| 引用本文: | 程俊,曲妍,李媛,郎斌,肖先勇.基于剩余电量估计的电池组充放电均衡策略[J].电力系统保护与控制,2020,48(3):122-129.[点击复制] |
| CHENG Jun,QU Yan,LI Yuan,LANG Bin,XIAO Xianyong.Charge and discharge equalization strategy for battery packs based on remaining capacity estimation[J].Power System Protection and Control,2020,48(3):122-129[点击复制] |
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| 摘要: |
| 为了实现充放电过程中各单体电池电量的均衡，同时降低均衡过程中的损耗，提出了一种基于剩余容量估计的电池组充放电均衡策略。不同于传统的基于SOC估计的均衡策略，该策略以电池单体的剩余电量为均衡目标。将该策略与传统的均衡策略进行比较，计算结果证明在一定的前提下，所提出的策略能够减少均衡过程中转移的总电荷量，从而降低损耗。分别采用所提出的均衡策略和基于SOC估计的均衡策略对三个串联的锂离子电池进行充放电的仿真，结果证明所提出的策略不仅能够在充放电结束时实现单体电池间的均衡，而且能够降低损耗。 |
| 关键词: 电池 剩余电量 均衡策略 转移电荷量 损耗 |
| DOI：10.19783/j.cnki.pspc.190330 |
| 投稿时间：2019-03-25修订日期：2019-06-01 |
| 基金项目:国家自然科学基金项目资助(51707126);国家电网科技项目资助(SGLNDK00DWJS1800020) |
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| Charge and discharge equalization strategy for battery packs based on remaining capacity estimation |
| CHENG Jun,QU Yan,LI Yuan,LANG Bin,XIAO Xianyong |
| (School of Electrical Engineering, Sichuan University, Chengdu 610065, China;State Grid Liaoning Electric Power Company Limited, Shenyang 110006, China;State Grid Shenyang Power Supply Company, Shenyang 110006, China) |
| Abstract: |
| In order to balance the capacity of battery cells in charging and discharging process and reduce the loss during equalization process, a charge and discharge equalization strategy for battery packs based on remaining capacity estimation is proposed. Different from traditional equalization strategies based on State Of Charge (SOC) estimation, this strategy uses the remaining capacity of battery cells as equilibrium target. Comparing this strategy with traditional equalization strategy, the calculation results show that under certain premise, the proposed strategy can reduce the total amount of charge transferred during the equilibrium process, thus reducing the loss. The charging and discharging simulations of three serially connected lithium-ion batteries using the proposed equalization strategy and the SOC estimation based equalization strategy have been carried out respectively. The results show that the proposed strategy can not only achieve balance among battery cells at the end of charge and discharge, but also reduce the energy loss. This work is supported by National Natural Science Foundation of China (No. 51707126) and Science and Technology Project of State Grid Corporation of China (No. SGLNDK00DWJS1800020). |
| Key words: battery remaining capacity equalization strategy transferred charge energy loss |
