Simulation and verification of lithium-ion battery temperature changing process

doi:10.12028/j.issn.2095-4239.2018.0003

Abstract

Abstract: To investigate the temperature-variation of the soft package lithium-ion battery during discharge, based on the basic heat generation model, through internal resistance test and temperature rise experiment under 0.5 C discharge, the transient heat rate curve is calculated and entropy coefficient is obtained. A transient thermal model can be established and the heating rate varies with the depth of discharge changing. The temperature variation was simulated by using this model and compared with the experiment. It shows that the simulation results are consistent with the experiment. This model can simulate the battery temperature change process under different discharge ratio very well, which has guiding mean for the battery temperature variation analysis and the thermal management.

Key words: lithium-ion battery, thermal characteristic, entropy coefficient, temperature variation

CLC Number:

TM911

MA Long, WEN Hua. Simulation and verification of lithium-ion battery temperature changing process[J]. Energy Storage Science and Technology, 2018, 7(4): 712-717.

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