Thermal endurance testing apparatus and methods for photovoltaic modules

A photovoltaic module, heat resistance technology, applied in weather resistance/light resistance/corrosion resistance, measuring devices, strength characteristics, etc., can solve problems such as slow crack growth

Inactive Publication Date: 2012-10-10
PRIMESTAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conversely, for module schemes with insufficient thermal strengthening and sufficiently high defect severity, the applied thermal stress can generate stress intensities greater than the stress corrosion limit, resulting in slower crack growth or thermal fatigue

Method used

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  • Thermal endurance testing apparatus and methods for photovoltaic modules
  • Thermal endurance testing apparatus and methods for photovoltaic modules
  • Thermal endurance testing apparatus and methods for photovoltaic modules

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Embodiment Construction

[0059] Reference will now be made in more detail to the embodiments of the present invention, one or more of which are shown in the accompanying drawings. Each example is provided by way of explaining the present invention, rather than limiting the present invention. In fact, it is clear to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used in conjunction with another embodiment to yield a still further embodiment. Therefore, it is expected that the present invention includes these modifications and variations falling within the scope of the appended claims and their equivalents.

[0060] Some equipment and methods are provided for testing the heat resistance of the glass substrate of the PV module (ie, solar panel) and / or measuring its resistance to thermal fatigue under various e...

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Abstract

Apparatus and methods for testing the thermal endurance of a glass substrate of a photovoltaic module are provided. The apparatus generally includes, in one embodiment, a testing chamber defining an interior space having an interior atmosphere. A refrigeration unit is operably positioned with the testing chamber to control the interior atmosphere's temperature. A mounting system is positioned within the interior space of the testing chamber and configured to hold the photovoltaic module while exposing the glass substrate of the photovoltaic module. An edge cooling system is positioned in relation to the mounting system such that the photovoltaic module held by the mounting system has a first side edge in contact with the edge cooling system. A light system is also positioned within the interior space of the testing chamber to illuminate the glass substrate of the photovoltaic module.

Description

Technical field [0001] The subject matter disclosed herein mainly relates to testing photovoltaic modules. More specifically, this subject relates to methods and equipment for testing the heat resistance of photovoltaic (PV) modules. Background technique [0002] Glass defects can become the starting point of crack propagation under tensile stress. The instantaneous strength of glass depends on the severity of its flaws, its stress history, and the amount of surface compression (thermal strengthening) present in the glass. The method used to promote rapid fracture is considered to be a "highly accelerated life test", which can provide a fracture surface for analysis using fracture analysis techniques so as to be able to measure the tensile stress present at the instant of fracture. This technique provides a measure of the severity of flaws in the glass; however, it does not provide the actual amount of stress applied to the sample at the instant of fracture. Moreover, since th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/60
CPCG01N17/002G01N3/60G01N17/00G01N25/00
Inventor M·W·里德
Owner PRIMESTAR
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