Development of fast and hybrid charger for lithium ion batteries in light weight electric vehicles,International Transactions on Electrical Energy Systems

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Development of fast and hybrid charger for lithium ion batteries in light weight electric vehicles
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2021-05-17 , DOI: 10.1002/2050-7038.12932
M. Sabarimuthu ₁ , N. Senthilnathan ₁

Affiliation

This paper introduces a battery charging circuit, which utilizes solar and grid power for charging lightweight electric vehicles. The novelty of the proposed approach is the development of hybrid charger with control algorithm that charges the electric vehicle battery using dual input power. This hybrid charging provides electricity to start the electrically powered vehicle and also powers the additional vehicle. The controller can act as fast charger by closed loop operation with battery parameters as input. The speed of the charge level is varied based on the state of charge (SOC) of battery and parameters detected from battery side. Battery state estimation is defined through adopted battery model and their precision affects the accuracy of state estimation. Micro controller acts as a smart charger that controls the parameter of voltage and current level for battery charging. Battery output performance, voltage, and current variation in battery simulator during stage 1 to 2 charging level, current variation during stage 1 to 2 and stage 2 to 3 charging level by simulation and experimental results are also exhibited in the proposed work. Average power usage for conventional charger with proposed one during day and night time was compared. Time taken to reach 100% SOC for conventional charger with proposed system, probability of battery capacity, energy demand of charging station, effects of charging and discharging of battery, and charging capacity and temperature of battery is also further studied. The result analysis part proves that the proposed strategy shown to be superior to its existing methodologies.

中文翻译：

轻量化电动汽车锂离子电池快速混合充电器的研制

本文介绍了一种利用太阳能和电网为轻型电动汽车充电的电池充电电路。所提出方法的新颖之处在于开发了具有控制算法的混合充电器，该算法使用双输入电源为电动汽车电池充电。这种混合充电提供电力以启动电动车辆并为附加车辆提供动力。控制器可以通过以电池参数为输入的闭环操作作为快速充电器。充电水平的速度根据电池的充电状态 (SOC) 和从电池侧检测到的参数而变化。电池状态估计是通过采用的电池模型定义的，其精度影响状态估计的准确性。微控制器充当智能充电器，控制电池充电的电压和电流水平参数。拟议工作中还展示了电池模拟器在第 1 至第 2 阶段充电水平期间的电池输出性能、电压和电流变化、第 1 至第 2 阶段和第 2 至第 3 阶段充电水平期间的电流变化和实验结果。比较了传统充电器与建议充电器在白天和夜间的平均功率使用情况。还进一步研究了采用所提出系统的常规充电器达到 100% SOC 所需的时间、电池容量的概率、充电站的能量需求、电池充放电的影响以及电池的充电容量和温度。

更新日期：2021-07-02

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