Performance Evaluation of Lithium-ion Batteries on Small Electric Bus

Abstract

We evaluate performance of lithium-ion batteries on the small electric bus, conducting tests of cell and battery pack using discharge/charge machine. We suggest the test item on distinction between good or bad of a battery. In the discharge/charge cycle tests of cell at environmental temperature 25°C, the relative capacity was 60 percent at 10,000 cycles. In the discharge capacity test of battery packs on the small electric bus, the relative capacity maintained more than 90 percent in progress for approximately 900 days. Finally, based on these results, we analyzed about influence factor on a battery discharge capacity.