Snow blocking pressing block device and photovoltaic system

Abstract

The utility model discloses a snow-blocking pressing block device and a photovoltaic system, belonging to the field of photovoltaic technology, the snow-blocking pressing block device is installed between two longitudinally adjacent photovoltaic assemblies, the snow-blocking pressing block device comprises a snow-blocking pressing block and a pressing block fixing structure for fixing the snow-blocking pressing block and a photovoltaic assembly frame, the snow blocking pressing block is provided with a snow blocking part higher than the A face of the frame. According to the utility model, accumulated snow which slides and passes can be blocked and divided, a buffering effect is achieved, the snow blocking pressing block and the photovoltaic module frame are fixed by the pressing block fixing structure, and the snow blocking pressing block is prevented from falling off due to impact of the accumulated snow.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic power generation equipment, and particularly relates to a photovoltaic system equipped with a snow blocking structure.

Background Art

[0002] In the field of household photovoltaics, the components of a household photovoltaic system are installed on the roof of a farmer's house at a certain angle longitudinally, and the angle ranges from 15 to 45 degrees. During snow melting, the larger the angle of the photovoltaic module, the greater the probability of snow sliding. If a large area of snow slides from a high place, it is easy to cause significant damage to people and property.

[0003] In order to avoid the influence of shadow occlusion on the photovoltaic power generation efficiency, the prior art is to install a snow blocking device on the frame of the lowest component of the photovoltaic system, which can slow down the speed of snow sliding, and at the same time can divide the large area of sliding snow into small pieces of snow, minimizing the damage caused by snow sliding. For example, the Chinese utility model patent with the publication number CN214506987U discloses a snow blocking device for a photovoltaic module, including a first fixture and a second fixture for clamping with the frame of the photovoltaic module. The first fixture is provided with a U-shaped groove structure for clamping with the upper wall, outer wall and lower wall of the frame, and the U-shaped groove structure extends parallel to the lower wall; the second fixture cooperates with the extended plate of the U-shaped groove structure to clamp the lower wall, and the first fixture is provided with a partition plate for separating the snow on the photovoltaic panel of the photovoltaic module, and the partition plate is arranged on the U-shaped groove structure.

[0004] However, since a photovoltaic system usually consists of multiple photovoltaic modules arranged in a large-area photovoltaic array, especially on a large roof, when the snow slides down from top to bottom along the surface of the photovoltaic module, its volume becomes larger and larger. If only the snow blocking device installed on the frame of the lowest component of the photovoltaic system is used for snow blocking, the snow blocking effect is limited, and it is easy to cause the risk of large snow blocks falling.

Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a snow blocking pressing block device and a photovoltaic system, which solve the problem that the existing snow blocking device installed on the frame of the lowest component of the photovoltaic system has a poor snow blocking effect and is easy to cause the risk of large snow blocks falling.

[0006] To solve the above technical problem, the utility model adopts the following technical scheme: a snow blocking pressing block device, which is installed between two longitudinally adjacent photovoltaic modules. The snow blocking pressing block device includes a snow blocking pressing block and a pressing block fixing structure for fixing the snow blocking pressing block to the frame of the photovoltaic module. The snow blocking pressing block is provided with a snow blocking part higher than the A surface of the frame.

[0007] Preferably, the snow blocking part is provided with a snow blocking surface extending longitudinally in an arc or obliquely.

[0008] Preferably, a vertical surface is provided on the side of the snow blocking part facing away from the snow blocking surface, and a snow breaking angle is provided between the vertical surface and the upper end of the snow blocking surface.

[0009] Preferably, an upper insertion part for inserting between two adjacent photovoltaic modules is provided at the lower part of the snow blocking pressing block; and / or, upper pressing edges respectively pressing on the A surfaces of the frames of the two photovoltaic modules on the longitudinal opposite sides are provided at the middle part of the snow blocking pressing block.

[0010] Preferably, the pressing block fixing structure includes a lower pressing block and a fastener connecting the snow blocking pressing block and the lower pressing block, and the snow blocking pressing block and the lower pressing block cooperate to clamp the frame of the photovoltaic module.

[0011] Preferably, a lower insertion part for inserting between two adjacent photovoltaic modules is provided at the upper part of the lower pressing block; and / or, lower pressing edges respectively pressing on the C surfaces of the frames of the two photovoltaic modules on the longitudinal opposite sides are provided at the lower part of the lower pressing block.

[0012] Preferably, an anti-rotation structure is provided between the lower pressing edge and the C surface of the frame.

[0013] Preferably, the anti-rotation structure includes a buckle groove provided on the C surface of the frame and a buckling protrusion provided on the lower pressing edge, and the buckling protrusion is buckled in the buckle groove.

[0014] Preferably, the fastener is a fastening screw, a threaded hole is provided on the lower pressing block, a through hole is provided on the snow blocking pressing block, and the fastening screw passes downward through the through hole and is threadedly connected to the threaded hole; and / or, the snow blocking pressing block and the lower pressing block are made of stainless steel or aluminum alloy profiles.

[0015] The present utility model also provides a photovoltaic system, including photovoltaic modules arranged in an array, characterized in that the snow blocking pressing block device is installed between two longitudinally adjacent photovoltaic modules.

[0016] The present utility model adopts the above technical solutions and has the following beneficial effects:

[0017] 1. For the technical solution adopted by the present utility model, the snow blocking pressing block device is installed between two longitudinally adjacent photovoltaic modules, and a snow blocking part higher than the A surface of the frame is provided on the snow blocking pressing block to block and divide the sliding snow, playing a buffering role. The pressing block fixing structure fixes the snow blocking pressing block to the frame of the photovoltaic module, preventing the snow blocking pressing block from falling off due to the impact of the snow.

[0018] Not only can multiple snow blocking pressing block devices be installed horizontally, but also multiple rows of snow blocking pressing block devices can be arranged in a stepped manner along the longitudinal direction, playing a stepped buffering role, thereby improving the snow blocking effect and solving the problem that the existing snow blocking device has a poor snow blocking effect when installed on the frame of the lowermost module in the photovoltaic system and is prone to the risk of large-area snow blocks falling.

[0019] Of course, it is also possible to combine with the prior art to install a snow blocking device on the frame of the lowest component of the photovoltaic system to minimize the damage caused by the sliding of accumulated snow.

[0020] Therefore, the utility model can reduce the range where the accumulated snow impacts the ground, reduce the threat of the accumulated snow impact to the life and property of temporary buildings and passing pedestrians, and completely solve the safety risk problem caused by the sliding of large pieces of accumulated snow on the surface of photovoltaic modules.

[0021] 2. The function of the snow blocking part is to block the accumulated snow. The snow blocking surface blocks the accumulated snow sliding upward. The snow blocking surface is designed in an arc shape or obliquely. The greater the inclination arc at the upper end of the snow blocking surface, the greater the resistance to the accumulated snow. The height of the snow blocking part is set according to the shadow calculation. When the shadow is the longest on the winter solstice, its shadow just does not block the photovoltaic module, so that the snow blocking pressing block can be installed on each photovoltaic module without affecting the power generation amount.

[0022] 3. The snow breaking angle is used to absorb the impact force when the accumulated snow slides and break the ice at the bottom layer of the accumulated snow. The design of the vertical surface is beneficial to making the broken accumulated snow fall on the surface of the lower photovoltaic module, avoiding accumulation at the snow blocking part.

[0023] 4. Under the fastening action of the fastener, the snow blocking pressing block and the lower pressing block cooperate to clamp the frame of the photovoltaic module to prevent the snow blocking pressing block device from loosening and falling off.

[0024] 5. The lower pressing block is pre-placed, then the photovoltaic module is installed, and finally the snow blocking pressing block is installed. Therefore, the function of the lower insertion part is to limit the installation gap between the longitudinally adjacent upper and lower rows of photovoltaic modules. When the upper and lower rows of photovoltaic modules are close to the lower insertion part, the installation gap is fixed, thereby improving the installation accuracy of the photovoltaic module. After finally installing the snow blocking pressing block, the upper insertion part and the lower insertion part cooperate to enhance the longitudinal limiting effect and ensure the relative fixation of the longitudinal positions between two longitudinally adjacent photovoltaic modules.

[0025] 6. The upper pressing edge and the lower pressing edge jointly clamp the frame under the action of the fastener, so that the snow blocking device is firmly fixed on the photovoltaic module.

[0026] 7. An anti-rotation structure is provided between the lower pressing block and the C surface of the frame. The buckling protrusion is buckled in the buckling groove, so that the anti-rotation structure between the lower pressing block and the C surface of the frame realizes concave-convex engagement. In this way, during the process of screwing the fastening screw, the lower pressing block will not rotate with the fastening screw, making the installation more convenient; at the same time, the insertion of the buckling protrusion and the buckling groove makes the lower pressing block not easy to slide out.

[0027] 8. The fastening screw passes downward through the through hole and is threadedly connected with the threaded hole. When the fastening screw is screwed, the snow blocking pressing block and the lower pressing block can be clamped and fixed on the photovoltaic module. And the above-mentioned pressing block fixing structure screws the fastening screw from above, so it is convenient for the installation of the snow blocking pressing block device.

[0028] 9. Since the snow-blocking pressing block and the lower pressing block are made of stainless steel or aluminum alloy profiles, industrial production can be achieved, significantly reducing costs, and they have high strength, are not easily corroded, and have a long service life.

[0029] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following further describes the utility model with reference to the drawings:

[0031] Figure 1 It is a schematic structural diagram of an adjustable snow-blocking device installed in a photovoltaic system according to the present utility model;

[0032] Figure 2 It is a schematic structural diagram of a snow-blocking clamp;

[0033] Figure 3 It is a schematic structural diagram of an adjustable clamp;

[0034] Figure 4 It is a schematic structural diagram of a conventional photovoltaic module frame;

[0035] Figure 5 It is a schematic structural diagram of the joint between the snow-blocking clamp and the frame;

[0036] Figure 6 It is a schematic structural diagram of the joint between the snow-blocking clamp and the adjustable clamp;

[0037] Figure 7 It is a schematic structural diagram of the hypotenuse and the snow-blocking plate with reinforcing ribs provided;

[0038] Figure 8 It is a schematic structural diagram of the cooperation structure between the snow-blocking device and the first-height frame;

[0039] Figure 9 It is a schematic structural diagram of the cooperation structure between the snow-blocking device and the second-height frame;

[0040] Figure 10 It is a schematic structural diagram of the cooperation structure between the snow-blocking device and the third-height frame;

[0041] Figure 11 It is a schematic structural diagram of a plurality of snow-blocking pressing block devices arranged in a stepped manner longitudinally;

[0042] Figure 12 It is a schematic structural diagram of the snow-blocking pressing block device installed between two longitudinally adjacent photovoltaic modules;

[0043] Figure 13 It is a schematic structural diagram of the snow-blocking pressing block;

[0044] Figure 14Schematic structural diagram of the lower pressing block;

[0045] Figure 15 Schematic structural diagram of the frame;

[0046] Figure 16 Schematic structural diagram of the snow-blocking pressing device cooperating with the first-height frame;

[0047] Figure 17 Schematic structural diagram of the snow-blocking pressing device cooperating with the second-height frame;

[0048] Figure 18 Schematic structural diagram of the snow-blocking pressing device cooperating with the third-height frame;

[0049] Reference numerals: photovoltaic module 100, frame 11, A surface 111, snap-in groove 1111, B surface 112, C surface 113, extension edge 1131, snap groove 1132, snow-blocking device 200, snow-blocking clamp 21, first clamping opening 211, first upper clamping edge 2111, first inner side edge 2112, first lower clamping edge 2113, arc-shaped downward turning edge 2114, snap-in protrusion 2115, buffer breaking angle 2116, snow-blocking plate 212, first fixed edge 213, first adjusting tooth 2131, inclined side 214, inclined side 215, adjustable clamp 22, second clamping opening 221, second upper clamping edge 2211, second lower clamping edge 2212, snap-in turning edge 2213, second inner side edge 2214, second fixed edge 222, second adjusting tooth 2221, fixing bolt 23; snow-blocking pressing device 300, snow-blocking pressing block 31, snow-blocking part 311, upper insertion part 312, upper pressing edge 313, snow-blocking surface 314, friction pattern 315, vertical surface 316, snow-breaking angle 317, strengthening cavity 318, lower pressing block 32, lower insertion part 321, lower pressing edge 322, threaded hole 323, snap-in protrusion 324, groove 325, recess 326, fastening screw 33.

Detailed implementation manners

[0050] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0051] 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.

[0052] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0053] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0054] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0055] Referring to the prior art, the photovoltaic module is rectangular, with a rectangular frame provided around it. And, as Figure 4 shown, the conventional frame 11 has a surface A 111, a surface B 112 and a surface C 113. An installation groove is provided on the lower side of the surface A, and a cavity is provided inside the surface B. The surface C 113 extends towards the inside of the photovoltaic module to form an extension edge 1131. In a photovoltaic system, multiple photovoltaic modules can be arranged in a rectangular array, or only a single photovoltaic module can be provided. The snow blocking device in the prior art is installed on the front side frame of the photovoltaic module. Since the photovoltaic module is inclined, the snow slides down from top to bottom, so it can also be said to be installed on the lower side frame of the photovoltaic module.

[0056] The height of the existing photovoltaic module frame varies from 30 to 35 cm. In order to solve the problem that the existing snow blocking device cannot adapt to the installation of different frame heights. Referring to Figures 1 to 10As shown in the figure, the present utility model provides a snow blocking system installed in a photovoltaic system, which includes an adjustable snow blocking device 200, which includes a snow blocking clamp 21 and an adjustable clamp 22 fixed together. The snow blocking clamp 21 is connected to the A surface of the frame, and the snow blocking clamp 21 is provided with a snow blocking plate 212. The adjustable clamp 22 is connected to the extension edge 1131. A height adjustment structure is provided between the snow blocking clamp 21 and the adjustable clamp 22 for adjusting the relative height of the adjustable clamp 22 and the snow blocking clamp 21, so that the snow blocking device can be fixed to frames of different heights through the adjustment of the height adjustment structure.

[0057] In the above technical solution, the snow blocking clamp is connected to the A surface of the frame, and the adjustable clamp is connected to the extension edge. Therefore, when the height of the frame changes, there is no need to replace the snow blocking device. Only the relative height between the snow blocking clamp and the adjustable clamp needs to be adjusted through the height adjustment structure. After the height adjustment is completed, the snow blocking clamp and the adjustable clamp are fixed together to keep this height unchanged and at the same time keep the fixation with the frame. Thus, through the adjustment of the height adjustment structure, the snow blocking device can be fixed to frames of different heights.

[0058] In addition, the snow blocking plate can block the snow slowly sliding from the surface of the photovoltaic module and divide the skiing snow, or can break and cut the snow sliding quickly, dividing the large-area sliding snow into multiple small pieces of snow, minimizing the damage caused by the sliding of the snow accumulation to the greatest extent.

[0059] As an implementation manner, as Figures 1 to 3 and Figure 6 shown, the height adjustment structure includes a first adjustment tooth 2131 arranged vertically on the snow blocking clamp 21 and a second adjustment tooth 2221 arranged vertically on the adjustable clamp 22, and the first adjustment tooth 2131 and the second adjustment tooth 2221 are engaged. That is, the first adjustment tooth 2131 and the second adjustment tooth 2221 are inserted, and through the adjustment of the relative position up and down, the function of adapting the snow blocking device to the height of different photovoltaic module frames is realized; and after the first adjustment tooth 2131 and the second adjustment tooth 2221 are inserted, they are engaged in a staggered manner in the up and down direction. Since the snow blocking clamp 21 and the adjustable clamp 22 are fixed together, the up and down positions are also reliably fixed at the same time and are not easy to loosen.

[0060] It can be understood that the first adjustment tooth 2131 and the second adjustment tooth 2221 can also be replaced by other similar up and down staggered engagement structures.

[0061] As Figure 2As shown in the figure, the snow baffle fixture 21 is provided with a first clamping opening 211. The first clamping opening 211 has a first upper clamping edge 2111, a first lower clamping edge 2113, and a first inner side edge 2112 connecting the first upper clamping edge 2111 and the first lower clamping edge 2113, thus enclosing a U-shaped clamping opening structure. The first upper clamping edge 2111 cooperates with the A surface of the frame. The first lower clamping edge 2113 is located below the C surface of the frame. The first inner side edge 2112 cooperates with the B surface of the frame. The snow baffle 212 is arranged above the first upper clamping edge. And the frame 11 is within the height range between the first upper clamping edge 2111 and the first lower clamping edge 2113 and can change its height within this range. Of course, even if the height of the frame changes, the first upper clamping edge and the A surface of the frame should always maintain a cooperative relationship. If the height of the frame changes, the gap between its C surface and the first lower clamping edge 2113 will change. Since the adjustable fixture is connected to the extension edge, after the height of the frame changes, the height of the adjustable fixture also changes correspondingly.

[0062] As Figure 3 shown in the figure, the adjustable fixture 22 is provided with a second clamping opening 221. The second clamping opening 221 has a second upper clamping edge 2211, a second lower clamping edge 2212, and a second inner side edge 2214 connecting the second upper clamping edge 2211 and the second lower clamping edge 2212, enclosing a U-shaped clamping opening structure. Among them, the second upper clamping edge 2211 cooperates with the upper side of the extension edge, and the second lower clamping edge 2212 cooperates with the lower side of the extension edge. In this way, the second clamping opening is buckled with the C surface extension edge of the photovoltaic module frame. Even if the height of the frame changes, after the height of the adjustable fixture changes correspondingly, after the snow baffle fixture and the adjustable fixture are fixed together, the snow baffle device is effectively fixed to the photovoltaic module frame.

[0063] In order to reliably fix the snow baffle fixture 21 and the adjustable fixture 22 after adjusting the relative vertical position through the first adjusting teeth 2131 and the second adjusting teeth 2221, the snow baffle fixture 21 is provided with a first fixing edge 213 vertically extending downward from the head end of the first lower clamping edge. The adjustable fixture is provided with a second fixing edge 222 vertically extending downward from the head end of the second lower clamping edge. The first adjusting teeth 2131 are arranged on the first fixing edge, and the second adjusting teeth 2221 are arranged on the second fixing edge. Therefore, the height adjusting structure and the frame fixing structure (including the first clamping opening and the second clamping opening) are vertically staggered, which is convenient for the first adjusting teeth and the second adjusting teeth to be inserted and for the relative vertical position adjustment. And, a fastener for fixing the first fixing edge and the second fixing edge together is provided between the first fixing edge 213 and the second fixing edge 222 after the adjustable fixture adjusts the relative height. While fixing the first fixing edge and the second fixing edge together through the fastener, the snow baffle fixture 21 and the adjustable fixture 22 are also fixed as a whole, so that the snow baffle fixture 21 and the adjustable fixture 22 cooperate to fix the entire snow baffle device 200 to the frame.

[0064] Preferably, the fastener is a fixing bolt 23. A through hole connected to the fixing bolt is provided on the first fixing edge 213, and a waist-shaped hole connected to the fixing bolt is provided on the second fixing edge 222, and the waist-shaped hole extends vertically. When installing the snow baffle device 200, first connect the fixing bolt to the through hole and the waist-shaped hole, but do not tighten the nut temporarily. In this way, the adjustable fixture 22 can be adjusted up and down relative to the snow baffle fixture 21. During the adjustment process, the waist-shaped hole slides up and down along the fixing bolt. After the adjustment is in place, then tighten the nut, so it is convenient to adjust the height.

[0065] It can be understood that the height adjustment structure can also be replaced by other structures. For example, the first adjustment teeth 2131 and the second adjustment teeth 2221 are not provided, and corresponding gear holes are provided on the first fixing edge 213 and the second fixing edge 222 for different heights, that is, a set of gear holes are provided for each height, and the fastener passes through the gear holes for fixation.

[0066] As Figure 5 shown, a fastening structure is provided between the first upper clamping edge and the A surface of the frame, which specifically includes a fastening protrusion 2115 provided on the lower side of the first upper clamping edge and a fastening groove 1111 provided on the A surface of the frame. The fastening protrusion 2115 is fastened in the fastening groove 1111. Therefore, after the snow baffle fixture and the adjustable fixture are fixed together, the fastening structure is fixed to the frame. Compared with connection methods such as fasteners, the fixing method of the fastening structure is more convenient for installation. At the same time, the head end of the first upper clamping edge is provided with an arc-shaped downward turning edge 2114, which can form a fit with the arc-shaped part at the edge of the A surface. It can be understood that as a deformation, threaded holes can be provided on the first upper clamping edge and locking screws are connected. The locking screws are screwed into the threaded holes, and then the locking screws are tightened so that the bottom of the locking screws abuts against the A surface of the frame, which also has the effect of fixed connection.

[0067] Furthermore, a buffering and breaking angle 2116 is provided above the first upper clamping edge. The buffering and breaking angle 2116 is provided at the rear side of the snow baffle. The buffering and breaking angle 2116 is used to absorb the first wave of impact force when the snow slides and break the ice layer at the bottom of the snow, and is beneficial to the subsequent snow baffle to divide the skiing track. The buffering and breaking angle extends obliquely upward from back to front, so that the fastening structure is fastened more tightly under the action of the snow impact force. Therefore, the buffering and breaking angle has the following three functions: (1) Absorb the first wave of impact force when the snow slides, so that when the snow impacts the snow baffle, the impact force is greatly reduced; (2) Break the ice formed at the bottom of the snow; (3) Under the action of the downward impact force of the snow, press the fastening protrusion and the fastening groove tighter, greatly reducing the phenomenon that the snow baffle device falls off under the impact of the snow.

[0068] As Figure 7As shown, the horizontal extension of the first upper clamping edge 2111 extends forward to the front side of the first inner edge and is connected to the snow baffle. The snow baffle is obliquely arranged. There is an inclined edge 214 extending to the snow baffle and connecting to the first lower clamping edge at the front side of the first lower clamping edge. The inclined edge has the same inclination angle as the snow baffle, and the two are connected as a whole. The horizontal extension, the first inner edge 2112 and the inclined edge 214 form a right triangle structure, and a triangular cavity is formed inside. There is a reinforcing rib 215 at the connecting part of the inclined edge and the snow baffle, which is used to increase the strength of the snow baffle. The function of the triangular cavity is to increase the overall strength of the snow baffle fixture and extend the snow baffle outward to a proper position to prevent the snow baffle from blocking the photovoltaic module. The function of the reinforcing rib is to increase the strength of the snow baffle and prevent the snow baffle from being broken by the rapid sliding of snow accumulation.

[0069] As Figure 6 shown, the head end of the second upper clamping edge is provided with a buckling flange 2213. There is a transition part at the connecting part of the extension edge and the frame. The buckling flange 2213 is buckled with the transition part. When tightening the fixing bolt, the force is evenly transmitted to the cavity of the photovoltaic module frame, reducing the occurrence of stress concentration.

[0070] Preferably, the snow baffle fixture 21 and the adjustable fixture 22 are made of aluminum alloy profiles. The aluminum alloy profiles are formed by extrusion, which can realize industrial production, significantly reduce costs, and have high strength, are not easily corroded, and have a long service life.

[0071] It can be understood that for a single photovoltaic module, a snow baffle device 200 is installed at the horizontal middle position of the front side frame of the photovoltaic module. This middle snow baffle device 200 can divide the large pieces of snow sliding on the photovoltaic module at the middle position, avoiding the generation of excessive impact force caused by the simultaneous falling of large areas of snow, and improving safety.

[0072] It can be understood that according to actual needs and actual situations, multiple snow baffle devices 200 can be arranged horizontally along the front side frame of the photovoltaic module, so that large areas of snow can be effectively divided into multiple small pieces of snow, effectively reducing the impact force of the snow sliding.

[0073] It can be understood that when multiple photovoltaic modules are arranged in a rectangular array, only the snow baffle device needs to be installed on the frontmost photovoltaic module. Moreover, among two adjacent photovoltaic modules, the snow baffle device 200 can be installed only at the end of one of the photovoltaic modules, so that the two photovoltaic modules share one snow baffle device 200.

[0074] In the prior art, the height of the frame of a photovoltaic module is generally within the range of 30 cm to 35 cm. An adjustable snow-blocking device installed in a photovoltaic system according to the present utility model can be adjusted in height by an adjustable fixture. Since the height between the first upper clamping edge 2111 and the first lower clamping edge 2113 is 35 cm, it can be adapted to the frame of a photovoltaic module within the height range of 30 cm to 35 cm. As Figure 8 shown, the height of the frame is 35 cm, and at this time, it exactly matches the height between the first upper clamping edge 2111 and the first lower clamping edge 2113 completely, and the adjustable fixture 22 is in the relatively lowest position. As Figure 9 shown, the height of the frame is 33 cm. At this time, there is a 2-cm gap between the first lower clamping edge 2113 and the C surface of the frame, and the adjustable fixture 22 is in the relatively middle position. As Figure 10 shown, the height of the frame is 30 cm. At this time, there is a 5-cm gap between the first lower clamping edge 2113 and the C surface of the frame, and the adjustable fixture 22 is in the relatively highest position. Of course, it can be understood that if the height range of the frame of the photovoltaic module changes outside the range of 30 cm to 35 cm, the corresponding dimensions of the snow-blocking fixture 21 and the adjustable fixture 22 can be changed for adaptation.

[0075] The above-mentioned snow-blocking device is still installed on the frame of the lowermost module in the photovoltaic system. For a photovoltaic system in which multiple photovoltaic modules are arranged in a rectangular array, not only are multiple photovoltaic modules arranged in a column longitudinally, but also multiple photovoltaic modules are arranged in a row horizontally. In order to improve the snow-blocking effect and solve the problem that the snow-blocking effect is not good when the snow-blocking device is only installed on the frame of the lowermost module in the photovoltaic system, as Figures 11 to 18 shown, a snow-blocking pressing block device 300 is further provided in the photovoltaic system. Compared with installing the snow-blocking device on the frame of the lowermost module in the photovoltaic system, the snow-blocking pressing block device 300 is installed between two adjacent photovoltaic modules longitudinally.

[0076] As Figure 12 and Figure 13 shown, the snow-blocking pressing block device 300 includes a snow-blocking pressing block 31 and a pressing block fixing structure for fixing the snow-blocking pressing block 31 to the frame 11 of the photovoltaic module. The snow-blocking pressing block 31 is provided with a snow-blocking portion 311 higher than the A surface of the frame.

[0077] In the above technical solution, the snow-blocking pressing block 31 is provided with a snow-blocking portion higher than the A surface of the frame to block and divide the sliding snow, playing a buffering role. The pressing block fixing structure fixes the snow-blocking pressing block to the frame of the photovoltaic module, preventing the snow-blocking pressing block from falling off due to the impact of the snow.

[0078] In the entire photovoltaic system, not only can multiple snow-blocking pressing block devices be installed horizontally, but also, as Figure 11As shown, a plurality of snow-blocking pressing devices can be arranged in a stepped manner along the longitudinal direction, playing a role of stepped buffering, thereby improving the snow-blocking effect and solving the problem that the existing snow-blocking device is installed on the frame of the lowest component of the photovoltaic system, with poor snow-blocking effect and prone to the risk of large-area snow block falling. All the snow-blocking pressing devices can be arranged in a rectangular array, and the plurality of longitudinally arranged snow-blocking pressing devices can also be staggered in the transverse direction.

[0079] Of course, it is also possible to combine the existing technology with the scheme of installing a snow-blocking device on the frame of the lowest component of the photovoltaic system, such as the above-mentioned snow-blocking device 200, to minimize the damage caused by snow sliding. Finally, the range of snow impact on the ground can be reduced, the threat to the life and property of temporary buildings and passing pedestrians caused by snow impact can be reduced, and the safety risk problem caused by the sliding of large snow masses on the surface of photovoltaic modules can be completely solved.

[0080] Preferably, the snow-blocking part 311 is provided with a snow-blocking surface 314 extending in an arc or obliquely along the longitudinal direction. The function of the snow-blocking part is to block snow. The snow-blocking surface faces the snow sliding upward. The snow-blocking surface is designed in an arc or obliquely. The larger the inclination arc is towards the upper end of the snow-blocking surface, the greater the resistance to the snow. The height of the snow-blocking part is set according to shadow calculation. When the shadow is the longest on the winter solstice, its shadow just does not block the photovoltaic module, so that the snow-blocking pressing block is installed on each photovoltaic module without affecting the power generation of the photovoltaic power generation.

[0081] In one embodiment, a reinforcing cavity 318 can also be arranged in the middle of the snow-blocking pressing block 31. The function of the reinforcing cavity is that the cavity can greatly enhance the strength of the snow-blocking part, thereby increasing the impact resistance of the snow-blocking pressing block. Its function also lies in providing a position space for the installation of fastening screws, which helps to fix the snow-blocking pressing block.

[0082] In one embodiment, the snow-blocking part 311 is provided with a vertical surface 316 on the side opposite to the snow-blocking surface, and a snow-breaking angle 317 is arranged between the vertical surface 316 and the upper end of the snow-blocking surface. The snow-breaking angle is used to absorb the impact force when the snow slides and break the ice at the bottom layer of the snow. The design of the vertical surface is beneficial to make the broken snow fall onto the surface of the lower photovoltaic module, avoiding accumulation at the snow-blocking part.

[0083] As one of the embodiments, as Figure 12 shown, the pressing block fixing structure includes a lower pressing block 32 and a fastener connecting the snow-blocking pressing block 31 and the lower pressing block, and the snow-blocking pressing block and the lower pressing block cooperate to clamp the frame of the photovoltaic module to prevent the snow-blocking pressing block device from loosening and falling off.

[0084] To further ensure the fixing effect of the snow-blocking pressing block, an upper insertion part 312 for inserting between two adjacent photovoltaic modules is provided at the lower part of the snow-blocking pressing block 31. A lower insertion part 321 for inserting between two adjacent photovoltaic modules is provided at the upper part of the lower pressing block 32. The upper insertion part and the lower insertion part have the same width, which is generally consistent with the gap between two longitudinally adjacent photovoltaic modules. Limit surfaces are provided on both sides of the width of the upper insertion part and the lower insertion part. The lower pressing block is pre-placed, then the photovoltaic modules are installed, and finally the snow-blocking pressing block is installed. Therefore, the function of the lower insertion part is to limit the installation gap between two longitudinally adjacent upper and lower rows of photovoltaic modules. When the upper and lower rows of photovoltaic modules are in contact with the lower insertion part, the installation gap is fixed, thereby improving the installation accuracy of the photovoltaic modules. After finally installing the snow-blocking pressing block, the upper insertion part and the lower insertion part cooperate to enhance the longitudinal limiting effect and ensure the relative fixation of the longitudinal positions of two longitudinally adjacent photovoltaic modules.

[0085] Further, upper pressing edges 313 that are respectively pressed against the A surfaces of the frames of the two side photovoltaic modules are provided on the two longitudinally opposite sides of the middle part of the snow-blocking pressing block 31. Lower pressing edges 322 that are respectively pressed against the C surfaces of the frames of the two side photovoltaic modules are provided on the two longitudinally opposite sides of the lower part of the lower pressing block 32. The upper pressing edges and the lower pressing edges jointly clamp the frame under the action of fasteners, so that the snow-blocking device is firmly fixed on the photovoltaic module.

[0086] In addition, friction lines 315 are provided on the bottom surface of the upper pressing edge to increase the friction with the A surface of the frame, so that the connection of the snow-blocking device is more stable and not easy to slide.

[0087] As an implementation manner, the fastener is a fastening screw 33. A threaded hole 323 is provided on the lower pressing block 32, specifically on the lower insertion part 321. A through hole is provided on the snow-blocking pressing block 31, specifically on the upper insertion part 312. The fastening screw 33 passes downward through the through hole and is threadedly connected to the threaded hole 323. The function of the threaded hole is to match the thread on the fastening screw. When the fastening screw is turned, the snow-blocking pressing block and the lower pressing block can be clamped and fixed on the photovoltaic module. And the above-mentioned pressing block fixing structure tightens the fastening screw from above, thus facilitating the installation of the snow-blocking pressing block device.

[0088] As an implementation manner, an anti-rotation structure is provided between the pressing block 32 and the C surface of the frame. Specifically, the anti-rotation structure includes a buckle groove 1132 provided on the C surface of the frame and a buckling protrusion 324 provided on the pressing edge. The buckling protrusion 324 is buckled in the buckle groove 1132. Among them, the buckle groove 1132 is provided at the longitudinal middle position of the C surface of the frame, and the buckling protrusion 324 is provided at the edge of the pressing edge, and a groove 325 is formed between the buckling protrusion and the side surface of the lower insertion portion, so that the anti-rotation structure between the pressing block and the C surface of the frame realizes concave-convex engagement. Of course, the specific setting of the anti-rotation structure between the pressing block and the C surface of the frame can be interchanged. By inserting the buckling protrusion into the buckle groove, during the process of screwing the fastening screw, the pressing block will not rotate with the fastening screw, making the installation more convenient; at the same time, the insertion of the buckling protrusion and the buckle groove makes the pressing block not easy to slide out.

[0089] Further, the bottom surface of the lower insertion portion 321 is higher than the bottom surface of the pressing edge 322, so as to form a concave portion 326, and the head of the fastening screw extends out of the threaded hole and enters the concave portion.

[0090] It can be understood that the pressing block fixing structure is not limited to the above-mentioned matching structure of the pressing block and the snow-blocking pressing block and the frame by the fastener. For example, a buckle or an elastic clamping structure can also be provided on the snow-blocking pressing block to fix it to the frame, so that there is no need to additionally provide a pressing block fixing structure.

[0091] Preferably, the snow-blocking pressing block 31 and the pressing block 32 are made of stainless steel or aluminum alloy profiles. It can realize industrial production, significantly reduce costs, and has high strength, is not easy to rust, and has a long service life.

[0092] As Figures 16 to 18 shown, the above-mentioned snow-blocking pressing block device can be adapted to the photovoltaic module frame within the height range of 30 cm to 35 cm. As Figure 16 shown, the height of the frame is 35 cm. As Figure 17 shown, the height of the frame is 33 cm. As Figure 18 shown, the height of the frame is 30 cm. After the height of the frame changes, the length of the head of the fastening screw extending out of the threaded hole after being tightened will be different. Of course, it can be understood that even if the height range of the photovoltaic module frame changes outside the range of 30 cm to 35 cm, as long as the length of the fastening screw is sufficient.

[0093] The above is only the specific implementation manner of the utility model, but the protection scope 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 drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A snow-blocking pressing device, characterized in that, The snow-blocking pressing block device is installed between two longitudinally adjacent photovoltaic modules. The snow-blocking pressing block device includes a snow-blocking pressing block and a pressing block fixing structure for fixing the snow-blocking pressing block to the frame of the photovoltaic module. The snow-blocking pressing block is provided with a snow-blocking portion higher than the A surface of the frame.

2. The snow-blocking pressing block device according to claim 1, wherein The snow-blocking portion is provided with a snow-blocking surface extending in an arc or obliquely in the longitudinal direction.

3. The snow-blocking pressing block device according to claim 2, characterized in that, The snow-blocking portion is provided with a vertical surface on the side opposite to the snow-blocking surface, and a snow-breaking angle is provided between the vertical surface and the upper end of the snow-blocking surface.

4. The snow-blocking pressing block device according to claim 1, characterized in that, The lower part of the snow-blocking pressing block is provided with an upper insertion portion inserted between two adjacent photovoltaic modules; and / or, the middle part of the snow-blocking pressing block is provided with upper pressing edges respectively pressing on the A surfaces of the frames of the two side photovoltaic modules on the longitudinal opposite sides.

5. The snow-blocking pressing block device according to claim 1, characterized in that, The pressing block fixing structure includes a lower pressing block and a fastener connecting the snow-blocking pressing block and the lower pressing block, and the snow-blocking pressing block and the lower pressing block cooperate to clamp the frame of the photovoltaic module.

6. The snow-blocking pressing block device according to claim 5, characterized in that, The upper part of the lower pressing block is provided with a lower insertion portion inserted between two adjacent photovoltaic modules; and / or, the lower part of the lower pressing block is provided with lower pressing edges respectively pressing on the C surfaces of the frames of the two side photovoltaic modules on the longitudinal opposite sides.

7. The snow blocking and pressing block device according to claim 6, characterized in that, An anti-rotation structure is provided between the lower pressing edge and the C surface of the frame.

8. A snow blocking and pressing device according to claim 7, characterized in that, The anti-rotation structure includes a buckle groove provided on the C surface of the frame and a buckling protrusion provided on the lower pressing edge, and the buckling protrusion is buckled in the buckle groove.

9. The snow-blocking pressing block device according to claim 5, wherein, The fastener is a fastening screw. A threaded hole is provided on the lower pressing block, and a through hole is provided on the snow-blocking pressing block. The fastening screw passes downward through the through hole and is threadedly connected to the threaded hole; and / or, the snow-blocking pressing block and the lower pressing block are made of stainless steel or aluminum alloy profiles.

10. A photovoltaic system, comprising photovoltaic modules arranged in an array, characterized in that, The snow-blocking pressing block device according to any one of claims 1 to 9 is installed between two longitudinally adjacent photovoltaic modules.

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