Control unit for a recuperative brake system of a vehicle and method for braking a vehicle

摘要

A control device for a recuperative braking system of a vehicle includes: an actuating device configured to (i) select the maximum value of a front axle generator braking torque and of a rear axle generator braking torque, taking into account at least one provided default variable concerning a setpoint total braking torque which is predefined by a driver, (ii) control an electric motor, and (iii) control a hydraulic front axle brake circuit component and a hydraulic rear axle brake circuit component in such a way that a front axle brake pressure and a rear axle brake pressure are settable in such a way that a difference between a predefined setpoint braking torque distribution and an actual braking torque distribution present between the front axle and the rear axle is minimized.

主权项

1. A control device for a recuperative braking system of a vehicle, comprising:
an actuating device configured to:
control at least one electric motor of the vehicle, taking into account at least one provided default variable concerning a setpoint total braking torque which is predefined by a driver, in such a way that at least a front axle generator braking torque is applied to a front axle of the vehicle with the aid of the at least one electric motor;select the maximum permissible front axle generator braking torque which may be applied to the front axle with the aid of the at least one electric motor, and select the maximum permissible rear axle generator braking torque which may be applied to a rear axle of the vehicle with the aid of the at least one electric motor, taking into account at least the default variable, and control the at least one electric motor with the aid of at least one motor control signal to perform a regenerative braking; andcontrol at least one hydraulic front axle brake circuit component of a front axle brake circuit associated with the front axle, and control at least one hydraulic rear axle brake circuit component of a rear axle brake circuit associated with the rear axle, with the aid of at least one hydraulic control signal and in conjunction with the regenerative braking, in such a way that a front axle brake pressure in the front axle brake circuit and a rear axle brake pressure in the rear axle brake circuit are set in such a way that a difference between (i) a predefined setpoint braking torque distribution and (ii) an actual braking torque distribution present between the front axle and the rear axle is minimized, wherein the actuating device is configured to maintain the setpoint braking torque distribution during the regenerative braking; wherein the actuating device is configured to select the maximum permissible front axle generator braking torque and the maximum permissible rear axle generator braking torque such that a sum of the maximum permissible front axle generator braking torque and the maximum permissible rear axle generator braking torque is less than or equal to the setpoint total braking torque.