Portable support mechanism for CPC concentrating solar energy

Abstract

The utility model discloses a kind of portable support mechanism of CPC light condensation solar energy, including aluminium composite support plate;The aluminium composite support plate upper end is connected with CPC curve light condensation plate;Arc-shaped groove is processed downwards with CPC curve light condensation plate corresponding the aluminium composite support plate upper end;The aluminium composite support plate lower end is fixed on connecting plate by aluminium keel mounting;The connecting plate is connected and fixed in roof stress position;The utility model constructs support system with aluminium composite material, with light weight, safe and reliable, installation structure is simple, small, suitable for various types of roof, comprehensive cost low etc. Characteristics, effectively expand the feasibility of CPC solar energy in roof application.

Description

Technical Field

[0001] This utility model relates to the technical field of support systems for CPC (Concentrated Photovoltaic) solar energy systems arranged on building roofs, and in particular to a shaping and fixing mechanism for a concentrator, specifically a lightweight support mechanism applicable to building roofs of various types and shapes. Background Technology

[0002] When integrating CPC (Composite Parabolic Concentrator) solar energy systems onto building rooftops, the support structure must simultaneously meet three core requirements: maintaining the optical accuracy of the concentrator panels, limiting roof load, and ensuring building adaptability. While traditional fixed supports can achieve foundation installation, they reveal the following key technical shortcomings in practical engineering applications: 1. The contradiction between roof shape adaptability and structural stiffness The existing adjustable bracket adopts a standard triangular truss structure, and its support base flatness tolerance requirement is ≤3mm / m². However, building roofs generally have corrugated surfaces, sloping curvature (common curvature radius 5-15m), and waterproof protrusions, resulting in the bracket base contact area being less than 60%. Finite element analysis (ANSYS 19.0) shows that under such installation conditions, the optical axis offset of the light-concentrating plate can reach 0.8°~1.5°, directly causing a 12~18% reduction in light-concentrating efficiency.

[0003] 2. Imbalance between tilt adjustment accuracy and lightweight design According to literature reports, the optimal receiving angle of the CPC system needs to be adjusted by ±7° depending on the season. Although the traditional worm gear adjustment mechanism can achieve a positioning accuracy of 0.5°, the weight of a single unit is 3~28kg, resulting in an increase in roof load of 320~400N / m². While the lightweight aluminum alloy quick-release structure reduces the weight to 8kg, the angular displacement hysteresis caused by its gear backlash reaches 1.2°, which cannot meet the optical requirement of the CPC system for an incident angle deviation of ≤0.3°.

[0004] 3. The challenge of resonance suppression under dynamic wind load The wind field on the building roof exhibits significant turbulent characteristics. Actual measurement data (referencing GB 50176-2016 "Code for Thermal Design of Civil Buildings") shows that when the wind speed is >8m / s, the first-order natural frequency of the traditional support is 2.1~2.8Hz, which coincides with the typical roof vortex shedding frequency (2.5~3.5 Hz), inducing resonance and causing the bolt preload to decrease by more than 40%.

[0005] 4. Conflict between rapid installation and structural stability Engineering practice shows (see T / CECS 10116-2021 "Technical Specification for Construction of Building-integrated Photovoltaic Systems") that traditional bolt-fastening installation takes 45-60 minutes per set, and the pass rate for wrench torque control during high-altitude operations is only 72%. While the snap-on quick-installation structure shortens the installation time to 15 minutes, its overturning moment resistance only reaches 67% of the requirement of national standard GB / T 37663-2019, posing a risk of structural failure under extreme weather conditions.

[0006] Current improvement solutions are mostly limited to single performance enhancements and fail to address the coupling issues between building adaptability, adjustment accuracy, and dynamic stability. Therefore, there is an urgent need to develop a new type of lightweight support mechanism that, through topology optimization and intelligent adjustment mechanisms, can achieve systematic optimization of roof load, installation efficiency, and wind resistance while ensuring the optical performance of the CPC system. Utility Model Content

[0007] The purpose of this invention is to solve the problems of the prior art and provide a lightweight support structure for CPC concentrating solar energy.

[0008] The purpose of this utility model is achieved through the following technical solution: a lightweight support mechanism for CPC concentrating solar panels, comprising an aluminum composite support plate; the upper end of the aluminum composite support plate is connected to a CPC curved concentrating plate; an arc-shaped groove is machined downwards on the upper end of the aluminum composite support plate corresponding to the CPC curved concentrating plate; the lower end of the aluminum composite support plate is fixed to a connecting plate by an aluminum keel; the connecting plate is fixed to the stress position on the roof. The aluminum composite support plate includes a main support plate, a light-concentrating plate connecting plate, and a fixing connecting plate; the main support plate has an arc-shaped groove; the light-concentrating plate connecting plate is an arc-shaped panel; the light-concentrating plate connecting plate is located in the arc-shaped groove for fixing and supporting the CPC curved light-concentrating plate; the fixing connecting plate is located at the lower end of the main support plate for connecting with the aluminum keel; The width of the light-concentrating plate connecting plate is greater than the width of the main support plate; The main support plate, the light-concentrating plate connecting plate, and the fixed connecting plate are compositely connected using aluminum alloy brazing technology. A CPC curve concentrator is equipped with a vacuum tube; a CPC curve concentrator is fixedly supported by at least three aluminum composite support plates arranged along the axis of the CPC curve concentrator; the aluminum composite support plate at one end is connected to a combiner, and the aluminum composite support plate at the other end is connected to a vacuum tube support; when two or more CPC curve concentrators are used in combination, they are connected in pairs by a combiner, with the aluminum composite support plates at the respective ends of the two CPC curve concentrators connected to the combiner on both sides.

[0009] A further technical solution is that the connecting plate is a lifting plate with a lifting mechanism installed at its bottom; the lifting mechanism is used to change the height of the connecting plate, thereby adjusting the tilt of the lightweight support mechanism. In this utility model, the lifting mechanism can be a common lifting mechanism in the art and fixed to the stress position on the roof in a reasonable manner. The lifting mechanisms can be located at both ends of the connecting plate, and the tilt angle can be adjusted when the two lifting mechanisms are raised to different heights.

[0010] This utility model has the following advantages: 1. This utility model uses aluminum composite materials to construct a support system, which is lightweight, safe and reliable, simple to install, occupies little space, is suitable for various types of roofs, and has low overall cost, effectively expanding the feasibility of CPC solar energy applications on roofs.

[0011] 2. This utility model enables the lightweight installation of CPC concentrating solar roofs, and can be installed on metal roofs and irregular roofs. On-site installation is convenient, the roof weight load is small, and the implementation of this support structure can reduce system investment and increase system life. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the present invention from one perspective.

[0013] Figure 2 This is a structural schematic diagram of the present invention from another perspective.

[0014] Figure 3 This is a schematic diagram of the working state of this utility model.

[0015] In the figure: 1. Aluminum composite support plate; 101. Main support plate; 102. Concentrating plate connecting plate; 103. Fixed connecting plate; 2. CPC curve concentrating plate; 3. Aluminum keel; 4. Connecting plate; 5. Vacuum tube; 6. Combiner; 7. Vacuum tube support. Detailed Implementation

[0016] 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, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] 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.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] 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.

[0020] 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, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] 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.

[0022] Example 1: As Figures 1 to 3 As shown, a lightweight support structure for CPC (Current Concentrated Solar Panel) solar panels includes an aluminum composite support plate 1; the upper end of the aluminum composite support plate 1 is connected to a CPC curved concentrator plate 2; an arc-shaped groove is machined downwards on the upper end of the aluminum composite support plate 1 corresponding to the CPC curved concentrator plate 2; the lower end of the aluminum composite support plate 1 is fixed to a connecting plate 4 via an aluminum keel 3; the connecting plate 4 is fixed to the stress-bearing position on the roof. The aluminum composite support plate 1 includes a main support plate 101, a light-concentrating plate connecting plate 102, and a fixing connecting plate 103; the main support plate 101 has an arc-shaped groove; the light-concentrating plate connecting plate 102 is an arc-shaped panel; the light-concentrating plate connecting plate 102 is located in the arc-shaped groove for fixing and supporting the CPC curved light-concentrating plate 2; the fixing connecting plate 103 is located at the lower end of the main support plate 101 for connecting with the aluminum keel 3. The width of the light-concentrating plate connecting plate 102 is greater than the width of the main support plate 101; The main support plate 101, the light-concentrating plate connecting plate 102, and the fixed connecting plate 103 are compositely connected by aluminum alloy brazing technology. A CPC curve concentrator 2 is equipped with a vacuum tube 5; a CPC curve concentrator 2 is fixedly supported by at least three aluminum composite support plates 1 arranged along the axial direction of the CPC curve concentrator 2; the aluminum composite support plate 1 at one end is connected to the combiner 6, and the aluminum composite support plate 1 at the other end is connected to the vacuum tube support 7; when two or more CPC curve concentrator 2 are used in combination, such as Figure 3 As shown, the connection is made by a junction box 6, and the aluminum composite support plate 1 at each end of the two CPC curved focusing plates 2 is connected to the two sides of the junction box 6 respectively.

[0023] The connecting plate 4 is a lifting plate with a lifting mechanism installed at its bottom; the lifting mechanism is used to change the height of the connecting plate 4, thereby adjusting the tilt of the lightweight support mechanism. In this utility model, the lifting mechanism can be a common lifting mechanism in the art and fixed to the stress position on the roof in a reasonable way. The lifting mechanisms can be located at both ends of the connecting plate 4, and the tilt angle can be adjusted when the two lifting mechanisms are raised to different heights.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lightweight support structure for CPC concentrating solar cells, characterized in that: It includes an aluminum composite support plate; the upper end of the aluminum composite support plate is connected to the CPC curved light-concentrating plate; the upper end of the aluminum composite support plate is machined downwards with an arc-shaped groove corresponding to the CPC curved light-concentrating plate; the lower end of the aluminum composite support plate is installed and fixed to a connecting plate by an aluminum keel; the connecting plate is connected and fixed to the stress position of the roof.

2. The lightweight support structure for CPC concentrating solar cells according to claim 1, characterized in that: The aluminum composite support plate includes a main support plate, a light-concentrating plate connecting plate, and a fixing connecting plate; the main support plate has an arc-shaped groove; the light-concentrating plate connecting plate is an arc-shaped panel; the light-concentrating plate connecting plate is located in the arc-shaped groove for fixing and supporting the CPC curved light-concentrating plate; the fixing connecting plate is located at the lower end of the main support plate for connecting with the aluminum keel.

3. The lightweight support structure for CPC concentrating solar cells according to claim 2, characterized in that: The width of the light-concentrating plate connecting plate is greater than the width of the main support plate.

4. The lightweight support structure for CPC concentrating solar cells according to claim 2, characterized in that: The main support plate, the light-concentrating plate connecting plate, and the fixed connecting plate are connected by aluminum alloy brazing technology.

5. The lightweight support structure for CPC concentrating solar cells according to claim 1, characterized in that: A CPC curve concentrator is equipped with a vacuum tube; a CPC curve concentrator is fixedly supported by at least three aluminum composite support plates arranged along the axis of the CPC curve concentrator; the aluminum composite support plate at one end is connected to the combiner, and the aluminum composite support plate at the other end is connected to the vacuum tube support.

6. The lightweight support structure for CPC concentrating solar cells according to claim 1, characterized in that: The connecting plate is a lifting plate with a lifting mechanism installed at its bottom; the lifting mechanism is used to change the height of the connecting plate and thus adjust the tilt of the lightweight support mechanism.

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