Solar LED lighting program selection and development

Principle of using the photovoltaic effect of solar cells made from solar panels during the day and to receive solar radiation into electrical energy output, after charge-discharge controller is stored in batteries at night when the illumination gradually reduced to 101ux about 4.5V open circuit voltage of solar panels so, charge and discharge controller detects the voltage value of this action, the battery discharge to the head. After 8.5 hours of battery discharge, charge and discharge controller action, the end of battery discharge. Charge and discharge controller's main role is to protect the battery.

Calculation of design capacity battery compared to the peak wattage solar modules should be simple.

Based on the above calculation to know the load on power consumption 12.2AH. In the case of the battery is full, you can work seven consecutive rainy days, plus the first night of work, the battery capacity:

12.2 × (7 1) = 97.6 (AH), 2 12V100AH selected to meet the requirements of the battery.

Solar LED lighting system controller

Solar charge controller's main role is to protect the battery. Basic functions must have overcharge protection, overdischarge protection, light control, time control and anti-reverse and so on.

Battery against overcharge, over-discharge protection voltage general parameters in Table 1, when the battery voltage reaches the set value after changing the circuit state.

At present, the initial investment in solar LED lighting is still a major problem plaguing us. However, the luminous efficiency of solar cells is gradually increased, and prices will gradually decrease, and likewise LED light effect on the market increases rapidly, and prices are lower. And solar and renewable, clean pollution-free and environmentally friendly energy saving LED's compared to conventional fossil energy sources has become tighter, and the environment after use will result in increasingly serious pollution. Therefore, the solar LED lighting as a burgeoning outdoor lighting will show us endless vitality and broad prospects.