Electric vehicle shifting method, device, storage medium, system and electric vehicle

Abstract

The invention discloses an electric vehicle shifting method, equipment, storage medium, system and the electric vehicle. The method includes: determining the target gear through the vehicle gear shift curve according to the accelerator opening, vehicle speed, and driver demand and judging the type of the gear shift process; The torque on the wheel, the maximum adhesion torque of the tire, and the torque on the wheel of the original gear, and obtain the motor efficiency of the original gear and the motor efficiency of the target gear through the motor efficiency curve; according to the type of the shift process, the on-wheel torque of the target gear The torque, the maximum adhesion torque of the tire, the torque on the wheel of the target gear, the torque on the wheel of the original gear, the motor efficiency of the original gear and the motor efficiency of the target gear, execute the corresponding gear intervention strategy. The gear intervention control strategy of multi-gear electric vehicles is optimized, which can obtain a good driving experience.

Description

technical field [0001] The present invention relates to the technical field of new energy vehicles, and more specifically, to an electric vehicle gear shifting method, electronic equipment, a storage medium, an electric vehicle gear shifting system, and an electric vehicle applying the electric vehicle gear shifting system. Background technique [0002] At present, electric vehicles have become the general trend of the development of the automobile industry due to their outstanding advantages such as zero emission, low noise, and abundant sources of electric energy. [0003] Multi-gear electric vehicles can effectively improve the performance of electric vehicles, reduce the cost of electric vehicles, and improve the overall cost performance. Using a multi-speed transmission can better balance the power and economy of the vehicle at the same time, and can also significantly reduce the requirements for the maximum torque and maximum speed of the drive motor and the requiremen...

AI Technical Summary

Problems solved by technology

[0008] However, in this shifting strategy, the sudden increase of torque on the wheels and the slipping of the driving wheels during the power downshifting process are not considered, and at the same time, when the torque on the wheels of different gears is equal, the low The case of low working efficiency of the gear motor

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