US 12,257,987 B2
Electronic parking brake system
Min Ho Kim, Seongnam-si (KR)
Assigned to HL MANDO CORPORATION, Pyeongtaek-si (KR)
Filed by HL MANDO Corporation, Pyeongtaek-si (KR)
Filed on Aug. 8, 2022, as Appl. No. 17/882,760.
Claims priority of application No. 10-2021-0130502 (KR), filed on Oct. 1, 2021.
Prior Publication US 2023/0106917 A1, Apr. 6, 2023
Int. Cl. B60T 13/74 (2006.01); H02P 3/18 (2006.01)
CPC B60T 13/74 (2013.01) [H02P 3/18 (2013.01); B60T 2240/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic parking brake system, comprising:
a first ECU (electronic control unit) connected to a plurality of motors and a second ECU connected to the plurality of motors for providing a driving force to a wheel to control the plurality of motors,
wherein the second ECU comprises:
a power reserve system operable to store a power supplied from a battery and supply, instead of the battery, the stored power to the second ECU;
a switch connected to the first ECU, the second ECU, and the plurality of motors and operable to switch the plurality of motors to be connected with the first ECU via the switch or the plurality of motors to be connected with the second ECU via the switch, based on an operating state of the first ECU; and
a second MCU for identifying the operating state of the first ECU, controlling the switch to connect the plurality of motors from the first ECU to the second ECU based on the operating state being an inactive state, and controlling the plurality of motors through the power stored in the power reserve system.