锂电池寿命与整车节能双目标优化的FCEV能量管理策略  

A Power Management Strategy for FCEV Based on Two-object Optimization of Lithium Battery Lifetime and Vehicle Energy Conservation

作　　者：杜鹏英 李静 陈慧 DU Pengying;LI Jing;CHEN Hui(School of Information and Electrical Engineering,Zhejiang University City College,Hangzhou 310015,China)

机构地区：[1]浙大城市学院信电学院,杭州310015

出　　处：《实验室研究与探索》2021年第12期120-125,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(NSFC 51907175);浙江省自然科学基金项目(Y21F030010)。

摘　　要：针对氢燃料电池和锂电池混合动力车(FCEV),提出一种新的能量分配策略。该策略将规则与双目标优化相结合,在全局范围内,以电动机需求功率和锂电池的SoC值为输入量,制订总体规则;在燃料电池和锂电池同时工作的区间内,提出一种包含整车效率和锂电池寿命指数的最优化指标,采用模式搜索法,得出二者功率的分配结果。仿真结果表明,在效率相差不大的情况下,使锂电池寿命指数提高了5%,降低了系统总成本和对环境的污染。该算法为FCEV能量管理提供了一种新的优化方法。另外,还提出将驾驶员意图解释为车辆需求速度,仿真结果表明,该解释方法使车辆行驶更平稳、更符合行车意图。A new power management strategy is proposed for fuel cell/lithium battery HEV(FCEV).The strategy adopts bi-objective optimization combined with rules of thumb.In the globe scope,based on motor demanded power and SoC value of lithium battery for input quantity,general rulesare formulated.In partial sections a multi-objective optimization target function is put forward,including the system efficiency and lithium battery life index,and the power distribution results between FC and Li battery are obtained based on pattern search method.The simulation results show that the proposed strategy makes the lithium battery life improve by 5%so that the system cost and environmental pollution is reduced.This algorithm provides a new good way for HEV energy management.In addition,driving intention is directly interpreted as vehicle demand speed so that the vehicle travel is more stable and suitable with driving intention.

关 键 词：能量管理策略 氢燃料电池和锂电池混合动力车 多目标优化 车速控制 

分 类 号：TK01[动力工程及工程热物理]