文E电池电量计：以精度制胜

文E电池电量计：以精度制胜Maxim/Dallas > App Notes > BATTERY MANAGEMENT Keywords: fuel gauge IC, Li+, Li-Ion, Lithium-Ion, Li+ fuel gauge, coulomb counter, smart battery, smart batteries, programmable fuel gauge, fuel gauge circuits, battery capacity, battery fuel gauge, battery fuel gauges

Nov 21, 2006

APPLICATION NOTE 3958

Battery Fuel Gauges: Accurately Measuring Charge Level
Battery fuel gauges determine the amount of charge remaining in a secondary battery and how much longer (under specific operating conditions) the battery can continue providing power. This application note discusses the challenges presented in measuring the charge remaining in a lithium-ion battery and the different methods of implementing a fuel gauge to address these challenges.

Introduction
Since the advent of the mobile phone, charg