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Pure electric vehicle emergency brake control method, vehicle control unit and control device

A vehicle controller, emergency braking technology, applied in the direction of brakes, etc., can solve problems such as affecting braking safety

Active Publication Date: 2020-11-17
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the front VCU releases all the negative torque that can be generated, the later ESC intervention time will affect the braking safety

Method used

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  • Pure electric vehicle emergency brake control method, vehicle control unit and control device
  • Pure electric vehicle emergency brake control method, vehicle control unit and control device
  • Pure electric vehicle emergency brake control method, vehicle control unit and control device

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Embodiment Construction

[0048] Reference will now be made in detail to specific embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover alterations, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described here can all be realized by any functional block or functional arrangement, and any functional block or functional arrangement can be realized as a physical entity or a logical entity, or a combination of both.

[0049] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embo...

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PUM

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Abstract

The invention discloses a pure electric vehicle emergency brake control method, a vehicle control unit and a control device, and relates to the field of vehicle emergency brake safety. The method comprises the steps that when handshaking with an advanced driving assistance system succeeds, sending a negative torque parameter to the advanced driving assistance system; receiving an effective negative torque request initiated by the advanced driving assistance system, responding and braking; after the preset time, sending the new negative torque capacity again, and receiving a new effective negative torque request and responding to for braking until a braking switching request is received; and when switching to request braking of the vehicle body electronic stability control system, controlling the advanced driving assistance system to set the braking energy recovery torque capacity of the vehicle body electronic stability control system to be zero, controlling the vehicle body electronicstability control system to perform mechanical braking, and stopping the crawling function. Mechanical braking is directly carried out during ESC braking, braking energy recovery is not carried out,and the potential safety hazard that emergency braking cannot be carried out due to the fact that the charging and discharging capacity of a battery is low is avoided.

Description

technical field [0001] The invention relates to the field of emergency braking safety of pure electric vehicles, in particular to a method for controlling emergency braking of pure electric vehicles, a vehicle controller and a control device. Background technique [0002] With the development of automobile technology, the application of emergency braking system has become more and more extensive. All major automobile brands in the world are making efforts to install emergency braking as standard equipment on all models as soon as possible. Generally speaking, the automatic emergency braking system uses sensors such as radar, camera or laser to detect an impending collision, and can automatically activate the braking system to slow down the speed of the vehicle or apply emergency braking when the driver does not take action in time. Most car crashes are inseparable from the driver's own error. The emergency braking system is always alert and detects the road conditions ahead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/17B60T8/1755
CPCB60T8/17B60T8/1755
Inventor 赵田芳杨柳春余绍鹏雷雪马莎
Owner DONGFENG MOTOR CORP HUBEI
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