Fast Charging of Lithium-Ion Pouch Cells at Elevated Temperature

Author(s):

ViChi Tran and Jeffrey A Read

Abstract:

Lithium (Li)-ion batteries demonstrate high energy density and good cycle life under low- to moderate-charge-rate conditions but tend to suffer rapid capacity fade and safety problems under fast charge. Fast charging of Li-ion batteries provides promising capabilities for Army applications and for the electric vehicles market. To understand some of the limitations of Li-ion cell charging, two types of Li-ion pouch cells of similar size and construction were tested under different fast charging rates (full charge in 6 to 30 min) over a range of temperatures (20 to 60 °C). The collected data is evaluated as a function of discharge capacity and energy.