Photovoltaic module mounting bracket

Abstract

The utility model discloses a kind of photovoltaic module mounting brackets, including support column, support inclined beam and purline;Support column is vertically arranged, quantity is at least two, and the top of each support column is hingedly connected with the bottom of a support inclined beam, support inclined beam is arranged in parallel between, at least two purlines are connected between adjacent support inclined beam, purline is horizontally arranged and mutually parallel between, the width of single photovoltaic module is the interval of adjacent purline, and fixing assembly for being connected with photovoltaic module is provided on purline.In the premise of guaranteeing mechanical property, reduce purline shielding area, improve photovoltaic module actual power generation.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic power generation and relates to a photovoltaic module mounting bracket. Background Technology

[0002] Against the backdrop of the industry's relentless pursuit of higher power generation efficiency, the iteration cycle of module technology (3-5 years) far outpaces the update cycle of support systems (10+ years). The conflict between standardized design and diverse application scenarios means that existing photovoltaic system installation technologies are severely lagging behind the development needs of new modules. Firstly, traditional support system design concepts remain rooted in the era of single-sided modules, failing to fully consider the characteristics and requirements of bifacial modules. Secondly, the excessive standardization of installation schemes makes it difficult to adapt to diverse roof conditions. Most importantly, in conventional support system installations, the design of purlins being fixed horizontally across the back of the module via the long side results in an average 8-15% back-side irradiance loss, severely weakening the up to 25% back-side power generation gain of N-type bifacial modules and restricting the full realization of N-type module performance. Test data shows that, under the same module conditions, system efficiency losses due to differences in support system design alone can reach up to 12%, a figure particularly prominent in the era of pursuing ultimate efficiency with N-type modules. Directly blocking the purlin's projected area leads to the loss of incident photons. Uneven blocking causes a temperature gradient of 8-12℃ in the module. Blocking also causes distortion of the string IV curve and a 3-5% decrease in MPPT efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a photovoltaic module mounting bracket that reduces the shading area of ​​the purlins while ensuring mechanical performance, thereby increasing the actual power generation of the photovoltaic module.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic module mounting bracket includes a bracket column, a bracket inclined beam, and purlins;

[0006] The support columns are vertically installed, with a minimum of two columns. The top of each support column is hinged to the bottom of a support beam. The support beams are parallel to each other, and at least two purlins connect adjacent support beams. The purlins are horizontally installed and parallel to each other, with the spacing between adjacent purlins equal to the width of a single photovoltaic module. The purlins are equipped with fixing components for connecting to the photovoltaic modules.

[0007] Preferably, the fixing component includes a fixing block and a support plate. The support plate is a plate-shaped structure with a protrusion at the top center. The top of the fixing block extends horizontally to the edge. Bolts are used to pass through the fixing block, the support plate, and the purlin in sequence to connect the three. The horizontal extension of the fixing block and the plate-shaped structure of the support plate are used to clamp the top and bottom edges of the photovoltaic module.

[0008] Preferably, the fixing block connected to the top and bottom purlins is a double-step structure, and the fixing block connected to the middle purlin is a U-shaped structure. The two ends of the U-shaped structure extend horizontally to both sides, and the width of the middle part of the U-shaped structure is the same as the width of the protrusion.

[0009] Preferably, the length of the fixing block and the support plate is the same as the length of the photovoltaic module.

[0010] Preferably, the center of the fixed pressure block has multiple through holes spaced apart along its length.

[0011] Preferably, each purlin is provided with at least two fixing blocks and support plates within the length of the photovoltaic module.

[0012] Preferably, a spring washer is provided at the connection between the bolt and the fixing block.

[0013] Preferably, the spacing between adjacent support beams is one or two times the length of the photovoltaic module.

[0014] Preferably, there are three inclined beams in the support structure, the spacing between adjacent inclined beams is the same as the length of the photovoltaic module, the length of the inclined beam is greater than the width of four photovoltaic modules, each inclined beam is connected to two support columns, and five purlins are connected between adjacent inclined beams.

[0015] Preferably, the purlins are made of hollow square steel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention moves the traditional vertical purlins that run through the back of the module to the outer edge of the module. The hollowed-out structure on the back avoids the shading of the back of the module by traditional brackets. Through mechanical optimization design, it achieves an unobstructed back, increasing the power generation of the photovoltaic module's back by 15%-25%. It reduces the risk of hot spot effects and extends the module's lifespan. The hollowed-out structure enhances airflow on the back of the module, lowering the operating temperature by 10℃-20℃ and improving power generation efficiency. For every 1℃ decrease in temperature, the efficiency increases by approximately 0.4%. Furthermore, the unobstructed back design facilitates cleaning and maintenance, reducing operation and maintenance costs.

[0018] Furthermore, a fixing block and support plate are used to clamp the edges of the photovoltaic module. The fixing block, support plate, and purlin are connected by bolts, reducing installation time by 40% and making it compatible with mainstream C-type and T-type slot frames of photovoltaic modules. Multi-point distributed fixing replaces the traditional central purlin load-bearing and eliminates concentrated stress points. Attached Figure Description

[0019] Figure 1 This is a front view of the photovoltaic module mounting bracket of this utility model;

[0020] Figure 2This is a side view of the photovoltaic module mounting bracket of this utility model.

[0021] Among them: 1-Steel bracket inclined beam; 2-Purlin; 3-Steel bracket column; 4-Fixing pressure block; 5-Photovoltaic module; 6-Panel. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms “installation,” “connection,” and “linkage” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection, an electrical connection, or a connection that allows communication; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements or an interaction between two elements. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] like Figure 1 and Figure 2 As shown, this is the photovoltaic module mounting bracket of the present invention, consisting of bracket column 3, bracket inclined beam 1, and purlin 2.

[0028] The support column 3 is installed on the ground at its base, and can be installed using a single column or a double column to support the inclined beam 1. When fixing the inclined beam 1 to the horizontal purlins 2, the spacing should be based on the width of the photovoltaic modules. The photovoltaic modules are laid horizontally and fixed from the long side fixing point.

[0029] Multiple photovoltaic module mounting brackets form a bracket array. The bracket array is generally arranged with the bracket columns in an east-west direction, and the long side of the photovoltaic module 5 is in a north-south direction. In this embodiment, the long side of the photovoltaic module 5 is changed to an east-west direction, which is consistent with the arrangement direction of the photovoltaic module mounting brackets.

[0030] The support columns 3 are set vertically, with a minimum of two columns. The top of each support column 3 is hinged to the bottom of a support beam 1, allowing for angle adjustment. The support beams 1 are set parallel to each other, with the spacing between adjacent support beams 1 being one or two times the length of the photovoltaic module 5. One or two photovoltaic modules 5 can be installed horizontally at a time.

[0031] At least two purlins 2 are connected between adjacent support beams 1. The purlins 2 are horizontally arranged and parallel to each other. The spacing between adjacent purlins 2 is the width of a single photovoltaic module 5. A photovoltaic module 5 is installed between adjacent purlins 2. The purlins 2 are provided with fixing components for connecting to the photovoltaic module 5.

[0032] like Figure 2 As shown, the fixing component includes a fixing block 4 and a support plate 6. The support plate 6 is located on the top of the purlin 2. The support plate 6 is a plate-shaped structure with a protrusion at the top center. The plate-shaped structure is used to support the bottom edge of the photovoltaic module 5. The protrusion is clamped between two adjacent photovoltaic modules 5 to maintain a fixed distance between the two adjacent photovoltaic modules 5.

[0033] The top of the fixing block 4 extends horizontally towards the edge. The horizontally extended part is used to clamp the top edge of the photovoltaic module 5. The fixing block 4 adopts two structural forms depending on the installation position. The fixing block 4 connected to the top and bottom purlins 2 is a double-step structure. The horizontally extended part of the double-step structure is used to clamp the top edge of a single photovoltaic module 5. The fixing block 4 connected to the middle purlin 2 is a U-shaped structure. The two ends of the U-shaped structure extend horizontally to both sides. The width of the middle part of the U-shaped structure is the same as the width of the protrusion. The horizontally extended part of the U-shaped structure is used to clamp the top edge of two adjacent photovoltaic modules 5. The middle part of the U-shaped structure also maintains a fixed distance between two adjacent photovoltaic modules 5.

[0034] Bolts are used to sequentially pass through the fixing block 4, the support plate 6, and the purlin 2 to connect the three. The horizontal extension part of the fixing block 4 and the plate-shaped structure part of the support plate are used to clamp the top and bottom edges of the photovoltaic module 5. When the fixing block 4 has a double-layer stepped structure, the bolt passes through the center of the bottom step. When the fixing block 4 has a U-shaped structure, the bolt passes through the center of the bottom of the middle part.

[0035] A spring washer is provided at the connection between the bolt and the fixing block 4 to allow the photovoltaic module to move ±2mm due to thermal expansion and contraction.

[0036] The fixing block 4 and the support plate 6 are long strip structures or block structures. When the fixing block 4 and the support plate 6 are long strip structures, the length of the fixing block 4 and the support plate 6 is the same as the length of the photovoltaic module 5. The center of the fixing block 4 is provided with multiple through holes spaced apart along the length direction. Some of the through holes are used to bolt to the support plate 6 and the purlin 2, and the remaining through holes are used to prevent dust / snow accumulation.

[0037] When the fixing block 4 and the support plate 6 are block structures, each purlin 2 is provided with at least two fixing blocks 4 and support plates 6 within the length range of the photovoltaic module 5. That is, a single photovoltaic module 5 is clamped and fixed by at least four fixing blocks 4 and support plates 6, replacing the traditional central purlin load-bearing through multi-point decentralized fixing, and there are no concentrated stress points.

[0038] The fixing block 4, the support plate 6 and the purlin 2 are connected by bolts, and a multi-point decentralized fixing method is adopted. The clamping thickness can be adjusted to adapt to the 30-50mm frame thickness of mainstream N-type photovoltaic modules, and can be expanded to large-size photovoltaic modules of 2300mm×1300mm and above in the future.

[0039] In this embodiment, as Figure 1 As shown, there are three inclined beams 1 of the support frame. The spacing between adjacent inclined beams 1 is the same as the length of the photovoltaic module 5. The length of the inclined beam 1 is greater than the width of four photovoltaic modules 5. Each inclined beam 1 is connected to two support columns 3. There are five purlins 2 connecting adjacent inclined beams 1. A single photovoltaic module mounting bracket can install four rows and two columns, for a total of eight photovoltaic modules 5.

[0040] This embodiment uses N-type TOPCoN photovoltaic modules. The mounting bracket structure relocates the cantilevered purlins, moving them from the traditional vertical purlins that run through the back of the photovoltaic module to the outer edge of the module. The open back structure avoids shading of the back of the photovoltaic module by traditional mounting brackets. By redesigning the mounting bracket structure, the purlin shading area is reduced by 70% while maintaining mechanical performance. The open structure enhances airflow on the back of the photovoltaic module, lowering the operating temperature by 10℃-20℃ and improving power generation efficiency. For every 1℃ decrease in temperature, efficiency increases by approximately 0.4%. This solution can increase the back-side power generation of N-type bifacial photovoltaic modules by 15%-25%, increasing the actual power generation of N-type bifacial photovoltaic modules by 9-13%, equivalent to an annual revenue increase of approximately 50,000-80,000 RMB per megawatt system, demonstrating significant economic benefits. It is compatible with the frame thickness of mainstream N-type photovoltaic modules and can be extended to future large-size photovoltaic modules. Without increasing costs, it fully releases the performance potential of the new photovoltaic modules, creating new value growth points for the industry.

[0041] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0042] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0043] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0044] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

[0046] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A photovoltaic module mounting bracket, characterized in that, Includes support columns (3), support inclined beams (1), and purlins (2); The support columns (3) are vertically arranged, with at least two columns. The top of each support column (3) is hinged to the bottom of a support beam (1). The support beams (1) are arranged in parallel. At least two purlins (2) are connected between adjacent support beams (1). The purlins (2) are arranged horizontally and parallel to each other. The spacing between adjacent purlins (2) is the width of a single photovoltaic module (5). The purlins (2) are provided with fixing components for connecting to the photovoltaic module (5).

2. The photovoltaic module mounting bracket according to claim 1, characterized in that, The fixing component includes a fixing block (4) and a support plate (6). The support plate (6) is a plate-shaped structure with a protrusion at the top center. The top of the fixing block (4) extends horizontally to the edge. Bolts are used to pass through the fixing block (4), the support plate (6) and the purlin (2) in sequence to connect the three. The horizontal extension part of the fixing block (4) and the plate-shaped structure part of the support plate are used to clamp the top and bottom edges of the photovoltaic module (5).

3. The photovoltaic module mounting bracket according to claim 2, characterized in that, The fixing block (4) connected to the topmost and bottommost purlins (2) is a double-layer stepped structure, and the fixing block (4) connected to the middle purlin (2) is a U-shaped structure. The two ends of the U-shaped structure extend horizontally to both sides, and the width of the middle part of the U-shaped structure is the same as the width of the protrusion.

4. The photovoltaic module mounting bracket according to claim 2, characterized in that, The lengths of the fixed pressure block (4) and the support plate (6) are the same as the length of the photovoltaic module (5).

5. The photovoltaic module mounting bracket according to claim 4, characterized in that, The fixed pressure block (4) has multiple through holes spaced apart along its length.

6. The photovoltaic module mounting bracket according to claim 2, characterized in that, Each purlin (2) is provided with at least two fixing blocks (4) and a support plate (6) within the length range of the photovoltaic module (5).

7. The photovoltaic module mounting bracket according to claim 2, characterized in that, A spring washer is provided at the connection between the bolt and the fixing block (4).

8. The photovoltaic module mounting bracket according to claim 1, characterized in that, The spacing between adjacent bracket inclined beams (1) is one or two times the length of the photovoltaic module (5).

9. The photovoltaic module mounting bracket according to claim 1, characterized in that, The number of the bracket inclined beams (1) is three. The spacing between adjacent bracket inclined beams (1) is the same as the length of the photovoltaic module (5). The length of the bracket inclined beams (1) is greater than the width of four photovoltaic modules (5). Each bracket inclined beam (1) is connected to two bracket columns (3). Five purlins (2) are connected between adjacent bracket inclined beams (1).

10. The photovoltaic module mounting bracket according to claim 1, characterized in that, The purlin (2) is made of hollow square steel.

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