PHEV/EV Li-Ion Battery Second-Use AMMAR SALEEM, MOHAMMAD ANEEQ KHAN, JAREK ROSZKO,

AND NABIL ALIADVISOR-DR. HANA GODRICH

SCHOOL OF ENGINEERING

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.

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

OBJECTIVE

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

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.

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.