Electro-hydraulic brake and control method therefor

An electro-hydraulic brake system of a vehicle, comprising:

• a main brake unit configured to provide a braking hydraulic pressure to a plurality of wheel cylinders;
• an auxiliary brake unit connected to the main brake unit and configured to provide the braking hydraulic pressure to the plurality of wheel cylinders when a failure occurs to the main brake unit;
• 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 a failure occurs to the main battery, the auxiliary battery comprising:
• an auxiliary brake control unit configured to control charging and discharging of the auxiliary battery;
• a power module configured to monitor a state of the main battery and transmit the monitored state of the main battery to the auxiliary brake control unit;
• and
• a battery management module configured to monitor a state of charge (SOC) of the auxiliary battery and transmit the monitored SOC of the auxiliary battery to the auxiliary brake control unit,
• wherein the auxiliary brake control unit is configured to stop charging the auxiliary battery when the vehicle is braking.