基于PI控制的分段恒流锂电池充电器设计
Design of Segmented Constant Current Lithium Battery Charger Based on PI Control
DOI: 10.12677/MOS.2023.125438, PDF,  被引量   
作者: 徐苏东, 阚加荣, 卞佳龙, 周 斌, 李 炎：盐城工学院电气工程学院，江苏 盐城；袁 哲：和远智能科技股份有限公司，山东 济南
关键词: 锂电池充电器；分段恒流；同步Buck；PI算法；双闭环控制；Lithium Battery Charger； Segmented Constant Current； Synchronize Buck； PI Algorithm； Double Closed Loop Control
摘要: 为满足锂电池高效率的充电需求，设计了基于PI控制的分段恒流锂电池充电器。采用同步Buck电路作为主电路，4节锂离子电池串联成锂电池组作为充电目标，采用PI算法对锂电池充电器的输出电流、电压进行双闭环控制，通过可变充电电流实现锂电池组的快速充电。通过MATLAB/Simulink软件建立分段恒流锂电池充电系统的仿真模型，仿真结果表明，所设计的分段恒流锂电池充电器相比传统的恒流–恒压充电模式充电速率提高了2.86%，充电电量提升了4.26%，验证了该分段恒流锂电池充电器的可行性和高效性。
Abstract: In order to meet the demand of high-efficiency charging of lithium battery, a segmented constant current lithium battery charger based on PI control was designed. The synchronous Buck circuit is used as the main circuit, and four lithium-ion batteries are connected in series into a lithium bat-tery pack as the charging target. PI algorithm is used to control the output current and voltage of the lithium battery charger in a double closed-loop way, and the lithium battery pack can be quick-ly charged by variable charging current. The simulation model of the segment-constant-current lithium battery charging system was established by MATLAB/Simulink software. The simulation results showed that the designed segment-constant-current lithium battery charger increased the charging rate by 2.86% and the charging capacity by 4.26% compared with the traditional con-stant-current and constant-voltage charging mode. The feasibility and high efficiency of the seg-mented constant current lithium battery charger are verified.
文章引用：徐苏东, 袁哲, 阚加荣, 卞佳龙, 周斌, 李炎. 基于PI控制的分段恒流锂电池充电器设计[J]. 建模与仿真, 2023, 12(5): 4824-4832. https://doi.org/10.12677/MOS.2023.125438

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