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Brake method and brake vacuum system of electric motor vehicle

A technology for electric vehicles and vacuum systems, which is applied in the direction of braking transmissions, brakes, vehicle components, etc. It can solve the problems of poor user experience and low service life of vacuum pumps, so as to prevent the reduction of service life, avoid power consumption, and reduce noise Effect

Inactive Publication Date: 2010-09-29
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low service life of the vacuum pump and poor user experience in the prior art, an embodiment of the present invention proposes a braking method and a braking vacuum system for an electric vehicle

Method used

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  • Brake method and brake vacuum system of electric motor vehicle
  • Brake method and brake vacuum system of electric motor vehicle
  • Brake method and brake vacuum system of electric motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The first embodiment of the present invention provides a braking method for an electric vehicle, and the process is as follows figure 1 Shown, including:

[0039] Step 101: Detect the pressure in the vacuum tank in real time;

[0040] Step 102: Turn on / off the vacuum pump according to the pressure in the vacuum tank.

[0041] The embodiment of the present invention proposes an electric vehicle braking method system, which can control the vacuum pump to adjust the vacuum pressure in the vacuum tank according to the actual pressure value in the vacuum tank, so as to prevent the vacuum pump from being kept in the starting state and the service life is reduced. , And can avoid power consumption, and reduce noise to improve user experience.

Embodiment 2

[0043] The second embodiment of the present invention provides a braking method for an electric vehicle, and the process is as follows figure 2 Shown, including:

[0044] Step 201: Set a pressure sensor in the vacuum tank;

[0045] Step 202: Detect the pressure in the vacuum tank in real time;

[0046] Step 203: Turn on / off the vacuum pump according to the pressure in the vacuum tank.

[0047] Among them, step 203 includes multiple ways to control the opening / closing of the vacuum pump; one is to control the vacuum pump according to a preset value; the other is to control the vacuum pump according to two preset values.

[0048] For example: when the pressure value read by the pressure reading unit is higher than the preset value, a control signal is sent to the pump control unit to control the operation of the vacuum pump; when the pressure value read by the pressure reading unit is low At the preset value, a control signal is sent to the pump control unit to control the vacuum pump t...

Embodiment 3

[0056] The third embodiment of the present invention proposes a brake vacuum system for electric vehicles, which has a structure such as image 3 As shown, a vacuum pump 1 and a vacuum tank 2 are included, and the vacuum pump 1 and the vacuum tank 2 are conducted through a vacuum tube 3; the vacuum tank 2 includes a pressure sensor 4 for detecting the pressure of the vacuum tank 2; further including:

[0057] The control module 5 is electrically connected to the vacuum pump 1 and electrically connected to the pressure sensor 4 to control the opening / closing of the vacuum pump 1 according to the data of the pressure sensor 4.

[0058] The embodiment of the present invention proposes a brake vacuum system for an electric vehicle, which can control the vacuum pump to adjust the vacuum pressure in the vacuum tank according to the actual pressure value in the vacuum tank, so as to prevent the vacuum pump from being kept in the starting state and the service life is reduced , And can avoi...

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PUM

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Abstract

The invention provides a brake method and a brake vacuum system of an electric motor vehicle and belongs to the field of electron control. The system in the embodiment of the invention comprises a vacuum pump and a vacuum tank which are communicated through a vacuum pipe, wherein the vacuum tank comprises a pressure sensor for detecting the pressure of the vacuum tank; the system also comprises a control module which is electrically connected with the vacuum pump and the pressure sensor and is used for controlling the on-off of the vacuum pump according to data of the pressure sensor. The method in the embodiment of the invention comprises the steps of detecting the pressure in the vacuum tank in real time and opening and closing the vacuum pump according to the pressure in the vacuum tank. The embodiment of the invention can control the vacuum pump to adjust the vacuum pressure in the vacuum tank according to the actual pressure in the vacuum tank so as to prevent the phenomenon that the service life is shortened because the vacuum pump is always kept in a starting state, can avoid the power consumption and reduce the noise so as to improve the experience feeling of users.

Description

technical field [0001] The invention relates to the field of electronic control, in particular to an electric vehicle braking method and a braking vacuum system. Background technique [0002] With the depletion of non-renewable energy and the seriousness of environmental pollution, environmental protection products have been increasingly favored by all walks of life in recent years, and new energy vehicles have also become the focus of research by various automobile manufacturers. With the development of power batteries, hybrid vehicles and electric vehicles have become a relatively common development direction. Existing electric vehicles generally use a vacuum brake system, including a vacuum pump, to provide a vacuum source for the vacuum booster of the brake system. In the prior art, the vacuum tube of the vacuum pump is connected to the vacuum booster and the vacuum tank. When the driver depresses the brake pedal, the vacuum in the vacuum tank decreases. When the vacu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/52B60T13/72
Inventor 李芳
Owner CHERY AUTOMOBILE CO LTD