Numerical Study of Battery Thermal Runaway Propagation Using PCM for Thermal Management

In order to clarify the relationship between thermal runaway propagation rate and material properties in thermal management of PCM materials. Lattice Boltzmann method was used to calculate the propagation characteristics of thermal runaway under different phase change material characteristics by 18650-lithium ion battery module. The results show that the latent heat change of the phase change material has no obvious effect on the thermal runaway. The thermal runaway time between the modules in the module decreases first and then increases with the increase of the thermal conductivity. The conclusion provides a reference for the optimization of thermal management of power battery module. © 2019, Science Press. All right reserved.