锂电池的寿命与插电式混合动力汽车能量控制研究  

Study on the life of lithium battery and the energy control of plug-in hybrid electric vehicle

作　　者：刘冬梅[1] 王红[1] LIU Dong-mei;WANG Hong(School Of Automotive Engineer,Shaanxi College Of Communication Technology,Xi'an Shaanxi 710019,China)

机构地区：[1]陕西交通职业技术学院汽车工程学院

出　　处：《粘接》2019年第9期97-101,共5页Adhesion

摘　　要：较科学的插电式动力系统能量控制大致分为电量消耗与电量维持两阶段,锂电池循环工作是其摆脱电量维持阶段的前提,科学与有效使用锂电池十分重要。在生命周期内,锂电池会受到充放电倍率、放电深度、环境温度以及充放电截止电压等多种因素的影响,它们会在一定程度上造成锂电池性能的衰减,进而影响插电式混合动力汽车整车的经济性。基于电池组正常驱动、科学分配发动机与锂电池之间的能量流动等前提,文章对考虑锂电池寿命的能量控制策略进行研究,策略的制定需要考虑锂电池放电最大限制功率、放电下限值以及发动机定点功率。The scientific plug-in hybrid energy control can be roughly divided into two stages: charge-depleting and charge-sustaining,lithium battery’s duty-cycle operation can help it get rid of charge-sustaining stage,using lithium battery scientifically and effectively is very important. In its life cycle,lithium battery can be influenced by charge C-rate,discharge depth,environment temperature,charge/discharge cut-off voltage and other factors, they will cause the performance degradation of lithium batteries to a certain extent,and then affect the economy of plug-in hybrid electric vehicles.Based on the premise of normal driving of the battery pack and scientific distribution of energy flow between the engine and the lithium battery, the paper studies the energy control strategy considering the life of the lithium battery. Strategies’formulation should consider lithium battery’s maximum discharge limit power,discharge limit and engine electric power.

关 键 词：插电式混合动力汽车 锂电池寿命 性能衰竭 能量控制 

分 类 号：U469.72[机械工程—车辆工程]