Patent ID: 8180512
Filing Date: 2012-05-15
Classification: B60L,H01M,Y02E,Y02T,Y10S

Abstract:
1. A method of optimizing a power source utilized by an electric vehicle, the power source including at least a first battery pack and a second battery pack, wherein the first and second battery packs are comprised of different battery types, the method comprising the steps of: a) determining a first state-of-charge (SOC) of the first battery pack and a second SOC of the second battery pack; b) determining a vehicle efficiency, wherein said vehicle efficiency corresponds to an average conversion efficiency for said electric vehicle for converting an output from said power source to miles traveled; c) obtaining a travel distance, wherein said travel distance corresponds to an expected distance to travel before a subsequent charging cycle; d) determining an optimal split between said first and second battery packs based on said vehicle efficiency and said first and second SOCs, wherein said step of determining said optimal split further comprises the step of minimizing use of said second battery pack while still providing the electric vehicle with sufficient power to traverse said travel distance; e) setting at least one acceleration limit based on said vehicle efficiency and said first and second SOCs; and f) providing power to said electric vehicle from said power source in accordance with said optimal split.