SoH-Aware Charging of Supercapacitors With Energy Efficiency Maximization
SoH-Aware Charging of Supercapacitors With Energy Efficiency Maximization
复制标题
DOI：
10.1109/tec.2018.2841427
复制
发表时间：
2018-05
影响因子：
4.9
通讯作者：
Heng Li;Jun Peng;Yanhui Zhou;Jianping He;Zhiwu Huang;Liang He;Jianping Pan
中科院分区：
文献类型：
--
作者：
Heng Li;Jun Peng;Yanhui Zhou;Jianping He;Zhiwu Huang;Liang He;Jianping Pan
近年来，在便携式电子产品中基于超级电容器的应用取得了重大进展，其中开关电阻电路在给超级电容器充电时充当公共电池平衡电路。然而，现有的充电控制方法存在能量效率低、能量损失大、发热等问题。为了最大限度地提高超级电容器在充电过程中的能量效率，提出了一种健康状态感知（SoH）节能充电方法。首先，我们提供了能源效率最大化的充分必要条件。然后，设计了一种在线SoH估计算法，实时估计电容和平衡电阻。在此基础上，提出了一种可感知soh的节能充电算法。为了验证所提出的充电算法的有效性，建立了一个充电器原型。大量的仿真和实验结果表明，与现有方法相比，所提设计的能量效率有很大提高。
Recent years have seen significant advances in supercapacitor-based applications in portable electronics, where the switching resistor circuit acts as a common cell balancing circuit when charging the supercapacitors. However, existing charging control methods suffer from low energy efficiency, leading to considerable energy loss, and thermal heating. In this paper, we propose a state-of-health (SoH)-aware energy-efficient charging method to maximize the energy efficiency of supercapacitors during the charging process. First, we provide a sufficient and necessary condition to maximize the energy efficiency. Then, an online SoH estimation algorithm is designed to estimate capacitance and balancing resistance in real time. Thereafter, an SoH-aware energy-efficient charging algorithm is further proposed to be implemented in microcontrollers. A charger prototype has been built to verify the effectiveness of the proposed charging algorithm. Extensive simulation and experiment results show that the energy efficiency of the proposed design is improved considerably when compared with existing methods.