1. PHEV/EV Li-Ion Battery Second-Use
AMMAR SALEEM, MOHAMMAD ANEEQ KHAN, JAREK ROSZKO,
AND NABIL ALI
ADVISOR-DR. HANA GODRICH
SCHOOL OF ENGINEERING

2. Lithium ion batteries are one of the widely use rechargeable battery used in the World. Because of
Lithium, the idea of electric cars such as Tesla and Chevy volt became possible. Electric vehicles
(EV’s) and plug-in hybrid electric vehicles (PHEV’s) are gaining popularity in the US and around
the world because they are promoted as environmentally friendly cars. Air pollution, record high
gas prices, and dependence on foreign oil are pushing sales growth of the EV’s and PHEV’s.
Advertisements assure us of “zero emission” and the question asked is no longer “why electric?”,
but “why gasoline?” While most electric car owners consider themselves “green”, the process of
mining for lithium and the production of these batteries in reality is actually a less than “green”
activity. In addition, the recycling process is neither simple nor cheap. Our objective for capstone
design is to utilize retired Lithium ion batteries from EV’s and PHEV’s for reusable Power source
for Residential application.
ABSTRACT
Manufactured &
Installed in
Automobile
Employed in
Automotive
Application
Refurbished &
Installed in
Second Use
Application
Employed in
Second Use
Application
Recycle
Source: Becker, “Electric Cars in the United States: A New Model with Forecasts to 2030”,Google.

3. • To utilize retired Lithium ion batteries from EV’s and PHEV’s for reusable
Power source for Residential application.
OBJECTIVE

4. There are two parts of this project. In first part, which is Hardware, we planned the
layout of the physical Electronic materials, testing and creating the lithium ion battery
banks and Load Circuit. In second part, which is Software, we will be on measuring
and monitoring the Battery bank.
Software design Hardware Design
DESIGN
®
®

5. RESULTS
 We successfully plotted voltage drop across the battery banks and current drawn
from battery banks against the time.
 Using the above measured values, we are able to calculate state of charge of a
battery bank and using the stated of charge we are able to predict state of health
(SOH).
SOH = Ci x 100% Ci= final Capacity
Co Co= initail Capacity
 Our Battery Management System (BMS) demonstrated the idea of using the retired
lithium-ion batteries for secondary usage in residential applications.

6. REFERENCES
• Andrea, Davide. Battery Management Systems for Large
Lithium-ion Battery Packs. Boston: Artech House, 2010. Print.
• Liu, Datong, et al. "Prognostics for state of health
estimation of lithium-ion batteries based on combination
Gaussian process functional regression."
Microelectronics Reliability 53.6 (2013): 832-839.