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Update on International Space Station Nickel-Hydrogen Battery On-Orbit PerformanceInternational Space Station (ISS) Electric Power System (EPS) utilizes Nickel-Hydrogen (Ni-H2) batteries as part of its power system to store electrical energy. The batteries are charged during insolation and discharged during eclipse. The batteries are designed to operate at a 35% depth of discharge (DOD) maximum during normal operation. Thirty-eight individual pressure vessel (IPV) Ni-H2 battery cells are series-connected and packaged in an Orbital Replacement Unit (ORU). Two ORUs are series-connected utilizing a total of 76 cells, to form one battery. The ISS is the first application for low earth orbit (LEO) cycling of this quantity of series-connected cells. The P6 (Port) Integrated Equipment Assembly (IEA) containing the initial ISS high-power components was successfully launched on November 30, 2000. The IEA contains 12 Battery Subassembly ORUs (6 batteries) that provide station power during eclipse periods. This paper will discuss the battery performance data after two and a half years of cycling.
Document ID
20030068123
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Dalton, Penni (NASA Glenn Research Center Cleveland, OH, United States)
Cohen, Fred (Boeing Co. Canoga Park, CA, United States)
Date Acquired
September 7, 2013
Publication Date
August 1, 2003
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
AIAA Paper 2003-6065
NASA/TM-2003-212542
E-14108
NAS 1.15:212542
Report Number: AIAA Paper 2003-6065
Report Number: NASA/TM-2003-212542
Report Number: E-14108
Report Number: NAS 1.15:212542
Meeting Information
Meeting: First International energy Conversion Engineering Conference
Location: Portsmouth, VA
Country: United States
Start Date: August 17, 2003
End Date: August 21, 2003
Sponsors: American Society of Mechanical Engineers, Institute of Electrical and Electronics Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 22-335-14-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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