The invention discloses a vehicle storage battery feed starting control method and device and an electric vehicle. The vehicle storage battery starting control method comprises the following steps: when it is detected that the current voltage of a storage battery is lower than a preset threshold value or a feed starting control switch is closed, converting the high voltage of a power battery into low voltage; supplying low-voltage electricity to a BMS main controller and a DCDC converter, so that the BMS main controller and the DCDC converter are awakened; and driving the BMS main controller to close a main negative relay and a DCDC relay so as to provide high-voltage electricity for the DCDC converter through the power battery, and driving the BMS main controller to trigger the DCDC converter to charge the storage battery. According to the invention, the feed condition of the storage battery can be effectively avoided, and emergency starting can be carried out on the feed condition of the storage battery.
本发明公开了一种车辆蓄电池馈电启动控制方法、装置及电动汽车。所述车辆蓄电池启动控制方法,包括:当检测到蓄电池的当前电压低于预设阈值或馈电启动控制开关闭合时,将动力电池的高压电转换为低压电,向BMS主控制器和DCDC转换器提供低压电,以唤醒所述BMS主控制器和所述DCDC转换器;驱动所述BMS主控制器闭合主负继电器和DCDC继电器,以通过所述动力电池向所述DCDC转换器提供高压电,并驱动所述BMS主控制器触发所述DCDC转换器为所述蓄电池充电。本发明能够有效避免出现蓄电池馈电情况,以及对蓄电池馈电情况进行应急启动。
Vehicle storage battery feed starting control method and device and electric vehicle
一种车辆蓄电池馈电启动控制方法、装置及电动汽车
2021-12-10
Patent
Electronic Resource
Chinese
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