Traction battery of a motor vehicle

Patent metadata

Field	Value
Publication number	US-12463293-B2
Application number	US-202217731315-A
Country	US
Kind code	B2
Filing date	Apr 28, 2022
Priority date	Apr 29, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A traction battery for a motor vehicle includes a plurality of battery modules. The battery modules of the traction battery are electrically coupled by electrical busbars. Each battery module includes a module housing and battery cells accommodated in the respective module housing. The battery cells of each battery module are electrically coupled. At least one thermally conductive body is arranged between the electrical busbars, which are used to electrically couple the battery modules, and an adjoining housing of the traction battery or an adjoining structural component of a body of the motor vehicle or an adjoining module housing of a battery module.

First claim

What is claimed is:

1 . A traction battery for a motor vehicle, the traction battery comprising:
a plurality of battery modules, wherein each battery module comprises a module housing and battery cells accommodated in the respective module housing, wherein the battery cells of each battery module are electrically coupled together; electrical busbars that electrically couple together the plurality of battery modules, wherein each of the electrical busbars comprises (i) a busbar core made of an electrically conductive material, and (ii) a busbar housing made of an electrically non-conductive material that surrounds an outside of the busbar core, a first thermally conductive body arranged between (i) a busbar housing of a first electrical busbar of the electrical busbars, and (ii) one of an adjoining housing of the traction battery, an adjoining structural component of a body of the motor vehicle, or an adjoining module housing of one of the battery modules, a second thermally conductive body arranged between the busbar core and the busbar housing of the first electrical busbar, wherein the second thermally conductive body is a potting compound body.

2 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is a thermally conductive pad.

3 . The traction battery as claimed in claim 1 , wherein
at least one of the electrical busbars comprises a busbar sheath bearing directly against the busbar core.

4 . The traction battery as claimed in claim 3 , wherein the first thermally conductive body couples the busbar directly to a cover component or a bottom component.

5 . The traction battery as claimed in claim 3 , wherein the first thermally conductive body indirectly couples the first electrical busbar to a frame component, the frame component forming a side wall of a housing of the traction battery or the adjoining structural component of the body.

6 . The traction battery as claimed in claim 1 , wherein the adjoining housing of the traction battery or the adjoining structural component of the body of the motor vehicle or the adjoining module housing of the battery module is actively cooled and/or is coupled to an actively cooled component.

7 . The traction battery as claimed in claim 1 , wherein the adjoining housing of the traction battery or the adjoining structural component of the body of the motor vehicle or the adjoining module housing of the battery module is fluid-cooled and/or is coupled to a fluid-cooled component.

8 . A motor vehicle comprising the traction battery of claim 1 .

9 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining housing of the traction battery.

10 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between and directly contacts (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining housing of the traction battery.

11 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining structural component of the body of the motor vehicle.

12 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between and directly contacts (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining structural component of the body of the motor vehicle.

13 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining module housing.

14 . The traction battery as claimed in claim 1 , wherein the first thermally conductive body is arranged between and directly contacts (i) the busbar housing of the first electrical busbar of the electrical busbars and (ii) the adjoining module housing.

15 . The traction battery as claimed in claim 1 , wherein the busbar housing of the first electrical busbar of the electrical busbars is sandwiched directly between the first and second thermally conductive bodies.

16 . A traction battery for a motor vehicle, the traction battery comprising:
a plurality of battery modules, wherein each battery module comprises a module housing and battery cells accommodated in the respective module housing, wherein the battery cells of each battery module are electrically coupled together; electrical busbars that electrically couple together the plurality of battery modules, wherein each of the electrical busbars comprises (i) a busbar core made of an electrically conductive material, and (ii) a busbar housing made of an electrically non-conductive material that surrounds an outside of the busbar core, a first thermally conductive body arranged between (i) a busbar housing of a first electrical busbar of the electrical busbars, and (ii) one of an adjoining housing of the traction battery, an adjoining structural component of a body of the motor vehicle, or an adjoining module housing of one of the battery modules, a second thermally conductive body arranged between the busbar core and the busbar housing of the first electrical busbar, wherein the second thermally conductive body directly contacts both the busbar core and the busbar housing of the first electrical busbar.

Assignees

• Porsche Ag

Inventors

• Schiek Werner
• Brodersen Ronny

Classifications

• H01M2220/20

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

• H01M50/204 Primary

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

• B60L50/60

  using power supplied by batteries (in combination with fuel cells B60L50/75) · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title