Vehicle Electrical System

• US 20110270489A1
• Filed: 06/10/2009
• Published: 11/03/2011
• Est. Priority Date: 07/29/2008
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Stahl, Manfred, Gustmann, Martin
• Application Number:
  US13/054,353
• Publication Number:
  US 20110270489A1
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 3/0007 Measures or means for preventing or attenuating collisions
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

A vehicle electrical system for a motor vehicle having a vehicle electrical system with electrical consumers connected to it. The vehicle electrical system also has electrical energy generation devices and at least one energy accumulator connected to it. The energy accumulator is being able to be separated from the vehicle electrical system via a switching device. At least one switching device monitor is provided, which checks the operating state of the switching device.

Claims

1-10. -10. (canceled)

11. A vehicle electrical system for a motor vehicle comprising:

a first vehicle electrical system having at least one of;

i) at least one electrical consumer connected to it, and ii) at least one electrical energy generation device connected to it, the first vehicle electrical system further having at least one energy accumulator and at least one switching device monitor connected to it, the energy accumulator being able to be separated from the first vehicle electrical system via a switching device, and the at least one switching device monitor configured to check an operating state of the switching device.

12. The vehicle electrical system as recited in claim 11, wherein the vehicle electrical system has the at least one electrical consumer connected to it, at least one of the electrical consumers being an electrical drive motor capable of being operated as an electrical generator intermittently.

13. The vehicle electrical system as recited in claim 11, wherein the first vehicle electrical system has at least one electrical energy generation device connected to it, at least one of the electrical energy generation devices being an electrical generator which is capable of being driven by an internal combustion engine.

14. The vehicle electrical system as recited in claim 11, wherein the switching device is capable of assuming at least two switching states.

15. The vehicle electrical system as recited in claim 11, wherein the switching device is capable of assuming at least three switching states.

16. The vehicle electrical system as recited in claim 11, wherein at least one of the switching device monitors is a performance test device and has performance test loads.

17. The vehicle electrical system as recited in claim 11, wherein at least one of the switching device monitors is a supply test device and has supply test sources.

18. The vehicle electrical system as recited in claim 11, wherein at least one of the switching device monitors has at least one measuring device, the at least one measuring device being selected from the group consisting of current measuring devices, voltage measuring devices, voltage-differential measuring devices, voltage-characteristic measuring devices, and current-characteristic measuring devices.

19. The vehicle electrical system as recited in claim 11, further comprising:

at least one second vehicle electrical system, which has a different nominal voltage than the first vehicle electrical system.

20. A hybrid motor vehicle, comprising:

a first vehicle electrical system having at least one of;

i) at least one electrical consumer connected to it, and ii) at least one electrical energy generation device connected to it, the first vehicle electrical system further having at least one energy accumulator and at least one switching device monitor connected to it, the energy accumulator being able to be separated from the first vehicle electrical system via a switching device, and the at least one switching device monitor configured to check an operating state of the switching device.

21. A method for checking an operating state of an electrical switching device, which connects an electrical energy accumulator to a vehicle electrical system in a reversible manner, the method comprising at least one of:

determining the operating state by measuring a temporal characteristic of at least a voltage;

determining the operating state by measuring a temporal characteristic of at least a current intensity; and

determining the operating state by measuring the electrical current flowing through the switching device and measuring a voltage differential across the switching device.