Abstract
Battery wear in plug-in electric vehicles (PEVs) is a complex function of ambient temperature, battery size, and disparate usage. Simulations capturing varying ambient temperature profiles, battery sizes, and driving patterns are of great value to battery and vehicle manufacturers. A predictive battery wear model developed by the National Renewable Energy Laboratory captures the effects ofmultiple cycling and storage conditions in a representative lithium chemistry. The sensitivity of battery wear rates to ambient conditions, maximum allowable depth-of-discharge, and vehicle miles travelled is explored for two midsize vehicles: a battery electric vehicle (BEV) with a nominal range of 75 mi (121 km) and a plug-in hybrid electric vehicle (PHEV) with a nominal charge-depleting rangeof 40 mi (64 km). Driving distance distributions represent the variability of vehicle use, both vehicle-to-vehicle and day-to-day. Battery wear over an 8-year period was dominated by ambient conditions for the BEV with capacity fade ranging from 19% to 32% while the PHEV was most sensitive to maximum allowable depth-of-discharge with capacity fade ranging from 16% to 24%. The BEV and PHEV werecomparable in terms of petroleum displacement potential after 8 years of service, due to the BEV?s limited utility for accomplishing long trips.
Original language | American English |
---|---|
Number of pages | 14 |
State | Published - 2012 |
Event | International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium 26 (EVS26) - Los Angeles, California Duration: 6 May 2012 → 9 May 2012 |
Conference
Conference | International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium 26 (EVS26) |
---|---|
City | Los Angeles, California |
Period | 6/05/12 → 9/05/12 |
NREL Publication Number
- NREL/CP-5400-53953
Keywords
- battery calendar life
- BEV
- cycle life
- EVS26
- lithium ion batteries
- PHEV