A single-glass assembly of an anti-aging topcon cell

Abstract

The application discloses an anti-aging TOPCon cell piece single-glass assembly, which comprises a cell piece and an externally wrapped frame, the upper and lower sides of the cell piece are respectively provided with upper and lower adhesive films, a back plate is arranged at the bottom of the lower adhesive film, and tempered glass is arranged at the top of the upper adhesive film, a space is reserved between the tempered glass and the upper adhesive film, and a gas leakage structure is arranged on the inner wall of the frame and opposite to the space between the tempered glass and the upper adhesive film. In the application, the space between the tempered glass and the upper adhesive film is used for air expansion and heat dissipation through the gas leakage structure after the air in the space is heated by light during light irradiation, so that the light-induced attenuation of the cell piece can be inhibited.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and in particular to a single-glass module with anti-aging TOPCon solar cells. Background Technology

[0002] Existing boron-doped crystalline silicon solar cells all suffer from light-induced degradation. To reduce this degradation, most manufacturers use high-temperature furnaces to perform anti-degradation treatments on them at the factory, making them as resistant to degradation as possible. However, this not only increases the number of manufacturing steps but also increases the cost of the modules. Summary of the Invention

[0003] To address the aforementioned technical issues, a single-glass module with anti-aging TOPCon solar cells is provided.

[0004] To achieve the above objectives, in a preferred embodiment of the present invention, the battery cell is configured to include an outer frame and a battery cell. An upper adhesive film and a lower adhesive film are respectively provided on the upper and lower sides of the battery cell. A back plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film, and an air venting structure is provided on the inner wall of the frame at the gap between the tempered glass and the upper adhesive film.

[0005] In a preferred embodiment, the present invention may be further configured to include a battery cell and an outer frame. The upper and lower sides of the battery cell are respectively provided with an upper adhesive film and a lower adhesive film. A back plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film, and an air venting structure is provided on the inner wall of the frame relative to the gap between the tempered glass and the upper adhesive film. The air venting structure includes a baffle film. The baffle film is made of a flexible and elastic non-rigid material and is semi-circularly convex. The interior of the baffle film is hollow, and a hole is opened at the apex that communicates with the hole on the outside of the frame. The hole at the top of the baffle film is blocked by a cylinder in the baffle frame mounted on its top.

[0006] In a preferred embodiment, the present invention may be further configured to include a battery cell and an outer frame. The battery cell has an upper adhesive film and a lower adhesive film on its upper and lower sides, respectively. A backing plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film. An air-venting structure is provided on the inner wall of the frame relative to the gap between the tempered glass and the upper adhesive film. The air-venting structure includes a baffle film made of a flexible, elastic, non-rigid material and is semi-circularly convex. The interior of the baffle film is hollow, with a hole at its apex communicating with a hole on the outer side of the frame. The top hole of the baffle film is blocked by a cylinder in a baffle frame mounted on its top. The flexible, elastic, non-rigid material is a silicone sheet.

[0007] In a preferred embodiment, the present invention may be further configured to include a battery cell and an outer frame. The battery cell has an upper adhesive film and a lower adhesive film on its upper and lower sides, respectively. A backing plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film. An air-venting structure is provided on the inner wall of the frame relative to the gap between the tempered glass and the upper adhesive film. The air-venting structure includes a baffle film made of a flexible, elastic, non-rigid material and in a semi-circular convex shape. The interior of the baffle film is hollow, with a hole at its apex communicating with a hole on the outer side of the frame. The top hole of the baffle film is blocked by a cylinder in a baffle frame mounted on its top. The flexible, elastic, non-rigid material is a silicone sheet, and the baffle frame has several perforations.

[0008] In a preferred embodiment, the present invention may be further configured to include a battery cell and an outer frame. The battery cell has an upper adhesive film and a lower adhesive film on its upper and lower sides, respectively. A backing plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film. An air venting structure is provided on the inner wall of the frame relative to the gap between the tempered glass and the upper adhesive film. The air venting structure includes a baffle film made of a flexible, elastic, non-rigid material and is semi-circularly convex. The interior of the baffle film is hollow, with a hole at its apex communicating with a hole on the outer side of the frame. The top hole of the baffle film is blocked by a cylinder in a baffle frame mounted on top. The flexible, elastic, non-rigid material is a silicone sheet. The baffle frame has several perforations. Both the upper and lower adhesive films are made of EVA material.

[0009] In a preferred embodiment, the present invention may be further configured to include a battery cell and an outer frame. The battery cell has an upper adhesive film and a lower adhesive film on its upper and lower sides, respectively. A backing plate is laid at the bottom of the lower adhesive film, and tempered glass is laid at the top of the upper adhesive film. A gap is left between the tempered glass and the upper adhesive film. An air venting structure is provided on the inner wall of the frame relative to the gap between the tempered glass and the upper adhesive film. The air venting structure includes a baffle film made of a flexible, elastic, non-rigid material and is semi-circularly convex. The interior of the baffle film is hollow, with a hole at its apex communicating with a hole on the outer side of the frame. The top hole of the baffle film is blocked by a cylinder in a baffle frame mounted on top. The flexible, elastic, non-rigid material is a silicone sheet. The baffle frame has several perforations. Both the upper and lower adhesive films are made of EVA material, and the gap between the tempered glass and the upper adhesive film is 1-1.5 cm.

[0010] Beneficial effects: The single-glass module of the anti-aging TOPCon solar cell of the present invention, through the gap between the tempered glass and the adhesive film, heats the air in the gap during the illumination process, and the air expands and dissipates the heat through the venting structure. This process can suppress the light-induced degradation of the solar cell. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is an enlarged schematic diagram of part A of the present invention.

[0014] In the diagram, 1 is tempered glass; 2 is the top adhesive film; 3 is the battery cell; 4 is the bottom adhesive film; 5 is the back panel; 6 is the frame; 7 is the retainer; and 8 is the retaining film. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0016] like Figure 1 and Figure 2 As shown, a single-glass module of an anti-aging TOPCon solar cell includes a solar cell 3 and an outer frame 6. The upper and lower sides of the solar cell 3 are respectively provided with an upper adhesive film 2 and a lower adhesive film 4. A back plate 5 is laid at the bottom of the lower adhesive film 4, and tempered glass 1 is laid at the top of the upper adhesive film 2. A gap is left between the tempered glass 1 and the upper adhesive film 2, and an air venting structure is provided on the inner wall of the frame 6 at the gap between the tempered glass 1 and the upper adhesive film 2. The air venting structure can simulate high-temperature baking in a high-temperature furnace, thereby suppressing the problem of light-induced degradation.

[0017] The venting structure includes a baffle 8, which is made of a flexible and elastic non-rigid material and is semi-circularly convex. The interior of the baffle 8 is hollow, and a hole at the apex communicates with the hole on the outside of the frame 6. The hole at the top of the baffle 8 is blocked by a cylinder in the baffle 7 mounted on top of it. When the light heats the gas in the gap, the gas expands and pushes open the baffle 8. The hole at the top of the baffle detaches from the cylinder. At this time, the hot gas in the gap dissipates from the through hole of the frame 6, and the light continues to shine through the dissipation process. The solar cell can be gradually restored by heating and light exposure. Metastable defects in monocrystalline silicon can be transformed from annealed and decayed states to regenerated states. Continuous light exposure during the cooling process can inhibit the transformation to decayed and annealed states, thereby improving photo-regeneration.

[0018] The flexible, elastic, non-rigid material is a silicone sheet, which ensures that the expanding hot air can push the sheet.

[0019] The frame of the baffle 7 has several perforations to prevent the baffle 7 from blocking the hot air from being pushed toward the baffle membrane 8.

[0020] Both the upper adhesive film 2 and the lower adhesive film 4 are made of EVA material.

[0021] The distance between the tempered glass 1 and the adhesive film 2 is 1-1.5cm. If the distance is too large, the area will increase and the heated gas will not be able to apply pressure to push the film to release the gas.

[0022] It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0023] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A single-glass assembly of an anti-aging TOPCon cell, characterized in that, The application relates to a battery piece (3) and an outer wrapping frame (6), the upper and lower sides of the battery piece (3) are respectively provided with upper and lower adhesive films (2) and (4), a back plate (5) is laid at the bottom of the lower adhesive film (4), a tempered glass (1) is laid at the top of the upper adhesive film (2), a space is left between the tempered glass (1) and the upper adhesive film (2), and a gas leakage structure is arranged on the inner wall of the frame (6) at the space between the tempered glass (1) and the upper adhesive film (2), the gas leakage structure comprises a film stopper (8), the film stopper (8) is made of a flexible and elastic non-rigid material, is in a semicircular convex shape, the inside of the film stopper (8) is hollow, a hole is formed at the top of the film stopper (8) and is in communication with a hole on the outer side of the frame (6), the hole at the top of the film stopper (8) is blocked by a cylinder in a stopper frame (7) arranged at the top of the film stopper (8), a plurality of perforated holes are arranged on the frame body of the stopper frame (7), and the space between the tempered glass (1) and the upper adhesive film (2) is 1-1.5 cm.

2. The single-glass assembly of an anti-aging TOPCon cell according to claim 1, wherein The flexible and elastic non-rigid material is a silica gel sheet.

3. The anti-aging TOPCon cell single glass assembly according to claim 2, characterized in that, The upper and lower adhesive films (2) and (4) are made of EVA.

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