Electric brake system for electric vehicle

Patent metadata

Field	Value
Publication number	US-11433867-B2
Application number	US-201916718564-A
Country	US
Kind code	B2
Filing date	Dec 18, 2019
Priority date	Dec 20, 2018
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

The present disclosure relates to an electric brake system for an electric vehicle, which is more economical by simplifying a configuration of an electric vehicle that includes a main service brake and an electromagnetic brake, the electric brake system including an inductor, in a spherical shape, formed so that a drive axle penetrates through a center portion of the inductor; a plurality of springs inserted into holes defined in the inductor; an armature, in a disk shape, provided to contact the spring; and a friction disk mounted on a side of a motor, where a braking force is generated by operating the friction disk toward the armature.

First claim

What is claimed is:

1. An electric brake system for an electric vehicle, comprising:
an inductor, formed so that a drive axle penetrates through a center portion of the inductor;
a plurality of springs inserted into holes defined in the inductor;
an armature, in a disk shape, provided to contact the spring and operated by the inductor to generate a first braking force;
a friction disk mounted on a side of a motor; and
a brake member disposed between the motor and the friction disk,
wherein when the first braking force due to the operation of the armature is released, a second braking force is generated by operating the friction disk toward the armature and
wherein the brake member operates the friction disk to provide the second braking force.

2. The electric brake system for an electric vehicle of claim 1 , wherein the brake member operates the friction disk by a volume change.

3. The electric brake system for an electric vehicle of claim 1 , further comprising an actuator connected to the brake member to operate the brake member.

4. The electric brake system for an electric vehicle of claim 3 , wherein the actuator operates the brake member in a hydraulic or mechanical or electromagnetic manner.

5. The electric brake system for an electric vehicle of claim 4 , wherein the actuator is operated in conjunction with a change in an angle of a brake pedal.

6. The electric brake system for an electric vehicle of claim 5 , wherein a degree of braking to which the brake member engages the friction disk to the armature is proportionally controllable.

Assignees

• Doosan Corp
• Doosan Ind Vehicle Co Ltd

Inventors

• Yi Jun Il

Classifications

• B60T7/042

  by electrical means, e.g. using travel or force sensors · CPC title

• F16D2121/22

  for releasing a normally applied brake · CPC title

• B60T13/741 Primary

  acting on an ultimate actuator · CPC title

• F16D2500/50866

  Parking, i.e. control of drive units during parking · CPC title

• F16D2500/50841

  Hill hold · CPC title