The invention provides a motor controller, a power system, a vehicle and a heating method of a power battery. The motor controller comprises a power module which is provided with a direct current bus and an alternating current bus, the direct current bus is used for receiving direct current output by a power battery, the power module is used for converting the direct current into alternating current, and the alternating current bus is used for outputting the alternating current to a motor; the control module is connected with the power module and used for sending a first control signal to the power module, the first control signal is used for controlling the power module to input target square-wave voltage to a direct shaft of the motor, the target square-wave voltage is square-wave voltage with frequency change and/or amplitude change, and the target square-wave voltage is used for generating alternating pulse current on a direct-current bus; the pulse current is used for heating the power battery, so that concentrated radial electromagnetic force is prevented from being generated in the motor, vibration and noise caused by unbalanced stress in the motor are reduced, and the comfort degree of the vehicle is improved.
本申请提供了一种电机控制器、动力系统、交通工具及动力电池的加热方法。其中,电机控制器包括:功率模块,具有直流母线和交流母线,直流母线用于接收动力电池输出的直流电,功率模块用于将直流电转换为交流电,交流母线用于向电机输出交流电;控制模块,与功率模块相连,用于向功率模块发送第一控制信号,第一控制信号用于控制功率模块向电机的直轴输入目标方波电压,目标方波电压为频率变化和/或幅值变化的方波电压,目标方波电压用于在直流母线上产生交变的脉冲电流,脉冲电流用于对动力电池进行加热,有助于避免在电机中产生集中内的径向电磁力,从而削减由于电机内部受力不平衡引起的振动和噪声,有助于提高交通工具的舒适程度。
Motor controller, power system, vehicle and heating method of power battery
电机控制器、动力系统、交通工具及动力电池的加热方法
2023-06-23
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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