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Solar Home Lighting System Variety

Solar Home Lighting System Solar LED lighting system scale and application of different forms, the system scale span is very large, small to 0.3 lawn lamp, large to hundreds of watts of solar led high pole lamp. Its application form is also various, in the home, the transportation, the communication, the space and so on many domains can obtain the widespread application. Although the solar LED lighting system is of varying size, Solar Home Lighting System its composition and working principle are basically the same. Solar LED lighting system by solar cell array; The controller (some controller integration has led driver function, also has the controller and led driver separation); LED light source composition. Solar LED lighting system composition

Solar cells are mainly divided into crystalline silicon cells (including Monocrystalline Monoc-si, polysilicon Multi, ribbon Silicon Ribbon Sheetc), amorphous silicon cells (a-SI), non-silicon cells (including selenium-copper-indium cis, cadmium telluride CdTe).

The most important thing in solar LED lighting systems is solar cells, which are the core components for collecting sunlight. Due to the technical and material reasons, the power generation of a single solar cell is very limited, and the practical solar cell is a serial and parallel solar cell component of a single cell. In recent years, as the mainstream technology of solar cells, crystalline silicon cells of raw materials prices continue to rise, resulting in a sharp increase in the cost of crystalline silicon cells, which makes the cost advantage of amorphous silicon battery more obvious. In addition, thin-film battery (greatly reduce the use of raw materials, Solar Home Lighting System thus significantly reducing costs) has become the direction of the development of solar cells, but its technical requirements are very high, and the amorphous silicon thin film battery as the most mature thin-film battery, is currently the most promising variety of thin-film battery.

The battery group is the energy storage device in the solar led illumination system, which converts the solar cell components from the solar radiant energy into chemical energy for the application of the load. Because the energy of the solar module output is very unstable, it is necessary to configure the battery to make the load work normally. The electricity produced by solar cells is stored in the form of chemical energy, Solar Home Lighting System and when the load needs power, the battery converts the chemical energy to the power supply. The characteristics of the battery directly affect the efficiency, reliability and price of the solar LED lighting system. The choice of storage battery is generally to follow the principle is: first, in order to meet the load of electricity, the daytime solar cell components generated by the energy as much as possible storage, but also to be able to store a predetermined continuous rainy day load required energy.

The battery capacity is affected by the terminal load and the sunshine Time (generation time). As a result, the capacity of storage battery is determined by the predetermined load and the continuous sunshine time, Solar Home Lighting System so the performance of the battery directly affects the working characteristics of the solar LED lighting system. At present, solar LED lighting system is commonly used valve-controlled sealed lead-acid batteries, deep discharge liquid-absorbent lead-acid batteries, solar-specific colloid batteries.

The role of the controller is to enable solar cells and batteries to work efficiently, safely and reliably, to achieve maximum efficiency and prolong the battery life. Solar Home Lighting System The controller is the core part of the whole solar led illumination system, Solar Home Lighting System which controls the charging and discharging of the battery, and according to the power demand of the load, the solar module and the battery output power. Solar Home Lighting System Through the controller to the storage battery charging and discharging conditions to limit, to prevent the battery back charging, overcharge and over discharge. In addition, it should have the functions of short circuit protection, reverse protection, lightning protection and temperature compensation. Because the output energy of solar cells is very unstable, the quality of the controller charge and discharge control circuit is very important for the design of solar power system.

The controller should make solar cell components in the LED lighting system always near the maximum power point of power generation to achieve maximum efficiency. And the charging control is usually used pulse width modulation technology that is the PWM control mode, the discharge control mainly refers to when the battery is short of electricity, system failure, such as battery open or reverse switch off.