Pouch type battery and method of using the same

Patent metadata

Field	Value
Publication number	US-9564615-B2
Application number	US-201213485549-A
Country	US
Kind code	B2
Filing date	May 31, 2012
Priority date	Jul 15, 2011
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A pouch type battery and a method of using the pouch type battery that includes an electrode assembly that includes a first electrode plate, a second electrode plate, and a separator interposed between the first and second electrode plates, and a pouch case that includes the electrode assembly and an electrolyte, wherein the pouch case includes an additional electrolyte inlet that protrudes from the pouch case.

First claim

What is claimed is:

1. A pouch battery comprising:
an electrode assembly that comprises a first electrode plate, a second electrode plate, and a separator interposed between the first and second electrode plates;
a first lead tab that is electrically connected to the first electrode plate;
a second lead tab that is electrically connected to the second electrode plate; and
a pouch case comprising a first surface and a second surface facing each other with the electrode assembly disposed therebetween, the pouch case defines an inner space accommodating the electrode assembly and an electrolyte and a terrace portion that has an outer edge formed at one edge of the inner space, wherein the first and second lead tabs protrude from the outer edge of the terrace portion, and
wherein a portion of the first surface extends outward from a side of the pouch case, a portion of the second surface overlaps the portion of the first surface, and outer edges of the portions of the first and second surfaces are sealed each other to provide an electrolyte inlet formed as an integral part of the pouch case.

2. The pouch battery of claim 1 , wherein the electrolyte inlet protrudes from an upper portion of the pouch case.

3. The pouch battery of claim 1 , wherein the electrolyte inlet is disposed in a same direction as the direction of the first lead tab and the second lead tab.

4. The pouch battery of claim 1 , wherein the electrolyte inlet is between the first lead tab and the second lead tab.

5. The pouch battery of claim 1 , wherein the electrolyte inlet is sealed by a sealing portion formed along an outer surface of the electrolyte inlet.

6. The pouch battery of claim 5 , wherein an inner space of the electrolyte inlet is spatially connected to an inner space of the pouch case.

7. The pouch battery of claim 5 , wherein an edge of the electrolyte inlet is able to be cut, and, after cutting the edge, the cut edge of the electrolyte inlet is re-sealed by a sealing portion that is formed along the edge of the electrolyte inlet.

8. The pouch battery of claim 1 , wherein the electrolyte inlet has a length in a range from about 3 cm to about 7 cm.

9. The pouch battery of claim 1 , wherein the electrolyte inlet is formed on a terrace portion formed on a side of the pouch case.

10. The pouch battery of claim 1 , wherein the pouch battery is used for medium and large energy storage battery packs.

Assignees

• Ahn Chang-Bum
• Samsung Sdi Co Ltd

Inventors

• Ahn Chang-Bum

Classifications

• H01M50/636 Primary

  Closing or sealing filling ports, e.g. using lids · CPC title

• H01M50/55

  on the same side of the cell · CPC title

• H01M50/627 Primary

  Filling ports · CPC title

• H01M50/557

  Plate-shaped terminals · CPC title

• H01M50/116

  characterised by the material · CPC title