Photovoltaic support mounting structure and photovoltaic system
By using an adhesive layer to bond the photovoltaic bracket installation structure to the roof, the problems of wind load resistance and water leakage of rooftop photovoltaic systems on non-load-bearing roofs are solved, achieving stability and structural compatibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JUHE NEW ENERGY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-16
Smart Images
Figure CN224367761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic power generation technology, and more specifically, to a photovoltaic support installation structure and a photovoltaic system. Background Technology
[0002] Rooftop photovoltaic (PV) systems are affected by the structural strength of the roof. For load-bearing roof structures, rooftop PV systems use large counterweights to reduce the impact of wind loads. On non-load-bearing roof structures, rooftop PV systems need to be fixed with bolts, but this method can damage the roof structure, affect its structural strength, and cause leaks. Currently, rooftop PV systems cannot simultaneously address these issues. Utility Model Content
[0003] The purpose of this utility model is to provide a photovoltaic bracket installation structure and a photovoltaic system, which improves the wind load resistance of the photovoltaic bracket installation structure, reduces water leakage when drilling holes in the roof for installation, and allows the photovoltaic bracket installation structure to be used on both load-bearing and non-load-bearing roof structures, thereby improving the stability of the photovoltaic bracket.
[0004] The first aspect of this utility model provides a photovoltaic support mounting structure, which includes:
[0005] Mounting base, wherein a groove is provided on one side of the mounting base;
[0006] A column, one end of which is connected to the side of the mounting base opposite to the groove;
[0007] A connecting component is connected to the end of the column away from the mounting base, and the connecting component is used to connect a photovoltaic bracket.
[0008] An adhesive layer is provided, which fills the groove and is bonded to both the mounting base and the roof.
[0009] In one possible embodiment of this utility model, the column and the mounting base are integrally formed.
[0010] In one possible embodiment of this utility model, the connecting assembly includes a connecting rod and a connector. The connector is used to connect the photovoltaic bracket. The connector is detachably connected to the connecting rod. The column and the mounting base are integrally cast with concrete. At least part of the connecting rod is pre-embedded in the column.
[0011] In one possible embodiment of this utility model, the threaded portion of the connecting rod is threadedly connected to the connecting member.
[0012] In one possible embodiment of this invention, the cross-sectional area of the mounting base gradually decreases in the direction of the mounting base toward the column.
[0013] In one possible embodiment of this utility model, the four corners of the mounting base near the groove extend to form support legs.
[0014] In one possible embodiment of this utility model, the groove wall and the groove bottom are set at an acute angle.
[0015] In one possible embodiment of this utility model, the groove is a frustum structure.
[0016] In one possible embodiment of this utility model, the adhesive strength of the adhesive layer is Q, which satisfies: Q≥1MPa.
[0017] The second aspect of this utility model provides a photovoltaic system, including the photovoltaic support mounting structure described in any of the above embodiments.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a photovoltaic bracket installation structure and photovoltaic system. The column is connected to the mounting base, so that the photovoltaic bracket is installed and connected to the column through the connecting components. The groove of the mounting base is fixed to the roof by an adhesive layer. The groove can increase the bonding area of the adhesive layer to improve the bonding force and improve the wind load resistance of the photovoltaic bracket installation structure. It achieves the purpose of installing and supporting the photovoltaic bracket. There is no need to drill holes in the roof to install the mounting base, which will not affect the overall structural strength of the roof. It also reduces the possibility of water leakage when drilling holes in the roof for installation. The photovoltaic bracket installation structure can be used for both load-bearing and non-load-bearing roof structures, improving the stability of the photovoltaic bracket support. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a side view of the photovoltaic bracket mounting structure provided in some embodiments of the present invention;
[0021] Figure 2 This is an illustration of the application of the photovoltaic support mounting structure provided in some embodiments of this utility model. Figure 1 ;
[0022] Figure 3This is a bottom view of the photovoltaic support mounting structure provided in some embodiments of the present invention;
[0023] Figure 4 This is an illustration of the application of the photovoltaic support mounting structure provided in some embodiments of this utility model. Figure 2 .
[0024] Explanation of key component symbols;
[0025] 100 - Photovoltaic bracket installation structure; 110 - Mounting base; 111 - Groove; 1111 - Groove wall; 1112 - Groove bottom; 112 - Support leg; 120 - Column; 130 - Connecting component; 131 - Connecting rod; 1311 - Threaded part; 132 - Connector; 140 - Adhesive layer; 200 - Roof; 300 - Photovoltaic bracket; X - First direction. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0033] refer to Figure 1 As shown, an embodiment of this application provides a photovoltaic bracket mounting structure 100, which includes a mounting base 110, a column 120, a connecting component 130, and an adhesive layer 140.
[0034] Specifically, in combination Figure 1 and Figure 2 As shown, a groove 111 is provided on one side of the mounting base 110. One end of the column 120 is connected to the side of the mounting base 110 away from the groove 111. The connecting assembly 130 is connected to the end of the column 120 away from the mounting base 110. The connecting assembly 130 is used to connect the photovoltaic bracket 300. Correspondingly, the column 120 is mounted and connected to the mounting base 110, so that the photovoltaic bracket 300 is installed and connected to the column 120 through the connecting assembly 130.
[0035] In this embodiment, the adhesive layer 140 fills the groove 111, and the adhesive layer 140 is bonded to the mounting base 110 and the roof respectively. The groove 111 of the mounting base 110 is bonded and fixed to the roof by the adhesive layer 140. The groove 111 can increase the bonding area of the adhesive layer 140 to improve the bonding force and improve the wind load resistance of the photovoltaic bracket installation structure 100, so as to achieve the purpose of installing and supporting the photovoltaic bracket 300. There is no need to drill holes in the roof to install the mounting base 110, which will not affect the overall structural strength of the roof and reduce the possibility of water leakage when drilling holes in the roof for installation. It can accommodate both load-bearing and non-load-bearing roof structures 200 and improve the stability of the photovoltaic bracket 300.
[0036] Understandably, on load-bearing concrete roofs, the stability of traditional concrete roof photovoltaic (PV) systems typically relies on a large counterweight concrete foundation. However, because the counterweight is placed directly on the concrete roof, the connection between the counterweight and the support structure and modules is susceptible to wind loads, leading to displacement of the overall foundation and reducing the long-term stability and safety of the PV system. On non-load-bearing concrete roofs, due to their limited load-bearing capacity, installing conventional counterweights poses a risk of roof collapse; if the counterweight is too small, the stability of the PV system cannot be guaranteed; and using bolt installation with holes drilled in the roof not only damages the original building structure but may also lead to leakage risks due to poor sealing.
[0037] The inventors of this application discovered during their research that, while existing solutions using roof drilling combined with bolted connections to the counterweight can reduce its weight and limit its displacement, they compromise the integrity of the original building structure and pose a risk of leakage. Therefore, this application's solution optimizes the modular design structure, significantly reducing module weight while ensuring reliability. This allows it to be used on both load-bearing and non-load-bearing roofs, enabling drilling-free installation on roofs, avoiding damage to the roof structure or causing leaks. Furthermore, the fixed installation structure effectively resists wind loads and prevents displacement.
[0038] refer to Figure 1 and Figure 2 As shown, the photovoltaic mounting structure 100 has a first direction X. For example, the first direction X is defined as the height direction of the photovoltaic mounting structure 100. It is understood that the above definitions are only for ease of understanding the relative positional relationships of the various parts in the photovoltaic mounting structure 100 and should not be construed as limitations on this application.
[0039] In one embodiment, optionally, the column 120 and the mounting base 110 are integrally formed, and the column 120 and the mounting base 110 are arranged sequentially along the first direction X. The column 120 extends toward the first direction X. The column 120 and the mounting base 110 are manufactured by integral molding process using a mold, avoiding subsequent splicing or assembly steps, thereby improving the strength and reliability of the overall structure.
[0040] Optionally, the connecting assembly 130 includes a connecting rod 131 and a connector 132. The connector 132 is used to connect the photovoltaic bracket 300. The photovoltaic bracket 300 is installed and fixed through the exposed ends of the connector 132 and the connecting rod 131. The connector 132 and the connecting rod 131 are detachably connected. The column 120 and the mounting base 110 are integrally cast with concrete. At least part of the connecting rod 131 is pre-embedded in the column 120. Embedding the connecting rod 131 in the concrete column 120 eliminates the need for subsequent welding or fixing steps of the connecting rod 131. During the concrete pouring process, the pre-embedded section of the connecting rod 131 is fixed in the casting mold to ensure the positional accuracy of the connecting rod 131 after pouring.
[0041] Furthermore, the threaded portion 1311 of the connecting rod 131 is threadedly connected to the connector 132, enabling relatively quick installation and disassembly of the photovoltaic bracket 300. The connector 132 serves to prevent loosening and provide limiting and fixing functions. For example, the connecting rod 131 is a threaded rod, and the surface thread of the connecting rod 131 is pre-embedded to enhance tensile and shear strength; the connector 132 is a nut.
[0042] In summary, the photovoltaic bracket installation structure 100 connects the column 120 to the mounting base 110, allowing the photovoltaic bracket 300 to be connected to the column 120 via the connecting component 130. The groove 111 of the mounting base 110 is bonded to the roof via the adhesive layer 140. The groove 111 increases the bonding area of the adhesive layer 140 to improve the bonding force and enhance the wind load resistance of the photovoltaic bracket installation structure 100, thus achieving the purpose of installing and supporting the photovoltaic bracket 300. There is no need to drill holes in the roof to install the mounting base 110, which does not affect the overall structural strength of the roof and reduces the risk of water leakage during roof drilling. The photovoltaic bracket installation structure 100 can be used for both load-bearing and non-load-bearing roof structures, improving the stability of the photovoltaic bracket 300.
[0043] refer to Figures 1 to 3 As shown, an embodiment of this application provides another photovoltaic bracket mounting structure 100, which includes a mounting base 110, a column 120, a connecting component 130, and an adhesive layer 140.
[0044] Specifically, in combination Figure 1 and Figure 2 As shown, a groove 111 is provided on one side of the mounting base 110. One end of the column 120 is connected to the side of the mounting base 110 away from the groove 111. The connecting assembly 130 is connected to the end of the column 120 away from the mounting base 110, and the connecting assembly 130 is used to connect the photovoltaic bracket 300. The adhesive layer 140 fills the groove 111 and bonds the mounting base 110 and the roof respectively. Correspondingly, the column 120 is installed and connected to the mounting base 110, so that the photovoltaic bracket 300 is installed and connected to the column 120 through the connecting component 130. The groove 111 of the mounting base 110 is bonded and fixed to the roof by the adhesive layer 140. The groove 111 can increase the bonding area of the adhesive layer 140 to improve the bonding force and improve the wind load resistance of the photovoltaic bracket installation structure 100, so as to achieve the purpose of installing and supporting the photovoltaic bracket 300. There is no need to drill holes in the roof to install the mounting base 110, which will not affect the overall structural strength of the roof and reduce the possibility of water leakage when drilling holes in the roof for installation. The photovoltaic bracket installation structure 100 can be used for both load-bearing and non-load-bearing roof structures, improving the stability of the photovoltaic bracket 300.
[0045] In one embodiment, the column 120 and the mounting base 110 are optionally integrally formed. The column 120 and the mounting base 110 are manufactured by integral molding process using a mold, avoiding subsequent splicing or assembly steps, thereby improving the strength and reliability of the overall structure.
[0046] Optionally, the connecting assembly 130 includes a connecting rod 131 and a connector 132. The connector 132 is used to connect the photovoltaic bracket 300. The photovoltaic bracket 300 is installed and fixed through the exposed ends of the connector 132 and the connecting rod 131. The connector 132 and the connecting rod 131 are detachably connected. The column 120 and the mounting base 110 are integrally cast with concrete. At least part of the connecting rod 131 is pre-embedded in the column 120. The connecting rod 131 is embedded in the concrete column 120, eliminating the need for subsequent welding or fixing steps of the connecting rod 131. During the concrete pouring process, the pre-embedded section of the connecting rod 131 is fixed in the casting mold to ensure the positional accuracy of the connecting rod 131 after pouring.
[0047] Furthermore, the threaded portion 1311 of the connecting rod 131 is threadedly connected to the connector 132, enabling relatively quick installation and disassembly of the photovoltaic bracket 300. The connector 132 serves to prevent loosening and provide limiting and fixing functions. For example, the connecting rod 131 is a threaded rod, and the surface thread of the connecting rod 131 is pre-embedded to enhance tensile and shear strength; the connector 132 is a nut.
[0048] The concrete used in the pouring was UHPC (Ultra-High-Performance Concrete), which has high strength, high toughness, and high durability. The concrete test data are shown in Table 1 below:
[0049] Table 1
[0050]
[0051] As shown in the table above, other grades of concrete such as C30 and C25 can be used as alternatives, but the performance test data of the concrete material should meet the above standards to ensure that the concrete has a lighter weight and greater structural strength.
[0052] In one embodiment, alternatively, such as Figure 2 As shown, the cross-sectional area of the mounting base 110 gradually decreases towards the column 120, i.e., it has a tapered or stepped cross-section reduction structure. The cross-sectional area of the mounting base 110 gradually decreases along the axial direction from the roof towards the column 120, saving material and avoiding stress concentration. Furthermore, the cross-sectional area of the mounting base 110 is smallest near the column 120, and the cross-sectional area of the mounting base 110 at the connection position with the column 120 matches the diameter of the column 120, forming a uniform cross-section transition zone to ensure a close fit between the two contact surfaces.
[0053] In one embodiment, alternatively, referencing Figure 3 As shown, the four corners of the mounting base 110 near the groove 111 extend to form support legs 112. The four support legs 112 are symmetrically distributed and form a square support array with the mounting base 110. The force of the photovoltaic bracket 300 is transmitted to the mounting base 110 and then distributed to the roof position through the four corner support legs 112. For example, a 2mm to 3mm gap is reserved between the end of the support leg 112 and the bottom 1112 of the groove 111 to facilitate the subsequent injection of adhesive into the groove 111 to form an adhesive layer 140.
[0054] Optionally, such as Figure 1 As shown, the groove wall 1111 and the groove bottom 1112 of the groove 111 are set at an acute angle. When the groove 111 is filled with adhesive layer 140, the bottom of adhesive layer 140 has a larger bonding area with the roof, which ensures the bonding force of adhesive layer 140 and reduces the possibility of the mounting base 110 overturning.
[0055] Furthermore, the groove 111 is a frustum structure. The frustum structure of the groove 111 can increase the bonding area of the adhesive layer 140, thereby improving the bonding strength of the adhesive layer 140. For example, the cross-sectional shape of the groove 111 is trapezoidal.
[0056] Optionally, in one embodiment, the adhesive strength of the adhesive layer 140 is Q, satisfying: Q≥1MPa. Tensile adhesive strength performance of the adhesive layer 140 is tested according to ASTM C1184 or GB / T 27596 standards. Specimens (steel-concrete / module interface) are prepared, and the tensile adhesive strength is tested, as shown in Table 2 below.
[0057] Table 2
[0058]
[0059] As shown in Table 2, the tensile bond strength after curing is ≥1 MPa, which is much greater than the load requirements of 0.54 MPa on the front and 0.24 MPa on the back of the component according to the IEC test standard. This ensures the bonding strength of the adhesive layer 140 to the roof and improves the stability of the photovoltaic bracket installation structure 100.
[0060] In this embodiment, the adhesive layer 140 can be made of cement-based adhesive, wherein water and powder are mixed in a certain proportion to form polymer mortar, which improves the bonding strength, durability and ease of construction.
[0061] An embodiment of this utility model also provides a photovoltaic system, see reference. Figure 4 As shown, multiple photovoltaic support mounting structures 100 are arranged side by side at intervals to jointly support the photovoltaic support 300. The photovoltaic system includes the photovoltaic support mounting structure 100 in the above embodiment. The photovoltaic system including the photovoltaic support mounting structure 100 has all the beneficial effects of the photovoltaic support mounting structure 100, which will not be described in detail here.
[0062] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.
[0063] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A photovoltaic support mounting structure, characterized in that, include: Mounting base, wherein a groove is provided on one side of the mounting base; A column, one end of which is connected to the side of the mounting base opposite to the groove; A connecting component is connected to the end of the column away from the mounting base, and the connecting component is used to connect a photovoltaic bracket. An adhesive layer is provided, which fills the groove and is bonded to both the mounting base and the roof.
2. The photovoltaic support mounting structure according to claim 1, characterized in that, The column and the mounting base are integrally formed.
3. The photovoltaic support mounting structure according to claim 2, characterized in that, The connection assembly includes a connecting rod and a connector. The connector is used to connect the photovoltaic bracket. The connector is detachably connected to the connecting rod. The column and the mounting base are integrally cast with concrete. At least part of the connecting rod is embedded in the column.
4. The photovoltaic support mounting structure according to claim 3, characterized in that, The threaded portion of the connecting rod is threadedly connected to the connecting piece.
5. The photovoltaic support mounting structure according to claim 1, characterized in that, The cross-sectional area of the mounting base gradually decreases in the direction it faces the column.
6. The photovoltaic support mounting structure according to claim 1, characterized in that, The four corners of the mounting base near the groove extend to form support legs.
7. The photovoltaic support mounting structure according to any one of claims 1 to 6, characterized in that, The groove wall and the groove bottom are set at an acute angle.
8. The photovoltaic support mounting structure according to claim 7, characterized in that, The groove has a frustum structure.
9. The photovoltaic support mounting structure according to any one of claims 1 to 6, characterized in that, The adhesive strength of the adhesive layer is Q, which satisfies: Q≥1MPa.
10. A photovoltaic system, characterized in that, The photovoltaic mounting structure includes any one of claims 1 to 9.