Welding horn for secondary battery

Patent metadata

Field	Value
Publication number	US-9259799-B2
Application number	US-201414226376-A
Country	US
Kind code	B2
Filing date	Mar 26, 2014
Priority date	Apr 4, 2013
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A welding horn for a secondary battery, used in ultrasonic welding includes a body portion having coupling portions respectively provided at one and the other ends thereof; and a tip portion provided at a central portion of the body portion and having protruding portions provided on a surface thereof. In the welding horn, a nitride is coated on at least one surface of the welding horn.

First claim

What is claimed is:

1. A welding horn for a secondary battery, configured for use in ultrasonic welding, the welding horn comprising:
a body portion having coupling portions respectively provided at one and the other ends thereof; and
two tip portions provided at a central portion of the body portion and having protruding portions provided on a surface thereof,
wherein a nitride is coated on at least one surface of the welding horn,
each of the protruding portions protrudes in the shape of a triangular pyramid of which the base side mounted on the surface of the tip portion is quadrangular,
wherein the body portion has two flat surfaces extended in a first direction, and the first direction is a direction extended from the one end to the other end of the body portion;
wherein the two flat surfaces are on opposite sides of the body portion;
wherein the tip portions protrude from the flat surfaces, and extend in a second direction perpendicular to the first direction so as to traverse the flat surface;
wherein the tip portions protrude from the flat surface and have rod shapes which each contact one of the flat surfaces from an upper end portion to a lower end portion of the flat surface; and
wherein the tip portions protrude from the flat surfaces so as to have a height lower than the one end and the other end of the body portion.

2. The welding horn of claim 1 , wherein the nitride is coated on the tip portion.

3. The welding horn of claim 1 , wherein the nitride includes TiN.

4. The welding horn of claim 1 , wherein the nitride is coated to have a thickness of about 2 to 3 μm.

5. The welding horn of claim 1 , wherein the welding horn is configured for use in welding an electrode tab to a surface of a positive or negative electrode plate.

6. The welding horn of claim 1 ,
wherein the flat surface is provided in a pair opposite to each other, and the tip portion is provided in a pair to both of the pair of flat surfaces, and
wherein the tip portions are provided at positions corresponding to each other.

7. The welding horn of claim 1 , wherein the protruding portion is provided to protrude from a first surface of the tip portion, and the first surface is a surface parallel with the flat surface.

8. The welding horn of claim 7 , wherein the base side of the protruding portion is mounted on the first surface of the tip portion.

9. The welding horn of claim 1 , wherein the coupling portion is a portion coupled to an external device, and includes cylindrical support portions respectively provided at the one and the other ends of the body portion, and a fastening projection protruded outward from the support portion and having a screw thread on a surface thereof.

10. A method of ultrasonic welding comprising:
using a welding horn to weld two or more objects together;
wherein the welding horn comprises:
a body portion having coupling portions respectively provided at one and the other ends thereof; and
two tip portions provided at a central portion of the body portion and having protruding portions provided on a surface thereof,
wherein a nitride is coated on at least one surface of the welding horn,
each of the protruding portions protrudes in the shape of a triangular pyramid of which the base side mounted on the surface of the tip portion is quadrangular,
wherein the body portion has two flat surfaces extended in a first direction, and the first direction is a direction extended from the one end to the other end of the body portion;
wherein the two flat surfaces are on opposite sides of the body portion;
wherein the tip portions protrude from the flat surfaces, and extend in a second direction perpendicular to the first direction so as to traverse the flat surface;
wherein the tip portions protrude from the flat surface and have rod shapes which each contact one of the flat surfaces from an upper end portion to a lower end portion of the flat surface; and
wherein the tip portions protrude from the flat surfaces so as to have a height lower than the one end and the other end of the body portion.

11. The method of claim 10 , wherein the nitride is coated on the tip portion.

12. The method of claim 10 , wherein the nitride includes TiN.

13. The method of claim 10 , wherein the nitride is coated to have a thickness of about 2 to 3 μm.

14. The method of claim 10 , wherein the two objects to be welded comprise an electrode tab and a surface of a positive or negative electrode plate.

Assignees

• Samsung Sdi Co Ltd
• Samsung Sdi Co Ltd

Inventors

• Kim Hyun-Jun
• Min Dong-Bin
• Lim Chea-Hyun

Classifications

• H01M10/058

  Construction or manufacture · CPC title

• B23K2101/38

  Conductors · CPC title

• B23K1/06

  making use of vibrations, e.g. supersonic vibrations · CPC title

• H01M10/052

  Li-accumulators · CPC title

• B23K20/106 Primary

  Features related to sonotrodes · CPC title