The invention discloses a pure electric vehicle storage battery intelligent power supply management method which comprises the steps that after a whole vehicle is powered off and sleeps, a BMS is automatically awakened at regular time and awakens a whole vehicle network, whether the charging condition of a vehicle-mounted storage battery is met or not at the moment is judged, and if yes, a charging request is sent to a VCU; after the VCU receives the charging request, whether the vehicle door state, the power battery SOC value and the vehicle fault state meet the charging condition or not is judged, and if yes, the charging process is executed; in the charging process, the VCU sends a control instruction to a DCDC converter to enable the DCDC converter to enter a working state and sends acharging control instruction to the BMS, and the BMS controls a relay connected between the power battery and the DCDC converter in series to be closed. When the vehicle is in a non-Ready gear state,the BMS can be started at regular time to complete charging of the vehicle-mounted storage battery, the electric quantity of the vehicle-mounted storage battery is ensured, and the defect that the vehicle-mounted storage battery cannot be started due to power shortage caused by long-time non-starting and long-time parking is avoided.
本发明公开了一种纯电动汽车蓄电池智能电源管理方法,包括:在整车下电休眠后,BMS定时自唤醒并唤醒整车网络,判断此时是否满足车载蓄电池的充电条件,若满足,向VCU发出补电请求;VCU接收到补电请求后,判断此时车门状态、动力电池SOC值、车辆故障状态是否满足补电条件,若满足,进入补电流程;在补电流程中,VCU发出控制指令至DCDC转换器使其进入工作状态并发出补电控制指令至BMS,由BMS控制串接在动力电池与DCDC转换器之间的继电器闭合。可以在车辆处于非Ready档状态时定时启动BMS完成车载蓄电池的补电工作,保证车载蓄电池的电量,避免由于长时间未启动、长时间停放造成的车载蓄电池亏电无法启动的缺陷。
Pure electric vehicle storage battery intelligent power supply management method and system
一种纯电动汽车蓄电池智能电源管理方法及系统
2020-07-28
Patent
Electronic Resource
Chinese
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