Test for yourself If you don't have any special equipment, you can purchase one or more 500W metal halide lamps, and other thermal light sources are also available. When the solar panel area is large, multiple solar panels can be arranged according to the lighting range of the lamp, and then equipped with a voltage regulator. The distance is approximately 15 to 20 cm. Use a photometer to measure the data: 40,000 LUX. , which is currently recognized as the international standard for testing methods. Replace the battery board to test.
The most direct way is to test directly under the sun. However, there are several solar panels from different manufacturers to compare, so you can find out which one is best.
In addition to automatic sorting machines, what other instruments can be used for online cell detectionsolar panels?
The quality of solar panels is mainly judged from the following aspects:
1. Look at the surface and carefully check the surface layer of the tempered glass. Generally, in order to increase the production speed, small manufacturers often inadvertently pour silica gel on the tempered glass, which may not be the case. be obvious at first. But if it is not clear, it will affect the normal working efficiency of the battery panel.
2. Watch the battery sheets when splicing them, use broken sheets. This method will cause the dragon chair to become disconnected during use, affecting overall efficiency.
3. Look at the back to see if there are any bubbles or other phenomena on the back.
4. Check whether the silicone on all four sides of the silicone is uniform and whether it penetrates.
5. Check if the frame appears to be made evenly and tightly and if thethe degree of tightness is uneven.
6. Check the solder for leaks. Check if the drum sheets are even.
7. Check if the junction box is waterproof and can rotate freely.
Solar panel detection
PL photoluminescence detection equipment is a device that can truly realize online detection.
Photoluminescence is a phenomenon of luminescence of semiconductors. When light is irradiated on the surface of a material, its electrons absorb photons and jump to a high energy level. Due to the instability of electrons at high energy levels, they. will fall back to a low energy level. At the same time, the energy accompanied by the energy level difference is emitted as optical radiation. This process is photoluminescence, or PL.
It is widely used, mainly in the detection of electronic structure,energy band, quality identification and other fields. It is also a key test equipment in photovoltaic cell detection.
Under the background of the current foreign crisis and domestic surplus, the domestic photovoltaic industry will inevitably move towards integration and elimination. Reducing costs and improving quality are the basis for a business to remain invincible. Therefore, PL test equipment is very critical.
He who seizes the opportunity will win. It is said that all major domestic photovoltaic companies are preparing to install PL photoluminescence testing equipment.
PL Equipment:
1 You know about home equipment, which is basically well promoted, and I've never heard of anyone using home equipment. Additionally, it cannot be analyzed online, which is a fatality.
2. Am equipmentEricans are available online and offline, with relatively comprehensive test results and unique dual-band analysis. What a shameThe price prohibits many manufacturers.
3. South Korean equipment has been supplied to the Chinese market since last year. They have a beautiful design and can be used for online analytics. The price is cheaper than USA, but the production. the capacity is not too high and it is difficult to detect bare chips.
4. A German model also appears in the Chinese market and can detect online and offline, but unfortunately it only applies to battery cells. The price is also higher.
5. Everyone knows Hungarian equipment. Hungary has become a major supplier of equipment for global photovoltaic testing, especially upstream testing, and is particularly recognized at home and abroad.
EquipmentHungarian currently has two brands: Semilab, the price is really good, but the price will not be reduced, so if you want to buy it, you will not buy it; >The PHYS brand is also very well known and very popular in infrared detection. In terms of performance, it is second to none. Based on their unique technology, they recently developed a PL photoluminescence detection system. uses the most advanced IR camera to detect more waveband information than CCD. At the same time, it uses online photography, that is, the step-by-step method, to avoid distortion, the information is real, and the analysis software is powerful. The price is also easily acceptable in China!
6. In Australia, BT's results are not as good as in the United States, but prices are not low, mainly because they are early to the Chinese market.
7. There is a company in Taiwan with equiequipment similar to that of South Korea.
To summarize, PHY PL is profitable.
There is a special tester for measuring power. Temperature 25℃, AM1.5, light intensity 1000W/㎡; conversion rate = power/(light intensity*area)=laboratory power/(battery panel area*1000)
If you measure it yourself, the battery panel Count the voltage of the number total cells, the voltage of each cell is 0.5V. Measure the voltage and current under the sun. Check if the voltage matches the number of batteries * 0.5. If the voltage is much lower, there is a problem with the quality of the battery board. Current voltage * is the operating power of the battery panel.