Photovoltaic power generation device

Abstract

The utility model discloses a photovoltaic power generation device which comprises a supporting table, a photovoltaic panel arranged on the supporting table, and a cleaning assembly movably connected to the supporting table and located on the side, away from the supporting table, of the photovoltaic panel. The cleaning plate and the cleaning roller are used for cleaning the surface of the photovoltaic panel, the heating piece is used for heating the cleaning roller, the adjusting structure is connected with the cleaning plate and the cleaning roller, and the adjusting structure is configured to enable the cleaning roller to move in the thickness direction of the photovoltaic panel relative to the cleaning plate. When the photovoltaic power generation device provided by the utility model is used, the cleaning plate can scrape accumulated snow on the photovoltaic panel, when an ice layer is formed on the photovoltaic panel and cannot be removed through the cleaning plate, the heating piece can heat the cleaning roller to enable the cleaning roller to melt the ice layer on the surface of the photovoltaic panel, and when the thicknesses of all areas of the ice layer are inconsistent, the cleaning roller can melt the ice layer on the surface of the photovoltaic panel. The cleaning roller can adaptively move in the thickness direction of the photovoltaic panel and can always make contact with an ice layer.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic power generation device. Background Technology

[0002] When photovoltaic power generation devices are used in high-altitude areas or during winter, snow accumulates on the surface of their photovoltaic panels. In existing technologies, to remove the snow from the surface of the photovoltaic panels, they are usually equipped with an electrically heated film that heats the photovoltaic panels or a drive device that drives the photovoltaic panels to rotate. The electrically heated film heats the photovoltaic panels, which can melt the snow on the photovoltaic panels, and the drive device drives the photovoltaic panels to rotate, allowing the snow on the photovoltaic panels to slide off.

[0003] In existing technologies, it takes a period of time for the electrically heated film to melt the snow on the photovoltaic panel. When the snow on the photovoltaic panel is too thick and causes ice to form, the driving device drives the photovoltaic panel to rotate, and the snow on the photovoltaic panel cannot be completely slid off. Therefore, neither of the above two methods can effectively clean the snow on the photovoltaic panel. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic power generation device that solves the problem that existing photovoltaic power generation devices cannot effectively clear snow from their photovoltaic panels.

[0005] To achieve the above objectives, this utility model provides a photovoltaic power generation device, including a support platform, a photovoltaic panel disposed on the support platform, and a cleaning assembly movably connected to the support platform. The cleaning assembly is located on the side of the photovoltaic panel away from the support platform and includes a cleaning plate and a cleaning roller for cleaning the surface of the photovoltaic panel, a heating element for heating the cleaning roller, and an adjustment structure connecting the cleaning plate and the cleaning roller. The adjustment structure is configured to enable the cleaning roller to move relative to the cleaning plate in the thickness direction of the photovoltaic panel.

[0006] As a further improvement of this utility model, the adjustment structure includes a first connecting member connecting the cleaning plate, a second connecting member connecting the cleaning roller, and an elastic member disposed between the first connecting member and the second connecting member. The first connecting member is movable relative to the second connecting member within a preset range along the thickness direction of the photovoltaic panel, and the adjustment structure is configured such that the elastic member is compressed when the cleaning roller moves away from the photovoltaic panel.

[0007] As a further improvement of this utility model, the first connecting member includes a guide member connected to the cleaning plate, and a guide groove is formed in the guide member. The second connecting member includes a slider connected to the cleaning roller and slidably disposed in the guide groove along the thickness direction of the photovoltaic panel. The elastic member is disposed in the guide groove and located on the side of the slider away from the photovoltaic panel.

[0008] As a further improvement of this utility model, the photovoltaic power generation device further includes a drive component connecting the support platform and the cleaning component, the drive component being used to drive the cleaning component to move relative to the photovoltaic panel.

[0009] As a further improvement of this utility model, the driving assembly includes a screw rotatably connected to the support platform about its own axis, a driving structure for driving the screw to rotate, and a connecting block connected to the cleaning assembly. The connecting block is movably connected to the support platform along the axial direction of the screw and threadedly connected to the screw.

[0010] As a further improvement of this utility model, the support platform is provided with a slide groove extending along the axial direction of the screw, at least a portion of the screw is located in the slide groove, the connecting block includes a guide portion slidably disposed in the slide groove along the axial direction of the screw, and the guide portion is threadedly connected to the screw.

[0011] As a further improvement of this utility model, the cleaning component extends along the length direction of the photovoltaic panel, and the driving component is used to drive the cleaning component to move relative to the photovoltaic panel along the width direction of the photovoltaic panel.

[0012] As a further improvement of this utility model, the screw includes a first screw and a second screw located on both sides of the photovoltaic panel along its length. Both the first screw and the second screw extend along the width direction of the photovoltaic panel. The connecting block includes a first connecting block connected to the cleaning assembly and threaded to the first screw, and a second connecting block connected to the cleaning assembly and threaded to the second screw. The driving structure is used to simultaneously drive the first screw and the second screw to rotate.

[0013] As a further improvement of this utility model, the driving structure includes a transmission shaft rotatably connected to the support platform about its own axis, a driving member for driving the transmission shaft to rotate, a first worm and a second worm coaxially connected to the transmission shaft, a first worm wheel coaxially connected to the first screw, and a second worm wheel coaxially connected to the second screw. The first worm and the first worm wheel are meshed together, and the second worm and the second worm wheel are meshed together.

[0014] As a further improvement of this utility model, the heating element is disposed inside the cleaning roller and extends along the axial direction of the cleaning roller.

[0015] Beneficial effects:

[0016] When the photovoltaic power generation device provided by this utility model is in use, the cleaning plate can scrape off the snow on the photovoltaic plate. When there is ice on the photovoltaic plate and the cleaning plate cannot remove the ice, the heating element can heat the cleaning roller so that the cleaning roller can melt the ice on the surface of the photovoltaic plate. When the thickness of the ice layer is inconsistent in different areas, the cleaning roller can adaptively move along the thickness direction of the photovoltaic plate and can always contact the ice layer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a photovoltaic power generation device provided in an embodiment of the present invention from one perspective;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of a photovoltaic power generation device from another perspective;

[0019] Figure 3 for Figure 1 A magnified diagram of point A in the middle;

[0020] Figure 4 for Figure 1 A magnified diagram of point B in the middle;

[0021] Figure 5 for Figure 1 A schematic diagram of part of the structure of a photovoltaic power generation device;

[0022] Figure 6 for Figure 1 A schematic diagram of the internal structure of a portion of a photovoltaic power generation device.

[0023] Figure 7 for Figure 6 A magnified diagram of point C in the middle;

[0024] Figure 8 for Figure 6 A magnified diagram of point D in the middle.

[0025] In the picture:

[0026] 100. Photovoltaic power generation devices;

[0027] 10. Support platform; 11. Slide groove;

[0028] 20. Photovoltaic panels;

[0029] 30. Sweeping assembly; 31. Sweeping plate; 32. Cleaning roller; 33. Heating element; 34. Adjustment structure; 341. First connecting member; 3411. Guide element; 34111. Groove; 3412. Guide groove; 342. Second connecting member; 3421. Slider; 3422. Connecting part; 343. Elastic element; 344. First adjustment structure; 345. Second adjustment structure;

[0030] 40. Drive assembly; 41. Screw; 411. First screw; 412. Second screw; 42. Drive structure; 421. Drive shaft; 422. Drive component; 423. First worm; 424. Second worm; 425. First worm wheel; 426. Second worm wheel; 43. Connecting block; 431. Guide part; 432. First connecting block; 433. Second connecting block;

[0031] 50. Bracket;

[0032] 60. Protective cover. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0034] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0035] like Figure 1-8 As shown, one embodiment of this utility model provides a photovoltaic power generation device 100, which includes a support platform 10, a photovoltaic panel 20 disposed on the support platform 10, and a cleaning assembly 30 movably connected to the support platform 10. The photovoltaic panel 20 can generate current after being exposed to sunlight.

[0036] The cleaning assembly 30 is located on the side of the photovoltaic panel 20 away from the support platform 10, and includes a cleaning plate 31 and a cleaning roller 32 for cleaning the surface of the photovoltaic panel 20, and a heating element 33 for heating the cleaning roller 32. The cleaning assembly 30 is suitable for cleaning snow and ice from the surface of the photovoltaic panel 20. In this embodiment, the cleaning assembly 30 also includes an adjustment structure 34 connecting the cleaning plate 31 and the cleaning roller 32. The adjustment structure 34 is configured to allow the cleaning roller 32 to move relative to the cleaning plate 31 within a preset range along the thickness direction of the photovoltaic panel 20.

[0037] It should be noted that, Figure 1In the coordinate system shown, the X-axis indicates the length direction of the photovoltaic panel 20, the Y-axis indicates the width direction of the photovoltaic panel 20, and the Z-axis indicates the thickness direction of the photovoltaic panel 20.

[0038] When the cleaning assembly 30 moves relative to the support platform 10, the cleaning plate 31 can scrape away snow on the photovoltaic panel 20. When ice has formed on the photovoltaic panel 20 and cannot be removed by the cleaning plate 31, the heating element 33 can heat the cleaning roller 32, allowing the cleaning roller 32 to melt the ice on the surface of the photovoltaic panel 20. Since the cleaning roller 32 can move relative to the cleaning plate 31 within a preset range along the thickness direction of the photovoltaic panel 20, when the thickness of the ice layer varies in different areas, the cleaning roller 32 can adaptively move along the thickness direction of the photovoltaic panel 20 and always contact the ice layer. In this embodiment, the cleaning plate 31 and the photovoltaic panel 20 may be spaced apart in the thickness direction of the photovoltaic panel 20.

[0039] The heating element 33 is strip-shaped and is specifically disposed inside the cleaning roller 32, extending along the axial direction of the cleaning roller 32. The cleaning roller 32 is configured to rotate about its own axis, and it can roll on the surface of the photovoltaic panel 20 to melt the ice layer on the surface of the photovoltaic panel 20.

[0040] Specifically, the adjustment structure 34 includes a first connecting member 341 connecting the cleaning plate 31, a second connecting member 342 connecting the cleaning roller 32, and an elastic member 343 disposed between the first connecting member 341 and the second connecting member 342. The first connecting member 341 is movable relative to the second connecting member 342 within a preset range along the thickness direction of the photovoltaic panel 20, so that the cleaning roller 32 can move relative to the cleaning plate 31 within the preset range along the thickness direction of the photovoltaic panel 20. The cleaning roller 32 is rotatably connected to the second connecting member 342. The adjustment structure 34 is configured such that the elastic member 343 is compressed when the cleaning roller 32 moves away from the photovoltaic panel 20. Thus, under the action of the elastic member 343, the cleaning roller 32 tends to come closer to the surface of the photovoltaic panel 20, thereby effectively melting the ice layer formed on the surface of the photovoltaic panel 20.

[0041] Furthermore, the first connector 341 includes a guide 3411 connected to the cleaning plate 31, and a guide groove 3412 is formed in the guide 3411. The second connector 342 includes a slider 3421 connected to the cleaning roller 32 and slidably disposed in the guide groove 3412 along the thickness direction of the photovoltaic panel 20. The guide groove 3412 extends along the thickness direction of the photovoltaic panel 20, and the slider 3421 slides in the guide groove 3412, so that the first connector 341 is movable relative to the second connector 342 within a preset range along the thickness direction of the photovoltaic panel 20.

[0042] As can be imagined, the second connector 342 also includes a connecting part 3422 that connects the slider 3421 and the cleaning roller 32. That is, the slider 3421 is connected to the cleaning roller 32 through the connecting part 3422. The guide 3411 has a slot 34111, and the connecting part 3422 extends into the guide groove 3412 through the slot 34111 to connect with the slider 3421.

[0043] The elastic element 343 is disposed within the guide groove 3412 and located on the side of the slider 3421 away from the photovoltaic panel 20. One end of the elastic element 343 in the extension direction contacts the side of the slider 3421 away from the photovoltaic panel 20, and the other end contacts the guide element 3411. When the cleaning roller 32 moves away from the photovoltaic panel, the slider 3421 also moves away from the photovoltaic panel 20. By placing the elastic element 343 on the side of the slider 3421 away from the photovoltaic panel 20, the elastic element 343 can be compressed when the cleaning roller 32 moves away from the photovoltaic panel 20.

[0044] In this embodiment, the photovoltaic power generation device 100 further includes a drive assembly 40 connecting the support platform 10 and the cleaning assembly 30. The drive assembly 40 is used to drive the cleaning assembly 30 to move relative to the photovoltaic panel 20. Under the action of the drive assembly 40, the cleaning assembly 30 can automatically clean the surface of the photovoltaic panel 20 to remove snow from the surface of the photovoltaic panel 20.

[0045] The drive assembly 40 includes a screw 41 rotatably connected to the support platform 10 about its own axis, a drive structure 42 for driving the screw 41 to rotate, and a connecting block 43 connected to the cleaning assembly 30. The connecting block 43 is movably connected to the support platform 10 and threadedly connected to the screw 41 along the axial direction of the screw 41. When the drive structure 42 drives the screw 41 to rotate, it can drive the connecting block 43 to move, and the movement of the connecting block 43 can drive the cleaning assembly 30 to move.

[0046] Specifically, the support platform 10 is provided with a groove 11 extending along the axial direction of the screw 41, at least a portion of the screw 41 is located within the groove 11, and the connecting block 43 includes a guide portion 431 slidably disposed within the groove 11 along the axial direction of the screw 41, and the guide portion 431 is threadedly connected to the screw 41. The guide portion 431 and the groove 11 cooperate to allow the connecting block 43 to move along the axial direction of the screw 41.

[0047] In this embodiment, the cleaning component 30 extends along the length of the photovoltaic panel 20, and the driving component 40 is used to drive the cleaning component 30 to move relative to the width of the photovoltaic panel 20. Under the action of the driving component 40, the cleaning component 30 can basically sweep across the surface of the photovoltaic panel 20 away from the support platform 10.

[0048] It should be noted that in this embodiment, the length of the photovoltaic panel 20 is greater than the width of the photovoltaic panel 20. In other embodiments, the length of the photovoltaic panel 20 may be less than or equal to the width of the photovoltaic panel 20, which is not limited here.

[0049] In this embodiment, the screw 41 includes a first screw 411 and a second screw 412 located on both sides of the photovoltaic panel 20 along its length. Both the first screw 411 and the second screw 412 extend along the width direction of the photovoltaic panel 20. The connecting block 43 includes a first connecting block 432 and a second connecting block 433 located on both sides of the drive assembly 40 along the length direction of the photovoltaic panel 20. The first connecting block 432 is connected to the cleaning assembly 30 and threadedly connected to the first screw 411. The second connecting block 433 is connected to the cleaning assembly 30 and threadedly connected to the second screw 412.

[0050] The drive structure 42 drives the first screw 411 and the second screw 412 to rotate synchronously. When the first screw 411 and the second screw 412 rotate synchronously, the first connecting block 432 and the second connecting block 433 also move synchronously along the width direction of the photovoltaic panel 20, thereby driving the cleaning assembly 30 to move along the width direction of the photovoltaic panel 20. In the above configuration, the movement of the cleaning assembly 30 is more stable and reliable by driving the movement of the cleaning assembly 30 through two screws 41.

[0051] The drive structure 42 includes a drive shaft 421 rotatably connected to the support platform 10 about its own axis, a drive member 422 for driving the drive shaft 421 to rotate, a first worm 423 and a second worm 424 coaxially connected to the drive shaft 421, a first worm wheel 425 coaxially connected to the first screw 411, and a second worm wheel 426 coaxially connected to the second screw 412. The first worm 423 and the first worm wheel 425 are meshed together, and the second worm 424 and the second worm wheel 426 are meshed together.

[0052] As can be imagined, the axis of the drive shaft 421 is perpendicular to the axes of the first screw 411 and the second screw 412. When the drive member 422 drives the drive shaft 421 to rotate, the first worm 423 and the second worm 424 can drive the first worm wheel 425 and the second worm wheel 426 to rotate, respectively. The first worm wheel 425 and the second worm wheel 426 can drive the first screw 411 and the second screw 412 to rotate, respectively.

[0053] With the above configuration, a single driving component 422 can drive the first screw 411 and the second screw 412 to rotate simultaneously. Furthermore, the worm gear transmission has a large transmission ratio, meaning the driving component 422 can drive the first screw 411 and the second screw 412 to rotate with a relatively small output torque. To protect the driving component 422, the photovoltaic power generation device 100 may also include a protective cover 60 surrounding the driving component 422.

[0054] In this embodiment, the adjustment structure 34 includes a first adjustment structure 344 and a second adjustment structure 345. Both the first adjustment structure 344 and the second adjustment structure 345 are connected to the cleaning plate 31 and the cleaning roller 32, and the two are located on both sides of the cleaning assembly 30 in the length direction of the photovoltaic panel 20. The arrangement of the two adjustment structures 34 enables the cleaning roller 32 to move more reliably relative to the cleaning plate 31 in an adaptive manner along the thickness direction of the photovoltaic panel 20.

[0055] The photovoltaic power generation device 100 may also include a bracket 50, which is connected to the support platform 10 on the side away from the photovoltaic panel 20. The bracket 50 is used to support the photovoltaic panel 20 so that the photovoltaic panel 20 is at a preset angle relative to the ground when in use, so as to better receive sunlight.

[0056] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0057] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A photovoltaic power generation device, characterized in that, The device includes a support platform, a photovoltaic panel disposed on the support platform, and a cleaning assembly movably connected to the support platform. The cleaning assembly is located on the side of the photovoltaic panel away from the support platform and includes a cleaning plate and a cleaning roller for cleaning the surface of the photovoltaic panel, a heating element for heating the cleaning roller, and an adjustment structure connecting the cleaning plate and the cleaning roller. The adjustment structure is configured to allow the cleaning roller to move relative to the cleaning plate in the thickness direction of the photovoltaic panel.

2. The photovoltaic power generation device according to claim 1, characterized in that, The adjustment structure includes a first connector connecting the cleaning plate, a second connector connecting the cleaning roller, and an elastic member disposed between the first connector and the second connector. The first connector is movable relative to the second connector within a preset range along the thickness direction of the photovoltaic panel, and the adjustment structure is configured such that the elastic member is compressed when the cleaning roller moves away from the photovoltaic panel.

3. The photovoltaic power generation device according to claim 2, characterized in that, The first connector includes a guide connected to the cleaning plate, the guide having a guide groove formed therein; the second connector includes a slider connected to the cleaning roller and slidably disposed in the guide groove along the thickness direction of the photovoltaic panel; the elastic member is disposed in the guide groove and located on the side of the slider away from the photovoltaic panel.

4. The photovoltaic power generation device according to claim 1, characterized in that, The photovoltaic power generation device also includes a drive assembly connecting the support platform and the cleaning assembly, the drive assembly being used to drive the cleaning assembly to move relative to the photovoltaic panel.

5. The photovoltaic power generation device according to claim 4, characterized in that, The drive assembly includes a screw rotatably connected to the support platform about its own axis, a drive structure for driving the screw to rotate, and a connecting block connected to the cleaning assembly. The connecting block is movably connected to the support platform along the axial direction of the screw and threadedly connected to the screw.

6. The photovoltaic power generation device according to claim 5, characterized in that, The support platform is provided with a slide groove extending along the axial direction of the screw, at least a portion of the screw is located in the slide groove, the connecting block includes a guide portion slidably disposed in the slide groove along the axial direction of the screw, and the guide portion is threadedly connected to the screw.

7. The photovoltaic power generation device according to claim 5, characterized in that, The cleaning component extends along the length of the photovoltaic panel, and the driving component drives the cleaning component to move relative to the photovoltaic panel along the width of the photovoltaic panel.

8. The photovoltaic power generation device according to claim 7, characterized in that, The screw includes a first screw and a second screw located on both sides of the photovoltaic panel along its length. Both the first screw and the second screw extend along the width of the photovoltaic panel. The connecting block includes a first connecting block connected to the cleaning assembly and threaded to the first screw, and a second connecting block connected to the cleaning assembly and threaded to the second screw. The driving structure is used to drive the first screw and the second screw to rotate simultaneously.

9. The photovoltaic power generation device according to claim 8, characterized in that, The drive structure includes a drive shaft rotatably connected to the support platform about its own axis, a drive member for driving the drive shaft to rotate, a first worm and a second worm coaxially connected to the drive shaft, a first worm wheel coaxially connected to the first screw, and a second worm wheel coaxially connected to the second screw. The first worm and the first worm wheel are meshed together, and the second worm and the second worm wheel are meshed together.

10. The photovoltaic power generation device according to claim 1, characterized in that, The heating element is disposed inside the cleaning roller and extends along the axial direction of the cleaning roller.

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