Vacuum pump control method and device and electric car

A control method and control device technology, applied in the direction of brake transmission, brake, brake safety system, etc., can solve the problems of low reliability and safety, vacuum pump performance cannot be guaranteed, etc.

Active Publication Date: 2017-08-29
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a vacuum pump control method, device and electric vehicle to solve the problems in the prior art that the performance of the vacuum pump cannot be guaranteed, and the reliability and safety are low

Method used

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  • Vacuum pump control method and device and electric car
  • Vacuum pump control method and device and electric car
  • Vacuum pump control method and device and electric car

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Embodiment Construction

[0077] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0078] refer to figure 2 As shown, the vacuum pump control method of the embodiment of the present invention is applied to the vacuum pump system of an electric vehicle. The vacuum pump system includes a vacuum pump 1, a vacuum booster 2 connected to the vacuum pump 1, and a vacuum booster 2 for detecting the external environment pressure of the vacuum pump 1. An atmospheric pressure sensor 3 and a relative pressure sensor 4 for detecting the internal ambient pressure of the vacuum booster 2 .

[0079] Wherein, the vacuum pump system also includes a vacuum pump controller VBP 5 and a vacuum tank 6 . The atmospheric pressure sensor 3 is set together with the VBP5 to detect the external environment pressure of the vacuum pump 1 . The relative pressure s...

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Abstract

The invention provides a vacuum pump control method and device and an electric car and relates to the field of electric car control. The problems that in the prior art, the property of a vacuum pump cannot be ensured, and reliability and safety are low are solved. The method is applied to a vacuum pump system which comprises an atmospheric pressure sensor and a relative pressure sensor. The method comprises the steps that when breakdowns do not occur to the two pressure sensors, the vacuum degree of a vacuum booster is determined according to an absolute pressure value detected through the atmospheric pressure sensor and a relative pressure value detected through the relative pressure sensor, and the vacuum pump is controlled according to the vacuum degree; when the breakdowns occur to the atmospheric pressure sensor and do not occur to the relative pressure sensor, the vacuum pump is controlled according to the relative pressure value; and when the breakdowns occur to the relative pressure sensor, the vacuum pump is controlled according to braking signals. According to the scheme of the vacuum pump control method and device and the electric car, effective control over the vacuum pump under different breakdown conditions is achieved, so that the property of the vacuum pump is ensured, and reliability and safety are improved.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a vacuum pump control method and device and an electric vehicle. Background technique [0002] At present, the vacuum pump system of electric vehicles is only equipped with one pressure sensor and has only one fault operation mode. When working in an environment with high faults such as plateaus, the performance of the vacuum pump cannot be guaranteed, and the reliability and safety are low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a vacuum pump control method, device and electric vehicle to solve the problems in the prior art that the performance of the vacuum pump cannot be guaranteed, and the reliability and safety are low. [0004] In order to solve the above technical problems, an embodiment of the present invention provides a vacuum pump control method, which is applied to a vacuum pump system of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/72B60T17/02B60T17/22
CPCB60T13/72B60T17/02B60T17/22B60T2270/40
Inventor 王松涛易迪华秦兴权王金龙刘成祺李从心
Owner BEIJING ELECTRIC VEHICLE
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