The Journey of an EV’s Heart: Understanding Battery Aging

exter Energy
2 min readNov 8, 2023

Introduction:

Electric vehicles (EVs), which provide a greener, more sustainable type of mobility, have made great progress in changing the automotive environment. But the battery, which powers an EV, ages with time, just like every other component of a car. We will go deeply into the idea of battery ageing in electric vehicles and examine the contributing variables in this post.

1. Understanding Battery Aging:

Battery aging refers to the gradual loss of a lithium-ion battery’s capacity and performance over time. In an EV, the battery is a critical component that stores and provides power for the vehicle’s electric motor. As the battery ages, its ability to hold a charge diminishes, leading to a decrease in driving range and overall performance.

2. Factors Influencing Battery Aging:

A. Temperature: Extreme temperatures, whether too hot or too cold, can accelerate battery aging. High temperatures can cause chemical reactions that break down the battery materials, while cold temperatures can slow down these reactions, but also reduce performance temporarily.

B. Charging and Discharging Cycles: The number of times a battery is charged and discharged, also known as cycles, affects its lifespan. Deep discharges and rapid charges can lead to faster aging.

C. State of Charge (SoC): Keeping the battery at high or low states of charge for extended periods can be detrimental. Storing a battery at a high SoC can cause stress on the battery, while keeping it at a low SoC can lead to capacity loss.

D. Current and Power Levels: High levels of current or power drawn from the battery can generate more heat, which accelerates aging. This is why aggressive driving or frequent fast charging can impact the battery’s health.

3. Battery Management Systems (BMS):

Battery management systems in modern EVs help mitigate the effects of aging. They monitor and manage factors like temperature, SoC, and current levels to optimize battery performance and longevity.

4. Extending Battery Life:

To prolong the life of your EV’s battery, consider these tips:

A. Moderate Temperature: Park your EV in a shaded area during hot summers and avoid exposing it towards extreme cold.

B. Manage Charging Habits: opt for slow or level 2 charging whenever possible. Avoid frequent deep discharges and high-speed charging unless necessary.

C. Avoid Prolonged High or Low SoC: Keep your battery’s state of charge between 20% and 80% for regular use.

D. Regular Maintenance: Follow the manufacturer’s maintenance recommendations for your specific EV model.

Conclusion:

An inevitable part of owning an EV is battery ageing. Nonetheless, the battery life of an electric vehicle can be greatly increased by comprehending the aspects impacting it and using excellent practices. Future EVs should have batteries that are increasingly more resilient and long-lasting as technology develops, increasing their allure as environmentally friendly vehicles.

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