Author : Ira D. Bloom
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)
Book Synopsis U.S. DOE FreedomCAR and Vehicle Technologies Advanced Technology Development Program for Lithium-Ion Batteries by : Ira D. Bloom
Download or read book U.S. DOE FreedomCAR and Vehicle Technologies Advanced Technology Development Program for Lithium-Ion Batteries written by Ira D. Bloom and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Technology Development Program is currently evaluating theperformance of the second generation of Lithium-ion cells (i.e., Gen 2 cells). The18650-size Gen 2 cells consist of a baseline chemistry and one variant chemistry. These cells were distributed over a matrix consisting of three states-of-charge (SOC)(60, 80, and 100% SOC), four temperatures (25, 35, 45, and 55°C), and three life tests(calendar-, cycle-, and accelerated-life). The calendar-life cells are clamped at an opencircuitvoltage corresponding to 60% SOC and undergo a once-per-day pulse profile. The cycle-life cells are continuously pulsed using a profile that is centered around 60%SOC. The accelerated-life cells are following the calendar-life test procedures, butusing the cycle-life pulse profile. Life testing is interrupted every four weeks forreference performance tests (RPTs), which are used to quantify changes in capacity, resistance, and power. The RPTs consist of a C1/1 and C1/25 static capacity tests, alow-current hybrid pulse power characterization test, and electrochemical impedancespectroscopy at 60% SOC. Capacity-, power-, and electrochemical impedancespectroscopy-based performance results are reported.