STUDY AND DESIGN OF THERMAL MANAGEMENT SYSTEM OF LITHIUM-ION BATTERY MODULE
Date
2023-04
Journal Title
Journal ISSN
Volume Title
Publisher
IOE Pulchowk Campus
Abstract
World is rapidly transforming into the age of Electric Vehicle technology. This
is also associated with green and clean transportation technology. Lithium-ion batteries
are rechargeable energy storage devices used in electrical vehicles due to high power
density, low self-discharge, high efficiency, long life cycle etc. However, there is
change in temperature during the charge/discharge cycle of operation due to heat
generation. And, it is necessary to maintain the temperature of battery within specific
range for the safety and life of the battery by adopting proper thermal management
system. In this project, we aim to study and analyze thermal management systems for
lithium-ion battery modules. For this purpose, we have conducted numerical study of
unit cell module air cooling system using steady state Conjugate Heat Transfer in
ANSYS Fluent 2022R1. Experimental setup is also developed for unit cell module air
cooling. And, comparative study between experimental and numerical solution is
conducted based on cell average temperature. Numerical analysis of 3S3P module air
cooling system is conducted for four different flow channel configurations and varied
velocities for obtaining efficient system. Numerical study of 3S3P module cold plate
liquid cooling system is also conducted with four different flow channel configurations
and varied flow velocities for obtaining suitable cold plate liquid cooling on basis of
cell average temperature and temperature distribution in system. For a unit cell, it is
found that the cell average temperature reaches stable value after certain flow velocity.
There is a decrease in temperature due to an increase in velocity from 0.2 m/s to 4.3m/s
for unit cell module air cooling system. From four different configurations of air
cooling, SIDO configuration has less value of cell average temperature with varied
velocity from response surface analysis and CHT simulation. Average cell temperature
of cobweb type is least for the same coolant inlet velocity among four different liquid
cold plate configurations. It is also found that temperature distribution using cobweb
type cold plate is uniform at lower pressure.
Description
Lithium-ion has a high energy density, more cycle life, and fast-charging
capabilities, but they also produce heat when used. If heat is not adequately dissipated,
it can induce thermal runaway, impair battery performance and lifespan, and even lead
to safety issues like fires and explosions. Battery manufacturers have created several
cooling methods to regulate the heat developed by lithium-ion batteries to address this
issue. A
Keywords
Electric Vehicle technology