Highly sealed marine photovoltaic module

Abstract

The utility model relates to a kind of high sealing property ocean photovoltaic module, including module frame, the module frame is inlaid with upper glass plate and the lower glass plate below upper glass plate, the upper glass plate with lower glass plate between there is a closed hollow inner chamber, the hollow cavity is arranged with the crystalline silicon cell piece covered by adhesive film, low water penetrant is equipped in the junction between upper glass plate and lower glass plate, and sealant is equipped between the outer side surface of upper glass plate and the inner side surface of module frame.The utility model forms a closed hollow inner chamber between upper glass plate and lower glass plate, crystalline silicon cell piece covered by adhesive film is arranged in hollow cavity, to effectively prevent the corrosion, circuit short-circuit and power attenuation etc. caused by water vapor in seawater to cell piece in use process, improve cell piece service life and the reliability of module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell technology, and in particular to a highly sealed marine photovoltaic module. Background Technology

[0002] With the continuous development of photovoltaic cell technology, the application environment has become more diverse. In particular, marine photovoltaic (such as nearshore floating photovoltaic power stations and offshore platform photovoltaic systems) has attracted much attention due to its broad application potential and resource utilization advantages.

[0003] However, the harsh marine environment places more stringent requirements on the sealing performance of photovoltaic modules. Common marine factors such as high salt spray corrosion, periodic tidal impact, long-term water immersion and high pressure, ultraviolet radiation and biological adhesion can easily cause hydrolysis, delamination or sealing failure of traditional photovoltaic module encapsulation materials (such as EVA film and backsheet composite materials), leading to problems such as cell corrosion, short circuits and power attenuation, which seriously affect the reliability and service life of marine photovoltaic systems. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a highly sealed marine photovoltaic module suitable for use in marine environments.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-sealing marine photovoltaic module, including a module frame, an upper glass plate and a lower glass plate located below the upper glass plate are embedded in the module frame, there is a sealed hollow cavity between the upper glass plate and the lower glass plate, crystalline silicon solar cells covered by an adhesive film are arranged in the hollow cavity, a low water permeability adhesive is provided at the joint between the upper glass plate and the lower glass plate, and a sealant is provided between the outer side of the upper glass plate and the inner side of the module frame.

[0006] Specifically, the upper glass plate has a downward side edge around its four perimeters, and the lower glass plate has an upward side edge around its four perimeters. The upward side edge is located inside the downward side edge, and the upper end surface of the upward side edge is attached to the bottom surface of the upper glass plate to form a hollow cavity for arranging crystalline silicon solar cells.

[0007] Furthermore, the bottom surface of the downward side is flush with the bottom surface of the lower glass plate, the low water permeability adhesive is disposed between the inner side of the downward side and the outer side of the upward side, and the sealant is disposed between the outer side of the downward side and the inner side of the component frame.

[0008] Specifically, the upper glass plate has a folded frame around its four sides, and the lower glass plate has a protrusion. The four sides of the protrusion are engaged with the inner side of the folded frame to form a hollow cavity for arranging crystalline silicon solar cells.

[0009] Furthermore, the four peripheries of the lower glass plate match the four peripheries of the lower folded frame, the low water permeability adhesive is disposed between the bottom surface of the lower folded frame and the upper surface of the lower glass plate outside the protruding boss, and the sealant is disposed between the outer side of the lower folded frame and the outer side of the lower glass plate and the inner side of the component frame.

[0010] The beneficial effects of this utility model are: by forming a sealed hollow cavity between the upper and lower glass plates, the crystalline silicon solar cells covered by the adhesive film are arranged in the hollow cavity, thereby effectively preventing corrosion, short circuits and power attenuation caused by water vapor in seawater to the solar cells during use, improving the service life of the solar cells and the reliability of the module. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure after removing the crystalline silicon solar cell in Embodiment 1 of this utility model.

[0014] Figure 3 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure after removing the crystalline silicon solar cell in Embodiment 2 of this utility model.

[0016] In the diagram: 1. Component frame, 2. Upper glass plate, 3. Lower glass plate, 4. Hollow inner cavity, 5. Encapsulant film, 6. Crystalline silicon solar cell, 7. Low water permeability adhesive, 8. Sealant, 9. Lower side edge, 10. Upper side edge, 11. Lower folded frame, 12. Boss. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] Implementation

[0019] like Figure 1 , Figure 2The diagram shows a high-sealing marine photovoltaic module, including a module frame 1. The module frame 1 is embedded with an upper glass plate 2 and a lower glass plate 3 located below the upper glass plate 2. The upper glass plate 2 has downward sides 9 around its four perimeters, and the lower glass plate 3 has upward sides 10 around its four perimeters. The upward sides 10 are located inside the downward sides 9, and the upper end surface of the upward sides 10 is attached to the bottom surface of the upper glass plate 2. The bottom surface of the downward sides 9 is flush with the bottom surface of the lower glass plate 3. In this way, the lower glass plate 3 is enclosed in the cavity formed by the upper glass plate 2 and the downward sides 9, ultimately forming a hollow inner cavity 4 surrounded by the upper glass plate 2, the lower glass plate 3, and the upward sides 10. Crystalline silicon solar cells 6 covered by a film 5 are arranged at intervals in the hollow inner cavity 4.

[0020] The downward side 9 and the upper glass plate 2, and the upward side 10 and the lower glass plate 3 are all integral structures.

[0021] A low-water-permeability adhesive 7 is embedded between the inner side of the downward side 9 and the outer side of the upward side 10, while a sealant 8 is provided between the outer side of the downward side 9 and the inner side of the module frame 1. The low-water-permeability adhesive 7 seals the joint between the upper glass plate 2 and the lower glass plate 3, while the sealant 8 bonds and seals the glass plate to the frame module 1. This results in a three-layer encapsulation of the photovoltaic module consisting of the adhesive film 5, the low-water-permeability adhesive 7, and the sealant 8, which reduces the probability of water vapor in the seawater intruding into the module during use and improves the reliability of the marine photovoltaic module.

[0022] Implementation Method Two: (e.g.) Figure 3 , Figure 4 The diagram shows a high-sealing marine photovoltaic module, including a module frame 1. The module frame 1 is embedded with an upper glass plate 2 and a lower glass plate 3 located below the upper glass plate 2. The upper glass plate 2 has a downward folded frame 11 around its four sides. The dimensions of the lower glass plate 3 around its four sides match the dimensions of the downward folded frame 11. The lower glass plate 3 has a boss 12. The four sides of the boss 12 are engaged with the inner side of the downward folded frame 11 to form a hollow cavity 4 surrounded by the upper glass plate 2, the upper surface of the boss 12, and the inner side of the downward folded frame 11. Crystalline silicon solar cells 6 covered by a film 5 are arranged at intervals in the hollow cavity 4.

[0023] The lower folded frame 11 and the upper glass plate 2, and the boss 12 and the lower glass plate 3 are all integral structures.

[0024] A low-water-permeability adhesive 7 is provided between the bottom surface of the lower folded frame 11 and the upper surface of the lower glass plate 3 outside the protruding boss 12. The low-water-permeability adhesive 7 mainly seals the joint between the upper glass plate 2 and the lower glass plate 3. A sealant 8 is provided between the outer side of the lower folded frame 11 and the outer side of the lower glass plate 3 and the inner side of the component frame 1. The sealant 8 plays a role in bonding and sealing the glass plate to the frame component 1. Finally, a three-layer encapsulation of the photovoltaic module is formed by the adhesive film 5, the low-water-permeability adhesive 7 and the sealant 8, which reduces the probability of water vapor in the seawater invading into the module during use and improves the reliability of the marine photovoltaic cell module.

[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-sealing marine photovoltaic module, comprising a module frame (1), characterized in that: The component frame (1) is embedded with an upper glass plate (2) and a lower glass plate (3) located below the upper glass plate (2). There is a sealed hollow cavity (4) between the upper glass plate (2) and the lower glass plate (3). Crystalline silicon solar cells (6) covered by adhesive film (5) are arranged in the hollow cavity (4). Low water permeability adhesive (7) is provided at the joint between the upper glass plate (2) and the lower glass plate (3). Sealant (8) is provided between the outer side of the upper glass plate (2) and the inner side of the component frame (1).

2. The high-sealing marine photovoltaic module as described in claim 1, characterized in that: The upper glass plate (2) has a downward side edge (9) around its four perimeters, and the lower glass plate (3) has an upward side edge (10) around its four perimeters. The upward side edge (10) is located inside the downward side edge (9) and the upper end surface of the upward side edge (10) is attached to the bottom surface of the upper glass plate (2) to form a hollow cavity (4) for arranging crystalline silicon solar cells (6).

3. The high-sealing marine photovoltaic module as described in claim 2, characterized in that: The bottom surface of the downward side (9) is flush with the bottom surface of the lower glass plate (3). The low water permeability adhesive (7) is placed between the inner side of the downward side (9) and the outer side of the upward side (10). The sealant (8) is placed between the outer side of the downward side (9) and the inner side of the component frame (1).

4. The high-sealing marine photovoltaic module as described in claim 1, characterized in that: The upper glass plate (2) has a folded frame (11) around its four sides, and the lower glass plate (3) has a boss (12). The four sides of the boss (12) are engaged with the inner side of the folded frame (11) to form a hollow cavity (4) for arranging crystalline silicon solar cells (6).

5. The high-sealing marine photovoltaic module as described in claim 4, characterized in that: The four peripheries of the lower glass plate (3) match the four peripheries of the lower folded frame (11). The low water permeability adhesive (7) is placed between the bottom surface of the lower folded frame (11) and the upper surface of the lower glass plate (3) outside the protruding boss (12). The sealant (8) is placed between the outer side of the lower folded frame (11) and the outer side of the lower glass plate (3) and the inner side of the component frame (1).

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