The designed service life of solar photovoltaic modules is about 20-30 years, and they will withstand various harsh weather tests during long-term use. Various properties such as the ability of photovoltaic modules exposed to the outside for a long time to withstand the effects of high temperature and humidity and subsequent low temperatures, as well as the ability to withstand long-term moisture penetration, need to be evaluated.

Millennial Solar has a series of sophisticated testing equipment for Damp Heat and Humidity Freeze Test of solar photovoltaic modules, such as Damp Heat Test Chamber, Humidity Freeze Test Chamber and Thermal Cycle Test Chamber. In this issue of Millennial Solar, we will introduce you to photovoltaic module damp heat and humidity freeze test.

Solar photovoltaic module damp heat and humidity freeze test

Long-term exposure to the outside requires solar photovoltaic modules to undergo damp heat test, humidity freeze test, thermal cycle test, etc. to confirm that the photovoltaic modules can withstand random sub-zero temperature effects after high temperature and humidity, as well as attenuation and aging caused by repeated changes in temperature, it is also necessary to determine the ability of solar cells to resist long-term moisture penetration.

The experiment is to place the photovoltaic modules in a climate chamber with automatic temperature control and internal air circulation, so that the photovoltaic modules can reciprocate under a certain temperature and humidity and maintain a certain recovery time. Monitor short circuits and open circuits, appearance defects, electrical performance attenuation, insulation resistance and other phenomena that may occur during the experiment to determine the ability of photovoltaic modules to withstand high temperature and high humidity, low temperature and low humidity.

Environmentally induced attenuation and aging solutions

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Thermal Cycle Test Chamber: Early identification of any manufacturing defects by cycling the PV module through the material or device at two set temperatures and inducing failure modes through thermal fatigue.

Damp Heat Test Chamber: used to determine the component's ability to withstand long-term moisture penetration and verify its stability and durability during long-term use.

Humidity Freeze Test Chamber: Determine the component's ability to withstand the effects of high temperature and humidity, as well as subzero temperatures, to ensure that it can adapt to various harsh environments in practical applications.

The large-scale application and development of photovoltaic technology has put forward technical requirements for long-term and reliable performance of photovoltaic modules. Different climate conditions and usage conditions may cause significant changes in the performance of photovoltaic modules. In order to evaluate the performance of photovoltaic modules more scientifically and comprehensively, Performance and environmental reliability testing in different usage environments are essential. The environmental test chamber developed by Millennial Solar can help users test the quality and reliability of photovoltaic modules and improve production efficiency.