Energy control method, braking energy feedback system, and computer-readable storage medium

Abstract

The invention discloses an energy control method. In the scheme, the absolute value of the difference between the target braking energy feedback torque of the current sampling period and the target braking energy feedback torque of the previous sampling period can be made smaller than the basis of the current sampling period. The absolute value of the difference between the energy feedback braking torque and the target braking energy feedback torque of the previous sampling period, which can make the change of the target braking energy feedback torque smooth, and the MCU controls the torque of the drive motor based on the target braking energy feedback torque When changing, the torque change of the driving motor is also smoother, which can reduce the impact of the positive and negative changes of the driving motor torque on the torque transmission carrier power transmission system, the gearbox gear and the rear axle gear, thereby prolonging the service life of the mechanical transmission system. The invention also discloses a braking energy feedback system and a computer-readable storage medium, which have the same beneficial effects as the above-mentioned energy control method.

Description

technical field [0001] The present invention relates to the fields of energy control and electric drive vehicles, in particular to an energy control method, a braking energy feedback system and a computer-readable storage medium. Background technique [0002] As the country pays more and more attention to environmental protection, electric vehicles have developed rapidly. Compared with traditional fuel vehicles, electric vehicles have a major advantage of braking energy feedback. Specifically, when the electric vehicle is converted from the driving state to the braking state, the electric motor can work as a generator, and the generator is used to generate electricity to drive the electric vehicle. The kinetic energy is converted into electrical energy and stored in the power battery for secondary use. [0003] In the prior art, after the VCU (Vehicle Control Unit, vehicle controller) obtains the basic energy feedback braking torque, the basic energy feedback braking torque...

AI Technical Summary

Problems solved by technology

However, when an electric drive vehicle changes from the driving state to the braking state, it involves the change of the driving motor torque from positive to negative, and the change is rapid. The axle gears cause severe impact and may produce abnormal noise, which will reduce the service life of the mechanical transmission system

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