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International Space Station Nickel-Hydrogen Battery Start-Up and Initial 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 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 describe the battery hardware configuration, operation, and role in providing power to the main power system of the ISS. We will also discuss initial battery start-up and performance data.
Document ID
20010094063
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Cohen, Fred (Boeing Co. Canoga Park, CA United States)
Dalton, Penni J. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
July 1, 2001
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
E-12837
NASA/TM-2001-210983
IECEC2001-AT-52
NAS 1.15:210983
Report Number: E-12837
Report Number: NASA/TM-2001-210983
Report Number: IECEC2001-AT-52
Report Number: NAS 1.15:210983
Meeting Information
Meeting: 36th Intersociety Energy Conversion Engineering Conference
Location: Savannah, GA
Country: United States
Start Date: July 29, 2001
End Date: August 2, 2001
Sponsors: American Inst. of Aeronautics and Astronautics, American Nuclear Society, American Society of Mechanical Engineers, American Inst. of Chemical Engineers, Society of Automotive Engineers, Inc., Institute of Electrical and Electronics Engineers
Funding Number(s)
PROJECT: RTOP 478-29-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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