A photovoltaic power generation system with cooling, dust removal and snow removal functions

Abstract

The utility model discloses a kind of photovoltaic power generation systems with cooling, dust and snow removal function, realize walking mechanism and brush roller mechanism share motor.Photovoltaic power generation system includes spraying device and cleaning device, the cleaning device includes guide rail being arranged at the transverse two sides of photovoltaic module array, brush roller being arranged above photovoltaic module array, two motors being correspondingly arranged at the transverse two sides of brush roller, two transmission gears being correspondingly connected with the both ends of the roller shaft of brush roller, the guide rail is connected with rack, the motor is double-output shaft motor, and two output shafts are respectively connected with first gear and second gear, the first gear is engaged with rack, and the second gear is engaged with transmission gear.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to photovoltaic power generation systems. Background Technology

[0002] Numerous factors influence the power generation performance of photovoltaic (PV) power plants during actual operation, with the most significant being dust accumulation on the PV module surface, high module temperature, and snow accumulation on the PV module surface. Currently, industry solutions to these issues often involve simply periodically cleaning the PV modules and manually removing snow from their surfaces. High temperatures on the PV modules are typically managed through passive cooling by the natural environment.

[0003] Furthermore, existing devices for cleaning photovoltaic modules, when using brush rollers for cleaning, also require a traveling mechanism to drive the brush rollers along the surface of the photovoltaic modules. Both the traveling mechanism and the brush roller mechanism require separate motors for driving, increasing the number of motors and thus increasing costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical problem to be solved by this utility model is to provide a photovoltaic power generation system with cooling, dust removal and snow removal functions, which enables the walking mechanism and brush roller mechanism to share a motor, thereby reducing costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A photovoltaic power generation system with cooling, dust removal, and snow removal functions includes a photovoltaic support frame and a photovoltaic module array mounted on the photovoltaic support frame. The photovoltaic power generation system further includes:

[0007] A spraying device, comprising several nozzles disposed on both sides of the photovoltaic module array and water supply pipes connected to the nozzles, the spraying device having a cooling working mode and a dust removal working mode, the spraying device spraying the surface of the photovoltaic module through the nozzles to cool it down in the cooling working mode, and the spraying device spraying the surface of the photovoltaic module through the nozzles to remove dust in the dust removal working mode.

[0008] A cleaning device is provided to clean the surface of a photovoltaic module. The cleaning device includes guide rails on both sides of the photovoltaic module array, a brush roller above the photovoltaic module array, two motors on both sides of the brush roller, and two transmission gears connected to the two ends of the roller shaft of the brush roller. The guide rails are connected to racks. The motors are dual-output shaft motors, and the two output shafts are respectively connected to a first gear and a second gear. The first gear meshes with the rack, and the second gear meshes with the transmission gear.

[0009] A battery pack that supplies power to the motor.

[0010] Preferably, the guide rail has a groove extending along its length inside and a through slot communicating with the groove on its inner side, and the rack is located at the bottom of the groove.

[0011] Preferably, the upper part of the groove is provided with a limiting groove that cooperates with the axial sides of the first gear.

[0012] Preferably, the lower part of the groove is provided with a positioning groove for mounting the rack.

[0013] Preferably, the two ends of the brush roller shaft are rotatably supported on the brush roller support, and the motor is mounted on the brush roller support.

[0014] Preferably, the brush roller support includes a base plate and a support plate perpendicular to the base plate, the motor is mounted on the base plate, and the roller shaft is rotatably supported on the support plate.

[0015] Preferably, the photovoltaic support includes an inclined beam, a column supported below the inclined beam, and a crossbeam vertically and intersectingly fixed to the inclined beam, with the guide rail vertically and intersectingly welded and fixed to the end of the crossbeam.

[0016] Preferably, the photovoltaic power generation system further includes a sensor assembly for monitoring the photovoltaic modules, the sensor assembly including an infrared camera for real-time monitoring of the photovoltaic module temperature.

[0017] Preferably, the sensor assembly further includes a rain and snow sensor that automatically senses rain and snow weather.

[0018] Preferably, the photovoltaic power generation system further includes a control box, which is connected to sensor components, a spray device, a cleaning device, and a battery pack; and / or, the battery pack is connected to the photovoltaic module array.

[0019] The present invention adopts the above technical solution and has the following beneficial effects:

[0020] 1. The photovoltaic power generation system of this utility model integrates a spray device and a cleaning device, and has the functions of cooling, dust removal and snow removal.

[0021] The spray system features both a cooling mode and a dust removal mode. It can monitor the temperature of the photovoltaic modules in real time and, when the module temperature becomes too high, activate the cooling mode to spray the module surface with water, thus improving power generation performance. Conversely, in sunny weather, if cleaning is required, the spray system can switch to a dust removal mode. In this mode, the spray system sprays dust onto the photovoltaic module surface, or, after spraying, a cleaning device automatically cleans the modules. Furthermore, during rain or snow, the cleaning device can be activated to sweep the photovoltaic module surface with brush rollers, removing accumulated dust and snow, effectively increasing the solar radiation utilization rate of the photovoltaic module surface.

[0022] Furthermore, traditional cleaning devices require separate motors for both the walking mechanism and the brush roller mechanism, increasing the number of motors needed. In this invention, the walking mechanism and the brush roller mechanism can share a single motor. Since the motor is a dual-output shaft motor, with the two output shafts connected to a first gear and a second gear respectively, and the first gear meshing with a rack and pinion, and the second gear meshing with a transmission gear, the motor simultaneously drives the brush roller to reciprocate along the guide rail and also drives its rotation. This eliminates the need for separate motors for walking and brush roller operation, reducing the number of motors and lowering costs.

[0023] 2. The guide rail has a groove extending along its length, and its inner side has a continuous slot communicating with the groove. The groove runs the length of the guide rail, penetrating both ends. A rack is located at the bottom of the groove, and the first gear can only move within the length of the rack. The upper part of the groove has a limiting groove that engages with the axial sides of the first gear. The lower part of the groove has a positioning groove for mounting the rack. The motor's output shaft can pass through and move along the slot, while the limiting grooves axially and radially limit the first gear, thus ensuring that the first gear meshes with the rack.

[0024] 3. The two ends of the brush roller shaft are rotatably supported on a brush roller support. The brush roller support includes a base plate and a support plate perpendicular to the base plate. The motor is mounted on the base plate, and the roller shaft is rotatably supported on the support plate. Therefore, the height of the brush roller can be raised so that the brush roller is positioned above the photovoltaic module array. In addition, since the relative position between the motor and the roller shaft is fixed, the second gear mounted on the motor output shaft can be fixed in relative position with the transmission gear at the end of the brush roller shaft, ensuring that the second gear and the transmission gear remain engaged.

[0025] 4. The guide rails are vertically and crosswise welded to the ends of the crossbeams for easy installation.

[0026] 5. The photovoltaic power generation system also includes sensor components for monitoring photovoltaic modules. An installed infrared camera can monitor the temperature of the photovoltaic modules in real time, and a spray system controlled by a control box can cool the photovoltaic modules, improving their power generation performance. Simultaneously, an installed rain and snow sensor automatically detects rain and snow, and a brush roller cleans the surface of the photovoltaic modules during rain or snowfall to remove dust and snow accumulation.

[0027] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0028] The utility model will be further described below with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the photovoltaic power generation system of this utility model;

[0030] Figure 2 This is a schematic diagram of the photovoltaic power generation system of this utility model;

[0031] Figure 3 This is a schematic diagram of the photovoltaic power generation system of this utility model;

[0032] Figure 4 This is a partial structural schematic diagram of the photovoltaic power generation system of this utility model;

[0033] Figure 5 This is a partial structural schematic diagram of the photovoltaic power generation system of this utility model;

[0034] Figure 6 This is a partial structural schematic diagram of the photovoltaic power generation system of this utility model;

[0035] Figure 7 This is a partial structural schematic diagram of the photovoltaic power generation system of this utility model;

[0036] Reference numerals: 1. Photovoltaic bracket; 11. Column; 12. Inclined beam; 13. Horizontal beam; 2. Photovoltaic module array; 3. Sprayer device; 31. Nozzle; 32. Water supply pipe; 4. Cleaning device; 41. Guide rail; 411. Groove; 412. Rack; 413. Continuous slot; 414. Limiting slot; 415. Positioning slot; 42. Brush roller; 42. Transmission gear; 422. Motor; 43. First gear; 431. Second gear; 432. Brush roller support; 44. Base plate; 441. Support plate; 442. Sensor assembly; 5. Infrared camera; 51. Irradiator; 52. Anemometer; 53. Sensor mounting bracket; 54. Battery pack; 6. Control box; 7. Detailed Implementation

[0037] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0038] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0039] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0042] like Figures 1 to 7 As shown, this embodiment provides a photovoltaic power generation system with cooling, dust removal, and snow removal functions, including a photovoltaic support 1 and a photovoltaic module array 2 installed on the photovoltaic support 1. The photovoltaic power generation system further includes:

[0043] The spray device 3 includes several nozzles 31 disposed on both sides of the photovoltaic module array and water supply pipes 32 connected to the nozzles. The water supply pipes can be connected to a water source, such as tap water or recycled water, and can be equipped with a booster pump to increase the water pressure.

[0044] The spray device 3 has a cooling mode and a dust removal mode. In the cooling mode, the spray device 3 sprays the surface of the photovoltaic module with nozzles 31 to cool it down. In the dust removal mode, the spray device 3 sprays the surface of the photovoltaic module with nozzles 31 to remove dust.

[0045] The cleaning device 4 cleans the surface of the photovoltaic module. The cleaning device 4 includes guide rails 41 on both sides of the photovoltaic module array 2, a brush roller 42 above the photovoltaic module array 2, two motors 43 corresponding to the sides of the brush roller 42, and two transmission gears 422 connected to the ends of the roller shaft of the brush roller. The guide rails 41 are connected to racks 412. The motors 43 are dual-output shaft motors, with the two output shafts respectively connected to a first gear 431 and a second gear 432. The first gear 431 meshes with the rack 412, and the second gear 432 meshes with the transmission gears 422. Therefore, while the motors 43 drive the brush roller 42 to reciprocate along the guide rails 41, they also simultaneously drive the brush roller 42 to rotate.

[0046] Battery pack 6, which supplies power to the motor.

[0047] This utility model discloses a photovoltaic power generation system that integrates a spraying device and a cleaning device, providing cooling, dust removal, and snow removal functions. The spraying device has a cooling mode and a dust removal mode. It can monitor the temperature of the photovoltaic modules in real time and, when the module temperature is too high, controls the spraying device to enter the cooling mode. In this mode, the spray nozzles spray the surface of the photovoltaic modules to cool them down, improving their power generation performance. Simultaneously, in sunny weather, if cleaning is required, the spraying device can be controlled to enter the dust removal mode. In this mode, the spraying device sprays dust onto the surface of the photovoltaic modules, or, after spraying, the cleaning device automatically cleans the photovoltaic modules. During rain or snow, the cleaning device operates, using brush rollers to sweep the surface of the photovoltaic modules, removing accumulated dust and snow, effectively increasing the solar radiation utilization rate of the photovoltaic module surface.

[0048] Furthermore, traditional cleaning devices require separate motors for both the walking mechanism and the brush roller mechanism, increasing the number of motors needed. In this invention, the walking mechanism and the brush roller mechanism can share a single motor. Since the motor is a dual-output shaft motor, with the two output shafts connected to a first gear and a second gear respectively, and the first gear meshing with a rack and pinion, and the second gear meshing with a transmission gear, the motor simultaneously drives the brush roller to reciprocate along the guide rail and also drives its rotation. This eliminates the need for separate motors for walking and brush roller operation, reducing the number of motors and lowering costs.

[0049] In some embodiments, the guide rail 41 has a groove 411 extending along its length inside, and a continuous slot 413 communicating with the groove on its inner side. The groove 411 runs the length of the guide rail 41, extending through both ends of the guide rail or closing the lower longitudinal end. A rack 412 is provided at the bottom of the groove 411, and the first gear can only move within the length of the rack. A limiting groove 414 is provided at the upper part of the groove 411, which engages with the axial sides of the first gear. A positioning groove 415 is provided at the lower part of the groove for mounting the rack. The output shaft of the motor can pass through the continuous slot and move along the normal slot. The limiting groove limits the first gear axially and radially, thereby ensuring that the first gear meshes with the rack.

[0050] Specifically, the two ends of the brush roller shaft are rotatably supported on the brush roller support 44. The brush roller support 44 includes a base plate 441 and a support plate 442 perpendicular to the base plate. The motor 43 is mounted on the base plate 441, and the roller shaft is rotatably supported on the support plate 442. Therefore, the height of the brush roller can be raised so that the brush roller is positioned above the photovoltaic module array. In addition, since the relative position between the motor and the roller shaft is fixed, the second gear mounted on the motor output shaft can be fixed in relative position with the transmission gear at the end of the brush roller shaft, ensuring that the second gear and the transmission gear remain engaged.

[0051] Referring to existing technology, the photovoltaic support 1 includes an inclined beam 12, a column 11 supported below the inclined beam, and a crossbeam 13 vertically and intersectingly fixed to the inclined beam. The guide rail 41 is vertically and intersectingly welded and fixed to the end of the crossbeam for easy installation. Of course, there is a gap between the guide rail and the lateral side of the photovoltaic module array, so the brush roller support with the motor can move longitudinally within this gap.

[0052] In some embodiments, the photovoltaic power generation system further includes a sensor assembly 5 for monitoring the photovoltaic modules. The sensor assembly 5 includes an infrared camera 51 and an irradiance meter 52 for real-time monitoring of the photovoltaic module temperature. The sensor assembly 5 also includes a wind speed meter 53, a rain and snow sensor for automatically sensing rain and snow, etc. The sensor assembly 5 also includes a sensor mounting bracket 54, which has a tripod at its base for mounting on the top of a column, and a T-shaped bracket at its top for mounting various sensors.

[0053] Furthermore, the photovoltaic power generation system also includes a control box 7, which is connected to the sensor assembly 5, the spray device 3, the cleaning device 4, and the battery pack 6. The control box can control the operation of the spray device and the cleaning device based on the monitoring results of the sensor assembly, and also control the battery pack to supply power to the motor, sensor assembly, and control box. The sensor assembly monitors the working status of the photovoltaic modules and weather conditions in real time, and intelligently controls the spray device and cleaning device to effectively cool the photovoltaic modules and clean dust and snow from their surfaces, improving the power generation efficiency of the photovoltaic system. Specifically, the infrared camera monitors the temperature of the photovoltaic modules in real time, and a temperature threshold can be set. When the temperature exceeds the threshold, the control box controls the spray device to cool the photovoltaic modules. In sunny weather, relying on the installed irradiance meter and control box, if sufficient irradiance is detected during a certain period, but the actual power generation is lower than expected, it can be determined that the module's power generation efficiency has decreased, usually due to excessive dust on the photovoltaic module surface. In this case, the spray device can be controlled to automatically clean the photovoltaic modules. The rain and snow sensor automatically detects rain and snow weather, and uses a brush roller to clean the surface of the photovoltaic module to remove dust and snow accumulation.

[0054] It is understood that the battery pack 6 can be connected to the photovoltaic module array 2 for energy storage. This provides a stable power supply when the photovoltaic system is in standby mode at night, ensuring the normal operation of the motor, sensors, and control box.

[0055] In some embodiments, the control box 7 is mounted on a column and located in the upper middle part of the column, while the battery pack 6 is mounted on the column and located at the bottom of the column.

[0056] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A photovoltaic power generation system with cooling, dust and snow removal functions, comprising a photovoltaic support and an array of photovoltaic modules mounted on the photovoltaic support, characterized in that, The photovoltaic power generation system also includes: A spraying device, comprising several nozzles disposed on both sides of the photovoltaic module array and water supply pipes connected to the nozzles, the spraying device having a cooling working mode and a dust removal working mode, the spraying device spraying the surface of the photovoltaic module through the nozzles to cool it down in the cooling working mode, and the spraying device spraying the surface of the photovoltaic module through the nozzles to remove dust in the dust removal working mode. A cleaning device is provided to clean the surface of a photovoltaic module. The cleaning device includes guide rails on both sides of the photovoltaic module array, a brush roller above the photovoltaic module array, two motors on both sides of the brush roller, and two transmission gears connected to the two ends of the roller shaft of the brush roller. The guide rails are connected to racks. The motors are dual-output shaft motors, and the two output shafts are respectively connected to a first gear and a second gear. The first gear meshes with the rack, and the second gear meshes with the transmission gear. A battery pack that supplies power to the motor.

2. The photovoltaic power system of claim 1, wherein, The guide rail has a groove extending along its length inside, and the inner side of the guide rail has a through slot communicating with the groove. The rack is located at the bottom of the groove.

3. The photovoltaic power system of claim 2, wherein, The upper part of the groove is provided with a limiting groove that cooperates with the axial sides of the first gear.

4. The photovoltaic power system of claim 2, wherein, The lower part of the groove is provided with a positioning groove for mounting the rack.

5. The photovoltaic power system of claim 1, wherein, The two ends of the brush roller shaft are rotatably supported by the brush roller support, and the motor is mounted on the brush roller support.

6. The photovoltaic power system of claim 5, wherein, The brush roller support includes a base plate and a support plate perpendicular to the base plate. The motor is mounted on the base plate, and the roller shaft is rotatably supported by the support plate.

7. The photovoltaic power system of claim 1, wherein, The photovoltaic support includes an inclined beam, a column supported below the inclined beam, and a crossbeam vertically and intersectingly fixed to the inclined beam. The guide rail is vertically and intersectingly welded and fixed to the end of the crossbeam.

8. The photovoltaic power system of claim 1, wherein, The photovoltaic power generation system also includes a sensor assembly for monitoring the photovoltaic modules, including an infrared camera for real-time monitoring of the photovoltaic module temperature.

9. The photovoltaic power system of claim 8, wherein, The sensor assembly also includes a rain and snow sensor that automatically detects rain and snow.

10. The photovoltaic power system of claim 8, wherein, The photovoltaic power generation system also includes a control box, which is connected to sensor components, a spray device, a cleaning device, and a battery pack. And / or, the battery pack is connected to the photovoltaic module array.

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