Lamination device

Patent metadata

Field	Value
Publication number	US-10608285-B2
Application number	US-201716092717-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Nov 4, 2016
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A lamination device of the present invention includes a pattern roller part embodying a pattern on an electrode assembly, wherein the pattern roller part includes a rotation roller disposed on a surface of the electrode assembly to emit heat and a pattern cover wound around an outer circumferential surface of the rotation roller and partially pressing the surface of the electrode assembly together with the heat transferred from the rotation roller to embody a pattern, and the pattern cover includes a pattern film wound around the outer circumferential surface of the rotation roller and a deformation member disposed on an inner surface of the pattern film to wind the pattern film around the outer circumferential surface of the rotation roller while being deformed by the heat transferred from the rotation roller.

First claim

The invention claimed is:

1. A lamination device comprising:
a pattern roller part configured to impart a pattern on an electrode assembly,
wherein the pattern roller part comprises a rotation roller disposed on a surface of the electrode assembly to emit heat and a pattern cover wound around an outer circumferential surface of the rotation roller and partially pressing the surface of the electrode assembly together with the heat transferred from the rotation roller to impart the pattern, and
wherein the pattern cover comprises a pattern film wound around the outer circumferential surface of the rotation roller and a deformation member disposed on an inner surface of the pattern film to wind the pattern film around the outer circumferential surface of the rotation roller while being deformed by the heat transferred from the rotation roller.

2. The lamination device of claim 1 , wherein the deformation member is inserted in an opening groove defined in the inner surface of the pattern film in a longitudinal direction of the pattern film.

3. The lamination device of claim 1 , wherein the pattern film comprises an outer film and an inner film disposed on an inner surface of the outer film and having a width less than a width of the outer film, and
wherein the deformation member is disposed in each of one or more opening grooves defined between a corresponding side portion of the inner film and the inner surface of the outer film in a longitudinal direction of the pattern film.

4. The lamination device of claim 3 , wherein the outer film and the inner film are thermally fused to be integrated with each other.

5. The lamination device of claim 3 , wherein the outer film has a greater strength than a strength of the inner film.

6. The lamination device of claim 3 , wherein opposite ends of the pattern film, which are wound around the outer circumferential surface of the rotation roller, are closely attached to each other without generating a gap therebetween.

7. The lamination device of claim 1 , wherein one or more pattern covers are provided in a longitudinal direction of the rotation roller.

8. The lamination device of claim 1 , wherein the deformation member is made of a shape-memory alloy material.

9. The lamination device of claim 1 , wherein the rotation roller has a support groove along the outer circumferential surface of the rotation roller, and
the pattern cover is wound around the outer circumferential surface of the rotation roller along the support groove.

10. The lamination device of claim 9 , wherein the support groove has a depth less than a thickness of the pattern cover.

11. The lamination device of claim 1 , wherein the pattern roller part is provided in plurality to correspond to each of a top surface and a bottom surface of the electrode assembly.

12. The lamination device of claim 1 , wherein the rotation roller is at a temperature of 40° C. to 80° C. to emit the heat.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Dong Hyun
• Kim Kyung Taek
• Koo Sang Hyun

Classifications

• H01M4/0433

  Molding · CPC title

• H01M10/04

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title

• H01M4/0435

  Rolling or calendering · CPC title

• H01M10/0585 Primary

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• B32B37/0053 Primary

  Constructional details of laminating machines comprising rollers; Constructional features of the rollers · CPC title