CN219180524U - Curved surface solar cell photovoltaic module - Google Patents

Abstract

The utility model provides a curved surface solar cell photovoltaic module which comprises an upper protective layer, a cell matrix and a lower protective layer which are sequentially arranged from top to bottom, wherein the upper protective layer is connected with the cell matrix and the cell matrix is connected with the lower protective layer through adhesive film layers, the upper protective layer, the adhesive film layers, the cell matrix, the adhesive film layers and the lower protective layer are sequentially stacked and form an integrated structure through a vacuum laminating machine, and sealing adhesive tapes are arranged at the peripheral edges of the integrated structure. The utility model discloses an adjustment different curvature protective layer matches not unidimensional battery piece and adjusts packaging technology, uses the high-efficient solar cell of rigidity on curved surface substrate, has widened photovoltaic module's range of application to on the basis that does not change original terminal system structural performance, increased photovoltaic module's effective power generation area, promote the system generated energy, guaranteed terminal system's aesthetic property and reliability.

Description

Curved surface solar cell photovoltaic module

Technical Field

The utility model mainly relates to the technical field of solar cell photovoltaics, in particular to a curved surface solar cell photovoltaic module.

Background

Solar power generation is a new energy source, has the characteristics of environmental protection, energy saving, inexhaustible performance and the like, and under the current environment with shortage of worldwide resources, solar power generation gains more and more favor for users due to the inherent characteristics, so that a solar module has the effect of converting solar energy into electric energy.

Along with the continuous progress of people's environmental protection theory, photovoltaic application system that constitutes by solar module also receives more and more people's attention, especially in the recent years photovoltaic solar car, curved surface photovoltaic curtain, warmhouse booth receive people's favor constantly, but the crystalline silicon solar module on the market is mostly planar structure now, can't satisfy its application on curved surface products such as roof, curved surface curtain, warmhouse booth. For example: the roof in the market adopts a double-curvature roof structure, and the solar photovoltaic module cannot be attached to the curved roof; the top of the greenhouse adopts a herringbone triangle shape, and the top surfaces of the photovoltaic greenhouses are all designed by adopting plane photovoltaic modules, so that the structural property of the greenhouse is limited; the curved surface photovoltaic curtain wall adopts a mode of curved surface outer wall glass and a photovoltaic module, and can not be effectively combined together, so that the attractiveness and the power generation efficiency are seriously affected.

To sum up, the existing solar photovoltaic module has the following problems: (1) The solar photovoltaic module can not meet the application requirement on the curved surface substrate, or the application of the solar photovoltaic module on the curved surface substrate can influence the performance of an original product system, and even can seriously influence the aesthetic property of an application end system and the power generation efficiency of the module; (2) The existing thin film solar (gallium arsenide) photovoltaic module and flexible CIGS photovoltaic module can meet the application requirements on curved substrates, but the thin film solar (gallium arsenide) photovoltaic module is high in manufacturing cost and cannot be applied in a large area, the conversion efficiency of the flexible CIGS photovoltaic module is low, and the use experience of customers cannot be met.

Disclosure of Invention

The technical scheme of the utility model aims at the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and mainly provides a curved surface solar cell photovoltaic module, so as to solve the technical problem that the prior solar cell photovoltaic module cannot meet the application requirement on a curved surface bottom.

The technical scheme adopted for solving the technical problems is as follows:

the curved surface solar cell photovoltaic module comprises an upper protective layer, a cell matrix and a lower protective layer which are sequentially arranged from top to bottom, wherein the upper protective layer is connected with the cell matrix and the cell matrix is connected with the lower protective layer through adhesive film layers, the upper protective layer, the adhesive film layers, the cell matrix, the adhesive film layers and the lower protective layer are sequentially stacked and form an integrated structure through a vacuum laminating machine, and sealing adhesive tapes are arranged at the peripheral edges of the formed integrated structure; the battery matrix comprises at least one battery single piece, the battery single piece is formed by cutting a battery whole piece, and the battery whole piece is formed into a plurality of battery single pieces by equidistant cutting according to the curvature of the upper protective layer.

Preferably, the upper protective layer is curved glass.

Preferably, the adhesive film layer is an ethylene-vinyl acetate copolymer layer, and the visible light transmittance of the adhesive film layer is more than 85%.

Preferably, the sealing rubber strip is a butyl rubber strip.

Preferably, the lower protective layer is toughened glass.

Preferably, the whole cell is a high-efficiency heterojunction intrinsic thin-film cell.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The curved surface solar cell photovoltaic module is characterized in that different curvature protection layers are adjusted to be matched with battery pieces (cutting pieces) of different sizes and the packaging process is adjusted, so that the rigid high-efficiency solar cell is applied to a curved surface substrate, the solar cell module meets the application requirement of the solar cell module on a curved surface substrate, the application range of the photovoltaic module is widened, the battery pieces can be made of heterojunction intrinsic thin film (HJT) batteries, PERC batteries, back contact (IBC) batteries, metal Wrap Through (MWT) batteries, monocrystalline silicon, polycrystalline silicon solar cells and the like, the manufacturing cost is low, the application can be large, the use experience of customers is met, meanwhile, due to the design of the slicing battery pieces, the curved surface photovoltaic module pressed out in layers cannot generate defects of hidden cracks and the like, and the application range of the photovoltaic module is widened;

(2) The curved surface solar cell photovoltaic module increases the effective power generation area of the photovoltaic module on the basis of not changing the structural performance of the original terminal system, improves the power generation capacity of the system, meets the use experience of customers, avoids the influence of the application of the solar cell photovoltaic module on the curved surface substrate on the performance of the original product system, and simultaneously ensures the attractiveness and reliability of the terminal system;

(3) The curved surface solar cell photovoltaic module adopts high-efficiency solar cells, such as high-efficiency heterojunction intrinsic thin film cells, and the power generation efficiency of the photovoltaic panel is higher than that of a conventional crystalline silicon cell by more than 3%.

The utility model will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic side view of the present utility model;

fig. 2 is a schematic top view of the battery matrix of the present utility model.

In the figure: 1. an upper protective layer; 2. a battery matrix; 3. a lower protective layer; 4. an adhesive film layer; 5. and (5) sealing the adhesive tape.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.

Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a curved surface solar cell photovoltaic module, includes upper protective layer 1, battery matrix 2 and the lower protective layer 3 that top-down arranged in proper order, all pass through glued membrane layer 4 between upper protective layer 1 and the battery matrix 2 and between battery matrix 2 and the lower protective layer 3 and connect.

The upper protective layer 1 is curved glass, the upper protective layer 1 is not limited to the curved glass, other curved materials can be adopted, and the thickness of the curved glass is usually 3-8 mm; when the solar cell photovoltaic module is applied to the roof of an automobile, the upper protective layer 1 can be made of 5mm double-curvature super-white toughened glass, the radius of curvature of the roof ranges from 800mm to 6000mm according to different automobile types, and the double-curvature super-white toughened glass with the radius of curvature of 1500mm and 2000mm is selected as the upper protective layer 1 for subsequent packaging.

The lower protective layer 3 is toughened glass, the lower protective layer 3 is not limited to toughened glass, stainless steel can be adopted, high polymer materials such as PET (polyethylene terephthalate) processed by coating or composite materials TPT, TPE, PAP made of a plurality of materials can also be adopted, and the thickness of the toughened glass is generally 3-8 mm; when the solar cell photovoltaic module is applied to the roof of an automobile, the lower protective layer 3 of the solar cell photovoltaic module adopts a photovoltaic PAP backboard meeting the performance requirement, wherein the PAP backboard is made of a composite material of PET and aluminum, and is a flexible backboard according to the curvature design of the upper protective layer 1 material, and can be completely attached to the upper protective layer 1 with curvature.

The battery matrix 2 comprises at least one battery single chip, the battery single chip is formed by cutting a battery whole piece, the battery whole piece is cut at equal intervals according to the curvature of the upper protective layer 1 to form a plurality of battery single chips, the battery whole piece is a high-efficiency heterojunction intrinsic thin film battery piece, and the power generation efficiency of the solar battery photovoltaic module is higher than that of a conventional crystalline silicon battery piece by adopting the high-efficiency solar battery piece by more than 3%. According to output requirements, the series-parallel connection design can be carried out, the battery piece can also be a PERC battery, a back contact (IBC), a Metal Wrap Through (MWT) battery, a monocrystalline silicon solar battery, a polycrystalline silicon solar battery and the like, the whole piece size of the battery piece is 156mm 156.75mm, 156.75mm 125mm or other sizes existing in the solar field, the battery piece is cut according to the curvature of the upper protective layer 1, the whole piece of the battery piece 156mm is taken as an example, and according to practical tests, for example, the curvature radius is 800 mm-1500 mm, the battery piece is cut into 1/4 of the whole piece, namely the size of the cut battery piece is 39mm 156mm; the radius of curvature is 1500 mm-3000 mm, and the battery piece is cut into 1/3 of the whole piece, namely the size of the cut battery piece is 52 mm/156 mm; the radius of curvature is 3000 mm-600 mm, and the battery piece is cut into 1/2 of the whole piece, namely 78mm x 156mm; cutting into 1/2, 1/3, 1/4 and the like of the whole piece to meet the application requirement of the battery piece in a curved surface product; when the solar cell photovoltaic module is applied to the roof of an automobile, the protective layer 1 is arranged on the roof of the automobile by using double-curvature ultra-white toughened glass with the curvature radius of 1500mm and 2000mm, and the solar cell adopts 1/3 slice, namely 52mm is 156mm of the high-efficiency heterojunction intrinsic thin film (HJT) solar cell.

The adhesive film layer 4 is an ethylene-vinyl acetate copolymer layer, the adhesive film layer 4 is not limited to the ethylene-vinyl acetate copolymer layer, polyvinyl butyral resin, polyolefin materials and derivatives thereof can be adopted, and also can be organic silicon, the visible light transmittance of the adhesive film layer 4 is more than 85%, the adhesive film layer has low enough water vapor transmittance, and the thickness of the adhesive film layer 4 is generally between 0.1mm and 1.5 mm.

The upper protective layer 1, the adhesive film layer 4, the battery matrix 2, the adhesive film layer 4 and the lower protective layer 3 are sequentially stacked and form an integrated structure through a vacuum laminating machine, sealing adhesive tapes 5 are arranged at the peripheral edges of the formed integrated structure, the thickness of an upper packaging layer (the upper packaging layer covers the upper protective layer 1 and the adjacent adhesive film layer 4 thereof but is not limited to the upper protective layer 1 and the adjacent adhesive film layer 4 thereof) is 3-10 mm, and the thickness of a lower packaging layer (the lower packaging layer covers the lower protective layer 3 and the adjacent adhesive film layer 4 thereof but is not limited to the lower protective layer 3 and the adjacent adhesive film layer 4 thereof) is 0.5-10mm.

When the solar cell photovoltaic module is applied to the roof of an automobile, the upper protective layer 1, the adhesive film layer 4, the cell matrix 2, the adhesive film layer 4 and the lower protective layer 3 are sequentially stacked, after the stacking work is completed, the whole solar cell photovoltaic module is put into a vacuum bag of a vacuum laminating machine, and is first subjected to pre-vacuumizing, and the vacuum degree is-80 to-100 KPa at room temperature for 4 to 15 minutes. Then pushing the vacuum bag into a laminating machine, wherein the temperature is 120-160 ℃, the vacuum degree is minus 30-minus 100KPa, and the time is 5-30 min, so that the adhesive film layer 4 is fully melted and crosslinked, and the curved toughened glass, the battery matrix 2 and the PAP backboard are bonded into a whole; and after the vacuum lamination is finished, naturally cooling to room temperature, and testing and packaging.

The sealing rubber strip 5 is a butyl rubber strip, the sealing rubber strip 5 is not limited to the butyl rubber strip, other waterproof sealing rubber strips can be adopted, and the sealing rubber strip 5 is used for sealing the edges of the upper protective layer 1, the adhesive film layer 4, the battery matrix 2, the adhesive film layer 4 and the lower protective layer 3, so that the protection effect on the photovoltaic module is achieved.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.

Claims (6)

1. The utility model provides a curved surface solar cell photovoltaic module, includes upper protective layer (1), battery matrix (2) and lower protective layer (3) that top-down arranged in proper order, its characterized in that: the upper protection layer (1) and the battery matrix (2) and the lower protection layer (3) are connected through the adhesive film layer (4), the upper protection layer (1), the adhesive film layer (4), the battery matrix (2), the adhesive film layer (4) and the lower protection layer (3) are sequentially stacked and form an integrated structure through a vacuum laminating machine, and sealing adhesive tapes (5) are arranged at the peripheral edges of the formed integrated structure;

the battery matrix (2) comprises at least one battery single piece, the battery single piece is formed by cutting a battery whole piece, and the battery whole piece is formed by cutting a plurality of battery single pieces at equal intervals according to the curvature of the upper protective layer (1).

2. The curved solar cell photovoltaic module of claim 1, wherein: the upper protective layer (1) is curved glass.

3. The curved solar cell photovoltaic module of claim 1, wherein: the adhesive film layer (4) is an ethylene-vinyl acetate copolymer layer, and the visible light transmittance is more than 85%.

4. The curved solar cell photovoltaic module of claim 1, wherein: the sealing rubber strip (5) is a butyl rubber strip.

5. The curved solar cell photovoltaic module of claim 1, wherein: the lower protective layer (3) is made of toughened glass.

6. The curved solar cell photovoltaic module of claim 1, wherein: the whole cell is a high-efficiency heterojunction intrinsic thin film cell.

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