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An electric vehicle drum brake and its control method

A technology of drum brakes and electric vehicles, which is applied in the direction of drum brakes, brake types, brake actuators, etc., can solve the problems of reducing the power of electric vehicles and difficult structural layout, and achieve the effect of preventing external magnetic interference

Inactive Publication Date: 2019-02-12
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in electric vehicles, using the traditional method to use the motor to drive the air compressor to generate the brake gas required for braking is not only difficult in terms of structural layout, but also greatly reduces the power of the electric vehicle.

Method used

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  • An electric vehicle drum brake and its control method
  • An electric vehicle drum brake and its control method
  • An electric vehicle drum brake and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention is described in further detail below in conjunction with accompanying drawing:

[0038] Such as Figure 1 to Figure 7As shown, an electric vehicle drum brake includes a brake shoe friction lining 002, a brake shoe installation piece 003, a brake shoe 004, a return spring 005, an electromagnetic driver 006, a cam 007 and a The brake base plate 001 of the assembly, the cam mounting hole 1-1 for installing the cam 007 is provided on the brake base plate 001; one end of the cam 007 is an S-shaped boss, the other end is an intermediate shaft 7-2, and the end of the intermediate shaft 7-2 It is an outer hexagonal stud, and the brake base plate 001 is provided with a brake shoe installation platform 1-4 symmetrically arranged with the cam installation hole 1-1, and two brake shoe installation platforms 1-4 are symmetrically provided for installing the brake The brake shoe installation holes 1-5 of the shoe 004, one end of the brake shoe 004 is fixed on t...

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Abstract

The invention discloses a drum brake of an electric vehicle and a control method thereof. A brake shoe assembly and a cam are mounted on a brake bottom plate; then an electromagnetism actuator is connected with the cam through a connecting rod, wherein the electromagnetism actuator comprises a base, one end of the base is provided with a base mounting hole used for being fixedly mounted on a vehicle body, and the other end of the base is provided with an electromagnet left sucking disc; the base is connected with one end of an electromagnet right sucking disc through a connecting device; by adjusting the size of the current in electromagnetic coils of the left and right electromagnet sucking discs, under the effect of the connecting rod, the spring axial force is turned into the rotation couple moment of the cam; brake shoe pieces are driven by rotation of the cam to open, so that the purpose of braking is achieved; return springs are mounted between two brake shoes, so that the brake shoes are in a closed state when the brake does not work; and the electromagnetic induction principle is utilized to replace a pneumatic brake device, so that the braking performance of the electric vehicle is greatly improved, and the limitation of application of the electric vehicle is relieved.

Description

technical field [0001] The invention relates to a driving brake device for an electric vehicle, in particular to a drum brake for an electric vehicle and a control method thereof, belonging to the technical field of electric vehicle safety. Background technique [0002] With the deepening of the global energy crisis, the depletion of oil resources and the increasing harm of air pollution and global temperature rise, governments and auto companies generally recognize that energy saving and emission reduction are the main directions of future automotive technology development. As a new generation of transportation, electric vehicles have incomparable advantages over traditional vehicles in terms of energy saving, emission reduction and reducing human dependence on traditional fossil energy. [0003] Under the extensive and in-depth research on new energy vehicles in the world, the commercialization and scale of the electric vehicle industry have gradually formed. In recent ye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/16F16D121/20F16D51/20
CPCF16D51/20F16D65/16F16D2121/20
Inventor 余强赵轩张硕张思远魏琼张建强焦纪超雷吴斌
Owner CHANGAN UNIV
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