Battery cell assembly

Patent metadata

Field	Value
Publication number	US-9882185-B2
Application number	US-201514920750-A
Country	US
Kind code	B2
Filing date	Oct 22, 2015
Priority date	Oct 22, 2015
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A battery cell assembly having first, second, and third battery cells and a unitary wrapping sheet is provided. The unitary wrapping sheet is disposed on a top surface and a bottom surface of the first battery cell. The unitary wrapping sheet is further disposed on a top surface and a bottom surface of the second battery cell. The unitary wrapping sheet is further disposed on a top surface and a bottom surface of the third battery cell. The unitary wrapping sheet is further disposed on and encloses a portion of a combined periphery of the first, second, and third battery cells such that the top surface of the first battery cell, the top surface of the second battery cell, and the top surface of the third battery cell are held substantially parallel to one another.

First claim

What is claimed is:

1. A battery cell assembly, comprising:
a first battery cell having a first pouch-type external housing with a top surface and a bottom surface;
a second battery cell having a second pouch-type external housing with a top surface and a bottom surface;
a third battery cell having a third pouch-type external housing with a top surface and a bottom surface;
a unitary wrapping sheet being disposed on the first battery cell and directly contacting the top surface and the bottom surface of the first pouch-type external housing of the first battery cell;
the unitary wrapping sheet being further disposed on the second battery cell such that the unitary wrapping sheet directly contacts the top surface and the bottom surface of the second pouch-type external housing of the second battery cell;
the unitary wrapping sheet being further disposed on the third battery cell such that the unitary wrapping sheet directly contacts the top surface and the bottom surface of the third pouch-type external housing of the third battery cell; and
the unitary wrapping sheet being further disposed on and enclosing a portion of a combined periphery of the first, second, and third battery cells such that the top surface of the first pouch-type external housing of the first battery cell, the top surface of the second pouch-type external housing of the second battery cell, and the top surface of the third pouch-type external housing of the third battery cell are held substantially parallel to one another.

2. The battery cell assembly of claim 1 , wherein:
the first pouch-type external housing of the first battery cell further includes a first end and a second end;
the second pouch-type external housing of the second battery cell further includes a first end and a second end;
the third pouch-type external housing of the third battery cell further includes a first end and a second end;
the first end of the first pouch-type external housing of the first battery cell, the first end of the second pouch-type external housing of the second battery, and the first end of the third pouch-type external housing of the third battery cell being substantially co-planar with one another; and
the second end of the first pouch-type external housing of the first battery cell, the second end of the second pouch-type external housing of the second battery, and the second end of the third pouch-type external housing of the third battery cell being substantially co-planar with one another.

3. The battery cell assembly of claim 2 , wherein the portion of the combined periphery of the first, second, and third battery cells includes the first and second ends of the first pouch-type external housing of the first battery cell, the first and second ends of the second pouch-type external housing of the second battery cell, and the first and second ends of the third pouch-type external housing of the third battery cell.

4. The battery cell assembly of claim 2 , wherein:
a first sheet portion of the unitary wrapping sheet being disposed on and directly contacting the top surface of the first pouch-type external housing of the first battery cell;
a second sheet portion of the unitary wrapping sheet extending from the first sheet portion, the second sheet portion being disposed proximate to and enclosing the first end of the first pouch-type external housing of the first battery cell;
a third sheet portion of the unitary wrapping sheet extending from the second sheet portion, the third sheet portion being disposed on and directly contacting the bottom surface of the first pouch-type external housing of the first battery cell;
a fourth sheet portion of the unitary wrapping sheet extending from the third sheet portion, the fourth sheet portion being disposed proximate to and enclosing the second end of the first pouch-type external housing of the first battery cell;
a fifth sheet portion of the unitary wrapping sheet extending from the fourth sheet portion, the fifth sheet portion being disposed on and directly contacting both the top surface of the first pouch-type external housing of the first battery cell and the bottom surface of the second pouch-type external housing of the second battery cell;
a sixth sheet portion of the unitary wrapping sheet extending from the fifth sheet portion, the sixth sheet portion being disposed proximate to and enclosing the first end of the second pouch-type external housing of the second battery cell;
a seventh sheet portion of the unitary wrapping sheet extending from the sixth sheet portion, the seventh sheet portion being disposed on and directly contacting both the top surface of the second pouch-type external housing of the second battery cell and the bottom surface of the third pouch-type external housing of the third battery cell;
an eighth sheet portion of the unitary wrapping sheet extending from the seventh sheet portion, the eighth sheet portion being disposed proximate to and enclosing the second end of the third pouch-type external housing of the third battery cell; and
a ninth sheet portion of the unitary wrapping sheet extending from the eighth sheet portion, the ninth sheet portion being disposed on and directly contacting the top surface of the third pouch-type external housing of the third battery cell.

5. The battery cell assembly of claim 4 , wherein:
a tenth sheet portion of the unitary wrapping sheet extending from the ninth sheet portion, the tenth sheet portion being disposed proximate to and enclosing the first end of the third pouch-type external housing of the third battery cell, the tenth sheet portion further being disposed against the sixth sheet portion and the second sheet portion;
an eleventh sheet portion of the unitary wrapping sheet extending from the tenth sheet portion, the eleventh sheet portion being disposed on and directly contacting the third sheet portion such that the third sheet portion is disposed between the eleventh sheet portion and the bottom surface of the first pouch-type external housing of the first battery cell;
a twelfth sheet portion of the unitary wrapping sheet extending from the eleventh sheet portion, the twelfth sheet portion being disposed against the fourth sheet portion, the twelfth sheet portion being further disposed proximate to and enclosing the second end of the second pouch-type external housing of the second battery cell, the twelfth sheet portion being further disposed against the eighth sheet portion; and
a thirteenth sheet portion of the unitary wrapping sheet extending from the twelfth sheet portion, the thirteenth sheet portion being disposed on and directly contacting the ninth sheet portion such that the ninth sheet portion is disposed between the thirteenth sheet portion and the top surface of the third pouch-type external housing of the third battery cell.

6. The battery cell assembly of claim 2 , wherein:
a first sheet portion of the unitary wrapping sheet being disposed on and directly contacting the bottom surface of the first pouch-type external housing of the first battery cell;
a second sheet portion of the unitary wrapping sheet extending from the first sheet portion, the second sheet portion being disposed proximate to and enclosing the second end of the first pouch-type external housing of the first battery cell;
a third sheet portion of the unitary wrapping sheet extending from the second sheet portion, the third sheet portion being disposed on and directly contacting the top surface of the first pouch-type external housing of the first battery cell;
a fourth sheet portion of the unitary wrapping sheet extending from the third sheet portion, the fourth sheet portion being disposed proximate to and enclosing the first end of the first pouch-type external housing of the first battery cell;
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Assignees

• Lg Chemical Ltd

Inventors

• Smith Alexander Jeffrey
• Merriman Robert
• Dudley Scott
• Alamgir Mohamed
• Yang Heekook
• Garascia Michael P

Classifications

• H01M50/227 Primary

  Organic material · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/224 Primary

  Metals · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/124

  having a layered structure · CPC title