Electrical assembly

Patent metadata

Field	Value
Publication number	US-11735891-B2
Application number	US-202117495075-A
Country	US
Kind code	B2
Filing date	Oct 6, 2021
Priority date	Oct 31, 2018
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

An electrical assembly may include a bus bar assembly, a fuse connected to the bus bar assembly, a contactor connected to the bus bar assembly, a bracket connected to the bus bar assembly, and/or a cooling member connected to the bracket such that the fuse is indirectly connected to the cooling member via the bus bar assembly and the bracket. A method of operating an electrical assembly may include controlling the contactor to provide current from a power source to a load, generating heat via the current flowing through the fuse, conducting the heat from the fuse to the bus bar assembly, conducting the heat from the bus bar assembly to the cooling member, and/or dissipating the heat via the cooling member.

First claim

What is claimed is:

1. An electrical assembly, comprising:
a bus bar assembly:
a fuse connected to the bus bar assembly;
a contactor connected to the bus bar assembly;
a bracket connected to the bus bar assembly; and
a cooling member connected to the bracket such that the fuse is indirectly connected to the cooling member via the bus bar assembly and the bracket;
wherein a bus bar of the bus bar assembly includes a protrusion configured to facilitate heat transfer from the fuse to the cooling member, and the protrusion is disposed directly between the bracket and the fuse.

2. The electrical assembly of claim 1 , wherein a first terminal of the fuse is fixed directly to and in contact with the bus bar of the bus bar assembly; and
a second terminal of the fuse is fixed directly to and in contact with another bus bar of the bus bar assembly.

3. The electrical assembly of claim 1 , wherein the contactor is fixed directly to and in contact with the bus bar of the bus bar assembly;
the bus bar and an another bus bar of the bus bar assembly are fixed directly to and in contact with the bracket; and
the bracket is fixed directly to and in contact with the cooling member.

4. The electrical assembly of claim 1 , wherein the cooling member includes an at least partially hollow body configured to receive a cooling fluid.

5. The electrical assembly of claim 1 , wherein a potting material is disposed at least partially between the bus bar assembly and the cooling member to facilitate heat transfer from the bus bar assembly to the cooling member.

6. The electrical assembly of claim 1 , wherein the bus bar assembly includes a first bus bar and a second bus bar that are connected to the contactor;
the second bus bar is connected to the fuse;
the bus bar assembly includes a third bus bar connected to the fuse; and
the second bus bar is configured to facilitate heat transfer from the contactor and the fuse to the cooling member.

7. The electrical assembly of claim 1 , including an additional fuse;
wherein the fuse includes a first length; and
the additional fuse includes a second length different than the first length.

8. The electrical assembly of claim 1 , wherein the fuse is configured for an electrical current of at least 500 Amps and at least 1000 V.

9. The electrical assembly of claim 1 , wherein at least a first side, a second side, and a third side of the fuse is exposed.

10. The electrical assembly of claim 1 , wherein a bus bar of the bus bar assembly includes a protrusion configured to facilitate heat transfer from the fuse to the cooling member.

11. The electrical assembly of claim 10 , wherein the protrusion is disposed directly between the bracket and the fuse.

12. The electrical assembly of claim 1 , wherein a second bus bar of the bus bar assembly includes a second protrusion configured to facilitate heat transfer from the fuse to the cooling member.

13. The electrical assembly of claim 1 , wherein the cooling member is configured to dissipate heat generated via electrical current flowing through the fuse, the bus bar assembly, and the contactor.

14. A method of assembling the electrical assembly of claim 1 , the method comprising:
inserting the contactor into the bracket;
connecting the fuse with the bus bar assembly;
connecting the bus bar assembly with the contactor;
connecting the bus bar assembly with the bracket;
disposing the cooling member on or about the bracket; and
connecting the cooling member with the bracket;
wherein disposing the cooling member on the bracket includes inserting the bracket, the bus bar assembly, and the contactor at least partially into a recess of the cooling member.

15. The method of claim 14 , wherein the cooling member is connected with the bracket such that the fuse and the contactor are indirectly connected to the cooling member via the bus bar assembly and the bracket; and
the bus bar assembly is indirectly connected to the cooling member via the bracket.

16. The method of claim 14 , wherein disposing the cooling member on the bracket includes inserting the bracket, the bus bar assembly, and the contactor substantially into the recess of the cooling member.

17. The method of claim 14 , wherein the fuse is connected to bus bar assembly such that at least a first side, a second side, and a third side of the fuse is exposed to ambient air for passive cooling.

18. A method of operating the electrical assembly of claim 1 , the method comprising:
controlling the contactor to provide current from a power source to a load;
generating heat via the current flowing through the fuse;
conducting the heat from the fuse to the bus bar assembly;
conducting the heat from the bus bar assembly to the cooling member; and
dissipating the heat via the cooling member.

19. The method of claim 18 , wherein conducting the heat from the fuse to the bus bar assembly includes conducting heat from the fuse to the protrusion of the bus bar of the bus bar assembly;
the bus bar is electrically connected to the fuse.

20. An electrical assembly, comprising:
a bus bar assembly:
a fuse connected to the bus bar assembly;
a contactor connected to the bus bar assembly;
a bracket connected to the bus bar assembly; and
a cooling member connected to the bracket such that the fuse is indirectly connected to the cooling member via the bus bar assembly and the bracket and one or more additional contactors;
wherein the bracket includes a sleeve for each of the contactor and the one or more additional contactors; and
the contactor is disposed at least partially in the sleeve.

Assignees

• Lear Corp

Inventors

• Rai Rutunj
• Schmidt Robert M
• Anglin Aric

Classifications

• H02B1/18 Primary

  Disposition or arrangement of fuses (for switchgear having a withdrawable carriage H02B11/26) · CPC title

• H02B1/20

  Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards (installations of bus-bars H02G5/00) · CPC title

• H02G5/10

  Cooling · CPC title

• B60R16/0238 Primary

  Electrical distribution centers · CPC title

• H01H85/47

  Means for cooling · CPC title