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Rapid, efficient charging of lead-acid and nickel-zinc traction cellsLead-acid and nickel-zinc traction cells were rapidly and efficiently charged using a high rate taped dc charge (HRTDC) method which could possibly be used for on-the-road service recharge of electric vehicles. The HRTDC method takes advantage of initial high cell charge acceptance and uses cell gassing rate and temperature as an indicator of charging efficiency. On the average, 300 amp-hour nickel-zinc traction cells were given a HRTDC to 78% of rated amp-hour capacity within 53 minutes at an amp-hour efficiency of 92% and an energy efficiency of 52%. Three-hundred amp-hour lead-acid traction cells were charged to 69% of rated amp-hour capacity within 46 minutes at an amp-hour efficiency of 91% with an energy efficiency of 64%.
Document ID
19790026071
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Smithrick, J. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference
Location: San Diego, CA
Start Date: August 20, 1978
End Date: August 25, 1978
Accession Number
79A10084
Funding Number(s)
CONTRACT_GRANT: EC-77-A-31-1011
Distribution Limits
Public
Copyright
Other

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