Trip Specific Worthiness of Replacement of Individual Cells for Battery Pack in Electric Vehicles

2011-01-1361

04/12/2011

Event
SAE 2011 World Congress & Exhibition
Authors Abstract
Content
Ever increasing acceptance of electric vehicles relies on better operation and control of large battery packs. The individual cells in the large battery packs cannot have identical characteristics and may degrade differently due to its manufacturing variability and other factors. It is beneficial to evaluate the performance gain by replacing certain battery modules/cells during actual driving. We have a two-fold objective for this research. First, we are developing an on-line battery module degradation diagnostic scheme using the intrinsic signals of a battery pack equalization circuit. Therefore, a battery “health map” can be constructed and updated in real time. Secondly, based on the derived battery health map, the performance of the battery pack will be evaluated for customer specified trip so as to evaluate the “worthiness of replacing” certain modules/cells.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-1361
Pages
9
Citation
Ugle, R., and Li, Y., "Trip Specific Worthiness of Replacement of Individual Cells for Battery Pack in Electric Vehicles," SAE Technical Paper 2011-01-1361, 2011, https://doi.org/10.4271/2011-01-1361.
Additional Details
Publisher
Published
Apr 12, 2011
Product Code
2011-01-1361
Content Type
Technical Paper
Language
English