Energy consumption optimization control method, device and electric four-wheel drive vehicle

Abstract

The invention discloses an energy consumption optimization control method, a device and an electric four-wheel drive vehicle. The method comprises the steps that according to the currently detected vehicle speed and first battery information of the vehicle and the opening degree of an accelerator pedal or a brake pedal, the energy consumption of the vehicle is optimized; a fuzzy control method isadopted to calculate a torque rough value currently needed by the automobile as a whole, and the torque rough value is corrected; according to the currently detected wheel rotating speed of the automobile, the calculation is carried out to obtain the maximum first torque which can be currently provided for the front axle and the maximum second torque which can be currently provided for the rear axle by the automobile motor system; the range of a torque distribution coefficient is calculated according to the torque correction value, the maximum first torque and the maximum second torque; and the torque distribution is carried out on the front axle and the rear axle of the automobile according to the range of the torque distribution coefficient and the torque correction value. By means of the technical scheme, optimization of automobile torque distribution is achieved according to the current working condition of the automobile, and the automobile driving range and the whole automobile economy are improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an energy consumption optimization control method and device and an electric four-wheel drive vehicle. Background technique [0002] Torque is a special moment that makes an object rotate. The torque of the engine refers to the torque output by the engine from the crankshaft end. Under the condition of fixed power, the torque is inversely proportional to the engine speed, the faster the speed, the smaller the torque, and vice versa, it reflects the load capacity of the car within a certain range. The distribution of the torque of the four-wheel drive vehicle is related to the economy of the vehicle. [0003] In the prior art, the front and rear torque distribution of the vehicle is usually carried out in a fixed ratio, which has limited room for improving the mileage of the electric vehicle and the economy of the whole vehicle. As the user's requirements for driving range ...

AI Technical Summary

Problems solved by technology

With the increase of users' requirements for driving range and vehicle economy, the use of a fixed ratio for torque distribution is far from meeting the current user requirements. There is an urgent need for a method of energy consumption optimization control to improve and optimize torque distribution.

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