Solder strip and flexible solar cell module

Abstract

The invention relates to a solder strip and a flexible solar cell module. The solder strip comprises a first extending part, a stretching part and a second extending part. The stretching part is of acurve segment structure, one end of the stretching part is connected to the first extending part, the other end of the stretching part is connected to the second extending part, the first extending part and the second extending part are collinear, and the curve segment is a sine curve segment of at least one complete period with the connecting point of the stretching part and the first extending part as the origin of coordinates. The flexible solar cell module comprises a flexible substrate, a plurality of solar cells and a flexible packaging film. The solar cells are arranged between the flexible substrate and the flexible packaging film, the plurality of solar cells are connected in series through the solder strips, the first extension parts and the second extension parts of the solder strips are connected to the electrodes of two adjacent solar cells, and the positive electrodes and the negative electrodes of the electrodes of the two adjacent solar cells are different. The flexiblesolar cell module adopting the solder strip provided by the invention realizes relatively large deformation effects such as extensibility, folding and the like of the module.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to welding strips and flexible solar cell components. Background technique [0002] Traditional hard crystalline silicon solar cells dominate the photovoltaic market with the advantages of high efficiency, stability and low cost, and have become a conventional power source in the form of large-scale power stations, and are widely used in large-scale power stations and distributed photovoltaic power stations. However, traditional solar cell modules are usually rigid structures, generally using PET light-transmitting film (about 200 μm thick) + EVA layer (about 500 μm thick) + monocrystalline silicon wafer or polycrystalline silicon wafer (about 180 μm thick) + TPE backlight plate, which Surface density is usually 2.0 ~ 2.5kg / m 2 , resulting in a lack of flexibility in solar cell modules. [0003] In order to make solar cell modules flexible, traditional technologies usually thin solar ce...

AI Technical Summary

Problems solved by technology

However, solar cell materials are usually inorganic materials, which do not have ductility and cannot complete large deformations, so their applications in wearable and other fields are still limited.

In addition, the packaging of traditional flexible solar cell components mainly uses flexible front film, encapsulant, flexible support materials, etc. to realize the flexibility of the cell component. During the deformation process, there are problems such as internal cracks in the solar cell, which will greatly affect the solar energy. Battery stability, resulting in efficiency attenuation or even component failure

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