Accession Number:

ADA415407

Title:

Lithium-Ion Battery Pulse/High Rate Demonstration

Descriptive Note:

Final rept. 5 Feb 1999-6 Dec 2001

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE

Personal Author(s):

Report Date:

2003-03-01

Pagination or Media Count:

16.0

Abstract:

Performance of lithium-ion batteries at low temperatures andor high rates is relatively poor due to high cell internal impedance. The ac impedance spectroscopy was utilized to determine the impedance characteristics of lithium-ion cells as a function of state-of-charge, temperature, and cycle number. From this impedance characterization, optimal pulse current discharge times and discharge battery temperatures were selected to enhance the lithium-ion battery discharge performance.

Subject Categories:

  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE