Impact of constant and pulsed active balancing current patterns on the aging of lithium-ion batteries

IF 1.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Microelectronics Reliability Pub Date : 2025-05-28 DOI:10.1016/j.microrel.2025.115814

M.A. Hussain, A. Soldati, G. Sozzi

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引用次数: 0

Abstract

Lithium-ion batteries (LIB) have been widely used in electric vehicles for the past decade because of their advantageous properties, such as low self-discharge, high power and energy density, long life, wide operating temperature range, and lack of memory effect. However, the available energy and power deteriorate because of inconsistent operations caused by various external factors. For stable operation, it is crucial to focus on the accurate assessment of the state of health (SOH) of LIB, which is a challenging task. This article presents an investigation of the effect of different current patterns (constant- and pulsed-current discharge) on battery performance. Constant current (CC) and pulsed current (PC) cycles were used to represent possible current battery patterns to be used during active cell balancing. This analysis was conducted using a simple and cost-effective method that aims to measure the battery capacity directly by integrating current over time. The findings indicate higher capacity retention and lower thermal stress when the LIB is cycled under PC discharge than under CC discharge. To thoroughly explore the effects of both current patterns, a comparative analysis of the capacity fade and change in internal resistance is considered. Compared with CC discharge, the capacity fade and power loss due to increase in resistance were relatively improved by 2 % and 8.7 %, respectively, under PC discharge. These results show that PC is preferable in active balancing solutions to preserve the LIB lifetime and performance.

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恒电流和脉冲有源平衡电流模式对锂离子电池老化的影响

近十年来，锂离子电池以其自放电小、功率和能量密度高、寿命长、工作温度范围宽、无记忆效应等优点在电动汽车中得到了广泛的应用。然而，由于各种外部因素造成的运行不一致，可用的能量和功率会下降。为了保证LIB的稳定运行，如何准确评估LIB的健康状态（SOH）是一项具有挑战性的任务。本文研究了不同电流模式（恒流和脉冲流放电）对电池性能的影响。恒流（CC）和脉冲电流（PC）循环被用来表示在主动电池平衡过程中可能使用的电流电池模式。这项分析使用了一种简单而经济的方法，旨在通过积分电流随时间直接测量电池容量。结果表明，与CC放电相比，PC放电下锂离子电池的容量保持率更高，热应力更小。为了深入探讨两种电流模式的影响，我们考虑了容量衰减和内阻变化的比较分析。与CC放电相比，PC放电的容量衰减和电阻增加造成的功率损耗分别相对改善了2%和8.7%。这些结果表明，PC在主动平衡解决方案中更可取，以保持LIB寿命和性能。

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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来源期刊

Microelectronics Reliability 工程技术-工程：电子与电气

CiteScore

3.30

自引率

12.50%

发文量

342

审稿时长

68 days

期刊介绍： Microelectronics Reliability, is dedicated to disseminating the latest research results and related information on the reliability of microelectronic devices, circuits and systems, from materials, process and manufacturing, to design, testing and operation. The coverage of the journal includes the following topics: measurement, understanding and analysis; evaluation and prediction; modelling and simulation; methodologies and mitigation. Papers which combine reliability with other important areas of microelectronics engineering, such as design, fabrication, integration, testing, and field operation will also be welcome, and practical papers reporting case studies in the field and specific application domains are particularly encouraged. Most accepted papers will be published as Research Papers, describing significant advances and completed work. Papers reviewing important developing topics of general interest may be accepted for publication as Review Papers. Urgent communications of a more preliminary nature and short reports on completed practical work of current interest may be considered for publication as Research Notes. All contributions are subject to peer review by leading experts in the field.