Anti-warping light crystalline silicon assembly

Abstract

The utility model discloses an anti-warping light crystalline silicon assembly, which comprises a fluorine-containing transparent front plate, a glass fiber composite material layer, a battery string and a reinforced back plate which are arranged in sequence, the fluorine-containing transparent front plate and the glass fiber composite material layer are bonded together through an adhesive; the glass fiber composite material layer and the battery string are bonded together through a first adhesive film; the reinforced back plate and the battery string are bonded together through a second adhesive film; according to the utility model, the glass fiber composite material layer is additionally arranged between the fluorine-containing transparent front plate and the first adhesive film, and the fluorine-containing transparent front plate and the glass fiber composite material layer are laminated into an integrated structure during lamination, so that the stiffness of the fluorine-containing transparent front plate is increased, and the stiffness of the front plate and the back plate at the two sides of the battery string is consistent; and the condition that the front plate is not warped after the crystal silicon assembly is laminated is ensured, and the hidden crack risk caused by the warpage of the crystal silicon assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic components, in particular to a warping-resistant lightweight crystalline silicon component. Background Art

[0002] Lightweight crystalline silicon modules are a type of photovoltaic module. They are lightweight and can meet the needs of roof environments with lower loads, reducing pressure on roof structures, improving safety, and perfectly solving the problem of insufficient roof load. Existing lightweight modules generally adopt a structural design of a front panel, film, battery, film, and back panel. For example, Chinese Patent 2020105138371 discloses a flexible crystalline silicon module. The module is formed by hot pressing and includes a battery string sequence, which includes a battery string, and the battery string includes battery cells. The battery string is formed by connecting several battery cells with conductive adhesive, which can increase the overall flexibility of the battery string and reduce the overall brittleness, while also ensuring the power generation efficiency of the entire battery string. At the same time, the battery string sequence is formed by connecting several battery strings with punched welding strips. This can increase the overall flexibility of the battery string sequence. After hot pressing, the overall flexibility is increased and brittle fracture is less likely to occur. The battery strings can also be assembled according to the required size to save costs.

[0003] However, at present, high-molecular fluorine-containing materials are generally used instead of glass as the front panel packaging material for making lightweight components. The fluorine-containing transparent front panel is composed of a reinforced PET core material and a fluorine-containing film. Due to the difference in tension between the front panel material and the back panel, the front panel is soft and has low stiffness. After high-temperature lamination, the crystalline silicon component will show warping at the four corners of the front panel. The warping of the crystalline silicon component not only has a certain negative impact on the appearance of the component, but also increases the risk of hidden cracks if the warping is large, and will also affect the installation of the crystalline silicon component during the later construction and installation process. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a warping-resistant lightweight crystalline silicon component, which can solve the problem that the crystalline silicon component is easily warped on all sides during the lamination process and reduce the risk of hidden cracks in the crystalline silicon component.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] A warping-resistant lightweight crystalline silicon component comprises a fluorine-containing transparent front plate, a glass fiber composite material layer, a battery string, and a reinforced back plate arranged in sequence; the fluorine-containing transparent front plate and the glass fiber composite material layer are bonded together by an adhesive; the glass fiber composite material layer and the battery string are bonded together by a first adhesive film; and the reinforced back plate and the battery string are bonded together by a second adhesive film.

[0007] In the above-mentioned anti-warping lightweight crystalline silicon component, the fluorine-containing transparent front plate is composed of a reinforced PET core plate and a fluorine-containing film.

[0008] In the above-mentioned anti-warping lightweight crystalline silicon component, the fluorine-containing film is a PVDF film.

[0009] In the above-mentioned anti-warping lightweight crystalline silicon component, the glass fiber composite material layer is composed of glass fiber composite material.

[0010] In the above-mentioned warping-proof lightweight crystalline silicon component, the first adhesive film and the second adhesive film are made of EVA adhesive films with high transparency and high adhesion.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is as follows.

[0012] The utility model provides a warping-resistant lightweight crystalline silicon component. By adding a glass fiber composite material layer between a fluorine-containing transparent front plate and a first layer of adhesive film, the fluorine-containing transparent front plate and the glass fiber composite material layer are laminated into an integrated structure during lamination, thereby increasing the stiffness of the fluorine-containing transparent front plate, making the stiffness of the front plate and the back plate on both sides of the battery string consistent, ensuring that the front plate of the crystalline silicon component will not warp after lamination, and reducing the risk of hidden cracks caused by warping of the crystalline silicon component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the specific structure of the utility model.

[0014] Among them: 1. Fluorine-containing transparent front plate, 2. Glass fiber composite material layer, 3. First adhesive film, 4. Battery string, 5. Second adhesive film, 6. Strengthened back plate. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] A warping-resistant lightweight crystalline silicon component, such as Figure 1 As shown, it includes a fluorine-containing transparent front plate 1, a glass fiber composite material layer 2, a battery string 4, and a reinforced back plate 6 arranged in sequence. The fluorine-containing transparent front plate 1 and the glass fiber composite material layer 2 are bonded together by an adhesive, the glass fiber composite material layer 2 and the battery string 4 are bonded together by a first adhesive film 3, and the reinforced back plate 6 and the battery string 4 are bonded together by a second adhesive film 5.

[0017] The fluorine-containing transparent front plate 1 is composed of a reinforced PET core material plate and a fluorine-containing film, and the fluorine-containing film is generally selected from PVDF film.

[0018] PET core material, commonly known as polyester resin, is a closed-cell thermoplastic structure with certain shear and compression strength. It is generally used as a composite sandwich structure.

[0019] PVDF film is a highly non-reactive thermoplastic fluoropolymer with excellent properties such as anti-aging, weather resistance, and resistance to ultraviolet radiation.

[0020] The glass fiber composite material layer 2 is composed of a glass fiber composite material, which refers to a composite material composed of glass fiber and its derivatives, resin, plasticizer, additives, etc., wherein the glass fiber as a reinforcing material can provide good strength and rigidity, while the resin as a base material can provide the material with toughness and corrosion resistance, and can also act as an adhesive to tightly fix the glass fibers together.

[0021] The first adhesive film 3 and the second adhesive film 5 are made of EVA adhesive film, which has high transparency and high adhesion, and can also effectively resist high temperature, moisture, ultraviolet rays, etc.

[0022] During the lamination process, the fluorine-containing transparent front plate 1 and the glass fiber composite material layer 2 are laminated into an integrated structure, so that the stiffness of the front plate and the back plate on both sides of the battery string are consistent after lamination, avoiding warping of the front plate during the lamination process.

[0023] The utility model provides a warping-resistant lightweight crystalline silicon component. By adding a glass fiber composite material layer between a fluorine-containing transparent front plate and a first layer of adhesive film, the fluorine-containing transparent front plate and the glass fiber composite material layer are laminated into an integrated structure during lamination, thereby increasing the stiffness of the fluorine-containing transparent front plate, making the stiffness of the front plate and the back plate on both sides of the battery string consistent, ensuring that the front plate of the crystalline silicon component will not warp after lamination, and reducing the risk of hidden cracks caused by warping of the crystalline silicon component.

Claims

1. A warpage-resistant lightweight crystalline silicon component, characterized by: The invention comprises a fluorine-containing transparent front plate (1), a glass fiber composite material layer (2), a battery string (4), and a reinforced back plate (6) arranged in sequence; the fluorine-containing transparent front plate (1) and the glass fiber composite material layer (2) are bonded together by an adhesive; the glass fiber composite material layer (2) and the battery string (4) are bonded together by a first adhesive film (3); and the reinforced back plate (6) and the battery string (4) are bonded together by a second adhesive film (5).

2. The anti-warping lightweight crystalline silicon component according to claim 1, characterized in that: The fluorine-containing transparent front plate (1) is composed of a reinforced PET core plate and a fluorine-containing film.

3. The anti-warping lightweight crystalline silicon component according to claim 2, characterized in that: The fluorine-containing film is a PVDF film.

4. The anti-warping lightweight crystalline silicon component according to claim 1, characterized in that: The glass fiber composite material layer (2) is composed of glass fiber composite material.

5. The anti-warping lightweight crystalline silicon component according to claim 1, characterized in that: The first adhesive film (3) and the second adhesive film (5) are made of EVA adhesive films with high transparency and high adhesion.

Images