Solar cell structure, method for manufacturing same, and solar cell module

Abstract

The invention discloses a solar cell structure, a method for manufacturing the same, and a solar cell module. The solar cell structure comprises a substrate, a first electrode and a second electrode. The first electrode is arranged on the first surface of the substrate, and comprises at least one first bus electrode, multiple finger electrodes and multiple first auxiliary electrodes. The first bus electrode intersects with the finger electrodes, and does not intersect with the first auxiliary electrodes. The second electrode is arranged on the second surface of the substrate, and comprises at least one second bus electrode. The second bus electrode comprises multiple electrode parts corresponding to the first auxiliary electrodes. The electrode parts are arranged at intervals, and the orthographic projection of the electrode parts on the first surface overlaps with the first bus electrode. The finger electrodes comprise multiple first finger electrode units intersecting with the orthographic projection of the electrode parts. Each first auxiliary electrode is arranged beside one side of the orthographic projection of the corresponding electrode part, and intersects with the first finger electrode units.

Description

technical field [0001] The present invention relates to a photoelectric conversion device, and in particular to a solar cell structure and a manufacturing method thereof. Background technique [0002] After the solar cell module is manufactured, it is usually required to conduct a reliability test to ensure that the solar cell module produced can pass the international certification and the specification required by the customer. Generally speaking, the reliability tests of solar cell modules mainly include visual inspection, insulation test, low-light performance test, outdoor exposure test, hot spot durability test, ultraviolet test, thermal cycling test, humidity Humidity freeze test, damp heat test, lead terminal test, wet leakage current test, mechanical load test, hail test and light attenuation test, etc. [0003] However, after the thermal cycle test, the fill factor of the solar cell module often decreases, resulting in a decrease in the maximum output power. Plea...

AI Technical Summary

Problems solved by technology

Due to the damage of the finger electrodes 106, these finger electrodes 106 cannot be effectively connected with the bus electrodes 104, thus causing the current collected by th

Images