Battery cell assembly

Patent metadata

Field	Value
Publication number	US-10249920-B2
Application number	US-201514721102-A
Country	US
Kind code	B2
Filing date	May 26, 2015
Priority date	May 26, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A battery cell assembly includes a pouch-type battery cell having a battery member, an external housing, and first and second electrical terminals. The external housing has a central housing portion and a peripheral lip member extending around a periphery of the central housing portion. The central housing portion encloses the battery member therein. The first and second electrical terminals are electrically coupled to the battery member and extend outwardly from the peripheral lip member. The assembly further includes a first tube disposed against the peripheral lip member of the external housing. The peripheral lip member extends around the first tube such that the first tube is at least partially disposed within a first interior region defined by the peripheral lip member.

First claim

What is claimed is:

1. A battery cell assembly, comprising:
a pouch battery cell having an external pouch housing and first and second electrical terminals extending from the external pouch housing; the external pouch housing having a central housing pouch portion and a peripheral lip member extending around a periphery of the central housing pouch portion; the peripheral lip member having a first peripheral lip pouch portion with a first extension pouch portion, a first arcuate-shaped pouch portion, and a first end pouch portion; the first extension pouch portion extending outwardly from the central housing pouch portion in a first direction, the first arcuate-shaped pouch portion being coupled to and between the first extension pouch portion and the first end pouch portion; and
a first tube contacting the first extension pouch portion and the first arcuate-shaped pouch portion of the peripheral lip member of the external pouch housing, the first arcuate-shaped pouch portion being wrapped around a portion of a periphery of a first tube portion of the first tube, the first end pouch portion of the peripheral lip pouch portion of the peripheral lip member having a weld interface with a top surface of the first extension pouch portion such that the first peripheral lip pouch portion extends 360 degrees to define and enclose a first interior space that is sized and shaped to receive the first tube portion of the first tube therein, and the first tube portion of the first tube being disposed within the first interior space; and
wherein the external housing is constructed of a sheet, the sheet being formed by laminating a polymer film on a metal sheet made of aluminum.

2. The battery cell assembly of claim 1 , wherein the first tube is configured to receive heat energy from the pouch battery cell and to transfer at least a portion of the received heat energy to a fluid flowing through the first tube to cool the pouch battery cell.

3. The battery cell assembly of claim 1 , wherein an end portion of the first tube extends outwardly from the peripheral lip member and is not enclosed by the peripheral lip member.

4. The battery cell assembly of claim 1 , wherein the peripheral lip member further includes second, third and fourth peripheral lip pouch portions, the first and second peripheral lip pouch portions extending substantially parallel to one another, the third and fourth peripheral lip pouch portions extending substantially parallel to one another and substantially perpendicular to the first and second peripheral lip pouch portions.

5. The battery cell assembly of claim 4 , wherein the first tube comprises first, second, and third tube portions, the first and second tube portions extending substantially parallel to one another, the third tube portion extending between the first and second tube portions substantially perpendicular to the first and second tube portions.

6. The battery cell assembly of claim 5 , wherein the second tube portion of the first tube being disposed against and contacting the second peripheral lip pouch portion of the peripheral lip member of the external pouch housing of the pouch battery cell, the second peripheral lip pouch portion of the peripheral lip member of the pouch battery cell having a second extension pouch portion, a second arcuate-shaped pouch portion, and a second end pouch portion; the second extension pouch portion extending outwardly from the central housing pouch portion in a second direction opposite to the first direction, the second arcuate-shaped pouch portion being coupled to and disposed between the second extension pouch portion and the second end pouch portion; and
the second arcuate-shaped pouch portion of the second peripheral lip pouch portion of the peripheral lip member of the pouch battery cell being disposed against and wrapped around a portion of a periphery of a second tube portion of the first tube, the second end pouch portion being further coupled to a top surface of the second extension pouch portion such that the second peripheral lip pouch portion defines a second interior space that is sized and shaped to receive the second tube portion of the first tube therein, and the second tube portion of the first tube being disposed within the second interior space.

7. The battery cell assembly of claim 6 , wherein the third tube portion of the first tube is disposed against the third peripheral lip pouch portion of the peripheral lip member of the external pouch housing, the third peripheral lip pouch portion being disposed against and wrapped around a portion of a periphery of the third tube portion such that the third tube portion is at least partially disposed within a third interior space defined by the third peripheral lip pouch portion.

8. The battery cell assembly of claim 4 , wherein the first and second electrical terminals extend outwardly from the fourth peripheral lip pouch portion of the peripheral lip member.

9. The battery cell assembly of claim 1 , wherein the first end pouch portion of the first peripheral lip pouch portion is coupled to the top surface of the first extension pouch portion of the first peripheral lip pouch portion proximate to the central housing pouch portion.

10. The battery cell assembly of claim 1 , wherein the first tube is an aluminum tube.

11. The battery cell assembly of claim 1 , further comprising a second tube being disposed against and contacting the peripheral lip member of the external pouch housing of the pouch battery cell, the peripheral lip member of the pouch battery cell having a second peripheral lip pouch portion; the second peripheral lip pouch portion of the peripheral lip member of the pouch battery cell having a second extension pouch portion, a second arcuate-shaped pouch portion, and a second end pouch portion; the second extension pouch portion extending outwardly from the central housing pouch portion in a second direction opposite to the first direction, the second arcuate-shaped pouch portion being coupled to and disposed between the second extension pouch portion and the second end pouch portion; and
the second arcuate-shaped pouch portion of the second peripheral lip pouch portion of the peripheral lip member of the pouch battery cell being disposed against and wrapped around a portion of a periphery of a first tube portion of the second tube, the second end pouch portion being further coupled to a top surface of the second extension pouch portion such that the second peripheral lip pouch portion defines a second interior space that is sized and shaped to receive the first tube portion of the second tube therein, and the first tube portion of the second tube being disposed within the second interior space.

12. The battery cell assembly of claim 11 , wherein the second tube is configured to receive heat energy from the pouch battery cell and to transfer at least a portion of the received heat energy to a fluid flowing through the second tube to cool the pouch battery cell.

13. The battery cell assembly of claim 11 , wherein the first and second peripheral lip pouch portions extending substantially parallel to one another, the central housing pouch portion being disposed between the first and second peripheral lip pouch portions.

14. The battery cell assembly of claim 13 , wherein the peripheral lip member further includes third and fourth peripheral lip pouch portions extending substantially parallel to one another and substantially perpendicular to the first and second peripheral lip pouch portions, the first and second electrical terminals extending outwardly from the third and fourth peripheral lip pouch portions, respectively.

Assignees

• Lg Chemical Ltd

Inventors

• Dudley Scott
• Merriman Robert
• Brown Todd Richard

Classifications

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/6556 Primary

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M50/548

  on opposite sides of the cell · CPC title