System for storing a pressurized gas and method for emptying a storage container for a pressurized gas

Patent metadata

Field	Value
Publication number	US-10359150-B2
Application number	US-201615277295-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Mar 27, 2014
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

A system for storing a pressurized gas in a motor vehicle is provided, having a storage container and at least one thermally activatable safety valve for emptying the storage container. The safety valve activates automatically at a corresponding high temperature. The storage container has an additional activatable emptying device, which has an interface for an external energy source. The interface can be connected to the external energy source in order to empty the storage container in a targeted manner. Also provided is a method for emptying a storage container for a pressurized gas in a motor vehicle.

First claim

What is claimed is:

1. A system for storing a pressurized gas in a motor vehicle, comprising: a storage vessel storing the pressurized gas; at least one thermally activatable safety valve for the evacuation of the storage vessel, the safety valve self-activating in the presence of a correspondingly high temperature; and a triggering device that is activatable to evacuate the storage vessel via the safety valve, the triggering device having an interface, which activates to evacuate the storage vessel when electrically connected to an energy source that, prior to a demand situation calling for the storage vessel to be targetedly evacuated, is physically and electrically separate from the motor vehicle, but that, in the demand situation, may be brought into electrical contact with the interface so as to activate the triggering device to targetedly evacuate the storage vessel.

2. The system according to claim 1 , wherein:
the triggering device is provided on the safety valve, and includes the interface, and
the energy source is connectable to the interface of the triggering device for the purposes of targetedly triggering the safety valve.

3. The system according to claim 1 , wherein the interface has terminals connectable to the energy source and arranged in a region of the motor vehicle that is accessible from the outside.

4. The system according to claim 3 , wherein the terminals are electrical terminals.

5. The system according to claim 1 , wherein the energy source can, after connecting to the triggering device, be activated in order to evacuate the storage vessel.

6. The system according to claim 5 , wherein the activation is performed by remote control or via an electrical ignition line.

7. The system according to claim 5 , wherein the remote control activation is via radio.

8. The system according to claim 2 , wherein the triggering device has a thermal actuator.

9. The system according to claim 8 , wherein the thermal actuator is an electric heater.

10. The system according to claim 8 , wherein the triggering device has a heating coil with which the safety valve is at least partially enwrapped.

11. The system according to claim 1 , wherein the triggering device comprises a mechanical or pyrotechnic actuator.

12. The system according to claim 1 , wherein the interface has terminals that are connectable to the energy source and are arranged in an interior compartment of the motor vehicle.

13. The system according to claim 1 , wherein the triggering device has a breaker switch, which is open during normal driving operation, and which is closed by a crash signal from a vehicle safety system.

14. A method for the evacuation of a storage vessel for a pressurized gas in a motor vehicle, the method comprising the acts of: maintaining, prior to a demand situation, an energy source physically and electrically separate from a triggering device provided on a safety valve of the storage vessel, wherein the demand situation calls for the storage vessel to be targetedly evacuated; connecting, in the demand situation, the energy source to the triggering device, and activating the energy source such that the storage vessel is targetedly evacuated by way of the triggering device via the safety valve.

15. A triggering device for use with a self-actuated safety valve configured to evacuate a pressurized gas storage vessel of a motor vehicle, the triggering device comprising: an interface, which activates to evacuate the pressurized gas storage vessel when electrically connected to an energy source that, prior to an on-demand situation calling for the pressurized gas storage vessel to be targetedly evacuated, is physically and electrically separate from the motor vehicle, but that, in the on-demand situation, may be brought into electrical contact with the interface so as to activate the triggering device to targetedly evacuate the pressurized gas storage vessel via the self-actuated safety valve.

16. The triggering device according to claim 15 , wherein the triggering device is configured to activate only after an on-demand coupling with the energy source.

17. The triggering device according to claim 15 , further comprising a breaker switch configured to close from a normal open configuration in response to a crash signal of a vehicle safety system.

18. The triggering device according to claim 16 , wherein the interface has terminals configured to couple with the energy source so as to activate the triggering device.

19. The triggering device according to claim 18 , wherein the terminals are accessible from an interior of the motor vehicle.

20. The triggering device according to claim 15 , wherein the triggering device includes a heating coil partially enwrapping the self-actuated safety valve.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Pelger Andreas
• Kunze Klaas
• Landeck Bastian
• Kunberger Jan-Mark
• Schott Stefan

Classifications

• F17C2270/0178

  Cars · CPC title

• Y10T137/1987

  With additional diverse control · CPC title

• Y02E60/321

  Cross-Sectional Technologies · mapped topic

• F17C2250/0439

  Temperature · CPC title

• F17C2260/037

  Handling leaked fluid · CPC title