Optimum Material Selection for Battery Carrier System in Electric Buses

Abstract

European Union has started to encourage countries to use public transportation in order to reduce air pollution and carbon emissions. Decreasing fossil fuel reserves make energy supply difficult. Vehicle exhaust emissions increase air pollution day by day. In this period when global warming is increasing in the global world, the transition to zero-emission electric vehicle production in public transportation has begun. Electric buses provide a clean, efficient and sustainable transportation alternative to diesel vehicles. One of the most important issues to consider in electric buses is the SoC (State of Charge) value of the battery, which is the range it will get from 0 to 100 when fully charged. Reducing weight in electric buses is one of the factors that increases the range value. For this reason, in the study, finite element analysis was carried out on the currently used battery carrier frame material EN10025 S355JR, alternatively aluminium 6061-T6, aluminium 7075-T6 and carbon fiber reinforced PEEK materials to lighten the vehicle weight. As a result of the analysis, 65.54% and 73.07% lightness were achieved with aluminum 6061-T6 and carbon fiber reinforced PEEK materials, respectively. When the analysis results were compared in terms of cost, manufacturability and lifetime, the most suitability for mass production was evaluated.