Decoding range variability in electric vehicles: Unravelling the influence of cell-to-cell parameter variation and pack configuration
- This study addresses the common occurrence of cell-to-cell variations arising from manufacturing tolerances and their implications during battery production. The focus is on assessing the impact of these inherent differences in cells and exploring diverse cell and module connection methods on battery pack performance and their subsequent influence on the driving range of electric vehicles (EVs). The analysis spans three battery pack sizes, encompassing various constant discharge rates and nine distinct drive cycles representative of driving behaviours across different regions of India. Two interconnection topologies, categorised as “string” and “cross”, are examined. The findings reveal that cross-connected packs exhibit reduced energy output compared to string-connected configurations, which is reflected in the driving range outcomes observed during drive cycle simulations. Additionally, the study investigates the effects of standard deviation in cell parameters, concluding that an increased standard deviation (SD) leads to decreased energy output from the packs. Notably, string-connected packs demonstrate superior performance in terms of extractable energy under such conditions.
Document Type: | Article |
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Language: | English |
Author: | Sourabh Singh, Sarbani Mandal, Sai Krishna Mulpuri, Bikash Sah, Praveen Kumar |
Parent Title (English): | eTransportation |
Volume: | 20 |
Issue: | 3 |
Article Number: | 100329 |
Number of pages: | 15 |
ISSN: | 2590-1168 |
URN: | urn:nbn:de:hbz:1044-opus-82657 |
DOI: | https://doi.org/10.1016/j.etran.2024.100329 |
Publishing Institution: | Hochschule Bonn-Rhein-Sieg |
Date of first publication: | 2024/04/09 |
Copyright: | © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. |
Funding: | The publication cost is partially covered by the Library Hochschule Bonn-Rhein-Sieg and the Startförderung (28731207) granted to the corresponding author from Hochschule Bonn-Rhein-Sieg. |
Keyword: | Battery pack configurations; Cell-to-cell parameter variations; Electric Vehicles; Range variability |
Departments, institutes and facilities: | Fachbereich Ingenieurwissenschaften und Kommunikation |
Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE) | |
Dewey Decimal Classification (DDC): | 3 Sozialwissenschaften / 38 Handel, Kommunikation, Verkehr / 380 Handel, Kommunikation, Verkehr |
Entry in this database: | 2024/04/15 |
Licence (German): | Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International |