Electrical disconnecting device, system comprising a disconnecting device, and method for producing a disconnecting device

Patent metadata

Field	Value
Publication number	US-11764013-B2
Application number	US-202117924884-A
Country	US
Kind code	B2
Filing date	Apr 21, 2021
Priority date	May 13, 2020
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

An electrical disconnecting device comprising a housing, a first terminal lug (4a) inserted into the housing, a second terminal lug (4b) inserted into the housing, a current path forming between the first and second terminal lugs (4a, 4b) in a closed state, a separation point (6) spatially located between the terminal lugs, the separation point (6) disconnecting the current path between the terminal lugs (4a, 4b) in the separated state, a actuator (8) influencing a separation of the separation point (6), a channel formed in the housing between the actuator (8) and the separation point (6), the actuator closing the channel on a side facing away from the separation point, and a connecting element which is arranged on the side of the actuator facing away from the channel and accommodates at least two electrical connections of the actuator, characterized in that the connecting element accommodates at least two contact elements of a switching path, in that the contact elements are each guided into the channel via connecting webs and are short-circuited to one another in the channel at a connecting point in such a way that, when the actuator is triggered, the connecting point is moved away from the contact elements, so that the connecting webs are mechanically disconnected.

First claim

What is claimed is:

1. An electrical disconnecting device comprising:
a housing;
a first terminal lug inserted into the housing;
a second terminal lug inserted into the housing;
a separation point forming a current path between the first and second terminal lugs in a closed state and located spatially between the terminal lugs, wherein the separation point separates the current path between the terminal lugs in a separated state;
an actuator influencing a disconnection of the separation point;
a channel formed in the housing between the actuator and the separation point, the actuator closing the channel on a side facing away from the separation point; and
a connecting element arranged on a side of the actuator facing away from the channel, which accommodates at least two electrical connections of the actuator, wherein
the connecting element accommodates at least two contact elements of a switching path,
the contact elements are each guided into the channel via connecting webs and are short-circuited to one another in the channel at a connecting point, in such a way that when the actuator is triggered, the connecting point is moved away from the contact elements, so that the connecting webs are mechanically disconnected, and
wherein the housing is multipart, at least the terminal lugs and the separation point being arranged in a first housing part and the channel being formed at least partially by the first housing part and the connecting element forming a second housing part.

2. The electrical disconnecting device according to claim 1 , wherein the connecting element accommodates a battery contact,
the battery contact is short-circuited to one of the terminal lug via a connecting web.

3. The electrical disconnecting device according to claim 1 , wherein the connecting element is a plug contact, in particular a plug or a socket.

4. The electrical disconnecting device according to claim 1 , wherein the connecting element is inserted into the channel, radially sealing the channel.

5. The electrical disconnecting device according to claim 1 , wherein
the connecting element has a through-opening extending in the longitudinal direction, and
the actuator is arranged in the through-opening, radially sealing the through-opening.

6. The electrical disconnecting device according to claim 1 , wherein a flowable medium, in particular a gel-like medium, is arranged in the channel between the actuator and the separation point, and wherein the medium flows around the separation point immediately upon separation of the latter.

7. The electrical disconnecting device according to claim 1 , wherein the terminals, the contact elements and/or the battery contact are arranged as contact pins within the connection element.

8. The electrical disconnecting device according to claim 1 , further comprising a bolt movable along the channel arranged between the actuator and the separation point in the channel, and wherein the connecting point is arranged on the bolt in a form-fitting manner.

9. The electrical disconnecting device according to claim 8 , wherein the bolt has a radial recess, in particular a groove, and in that the connecting point is arranged in the recess, and in that the connecting webs are arranged at an angle to the recess, in particular in the longitudinal direction of the channel on the housing.

10. The electrical disconnecting device according to claim 1 , wherein the contact elements and the connecting point are installed in the connection element independently of one another, and in that the contact elements and the connecting point are connected to one another after being installed in the connection element.

11. The electrical disconnecting device according to claim 1 , wherein the actuator is a pyrotechnic ignition pellet.

12. A system comprising the disconnecting device according to claim 1 and at least two automotive battery cables, wherein a first battery cable is connected to the terminal lug and a second battery cable is connected to the second terminal lug.

13. A method of manufacturing a disconnecting device comprising:
inserting a first terminal lug and a second terminal lug into a housing, wherein a separation point is spatially located between the terminal lugs and the terminal lugs form a current path in a closed state;
inserting an actuator causing a separation of the separation point into the housing, such that the actuator closes a channel formed in the housing between the actuator and the separation point on a side facing away from the separation point; and
arranging connections of the actuator in a connecting element on a side facing away from the channel;
arranging at least two contact elements of a switching path in the connecting element, wherein the contact elements are each guided into the channel via connecting webs and are short-circuited to one another in the channel at a connecting point, and the connecting point is arranged on the actuator such that, when the actuator is triggered, the connecting point is moved away from the contact elements, so that the connecting webs are mechanically disconnected, and
wherein the housing is multipart, at least the terminal lugs and the separation point are arranged in a first housing part and the channel is formed at least partially by the first housing part and the connecting element is provided as second housing part.

14. The method according to claim 13 , further comprising forming the contact elements and/or the battery contact from a common stamped grid, the stamped grid being at least partially separated after being arranged in the connecting element.

Assignees

• Auto Kabel Man Gmbh

Inventors

• Betscher Simon
• Moszynski Markus
• Dohrmann Philipp

Classifications

• H01H39/006 Primary

  Opening by severing a conductor · CPC title

• H01H2039/008

  using the switch for a battery cutoff · CPC title

• H01H9/0066

  Auxiliary contact devices (for arc transfer H01H9/38; for electromagnetic relays H01H50/541) · CPC title

• H01H9/167

  Circuits for remote indication · CPC title

• H01M50/574

  Devices or arrangements for the interruption of current · CPC title