Accession Number:

AD0631700

Title:

A COMPARISON OF SILVER-CADMIUM AND NICKEL -CADMIUM BATTERIES FOR USE ON SATELLITES,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1962-01-30

Pagination or Media Count:

29.0

Abstract:

The power system used on many near earth satellites consists of a solar cell charger and a Ni-Cd battery. This combination has been used satisfactorily on satellites. A constant goal of power system designers is to decrease the weight and increase the reliability of such systems. The replacement of Ni-Cd batteries with Ag-Cd batteries is reported to decrease the weight, while maintaining the capacity, of a given power system. This paper is the result of an investigation of this possibility. Areas investigated were 1 The capability of a solar cell Ag-Cd cell system to limit overcharge current. 2 The compatibility of solar cells and Ag-Cd cells in such a power system. 3 The relationship between temperature of the secondary cells and their end of charge and discharge voltages for Ni-Cd and Ag-Cd cells. 4 The relative weight and volume advantages in the use of Ag-Cd cells over Ni-Cd cells. Author

Subject Categories:

  • Electrochemical Energy Storage
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE