Buffer components, single-axis tracking brackets and photovoltaic systems

Abstract

This application discloses a buffer assembly, a single-axis tracking bracket, and a photovoltaic system. The buffer assembly, used in the single-axis tracking bracket of the photovoltaic system, includes: a support block; a soft pad for mounting on top of the support block; and fasteners for mounting the support block onto the purlins of the single-axis tracking bracket. The support block has mounting through holes for the fasteners to pass through, and the soft pad has clearance grooves corresponding to the junction boxes of the photovoltaic modules. The buffer assembly of this application can prevent excessive movement of the photovoltaic modules under pressure, which could lead to risks such as breakage of the glass backsheet, cell breakage, or even module explosion. It provides good buffering protection, ensures overall structural strength and stability, and is convenient, quick, efficient, and offers high safety, stability, and reliability.

Description

Technical Field

[0001] This application relates to photovoltaic systems, specifically to a buffer component, a single-axis tracking bracket, and a photovoltaic system. Background Technology

[0002] Single-axis tracking brackets drive the rotation of photovoltaic (PV) modules via a pivot (such as a purlin), ensuring the PV panels follow the sun throughout the day and maximizing the power generation of the PV system. They are a crucial component of any PV system. PV modules are typically fixed to the purlins of the single-axis tracking bracket via PV frames. When strong winds, rain, or snow cause significant loads on the front of the PV modules, the center and edges of the modules will shift downwards due to pressure. Excessive displacement of the junction box in the center of the module can cause it to press against the purlin. If the movement is too large under continuous pressure, the stress around the junction box will be high, potentially leading to cracks in the glass backsheet, broken cells, or even the entire PV module exploding. However, existing single-axis tracking brackets typically use simple buffer blocks, which have poor cushioning effects, are cumbersome to install, time-consuming, labor-intensive, and inefficient. The pivot and buffer block are also prone to relative rotation, failing to effectively reduce the risks of cell breakage and module explosion, resulting in low safety, stability, and reliability. Utility Model Content

[0003] The purpose of this application is to propose a buffer component, a single-axis tracking bracket, and a photovoltaic system to avoid risks such as glass backsheet breakage, cell breakage, or even photovoltaic module explosion caused by excessive movement of the photovoltaic module under pressure. It has good buffer protection effect, can also ensure the overall structural strength and stability, is easy and quick to operate, has high efficiency, and has high safety, stability and reliability.

[0004] To solve at least one of the above-mentioned technical problems, the technical solution of this application is as follows:

[0005] According to a first aspect of this application, a buffer assembly is provided for a single-axis tracking bracket of a photovoltaic system, comprising: a support block; a soft pad for being disposed on the top of the support block; and fasteners for mounting the support block on a purlin of the single-axis tracking bracket; wherein the support block is provided with a mounting through hole for the fastener to pass through, and the soft pad is provided with a clearance groove corresponding to the junction box of the photovoltaic module.

[0006] In one possible implementation of the first aspect described above, the middle of the cushion block is recessed downward to form a relief groove, and the top of the support block is provided with a fitting groove for engaging with the middle of the cushion block.

[0007] In one possible implementation of the first aspect described above, plate-shaped connecting portions are formed on both sides of the clearance groove, and two first supporting planes are provided on the top of the support block, located on both sides of the fitting groove and corresponding to the two plate-shaped connecting portions. The clearance groove passes through the pad block along the axial direction of the purlin, and the fitting groove passes through the support block along the axial direction of the purlin.

[0008] In one possible implementation of the first aspect described above, the upper surfaces of the two plate-shaped connecting parts are flush and respectively form a second support plane, with each second support plane having chamfered or rounded corners around its perimeter.

[0009] In one possible implementation of the first aspect described above, the lower surface of each plate-shaped connecting part is provided with a downwardly protruding limiting connecting part, and each first support plane is provided with a limiting groove for cooperating with the limiting connecting part.

[0010] In one possible implementation of the first aspect described above, the length direction of each limiting connection and the length direction of each limiting groove are consistent with the length direction of the clearance groove.

[0011] In one possible implementation of the first aspect described above, each limiting groove extends through the support block along the axial direction of the purlin, and the cross-section of each limiting groove and each limiting connection part perpendicular to its length direction is inverted T-shaped.

[0012] In one possible implementation of the first aspect described above, the bottom of the support block is provided with a positioning structure for cooperating with the purlin.

[0013] In one possible implementation of the first aspect described above, the positioning structure is a positioning block, which is used to cooperate with a positioning groove provided on the purlin. The length direction of the positioning groove is consistent with the axial direction of the purlin, and the positioning block can slide along the length direction of the positioning groove.

[0014] In one possible implementation of the first aspect described above, the bottom of the support block is provided with a mating surface for cooperating with the purlin, and the positioning block is disposed on the mating surface.

[0015] In one possible implementation of the first aspect mentioned above, the purlin is cylindrical, the fastener is an annular clamp, and the mounting through hole is arc-shaped and close to the bottom of the support block to match the fastener.

[0016] In one possible implementation of the first aspect above, the mating surface is an arc-shaped surface that penetrates the support block along the axial direction of the purlin. Arc-shaped portions are formed on both sides of the mating surface at the bottom of the support block. Grooves are respectively provided in the middle of both sides of the support block along the axial direction of the purlin. The grooves penetrate along the axial direction of the purlin. The cross-section of the support block perpendicular to the axial direction of the purlin is X-shaped.

[0017] In one possible implementation of the first aspect described above, the support block is provided with a porous structure on each of its two end faces along the axial direction of the purlin.

[0018] According to a second aspect of this application, a single-axis tracking bracket is provided, including the buffer assembly described in the first aspect.

[0019] According to a third aspect of this application, a photovoltaic system is provided, including the single-axis tracking bracket described in the second aspect above.

[0020] The above-mentioned technical solution of this application has at least one of the following beneficial effects:

[0021] According to the buffer assembly of this application, the support block is provided with mounting through holes for fasteners to pass through, and the soft pad is provided with a clearance groove corresponding to the junction box of the photovoltaic module. The soft pad is located on the top of the support block. The photovoltaic module is installed on the purlin of the single-axis tracking bracket. The fasteners pass through the mounting through holes on the support block to install the support block on the purlin of the single-axis tracking bracket. The support block has a certain degree of elasticity and rigidity, which not only plays a buffering role but also has a certain supporting force, ensuring the structural strength and stability of the buffer assembly. When encountering strong winds, rain, snow, or other conditions that cause the front of the photovoltaic module to bear a large load and move, the glass back sheet of the photovoltaic module contacts the top of the soft pad. The stress at the contact point is small, achieving elastic buffer protection for the glass back sheet of the photovoltaic module. Furthermore, the junction box is located in the clearance groove and does not contact the clearance groove, so that the junction box is in a suspended state, thereby avoiding the risks of photovoltaic module glass back sheet breakage, cell breakage, or even photovoltaic module explosion. It effectively reduces the probability of product breakage and explosion, is convenient and quick to operate, saves time and labor, has high efficiency, and has high safety, stability, and reliability.

[0022] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of a buffer component according to one embodiment of this application;

[0025] Figure 2 This is a three-dimensional structural diagram of a buffer component according to one embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the assembly structure of a single-axis tracking rotating bracket and a photovoltaic module according to one embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the assembly structure of a single-axis tracking rotating bracket and a photovoltaic module according to one embodiment of this application;

[0028] Figure 5 This is a three-dimensional structural diagram of a support block according to one embodiment of this application;

[0029] Figure 6 This is a front view of a support block according to one embodiment of this application;

[0030] Figure 7 This is a three-dimensional structural diagram of a cushion block according to one embodiment of this application.

[0031] Explanation of the labels in the attached drawings:

[0032] Support block 100; mounting through hole 101; fitting groove 102; first support plane 103; limiting groove 104; positioning structure 105; fitting surface 106; arc-shaped part 107; groove 108; pore structure 109;

[0033] Soft pad block 200; relief groove 201; plate-shaped connecting part 202; second support plane 203; limiting connecting part 204;

[0034] Fastener 300;

[0035] Purlin 400;

[0036] Photovoltaic module 500; junction box 501. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] See Figures 1-7 The diagram schematically illustrates a buffer assembly provided according to an embodiment of this application, primarily used in a single-axis tracking bracket of a photovoltaic system to buffer and protect the photovoltaic module 500 mounted on the single-axis tracking bracket. The buffer assembly of this application may include: a support block 100, a soft pad block 200, and fasteners 300.

[0041] The soft pad 200 is used to be placed on top of the support block 100, and the fastener 300 is used to install the support block 100 on the purlin 400 of the single-axis tracking bracket. The support block 100 is provided with a mounting through hole 101 for the fastener 300 to pass through, and the soft pad 200 is provided with a clearance groove 201 corresponding to the junction box 501 of the photovoltaic module 500. The soft pad 200 can be made of materials with good elasticity, softness, corrosion resistance, aging resistance, and long service life, such as silicone, rubber, urethane, and foam. The support block 100 can be made of materials with a certain degree of elasticity and relatively hardness, such as integrally molded from appropriate engineering plastics or other materials.

[0042] Specifically, the photovoltaic module 500 is installed on the purlin 400 of the single-axis tracking bracket. The fastener 300 passes through the mounting through hole 101 on the support block 100 to install the support block 100 on the purlin 400 of the single-axis tracking bracket. The operation is convenient. The support block 100 has a certain elasticity and hardness, which not only plays a buffering role but also has a certain supporting force, which can ensure the structural strength and stability of the buffer module. When the photovoltaic module 500 moves due to strong winds, rain, snow, or other conditions that cause it to bear a large load on its front side, the glass backsheet of the photovoltaic module 500 comes into contact with the top of the soft pad 200. The stress at the contact point is small, which provides elastic buffer protection for the glass backsheet of the photovoltaic module 500. Furthermore, the junction box 501 is located in the clearance groove 201 and does not come into contact with it, so the junction box 501 is in a suspended state. Even if the junction box 501 comes into contact with the clearance groove 201 of the soft pad 200, it is not easy to cause damage to the junction box 501. This avoids the risks of the photovoltaic module 500's glass backsheet breaking, cell breaking, or even the photovoltaic module 500 exploding, effectively reducing the probability of product breakage and explosion.

[0043] Therefore, the buffer component of this application can avoid risks such as glass backsheet breakage, cell breakage, and even photovoltaic module 500 explosion. It has a good buffer protection effect, effectively reducing the probability of product breakage and explosion, thereby reducing the losses caused by photovoltaic power station explosion. It can also ensure the overall structural strength and stability, and is convenient and quick to operate, saving time and effort, with high efficiency, high safety, stability and reliability, and extending service life.

[0044] In some embodiments, reference Figures 1-2 As shown in Figures 5-7, the center of the cushion block 200 is recessed downward to form a relief groove 201, and the top of the support block 100 is provided with a fitting groove 102 for engaging with the center of the cushion block 200. This results in a more compact and stable structure, reduced volume, and lower costs.

[0045] In some embodiments, reference Figures 1-2 As shown in Figures 5-7, plate-shaped connecting portions 202 are formed on both sides of the clearance groove 201. The top of the support block 100 is provided with two first support planes 103 located on both sides of the fitting groove 102 and corresponding to the two plate-shaped connecting portions 202. The lower surface of the plate-shaped connecting portion 202 is attached to the corresponding first support plane 103. The clearance groove 201 passes through the soft pad block 200 along the axial direction of the purlin 400, and the fitting groove 102 passes through the support block 100 along the axial direction of the purlin 400. Therefore, not only can the junction box 501 of the photovoltaic module 500 be better cleared, but installation and other operations are also simpler, and the structure is stable and reliable.

[0046] Further, refer to Figure 7As shown, the upper surfaces of the two plate-shaped connecting parts 202 are flush and respectively form second support planes 203, with each second support plane 203 having chamfered or rounded corners around its perimeter. Thus, the soft pad 200 can contact the glass backsheet of the photovoltaic module 500 through the two second support planes 203, increasing the contact area and providing better cushioning protection. The chamfered or rounded corner structure also prevents sharp corners from hitting the glass backsheet and causing damage, resulting in higher safety and reliability.

[0047] In some embodiments, reference Figures 1-2 As shown in Figures 5-7, each plate-shaped connecting part 202 has a downwardly protruding limiting connecting part 204 on its lower surface, and each first support plane 103 has a limiting groove 104 for cooperating with the limiting connecting part 204. The limiting connecting part 204 can be fitted with either an overfit or a tight fit, and the length direction of each limiting connecting part 204 and each limiting groove 104 is consistent with the length direction of the clearance groove 201. Thus, the limiting connecting part 204 and the limiting groove 104 cooperate to limit the position of the soft pad block 200, ensuring a more stable and reliable connection between the soft pad block 200 and the support block 100. Furthermore, the support block 100 and the soft pad block 200 can also be integrally formed using methods such as two-color injection molding or 3D printing, or fixedly connected by adhesive or screws.

[0048] Further, refer to Figures 1-2 As shown in Figures 5-7, each limiting groove 104 extends through the support block 100 along the axial direction of the purlin 400. The cross-section of each limiting groove 104 and each limiting connection 204 perpendicular to its length is inverted T-shaped. When the soft pad 200 is connected to the support block 100, the two limiting connections 204 of the soft pad 200 slide into their respective limiting grooves 104 from one end, and then push the limiting connection 204 to continue sliding along the limiting groove 104 until the soft pad 200 moves to the appropriate position. The inverted T-shaped structure prevents the soft pad 200 from moving vertically. This makes operation simpler and faster, the connection more stable, and prevents the soft pad 200 from moving vertically. Furthermore, the cross-section of each limiting groove 104 and each limiting connection 204 perpendicular to its length can also be dovetail-shaped or other suitable shapes.

[0049] In some embodiments, reference Figures 3-6As shown, the bottom of the support block 100 is provided with a positioning structure 105 for cooperating with the purlin 400. The positioning structure 105 prevents relative circumferential rotation between the support block 100 and the purlin 400, and is particularly suitable for cylindrical purlins 400. For example, the positioning structure 105 is a positioning block, which is used to cooperate with a positioning groove (not shown in the figure) provided on the purlin 400. The length direction of the positioning groove is consistent with the axial direction of the purlin 400, and the positioning block can slide along the length direction of the positioning groove.

[0050] When the support block 100 is connected to the purlin 400, the positioning block of the support block 100 is inserted into the positioning groove on the purlin 400. Then, the positioning block slides along the positioning groove, causing the support block 100 to move to the position corresponding to the junction box 501 of the photovoltaic module 500. Then, the fastener 300 passes through the mounting through hole 101 on the support block 100 to fix the support block 100 onto the purlin 400 of the single-axis tracking bracket. This prevents relative circumferential rotation between the support block 100 and the purlin 400, making the structure more stable and reliable, the operation more convenient and quick, and the safety and reliability higher.

[0051] In some embodiments, reference Figures 5-6 As shown, the bottom of the support block 100 is provided with a mating surface 106 for cooperating with the purlin 400, and a positioning block is disposed on the mating surface 106. This not only ensures a tighter and more stable connection between the support block 100 and the purlin 400, but also makes the structure more compact, and the positioning block also improves the structural strength of the support block 100.

[0052] In some embodiments, reference Figures 1-4 As shown, the purlin 400 is cylindrical, the fastener 300 is an annular clamp, and the mounting through hole 101 is arc-shaped and located near the bottom of the support block 100 to mate with the fastener 300. This facilitates better clamping of the support block 100 onto the purlin 400, resulting in higher stability and reliability. Furthermore, those skilled in the art will understand that the purlin 400 and the clamp can also be other suitable shapes.

[0053] For example, refer to Figures 3-6 As shown, the purlin 400 is cylindrical, the fastener 300 is an annular clamp, the contact surface 106 is an arc-shaped surface that penetrates the support block 100 along the axial direction of the purlin 400, and the contact groove 102 is also an arc-shaped groove. Arc-shaped portions 107 are formed on both sides of the contact surface 106 at the bottom of the support block 100. Grooves 108 are respectively provided in the middle of both sides of the support block 100 along the axial direction of the purlin 400, and the grooves 108 penetrate along the axial direction of the purlin 400. The cross-section of the support block 100 perpendicular to the axial direction of the purlin 400 is X-shaped. Therefore, not only is the structure more compact and stable, reducing the volume, but the elastic buffering performance of the support block 100 is also improved, resulting in better buffering protection.

[0054] In some embodiments, reference Figures 1-2 As shown in Figures 5 and 6, the support block 100 has a perforated structure 109 on each of its two end faces along the axial direction of the purlin 400. The perforated structure 109 includes multiple holes extending along the axial direction of the purlin 400, each hole not passing through the mounting through hole 101 and the clearance groove 201. This not only ensures the structural strength of the support block 100, but also reduces weight, material usage, and cost through the perforated structure 109.

[0055] According to an embodiment of this application, a single-axis tracking bracket is also provided, mainly used in photovoltaic systems. By driving the photovoltaic module 500 to rotate, the solar panels of the photovoltaic module 500 can follow the sun all day, maximizing the power generation of the photovoltaic system. (Reference) Figures 3-4 As shown, the single-axis tracking bracket of this application includes a buffer assembly of any of the above embodiments. The buffer assembly is disposed on the purlin 400 of the single-axis tracking bracket, and the photovoltaic module 500 is mounted on the purlin 400. Other mechanisms of the single-axis tracking bracket can adopt corresponding mechanisms in the prior art, which will not be described in detail here.

[0056] refer to Figures 3-4 As shown in the illustration, a photovoltaic system is also provided according to an embodiment of this application, including the aforementioned single-axis tracking bracket. Other components of the photovoltaic system can employ corresponding mechanisms from the prior art, which will not be elaborated upon here.

[0057] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0058] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A buffer component, characterized in that, Single-axis tracking brackets for photovoltaic systems include: Support block (100); A cushion block (200) is provided on top of the support block (100); Fasteners (300) are used to mount the support block (100) onto the purlin (400) of the single-axis tracking bracket; The support block (100) is provided with a mounting through hole (101) for the fastener (300) to pass through, and the soft pad block (200) is provided with a clearance groove (201) corresponding to the junction box (501) of the photovoltaic module (500).

2. The buffer assembly according to claim 1, characterized in that, The middle part of the soft pad (200) is recessed downward to form the relief groove (201), and the top of the support block (100) is provided with a fitting groove (102) for cooperating with the middle part of the soft pad (200). The clearance groove (201) has plate-shaped connecting parts (202) formed on both sides. The top of the support block (100) is provided with two first support planes (103) located on both sides of the fitting groove (102) and connected to the two plate-shaped connecting parts (202) one by one. The clearance groove (201) passes through the pad block (200) along the axial direction of the purlin (400), and the fitting groove (102) passes through the support block (100) along the axial direction of the purlin (400).

3. The buffer assembly according to claim 2, characterized in that, The upper surfaces of the two plate-shaped connecting parts (202) are flush and respectively form a second support plane (203), and the perimeter of each second support plane (203) is chamfered or rounded.

4. The buffer assembly according to claim 2, characterized in that, Each of the plate-shaped connecting parts (202) has a downwardly protruding limiting connecting part (204) on its lower surface, and each of the first support planes (103) has a limiting groove (104) for cooperating with the limiting connecting part (204); The length direction of each of the limiting connection parts (204) and the length direction of each of the limiting grooves (104) are consistent with the length direction of the clearance groove (201); Each of the limiting grooves (104) passes through the support block (100) along the axial direction of the purlin (400), and each of the limiting grooves (104) and each limiting connection (204) has an inverted T-shaped cross section perpendicular to its length direction.

5. The buffer assembly according to claim 2, characterized in that, The bottom of the support block (100) is provided with a positioning structure (105) for cooperating with the purlin (400).

6. The buffer assembly according to claim 5, characterized in that, The positioning structure (105) is a positioning block, which is used to cooperate with the positioning groove provided on the purlin (400). The length direction of the positioning groove is consistent with the axial direction of the purlin (400), and the positioning block can slide along the length direction of the positioning groove.

7. The buffer assembly according to claim 6, characterized in that, The bottom of the support block (100) is provided with a mating surface (106) for cooperating with the purlin (400), and the positioning block is disposed on the mating surface (106).

8. The buffer assembly according to claim 7, characterized in that, The purlin (400) is cylindrical, the fastener (300) is an annular clamp, and the mounting through hole (101) is an arc shape that matches the fastener (300) and is close to the bottom of the support block (100). The contact surface (106) is an arc-shaped surface and penetrates the support block (100) along the axial direction of the purlin (400). Arc-shaped portions (107) are formed on both sides of the contact surface (106) at the bottom of the support block (100). Grooves (108) are respectively provided in the middle of both sides of the support block (100) along the axial direction of the purlin (400). The grooves (108) penetrate along the axial direction of the purlin (400). The cross section of the support block (100) perpendicular to the axial direction of the purlin (400) is X-shaped. The support block (100) has a porous structure (109) on each of its two end faces along the axial direction of the purlin (400).

9. A single-axis tracking bracket, characterized in that, For use in photovoltaic systems, including the buffer component as described in any one of claims 1 to 8.

10. A photovoltaic system, characterized in that, Includes the single-axis tracking bracket as described in claim 9.

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