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Dual-motor electric vehicle and method and device for controlling motor torque thereof

An electric vehicle and torque control technology, which is applied in the direction of control devices, electric vehicles, and electrical devices, can solve the problems of insufficient vehicle driving and over-discharge of power batteries, and achieve the effect of simple, reliable and robust control methods

Active Publication Date: 2021-11-02
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, it is very important to control the motor torque during the driving process of the vehicle. If the control of the motor torque is not appropriate, it will lead to problems such as insufficient vehicle driving or over-discharge of the power battery.

Method used

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  • Dual-motor electric vehicle and method and device for controlling motor torque thereof
  • Dual-motor electric vehicle and method and device for controlling motor torque thereof
  • Dual-motor electric vehicle and method and device for controlling motor torque thereof

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] It should be noted that, in the related art, the torque requested by the driver is usually directly taken as the total motor requested torque to calculate the requested torque of the front axle motor and the requested torque of the rear axle motor. However, the problem in the related art is that when the request torque of the front axle motor and the request torque of the rear axle motor are obtained directly through the driver request torque, in order to make the torque of the front axle motor and the torque of the rear ax...

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Abstract

The present invention provides a dual-motor electric vehicle and a method and device for controlling the motor torque thereof, wherein the method includes: obtaining the total motor limit torque and the driver's request torque of the electric vehicle, and according to the minimum of the total motor limit torque and the driver's request torque value, determine the total motor demand torque of the electric vehicle; obtain the motor demand torque according to the total motor demand torque and the motor distribution coefficient of the electric vehicle; determine the first motor request of the electric vehicle according to the first motor demand torque and the first motor limit torque Torque; according to the second motor demand torque and the second motor limit torque, determine the second motor demand torque of the electric vehicle, so as to realize the protection of the motor and battery system without limiting the reasonable demand torque of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a dual-motor electric vehicle and a motor torque control method and device thereof. Background technique [0002] The power system of a pure electric vehicle includes a front motor, a front reducer, a front motor controller, a rear motor, a rear reducer, a rear motor controller, a high-voltage battery pack, a battery management system, and a vehicle controller. Among them, the vehicle controller is used to control the torque of the motor in the power system, monitor the state of the power system, and ensure the safe and reliable operation of the vehicle system. [0003] Therefore, it is very important to control the motor torque during the driving process of the vehicle. If the control of the motor torque is not appropriate, it will lead to problems such as insufficient vehicle driving or over-discharge of the power battery. Contents of the invention [0004] The pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B60L15/32
CPCB60L15/20B60L15/32B60L2220/42B60L2240/12B60L2240/423Y02T10/72
Inventor 孔令安
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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