Method of manufacturing secondary battery

Patent metadata

Field	Value
Publication number	US-10062896-B2
Application number	US-201314420997-A
Country	US
Kind code	B2
Filing date	Nov 8, 2013
Priority date	Nov 8, 2012
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A secondary battery manufactured according to the method may have improved electrolyte solution impregnation properties, ionic conductivity, electronic conductivity and the like and, as such, may have improved electrochemical performance.

First claim

The invention claimed is:

1. A method of manufacturing a secondary battery, built in a battery case, having an electrode assembly impregnated with an electrolyte solution, the method consisting of:
injecting an electrolyte solution into a chamber;
soaking an electrode assembly, which has a separator interposed between a cathode and an anode, in the electrolyte solution contained in the chamber;
moving the electrode assembly with the electrolyte solution into a battery case; and
sealing the battery case,
wherein the electrolyte solution has a viscosity of 1 cP to 4 cP.

2. The method according to claim 1 , wherein a volume of the chamber is 1.5 times or more with respect to a volume of the electrode assembly.

3. The method according to claim 1 , wherein a volume of the chamber is 2 times or more with respect to a volume of the electrode assembly.

Assignees

• Lg Chemical Ltd

Inventors

• Chung Mikyung
• Chang Sung-Kyun
• Kim Soojin
• Uhm In Sung
• Chang Won Seok

Classifications

• H01M10/052 Primary

  Li-accumulators · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/058 Primary

  Construction or manufacture · CPC title

• H01M50/609

  Arrangements or processes for filling with liquid, e.g. electrolytes · CPC title