| 引用本文: | 刘红锐,张开翔,张彬,尹荣,钱晶.一种双超级电容倍压式串联蓄电池系统并行均衡器[J].电力自动化设备,2021,41(10): |
| LIU Hongrui,ZHANG Kaixiang,ZHANG Bin,YIN Rong,QIAN Jing.Parallel equalizer of double supercapacitors voltage doubling battery system[J].Electric Power Automation Equipment,2021,41(10): |
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| 摘要: |
| 传统电容式串行均衡器利用串联单体蓄电池间的电压差实现单体蓄电池间的串行均衡，由于串联单体蓄电池之间电压差小，该均衡器能量均衡效率低、均衡速度慢。为此，提出一种双超级电容倍压式串联蓄电池系统并行均衡器，该均衡器具有以下2种工作模式：多个单体蓄电池并行均衡放电的双超级电容并联储能、多个单体蓄电池并行均衡充电的双超级电容串联释能。所提出的并行均衡策略能够极大地提高均衡速度，同时双电容使电容均衡的储能能力加倍，且均衡性能不受单体蓄电池间电压差小的限制。详细介绍了均衡器结构、工作原理和控制策略。搭建了4个串联锂离子蓄电池均衡器实验平台并设计了样机进行实验，结果证明了所提均衡器的可行性与优越性。 |
| 关键词: 双超级电容 蓄电池 储能 倍压均衡 并行均衡 控制 |
| DOI：10.16081/j.epae.202110040 |
| 分类号:TM912 |
| 基金项目:国家自然科学基金资助项目(51967009,51869007)；云南省教育厅科学研究基金资助项目(2019J0038) |
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| Parallel equalizer of double supercapacitors voltage doubling battery system |
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LIU Hongrui1, ZHANG Kaixiang1, ZHANG Bin1, YIN Rong1, QIAN Jing2
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1.Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China;2.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
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| Abstract: |
| The traditional capacitive serial equalizer uses the voltage difference between series single batteries to realize the serial equilibrium between single batteries. Because the voltage difference between series single batteries is small, the equalizer has low energy equilibrium efficiency and slow equilibrium speed. For this, a parallel equalizer of double supercapacitors voltage doubling battery system is proposed. The equalizer has the following two working modes: parallel energy reserve of double supercapacitors by parallel equalizing discharge of multiple single batteries, and series energy release of double supercapacitors by parallel equalizing charge of multiple single batteries. The proposed parallel equilibrium strategy can greatly improve the equilibrium speed, the energy storage capacity of capacitor equilibrium is doubled through double supercapacitors, and the equilibrium performance is not limited by the small voltage difference between single batteries. The structure, working principle and control strategy of equalizer are introduced in detail. The experimental platform of four series lithium-ion battery equalizer is established and its prototype is designed, and the experimental results prove the feasibility and superiority of the proposed equalizer. |
| Key words: double supercapacitors electric batteries energy storage voltage doubling equilibrium parallel equalization control |
