Electronic parking brake system and control method thereof

Patent metadata

Field	Value
Publication number	US-12187250-B2
Application number	US-202217575779-A
Country	US
Kind code	B2
Filing date	Jan 14, 2022
Priority date	Jan 18, 2021
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

Disclosed is an electronic parking brake system including an electronic front-wheel parking brake provided on a front wheel side of a vehicle and configured to be operated by a front wheel motor, an electronic rear-wheel parking brake provided on a rear wheel side of the vehicle and configured to be operated by a rear wheel motor, a motor driving device configured to drive at least one of the front wheel motor and the rear wheel motor, and a controller electrically connected to the motor driving device, wherein the controller receives operation mode selection information in which an operation mode for operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake is selected, and controls the motor driving device to operate at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake in response to the operation mode of the received operation mode selection information.

First claim

What is claimed is:

1. An electronic parking brake system comprising:
an electronic front-wheel parking brake provided on a front wheel side of a vehicle and configured to be operated by a front wheel motor;
an electronic rear-wheel parking brake provided on a rear wheel side of the vehicle and configured to be operated by a rear wheel motor;
a motor drive configured to drive at least one of the front wheel motor and the rear wheel motor; and
a controller electrically connected to the motor drive,
wherein:
the controller receives operation mode selection information in which an operation mode for operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake is selected, and controls the motor drive to operate at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake in response to the operation mode of the received operation mode selection information,
the operation mode of the operation mode selection information is at least one of a first operation mode for operating the electronic front-wheel parking brake and the electronic rear-wheel parking brake, a second operation mode for operating the electronic front-wheel parking brake, or a third operation mode for operating the electronic rear-wheel parking brake, and
the controller is configured to, when the operation mode of the operation mode selection information is the second operation mode, control a first motor drive and a second motor drive for driving the front wheel motor.

2. The electronic parking brake system according to claim 1 , further comprising
an operation mode selector configured to allow an operation mode of the operation mode selection information to be selected by a driver.

3. The electronic parking brake system according to claim 2 , wherein
the operation mode selector comprises an all wheels parking (AWP) switch provided to select the first operation mode for operating the electronic front-wheel parking brake and the electronic rear-wheel parking brake together, a front wheel parking (FWP) switch provided to select the second operation mode for operating only the electronic front-wheel parking brake, and a rear wheel parking (RWP) switch provided to select the third operation mode for operating only the electronic rear-wheel parking brake.

4. The electronic parking brake system according to claim 1 , wherein
the controller receives the operation mode selection information when braking the vehicle while driving or stopping the vehicle.

5. The electronic parking brake system according to claim 1 , wherein
the controller is configured to, when the operation mode of the operation mode selection information is the first operation mode, control the first motor drive and the second motor drive for driving the front wheel motor and control a third motor drive and a fourth motor drive for driving the rear wheel motor.

6. The electronic parking brake system according to claim 1 , wherein
the controller is configured to, when the operation mode of the operation mode selection information is the first operation mode,
receive wiring harness wiring connection information for the first operation mode,
control the first motor drive and the second motor drive for driving the front wheel motor based on first wiring harness wiring connection information for driving the front wheel motor in the received wiring harness wiring connection information, and
control a third motor drive and a fourth motor drive for driving the rear wheel motor based on second wiring harness wiring connection information for driving the rear wheel motor in the received wiring harness wiring connection information.

7. The electronic parking brake system according to claim 1 , wherein
the controller is configured to, when the operation mode of the operation mode selection information is the second operation mode,
receive wiring harness wiring connection information for the second operation mode, and
control the first motor drive and a second motor drive for driving the front wheel motor based on first wiring harness wiring connection information for driving the front wheel motor in the received wiring harness wiring connection information.

8. The electronic parking brake system according to claim 1 , wherein
the controller is configured to, when the operation mode of the operation mode selection information is the third operation mode,
receive wiring harness wiring connection information for the third operation mode, and
control a third motor drive and a fourth motor drive for driving the rear wheel motor based on second wiring harness wiring connection information for driving the rear wheel motor in the received wiring harness wiring connection information.

9. The electronic parking brake system according to claim 1 , wherein
the controller is configured to control the motor drive based on at least one of parking switch operation information, brake pedal operation information, and braking information.

10. A control method of an electronic parking brake system comprising an electronic front-wheel parking brake provided on a front wheel side of a vehicle and configured to be operated by a front wheel motor, and an electronic rear-wheel parking brake provided on a rear wheel side of the vehicle and configured to be operated by a rear wheel motor,
wherein the control method comprises:
receiving operation mode selection information in which an operation mode for operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake is selected, wherein the operation mode of the operation mode selection information is at least one of a first operation mode for operating the electronic front-wheel parking brake and the electronic rear-wheel parking brake, a second operation mode for operating the electronic front-wheel parking brake, or a third operation mode for operating the electronic rear-wheel parking brake, and;
driving at least one of a front wheel motor of the electronic front-wheel parking brake and a rear wheel motor of the electronic rear-wheel parking brake in response to the operation mode of the received operation mode selection information; and
operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake by driving at least one of the front wheel motor and the rear wheel motor,
wherein the driving of at least one of the front wheel motor and the rear wheel motor comprises, when the operation mode is the second operation mode, controlling a first motor drive and a second motor drive for driving the front wheel motor.

11. The control method according to claim 10 , wherein
the driving of at least one of the front wheel motor and the rear wheel motor comprises:
when the operation mode is the first operation mode, controlling the first motor drive and the second motor drive for driving the front wheel motor and controlling a third motor drive and a fourth motor drive for driving the rear wheel motor.

12. The control method according to claim 10 , wherein
the driving of at least one of the front wheel motor and the rear wheel motor comprises:
when the operation mode is the third operation mode, controlling a third motor drive and a fourth motor drive for driving the rear wheel motor.

13. The control method according to claim 10 , wherein
the driving of at least one of the front wheel motor and the rear wheel motor comprises:
determining whether the operation mode of the received operation mode selection information is the first operation mode;
receiving wiring harness wiring connection information for

Assignees

• Hl Mando Corp

Inventors

• Lee Chan Won
• Oh Taewoong

Classifications

• B60Y2400/81

  Braking systems · CPC title

• B60R16/0207

  Wire harnesses · CPC title

• B60K1/02

  comprising more than one electric motor · CPC title

• B60K7/0007

  the motor being electric · CPC title

• B60T7/042

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