摘要：SummaryHeating battery at low temperatures is fundamental to avoiding the range anxiety and the time-consuming charging associated with electric vehicles (EVs). One method for achieving fast and uniform battery heating is to polarize the cell under pulse currents. However, the on-board implementation of this method leads to an increase in the cost and size. Therefore, in this study, an adapted EV circuitry compatible with the existing one and an optimized operating condition are proposed to enable rapid battery heating. With this circuit, electricity transfer between the cells can be realized through a motor, leading to remarkably higher battery currents than those of the conventional circuit. The increase in the maximum heating currents (from 1.41C to 4C) resulted in a battery temperature rise of 8.6°C/min at low temperatures. This heating method exhibits low cost, high efficiency, and negligible effects on battery degradation, practical and promising on battery heating of EVs.Graphical abstractDisplay OmittedHighlights•Rapid temperature rise, high efficiency, and low cost for battery heating are obtained•The batteries are divided into two modules and connected to the inverter individually•The electricity transferred between battery modules is motivated by a static motor•The pulse currents for battery heating are improved significantly at any frequencyElectrochemistry; Electrochemical Energy Storage; Energy Engineering; Energy Systems; Energy Materials
