A virtual P-gear hill-holding and slope-sliding prevention control method for a new energy automobile comprises the steps that hill-holding control is conducted, specifically, firstly, when a VCU receives a P-gear signal, a motor controller MCU is controlled to enter a virtual P-gear mode, and then parking is achieved through the virtual P-gear mode when the motor controller MCU does not receive a hand brake or brake signal; and finally, the motor controller MCU starts an electronic brake EPB after the parking duration reaches the set duration, and after the electronic brake EPB is started, the motor controller MCU does not park in the virtual P-gear mode any more. According to the design, a mechanical P-gear parking mechanism, a P-gear parking mechanism controller, a related CAN network, a wire harness and other parts are omitted, parking is conducted in a virtual P-gear mode, the vehicle cost can be reduced, the assembling precision can be improved, damage to a gearbox gear caused by misoperation of a driver is avoided, and in the parking process, noise is lower, the shaking amplitude is lower, the riding comfort is high, and the vehicle safety is high.
一种新能源汽车虚拟P挡驻坡和防溜坡控制方法,包括驻坡控制,首先整车控制器VCU在接收到P挡信号时控制电机控制器MCU进入虚拟P挡模式,然后电机控制器MCU在未接收到手刹或刹车信号时通过虚拟P挡模式实现驻车,最后电机控制器MCU在驻车时长达到设定时长后启动电子刹车EPB,电子刹车EPB开启后电机控制器MCU不再通过虚拟P挡模式驻车。本设计取消了机械P挡驻车机构、P挡驻车机构控制器及相关CAN网络和线束等部件,采用虚拟P挡模式驻车,不仅能降低车辆成本和装配精度、避免驾驶员误操作致使变速箱齿轮损坏,而且驻车时噪音更小、晃动幅度更低,乘车舒适性高、车辆安全性高。
Virtual P-gear slope parking and slope sliding prevention control method for new energy automobile
一种新能源汽车虚拟P挡驻坡和防溜坡控制方法
2022-03-22
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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