Photovoltaic packaging composite material frame structure

Abstract

The utility model discloses a photovoltaic packaging composite material frame structure which comprises a built-in piece and a photovoltaic frame body made of composite materials, the built-in piece is located in an inner cavity of the photovoltaic frame body, and the built-in piece is fixedly connected with a composite material installation support through a fastening piece. According to the utility model, the surface of the built-in member and the photovoltaic frame body have a large contact area, so that stress is dispersed, the problem of stress concentration is effectively solved, the photovoltaic frame body can be firmly fixed on the composite material mounting bracket, the photovoltaic frame body can be firmly fixed on the composite material mounting bracket, and the photovoltaic frame body can be firmly fixed on the composite material mounting bracket. And the service life of the photovoltaic frame body is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a photovoltaic packaging composite material frame structure. Background Art

[0002] The current photovoltaic packaging method is mainly based on aluminum alloy profiles, and the photovoltaic frame is installed by pressing blocks or inner bolts (such as Figure 1 and Figure 2 (As shown), both installation methods are currently the most commonly used. However, aluminum alloy, as a high-carbon emission material, will face limitations in production capacity and carbon footprint verification, limiting its further development.

[0003] Fiber-reinforced composite materials, as a new type of material with light weight, high strength and good designability, have great advantages in performance and carbon emissions. They have been applied in photovoltaic packaging. The composite frames currently produced in batches are mainly made of unidirectional continuous fibers. There are problems such as low tensile and shear strength perpendicular to the fiber direction. Therefore, they cannot be directly installed with bolts, which greatly limits the application of composite frames in the photovoltaic field.

[0004] To address the reliability issues associated with bolt installation, patents CN114598252A and CN116743057A both employ a method of adding fixed connectors to the right side of the photovoltaic frame cross-section to facilitate bolt installation. However, these connectors still experience stress concentration at the connection points, creating a risk of tearing in the composite material due to lateral stress when the module is subjected to external loads. This prevents failure of the photovoltaic frame over the decades-long service life of the photovoltaic panel. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic packaging composite material frame structure to solve the technical problems of stress concentration at the connection points of fixed connectors in the existing photovoltaic frame assembly, which leads to tearing of the composite material and failure of the photovoltaic frame within the service life of the photovoltaic panel.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A photovoltaic encapsulation composite material frame structure includes an internal component and a photovoltaic frame body made of composite material. The internal component is located in the inner cavity of the photovoltaic frame body and is fixedly connected to a composite material mounting bracket via fasteners. The internal component presses the photovoltaic frame body onto the composite material mounting bracket.

[0008] As a further solution of the present invention, the fastener is a bolt, a threaded hole is provided at the bottom of the built-in component, and the upper end of the fastener passes through the bottom of the composite material mounting bracket and the photovoltaic frame body in sequence and is threadedly connected to the built-in component.

[0009] As a preferred solution of the present invention, the built-in components are arranged in a rectangular block structure.

[0010] As a preferred solution of the present invention, the built-in component is arranged in a U shape.

[0011] As a further solution of the present invention, a protrusion is provided on the inner side of the U-shaped built-in component, and the upper end of the threaded hole extends into the interior of the protrusion.

[0012] As a preferred solution of the present invention, a plurality of high modulus reinforcement members are provided inside the photovoltaic frame body along the length direction of the photovoltaic frame body.

[0013] As a further solution of the present invention, a plurality of high modulus reinforcement members are respectively arranged at the geometric corners of the photovoltaic frame body.

[0014] As a further solution of the present invention, the high modulus reinforcement is one of steel wire or carbon fiber rod.

[0015] As a further solution of the present invention, the diameter of the high modulus reinforcement is 0.8 mm-1 mm.

[0016] Compared with the prior art, the photovoltaic packaging composite material frame structure of the utility model has the following beneficial effects:

[0017] The utility model places the built-in component in the inner cavity of the photovoltaic frame body, so that the surface of the built-in component and the inner wall of the photovoltaic frame body have a larger contact area to disperse stress and effectively solve the problem of stress concentration. It not only can reliably connect the photovoltaic frame body and the composite material mounting bracket, but also effectively improve the service life of the photovoltaic frame body.

[0018] A high modulus reinforcement is provided inside the photovoltaic frame body to significantly enhance the rigidity of the overall connection structure of the photovoltaic frame body, thereby improving its durability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a photovoltaic frame installed using side bolts in the prior art;

[0021] Figure 2 This is a structural diagram of a photovoltaic frame using a pressing block installation method in the prior art;

[0022] Figure 3 This is a schematic structural diagram of an embodiment of the present utility model;

[0023] Figure 4 This is a schematic cross-sectional view of an embodiment of the present invention when a built-in component with a rectangular block structure is used;

[0024] Figure 5 This is a schematic cross-sectional view of a U-shaped built-in component in an embodiment of the present invention;

[0025] Figure 6 This is a schematic structural diagram of a rectangular block structure of an internal component in an embodiment of the present utility model;

[0026] Figure 7 This is a schematic structural diagram of a U-shaped built-in component in an embodiment of the present utility model;

[0027] Figure 8 It is a schematic cross-sectional structural diagram of the photovoltaic frame body in an embodiment of the present utility model.

[0028] Figure numerals: 1. Composite material mounting bracket; 2. Photovoltaic frame body; 201. High modulus reinforcement; 3. Bolt; 4. Photovoltaic panel; 5. Built-in component; 501. Bump; 6. Threaded hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a further detailed description of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the embodiments of the present invention.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] Example 1:

[0033] See also Figures 3 and 4 As shown, an embodiment of the utility model is a photovoltaic encapsulation composite material frame structure, including an internal component 5 and a photovoltaic frame body 2 made of a composite material. The photovoltaic frame body 2 is used to fix the photovoltaic panel 4. The internal component 5 is located in the inner cavity of the photovoltaic frame body 2. The internal component 5 is fixedly connected to the composite material mounting bracket 1 through a fastener 3. The internal component 5 presses the photovoltaic frame body 2 onto the composite material mounting bracket 1.

[0034] In the embodiment of the present invention, the fastener 3 is a bolt, and a threaded hole 6 is provided at the bottom of the built-in component 5. The upper end of the fastener 3 passes through the bottom of the composite material mounting bracket 1 and the photovoltaic frame body 2 in sequence and is then threadedly connected to the built-in component 5.

[0035] See also Figure 6 As shown, the built-in component 5 is arranged in a rectangular block structure. The contact area between the built-in component 5 and the photovoltaic frame body 2 is large, which disperses the stress and effectively solves the problem of stress concentration. It not only realizes a reliable connection between the photovoltaic frame body 2 and the composite material mounting bracket 1, but also effectively improves the service life of the photovoltaic frame body 2.

[0036] Example 2:

[0037] See also Figure 5 、 7 As shown, the difference between Example 2 and Example 1 is that the built-in component 5 is arranged in a U shape, which reduces the material consumption of the built-in component 5 while ensuring the connection strength.

[0038] In order to ensure the connection strength between the built-in component 5 and the bolt, a protrusion 501 is provided on the inner side of the U-shaped built-in component 5 , and the upper end of the threaded hole 6 extends into the interior of the protrusion 501 .

[0039] Example 3:

[0040] The interior of the photovoltaic frame body 2 is provided with several high modulus reinforcements 201 along the length direction of the photovoltaic frame body 2. The high modulus reinforcements 201 significantly enhance the rigidity of the overall connection structure of the photovoltaic frame body 2, thereby improving its durability and stability.

[0041] See also Figure 8 As shown, several high modulus reinforcement members 201 are respectively arranged at the geometric corners of the photovoltaic frame body 2. This embodiment is a minimal arrangement of high modulus reinforcement members 201, and other similar designs have the same effect.

[0042] The high modulus reinforcement 201 is a steel wire or a carbon fiber rod. The high modulus reinforcement 201 is made of a material having a modulus higher than that of glass fiber.

[0043] When the high modulus reinforcement 201 is a steel wire, its distribution is Figure 8 As shown, the diameter of the steel wire is preferably 0.8 mm to 1 mm.

[0044] When assembling the above embodiments, first place the built-in component 5 in the inner cavity of the photovoltaic frame body 2; then place the photovoltaic frame body 2 on the composite material mounting bracket 1; the upper end of the bolt is passed through the bottom of the composite material mounting bracket 1 and the photovoltaic frame body 2 in sequence, and then threadedly connected to the threaded hole 6 on the built-in component 5, thereby completing the assembly of the photovoltaic frame body 2.

[0045] The above shows and describes the basic principles of the present invention. The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic packaging composite material frame structure, characterized in that: The invention comprises an internal component (5) and a photovoltaic frame body (2) made of a composite material, wherein the internal component (5) is located in the inner cavity of the photovoltaic frame body (2), the internal component (5) is fixedly connected to a composite material mounting bracket (1) via a fastener (3), and the internal component (5) presses the photovoltaic frame body (2) onto the composite material mounting bracket (1).

2. The photovoltaic encapsulation composite material frame structure according to claim 1, characterized in that: The fastener (3) is a bolt, and a threaded hole (6) is provided at the bottom of the built-in component (5). The upper end of the fastener (3) passes through the composite material mounting bracket (1) and the bottom of the photovoltaic frame body (2) in sequence and is then threadedly connected to the threaded hole (6) on the built-in component (5).

3. The photovoltaic encapsulation composite material frame structure according to claim 2, characterized in that: The built-in component (5) is arranged in a rectangular block structure.

4. The photovoltaic encapsulation composite material frame structure according to claim 2, characterized in that: The built-in component (5) is arranged in a U shape.

5. The photovoltaic encapsulation composite material frame structure according to claim 4, characterized in that: A protrusion (501) is provided on the inner side of the U-shaped built-in component (5), and the upper end of the threaded hole (6) extends into the interior of the protrusion (501).

6. The photovoltaic encapsulation composite material frame structure according to claim 1, characterized in that: A plurality of high modulus reinforcement pieces (201) are provided inside the photovoltaic frame body (2) along the length direction of the photovoltaic frame body (2).

7. The photovoltaic encapsulation composite material frame structure according to claim 6, characterized in that: The plurality of high modulus reinforcement members (201) are respectively arranged at the geometric corners of the photovoltaic frame body (2).

8. The photovoltaic encapsulation composite material frame structure according to claim 7, characterized in that: The high modulus reinforcement (201) comprises one of steel wire or carbon fiber rod.

9. The photovoltaic encapsulation composite material frame structure according to claim 8, characterized in that: The diameter of the high modulus reinforcement (201) is 0.8 mm to 1 mm.

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