Plasma generating apparatus for secondary battery

Patent metadata

Field	Value
Publication number	US-2020185680-A1
Application number	US-201816352016-A
Country	US
Kind code	A1
Filing date	Apr 6, 2018
Priority date	May 24, 2017
Publication date	Jun 11, 2020
Grant date	—

Abstract

The present invention relates to a plasma generating apparatus for a secondary battery. The plasma generating apparatus for the secondary battery comprises a transfer roller that transfers a separator, a metal member disposed within the transfer roller, a plasma generating member that interacts with the metal member to generate a plasma and irradiate the generated plasma onto a surface of the separator, and a protrusion member that causes a portion of the separator closely attached to the transfer roller to protrude and forms an adhesion area, which is adhesive, and a non-adhesion area, which is non-adhesive or less adhesive than the adhesion area, by allowing the plasma to be irradiated onto the adhesion area and no plasma or less plasma to be irradiated onto the non-adhesion area.

First claim

1 . A plasma generating apparatus for a secondary battery, comprising:
a transfer roller that transfers a separator; a metal member disposed in the transfer roller; a plasma generating member that interacts with the metal member to generate a plasma and irradiate the generated plasma onto a surface of the separator; and a protrusion member that causes a portion of the separator closely attached to the transfer roller to protrude and forms an adhesion area, which is adhesive, and a non-adhesion area, which is non-adhesive or less adhesive than the adhesion area, by allowing the plasma to be irradiated onto the adhesion area and no plasma or less plasma to be irradiated onto the non-adhesion area.

2 . The plasma generating apparatus of claim 1 , wherein the separator has a bottom surface closely attached to the transfer roller, a top surface that is protruded by the protrusion member, and a connection surface that connects the bottom surface and the top surface, and
the plasma is irradiated onto the bottom surface and the top surface to form the adhesion area that is adhesive and to form the non-adhesion area that is non-adhesive or less adhesive than the adhesion area, on the non-adhesion area corresponding to the connection surface, due to the irradiated plasma being concentrated onto the top surface.

3 . The plasma generating apparatus of claim 1 , wherein the protrusion member has a ring shape along a circumferential surface of the transfer roller, and at least one protrusion is provided in a longitudinal direction of the transfer roller.

4 . The plasma generating apparatus of claim 3 , wherein the protrusion member having the ring shape is provided to be moved and fixed to the transfer roller along the longitudinal direction of the transfer roller.

5 . The plasma generating apparatus of claim 3 , wherein the protrusion member having the ring shape is provided to be integrated with the transfer roller.

6 . The plasma generating apparatus of claim 1 , wherein the protrusion member is made of a same material as the transfer roller.

7 . The plasma generating apparatus of claim 2 , wherein the bottom surface and the top surface are provided as surfaces parallel to a longitudinal direction of the transfer roller, and the connection surface is provided as a vertical surface perpendicular to the bottom surface and the top surface.

8 . The plasma generating apparatus of claim 1 , wherein the plasma generating member comprises:
a main body disposed in a width direction of the separator; and an electrode piece disposed in a longitudinal direction of the main body to generate the plasma between the metal member and the main body and thereby to irradiate the generated plasma onto the surface of the separator.

9 . The plasma generating apparatus of claim 8 , wherein the plasma generating member further comprises a switch that applies power to the electrode piece to generate the plasma.

10 . The plasma generating apparatus of claim 8 , wherein the main body is made of a non-metallic material.

11 . The plasma generating apparatus of claim 10 , wherein the main body is made of a ceramic.

12 . The plasma generating apparatus of claim 8 , wherein the electrode piece is provided as a corona discharge electrode.

13 . The plasma generating apparatus of claim 8 , wherein the electrode piece is inserted into an insertion groove provided in an outer surface of the main body.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Duck Hoe
• Kim Min Wook
• Cho Ju Hyeon
• Ku Cha Hun
• Lee Sang Kyun

Classifications

• H01M10/058 Primary

  Construction or manufacture · CPC title

• H05H1/2406 Primary

  using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes · CPC title

• Y02P70/50

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

• H05H1/47

  using corona discharges · CPC title

• H05H1/473

  Cylindrical electrodes, e.g. rotary drums · CPC title