How Do Solar Lights Work

Solar LED lights,These light solar depend on photovoltaic cells, which are responsible for absorbing solar energy during the daytime. These cells convert solar energy into usable electrical energy that can power the lamps during nighttime.

This process repeats daily and can become a sustainable energy source for the streetlight while the sun is up.Solar LED lights are incredibly efficient in the same way standard solar energy is efficient. In addition, solar LED lights are entirely off-grid and incorporate battery technology.

The world is pushing for more renewable energy to avoid the adverse effects of climate change. According to World Energy, just the average global solar radiation per year can produce just as much energy needed as 140 m3 of natural gas, 200 kg of coal, or a barrel of oil. 

This means, under the right optimisation process, solar energy can indeed replace modern energy sources we have today.The use of solar photovoltaic power generation is an irreversible trend of energy utilization. China has become the second largest electricity consumption market in the world after the United States, and its demand growth rate is the highest in the world. 

However, due to the shortage of petroleum energy and the urgency of coal resources, the existing power generation methods are far from meeting the demand for electricity consumption. The promotion of solar power generation is quite urgent, and the market potential is huge. Aiming at the market and accelerating development, the light solar industry is bound to be promising.

led street light

Working principle:

The solar power generation system is composed of solar battery pack, solar controller and storage battery (pack). If the output power supply is AC 220V or 110V, an inverter is also required. The functions of each part are:

A-Solar panel:Solar panel is the core part of the solar power generation system, and also the most valuable part of the solar power generation system. Its function is to convert the solar radiation capacity into electric energy, or send it to the storage battery for storage, or promote the load work. The quality and cost of solar panels will directly determine the quality and cost of the entire system.

B-Solar controller: the function of the solar controller is to control the working state of the whole system, and to protect the battery from overcharge and over discharge. In places with large temperature difference, the qualified controller shall also have the function of temperature compensation. Other additional functions such as light control switch and time control switch shall be optional for the controller.

C-Battery: generally lead acid battery. In small and micro systems, nickel hydrogen battery, nickel cadmium battery or lithium battery can also be used. Its function is to store the electric energy generated by the solar panel when there is light and release it when needed.

In the solar power generation system, the most complex component of technology should be solar cells. It can be said that the solar cell is the core of the solar power generation system, and its development and production directly affect the popularization and development of solar power generation.The main principle of the solar cell is to place the thinner N-type semiconductor on the thicker P-type semiconductor by using semiconductor materials. 

When photons hit the surface of the device, the junction surface of the P-type and N-type semiconductor has electron diffusion to generate current, which can be led out by using the metal conductors at the upper and lower ends.The types of solar cells can be divided into: 

1. silicon solar cells; 

2. Batteries made of inorganic salts such as gallium arsenide III-V compound, cadmium sulfide, copper, indium and selenium; 

3. Solar cells made of functional polymer materials; 

4. Nanocrystalline solar cells, etc. Silicon is the most ideal solar cell material, which is the main reason why solar cells are mainly made of silicon. 

Among the above batteries, monocrystalline silicon solar cells have the highest conversion efficiency and the most mature technology, with the photoelectric conversion efficiency up to 23.3%. In the process of fabrication, surface texturing, passivation of emission region, zoning doping and other technologies are generally used. 

However, due to the influence of the price of monocrystalline silicon materials and the corresponding cumbersome processes, the cost of monocrystalline silicon remains high. It is very difficult to significantly reduce the cost, and it is impossible to achieve the large-scale popularization of solar power generation.

D-Inverter: 220VAC, 110VAC AC power supply is required in many occasions. The direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide power to 220VAC electrical appliances, it is necessary to convert the DC power generated by the solar power generation system into AC power, so DC-AC inverter is required. In some cases, when multiple voltage loads are required, DC-DC inverters are also used, such as converting 24VDC electrical energy into 5VDC electrical energy (note that voltage reduction is not simple).

Installation :

Integrated street solar light only need to install the solar power light to the solar light pole.Keep the solar panel towards the sun to ensure that it can be charged well, and in this way solar panel can charge built-in Li-ion battery effectively.

First,Use the supplied screws to fix the bracket in the solar power light.Then Use the supplied screws to fix the solar power light on the solar light pole.Turn on the solar power light: Press the switch button,the PIR sensor indicator flashes,about 15s.Remove the remote control battery insulation paper and check that the remote control switch is turned on.

Note: When starting the street solar light during the day when the light is strong, the solar panel needs to be completely blocked, and the light will only start when it is in the dark.

Remote control control: Remove the battery insulation paper to control the product. When the remote control turns off the product and needs to start it again , the indicator light flashes, and the product lights up for about 5s.

A: 2H100%+2H70%+8H30%

B:2H [No motion(30%)-Motion (100%)]+2H [No motion (30%)-Motion(70%)]+8H(No motion

(10%)+Motion(30%)Induction lasts for 25 seconds.

C:2H100%+2H70%+8H [No motion (10%)+Motion(30%)+Induction lasts for 25 seconds].

 Working hours: 12H per night ,4-6 rainy days

Charging time: 6-7H(with enough strong shine by sun).

1.Do not install the solar led light against the sun, under the shadow or between two buildings which height above the lamp.Otherwise, it will lead to insufficient absorption of sunlight and insufficient brightness and time;

2.Do not use the solar led light in the environment temperature above 45c or below 0c, otherwise will cause the rapid attenuation of the battery and affect the battery life, even damage;

3.Do not use the non-standard installation accessories to install the lamp, otherwise any accident is caused will be borne by the installer;

4.Choose the suitable lighting mode according to local sunshine.

5.Please charge the product every 3 months to ensure the activity of the lithium battery;6. lf you storage the product over one year, please do fully charge and discharge inspection and make sure the battery is in good condition, otherwise, it is forbidden to use!

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