Granted Patent B2

US 12,583,426 · App. 18/064,753 · Granted Mar 24, 2026

Inventors: Hauke Christian Schlimme (Braunschweig, DE); Arne Bartels (Wolfsburg, DE); Frank Bärecke (Wolfsburg, DE); Christian Alstadt (Braunschweig, DE)

Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT

B60T13/385B60T8/885B60T13/68B60T15/041B60T17/221

Abstract

Claims (45)

1 . A brake system for a transportation vehicle, the brake system comprising:

a wheel brake device for braking a wheel of the transportation vehicle;

an actuator device for targetedly actuating the wheel brake device;

a control device for controlling the actuator device; and

an emergency brake device for braking the wheel in response to a malfunction of the transportation vehicle, wherein the transportation vehicle malfunction is a malfunction of an on-board electrical system that renders the on-board electrical system unable to provide an amount of electrical current required to actuate the actuator device of the brake system,

wherein the emergency brake device has an energy store for storing electrical energy for actuating the wheel brake device, a triggering device for releasing the stored electrical energy in the energy store to actuate the wheel brake device, and a configuration device for targetedly configuring the actuation using the emergency brake device of the wheel brake device,

wherein the triggering device releases the energy store in response to the failure of the on-board electrical system of the transportation vehicle, and

wherein the configuration device is configured to set the maximum electrical energy delivered by the energy store and/or to set a delivery rate of the electrical energy delivered by the energy store.

2 . The brake system of claim 1 , wherein the configuration device performs the configuration of the actuation based on:

route data; and/or

weather data; and/or

traffic data; and/or

the vehicle speed; and/or

a driver profile of a driver of the transportation vehicle; and/or

a total weight of the transportation vehicle; and/or

a tire state of the transportation vehicle.

3 . The brake system of claim 1 , wherein the configuration device has a self-locking spindle mechanism for configuring the energy store.

4 . The brake system of claim 1 , wherein the energy store directly actuates the wheel brake device and/or actuates the actuator device to actuate the wheel brake device and/or to actuate an emergency actuator device of the emergency brake device to actuate the wheel brake device.

5 . The brake system of claim 1 , wherein the triggering device has an electromagnet for holding the triggering device in a basic position.

6 . The brake system of claim 1 , wherein the triggering device includes a voltage monitoring device for monitoring the on-board electrical system, an electric actuating motor for releasing the energy store to actuate the wheel brake device, and an electrical storage battery for storing an emergency operating current for operating the actuating motor, wherein the triggering device operates the actuating motor with the emergency operating current in response to a failure of the on-board electrical system.

7 . The brake system of claim 1 , wherein the emergency brake device has a restoring device for restoring the triggering device into a basic position.

8 . A transportation vehicle comprising a drive system for the drive of the transportation vehicle and comprising a brake system for the braking of the transportation vehicle, wherein the brake system is the brake system of claim 1 .

9 . A method for operating a brake system that includes a wheel brake device for braking a wheel of the transportation vehicle, an actuator device for targetedly actuating the wheel brake device, a control device for controlling the actuator device, and an emergency brake device for braking the wheel in response to a malfunction of the transportation vehicle wherein an on-board electrical system is rendered unable to provide an amount of electrical current required to actuate the actuator device of the brake system, the method comprising:

holding a triggering device in a basic position in response to an on-board electrical system providing electrical current required to actuate the actuator device;

using a determining device of the transportation vehicle to determine vehicle parameters and environmental parameters that have an influence on a braking input for reliably braking the transportation vehicle;

using a configuration device to configure the actuation, providable using the emergency brake device, of the wheel brake device;

using the triggering device to release the stored electrical energy in an energy store in response to the vehicle malfunction, wherein the on-board electrical system is no longer able to provide the electrical current required to actuate the actuator device; and

using the electrical energy released from the energy store to actuate the wheel brake device,

wherein the configuration device is configured to set the maximum electrical energy delivered by the energy store and/or to set a delivery rate of the electrical energy delivered by the energy store.

10 . The method of claim 9 , wherein the targeted actuation uses the emergency brake device of the wheel brake device.

11 . The method of claim 9 , wherein the configuration device performs the configuration of the actuation based on:

route data; and/or

weather data; and/or

traffic data; and/or

the vehicle speed; and/or

a driver profile of a driver of the transportation vehicle; and/or

a total weight of the transportation vehicle; and/or

a tire state of the transportation vehicle.

12 . The method of claim 11 , wherein the configuration device has a self-locking spindle mechanism for configuring the energy store.

13 . The method of claim 9 , wherein the energy store directly actuates the wheel brake device and/or actuates the actuator device to actuate the brake device and/or to actuate an emergency actuator device of the emergency brake device to actuate the wheel brake device.

14 . The method of claim 9 , wherein the triggering device has an electromagnet for holding the triggering device in a basic position.

15 . The method of claim 9 , wherein the triggering device includes a voltage monitoring device for monitoring the on-board electrical system, an electric actuating motor for releasing the energy store to actuate the wheel brake device, and an electrical storage battery for storing an emergency operating current for operating the actuating motor, wherein the triggering device operates the actuating motor with the emergency operating current in response to a failure of the on-board electrical system.

16 . The method of claim 9 , wherein the emergency brake device has a restoring device for restoring the triggering device into a basic position.

17 . The braking system of claim 1 , wherein the configuration device is further configured to increase and decrease the electrical energy stored in the energy store.

18 . The method of claim 9 , wherein the configuration device is further configured to increase and decrease the electrical energy stored in the energy store.

Assignments (4)

Priority Claims (1)

Continuity (1)

References Cited (23)