Method and device for discharging a high-voltage system

Patent metadata

Field	Value
Publication number	US-9768606-B2
Application number	US-86651708-A
Country	US
Kind code	B2
Filing date	Dec 30, 2008
Priority date	Feb 25, 2008
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A method for discharging a high-voltage system in a vehicle, the high-voltage system having at least one energy store and a plurality of high-voltage consumers. To discharge the high-voltage system, the electrical energy store is first separated from the rest of the vehicle electrical system, and at least one of the high-voltage consumers is switched on, so that the charge stored within the system drains via the consumers.

First claim

What is claimed is:

1. A method for discharging a high-voltage onboard vehicle electrical system having at least one energy store and a plurality of high-voltage consumers, the method comprising:
electrically separating the energy store from the rest of the vehicle electrical system; and
switching on at least one of the high-voltage consumers in order to reduce a charge stored in the vehicle electrical system;
wherein the high-voltage consumers include a DC/DC converter.

2. The method according to claim 1 , wherein a plurality of high-voltage consumers are switched on simultaneously.

3. The method according to claim 1 , wherein, using an additional discharge circuit, at least one of the high-voltage consumers is switched on simultaneously in order to reduce the charge stored in the vehicle electrical system.

4. The method according to claim 1 , further comprising discharging the high-voltage vehicle electrical system, one of (a) following an action of switching off a vehicle ignition, (b) following a collision of the vehicle, and (c) prior to performing servicing procedures.

5. A control device for discharging a high-voltage onboard vehicle electrical system having at least one energy store and a plurality of high-voltage consumers, the control device comprising:
means for electrically separating the energy store from the rest of the vehicle electrical system; and
means for switching on at least one of the high-voltage consumers in order to reduce a charge stored in the vehicle electrical system;
wherein the high-voltage consumers include a DC/DC converter.

6. A vehicle comprising:
a high-voltage vehicle electrical system, which includes at least one energy store, a plurality of switchable high-voltage consumers, and at least one control device, the control device electrically separating the energy store from the rest of the vehicle electrical system when a discharge request is received, the control device switching on at least one of the high-voltage consumers in order to reduce a charge stored in the vehicle electrical system;
wherein the high-voltage consumers include a DC/DC converter.

7. The vehicle according to claim 6 , wherein the high-voltage consumers include a climate-control compressor.

8. The vehicle according to claim 6 , wherein the high-voltage consumers include an electrical steering aid.

Assignees

• Kuehner Jochen
• Trunk Martin
• Winter Arnold
• Mikulec Dragan
• Bosch Gmbh Robert

Inventors

• Kuehner Jochen
• Trunk Martin
• Winter Arnold
• Mikulec Dragan

Classifications

• Y02T90/34

  Cross-Sectional Technologies · mapped topic

• B60L3/0053

  relating to fuel cells · CPC title

• H02M1/32

  Means for protecting converters other than automatic disconnection · CPC title

• B60L3/04

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

• H02M2001/322

  Electricity · mapped topic