Optimal Experimental Design for Battery Aging Studies - (PPT)

摘要

Presented a method for designing aging experiments to aid in fitting aging models. Demonstrated this method with LiFePO_4 cells. By placing the batteries in different cycling scenarios we observed three distinct aging behaviors: 1. Normal use: these cells age in the "expected" way when considering amp-hours processed. 2. Light use high voltage: these cells age quickly in comparison to amp-hours processed. 3. Light use low voltage: these cells age slower in comparison to amp-hours processed. This method can be readily applied to other battery types and chemistries to develop aging models.