Results from Life Test in Progress on Eagle-Picher Nickel Cadmium Cells.

Abstract

This report summarizes the results from low-earth-orbit life testing on Eagle Picher nickel cadmium cells of nominal 50 Ah capacity that have been undergoing testing since 1983. As these cells have limited ability to withstand overcharge, a V-T charging scheme was adopted at the outset after careful determination of safe peak charge voltages at the two operating temperatures of 0 and 20 C. Of the original 30 cells put on life cycling under a complex load profile (10 cells each of 0 C/25% maximum depth-of-discharging (DOD), O C/40% maximum DOD, and 20 C/25% maximum DOD), both cell packs at 0 C were discontinued after less than 5000 pack at 20 C has exceeded 15,000 cycles (in May 1987), with no evidence of voltage spreading or other serious decline in performance. The original V-T level selected for this pack has not required adjustment. Keywords: Nickel, Cadmium, Batteries.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1988
Accession Number
ADA192816

Entities

People

  • Charles C. Badcock
  • James H. Matsumoto
  • Samuel W. Donley
  • Talmadge M. Poston
  • Warren G. Hwang

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Chemistry
  • Classification
  • Cycles
  • Earth Orbits
  • Failure Mode And Effect Analysis
  • Impedance
  • Life Cycles
  • Life Tests
  • Low Earth Orbits
  • Low Temperature
  • Low Voltage
  • Nickel Cadmium Batteries
  • Orbits
  • Security
  • Voltage

Readers

  • Battery Technology and Engineering
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster