INVESTIGATION OF METHODS LEADING TO THE DETERMINATION OF THE STATE OF CHARGE OF NICKEL-CADMIUM BATTERIES.

Abstract

Equivalent circuit measurements were made on BB418 cells as a function of residual capacity and time at 200 and 400 cps. No useful correlation with residual capacity was found. A correlation was found with the equivalent circuit product CR sub c for low frequency data taken previously. To pursue this further, different types of cells were tested at 10 cps. BB418 cells were manually cycled, automatically cycled, and stored and C and R sub c measured as a function of time and residual capacaty at 10 cps. The BB418 cells showed the most consistent results, namely that a correlation was found with residual capacity after cells were recently charged or discharged. Circular, sealed cells did not show any consistent relation between C or R sub c and residual capacity. Cells placed on storage did not show any significant change of C or R sub c with time on storage. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 30, 1963
Accession Number
AD0435989

Entities

People

  • H. N. Seiger
  • J. Wartell

Tags

DTIC Thesaurus Topics

  • Circuits
  • Equivalent Circuits
  • Frequency
  • Measurement
  • Nickel Cadmium Batteries
  • Residuals
  • Storage

Readers

  • Geodesy
  • Mathematics or Statistics
  • Oncology (Cancer Research).