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Vehicle braking control method, device and wire-assisted braking system

A vehicle braking and braking system technology, applied in the vehicle field, can solve problems such as motor heating, achieve the effects of reducing heat loss, reducing motor torque, and reducing calorific value

Active Publication Date: 2021-06-04
精诚工科汽车系统有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, the present invention aims to propose a vehicle braking control method, device, and power-by-wire braking system to solve the problem of motor heating caused by power generation for a long time after the motor is locked.

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  • Vehicle braking control method, device and wire-assisted braking system
  • Vehicle braking control method, device and wire-assisted braking system
  • Vehicle braking control method, device and wire-assisted braking system

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Embodiment Construction

[0053] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0054] In addition, the power-by-wire braking system mentioned in the embodiments of the present invention includes an electro-hydraulic power-by-wire braking system, an EMB braking system, and a hybrid power-by-wire braking system, wherein the hybrid power-by-wire braking system The system refers to a hybrid brake-by-wire technology that partly uses the electro-hydraulic power-by-wire brake system and partly uses the EMB brake system. The embodiment solution of the present invention is applied to the power-by-wire brake system of the vehicle, so before introducing the details of the embodiment solution of the present invention, the structure of the electro-hydraulic power-by-wire brake system is introduced here to facilitate the understanding of the following. It should be noted that the electronic hydraulic po...

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Abstract

The invention relates to the technical field of vehicles, and provides a vehicle braking control method and device, and a wire-controlled power-assisted braking system. The method of the present invention is applied to a vehicle with a power-by-wire braking system, and includes: when the driver depresses the brake pedal when the vehicle is stationary and keeps the position of the brake pedal unchanged, controlling the power-by-wire braking system to enter In the first power assist holding stage, in the first power assist holding stage, the braking pressure and motor torque of the wire-controlled braking system remain unchanged; and when the duration of the first power assist holding stage exceeds a preset time threshold, the wire-controlled braking system is controlled The power-assisted braking system enters the second power-assisted holding stage. In the second power-assisted holding stage, the motor torque of the wire-controlled power-assisted braking system remains unchanged after being reduced, and the reduced motor torque can keep the braking pressure unchanged. The invention ensures the constant pedal feeling of the driver by maintaining the braking pressure of the braking system, and reduces the heating of the motor by reducing the motor torque of the braking system.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle braking control method, device and wire-controlled power-assisted braking system. Background technique [0002] With the development of electrification and intelligence of vehicles, new requirements are constantly put forward for the braking system. Correspondingly, the power-by-wire braking system, including electro-hydraulic power-by-wire braking system, EMB (Electro-Mechanical Brake) braking system and hybrid power-by-wire braking system, will gradually replace the traditional vacuum booster and become the future The direction of brake system development. The design of the existing power-by-wire braking system includes a motor and an ECU (Electronic Control Unit, electronic control unit). When the driver steps on the brake pedal for a long time, the motor output torque of the braking system is required to provide braking pressure. When the motor is in a locked-rot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/74B60T7/06
CPCB60T7/06B60T13/745
Inventor 高三星王瑞华张克谦乔君辉赵辉管艳艳高阳王川李浩
Owner 精诚工科汽车系统有限公司
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