Patent ID: 8519675

Claim:
A system for determining an estimated battery cell module state indicative of a state of a battery cell module of a battery pack, comprising: a voltage sensor electrically coupled to the battery cell module, the voltage sensor configured to generate a first signal indicative of a battery cell module voltage; a current sensor electrically coupled to the battery cell module, the current sensor configured to generate a second signal indicative of a battery cell module current; a temperature sensor disposed proximate the battery cell module, the temperature sensor configured to generate a third signal indicative of battery cell module temperature; and a computer configured to receive the first, second, and third signals, the computer is further configured to determine the estimated battery cell module state at the predetermined time based on an estimated battery pack state and at least one of the first, second, and third signals, the computer further configured to store a vector corresponding to the estimated battery cell module state in a memory.