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Selection and development of solar-powered LED lighting scheme

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Use light v effect made solar cells solar panel receives solar radiation during the day and into electricity output, after charge and discharge controller is stored in batteries, the evening when the light gradually lowered to about 101ux, solar panels open circuit voltage of 4.5V, charge and discharge controller detects the voltage value action, on head discharge of the battery. After 8.5 hours of battery discharge, charge and discharge controller actions, battery discharge end. Charge and discharge controller's primary role is to protect the battery.

  Battery design compared to the number of peak watt solar module capacity calculation easier.


  Based on the above calculation know that load power consumption 12.2AH. batteries are full of cases, you can work 7 consecutive rainy days, coupled with the work of the first night, battery capacity:


  12.2x (7+1) =97.6 (AH), selected 2 12V100AH battery can meet the requirements.


  Controller for solar-powered LED lighting system


  Charge and discharge controller of solar energy's primary role is to protect the battery. Basic functions must be overcharge protection, over discharge protection, such as light control, control and counter.


  Protection against over charge, over discharge voltage of the battery general parameters in table 1, when the battery voltage reaches the set value and then changing state circuit.


  At present, the initial investment problem of solar-powered LED lighting is still haunt us for a major problem. However, solar cell efficiency increases, and prices will gradually decrease, and likewise LED luminous efficiency in rapid increases in the market, but the price is reduced. With solar renewable, clean and free of pollution and environmental protection and energy saving of LED compared to conventional fossil fuels become increasingly strained and after use will result in worsening of pollution to the environment. Therefore, solar-powered LED lighting outdoor lighting as an ascendant, is presented to our infinite vitality and broad prospects
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