According to an embodiment of the present invention provides an electro-hydraulic brake, which comprises: a main brake unit configured to provide braking hydraulic pressure to a plurality of wheel cylinders by driving a motor; an auxiliary brake unit connected to the main brake unit to be filled with high-pressure braking hydraulic pressure, and configured to provide braking hydraulic pressure to the plurality of wheel cylinders when an operation error of the main brake unit occurs; a main battery configured to supply power to the main brake unit and the auxiliary brake unit; and an auxiliary battery configured to supply power to the auxiliary brake unit when the main battery fails. The auxiliary brake unit comprises an auxiliary brake control unit which controls charging and discharging of the auxiliary battery, and a power module which monitors a state of the main battery and transmits the state to the auxiliary brake control unit, and a battery management module which monitors a state of charge (SOC) of the auxiliary battery and transmits the state of charge to the auxiliary brake control unit. The present invention allows an auxiliary braking system to operate normally using an auxiliary power supply device even in a situation in which a main power supply of a vehicle fails.
본 개시의 일 실시예에 의하면, 모터의 구동에 의해 복수의 휠실린더에 제동유압을 제공하도록 구성된 주제동부(main brake unit); 주제동부에 연결되어 고압의 제동유압이 충진되고, 주제동부의 작동 오류 발생시 복수의 휠실린더에 제동유압을 제공하도록 구성된 보조제동부(auxiliary brake unit); 주제동부 및 보조제동부에 전원(power)을 공급하도록 구성된 주배터리(main battery); 및 주배터리의 고장시 보조제동부에 전원을 공급하도록 구성된 보조배터리(auxiliary battery)를 포함하되, 보조제동부는 보조배터리의 충전과 방전을 제어하는 보조제동 제어부(auxiliary brake control unit), 주배터리의 상태를 모니터링(monitoring)하고 상태를 보조제동 제어부에 전달하는 파워모듈(power module) 및 보조배터리의 충전상태(SOC: State Of Charge)를 모니터링하고 충전상태를 보조제동 제어부에 전달하는 배터리 관리모듈(battery management module)을 포함하는 전자식 유압 브레이크를 제공한다.
Electro-hydraulic Brake And Control Method Therefor
전자식 유압 브레이크 및 이의 제어방법
2023-02-15
Patent
Electronic Resource
Korean
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Electro-hydraulic brake system and pressure supply unit therefor
European Patent Office | 2021
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