Switching element, switching device and method for the operation of the switching device

Patent metadata

Field	Value
Publication number	US-11488795-B2
Application number	US-202016921123-A
Country	US
Kind code	B2
Filing date	Jul 6, 2020
Priority date	Jul 4, 2019
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A switching element (100) that comprises a switching unit (30), a first and a second coil unit (10, 20) for closing and opening the switching unit (30), wherein the first coil unit (10) comprises a first coil (12) and wherein the second coil unit (20) comprises a second coil (22). According to the invention, the first coil unit (10) comprises a first controllable delay circuit (14) that is connected in series with the first coil (12). The invention further relates to a switching device (200) that comprises a switching element (100) according to the invention. The invention further relates to a first and a second method for the operation of the switching device (200) according to the invention.

First claim

The invention claimed is:

1. A switching device ( 200 ) comprising
a switching element ( 100 ), including
a switching unit ( 30 ),
a first and a second coil unit ( 10 , 20 ) for closing and opening the switching unit ( 30 ),
wherein the first coil unit ( 10 ) comprises a first coil ( 12 ) and wherein the second coil unit ( 20 ) comprises a second coil ( 22 ),
wherein the first coil unit ( 10 ) comprises a first controllable delay circuit ( 14 ) that is connected in series with the first coil ( 12 ),
wherein the second coil unit ( 20 ) comprises a second controllable delay circuit ( 24 ) that is connected in series with the second coil ( 22 ),

at least one control unit ( 40 ) for control of the first controllable delay circuit ( 14 ) and the second controllable delay circuit ( 24 ),
a first driver circuit ( 50 ) for driving the first coil unit ( 10 ), and
a second driver circuit ( 60 ) for driving the second coil unit ( 20 ).

2. The switching device ( 200 ) according to claim 1 , wherein
the at least one control unit ( 40 ) is designed to control the first controllable delay circuit ( 14 ) and the second controllable delay circuit ( 24 ) separately from one another.

3. The switching device ( 200 ) according to claim 1 , wherein
the switching device ( 200 ) comprises at least one energy source ( 70 ) that supplies the first coil unit ( 10 ) via the first driver circuit ( 50 ) and the second coil unit ( 20 ) via the second driver circuit ( 60 ).

4. A battery management system that comprises at least one switching device ( 200 ) according to claim 1 .

5. A motor vehicle that comprises at least one switching device ( 200 ) according to claim 1 .

6. The switching device ( 200 ) according to claim 1 , wherein the switching device is configured to maintain the closed state of the switching unit ( 30 ) by the first coil unit ( 10 ) in the presence of a fault state in the second coil unit ( 20 ) or the second driver circuit ( 60 ).

7. The switching device ( 200 ) according to claim 6 , wherein the switching device ( 200 ) is configured to maintain the closed state of the switching unit ( 30 ) by the second coil unit ( 20 ) in the presence of a fault state in the first coil unit ( 10 ) or the first driver circuit ( 50 ).

8. The switching device ( 200 ) according to claim 7 , wherein the switching device ( 200 ) is configured to close the switching unit ( 30 ) by switching on the second coil unit ( 20 ); and switch on the first coil unit ( 10 ) when a fault state is detected in the second coil unit ( 20 ) or in the second driver circuit ( 60 ).

9. The switching device ( 200 ) according to claim 8 , wherein the first coil unit ( 10 ) is switched off after a predefined period of time by the first controllable delay circuit ( 14 ).

10. The switching device ( 200 ) according to claim 1 , wherein the first driver circuit ( 50 ) is configured for only driving the first coil unit ( 10 ).

11. The switching device ( 200 ) according to claim 10 , wherein the second driver circuit ( 60 ) is configured only for driving the second coil unit ( 20 ).

12. A method for operation of a switching device ( 200 ), the switching device comprising
a switching element ( 100 ) including a
switching unit ( 30 ),
a first and a second coil unit ( 10 , 20 ) for closing and opening the switching unit ( 30 ), wherein the first coil unit ( 10 ) comprises a first coil ( 12 ), wherein the second coil unit ( 20 ) comprises a second coil ( 22 ), wherein the first coil unit ( 10 ) comprises a first controllable delay circuit ( 14 ) that is connected in series with the first coil ( 12 ), wherein the second coil unit ( 20 ) comprises a second controllable delay circuit ( 24 ) that is connected in series with the second coil ( 22 ),

at least one control unit ( 40 ) for control of the first controllable delay circuit ( 14 ) and the second controllable delay circuit ( 24 ), a first driver circuit ( 50 ) for driving the first coil unit ( 10 ) and a second driver circuit ( 60 ) for driving the second coil unit ( 20 ), the method comprising:
closing of the switching unit ( 30 ) through simultaneously switching on the first coil unit ( 10 ) and the second coil unit ( 20 );
maintaining the closed state of the switching unit ( 30 ) by the first coil unit ( 10 ) in the presence of a fault state in the second coil unit ( 20 ) or the second driver circuit ( 60 ); and
maintaining the closed state of the switching unit ( 30 ) by the second coil unit ( 20 ) in the presence of a fault state in the first coil unit ( 10 ) or the first driver circuit ( 50 ).

13. The method of claim 12 , further comprising:
closing the switching unit ( 30 ) by switching on the second coil unit ( 20 ); and
switching on the first coil unit ( 10 ) when a fault state is detected in the second coil unit ( 20 ) or in the second driver circuit ( 60 ).

14. The method of claim 13 , wherein the first coil unit ( 10 ) is switched off after a predefined period of time by the first controllable delay circuit ( 14 ).

Assignees

• Bosch Gmbh Robert

Inventors

• Tzivanopoulos Chrysanthos
• Hwang Keonyeol

Classifications

• H01H49/00

  Apparatus or processes specially adapted to the manufacture of relays or parts thereof · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B60L3/00

  Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption (methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00) · CPC title

• H01H33/59

  Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle · CPC title

• H01F7/064

  Circuit arrangements for actuating electromagnets (circuit arrangements for obtaining special operating characteristics H01F7/18; driving circuits for electromagnets making use of a switching regulator H01H47/325) · CPC title