A device and method for quickly testing solar cell potential-induced decay

A potential-induced attenuation and solar cell technology, which is applied in photovoltaic power generation, electrical components, photovoltaic system monitoring, etc., can solve the problems of long test period and inflexible test methods, and achieve short test period, shortened test period and accelerated aging speed effect
CN106656041BActive Publication Date: 2018-05-15TRINA SOLAR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TRINA SOLAR CO LTD
Publication Date
2018-05-15

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Abstract

The invention discloses a device for rapidly testing potential induced degradation of a solar cell. The device comprises an environmental box, a metal test bench, an external power supply and a plurality of metal probes, wherein an adjustment device for adjusting temperature and humidity is arranged in the environmental box, the metal test bench is arranged in the environmental box, the temperature of a bench surface of the metal test bench can be adjusted, the external power supply generates a voltage of 200V to 1,000V, and the metal probes are connected with the external power supply by wires and are provided with tip end parts. The invention also discloses a method for rapidly testing the potential induced degradation of the solar cell. The device has the advantages of short test period, reliable test result, high sensitivity and the like; and the method is a battery terminal-based direct method for non-destructive observation on the potential induced degradation of the battery.
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Description

technical field

[0001] The invention relates to a testing device for potential-induced attenuation of a solar cell, in particular to a device and method for quickly testing the potential-induced attenuation of a solar cell, belonging to the technical field of solar cell testing. Background technique

[0002] Potential Induced Degradation (PID, potential Induced Degradation) is one of the characteristics of photovoltaic cells. It refers to the phenomenon that the output of solar cells will drop when high voltage flows through the solar cells in a high-temperature and humid environment.

[0003] Currently, potential-induced degradation is rapidly becoming one of the serious degradations in the field of photovoltaics. Modules are prone to serious power attenuation due to sodium ion migration or surface polarization in a high-temperature and high-humidity environment. The existing methods for testing the potential induced decay of solar cells mainly adopt the international IEC ...

Claims

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