Solar panel with flexible film

Abstract

The utility model relates to the field of solar panels, in particular to a solar panel with a flexible film, which comprises a battery piece, a mounting hole, a junction box and a supporting assembly. The waterproof light-transmitting layer and the waterproof supporting layer are arranged on the two sides of the battery piece, so that moisture permeation is effectively prevented; the supporting assembly and the solar panel form a stable triangular structure together, so that the supporting stability is remarkably enhanced; the supporting assembly is fixed to the mounting hole through the bandage, so that the mounting steps are simplified, and the mounting efficiency is improved. When the solar panel does not need to be supported, the supporting assembly is easily removed, so that the solar panel is directly attached to the mounting surface to work. The inclination angle of the solar panel is changed by adjusting the length of the second supporting piece so as to obtain the optimal illumination receiving effect. The problem that an existing flexible solar panel lacks effective waterproof and flexible support is solved.

Description

Technical Field

[0001] This utility model relates to the field of solar panel technology, and in particular to a solar panel with a flexible thin film. Background Technology

[0002] Flexible solar panels are lightweight, bendable photovoltaic devices that can adapt to installation surfaces of different shapes and curvatures. Their main function is to convert light energy into electrical energy to charge portable electronic devices, vehicle power systems, and building-integrated photovoltaic systems.

[0003] However, current flexible solar panels lack effective waterproofing and support. Although flexible solar panels with support members fixed to the back have emerged, the support members can hinder the installation of flexible solar panels when they only need to be attached to the roof of a car or the facade of a building.

[0004] Therefore, there is an urgent need for a waterproof, supportive, and flexible thin-film solar panel to meet the diverse application requirements. Utility Model Content

[0005] To address the lack of effective waterproofing and flexible support in existing flexible solar panels.

[0006] This utility model provides a solar panel with a flexible thin film, including solar cells, mounting holes, a junction box, and a support assembly. The solar cells have a waterproof and light-transmitting layer, a first adhesive layer, and a first glass fiber coating arranged sequentially from top to bottom on the upper part, and a second glass fiber coating, a second adhesive layer, and a waterproof support layer arranged sequentially from top to bottom on the lower part. The mounting holes are located at the edges of the solar panel with the flexible thin film and are symmetrically arranged. The junction box and the solar cells are electrically connected. The support assembly includes a first support member and a retractable second support member. One end of the first support member and one end of the second support member are hinged together, and the other ends of both the first and second support members are provided with straps. In use, the straps are connected to the mounting holes, and the tilt angle of the solar panel with the flexible thin film is changed by adjusting the length of the second support member.

[0007] Preferably, the second support member includes an inner tube, an outer tube, and a positioning bolt. The bottom end of the outer tube is hinged to the first support member. The outer tube is provided with a positioning hole. One end of the positioning bolt is screwed into the positioning hole and abuts against the inner tube to fix the inner tube.

[0008] Preferably, the junction box is equipped with at least one of an anti-reverse diode or a bypass diode.

[0009] Preferably, the junction box is connected to an MC4 connector.

[0010] Preferably, there are three pairs of mounting holes, and each pair of mounting holes is equidistant.

[0011] Preferably, the waterproof and light-transmitting layer is one of ETFE, PVF, or TPU; the first adhesive layer is EVA or POE; the solar cell is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell; the second adhesive layer is EVA or POE; and the waterproof support layer is PVC or TPO.

[0012] Preferably, the solar panel with flexible film is obtained by hot pressing together ETFE layer, EVA layer, first glass fiber coating, monocrystalline silicon cell, second glass fiber coating, EVA layer and PVC layer arranged from top to bottom.

[0013] Preferably, the thickness of the solar panel with the flexible film is 2.5mm-3.5mm.

[0014] Preferably, the minimum bending radius of the solar panel with flexible film is 8cm-12cm.

[0015] The beneficial effects of this invention are as follows: by setting waterproof and light-transmitting layers and waterproof support layers on both sides of the solar cell, water penetration is effectively prevented; by setting the support assembly and the solar panel to form a stable triangular structure, the stability of the support is significantly enhanced; by fixing the support assembly to the mounting holes with straps, the installation steps are simplified and the installation efficiency is improved. When the support is not needed, the support assembly can be easily removed, allowing the solar panel to directly adhere to the mounting surface. The tilt angle of the solar panel can be changed by adjusting the length of the second support member to obtain the best light reception effect. This solves the problem of existing flexible solar panels lacking effective waterproofing and flexible support. Attached Figure Description

[0016] Figure 1 A perspective view of a solar panel with a flexible thin film provided by this utility model when bent.

[0017] Figure 2 A perspective view of a solar panel with a flexible thin film provided by this utility model when laid flat.

[0018] Figure 3 A rear view of a solar panel with a flexible thin film provided by this utility model when used alone.

[0019] Figure 4 This is a cross-sectional structural diagram of a solar panel with a flexible thin film provided by this utility model.

[0020] Figure 5 This is a schematic diagram of the series connection of a solar panel with a flexible thin film provided by this utility model.

[0021] Figure 6This is a schematic diagram of the parallel connection of a solar panel with a flexible thin film provided by this utility model.

[0022] In the diagram: 1-Waterproof and light-transmitting layer; 2-First adhesive layer; 3-First fiberglass coating; 4-Battery cell; 5-Second fiberglass coating; 6-Second adhesive layer; 7-Waterproof support layer; 8-Mounting hole; 9-Junction box; 91-MC4 connector; 10-Support assembly; 101-First support member; 102-Second support member; 1021-Inner tube; 1022-Outer tube; 1023-Positioning bolt; 103-Binding strap. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Reference Figures 1-6 A flexible thin-film solar panel includes a solar cell 4, mounting holes 8, a junction box 9, and a support assembly 10. The solar cell 4 has a waterproof and light-transmitting layer 1, a first adhesive layer 2, and a first glass fiber coating 3 arranged sequentially from top to bottom on its upper surface. The solar cell 4 also has a second glass fiber coating 5, a second adhesive layer 6, and a waterproof support layer 7 arranged sequentially from top to bottom on its lower surface. The mounting holes 8 are located at the edges of the flexible thin-film solar panel and are symmetrically arranged. The junction box 9 is electrically connected to the solar cell 4. The support assembly 10 includes a first support member 101 and a retractable second support member 102. One end of the first support member 101 and one end of the second support member 102 are hinged together. The other ends of both the first support member 101 and the second support member 102 are provided with straps 103. In use, the straps 103 are connected to the mounting holes 8, and the length of the second support member 102 is adjusted to change the tilt angle of the flexible thin-film solar panel.

[0025] By setting a waterproof and light-transmitting layer 1 and a waterproof support layer 7 on both sides of the solar cell 4, water penetration is effectively prevented. The support assembly 10, together with the solar panel, forms a stable triangular structure, significantly enhancing the stability of the support. The support assembly 10 is fixed to the mounting hole 8 using straps 103, simplifying the installation process and improving efficiency. When the support is not needed, the support assembly 10 can be easily removed, allowing the solar panel to directly adhere to the mounting surface. The tilt angle of the solar panel can be changed by adjusting the length of the second support member 102 to achieve optimal light reception. This solves the problem of existing flexible solar panels lacking effective waterproofing and flexible support.

[0026] In some embodiments, the second support member 102 includes an inner tube 1021, an outer tube 1022 and a positioning bolt 1023. The bottom end of the outer tube 1022 is hinged to the first support member 101. The outer tube 1022 is provided with a positioning hole. One end of the positioning bolt 1023 is screwed into the positioning hole and abuts against the inner tube 1021 to fix the inner tube 1021.

[0027] Reference Figure 3 The outer tube 1022 is used to accommodate the inner tube 1021 and fixes the position of the inner tube 1021 through the positioning hole and the positioning bolt 1023. By rotating the positioning bolt 1023, its tightness can be adjusted, the inner tube 1021 can be slid, and the overall length of the second support member 102 can be changed, thereby changing the tilt angle of the solar panel with flexible film to obtain the best light reception effect.

[0028] In some embodiments, the junction box 9 is provided with at least one of an anti-reverse diode or a bypass diode.

[0029] When the solar panel is not generating electricity at night or under low light conditions, the anti-reverse current diode prevents the current in the energy storage device from flowing back to the solar panel, thereby protecting the battery cell 4 from damage; the bypass diode is used to prevent hot spot effect and maintain the continuity of power generation of the system.

[0030] In some implementations, junction box 9 is connected to MC4 connector 91.

[0031] Reference Figure 2 The MC4 connector 91 has an IP67 or higher protection rating, preventing moisture and dust from entering the connection point and thus avoiding short circuits or other electrical faults in the solar panel. Furthermore, due to the standardization and versatility of the MC4 connector 91, solar panels can be easily connected to other photovoltaic modules, or connected in series or parallel within the same solar panel, as described above. Figure 5-6 These are schematic diagrams showing the series and parallel connections of the solar panels themselves.

[0032] In some embodiments, the mounting holes 8 are provided in three pairs, and each pair of mounting holes 8 is equidistant.

[0033] Reference Figure 2 By setting three pairs of equidistant mounting holes 8, the weight of the solar panel and the external load are evenly distributed across multiple mounting holes 8, avoiding damage caused by localized stress concentration. Each pair of mounting holes 8 corresponds to a support assembly 10, improving the stability of the solar panel when used alone.

[0034] In some implementations, refer to Figure 4The waterproof and light-transmitting layer 1 is one of ETFE, PVF or TPU, the first adhesive layer 2 is EVA or POE, the solar cell 4 is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell, the second adhesive layer 6 is EVA or POE, and the waterproof support layer 7 is PVC or TPO.

[0035] ETFE, PVF, or TPU layers all offer excellent waterproofing while allowing light to pass through to the solar cell 4, ensuring efficient photoelectric conversion. EVA and POE layers both serve as adhesives. PVC and TPO layers provide excellent waterproofing, effectively preventing moisture penetration into the solar cell 4. TPO layers offer higher mechanical strength and weather resistance, making them suitable for long-term outdoor use, while PVC layers are less expensive, making them suitable for cost control during mass production.

[0036] In some embodiments, a solar panel with a flexible thin film is obtained by hot pressing together layers arranged from top to bottom: an ETFE layer, an EVA layer, a first glass fiber coating 3, a monocrystalline silicon cell 4, a second glass fiber coating 5, an EVA layer, and a PVC layer.

[0037] The hot-pressing process ensures a strong bond between the layers, preventing delamination and extending the lifespan. During hot pressing, pressure is evenly distributed across the entire surface, ensuring no air bubbles or gaps between layers, thus improving the overall stability and waterproofing of the solar panel structure.

[0038] In some implementations, the thickness of the solar panel with the flexible thin film is 2.5mm-3.5mm.

[0039] A thickness of 2.5mm-3.5mm provides sufficient mechanical strength for the solar panel, enabling it to withstand external wind, snow loads, vibrations, etc. when installed on a vehicle roof or building facade. The thickness of 2.5mm-3.5mm also helps to maintain a certain degree of rigidity while keeping the solar panel flexible, allowing it to stand stably and work normally when used alone with the support component 10.

[0040] In some implementations, the minimum bending radius of the solar panel with the flexible thin film is 8cm-12cm.

[0041] Reference Figure 1 A minimum bending radius of 8cm-12cm ensures that the solar panel has a certain degree of flexibility to adapt to various complex installation surfaces, facilitates transportation and installation, and prevents the internal solar cells from being damaged or failing due to excessive bending.

[0042] In the description of the embodiments of this utility model, it should be understood that "-" and "~" represent a range of two values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0043] In the description of the embodiments of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar panel having a flexible film, characterized by: The utility model relates to a solar panel with flexible film, comprising: a battery piece, which is provided with, from top to bottom, a waterproof light-transmitting layer, a first adhesive layer and a first glass fiber coating layer; and a battery piece, which is provided with, from top to bottom, a second glass fiber coating layer, a second adhesive layer and a waterproof support layer; mounting holes, which are symmetrically arranged at the edges of the solar panel with flexible film; a junction box, which is electrically connected to the battery piece; a support assembly, which comprises a first support and a second support that can be extended, one end of the first support and one end of the second support are hinged, and the other end of the first support and the other end of the second support are both provided with a bandage; In use, the bandage is connected to the mounting hole, and the length of the second support is adjusted to change the inclination angle of the solar panel with flexible film.

2. A solar panel with a flexible film according to claim 1, characterized in that: The second support comprises an inner tube, an outer tube and a positioning bolt, the bottom end of the outer tube is hinged to the first support, the outer tube is provided with a positioning hole, and one end of the positioning bolt is screwed into the positioning hole and abuts against the inner tube to fix the inner tube.

3. A solar panel with a flexible film according to claim 1, characterized in that: The junction box is provided with at least one of an anti-backflow diode or a bypass diode.

4. The solar panel with flexible film of claim 1, wherein: The junction box is connected with an MC4 connector.

5. The solar panel with flexible film according to claim 1, wherein: The mounting hole is provided with three pairs of mounting holes, and each pair of mounting holes is equidistantly arranged.

6. A solar panel with a flexible film according to claim 1, characterized in that: The waterproof light-transmitting layer is one of an ETFE layer, a PVF layer or a TPU layer, the first adhesive layer is an EVA layer or a POE layer, the battery piece is a single-crystal silicon battery piece or a polycrystalline silicon battery piece, the second adhesive layer is an EVA layer or a POE layer, and the waterproof support layer is a PVC layer or a TPO layer.

7. A solar panel with a flexible film according to claim 6, characterized in that: The solar panel with flexible film is obtained by hot pressing the ETFE layer, the EVA layer, the first glass fiber coating layer, the single-crystal silicon battery piece, the second glass fiber coating layer, the EVA layer and the PVC layer arranged from top to bottom.

8. The solar panel with flexible film according to claim 1 or 6, characterized in that: The thickness of the solar panel with flexible film is 2.5 mm-3.5 mm.

9. The solar panel with flexible film of claim 1, wherein: The minimum bending radius of the solar panel with flexible film is 8 cm-12 cm.

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