Photovoltaic system assembly cross-array cleaning system and docking device

Abstract

The present application relates to photovoltaic module cleaning technical field, especially to a kind of photovoltaic system module cross array cleaning system and parking device.The cleaning system includes cleaning robot being arranged on photovoltaic array, cross array transfer device, transfer track and parking device;The transfer track is arranged at the left end or right end of photovoltaic array;The cross array transfer device is arranged on transfer track along transfer track, for hoisting and transferring cleaning robot on photovoltaic panel between different arrays;The parking device is arranged at the end of transfer track, and first parking position and second parking position for parking cross array transfer device and cleaning robot respectively are arranged on the parking device.The present application realizes the cross array transfer of cleaning robot on photovoltaic module by cross array transfer device, and realizes the parking of cross array transfer device and cleaning robot in non-cleaning period, improves the service life of device and robot, and also facilitates the maintenance, overhaul and transfer work of both.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module cleaning technology, and in particular to a photovoltaic system module cross-array cleaning system and a cleaning device. Background Technology

[0002] With increasing environmental protection requirements and demands for sustainable energy, the proportion of clean energy in total energy consumption is rising year by year, leading to a growing demand for cleaning photovoltaic (PV) arrays in the market. There are two main reasons for cleaning PV arrays: dirt can cause thermal conductivity differences on the PV panel surface, ultimately resulting in "hot spots" and damaging the PV modules; dirt also reduces the transmittance of the PV panel surface, thus affecting the photothermal conversion efficiency of the PV module array, i.e., reducing power generation efficiency. Therefore, cleaning PV panels is essential to ensure that power generation efficiency does not decrease and to prevent damage to the PV modules.

[0003] Currently, the cleaning of photovoltaic (PV) power plant modules is accomplished using specialized PV cleaning robots. For ease of cleaning, PV modules are typically arranged in arrays, with the cleaning robots cleaning different arrays. Therefore, there are two cleaning methods: one is to equip each array with a cleaning robot, which inevitably increases investment costs; the other is to transfer the same cleaning robot between different arrays using manual or mechanical lifting, which is extremely labor-intensive and inconvenient. Furthermore, for both flexible and rigid PV system modules, if the mounting brackets are high or the installation site is on water, in a pool, or in a valley, ordinary ground-based transfer equipment cannot perform the transfer of the cleaning robot. Replicating this terrain and manually transferring the module is difficult, costly, and poses safety risks.

[0004] In addition, during non-cleaning cycles of photovoltaic modules, cleaning robots need to be parked for a long time or require maintenance and repair. Currently, photovoltaic cleaning systems still leave the cleaning robots on the surface of the photovoltaic array during non-cleaning cycles. During long-term parking, they are subject to corrosion from the external environment, which will seriously affect the service life of the cleaning robots. At the same time, it is also inconvenient for maintenance, repair and relocation. Summary of the Invention

[0005] This invention aims to solve the technical problems existing in the prior art. To this end, this invention provides a photovoltaic system module cross-array cleaning system and parking device. It utilizes a cross-array transfer device to realize the cross-array transfer of the cleaning robot among photovoltaic modules, and simultaneously realizes the parking of the cross-array transfer device and the cleaning robot during non-cleaning cycles, thereby improving the service life of the cross-array transfer device and the cleaning robot, and also facilitating their maintenance, repair and relocation.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A photovoltaic module cross-array cleaning system is provided, including a cleaning robot mounted on the photovoltaic array, a cross-array transfer device, a transfer track, and a parking device; the transfer track is located at the left or right end of the photovoltaic array; the cross-array transfer device is movably mounted on the transfer track and is used to lift and transfer the cleaning robot between photovoltaic panels of different arrays; the parking device is located at the end of the transfer track and has a first parking position and a second parking position for parking the cross-array transfer device and the cleaning robot, respectively.

[0008] In a preferred embodiment of the photovoltaic system module cross-array cleaning system provided by the present invention, the cross-array transfer device is a remote-controlled self-propelled cross-array transfer device; the cleaning robot is provided with a lifting ring, and the cross-array transfer device is provided with a crane arm, and the cleaning robot is lifted by connecting the lifting ring to the crane arm of the cross-array transfer device.

[0009] In a preferred embodiment of the photovoltaic system module cross-array cleaning system provided by the present invention, the cleaning robot has a contact electrode on its lifting ring that is electrically connected to its power supply component, and the cross-array transfer device has a charging contact on its boom.

[0010] In a preferred embodiment of the photovoltaic system module cross-array cleaning system provided by the present invention, a water receiving cup is provided next to the lifting ring of the cleaning robot, the water receiving cup is connected to a water tank provided inside the cleaning robot, and a water injection pipe is provided next to the lifting arm of the cross-array transfer device relative to the water receiving cup.

[0011] The present invention also provides a parking device, which is the parking device in the photovoltaic system module cross-array cleaning system described in the above embodiments, including a protective shed, a lifting platform movable in the protective shed, and a first parking position and a second parking position arranged side by side on the lifting platform.

[0012] In a preferred embodiment of the parking device provided by the present invention, the first parking position is a parking track welded from square steel and connected to the transfer track, used for parking the cross-array transfer device, and a transition bridge is rotatably installed at one end of the parking track near the transfer track; the second parking position is a parking frame welded from square steel with the same tilt angle as the photovoltaic panel, used for parking the cleaning robot.

[0013] In a preferred embodiment of the parking device provided by the present invention, the protective canopy includes columns, a frame, and a protective plate. The columns are made of H-beams, and two columns are arranged side by side and fixed to a concrete foundation. The frame is a frame body with a top frame, a back frame, a left frame, and a right frame, which is welded from square steel. The left frame and the right frame are respectively welded to the two columns. The protective plate is a transparent protective plate, which is fixedly installed on the surface of the frame by connecting claws.

[0014] In a preferred embodiment of the parking device provided by the present invention, the lifting platform is welded from square steel, and guide wheel assemblies are provided on both sides, the guide wheel assemblies being disposed in the inner groove of the column.

[0015] In a preferred embodiment of the parking device provided by the present invention, a pulley is provided on the inner side of the top of the column, and the two sides of the lifting platform are connected to the winch device by slings passing around the pulleys.

[0016] In a preferred embodiment of the parking device provided by the present invention, an anti-fall mechanism is further included. The anti-fall mechanism is disposed on both sides of the lifting platform and is used for mechanical positioning of the first parking machine on the lifting platform after docking with the transfer track. It includes a positioning seat, a movable limiting plate, a pull rod, and a positioning plate. The positioning plate is fixedly installed on both sides of the lifting platform. The positioning seat is fixed to the column. The movable limiting plate is L-shaped, with its corner hinged to the positioning seat. A limiting block is provided on the positioning seat above its horizontal side, and a support block for supporting the positioning plate is provided on the side of its vertical side near the positioning plate. The bottom of the support block is set as an inclined surface. One end of the pull rod is hinged to the end of the horizontal side of the movable limiting plate, and the other end is vertically attached to the bottom of the column.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] I. This invention features a transfer track at the end of a photovoltaic array, using a cross-array transfer device to hoist a cleaning robot, enabling it to move between different photovoltaic arrays for cleaning. Simultaneously, the cross-array transfer device can charge and rehydrate the cleaning robot to ensure its normal operation. A parking device is also included for parking the cross-array transfer device and the cleaning robot outside of cleaning cycles, effectively protecting them from environmental corrosion (e.g., rainwater), extending their lifespan, and facilitating the unloading of the cross-array transfer device and the cleaning robot for maintenance, repair, or relocation.

[0019] II. The designed parking device has a simple structure. The first parking position directly connects to the transfer track where the cross-array transfer device is located. The cross-array transfer device hoists the cleaning robot directly into the first parking position and places the cleaning robot in the second parking position. The parking of the cross-array transfer device and the cleaning robot is simple and convenient. The anti-fall device designed in the parking device serves two purposes. First, it acts as a positioning point for the connection between the lifting platform and the transfer track, enabling precise positioning of the lifting platform after each lifting and lowering. Second, it effectively prevents the lifting platform from falling due to malfunction of the hoisting device, thus solving the existing fall hazard. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 This is a planar layout diagram of the photovoltaic system module cross-array cleaning system provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the parking device provided by the present invention;

[0023] Figure 3 This is a front view of the parking machine device provided by the present invention;

[0024] Figure 4 This is a side view of the parking device provided by the present invention;

[0025] Figure 5 yes Figure 2 Provided structural diagram of the combination of protective canopy and lifting platform for the parking equipment;

[0026] Figure 6 yes Figure 3 A magnified view of the provided fall protection mechanism;

[0027] Figure 7 yes Figure 3 The provided AA section view. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] This embodiment provides a cross-array cleaning system for photovoltaic system modules, as shown in the attached figure. Figure 1 As shown, it includes a cleaning robot 2 mounted on the photovoltaic array 1, a cross-array transfer device 3, a transfer track 4, and a parking device 5.

[0031] The transfer track 4 is located at the left or right end of the photovoltaic array 1; the cross-array transfer device 3 is movably mounted on the transfer track 4. Preferably, the cross-array transfer device 3 in this embodiment is a remote-controlled self-propelled cross-array transfer device, which uses solar photovoltaic modules as power supply components. In this embodiment, the cleaning robot 2 is equipped with a lifting ring (not shown in the figure), and the cross-array transfer device 3 is equipped with a boom 3.1. The cleaning robot is lifted by connecting the lifting ring to the boom of the cross-array transfer device, thereby realizing the cross-array transfer device to lift and transfer the cleaning robot between photovoltaic panels of different arrays. The parking device 5 is located at the end of the transfer track 4, and the parking device 5 is equipped with a first parking position 5.1 and a second parking position 5.2 for parking the cross-array transfer device 3 and the cleaning robot 2, respectively.

[0032] This invention features a transfer track at the end of the photovoltaic array, using a cross-array transfer device to hoist the cleaning robot, enabling it to be transferred between different photovoltaic arrays for cleaning. It also includes a parking device for parking the cross-array transfer device and the cleaning robot during non-cleaning cycles, effectively protecting them from environmental corrosion (e.g., rainwater) and extending their lifespan. The parking device also facilitates the lowering of the cross-array transfer device and the cleaning robot for maintenance, repair, or relocation.

[0033] Example 2

[0034] Based on Embodiment 1, this embodiment further describes that the lifting ring of the cleaning robot 2 is provided with contact electrodes (not shown in the figure) electrically connected to its power supply component, and the boom 3.1 of the cross-array transfer device 3 is provided with charging contacts (not shown in the figure). This embodiment realizes the function of the cross-array transfer device to charge the cleaning robot, avoiding the problem of insufficient power of the cleaning robot due to weather conditions, and ensuring the normal operation of the cleaning robot.

[0035] Example 3

[0036] Based on Embodiment 1 or Embodiment 2, this embodiment further includes a water receiving cup (not shown in the figure) next to the lifting ring of the cleaning robot 2. The water receiving cup is connected to a water tank located inside the cleaning robot. A water inlet pipe (not shown in the figure) is also provided next to the lifting arm 3.1 of the cross-array transfer device 3, opposite to the water receiving cup. This embodiment enables the cross-array transfer device to replenish water to the cleaning robot, ensuring normal wet cleaning operations of the cleaning robot.

[0037] Example 4

[0038] This embodiment provides a parking device, as shown in the attached figure. Figure 2 To be continued Figure 5 As shown, the parking device 5 described in this embodiment is the parking device 5 in any of the photovoltaic system module cross-array cleaning systems described in Embodiments 1 to 3. The parking device 5 includes a protective shed 5.3, a lifting platform 5.4 movably installed inside the protective shed, and a first parking position 5.1 and a second parking position 5.2 arranged side by side on the platform of the lifting platform 5.4.

[0039] Preferred options are listed below. Figure 5 As shown, the first parking position 5.1 is a parking rail welded from square steel and connected to the transfer rail 4, used to park the cross-array transfer device 3. A transition bridge 5.1.0 is rotatably installed at one end of the parking rail near the transfer rail 4, the transition bridge bridging the gap between the parking rail and the transfer rail. The second parking position 5.2 is a parking frame welded from square steel with the same inclination as the photovoltaic panel, used to park the cleaning robot. In this embodiment, the first parking position 5.1 can directly connect to the transfer rail 4 where the cross-array transfer device 3 is located. The cross-array transfer device 3 lifts the cleaning robot 2 directly into the first parking position and places the cleaning robot 2 in the second parking position 5.2. Parking the cross-array transfer device and the cleaning robot is simple and convenient.

[0040] Preferably, the protective shed 5.3 of this embodiment is as shown in the attached figure. Figure 5As shown, the system includes columns 5.3.1, a canopy 5.3.2, and a protective plate 5.3.3. The columns 5.3.1 are made of H-beams, and two columns 5.3.1 are arranged side-by-side and fixed to a concrete foundation. Specifically, the grooves of the two columns 5.3.1 are arranged opposite each other, serving as lifting tracks for the guide wheel assemblies on both sides of the lifting platform. The canopy 5.3.2 is a frame structure welded from square steel, consisting of a top frame, a back frame, a left frame, and a right frame. The front of the canopy is unobstructed, ensuring that the cross-array transfer device and the cleaning robot can enter their parking positions within the canopy. The left and right frames of the canopy 5.3.2 are welded to the two columns 5.3.1 respectively. The protective plate 5.3.3 is a transparent protective plate, preferably tempered glass, which is fixedly installed on the surface of the shed by a connecting claw. It is used to protect the cross-array transfer device and the cleaning robot inside the shed. At the same time, using glass as a protective plate does not affect the cleaning robot's absorption of solar energy to replenish power. Similarly, in this embodiment, the cross-array transfer device can also use solar photovoltaic modules as power supply components, and the shed will not affect the cross-array transfer device's absorption of solar energy to replenish power.

[0041] Preferred options are listed below. Figure 2 To be continued Figure 5 As shown, the lifting platform 5.4 in this embodiment is welded from square steel, and guide wheel assemblies are provided on both sides. The guide wheel assembly 5.4.0 is located in the inner groove of the column 5.3.1, and the inner groove of the column serves as the running track of the guide wheel assembly, as shown in the attached figure. Figure 7 As shown. Specifically, the guide wheel assembly 5.4.0 of this embodiment includes a mounting plate 5.4.0.1, a steel guide wheel 5.4.0.2, and a rotating shaft 5.4.0.3. One end of the mounting plate 5.4.0.1 is fixedly installed on the lifting platform 5.4, and the other end is provided with two waist-shaped grooves arranged along the width direction of the column 5.3.1. The steel guide wheel 5.1.0.2 is rotatably disposed on one end of the rotating shaft 5.4.0.3, and the other end of the rotating shaft passes through the waist-shaped groove and is connected to a fastener. The spacing between the two steel guide wheels can be adjusted according to the width of the inner groove of the column.

[0042] Preferred options are listed below. Figure 5 As shown in this embodiment, the top inner side of the column 5.3.1 is also provided with a pulley 5.5. The two sides of the lifting platform 5.4 are connected to the winch device (not shown in the figure) by slings passing around the pulley 5.5. The lifting platform is controlled to move up and down by the winch device.

[0043] Example 5

[0044] Based on Embodiment 4, the parking device 5 in this embodiment is also designed with an anti-fall mechanism 5.6, as shown in the attached figure. Figure 3 and attached Figure 6As shown, the anti-fall mechanism 5.6 is located on both sides of the lifting platform 5.4 and is used for mechanical positioning of the first parking position on the lifting platform after docking with the transfer track. It includes a positioning seat 5.6.1, a movable limit plate 5.6.2, a pull rod 5.6.3, and a positioning plate 5.6.4.

[0045] The positioning plate 5.6.4 is fixedly installed on both sides of the lifting platform 5.4. In this embodiment, the positioning plate and the mounting plate of the guide wheel assembly are set as an integral structure; in other embodiments, the positioning plate is set separately. The positioning seat 5.6.1 is fixed to the column 5.3.1, and its installation height is such that after the movable limit plate positions the positioning plate, the first parking position on the lifting platform is just aligned with the transfer track. The movable limiting plate 5.6.2 is L-shaped, with its corner hinged to the positioning seat 5.6.1. A limiting block 5.6.1.0 is located on the positioning seat 5.6.1 above its horizontal side. The limiting block is designed to prevent the movable limiting plate from flipping downwards. A support block 5.6.2.0 is located on the vertical side of the movable limiting plate 5.6.2 near the positioning plate 5.6.4 to support the positioning plate. This support block lifts the positioning plate on the lifting platform, allowing the movable limiting plate to effectively support the lifting platform. The lower part of the support block 5.6.2.0 is sloped, allowing the lifting platform to flip up by pressing against the slope during lifting, thus enabling the lifting platform to pass smoothly. One end of the pull rod 5.6.3 is hinged to the horizontal end of the movable limiting plate 5.6.2, and the other end hangs vertically from the bottom of the column 5.3.1.

[0046] Working principle: When the lifting platform is raised, it moves to below the movable limit plate. As it continues to rise, it presses against the inclined surface of the movable limit plate, causing it to flip upwards until the lifting platform has completely passed through. Then, the lifting platform is lowered until its positioning plate contacts the support block of the movable limit plate. When it is necessary to lower the lifting platform, it is slightly raised, the lever is pulled down, causing the movable limit plate to flip up, and then the lifting platform is lowered until it has completely passed through the movable limit plate.

[0047] It is worth noting that the cleaning robot described in this application can be the self-propelled cleaning robot in the prior art; the cross-array transfer device described in this application includes a self-propelled chassis and a boom mounted on the self-propelled chassis. The boom lifts the cleaning robot through the lifting ring of the cleaning robot, which is a conventional technical means in the field of hoisting technology. It can be implemented by those skilled in the art, and will not be described in detail in this application. Moreover, this technology is not the technical solution that this application needs to protect.

[0048] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A photovoltaic system module cross-array cleaning system, comprising a cleaning robot mounted on the photovoltaic array, characterized in that: It also includes cross-array transfer devices, transfer tracks, and parking devices; The transfer track is located at the left or right end of the photovoltaic array; The cross-array transfer device is mounted on the transfer track and is used to lift and transfer the cleaning robot between photovoltaic panels in different arrays. The parking device is located at the end of the transfer track, and the parking device is provided with a first parking position and a second parking position for parking the cross-array transfer device and the cleaning robot, respectively. The parking device includes a protective canopy, a lifting platform movable inside the protective canopy, and a first parking space and a second parking space arranged side by side on the platform of the lifting platform. It also includes an anti-fall mechanism, which is located on both sides of the lifting platform and is used for mechanical positioning of the first parking position on the lifting platform after docking with the transfer rail. It includes a positioning seat, a movable limiting plate, a pull rod, and a positioning plate. The positioning plate is fixedly installed on both sides of the lifting platform. The positioning seat is fixed to the column of the protective canopy. The movable limiting plate is "L" shaped, and its corner is hinged to the positioning seat. A limiting block is provided on the positioning seat above its horizontal side, and a support block for supporting the positioning plate is provided on the side of its vertical side near the positioning plate. The bottom of the support block is set as an inclined surface. One end of the pull rod is hinged to the end of the horizontal side of the movable limiting plate, and the other end is vertically attached to the bottom of the column.

2. The photovoltaic system module cross-array cleaning system according to claim 1, characterized in that: The cross-array transfer device is a remote-controlled self-propelled cross-array transfer device; the cleaning robot is equipped with a lifting ring, and the cross-array transfer device is equipped with a crane arm. The cleaning robot is lifted by connecting the lifting ring to the crane arm of the cross-array transfer device.

3. The photovoltaic system module cross-array cleaning system according to claim 2, characterized in that: The cleaning robot has contact electrodes on its lifting ring that are electrically connected to its power supply components, and the boom of the cross-array transfer device has charging contacts.

4. The photovoltaic system module cross-array cleaning system according to claim 2, characterized in that: A water cup is also provided next to the lifting ring of the cleaning robot. The water cup is connected to a water tank located inside the cleaning robot. A water injection pipe is also provided next to the lifting arm of the cross-array transfer device, opposite to the water cup.

5. The photovoltaic system module cross-array cleaning system according to claim 1, characterized in that: The first parking position is a parking rail made of square steel welded together and connected to the transfer rail. It is used to park the cross-array transfer device, and a transition bridge is rotatably installed at one end of the parking rail near the transfer rail. The second parking position is a parking frame made of square steel with the same tilt angle as the photovoltaic panel, used to park the cleaning robot.

6. The photovoltaic system module cross-array cleaning system according to claim 1, characterized in that: The protective shed also includes a frame and a protective panel. The columns are made of H-beams, and two columns are arranged side by side and fixed to a concrete foundation. The frame is a frame body with a top frame, a back frame, a left frame and a right frame, which are welded together from square steel. The left frame and the right frame are welded to the two columns respectively. The protective panel is a transparent protective panel, which is fixedly installed on the surface of the frame by connecting claws.

7. The photovoltaic system module cross-array cleaning system according to claim 1, characterized in that: The lifting platform is welded from square steel, and guide wheel assemblies are provided on both sides. The guide wheel assemblies are located in the inner groove of the column.

8. The photovoltaic system module cross-array cleaning system according to claim 7, characterized in that: The top inner side of the column is also equipped with a pulley, and the two sides of the lifting platform are connected to the winch device by slings that pass around the pulleys.

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