Recently lithium iron phosphate (LiFePO4) has been becoming "best-choice" materials in commercial Li-ion (polymer) Batteries for large capacity and high power applications, such as lap-top, power tools, e-wheel chair, e-bike, e-car and e-bus. A LiFePO4 battery has hybrid characters: as safe as lead-acid battery and as powerful as lithium ion cells. The advantages of large format Li-ion (polymer) batteries containing lithium iron phosphate (LiFePO4) are listed as below:
1. Fast charging:
2. Large overcharge tolerance and safer performance
3. Self balance
4. Simplifying battery management system (BMS) and battery charger
5. Longer cycle life
In comparison with LiCoO2 LiFePO4 battery extends its cycle life up to 2000 cycles.
6. High temperature performance
LiFePO4 battery runs better at elevated temperature, offering 10% more capacity, due to higher lithium ionic conductivity.
These features determined LiFePO4 battery is a best choice as EV battery packs.
