In the case of lithium batteries, the thermal runaway effect is compounded by the potential for inducing the oxidation of the electrolyte solvent. A number of alternatives are being considered to minimize or eliminate this potential failure mode. This particular problem is not considered to be significant in the smaller lithium ion cells. However, the larger cells have a mass-to-surface area ratio that limits the rate of heat transfer. The consequence of this is that during heat generation, higher internal temperatures are developed to dissipate the heat produced. This heat rejection issue is a matter of ongoing investigation.
Subscribe today to receive the INSIDER, a FREE e-mail newsletter from Embedded Technology featuring exclusive previews of upcoming articles, late breaking NASA and industry news, hot products and design ideas, links to online resources, and much more.