Method for improving endurance mileage of electric vehicle

Abstract

The invention discloses a method for improving endurance mileage of an electric vehicle, the electric vehicle is provided with an energy-saving endurance mode and a conventional driving mode, an intermediate starting rotating speed is set between an initial rotating speed and a rated rotating speed, and the intermediate starting rotating speed is larger than the initial rotating speed and smallerthan the rated rotating speed; the control method of the energy-saving endurance mode comprises the following steps: S10) when the electric vehicle is in a first endurance starting mode, the controller sets the working current of the motor to be greater than the rated current; S20) when the electric vehicle is in a second endurance starting mode, the controller sets the working current of the motor to be equal to the rated current; S30) when the electric vehicle is in the endurance operation mode, the controller sets the working current of the motor to be smaller than the rated current. By selectively setting the energy-saving endurance mode and the conventional driving mode, when the electric vehicle is in the energy-saving endurance mode, the endurance mileage of the electric vehicle canbe obviously increased, and the method has universality and is particularly suitable for being applied to electric two-wheeled vehicle products.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to a method for increasing the cruising range of the electric vehicle, which is especially suitable for application in electric two-wheeled vehicles. Background technique [0002] The cruising range of electric vehicles is the core factor determining the performance of electric vehicles, and people have been hoping to break through the cruising range of electric vehicles through various technical means. It is common knowledge that the factors that determine the cruising range of an electric vehicle mainly include the efficiency performance of the electric vehicle motor itself and the capacity of the battery. However, on the basis of maintaining the same motor efficiency and the same battery capacity, how to further improve the electric vehicle The cruising range is a technical problem in this field. [0003] The patent of invention with the publication number CN10929193...

AI Technical Summary

Problems solved by technology

However, following the applicant's targeted research and development and detection, it was found that after the start command is determined, its working current is in a fixed state after it is determined (the working current corresponding to the start command is preset according to the target driving curve), If the working current is set too high, it will greatly consume the battery power, which will have a significant negative impact on the cruising range of the electric vehicle. If the working current is set too small, it will have a negative impact on the start-up acceleration performance. Not only is it not conducive to the start-up acceleration experience, but also the start-up process will also cause more battery power. Therefore, the target drive curve of the existing technology usually sets the rated current within the applicable value range, and takes into account the needs of accelerated start-up and steady-state operation. , however, the actual set value is considered unilaterally. It is neither the optimal solution to realize the fast start requirement during accelerated startup, nor the optimal solution to realize power-saving operation during steady-state operation; After verification, the technical solution of this application was finally proposed

Images