Multi-stage grid line solar cell

Abstract

The present invention discloses a multi-stage grid line solar cell, which comprises a solar cell. The front surface of the solar cell is provided with a first-level electrode and a second-level electrode, wherein the first-level electrode and the second-level electrode are vertically arranged in the staggered manner. The first-level electrode or the second-level electrode is provided with a vertical third-level electrode. The width of the third-level electrode is smaller than the width of the first-level electrode and the width of the second-level electrode. The density of the third-level electrode is larger than the density of the first-level electrode and the density of the second-level electrode. According to the multi-stage grid line solar cell, on the basis of two-level electrodes, a thinner third-level electrode is additionally arranged, so that the electrode coverage density is improved. The collection of a fine current is improved and the fine current is finally converged to figure and busbar electrodes. Therefore, on the condition that the current electrode total area remains substantially constant, the line width, the number of the electrode wire coverage density for each electrode at each of different levels are optimized. The current collection capability is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a multilevel grid wire solar cell. Background technique [0002] At present, the grid wire electrodes on the front of silicon solar cells are in two-level form, that is, Busbar and figure two-level electrodes, but such two-level electrodes have certain defects in the collection of fine currents due to the low coverage density of the electrodes, so it cannot be better. Improve the ability to collect current. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a multi-level grid-wire solar battery sheet capable of increasing the current collection capability. [0004] The technical solution adopted by the present invention in order to solve the technical problem is: a multi-level grid line solar battery sheet, including a solar battery sheet, and the front side of the solar battery sheet is provided with first-l...

AI Technical Summary

Problems solved by technology

[0002] At present, the grid wire electrodes on the front of silicon solar cells are in two-level form, that is, Busbar and figure two-level electrodes, but such two-level electrodes have certain defects in the collection of fine currents due to the low coverage density of the electrodes, so it cannot be better. The improved ability to collect current

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