Patent ID: 8299756

Claim:
A method for controlling stored battery charge, the method comprising: sensing a present state of charge (SoC) of one or more batteries and generating present SoC data there from; sensing a present excursion defined by a relationship represented as maximum SoC−minimum soC for a desired cycle and generating present excursion data there from; modulating a transfer function power and current charge rate control limit based on the present SoC data and the present excursion data for the one or more batteries by adjusting the power and current charge and discharge control limits upward as the excursion increases above a desired limit, and adjusting the power and current charge and discharge control limits downward as the excursion decreases below a desired limit; and powering a hybrid vehicle during a mission using the one or more batteries while controlling power/current charging limits for the one or more batteries such that battery life and fuel consumption rate for the hybrid vehicle is increased above the battery life and fuel consumption rate using a constant power and current charging system.