The invention relates to the technical field of endurance of pure electric vehicles, in particular to a control method for prolonging the endurance mileage of a pure electric vehicle, a'long mileage mode 'key is arranged, a VCU (vehicle control unit) judges whether to enter the'long mileage mode' or not by receiving or detecting signals, and after entering the'long mileage mode ', the VCU cooperates with the following control strategy to control the endurance mileage of the pure electric vehicle. The method comprises the following specific steps that the VCU limits the maximum vehicle speed to be a calibration value; the VCU limits the power of the air conditioning system, different limiting coefficients are set according to the interval section of the SOC value of the battery, and grading gradual limiting is carried out; when the vehicle is in a neutral gear and is static, the VCU does not enable the motor controller MCU any more, when the vehicle runs at a high speed and the opening degree of an accelerator is smaller than 15%, the VCU sends out energy recovery torque to the MCU, and the MCU controls the motor to conduct energy recovery and recover speed reduction energy to prolong the endurance mileage; the VCU performs DCDC enabling control according to the voltage of the storage battery; and control and optimization are carried out through a control strategy, so that the problem of low endurance mileage is solved.
本发明涉及纯电汽车续航技术领域,具体地说,本发明涉及一种延长纯电汽车续航里程的控制方法,设置有“长里程模式”按键,整车控制器VCU通过接收或者检测上述信号进行判定是否进入“长里程模式”,进入“长里程模式”后,VCU进行协同以下控制策略,具体步骤如下:VCU限制整车车速最高为标定值;VCU限制空调系统的功率,根据电池SOC值的区间段设定不同的限制系数,进行分级逐渐限制;当车辆处于空挡且静止时,VCU不再使能电机控制器MCU,车辆处于高速行驶且油门开度小于15%时,VCU发出能量回收扭矩给MCU,MCU控制电机进行能量回收,回收降速能量,来延长续航里程;VCU根据蓄电池电压进行DCDC使能控制;通过控制策略来进行控制与优化,来解决续航里程低的问题。
Control method for prolonging endurance mileage of pure electric vehicle
一种延长纯电汽车续航里程的控制方法
2024-10-18
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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