Battery cell assembly

• US 9,484,559 B2
• Filed: 10/10/2014
• Issued: 11/01/2016
• Est. Priority Date: 10/10/2014
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Arena, Anthony
• Primary Examiner(s): Ruddock, Ula C
• Assistant Examiner(s): CHUO, TONY SHENG HSIANG
• Application Number:
  US14/511,389
• Publication Number:
  US 20160104874A1
• Time in Patent Office: 753 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/6555 arranged between the cells
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/105 Pouches or flexible bags
• CPC Class Codes: H01M 50/20 Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders structural combination of accumulators with charging apparatus H01M10/46
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery cell assembly having first and second frame members is provided. The first frame member has a first rectangular ring-shaped body and a first coupler portion. The first coupler portion has a first tab member with a first metal trim clip member coupled thereto. The second frame member has a second rectangular ring-shaped body and a second coupler portion. The second coupler portion has first and second substantially flat walls and first and second peripheral wall portions defining an interior region. The second substantially flat wall has an aperture extending therethrough. The first metal trim clip member is disposed through the aperture and into the interior region of the second coupler portion, and engages an inner surface of the second substantially flat wall to couple the second frame member to the first frame member.

Claims

1. A battery cell assembly, comprising:

a first frame member having a first rectangular ring-shaped body and a first coupler portion;

the first coupler portion being coupled to and extending outwardly from a first end of the first rectangular ring-shaped body in a first direction, the first coupler portion having a first tab member;

a first metal trim clip member being disposed on and coupled to the first tab member;

a second frame member having a second rectangular ring-shaped body and a second coupler portion;

the second coupler portion being coupled to and extending outwardly from a first end of the second rectangular ring-shaped body;

the second coupler portion having first and second substantially flat walls and first and second peripheral wall portions;

the first and second peripheral wall portions of the second coupler portion extending outwardly from a first side of the first substantially flat wall of the second coupler portion, the second substantially flat wall of the second coupler portion being coupled to and between the first and second peripheral wall portions of the second coupler portion and spaced apart from the first substantially flat wall of the second coupler portion;

the first and second peripheral wall portions and the first and second substantially flat walls of the second coupler portion defining a first interior region therebetween, the second substantially flat wall of the second coupler portion having a first aperture extending therethrough;

the first metal trim clip member being at least partially disposed through the first aperture and into the first interior region of the second coupler portion, the first metal trim clip member being adapted to contact and to engage an inner surface of the second substantially flat wall of the second coupler portion in the first interior region to couple the second frame member to the first frame member; and

a first battery cell being disposed on and held between the first and second frame members.

2. The battery cell assembly of claim 1, wherein the first frame member further includes a third coupler portion;

the third coupler portion being coupled to and extending outwardly from a second end of the first rectangular ring-shaped body;

the third coupler portion having a second tab member;

a second metal trim clip member being disposed on and coupled to the second tab member;

the second frame member further having a fourth coupler portion;

the fourth coupler portion being coupled to and extending outwardly from a second end of the second rectangular ring-shaped body;

the fourth coupler portion having first and second substantially flat walls and first and second peripheral wall portions;

the first and second peripheral wall portions of the fourth coupler portion extending outwardly from a first side of the first substantially flat wall of the fourth coupler portion, the second substantially flat wall of the fourth coupler portion being coupled to and between the first and second peripheral wall portions of the fourth coupler portion and spaced apart from the first substantially flat wall of the fourth coupler portion;

the first and second peripheral wall portions and the first and second substantially flat walls of the fourth coupler portion defining a second interior region therebetween, the second substantially flat wall of the fourth coupler portion having a second aperture extending therethrough; and

the second metal trim clip member being at least partially disposed through the second aperture and into the second interior region of the fourth coupler portion, the second metal trim clip member being adapted to contact and to engage an inner surface of the second substantially flat wall of the fourth coupler portion in the second interior region to further couple the second frame member to the first frame member.

3. The battery cell assembly of claim 1, wherein the first coupler portion of the first frame member further includes a first substantially flat wall and first and second peripheral wall portions;

the first and second peripheral wall portions of the first coupler portion extending in a second direction from the first substantially flat wall of the first coupler portion;

the first tab member extending in the second direction from the first substantially flat wall of the first coupler portion and being disposed between the first and second peripheral wall portions of the first coupler portion.

4. The battery cell assembly of claim 3, wherein the first coupler portion of the first frame member further includes a second substantially flat wall and third and fourth peripheral wall portions, the third and fourth peripheral wall portions extending in a third direction from the first substantially flat wall of the first coupler portion, the third direction being opposite to the second direction, the second substantially flat wall of the first coupler portion being coupled to and between the third and fourth peripheral wall portions of the first coupler portion and spaced apart from the first substantially flat wall of the first coupler portion;

the third and fourth peripheral wall portions and the first and second substantially flat walls of the first coupler portion defining a second interior region therebetween, the second substantially flat wall having a second aperture extending therethrough.

5. The battery cell assembly of claim 4, further comprising a bottom endcap member, a second metal trim clip member, and a second battery cell;

the bottom endcap member having a rectangular body and a first endcap coupler portion;

the first endcap coupler portion being coupled to and extending outwardly from a first end of the rectangular body, the first endcap coupler portion having a first endcap tab member;

the second metal trim clip being disposed on and coupled to the first endcap tab member of the first endcap coupler portion; and

the second metal trim clip member being at least partially disposed through the second aperture and into the second interior region of the first coupler portion, the second metal trim clip member being adapted to contact and engage an inner surface of second substantially flat wall of the first coupler portion in the second interior region to couple the bottom endcap member to the first frame member;

the second battery cell being disposed on and held between the bottom endcap member and the first frame member.

6. The battery cell assembly of claim 1, wherein the second coupler portion of the second frame member having a second tab member extending in the first direction.

7. The battery cell assembly of claim 6, further comprising a top endcap member, a second metal trim clip member, and a second battery cell;

the top endcap member having a rectangular body and a first endcap coupler portion;

the first endcap coupler portion being coupled to and extending outwardly from a first end of the rectangular body, the first endcap coupler portion having a first substantially flat wall and a rectangular ring-shaped peripheral wall portions disposed on the substantially flat wall that define a second interior region therebetween, the first substantially flat wall of the first endcap coupler portion having a second aperture extending therethrough;

the second metal trim clip member being coupled to the second tab member of the second coupler portion of the second frame member, the second metal trim clip being at least partially disposed through the second aperture and into the second interior region of the first endcap coupler portion, the second metal trim clip member being adapted to contact and to engage an inner surface of the first substantially flat wall of the first endcap coupler portion in the second interior region to couple the second frame member to the top endcap member; and

the second battery cell being disposed on and held between the top endcap member and the second frame member.

8. The battery cell assembly of claim 1, wherein the first frame member further includes a thermally conductive plate having first and second plate portions, the second plate portion being coupled to an end of the first plate portion and extending substantially perpendicular to the first plate portion, the first plate portion being coupled to the first rectangular ring-shaped body of the first frame member and disposed against the first battery cell, a portion of the first plate portion extending through a wall of the first rectangular ring-shaped body, the second plate portion being disposed on an exterior surface of the first rectangular ring-shaped body.

9. The battery cell assembly of claim 1, wherein the first rectangular ring-shaped body and the first coupler portion of the first frame member are constructed of plastic.

10. The battery cell assembly of claim 1, wherein the first metal trim clip member being centered about a central plane and having first and second wall portions, the first wall portion having first and second ends, the second wall portion having first and second ends, the first end of the first wall portion being integrally coupled to the first end of the second wall portion, the first and second wall portions defining a gap between the second end of the first wall portion and the second end of the second wall portion;

the first wall portion defining a first trim tab and a first v-shaped biasing member, the first trim tab of the first wall portion extending across a portion of the gap toward the second wall portion, the first v-shaped biasing member having an apex pointing away from the second wall portion;

the second wall portion defining a second trim tab and a second v-shaped biasing member, the second trim tab extending across a portion of the gap toward the first wall portion, the second v-shaped biasing member having an apex pointing away from the first wall portion;

the first trim tab and the second trim tab being adapted to contact opposite sides of the first tab member of the first coupler portion of the first frame member to hold the first tab member therebetween; and

the first v-shaped biasing member and the second v-shaped biasing member adapted to contact and engage the inner surface of the second substantially flat wall of the second coupler portion of the second frame member in the first interior region to couple the second frame member to the first frame member.