According to the energy management method for the tandem hybrid electric vehicle, in the driving process, an adjusting coefficient and a power distribution coefficient are obtained through the whole vehicle demand power, the battery SOC value and the battery temperature; multiplying the adjusting coefficient by the standard adjusting power to obtain adjusting power, adding the adjusting power and the power of the engine at the last moment to obtain engine output power, and determining the rotating speed of the engine according to the engine output power and the minimum fuel consumption characteristic curve of the engine; multiplying the power distribution coefficient by the output power of the engine to obtain the power output by the engine to the power battery, wherein the difference value is the power sent by the engine and used for driving the whole vehicle. And in the braking process, when the battery temperature is smaller than the temperature threshold value and the battery SOC value is smaller than the SOC threshold value, a braking energy recovery method is adopted for braking. The battery can be prevented from being continuously charged and discharged when the temperature is too high, and the service life of the power battery of the hybrid electric vehicle is prolonged.
本发明一种串联式混合动力汽车的能量管理方法,在驱动过程中,通过整车需求功率、电池SOC值和电池温度得到调节系数和功率分配系数;将调节系数和标准调节功率相乘得到调节功率,将调节功率和发动机上一时刻功率相加得到发动机输出功率,根据发动机输出功率,结合发动机最小燃油消耗特性曲线确定发动机转速;将功率分配系数与发动机输出功率相乘得到发动机向动力电池输出的功率,差值为发动机发出的用于整车驱动的功率。在制动过程中,当电池温度小于温度阈值且电池SOC值小于SOC阈值时,采用制动能量回收方法进行制动。本发明能够避免电池在温度过高时继续进行充放电,提高混合动力汽车动力电池的使用寿命。
Energy management method of tandem type hybrid electric vehicle
一种串联式混合动力汽车的能量管理方法
2023-06-27
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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