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Titel:
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Thermography: quality control for module manufacturing
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Auteur(s):
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Gepubliceerd door:
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Publicatie datum:
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ECN
Energie in de Gebouwde Omgeving en Netten
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1-5-2003
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ECN publicatienummer:
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Publicatie type:
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ECN-RX--03-026
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Conferentiebijdrage
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Aantal pagina's:
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Volledige tekst:
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2
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Download PDF
(184kB)
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Gepresenteerd op: 3rd World Conference on Photovoltaic Energy Conversion, Osaka, Japan, 11-18 mei 2003.
Samenvatting:
It is beneficial to check the quality of the strings ofcells prior to the final lamination process to avoid the
rejection of a complete laminate in case of a defective
string. Defective cells or defective connections can be
detected in a fairly simple way prior to the lamination
process by thermography. Within a few seconds after
applying a reverse current in the order of the short circuit
current of the cells a clear IR-image can be observed. The
image may be obscured by local variations in the emission
coefficient for IR radiation. This complication however is
successfully tackled by covering the string with a simple
plastic foil. The foil takes over the temperature
distribution of the underlying string and emits the
radiation with a uniform emission coefficient.
Terug naar overzicht.