Integrated electronic brake apparatus and control method thereof

Patent metadata

Field	Value
Publication number	US-12466379-B2
Application number	US-202217689556-A
Country	US
Kind code	B2
Filing date	Mar 8, 2022
Priority date	Mar 12, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An integrated electronic brake apparatus may include: a main control unit configured to receive one or more of an EPB signal, a value from a pedal sensor, a value from a cylinder pressure sensor, or a value from a wheel speed sensor, perform EPB control, drive a main brake valve and a brake motor for main braking of the vehicle according to an operation of a pedal, and drive an additional brake valve for additional braking; an auxiliary control unit configured to receive one or more of the EPB signal, the value from the pedal sensor, or the value from the wheel speed sensor when a driving signal is inputted thereto, perform EPB control, and control the operation of the EPB to perform a pseudo ABS operation; and a connection bus configured to connect the first and second areas mounted in one box, and transfer a signal transmitted/received between the main control unit and the auxiliary control unit.

First claim

What is claimed is:

1 . An integrated electronic brake apparatus comprising:
a main control unit mounted in a first area, and configured to receive one or more of an EPB (Electronic Parking Brake) signal, a value from a pedal sensor, a value from a cylinder pressure sensor, or a value from a wheel speed sensor, to perform EPB control, to drive a main brake valve and a brake motor for main braking of a vehicle according to an operation of a pedal, and to drive an additional brake valve for additional braking; an auxiliary control unit mounted in a second area, and configured to receive one or more of the EPB signal, the value from the pedal sensor, or the value from the wheel speed sensor when a driving signal is inputted thereto, to perform EPB control, and to control an operation of an EPB to perform a pseudo ABS (Anti-lock Brake System) operation in connection with a peripheral control apparatus; and a connection bus configured to connect the first and second areas mounted in one box to each other, and to transfer a signal transmitted/received between the main control unit and the auxiliary control unit, wherein the main control unit comprises:
a first EPB driving unit configured to operate a parking brake;
a main brake valve driving unit configured to drive the main brake valve for the main braking of the vehicle;
an additional brake valve driving unit configured to drive the additional brake valve for the additional braking;
a motor driving unit configured to drive the brake motor; and
a first micro control unit (MCU) configured to control the main brake valve driving unit, the additional brake valve driving unit, the motor driving unit and the first EPB driving unit,
wherein the auxiliary control unit comprises:
a second EPB driving unit configured to operate a parking brake;
a second MCU configured to perform EPB control and control the second EPB driving unit to perform a pseudo ABS operation in connection with the peripheral control apparatus,
wherein the second MCU has a lower performance specification than the first MCU of the main control unit such that the first MCU performs the main braking and the additional braking while the second MCU performing the EPB control and not performing the main braking and the additional braking.

2 . The integrated electronic brake apparatus of claim 1 , wherein the driving signal comprises one or more of a watch dog signal or a user selection signal.

3 . The integrated electronic brake apparatus of claim 1 , further comprising:
a first connector mounted in the first area, and configured to connect the main control unit to the peripheral control apparatus; and a second connector mounted in the second area and configured to connect the auxiliary control unit to the peripheral control apparatus.

4 . The integrated electronic brake apparatus of claim 1 , wherein the main control unit and the auxiliary control unit are further configured to determine a validity of a pedal signal inputted from the main control unit and a validity of a pedal signal inputted from the auxiliary control unit, respectively.

5 . The integrated electronic brake apparatus of claim 1 , wherein the main control unit further comprises:
a first pedal signal input unit configured to receive a pedal stroke value from the pedal sensor; a cylinder pressure input unit configured to receive a cylinder pressure value from the cylinder pressure sensor; a first wheel speed input unit configured to receive a wheel speed value from the wheel speed sensor and to decode the received wheel speed value; a first EPB signal input unit configured to receive an EPB signal; and a watch dog signal generation unit configured to generate a watch dog signal, the first MCU controls the main brake valve driving unit, the additional brake valve driving unit, the motor driving unit and the first EPB driving unit according to signals inputted from one or more of the first pedal signal input unit, the cylinder pressure input unit, the first wheel speed input unit, or the first EPB signal input unit.

6 . The integrated electronic brake apparatus of claim 5 , wherein the additional brake valve comprises an inlet valve and outlet valve for controlling fluid pressure supplied to a wheel cylinder, for an ABS and ESC (Electronic Stability Control) function.

7 . The integrated electronic brake apparatus of claim 5 , wherein the main control unit further comprises a first communication unit configured to communicate with the peripheral control apparatus through communication with the vehicle.

8 . The integrated electronic brake apparatus of claim 5 , wherein the main control unit further comprises a first brake light switch configured to operate a brake light.

9 . The integrated electronic brake apparatus of claim 1 , wherein the auxiliary control unit further comprises:
a second pedal signal input unit configured to receive a pedal stroke value from the pedal sensor; a second wheel speed input unit configured to receive a wheel speed value from the wheel speed sensor and to decode the received wheel speed value; a watch dog signal detection unit configured to detect a watch dog signal; a second EPB signal input unit configured to receive an EPB signal; a second communication unit configured to communicate with the peripheral control apparatus within the vehicle, the second MCU performs the EPB control and control the second EPB driving unit to perform a pseudo ABS operation in connection with the peripheral control apparatus according to signals inputted from one or more of the second pedal signal input unit, the second wheel speed input unit, or the second EPB signal input unit, when the driving signal is inputted thereto.

10 . The integrated electronic brake apparatus of claim 9 , wherein the auxiliary control unit further comprises a second brake light switch configured to operate a brake light.

11 . The integrated electronic brake apparatus of claim 1 , wherein the main and auxiliary control units are disposed as a plurality of layers on independent PCBs that at least partially overlap each other in the one box.

12 . A control method of an integrated electronic brake apparatus including a main control unit mounted in a first area, an auxiliary control unit mounted in a second area, and a connection bus configured to connect the first and second areas mounted in one box to each other and to transfer a signal transmitted/received between the main control unit and the auxiliary control unit, comprising:
monitoring, by a micro control unit (MCU), whether a driving signal for driving the auxiliary control unit is inputted; receiving, by the MCU, one or more of a pedal stroke value from a pedal signal input unit of the auxiliary control unit, a wheel speed value from a wheel speed input unit of the auxiliary control unit, or an EPB (Electronic Parking Brake) signal from an EPB signal input unit of the auxiliary control unit, when the driving signal is determined to be inputted; receiving, by the MCU, a status of a vehicle in connection with a peripheral control apparatus within the vehicle through a communication unit of the auxiliary control unit; and performing, by the MCU, EPB control according to the EPB signal, and controlling an EPB driving unit of the auxiliary control unit to perform a pseudo ABS (Anti-lock Brake System) operation in connection with the peripheral control apparatus based on the pedal stroke value and the wheel speed value, wherein the main control unit comprises:
a first EPB driving unit configured to operate a parking brake;
a main brake valve driving unit configured to drive a main brake valve for main braking of the

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Lee Ju Ho
• Park Jae Hyun
• Jeon In Soo
• Choi Byeong Jin
• Kim Bo Min

Classifications

• B60T2270/413

  Plausibility monitoring, cross check, redundancy · CPC title

• B60T13/686

  in hydraulic systems or parts thereof · CPC title

• B60Y2400/81

  Braking systems · CPC title

• F16D65/16

  arranged in or on the brake · CPC title

• F16D2121/24

  using motors · CPC title