METHOD AND SYSTEM FOR CONTROLLING CHARGING FOR HYBRID VEHICLE

摘要

The present disclosure relates to a method and a system for controlling charging of a hybrid vehicle which performs a control of an engine idle by using a starting and generating motor when charging a battery by using the starting and generating motor in a hybrid vehicle. An embodiment of the present disclosure includes the steps of: determining target charging amount with which the starting and generating motor charges a battery and a target torque of the starting and generating motor for generating the target charging amount in accordance with consumption power of a SOC (state of charge) of the battery and a load of an electric device when the engine idles; driving the engine by applying an engine torque command to the engine with feed forward corresponding to the motor target torque; detecting a real outputted torque in the starting and generating motor which is rotated by a drive of the engine; calculating an error between the detected motor real torque and the motor target torque; calculating an engine torque correction value such that a driving torque of the engine is corrected in accordance with an error value of the calculated motor torque; and controlling an idle speed of the engine with feedback by adding the engine torque correction value with feedback by the engine torque command. [Reference numerals] (AA) Start; (BB,DD) NO; (CC,EE) YES; (FF) End; (S110) Check state of an engine idle; (S120) Is the engine idle stable?; (S130) Determine target charging amount and target torque of starting/generating motor for the target charge amount; (S140) Drive the engine by applying an engine torque command to the engine with feed forward corresponding to the motor target torque; (S150) Detect a real outputted torque in the starting/generating motor which is rotated by a drive of the engine; (S160) Calculate an error value between the detected motor real torque and the motor target torque (Actual torque monitoring value and accumulated error value); (S170) Accumulated error value >= setting value; (S180) Calculate an engine torque correction value based on the error value; (S190) Run the engine by adding the engine torque correction value to the engine torque command