Faculty Scholarly Dissemination Grants

Utilizing Repurposed Automotive Lithium Ion Cells for Stationary Energy Storage

Department

School of Engineering

College

Padnos College of Engineering and Computing

Date Range

2014-2015

Disciplines

Engineering

Abstract

Due to the nature of the battery chemistry, most automotive Li-ion battery packs will need to be replaced after approximately 10 years of service. After that time, they are no longer suitable for their original application, but most will have approximately 80% of their energy storage capacity remaining. Based on sales over the last few years (and future projections), battery packs will start coming out of vehicles in large quantities around 2020. These cells are suitable for repurposing applications. To demonstrate the effectiveness of repurposing automotive Li-ion cells, a small stationary energy storage system was constructed that could easily have more cells added to power essential appliances in a small home. Data collection capabilities of the system enable it to be used for testing of multiple types of cells or modules. Such information is crucial for the development of a cell repurposing program. The constructed energy storage system was used to demonstrate grouped cell characteristics, as well as Battery Management System functionality. The basis of this work can be expanded and used for different Li-Ion cells, while providing a stepping stone towards the construction of a larger system for a stationary energy storage application. Adequate monitoring and battery management can be obtained through the implementation of an off-the-shelf system, or with the original manufacturers monitoring system if it is thoroughly understood.

Conference Name

2015 ASEE NORTH CENTRAL SECTION CONFERENCE

Conference Location

Cincinnati, OH

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