Mass-Spring-Damping Theory Based Equivalent Mechanical Model for Cylindrical Lithium-ion Batteries under Mechanical Abuse

Chinese Journal of Mechanical Engineering

Table 6 Relative error and correlation coefficient R² among equivalent model, cubic fitting equation and experiment

SOC	0	0.2	0.4	0.5	0.6	0.8
Relative error between equivalent model and experiment (%)	6.89	10.10	7.69	3.63	6.49	5.72
Correlation coefficient between equivalent model and experiment	0.9985	0.9976	0.9981	0.9993	0.9977	0.9993
Relative error between cubic fitting equation and experiment (%)	24.43	23.56	18.15	24.23	27.74	27.78