) through a first connecting pipe (421). The water delivery unit includes a second storage tank (430), which is connected to the second inlet (4112) through a second connecting pipe (431). The outlet (4113) is connected to the cleaning assembly (300) through a delivery pipe (440).

3. The composite cleaning device for balcony photovoltaic modules according to claim 2, characterized in that, The three-position three-way valve (410) includes a valve seat (411), a valve core (412) and a valve stem (413). The valve core (412) is disposed in the valve seat (411) and has an L-shaped channel (4121). The valve stem (413) is driven to connect with the valve core (412).

4. A composite cleaning device for balcony photovoltaic modules according to claim 3, characterized in that, The cleaning fluid delivery assembly (400) also includes a drive structure installed on the valve seat (411). The drive structure includes a protective box (450) and a servo motor (460). The protective box (450) is fixedly installed on the valve seat (411), and the servo motor (460) is fixedly installed inside the protective box (450). The output end of the servo motor (460) is drivenly connected to the valve stem (413).

5. A composite cleaning device for balcony photovoltaic modules according to claim 2, characterized in that, The infusion tube (440) is equipped with a flow sensor (441) and a water pump (442) in sequence along the direction of the cleaning fluid delivery.

6. A composite cleaning device for balcony photovoltaic modules according to claim 2, characterized in that, The support structure includes a support frame (110) and a fixing frame (120). The fixing frame (120) is fixedly installed on the support frame (110). The photovoltaic panel (200) is fixedly installed inside the fixing frame (120). The fixing frame (120) is inclined downward along the direction away from the cleaning fluid delivery assembly (400). The fixing frame (120) is provided with a guide surface (121) that is flush with the top surface of the photovoltaic panel (200). A collection tank (500) is provided below the end of the fixing frame (120) away from the cleaning fluid delivery assembly (400).

7. A composite cleaning device for balcony photovoltaic modules according to claim 6, characterized in that, The cleaning assembly (300) includes a cleaning unit (310) and two sets of drive units (320). Each set of drive units (320) includes a screw (321), a drive member (322), and a slider (323). The screw (321) is rotatably mounted on the fixed frame (120). The drive member (322) is fixedly mounted on the fixed frame (120) and is drivenly connected to the screw (321). The slider (323) is threadedly driven to the screw (321). The two ends of the cleaning unit (310) are respectively connected to the two sliders (323).

8. A composite cleaning device for balcony photovoltaic modules according to claim 7, characterized in that, The cleaning unit (310) includes a mounting rod (311) and a sponge (313). The sponge (313) is detachably connected to the mounting rod (311) via a connector (312). A first flow channel (3116) is provided through the mounting rod (311). A second flow channel (3121) communicating with the first flow channel (3116) is provided through the connector (312). The second flow channel (3121) is provided with multiple outlets. The multiple outlets are linearly arrayed along the length of the sponge (313). The infusion tube (440) is connected to the first flow channel (3116).

9. A composite cleaning device for balcony photovoltaic modules according to claim 8, characterized in that, The slider (323) is provided with a guide groove (3231) through it. The length direction of the guide groove (3231) is perpendicular to the surface of the photovoltaic panel (200). The mounting rod (311) is slidably connected to the guide groove (3231). A reset spring (324) is fixedly connected to the top inner wall of the guide groove (3231). The other end of the reset spring (324) is fixedly connected to the mounting rod (311). Guide plates (140) are fixedly connected to both sides of the fixed frame (120) by connecting rods (130). The guide plates (140) include a first guide plate (141), a second guide plate (142), and a third guide plate (143) connected in sequence. The second guide plate (142) is parallel to the surface of the photovoltaic panel (200). The first guide plate (141) is inclined upward in a direction away from the second guide plate (142), and the third guide plate (143) is inclined downward in a direction away from the second guide plate (142). When the sponge (313) wipes the photovoltaic panel (200), the top surface of the mounting rod (311) is in contact with the bottom surface of the second guide plate (142), and the sponge (313) is compressed.

10. A cleaning method for a balcony photovoltaic module composite cleaning device, using the balcony photovoltaic module composite cleaning device as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. The cleaning fluid delivery assembly (400) delivers a preset amount of photovoltaic cleaning agent to the cleaning assembly (300); S2. The cleaning component (300) impregnated with photovoltaic cleaning agent completes a cleaning of the photovoltaic panel (200); S3, Repeat S1 and S2 at least twice; S4. The cleaning fluid delivery assembly (400) delivers a preset amount of water to the cleaning assembly (300); S5. The cleaning component (300) immersed in water completes a cleaning of the photovoltaic panel (200); S6. Repeat S4 and S5 at least three times.

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