Photovoltaic panel buffer frame with multi-point flexible support

Abstract

The application provides a photovoltaic panel buffer frame with multi-point flexible support, and relates to the technical field of photovoltaic power generation, which comprises a connecting support, a bearing seat, a first buffer plate and a plurality of flexible support members. The application forms a multi-point distributed support system by arraying a plurality of flexible support members on the first buffer plate, that is, a plurality of discrete flexible support points, each support point independently bears local load, when the photovoltaic panel is subjected to external pressure or impact, the load is dispersed to each support unit, and stress concentration is avoided. Compared with the four-point support or full-surface contact installation in the prior art, the multi-point array structure of the application can make the pressure distribution on the back of the photovoltaic panel more uniform, thereby effectively reducing the risk of hidden cracks of the photovoltaic panel due to local overload.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to a photovoltaic panel buffer frame with multi-point flexible support. Background Technology

[0002] As a clean and renewable energy source, photovoltaic power generation has received increasing attention and application in the context of global energy transition and carbon neutrality goals.

[0003] Photovoltaic power generation, as a clean and renewable energy source, has been widely applied in the global energy transition. As photovoltaic power plant development extends to complex terrains such as mountains, slopes, deep ravines, water bodies, and tidal flats, the issues of installation, fixation, and long-term protection of photovoltaic panels are becoming increasingly prominent. Due to the characteristics of its crystal structure, crystalline silicon modules in photovoltaic panels are prone to microcracks—microscopic cracks invisible to the naked eye—when subjected to external forces. These cracks can lead to performance degradation and even electrical failures. To reduce damage to photovoltaic panels from external impacts, existing technologies have developed support and buffer frames; for example, spring shock absorbers, rubber buffer pads, hydraulic dampers, or flexible spherical buffer devices are installed between the photovoltaic panel and the mounting bracket. However, the above-mentioned existing solutions still have the following shortcomings in actual installation and use: (1) Limited buffering effect. Traditional rigid mounting brackets and photovoltaic panels are mostly rigidly connected. In harsh environments such as strong winds, hail, snow or earthquakes, external impacts and vibrations are directly transmitted to the photovoltaic panel body; (2) Poor adaptability to off-center loads. The force distribution of photovoltaic panels during installation and use is not uniform. Wind loads have a trapezoidal distribution characteristic, snow loads are unevenly distributed, and the gravity distribution of photovoltaic panels is not completely symmetrical. When subjected to off-center load impacts, the force difference of each support point is further amplified. The existing buffer structure does not have the ability to automatically adjust the force of each point, which exacerbates the risk of local overload.

[0004] Therefore, it is necessary to develop a photovoltaic panel buffer frame that can achieve multi-point self-balancing flexible support for off-center load buffering. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a photovoltaic panel buffer frame with multi-point flexible support, which solves the problem that existing photovoltaic panel mounting brackets suffer from uneven stress at each support point under off-center load conditions and cannot achieve multi-point dynamic self-balancing buffering.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A photovoltaic panel buffer frame with multi-point flexible support includes a connecting bracket and a bearing seat mounted on the connecting bracket. The top of the bearing seat forms a receiving area, and a first buffer plate is disposed inside the receiving area. Multiple flexible support members are arranged in an array on the first buffer plate.

[0008] The flexible support component includes:

[0009] Two side frame members are centrally symmetrically distributed; each side frame member includes an integrally formed first inclined portion, arc-shaped portion and second inclined portion, and the arc-shaped portion is located between the first inclined portion and the second inclined portion. The first inclined portion and the second inclined portion both extend outward from the arc-shaped portion, and the projected length of the first inclined portion in the vertical direction is greater than the projected length of the second inclined portion in the vertical direction.

[0010] An elliptical component is located between two corresponding arcuate portions of the two side frame components and abuts against the two arcuate portions.

[0011] A limiting member is rotatably mounted at the central axis of the elliptical member, and the limiting member has an outer arc-shaped member located outside the arc-shaped portion of the side frame member. Two sets of the outer arc-shaped members are symmetrically arranged to limit the outward movement of the arc-shaped portion.

[0012] A preferred technical solution of the present invention: the limiting member includes a first end and an outer arc-shaped member. A connecting post is fixedly connected to the center of the first end. The connecting post passes through a through hole opened at the central axis of the elliptical member. A limiting plate and a limiting clip are connected to the end of the connecting post away from the first end. The outer arc-shaped member is integrally connected to the side edge of the first end.

[0013] A preferred technical solution of the present invention is that the outline of the arc-shaped part is a part of an elliptical curve.

[0014] The preferred technical solution of the present invention is that the material of the elastic block is one of polyurethane elastomer, thermoplastic elastomer or rubber.

[0015] A preferred technical solution of the present invention is that the side frame component is a metal sheet.

[0016] A preferred technical solution of the present invention: the flexible support further includes two elastic blocks, which are disposed between the two side frame members and distributed above and below the elliptical member.

[0017] The preferred technical solution of the present invention is as follows: the connecting bracket includes an angle steel support, which forms a rectangular frame; short support members are fixedly connected to the two corners on the first side of the angle steel support, and long support members are fixedly connected to the two corners on the second side of the angle steel support; the bearing seat is installed at an incline on the top of the short support members and the long support members.

[0018] In a preferred embodiment of the present invention, the bearing support member comprises:

[0019] A frame-mounted main body, with an accommodating area formed above the frame-mounted main body;

[0020] Multiple first frames are fixedly connected in parallel to the bottom of the frame-loaded main body;

[0021] The second frame is fixedly connected to the bottom of multiple first frames, and there are two second frames, which are respectively hinged to the short support and the long support.

[0022] A preferred technical solution of the present invention is as follows: the first buffer plate has multiple positioning ports and wiring grooves; the flexible support is disposed inside the positioning ports.

[0023] A preferred technical solution of the present invention is that the multiple positioning ports are distributed in a rectangular array.

[0024] The present invention has the following beneficial effects:

[0025] 1. This invention forms a multi-point distributed support system by arraying multiple flexible support members on a first buffer plate. This system consists of multiple discrete flexible support points, each independently bearing a local load. When the photovoltaic panel is subjected to external pressure or impact, the load is distributed across the various support units, avoiding stress concentration. Compared to existing technologies using four-point support or full-surface contact installations, the multi-point array structure of this invention enables a more uniform pressure distribution on the back of the photovoltaic panel, effectively reducing the risk of microcracks caused by localized overload.

[0026] 2. The flexible support component of this invention includes two side frame components that are centrally symmetrically distributed. Each side frame component includes an integrally formed first inclined portion, an arc-shaped portion, and a second inclined portion. The projection length of the first inclined portion in the vertical direction is greater than that of the second inclined portion, so that the combined X-shaped structure presents a reverse offset shape with "the upper two ends being higher on the left and lower on the right, and the lower two ends being lower on the left and higher on the right". When the photovoltaic panel is subjected to uneven load due to the shift of the center of gravity or uneven wind or snow load, the side frame component on the side with greater pressure transmits the force to the cross side through the arc-shaped portion. The torque transmission characteristics of the X-shaped structure generate a reverse balancing torque, automatically adjusting the force on each support point, so that the overall force tends to be balanced. Compared with the buffer scheme using independent springs or rubber pads in the prior art, the X-shaped self-balancing structure can achieve adaptive force distribution without external control, which significantly improves the anti-eccentric load capacity of the buffer frame.

[0027] 3. This invention features an elliptical component abutting between the arc-shaped portions of the two side frame members. When the flexible support member is compressed, the arc-shaped portion moves relative to the surface of the elliptical component. The elliptical component has geometric features with different radii of its major and minor axes. The contact point between the arc-shaped portion and the elliptical component changes with the compression stroke, resulting in a continuous change in the lever arm. This produces a gradually increasing stiffness characteristic that increases with the amount of compression. In the initial stage of compression, the stiffness is low and the buffering is gentle, effectively absorbing small vibrations. In the later stage of compression, the stiffness increases, preventing excessive impact from damaging the photovoltaic panel. Compared with the existing technology that uses constant stiffness springs or single-material elastic pads, the gradually increasing stiffness buffer of this invention can ensure comfort under daily light winds and small vibrations, while providing sufficient protection limits under extreme winds, hail, and other strong impacts, balancing buffering flexibility and safety redundancy. Attached Figure Description

[0028] Figure 1 This is a perspective view of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention;

[0029] Figure 2 This is a front view of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention;

[0030] Figure 3 This is a top view of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0031] Figure 4 This is a side view of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0032] Figure 5 This is a perspective view of a flexible support component for a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0033] Figure 6 This is an exploded view of a flexible support component for a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0034] Figure 7 This is a cross-sectional view of a flexible support component of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0035] Figure 8 This is a perspective view of a side frame component of a photovoltaic panel buffer frame with multi-point flexible support proposed in this invention.

[0036] Figure 9 for Figure 7 A magnified view of a portion of point A in the middle.

[0037] Among them, 1. connecting bracket; 2. bearing seat; 3. first buffer plate; 4. flexible support; 101. angle steel support; 102. long support; 103. short support; 201. frame load-bearing main body; 202. first frame; 203. second frame; 3a. wiring trough; 3b. positioning port; 405. limiting component; 406. elliptical component; 4051. first end; 4052. outer arc component; 4053. connecting column; 4054. limiting plate; 4055. limiting clip. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] like Figures 1-9 As shown, this embodiment of the invention provides a photovoltaic panel buffer frame with multi-point flexible support for installing (in an inclined manner) photovoltaic panels / photovoltaic unit modules, which plays a role in buffering and protecting the photovoltaic panels / photovoltaic unit modules; specifically, it includes: a connecting bracket 1, a bearing seat 2, a first buffer plate 3, and multiple flexible support members 4.

[0041] The connecting bracket 1 is a rigid or flexible support component used to support the bearing seat 2, allowing the main body of the bearing seat 2 to be tilted or its angle to be adjustable. The top of the bearing seat 2 forms a receiving area, and a first buffer plate 3 is set inside the receiving area. The first buffer plate 3 is used to protect the back of the photovoltaic panel / photovoltaic unit module. Multiple flexible support components 4 are arrayed on the first buffer plate 3, which support the back of the photovoltaic panel / photovoltaic unit module, forming a multi-point distributed support system, i.e., multiple discrete flexible support points. Each support point independently bears local loads. When the photovoltaic panel is subjected to external pressure or impact, the load is distributed to each support unit, avoiding stress concentration. In the event that several flexible support components 4 located in a certain area fail, the back of the photovoltaic panel / photovoltaic unit module may collide with the first buffer plate 3. The first buffer plate 3 is made of elastic material and can serve as a final installation guarantee.

[0042] Considering that the photovoltaic panel / photovoltaic unit module is in an inclined state during operation, the inclination angle of the photovoltaic panel / photovoltaic unit module installed in specific regions and locations may vary; traditional constant stiffness springs or single-material elastic pads are prone to radial breakage under eccentric loads and impacts, leading to failure of the elastic support unit; based on this, this embodiment specifically designs a flexible support component 4, which specifically includes: two side frame components (a first side frame 401 and a second side frame 402 with identical structures), an elliptical component 406, and a limiting component 405.

[0043] The two side frame members are centrally symmetrically distributed, and each side frame member includes an integrally formed first inclined portion, an arc-shaped portion, and a second inclined portion. The arc-shaped portion is located between the first inclined portion and the second inclined portion. Both the first and second inclined portions extend outward from the arc-shaped portion, and the projected length of the first inclined portion in the vertical direction is greater than the projected length of the second inclined portion in the vertical direction; for example, as... Figure 8 As shown, the first side frame 401 includes an integrally formed first inclined portion 401c, an arc-shaped portion 401b, and a second inclined portion 401a. The first inclined portion 401c and the second inclined portion 401a tilt outward at the same angle. The length of the first inclined portion 401c is designed to be greater than the length of the second inclined portion 401a. A mounting portion 401d is provided at the end of the first inclined portion 401c away from the arc-shaped portion 401b.

[0044] like Figure 7 As shown, after the two side frame members are centrally symmetrically distributed, their corresponding first and second inclined parts form an "X" shaped structure, and the arc-shaped parts correspond to the specific connection positions; the elliptical member 406 is placed between the two corresponding arc-shaped parts of the two side frame members and abuts against the two arc-shaped parts; the major axis of the elliptical member 406 is kept in the vertical direction, and the two arc-shaped parts correspond to the left and right sides of the elliptical member 406. The left and right sides of the elliptical member 406 abut against the two arc-shaped parts, so that the outline of the arc-shaped part is part of an elliptical curve; the limiting member 405 is rotatably installed at the central axis of the elliptical member 406, and the limiting member 405 has an outer arc-shaped member 4052 located outside the arc-shaped part of the side frame member. Two sets of outer arc-shaped members 4052 are symmetrically arranged to limit the outward movement of the arc-shaped part.

[0045] like Figures 7-9As shown, the first inclined portion below the first side frame 401 is the primary first contact point, the second inclined portion below the second side frame 402 is the secondary first contact point, the first inclined portion above the second side frame 402 is the primary second contact point, and the second inclined portion above the first side frame 401 is the secondary second contact point. The load applied by the photovoltaic panel / photovoltaic unit module is transmitted between the top and bottom. If it is a vertical load, the load on the left side is the primary first contact point and the secondary second contact point; the load on the right side is the primary second contact point and the secondary first contact point. Although the structures on the left and right sides are not... Completely symmetrical, yet with consistent stress distribution, resulting in overall balanced stress. If the load is biased towards the left or right, the stress on the left and right sides differs. The side frame member on the side with greater pressure transmits the force to the cross side (corresponding to the elliptical member 406, the limiting member 405, and the positions corresponding to the two arc-shaped parts) through the arc-shaped part. Utilizing the torque transmission characteristics of the X-shaped structure, a reverse balancing torque is generated, automatically adjusting the stress magnitude at each support point to make the overall stress tend to be balanced. Based on the structural design of this embodiment, adaptive force distribution can be achieved without external control, significantly improving the buffer frame's resistance to eccentric loads.

[0046] In one embodiment, the limiting member 405 includes: a first end 4051, a connecting post 4053, an outer arc-shaped member 4052, a limiting plate 4054, and a limiting clip 4055.

[0047] A connecting post 4053 is fixedly connected to the center of the first end 4051. The connecting post 4053 passes through the through hole opened at the central axis of the elliptical member 406. A limiting plate 4054 and a limiting clip 4055 are connected to the end of the connecting post 4053 away from the first end 4051. The limiting plate 4054 is located outside the limiting clip 4055. The two cooperate to limit the connecting post 4053 from leaving the through hole opened at the central axis of the elliptical member 406. An outer arc-shaped member 4052 is integrally connected to the side edge of the first end 4051. The outer arc-shaped member 4052 is used to limit the movement of the two side frame members (the first side frame 401 and the second side frame 402 with the same structure) towards the outside.

[0048] The first end 4051, the connecting post 4053, and the outer arc-shaped component 4052 adopt an integral structure; for example Figure 7 , Figure 9As shown, the outer arc-shaped member 4052 corresponds to a circular reference contour a. Since the shape of the arc-shaped part 401b is limited by the inner support of the elliptical member 406, its shape is also part of an ellipse. When one end of the outer arc-shaped member 4052 abuts against the outer side of the arc-shaped part 401b, the outer arc-shaped member 4052 experiences the least force. When the outer arc-shaped member 4052 needs to slide relative to the outer contour of the arc-shaped part 401b, it will be limited by the outer contour of the arc-shaped part 401b. At this time, the outer arc-shaped member 4052 can continue to move only after undergoing elastic deformation. That is, when the above-mentioned "side frame member on the side with greater pressure transmits the force to the cross side (corresponding to the positions of the elliptical member 406, the limiting member 405, and the two arc-shaped parts)" occurs, the cross side is also an elastic adaptive structure that maintains a stable elastic support force and avoids structural damage.

[0049] In one embodiment, after the two side frame members are centrally symmetrically distributed, their corresponding first and second inclined parts form an "X" shaped structure, and present a reverse offset shape with "the upper two ends being higher on the left and lower on the right, and the lower two ends being lower on the left and higher on the right". When the photovoltaic panel / photovoltaic unit module applies a load between the main first contact point and the main second contact point, the auxiliary first contact point and the auxiliary second contact point do not play a role. At the critical point when the auxiliary first contact point and the auxiliary second contact point play a role, there may be a force impact, the use process is not stable, the buffering effect is not good, and the service life of the structure may be short. Two elastic blocks (correspondingly, the first elastic block 403 and the second elastic block 404) are also designed and set between the two side frame members, and distributed above and below the elliptical member 406.

[0050] like Figure 5 , Figure 6 As shown, the top of the first elastic block 403 and the top of the second side frame 402 are simultaneously connected to the photovoltaic panel / photovoltaic unit module; the bottom of the second elastic block 404 and the bottom of the first side frame 401 are simultaneously connected to the inner bottom of the bearing seat 2; the first elastic block 403 and the second elastic block 404 can stably transmit the force between them to the first contact point and the second contact point of the sub-sub ...

[0051] In one embodiment, the connecting bracket 1 includes: an angle steel support 101, a short support 103, and a long support 102.

[0052] Angle steel support 101 forms a rectangular frame; for example, angle steel support 101 is formed by welding four angle steel pieces, and short support members 103 are fixedly connected at the two corners on the first side of angle steel support 101, and long support members 102 are fixedly connected at the two corners on the second side of angle steel support 101.

[0053] The bearing seat 2 is installed at an angle on the top of the short support 103 and the long support 102. The structural design of the short support 103 and the long support 102 is used to keep the bearing seat 2 in an inclined state.

[0054] In one embodiment, the support member 2 includes: a frame-mounted main body 201, a plurality of first frames 202 and two second frames 203.

[0055] A receiving area is formed above the frame-mounted main body 201; for example, the frame-mounted main body 201 has a bottom plate and side plates located around the perimeter of the bottom plate. The height of the side plates is 4-15cm, which are used to receive and install photovoltaic panels / photovoltaic unit modules. Multiple first frames 202 are fixedly connected in parallel to the bottom of the frame-mounted main body 201. Second frames 203 are fixedly connected to the bottom of the multiple first frames 202. There are two second frames 203, which are respectively hinged to the short support member 103 and the long support member 102.

[0056] In one embodiment, the first buffer plate 3 has multiple positioning openings 3b and wiring grooves 3a; the flexible support member 4 is disposed inside the positioning openings 3b.

[0057] The positioning port 3b is used to position the flexible support 4; for example, multiple positioning ports 3b are distributed in a 4*6 rectangular array, and the corresponding flexible support 4 is also distributed in a 4*6 rectangular array.

[0058] The wiring trough 3a is used to guide and constrain cables; for example, multiple sets of photovoltaic unit modules are installed in the frame body 201, and these photovoltaic unit modules need to be wired, and these wire bundles are guided through the wiring trough 3a.

[0059] In one embodiment, the material of the elastic block is one of polyurethane elastomer, thermoplastic elastomer or rubber, preferably polyurethane elastomer, which has certain high temperature resistance and a longer service life.

[0060] In one embodiment, the side frame is a metal sheet, that is, the side frame is manufactured by bending a strip of metal; for example, alloy steel, stainless steel, spring steel, etc.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic panel buffer frame with multi-point flexible support, characterized in that: The photovoltaic panel buffer frame includes a connecting bracket (1) and a bearing seat (2) mounted on the connecting bracket (1). The top of the bearing seat (2) forms a receiving area, and a first buffer plate (3) is provided inside the receiving area. Multiple flexible support members (4) are arranged in an array on the first buffer plate (3). The flexible support member (4) includes a limiting member (405), an elliptical member (406), and two side frame members. The two side frame members are centrally symmetrically distributed. Each side frame member includes an integrally formed first inclined portion, an arc-shaped portion, and a second inclined portion. The arc-shaped portion is located between the first inclined portion and the second inclined portion. The first inclined portion and the second inclined portion both extend towards the outside of the arc-shaped portion. The projected length of the first inclined portion in the vertical direction is greater than the projected length of the second inclined portion in the vertical direction. The elliptical member (406) is located between the two corresponding arc-shaped portions of the two side frame members and abuts against the two arc-shaped portions. The limiting member (405) is rotatably mounted at the central axis of the elliptical member (406). The limiting member (405) has an outer arc-shaped member (4052) located outside the arc-shaped portion of the side frame member. Two sets of outer arc-shaped members (4052) are symmetrically arranged to limit the outward movement of the arc-shaped portion.

2. A photovoltaic panel buffer frame with multi-point flexible support according to claim 1, characterized in that: The limiting member (405) includes a first end (4051) and an outer arc-shaped member (4052). A connecting post (4053) is fixedly connected to the center of the first end (4051). The connecting post (4053) passes through the through hole opened at the central axis of the elliptical member (406). A limiting plate (4054) and a limiting clip (4055) are connected to the end of the connecting post (4053) away from the first end (4051). The outer arc-shaped member (4052) is integrally connected to the side edge of the first end (4051).

3. A photovoltaic panel buffer frame with multi-point flexible support according to claim 1 or 2, characterized in that: The connecting bracket (1) includes an angle steel support (101), which forms a rectangular frame; short support members (103) are fixedly connected to the two corners on the first side of the angle steel support (101), and long support members (102) are fixedly connected to the two corners on the second side of the angle steel support (101); the bearing seat (2) is installed at an incline on the top of the short support member (103) and the long support member (102).

4. A photovoltaic panel buffer frame with multi-point flexible support according to claim 1 or 2, characterized in that: The first buffer plate (3) has multiple positioning ports (3b) and wiring grooves (3a); the flexible support (4) is disposed inside the positioning ports (3b).

5. A photovoltaic panel buffer frame with multi-point flexible support according to claim 1 or 2, characterized in that: The outline of the arc-shaped portion is part of an elliptical curve.

6. A photovoltaic panel buffer frame with multi-point flexible support according to claim 1 or 2, characterized in that: The side frame component is a metal sheet.

7. A photovoltaic panel buffer frame with multi-point flexible support according to claim 2, characterized in that, Also includes: The flexible support (4) also includes two elastic blocks, which are disposed between the two side frame members and distributed above and below the elliptical member (406).

8. A photovoltaic panel buffer frame with multi-point flexible support according to claim 3, characterized in that, The support member (2) includes a frame-mounted main body (201), a plurality of first frame bodies (202) and two second frame bodies (203). An accommodating area is formed above the frame-mounted main body (201). The plurality of first frame bodies (202) are fixedly connected in parallel to the bottom of the frame-mounted main body (201). The two second frame bodies (203) are fixedly connected to the bottom of the plurality of first frame bodies (202), and the two second frame bodies (203) are respectively hinged to the short support member (103) and the long support member (102).

9. A photovoltaic panel buffer frame with multi-point flexible support according to claim 4, characterized in that: The multiple positioning ports (3b) are arranged in a rectangular array.

10. A photovoltaic panel buffer frame with multi-point flexible support according to claim 7, characterized in that: The material of the elastic block is one of polyurethane elastomer, thermoplastic elastomer, or rubber.

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