Vehicle energy management method, device and system, vehicle and storage medium

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Vehicle energy management method, device and system, vehicle and storage medium

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WU QINGLONG / ZHANG TIANQIANG / YANG FANG / LI WEI

The embodiment of the invention discloses a vehicle energy management method, device and system, a vehicle and a storage medium. The method is applied to a vehicle power system. The method comprises the following steps of acquiring a first state-of-charge value of a first battery, a second state-of-charge value of a second battery, a high-voltage end set value of a DCDC converter and a motor working state of a motor; if the set value of the high-voltage end is greater than the rated voltage of the first battery, the first state of charge value is lower than a first preset state of charge threshold, and the second state of charge value is higher than a second preset state of charge threshold, controlling the DCDC converter to enter a voltage control mode; and determining a charging mode ofthe first battery according to the working state of the motor, and adjusting the working states of the first battery and the second battery according to the charging mode, so that the second battery charges the first battery through the DCDC converter. According to the technical scheme of the embodiment of the invention, when fuel oil is insufficient or an engine fails and cannot charge the powerbattery with insufficient electric quantity, the power battery can still be supplied with power for a short time.

本发明实施例公开了一种车辆能量管理方法、装置、系统、车辆及存储介质。该方法应用于车辆动力系统；该方法包括：获取第一电池的第一荷电状态值、第二电池的第二荷电状态值、DCDC转换器的高电压端设定值以及电机的电机工作状态；若高电压端设定值大于第一电池的额定电压、第一荷电状态值低于第一预设荷电阈值且第二荷电状态值高于第二预设荷电阈值，控制DCDC转换器进入电压控制模式；根据电机工作状态确定第一电池的充电模式，并根据充电模式调整第一电池与第二电池的工作状态，以使第二电池通过DCDC转换器对第一电池进行充电。本发明实施例的技术方案，使得在燃油不足或发动机故障无法对电量不足的动力电池充电时，仍可对动力电池进行短时间的供电。