Patent ID: 8004243
Filing Date: 2011-08-23
Classification: G01R

Abstract:
1. A method for estimating battery capacity of a battery, the method comprising the steps of: reading CAC monitoring battery current of the battery using a current sensor; determining SOCbyAh determining SOCbyOCV determining SOCbyAh determining SOCbyOCV calculating ΔSOCbyAh, wherein calculating ΔSOCbyOCV, wherein calculating a weighting function, W, defined as wherein SOCbyAhError is the error associated with determining SOCbyAh, SOCbyOCVError is the error associated with determining SOCbyOCV, SOCbyOCVErrorPrev is the previously determined error associated with SOCbyOCV, and k 1 , k 2 and k 3 are constants; and calculating CAC