The invention relates to a vehicle power-off fault processing method, device and system and a storage medium. The method, device and system are used for vehicle power-off fault processing with a CAN network power-off function and a KL15 hard wire power-off function at the same time and applied to a vehicle control unit VCU. The method comprises the steps: if it is detected that a PEPS signal generated through a CAN network is abnormal or it is detected that the PEPS signal is normal, but the PEPS signal is not consistent with the state of the KL15 hard wire, judging whether the high-voltage shut-off condition of the vehicle is met or not; if not, controlling the vehicle to enter a speed limiting state, and sending out a power system fault alarm or sending out a power system fault alarm; if yes, controlling the vehicle to shut off high voltage, and sending a power loss alarm. Power supply electricity exhaustion and even influence on the service lifetime of a battery due to the fact that the whole vehicle cannot shut off high voltage are avoided.
本申请涉及一种整车下电故障处理方法、装置、系统及存储介质,其用于同时具有CAN网络下电功能和KL15硬线下电功能的整车下电故障处理,并应用于整车控制器VCU,所述方法包括:若检测到通过CAN网络发生来的PEPS信号异常,或者检测到PEPS信号正常,但PEPS信号与KL15硬线状态不一致,则判断是否满足整车下高压条件:若不满足,则控制整车进入限速状态,并发出动力系统故障告警,或者发出动力系统故障告警;若满足,控制整车下高压,并发出动力丢失告警。避免因整车无法下高压而导致电源电量耗尽,甚至影响电池寿命。
Vehicle power-off fault processing method, device and system and storage medium
一种整车下电故障处理方法、装置、系统及存储介质
2021-08-13
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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