Analysis of Lithium Iron Phosphate Battery Aging in Public Transport Electric Buses

Abstract

The electrification of public transport is a globally growing field, presenting many challenges such as battery sizing, trip scheduling, and charging costs. The focus of this paper is the critical aspect of battery aging in Lithium-ion cells for electric buses. Common approaches used to model battery aging are reviewed, considering internal aging mechanisms. Two popular aging mechanisms are discussed to reveal the limitations in simpler models found in the literature. It is found that there is a need to strike a balance between complexity and accuracy when modeling battery aging. Additionally, insights are provided for effectively modeling battery aging in public transport electric buses.