Testing method of a solar cell panel, and testing apparatus thereof

摘要

A testing method of a solar cell panel of the present invention, includes steps of: (a) providing an ambient light with steady illumination to the surface of a solar cell panel to introduce a steady signal to its electrical output; (b) providing a modulation light to a given area of the solar cell panel to introduce a modulated signal to its electrical output corresponding to the given area; and (c) analyzing electrical output of the solar cell panel to obtain electrical properties corresponding to the given area. The testing method can test the solar cell panel efficiently, detect and locate defects accurately so that the defects can be corrected and feed back to improve manufacturing process.

主权项

1. A testing method of a solar cell panel including a plurality of given areas, the method comprising:
(a) providing an ambient light with steady illumination to a whole surface of a solar cell panel to introduce a steady signal to an electrical output of the solar cell panel; (b) providing a modulation light to each one of the plurality of given areas of the solar cell panel to introduce a modulated signal to the electrical output of the respective given area of the solar cell panel, the modulation light being provided with the ambient light synchronously; and (c) analyzing electrical output of the solar cell panel to obtain electrical properties for each one of the plurality of given areas, wherein step (c) further comprises: (c1) determining the operation condition of the solar cell panel to obtain maximum rating power from the solar cell panel corresponding to the ambient light; (c2) demodulating the modulated signal; (c3) computing power conversion efficiency of the given area illuminated by the modulation light; and (c4) mapping a profile of the power conversion efficiency.