一种电动汽车的驱动电路，可在低温下实现电池组的快速加热。
Drive circuitry of an electric vehicle enabling rapid heating of the battery pack at low temperatures.
作者信息
Li Yalun, Gao Xinlei, Qin Yudi, Du Jiuyu, Guo Dongxu, Feng Xuning, Lu Languang, Han Xuebing, Ouyang Minggao
机构信息
State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China.
School of Transportation Science and Engineering, Beihang University, Beijing 10191, China.
出版信息
iScience. 2020 Dec 10;24(1):101921. doi: 10.1016/j.isci.2020.101921. eCollection 2021 Jan 22.
Heating 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.
在低温下加热电池对于避免与电动汽车（EV）相关的续航里程焦虑和耗时充电至关重要。实现快速且均匀的电池加热的一种方法是在脉冲电流下使电池极化。然而，该方法在车载应用时会导致成本增加和尺寸增大。因此，在本研究中，提出了一种与现有电路兼容的适配电动汽车电路以及优化的运行条件，以实现电池的快速加热。利用该电路，电池之间的电能传输可通过电机实现，从而产生比传统电路显著更高的电池电流。最大加热电流的增加（从1.41C增至4C）使得低温下电池温度以8.6°C/分钟的速度上升。这种加热方法成本低、效率高，对电池老化的影响可忽略不计，在电动汽车电池加热方面具有实用性和前景。
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