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Braking control method and device of electric vehicle

A brake control and electric vehicle technology, which is applied in the direction of control devices, electric vehicles, electric braking systems, etc., can solve the problems of less energy recovery and low energy utilization

Inactive Publication Date: 2017-01-11
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, electric vehicles have no clear regulations on the distribution of hydraulic braking force and regenerative braking force. The main focus is on braking stability and safety. Energy recovery is extremely small and energy utilization is low.

Method used

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  • Braking control method and device of electric vehicle
  • Braking control method and device of electric vehicle
  • Braking control method and device of electric vehicle

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Embodiment Construction

[0091] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0092] In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" in this article should not be interpreted as a more preferred or more advantageous Technical solutions.

[0093] In order to make the drawings concise, the figures in each figure only schematically show the relevant parts of the present invention, and do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

[0094] Herein, ...

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Abstract

The invention discloses a braking control method of an electric vehicle. The braking control method comprises: receiving a braking strength signal from a braking pedal opening degree sensor and a wheel speed signal from a wheel speed sensor; according to the wheel speed signal, judging whether a vehicle speed is smaller than a first vehicle speed threshold value or not; if so, finishing a flow; otherwise, judging whether braking strength of a braking pedal is greater than or equal to a braking strength threshold value or not according to the braking strength signal and judging whether the vehicle speed is greater than or equal to a second vehicle speed threshold value or not according to the wheel speed signal; if two conditions are both met, controlling the electric vehicle to be subjected to braking in a hydraulic braking force distribution mode; if only one condition is met, controlling the electric vehicle to be subjected to braking in a compound braking force distribution mode. According to the braking control method of the electric vehicle, provided by the invention, under the condition of guaranteeing the braking stability, braking energy is sufficiently recycled and the recycling of the energy is realized. The invention further discloses a braking control device of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicle braking, in particular to a braking control method and device for an electric vehicle. Background technique [0002] The most notable advantage of electric vehicles is that regenerative braking energy can be recovered during braking, hydraulic braking force and regenerative braking force can be distributed, braking energy can be fully recovered under small braking intensity, and regenerative braking torque It can fully meet the driver's braking requirements; in the case of high braking intensity or emergency braking, the braking stability and safety are the main focus, and the regenerative braking force is added, which not only reduces the hydraulic braking burden, but also makes the vehicle's total braking Torque fluctuations are reduced and part of the braking energy can be recovered at the same time. [0003] At present, electric vehicles have no clear regulations on the distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/18B60L7/26B60T8/32
CPCB60L7/18B60L7/26B60L2240/461B60T8/32B60T2270/60
Inventor 陆群黄亮
Owner CH AUTO TECH CORP CO LTD
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