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Steering control method and device of electric vehicle

An electric vehicle and steering control technology, which is applied in the automotive field to achieve the effects of reducing energy consumption, increasing driving range, and improving energy recovery efficiency

Active Publication Date: 2021-10-29
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a steering control method and device for an electric vehicle, which solves the problem of how to reduce the energy consumption in the steering process while realizing the stable steering of the electric vehicle driven by four-wheel hub motors

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  • Steering control method and device of electric vehicle
  • Steering control method and device of electric vehicle
  • Steering control method and device of electric vehicle

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Embodiment Construction

[0063] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0064] Such as figure 1 As shown, the embodiment of the present invention provides a schematic structural diagram of an electric vehicle. Each wheel of the electric vehicle is provided with an in-wheel motor, and the in-wheel motors on the two front wheels are respectively connected with energy storage components.

[0065] Specifically, it may include a first hub motor belt brake assembly 11 arranged in the left front wheel hub of an electric v...

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Abstract

The invention discloses a steering control method and device of an electric vehicle, each wheel of the electric vehicle is provided with a hub motor, the hub motor of the front wheel is connected with an energy storage component, and the method comprises the steps that when it is determined that steering control is executed on the electric vehicle, the turning angle change rate of a steering wheel is obtained; according to the turning angle change rate, a target control mode is determined, and the target control mode is a differential steering control mode or an electric control power-assisted steering control mode; when it is determined that the target control mode is the differential steering control mode, the energy storage state of an energy storage component is obtained, and the required braking torque of a steering inner side wheel and the required driving torque of a steering outer side wheel are obtained; and according to the energy storage state, the braking torque of the steering inner side wheel and the driving torque of the steering outer side wheel are controlled to be distributed, so that the required braking torque and the required driving torque are generated. According to the method, stable steering is achieved, meanwhile, energy consumption in the steering process is reduced, and the driving distance of the whole vehicle is increased.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a steering control method and device for an electric automobile. Background technique [0002] At present, in-wheel motor-driven distributed pure electric vehicles are directly driven by in-wheel motors without a reduction mechanism, eliminating the need for traditional transmission shafts and other components, and improving the efficiency of the transmission system. It is an ideal driving method for electric vehicles. There are no mass-produced models of hub-driven distributed pure electric vehicles currently on the market, and they are still in the research and development stage. [0003] Since the dynamic characteristics of electric vehicles driven by four-wheel hub motors have changed greatly compared with traditional vehicles, traditional steering control methods cannot be directly used, and pure electric vehicles are powered by power battery packs, and the energy of bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D11/00B62D11/04B60L15/20B60L15/32
CPCB62D11/003B62D11/04B60L15/2036B60L15/2045B60L15/32B60L2220/44B60L2240/423Y02T10/72
Inventor 刘杰李波沈海燕李国红杜晓丰马涛
Owner BEIJING ELECTRIC VEHICLE
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