High-strength flexible assembly

Abstract

The invention belongs to the photovoltaic field, and particularly relates to a high-strength flexible assembly. According to the technical scheme, the high-strength flexible assembly comprises a flexible photovoltaic assembly and a back plate; the back plate comprises a main body and a reinforcing area, the reinforcing area comprises a plurality of concave areas formed on the main body, each concave area comprises a fitting plane and a connecting surface connected with the fitting plane and the main body, and the back surface of the flexible photovoltaic module is fitted on the fitting plane. The flexible assembly and the backboard are attached to form the high-strength flexible assembly, the strength of the flexible assembly can be remarkably improved, meanwhile, light weight of the assembly is guaranteed, and the application scene of the flexible assembly is widened. The connecting surface can be used as a heat dissipation surface, the heat dissipation area can be effectively increased, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaics, and in particular relates to a high-strength flexible component. Background Art

[0002] Lightweight photovoltaic modules are an emerging direction in the photovoltaic industry and are currently in a rapid development stage. At this stage, the development of lightweight photovoltaic modules is mainly concentrated in the following aspects: 1. Material innovation: Lightweight photovoltaic modules use new lightweight materials to replace traditional glass substrates, such as polymer materials, composite materials, etc., to reduce the weight of the module and improve flexibility. 2. Technological progress: With the continuous advancement of technology, the photoelectric conversion efficiency of lightweight photovoltaic modules has gradually improved, and some products have been able to achieve efficiencies comparable to or even higher than traditional modules. 3. Application expansion: Lightweight photovoltaic modules are highly adaptable and can be used in fields such as building integration and vehicle-mounted photovoltaics, expanding the application scenarios of photovoltaics.

[0003] However, lightweight photovoltaic modules also face some problems in the process of development, among which strength is an important consideration: 1. Structural strength: Some lightweight materials may not be as strong as glass and are easily affected by external impacts or wind pressure. Structural design needs to be strengthened to ensure the stability and safety of the modules. 2. Durability: Some lightweight materials may experience aging, fatigue and other problems during long-term use, which will affect the service life of the modules. Material selection and process control need to be strengthened. 3. Safety: Lightweight photovoltaic modules may have safety hazards under extreme climatic conditions, such as wind disasters and hail. It is necessary to strengthen the design of wind pressure resistance and impact resistance. Summary of the invention

[0004] In order to solve the problem of low strength of lightweight photovoltaic components in the prior art, the present invention provides a high-strength flexible component.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-strength flexible component, including a flexible photovoltaic component and a back panel; the back panel includes a main body and a reinforcement area, the reinforcement area includes a plurality of recessed areas formed on the main body, the recessed area includes a bonding plane and a connecting surface connecting the bonding plane and the main body, and the back side of the flexible photovoltaic component is bonded to the bonding plane.

[0006] In some embodiments, the bonding plane is polygonal, the number of the corresponding connecting surfaces is the same as the number of sides of the bonding plane, and the bonding plane and the plurality of connecting surfaces enclose the recessed area.

[0007] In some embodiments, the connecting surface is inclined, the recessed area is flared at one end away from the connecting surface, and the recessed depth of the recessed area is 10 to 50 mm.

[0008] In some embodiments, the side of the bonding plane that is bonded to the flexible photovoltaic component has a pattern, an adhesive layer is provided on the bonding plane for bonding with the flexible photovoltaic component, and a reflective coating is provided on the connecting surface.

[0009] In some embodiments, the back plate further includes a transition zone, and the transition zone is also provided with a plurality of the recessed zones, and a density of the recessed zones in the transition zone is less than a density of the recessed zones in the reinforcement zone.

[0010] In some embodiments, the back panel further includes a surrounding panel, which extends vertically from the edge of the main body and is used to cover the side surfaces of the flexible photovoltaic component.

[0011] In some embodiments, the enclosure further has a folded edge at one end away from the main body, the folded edge extends toward the flexible photovoltaic component, the flexible photovoltaic component is clamped between the folded edge and the main body, and the folded edge has a water diversion groove.

[0012] In some embodiments, the back plate is made of aluminum alloy, stainless steel, titanium alloy or a composite material.

[0013] In some embodiments, the flexible photovoltaic module includes a panel, an encapsulation film, a battery cell and a base plate, the panel and the base plate use the encapsulation film to encapsulate the battery cell between the two, the base plate material is one of TPT, TPE, TPC or CPC; the encapsulation film material is one of EVA, POE, EPE or PVB; the panel material is one of glass, polyester film, polyesterimide film.

[0014] In some embodiments, the flexible photovoltaic module further includes a junction box, and the junction box is installed in the non-recessed area of ​​the back plate.

[0015] Beneficial effect: The flexible component of the present invention is bonded to the back plate to form a high-strength flexible component, which can significantly improve the strength of the flexible component, while ensuring the lightweight of the component and broadening the application scenarios of the flexible component. The connection surface can also be used as a heat dissipation surface to effectively increase the heat dissipation area and improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A bottom view of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Section view in the AA direction;

[0018] Figure 3 is a cross-sectional view of another embodiment;

[0019] Figure 4 A bottom view of an embodiment;

[0020] Figure 5 A bottom view of another embodiment;

[0021] Figure 6 A bottom view of another embodiment;

[0022] Figure 7 It is a bottom view of another embodiment.

[0023] In the figure, 1. back plate, 11. reinforcement area, 12. transition area, 13. enclosure, 14. folded edge, 15. water diversion channel, 2. recessed area, 21. bonding plane, 22. connection surface, 3. flexible photovoltaic module, 31. panel, 32. packaging film, 33. battery cell, 34. bottom plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific implementation methods. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative changes belong to the protection scope of the present invention.

[0025] Traditional photovoltaic modules in the prior art have a large weight, which does not meet the demand for lightweight development of photovoltaic modules and is limited in some application scenarios. Flexible photovoltaic modules 3 are flexible and can be bent or folded, and have high flexibility and adaptability, and are particularly suitable for installation on curved surfaces. They also have the advantage of being lightweight. However, in some cases, photovoltaic modules are not only required to be flexible and suitable for installation on curved or irregular surfaces, but also required to have strength to improve the stability of the module and to be able to resist wind disasters, hail and other safety. For example, when used as part of the exterior wall or roof of a building, its shape must not only change with the outer shape of the exterior wall or roof, but also have the strength to resist wind disasters and hail. The high-strength flexible module of the present invention has the advantages of both flexibility and strength, and can meet the trend of lightweight photovoltaic modules.

[0026] like Figures 1 to 7 As shown, the present invention provides a high-strength flexible component, including a flexible photovoltaic component 3 and a back panel 1; the back panel 1 includes a main body and a reinforcement area 11, the reinforcement area 11 includes a plurality of recessed areas 2 formed on the main body, the recessed areas 2 include a bonding plane 21 and a connecting surface 22 connecting the bonding plane 21 and the main body, and the back side of the flexible photovoltaic component 3 is bonded to the bonding plane 21.

[0027] In the present invention, the flexible photovoltaic module 3 is combined with the back sheet 1, and the back sheet 1 can be pre-set to a corresponding shape according to the actual use scenario, such as being bent into a shape with a certain curvature, and the flexible photovoltaic module 3 with flexibility is attached thereto, so as to form a high-strength flexible module of the present invention, and at the same time, a reinforcement area 11 is formed on the back sheet 1 to improve the overall strength of the module. Moreover, the attachment plane 21 and the connection surface 22 naturally form a heat dissipation surface, which improves the overall heat dissipation effect of the module.

[0028] In some embodiments, the bonding plane 21 is polygonal, and the number of the corresponding connecting surfaces 22 is the same as the number of sides of the bonding plane 21. The bonding plane 21 and the plurality of connecting surfaces 22 enclose the recessed area 2. Figure 1 , 4 As shown in , 5, 6 and 7, the polygon can be an equilateral triangle, a square, a regular pentagon, a regular hexagon, a regular heptagon, etc.

[0029] In some embodiments, Figure 2 and 3 The connecting surface 22 is inclined, the concave area 2 is flared at one end away from the connecting surface 22, and the concave depth of the concave area 2 is 10 to 50 mm. The inclined setting of the connecting surface 22 can increase the area of ​​the connecting surface 22, increase the heat dissipation area, and facilitate the dissipation of heat.

[0030] In some embodiments, the side of the bonding plane 21 that is bonded to the flexible photovoltaic module 3 has a pattern, and an adhesive layer is provided on the bonding plane 21 for bonding with the flexible photovoltaic module 3, and a reflective coating (not shown in the figure) is provided on the connecting surface 22. The pattern is provided on the bonding plane 21 to increase the bonding strength of the adhesive layer, so that the bonding with the flexible photovoltaic module 3 is tighter. By adding a reflective coating, the light entering from the gap of the battery cell 33 can be reflected to the battery cell 33, thereby improving efficiency.

[0031] Figure 4 The main body of the back plate 1 is provided with only the reinforcement area 11. In some embodiments, for example Figures 5 to 7 As shown, the back plate 1 also includes a transition zone 12, and the transition zone 12 is also provided with a plurality of the recessed areas 2, and the density of the recessed areas 2 in the transition zone 12 is less than the density of the recessed areas 2 in the reinforcement zone 11. During the installation process, since there will be support such as a bracket at the bottom of the component, the bracket will also increase the strength of its supporting part. Therefore, the transition zone 12 can be set at these positions to reduce the processing load and difficulty. The transition zone 12 can be set along the long side of the component (such as Figure 7 as shown) or short edge setting (as shown Figure 5 and 6 As shown), it can be set close to the edge (as Figure 5 and7 As shown), it can also be set close to the middle (as shown Figure 6 As shown). The shapes of the transition area 12 and the recessed area 2 can be the same or different, such as setting the fitting plane 21 of the recessed area 2 to be a regular hexagon, and setting the fitting plane 21 of the transition area 12 to be a square, a triangle or other shapes.

[0032] In some embodiments, in order to better support and protect the flexible photovoltaic assembly 3, the back plate 1 further includes a panel 13, which extends vertically from the edge of the main body and is used to cover the side of the flexible photovoltaic assembly 3. The panel 13 can cover the side of the flexible photovoltaic assembly 3.

[0033] In some embodiments, in order to better support and protect the flexible photovoltaic component 3 and prevent the flexible photovoltaic component 3 from being separated from the back panel 1, the enclosure 13 has a folded edge 14 at one end away from the main body, and the folded edge 14 extends toward the flexible photovoltaic component 3. The flexible photovoltaic component 3 is clamped between the folded edge 14 and the main body, and the folded edge 14 has a water diversion groove 15.

[0034] In some embodiments, the back plate 1 is made of aluminum alloy, stainless steel, titanium alloy or a composite material.

[0035] In some embodiments, Figure 2 and 3 As shown, the flexible photovoltaic module 3 includes a panel 31, a packaging film 32, a battery cell 33 and a base plate 34. The panel 31 and the base plate 34 use the packaging film 32 to encapsulate the battery cell 33 between the panel 31 and the base plate 34. The base plate 34 is made of one of TPT, TPE, TPC or CPC; the packaging film 32 is made of one of EVA, POE, EPE or PVB; the panel 31 is made of one of glass, polyester film, and polyesterimide film.

[0036] In some embodiments, the flexible photovoltaic module 3 further includes a junction box, which is installed in the non-recessed area 2 of the back plate 1 (not shown in the figure). The junction box is usually arranged in the flexible photovoltaic module 3. The present invention utilizes the structure of the recessed area 2 of the back plate 1 to install the junction box in the non-recessed area, which not only increases the surface flatness of the flexible photovoltaic module 3, but also is more conducive to the heat dissipation of the junction box.

[0037] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A high-strength flexible component, characterized in that: The invention comprises a flexible photovoltaic module (3) and a back plate (1); the back plate (1) comprises a main body and a reinforcement area (11); the reinforcement area (11) comprises a plurality of recessed areas (2) formed on the main body; the recessed areas (2) comprise a bonding plane (21) and a connecting surface (22) connecting the bonding plane (21) and the main body; the back surface of the flexible photovoltaic module (3) is bonded to the bonding plane (21).

2. The high-strength flexible component according to claim 1, characterized in that: The bonding plane (21) is polygonal, the number of the corresponding connecting surfaces (22) is the same as the number of sides of the bonding plane (21), and the bonding plane (21) and the plurality of connecting surfaces (22) enclose the recessed area (2).

3. The high-strength flexible component according to claim 1 or 2, characterized in that: The connecting surface (22) is arranged obliquely, and the recessed area (2) is in a flared shape at the end away from the connecting surface (22), and the recessed depth of the recessed area (2) is 10 to 50 mm.

4. The high-strength flexible component according to claim 2, characterized in that: The side of the bonding plane (21) that is bonded to the flexible photovoltaic module (3) has a pattern, an adhesive layer is provided on the bonding plane (21) for bonding to the flexible photovoltaic module (3), and a reflective coating is provided on the connecting surface (22).

5. The high-strength flexible component according to claim 1 or 2, characterized in that: The back plate (1) further comprises a transition zone (12), wherein the transition zone (12) is also provided with a plurality of recessed zones (2), and the density of the recessed zones (2) in the transition zone (12) is smaller than the density of the recessed zones (2) in the reinforcement zone (11).

6. The high-strength flexible component according to claim 1, characterized in that: The back panel (1) further comprises a surrounding panel (13), wherein the surrounding panel (13) extends vertically from the edge of the main body and is used to cover the side surface of the flexible photovoltaic component (3).

7. The high-strength flexible component according to claim 6, characterized in that: The enclosure (13) has a folded edge (14) at one end away from the main body, the folded edge (14) extends toward the flexible photovoltaic component (3), the flexible photovoltaic component (3) is clamped between the folded edge (14) and the main body, and the folded edge (14) has a water diversion groove (15).

8. The high-strength flexible component according to claim 1, characterized in that: The back plate (1) is made of aluminum alloy, stainless steel, titanium alloy or a composite material.

9. The high-strength flexible component according to claim 1, characterized in that: The flexible photovoltaic module (3) comprises a panel (31), a packaging film (32), a battery cell (33) and a base plate (34); the panel (31) and the base plate (34) use the packaging film (32) to package the battery cell (33) between the panel (31) and the base plate (34); the base plate (34) is made of one of TPT, TPE, TPC or CPC; the packaging film (32) is made of one of EVA, POE, EPE or PVB; the panel (31) is made of one of glass, polyester film and polyesterimide film.

10. The high-strength flexible component according to claim 1 or 9, characterized in that: The flexible photovoltaic assembly (3) further comprises a junction box, wherein the junction box is installed in the non-recessed area of ​​the back plate (1).

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