Battery cell assemblies

• US 9,147,916 B2
• Filed: 08/17/2010
• Issued: 09/29/2015
• Est. Priority Date: 04/17/2010
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Bronczyk, Steven A., Tom, Kwok, Koetting, William
• Primary Examiner(s): Barcena, Carlos
• Application Number:
  US12/857,908
• Publication Number:
  US 20110256446A1
• Time in Patent Office: 1,869 Days
• Field of Search: 429/120, 429/151, 429/152, 429/153, 429/154, 429/155, 429/158, 429/159, 211/26
• US Class Current: 1/1
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6566 Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers H01M10/6565 takes precedence
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: H01M 50/227 Organic material
• CPC Class Codes: H01M 50/244 Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
• CPC Class Codes: H01M 50/264 for cells or batteries, e.g. straps, tie rods or peripheral frames
• CPC Class Codes: H01M 50/291 characterised by their shape
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery cell assembly in accordance with an exemplary embodiment is provided. The assembly includes a first frame member having a first plurality of tabs extending away from a first peripheral edge of the first frame member. Each tab of the first plurality of tabs has a first coupling feature at a distal end of the respective tab. The assembly further includes a second frame member having a plurality of slots extending into a second peripheral edge of the second frame member. The assembly further includes a battery cell disposed between the first and second frame members, and each first coupling feature of each tab of the first plurality of tabs is configured to engage a respective slot of the plurality of slots of the second frame member to fixedly hold the first and second frame members together.

Claims

1. A battery cell assembly, comprising:

a first frame member having a first rectangular ring-shaped body and a first plurality of tabs extending away from a first peripheral edge of the first rectangular ring-shaped body, each tab of the first plurality of tabs having a first tab portion, the first tab portion extending in a first direction from the first rectangular ring-shaped body and being substantially perpendicular to the first rectangular ring-shaped body, each tab of the first plurality of tabs further having a first coupling feature at a distal end of the first tab portion that extends substantially perpendicular to the first tab portion and toward an inner open region defined by the first rectangular ring-shaped body;

the first peripheral edge further having a first plurality of slots extending into the first peripheral edge, each slot of the first plurality of slots being disposed directly adjacent to a respective tab of the first plurality of tabs;

a second frame member being directly coupled to the first frame member, the second frame member having a second rectangular ring-shaped body and a second plurality of tabs extending away from a second peripheral edge of the second rectangular ring-shaped body, each tab of the second plurality of tabs having a second tab portion, the second tab portion extending in the first direction from the second rectangular ring-shaped body and being substantially perpendicular to the second rectangular ring-shaped body, each tab of the second plurality of tabs further having a second coupling feature at a distal end of the second tab portion that extends substantially perpendicular to the second tab portion and toward an inner open region defined by the second rectangular ring-shaped body;

the second peripheral edge further having a second plurality of slots extending into a second peripheral edge, each slot of the second plurality of slots being disposed directly adjacent to a respective tab of the second plurality of tabs;

a first slot of the second plurality of slots having a depth in a second direction from the second peripheral edge toward an inner open region of the second rectangular ring-shaped body that is greater than a length of an engaging surface of a first coupling feature of a first tab of the first plurality of tabs such that an open space is defined in the second direction between an end of the engaging surface of the first coupling feature of the first tab of the first plurality of tabs and the second rectangular ring-shared body when the first coupling feature of the first tab of the first plurality of tabs is disposed in the first slot of the second plurality of slots and is coupled to the second rectangular ring-shaped body;

the engaging surface of the first coupling feature of the first tab of the first plurality of tabs directly contacting the second rectangular ring-shaped body; and

a battery cell being disposed between the first and second frame members when the first and second frame members are coupled together.

2. The battery cell assembly of claim 1, wherein the battery cell is a lithium-ion pouch type battery cell.

3. The battery cell assembly of claim 1, wherein the first frame member has an identical structure as the second frame member.

4. The battery cell assembly of claim 1, wherein each first tab portion of each tab of the first plurality of tabs is configured to extend over a portion of the second peripheral edge of the second frame member, and the first coupling feature of the each tab is configured to extend into the respective slot of the second frame member.

5. The battery cell assembly of claim 1, wherein a tab of the first plurality of tabs directly communicates with a slot of the first plurality of slots.

6. A battery cell assembly, comprising:

a first frame member having a first rectangular ring-shaped body with first, second, third, and fourth body portions, the first and second body portions being substantially parallel to one another, the third and fourth body portions being substantially parallel to one another and substantially perpendicular to the first and second body portions;

the first body portion having first and second tabs extending away from a first peripheral edge of the first body portion, the first and second tabs being separated from one another and having a gap therebetween;

the third body portion having third and fourth tabs extending away from a first peripheral edge of the third body portion, the third and fourth tabs being separated from one another and having a gap therebetween;

the first tab having a first tab portion extending in a first direction from the rectangular ring-shaped body and being substantially perpendicular to the rectangular ring-shaped body, the first tab further having a first coupling feature at a distal end of the first tab portion that extends substantially perpendicular to the first tab portion in a second direction and toward an inner open region defined by the rectangular ring-shaped body;

a second frame member being directly coupled to the first frame member, the second frame member having a second rectangular ring-shaped body and first, second, third, and fourth tabs extending away from a second peripheral edge of the second rectangular ring-shaped body, the second rectangular ring-shaped body further having first, second, third, and fourth slots extending into the second peripheral edge of the second frame member directly adjacent to the first, second, third, and fourth tabs, respectively, of the second frame member, the first slot having a depth in the second direction greater than a length of an engaging surface of the first coupling feature of the first tab of the first body portion in the second direction such that an open space is defined in the second direction between an end of the engaging surface of the first coupling feature of the first tab of the first body portion and the second rectangular ring-shaped body when the first coupling feature of the first tab of the first body portion is disposed in the first slot and is coupled to the second rectangular ring-shaped body, the engaging surface of the first coupling feature of the first tab directly contacting the second rectangular ring-shaped body; and

a battery cell being disposed between the first and second frame members when the first and second frame members are coupled together.

7. The battery cell assembly of claim 6, wherein the third tab having a second tab portion extending in the first direction from the first rectangular ring-shaped body and being substantially perpendicular to the first rectangular ring-shaped body, the third tab further having a second coupling feature at a distal end of the second tab portion that extends substantially perpendicular to the second tab portion and toward the inner open region defined by the first rectangular ring-shaped body.

8. The battery cell assembly of claim 6, wherein a cross-sectional plane extending through the second frame member passes through the first slot of the second frame member and the first tab of the second frame member.

9. The battery cell assembly of claim 6, wherein the first slot of the second frame member directly communicates with the first tab of the second frame member.

10. A battery cell assembly, comprising:

a first frame member having a first rectangular ring-shaped body and a first plurality of tabs extending away from a first peripheral edge of the first rectangular ring-shaped body, each tab of the first plurality of tabs having a first tab portion, the first tab portion extending in a first direction from the first rectangular ring-shaped body and being substantially perpendicular to the first rectangular ring-shaped body, each tab of the first plurality of tabs further having a first coupling feature at a distal end of the first tab portion that extends substantially perpendicular to the first tab portion and toward an inner open region defined by the first rectangular ring-shaped body;

the first peripheral edge further having a first plurality of slots extending into the first peripheral edge, each slot of the first plurality of slots being disposed adjacent to a respective tab of the first plurality of tabs such that a cross-sectional plane extending through the first frame member passes through a first tab of the first plurality of tabs and a first slot of the first plurality of slots disposed adjacent to the first tab of the first plurality of tabs;

a second frame member being directly coupled to the first frame member, the second frame member having a second rectangular ring-shaped body and a second plurality of tabs extending away from a second peripheral edge of the second rectangular ring-shaped body, each tab of the second plurality of tabs having a second tab portion, the second tab portion extending in the first direction from the second rectangular ring-shaped body and being substantially perpendicular to the second rectangular ring-shaped body, each tab of the second plurality of tabs further having a second coupling feature at a distal end of the second tab portion that extends substantially perpendicular to the second tab portion and toward an inner open region defined by the second rectangular ring-shaped body;

the second peripheral edge further having a second plurality of slots extending into a second peripheral edge, each slot of the second plurality of slots being disposed adjacent to a respective tab of the second plurality of tabs such that the cross-sectional plane further extending through the second frame member passes through a first tab of the second plurality of tabs and a first slot of the second plurality of slots disposed adjacent to the first tab of the second plurality of tabs, the first coupling feature of the first tab of the first plurality of tabs of the first frame member being configured to engage the first slot of the second plurality of slots of the second frame member;

a first slot of the second plurality of slots having a depth in a second direction from the second peripheral edge toward the inner open region of the second rectangular ring-shaped body that is greater than a length of an engaging surface of a first coupling feature of a first tab of the first plurality of tabs such that an open space is defined in the second direction between an end of the engaging surface of the first coupling feature of the first tab of the first plurality of tabs and the second rectangular ring-shaped body when the first coupling feature of the first tab of the first plurality of tabs is disposed in the first slot of the second plurality of slots and is coupled to the second rectangular ring-shaped body;

the engaging surface of the first coupling feature of the first tab of the first plurality of tabs directly contacting the second rectangular ring-shaped body; and

a battery cell being disposed between the first and second frame members when the first and second frame members are coupled together.