摘要
为了解电动汽车并联动力电池组放电电压混沌机理,掌握电池组放电非线性规律,为电池组放电机理研究提供理论依据,改善电池组均衡与电池组差异故障预警的经验性与盲目性。构建并联电池组模型,并进行电池组实验验证;基于混沌理论,对并联电池组放电电压混沌规律研究,发现动力电池会发生混沌现象,但不会发生超混沌现象;混沌是由电池短时效应引起;混沌行为对动力电池系统产生负面性影响,理论上需抑制;并联电池组放电混沌行为发生时间受电池组不一致引发的原因影响,引发不一致的原因不同,并联电池组均衡和电池差异故障预警处理的优先级也不同。
To understand the discharge voltage chaos mechanism of the parallel battery pack of electric vehicles,master the non-linear law of discharge,provide theoretical basis for the study of battery discharge mechanism and improve the experience and blindness of the battery pack equalization and difference fault warning,we established a model for parallel battery pack and verified it by experiments.Based on the chaos theory,the chaotic rules of discharge voltage of parallel battery pack were studied.The following conclusions can be drawn:the chaotic phenomenon can be occurred in the power battery,but not the hyperchaotic phenomenon;The chaotic condition is caused by the short-term effect of the battery;The chaotic behavior has a negative effect on the battery system which is needed to be suppressedtheoretically,and thechaotic occurrence time during the discharge of parallel battery pack is affected by the cause of the battery packinconsistent;The priority of parallel battery equalization and battery difference fault warning is different because of different reasons.
作者
冯镇
马建
蹇小平
FENG Zhen;MA Jian;JIAN Xiao-ping(Chang'an University,Xi'an Shaanxi 710064,China)
出处
《计算机仿真》
2024年第1期160-165,共6页
Computer Simulation
基金
国家重点研发计划资助项目(2019YFB1600800)
中央高校基本科研业务费专项资金项目(300102222503)。
关键词
并联电池组
放电电压
混沌理论
放电非线性规律
Parallel battery pack
Discharge voltage
Chaos theory
Nonlinear law of discharge
