Electric vehicle shifting method and equipment, storage medium, system and electric automobile

Abstract

The invention discloses an electric vehicle shifting method and equipment, a storage medium, a system and an electric automobile. The method comprises the steps of determining a target gear and judging the type of the gear shifting process according to the throttle opening, the automobile speed and driver demands through a vehicle gear shifting curve; calculating the wheel torque of a target gear,the maximum attachment torque of a tire and the wheel torque of the original gear according to the transmission ratio of the original gear and the target gear and the tire radius, and acquiring the motor efficiency of the original gear and the motor efficiency of the target gear through a motor efficiency curve; and executing corresponding gear intervention strategies according to the type of thegear shifting process, the wheel torque of the target gear, the maximum attachment torque of the tire, the wheel torque of the target gear, the wheel torque of the original gear, the motor efficiencyof the original gear and the motor efficiency of the target gear. Multi-gear electric automobile gear intervention control strategies are optimized, and a good driving experience can be obtained.

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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