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Lithium batteries are preferred for electric vehicles due to their high energy density, power output, rechargeability, efficiency, durability, and positive environmental impact. To enhance energy dens...ity of Li-B, electrochemical models are carefully designed after analyzing at changing charging and discharging behaviors to improve the efficiency. However, the complex structure arising from numerous physical parameters hampers better analysis of key battery parameters. This paper presents an electrothermal model in which batter’s dynamic electrical parameters are simulated using Impedance-based Chen and Mora electrical equivalent circuit while thermal characteristics are simulated using the Bernard’s Heat equation. Besides, accurate battery voltage is calculated using voltage compensation offset. Moreover, using the proposed model, the study investigates the impact of different ambient temperatures and charge/discharge rates on battery voltage. Additionally, a semi-empirical model is also proposed here to assesses the lifespan of Li-B by accounting two of the major Capacity Losses i.e., Calendar Loss and Cycle Loss. Similarly, the proposed battery-life-prediction model is also used to analyze behavior of battery parameters under varying temperatures and discharge rates.続きを見る
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