Attenuation repairing equipment and method for metastable-state outdoor photovoltaic module

Abstract

Compared with a common light injection technology, an LED lamp set is used for generating ultraviolet light with the fixed wavelength of 365 nm-UVA and the irradiation intensity of 200 W / m < 2 >, and through the ultraviolet photon instantaneous injection repairing technology, the attenuation of the metastable-state outdoor photovoltaic module can be restored, and the attenuation of the metastable-state outdoor photovoltaic module can be restored. The photoelectric conversion efficiency, the open-circuit voltage and the fill factor of the photovoltaic module are improved to a certain extent after the photovoltaic module is subjected to ultraviolet treatment for about 10 seconds; dynamic surface cleaning is implemented through a brush, and meanwhile dirt removal and heat management are completed through cooperation of a fan; the attenuation repairing equipment is high in environmental adaptability and is also suitable for the environment with serious wind and sand, surface cleanliness improvement and operation temperature control of the photovoltaic module are synchronously achieved, and safety and reliability of repairing operation are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic component maintenance, and in particular to an attenuation repair device and a repair method for a metastable outdoor photovoltaic component. Background Art

[0002] Photovoltaic modules, the core component of photovoltaic systems, convert sunlight into electricity. Solar energy has garnered widespread attention as a clean, renewable energy source. PV modules consist of multiple solar cells connected in series and parallel, encapsulated in a protective frame and glass cover for practical application.

[0003] However, when photovoltaic modules are exposed to sunlight for a long time, they are exposed to ultraviolet light. High-energy photons break the Si-H bonds within the cells, releasing hydrogen atoms and forming defects such as dangling bonds. This leads to a decrease in carrier mobility and an increase in the recombination rate, ultimately causing module efficiency to decline. In large-scale tests, 40% of modules exhibited a power reduction of 5% or more, which has been proven to be repairable through visible light injection.

[0004] In addition, the performance of photovoltaic modules in a dark environment without light gradually declines over time, which is called dark-state degradation. At this time, the modules are in a metastable state. Compared with the impact of long-term ultraviolet radiation on solar cells and modules, short-term ultraviolet light treatment can repair this degradation and restore module efficiency. However, the existing technology does not have equipment and detailed methods for continuous attenuation repair.

[0005] Therefore, it is necessary to develop an attenuation repair device and repair method for metastable outdoor photovoltaic modules to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to design an attenuation repair device and repair method for metastable outdoor photovoltaic modules in order to solve the above problems.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions: A metastable outdoor photovoltaic module attenuation repair device, comprising: Upper ultraviolet light injection device; the upper ultraviolet light injection device includes a quantum resonant light field coupling generator, a support plate, and a power supply device. A mounting hole is provided in the middle of the support plate, and the quantum resonant light field coupling generator is installed in the mounting hole. Four air inlet holes are provided on the long side of the support plate, and a fan is fixedly installed in each air inlet hole. The fan and the quantum resonant light field coupling generator are both connected to the power supply device, and the power supply device is fixedly mounted on the top of the support plate; Two sets of intermediate connecting parts; the intermediate connecting parts include a stepper motor, a driving gear, two driven gears, two bearings, and two adjustable screws. Two through holes are opened on the top of the protective cover. The stepper motor and the two bearings are fixedly installed in the protective cover. The rotating shaft of the stepper motor is connected to the driving gear. The inner rings of the two bearings are respectively mounted on the two adjustable screws. The lower ends of the two adjustable screws are respectively connected to the two driven gears. The two driven gears are meshed with the driving gear. The two adjustable screws are parallel to each other. A screw hole is vertically provided at each of the four corners of the support plate. The two adjustable screws pass through the two through holes upward and then engage with the two screw holes on the support plate. Two sets of lower end moving devices; the lower end moving devices include guide rails, a moving base, an inner slider, an outer slider, a servo motor, a transmission shaft, a driving wheel, and a protective cover. The servo motor is fixedly installed in the protective cover, the moving base is installed below the protective cover, the rotating shaft of the servo motor is connected to the upper end of the transmission shaft, and the lower end of the transmission shaft passes through the protective cover and the moving base and is connected to the driving wheel. A rolling groove is provided on the inner side wall of the guide rail, and the driving wheel is rotatably installed in the rolling groove; the inner slider and the outer slider are respectively installed on the inner and outer sides of the moving base; the outer slider is attached to the outer side of the guide rail; the two guide rails of the two sets of lower end moving devices are arranged parallel to each other, and the two guide rails are respectively installed on both sides of the photovoltaic module; A cleaning device for cleaning the surface of a photovoltaic module; the cleaning device is installed between two moving bases of two sets of lower end moving devices.

[0008] Specifically, the cleaning device includes a brush, a connecting rod, and two mounting seats. The brush is installed on the connecting rod. Two mounting seats are respectively provided at both ends of the connecting rod. The two mounting seats are respectively installed on the outer side walls of the two inner sliding blocks.

[0009] Specifically, the fan includes a drive motor and fan blades. The rotating shaft of the drive motor is connected to the fan blades. The drive motor is installed in the air inlet through a bracket. The upper end of the air inlet is the air inlet, and the lower end is the air outlet.

[0010] Specifically, the power supply device includes a microcontroller, an energy storage module, and a circuit board. The attenuation repair device also includes a control module, a display device, a first wireless transmitter, a first wireless receiver, a second wireless transmitter, a displacement sensor, a height sensor, and a temperature sensor. The displacement sensor is installed on the inner slider, the height sensor is installed on the support plate, and the temperature sensor and the first wireless receiver are respectively located on both sides of the quantum resonant light field coupling generator and placed at the bottom of the support plate; the first wireless receiver is connected to the microcontroller, the microcontroller is connected to the second wireless transmitter, the second wireless transmitter is installed on the top of the support plate, the second wireless transmitter is wirelessly communicated with the second wireless receiver in the display device, the microcontroller is also connected to the energy storage module, the energy storage module is respectively connected to the circuit board and the drive motor of the fan, the display device is connected to the first wireless transmitter, the first wireless transmitter is wirelessly communicated with the first wireless receiver, and the control module is respectively connected to the microcontroller, the displacement sensor, the height sensor, the temperature sensor, the servo motor, and the stepper motor.

[0011] Specifically, the quantum resonant light field coupling generator includes multiple LED light groups, a cylindrical collimating lens and a diffuse reflection plate. The multiple LED light groups are distributed in a rectangular array with an aspect ratio of 5:1. The cylindrical collimating lens is arranged below the LED light group, and the diffuse reflection plate is arranged below the cylindrical collimating lens.

[0012] Specifically, each set of intermediate connecting parts also includes two limiting nuts, which are respectively matched with the threads of the two adjustable screws, and the limiting nuts are placed below the support plate.

[0013] A method for repairing attenuation repair equipment for metastable outdoor photovoltaic modules, comprising the following steps: S1. Bolts pass through the buckle holes on the guide rail and screw into the mounting bracket to fix the position of the guide rail. The buckle holes are countersunk holes. S2. Preparation before repair: S2.1. A staff member holds a handheld display device and sets the distance between the support plate and the photovoltaic module to 10 cm. A first wireless transmitter remotely sends a command, which is received by the first wireless receiver and sent to the microcontroller. The microcontroller controls the energy storage module to power the stepper motor. The stepper motor drives the driving gear to rotate, which in turn drives the driven gear to rotate synchronously. The driven gear drives the adjustable screw to rotate. The adjustable screw engages with the support plate, causing the support plate to move up and down. The height sensor detects the change in the support plate's height in real time. When the support plate reaches the appropriate height, the stepper motor stops. S2.2. Set the speed of the lower moving device to 5cm / s and the irradiation intensity of the LED light group to 200W / m through the display device. 2 , operating temperature ≤ 50℃, equipment moving distance, command issued by the first wireless transmitter; S3, UV photon transient injection repair: S3.1. The first wireless receiver on the device receives the command, and the servo motor starts running. The servo motor drives the transmission shaft and drive wheel to rotate. The drive wheel and the rolling groove roll together, driving the mobile base and the structure on it to move horizontally on the guide rail at a speed of 5 cm / s. S3.2. While the lower moving device is moving, the microcontroller controls the circuit board so that the LED light group emits a fixed UV radiation intensity of 200W / m 2 , the wavelength is 365nm-UVA ultraviolet light, the optical axis of the cylindrical collimating lens on the light-emitting side of the light source coincides with the Y-axis direction of the ultraviolet light, completing the Y-direction collimation of the ultraviolet light, and then the linear microprism array on the diffuse reflection plate on the light-emitting side of the collimating lens diffuses the ultraviolet light in one direction, completing the diffuse expansion of the ultraviolet light source in the X direction, forming a rectangular light spot with the long side along the X-axis and the short side along the Y-axis. When the repair equipment slides along the surface of the photovoltaic module at a speed of 5cm / s, the LED light group continues to emit light, forming a rectangular light band covering the track; S4. Synchronous auxiliary work: S4.1. While the lower moving device is moving, the brush cleans the surface of the photovoltaic module through sliding friction; S4.2. The temperature sensor at the bottom of the support plate collects the operating temperature of the PV panel surface and the attenuation repair equipment. The control module processes this temperature and issues a temperature adjustment command. The microcontroller receives the command and adjusts the rotation of the drive motor. The drive motor drives the fan blades to generate a strong airflow. Combined with the directional guidance of the air inlet, this simultaneously achieves forced convection cooling and airflow purge and cleans, thereby reducing the operating temperature of the PV panel surface and the attenuation repair equipment. S4.3. A second wireless transmitter on top of the support plate collects operating data of the attenuation repair device and feeds it back to the display device; S4.4. The displacement sensor of the inner slider monitors the moving distance of the inner slider in real time. When it reaches the last photovoltaic module, the displacement sensor sends the position information to the control module, which then edits and processes it and issues a stop command. The microcontroller controls the servo motor to reduce its speed until it stops.

[0014] Furthermore, the length and width of the quantum resonant light field coupling generator are one of 500mm*1134mm, 500mm*1303mm, 500mm*1008mm and 500mm*1000mm, and the length of the quantum resonant light field coupling generator is the same as the width of the photovoltaic module.

[0015] Furthermore, in S3, the UV photon transient injection repair process is performed in a dark environment.

[0016] The beneficial effects of the present invention are: 1. Compared with traditional light injection technology, this invention uses a special LED lamp group to generate 365nm-UVA ultraviolet light and stably maintain an irradiation intensity of 200W / m². The ultraviolet photon instantaneous injection repair technology based on this construction breaks through the dual bottlenecks of conventional treatment in terms of time and effect. The core advantage is that it only takes 10 seconds to perform UV treatment on photovoltaic modules, and its photoelectric conversion efficiency (ETA) and open circuit voltage (V oc ) can improve the fill factor (FF). Conventional light injection technology, even at a high irradiance of 1000W / m², requires processing time of up to 5 hours to achieve corresponding electrical performance optimization. Therefore, this invention not only shortens the processing cycle to seconds, significantly improving processing efficiency, but also far surpasses traditional technologies in terms of performance optimization. This effectively solves the industry challenges of low efficiency and time-consuming photovoltaic module performance improvement, while significantly reducing equipment investment and power consumption costs.

[0017] 2. The present invention mainly consists of three parts: an upper ultraviolet light injection device, an intermediate connecting part, and a lower moving device. It is easy to install and disassemble, convenient to transport, and has good portability. At the same time, by controlling the lighting conditions of the LED lamp group, the distance between the support plate and the photovoltaic component, and other working conditions, the device can be directly applied to different components, and has good versatility.

[0018] 3. The present invention combines a lower moving device with an upper ultraviolet light injection device to directly achieve sliding operations on the surface of installed components without disassembling the components, making it suitable for on-site repairs during the operation and maintenance phase. At the same time, the transient characteristics make the equipment suitable for large-scale maintenance of large power stations. Dynamic scanning is achieved through uniform sliding, and the light spot trajectory covers the entire component surface. The LED light group in the quantum resonant light field coupling generator is combined with the optical lens design of "collimating lens + diffuse reflection plate" to achieve a rectangular light spot, which can ensure a uniformity error of less than 5% (traditional equipment may be more than 10%), avoiding local over- or under-illumination. The device can present the device working status to the display device in real time through wireless transmission equipment, record the sliding trajectory, movement rate, and component temperature, and realize remote management. 4. The present invention addresses the issues of dirt on the glass surface of outdoor photovoltaic modules and the operating temperature of the equipment. It uses a brush to dynamically clean the surface and relies on a fan to collaboratively complete dirt removal and heat management. The attenuation repair equipment has strong environmental adaptability, making it also suitable for environments with severe wind and sand. It can simultaneously improve the cleanliness of the photovoltaic module surface and control the operating temperature, ensuring the safety and reliability of the repair operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural block diagram of the attenuation repair device for metastable outdoor photovoltaic modules in the present invention; Figure 2This is a schematic structural diagram of the attenuation repair device for metastable outdoor photovoltaic modules in the present invention; Figure 3 Schematic diagram of the structure of the upper ultraviolet light injection device in the present invention; Figure 4 is a schematic structural diagram of the lower end moving device of the present invention (partial perspective view); Figure 5 is a light path diagram of the ultraviolet light source in the present invention; Figure 6 The diagram shows the normalized change curve of the performance of the repaired module of the present invention, where A is the normalized change of the photoelectric conversion efficiency (ETA) of the TOPCon module under different UV irradiation times, and B is the open circuit voltage (V OC ) normalized change, C is the normalized change of TOPCon module fill factor (FF) under different UV irradiation time, and D is the short-circuit current (I SC ) normalized changes.

[0020] The accompanying drawings are marked as follows: 1. quantum resonant light field coupling generator; 2. support plate; 3. air inlet; 4. fan; 5. power supply device; 6. guide rail; 7. mobile base; 8. inner slider; 9. outer slider; 10. servo motor; 11. stepper motor; 12. driving gear; 13. driven gear; 14. bearing; 15. transmission shaft; 16. driving wheel; 17. protective cover; 18. through hole; 19. adjustable screw; 20. limit nut; 21. control module; 22. Display device; 23. First wireless transmitter; 24. First wireless receiver; 25. Second wireless transmitter; 26. Displacement sensor; 27. Height sensor; 28. Temperature sensor; 29. ​​LED light group; 30. Cylindrical collimating lens; 31. Diffuse reflection plate; 32. Drive motor; 33. Fan blades; 34. Air outlet; 35. Microcontroller; 36. Energy storage module; 37. Circuit board; 38. Snap hole; 39. Mounting base; 40. Brush; 41. Microprism. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also mean internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, a metastable outdoor photovoltaic module attenuation repair device includes: Upper end ultraviolet light injection device; the upper end ultraviolet light injection device includes a quantum resonant light field coupling generator 1, a support plate 2, and a power supply device 5. A mounting hole is provided in the middle of the support plate 2, and the quantum resonant light field coupling generator 1 is installed in the mounting hole. Four air inlet holes are provided on the long side of the support plate 2, and a fan 4 is fixedly installed in each air inlet hole. The fan 4 and the quantum resonant light field coupling generator 1 are both connected to the power supply device 5, and the power supply device 5 is fixedly mounted on the top of the support plate 2; Two sets of intermediate connecting parts; the intermediate connecting part includes a stepping motor 11, a driving gear 12, two driven gears 13, two bearings 14, and two adjustable screws 19. Two through holes 18 are provided on the top of the protective cover 17. The stepping motor 11 and the two bearings 14 are fixedly installed in the protective cover 17. The rotating shaft of the stepping motor 11 is connected to the driving gear 12. The inner rings of the two bearings 14 are respectively mounted on the two adjustable screws 19. The lower ends of the two adjustable screws 19 are respectively connected to the two driven gears 13. The two driven gears 13 are meshed with the driving gear 12. The two adjustable screws 19 are parallel to each other. A screw hole is vertically provided at each of the four corners of the support plate 2. The two adjustable screws pass through the two through holes 18 upward and then threadedly engage with the two screw holes on the support plate 2. Two groups of lower end moving devices; the lower end moving device includes a guide rail 6, a moving base 7, an inner slider 8, an outer slider 9, a servo motor 10, a transmission shaft 15, a driving wheel 16, and a protective cover 17. The servo motor 10 is fixedly installed in the protective cover 17, and the moving base 7 is installed below the protective cover 17. The rotating shaft of the servo motor 10 is connected to the upper end of the transmission shaft 15, and the lower end of the transmission shaft 15 passes through the protective cover 17 and is connected to the driving wheel 16 after being connected to the moving base 7. A rolling groove is provided on the inner side wall of the guide rail 6, and the driving wheel 16 is rotatably installed in the rolling groove; the inner slider 8 and the outer slider 9 are respectively installed on the inner and outer sides of the moving base 7; the outer slider 9 is attached to the outer side of the guide rail 6; the two guide rails 6 of the two groups of lower end moving devices are arranged parallel to each other, and the two guide rails 6 are respectively installed on both sides of the photovoltaic module; the cooperation between the outer slider and the outer side of the guide rail serves to constrain the moving direction of the lower end moving device; A cleaning device for cleaning the surface of a photovoltaic module; the cleaning device is installed between two movable bases 7 of two sets of lower end movable devices.

[0029] When the lower end moving device moves, the servo motor 10 operates, driving the drive wheel 16 via the transmission shaft 15. The drive wheel 16 then rolls within the rolling groove of the guide rail 6, driving the lower end moving device to move. When the intermediate connecting portion operates, the stepper motor 11 operates to drive the driving gear 12 to rotate. The driving gear 12 drives the two driven gears 13 to rotate. The driven gears 13 drive the adjustable screw 19 to rotate. Because the adjustable screw 19 is fixed in position by a bearing and is rotatably mounted, and because the adjustable screw 19 is threadedly engaged with the support plate 2, and because the support plate 2 cannot rotate circumferentially, the support plate 2 moves upward.

[0030] like Figure 2 As shown, the cleaning device includes a brush 40, a connecting rod, and two mounting seats 39. The brush 40 is installed on the connecting rod. Two mounting seats 39 are respectively provided at both ends of the connecting rod. The two mounting seats 39 are respectively installed on the outer side walls of the two inner sliders 8.

[0031] like Figure 2 and 3 As shown, the fan 4 includes a drive motor 32 and fan blades 33. The rotating shaft of the drive motor 32 is connected to the fan blades. The drive motor 32 is installed in the air inlet through a bracket. The upper end of the air inlet is the air inlet 3, and the lower end is the air outlet 34.

[0032] like Figure 1-2 As shown, the power supply device 5 includes a microcontroller 35, an energy storage module 36, and a circuit board 37. The attenuation repair device also includes a control module 21, a display device 22, a first wireless transmitter 23, a first wireless receiver 24, a second wireless transmitter 25, a displacement sensor 26, a height sensor 27, and a temperature sensor 28. The displacement sensor 26 is installed on the inner slider 8, the height sensor 27 is installed on the support plate 2, and the temperature sensor 28 and the first wireless receiver 24 are respectively located on both sides of the quantum resonant light field coupling generator 1 and placed at the bottom of the support plate 2; the first wireless receiver 24 is connected to the microcontroller 35, and the microcontroller 3 5 is connected to the second wireless transmitter 25, which is mounted on the top of the support plate 2 and wirelessly communicates with the second wireless receiver in the display device 22. The microcontroller 35 is also connected to the energy storage module 36, which is respectively connected to the circuit board 37 and the drive motor 32 of the fan 4. The display device 22 is connected to the first wireless transmitter 23, which is wirelessly communicated with the first wireless receiver 24. The control module 21 is respectively connected to the microcontroller 35, the displacement sensor 26, the height sensor 27, the temperature sensor 28, the servo motor 10, and the stepper motor 11. The energy storage module 36 provides power to each non-mobile end power-consuming device.

[0033] like Figure 5 As shown, the quantum resonant light field coupling generator includes multiple LED light groups 29, a cylindrical collimating lens 30 and a diffuse reflection plate 31. The multiple LED light groups 29 are distributed in a rectangular array, and the length-to-width ratio of the rectangular array is 5:1. The cylindrical collimating lens 30 is arranged below the LED light group 29, and the diffuse reflection plate 31 is arranged below the cylindrical collimating lens 30.

[0034] like Figure 2 As shown, each set of intermediate connecting parts further includes two limiting nuts 20 , which are respectively threadedly engaged with the two adjustable screws 19 , and the limiting nuts 20 are placed below the support plate 2 .

[0035] like Figure 1-5 As shown, a method for repairing a metastable outdoor photovoltaic module attenuation repair device specifically includes the following steps: S1. The bolt passes through the buckle hole 38 on the guide rail 6 and is screwed into the mounting bracket to fix the position of the guide rail 6. The buckle hole is a countersunk hole; S2. Preparation before repair: S2.1. A staff member holds a handheld display device 22 and sets the distance between the support plate 2 and the photovoltaic module to 10 cm. The first wireless transmitter 23 remotely sends a command, which is received by the first wireless receiver 24 and sent to the microcontroller 35. The microcontroller 35 controls the energy storage module 36 to power the stepper motor 11. The stepper motor 11 drives the driving gear 12 to rotate, and the driving gear 12 drives the driven gear 13 to rotate synchronously. The driven gear 13 drives the adjustable screw 19 to rotate. The adjustable screw 19 meshes with the support plate 2, so the support plate 2 moves up and down. The height sensor 27 detects the height change of the support plate 2 in real time. When the height reaches the appropriate height, the stepper motor 11 stops. S2.2, through the display device 22, set the moving speed of the lower end moving device to 5cm / s and the irradiation intensity of the LED light group 29 to 200W / m 2 , operating temperature ≤ 50°C, device moving distance, the first wireless transmitter 23 sends a command; S3, UV photon transient injection repair: S3.1. The first wireless receiver 24 on the device receives the command, and the servo motor 10 starts running. The servo motor 10 drives the transmission shaft 15 and the drive wheel 16 to rotate. The drive wheel 16 engages the rolling groove, driving the mobile base 7 and the structure thereon to move horizontally on the guide rail 6 at a speed of 5 cm / s. S3.2, while the lower moving device is moving, the microcontroller 35 controls the circuit board 37 so that the LED lamp group 29 emits a fixed ultraviolet radiation intensity of 200W / m 2 , the wavelength is 365nm-UVA ultraviolet light, the optical axis of the cylindrical collimating lens 30 on the light-emitting side of the light source coincides with the Y-axis direction of the ultraviolet light, completing the Y-direction collimation of the ultraviolet light, and then the linear microprism 41 array on the diffuse reflection plate 31 on the light-emitting side of the collimating lens 30 diffuses the ultraviolet light in one direction, completing the diffuse expansion of the ultraviolet light source in the X direction, forming a rectangular light spot with the long side along the X-axis and the short side along the Y-axis. When the repair equipment slides along the surface of the photovoltaic module at a speed of 5cm / s, the LED lamp group 29 continues to emit light, forming a rectangular light band covering the track.

[0036] S4. Synchronous auxiliary work: S4.1. While the lower moving device is moving, the brush 40 cleans the surface of the photovoltaic module through sliding friction; S4.2. Temperature sensor 28 at the bottom of support plate 2 collects the operating temperature of the PV panel surface and the attenuation repair equipment. This temperature is processed by control module 21 and a temperature adjustment command is issued. Microcontroller 35 receives the command and adjusts the rotation of drive motor 32. Drive motor 32 drives fan blades 33 to rotate, creating a strong airflow. Combined with the directional guidance of the air inlet, this simultaneously achieves forced convection heat dissipation and airflow purge and cleaning, thereby reducing the operating temperature of the PV panel surface and the attenuation repair equipment. S4.3. The second wireless transmitter 25 on the top of the support plate 2 collects the working data of the attenuation repair device and feeds it back to the display device 22; S4.4. The displacement sensor 26 of the inner slider 8 monitors the movement distance of the inner slider 8 in real time. When it reaches the last photovoltaic module, the displacement sensor 26 sends the position information to the control module 21. The control module 21 then edits and processes it and issues a stop command. The microcontroller 35 controls the servo motor 10 to reduce its speed until it stops.

[0037] In some embodiments, the length and width of the quantum resonant light field coupling generator 1 are one of 500mm*1134mm, 500mm*1303mm, 500mm*1008mm and 500mm*1000mm, and the length of the quantum resonant light field coupling generator 1 is the same as the width of the photovoltaic module.

[0038] In some embodiments, in S3, the UV photon transient injection repair process is performed in a dark environment to avoid interference of sunlight on the UV light source and better repair the dark-state attenuation of the component at night.

[0039] In some embodiments, as shown in the attached Figure 6 As shown in the figure, when the repair equipment passes through the TOPCon photovoltaic module at a constant speed of 5cm / s, the average irradiation intensity of each area on the front of the module is 200W / m after 10s. 2 After irradiation with ultraviolet light of wavelength 365nm-UVA, ETA increased by an average of 1.5%, V OC The average improvement is 0.24%, and the average FF improvement is 1.1%. At the same time, the 10s irradiation time corresponding to the moving speed of 5cm / s is the optimal. As time delays, the component efficiency decreases.

[0040] In this application: the upper repair device emits a radiant intensity of 200W / m through the LED lamp group 29 2 , ultraviolet light with a wavelength of UVA-365nm is used for ultraviolet photon injection repair. The middle connecting part completes the 10cm distance adjustment between the upper end repair device and the surface of the photovoltaic module, and the lower end moving device realizes 5cm / s translation movement; When performing ultraviolet photon instantaneous injection repair, the worker holds the display device 22 and remotely issues the above work instructions through the first wireless transmitter 23 of the display device 22. Multiple tasks are carried out simultaneously. At the same time, the second wireless transmitter 25 on the device side collects the device working status in real time and feeds it back to the display device 22. After the equipment stops working, the staff can take out the energy storage module 36 separately for charging.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A metastable outdoor photovoltaic module attenuation repair device, characterized in that: include: An upper ultraviolet light injection device; the upper ultraviolet light injection device comprises a quantum resonant light field coupling generator (1), a support plate (2), and a power supply device (5); a mounting hole is provided in the middle of the support plate (2); the quantum resonant light field coupling generator (1) is installed in the mounting hole; four air inlet holes are provided on the long side of the support plate (2); a fan (4) is fixedly installed in each air inlet hole; the fan (4) and the quantum resonant light field coupling generator (1) are both connected to the power supply device (5); and the power supply device (5) is fixedly installed on the top of the support plate (2); Two sets of intermediate connecting parts; the intermediate connecting parts include a stepper motor (11), a driving gear (12), two driven gears (13), two bearings (14), and two adjustable screws (19). Two through holes (18) are provided on the top of the protective cover (17). The stepper motor (11) and the two bearings (14) are fixedly installed in the protective cover (17). The rotating shaft of the stepper motor (11) is connected to the driving gear (12). The inner rings of the two bearings (14) are respectively mounted on the two adjustable screws (19). The lower ends of the two adjustable screws (19) are respectively connected to the two driven gears (13). The two driven gears (13) are meshed with the driving gear (12). The two adjustable screws (19) are parallel to each other. A screw hole is vertically provided at each of the four corners of the support plate (2). The two adjustable screws pass through the two through holes (18) upwards and then engage with the two screw holes on the support plate (2). Two sets of lower end moving devices; the lower end moving devices include a guide rail (6), a moving base (7), an inner slider (8), an outer slider (9), a servo motor (10), a transmission shaft (15), a driving wheel (16), and a protective cover (17); the servo motor (10) is fixedly installed in the protective cover (17); the moving base (7) is installed below the protective cover (17); the rotating shaft of the servo motor (10) is connected to the upper end of the transmission shaft (15); the lower end of the transmission shaft (15) passes through the protective cover (17) and is connected to the moving base (7) and the driving wheel (16); a rolling groove is provided on the inner side wall of the guide rail (6); the driving wheel (16) is rotatably installed in the rolling groove; the inner slider (8) and the outer slider (9) are respectively installed on the inner and outer sides of the moving base (7); the outer slider (9) is attached to the outer side of the guide rail (6); the two guide rails (6) of the two sets of lower end moving devices are arranged parallel to each other, and the two guide rails (6) are respectively installed on both sides of the photovoltaic module; A cleaning device for cleaning the surface of a photovoltaic module; the cleaning device is installed between two movable bases (7) of two sets of lower end movable devices.

2. The attenuation repair device for metastable outdoor photovoltaic modules according to claim 1, characterized in that: The cleaning device comprises a brush (40), a connecting rod, and two mounting seats (39). The brush (40) is mounted on the connecting rod. Two mounting seats (39) are respectively provided at both ends of the connecting rod. The two mounting seats (39) are respectively mounted on the outer side walls of the two inner sliders (8).

3. The attenuation repair device for metastable outdoor photovoltaic modules according to claim 1, characterized in that: The fan (4) includes a drive motor (32) and fan blades (33). The rotating shaft of the drive motor (32) is connected to the fan blades. The drive motor (32) is installed in the air inlet through a bracket. The upper end of the air inlet is the air inlet (3), and the lower end is the air outlet (34).

4. The attenuation repair device for metastable outdoor photovoltaic modules according to claim 3, characterized in that: The power supply device (5) includes a microcontroller (35), an energy storage module (36), and a circuit board (37). The attenuation repair device also includes a control module (21), a display device (22), a first wireless transmitter (23), a first wireless receiver (24), a second wireless transmitter (25), a displacement sensor (26), a height sensor (27), and a temperature sensor (28). The displacement sensor (26) is mounted on the inner slider (8), the height sensor (27) is mounted on the support plate (2), the temperature sensor (28) and the first wireless receiver (24) are respectively located on both sides of the quantum resonant light field coupling generator (1) and are placed at the bottom of the support plate (2); the first wireless receiver (24) is connected to the microcontroller (35), and the microcontroller (35) is connected to the microcontroller (35). ) is connected to the second wireless transmitter (25), the second wireless transmitter (25) is installed on the top of the support plate (2), the second wireless transmitter (25) is wirelessly connected to the second wireless receiver in the display device (22), the microcontroller (35) is also connected to the energy storage module (36), the energy storage module (36) is respectively connected to the circuit board (37) and the drive motor (32) of the fan (4), the display device (22) is connected to the first wireless transmitter (23), the first wireless transmitter (23) is wirelessly connected to the first wireless receiver (24), and the control module (21) is respectively connected to the microcontroller (35), the displacement sensor (26), the height sensor (27), the temperature sensor (28), the servo motor (10), and the stepper motor (11).

5. The attenuation repair device for metastable outdoor photovoltaic modules according to claim 1, characterized in that: The quantum resonant light field coupling generator comprises a plurality of LED light groups (29), a cylindrical collimating lens (30) and a diffuse reflection plate (31), wherein the plurality of LED light groups (29) are distributed in a rectangular array, and the aspect ratio of the rectangular array is 5:1, the cylindrical collimating lens (30) is arranged below the LED light group (29), and the diffuse reflection plate (31) is arranged below the cylindrical collimating lens (30).

6. The attenuation repair device for metastable outdoor photovoltaic modules according to claim 1, characterized in that: Each set of intermediate connection parts further includes two limiting nuts (20), the two limiting nuts (20) are respectively threadedly engaged with the two adjustable screws (19), and the limiting nuts (20) are placed below the support plate (2).

7. A method for repairing a metastable outdoor photovoltaic module attenuation repair device according to any one of claims 1 to 6, characterized in that: The specific steps include: S1. The bolt passes through the buckle hole (38) on the guide rail (6) and is screwed into the mounting bracket to fix the position of the guide rail (6). The buckle hole is a countersunk hole; S2. Preparation before repair: S2.

1. The staff member holds a handheld display device (22) and sets the distance between the support plate (2) and the photovoltaic module to 10 cm. The first wireless transmitter (23) remotely sends a command, the first wireless receiver (24) receives the command, and sends the command to the microcontroller (35). The microcontroller (35) controls the energy storage module (36) to power the stepper motor (11). The stepper motor (11) drives the driving gear (12) to rotate, the driving gear (12) drives the driven gear (13) to rotate synchronously, and the driven gear (13) drives the adjustable screw (19) to rotate. The adjustable screw (19) is engaged with the support plate (2), so the support plate (2) moves up and down; the height sensor (27) detects the height change of the support plate (2) in real time, and when the height reaches the appropriate height, the stepper motor (11) stops rotating; S2.2, through the display device (22), set the moving speed of the lower end moving device to 5 cm / s and the irradiation intensity of the LED light group (29) to 200 W / m 2 , operating temperature ≤ 50°C, device moving distance, and instructions are issued by the first wireless transmitter (23); S3, UV photon transient injection repair: S3.

1. The first wireless receiver (24) at the device end receives the command, and the servo motor (10) starts to operate. The servo motor (10) drives the transmission shaft (15) and the driving wheel (16) to rotate. The driving wheel (16) and the rolling groove roll together, driving the mobile base (7) and the structure thereon to move horizontally on the guide rail (6) at a speed of 5 cm / s. S3.

2. While the lower moving device is moving, the microcontroller (35) controls the circuit board (37) so that the LED light group (29) emits a fixed ultraviolet radiation intensity of 200 W / m 2 , the wavelength is 365 nm-UVA ultraviolet light, the optical axis of the cylindrical collimating lens (30) on the light-emitting side of the light source coincides with the Y-axis direction of the ultraviolet light, completing the collimation of the ultraviolet light in the Y direction, and then the linear microprism (41) array on the diffuse reflection plate (31) on the light-emitting side of the collimating lens (30) diffuses the ultraviolet light in one direction, completing the diffusion expansion of the ultraviolet light source in the X direction, forming a rectangular light spot with the long side along the X axis and the short side along the Y axis. When the repair equipment slides along the surface of the photovoltaic module at a speed of 5 cm / s, the LED light group (29) continues to emit light, forming a rectangular light band covering the track; S4. Synchronous auxiliary work: S4.

1. While the lower end moving device is moving, the brush (40) cleans the surface of the photovoltaic module by sliding friction; S4.2, the temperature sensor (28) at the bottom of the support plate (2) collects the working temperature of the photovoltaic module surface and the attenuation repair equipment, edits and processes it through the control module (21), issues a temperature adjustment instruction, and the microcontroller (35) adjusts the rotation of the drive motor (32) after receiving the instruction. The drive motor (32) drives the fan blades (33) to rotate to form a strong airflow. Combined with the directional guidance of the air inlet hole, forced convection heat dissipation and airflow purge and cleaning are simultaneously achieved, thereby reducing the working temperature of the photovoltaic module surface and the attenuation repair equipment; S4.3, the second wireless transmitter (25) on the top of the support plate (2) collects the working data of the attenuation repair device and feeds it back to the display device (22); S4.4, the displacement sensor (26) of the inner slider (8) monitors the moving distance of the inner slider (8) in real time. When the inner slider (8) reaches the last photovoltaic module, the displacement sensor (26) sends the position information to the control module (21), and then the control module (21) performs editing and processing, issues a stop command, and the microcontroller (35) controls the servo motor (10) to reduce the speed until it stops.

8. The method for repairing a metastable outdoor photovoltaic module attenuation repair device according to claim 7, characterized in that: The length and width of the quantum resonant light field coupling generator (1) are one of 500mm*1134mm, 500mm*1303mm, 500mm*1008mm and 500mm*1000mm, and the length of the quantum resonant light field coupling generator (1) is the same as the width of the photovoltaic module.

9. The method for repairing a metastable outdoor photovoltaic module attenuation repair device according to claim 7, characterized in that: In S3, the UV photon transient injection repair process is carried out in a dark environment.

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