摘要
提出基于一阶RC等效电路模型和电压限制的二维插值动力电池功率状态(SOP)估计方法,并采用HPPC试验对模型进行标定和验证,形成以电池实际充/放电容量和工作温度为变量的电池充/放电峰值功率二维插值表,实现电池SOP的在线估计。结果表明,采用一阶RC模型表征锂离子电池较为精确,采用二维插值在线估计SOP的方法的计算工作量较小。
This paper proposes a battery state of power (SOP) estimation method with second-order interpolation. The method is based on the first-order RC equivalent circuit and the SOP calculation method of voltage limitation, and the HPPC test is used to calibrate and verify the model. Based on the two-dimensional interpolation of battery charge and discharge capacity, and operating temperature, the peak charge and discharge power is obtained, the online SOP estimation is realized. The model is verified by HPPC test. Results show that the first-order RC model can characterize the Li-ion battery with high accuracy and the two-dimensional interpolation SOP estimation method has small computational complexity.
作者
金鑫娜
顾启蒙
潘宇巍
华旸
JIN Xin-na;GU Qi-meng;PAN Yu-wei;HUA Yang(School of Transportation Science and Engineering,Beihang University,Beijing 100083,China)
出处
《电源技术》
CAS
北大核心
2019年第9期1448-1452,共5页
Chinese Journal of Power Sources
基金
国家重点研发计划“新能源汽车”重点专项(2016YFB0100300)
关键词
锂离子电池
RC等效电路
SOP估计
二维插值
Li-ion battery
RC equivalent circuit
SOP estimation
two-dimensional interpolation
