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Method for predetermining thermal degradation service life of composite materials for photovoltaic assembly

A technology for composite materials and photovoltaic modules, which is applied in thermal analysis of materials, preparation of test samples, analysis of materials, etc., can solve problems such as material failure, and achieve the effects of good stability, small system error and accurate measurement

Inactive Publication Date: 2012-01-25
TRINASOLAR CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Traditional testing methods generally perform accelerated life tests on materials in an oven, and it takes dozens of days or even months to make the material fail

Method used

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  • Method for predetermining thermal degradation service life of composite materials for photovoltaic assembly
  • Method for predetermining thermal degradation service life of composite materials for photovoltaic assembly
  • Method for predetermining thermal degradation service life of composite materials for photovoltaic assembly

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Embodiment Construction

[0035] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0036] Take the backplane as an example to predict its life:

[0037] Place the backplane in a drying dish for a period of time, and after taking it out, cut 4 disc samples with scissors, weighing about 10mg;

[0038] Burn the sample plate (platinum plate) on the flame of the alcohol lamp for 2 minutes to remove the residual impurities on the sample plate; after the sample plate weight is reset to zero, put the test sample (10mg) on ​​the sample plate and inject the sample;

[0039] Turn off the high-temperature furnace, wait for 3 minutes, and start the experiment after filling the entire high-temperature furnace with an i...

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Abstract

The invention relates to a method for predetermining the thermal degradation service life of composite materials for a photovoltaic assembly. One group of thermogravimetric curve is obtained at different warming rates. Multiple decline values are respectively obtained at different warming rates. The decline values are converted into a 1 / T spectrum of the warming rates, and one group of lines is obtained. All groups of spectrum data are fit, and close slopes are obtained to estimate activating energy E. A service-1 / T spectrum is established based on a service life formula, and the service life of a 1 / T point is deducted according to the spectrum fitting curve. The test method is simple and quick and has high reliability. The method can be used for evaluating the service life of the composite materials for the photovoltaic assembly, and can also be used for comparing the thermostability of materials of different factories or different batches.

Description

technical field [0001] The invention relates to a method for measuring the thermal degradation life of a composite material of a photovoltaic module, in particular to a method for predicting the thermal degradation life of a composite material for a photovoltaic module using a thermogravimetric method. Background technique [0002] At present, there are many reports on predicting the life of materials, but there are few reports on the life measurement of composite materials used in photovoltaic modules. Solar photovoltaic modules need to be used for 25 years in various complex environments. The service life of photovoltaic modules is not only the most concerned by solar power generation investors, but also the concern of the majority of photovoltaic module manufacturers. Traditional testing methods generally conduct accelerated life tests on materials in an oven, and it takes dozens of days or even months to make the material fail. Therefore, for the rapidly developing phot...

Claims

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Application Information

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IPC IPC(8): G01N25/00G01N1/28
Inventor 汪建玲王昭云沈灿军
Owner TRINASOLAR CO LTD