Hydraulic adjustment unit of brake system in vehicle, brake system, and control method

A brake system in a vehicle, comprising a first fluid reservoir, a second fluid reservoir, a first oil return pipe, a second oil return pipe, and a plurality of wheel cylinders, wherein

• the first oil return pipe is connected to the plurality of wheel cylinders, and the first oil return pipe is configured to deliver brake fluid in the plurality of wheel cylinders to the first fluid reservoir, to depressurize a plurality of wheels;
• and
• the second oil return pipe is connected to the plurality of wheel cylinders through oil inlet pipes (130, 140) of the brake system in the vehicle, and the second oil return pipe is configured to deliver the brake fluid in the wheel cylinders of a vehicle to the second fluid reservoir through the oil inlet pipes of the brake system, to depressurize the wheels of the vehicle.

A control method for a brake system in a vehicle, comprising:

• controlling, by a controller of a brake system, first control valves to be in a closed state, to connect a first oil return pipe of the brake system to a wheel cylinder of the brake system, wherein brake fluid in the wheel cylinder of the brake system flows into a first fluid reservoir of the brake system through the first oil return pipe, to depressurize wheels of a vehicle;
• and
• controlling, by the controller, second control valves (10, 11) to be in a closed state, to connect oil inlet pipes (130, 140) of the brake system to a second oil return pipe of the brake system, wherein the brake fluid in the wheel cylinder of the brake system flows into a second fluid reservoir of the brake system through the oil inlet pipes (130, 140) of the brake system and the second oil return pipe.