Automatic snow removing device for photovoltaic power station

Abstract

The invention discloses an automatic snow removing device for a photovoltaic power station, which comprises a snow remover and a transverse moving base, and is characterized in that the snow remover comprises a snow removing rack, a snow removing plate mounted on the snow removing rack, a driving transmission part for driving the snow remover to move and an energy storage system for supplying power to the snow remover; the transverse moving base is installed on the photovoltaic support and located above the photovoltaic module array in the longitudinal direction, and the snow remover moves on the transverse moving base in the transverse direction so as to convert the snow removing position in the transverse direction. After snowing, the automatic snow removing device can be started in time to perform continuous and automatic snow removing operation, so that the health degree of the photovoltaic module is kept, and the operation and maintenance work is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and particularly relates to a snow removal device for a photovoltaic power station.

Background Art

[0002] In winter in northern China, the climate is cold and the snowfall is heavy, which poses severe challenges to the operation and maintenance of photovoltaic power stations. The snow cover will have the following impacts:

[0003] (1) Reducing power generation efficiency: The snow cover will block the photovoltaic modules, resulting in a decrease in light intensity, and further affecting the power generation efficiency of the photovoltaic modules, which will cause a significant drop in the power generation of the photovoltaic modules.

[0004] (2) Causing component damage: Long-term bearing of the heavy pressure of the snow cover may cause deformation or damage to the photovoltaic modules. Especially when the snow thickness exceeds the maximum load-bearing capacity of the modules, this risk will increase further, thus affecting the service life and overall performance of the photovoltaic modules.

[0005] Most of the northern regions adopt truss and courtyard solutions. The existing truss solutions are mainly constructed across the house. In the single-slope solution, the rear columns can reach more than 8 meters, and the power station is relatively high without a suitable snow removal solution.

[0006] Referring to the Chinese patent application for invention with the authorization publication number CN217824882 U, it discloses a high-efficiency snow remover for a rooftop photovoltaic power station, including a ferry mechanism, a rotary brush mechanism, and a traveling mechanism. The rotary brush mechanism and the traveling mechanism are both arranged on a fixed frame, and the traveling mechanism is hung on the ferry mechanism; the ferry mechanism is composed of two parallelogram truss structures. The truss structure includes a rack slideway at the top, a connecting rail seat at the bottom, and multiple ferry rods with both ends hinged to the rack slideway and the connecting rail seat respectively. The bottom of one of the ferry rods is connected to the output shaft of a ferry reduction motor. However, its structure is complex, especially the need to additionally set up a ferry mechanism, resulting in a relatively high maintenance cost.

Summary of the Invention

[0007] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an automatic snow removal device for a photovoltaic power station, which solves the problems of complex structure and too high maintenance cost of the snow remover for a photovoltaic power station in the prior art.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions:

[0009] An automatic snow removal device for a photovoltaic power station, the photovoltaic power station includes a photovoltaic support and a photovoltaic module array installed on the photovoltaic support. The automatic snow removal device includes:

[0010] Snow removal machine, the snow removal machine includes a snow removal machine frame, a snow removal plate installed on the snow removal machine frame, a drive transmission component for driving the snow removal machine to move, and an energy storage system for supplying power to the snow removal machine. When removing snow, the snow removal machine moves downward from top to bottom longitudinally, and the snow removal plate closely adheres to the photovoltaic module to push the snow off.

[0011] Transverse movement base, the transverse movement base is installed on the photovoltaic support and is located above the photovoltaic module array longitudinally. The snow removal machine moves transversely on the transverse movement base to change the snow removal position transversely.

[0012] Preferably, the drive transmission component includes a transmission wheel and a drive motor for driving the transmission wheel to rotate.

[0013] Preferably, a self-retracting drive wire spool is further provided on the transverse movement base. A drive wire is wound on the self-retracting drive wire spool. The free end of the drive wire is connected to the snow removal machine. When the snow removal machine moves downward from top to bottom longitudinally, the drive wire is pulled out from the self-retracting drive wire spool. When the snow removal machine moves upward from bottom to top longitudinally, the drive wire is automatically retracted.

[0014] Preferably, a limit seat is installed on the upper side longitudinally of the transverse movement base. A transverse sliding limit structure is provided between the self-retracting drive wire spool and the limit seat. When the snow removal machine moves transversely on the transverse movement base, the transverse sliding limit structure guides the self-retracting drive wire spool to slide transversely.

[0015] Preferably, the transverse sliding limit structure includes a limit block. The self-retracting drive wire spool is connected to the limit block. The limit seat is provided with a limit sliding groove extending transversely. The limit block is slidably connected to the limit sliding groove. When the snow removal machine moves transversely, the self-retracting drive wire spool slides transversely along with the limit block along the limit sliding groove.

[0016] Preferably, the free end of the drive wire is connected to a fixing member, and the fixing member is fixed to the snow removal machine.

[0017] Preferably, the snow removal machine further includes an energy-supplying photovoltaic panel installed on the snow removal support. The energy-supplying photovoltaic panel supplies power to the energy storage system.

[0018] Preferably, the photovoltaic module array is arranged obliquely longitudinally. The transverse movement base is provided with a transverse movement panel. The transverse movement panel extends obliquely longitudinally and the inclination angle is greater than the inclination angle of the photovoltaic module array.

[0019] Preferably, the snow removal machine frame includes a bottom plate, a snow removal plate support provided on the bottom plate for supporting the snow removal plate; and / or, the snow removal plate is of an arc-shaped structure.

[0020] Preferably, the photovoltaic support includes a truss and columns for supporting the truss. The truss is provided with an upper chord rod. The longitudinal upper end of the upper chord rod is connected to the transverse movement base.

[0021] The present invention adopts the above technical solution and has the following beneficial effects:

[0022] 1. The snow remover includes a snow removal frame, a snow removal plate installed on the snow removal frame, a driving transmission component for driving the snow remover to move, and an energy storage system for supplying power to the snow remover. The photovoltaic module array is divided into continuous snow removal blocks in the transverse direction, and the width of the snow removal block corresponds to the snow removal width of the snow removal plate. In this way, the snow remover moves downward along the longitudinal direction in each snow removal block, and the snow removal plate closely adheres to the photovoltaic module to push the snow downward. When it runs to the lowermost side in the longitudinal direction, the snow falls, thereby clearing the snow in this snow removal block.

[0023] The transverse movement base is installed on the photovoltaic support and is located above the photovoltaic module in the longitudinal direction. The snow remover moves transversely on the transverse movement base to switch the snow removal position in the transverse direction. That is, after one snow removal block is cleared of snow, the snow remover returns to the transverse movement base, then moves a distance equal to the width of one snow removal block in the transverse direction on the transverse movement base. After reaching above the next snow removal block, the snow removal work is carried out again. In this way, the snow on the photovoltaic module array is finally completely cleared.

[0024] Since the snow remover stays on the transverse movement base after snow removal is completed, it avoids blocking the photovoltaic module array and affecting the power generation efficiency of the photovoltaic module array.

[0025] Since there is no need to set up an operation track for the snow remover on the photovoltaic support, the snow remover operates independently on the photovoltaic module array, with a simple structure and convenient maintenance.

[0026] Therefore, the automatic snow removal device of the present invention can be started in time after snowfall to perform continuous automatic snow removal operations, thereby maintaining the health of the photovoltaic module, reducing operation and maintenance work, and increasing the winter power generation efficiency of the power station. At the same time, it can also avoid maintenance personnel climbing to perform snow removal operations and avoid the risk of manual snow removal by snow removal personnel.

[0027] 2. The driving transmission component includes a transmission wheel and a driving motor for driving the transmission wheel to rotate. In addition, when the snow remover moves upward from the longitudinal downward direction, due to the existence of the slope, there may be a situation of insufficient power. Therefore, a self-retracting transmission wire shaft is also provided on the transverse movement base. A transmission wire is wound on the self-retracting transmission wire shaft, and the free end of the transmission wire is connected to the snow remover. The transmission wire is automatically retracted when the snow remover moves upward along the longitudinal direction, providing a certain amount of power for the snow remover to enable the snow remover to smoothly return to the transverse movement base.

[0028] 3. In order to guide the self-retracting transmission wire shaft to move transversely, a limit seat is installed on the upper side in the longitudinal direction of the transverse movement base. A transverse sliding limit structure is provided between the self-retracting transmission wire shaft and the limit seat. When the snow remover moves transversely on the transverse movement base, the transverse sliding limit structure guides the self-retracting transmission wire shaft to slide transversely.

[0029] 4. The self - retracting drive spool is connected to the limit block. The limit seat is provided with a limit chute extending horizontally, and the limit block is slidably connected to the limit chute. In this way, when the snow remover moves horizontally, the self - retracting drive spool slides horizontally along the limit chute together with the limit block.

[0030] 5. The snow remover is equipped with an energy - supplying photovoltaic panel, and the energy - supplying photovoltaic panel powers the energy storage system. On sunny days, the photovoltaic panel of the snow removal device absorbs solar energy and stores it. After the snow, the snow removal device relies on the electric energy provided by the energy storage system for snow removal operations, without the need for an external power source, which facilitates the operation of the snow removal device.

[0031] 6. Since the transverse movement panel extends obliquely longitudinally and the inclination angle is greater than the inclination angle of the photovoltaic module array, with the help of this downward slope, it is beneficial for the snow remover to move from the transverse movement panel to the surface of the photovoltaic module array during snow removal.

[0032] 7. The top of the photovoltaic support is a truss structure. The advantage of the truss is that the members mainly bear tension or pressure, which can give full play to the role of materials, save materials, and reduce the structural weight.

[0033] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Description of the Drawings

[0034] The following further describes the invention with reference to the drawings:

[0035] Figure 1 It is a schematic structural diagram of an automatic snow removal device for a photovoltaic power station according to the present invention;

[0036] Figure 2 It is a schematic partial structural diagram of an automatic snow removal device for a photovoltaic power station according to the present invention;

[0037] Figure 3 It is a schematic partial structural diagram of an automatic snow removal device for a photovoltaic power station according to the present invention;

[0038] Reference numerals: snow remover 1, snow remover frame 11, snow removal board 12, drive wheel 13, energy storage system 14, energy - supplying photovoltaic panel 15, photovoltaic support 2, photovoltaic module array 200, column 21, protruding section 211, truss 22, diagonal brace 23, transverse movement base 3, transverse movement panel 31, support column 32, fixed rod 33, limit seat 34, limit chute 341, limit block 35, self - retracting drive spool 36, drive line 37.

Specific Embodiments

[0039] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0040] Those skilled in the art can understand that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0041] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "lateral", "longitudinal", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0043] Refer to Figures 1 to 3 As shown, the embodiments of the present invention provide an automatic snow removal device for a photovoltaic power station. The photovoltaic power station includes a photovoltaic support 2 and a photovoltaic module array 200 installed on the photovoltaic support. Generally, the photovoltaic module array 200 is inclined longitudinally. Here, it is set that the inclination direction of the photovoltaic module array 200 is longitudinal (usually the north-south direction, that is, the south side is low and the north side is high to face the sunlight irradiation direction). The photovoltaic power station is provided with an automatic snow removal device, and the automatic snow removal device includes:

[0044] A snow remover 1, the snow remover 1 includes a snow removal machine frame 11, a snow removal plate 12 installed on the snow removal machine frame, a driving transmission component for driving the snow remover to move, and an energy storage system 14 for supplying power to the snow remover. When removing snow, the snow remover 1 moves from top to bottom longitudinally, and the snow removal plate 12 closely adheres to the photovoltaic module to push the snow off.

[0045] The transverse movement base 3 is installed on the top of the photovoltaic support 2 and is located vertically above the photovoltaic module array 200. The snow remover 1 moves transversely along the transverse movement base 3 to switch the snow removal position transversely.

[0046] In this embodiment, the photovoltaic module array 200 can be divided into several continuous snow removal blocks transversely. The width of the snow removal block corresponds to the snow removal width of the snow removal board. In this way, the snow remover moves vertically downward from top to bottom in each snow removal block, and the snow removal board closely adheres to the photovoltaic module to push the snow downward. When it runs to the lowest side vertically, the snow falls, thereby clearing the snow in this snow removal block. In order to switch the snow removal position transversely, after each snow removal is completed, the snow remover 1 moves vertically upward from bottom to top, returns to the transverse movement base 3, moves transversely along the transverse movement base 3, transfers to the position corresponding to the next snow removal block, then turns, and then moves vertically downward from top to bottom to complete the snow removal work of another snow removal block, and runs continuously until the snow removal work of the entire photovoltaic module array 200 is completed.

[0047] Since the photovoltaic module array is arranged obliquely vertically, when the snow remover passes through the photovoltaic module array vertically downward from top to bottom and clears the snow, with the help of the slope of the photovoltaic module array, a certain propulsive force can be generated, thereby reducing the work done by the driving transmission components of the snow remover.

[0048] Since after the snow removal is completed, the snow remover stays on the transverse movement base, it avoids blocking the photovoltaic module array and affecting the power generation efficiency of the photovoltaic module array.

[0049] Since there is no need to set the running track of the snow remover on the photovoltaic support, the snow remover runs independently on the photovoltaic module array, with a simple structure and convenient maintenance.

[0050] Therefore, the automatic snow removal device of the present invention can be started in time after snowfall to perform continuous automatic snow removal operations, thereby maintaining the health of the photovoltaic modules, reducing the operation and maintenance work, and increasing the winter power generation efficiency of the power station. At the same time, it can also avoid maintenance personnel climbing to perform snow removal operations and avoid the risk of manual snow removal by snow removal personnel.

[0051] Specifically, the driving transmission components include a transmission wheel 13 and a driving motor for driving the transmission wheel to rotate. The driving motor is powered by an energy storage system 14. There are usually four transmission wheels. Of course, other transmission structures, such as a speed reducer, are also provided between the driving motor and the transmission wheel to increase the torque. Specifically, reference can also be made to the prior art snow remover with a self-propelled function.

[0052] Such as Figure 2As shown in the figure, the transverse moving base 3 includes a transverse moving panel 31 and support columns 32 that support the transverse moving panel. The bottoms of the support columns are fixed to the truss. In addition, when the snow remover moves from the longitudinal downward direction to the upward direction, due to the slope, there may be a situation of insufficient power. Therefore, a self - retracting drive wire spool 36 is also provided on the transverse moving base 3. A drive wire 37 is wound on the self - retracting drive wire spool 36. The free end of the drive wire 37 is connected to the snow remover 1. The drive wire 37 is pulled out from the self - retracting drive wire spool when the snow remover 1 moves longitudinally from top to bottom, and automatically winds up when the snow remover 1 moves longitudinally from bottom to top. This provides a certain amount of power for the snow remover, enabling the snow remover to smoothly return to the transverse moving base.

[0053] Among them, the self - retracting drive wire spool 36 can be driven to rotate forward and backward by a motor, or can be connected to an energy storage device such as a torsion spring, so that the drive wire stores force when the snow remover moves longitudinally from top to bottom, and automatically winds up when the snow remover moves longitudinally from bottom to top.

[0054] When the snow remover 1 moves transversely on the transverse moving base 3 to switch the snow removal position, the self - retracting drive wire spool 36 has to move transversely together with the snow remover 1 to ensure the use function. To guide the transverse movement of the self - retracting drive wire spool 36, a limit seat 34 is installed on the longitudinal upper side of the transverse moving base 3. The limit seat 34 is fixed to a fixed rod 33. The bottom of the fixed rod is welded to the transverse moving panel 31. The limit seat 34 extends transversely and is connected to a plurality of fixed rods 33 arranged transversely. A transverse sliding limit structure is provided between the self - retracting drive wire spool 36 and the limit seat 34. When the snow remover moves transversely on the transverse moving base, the transverse sliding limit structure guides the self - retracting drive wire spool to slide transversely.

[0055] Specifically, the transverse sliding limit structure includes a limit block 35. The self - retracting drive wire spool 36 is connected to the limit block 35. The limit seat 34 is provided with a limit sliding groove 341 extending transversely. The limit sliding groove 341 can be a T - shaped groove, and the corresponding limit block 35 is a T - shaped block. The limit block 35 is slidably connected to the limit sliding groove 341. In this way, when the snow remover 1 moves transversely, the self - retracting drive wire spool 36 slides transversely along the limit sliding groove together with the limit block 35. The free end of the drive wire is connected to a fixing member, and the fixing member is fixed to the snow remover. The fixing member can be a bolt.

[0056] In addition, the snow remover 1 further includes an energy - supplying photovoltaic panel 15 installed on the snow removal bracket. The energy - supplying photovoltaic panel 15 supplies power to the energy storage system 14. In this way, on sunny days, the energy - supplying photovoltaic panel of the snow removal device absorbs solar energy and stores it. After the snow, the snow removal device relies on the electric energy provided by the energy storage system for snow removal operations, without the need for an external power source, which is convenient for the operation of the snow removal device.

[0057] Preferably, the transverse movement panel 31 extends obliquely in the longitudinal direction and the inclination angle is greater than the inclination angle of the photovoltaic module array. With the help of this downward slope, it is beneficial for the snow removal machine to move from the transverse movement panel to the surface of the photovoltaic module array when removing snow.

[0058] Specifically, the snow removal machine frame 1 includes a bottom plate and a snow removal plate support provided on the bottom plate for supporting the snow removal plate. The snow removal machine frame, the snow removal plate support and the snow removal plate can be welded into a whole. The snow removal plate 12 is of an arc structure, which is beneficial for pushing the snow accumulation.

[0059] In this embodiment, the photovoltaic support 2 includes a truss 22 and columns 21 supporting the truss. The truss 22 is provided with an upper chord. A protruding section 211 is provided at the longitudinal upper end of the upper chord. The protruding section 211 extends beyond the longitudinal upper edge of the photovoltaic module array 200 and is connected to the transverse movement base 3, that is, connected to the bottom of the support column. In addition, a diagonal brace 23 is provided between the column 21 and the truss 22 to enhance the overall strength of the photovoltaic support. The truss scheme is mainly for construction across the building and has a relatively high height, which is suitable for the application of the automatic snow removal device in this embodiment.

[0060] After the snow stops and snow accumulation is detected, the automatic snow removal device can be automatically started. The energy storage system 14 provides power to move the automatic snow removal device. The snow removal plate 12 closely adheres to the surface of the photovoltaic module array to push the snow on the components off. The automatic snow removal device stops at a low position, and then the self-retracting drive spool 36 contracts and winds back to provide power to return to the transverse movement base 3. Then, the drive transmission component provides power for the lateral movement of the snow removal device to make it move laterally, and then pushes the snow off from high to low until all the snow in the power station is cleared and it returns to its original position.

[0061] Thus, it can be seen that the present invention can automatically remove snow, promptly clear the snow to improve the power generation efficiency of the components, speed up the snow removal progress of the power station, and at the same time reduce the operation and maintenance difficulty and the risk of snow removal personnel.

[0062] The above is only the specific embodiment of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. An automatic snow removal device for a photovoltaic power station, the photovoltaic power station comprising a photovoltaic support and a photovoltaic module array mounted on the photovoltaic support, characterized in that, The automatic snow removal device includes: A snow remover, which includes a snow remover frame, a snow removal plate installed on the snow remover frame, a driving transmission component for driving the snow remover to move, and an energy storage system for supplying power to the snow remover. When removing snow, the snow remover moves downward from top to bottom longitudinally, and the snow removal plate closely adheres to the photovoltaic module to push the snow down; A transverse movement base, which is installed on the photovoltaic support and is located above the longitudinal direction of the photovoltaic module array. The snow remover moves transversely on the transverse movement base to switch the snow removal position transversely.

2. The snow removal device according to claim 1, characterized in that, The driving transmission component includes a transmission wheel and a driving motor for driving the transmission wheel to rotate.

3. The snow removal device according to claim 1, characterized in that, A self-retracting transmission wire spool is further provided on the transverse movement base. A transmission wire is wound on the self-retracting transmission wire spool. The free end of the transmission wire is connected to the snow remover. The transmission wire is pulled out from the self-retracting transmission wire spool when the snow remover moves downward from top to bottom longitudinally, and the transmission wire is automatically wound when the snow remover moves upward from bottom to top longitudinally.

4. The snow removal device according to claim 3, characterized in that A limiting seat is installed on the upper side of the longitudinal direction of the transverse movement base. A transverse sliding limiting structure is provided between the self-retracting transmission wire spool and the limiting seat. When the snow remover moves transversely on the transverse movement base, the transverse sliding limiting structure guides the self-retracting transmission wire spool to slide transversely.

5. The snow removal device according to claim 4, characterized in that, The transverse sliding limiting structure includes a limiting block. The self-retracting transmission wire spool is connected to the limiting block. The limiting seat is provided with a limiting sliding groove extending transversely. The limiting block is slidably connected to the limiting sliding groove. When the snow remover moves transversely, the self-retracting transmission wire spool slides transversely along the limiting sliding groove together with the limiting block.

6. The snow removal device according to claim 3, characterized in that, The free end of the transmission wire is connected to a fixing member, and the fixing member is fixed to the snow remover.

7. The snow removal device according to claim 1, characterized in that, The snow remover further includes an energy-supplying photovoltaic panel installed on the snow remover support, and the energy-supplying photovoltaic panel supplies power to the energy storage system.

8. The snow removal device according to claim 1, characterized in that, The photovoltaic module array is arranged obliquely longitudinally. The transverse movement base is provided with a transverse movement panel, and the transverse movement panel extends obliquely longitudinally and the inclination angle is greater than the inclination angle of the photovoltaic module array.

9. The snow removal device according to claim 1, characterized in that, The snow remover frame includes a bottom plate and a snow removal plate support provided on the bottom plate for supporting the snow removal plate; and / or, the snow removal plate is of an arc-shaped structure.

10. The snow removal device according to claim 1, characterized in that, The photovoltaic support includes a truss and columns for supporting the truss. The truss is provided with an upper chord, and the longitudinal upper end of the upper chord is connected to the transverse movement base.

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