Electric cut-off safety device

Patent metadata

Field	Value
Publication number	US-9744860-B2
Application number	US-201314389820-A
Country	US
Kind code	B2
Filing date	Mar 26, 2013
Priority date	Apr 3, 2012
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

An electric cut-off safety device for the power circuits of an electric bipolar vehicle is capable of cutting off two poles. An electric vehicle can include such an electric cut-off safety device.

First claim

The invention claimed is:

1. An electric vehicle comprising a power circuit, said circuit comprising a power battery including two half-packs, a connector for connecting the power circuit to an electric motor of said vehicle, and a connection relay for switching the power circuit on or off, the vehicle being characterized in that the power circuit further comprises a bipolar electric cut-off safety device arranged so as to be capable of disconnecting both poles of the power battery.

2. The vehicle as claimed in claim 1 , the device comprising a socket and a removable plug.

3. The vehicle as claimed in claim 2 , wherein said plug further comprises at least one main fuse on at least one of the poles.

4. The vehicle as claimed in claim 3 , wherein said at least one main fuse is a fast-acting fuse.

5. The vehicle as claimed in claim 2 , wherein said plug comprises a lever for locking to and unlocking from the socket, the lever being capable of providing effort reduction.

6. The vehicle as claimed in claim 2 , further comprising a means for testing for the presence of the plug in the socket.

7. The vehicle as claimed in claim 3 , wherein the power circuit further comprises a first secondary fuse, placed near the electric cut-off safety device.

8. The vehicle as claimed in claim 7 , wherein said first secondary fuse is a slow-acting fuse.

9. The vehicle as claimed in claim 7 , wherein said first secondary fuse is placed on a pole not protected by a main fuse.

10. The vehicle as claimed in claim 7 , the power circuit further comprising a second secondary fuse, placed between the two half-packs.

11. The vehicle as claimed in claim 10 , wherein said second secondary fuse is a slow-acting fuse.

12. The vehicle as claimed in claim 1 , wherein the electric cut-off safety device is placed between the power battery and the connector.

13. The vehicle as claimed in claim 1 , wherein the connection relay is of the single-pole type.

14. The electric vehicle as claimed in claim 1 , wherein the connection relay is placed between the two half-packs.

Assignees

• Renault Sas

Inventors

• Colchen Ludovic
• Lassartesses Robert

Classifications

• H01H2085/0233

  with common casing for fusible elements inserted in more than one phase or more than one circuit · CPC title

• H01H85/545 Primary

  with pivoting fuse carrier (tumbler switch with built-in fuse H01H23/10) · CPC title

• B60L3/04 Primary

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

• H01H85/547

  with sliding fuse carrier · CPC title