High-efficiency concentrating solar battery piece

Abstract

The invention relates to a high-efficiency concentrating solar battery piece and belongs to the technical field of solar power generation. The high-efficiency concentrating solar battery piece comprises a plurality of negative electrode section layers, a concentrating solar battery base material layer, a positive electrode layer and an active area part, wherein the positive electrode layer is arranged on one surface of the concentrating solar battery base material layer, the negative electrode section layers are arranged on the other surface of the concentrating solar battery base material layer, and the part except a negative electrode is the active area part. According to the battery piece, a large current can be smoothly led out through the positive electrode layer and the negative electrode section layers without damaging the battery piece under the geographical conditions that the concentrating multiple is larger than 1000 and light is very strong; in the machining process, the probability of damage to the battery piece is decreased, and therefore the production yield is increased. Meanwhile, due to the shape and the design of the I-shaped negative electrode section layers of a battery chip, the light receiving area is effectively enlarged, and the conversion efficiency of the battery chip can be improved; focal spots concentrated from a Fresnel lens can be completely concentrated in the effective area part of the concentrating solar battery piece in an overlapped mode in a certain period of time. A motor of a solar tracker works one time in a set period of time, so that power supply power provided for the motor is greatly reduced, and accordingly more energy is saved.

Description

technical field [0001] The invention relates to a photovoltaic power generation component, in particular to a high-efficiency concentrating solar battery sheet, which belongs to the technical field of solar power generation. Background technique [0002] Generally, the main benefit sought by high-concentration photovoltaic photoelectric conversion receivers is to obtain high-density solar radiation concentrated from Fresnel lenses on the effective area of ​​concentrating solar cells. The higher the magnification of the lens, the higher the density of solar radiation, the fewer concentrating solar cells used on the same area, and the lower the power generation cost per unit area. [0003] At present, the focal spot gathered from the Fresnel lens is usually square, and the shape and size of the focal spot are usually consistent with the shape and size of the concentrating solar cell, so that the focal spot gathered by the Fresnel lens is completely converged onto concentratin...

AI Technical Summary

Problems solved by technology

However, in practical applications, the sun is moving at any time, which will cause the focal spot that converges from the Fresnel lens after a period of time will not completely coincide with the effective area of ​​the concentrating solar cell, resulting in a decrease in conversion efficiency. At the same time, if the concentrating solar cells move with the sun all the time, it will inevitably make the tracker move with the sun all the time, so that a lot of electricity will be used to drive the motor of the tracker to work

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