Solar power is energy from the sun that is converted into thermal or electrical energy. Solar power is a kind of inexhaustible and environmentally friendly new energy resource. Solar street light is one of the applications of solar power.

Solar street light has the advantages of stability, long service life, simple installation, safety, great performance and energy conservation. This kind of light can be widely installed in urban roads, living districts, factories, tourist attractions and parking lots.

The solar street light consists of LED light source, solar panels, storage battery, solar charge controller, lamp-post and accessory wire rods. Generally, the solar module is made of monocrystalline silicon or polycrystalline silicon. The storage battery is placed underground or in the specialized battery incubator. The battery is generally valve-regulated lead-acid, gel, iron-aluminum, or lithium. The controller is placed in the lamp post. It has the function of overcharge protection, over-discharge protection, trickle charge protection, reverse-connection protection, Undervoltage protection, light control and time control. In a word, the major function of solar charge controllers is protecting the storage battery.

Operating Principle

In the daytime, solar panels absorb the sunlight and convert it into electricity under the control of solar charge controller. Solar modules will charge the storage battery. At night, the storage battery supply electricity to LED light source. DC controller can ensure that the storage battery will be protected from damage due to overcharge or over-discharge.

Advantages

1、Simple installation

The installation of solar street light is simple and convenient without complicated new wiring. It only needs a concrete base and a battery pit. The installation doesn’t need a lot of labor forces, materials and financial resources.

2、Energy-saving and environmentally-friendly

The solar street light converts the sunlight into electricity without electricity consumption. It produces no pollution and no radiation, which conforms to the present environmental protection concept.

3、Safe and durable

The traditional street light may have hidden safety hazards due to construction quality, material aging and power supply disorder; while the solar street light does not utilize alternating current so it will not have hidden safety hazards. Nowadays, most solar modules in the market have had a stable performance for at least ten years due to the mature manufacturing technology. They can generate electricity for twenty-five years or even longer.

4、High technology and low maintenance costs

Regulated by solar charge controller, the solar street light can adjust the light intensity according to the natural brightness and people’s demand. In remote regions, the maintenance cost for traditional street lights is high. However, the solar street light only needs cyclical inspection, thus the maintenance cost is relatively low.