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Academic Journal of Engineering and Technology Science, 2020, 3(2); doi: 10.25236/AJETS.2020.030206.

Study on short circuits in power lithiumion batteries based on the radius of lithium branches

Author(s)

Pingqiong Wang, Lingmin Ji

Corresponding Author:
Pingqiong Wang
Affiliation(s)

School of mechanical engineering, Jiangsu University, 212013, Zhenjiang, China
*Email:1423729619@qq.com

Abstract

The growth of lithium crystal is one of the important causes of short circuit in the power lithium-ion battery, which can cause the battery heat to lose control. In this paper, the short circuit that caused by the growth of lithium branches in lithium-ion battery, was studied by using the method of finite element numerical simulation. The characteristics of battery response under the radius of different lithium branches were compared and analyzed. The results show that the inner short circuit will cause the local region to heat up rapidly, and the maximum temperature will have a certain downward trend with time; and with the increase of the radius of lithium branches, the maximum temperature of the battery and the local load value of the negative region will increase, and the local load value of the negative region will be concentrated between 0.6-0.7.

Keywords

lithium crystal; inner short circuit; multiphysics; lithium-ion battery; thermal conduction

Cite This Paper

Pingqiong Wang, Lingmin Ji. Study on short circuits in power lithiumion batteries based on the radius of lithium branches . Academic Journal of Engineering and Technology Science (2020) Vol. 3 Issue 2: 40-47. https://doi.org/10.25236/AJETS.2020.030206.

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