KR-20260062564-A - PRESS JIG AND WELDING DEVICE FOR ELECTRODE TAB

KR20260062564AKR 20260062564 AKR20260062564 AKR 20260062564AKR-20260062564-A

Abstract

The present invention relates to a pressing jig and an electrode tab welding device, and more specifically, comprises: a jig body configured to press an electrode tab of a battery cell; a through hole formed penetrating the jig body in a third direction (D3); and a foreign substance collection part disposed above the through hole inside the jig body; wherein the lower part of the through hole is configured to expose the electrode tab, and the foreign substance collection part may be configured to collect foreign substances emitted from the electrode tab through the through hole.

Inventors

김동현
정영석
남창현
최지예

Assignees

삼성에스디아이 주식회사

Dates

Publication Date: 20260507
Application Date: 20241029

Claims (20)

A jig body configured to press the electrode tab of a battery cell; A through hole formed by penetrating the above jig body in a third direction (D3); and It includes a foreign matter collection part positioned above the through hole inside the above jig body; and The lower part of the above through hole is configured to expose the electrode tab, and A pressing jig configured such that the above foreign substance collection part collects foreign substances emitted from the electrode tab through the above through hole.
In paragraph 1, The above foreign substance collection unit is, A recess formed by being recessed downwardly inside the above jig body, said recess is in communication with said through hole; and A pocket disposed on the inner surface of the above-mentioned recess; comprising A pressing jig in which the foreign substance introduced into the above-mentioned depression is collected in the above-mentioned pocket.
In paragraph 2, The above pocket is, A collection groove formed by being recessed downward on the above-mentioned recess; and A collection rib formed on the side of the above-mentioned collection groove, protruding upward; A pressing jig including
In paragraph 3, The above-mentioned depression is, A first surface portion defining one side of the above-mentioned depression; A second surface portion defining another side portion opposite to the first surface portion along the second direction (D2); and It includes a curved surface portion defining an inner surface between the first surface portion and the second surface portion; wherein the curved surface portion connects the first surface portion and the second surface portion, and A pressing jig in which, based on the second direction (D2) above, the through hole is arranged in a biased manner on the first surface within the interior of the recess.
In paragraph 4, The above pocket includes a plurality of pockets, and A pressing jig in which the plurality of pockets are arranged in a plurality of steps along the third direction (D3) on the inner surface of the recess.
In paragraph 5, The above plurality of pockets are, A first pocket positioned at the bottom of the inner surface of the above-mentioned depression; A third pocket positioned at the top of the inner surface of the above-mentioned depression; and A second pocket disposed between the first pocket and the third pocket on the inner surface of the above-mentioned recess; A pressing jig including
In paragraph 6, The first pocket is disposed on the first surface portion, and A pressing jig in which the first to third pockets are arranged on the second surface portion.
In Paragraph 7, A pressing jig in which, when viewed in a planar view, each of the plurality of pockets is formed in an elliptical shape.
In paragraph 6, Each of the above plurality of pockets is, A guide block positioned to protrude upward on the above-mentioned collection rib; Includes more, The above guide block is a pressing jig formed by tilting in the opposite direction of the above through hole.
In Paragraph 9, An upper guide is formed on the upper surface of the above guide block, which is inclined toward the direction of the collection groove. Pressing jig.
In paragraph 6, The above pocket is, A barrier block protruding in the direction of the collection groove from the above collection rib; and A pressing jig further comprising: a concave portion formed concavely in the lower part of the barrier block within the above-mentioned collection groove.
In paragraph 1, The above jig body is, A center body in which the above-mentioned through hole is formed; and A side body positioned on the side of the center body along the second direction (D2); A pressing jig including
In Paragraph 12, The above jig body is, It further includes a pressing block disposed at the lower part of the center body and protruding downward; The above-mentioned pressing block is a pressing jig configured to press the above-mentioned electrode tab.
In Paragraph 12, A magnetic member disposed on the above side body; A pressing jig that further includes
A lower chamber in which a fixing die configured to fix a battery cell is disposed; An upper chamber connected to a lifting member and moving up toward the lower chamber, and the upper chamber and the lower chamber combined to form a welding space; A jig detachable member disposed inside the upper chamber above; A welding member disposed inside the upper chamber above; A transfer unit disposed inside the upper chamber and moving the welding member along a first direction (D1); and A pressing jig disposed on the above-mentioned jig detachable member; comprising, The above pressing jig is, A jig body configured to press the electrode tab of the above battery cell; A through hole formed by penetrating the above jig body in a third direction (D3); and It includes a foreign matter collection part positioned above the through hole inside the above jig body; and The above welding member is configured to weld the electrode tab through the through hole, forming an electrode tab welding device.
In paragraph 15, The above electrode tab is exposed through the through hole, and The above foreign substance collection unit is configured to collect foreign substances falling onto the electrode tab through the through hole, and The above foreign substance collection unit is, A recess formed by being recessed downwardly inside the above jig body, said recess is in communication with said through hole; and A pocket disposed on the inner surface of the above-mentioned recess; comprising The above pocket includes a plurality of pockets, and The electrode tab welding device, wherein the plurality of pockets are arranged in a plurality of steps along the third direction (D3) on the inner surface of the recess.
In Paragraph 16, The above pocket is, A collection groove formed by being recessed downward on the above-mentioned recess; and A collection rib formed on the side of the above-mentioned collection groove, protruding upward; An electrode tab welding device including
In Paragraph 17, The above-mentioned depression is, A first surface portion defining one side of the above-mentioned depression; and A second surface portion defining an opposite side portion facing the first surface portion along the second direction (D2); It includes a curved surface portion defining an inner surface between the first surface portion and the second surface portion; wherein the curved surface portion connects the first surface portion and the second surface portion, and An electrode tab welding device in which, based on the second direction (D2) above, the through hole is arranged in a biased manner on the first surface within the interior of the recess.
In Paragraph 18, The above plurality of pockets are, A first pocket positioned at the bottom of the inner surface of the above-mentioned depression; A third pocket positioned at the top of the inner surface of the above-mentioned depression; and A second pocket disposed between the first pocket and the third pocket on the inner surface of the above-mentioned recess; The first pocket is disposed on the first surface portion, and An electrode tab welding device in which the first to third pockets are arranged on the second surface portion.
In Paragraph 18, A shielding gas injection unit connected to the upper chamber and spraying shielding gas into the welding space; and A suction unit connected to the upper chamber and suctioning foreign substances from the welding space; An electrode tab welding device further comprising

Description

Press Jig and Welding Device for Electrode Tab The present invention relates to a pressing jig and an electrode tab welding device, and more specifically, to a pressing jig and an electrode tab welding device capable of capturing foreign substances when welding an electrode tab of a battery cell, thereby blocking and mitigating the foreign substances from falling onto the welding area. Recently, accompanied by the rapid proliferation of battery-powered electronic devices such as mobile phones, laptop computers, and electric vehicles, the demand for high-energy-density, high-capacity rechargeable batteries is rapidly increasing. Accordingly, research and development to improve the performance of lithium-ion batteries is actively underway. Recently, all-solid-state batteries, in which liquid electrolytes are replaced with solid electrolytes, have been proposed. An all-solid-state battery is a battery formed by stacking a positive electrode, a solid electrolyte, and a negative electrode and then pressurizing and densifying them; it utilizes a solid electrolyte instead of the liquid electrolyte found in conventional rechargeable batteries. By not using flammable organic dispersion media, all-solid-state batteries can significantly reduce the likelihood of fire or explosion even in the event of a short circuit. Consequently, these all-solid-state batteries can possess high stability. Lithium-ion batteries, all-solid-state batteries, etc., can be manufactured by stacking multiple unit cells in multiple layers to increase energy density. In this case, multiple electrode tabs present in the battery cell can be joined together by laser welding. Foreign substances such as fumes and spatter may be generated during the welding process. If these foreign substances fall onto the welded area of the electrode tab, it may affect the welding quality of the electrode tab. FIG. 1 is a cross-sectional view of an all-solid-state battery cell (unit cell) according to embodiments of the present invention. FIG. 2 is a cross-sectional view of an all-solid-state battery cell (bicell) according to embodiments of the present invention. FIG. 3 is a drawing for explaining an all-solid-state battery cell (cell stack) according to embodiments of the present invention. FIG. 4a is a perspective view illustrating a pressing jig according to embodiments of the present invention. FIG. 4b is a perspective view illustrating a form including an opening in a pressing jig according to embodiments of the present invention. FIG. 5 is a front view illustrating a pressing jig according to embodiments of the present invention. FIG. 6 is a plan view illustrating a pressing jig according to embodiments of the present invention. FIG. 7a is a front view illustrating a magnetic member disposed in a jig body according to embodiments of the present invention. FIG. 7b is a plan view for explaining a magnetic member disposed in a jig body according to embodiments of the present invention. FIG. 8 is a side view illustrating a pressing jig according to embodiments of the present invention. FIG. 9 is a cross-sectional view for illustrating the AA' portion disclosed in FIG. 5. FIG. 10a is a cross-sectional view illustrating a guide block placed in a pressing jig according to embodiments of the present invention. FIG. 10b is a cross-sectional view illustrating a barrier block and a concave groove placed in a pressing jig according to embodiments of the present invention. FIGS. 11a and FIGS. 11b are drawings for explaining an electrode tab welding device according to embodiments of the present invention. FIG. 11c is a drawing for explaining the structure of the magnetic part of an electrode tab welding device according to embodiments of the present invention. FIG. 12 is a cross-sectional view for illustrating the BB' portion disclosed in FIG. 11b. In order to fully understand the structure and effects of the present invention, preferred embodiments of the present invention are described with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and various modifications can be made. The description of these embodiments is provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. In this specification, when a component is described as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. Additionally, in the drawings, the thicknesses of the components are exaggerated for the effective description of the technical content. Throughout the specification, parts indicated by the same reference numeral represent the same components. The embodiments described herein will be described with reference to cross-sectional and/or plan views, which are exemplary illustrations of the invent