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The characteristics of sealed nickel-cadmium cells during voltage reversalA mechanism which allows a cell voltage reversal in a nickel cadmium battery are discussed. The effects of reconditioning and the characteristics of Ni-Cd cells during voltage reversal at low overdischarge rates are outlined. Graphs are presented for: (1) hydrogen pressure decay-effect of state of charge (open circuit stand); (2) hydrogen pressure increase during overdischarge; (3) hydrogen pressure decay-effect of temperature (cells terminals connected through resistors); (4) cell, positive and negative electrode voltage during reversal when reconditioning a 13 cell-24-Ah battery pack through a 40 Omega resistor; (5) pressure discharge current and recombination current during voltage reversal when reconditioning a 13 cell-24-Ah battery pack through a 40 Omega resistor; (6) theoretical hydrogen gas pressure if there were no recombination; and (7) effect of hydrogen pressure on recombination rate during overcharge.
Document ID
19790013417
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ritterman, P. F. (TRW Defense and Space Systems Group Redondo Beach, CA, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Publication Information
Publication: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop
Subject Category
Energy Production And Conversion
Accession Number
79N21588
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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IDRelationTitle19790013394Collected WorksThe 1977 Goddard Space Flight Center Battery Workshop
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