The invention provides a control method for automatic gear shifting of an electric vehicle two-gear transmission. The control method includes the steps that after a finished vehicle is normally supplied with power, a gear shifting device is propelled to the forward gear, an accelerator pedal is treaded, a motor controller controls the output of a motor, and a transmission controller detects the rotating speed of the motor and the input quantity of the accelerator pedal. The transmission controller judges whether the finished vehicle meets the gear shifting condition or not according to the rotating speed of the motor and the input percentage of the accelerator pedal, and gear shifting is conducted when the rotating speed of the motor and the input percentage of the accelerator pedal meet the gear shifting condition; if the rotating speed of the motor and the input percentage of the accelerator pedal do not meet the gear shifting condition, the current status is maintained; the transmission controller is in communication with the motor controller, speed regulating and gear shifting begin, and the driving force of the finished vehicle is reduced to be zero; after gear shifting is completed, the finished vehicle recovers the driving force, and the finished vehicle runs continuously. The intention of a driver can be prejudged effectively, and the driving performance of the finished vehicle is good.
Control method and system for automatic gear shifting of electric vehicle two-gear transmission
2015-05-06
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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