Battery Life in Electric Vehicles — Lesson 2

This lesson covers the crucial parameters that define the life of a battery in an electric vehicle. It delves into the concept of battery capacity, the impact of charging and discharging rates, the influence of temperature, and the significance of depth of discharge. The lesson also discusses the concept of 'end of life' for a battery and how it can still be useful for other applications, introducing the idea of a battery's 'second life'. It further explores the concept of battery recycling and the importance of zero effluent in the recycling process. The lesson concludes with an introduction to future batteries and their potential to replace lithium-ion batteries.

Video Highlights

00:20 - EV battery life, Second life of a battery and capacity
05:06 - Impact of charge discharge cycles on battery life
09:38 - Battery pack made using battery cells
13:43 - Impact of depth of discharge on battery life
16:02 - Factors affecting battery cell life
22:16 - Concept of state of charge
24:19 - Home assignments

Key Takeaways

- Battery capacity decreases over time due to aging and charge-discharge cycles.
- The 'end of life' of a battery is when its capacity reduces to 70-80% of its initial capacity. However, it can still be used for other applications, marking its 'second life'.
- Battery recycling is crucial, and it should ideally be a zero-effluent process.
- The life of a battery is influenced by the rate of charging and discharging, temperature, and depth of discharge.
- Future batteries have the potential to replace lithium-ion batteries, but lithium-ion batteries are likely to stay relevant for some time.