摘要
为提高车载锂电池的充电速度及充电效率,提出了一种用于恒压恒流充电(CCCV)的三段优化法。在“新一代汽车合作计划(PNGV)”电池充电模型的基础上,结合电池容量衰减过程对三段优化法进行修正;以极化电压和开路电压,来修正恒流恒压过程的控制对象,使电流、电压随着电池的实际充电状态实时变化。基于嵌入式芯片STM32F103开发平台,设计了实施方案。进行了4组不同充电方法的实验。结果表明:对比其他3组充电方法,该三段优化法可使充电效率提高到94.25%,且充电时间可达900 s,锂电池容量衰减值较未优化前下降45%。因此,该快速充电方法效果良好。
A three-stage optimization method was proposed for constant current constant voltage(CCCV)charging to improve the charging speed and the charging efficiency of on-board lithium batteries.The threestage optimization method was modified based on the battery charging model of the Next Generation Automotive Cooperation Program(PNGV).The polarization voltage and the open circuit voltage were used to correct the control object in the constant current and constant voltage process,so that the current and voltage change in real time with the actual state of charge of the battery.An implementation scheme was designed on an embedded chip STM32F103 platform.Experiments with 4 different charging methods were performed.The results show that compared with the other three charging methods,the three-stage optimization method can increase the charging efficiency to 94.25%,and the charging time can reach 900 s,and the battery capacity attenuation value is reduced by 45%compared with the un-optimized.Therefore,the method has a good fast charging effect.
作者
陈德海
邹争明
王超
华铭
CHEN Dehai;ZOU Zhengming;WANG Chao;HUA Ming(School of Electrical Engineering and Automation,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《汽车安全与节能学报》
CAS
CSCD
2019年第3期383-390,共8页
Journal of Automotive Safety and Energy
基金
江西省自然科学基金资助项目(20151BAB206034)
