The i-CoBat project—a collaboration between M&I Materials, WMG, and Ricardo—aims to develop a new form of electric vehicle (EV) battery cooling technology based on cell immersion cooling using dielectric fluid. i-CoBat says the technology promises improved power output and cell longevity, faster charging rates, and lower costs, addressing the key consumer issue of range anxiety.
For market acceptability—and in particular, to persuade owners of liquid-fueled vehicles to switch to an EV—charging times are a significant challenge in terms of alleviating range anxiety. Consumers seek fast recharging times, good performance and range, and competitive prices. During fast charging, however, battery cells can produce up to three times more heat energy than in normal driving and charging operations, with heating of the cells being a dominant factor in battery aging and performance degradation. Using current battery cell technology, therefore, the requirement for thermal optimization of pack design and operation is vitally important.