US 12,227,162 B2
Motor driving circuit for electronic parking brake system
Hee Chul Jung, Suwon-si (KR); Kyung Ran Cho, Seoul (KR); Chul Eui Park, Yongin-si (KR); and Sang Woo Kim, Seongnam-si (KR)
Assigned to HL MANDO CORPORATION, Pyeontaek (KR)
Appl. No. 18/024,201
Filed by HL MANDO CORPORATION, Pyeongtaek-si (KR)
PCT Filed Dec. 17, 2021, PCT No. PCT/KR2021/019289
§ 371(c)(1), (2) Date Mar. 1, 2023,
PCT Pub. No. WO2022/131856, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10-2020-0176982 (KR), filed on Dec. 17, 2020; and application No. 10-2020-0176983 (KR), filed on Dec. 17, 2020.
Prior Publication US 2023/0264667 A1, Aug. 24, 2023
Int. Cl. H02K 7/14 (2006.01); B60T 8/17 (2006.01); B60T 8/88 (2006.01); B60T 8/92 (2006.01); B60T 13/74 (2006.01); B60T 17/22 (2006.01); H02P 5/00 (2016.01)
CPC B60T 8/92 (2013.01) [B60T 8/17 (2013.01); B60T 8/885 (2013.01); B60T 13/74 (2013.01); B60T 17/22 (2013.01); H02P 5/00 (2013.01); B60T 2270/402 (2013.01); B60T 2270/403 (2013.01); B60T 2270/414 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A motor driving circuit, comprising:
a first motor and a second motor for releasing or applying a parking brake applied to different wheels, respectively; and
a first ECU and a second ECU for controlling a driving of the first motor and the second motor, respectively,
wherein the second ECU is prevented from intervening in the driving of the first motor and the second motor while the first ECU drives the first motor and the second motor, and controls the driving of the first motor and the second motor only when there is an abnormality in the first ECU,
wherein the first ECU comprises:
a first MCU for confirming a release or application condition of the parking brake;
a first driving device for outputting a first switching control signal according to a first control of the first MCU;
a first current supply device which is switched according to the first switching control signal of the first driving device to change a direction of a current of the first current supply device and supply the current of the first current supply device to the first motor and the second motor respectively; and
a first selection device for selectively providing the current of the first current supply device to the first motor and the second motor.