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Battery chargers get charged from solar

Posted: 22 Sep 2009 ?? ?Print Version ?Bookmark and Share

Keywords:solar energy? battery charger solar? mobile phone charger?

Solar energy is an attractive energy source for powering portable devices. For some time, it has been widely used in applications like calculators and spacecraft. More recently, solar power is being considered for a much wider range of consumer applications including mobile phone chargers.

However, power available from a solar panel is heavily dependent on the operating environment. This includes such things as light intensity, time and location. Therefore, batteries typically are used as energy storage elements. They can be charged when extra power is available from the solar panel, as well as to power the system when the available power from the solar panel is insufficient. How do we design a Li-ion battery charger to get the most out of the solar cells and efficiently charge the Li-ion battery?

This article discusses the operating principle and electrical output characteristics of a solar cell. Then, it covers battery charging system requirements and system solutions for matching the solar cell characteristics to get the maximum power from the solar cells.

View the PDF document for more information.

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