The invention discloses an energy management method and device for a hybrid electric vehicle, and the energy management method comprises the steps: monitoring the real-time voltage of a low-voltage battery when a low-voltage circuit of the vehicle is powered on, but a high-voltage circuit is not powered on; judging the voltage grade of the real-time voltage; and after the high-voltage circuit is electrified, the DC-to-DC module is controlled to charge the low-voltage battery at the corresponding level according to the voltage level. When the low-voltage circuit is powered on but the high-voltage circuit is not powered on, the low-voltage battery is charged adaptively based on the monitored voltage of the low-voltage battery, overcharge and undercharge of the battery are prevented, and the service life of the battery is prolonged.
本申请公开了一种混动汽车的能量管理方法及装置,能量管理方法包括:当车辆的低压电路上电,但高压电路未上电时,监测低压电池的实时电压;判断实时电压的电压等级;在高压电路上电后,依据电压等级控制直流转直流模块对低压电池进行相应等级的充电。本申请在低压电路上电但高压电路未上电时,基于监测的低压电池电压自适应对低压电池进行充电,防止电池过充及欠充,提升电池寿命。
Energy management method and device for hybrid electric vehicle
一种混动汽车的能量管理方法及装置
2024-02-06
Patent
Elektronische Ressource
Chinesisch
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