Apparatus for Compressing Joint of Electrode Tab and Electrode Lead

Patent metadata

Field	Value
Publication number	US-2024316891-A1
Application number	US-202218578122-A
Country	US
Kind code	A1
Filing date	Dec 23, 2022
Priority date	Dec 27, 2021
Publication date	Sep 26, 2024
Grant date	—

Abstract

An apparatus for compressing a joint between an electrode tab extending from an electrode assembly and electrode lead includes an upper pressing unit, a lower pressing unit, a suction unit, and a driving unit for moving the upper and lower pressing units up and down. The apparatus includes an air injection nozzle that injects air obliquely from an exterior region of an upper compressing member toward the joining surface of the electrode tab and electrode lead.

First claim

1 . An apparatus for compressing a joint formed between an electrode tab extending from an electrode assembly and an electrode lead, the apparatus comprising:
an upper pressing unit; a lower pressing unit; a driving unit configured to move the upper pressing unit and the lower pressing unit up and down; and a suction unit, wherein the upper pressing unit comprises an upper compressing member protruding toward the lower pressing unit and an upper support member in which the upper compressing member is fixed to a lower portion of the upper support member, and the lower pressing unit comprises a lower compressing member protruding toward the upper pressing unit and a lower support member in which the lower compressing member is fixed to an upper portion of the lower support member, wherein the upper compressing member and the lower compressing member are located in opposite directions on the same line, and are moved to a compressed position by driving the upper support member and the lower support member toward each other, and are separated by driving the upper support member and the lower support member in opposite directions from each other, and the upper support member comprises an upper air injection nozzle configured to inject air toward the joint.

2 . The apparatus of claim 1 , wherein the upper air injection nozzle is configured to inject air in a direction forming an angle of 10° to 80° with respect to a surface of the joint.

3 . The apparatus of claim 1 , wherein the upper air injection nozzle is configured not to operate when the upper and lower compression members are in the compressed position and to operate when the upper and lower compressing members are in a non-compressed position.

4 . The apparatus of claim 1 , wherein the upper air injection nozzle is configured to operate when the joint is positioned in a state where the upper compressing member is raised, not to operate from a time when the upper compressing member is lowered to a time when the upper compressing member is raised through a compression process, and to operate again when the joint is discharged after the compression process is completed.

5 . The apparatus of claim 1 , wherein the lower support member further includes a lower air injection nozzle configured to inject air toward the joint.

6 . The apparatus of claim 5 , wherein the lower air injection nozzle is configured to inject air in a direction forming an angle of 10° to 80° with a surface of the joint.

7 . The apparatus of claim 5 , wherein the lower air injection nozzle is configured not to operate when the upper and lower compression members are in the compressed position, and to operate when the upper and lower compressing members are in a non-compressed position.

8 . The apparatus of claim 5 , wherein the lower air injection nozzle is configured to operate when the lower compressing member is lowered, not to operate from a time when the lower compressing member is raised to a time when the lower compressing member is lowered through a compression process, and to operate again when the joint is discharged after a compression process is completed.

9 . The apparatus of claim 1 , wherein the suction unit comprises a suction pipe and an inhaler connected to the suction pipe, wherein the suction pipe communicates with a space separated from the electrode assembly positioned between the upper and lower compression members.

10 . The apparatus of claim 1 , wherein the upper air injection nozzle is configured to inject air toward the joint at an oblique angle relative to a surface of the joint.

11 . The apparatus of claim 5 , wherein the lower air injection nozzle is configured to inject air toward the joint at an oblique angle relative to a surface of the joint.

Assignees

• Lg Energy Solution Ltd

Inventors

• Ahn Heejun
• Seo Sangkee

Classifications

• H01M10/0481

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/0404

  Machines for assembling batteries · CPC title

• H01M50/536

  characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title

• H01M50/54 Primary

  Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges · CPC title