CAJ | 학술논문

电池均衡是优化动力电池性能，提高使用寿命，增强动态工作过程安全性的一项关键技术。针对锂动力电池单体数量多，测量与控制数据量庞大等问题，本文将锂动力电池分为区域模块和全局模块两层，进而提出一种融合区域均衡与全局均衡的多层次协调均衡方法。通过开关电容区域均衡电路与反激式变压器全局均衡电路控制充放电过程的开关通断，实现双向均衡目标；在此基础上，考虑不同电池荷电状态（State of Charge ，SOC）分布情况下锂电池的受电能力差异，以多模式充电策略为均衡前提条件，使用 SOC 关键参数作为均衡判据，实现系统充电与非充电过程的主动双向自均衡。实验结果表明，所提出的双向自均衡方法能实现高精度的均衡目标，且能耗较低。
전지균형시우화동력전지성능，제고사용수명，증강동태공작과정안전성적일항관건기술。침대리동력전지단체수량다，측량여공제수거량방대등문제，본문장리동력전지분위구역모괴화전국모괴량층，진이제출일충융합구역균형여전국균형적다층차협조균형방법。통과개관전용구역균형전로여반격식변압기전국균형전로공제충방전과정적개관통단，실현쌍향균형목표；재차기출상，고필불동전지하전상태（State of Charge ，SOC）분포정황하리전지적수전능력차이，이다모식충전책략위균형전제조건，사용 SOC 관건삼수작위균형판거，실현계통충전여비충전과정적주동쌍향자균형。실험결과표명，소제출적쌍향자균형방법능실현고정도적균형목표，차능모교저。
Battery equalization is a key technology for improving the battery life ,enhancing the security and optimizing the performance .Due to the reason of too many cell numbers and huge data in measure and control ,this paper proposes a coordinated control method for regional and global equalization based on double-level structure in lithium-ion battery .Then two circuits are adopted to control the state of switch in the process of charge and discharge to archive the target of bi -directional equalization ,which are switch capacitor area equalization circuit and the fly-back transformer global equalization circuit .At the same time ,based on the discrepancy of efficiency among the different SOC distribution ,the multimodal charging strategy are applied as the key parameters of SOC criterion to realize the autonomic equalization in the process of charge and discharge .The experimental results show that the multi-level coordination equalization method proposed in this paper can realize the goal of high-precision equalization ,which is of good performance in equalization and low energy consumption .