Home > News > Content

Solar Home Lighting System Scale And Application

Solar LED lighting system scale and application in different forms, solar home lighting system system scale span is large, small to 0.3 ~ 2W lawn lamp, large to several hundred watts of solar LED high pole lights. Its application forms are also different, and can be widely used in the communications, space and many other areas of home, transportation, solar home lighting systems. Although the size of solar LED lighting system is not the same, but the composition and working principle of solar home lighting system is basically the same. Solar LED lighting system by the solar array; battery; controller (part of the controller integrated LED driver, while the controller and LED driver discrete); LED light source.

In the solar LED lighting system, the solar home lighting system is the most important solar cells, because it is the core components of solar energy collection. Solar home lighting system due to technical and material reasons, a solar cell power generation is very limited, practical solar cells are a single battery string, parallel to the composition of solar modules. In recent years, with the mainstream of solar cells, crystalline silicon cells, raw material prices continue to rise, resulting in a sharp rise in the cost of crystalline silicon cells, making the cost advantage of amorphous silicon cells more obvious. In addition, the solar home lighting system thin film battery (which saves the use of raw materials, solar home lighting system thus greatly reduces the cost) has become the direction of solar cell development, but its technical requirements are very high, and amorphous silicon thin film batteries The most mature technology of the battery, the most promising varieties.

The battery pack is a storage device for solar LED lighting systems that converts DCs from solar radiant energy to chemical energy into storage applications. Since the energy output of the solar cell module is extremely unstable, it is often necessary to configure the battery to make the load work properly. The energy generated by the solar cell is stored in the battery in the form of chemical energy. When the load requires energy, the battery converts the chemical energy into electrical energy. The characteristics of the battery directly affect the efficiency of solar LED lighting system, reliability and price. Solar home lighting system battery capacity selection generally follow the principle is: first in the load to meet the premise of electricity, solar modules during the day generated by the energy storage as much as possible, home solar lighting system can also store the expected rainy days need power load

The battery capacity is affected by the terminal load power, sunshine time (power generation time). Therefore, when the power and the need for continuous sunshine time load, the battery power is determined, so the battery performance directly affects the operating characteristics of solar LED lighting system. At present, solar LED lighting system is widely used in valve sealed lead-acid batteries, solar home lighting systems, deep discharge of liquid absorption of lead-acid batteries, solar cells.

The role of the controller is to make the solar cell and battery efficiency and reliability to the most effective and extend battery life. The controller controls the charge and discharge of the battery, and controls the output power of the solar cell module and the battery according to the power demand of the load. This is the core part of the whole solar LED lighting system. Through the controller on the battery charging and discharge conditions to prevent the battery from charging, charging and discharging and discharge. In addition, the solar home lighting system should also have a circuit short circuit protection, reverse protection, lightning protection and temperature compensation and other functions. Because the output energy of the solar cell is extremely unstable, the quality of the charge and discharge control circuit of the controller is very important to the design of the solar energy system.

In the solar LED lighting system, the controller should make the solar cell module is always close to the maximum power generation point, to achieve maximum efficiency. Solar home lighting system charge control is usually used pulse width modulation technology, PWM control mode, discharge control is mainly refers to the battery power shortage, system failure, solar home lighting system switch off when the battery is turned on or reverse the situation.