Patent ID: 9575130
Date: 2017-02-21
CPC Classifications: G01D,G01R,G06F,G16Z,H01M,Y02E

Claim:
1. A method for determining the capacity of a battery cell, wherein a battery cell current I is measured during a measurement time period and an open circuit voltage U OCV1 , U OCV2 of the battery cell is measured at the beginning and end of the measurement time period, the method comprising: a) determining, by a battery management system ( b) determining, by the battery management system ( c) determining, by the battery management system ( d) determining, by the battery management system ( of the estimated value of the capacity Q est from measurement errors of the total battery cell current I tot and the states of charge SOC 1 , SOC 2 , e) determining, by the battery management system ( wherein the new value of the capacity Q