Photovoltaic cleaning system

Abstract

The utility model discloses a photovoltaic cleaning system, which relates to the technical field of photovoltaic cleaning and comprises a photovoltaic module cleaning robot control system and a server center control system. The photovoltaic module cleaning robot control system and the server center system are in remote radio frequency communication through a LoRaWAN gateway; automatic cleaning of the photovoltaic array is effectively achieved, so that the power generation efficiency of the photovoltaic array is improved, water-free cleaning is adopted, a remote control mode is supported, unattended operation is achieved, and safety accidents are reduced; the equipment adopts a direct-current brushless motor as power drive of main equipment; the direct current brushless motor has a series of advantages of simple structure, reliable operation, convenient maintenance and the like of an alternating current motor, and also has many advantages of high operation efficiency, good speed regulation performance and the like of a direct current motor; the self-power-taking technology needs to be provided with a light and efficient solar panel power generation system, and energy supplementation of a power cell is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cleaning, in particular to a photovoltaic cleaning system. Background Art

[0002] In view of the difficulties that current mobile robots face in miniaturizing their bodies when performing tasks in complex terrains, insufficient obstacle-crossing stability and lack of autonomous obstacle-crossing capabilities, as well as the problem of smoothly docking photovoltaic cleaning equipment to photovoltaic modules, multi-row / cross-row cleaning technology is used to complete fully automatic and high-frequency cleaning tasks between different rows of photovoltaic arrays, effectively improving the power generation efficiency of photovoltaic power stations.

[0003] In recent years, the utilization of solar energy resources in photovoltaic power generation systems has become increasingly important, and photovoltaic power stations have also been vigorously developed in countries around the world. Large-scale photovoltaic power stations have been fully built and put into operation in China, saving a large amount of natural gas, coal, oil and other fuels. At the same time, with the establishment of large-scale photovoltaic power stations and the continuous progress of photovoltaic power generation [1]. In the photovoltaic power generation process, power generation efficiency is the most important criterion. According to research, dust will seriously affect the efficiency of photovoltaic power generation. How to improve the efficiency of photovoltaic power generation and improve energy utilization has become one of the hot topics in domestic research.

[0004] Photovoltaic power stations are generally built in areas with harsh natural environments and serious wind and sand hazards. These harsh environmental factors have a significant impact and harm on photovoltaic cell modules, especially the long-term coverage of photovoltaic modules by wind and sand dust. If they are not cleaned and maintained in time for a long time, the efficiency of photovoltaic power generation will be greatly reduced, which will not only fail to meet the power generation requirements of the load, but also reduce the utilization rate of solar energy and photovoltaic power generation systems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a photovoltaic cleaning system in view of the deficiencies of the background technology; the automatic cleaning of the photovoltaic array can be realized, thereby improving the power generation efficiency of the photovoltaic array.

[0006] The utility model adopts the following technical solutions to solve the above technical problems:

[0007] A photovoltaic cleaning system comprises a photovoltaic module cleaning robot control system and a server center control system; the photovoltaic module cleaning robot control system and the server center system perform long-distance radio frequency communication via a LoRaWAN gateway;

[0008] The photovoltaic module cleaning robot control system includes a main control system and a cleaning robot control system; the cleaning robot control system includes a controller module, a motor driver, a DC motor, a transmission module, a LoRa module, and a power supply module.

[0009] The output end of the controller module is connected to the input end of the motor driver, the output end of the motor driver is connected to the input end of the DC motor, and the output end of the DC motor is connected to the input end of the transmission module; the controller module is connected to the LoRa module;

[0010] The power supply module includes a photovoltaic panel, an anti-backflow voltage stabilizing circuit, a storage battery, and a power supply conversion unit. The photovoltaic panel is connected to the storage battery through the anti-backflow voltage stabilizing circuit, and the storage battery is connected to the controller module through the power supply conversion unit.

[0011] As a further preferred solution of a photovoltaic cleaning system of the present invention, the motor driver includes a motor driver U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, and a DC motor M1; wherein, pin 1, pin 15, and pin 8 of the motor driver U4 are grounded, one end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC terminal of the motor driver U4, and the other end of the capacitor C6 is grounded. One end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor driver U4, and the positive electrode of the diode D2. The other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor driver U4. Pin 13 of the motor driver U4 is respectively connected to the positive electrode of the diode D3, one end of the capacitor C7, and one end of the DC motor M2. Pin 14 of the motor driver U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2. The negative electrode of the diode D2 is grounded, and the negative electrode of the diode D3 is grounded.

[0012] As a further preferred solution of a photovoltaic cleaning system of the present invention, the controller module adopts a 32-bit embedded microcontroller chip.

[0013] As a further preferred solution of a photovoltaic cleaning system of the present invention, the anti-backflow voltage stabilizing circuit includes a voltage input Vin terminal, a capacitor C1, a capacitor C2, a chip LM2596, an inductor L1, a diode D31, a diode D4, and a voltage output Vout terminal. The voltage input Vin terminal is respectively connected to one end of the capacitor C1 and the +VIN pin of the chip LM2596. The other end of the capacitor C1 is grounded. The GND pin of the chip LM2596 is grounded. The ON / OFF pin of the chip LM2596 is grounded. The OUTPUT pin of the chip LM2596 is respectively connected to one end of the inductor L1 and the cathode of the diode D31. The FEEDBACK pin of the chip LM2596 is respectively connected to the other end of the inductor L1, the anode of the diode D4, and one end of the capacitor C2. The other end of the capacitor C2 is grounded. The anode of the diode D31 is grounded. The cathode of the diode D4 is connected to the voltage output Vout terminal

[0014] As a further preferred solution of a photovoltaic cleaning system of the present utility model, the power supply conversion unit includes a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a first voltage output terminal, a first voltage input terminal, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor, and a second voltage output terminal;

[0015] The DC12V voltage input terminal is respectively connected to the negative electrode of the first diode, one end of the first capacitor, one end of the second capacitor, and the VIN terminal of the LM2576S-5.0 power supply chip. The other end of the first diode is respectively connected to the other end of the first capacitor, the other end of the second capacitor, the EN terminal of the LM2576S-5.0 power supply chip, the GND terminal of the LM2576S-5.0 power supply chip, the positive electrode of the second diode, and one end of the third capacitor and grounded; the negative electrode of the second diode is respectively connected to the VOUT terminal of the LM2576S-5.0 power supply chip and one end of the first inductor. The other end of the first inductor is respectively connected to the other end of the third capacitor, the FB terminal of the LM2576S-5.0 power supply chip, and the 5V output terminal;

[0016] The 5V input terminal is respectively connected to one end of the fourth capacitor, the EN terminal of the TPS7A7001 power supply chip, and the IN terminal of the TPS7A7001 power supply chip. The other end of the fourth capacitor is grounded. The GND terminal of the TPS7A7001 power supply chip is connected to one end of the first resistor. The other end of the first resistor is respectively connected to one end of the second resistor and the FB terminal of the TPS7A7001 power supply chip. The other end of the second resistor is respectively connected to one end of the fifth capacitor, the OUT terminal of the TPS7A7001 power supply chip, and the 3.3V output terminal. The other end of the fifth capacitor is grounded.

[0017] Compared with the prior art, the present utility model adopts the above technical solutions and has the following technical effects:

[0018] 1. For a photovoltaic cleaning system of the present utility model, the cleaning robot control system includes a controller module, a motor driver, a DC motor M2, a transmission module, a LoRa module, and a power supply module; the power supply module includes a photovoltaic panel, an anti-backflow voltage stabilizing circuit, a storage battery, and a power supply conversion unit; it effectively realizes the automatic cleaning of the photovoltaic array, which is beneficial to improving the power generation efficiency of the photovoltaic array. The device adopts waterless cleaning and supports remote control mode, realizes unattended operation, and reduces the occurrence of safety accidents;

[0019] 2. The device uses a direct current brushless motor as the power drive for the main device. The direct current brushless motor has a series of advantages such as a simple structure, reliable operation, and convenient maintenance of an alternating current motor, and also has many advantages such as high operating efficiency and good speed regulation performance of a direct current motor. The most important part of the direct current brushless motor is its control structure, and its driver can control the rotor to maintain a certain speed, with more stable performance.

[0020] 3. The self-powered technology should be equipped with a lightweight and efficient solar panel power generation system to complete the energy supplement for the power cells. During the use process, there is no need to replace the cells, reducing the workload, facilitating the engineering bridging between the panels, and facilitating the combined operation between areas without causing damage to the components.

[0021] 4. Solar resources are very rich, but the light intensity of the sun varies throughout the day. Through an anti-backflow voltage stabilizing circuit, as Figure 4 shown, the capacitors C1 and C2 are filter capacitors, the magnetic bead L1 is used to correct the voltage change and fluctuation at the output end, the diode D4 prevents backflow, and the fast charging method is adopted. Two lead-crystal batteries with a direct current voltage of 12V and a capacity of 75Ah are charged separately in different time periods. To achieve fast charging and considering the conversion efficiency of the solar photovoltaic panel, an 18V 330W folding photovoltaic panel is selected; a 10% remaining power is set to extend the battery service life.

[0022] 5. The power supply module uses a power supply conversion circuit for power control, with stable output voltage and high conversion accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the structural schematic diagram of a photovoltaic cleaning system of the present utility model;

[0024] Figure 2 is the structural schematic diagram of the cleaning robot control system of the present utility model;

[0025] Figure 3 is the circuit diagram of the motor driver of the present utility model;

[0026] Figure 4 is the circuit diagram of the anti-backflow voltage stabilizing circuit of the present utility model;

[0027] Figure 5 is the circuit diagram of the power supply conversion circuit of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0028] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings:

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0030] A photovoltaic cleaning system, as Figure 1 shown, includes two parts: a control system for a photovoltaic module cleaning robot and a server center control system; the control system for the photovoltaic module cleaning robot and the server center system perform long-distance radio frequency communication through a LoRaWAN gateway;

[0031] The control system for the photovoltaic module cleaning robot includes a main control system and a control system for the cleaning robot; as Figure 2 shown, the control system for the cleaning robot includes a controller module, a motor driver, a DC motor, a transmission module, a LoRa module, and a power supply module. The output end of the controller module is connected to the input end of the motor driver, the output end of the motor driver is connected to the input end of the DC motor, and the output end of the DC motor is connected to the input end of the transmission module; the controller module is connected to the LoRa module; the power supply module includes a photovoltaic panel, an anti-backflow voltage stabilizing circuit, a storage battery, and a power supply conversion unit. The photovoltaic panel is connected to the storage battery through the anti-backflow voltage stabilizing circuit, and the storage battery is connected to the controller module through the power supply conversion unit.

[0032] As Figure 3 shown, the motor driver includes a motor driver U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, and a DC motor M1; among them, pin 1, pin 15, and pin 8 of the motor driver U4 are grounded. One end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC terminal of the motor driver U4, and the other end of the capacitor C6 is grounded. One end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor driver U4, and the positive pole of the diode D2. The other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor driver U4. Pin 13 of the motor driver U4 is respectively connected to the positive pole of the diode D3, one end of the capacitor C7, and one end of the DC motor M2. Pin 14 of the motor driver U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2. The negative pole of the diode D2 is grounded, and the negative pole of the diode D3 is grounded.

[0033] Preferably, the controller module uses a 32-bit embedded microcontroller chip.

[0034] As Figure 4As shown in the figure, the anti-backflow voltage stabilizing circuit includes a voltage input Vin terminal, a capacitor C1, a capacitor C2, a chip LM2596, an inductor L1, a diode D31, a diode D4, and a voltage output Vout terminal. The voltage input Vin terminal is respectively connected to one end of the capacitor C1 and the +VIN pin of the chip LM2596. The other end of the capacitor C1 is grounded. The GND pin of the chip LM2596 is grounded. The ON / OFF pin of the chip LM2596 is grounded. The OUTPUT pin of the chip LM2596 is respectively connected to one end of the inductor L1 and the cathode of the diode D31. The FEEDBACK pin of the chip LM2596 is respectively connected to the other end of the inductor L1, the anode of the diode D4, and one end of the capacitor C2. The other end of the capacitor C2 is grounded. The anode of the diode D31 is grounded. The cathode of the diode D4 is connected to the voltage output Vout terminal.

[0035] Solar resources are very rich, but the sunlight intensity varies during the day. Through the anti-backflow voltage stabilizing circuit, as Figure 4 shown, the capacitors C1 and C2 are filter capacitors. The bead L1 is used to correct the voltage variation at the output terminal. The diode D4 prevents backflow. Using the fast charging method, two lead crystal batteries with a DC voltage of 12V and a capacity of 75Ah are charged separately in different time periods (this battery has no problems such as acid mist volatilization, can be deeply discharged to 0V, and can recover all rated capacity after charging). To achieve fast charging and considering the conversion efficiency of the solar photovoltaic panel, an 18V 330W foldable photovoltaic panel is selected; to extend the battery life, a 10% remaining power is set.

[0036] As Figure 5 shown, the power supply conversion unit includes a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a first voltage output terminal, a first voltage input terminal, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor, and a second voltage output terminal;

[0037] The DC12V voltage input terminal is respectively connected to the negative electrode of the first diode, one end of the first capacitor, one end of the second capacitor, and the VIN terminal of the LM2576S-5.0 power supply chip. The other end of the first diode is respectively connected to the other end of the first capacitor, the other end of the second capacitor, the EN terminal of the LM2576S-5.0 power supply chip, the GND terminal of the LM2576S-5.0 power supply chip, the positive electrode of the second diode, and one end of the third capacitor and grounded; the negative electrode of the second diode is respectively connected to the VOUT terminal of the LM2576S-5.0 power supply chip and one end of the first inductor. The other end of the first inductor is respectively connected to the other end of the third capacitor, the FB terminal of the LM2576S-5.0 power supply chip, and the 5V output terminal;

[0038] The 5V input terminal is respectively connected to one end of the fourth capacitor, the EN terminal of the TPS7A7001 power supply chip and the IN terminal of the TPS7A7001 power supply chip. The other end of the fourth capacitor is grounded. The GND terminal of the TPS7A7001 power supply chip is connected to one end of the first resistor. The other end of the first resistor is respectively connected to one end of the second resistor and the FB terminal of the TPS7A7001 power supply chip. The other end of the second resistor is respectively connected to one end of the fifth capacitor, the OUT terminal of the TPS7A7001 power supply chip, and the 3.3V output terminal. The other end of the fifth capacitor is grounded.

[0039] The power supply module uses a power supply conversion circuit for power control, with stable output voltage and high conversion accuracy.

[0040] Only some exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic cleaning system, characterized in that: It includes two parts: the cleaning robot control system for photovoltaic modules and the server center control system; the cleaning robot control system for photovoltaic modules communicates with the server center system through a LoRaWAN gateway for long-distance radio frequency communication; The cleaning robot control system for photovoltaic modules includes a main control system and a cleaning robot control system; the cleaning robot control system includes a controller module, a motor driver, a DC motor, a transmission module, a LoRa module, and a power supply module; The output end of the controller module is connected to the input end of the motor driver, the output end of the motor driver is connected to the input end of the DC motor, and the output end of the DC motor is connected to the input end of the transmission module; the controller module is connected to the LoRa module; The power supply module includes a photovoltaic panel, an anti-backflow voltage stabilizing circuit, a storage battery, and a power supply conversion unit. The photovoltaic panel is connected to the storage battery through the anti-backflow voltage stabilizing circuit, and the storage battery is connected to the controller module through the power supply conversion unit.

2. The photovoltaic cleaning system according to claim 1, wherein: The motor driver includes a motor driver U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, and a DC motor M1. Among them, pin 1, pin 15, and pin 8 of the motor driver U4 are grounded. One end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC terminal of the motor driver U4, and the other end of the capacitor C6 is grounded. One end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor driver U4, and the positive pole of the diode D2. The other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor driver U4. Pin 13 of the motor driver U4 is respectively connected to the positive pole of the diode D3, one end of the capacitor C7, and one end of the DC motor M2. Pin 14 of the motor driver U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2. The negative pole of the diode D2 is grounded, and the negative pole of the diode D3 is grounded.

3. A photovoltaic cleaning system according to claim 1, characterized in that: The controller module uses a 32-bit embedded microcontroller chip.

4. A photovoltaic cleaning system according to claim 1, wherein: The anti-backflow voltage stabilizing circuit includes a voltage input Vin terminal, a capacitor C1, a capacitor C2, a chip LM2596, an inductor L1, a diode D31, a diode D4, and a voltage output Vout terminal. The voltage input Vin terminal is respectively connected to one end of the capacitor C1 and the +VIN pin of the chip LM2596. The other end of the capacitor C1 is grounded. The GND pin of the chip LM2596 is grounded. The ON / OFF pin of the chip LM2596 is grounded. The OUTPUT pin of the chip LM2596 is respectively connected to one end of the inductor L1 and the cathode of the diode D31. The FEEDBACK pin of the chip LM2596 is respectively connected to the other end of the inductor L1, the anode of the diode D4, and one end of the capacitor C2. The other end of the capacitor C2 is grounded. The anode of the diode D31 is grounded. The cathode of the diode D4 is connected to the voltage output Vout terminal.

5. A photovoltaic cleaning system according to claim 1, wherein: The power supply conversion unit includes a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a first voltage output terminal, a first voltage input terminal, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor, and a second voltage output terminal; The DC12V voltage input terminal is respectively connected to the negative electrode of the first diode, one end of the first capacitor, one end of the second capacitor, and the VIN terminal of the LM2576S-5.0 power supply chip. The other end of the first diode is respectively connected to the other end of the first capacitor, the other end of the second capacitor, the EN terminal of the LM2576S-5.0 power supply chip, the GND terminal of the LM2576S-5.0 power supply chip, the positive electrode of the second diode, and one end of the third capacitor and is grounded; The negative electrode of the second diode is respectively connected to the VOUT terminal of the LM2576S-5.0 power supply chip and one end of the first inductor. The other end of the first inductor is respectively connected to the other end of the third capacitor, the FB terminal of the LM2576S-5.0 power supply chip, and the 5V output terminal; The 5V input terminal is respectively connected to one end of the fourth capacitor, the EN terminal of the TPS7A7001 power supply chip, and the IN terminal of the TPS7A7001 power supply chip. The other end of the fourth capacitor is grounded. The GND terminal of the TPS7A7001 power supply chip is connected to one end of the first resistor. The other end of the first resistor is respectively connected to one end of the second resistor and the FB terminal of the TPS7A7001 power supply chip. The other end of the second resistor is respectively connected to one end of the fifth capacitor, the OUT terminal of the TPS7A7001 power supply chip, and the 3.3V output terminal. The other end of the fifth capacitor is grounded.

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