Open AccessAdvanced Technology Development Program for Lithium-Ion Batteries: Gen 2 GDR Performance Evaluation Report
Author(s) -
Jon P. Christophersen,
Chinh D. Ho,
G. L. Henriksen,
David R. Howell
Publication year - 2006
Language(s) - English
Resource type - Reports
DOI - 10.2172/911665
Subject(s) - battery (electricity) , lithium (medication) , reliability engineering , matrix (chemical analysis) , characterization (materials science) , computer science , power (physics) , engineering , electrical engineering , materials science , nanotechnology , medicine , physics , quantum mechanics , composite material , endocrinology
The Advanced Technology Development Program has completed the performance evaluation of the second generation of lithium-ion cells (i.e., Gen 2 cells). This report documents the testing and analysis of the Gen 2 GDR cells, which were used to learn and debug the newly developed Technology Life Verification Test Manual. The purpose of the manual is to project a 15-year, 150,000 mile battery life capability with a 90% confidence interval using predictive models and short-term testing. The GDR cells were divided into two different matrices. The core-life test matrix consisted of calendar- and cycle-life cells with various changes to the four major acceleration factors (temperature, state-of-charge, throughput, and power rating). The supplemental-life test matrix consisted of cells subjected either to a path dependence study, or a comparison between the standard hybrid pulse power characterization test and the newly-developed minimum pulse power characterization test. Resistance and capacity results are reported