Method for setting target torque of motor applicable to pure electric vehicle

Abstract

The invention discloses a method for setting target torque of a motor applicable to a pure electric vehicle. The method is characterized in that: a general controller serves as a control core of the pure electric vehicle and is a main executor of a general control strategy. The method comprises the following steps that: the general controller judges a driving intention of a driver by acquiring driver signals of an accelerator pedal, a brake pedal, a gear switch and the like, confirms a traction or brake mode, performs information interaction with a motor controller and a battery management system, calculates target traction or brake torque, executes a corresponding general control strategy and outputs corresponding torque information and directional signals of the motor; and a related control instruction is transmitted to the motor controller, and the motor controller controls the motor to work under drive or brake working conditions according to the control instruction, so that energy distribution of the pure electric vehicle from an energy storage system to a motor driving system is effectively controlled, and the energy storage system, the motor driving system and the like are correspondingly protected.

Description

technical field [0001] The invention relates to a control method of an electric vehicle, in particular to a torque setting method for a vehicle controller of a pure electric vehicle to a motor controller, which is suitable for the control of the whole vehicle of a pure electric vehicle. Background technique [0002] The research and development of modern electric vehicles is a complex system engineering. Its theoretical basis is to organically combine automobile technology, motor technology, drive technology, power electronics technology, energy storage technology and modern control theory to realize the integration and optimization of the system. , and its key application technologies can be summarized into three main parts: drive motor and its control technology, powertrain control technology, and battery energy management. [0003] The vehicle controller is responsible for the powertrain control technology, the most important of which is the vehicle drive technology. As ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the motor controller of the current pure electric vehicle cannot directly collect the relevant information sent by the battery management system, and can only be forwarded by the vehicle controller, which may lead to incomplete battery information collected by the motor controller, and As a result of the problem that it cannot effectively protect the battery system, a vehicle controller for a pure electric vehicle is proposed to set the torque of the motor controller, including the driving torque and braking torque of the traction motor under different working modes The setting, limitation and protection measures of the pure electric vehicle, and then realize the effective control of the energy distribution from the energy storage system to the motor drive system of the pure electric vehicle, and carry out corresponding protection for the energy storage system and the motor drive system

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