LOW TEMPERATURE OPERATION OF BATTERIES.
Quarterly progress rept. no. 4, 15 Feb-14 Sep 63,
LITTLE (ARTHUR D) INC CAMBRIDGE MASS
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Calculations indicate that considerable current about 1 amp must be drawn from self-heating magnesium anode batteries in order to maintain a satisfactory working temperature without the benefit of insulation. Mathematical models of reasonable simplicity for describing the thermal properties of insulated battery systems give reliable results only in cases involving high efficiency insulation andor single cells. These models fail in the case of batteries with practical insulations because the composite nature of the battery makes it exceedingly complex thermally and reduces its heat transfer properties to such an extent that the insulation ceases to be the sole heat-flow controlling factor. Author