High-voltage vehicle network of a motor vehicle, quick-break switch and method of operating the high-voltage vehicle network

Patent metadata

Field	Value
Publication number	US-2016339784-A1
Application number	US-201615230627-A
Country	US
Kind code	A1
Filing date	Aug 8, 2016
Priority date	Feb 8, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

A high-voltage motor vehicle electric system contains a high-voltage battery and a consumer network which are interconnected by an electric cable, and a quick-break switch for disconnecting the high-voltage battery from the consumer network. The quick-break switch receives an airbag signal. The airbag signal is used for actuating the quick-break switch to sever the electric cable supplying power to the consumer network.

First claim

1 . A high-voltage vehicle network of a motor vehicle, the high-voltage network comprising:
a high-voltage battery; a consumer network; an electrical cable connecting said high-voltage battery to said consumer network; and a quick-break switch for disconnecting said high-voltage battery from said consumer network, said quick-break switch receiving an airbag signal.

2 . The high-voltage vehicle network according to claim 1 , wherein:
said electrical cable includes said quick-break switch, said quick-break switch contains a relay drive, an auxiliary drive, a relay with two relay contacts, and a magnetic drive; said magnetic drive contains a control cable connected to said relay drive; said auxiliary drive contains an activation cable and receives the airbag signal; and said relay is open when not electrically powered.

3 . The high-voltage vehicle network according to claim 2 , wherein said magnetic drive contains a movable impact armature that acts on said auxiliary drive.

4 . The high-voltage vehicle network according to claim 2 , wherein:
said auxiliary drive contains a separating element for cutting through said control cable; and said separating element has a punch with a guide and a hole formed therein perpendicular to said guide of said punch, and wherein said control cable is passed through said hole.

5 . The high-voltage vehicle network according to claim 2 , wherein said auxiliary drive is in operative connection with an insulating bulkhead for mechanically disconnecting said relay contacts.

6 . The high-voltage vehicle network according to claim 2 , wherein said electrical cable has over current protection and a short-circuit bridge connected in parallel with said consumer network, said over current protection is disposed on a battery side of said short-circuit bridge, and said short-circuit bridge contains said quick-break switch.

7 . The high-voltage vehicle network according to claim 6 , wherein said quick-break switch contains a semiconductor switch or a relay, which is closed when not electrically powered.

8 . The high-voltage vehicle network according to claim 2 , wherein said electrical cable contains said quick-break switch which has said relay and a semiconductor switch that are connected in series.

9 . The high-voltage vehicle network according to claim 6 , wherein said over current protection is a fusible link.

10 . A quick-break switch, comprising:
an auxiliary drive; a relay drive; a relay having a magnetic drive with a control cable connected to said relay drive; and said auxiliary drive having an activation cable and a separating element for severing said control cable.

11 . The quick-break switch according to claim 10 , wherein said auxiliary drive is a pyrotechnic drive.

12 . A method of operating a high-voltage vehicle network of a motor vehicle, which comprises the step of:
using an airbag signal as a trigger condition for interrupting an electrical connection between a high-voltage battery and a consumer network of the high-voltage vehicle network.

Assignees

• Ellenberger & Poensgen

Inventors

• Birner Markus
• Engewald Manuel
• Gottschalk Klaus
• Gross Patric
• Meckler Peter
• Miklis Markus
• Pimenta Ricardo
• Schneider Ewald

Classifications

• H01H50/20

  movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil · CPC title

• B60K28/14

  responsive to accident or emergency, e.g. deceleration, tilt of vehicle · CPC title

• B60L3/0007 Primary

  Measures or means for preventing or attenuating collisions · CPC title

• H01H39/00

  Switching devices actuated by an explosion produced within the device and initiated by an electric current · CPC title

• B60L3/04 Primary

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