THERMAL SCIENCE

International Scientific Journal

Haifeng Fang

,

Jin Cao

,

Kanwen Xu

,

Lihua Cai

,

Haoda Wu

,

Qubiao Wu

EFFECT OF LOCALLY ENHANCED HEAT DISSIPATION OF THE POLAR ON LI-ION POWER BATTERIES

ABSTRACT
For the sake of comprehend the influence of locally enhanced heat dissipation of the polar on Li-Ion power batteries, coupling the thermal effect of anode and cathode, the heat generation model of Li-Ion battery with different discharge magnification is obtained. Based on this model, the discharge process simulation analysis of the single battery is carried out and compared with the experimental results. The experiment results show that battery polarity heat effect has great influence on the temperature field distribution of the battery. Then, a locally enhanced heat dissipation structure is set up near the polar region and a comparative experiment is carried out by changing the discharge rate. Although the heat pipe can only slightly improve the discharge capacity of Li-Ion battery by enhancing the heat dissipation capability of polarity, the heat generated under low discharge rate can be reduced by using the heat pipe with low emission rate, the heat generated by the polar region can be effectively and timely exported to reduce the temperature of the polar region and it can greatly reduce the overall temperature of the battery. Then, according to the thermal characteristics and the results of locally enhanced heat dissipation analysis, a new battery module is designed and simulated. The prototype is completed and tested. The results show that this method can effectively reduce the temperature rise and temperature difference of the battery module by using locally enhanced heat dissipation structure. Finally, combined with the simulation and the experimental results, some useful suggestions are put forward for the design and manufacture of battery modules and battery boxes.
KEYWORDS
Li-ion power battery, Battery poles, Locally enhanced heat dissipation, Battery module, heat pipe
PAPER SUBMITTED: 2020-10-16
PAPER REVISED: 2020-11-25
PAPER ACCEPTED: 2020-12-05
PUBLISHED ONLINE: 2021-01-02
DOI REFERENCE: https://doi.org/10.2298/TSCI201016351F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 4, PAGES [2713 - 2729]
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Effect of locally enhanced heat dissipation of the polar on Li-ion power batteries

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence