Improving battery performance by using traffic shaping techniques

摘要

We present a new approach to minimizing energy consumption bynaddressing battery management techniques that exploit the chargenrecovery effect inherent to many secondary storage batteries. We reviewnresults that pertain to the capacity of a battery and its dependence onnthe intensity of the discharge current. The phenomenon of chargenrecovery that takes place under bursty or pulsed discharge conditions isnidentified as a mechanism that can be exploited to enhance the capacitynof a battery. The bursty nature of many data traffic sources suggestsnthat data transmissions may provide natural opportunities for chargenrecovery. We explore stochastic models to track charge recovery innconjunction with bursty discharge processes. Using the postulated model,nwe identify the improvement to battery capacity that results from anpulsed discharge driven by bursty stochastic discharge demand. Theninsight from this analysis leads us to propose discharge shapingntechniques that trade-off energy efficiency with delay