A connection node between a photovoltaic panel and a roof

Abstract

A connection node between a photovoltaic panel and a roof comprises a longitudinal rod, a connector, and an embedded part; the longitudinal rod and the connector are integrally connected; the longitudinal rod serves as a support; the connector connects the longitudinal rod and the embedded part; the connector is provided with a bayonet, which is fixed by a fuse; a support hinge is installed in the bayonet, and the connector is hinged to a support claw via the support hinge; a rib is provided inside the embedded part; the connector is inserted into the embedded part; the rib secures the connector; the connector has a storage state and a use state; in the storage state, the bayonet is in a fixed state, and the support claw remains vertical and close to the connector; after the fuse is pulled out, the bayonet becomes relaxed, thereby entering the use state, the support claw opens downward and begins to work, and finally the connector is fixed in position by the support claw, which is then engaged with the rib. The embedded part of the present invention is directly connected to the longitudinal rod, making the construction technology simpler and more convenient.

Description

Technical Field

[0001] The present invention belongs to the field of photovoltaics, and in particular relates to a connection node between a photovoltaic panel and a roof. Background Art

[0002] Photovoltaic (PV), short for solar photovoltaic power generation, is a novel power generation system that utilizes the photovoltaic effect of semiconductor materials in solar cells to directly convert solar radiation into electricity. It can operate independently or in conjunction with the grid. Solar PV systems can be categorized into centralized systems, such as large-scale ground-based PV systems in Northwest China, and distributed systems, such as those on rooftops of industrial and commercial buildings and residential rooftops. PV technology offers many advantages: it has no mechanical moving parts; it requires no "fuel" other than sunlight and can operate in both direct and oblique sunlight; and it offers flexibility in site selection, suitable for use on rooftops and open spaces in cities. Today, its application in power generation is widespread worldwide, ranging from powering automatic parking meters and rooftop solar panels to large-scale solar power generation centers. Currently, to minimize component costs, directly laying PV panels on the ground without support structures is becoming more economical and practical, and has become a research and development trend among major companies and departments. This paper first investigates the embedded components and connection points between photovoltaic panels and roofs, examining various types of connectors. Existing connectors present challenges such as inconvenient installation and lack of practicality. In practice, these limitations often hinder installation, reducing efficiency and quality. Furthermore, gaps between the connectors and the longitudinal rods can create external forces that cause the longitudinal rods to wobble, weakening the connection between the photovoltaic panels and the roof, thus compromising their seismic performance. Therefore, designing a photovoltaic panel connection device that is both easy to install and highly practical is crucial. Summary of the Invention

[0003] The purpose of the present invention is to overcome at least one shortcoming of the prior art and provide a connection node between a photovoltaic panel and a roof to solve the technical problem of a loose connection between the photovoltaic panel and the roof.

[0004] To solve the above technical problems, the specific technical solution of the connection node between a photovoltaic panel and a roof of the present invention is as follows:

[0005] A connection node between a photovoltaic panel and a roof, comprising a longitudinal rod, a connecting piece, and an embedded piece;

[0006] The longitudinal rods are integrally connected to the connecting members;

[0007] The longitudinal rods play a supporting role; the connectors are used to connect the longitudinal rods and embedded parts;

[0008] The connecting piece is provided with a bayonet, which is fixed by a fuse; a support hinge is installed in the bayonet, and the connecting piece is hinged to the support claw through the support hinge;

[0009] Ribs are provided inside the embedded part; the connecting piece is inserted into the embedded part; the ribs fix the connecting piece;

[0010] The connector has a storage state and a use state; in the storage state, the bayonet is in a fixed state, and the supporting claw remains vertical and close to the connector; after the fuse is pulled out, the bayonet becomes a relaxed state, thus changing to a use state, the supporting claw rotates downward and opens to start working, and finally the connector is fixed in position by the supporting claw, and the supporting claw is stuck in the rib.

[0011] Furthermore, the support hinge and support claw are made of angle steel, and the top of the support claw is made of damping material, which can fully play a buffering role in earthquakes. When the support hinge is in the open safety state, it remains in the open state due to gravity.

[0012] Furthermore, the connecting parts and embedded parts are made of angle steel, and the supporting claws and supporting hinges are made of aluminum alloy;

[0013] Furthermore, corresponding damping material is added to the inner wall of the cavity in the embedded part in advance, and resin adhesive is used in combination to improve performance and reduce gaps, thereby improving the seismic resistance of the connector; a certain installation or deformation gap is reserved between the connector and the embedded part.

[0014] The photovoltaic panel and roof connection node of the present invention has the following advantages: the designed photovoltaic panel roof connection node successfully achieves photovoltaic integration compared to the traditional method of directly inserting longitudinal rods into cast-in-place concrete. Adding damping material to the embedded parts in advance and using a resin adhesive during installation not only improves their performance and reduces gaps accordingly, but also gives the connecting component a certain degree of earthquake resistance. Currently, traditional construction techniques for connecting embedded parts generally use welding or nuts. The designed photovoltaic panel roof connection node does not require the above-mentioned traditional construction methods. After removing the fuse and converting the connector into the use state, the connector is inserted into the corresponding embedded part. The support claws naturally open and snap into the ribs. It is convenient, easy to use, and stably connected to the roof, making it more convenient and simple. At the same time, it lowers the construction threshold, reduces the construction process of on-site concrete pouring by related professional photovoltaic companies, improves construction speed, and shortens the construction period. In some northwestern regions where photovoltaics are widely used, the materials of the relevant joints can be changed according to the actual conditions of different regions to meet the requirements of areas with higher earthquake intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1( a ) is a schematic side view of the connection node between the photovoltaic panel and the roof of the present invention when in use;

[0016] FIG1( b ) is a schematic side view of the connection node between the photovoltaic panel and the roof in the storage state of the present invention;

[0017] Figure 2 This is a schematic diagram of the top view of the connection node between the photovoltaic panel and the roof of the present invention;

[0018] Figure 3 This is a schematic diagram of the top view of the embedded parts of the connection node between the photovoltaic panel and the roof of the present invention;

[0019] Figure 4 This is a schematic diagram of the roof embedded parts of the present invention.

[0020] Figure 5 Schematic diagram of the upper structure of the photovoltaic panel of the present invention.

[0021] Explanation of the markings in the figure: 1. Longitudinal rod; 2. Connecting part; 3. Embedded part; 4. Support claw; 5. Support hinge; 6. Bayonet; 7. Rib. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the connection node between a photovoltaic panel and a roof of the present invention is further described in detail below with reference to the accompanying drawings.

[0023] As shown in FIG1 , the working principle of the connector of the present invention is as follows: Based on the actual construction size and design form, the stress characteristics of the following main parts of the connection node can be analyzed:

[0024] For the embedded parts 3, they mainly play the role of bearing external loads. During the actual construction process, the connector 2 is changed from the storage state to the use state by pulling out the fuse, and the four support claws 4 rotate downward and open to start working, and finally the position of the connector 2 is fixed by the support claws 4. In this case, the support claws 4 are mainly subjected to the shear load directly applied by the longitudinal rod 1.

[0025] Regarding the support claw 4, when it is not in use and stored, it remains vertical and close to the connector 2; when the fuse on the outside of the connector is pulled open, the four support claws are in use and mainly begin to bear the external load transmitted by the longitudinal rod 1, while the connector 2 is under downward pressure. Finally, the connector 2 is fixed by the support claw 4. Because the support claw 4 is made of aluminum alloy, it generally has little deformation and is generally not considered as a weak part during analysis.

[0026] The support hinge 5 mainly bears the bending moment and pressure transmitted from the longitudinal rod 1 through the support claw 4. Since the support hinge 5 is made of angle steel with high strength, good plasticity and regular shape, it generally does not become a weak point of the connector.

[0027] Compared with the existing technology, the connection node between the photovoltaic panel and the roof of the present invention has the following significant advantages: the present invention uses fiberglass profiles as a photovoltaic roof connector without cold or hot bridges, with good mechanical and anchoring properties, corrosion resistance, and low price, which has broad application prospects compared with other connectors on the market.

[0028] Fiberglass has good shear and tensile resistance and excellent thermal insulation properties. Among them, the groove-type connector has the largest cracking load and ultimate load, making it more suitable as a connector for photovoltaic roofs.

[0029] Connector 2 is directly inserted into embedded component 3, eliminating the traditional construction methods of welding and nut connection, making the construction technology simpler and more convenient while lowering the construction threshold. In addition, adding damping material to the embedded component in advance not only greatly increases its seismic resistance, but also protects the connection node and the structure.

[0030] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A connection node between a photovoltaic panel and a roof, characterized in that: It comprises a longitudinal rod (1), a connecting piece (2), and an embedded piece (3); The longitudinal rod (1) and the connecting member (2) are integrally connected; The longitudinal rod (1) plays a supporting role; the connecting member (2) is used to connect the longitudinal rod (1) and the embedded member (3); The connecting member (2) is provided with a bayonet (6), and the bayonet (6) is fixed by a fuse; a support hinge (5) is installed in the bayonet (6), and the connecting member (2) is hinged to the support claw (4) via the support hinge (5); The embedded part (3) is provided with ribs (7); the connecting part (2) is inserted into the embedded part (3); the ribs (7) fix the connecting part (2); The connecting piece (2) has a storage state and a use state; in the storage state, the bayonet (6) is in a fixed state, and the supporting claw (4) remains vertical and close to the connecting piece (2); after the fuse is pulled out, the bayonet (6) becomes a relaxed state, thereby changing to a use state, and the supporting claw (4) rotates downward and opens to start working, and finally the supporting claw (4) fixes the position of the connecting piece (2), and the supporting claw (4) is clamped into the rib (7).

2. The embedded parts and connection nodes between photovoltaic panels and roofs according to claim 1, characterized in that: The support hinge (5) and the support claw (4) are made of angle steel, the top end of the support claw (4) is made of damping material, and the support hinge (5) remains in the open state due to gravity when in the open safety state.

3. The embedded parts and connection nodes between photovoltaic panels and roofs according to claim 2, characterized in that: The connecting piece (2) and the embedded piece (3) are both made of angle steel, and the supporting claw (4) and the supporting hinge (5) are both made of aluminum alloy.

4. The embedded parts and connection nodes between photovoltaic panels and roofs according to claim 3, characterized in that: Corresponding damping material is added to the inner wall of the cavity in the embedded part (3) in advance, and a resin adhesive is used in combination with the embedded part (3) to improve the performance and reduce the gap, thereby improving the anti-seismic ability of the connecting part (2); a certain installation or deformation gap is reserved between the connecting part (2) and the embedded part (3).

Images