Vehicle controlling method and system and vehicle

Abstract

The invention provides a vehicle controlling method and system and a vehicle. The controlling method comprises the steps that the state-of-charge of a power battery is monitored; when the state-of-charge of the power battery drops to a first threshold value, an engine main driving mode is adopted to drive the vehicle to run, wherein the engine main driving mode comprises a mode taking engine driving being as a main and motor driving as auxiliary and a mode with independent driving of an engine and electricity generating by a motor; the first threshold value is greater than a second threshold value, and the second threshold value is the lower limiting value of the state-of-charge of the power battery; when the state-of-charge of the power battery drops to the lower limiting value, the modewith independent driving of the engine is forcibly adopted to drive the vehicle to run. According the controlling method, the accelerating performance of the vehicle can be effectively improved, and driving experience is enhanced accordingly.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle control method, system and vehicle. Background technique [0002] For a hybrid vehicle with two main power sources (such as an engine and a motor), when the SOC (State Of Charge) of the power battery in the vehicle is low, especially when the lower limit of the SOC of the power battery is reached (such as 20%), in order to avoid the excessive power consumption of the power battery and affect the service life of the power battery, it is generally forbidden to use the motor to consume the power of the power battery to drive the vehicle, and the engine alone drives the whole vehicle to run. There may be a steep drop, for example: when the vehicle accelerates rapidly, the engine may not be able to provide enough torque, thus affecting the acceleration performance, affecting the driving experience of the vehicle, and causing users to complain. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] For a hybrid vehicle with two main power sources (such as an engine and a motor), when the SOC (State Of Charge) of the power battery in the vehicle is low, especially when the lower limit of the SOC of the power battery is reached (such as 20%), in order to avoid the excessive power consumption of the power battery and affect the service life of the power battery, it is generally forbidden to use the motor to consume the power of the power battery to drive the vehicle, and the engine alone drives the whole vehicle to run. There may be a steep drop, for example: when the vehicle accelerates rapidly, the engine may not provide enough torque, thus affecting the acceleration performance, affecting the driving experience of the vehicle, and causing users to complain

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