Buffer mechanism, single-axis tracking support and photovoltaic system
By designing a combination of buffer blocks and fasteners on the single-axis tracking bracket, the problem of photovoltaic modules being prone to breakage under extreme weather conditions has been solved, enabling more efficient and safer installation and use, and improving the reliability and stability of the photovoltaic system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGAO (WUXI) PHOTOVOLTAIC TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-26
Smart Images
Figure CN224414212U_ABST
Abstract
Description
Technical Field
[0001] This application relates to photovoltaic systems, specifically to a buffer mechanism, 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 PV module can cause it to press against the purlins. 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 bulky, and are cumbersome to install, time-consuming, labor-intensive, and inefficient. The pivot and buffer block are also prone to relative circumferential rotation, failing to effectively reduce the risks of cell breakage and PV module explosion, resulting in low safety, stability, and reliability. Utility Model Content
[0003] The purpose of this application is to propose a buffer mechanism, 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. Furthermore, the technical solution of this application can reduce the height of the buffer mechanism, while being convenient and quick to operate, saving time and effort, significantly improving efficiency, and enhancing 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 mechanism is provided for a single-axis tracking bracket of a photovoltaic system, comprising: a buffer block; and fasteners for mounting the buffer block on a purlin of the single-axis tracking bracket; wherein the top of the buffer block is provided with a groove for the fastener to pass through and a clearance groove corresponding to the junction box of the photovoltaic module, the groove penetrating the buffer block in a horizontal direction.
[0006] In one possible implementation of the first aspect above, the fastener is a clamp, the clearance groove is located above the fastener, the groove is arranged along the circumferential direction of the purlin, the clearance groove is arranged along the axial direction of the purlin, and the middle part of the groove intersects with the middle part of the clearance groove.
[0007] In one possible implementation of the first aspect described above, the purlin is cylindrical, the fastener is annular, the groove is close to the bottom of the buffer block, and its bottom surface is an arc shape that matches the fastener.
[0008] In one possible implementation of the first aspect described above, the top of the buffer block forms a first support plane, and the four sides of the first support plane are chamfered or rounded.
[0009] In one possible implementation of the first aspect described above, a porous structure is provided on the side of the buffer block.
[0010] In one possible implementation of the first aspect described above, the size of the buffer block gradually decreases from top to bottom.
[0011] In one possible implementation of the first aspect above, the buffer mechanism of this application further includes: a soft pad block disposed on the top of the buffer block; wherein the soft pad block is provided with a clearance through hole corresponding to the groove and the clearance slot, the top of the soft pad block forms a second support plane, and the four sides of the second support plane are chamfered or rounded.
[0012] In one possible implementation of the first aspect described above, the bottom of the buffer 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 buffer block is provided with a mating surface for cooperating with the purlin, and the positioning block is disposed on the mating surface.
[0015] According to a second aspect of this application, a single-axis tracking bracket is provided for a photovoltaic system, including the buffer mechanism described in the first aspect.
[0016] 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.
[0017] The above-mentioned technical solution of this application has at least one of the following beneficial effects:
[0018] According to the buffer mechanism of this application, the top of the buffer block is provided with a groove for fasteners to pass through and a clearance groove corresponding to the junction box of the photovoltaic module. The groove extends horizontally through the buffer block. The photovoltaic module can be mounted on the purlin of the single-axis tracking bracket using a corresponding support frame and the buffer block. Fasteners pass through the groove on the buffer block to install the buffer block on the purlin of the single-axis tracking bracket. 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 backsheet of the photovoltaic module contacts the top of the buffer block. The buffer block provides elastic cushioning protection, and the junction box is located in the clearance groove and does not contact the clearance groove, keeping the junction box in a suspended state. This avoids the risks of the photovoltaic module's glass backsheet breaking, cell breakage, or even photovoltaic module explosion, effectively reducing the probability of product breakage and explosion. In addition, the groove is located on the top of the buffer block rather than inside, which not only simplifies the manufacturing process but also reduces the overall height of the buffer block. This structure is convenient and quick to operate, saving time and effort, significantly improving efficiency, and enhancing safety, stability, and reliability.
[0019] 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
[0020] 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.
[0021] Figure 1 This is a three-dimensional structural diagram of a buffer mechanism according to one embodiment of this application;
[0022] Figure 2 This is a three-dimensional structural diagram of a buffer mechanism according to another embodiment of this application;
[0023] Figure 3 This is a three-dimensional schematic diagram of the assembly structure of a single-axis tracking rotating bracket and a photovoltaic module according to one embodiment of this application.
[0024] Figure 4 This is a front view schematic diagram of the assembly structure of a single-axis tracking rotating bracket and a photovoltaic module according to one embodiment of this application;
[0025] Figure 5 This is a three-dimensional structural diagram of a buffer block according to one embodiment of this application;
[0026] Figure 6This is a top view of the buffer block according to one embodiment of this application.
[0027] Explanation of the labels in the attached drawings:
[0028] Buffer block 100; Groove 101; Clearance groove 102; First support plane 103; Positioning structure 104; Fitting surface 105; Pore structure 106;
[0029] Fastener 200;
[0030] Soft pad block 300; clearance through hole 301; second support plane 302;
[0031] Purlin 400;
[0032] Photovoltaic module 500; junction box 501. Detailed Implementation
[0033] 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.
[0034] 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.
[0035] 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.
[0036] refer to Figures 1-6 The diagram schematically illustrates a buffer mechanism 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 mechanism of this application may include: a buffer block 100 and fasteners 200.
[0037] The fastener 200 is used to install the buffer block 100 on the purlin 400 of the single-axis tracking bracket. The top of the buffer block 100 is provided with a groove 101 for the fastener 200 to pass through and a clearance groove 102 corresponding to the junction box 501 of the photovoltaic module 500. The groove 101 extends horizontally through the buffer block 100.
[0038] Specifically, the photovoltaic module 500 can be mounted on the purlin 400 of the single-axis tracking bracket using a corresponding support frame and buffer block 100. Fasteners 200 pass through the groove 101 on the buffer block 100 to mount the buffer block 100 on the purlin 400 of the single-axis tracking bracket. When the front of the photovoltaic module 500 is subjected to a large load due to strong winds, rain, snow, or other conditions, causing it to move, the glass back panel of the photovoltaic module 500 contacts the top of the buffer block 100. The buffer block 100 has an elastic buffering protection function. Furthermore, the junction box 501 is located in the clearance groove 102 and does not contact the clearance groove 102, so that the junction box 501 is in a suspended state, thereby avoiding the risks of the photovoltaic module 500's glass back panel breaking, cell breaking, or even the photovoltaic module 500 exploding.
[0039] Therefore, the buffer mechanism of this application can avoid risks such as glass backsheet breakage, cell breakage, and even photovoltaic module 500 explosion, effectively reducing the probability of product breakage and explosion, and thus reducing losses caused by explosions in photovoltaic power plants. Furthermore, the groove 101 is located on the top of the buffer block 100 rather than inside, which not only simplifies the manufacturing process but also reduces the overall height of the buffer block 100. This operation is convenient and quick, saving time and effort, significantly improving efficiency, while enhancing safety, stability, and reliability.
[0040] In some embodiments, reference Figures 1-6 As shown, the fastener 200 is a clamp, and the clearance groove 102 is located above the fastener 200. The groove 101 is arranged along the circumferential direction of the purlin 400, and the clearance groove 102 is arranged along the axial direction of the purlin 400. The middle part of the groove 101 intersects with the middle part of the clearance groove 102, for example... Figure 6 As shown in the top view, the groove 101 and the clearance groove 102 can be roughly cross-shaped. This design makes the structure more compact and stable, reduces the volume of the buffer block 100, and makes operation more convenient.
[0041] For example, refer to Figures 1-6 As shown, the purlin 400 is cylindrical, and the fastener 200 is an annular clamp. The groove 101 is located near the bottom of the buffer block 100, and its bottom surface is an arc shape that mates with the fastener 200. This design facilitates better fixation of the buffer block 100 to the purlin 400 by the clamp, 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.
[0042] In some embodiments, reference Figure 1 , 3 As shown in Figure 6, the top of the buffer block 100 forms a first support plane 103, and the four sides of the first support plane 103 are all chamfered or rounded. This design increases the contact area with the glass backsheet of the photovoltaic module 500 through the first support plane 103, ensuring that the buffer block 100 provides better cushioning and protection for the photovoltaic module 500. The chamfered or rounded corners of the first support plane 103 also prevent sharp corners from hitting the glass backsheet and causing damage, thus improving safety and reliability.
[0043] In some embodiments, reference Figures 1-2 As shown in Figure 5, a porous structure 106 is provided on the side of the buffer block 100. For example, the buffer block 100 has a porous structure 106 on each of its two end faces along the axial direction of the purlin 400. The porous structure 106 includes a plurality of holes extending along the axial direction of the purlin 400, and each hole does not pass through the groove 101 and the clearance groove 102. This design not only ensures the structural strength of the buffer block 100, but also reduces the weight, material usage, and cost through the porous structure 106.
[0044] In some embodiments, reference Figure 5 As shown, the size of the buffer block 100 gradually decreases from top to bottom, thereby ensuring that the contact surface between the buffer block 100 and the photovoltaic module 500 is larger, the structure is more stable, and the buffer protection effect is better.
[0045] In some embodiments, reference Figure 2As shown, the buffer mechanism of this application further includes a soft pad 300. The soft pad 300 is disposed on the top of the buffer block 100. The soft pad 300 is provided with clearance through holes 301 corresponding to the groove 101 and clearance groove 102. The top of the soft pad 300 forms a second support plane 302, and the four sides of the second support plane 302 are chamfered or rounded. The soft pad 300 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 buffer block 100 can be made of materials with certain elasticity and relatively hardness, such as integrally molded from appropriate engineering plastics or other materials. The buffer block 100 and the soft pad 300 can be integrally molded by two-color injection molding, 3D printing, etc., or fixedly connected by adhesive or screws. With this configuration, the buffer block 100 has a certain degree of elasticity and hardness, which not only plays a buffering role but also provides a certain supporting force, ensuring the structural strength and stability of the buffer mechanism. Furthermore, the stress at the contact point between the soft pad 300 and the glass backplate of the photovoltaic module 500 is relatively small, which can better buffer and protect against risks such as glass backplate breakage, cell breakage, or even photovoltaic module 500 explosion, thus extending the service life. The chamfered or rounded corner structure can also prevent sharp corners from hitting the glass backplate and causing damage, making it safer and more reliable.
[0046] In some embodiments, reference Figures 1-2 As shown in Figure 5, the bottom of the buffer block 100 is provided with a positioning structure 104 for cooperating with the purlin 400. The positioning structure 104 prevents relative circumferential rotation between the buffer block 100 and the purlin 400, and is particularly suitable for cylindrical purlins 400. For example, the positioning structure 104 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.
[0047] When the buffer block 100 is connected to the purlin 400, the positioning block of the buffer block 100 is inserted into the positioning groove on the purlin 400. Then, the positioning block slides along the positioning groove, causing the buffer block 100 to move to the position corresponding to the junction box 501 of the photovoltaic module 500. Then, the annular clamp passes through the groove 101 on the buffer block 100, fixing the buffer block 100 onto the purlin 400 of the single-axis tracking bracket. This design prevents relative circumferential rotation between the buffer block 100 and the purlin 400, resulting in a more stable and reliable structure, more convenient and faster operation, and higher safety and reliability.
[0048] Further, refer to Figures 1-2As shown in Figure 5, the bottom of the buffer block 100 is provided with a mating surface 105 for cooperating with the purlin 400. A positioning block is disposed on the mating surface 105, which can be an arc-shaped surface that matches the cylindrical purlin 400. This arrangement not only ensures a tighter and more stable connection between the buffer block 100 and the purlin 400, but also makes the structure more compact. The positioning block also improves the structural strength of the buffer block 100.
[0049] 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 mechanism according to any of the above embodiments. The buffer mechanism is disposed on the purlin 400 of the single-axis tracking bracket, and the photovoltaic module 500 can be mounted on the purlin 400 through a corresponding support frame and buffer block 100. Other mechanisms of the single-axis tracking bracket can adopt corresponding mechanisms in the prior art, which will not be described in detail here.
[0050] 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.
[0051] 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.
[0052] 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 mechanism, characterized in that, Single-axis tracking brackets for photovoltaic systems include: Buffer block (100); Fasteners (200) are used to mount the buffer block (100) onto the purlin (400) of the single-axis tracking bracket; The top of the buffer block (100) is provided with a groove (101) for the fastener (200) to pass through and a clearance groove (102) for the junction box (501) of the photovoltaic module (500). The groove (101) extends horizontally through the buffer block (100).
2. The buffer mechanism according to claim 1, characterized in that, The fastener (200) is a clamp, the clearance groove (102) is located above the fastener (200), the groove (101) is arranged along the circumferential direction of the purlin (400), the clearance groove (102) is arranged along the axial direction of the purlin (400), and the middle part of the groove (101) intersects with the middle part of the clearance groove (102).
3. The buffer mechanism according to claim 2, characterized in that, The purlin (400) is cylindrical, the fastener (200) is annular, and the groove (101) is close to the bottom of the buffer block (100) and its bottom surface is an arc shape that matches the fastener (200).
4. The buffer mechanism according to claim 1, characterized in that, The top of the buffer block (100) forms a first support plane (103), and the first support plane (103) has chamfers or rounded corners on all four sides. The buffer block (100) has a porous structure (106) on its side; The size of the buffer block (100) gradually decreases from top to bottom.
5. The buffer mechanism according to claim 1, characterized in that, Also includes: A cushion block (300) is disposed on top of the buffer block (100); The soft pad (300) is provided with a clearance through hole (301) corresponding to the groove (101) and the clearance groove (102), and the top of the soft pad (300) forms a second support plane (302), and the second support plane (302) has chamfers or rounded corners around its perimeter.
6. The buffer mechanism according to claim 1, characterized in that, The bottom of the buffer block (100) is provided with a positioning structure (104) for cooperating with the purlin (400).
7. The buffer mechanism according to claim 6, characterized in that, The positioning structure (104) 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.
8. The buffer mechanism according to claim 7, characterized in that, The bottom of the buffer block (100) is provided with a mating surface (105) for cooperating with the purlin (400), and the positioning block is disposed on the mating surface (105).
9. A single-axis tracking bracket, characterized in that, For use in photovoltaic systems, including the buffer mechanism 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.