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A Highly Accurate Li-Ion Battery Charger Based on Digital Controlled Source

YAN Wei1,2 LIU Yuzhang1,2 KANG Qi3   

  1. 1. ShangHai Research Institute of MicroElectronicsSHRIME, Peking University, Shanghai 210203; 2. School of Software and Microelectronics, Peking University, Beijing 100871; 3. Department of Control Science and Engineering, Tongji University, Shanghai 201804;
  • Received:2010-12-10 Online:2011-11-20 Published:2011-11-20



  1. 1. 上海北京大学微电子研究院, 上海 210203; 2. 北京大学软件与微电子学院, 北京 100871; 3. 同济大学控制科学与工程系, 上海 201804;

Abstract: A highly accurate Li-ion battery charging approach based on digitally controlled source by hardware was proposed. To avoid a reduced working life and a potential blast in conventional charging systems with less accurate signal-sample and control, it can synchronously detect the instant charging-states of each single cell in the whole series combinations with more stable and accurate, digitally controlled outputs. In some turbulent energy supplies from the reproducible source, the stable, accurate and universal charging system could be utilized to gain maximized efficiency of charging with minimum defaults.

Key words: digital controlled source, Li-ion battery, high accuracy

摘要: 提出了一种基于数字受控源, 由纯硬件实现控制算法的锂电池组储能方案。该方案能够同时检测锂电池组中各单体电池的状态, 并通过稳定且高精度的数控电信号输出, 为锂电池组提供最佳的储能模式, 解决了传统充电器控制方式中相对粗糙的信号采集与控制所造成的电池寿命缩短的问题, 并消除了充电过程中电池爆裂等安全方面的隐患。在一些不稳定的可再生能源供给的采集与存储等应用场所, 这种可靠、精确且通用性强的锂电池组的储能管理方案得以实施, 可为锂电池供电系统发挥出最优性能提供保障。

关键词: 数字受控源, 锂电池, 高精度

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