Automatic cleaning robot for small-array photovoltaic modules

Abstract

The automatic cleaning robot comprises an upper rail and a lower rail which are installed at the top and the bottom of the small-array photovoltaic module respectively, the bottom of the upper rail and the bottom of the lower rail are each fixedly connected with two sets of linear motors, and the driving ends of the two sets of linear motors are each fixedly connected with a sliding base. A cleaning brush is correspondingly arranged between the two sliding seats, fixing frames are fixedly connected to the two ends of the upper rail and the two ends of the lower rail correspondingly, locking mechanisms are arranged on the portions, away from the bottoms, of the fixing frames, extending frames are fixedly connected to the outer sides of the fixing frames, and a charging photovoltaic panel is fixedly connected to the center of the top of each extending frame; the two ends of the extension frame are jointly and fixedly connected with a protection frame. The upper track, the lower track, the cleaning brush and the locking mechanism are matched with one another, so that the device is simple in mechanism and stable in performance, the photovoltaic module can be automatically cleaned according to a preset period in an unattended environment, and a large amount of time and manpower are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component cleaning equipment, in particular to an automatic cleaning robot for small-array photovoltaic components. Background Art

[0002] Photovoltaic modules are composed of high-efficiency monocrystalline / polycrystalline solar cells, low-iron ultra-white velvet tempered glass, packaging materials (EVA, POE, etc.), functional backplanes, interconnection bars, bus bars, junction boxes and aluminum alloy frames. Since the output voltage of a single photovoltaic panel is low, and the electrodes of unpackaged batteries are easily detached due to environmental influences, a certain number of single-chip batteries must be sealed in series or parallel to form a photovoltaic module.

[0003] When currently existing small-array photovoltaic modules are in use, as the use time continues to increase, a large amount of dust and impurities are easily accumulated on the surface of the array photovoltaic panels, affecting the subsequent photovoltaic power generation process. Therefore, it is often necessary to clean the surface of the photovoltaic panels regularly. Generally, small-array photovoltaic modules are often cleaned manually due to their small overall area.

[0004] During the cleaning process, staff need to be extra careful. If they are not careful, it is easy to cause scratches and damage to the surface of the photovoltaic panel. Therefore, the cleaning work is difficult and time-consuming. Therefore, we propose to design a small array photovoltaic module automatic cleaning robot. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] An automatic cleaning robot for small-array photovoltaic components comprises an upper track and a lower track respectively installed on the top and bottom of the small-array photovoltaic components, two groups of linear motors are fixedly connected to the bottom of the upper track and the lower track, the driving ends of the two groups of linear motors are fixedly connected to slides, and cleaning brushes are correspondingly arranged between the two slides, both ends of the upper track and the lower track are fixedly connected to fixed frames, the fixed frames are provided with locking mechanisms away from the bottom, an extension frame is fixedly connected to the outside of the fixed frame, a charging photovoltaic panel is fixedly connected to the top center of the extension frame, and protective frames are commonly fixedly connected to both ends of the extension frame.

[0008] As a preferred solution for the automatic cleaning robot of the small array photovoltaic assembly described in the utility model, the cleaning brush includes a brush and a wiper strip, and both ends of the brush are fixed with the slider by bolts. The device adopts a replaceable structure in which the brush and wiper strips are combined, and will not cause any damage to the surface of the photovoltaic panel.

[0009] As a preferred solution of the small array photovoltaic module automatic cleaning robot described in the utility model, the locking mechanism includes a locking frame fixedly connected to the bottom of the fixing frame, a dual-axis motor is embedded and fixedly connected at the inner center of the locking frame, and both driving shafts of the dual-axis motor are fixedly connected with locking rings. To ensure the safety and stability of the robot, when the robot is in the parking position, the locking mechanism will be started, and the two locking rings will be driven to rotate by the dual-axis motor to contact the cleaning brush and limit it to prevent the mechanism from being blown off and damaged in strong winds.

[0010] As a preferred solution of the automatic cleaning robot for small array photovoltaic modules described in the utility model, the protective frame includes two brackets fixedly connected to the two ends of the extension frame, the two ends of the brackets are commonly fixedly connected with a protective plate, and the inner corners of the brackets are fixedly connected with reinforcing rods. The bottom of the protective plate is a parking position, and the robot will automatically stay at the parking position for placement when not in working state.

[0011] As a preferred solution for the automatic cleaning robot of the small array photovoltaic module described in the utility model, the upper rail, the lower rail, the fixing frame and the extension frame are all made of light aluminum material, and the brush outer frame is installed outside the photovoltaic module using aluminum alloy profiles, and the structure is light and has high strength.

[0012] As a preferred solution for the automatic cleaning robot of the small array photovoltaic module described in the utility model, the protective plate section is arranged in a trapezoidal shape to facilitate protection of the cleaning machine parked at the bottom and reduce damage caused by strong winds or rainy weather.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model cooperates with each other between the upper rail, the lower rail, the cleaning brush and the locking mechanism. The device mechanism is simple and stable. It can automatically clean the photovoltaic modules in a predetermined cycle in an unattended environment, saving a lot of time and manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 This is a schematic diagram of the installation of the automatic cleaning robot for small array photovoltaic modules of the utility model;

[0017] Figure 2 This is a schematic diagram of the cleaning brush structure of the utility model small array photovoltaic module automatic cleaning robot;

[0018] Figure 3 This is a schematic diagram of the locking mechanism structure of the small array photovoltaic module automatic cleaning robot of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the protective frame structure of the automatic cleaning robot for small array photovoltaic components.

[0020] Illustration: 1. Upper track; 2. Lower track; 3. Linear motor; 4. Sliding seat; 5. Cleaning brush; 501. Brush; 502. Wiper strip; 6. Fixing frame; 7. Locking mechanism; 701. Locking frame; 702. Dual-axis motor; 703. Lock ring; 8. Extension frame; 9. Charging photovoltaic panel; 10. Protective frame; 101. Bracket; 102. Protective plate. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] See also Figure 1-4The utility model provides an automatic cleaning robot for small array photovoltaic modules, including an upper track 1 and a lower track 2 respectively installed on the top and bottom of the small array photovoltaic modules, two groups of linear motors 3 are fixedly connected to the bottom of the upper track 1 and the lower track 2, the driving ends of the two groups of linear motors 3 are fixedly connected to the slide 4, and a cleaning brush 5 is correspondingly arranged between the two slides 4. The cleaning brush 5 includes a brush 501 and a wiper strip 502, and both ends of the brush 501 are fixed to the slide 4 by bolts. The device adopts a replaceable structure in which the brush 501 and the wiper strip 502 cooperate, and will not cause any damage to the surface of the photovoltaic panel.

[0025] Both ends of the upper rail 1 and the lower rail 2 are fixedly connected with a fixing frame 6, and a locking mechanism 7 is arranged on the fixing frame 6 away from the bottom. The locking mechanism 7 includes a locking frame 701 fixedly connected to the bottom of the fixing frame 6, and a dual-axis motor 702 is embedded and fixedly connected at the center of the locking frame 701. Both driving shafts of the dual-axis motor 702 are fixedly connected with locking rings 703. To ensure the safety and stability of the robot, when the robot is in the parking position, the locking mechanism 7 will be started, and the two locking rings 703 will be driven to rotate by the dual-axis motor 702 to contact the cleaning brush 5, and limit it to prevent the mechanism from being blown off and damaged in strong winds.

[0026] An extension frame 8 is fixedly connected to the outside of the fixed frame 6, a charging photovoltaic panel 9 is fixedly connected to the top center of the extension frame 8, and a protective frame 10 is fixedly connected to both ends of the extension frame 8. The protective frame 10 includes two brackets 101 fixedly connected to both ends of the extension frame 8, and a protective plate 102 is fixedly connected to the ends of the two brackets 101. The cross-section of the protective plate 102 is trapezoidal, which is convenient for protecting the cleaning machine parked at the bottom and reducing damage in windy and rainy weather. A reinforcing rod is fixedly connected to the inner corner of the bracket 101, and the bottom of the protective plate 102 is a parking position. When the robot is not in working state, it will automatically stay at the parking position for placement.

[0027] In this embodiment, the upper rail 1, the lower rail 2, the fixing frame 6 and the extension frame 8 are all made of light aluminum material. The brush outer frame is installed outside the photovoltaic module with aluminum alloy profiles, and the structure is light and has high strength.

[0028] This cleaning robot realizes the timing start of the linear motor 3 and the conditional trigger start through external PLC programming (the rainy day startup is achieved by setting up an ultrasonic sensor in the existing photovoltaic module base, setting up a wireless signal transceiver module, and realizing remote control startup, etc.).

[0029] In this device, the cleaning brush 5 adopts a replaceable structure of the brush 501 and the wiper bar 502, and will not cause any damage to the surface of the photovoltaic panel. At the same time, the brush frame uses aluminum alloy profiles, which has a light structure and high structural strength.

[0030] The cleaning brush 5 is located between the upper track 1 and the lower track 2. By providing a synchronous driving module between the linear motor 3, the cleaning brush 5 is driven by the linear motor 3, and moving back and forth parallel to the surface of the photovoltaic module to achieve the purpose of cleaning the surface of the photovoltaic panel.

[0031] In the non-working state, the robot will automatically stay in the stop position, and a protective plate 102 is installed above the stop position. In order to ensure the safety and stability of the robot, when the robot is in the stop position, the locking mechanism 7 will lock the cleaning brush 5 to prevent the mechanism from being blown off and damaged in strong winds.

[0032] In order to ensure the independent work of this cleaning robot, the robot is equipped with an independent power supply system, which consists of a charging photovoltaic panel 9 and a supporting controller, inverter and battery, etc., which can realize independent solar charging, power the cleaning mechanism, and meet the requirements of all-weather use.

[0033] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic cleaning robot for a small array photovoltaic module, comprising an upper track (1) and a lower track (2) respectively mounted on the top and bottom of the small array photovoltaic module, characterized in that: The bottom of the upper rail (1) and the bottom of the lower rail (2) are both fixedly connected with two groups of linear motors (3), the driving ends of the two groups of linear motors (3) are both fixedly connected with slides (4), and a cleaning brush (5) is correspondingly arranged between the two slides (4). Both ends of the upper rail (1) and the lower rail (2) are both fixedly connected with a fixing frame (6), and a locking mechanism (7) is arranged on the fixing frame (6) away from the bottom. An extension frame (8) is fixedly connected to the outside of the fixing frame (6), and a charging photovoltaic panel (9) is fixedly connected at the top center of the extension frame (8). Both ends of the extension frame (8) are fixedly connected with a protective frame (10).

2. The small array photovoltaic module automatic cleaning robot according to claim 1, characterized in that: The cleaning brush (5) comprises a brush (501) and a wiper strip (502), and both ends of the brush (501) are fixed to the slide seat (4) by bolts.

3. The small array photovoltaic module automatic cleaning robot according to claim 1, characterized in that: The locking mechanism (7) comprises a locking frame (701) fixedly connected to the bottom of the fixing frame (6), a dual-axis motor (702) is embedded and fixedly connected at the center of the locking frame (701), and both driving shafts of the dual-axis motor (702) are fixedly connected to locking rings (703).

4. The small array photovoltaic module automatic cleaning robot according to claim 1, characterized in that: The protection frame (10) comprises two brackets (101) fixedly connected to the two ends of the extension frame (8), the ends of the two brackets (101) are commonly fixedly connected to a protection plate (102), and the inner corners of the brackets (101) are fixedly connected to a reinforcing rod.

5. The small array photovoltaic module automatic cleaning robot according to claim 1, characterized in that: The upper track (1), the lower track (2), the fixing frame (6) and the extension frame (8) are all made of light aluminum.

6. The small array photovoltaic module automatic cleaning robot according to claim 4, characterized in that: The protection plate (102) has a trapezoidal cross section.

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