Abstract
Electric-drive vehicles utilizing lithium-ion batteries experience wholly different degradation patterns than do conventional vehicles, depending on geographic ambient conditions and consumer driving and charging patterns. A semi-empirical life-predictive model for the lithium-ion graphite/nickel-cobalt-aluminum chemistry is presented that accounts for physically justified calendar and cyclingfade mechanisms. An analysis of battery life for plug-in hybrid electric vehicles considers 782 duty-cycles from travel survey data superimposed with climate data from multiple geographic locations around the United States. Based on predicted wear distributions, opportunities for extending battery life including modification of battery operating limits, thermal and charge control are discussed.
| Original language | American English |
|---|---|
| Number of pages | 9 |
| State | Published - 2012 |
| Event | 2012 American Control Conference - Montreal, Canada Duration: 27 Jun 2012 → 29 Jun 2012 |
Conference
| Conference | 2012 American Control Conference |
|---|---|
| City | Montreal, Canada |
| Period | 27/06/12 → 29/06/12 |
NREL Publication Number
- NREL/CP-5400-54698
Keywords
- calendar fade
- climates
- cycling fade
- degradation
- life model
- lithium ion batteries
