The invention discloses a fuel cell vehicle driving system, a control method and a control device. The control method comprises the steps that the working condition of a vehicle is determined according to the running speed of the vehicle; if the vehicle is in the parking idling working condition, a first clutch in a mechanical connection structure of the whole vehicle is controlled to be disconnected, the charge state of a high-voltage battery in the vehicle is obtained, and when the charge state of the high-voltage battery is smaller than a first target charge state, at least one of a fuel stack and a driving motor is controlled to charge the high-voltage battery; if the vehicle is in the operation condition, the cooling liquid temperature of the fuel stack is obtained, and a self-circulation cooling system or a cooling driving system is switched to cool the cooling liquid of the fuel stack according to the cooling liquid temperature; and when the cooling driving system cools the cooling liquid of the fuel stack, the output state of the mechanical torque of the cooling driving system is controlled according to the outlet pressure of a working medium circulating pump in the cooling driving system. The energy utilization rate of the fuel stack is improved.
本发明公开了一种燃料电池汽车驱动系统及控制方法和控制装置,控制方法包括:根据车辆行驶速度确定车辆的工况;若车辆处于停车怠速工况,则控制断开整车机械连接结构中的第一离合器,并获取车辆中高压电池的电荷状态,以及在高压电池的电荷状态小于第一目标电荷状态时控制燃料电堆和驱动电机中的至少一种对高压电池进行充电;若车辆处于运行工况,则获取燃料电堆的冷却液温度,并根据冷却液温度切换自循环冷却系统或冷却驱动系统为燃料电堆的冷却液降温;以及在冷却驱动系统为燃料电堆的冷却液降温时,根据冷却驱动系统中工质循环泵的出口压力控制冷却驱动系统的机械扭矩的输出状态。本发明提高了燃料电堆的能量利用率。
Fuel cell automobile driving system, control method and control device
一种燃料电池汽车驱动系统及控制方法和控制装置
2023-06-27
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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