International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 02 | Feb 2025
p-ISSN: 2395-0072
www.irjet.net
Electric Vehicle Charging Technique for Enhanced Battery
Longevity
Nagendra K1, Dr B. Mahesh Babu2 1P.G Scholar, Seshadri Rao Gudlavalleru Engineering College, 2Asso Professor, Seshadri Rao Gudlavalleru Engineering College.
--------------------------------------------------------------------------***----------------------------------------------------------------------Abstract - The lithium-ion battery represents the most significant expense in electric vehicles (EVs). Enhancing battery
performance is crucial for advancing the EV market because it extends battery life, lowers ownership costs, and builds consumer confidence in the product. This paper explores a strategy for improving battery performance that not only prolongs its lifespan but also boosts its storage capacity. We focus on identifying the optimal charging profile for an EV battery by determining when the battery is most receptive to charging and devising a profile that minimizes the impact on its longevity. The analysis reveals that incorporating rest periods during the charging process can effectively reduce battery degradation in two key ways. Firstly, it mitigates the rate of change in the internal resistance of the battery. Secondly, it decelerates the capacity fade over time. Additionally, this approach helps maintain a lower average temperature during charging, further contributing to battery health.
Key Words: Battery internal resistance, Battery charger, capacity fade, electric vehicle, lithium-ion battery.
1. INTRODUCTION Technology has evolved rapidly over the past century, leading to profound changes on our planet. One of the main concerns has been the rise in pollution and climate change. Traditional vehicles rely heavily on fossil fuels, contributing significantly to environmental degradation and climate issues. As a result, there's a growing interest in transitioning to electric vehicles (EVs) . However, this shift faces challenges, mainly due to the higher costs associated with EVs, which are largely influenced by battery technology and their overall lifespan . To address these challenges, extensive research is underway further, Lawson found that introducing rest periods during battery discharge could enhance battery longevity. Additionally, implementing rest periods during charging could extend the cycle life of alkaline batteries by lessening plating effects , although this strategy has not yet been applied to lithium batteries. The newly proposed method outlines an enhanced charging profile for electric vehicle (EV) batteries, which achieves charging with less battery degradation while minimizing heat effects that can harm battery health. Electric Vehicle (EV)
Battery Management System (BMS)
Charging Technique (80-90% SOC)
Battery Health Monitoring & Smart Charging
Charging Method (Level 2 or Slow)
Temperature Control (Moderate Range)
Power Source (AC)
Heat Management & Cooldown system
or (DC Fast)
EV Battery (Lithium-Ion)
Vehicle-to-Grid (V2G) Power flow (Grid or EV) Power Grid / Energy from Fossil fuels
Fig 1: Block Diagram
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