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Electric automobile vacuum pump control method and electronic equipment

A technology of electric vehicles and control methods, applied in the direction of brakes, vehicle components, brake safety systems, etc., can solve the problems of shortened judgment time and increased cost, and achieve the effects of reducing working time, prolonging service life, and saving judgment time

Active Publication Date: 2020-01-14
DONGFENG MOTOR CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a vacuum pump control method and electronic equipment for an electric vehicle in view of the technical problems that the existing electric vehicle needs to use an atmospheric pressure sensor and a stroke sensor to control the vacuum pump, resulting in increased cost and long judgment time and shortened service life of the vacuum pump.

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  • Electric automobile vacuum pump control method and electronic equipment
  • Electric automobile vacuum pump control method and electronic equipment
  • Electric automobile vacuum pump control method and electronic equipment

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] Such as figure 1 Shown is a working flow chart of a method for controlling a vacuum pump for electric vehicles of the present invention, including:

[0053] Step S101, detecting the running time of the vacuum pump within the preset vacuum degree judgment range, and determining the mode to be executed according to the running time;

[0054] Step S102 , switching the current execution mode of the vacuum pump to the to-be-executed mode, and adjusting the opening and closing vacuum degree threshold parameters of the vacuum pump according to the current execution mode.

[0055] Specifically, one can use figure 2 The system shown in the figure is realized, and the system includes: vehicle controller 1 (Vehicle Control Module, VCM), vacuum pump relay 2, independent electric vacuum pump 3, check valve 4, vacuum tank 5, brake master ...

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Abstract

The invention discloses an electric automobile vacuum pump control method and electronic equipment. The method comprises the following steps of detecting the operation time of a vacuum pump within a preset vacuum degree judgment range, determining a mode to be executed according to the operation time; and switching the current execution mode of the vacuum pump to the mode to be executed, and adjusting a threshold parameter of the vacuum degree of opening and closing of the vacuum pump according to the current execution mode. According to the electric automobile vacuum pump control method and electronic equipment, the working time of the vacuum pump in real time can be monitored, the using of a barometric pressure sensor does not need, and the working conditions of a plain and a plateau canbe adapted through only using a relative air pressure vacuum degree sensor. At the same time, since the judgment reference is the working time of the vacuum pump in a specific vacuum degree range, the electric automobile vacuum pump control method and electronic equipment does not need a travel sensor, and the vacuum degree range judgment method can significantly save the judgment time. Thus, theworking time of the vacuum pump is reduced and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field related to electric vehicles, in particular to a method for controlling a vacuum pump of an electric vehicle and electronic equipment. Background technique [0002] Pure electric vehicles generally need to install a vacuum pump. Since the atmospheric pressure on the plateau is very different from the atmospheric pressure on the plain, if the electric vehicle with a vacuum pump enters the plateau area, the working threshold of the vacuum degree of the vacuum pump needs to be modified to adapt to the atmospheric pressure on the plateau. If the existing electric vehicle enters the plateau, it is necessary to use an atmospheric pressure sensor to monitor the change of ambient air pressure, transmit the atmospheric pressure signal to the controller, and adjust the working threshold of the vacuum degree of the vacuum pump. However, the use of an atmospheric pressure sensor will increase the cost of the vehicle. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/72B60T17/22
CPCB60T13/72B60T17/22
Inventor 陈青平唐天禹孔红领孙伟
Owner DONGFENG MOTOR CO LTD
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