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Compound braking method

A compound braking and electric braking technology, which is applied in electric braking systems, electric vehicles, transportation and packaging, etc., can solve the problems of poor braking sensitivity and achieve high braking comfort, smooth braking, and high braking sensitivity. Good results

Active Publication Date: 2015-09-09
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a composite braking method to solve the problem of poor braking sensitivity of the traditional composite braking method

Method used

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Examples

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Effect test

Embodiment 1

[0033] A composite braking method, the composite braking force is equal to the sum of the electric braking force and the frictional braking force, the braking is performed according to the braking demand of the vehicle, and the composite braking force remains unchanged.

[0034] The technical means involved in the above technical solution will be described in detail below in conjunction with the accompanying drawings.

[0035] Such as figure 2 Shown is a schematic structural diagram of the composite braking system, and the vehicle controller simultaneously controls and connects the braking system and the motor controller. When a general hybrid vehicle brakes according to the braking requirements of the vehicle, its braking is mostly compound braking, which includes electric braking and friction braking, such as image 3 As shown, among them: electric braking is to feed back the energy of wheel rotation to the on-board energy system to achieve the purpose of braking, and fric...

Embodiment 2

[0037] Continue to elaborate on the basis of Example 1.

[0038] On the premise that the composite braking force remains unchanged, when braking starts, increase the frictional braking force to the first set value, then gradually decrease the frictional braking force, and gradually increase the electric braking force.

[0039] The technical means involved in the above technical solution will be described in detail below in conjunction with the accompanying drawings.

[0040] Such as image 3 As shown, when the vehicle is combined braking, the compound braking force is first distributed to the frictional braking force, and the frictional braking force rises to a certain value in a short time, then the frictional braking force gradually decreases, and the electric braking force gradually increases. During braking, the compound braking force remains unchanged.

[0041] At the beginning of braking, since the braking force is achieved by depressing the brake pedal, depressing the...

Embodiment 3

[0055] The difference between this embodiment and Embodiment 2 is that when the frictional braking force gradually decreases and the electric braking force gradually increases, it decreases or increases nonlinearly, for example, it changes according to a certain curve, but the overall The braking force remains unchanged, such as Figure 6 shown.

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Abstract

The invention relates to a compound braking method. Compound braking force is the sum of electric braking force and friction braking force, and when a vehicle is braked according to the braking demands of the vehicle, the composite braking force remains unchanged. In the braking process, the total braking force remains unchanged until the braking is finished, and the constant braking force enables the braking to be stable, so that the smoothness and the stability of the vehicle during braking are improved, and the braking comfort is better.

Description

technical field [0001] The invention relates to a composite braking method, which belongs to the field of automobile braking control. Background technique [0002] Under the background of global energy shortage and advocating the use of clean energy, new energy vehicles have emerged as the times require. Combined with the domestic actual situation, the government vigorously promotes new energy buses, intercity buses and other new energy buses. New energy vehicles can be divided into pure electric vehicles, plug-in vehicles, hybrid vehicles, fuel cell vehicles and other forms. The braking of new energy vehicles is composed of friction braking and electric braking. Electric braking is energy recovery braking, which can use the drive motor to charge the vehicle power supply, which can greatly reduce the energy consumption of the vehicle and reduce air pollutants. emissions. [0003] Traditional compound braking methods are: [0004] 1. Superimpose an electric braking force ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/26
Inventor 张永强彭能岭李振山王永秋李钰锐
Owner ZHENGZHOU YUTONG BUS CO LTD
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