KR-102962589-B1 - WELDING JIG CLEANING DEVICE

KR102962589B1KR 102962589 B1KR102962589 B1KR 102962589B1KR-102962589-B1

Abstract

The present disclosure provides a welding jig cleaning device comprising, as one embodiment, a jig holder on which a plurality of welding jigs are arranged; a blast nozzle disposed on the jig holder and cleaning the plurality of welding jigs; and a controller for controlling the blast nozzle, wherein the blast nozzle moves on the jig holder in a first direction in which the plurality of welding jigs are spaced apart from each other, thereby cleaning each of the plurality of welding jigs on each of the plurality of welding jigs.

Inventors

이원구

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260507
Application Date: 20211020

Claims (9)

A jig holder on which multiple welding jigs are arranged; A blast nozzle disposed on the jig holder and cleaning the plurality of welding jigs; and A controller for controlling the above-mentioned blast nozzle; comprising, The blast nozzle moves in a first direction, which is a direction in which the plurality of welding jigs are spaced apart from each other on the jig holder, to clean each of the plurality of welding jigs on each of the plurality of welding jigs. Welding jig cleaning device.
In paragraph 1, The controller is capable of controlling the cleaning time of each of the plurality of welding jigs of the blast nozzle to be the same or different from each other. Welding jig cleaning device.
In paragraph 2, Each of the above plurality of welding jigs is placed at each specific position of the jig holder, and The controller can control the cleaning times of each of the plurality of welding jigs by the blast nozzle to be the same or different from each other by setting each time for the blast nozzle to clean a welding jig on each of the specific positions of the jig holder. Welding jig cleaning device.
In paragraph 1, The controller is controllable so that the blast nozzle skips cleaning some of the plurality of welding jigs, Welding jig cleaning device.
In paragraph 1, The above blast nozzle includes a nozzle that sprays sand and compressed air, Welding jig cleaning device.
In paragraph 5, A suction port further comprising a suction port for sucking in sand sprayed from the above nozzle and foreign matter detached from the above welding jig, Welding jig cleaning device.
In paragraph 1, The above jig holder includes a magnetic part for fixing the plurality of welding jigs. Welding jig cleaning device.
In paragraph 1, The blast nozzle is capable of moving in a second direction, which is a direction perpendicular to the first direction and the plane. Welding jig cleaning device.
In paragraph 8, The blast nozzle moves in the second direction to clean one of the plurality of welding jigs, moves in the first direction to be positioned on another of the plurality of welding jigs, and then moves in the second direction to clean another of the plurality of welding jigs. Welding jig cleaning device.

Description

Welding Jig Cleaning Device The present disclosure relates to a welding jig cleaning device. With the technological development and increasing demand for mobile devices, rechargeable secondary batteries are being widely used as an energy source for various mobile devices. Furthermore, secondary batteries are also attracting attention as an energy source for electric vehicles and hybrid vehicles, which are being proposed as solutions to address issues such as air pollution caused by conventional gasoline and diesel vehicles. Secondary batteries are classified into coin batteries, cylindrical batteries, prismatic batteries, and pouch batteries according to the shape of the battery case. Generally, the electrode assembly embedded in the battery case is classified into a jelly-roll type wound with a separator interposed between the positive and negative electrodes, a stack type stacked with multiple unit cells interposed between the positive and negative electrodes, and a stack/folding type wound with unit cells wrapped in a separator film. The electrode tab protruding from the electrode assembly of a secondary battery is connected to the electrode lead through laser welding, ultrasonic welding, etc. At this time, the electrode tab and electrode lead are generally placed on a welding jig and welding is performed; however, there is a problem in that foreign substances such as spatter generated during welding adhere to the welding jig, degrading the welding quality. Therefore, it is necessary to perform cleaning to remove foreign substances from the welding jig. FIG. 1 is a schematic cross-sectional view showing the state in which an electrode tab and an electrode lead are fixed by a welding jig used in one embodiment of the present invention. FIG. 2 is a schematic plan view of a welding jig used in one embodiment of the present invention. FIG. 3 is a schematic side view of a welding jig cleaning device according to one embodiment of the present invention. FIG. 4 is a schematic plan view of a jig holder according to one embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of a blast nozzle according to one embodiment of the present invention. Embodiments of the present invention will be described in detail below with reference to the attached drawings. For convenience of explanation, all or part of the components in the drawings may be exaggerated. Furthermore, the present invention is not limited to the contents described in the attached drawings or this specification, and it will be obvious to those skilled in the art that the present invention can be implemented in various forms within the scope of the technical spirit of the invention. FIG. 1 is a schematic cross-sectional view showing the state in which an electrode tab and an electrode lead are fixed by a welding jig used in one embodiment of the present invention. The electrode tab (12) and electrode lead (13) of the electrode assembly (11) can be joined through laser welding or the like. When laser welding, the electrode tab (12) and electrode lead (13) of the electrode assembly (11) can be fixed by a welding jig (20), specifically, they can be fixed by being placed between a first welding jig (21) and a second welding jig (22), which are a plurality of welding jigs (20), and pressed. One of the first welding jig (21) and the second welding jig (22) is placed on the electrode tab (12) and the other is placed on the electrode lead (13), so that the first welding jig (21) and the second welding jig (22) can fix the electrode tab (12) and the electrode lead (13) by pressing them from both sides. For example, the first welding jig (21) can be placed on the electrode lead (13), and the second welding jig (22) can be placed on the electrode tab (12). The welding jig (20) may have a hole (h) formed in an area where a laser is irradiated during laser welding. The hole (h) may be a structure that penetrates between one side of the welding jig (20) and the other side. Meanwhile, foreign substances such as spatter may be generated during the laser welding process. If such foreign substances adhere to the welding jig (20), there may be a problem that degrades the welding quality of the electrode tab (12) and electrode lead (13). Therefore, it is necessary to perform cleaning to remove foreign substances from the welding jig (20). In particular, a large amount of spatter may adhere around the hole (h) of the welding jig (20). FIG. 2 is a schematic plan view of a welding jig used in one embodiment of the present invention. Referring to the drawing, the first welding jig (21) and the second welding jig (22) that press the electrode tab (12) and the electrode lead (13) may be of different shapes. At least one of the first welding jig (21) and the second welding jig (22) may be composed of multiple welding jigs. For example, as shown in the drawing, the first welding jig (21) may include a first-1 welding jig (21A) and a first-2 welding jig (21B