Building material type double-sided glass photovoltaic component and manufacturing method thereof

Abstract

The invention discloses a building material type double-sided glass photovoltaic component, comprising a solar cell core panel, an upper protective layer and a lower protective layer which are arranged at the two sides of the solar cell core panel; the upper protective layer and the lower protective layer are curved glass with the same curvature, the solar cell core panel is made of flexible material, and the curvature of the solar cell core panel is the same to the curvature of the upper protective layer and the lower protective layer. The invention also discloses a manufacturing method for the building material type double-sided glass photovoltaic component. The solar cell core panel can be integrated with the upper protective layer and the lower protective layer into a whole, so that the building material type double-sided glass photovoltaic component is formed and has the features of high photoelectric conversion efficiency, stable performance, long service, safety and reliability, heat insulation, heat preservation, sound insulation, ultraviolet protection, breakage resistance and selective light transmission, certain lighting demand is met, the double-sided lighting power generation is also realized, meanwhile the appearance radian is attractive and elegant, the integration of solar energy and building is realized conveniently, and the building material type double-sided glass photovoltaic component is particularly applicable to various buildings such as a photovoltaic glass curtain wall with complicated curves and planes, a photovoltaic glass lighting roof, a photovoltaic parking shed and a photovoltaic bus shelter.

Description

technical field [0001] The invention relates to a building material type photovoltaic component, in particular to a selectable light-transmitting type, high photoelectric conversion efficiency, stable performance, long life, safe and reliable, adopts flexible thin-film solar cell core board and new packaging technology, beautiful appearance, It is convenient to realize solar energy and building integration (BIPV), especially suitable for photovoltaic glass curtain walls with complex surfaces, photovoltaic glass lighting roofs, photovoltaic parking sheds, photovoltaic shelters and other buildings, building material-based double-sided glass photovoltaics based on organic or inorganic substrates member. Background technique [0002] With the development of solar photovoltaic power generation technology today, the application fields of photovoltaic power generation are becoming wider and wider, and the application of solar energy and building integrated design (BIPV) is becoming...

AI Technical Summary

Problems solved by technology

[0003] In the past, ordinary crystalline silicon solar cell components (including monocrystalline silicon and polycrystalline silicon solar cells), thin-film solar cell components (including amorphous silicon, polycrystalline silicon, microcrystalline silicon, cadmium sulfide, cadmium telluride, arsenic gallium, copper indium selenide, copper indium gallium selenide, zinc phosphide, or thin-film solar cells of other multi-component compounds), and has the following disadvantages: 1. The structure safety of conventional solar cell modules is not high, and they cannot be directly used as building components. In terms of installation, it is combined with the building; 2. Conventional solar cell modules use opaque TPT (polyvinyl fluoride composite film) as the backplane protection material, and the light transmission is very poor

Conventional crystalline silicon double-glass solar cell modules have the following defects: 1. The solar cell modules are all flat and of a single style; 2. Crystalline silicon solar cells are easily broken, and it is difficult to produce photovoltaic modules with radians (or slightly larger radians). ;3. It is not suitable for installation on curved surfaces. When meeting curved surfaces, the radian design should be as small as possible, and the method of splicing multiple flat plates will increase the difficulty and cost of installation, and affect the overall appearance; 4. In order to protect the fragile crystal silicon wafer, It is often packaged with thicker tempered glass, and the mass per unit area of ​​the module is too large. At the same time, the strength of the supporting structure is higher, which increases the system cost; gaps to meet the lighting requirements of the building and reduce the power generation per unit area

Conventional thin-film double-glass solar cell modules have the following defects: 1. The film-making method of conventional thin-film solar cells cannot achieve uniform coating on the curved base surface, so that amorphous silicon or other thin-film double-sided glass solar cell modules cannot be directly made into curved 2. It is not suitable for installation on curved surfaces. When meeting curved surfaces, the radian design should be as small as possible, and the way of splicing multiple flat panels will increase the difficulty and cost of installation, and affect the overall appearance; 3. Amorphous silicon or other thin-film solar cells are both The opaque AL film is used as the back electrode, only the laser marking gap of the solar cell unit can transmit a small amount of light, and the light transmission of the whole component is very poor; 4. In order to meet the lighting requirements of the building, laser cross marking is generally used Electrode AL (aluminum) film and thin-film solar cell layer, get a lot of tiny battery cells and light-transmitting gaps, which not only increases the cost of laser scribing operations, but also wastes a lot of effective solar cell area

Therefore, due to the influence of the interconnection structure of the internal junction layers, thin-film solar cells lose more photocurrent to a certain extent, thereby reducing their own photoelectric conversion efficiency.

[0008] In terms of aesthetics, architectural glass curtain walls tend to be single-piece large-sized or curved designs, so conventional solar cell modules cannot meet the requirements for use

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