Vehicle running control system and vehicle running control method for hybrid electric vehicle

Abstract

The invention discloses a vehicle running control system and a vehicle running control method of a hybrid electric vehicle. The system comprises a vehicle control unit, a battery management system connected with a power battery, a power controller connected with a power source of a hybrid power coupling system, and a sensor assembly arranged on the hybrid power coupling system. The vehicle control unit is connected with the sensor assembly, the battery management system and the power controller and used for conducting fault detection according to sensor detection data collected by the sensor assembly and battery detection data collected by the battery management system and controlling the power controller to drive in a target working mode corresponding to a fault detection result based on the fault detection result. According to the system, when the fault detection result shows that the fault exists, the power source of the hybrid power coupling system can still be controlled through the power controller to work in the target driving mode, so that the driving safety of the hybrid electric vehicle is guaranteed, and the driving risk caused by the fault of a high-voltage system is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a vehicle driving control system and a vehicle driving control method of a hybrid electric vehicle. Background technique [0002] The traditional power system is a transmission system mainly composed of an engine (internal combustion engine), a transmission, a differential and a transmission shaft, and its function is to provide the required driving power to the driving wheels of the vehicle. Engines have a range of speeds and torques, and they work best within a small range where either fuel consumption is minimized, harmful emissions are minimized, or both. However, the actual road conditions are ever-changing, not only in the speed of the driving wheels, but also in the torque required by the driving wheels. Therefore, to achieve the optimal speed and torque of the internal combustion engine, that is, the optimal state of power, and to match the power state of the dri...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a vehicle driving control system and a vehicle driving control method of a hybrid electric vehicle, so as to solve the problem that the high-voltage system of the hybrid electric vehicle is likely to cause a driving safety risk when a fault occurs

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