Accession Number:

AD0805047

Title:

THERMAL BATTERY.

Descriptive Note:

Quarterly technical progress rept. no. 2, 1 Oct-31 Dec 66,

Corporate Author:

GENERAL MOTORS CORP INDIANAPOLIS IN ALLISON GAS TURBINE DIV

Report Date:

1967-01-01

Pagination or Media Count:

49.0

Abstract:

A research program is being conducted to define and eliminate those problems at the Cl2 electrode which prevent the Li-Cl2 battery from operating as a practical and reliable missile energy source. This application requires a high power density, high rate primary thermal battery. A pressure test cell for studying the effect of impurities on the performance of Cl2 electrodes was completed. Concentration polarization data were obtained in this cell for Poco AX graphite electrodes at pressures up to 5 atm using various mixtures of Ar and Cl2. Four laboratory demonstration cells were tested at pressures up to 3 atm. Power densities of 18 and 19 wsq cm were demonstrated with discharge times up to 20 min. Tests were conducted on the effects of excess Cl2 flow rate on cell voltage to determine the minimum flow requirements without excessive cathode polarization. Parametric scaling of the A1 battery design zero g, heat radiated was completed over a range of power levels, power density, and operating times. Energy densities up to 190 w-hrlb were obtained. A power density of 20 wsq cm and a power level of 5 kw yielded near optimum systems on a weight and volume basis. Parametric scaling of the A2 battery design zero g, with a heat sink was also completed. The requirements for low battery case temperatures using a heat sink reduced the energy densities to about 95 w-hrlb. A power density of 20 wsq cm and power level of 10 kw provided maximum energy densities. Author

Subject Categories:

  • Electric Power Production and Distribution

Distribution Statement:

APPROVED FOR PUBLIC RELEASE