基于SVD-SAE-GPR的锂离子电池RUL预测

董渊昌, 庞晓琼, 贾建芳, 史元浩, 温杰, 李笑, 张鑫

Remaining useful life prediction of lithium-ion batteries based on SVD-SAE-GPR

Yuanchang DONG, Xiaoqiong PANG, Jianfang JIA, Yuanhao SHI, Jie WEN, Xiao LI, Xin ZHANG

表1 四个电池15个潜在HIs与容量的Spearman相关分析

Table 1 Spearman correlation analysis of 15 potential HIs and capacity of four batteries

特征提取对象 HIs Spearman相关系数 B0005 B0006 B0007 B0018 放电电压 HI1 0.9943 0.9982 0.9953 0.9876 放电电流 HI2 0.9873 0.9986 0.9949 0.9888 放电温度 HI3 0.8118 0.6690 0.8864 0.9688 放电负载电压 HI4 0.9953 0.9986 0.9945 0.9917 放电负载电流 HI5 0.9870 0.9987 0.9945 0.9892 放电数据测量时间 HI6 0.9972 0.9976 0.9951 0.9929 充电电压 HI7 -0.3348 -0.3289 -0.3518 0.9707 充电电流 HI8 0.9908 0.9908 0.9912 0.9734 充电温度 HI9 -0.2286 -0.2668 -0.2123 0.9567 充电负载电压 HI10 -0.3144 -0.3237 -0.5934 0.9634 充电负载电流 HI11 0.9908 0.9907 0.9913 0.9734 充电数据测量时间 HI12 -0.3560 -0.3241 -0.3674 0.9349 dQ/dV HI13 0.9975 0.9990 0.9959 0.9949 dV/dQ HI14 -0.5057 -0.7387 -0.3497 0.6355 dT/dV HI15 0.9833 0.9871 0.9730 0.9929