A modularized active cell balancing of lithium-ion battery packs using buck-boost converter for electric vehicle applications

IF 4.9 3区计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Computers & Electrical Engineering Pub Date : 2025-10-02 DOI:10.1016/j.compeleceng.2025.110736

Sugumaran G , Amutha Prabha N

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Abstract

Achieving optimal balancing speed and efficiency in lithium-ion battery packs is a growing challenge. This article proposes a novel modularized active cell balancing approach utilizing a buck-boost converter to address this issue. The system comprises two modules, each containing three cells with 3.7 V and 2200 mAh ratings. A two-stage balancing process was implemented in this article, starting with module balancing followed by cell balancing. Various simulation studies in static, charging, and discharging modes were conducted using the MATLAB Simulink platform to assess balancing performance. The simulation outcomes for module balancing show a balancing speed of 7.55 s and a balancing voltage of 10.45 V. The modularized cell balancing achieved a balancing speed of 9.4 s and a balancing voltage of 3.45 V. The modularized balancing efficiency was obtained as 96.7 %. The simulation results are validated with the field programmable gate array (FPGA) based real-time simulator OPAL-RT (OP5700). The proposed topology effectively balances cells, achieving a voltage difference of only 18 mV between MATLAB simulation and real-time simulation, demonstrating its reliability and capability to enhance balancing speed and efficiency significantly.

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一种用于电动汽车的使用降压转换器的锂离子电池组的模块化有源电池平衡

在锂离子电池组中实现最佳的平衡速度和效率是一个越来越大的挑战。本文提出了一种新的模块化有源电池平衡方法，利用降压升压转换器来解决这个问题。该系统包括两个模块，每个模块包含三个额定电压为3.7 V和2200 mAh的电池。本文实现了一个两阶段的平衡过程，从模块平衡开始，然后是单元平衡。利用MATLAB Simulink平台进行了静态、充电和放电模式的各种仿真研究，以评估平衡性能。仿真结果表明，模块平衡速度为7.55 s，平衡电压为10.45 V。模块化的电池平衡速度为9.4 s，平衡电压为3.45 V。模块化平衡效率为96.7%。利用基于现场可编程门阵列（FPGA）的实时仿真器OPAL-RT （OP5700）验证了仿真结果。所提出的拓扑结构有效地平衡了单元，MATLAB仿真与实时仿真之间的电压差仅为18 mV，证明了其可靠性和显著提高平衡速度和效率的能力。

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

Computers & Electrical Engineering 工程技术-工程：电子与电气

CiteScore

9.20

自引率

7.00%

发文量

661

审稿时长

47 days

期刊介绍： The impact of computers has nowhere been more revolutionary than in electrical engineering. The design, analysis, and operation of electrical and electronic systems are now dominated by computers, a transformation that has been motivated by the natural ease of interface between computers and electrical systems, and the promise of spectacular improvements in speed and efficiency. Published since 1973, Computers & Electrical Engineering provides rapid publication of topical research into the integration of computer technology and computational techniques with electrical and electronic systems. The journal publishes papers featuring novel implementations of computers and computational techniques in areas like signal and image processing, high-performance computing, parallel processing, and communications. Special attention will be paid to papers describing innovative architectures, algorithms, and software tools.