The invention discloses a system and method for realizing ramp parking of an electric vehicle with different ramp parking durations, and the system comprises a ramp parking duration database obtaining module which is used for obtaining a two-dimensional table of locked-rotor torque and locked-rotor allowable duration; the slope-holding control module comprises a slope-sliding judgment unit, a rotating speed closed-loop control unit and a slope-holding quit judgment unit, and the slope-sliding judgment unit is used for judging whether to enter slope-holding control or not; the rotating speed closed-loop control unit is used for switching the motor into rotating speed zero-speed control and outputting the current hill-holding torque; the hill-holding duration counter module is used for searching in the two-dimensional relation table according to the current hill-holding torque to obtain the allowable hill-holding duration, and setting the parking time to a mark when the parking duration reaches the allowable hill-holding duration; and the hill-holding quit judgment unit is used for judging whether to quit the hill-holding control or not according to the parking time arrival mark. According to the method, electric vehicle slope parking in different slope parking durations is achieved according to the slope parking torque, and the slope parking duration is guaranteed to the maximum extent while the motor is effectively protected against overtemperature.
本发明公开了一种可实现不同驻坡时长的电动汽车坡道驻停的系统及方法,该系统包括:驻坡时长数据库获取模块,用于获取堵转扭矩和堵转允许时长的二维表;驻坡控制模块包括溜坡判断单元、转速闭环控制单元和驻坡退出判断单元,溜坡判断单元用于判断是否进入驻坡控制;转速闭环控制单元用于将电机切换为转速零速控制,输出当前驻坡扭矩大小;驻坡时长计数器模块用于根据当前驻坡扭矩大小在二维关系表中查找,得到允许驻坡时长,在驻停时长达到允许驻坡时长时置位驻停时间到标志;驻坡退出判断单元,用于根据驻停时间到标志判断是否退出驻坡控制。本发明根据驻坡转矩实现不同驻坡时长的电动汽车驻坡,有效保护电机不过温的同时最大限度保证驻坡时长。
System and method capable of realizing ramp parking of electric vehicle with different ramp parking durations
可实现不同驻坡时长的电动汽车坡道驻停的系统及方法
2023-03-14
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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