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Electric braking torque distribution method and device for vehicle

A technology of torque distribution and electric braking, applied in the control device, electric braking system, control drive, etc., can solve the problems of unreasonable electric braking torque distribution, low energy recovery rate, etc. The effect of improved recovery rate, prevention of misalignment and rear axle side slip

Inactive Publication Date: 2019-02-05
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention proposes a vehicle electric braking torque distribution method and device, aiming to solve the problem of low energy recovery rate caused by unreasonable electric braking torque distribution in the process of energy recovery of existing electric vehicles

Method used

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  • Electric braking torque distribution method and device for vehicle
  • Electric braking torque distribution method and device for vehicle
  • Electric braking torque distribution method and device for vehicle

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Embodiment Construction

[0021] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] Method example:

[0023] refer to figure 1 , the method for distributing the electric braking torque in the energy recovery process provided by the e...

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Abstract

The invention provides an electric braking torque distribution method and device for a vehicle. The electric braking torque distribution method comprises the steps that all data parameters of the travelling work condition, vehicle body parameters, a battery management system and a motor controller of a vehicle are obtained and stored; according to all the data parameters of the actual travelling work condition, the motor controller and the battery management system of the vehicle, whether the vehicle meets the conditions of sliding energy recovery or braking energy recovery or not is judged; and in a sliding energy recovery state, the target electric braking torque distribution ratio of a front motor and a rear motor is determined to the ratio of the distance from the mass center to a front shaft to the distance from the mass center to a rear shaft. According to the electric braking torque distribution method, sliding energy recovery electric braking torque and braking energy recoveryelectric braking torque are distributed qualitatively to the front motor and the rear motor; and the energy recovery rate is increased, the driving intention of a driver is easier to achieve, the phenomena of off tracking of the vehicle due to braking and sideslip of the rear shaft are effectively prevented, and the vehicle braking stability is improved.

Description

Technical field [0001] The present invention relates to the field of automotive technology, and specifically to a vehicle electric braking torque distribution method and device. Background technique [0002] At present, the electric braking torque allocated to the front and rear motors of electric vehicles during the energy recovery process is not reasonable. Most of the electric braking torque allocated to the two motors is equally divided. If the electric braking torque of the front and rear motors is equally divided, then The actual braking effect of the vehicle will be significantly reduced. The impact is not great on high-adhesion roads, but it is likely to affect the braking stability of the vehicle on low-adhesion roads. It can be seen that the existing distribution strategy easily causes the vehicle to be electrically braked by the front and rear motors. Uncoordinated torque may cause the vehicle to deviate or the rear axle to slip. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60L15/20
CPCB60L7/10B60L15/2009B60L2240/12B60L2240/423Y02T10/64Y02T10/72
Inventor 王克坚孙乃振
Owner CH AUTO TECH CORP CO LTD
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