Electric vehicle motor interaction control method and device and electric vehicle

Abstract

The embodiment of the invention discloses an electric vehicle motor interaction control method and device and an electric vehicle. The electric vehicle motor interaction control method comprises the following steps: acquiring an accelerator pedal signal, acquiring a pre-output torque of an upper motor and a pre-output torque of a walking motor according to the accelerator pedal signal, and determining a motor torque coefficient of the walking motor according to the pre-output torque of the upper motor and a first mapping relation, the first mapping relation is the corresponding relation between the pre-output torque of the loading motor and the motor torque coefficient of the walking motor, and then the required torque of the walking motor is determined according to the pre-output torque of the walking motor and the motor torque coefficient of the walking motor. And the control signal is output to the motor controller of the walking motor according to the required torque of the walking motor, so that the associated control of the walking motor and the upper motor is realized, the accurate operation of a driver on the electric vehicle is facilitated, and the operation feeling and the working efficiency are improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of engineering machinery, and in particular to a method and device for interactively controlling an electric vehicle motor, and an electric vehicle. Background technique [0002] There are two main types of existing electric loader power transmission systems. One type uses a motor to replace the original fuel engine and the direct combination of the double transformer (torque converter gearbox assembly) on the original fuel vehicle. The power source of the hydraulic system and the walking system comes from a motor. The efficiency is high, but due to the low efficiency of the torque converter, the electric loader of this technical route has high energy consumption and poor endurance of the whole machine. One type adopts the bodywork motor to drive the hydraulic system, and the travel motor drives the transmission system to work. Compared with the previous type, this type of technica...

AI Technical Summary

Problems solved by technology

One type uses a motor to replace the original fuel engine and the direct combination of the double transformer (torque converter gearbox assembly) on the original fuel vehicle. The power source of the hydraulic system and the walking system comes from a motor. High efficiency, but due to the low efficiency of the torque converter, the electric loader with this technical route has high energy consumption and poor battery life

One type adopts the bodywork motor to drive the hydraulic system, and the travel motor drives the transmission system to work. Compared with the previous type, this type of technical route eliminates the torque converter, solves the shortcoming of low efficiency of the torque converter, and improves the battery life of the whole machine. Due to the separate control of the traveling motor and the body motor for this type of technical route, they are not related to each other. During the working process, it is difficult for different drivers to operate accurately, the operating experience is low, and the work efficiency is low.

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