Crystalline silicon curved surface assembly
The crystalline silicon curved component addresses efficiency and durability issues by segmenting cell strings and using high-efficiency silicon technologies, resulting in reliable, low-cost, defect-free curved solar panels.
Patent Information
- Application Number
- CN202421910996.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-07
AI Technical Summary
In the prior art, the curved photovoltaic module has low power generation efficiency, large attenuation, short life, and the entire crystalline silicon chip is prone to the problems of lobes and hidden cracks on the curved surface.
The crystalline silicon cell is sliced into small cells, and the curved glass plate is divided into multiple segments according to the waveform. An arc transition zone is set at the junction of each segment, and a high-transmissive film layer is packaged. The gap between the battery body is set in the transition zone, and the welding tape is connected to form a series-parallel circuit.
It improves the power generation efficiency and reliability of the components, reduces costs, avoids lobes and crack defects, and realizes efficient and low-cost crystalline silicon surface components.
Smart Images
Figure CN223110419U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of crystalline silicon curved surfaces, and in particular relates to a crystalline silicon curved surface component. Background Art
[0002] BIPV is suitable for most buildings, such as roofs, curtain walls, ceilings, etc. Among them, "photovoltaic tiles" have attracted widespread attention. Photovoltaic tiles are comparable to ceramic roof tiles and can replace traditional tiles such as ceramic tiles and metal tiles as building materials. They are beautiful and compatible with the function of power generation, giving buildings green and low-carbon functions. Photovoltaic tiles are divided into flat tiles and curved tiles, which are matched and applied according to the architectural style.
[0003] In the existing technology, from the perspective of component preparation, flat tile components are similar to conventional photovoltaic components, but the difficulty of preparing curved tiles is much higher. Curved tile components are less used in the industry. In the early stage, some people used copper indium gallium selenide thin films as power generation chips for packaging and application of curved tile components. The bendable characteristics of copper indium gallium selenide chips were utilized, and the components had no abnormalities such as cracks and hidden cracks after lamination. However, with the updating of technology, copper indium gallium selenide chips are becoming less and less. At the same time, compared with crystalline silicon component technology, its technology has low power generation efficiency, large attenuation and short life. Utility Model Content
[0004] The purpose of the utility model is to provide a crystalline silicon curved surface component to solve the technical problems of low power generation efficiency, large attenuation and short life, to achieve high-efficiency crystalline silicon cell power generation technology, and to design the curved surface component curve and the crystalline silicon cell into small units respectively, so as to achieve the purpose of high efficiency, high reliability and low cost of the component.
[0005] In order to solve the above technical problems, the utility model provides a crystalline silicon curved surface component, including:
[0006] A curved front glass plate, a front adhesive film layer, a crystalline silicon cell string layer, a back adhesive film layer and a curved back glass layer, wherein a junction box is arranged on the outward side of the curved back glass layer to electrically connect the crystalline silicon cell string layer, and the curved front glass plate is wavy;
[0007] The crystalline silicon cell string layer comprises a plurality of sliced cell bodies and a plurality of welding strips, wherein the welding strips are connected end to end to the sliced cell bodies, the sliced cell bodies are rectangular and the length direction is the wave extension direction of the curved positive glass plate, and a cell body gap is formed between adjacent sliced cell bodies in the length direction;
[0008] The curved positive glass plate is divided into n equal parts according to the wavelength of the waveform, and the n equal parts are greater than the number of curved surfaces of the curved positive glass plate. The curve of each section of the curved positive glass plate after equal division is a single curve, and the intersection of each n-divided wavelength is set as an arc transition zone, and the battery body gap is set in the arc transition zone.
[0009] Further, the width of the sliced battery body is less than one nth of the wavelength of the curved front glass plate.
[0010] Further, the sliced battery body is formed by cutting the whole battery along the direction perpendicular to the main grid line.
[0011] Further, the solder tapes are connected end to end to the sliced battery body to form a series connection, and adjacent sliced battery bodies are connected in parallel to converge to the junction box for circuit output.
[0012] Further, the sliced battery body adopts one of the crystalline silicon batteries of TOPcon, HJT, PERC, MWT, and BC.
[0013] Further, the front adhesive film layer and the back adhesive film layer adopt one of the high-transparency adhesive films of POE, PVB, EVA, EPE, and SGP.
[0014] Further, the front adhesive film layer is a high-transparency adhesive film.
[0015] Further, the back adhesive film layer is a high-transparency adhesive film, and the color is one of black, white, or color.
[0016] Further, the curved front glass plate adopts one of float glass, embossed glass, AG aesthetic glass, or color aesthetic glass.
[0017] Further, the curved front glass plate and the curved back glass layer adopt curved glass or backplane materials, and the curved back glass layer is provided with an outlet hole for installing the junction box.
[0018] The beneficial effects of the present utility model are as follows:
[0019] 1. By equally dividing the curved front glass plate into n equal parts according to the wavelength of the waveform (n > the number of curves, and each divided curve is a single curve), and arranging the battery body gaps in the arc transition area, it not only solves the problems of low power generation efficiency, large attenuation, and short service life of copper indium gallium selenide curved surface components, but also solves the defects such as cracking and hidden cracking of battery chips caused by the curvature changes in different directions of conventional whole crystalline silicon chips. At the same time, this technology can be superimposed with multiple high-efficiency technologies such as HJT, TOPcon, and BC to achieve the advantages of high efficiency, high reliability, and low cost of the components.
[0020] 2. By forming the sliced battery body by cutting the whole battery along the direction perpendicular to the main grid line, the sliced battery body is close to the curve arc of the corresponding component, and no uneven stress phenomenon will occur, and the finished component has no defects such as cracking and hidden cracking.
[0021] 3. Through the process of fitting the sliced battery bodies, the operation of the overall structure is simple and convenient, and the finished component has no defects such as cracking and hidden cracking.
[0022] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following provides preferred embodiments in conjunction with the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0024] Figure 1 is a schematic structural diagram of the crystalline silicon curved surface component of the present utility model;
[0025] Figure 2 is a side view of the crystalline silicon curved surface component of the present utility model;
[0026] Figure 3 is a schematic structural diagram of the arc transition region of the present utility model;
[0027] Figure 4 is a schematic structural diagram of Embodiment 2 of the present utility model.
[0028] In the figures:
[0029] 1, curved surface front glass plate; 11, arc transition region;
[0030] 2, front - side adhesive film layer;
[0031] 3, crystalline silicon cell string layer; 31, sliced cell body; 32, solder ribbon; 33, cell body gap;
[0032] 4, back - side adhesive film layer;
[0033] 5, curved surface back - glass layer;
[0034] 6, junction box. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some, rather than all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.
[0036] Embodiment 1:
[0037] As shown Figures 1 to 3 in the figure, a crystalline silicon curved surface component includes, in order of full lamination: a curved front glass plate 1, a front adhesive film layer 2, a crystalline silicon cell string layer 3, a back adhesive film layer 4, and a curved back glass layer 5. A junction box 6 is provided on the outer side of the curved back glass layer to electrically connect the crystalline silicon cell string layer 3, and the curved front glass plate 1 is wavy. Among them, the sliced cell body 31 adopts one of the crystalline silicon cells of TOPcon, HJT, PERC, MWT, and BC. The front adhesive film layer 2 and the back adhesive film layer 4 adopt one of the high-transparency adhesive films of POE, PVB, EVA, EPE, and SGP. The front adhesive film layer 2 is a high-transparency adhesive film. The back adhesive film layer 4 is a high-transparency adhesive film, and the color is one of black, white, or color. The curved front glass plate 1 adopts one of float glass, embossed glass, AG aesthetic glass, or colored aesthetic glass. The curved front glass plate 1 and the curved back glass layer 5 adopt curved glass or backplane materials, and the curved back glass layer 5 is provided with an outlet hole for installing the junction box 6.
[0038] As shown Figures 1 to 4 in the figure, the crystalline silicon cell string layer 3 includes a plurality of sliced cell bodies 31 and a plurality of solder tapes 32. The solder tapes 32 are connected head to tail to the sliced cell bodies 31. The sliced cell bodies 31 are rectangular and the length direction is the wavy extension direction of the curved front glass plate 1. A cell body gap 33 is formed between adjacent sliced cell bodies 31 in the length direction; among them, the curved front glass plate 1 is equally divided into n equal parts according to the wavelength of the waveform, and n equal parts are greater than the number of curved surfaces of the curved front glass plate 1. The meaning of the number of curved surfaces is the number of curved surfaces in the waveform of the curved front glass plate 1. The wavy curved front glass plate 1 is composed of a plurality of curved surfaces to form a waveform, and the curve of each section of the equally divided curved front glass plate 1 is a single curve. An arc transition zone 11 is set at the junction of every four equal parts of the wavelength, and the cell body gap 33 is arranged in the arc transition zone 11.
[0039] In this embodiment, the width of the sliced cell body 31 is less than one-fourth of the wavelength of the curved front glass plate 1.
[0040] In this embodiment, the sliced cell body 31 is formed by cutting the whole cell along the direction perpendicular to the main grid line. The integrally cut sliced cell body 31 is not only convenient for processing, but also fits more closely, improving the overall firmness.
[0041] In this embodiment, the solder tapes 32 are connected head to tail to the sliced cell bodies 31 to form a series connection, and the adjacent sliced cell bodies 31 are connected in parallel to converge to the junction box 6 for circuit output.
[0042] In summary: By equally dividing the curved positive glass plate 1 into four equal parts according to the wavelength of the waveform, and setting the battery body gap 33 in the arc transition region 11, the problems of low power generation efficiency, large attenuation, and short lifespan of the copper indium gallium selenide curved surface module are solved, and the defects such as chip cracking and hidden cracking of the battery chips caused by the curvature changes in different directions of the conventional monolithic crystalline silicon chips are also solved. At the same time, this technology can be superimposed with various high-efficiency technologies such as HJT, TOPcon, and BC to achieve the advantages of high efficiency, high reliability, and low cost of the module. By cutting the sliced battery body 31 from the whole battery along the direction perpendicular to the main grid line, the sliced battery body 31 is close to the corresponding curve arc of the module, and the phenomenon of uneven force will not occur. Through the process of fitting the sliced battery body 31, the operation of the overall structure is simple and convenient, and the finished module has no defects such as chip cracking and hidden cracking.
[0043] Embodiment 2:
[0044] As Figures 1 to 4 shown, a crystalline silicon curved surface module, which is different from Embodiment 1 in that the curved surface module is formed by first connecting 24 sliced battery bodies 31 in series. The width of 2 sliced battery bodies 31 is less than the arc length of the shortest curve, and the battery body gap 33 is greater than the arc length of the transition region between adjacent curves. The battery technology is battery technologies such as TOPCON, HJT, and PERC, and there are main grid lines on the front. Among them, the curved surface module first connects 24 sliced battery bodies 31 in series through the welding tape 32, and then conducts circuit connection in the way of two series-parallel or series, and finally converges to the junction box 6 for circuit output.
[0045] All the devices selected in this application are common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or obtained through conventional experimental methods.
[0046] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0047] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0048] Based on the above inspiration from the ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A crystalline silicon curved surface component, characterized in that, Comprising, in sequence of full lamination: A curved front glass plate (1), a front adhesive film layer (2), a crystalline silicon cell string layer (3), a back adhesive film layer (4), and a curved back glass layer (5). A junction box (6) is provided on the outer side of the curved back glass layer to electrically connect the crystalline silicon cell string layer (3). The curved front glass plate (1) is wavy; The crystalline silicon cell string layer (3) includes a plurality of sliced cell bodies (31) and a plurality of solder tapes (32). The solder tapes (32) are connected head to tail to the sliced cell bodies (31). The sliced cell bodies (31) are rectangular and the length direction is the wavy extension direction of the curved front glass plate (1). A cell body gap (33) is formed between adjacent sliced cell bodies (31) in the length direction; The curved front glass plate (1) is equally divided into n equal parts according to the wavelength of the waveform, and n equal parts are greater than the number of curves of the curved front glass plate (1). The curve of each section of the curved front glass plate (1) after equal division is a single curve, and an arc transition area (11) is provided at the junction of each n equal part wavelength. The cell body gap (33) is provided in the arc transition area (11).
2. A crystalline silicon curved surface assembly according to claim 1, wherein The width of the sliced cell body (31) is less than one nth of the wavelength of the curved front glass plate (1).
3. A crystalline silicon curved surface assembly according to claim 2, wherein The sliced cell body (31) is formed by cutting a whole cell along a direction perpendicular to the main grid line.
4. A crystalline silicon curved surface assembly according to claim 3, wherein The solder tapes (32) are connected head to tail to the sliced cell bodies (31) to form a series connection, and adjacent sliced cell bodies (31) are connected in series and parallel to converge to the junction box (6) for circuit output.
5. A crystalline silicon curved surface assembly according to claim 4, wherein The sliced cell body (31) adopts one of crystalline silicon cells such as TOPcon, HJT, PERC, MWT, and BC.
6. A crystalline silicon curved surface assembly according to claim 5, wherein The front adhesive film layer (2) and the back adhesive film layer (4) adopt one of high-transparency adhesive films such as POE, PVB, EVA, EPE, and SGP.
7. A crystalline silicon curved surface assembly according to claim 6, wherein The front adhesive film layer (2) is a high-transparency adhesive film.
8. A crystalline silicon curved surface assembly according to claim 7, wherein The back adhesive film layer (4) is a high-transparency adhesive film, and the color is one of black, white, or colored.
9. A crystalline silicon curved surface assembly according to claim 8, wherein The curved front glass plate (1) adopts one of float glass, embossed glass, AG aesthetic glass, or colored aesthetic glass.
10. A crystalline silicon curved surface assembly according to claim 9, wherein The curved front glass plate (1) and the curved back glass layer (5) adopt curved glass or backplane materials. The curved back glass layer (5) is provided with an outlet hole for installing the junction box (6).