The invention discloses a driving control strategy of a composite energy system based on a fuel cell, a lithium battery and an electric flywheel battery, and belongs to the field of electric vehicle control. The strategy is characterized in that: the composite energy system can be controlled to operate in various driving modes according to the states of a vehicle, the fuel cell, the lithium battery, the electric flywheel battery and a clutch. Under the large-load driving working condition, by means of the advantages of high energy density and high power density of the lithium power battery and an electric flywheel, the effect of peak shaving is achieved, the peak power output of the fuel cell can be effectively reduced, and the service life of the fuel cell can be remarkably prolonged. Meanwhile, under the low-load working condition, a vehicle control unit controls the electric energy output by the fuel cell to preferentially supply the lithium battery with the residual energy under the condition that the whole vehicle driving condition is met, and the residual energy is transferred to the flywheel to be stored after being converted into mechanical energy by the motor, so that the fuel cell can work in an efficient working interval, the operation efficiency of the fuel cell is improved, and the energy states of the lithium battery and the flywheel are ensured.
一种基于燃料电池、锂电池和电动式飞轮电池复合能源系统驱动控制策略属于电动汽车控制领域,其特征在于能够依据车辆、燃料电池、锂电池、电动式飞轮电池和离合器的状态,控制复合能源系统运行于多种驱动模式。大负荷驱动工况下,借助锂动力电池和电动式飞轮高能量密度和高功率密度的优势,起“削峰填谷”的作用,能够有效降低燃料电池峰值功率的输出,可以显著提高燃料电池的使用寿命。同时,低负荷工况下,整车控制器控制燃料电池输出的电能在满足整车驱动的条件下,剩余的能量优先补给锂电池,其余的能量经电动机转化为机械能后,传递给飞轮储存,这样既可保证燃料电池工作在高效工作区间,提高燃料电池的运行效率,又保证了锂电池和飞轮的能量状态。
Driving control strategy of composite energy system based on fuel cell, lithium battery and electric flywheel battery
一种基于燃料电池、锂电池和电动式飞轮电池复合能源系统驱动控制策略
2021-09-14
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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