Modeling Battery Aging Through High-Current Incremental Capacity Features in Fast Charge Cycling
摘要
In this work, the area under the peak on the high-current incremental capacity curve is proposed as a capacity indicator in a multistep fast charging scenario. The study is conducted over 94 batteries from a publicly available dataset from the Toyota research institute, including the data of batteries cycled under fast charging conditions with one- or two-step fast constant-current charge phases up to 80% state of charge, followed by a 1C charge until complete charge. A logarithmic model with two fitting parameters is proposed to represent the capacity versus peak area relationship.