Solar panels (also called solar cell modules) are an assembly of several solar cells. They are the core part of the solar power generation system and the most important part of the solar power generation system.
Principle of energy production
Sunlight shines on the p-n junction of the semiconductor to form new hole-electron pairs. Under the action of the electric field of the p-n junction, the holes flow from the p region towards. the region n. Electrons flow from region n to region p and a current forms once the circuit is connected. This is how photovoltaic solar cells work.
Solar power generation methods There are two solar power generation methods: one is the light-heat-electricity conversion method and the other is the light-direct conversion method. electricity.
(1) The method of conlight-heat-electricity version uses thermal energy generated by solar radiation to produce electricity. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid and then drives it away. a steam turbine to produce electricity. The first process is a process of converting light into heat; the second process is a process of converting heat into electricity.
(2) The direct light-to-electricity conversion method uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for converting light into electricity is the solar cell.
A solar cell is a device that directly converts solar energy into electrical energy through the photovoltaic effect. When the sun shines on the photodiode, the photodiode converts solar energy into electricity. . The energyThe light is transformed into electrical energy, creating an electric current. When many batteries are connected in series or parallel, a solar cell array with relatively large output power can be formed.
Detailed information
Lifespan
The lifespan of solar panels is determined by the quality of the cells, glass tempered, EVA, TPT, etc. Determined by the material, manufacturers who generally use better materials can produce panels with a lifespan of up to 25 years. However, with the impact of the environment, solar panel materials will age over time. Under normal circumstances, the power will decrease by 30% after 20 years of use, and the power will decrease by 70% after 25 years of use.
Inspection and maintenance
1. Check whether the battery board is damaged, find out in time and replace- her on time.
2. Check whether the battery board connection wire and ground wire are in good contact and whether they fall off.
3. Check for heat at the mixer box junction.
4. Check if the battery panel bracket is loose or broken.
5. Check and clear weeds around the battery panels that are blocking them.
6. Check if there is a cover on the surface of the battery panel.
7. Check the surface of the battery panel for bird droppings and clean them if necessary.
8. Evaluate the cleanliness of the battery panels.
9. In windy weather, key inspections of panels and battery holders should be carried out.
10. On heavy snow days, the battery panels should be cleaned in time to avoid the accumulation of snow and ice on the surface of the battery panels.
11. All waterproofing must be checkedn case of heavy rain. Whether the seal is good and there are water leaks.
12. Check to see if animals have entered the power plant and damaged the panels.
13. In the event of hail, key inspections should be carried out on the surface of the battery panels.
14. Detect the battery panel temperature and compare it with the ambient temperature for analysis.
15. Detected issues should be addressed, analyzed and summarized in a timely manner.
16. Keep detailed records of each inspection to facilitate future analysis.
17. Carry out analyses, summary reports and archive them.
Baidu Encyclopedia - Solar Panels
Baidu Encyclopedia - Solar Panels
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