Microcontroller simplifies battery-state-of-charge measurement

摘要

A system that receives its power from a renewable-energy source, such as a photovoltaic panel or a wind-driven generator, typically accumulates power in a rechargeable battery and delivers it to a load. Often, both processes occur simultaneously. Periodic evaluation of the battery's remaining charge ensures extended performance and battery life, as does control of the battery current that goes to the load. A battery's residual charge comprises its previously calculated charge plus the amount of newly accumulated charge or minus the amount of charge it expends.