Thermal Characteristics Investigation of Lithium-Ion Battery Under High-Frequency AC Excitation in Low-Temperature Environment

At low operating temperatures, the power capability and charging/discharging capacity of lithium-ion (Li-ion) batteries can decay rapidly. Therefore, it is essential to preheat the Li-ion batteries in advance of the normal operations of a battery electric vehicle. High-frequency ac preheating method...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on transportation electrification 2022-03, Vol.8 (1), p.407-419
Main Authors: Hu, Zhongxiaobang, Li, Yang, Liu, Furong, Zhao, Bo, Li, Weibo, Yang, Ruixin, Xie, Changjun, Shi, Ying
Format: Article
Language:English
Subjects:
Chemical reactions
Circuit design
Electric cells
Electric vehicles
Electric vehicles (EVs)
Excitation
Heat
Heat generation
Heating
Heating rate
Heating systems
high-frequency ac heating
Integrated circuit modeling
Lithium
lithium-ion (Li-ion) batteries
Lithium-ion batteries
low temperature
Low temperature environments
Mathematical models
Operating temperature
Rechargeable batteries
Resistance
Resistance heating
Temperature
thermal characteristics
Topology
Transportation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:At low operating temperatures, the power capability and charging/discharging capacity of lithium-ion (Li-ion) batteries can decay rapidly. Therefore, it is essential to preheat the Li-ion batteries in advance of the normal operations of a battery electric vehicle. High-frequency ac preheating methods are advantageous to achieve a miniaturized and lightweight design. In this article, a self-heating circuit topology is used for studying the characteristics of Li-ion batteries at low temperatures and under high-frequency ac excitation. The thermal behaviors of Li-ion batteries under high-frequency ac excitations are comprehensively analyzed with an improved heat generation model. Experimental results exhibit that heat generation due to electrochemical reactions has a significant influence on self-heating rates under the high-frequency ac excitation, and the heating rate is positively correlated with the current frequency and root-mean-square (rms) value. Specifically, when the current frequency is 90 kHz and the rms value is 3.51 A or 1.17 C, validated by experiment and numerical simulation, a 2.9-Ah 18650 Li-ion cell can be heated up from −20 °C to 5 °C in 7.33 min with an average electrochemical heat generation of 2.962 W.
ISSN:2332-7782
2577-4212
2332-7782
DOI:10.1109/TTE.2021.3113945