The invention provides a discharging circuit of a motor controller and a discharging control method. The discharging circuit comprises a bus capacitor, an active discharging resistance circuit, an electric drive system loop, a signal processing module and a main control module. The active discharge resistor circuit is connected in parallel with two ends of the bus capacitor. The electric drive system loop is connected in parallel with two ends of the bus capacitor; the signal processing module is connected with the active discharge resistance circuit, and outputs a discharge signal to the active discharge resistance circuit when collecting a whole vehicle collision signal and a driving chip fault signal; the main control module is connected with the signal processing module, the active discharge resistance circuit and the electric drive system loop, and outputs a discharge signal to the electric drive system loop when the driving chip fault signal is not received; and when the driving chip fault signal is received and the whole vehicle collision signal is not received, a discharging signal is output to the active discharging resistance circuit. The bus capacitor voltage is discharged in time, and the working reliability of the discharging circuit and the safety of the vehicle are ensured.
本申请提供了一种电机控制器的放电电路及放电控制方法,放电电路包括母线电容、主动放电电阻电路、电驱系统回路、信号处理模块以及主控模块;主动放电电阻电路并联在母线电容的两端;电驱系统回路并联在母线电容的两端;信号处理模块连接主动放电电阻电路,在采集到整车碰撞信号和驱动芯片故障信号时,向主动放电电阻电路输出放电信号;主控模块连接信号处理模块、主动放电电阻电路和电驱系统回路,在未接收到驱动芯片故障信号期间向电驱系统回路输出放电信号;在接收到驱动芯片故障信号且未接收到整车碰撞信号期间,向主动放电电阻电路输出放电信号。及时泄放母线电容电压,确保放电电路工作的可靠性和车辆的安全。
Discharging circuit and discharging control method of motor controller
电机控制器的放电电路及放电控制方法
24.12.2024
Patent
Elektronische Ressource
Chinesisch
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