解码电动汽车的续航里程变化:解读电池间参数变化和电池组配置的影响

IF 15 1区 工程技术 Q1 ENERGY & FUELS Etransportation Pub Date : 2024-04-03 DOI:10.1016/j.etran.2024.100329
Sourabh Singh , Sarbani Mandal , Sai Krishna Mulpuri , Bikash Sah , Praveen Kumar
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引用次数: 0

摘要

本研究探讨了电池生产过程中常见的因制造公差引起的电池间差异及其影响。重点是评估电池中这些固有差异的影响,并探讨不同电池和模块连接方法对电池组性能的影响,以及随后对电动汽车(EV)行驶里程的影响。分析涵盖三种电池组尺寸,包括各种恒定放电率和九种不同的驱动循环,代表了印度不同地区的驾驶行为。研究了 "串联 "和 "交叉 "两种互连拓扑结构。研究结果表明,与串联配置相比,交叉连接的电池组显示出较低的能量输出,这反映在驱动循环模拟中观察到的行驶里程结果上。此外,研究还调查了电池参数中标准偏差的影响,得出的结论是标准偏差(SD)的增加会导致电池组输出的能量减少。值得注意的是,在这种条件下,串联式电池组在可提取能量方面表现出更优越的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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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.

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来源期刊
Etransportation
Etransportation Engineering-Automotive Engineering
CiteScore
19.80
自引率
12.60%
发文量
57
审稿时长
39 days
期刊介绍: eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation. The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment. Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.
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