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A braking energy recovery control method

A braking energy recovery and control method technology, which is applied in the direction of brakes, electric braking systems, electric vehicles, etc., can solve the problem of uniform and falsely high pricing, and achieve increased total braking torque, fast and smooth total braking torque, and braking The process is stable and smooth

Active Publication Date: 2021-12-17
DONGFENG OFF ROAD VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain the maximum benefit, foreign companies form an alliance, the prices are consistent and seriously inflated, and they refuse to disclose the software code and accept software evaluation. We can only get the "black box" in kind

Method used

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  • A braking energy recovery control method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, it is the control strategy diagram of this embodiment. After the car is started, if it does not enter the braking condition, the total braking torque of the car at this time is 0, wherein the electric braking power is 0, and the master cylinder brake hydraulic pressure is 0, when the brake signal appears, the car enters the braking condition, and the total braking torque needs to be adjusted.

[0027] The brake light switch signal is input to the vehicle controller (hereinafter referred to as VCU), and the VCU judges whether it is in the braking condition based on this; the brake pedal angle sensor voltage signal is input to the VCU, and the VCU calculates the brake pedal stroke accordingly, and based on the Target brake deceleration a set by brake pedal feel 目标 Calculate the target braking decelera...

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Abstract

The invention relates to the technical field of automobile control methods, in particular to a braking energy recovery control method. When the car is under braking conditions, the relevant signals are used to judge whether the total braking torque of the previous cycle has been adjusted, so as to determine the total braking torque of this cycle; when the vehicle controller does not receive the working flag signal , obtain the current target braking deceleration and current braking deceleration of the vehicle, obtain the first limit value and second limit value of this braking cycle through the current target braking deceleration, and compare the current braking deceleration with the first limit value value and the second limit value, the vehicle controller assigns the current cycle electric brake and the current cycle hydraulic brake under the premise of prioritizing the electric brake according to the comparison result; the first limit value is smaller than the second limit value. In the braking energy recovery of the present invention, electric braking is applied first, and the insufficient part is supplemented by hydraulic braking, so that the energy in the braking process is recovered to the greatest extent, the energy recovery is more efficient, and the vehicle is smoother in the braking process.

Description

technical field [0001] The invention relates to the technical field of automobile control methods, in particular to a braking energy recovery control method. Background technique [0002] my country's research in the field of braking energy recovery technology started late, and the independent technology has not yet achieved substantial breakthroughs, and the core technology is still in the hands of foreign companies. In order to obtain the maximum benefit, foreign companies formed an alliance, and the prices were unanimously inflated, and they refused to disclose the software code, and refused to accept software evaluation. We can only get the "black box" in kind. [0003] In order to avoid technical constraints and reduce procurement costs, it is of great significance to independently invent control strategies. Contents of the invention [0004] The purpose of the present invention is to solve the above-mentioned deficiency of the independent technology in the backgroun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/171B60T8/32B60L7/10B60L7/18
CPCB60T8/171B60T8/32B60L7/10B60L7/18
Inventor 徐午阮仁新黄建国薛琼侯鹏伟
Owner DONGFENG OFF ROAD VEHICLE CO LTD
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