The invention discloses a failure control method and system under an HCU program abnormal reset scene, and the method comprises the steps: 1, enabling a BMS, an MCU and an EMS to maintain power output during the abnormal reset period when an HCU program is reset, and avoiding an HCU error instruction; 2, after the HCU program is reset, the BMS keeps controlling the high-voltage state of the power battery during the period that a control command is lost, the MCU keeps controlling the torque output of the motor, and the EMS keeps the torque output of the engine; 3, judging whether the BMS, the MCU and the EMS receive the HCU control command again or not after the control command loss period is ended; when the BMS, the MCU and the EMS do not receive the HCU control command again, a control command frame loss fault protection strategy is executed; when the BMS, the MCU and the EMS detect that the control command of the HCU is recovered, the command of 50 milliseconds after the command of the HCU is recovered is ignored, and the final command execution output before the signal of the HCU is lost is continuously kept; and 4, after the BMS, the MCU and the EMS receive the HCU recovery command for 50 milliseconds, judging that the HCU is recovered to be normal, and responding to the current command of the HCU to execute output.
本发明公开了一种HCU程序异常复位场景下的失效控制方法及系统,所述方法包括:步骤1、HCU程序发生复位,异常复位期间BMS、MCU、EMS需保持动力输出,避开HCU错误指令;步骤2、HCU程序复位后,在控制命令丢失期间BMS保持控制动力电池高压状态,MCU保持控制电机扭矩输出,EMS保持发动机扭矩输出;步骤3、判断控制命令丢失期间结束后BMS、MCU、EMS是否重新接收到HCU控制命令;当BMS、MCU、EMS未重新接到HCU控制命令,则执行控制命令丢帧故障保护策略;当BMS、MCU、EMS检测到HCU的控制命令恢复时,对HCU恢复命令后的50毫秒命令予以忽略,继续保持HCU信号丢失前最后的命令执行输出;步骤4、BMS、MCU、EMS收到HCU恢复命令50毫秒后,判定HCU恢复正常,响应HCU当前命令执行输出。
Failure control method and system in HCU program abnormal reset scene
一种HCU程序异常复位场景下的失效控制方法及系统
03.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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