Anti-shielding photovoltaic assembly with high system power generation efficiency

Abstract

The invention relates to an anti-shielding photovoltaic assembly with high system power generation efficiency. The assembly includes a solar cell module, the solar cell module is formed by series connection of a plurality of cell strings arranged in a matrix. The plurality of battery strings are formed by connecting a plurality of battery pieces in series; in the same battery string, every two adjacent battery pieces are connected in series through an interconnecting strip, each interconnecting strip is communicated with an electric conductor, each electric conductor is provided with a light reflecting structure, a diode is arranged on the face, opposite to light, of each electric conductor, and the diodes are electrically connected with the battery pieces. The diode is arranged below theelectric conductor, so that the problems of aging, overheating damage and the like of the diode under long-term sunlight irradiation are avoided.

Description

technical field [0001] The invention relates to the technical field of solar cell components, in particular to an anti-shading photovoltaic component with high system power generation efficiency. Background technique [0002] The circuit design of photovoltaic modules is generally that the cells are connected in series to form 6 large strings, and then the 6 strings of cells are connected in series. Because it is a series circuit, when a battery in the entire circuit is damaged or blocked, it will affect the power generation efficiency of the entire module. Therefore, while these 6 strings of cells are connected in series, there is a diode connected in parallel for every two strings of cells. When a cell in the two strings is damaged or blocked, the diode will be turned on, bypassing the two strings, and the other 4 strings will be connected in parallel. The battery pack still works fine. The generating power of the components is only reduced by 1 / 3. [0003] In order to ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned diodes are directly exposed to sunlight, and the diodes have been exposed to ultraviolet rays, overheating, etc. under long-term sunlight.

Moreover, the above-mentioned diodes need to be manually welded in the process of being integrated into the assembly, and the operation is difficult

The risk of electrostatic breakdown is high, and due to the installation of diodes, the distance between the cells increases and the internal resistance increases, which reduces the power generation efficiency of the module

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