Battery for a motor vehicle

Patent metadata

Field	Value
Publication number	US-12519154-B2
Application number	US-202217833984-A
Country	US
Kind code	B2
Filing date	Jun 7, 2022
Priority date	Jun 17, 2021
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A battery for a motor vehicle has a battery housing including at least one busbar and at least two battery cells arranged in the housing and held by a holder. The busbar electrically conductively connects connection points of at least two of the battery cells. In order to achieve an increased power, heat-conducting paths for cooling are provided by virtue of the busbar and/or the holder being thermally conductively connected to the battery housing by a thermal adhesive.

First claim

What is claimed is:

1 . A battery for a motor vehicle, said battery comprising:
a battery housing; at least two battery cells arranged in the battery housing; a horizontally oriented holder that is positioned over a top side of the battery cells and holds the battery cells in the battery housing; and at least one vertically oriented busbar that electrically conductively connects connection points of at least two of said battery cells, wherein the busbar is positioned on a side surface of the battery cells, wherein the busbar is thermally conductively connected to the battery housing by a first electrically insulating and thermally conductive element and a thermal adhesive, and wherein the holder is thermally conductively connected to the battery housing by a second electrically insulating and thermally conductive element, wherein the second element is positioned within a cut-out defined in the holder.

2 . The battery as claimed in claim 1 , wherein the first element is first ceramic element arranged between the battery housing and the busbar.

3 . The battery as claimed in claim 2 wherein the second element is a second ceramic element arranged between the battery housing and the holder.

4 . The battery as claimed in claim 3 , further comprising a plastic frame arranged between the second ceramic element and the holder.

5 . The battery as claimed in claim 4 , wherein the second ceramic element is arranged in the plastic frame and embedded in the thermal adhesive.

6 . The battery as claimed in claim 3 , wherein the second ceramic element comprises filling openings for receiving the thermal adhesive.

7 . The battery as claimed in claim 1 , wherein the busbar extends up to the battery housing and connects thereto in a heat-transmitting manner by way of the thermal adhesive.

8 . The battery as claimed in claim 1 , wherein the thermal adhesive comprises a synthetic epoxy resin having ceramic or mineral fillers.

9 . An electric or hybrid vehicle comprising the battery as claimed in claim 1 .

10 . The battery as claimed in claim 1 , wherein the busbar and the holder are thermally conductively connected to the battery housing by the thermal adhesive.

11 . The battery as claimed in claim 10 , wherein the busbar is thermally conductively connected to the battery housing by the thermal adhesive that is disposed between the busbar and the battery housing, and the holder is thermally conductively connected to the battery housing by the thermal adhesive that is disposed between the holder and the battery housing.

12 . The battery as claimed in claim 10 , wherein the busbar is thermally conductively connected to the battery housing by the thermal adhesive that is disposed between the busbar and the battery housing.

13 . The battery as claimed in claim 1 , wherein the busbars are positioned against a bottom side surface of the housing in which a cooling channel is disposed.

14 . A battery for a motor vehicle, said battery comprising:
a battery housing; at least two battery cells arranged in the battery housing; a holder that holds the battery cells in the battery housing; and at least one busbar that electrically conductively connects connection points of at least two of said battery cells, wherein the busbar and/or the holder is/are thermally conductively connected to the battery housing by a thermal adhesive, wherein the holder includes a cutout in which a thermally conductive and electronically non-conductive element is positioned, wherein the element includes openings through which the thermal adhesive can be delivered, and wherein a hollow, thermally conductive and electronically non-conductive frame is positioned about a perimeter of the element to limit uncontrolled spread of thermal adhesive beyond the frame.

Assignees

• Porsche Ag
• Dr Ing H C F Porsche Aktiengeseilschaft

Inventors

• Hemetzberger Sebastian
• Heeg Oliver
• Klutinus Rüdiger
• Englmeier Michael
• Wendland Christian
• Habedank Nils

Classifications

• H01M2220/20

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

• B60Y2400/112

  Batteries · CPC title

• B60Y2200/92

  Hybrid vehicles · CPC title

• B60Y2200/91

  Electric vehicles · CPC title

• B60K6/28

  characterised by the electric energy storing means, e.g. batteries or capacitors · CPC title