电工技术学报  2021, Vol. 36 Issue (20): 4274-4284    DOI: 10.19595/j.cnki.1000-6753.tces.201686
高频/超高频功率变换技术及其应用专题 |
基于多端口变压器的串联锂电池均压电路
聂江霖1, 杨江朋1, 蔡春健1, 孙鑫宇1, 舒泽亮1,2
1.西南交通大学电气工程学院 成都 611756;
2.西南交通大学磁浮列车与技术研究所 成都 610031
Voltage Equalizing Circuit of Series Lithium Battery Based on Multi-Port Transformer
Nie Jianglin1, Yang Jiangpeng1, Cai Chunjian1, Sun Xinyu1, Shu Zeliang1,2
1. School of Electrical Engineering Southwest Jiaotong University Chengdu 611756 China;
2. The Ministry of Education Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle Southwest Jiaotong University Chengdu 610031 China
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摘要 串联电池组需要均压措施保证其容量、寿命和安全。该文提出一种基于多端口变压器的串联锂电池均压电路,通过主动和被动两种均压路径实现高可控与高效率的整体均压。与同类均压电路相比,无需附加额外电路,且变压器绕组和开关管数量减少一半。通过电路建模分析确定设计变压器电压比等关键参数的约束条件,并在传统平均电压控制策略的基础上提出预测电压和最低电压两种控制策略。最后,针对24串联锂电池组设计基于GaN开关器件和平面多端口变压器的均压样机,实验结果表明,所提电路和控制方法具有良好的均压速度和效率。
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舒泽亮
聂江霖
杨江朋
蔡春健
孙鑫宇
舒泽亮
关键词 串联锂电池均压电路多端口变压器预测电压控制策略最低电压控制策略    
Abstract:A series lithium battery pack needs voltage equalization to ensure its life and safety. In this paper, a series voltage equalizing circuit of lithium battery based on multi-port transformer is proposed, which can realize the controllable voltage equalization through active and passive paths. And it can directly control the charging or discharging of specific batteries. Compared with the conventional congeneric methods, it requires no additional circuits. Also, the number of transformer windings and MOSFET is reduced by half. By modeling and analyzing the circuit, the constraint conditions of key parameters such as transformer turn ratio are determined. In addition, predicted voltage and lowest voltage control strategies are proposed based on the traditional average voltage control strategy. Finally, a voltage equalization prototype based on GaN MOSFET and planar multi-port transformer is designed for 24 series battery packs. It is shown that the proposed circuit and control strategies have good voltage equalizing speed and efficiency.
Key wordspredicted voltage control strategy    lowest voltage control strategy    lowest voltage control strategy    Lithium battery series voltage equalizer    multi-port transformer    predicted voltage control strategy    lowest voltage control strategy   
收稿日期: 2020-12-25     
PACS: TM911  
基金资助:国家自然科学基金(52077183)和国家轨道交通电气化与自动化工程技术研究中心开放课题(第三期)(NEEC-2019-A04)资助项目
通讯作者: 舒泽亮 男,1979年生,教授,博士生导师,研究方向为电力电子技术及应用、多电平变换装置、同相供电系统等。E-mail:shuzeliang@swjtu.edu.cn   
作者简介: 聂江霖 男,1997年生,硕士,研究方向为蓄电池均压电路及其控制。E-mail: jacksonen@163.com
引用本文:   
聂江霖, 杨江朋, 蔡春健, 孙鑫宇, 舒泽亮. 基于多端口变压器的串联锂电池均压电路[J]. 电工技术学报, 2021, 36(20): 4274-4284. Nie Jianglin, Yang Jiangpeng, Cai Chunjian, Sun Xinyu, Shu Zeliang. Voltage Equalizing Circuit of Series Lithium Battery Based on Multi-Port Transformer. Transactions of China Electrotechnical Society, 2021, 36(20): 4274-4284.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.201686          https://dgjsxb.ces-transaction.com/CN/Y2021/V36/I20/4274