磷酸铁锂电池内阻分量快速检测方法
潘斌,董栋,钱东培,钮树强,刘双宇,姜银珠

Quick identification of internal resistance components for lithium ion battery with LiFePO4 cathode
Bin PAN,Dong DONG,Dong-pei QIAN,Shu-qiang NIU,Shuang-yu LIU,Yin-zhu JIANG
表 1 不同荷电状态下电池电化学阻抗参数拟合结果
Tab.1 EIS parameters of cell with different SOC
SOC Ro /mΩ Cct /F Rct /mΩ τ /ms
1 60.09 2.68 20.69 55.45
5/6 59.77 1.51 14.00 21.07
4/6 63.35 1.49 11.50 17.08
3/6 60.82 1.38 13.34 18.40
2/6 60.28 1.38 13.47 18.55
1/6 60.36 1.23 12.67 15.63
0 60.60 2.58 26.70 68.88