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Electric vehicle and distributed torque distribution method and device thereof

A technology of torque distribution and distribution method, applied in electric vehicles, electrical devices, control devices, etc., can solve problems such as affecting the cruising range of electric vehicles, poor economy of torque control schemes, etc., and achieve optimal torque distribution. , the effect of improving the cruising range

Active Publication Date: 2021-12-24
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an electric vehicle and its distributed torque distribution method and device to solve or partly solve the problem that the torque control scheme of electric vehicles currently using distributed drive is not economical and affects the cruising range of electric vehicles. technical issues

Method used

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  • Electric vehicle and distributed torque distribution method and device thereof
  • Electric vehicle and distributed torque distribution method and device thereof
  • Electric vehicle and distributed torque distribution method and device thereof

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Embodiment Construction

[0053] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings. Throughout the specification, unless otherwise specified, terms used herein should be understood as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, this specification shall take precedence. Unless otherwise specified, various equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0054] In order to improve the economy of torque control of distributed drive electric vehicles and increase their cruising range, the present invention provides a me...

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Abstract

The invention discloses an electric vehicle distributed torque distribution method which comprises the following steps: in the driving process of a vehicle, obtaining the torque required by a current driver and the current rotating speed of a target motor, wherein the target motor is a front axle motor or a rear axle motor of the vehicle; determining a target torque distribution coefficient according to the current rotating speed, the current driver demand torque and a mapping relation, wherein the mapping relation is a corresponding relation among the motor rotating speed, the driver demand torque and the torque distribution coefficient, and the target torque distribution coefficient is a torque distribution coefficient which enables the total efficiency of the driving system of the vehicle to meet a set condition; and according to the target torque distribution coefficient and the torque required by the current driver, carrying out torque distribution of the vehicle. According to the torque distribution method, the energy economy of the electric vehicle can be remarkably improved.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, in particular to an electric vehicle and a distributed torque distribution method and device thereof. Background technique [0002] With the continuous deepening of electric vehicle technology research, the layout structure of electric vehicle drive system has gradually developed from a single power source centralized drive system to a multi-power source distributed drive system. The main structural feature of distributed drive electric vehicles is that the drive motor is directly installed in the drive wheel (hub motor) or near the drive wheel (wheel side motor), and the transmission components such as the shift control device and the clutch are eliminated, and the mechanical transmission chain is eliminated. It has the outstanding advantages of short drive transmission chain, high transmission efficiency, and compact structure, and has gradually become a research hotspot in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/32
CPCB60L15/20B60L15/32B60L2220/42B60L2220/44B60L2240/421B60L2240/423B60L2250/26Y02T10/72
Inventor 王念秦博张泽阳赵春来王秋来
Owner DONGFENG MOTOR GRP
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