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Electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles

A technology of electric power assist and electric vehicles, applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve the problems of single decoupling, complex power assist assembly mechanism, poor pedal feel retention, etc., and achieve simple mechanism structure , Wide adaptability of hardware equipment, and the effect of improving driving safety

Active Publication Date: 2018-06-08
JILIN UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the above-mentioned electric power-assisted braking system, such as complex power-assisted assembly mechanism, single decoupling situation, and poor pedal feel retention, the present invention proposes an electric power-assisted braking system suitable for electric vehicles with any decoupling degree of freedom. Braking System

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  • Electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles
  • Electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles
  • Electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles

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Embodiment Construction

[0035] An electric power-assisted braking system suitable for electric vehicles with any decoupling degree of freedom, including: brake pedal assembly 1, electric power assist assembly 2, liquid storage tank 3, brake master cylinder 4, decoupling device assembly 5. HCU 6, wheel cylinder 7, electronic control unit 8, booster motor assembly 9.

[0036] An electric power-assisted braking system suitable for electric vehicles with any degree of decoupling freedom, the brake pedal assembly 1 includes a brake pedal 101 , a pedal stroke sensor 102 , a pedal push rod 103 and a pedal shaft support 104 . The direction in which the pedal force of the brake pedal 101 is input is defined as the front. The top of the brake pedal 101 is connected to the rotating shaft bracket 104 through a hinge, and the pedal travel sensor 102 is also installed at the joint between the brake pedal 101 and the rotating shaft bracket 104 . The front end of the pedal push rod 103 is connected with the middle ...

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Abstract

The invention provides an electric power brake system with arbitrarily decoupled degrees of freedom for electric vehicles to solve the problems that the existing electric power brake system has a complex assistance mechanism, a single decoupled situation, and a poor sense of maintaining the pedal. The brake pedal assembly is connected with the brake master cylinder through the electric power assembly. A decoupled device assembly is arranged on the pipeline between the brake master cylinder and the HCU, and the power motor assembly is connected with the electric assist assembly. When decoupled,the front and rear axle brake friction can be properly allocated through the control of the solenoid valve, thus achieving decoupling of any degree of freedom and ensuring that the car can maintain agood braking posture even in the case of regenerative braking; under any decoupled conditions, the control of the power motor can ensure that the brake pedal feel remains the same, the driver's senseof road cannot be affected when braking, no additional failure backup mechanism is required, and the vehicle can be slowed down or stopped through human power when the system fails to improve drivingsafety.

Description

technical field [0001] The invention belongs to the technical field of automobile braking systems, in particular to an electric power-assisted braking system suitable for electric vehicles with any decoupling degree of freedom. Background technique [0002] With the development of technology in the automotive field, the traditional hydraulic braking system can no longer meet people's requirements for high safety and high comfort vehicle performance. Especially in recent years, with the development trend of automobile electrification and intelligence, higher requirements are put forward for the automobile braking system. For electric vehicles, in order to increase the cruising range, the braking system must have regenerative braking capability, which requires the braking system to have the ability to decouple the brake pedal from the frictional braking force; for intelligent vehicles, it is required that the vehicle must have Active braking function. Obviously, the traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74
CPCB60T13/745
Inventor 赵健邓志辉宋美洁朱冰陈志成胡志强邓博伦武维祥
Owner JILIN UNIV
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