Comparative Analysis of DC Fast Charging Techniques for Lithium-Ion Batteries in Electric Vehicle Applications

Lithium-ion batteries are essential to electric vehicle technology due to their high energy density and extended cycle life. As the market for electric vehicle advances, efficient and rapid charging alternatives are crucial for raising adoption rates. DC fast charging is now a feasible alternative due to its faster charging times than traditional AC charging methods. This study looks at several DC fast charging technologies, including as multi-level converter-based systems, conventional direct current fast charging, and innovative methods like wireless charging. This study compares various DC fast charging techniques for lithium-ion batteries utilized for electric vehicle applications. Every method is assessed according to its effect on battery lifespan, cost-effectiveness, efficiency, charging speed, and compatibility with current EV infrastructure. The difficulties that each strategy faces such as grid load, thermal management, and compatibility with various battery chemistries are highlighted in the paper. The results shed light on how to best optimize DC fast charging methods and offer helpful recommendations for the creation of next-generation EV fast-charging infrastructure.