90-ampere-hour nickel-hydrogen dependent pressure vessel (DPV) low Earth orbit (LEO) life test evaluation

Author

Baer, Jean Marie ; Ang, Valerie J. ; Hwang, Warren C.

Author_Institution

Energy Technol. Dept., Aerosp. Corp., El Segundo, CA, USA

fYear

2002

fDate

2002

Firstpage

35

Lastpage

40

Abstract

Three 90-Ah dependent pressure vessel (DPV) battery packs are being LEO life tested at Crane. As of 9/10/01, the 40% DOD pack has completed 4863 total cycles, and the 60% DOD pack has completed 2885 total cycles. The third pack, formerly tested at 71% DOD but currently run at 60% DOD, had 2067 total cycles as of 9/24/01. The philosophy of these tests is to minimize charging to maximize life, so all the packs started with low charge-discharge (C/D) ratios. As a result, the charge conditions of the packs, especially the two 60% DOD packs, have been changed to find the appropriate operating points for these cells and packs

Keywords

hydrogen; life testing; nickel; pressure vessels; secondary cells; space vehicle power plants; LEO life testing; Ni-H₂; dependent pressure vessel battery packs; low Earth orbit life test; low charge-discharge ratios; nickel-hydrogen cell design; operating points; Aerospace testing; Batteries; Calibration; Capacitive sensors; Cranes; Life testing; Low earth orbit satellites; Manufacturing; US Department of Defense; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Battery Conference on Applications and Advances, 2002. The Seventeenth Annual

Conference_Location

Long Beach, CA

ISSN

1089-8182

Print_ISBN

0-7803-7132-1

Type

conf

DOI

10.1109/BCAA.2002.986365

Filename

986365