The photovoltaic module test box is a testing equipment used to simulate harsh environmental conditions (such as high temperature, high humidity, low temperature alternation, etc.), mainly evaluating the reliability of solar photovoltaic modules in long-term use.
core functionality
Environmental simulation: Perform temperature cycling tests (such as -40 ℃ to+80 ℃), wet freezing tests (temperature difference cycling at 85% humidity), and wet heat tests (85 ℃/85% humidity for 1000 hours).
Performance monitoring: Real time detection of key indicators such as current, voltage, power, and conversion efficiency of components.
Security protection: Built in protection mechanism to prevent component damage during testing.
performance testing
Real time monitoring of electrical parameters such as current, voltage, power, and conversion efficiency of photovoltaic modules to verify their power generation performance.
Evaluate the weather resistance and reliability of components through wet heat tests (such as double 85 test: 85 ℃ temperature+85% humidity), wet freezing tests (such as -40 ℃ to+85 ℃ cycling), etc.
Experimental operation steps
Start the test chamber, heat and humidify according to the set program, and start timing (1000h) after the temperature and humidity reach 85 ℃/85% RH.
During the experiment, regularly observe the status of the components (such as whether there are cracks in the back panel, corrosion of the frame, and fogging of the glass), and record any abnormal situations.
After the experiment is completed, cool down according to the program (rate ≤ 1 ℃/min). After the temperature drops to room temperature, remove the components and conduct electrical performance testing (measure open circuit voltage, short circuit current, and fill factor with an IV tester, and compare with before the experiment. A decay rate of ≤ 5% is considered qualified).
Turn off the power and water supply of the equipment, clean the inner chamber of the test box (wipe with a dust-free cloth to avoid residue of scale).
Application scenarios
Photovoltaic module manufacturing: used for new product development, design verification, and quality control before leaving the factory to ensure that the modules comply with international standards.
Research institutions: Support material research, failure analysis, and other experiments to explore component performance optimization solutions.
Quality inspection agency: provides a standardized testing environment for third-party testing and issues certification reports.
System integrator: Verify the long-term stability of photovoltaic systems in harsh environments and enhance project reliability.