Method for detecting solar cell leakage current by infrared thermal imager
An infrared thermal imager and solar cell technology, applied in the field of solar photovoltaics, can solve problems such as incomplete removal of edge junctions, cracks, too small parallel resistance of solar cells, etc., and achieve the effect of improving solar cell performance and simple structural layout
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[0020] The specific steps of the method for detecting the leakage current of a solar cell using an infrared thermal imager provided in an embodiment of the present invention are as follows:
[0021] (1) Place the completed solar cell in a dark room, the back of the solar cell is in close contact with the stage with good heat dissipation, the positive and negative electrodes of the solar cell are connected to the regulated power supply, and the infrared thermal imager is aligned Light-receiving surface of solar cell;
[0022] (2) Use a regulated power supply to apply a positive or negative bias to the solar cell, and then observe the infrared thermal image;
[0023] (3) Judging that the high-temperature area shown in the infrared thermal image is the leakage area;
[0024] (4) According to the location of the leakage area and the form of expression under positive and negative bias voltages, the cause of the leakage is speculated.
[0025] As an extension of the method of the ...
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