Support feature for joining of battery cell tabs

Patent metadata

Field	Value
Publication number	US-9406918-B2
Application number	US-201314142996-A
Country	US
Kind code	B2
Filing date	Dec 30, 2013
Priority date	Jul 12, 2010
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A battery assembly including a plurality of battery cells and at least one frame having a support feature formed thereon is disclosed. The support feature supports electrically conductive tabs of the battery cells and militates against damage to the battery assembly during a joining of one of the electrically conductive tabs with another one of the electrically conductive tabs of an adjacent battery cell or during a joining of the electrically conductive tabs of adjacent battery cells with a connector.

First claim

What is claimed is:

1. A battery assembly, comprising:
a first frame disposed about a battery cell, the first frame including a support feature extending outwardly from a portion of a peripheral edge of the first frame, the first battery cell having an electrically conductive tab extending outwardly from the peripheral edge of the first frame; and
a second frame disposed about a second battery cell, the second battery cell having an electrically conductive tab extending outwardly from a peripheral edge of the second frame, the second frame in a stacked relation to and directly contacting the first frame;
wherein one of the first frame and the second frame is disposed intermediate the first battery cell and the second battery cell, and wherein the electrically conductive tab of the first battery cell and the electrically conductive tab of the second battery cell are held together in direct contact with each other when received on the support feature of the first frame;
wherein the electrically conductive tab of the first battery cell extends outwardly from a recess formed in the peripheral edge of the first frame, wherein the peripheral edge of the first frame extends from a first side of the first frame to a second side of the first frame and the recess extends from the first side of the first frame to the support feature at a portion of the peripheral edge of the first frame intermediate the first side of the first frame and the second side of the first frame.

2. The battery assembly of claim 1 , wherein the support feature has a planar surface.

3. The battery assembly of claim 1 , wherein the electrically conductive tab of the second battery cell is bent towards the electrically conductive tab of the first battery cell.

4. The battery assembly of claim 1 , wherein the electrically conductive tab of the first battery cell and the electrically conductive tab of the second battery cell are joined by a welding process.

5. The battery assembly of claim 1 , wherein the support feature is adjacent the recess.

6. The battery assembly of claim 5 , wherein the support feature projects over the recess.

7. The battery assembly of claim 1 , wherein the electrically conductive tab of the second battery cell extends outwardly from a recess formed in the peripheral edge of the second frame.

8. The battery assembly of claim 1 , wherein one of the first frame and the second frame comprises a cooling module.

9. The battery assembly of claim 1 , further comprising:
a third frame disposed about a third battery cell, the third frame including a support feature extending outwardly from a portion of a peripheral edge of the third frame, the third battery cell having an electrically conductive tab extending outwardly from the peripheral edge of the third frame.

10. The battery assembly of claim 9 , wherein the second frame is disposed between the first frame and the third frame.

11. The battery assembly of claim 9 , further comprising:
a fourth frame disposed about a fourth battery cell, the fourth battery cell having an electrically conductive tab extending outwardly from a peripheral edge of the fourth frame, the fourth frame in a stacked relation to the third frame;
wherein, the electrically conductive tab of the third battery cell and the electrically conductive tab of the fourth battery cell are held together in direct contact with each other when received on the support feature of the third frame.

12. The battery assembly of claim 11 , wherein the second frame is disposed between the first frame and the third frame, and the third frame is disposed between the second frame and the fourth frame.

13. The battery assembly of claim 11 , wherein one of the first frame and the second frame comprises a cooling module, and one of the third frame and the fourth frame comprises a cooling module.

14. The battery assembly of claim 1 , further comprising a connector coupled to the support feature, the connector electrically coupling the electrically conductive tab of the first battery cell and the electrically conductive tab of the second battery cell.

15. The battery assembly of claim 1 , wherein the first battery cell and the second battery cell are electrically connected in series.

16. The battery assembly of claim 1 , wherein one of the first frame and the second frame further comprises an ear formed adjacent an edge thereof, the ear including an aperture receiving a tension rod of a compression assembly.

17. The battery assembly of claim 1 , wherein the support feature is integrally formed with the first frame.

18. The battery assembly of claim 1 , wherein the first frame and the second frame are each substantially planar and the support feature has a generally rectangular shape with a planar surface sloped with respect to the peripheral edge of the first frame.

19. The battery assembly of claim 1 , wherein the electrically conductive tab of the first battery cell and the electrically conductive tab of the second battery cell are each bent in a direction towards the support feature of the first frame and received on the support feature of the first frame.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Barter Stuart D
• Martz William L
• Kaufman Benjamin D
• Duffield Michael

Classifications

• H01M50/543 Primary

  Terminals · CPC title

• H01M50/522

  Inorganic material · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title

• H01M50/548

  on opposite sides of the cell · CPC title