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基于开关矩阵单电容均衡器与最优配对算法的串联电池组直接单体均衡

Direct Cell-to-Cell Equalizer for Series Battery String Using Switch-Matrix Single-Capacitor Equalizer and Optimal Pairing Algorithm

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中文摘要

针对串联电池组中因SOC失配、阻抗差异及自放电率不同导致的单体不一致性问题,本文提出了一种基于开关矩阵单电容均衡器及最优配对算法的直接均衡方案。该方法通过自动均衡机制有效缓解了过充与过放风险,提升了电池组的整体利用率与安全性。

English Abstract

In series battery strings, cell-inconsistency is caused by the state-of-charge (SOC) mismatch, nonidentical battery impedance, or different self-discharging rates, and this leads to overcharge and overdischarge. Practically, switched-capacitor equalizers are the most promising means to eliminate the cell inconsistency by virtue of automatic equalization, but the performance is heavily dependent on...
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SunView 深度解读

该技术直接服务于阳光电源的储能业务,特别是PowerTitan和PowerStack系列大型储能系统。电池单体一致性是影响储能系统寿命与安全的核心痛点,该研究提出的开关矩阵均衡拓扑及优化算法,可显著提升BMS(电池管理系统)的主动均衡效率,减少因单体失配导致的容量衰减。建议研发团队关注该拓扑在长串联电池组中的扩展性及控制复杂度,将其作为提升储能系统全生命周期可用容量(Capacity Retention)的关键技术储备,以增强阳光电源在大型储能市场中的技术竞争力。