With the increasing frequency of human activities, the demand for Earth's resources is also growing, leading to a global energy crisis. In order to alleviate this crisis, people have discovered that solar energy, as an "inexhaustible" new energy source, can replace high polluting traditional energy sources such as oil and coal. With the development of technology, solar photovoltaic technology is also widely used in people's production and life.
Solar street lights are one of the most mature products in terms of application. Solar street lights are not only safe and environmentally friendly, but also have more advantages in applicability than traditional street lights. So, let's briefly introduce the basic working principle of solar street lights below:
1. Solar panels
The solar panel is the core part of solar street lights and also a part of the scientific and technological content of solar street lights. It can convert the light energy emitted by the sun into electrical energy, which is then stored in batteries for use by solar street lights at night. Currently, the most commonly used type on the market is crystalline silicon solar cells. Because of its mature manufacturing process, low price, and relatively stable performance of solar cells.
2. Battery
Due to the variability of sunlight exposure, the electrical energy generated by solar panels is also extremely unstable. So it is necessary to configure a battery to store the converted solar energy, and then use the battery to power the solar street lights during use. In order to avoid waste and damage to the service life of the battery, the voltage of the solar panel must exceed 20-30% of the tracking voltage of the battery, and the capacity of the battery must also be about 6 times higher than the power consumption of the load. This is the only way to ensure the normal use of solar street lights, without causing insufficient battery power due to rainy weather.
3. Light source
Due to the limited capacity of batteries, the light source of solar street lights is generally LED light sources with low power consumption and low power. Moreover, the service life of LED lights is longer than that of ordinary incandescent bulbs, and their brightness is about 30% higher than other ordinary light sources. With the increasing maturity of LED light source technology, the performance of LEDs will also be further improved, making them the preferred light source for solar street lights.
4. Lamp post
The most widely used area for solar street lights is rural roads. In order to ensure the stability and durability of solar street lights, the lamp posts are generally treated with hot-dip galvanizing to prevent acid and corrosion. The appearance also varies according to the ethnic characteristics of different regions. The height can be freely adjusted according to the width of the road and lighting requirements.