Assessing Useful Remaining Life of Lithium (Li)-Ion Batteries After Deep Discharges

Period of Performance: 04/16/2004 - 10/16/2004


Phase 1 SBIR

Recipient Firm

Yardney Technical Products, Inc.
2000 South County Trail
East Greenwich, RI 02818
Principal Investigator


Yardney/Lithion, Inc. in collaboration with Penn State University (PSU) proposes to undertake an in-depth study of the over-discharge and overcharge behavior of the Li-ion battery, and develop and implement an appropriate prognostics and health management (PHM) technology in relation to its deployment in the JSF. The method consists of measuring the capacity and impedance changes in the battery and evaluating the datausing hybrid automated reasoning schemes involving neural network, fuzzy logic and decision theoretic methods. It is proposed to apply these methods to develop a PHM for the Li-ion battery in relation to its use in the JSF.