US 12,409,823 B2
Redundant brake system having two pressure supply units for electric vehicles, and vehicles with autonomous driving of step 3 (HAD) to step 5 (AD)
Thomas Leiber, Rogoznica (HR)
Assigned to IPGATE AG, Pfaffikon (CH)
Appl. No. 17/415,196
Filed by IPGATE AG, Pfäffikon (CH)
PCT Filed Dec. 20, 2019, PCT No. PCT/EP2019/086864
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/128078, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10 2018 133 189.4 (DE), filed on Dec. 20, 2018; application No. 20 2019 107 191.5 (DE), filed on Jul. 10, 2019; and application No. 20 2019 107 193.1 (DE), filed on Aug. 30, 2019.
Prior Publication US 2022/0041150 A1, Feb. 10, 2022
Int. Cl. B60T 13/58 (2006.01); B60K 1/00 (2006.01); B60T 8/94 (2006.01); B60K 7/00 (2006.01); B60L 7/24 (2006.01)
CPC B60T 13/586 (2013.01) [B60T 8/94 (2013.01); B60K 1/00 (2013.01); B60K 7/0007 (2013.01); B60L 7/24 (2013.01); B60T 2201/16 (2013.01); B60T 2270/402 (2013.01); B60T 2270/403 (2013.01); B60T 2270/413 (2013.01); B60T 2270/604 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A braking system for a vehicle having at least two axles and hydraulically acting wheel brakes associated with wheels of the vehicle, including:
at least two hydraulic brake circuits, each having at least one of the hydraulically acting wheel brakes,
at least two pressure supply devices, driven by an electric-motor drive,
at least one valve assembly having valves for the wheel-specific adjustment of brake pressures and/or for disconnecting or separating the wheel brakes from a pressure supply device of the at least two pressure supply devices,
at least two electronic control and regulating units, one of which being a superordinate central control unit that controls individual control and regulating units of components of the braking system, wherein the superordinate central control unit also controls an electric power steering system, and
at least one additional electric drive motor provided for at least one of the axles or at least one wheel, wherein the at least one additional electric drive motor is used to drive and decelerate the at least one axle or the at least one wheel,
wherein during a steering intervention, the superordinate central control unit is configured to control the electric power steering system and, simultaneously, at least one of the pressure supply devices to control the pressure in at least one wheel brake or the at least one electric drive motor, and
wherein when braking, different braking torques are produced on the axles for braking force distribution and/or on the wheels of an axle for producing a yaw moment or steering intervention using the wheel brakes and/or the drive motors, and
wherein the braking system further comprises an electronic brake pedal connected to the superordinate central control unit and/or to the at least one pressure supply device via an electrical connection, only.