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Characterization testing of a 40 AHR bipolar nickel-hydrogen batteryExtensive characterization testing has been done on a second 40 amp-hour (Ahr), 10-cell bipolar nickel-hydrogen (Ni-H2) battery to study the effects of such operating parameters as charge and discharge rates, temperature, and pressure, on capacity, Ahr and watt-hour (Whr) efficiencies, end-of-charge (EOC) and mid-point discharge voltages. Testing to date has produced many interesting results, with the battery performing well throughout all of the test matrix except during the high-rate (5C and 10C) discharges, where poorer than expected results were observed. The exact cause of this poor performance is, as yet, unknown. Small scale 2 x 2 inch battery tests are to be used in studying this problem. Low earth orbit (LEO) cycle life testing at a 40 percent depth of discharge (DOD) and 10 C is scheduled to follow the characterization testing.
Document ID
19900011147
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brewer, Jeffrey C. (NASA Marshall Space Flight Center Huntsville, AL., United States)
Manzo, Michelle A. (NASA Lewis Research Center Cleveland, OH, United States)
Gemeiner, Russel P. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1989
Publication Information
Publication: Space Electrochemical Research and Technology (SERT), 1989
Subject Category
Energy Production And Conversion
Accession Number
90N20463
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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