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Preliminary Study of Lithium-Ion Battery Pulsed Power
Lateef Taiwo, Biju Shrestha (PhD Candidate), P. Novak (PhD Candidate), and David Wetz, Ph.D
Department of Electrical Engineering, The University of Texas at Arlington, Arlington, Texas 76019
Abstract
Electrochemical energy storage devices have been developed
and used widely to power portable applications. Lithium-ion
batteries are extremely popular for use in portable devices as a
result of their high energy density. Lithium ion batteries are being
investigated for pulsed power applications.
Pulsed Charging
 Pulsed charging of an electrochemical cell is
performed by supplying a high current in a PWM
(pulsed width modulated) fashion with 15-s-long
and 325-A pulsed currents were fed into the cell
with a 30-s delay between pulses
 Pulsed charging is performed to recharge the
battery quickly
 The effect of the ageing on the electrochemical
cell due to pulsed charging is being studied
 Commercial cycler from MACCOR is used to
perform a pulsed charging
Experimental Setup
Summary

Study the feasibility of using lithium ion battery for
powering the pulsed load

Custom stand is built to match the load profile of pulsed
load which can handle the current up to 10kA and a
switching frequency up to 10kHz

LabVIEW is extensively used to record the data
CAD Drawing of Stand [2]
Introduction
Pulsed power technology is use to accumulate energy over a relatively
long period of time and releasing it very quickly, thus increasing the
instantaneous power. Pulsed power technologies in general, are
characterized by the concentration of energy, both in time and space,
to pulses of high intensity. However, this presentation will focus on
pulsed power applications, pulse charging and discharging of lithiumion battery, and using LabVIEW software tools to monitor and record
data.
References
[1]
Current and voltage recorded during the elevated pulsed
recharge of an 18-Ah GAIA LIB [1]
Pulsed Power Applications
 Compact Marx Generators
 It is an electric circuit that generates a high-voltage pulse by
charging a number of capacitors in parallel, then suddenly
connecting them in series.
 Marx generators are often used to simulate the effects of lightning
on power line gear and aviation equipment.
[2]
Experimental Stand and Data Acquisition System
Pulsed Discharging
 Pulsed discharge of an electrochemical cell is
performed by discharging the cell at high current rate up
to 1.1kA in a PWM fashion.
 Pulsed discharge is performed to mimic the behavior at
which the pulsed power device consumes energy
 The effect of the ageing on the electrochemical cell due
to pulsed discharging is being studied
 Custom built stand is used to perform pulsed discharge
LabVIEW Software
 LabVIEW is a graphical programming platform that helps engineers
scale from design to test and from small to large systems.
 It is used to generate different types of pulsed load profile by
controlling the switches of the custom built stand.
 It is used for recording a data like voltage, current, and temperature
during pulsed discharge and pulsed charging.
 Sample interface is shown in which the pulse width, sampling rate,
duty cycle, and discharge time.
 Electromagnetic Launchers
Wetz, D.A.; Shrestha, B.; Novak, P.M., "Elevated Rate
Cycling of High-Power Electrochemical Energy
Storage Devices for Use as the Prime Power Source
of an EM Launcher," Plasma Science, IEEE
Transactions on , vol.41, no.5, pp.1319,1325, May 2013
Shrestha, B.; Wetz, D.A.; Novak, P.M., "Pulsed
Elevated Rate Discharge of Electrochemical Energy
Storage Devices," Plasma Science, IEEE Transactions
on , vol.40, no.10, pp.2462,2469, Oct. 2012
Acknowledgments
I thank Dr. Wetz David for giving me the opportunity to work in his
lab. Also, I thank Biju Shrestha and Greg Turner for being a great
mentor. Funding for this project was provided by NSF grant # EEC1156801.
Front Panel Switch Control
For Further Information
 It is useful to consider the relationship between the charging time
to transfer energy from the power supply to the launcher and the
launch time
 EML batteries must be able to source pulsed currents at rates
much higher than their continuous C rating.
Current Extracted During Pulsed Discharge [1]
Please contact [email protected]. More information on this and
related projects can be obtained at:
https://wiki.uta.edu/display/PPELab/Home