The disclosure provides a vehicle and a power battery heating device and method thereof. According to the power battery heating method, when the power battery meets a heating condition, a three-phaseinverter is controlled to enable a three-phase alternating current motor to generate heat according to heating energy so as to heat cooling liquid flowing through the power battery; a preset direct-axis currentis obtained and a corresponding preset quadrature-axis current is obtained according to the heating power of the power battery; in the heating process, the three-phase inverter is controlledto adjust the phase current of the three-phase alternating current motor according to the preset direct-axis current and the preset quadrature-axis current, so that adjustment of heating power is realized; the motor is utilized to realize heating in the heating process of the power battery so as to raise the temperature of the power battery, a PCT heater is not needed, and the output torque of the motor is zero in the heating process, thereby ensuring driving safety.
本公开提出了一种车辆及其动力电池加热装置与方法,该动力电池加热方法通过在动力电池满足加热条件时,控制三相逆变器使得三相交流电机根据加热能量产生热量以对流经动力电池的冷却液进行加热,并获取预设直轴电流,以及根据动力电池加热功率获取相应的预设交轴电流,进而在加热过程中根据预设直轴电流和预设交轴电流控制三相逆变器对三相交流电机的相电流进行调节,实现加热功率的调节,并且对动力电池加热过程中利用电机实现加热以提升动力电池的温度,无需使用PCT加热器,并且加热过程中电机输出扭矩为零,保证了行车安全。
Vehicle and power battery heating device and method thereof
一种车辆及其动力电池加热装置与方法
2020-06-30
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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