It is well-known that LED solar street lights rely on solar panels to convert sunlight into electrical energy, and the energy conversion efficiency of solar panels plays a crucial role in the normal operation of street lights.
Solar cell hot spots refer to situations where parts of a solar panel are shaded and unable to work under sunlight, causing the shaded areas to heat up significantly more than the unshaded parts, leading to overheating and resulting in dark spots that can be damaged.
Hot spots can lead to damage to the entire battery module, causing losses. Therefore, it is necessary to study the internal causes of hot spots to reduce the likelihood of their formation. The formation of solar cell hot spots is primarily caused by two internal factors related to internal resistance and the dark current magnitude of the solar cells themselves.
The reasons for the decline in module power can be summarized into three aspects:
1. Deterioration of silicon wafer quality, leading to significant early light-induced degradation of the cells.
2. Some component manufacturers have unreasonable manufacturing processes, resulting in issues such as micro-cracks in cells, poor crosslinking in EVA, delamination, and bad welding quality. Such components can also cause output power reduction or component failure in a short period.
3. Some manufacturers have inaccurate power testing of their components.
Output power degradation can be divided into two stages:
1. Early light-induced degradation, which is a significant decrease in the output power of photovoltaic modules occurring within the first few days of use, but then stabilizing. An important reason for this is the boron-oxygen complex.
2. Aging degradation of the module, which refers to the extremely slow power decrease that occurs with long-term use, primarily caused by degradation in the performance of the encapsulation materials.
For more information on solar street light prices, please consult Bitpott’s solar street light manufacturers, which specialize in the research, development, and sale of solar and LED outdoor lighting. With years of production experience and advanced production equipment, they guarantee quality with reasonable prices and configurations.
For inquiries about LED solar street light prices, please click to contact their online customer service or call the service hotline.
