Traction battery pack assembly having a barrier between cell stacks

Patent metadata

Field	Value
Publication number	US-2024088499-A1
Application number	US-202217943453-A
Country	US
Kind code	A1
Filing date	Sep 13, 2022
Priority date	Sep 13, 2022
Publication date	Mar 14, 2024
Grant date	—

Abstract

A battery pack assembly includes a first cell stack having a first side and a second side. The first side is transverse to the second side. A second cell stack is adjacent the first side of first cell stack. A divider has a barrier portion and an attachment portion. The barrier portion is disposed between the first side of the first cell stack and the second cell stack. The attachment portion is secured directly to the second side of the first cell stack.

First claim

What is claimed is:

1 . A battery pack assembly, comprising:
a first cell stack having a first side and a second side, the first side transverse to the second side; a second cell stack adjacent the first side of first cell stack; and a divider having a barrier portion and an attachment portion, the barrier portion disposed between the first side of the first cell stack and the second cell stack, the attachment portion secured directly to the second side of the first cell stack.

2 . The battery pack assembly of claim 1 , wherein the first side of the first cell stack faces the second cell stack.

3 . The battery pack assembly of claim 1 , wherein the attachment portion is adhesively secured to the second side.

4 . The battery pack assembly of claim 1 , further comprising a double sided tape that secures the attachment portion to the second side.

5 . The battery pack assembly of claim 1 , wherein the second side is a vertically upward facing side of the first cell stack.

6 . The battery pack assembly of claim 1 , wherein the first cell stack and the second cell stack each include a plurality of pouch cells.

7 . The battery pack assembly of claim 1 , wherein the divider comprises a first and a second mica layer sandwiching a ceramic layer.

8 . The battery pack assembly of claim 1 , wherein the divider comprises a first and a second mica layer sandwiching a foam layer.

9 . The battery pack assembly of claim 1 , wherein the divider includes a foam spacer attached to the barrier portion, the foam spacer configured to contact the first side to space the barrier portion from the first side.

10 . The battery pack assembly of claim 9 , wherein the foam spacer is a first foam spacer attached to a first side of the barrier portion, and further comprising a second foam spacer attached to an opposite, second side of the barrier portion, the second foam spacer configured to contact the second cell stack to space the barrier portion from the second cell stack.

11 . The battery pack assembly of claim 1 , further comprising a living hinge of the divider, the living hinge connecting the barrier portion to the attachment portion.

12 . The battery pack assembly of claim 1 , further comprising a traction battery pack enclosure that encloses the first cell stack, the second cell stack, and the divider.

13 . The battery pack assembly of claim 1 , wherein the first cell stack and the second cell stack are part of a traction battery pack assembly.

14 . A method of routing flow within a battery pack, comprising:
positioning a barrier portion of a divider adjacent a first side of a cell stack; and securing the barrier portion by attaching an attachment portion of the divider to an second side of the cell stack, the second side transverse to the first side.

15 . The method of claim 14 , wherein the barrier portion is configured to redirect gases and debris vented from the first side of the cell stack.

16 . The method of claim 14 , wherein the second side faces vertically upward, wherein the first side faces another cell stack within an enclosure of a traction battery pack.

17 . The method of claim 14 , wherein the barrier portion is connected to the attachment portion via a living hinge.

18 . The method of claim 14 , further comprising adhesively securing the second side to the second side of the cell stack.

19 . The method of claim 14 , further comprising maintaining a spacing between the barrier portion and the first side of the cell stack using foam.

Assignees

• Ford Global Tech Llc

Inventors

• Zhu Di
• Baldwin Christopher Steven
• Bilezikjian John Peter
• Boddakayala Bhaskara Rao
• Eftekhari Mohammadreza
• Srinivasan Giriraj
• Willi Gene

Classifications

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title

• H01M50/289 Primary

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• H01M50/211 Primary

  adapted for pouch cells · CPC title

• H01M50/26

  Assemblies sealed to each other in a non-detachable manner · CPC title