Composite frame solar module

Abstract

The utility model discloses a composite frame solar energy assembly which is formed by splicing two long frames with the same specification and two short frames with the same specification, the long frames and the short frames are all made of glass fiber composite materials in an integrated injection molding mode, the cross section structures of the long frames and the short frames are the same, and the long frames and the short frames are both provided with connecting cavities and installing grooves. The thickness of the cavity wall of the connecting cavity ranges from 1.8 mm to 2.4 mm, the connecting cavity is formed below the mounting groove, the long frame and the adjacent short frame are connected through a right-angle positioning corner connector when spliced, the right-angle positioning corner connector is integrally formed by glass fiber composite materials and comprises two inserting arms perpendicular to each other, and the inserting arms are connected with the connecting cavity in a matched mode through the right-angle positioning corner connector. And a matched clamping structure is arranged between the connecting arm and the connecting cavity. Through the above mode, the problem that the frame assembly is easy to age and overlook in a marine environment is solved, and the service life of the photovoltaic assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of solar photovoltaics, in particular to a composite frame solar module. Background Art

[0002] Traditional solar photovoltaic modules are generally made of aluminum alloy materials that are anodized to achieve corrosion resistance with an anti-corrosion oxide film on the surface. This anodized film can meet long-term use requirements under relatively dry and mild conditions inland. However, when installed in coastal areas, especially when the distance from the coastline is less than 50 meters or when a power station is built on the sea, due to the high humidity in the air and the high salt content in the seawater, redox reactions are prone to occur under high temperature conditions, causing the surface oxide film to fail and the service life of the frame to be significantly reduced. In other words, commonly used aluminum alloy frame modules cannot meet the installation requirements in marine environments. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a solar frame component that can adapt to the installation requirements of the marine environment.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a composite frame solar module, the composite frame solar module is composed of two long frames of the same specifications and two short frames of the same specifications spliced at a 45° angle to form a rectangular frame, the long frame and the short frame are both integrally injection-molded by glass fiber composite materials, the long frame and the short frame have the same cross-sectional structure, and are both provided with a connecting cavity and an installation groove, the cavity wall thickness of the connecting cavity is 1.8~2.4mm, the connecting cavity is arranged below the installation groove, the long frame and the adjacent short frame are connected using a right-angle positioning corner code when splicing, the right-angle positioning corner code is integrally molded by glass fiber composite materials, the right-angle positioning corner code includes two mutually perpendicular plug-in arms, when splicing, the two plug-in arms are respectively inserted into the connecting cavity of the adjacent long frame and short frame, and a matching fixing structure is provided between the plug-in arm and the connecting cavity.

[0005] In a preferred embodiment of the present invention, the long and short frames have the same structure and both include a bottom plate, an outer frame plate, an upper pressure plate, a back plate and an inner frame plate. The bottom plate, outer frame plate, back plate and inner frame plate together enclose a connection cavity that is closed on all sides. The portion of the bottom plate that extends beyond the connection cavity constitutes a safety pressing edge. The portion of the outer frame plate that extends beyond the connection cavity together with the upper pressure plate and the back plate encloses an installation groove that opens inward. The top of the inner frame plate is also provided with a card slot in the fixing structure. The width of the safety pressing edge is 15 to 20 mm. The width of the back plate is not less than the width of the upper pressure plate, and the width of the pressing surface of the upper pressure plate is not less than 8 mm. A buffer cavity is also provided on the upper pressure plate.

[0006] In a preferred embodiment of the present invention, a layer of polyurethane composite coating is coated on the surfaces of the long frame and the short frame.

[0007] In a preferred embodiment of the present invention, a card block in the fixing structure is provided on the inner side of the plug-in arm of the right-angle positioning angle code, and a guiding slope facing the insertion direction is provided on the surface of the card block. A deformation absorption structure is provided on the arm body of the plug-in arm, and a buffer groove is provided at the connection position of the two mutually perpendicular plug-in arms. The arm body includes an outer arm plate and an inner arm plate, and the outer arm plate is connected to the inner arm plate by a vertical plate. A deformation absorption cavity is provided in the middle of the inner arm plate, and the inner arm plate and the outer arm plate have the same length, and the length of the vertical plate does not exceed the length of the inner arm plate and the outer arm plate. The ends of the inner arm plate and the outer arm plate that exceed the vertical plate are provided with a trapezoidal plug-in guide structure.

[0008] The beneficial effects of this utility model are as follows: by replacing the existing aluminum alloy frame with a polymer composite material and redesigning the internal structure of the frame based on the characteristics of the polymer composite material, the utility model effectively improves the overall anti-aging performance while meeting the airborne capacity requirements when assembling solar frame modules. In particular, the modules excel in resistance to salt spray and ammonia corrosion, meeting the 1.5 times salt test conditions specified in IEC61215, thus resolving the photovoltaic industry's shortcoming of module aging and corrosion in marine environments. This technology has been applied to various types of crystalline silicon photovoltaic modules, and the modules produced have been successfully exported to eastern Brazil and adopted by several well-known power station construction companies in the region. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the connection structure of a preferred embodiment of the utility model;

[0010] Figure 2 It is a schematic diagram of the cross-sectional structure at position AA in the connection structure shown;

[0011] Figure 3 This is a schematic diagram of the end structure of the frame shown:

[0012] Figure 4 2. It is a schematic diagram of the side view structure of the angle code in the embodiment shown;

[0013] Figure 5 2. It is a schematic diagram of the front view structure of the angle code in the embodiment shown;

[0014] The markings of the components in the accompanying drawings are as follows:

[0015] 1. Long frame, 2. Right angle positioning corner code;

[0016] 101. Bottom plate, 102. Outer frame plate, 103. Upper pressure plate, 104. Back top plate, 105. Inner frame plate, 106. Connecting cavity, 107. Mounting slot, 108. Buffer cavity, 109. Card slot;

[0017] 201. Outer arm plate, 202. Inner arm plate, 203. Deformation absorption chamber, 204. Vertical plate, 205. Block, 206. Buffer groove. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0019] See also Figures 1 to 5 , the embodiments of the present utility model include:

[0020] A composite frame solar panel comprises a rectangular frame formed by two long frames 1 of the same specification and two short frames of the same specification spliced at a 45° angle. The long frames 1 and the short frames are integrally injection-molded from a glass fiber composite material, and the surfaces are coated with a two-component polyurethane composite coating composed of an isocyanate prepolymer and a hydroxyl-containing resin to improve the surface's aging resistance and adapt to the installation requirements of photovoltaic panels in marine environments. The cross-sectional structures of the long frame 1 and the short frame are the same, and both are provided with a connecting cavity 106 and a mounting groove 107. The cavity wall thickness of the connecting cavity 106 is 1.8 to 2.4 mm, and the actual design wall thickness is 2 mm. The reason for adopting this wall thickness is that the material of the composite frame is better resistant to salt and alkali corrosion than the traditional aluminum alloy frame, but the strength is relatively low. Therefore, the design wall thickness of 1.2 to 1.5 mm of the traditional frame is slightly enhanced. The connecting cavity 106 is arranged below the mounting groove 107. The long frame 1 is connected to the adjacent short frame using a right-angle positioning corner code 2 when splicing. The right-angle positioning corner code 2 is integrally formed of a glass fiber composite material. The right-angle positioning corner code 2 includes two mutually perpendicular plug-in arms. When splicing, the two plug-in arms are respectively inserted into the connecting cavity 106 of the adjacent long frame 1 and short frame, and a matching fixing structure is provided between the plug-in arm and the connecting cavity 106.

[0021] The long and short frames 1 have the same structure, both comprising a base plate 101, an outer frame plate 102, an upper pressure plate 103, a back plate 104, and an inner frame plate 105. Together, these base plate 101, outer frame plate 102, back plate 104, and inner frame plate 105 enclose a closed connection cavity 106. The portion of the base plate 101 that extends beyond the connection cavity forms a safety margin. The portion of the outer frame plate 102 that extends beyond the connection cavity 106, together with the upper pressure plate 103 and back plate 104, encloses an inwardly open mounting groove 107. The top of the inner frame plate 105 also features a circular retaining groove 109, which is part of the retaining structure. The width of the safety margin is 15-20 mm, with a practical design width of 18 mm. The width of the back plate 104 is no less than that of the upper pressure plate 103, and the width of the pressing surface of the upper pressure plate 103 is no less than 8 mm. In actual implementation, the upper pressure plate 103 is designed to have a width of approximately 12mm and a thickness of 4mm. This allows for a buffer cavity 108 approximately 1.5mm in height to be provided on the upper pressure plate 103, while the actual design width of the back plate 104 is approximately 15mm. This design increases the width of the upper pressure plate 103 and back plate 104, effectively improving the stability of the photovoltaic module during installation. The increased size of the safety edge helps to distribute the load at the installation location during photovoltaic module installation, improving overall stability.

[0022] The inner side of the plug-in arm of the right-angle positioning bracket 2 is equipped with a retaining block 205, one of the components of the retaining structure. This block 205 is circular and features a guide slope oriented in the insertion direction. The plug-in arm comprises an outer arm plate 201 and an inner arm plate 202, connected by a vertical plate 204. A deformation-absorbing cavity is defined in the center of the inner arm plate 202. The inner and outer arm plates 202 and 201 are of equal length, and the vertical plate 204 does not exceed the length of the inner and outer arm plates 202 and 201, with the actual design length being three-quarters of the length of the outer and inner arm plates 201 and 202. Trapezoidal plug-in guide structures are provided at the ends of the inner and outer arm plates 202 and 201 that extend beyond the vertical plate 204. A buffer slot 206 is provided at the junction of the two perpendicular plug-in arms. This structure can absorb the deformation caused by the downward pressure of the block 205 during the plug-in process. The trapezoidal plug-in guide structure can not only guide the insertion action, but also has a certain elasticity. The buffer groove 206 can buffer the deformation caused by the rapid force on both sides during assembly, and prevent the instantaneous excessive force from causing the plug-in arm connection position to break.

[0023] In practical implementation, the present invention first inserts one of the connector arms of the right-angle positioning bracket 2 into the connecting cavity 106 of one of the adjacent long and short frames 1. During insertion, the locking block 205, guided by the deformation characteristics of the deformation absorption cavity 203 and guided by the guide bevel, enters the connecting cavity 106 and, upon reaching the locking slot 109, pops upward, securing the assembly. Repeating the above steps, all frame structures are connected together to form the entire photovoltaic module outer frame. Because the photovoltaic module outer frame assembled in this manner does not utilize metal components and is coated with a highly weather-resistant polyurethane coating, it is less susceptible to salt-alkali corrosion in the marine environment. Compared to aluminum alloy frames, it is not only cost-effective but also has a longer service life. Field tests have shown that this product meets the following requirements: (1) Class 8 salt spray for 24 hours; (2) 7000 Pa static load test; (3) UV (ultraviolet aging) test requirements of 312 kWh; (4) DH (humid heat aging) test requirements of 2000 hours; and (5) TC (high and low temperature cycling) test requirements of 200 cycles.

[0024] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A composite frame solar panel, comprising a rectangular frame formed by two long frames of the same specifications and two short frames of the same specifications spliced at a 45° angle, wherein the long frames and the short frames are integrally injection-molded from a glass fiber composite material, characterized in that: The long frame and the short frame have the same cross-sectional structure and are both provided with a connecting cavity and an installation slot. The wall thickness of the connecting cavity is 1.8 to 2.4 mm. The connecting cavity is arranged below the installation slot. The long frame and the adjacent short frame are connected using a right-angle positioning corner code when splicing. The right-angle positioning corner code is integrally formed from a glass fiber composite material. The right-angle positioning corner code includes two mutually perpendicular plug-in arms. When splicing, the two plug-in arms are respectively inserted into the connecting cavities of the adjacent long frame and short frame. A matching fixing structure is provided between the plug-in arm and the connecting cavity.

2. The composite frame solar module according to claim 1, characterized in that: The long frame and the short frame have the same structure, both including a bottom plate, an outer frame plate, an upper pressure plate, a back top plate and an inner frame plate. The bottom plate, the outer frame plate, the back top plate and the inner frame plate together enclose a connecting cavity closed on all sides. The part of the bottom plate that extends beyond the connecting cavity constitutes a safety pressing edge. The part of the outer frame plate that extends beyond the connecting cavity together with the upper pressure plate and the back top plate encloses an installation groove open to the inside. The top of the inner frame plate is also provided with a card slot in the fixing structure.

3. The composite frame solar module according to claim 2, characterized in that: The width of the safety edge is 15 to 20 mm.

4. The composite frame solar module according to claim 2, characterized in that: The width of the back top plate is not less than the width of the upper pressing plate, and the width of the pressing surface of the upper pressing plate is not less than 8 mm.

5. The composite frame solar module according to claim 2, characterized in that: The upper pressing plate is also provided with a buffer cavity.

6. The composite frame solar module according to claim 1, characterized in that: A layer of polyurethane composite coating is coated on the surfaces of the long frame and the short frame.

7. The composite frame solar module according to claim 1, characterized in that: The inner side of the plug-in arm of the right-angle positioning angle code is provided with a clamping block in the clamping structure, the arm body of the plug-in arm is provided with a deformation absorption structure, and the connection position of the two mutually perpendicular plug-in arms is provided with a buffer groove.

8. The composite frame solar module according to claim 7, characterized in that: The arm body includes an outer arm plate and an inner arm plate, the outer arm plate and the inner arm plate are connected by a vertical plate, a deformation absorption cavity is provided in the middle of the inner arm plate, and the inner arm plate and the outer arm plate have the same length, and the length of the vertical plate does not exceed the length of the inner arm plate and the outer arm plate.

9. The composite frame solar module according to claim 8, characterized in that: The ends of the inner arm plate and the outer arm plate that exceed the vertical plate are provided with a trapezoidal plug-in guide structure.

10. The composite frame solar module according to claim 7, characterized in that: The surface of the clamping block is provided with a guiding slope facing the insertion direction.

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