Hybrid electric vehicle and driving power generation control method and device thereof

Abstract

The invention discloses a hybrid electric vehicle and a driving power generation control method and device.The hybrid electric vehicle comprises a power battery, a driving motor, an engine and a power generator connected with the engine. Acquiring gradient information of the target road, consumed power of vehicle accessories, actual consumed power of a driving motor and uncompensated driving generated power; acquiring ramp compensation generation power according to the gradient information; according to the ramp compensation generation power, the vehicle accessory consumption power, the actual consumption power of the driving motor and the non-compensation driving generation power, the driving generation total power is obtained; and performing power generation control on the engine and the generator according to the driving power generation total power. Therefore, when the vehicle is subjected to driving power generation control, the corresponding ramp compensation power generation power is obtained according to the gradient information of the target road, so that the battery electric quantity of the whole vehicle during driving on the ramp is ensured, and the driving experience of a user is optimized.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a driving power generation control method for a hybrid electric vehicle, a driving power generation control device for a hybrid electric vehicle, and a hybrid electric vehicle. Background technique [0002] At present, a series hybrid vehicle usually consists of two motors (a generator GEN and a drive motor EM), an engine and a battery. When the power is sufficient, pure electric driving is used. When the power is insufficient, in order to ensure the driver's torque request , At this time, it is necessary to enter the series driving mode, and the GEN motor starts the engine to supplement the energy of the EM motor. Through the different combinations of the two modes, it not only overcomes the anxiety of short driving range of pure electric vehicles, but also solves the problem of poor economy of traditional fuel vehicles. Inadequate, is an extremely good hybrid car choice route....

AI Technical Summary

Problems solved by technology

[0003] However, for hybrid electric vehicles, when the SOC of the battery is low, the drivability often becomes poor. The fuel consumption of the whole vehicle has increased sharply. In addition, the traditional hybrid electric vehicle does not consider the conditions of the slope when dynamically adjusting the driving power generation power, so that when the vehicle is climbing a slope for a long time, the battery power is delayed or even seriously fed. Extremely poor user driving experience

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