Photovoltaic module testing is an essential step before the installation and commissioning of photovoltaic power generation systems. Only comprehensive testing of photovoltaic modules can ensure the normal operation of the photovoltaic system and the long-term benefits of the power station Below, the editor will introduce the testing items of photovoltaic modules to everyone 1. Appearance inspection: The appearance quality of the solar panel includes whether there are bubbles, scratches, dirt, etc. on the surface, as well as whether there are obvious shadows or uneven colors For monocrystalline silicon or polycrystalline silicon solar cells, the fewer surface defects, the better; For thin film solar cells, defects should be avoided in large areas as much as possible 2. Electrical performance inspection mainly includes parameter testing such as open circuit voltage, short circuit current, and reverse leakage current; Power measurement (output power), efficiency and temperature characteristics testing; Light attenuation test and other parameter testing; Attenuation curve analysis (decay rate over time)
3. Environmental stress screening mainly involves screening and classifying solar panels based on different environmental conditions, in order to select high-quality products suitable for that specific environment
4. Mechanical strength testing includes bending test, impact strength test
5. Electrical insulation performance mainly includes: withstand voltage test
6 Thermal performance includes: high-temperature stability
7, chemical stability
8, other physical indicators such as thickness deviation
9, reliability evaluation includes: life prediction
10, safety evaluation mainly includes: lightning protection design
11, EMC electromagnetic compatibility certification
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China