混合动力汽车用电池包结构分析及改进
2017-09-07周一丹陈小丹颜认周陈全储爱华
周一丹 陈小丹 颜认 周陈全 储爱华



摘 要: 动力电池是混合动力汽车的主要储能元件,对整车的性能具有重要影响。而电池包作为电池模组的载体,则起着保护电池模组正常、安全工作的关键作用,其结构强度是否可靠直接影响整车的安全性。以某混合动力汽车用电池包为研究对象,建立其三维有限元模型,通过Abaqus软件分析电池包结构在6种典型工况下的应力及位移分布情况。基于强度分析结果对电池包结构进行改进设计。仿真结果表明,改进后的电池包结构强度满足混合动力汽车对电池包的强度要求,为电池包产品结构的定型设计提供理论依据。
关键词: 混合动力汽车; 电池包结构; 强度分析; 设计改进
中图分类号: TN948.2?34; TH122 文献标识码: A 文章编号: 1004?373X(2017)16?0170?04
Abstract: The power battery is the main energy storage element of hybrid power vehicle, and has an important influence on the vehicle performance. As the carrier of the battery module, the battery pack plays a key role in protecting the normal and safe operation of the battery module, and the reliability of its structure strength affects on the safety of the vehicle directly. The battery pack of a certain type of hybrid power vehicle is taken as the research object to establish its three?dimensional finite element model. The stress and displacement distribution of the battery pack structure under 6 typical working conditions are analyzed with Abaqus software. On the basis of strength analysis results, the improvement design of the battery pack structure was carried out. The simulation results show that the improved structure strength of the battery pack can meet the strength requirement of hybrid power vehicle for battery pack, and provides a theoretical basis for the design type of the battery pack structure.
Keywords: hybrid power vehicle; battery pack structure; strength analysis; design improvement
0 引 言
在传统的内燃机汽车向新能源汽车发展的过程中,混合动力汽车作为一种过渡车型,因具有污染小、油耗低、动力性强等优势,获得了越来越广泛的应用[1?2]。动力电池作为混合动力汽车的储能元件,对整车动力性及燃油经济性有着重要影响。电池包作为电池模组的载体结构,除了支撑整个电池集成系统,更起着保证电池模组正常、安全可靠工作的关键作用[3?4]。由于整车运行工况的复杂性,文中从6种典型工况出发,运用有限元计算方法对电池包在典型工况下的应力和位移情况进行仿真分析,并根据分析结果对所设计的电池包结构提出改进方案,在工程应用方面具有重要的意义。……
