About Solar Street Light

What is solar street light?

Solar street lights are raised light sources which are powered by solar panels generally mounted on the lighting structure or integrated into the pole itself, consisting of a Solar Panel, Lighting Fixture, Rechargeable Battery, and solar light pole. It is an electric lamp that is converted into electric energy by solar panels. 

The solar panels charge a rechargeable battery,In the daytime, even on cloudy days, the solar generator (solar panel) can collect and store solar energy, which powers a fluorescent or LED lamp during the night.

Most solar lights turn on and turn off automatically by sensing outdoor light using solar panel voltage. Solar streetlights are designed to work throughout the night. Many can stay lit for more than one night if the sun is not in the sky for an extended period of time. Older models included lamps that were not fluorescent or LED. Solar lights installed in windy regions are generally equipped with flat panels to better cope with the winds.

Modern designs use wireless technology and fuzzy control theory for battery management. The street lights using this technology can operate as a network with each light having the capability of performing the turning on and off of the network.

Solar street lights and other solar power light products have grown in popularity over the years. Unlike traditional sources of light, Solar street lights are outdoor light devices that are activated through photovoltaic or PV panels. They have a rechargeable battery that can be loaded with electrical power when detecting light from a source such as the Sun. solar lights don’t harm the environment. 

It is a more environment-friendly lighting choice. This is the reason why a lot of people are switching to this technology for their lighting needs. Moreover, solar lights do not rely on electricity providers; thus, you can save money by avoiding paying high electricity bills.

outdoor solar street lights

What are the consist of solar street light?

Solar Panels:

The solar panel is one of the most important parts of a solar panel light , as the solar panel can convert solar energy into electricity that the lamps can use. Solar panel is a device that directly or indirectly converts solar radiation energy into electrical energy through photoelectric effect or photochemical effect by absorbing sunlight. 

The main material of most solar panels is “silicon”. Compared with ordinary batteries and recyclable rechargeable batteries, solar cells are more energy-saving and environment-friendly green products.

The structure of the solar panel includes:

1) Toughened glass:Its role is to protect the main body of the power generation (such as the battery chip).

2) EVA:It is used to bond and fix tempered glass and power generation main body (such as battery chip).

3) Battery chip: It is mainly used to generate electricity. The mainstream in the main power generation market are crystalline silicon solar cells and thin film solar cells.

4) Backboard: function: sealing, insulating, waterproof (generally TPT, TPE and other materials must be aging resistant).

5) Aluminum alloy: protect the laminated parts and play a certain role in sealing and supporting.

6) Junction box: protect the whole power generation system and play the role of current transfer station.

7) Silica gel: sealing function, used to seal the junction between components and aluminum alloy frame, components and junction box.

There are two types of solar panels commonly used in solar power light: monocrystalline and polycrystalline. The conversion rate of mono-crystalline solar panels is much higher than their poly-crystalline counterparts. Solar panels also vary in wattage systems.

Monocrystalline silicon solar cells, which are made of high-purity monocrystalline silicon rods, are the fastest developing solar cells. Its structure and production process have been finalized, and the products have been widely used in space and ground. The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, and the highest is 24%. 

This is the highest photoelectric conversion efficiency of all kinds of solar cells, but the production cost is so high that it cannot be widely used. Monocrystalline silicon is generally packaged with tempered glass and waterproof resin, so it is sturdy and durable, with a service life of up to 25 years.The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells. 

Polycrystalline silicon solar cells have the advantages of high conversion efficiency and long life of monocrystalline silicon cells, as well as the relatively simple material preparation process of amorphous silicon thin film cells. Their conversion efficiency is generally about 17-18%, slightly lower than that of monocrystalline silicon solar cells. 

There is no obvious efficiency decline problem, and they may be prepared on cheap substrate materials, Its cost is much lower than that of monocrystalline silicon battery, while its efficiency is higher than that of amorphous silicon thin film battery. In terms of production cost, it is cheaper than monocrystalline silicon solar cells. The materials are easy to manufacture, saving power consumption, and the total production cost is low, so it has been developed in a large number. 

In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of performance price ratio, monocrystalline silicon solar cells are slightly better.Youlumi solar panel light use monocrystalline solar panel:40W is 18.2V/45W High-efficiency monocrystalline silicon;60W is 18.2V/60W High-efficiency monocrystalline silicon;80W is 18.2V/80W High-efficiency monocrystalline silicon;100W is 18.2V/90W High-efficiency monocrystalline silicon.

100W Solar Panel Street Light

Lighting Fixture:

Light emitting diode lamps, also known as LED lamps, refer to the devices that can transmit light, distribute and change the light distribution of LED light sources, including all parts and components required for fixing and protecting LED light sources except LED light sources, as well as the circuit accessories necessary for connecting with the power supply.

LEDs are usually used as the primary lighting source of modern solar led lights, as the LED will provide much higher luminosity with lower energy consumption. The energy consumption of an LED fixture is at least 50% lower than the HPS fixture counterpart which is widely used as the lighting source in traditional street lights. A lack of warm-up time in LEDs also allows for use of motion detectors for additional efficiency gains.

Rechargeable Battery:

Batteries will store the electricity generated by the solar panel during the day and provide energy to the fixture during the night. The life cycle of the battery is very important to the lifetime of the light and the capacity of the battery will affect the backup days of the lights. There are two types of batteries commonly used in solar outdoor lighting – gel cell deep cycle batteries as well as lead acid batteries. 

Lithium-ion batteries are also popular due to their compact size. Youlumi solar led lights use Li-ion battery, 40W Solar Street Light use 12.8V,24AH,307.2WH lithium iron phosphate battery;60W Solar Street Light use 12.8V,30AH ,384WH lithium iron phosphate battery;80W Solar Street Light use 12.8V,42AH ,537.6WH lithium iron phosphate battery;100W Solar Street Light use 12.8V,54AH ,691.2WH lithium iron phosphate battery.Charging Time is 6-7H(with enough strong shine by sun);Performance Lighting Time is 12H,4-6 rainy days.

solar street lights

Solar Light Pole:

Strong poles are necessary to all street lights, especially to solar outdoor lighting as there are often components mounted on the top of the pole: fixtures, panels and sometimes batteries. However, in some newer designs, the PV panels and all electronics are integrated in the pole itself. Wind resistance is also a factor.

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