High voltage laminated power distribution system with integrated fuses

Patent metadata

Field	Value
Publication number	US-11670928-B2
Application number	US-202117222437-A
Country	US
Kind code	B2
Filing date	Apr 5, 2021
Priority date	Nov 13, 2018
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A high voltage distribution system is provided with multiple fuses. The high voltage distribution system includes multiple laminated busbars that are electrically coupled to a battery and to the multiple fuses. Busbars are electrically coupled to the one or more fuses via electrical connections between the busbars and the fuses. The electrical connections can pass through other busbars without having an electrical coupling to the other busbars. An insulating layer may be used between the busbars to prevent overcurrent events. The configuration, size, and position of each busbar is selected based on the electrical requirements of components that are electrically coupled to the busbar and based on the prevention of overcurrent events.

First claim

What is claimed is:

1. A system comprising:
an unswitched busbar and a switched busbar wherein the unswitched busbar and the switched busbar are located within a battery enclosure;
an insulating layer located between the unswitched busbar and the switched busbar; and
an electrically conductive pad;
wherein:
a top surface of the switched busbar is laminated to a bottom surface of the insulating layer;
a bottom surface of the unswitched busbar is laminated to a top surface of the insulating layer; and

the electrically conductive pad is electrically coupled to the switched busbar.

2. The system of claim 1 , wherein the insulating layer comprises one of a powder coating, plastic, heat shrink, or rubber.

3. The system of claim 1 , wherein less than all of a top surface of the switched busbar is laminated to the bottom surface of the insulating layer.

4. The system of claim 1 , wherein less than all of a bottom surface of the unswitched busbar is laminated to the top surface of the insulating layer.

5. The system of claim 1 , further comprising a battery, wherein the battery is electrically coupled to one of the switched busbar and the unswitched busbar.

6. The system of claim 5 , further comprising voltage reduction circuitry, wherein the voltage reduction circuitry is electrically coupled to the battery.

7. The system of claim 1 , further comprising:
a fuse located within the battery enclosure, wherein:
the fuse is electrically coupled to the electrically conductive pad.

8. The system of claim 7 , wherein the fuse is electrically coupled to a load in an electric vehicle.

9. The system of claim 7 , wherein the fuse is located above the switched busbar.

10. The system of claim 9 , wherein the insulating layer is a first insulating layer, further comprising a second insulating layer, wherein the second insulating layer is located between the switched busbar and the fuse.

11. The system of claim 1 , further comprising:
an electrically conductive vertical interconnect, wherein:
the electrically conductive vertical interconnect is electrically coupled to the switched busbar and passes through the unswitched busbar without an electrical coupling to the unswitched busbar.

12. The system of claim 1 , further comprising a capacitator, wherein the capacitor is electrically coupled to one of the switched busbar and the unswitched busbar.

13. The system of claim 1 , wherein the switched busbar and the unswitched busbar are made of copper or aluminum.

14. The system of claim 1 , wherein one of the switched busbar and the unswitched busbar is electrically coupled to a charging port of the battery enclosure.

15. A system comprising:
a battery enclosure;
one or more battery modules;
a switched busbar;
an unswitched busbar;
an insulating layer; and
an electrically conductive pad, wherein:
the switched busbar, the unswitched busbar, the one or more battery modules, the insulating layer and the pad are located within the battery enclosure;
a top surface of the switched busbar is laminated to a bottom surface of the insulating layer;
a bottom surface of the unswitched busbar is laminated to a top surface of the insulating layer;
the switched busbar and the unswitched busbar are electrically coupled to the one or more battery modules; and
the electrically conductive pad is electrically coupled to the switched busbar.

16. A method of manufacturing, the method comprising:
providing a switched busbar and an unswitched busbar;
providing a battery enclosure;
providing an insulator;
providing an electrically conductive pad; and
installing the switched busbar, the unswitched busbar the insulator and the electrically conductive pad in the battery enclosure wherein:
a top surface of the switched busbar is laminated to a bottom surface of the insulator; and
a bottom surface of the unswitched busbar is laminated to a top surface of the insulator.

17. The method of claim 16 , further comprising:
providing a fuse; and
electrically coupling, within the battery enclosure, the fuse to the switched busbar.

18. The method of claim 16 , further comprising:
providing an electrically conductive vertical interconnect; and
electrically coupling the vertical interconnect to the switched busbar by passing through the unswitched without an electrical coupling to the unswitched busbar.

Assignees

• Rivian Ip Holdings Llc

Inventors

• Baseri Ehsan
• Butterfield Kyle
• O'Neil Kyle
• Collins Tyler
• Wynn Nathaniel C

Classifications

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/505

  comprising a single busbar · CPC title

• H02G5/005 Primary

  Laminated bus-bars · CPC title

• H01M50/51

  Connection only in series · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title