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The thermal behavior in aluminum-air battery has prominent effect on its operation performance, however, the investigations to the battery thermal behavior are still scarce. In this paper, an alkaline vehicular traction aluminum-air battery was designed and its thermal behavior was experimentally investigated. The impacts of various parameters were examined, including the ambient temperature, electrolyte concentration, and discharge current density on the battery's temperature-rise, outgoing heat-flux, heat generation rate, and discharge efficiency, etc. It is shown that the battery's temperature-rise, outgoing heat-flux, and heat generation rate increase with the ambient temperature decreases and the electrolyte concentration increases. Furthermore, the battery heat generation rate decreases over the discharge time, particularly it decreases drastically at the first half of discharge. The discharge efficiency of the battery increases with the increases of operating temperature and discharge current density. The battery discharge efficiency varies with the electrolyte concentration, which approaches 78 % under the electrolyte concentration of 3.0 mol L−1, but less than 60 % under the concentrations of 1.0 mol L−1 and 6.0 mol L−1. The present study compensates a vacancy of the thermal behavior characterization for a vehicular traction aluminum-air battery, and the results are of significance in understanding the aluminum-air battery's thermal behavior. • An alkaline Al-air battery is devised. • Proposes a measurement method to characterize the Al-air battery thermal behavior. • Impacts of thermal behavior on Al-air battery operating performance is studied. [ABSTRACT FROM AUTHOR]

Purposing to the thermal profile management of typical format 21700 lithium-ion battery cells, this study develops a cellular liquid cooling jacket to meet their requirements. To this end, the effects of fluid flowing, channel dimension, and cooling medium on the cell thermal profile were investigated numerically, and then the simulation effectiveness was authenticated experimentally as per a constructed test bench. Meanwhile, a non-dimensional analysis for the optimum design of cellular cooling jacket was implemented. The results show that the interlaced flow directions can capture a lower temperature standard deviation and a more even thermal distribution. The non-dimensional analysis reveals that the increasing fluid flow rate and channel size can effectively promote the performance of high-efficiency and low-impedance in the designed cellular cooling plate. The glycol aqueous solution to minimize cell's temperature difference and temperature standard deviation is under a stronger capability than that of the liquid water. Experimental verification indicates that the developed cellular cooling jacket is of great control effectiveness to the thermal profile of the cylindrical 21700 cells. A benefit inside this study for the thermal management system designing for the power battery pack of composing with the cylindrical 21700 cells. • A cellular cooling jacket is developed to control thermal profile of a 21700 cell. • Impact of fluid flowing on 21700 cell thermal profiles is studied numerically. • Dimensionless analysis of the cellular cooling jacket performance is conducted. • The effectiveness of battery pack thermal design is verified by a built test bench. • The thermal design is of great effectiveness to control 21700 cell thermal field. [ABSTRACT FROM AUTHOR]