Vehicle having a brake device

Patent metadata

Field	Value
Publication number	US-10836265-B2
Application number	US-201616067743-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Dec 30, 2015
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A vehicle has a brake device with a friction brake unit, an electrical brake unit and a brake control device. In order to provide a vehicle having a reliable and structurally simple brake device, the friction brake unit has brake components made of a composite material and the brake control device includes a monitoring device for monitoring a brake operation performed by the electrical brake unit.

First claim

The invention claimed is:

1. A vehicle, comprising:
a braking device having a friction brake unit, an electrical brake unit and a brake control device;
said friction brake unit including brake components made of a composite material; and
said brake control device having a monitoring device configured for monitoring a braking operation performed by said electrical brake unit;
said brake control device being configured, in a normal mode of operation, to effect braking primarily by way of the electrical brake unit;
said brake control device being configured, in a case in which said monitoring device detects a limitation of said electrical brake unit, to trigger a safety mode and to effect braking primarily by way of said friction brake unit; and
wherein said brake components of said friction brake unit are configured not to exceed an oxidation limit temperature of said composite material in the normal mode of operation and to enable operation in the safety mode within a temperature range above the oxidation limit temperature.

2. The vehicle according to claim 1 , which comprises a drive device, and wherein said electrical brake unit includes at least one drive unit of said drive device.

3. The vehicle according to claim 2 , wherein at least one of said brake components of said friction brake unit and a drive unit of said drive device are associated with a respective one of a plurality of vehicle wheels, and wherein said drive unit is a component of said electrical brake unit.

4. The vehicle according to claim 1 , wherein said brake control device has at least two brake control units for controlling said electrical brake unit, and wherein said at least two brake control units are redundant to each other or diversely redundant in design.

5. The vehicle according to claim 1 , wherein said brake control device has at least two brake control units for controlling said electrical brake unit and said monitoring device comprises at least two monitoring units, which are different from each other and are each associated with a different brake control unit.

6. The vehicle according to claim 1 , wherein said brake control device is configured to control said friction brake unit for a braking effect compensation in a case in which said monitoring device detects that a braking effect of said electrical brake unit is insufficient with respect to a desired braking effect.

7. The vehicle according to claim 1 , wherein said composite material is a fiber composite material.

8. The vehicle according to claim 7 , wherein said composite material is a carbon fiber composite material.

9. The vehicle according to claim 1 , wherein said composite material is a ceramic composite material.

10. The vehicle according to claim 1 , wherein said composite material has an oxidation limit temperature in a range from 300 to 500 C.

11. The vehicle according to claim 1 , wherein said composite material is configured for damage-free operation up to temperatures in a range from 800 to 1,400° C.

12. The vehicle according to claim 1 configured as a motor vehicle.

13. The vehicle according to claim 1 configured as a rail vehicle.

14. The vehicle according to claim 13 , being a multiple unit for high-speed traffic with a maximum operating speed of at least 350 km/h.

15. A method of operating a braking device of a vehicle, the braking device having a friction brake unit with brake components made of a composite material, an electrical brake unit and a brake control device, the method comprising:
in a normal braking mode, primarily braking the vehicle with the electrical brake unit;
monitoring a braking operation performed by the electrical brake unit with a monitoring device;
if the monitoring unit detects a limitation of the electrical brake unit, activating a safety braking mode for primarily braking the vehicle with the friction brake unit;
in the normal braking mode, selectively assisting a braking operation of the electrical brake unit with the friction brake unit and thereby operating the friction brake unit at temperatures below an oxidation limit temperature of the composite material of the brake components; and
in the safety braking mode, primarily braking the vehicle with the friction brake unit and, on occasion, operating the friction brake unit at operating temperatures above the oxidation limit temperature of the composite material.

16. The method according to claim 15 , wherein the normal mode encompasses a service braking operation and the safety mode encompasses an emergency braking operation.

Assignees

• Siemens Mobility GmbH

Inventors

• Glinka Martin

Classifications

• B60T1/10

  by utilising wheel movement for accumulating energy, e.g. driving air compressors · CPC title

• F16D2200/0039

  Ceramics · CPC title

• F16D69/02

  Composition of linings {; Methods of manufacturing} · CPC title

• H02P3/26

  by combined electrical and mechanical braking · CPC title

• B60L15/20

  for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed · CPC title