| NUMERICAL STUDY ON THE EFFECTS OF ENVIRONMENTAL
TEMPERATURE OF MAJOR CITIES IN CALIFORNIA ON THE CAPACITY
FADE OF BATTERY CELLS IN ELECTRIC VEHICLES |
| Saekyeol Kim , Taek Keun Lyu , Jae Wan Park |
| Department of Mechanical and Aerospace Engineering, University of California |
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| ABSTRACT |
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Performance of battery cells in an electric vehicle (EV) highly depends on environmental temperature.
However, many studies do not consider its regional or seasonal characteristics. These characteristics can have a significant
impact on the EV battery life in California, where there is a large variation of climate across the state. In some regions, the
maximum ambient temperature can cause a rapid life degradation of the battery cells. In this study, we investigated the
environmental temperature effects of six major cities in California on the capacity fade of the EV battery cells. A numerical
model of an automotive battery pack and cycle-life model of a lithium-ion battery cell were implemented to predict the cell
temperature and its corresponding capacity loss. The numerical results demonstrated the regional and seasonal effects of
environmental temperature must be considered to prevent rapid life degradation in the automotive battery cells. |
| Key Words:
Battery thermal management, Electric vehicle, Environmental temperature, Lithium-ion battery |
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Corresponding Author.
Saekyeol Kim , Email. 
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