Method for deactivating a high voltage system of a motor vehicle

Patent metadata

Field	Value
Publication number	US-9873331-B2
Application number	US-201314417400-A
Country	US
Kind code	B2
Filing date	Jun 19, 2013
Priority date	Jul 28, 2012
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A method for deactivating an electric high voltage system of a motor vehicle including requesting an interruption of the high voltage system in a first control system; requesting an interruption of the high voltage system in a second control system; and the automatic interruption of the high voltage system by at least one of the control systems.

First claim

The invention claimed is:

1. A method for deactivating an electrical high voltage system in a motor vehicle, the method comprising:
requesting interruption of the high voltage system on a first control system;
requesting interruption of the high voltage system on a second control system; and
automatically interrupting the high voltage system by at least one of the control systems, and
determining a non-live status of the high voltage system after the automatic interruption.

2. The method of claim 1 , further comprising determining the presence of high voltage on the high voltage system prior to interrupting the high voltage system.

3. The method of claim 1 , wherein the non-live status and/or a presence of high voltage is determined by at least two measuring devices.

4. The method of claim 1 , wherein the requesting interruption of the high voltage system of at least one of the first and second control systems is made manually.

5. The method of claim 1 , wherein the requesting interruption on the second control system must be made within a defined period after the requesting interruption on the first control system in order to permit the automatically interrupting of the high voltage system.

6. The method of claim 1 further comprising reactivating the high voltage system: the reactivating comprising:
requesting, as a first request, conclusion of the interruption of the high voltage system on at least one of the first and second control system;
requesting, as a second request, conclusion of the interruption of the high voltage system on at least one of the first and second control system; and
automatically concluding the interruption of the high voltage system by the control systems.

7. The method of claim 6 , wherein the first and/or second request requires input of a code that has been produced during the deactivation in order to permit the automatically concluding the interruption of the high voltage system.

8. The method of claim 7 wherein the second request must be made within a defined period after the first request in order to permit the automatically concluding the interruption of the high voltage system.

9. The method of claim 8 , wherein the code is output on a maintenance unit, configured to be temporarily connected to the control systems, when the high voltage system is deactivated and is input into the maintenance unit when the high voltage system is reactivated.

10. The method of claim 9 , wherein the maintenance unit checks a maintenance state, wherein the interruption of the high voltage system is concluded automatically only when a defined maintenance state is present.

11. A method for deactivating an electrical high voltage system in a motor vehicle, the method comprising:
requesting interruption of the high voltage system, as a first interruption request, on a first control system;
requesting interruption of the high voltage system, as a second interruption request, on a second control system; and
automatically interrupting the high voltage system by at least one of the control systems, in response to the second interruption request being made within a defined period after the first interruption request.

12. The method of claim 11 , further comprising determining the presence of high voltage on the high voltage system prior to interrupting the high voltage system.

13. The method of claim 12 , wherein the presence of high voltage is determined by at least two measuring devices.

14. The method of claim 11 , wherein at least one of the first and second interruptions requests is made manually.

15. The method of claim 11 , further comprising reactivating the high voltage system: the reactivating comprising:
requesting, as a first reactivation request, conclusion of interruption of the high voltage system on at least one of the first and second control system;
requesting, as a second reactivation request, conclusion of interruption of the high voltage system on at least one of the first and second control system; and
automatically concluding the interruption of the high voltage system by the control systems.

16. The method of claim 15 , wherein the first and/or second reactivation request requires input of a code produced during the deactivation in order to permit the automatically concluding of the interruption of the high voltage system.

17. A method for reactivating a high voltage system that has undergone deactivation by requesting interruption of the high voltage system on a first control system, requesting interruption of the high voltage system on a second control system, automatically interrupting the high voltage system by at least one of the control systems, and determining a non-live status of the high voltage system after the automatic interruption; the method for reactivating comprising:
requesting, as a first request, conclusion of interruption of the high voltage system on at least one of a first control system and a second control system;
requesting, as a second request, conclusion of the interruption of the high voltage system on at least one of the first and second control systems; and
automatically concluding the interruption of the high voltage system by the control systems.

18. The method of claim 17 , wherein the first and/or second request requires input of a code produced during the deactivation in order to permit the automatically concluding of the interruption of the high voltage system.

Assignees

• Volkswagen Ag
• Volkswagen Ag

Inventors

• Lachmund Uwe
• Hänsch Ronny
• Quentmeier Stefan

Classifications

• B60L3/04

  Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) · CPC title

• B60L2250/16

  by display · CPC title

• B60L58/10

  for monitoring or controlling batteries · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L3/0046 Primary

  relating to electric energy storage systems, e.g. batteries or capacitors · CPC title