Solar cell module

Abstract

The invention discloses a solar cell module, which comprises a plurality of integrated solar cell units connected in series. Each integrated solar cell unit comprises a solar cell and a reverse protection diode, wherein the reverse protection diode is a thin film diode which is integrated to the shady face of the solar cell and reversely connected with the solar cell. According to the solar cell module, the protection diodes and the solar cells are highly integrated, meanwhile, the influences of shadows and uneven light on the power of the solar cell module are further reduced, and light absorption can be increased through the reflected uneven light to increase the generating capacity of the cell module so as to shorten the cost recovery period of a power plant; and in addition, currents capable of being borne by the thin film diodes can further be controlled by adjusting and controlling the area sizes of the thin film diodes without affecting encapsulation and power generation of themodule.

Description

technical field [0001] The disclosure belongs to the technical field of renewable energy, and relates to a solar cell assembly, in particular to a solar cell assembly integrated with solar cells and reverse protection diodes. Background technique [0002] Conventional reverse protection diodes are power electronic devices with high withstand voltage, good rectification characteristics, and large forward current. They are generally made of small semiconductor dies and metal packages, and the outer shape is columnar or block. Due to the high cost and the inability to integrate with solar cells in appearance, currently the cells (about 60 cells) of each cell module are divided into 3 groups, and 3 reverse diodes are installed through the backplane to protect the cells in the module. However, the low open circuit voltage of solar cells needs to be connected in series to form modules, so the modules are extremely sensitive to shadows and uneven light. [0003] In order to reduce...

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Problems solved by technology

[0006] However, the way of connecting batteries in series requires that the output current of each battery be the same, that is, under the premise of the same solar battery quality, the light is uniform. If the light of one battery is blocked, the whole module will output at the low current of this battery. Therefore, Existing diodes cannot be integrated into photovoltaic modules. Shading and uneven light have a great impact on the output power of photovoltaic modules. How to ensure the output power of photovoltaic modules on the basis of integrated protection diodes has become a technical problem that needs to be solved urgently

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