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Telex braking system for low-speed electric automobiles

A technology of electric vehicles and braking systems, applied in the direction of brakes, braking transmission devices, vehicle components, etc., can solve the problems of inability to realize auxiliary braking and automatic braking, and achieve avoidance of man-machine braking interference, high transmission efficiency, The effect of high test efficiency

Inactive Publication Date: 2019-07-30
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defect that the existing low-speed electric vehicle braking system cannot realize the combination of auxiliary braking and automatic braking. The present invention provides a fly-by-wire braking system combining the two

Method used

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  • Telex braking system for low-speed electric automobiles
  • Telex braking system for low-speed electric automobiles
  • Telex braking system for low-speed electric automobiles

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Embodiment Construction

[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, the present invention discloses a structural schematic diagram of a fly-by-wire braking system for low-speed electric vehicles, and the principle feasibility of the fly-by-wire braking system of the present invention is illustrated by calculating the degrees of freedom of the structure.

[0033] Pedal brake force output degree of freedom: F=3n-2p l -p n =3×3-2×3-2=1

[0034] Motor independent braking Braking degree of freedom: F=3n-2p l -p n =3×3-2×4=1

[0035] Degree of freedom for motor-assisted pedal braking: F=3n-2p l -pn =3×5-2×6-2=1

[0036] Such as figure 2 As shown, the present invention discloses a schematic diagram of an assembled structure of a fly-by-wire braking system for a low-s...

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Abstract

The invention discloses a telex braking system for low-speed electric automobiles. The telex braking system comprises an electric braking module, a hydraulic braking module and a control module. The electric braking module comprises a motor, a worm gear and worm reducing mechanism and an internal ball screw, the hydraulic braking module comprises a braking master cylinder, a fuel tank, a wheel cylinder and a braking pedal, and the control module comprises a vehicle speed sensor, a worm angle displacement sensor, a pedal force sensor and a control unit. The motor applies braking force to a master cylinder piston rod of the hydraulic braking module through the worm gear and worm reducing mechanism and the internal ball screw. According to the telex braking system for the low-speed electric automobiles, traditional hydraulic braking systems of low-speed electric automobiles are improved and upgraded, the active safety of the low-speed electric automobiles is enhanced, the braking distanceis shortened, and the burden of drivers is relieved; the telex braking system and the drivers can finish braking alone, and redundant protection of the braking system is realized; and various man-machine control modes are achieved, power assisting braking, active braking and damping control are realized, and the braking requirements of automatic driving are met.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a fly-by-wire braking system for low-speed electric vehicles. Background technique [0002] As the country vigorously advocates green environmental protection, energy saving and emission reduction, electric vehicles have become an inevitable development trend of the future automotive industry. However, since electric vehicles do not have a fuel engine, the power braking system does not have a vacuum source to rely on. The current method is to add negative pressure devices such as electric vacuum pumps, vacuum tanks, and pressure valves to electric vehicles to convert electricity into air pressure. Then, the air pressure is converted into mechanical force through a vigorous drum, and then acts on the piston of the brake master cylinder, but this method has disadvantages such as long brake response time, low reliability, and high noise. At the same time, multiple negative press...

Claims

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Application Information

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IPC IPC(8): B60T13/74
CPCB60T13/745
Inventor 汪选要程义胡守俍
Owner ANHUI UNIV OF SCI & TECH