High-efficiency thin-film solar component battery structure and implementation method thereof

Abstract

The invention relates to a high-efficiency thin-film solar component battery structure and an implementation method thereof, and belongs to the technical field of solar battery application. The technical scheme is as follows: the high-efficiency thin-film solar component battery structure comprises a piece of substrate glass, a front electrode film, a photoelectric absorption layer, a back electrode film, a packaging film and a back board; each photoelectric unit is connected in series to form two or more sets of photoelectric battery parts and then each photoelectric battery part is connected in parallel to form an integral thin-film component structure by adjusting etching times and etching positions of laser isolation channels, namely, each photoelectric unit is connected in series and then connected in parallel to form the integral component battery structure. In the invention, under the precondition that the power is basically not weakened, output voltage of the component can be efficiently reduced by adjusting the series and parallel connection structure among the photoelectric units in the thin-film solar battery component, and the matching flexibility of the thin-film battery component and fittings of a photovoltaic power generation system, such as an inverter, a controller and a storage battery; moreover, the BOS (basic operation system) cost of the system is reduced, and simultaneously the shading resistance performance of the component is efficiently improved.

Description

technical field [0001] The invention relates to a high-efficiency thin-film solar module battery structure and a realization method thereof, in particular to a high-efficiency thin-film solar module battery structure and a realization method capable of effectively reducing module output voltage, and belongs to the technical field of solar battery applications. Background technique [0002] At present, crystalline silicon solar cells have a relatively mature technology, and the power generation efficiency of components can reach 14%-16%, so they occupy a large market share, and their open circuit voltage is often lower than 50V. In order to meet the market demand for crystalline silicon solar cell components in system integration, most inverter manufacturers design and develop inverters for low-voltage and low-power inverters (50V, 200W) and high-voltage and high-power inverters (1000V , 10kW). Thin-film solar cell modules, especially amorphous silicon thin-film solar cell m...

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Problems solved by technology

However, the output voltage of amorphous silicon thin-film solar cell modules is relatively high (more than 100V), and there are the following problems when applied to the integrated design of photovoltaic systems: For photovoltaic power station projects with small areas (such as rooftop power stations), due to low power, The voltage is high, and the optional inverter types are very limited, which is not conducive to system integration

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