Over the past several years, the automotive industry has developed various approaches to improve fuel economy through electrification of vehicle drive-trains. Almost all recent market forecasts indicate a high sales potential for vehicles with a start‒stop system, as a simple and inexpensive solution that can achieve reductions in carbon dioxide emissions and increases in fuel economy, while the electric system and the size of the vehicle remain for the most part unchanged. To promote advanced lead‒acid technology with the North American automakers, the Advanced Lead-Acid Battery Consortium (ALABC) has assisted in organizing a project with the US Department of Energy (U.S. DoE), through its Idaho National Laboratory (INL), to baseline the progress made in lead‒acid batteries over the past decade. The project utilizes a testing process that is aimed at analyzing ‘gaps’ between current lead‒acid battery performance and the end-of-life characteristics targeted by the U.S. DoE and the North American vehicle manufacturers through the US Advanced Battery Consortium (USABC). At the end of 2013, the USABC issued its Battery Test Manual for 12-Volt Start‒Stop Vehicles. Experience with conducting the following tests from the Test Manual will be presented: Capacity Test; Constant Power Discharge and Charge Test; Low Current Hybrid Pulse Power Characterization (HPPC) Test ; Self-Discharge Test; Cold Cranking Test; Cycle Life Test. Whereas these procedures are based on lithium batteries, issues emanating from their application specifically to lead‒acid batteries will be the focus of presentation.
Sally (Xiaolei) Sun
Electric Applications Incorporated
Director, Technology Development
Biography: Dr. Sun gained her PhD degree in Chemical Engineering from North Carolina State University. Her subsequent career has spanned research into a broad range of Renewable Energy and Clean Fuels —from hydrogasification and biofuels to hydrogen fuel cell vehicles and coal-to-liquid processes. Currently, she directs battery testing conducted by Electric Applications Incorporated, ands also develops strategies and tactics for the development of business for the company.