KR-20260066300-A - PUNCHING DEVICE AND PUNCHING METHOD OF PART OF THE BATTERY CELL

KR20260066300AKR 20260066300 AKR20260066300 AKR 20260066300AKR-20260066300-A

Abstract

A punching device according to an embodiment of the present disclosure may include: a motor including a motor shaft; a crank configured to be coupled with the motor and convert the rotational motion of the motor into reciprocating motion; a punch device configured to be pushed toward a component of a battery cell by the reciprocating motion of the crank; a shaft extending along the direction of the reciprocating motion of the crank; a support into which the shaft is inserted and configured to move along the direction of extension of the shaft; and a roller configured to move together with the support and configured to roll along the surface of the shaft.

Inventors

강승인

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (15)

Motor including a motor shaft; A crank configured to be coupled with the motor to convert the rotational motion of the motor into reciprocating motion; A punch part configured to be pushed toward a battery cell component by the reciprocating motion of the above crank; A shaft extended along the direction of reciprocating motion of the crank; A support into which the shaft is inserted and configured to move along the extension direction of the shaft; and A punching device comprising a roller configured to move together with the support and configured to roll along the surface of the shaft.
In Article 1, The above roller is, A punching device comprising an outer surface that is in line contact with the surface of the shaft.
In Article 1, A punching device in which the central axis of the cylindrical roller is perpendicular to the extension direction of the shaft.
In Article 1, A punching device comprising the above roller and further comprising a roller assembly configured to be movable together with the above support.
In Paragraph 4, The above roller assembly is, A roller housing having a first hole into which at least a portion of the roller is inserted; and A perforating device comprising a cover that covers the roller by combining with the roller housing, and includes a second hole formed at a position corresponding to the first hole, which exposes another at least part of the roller.
In Paragraph 4, At least a portion of the above roller assembly is a perforating device fixed inside the support.
In Article 1, The above roller is, A punching device comprising a plurality of rollers spaced apart from each other along the extension direction of the shaft.
In Article 7, A punching device in which some of the plurality of rollers are located inside the support and the remainder of the plurality of rollers are located outside the support.
In Article 1, The shaft is a polyhedron comprising a plurality of sides, and the rollers are a plurality of perforating devices arranged corresponding to each of the plurality of sides.
In Article 1, It further includes a carrier configured to move together with the support and configured to push out the punch part, The above support is, A body surrounding the shaft; and A perforating device comprising a protruding portion that protrudes outward from the body and on which the carrier is seated.
The stage where the motor shaft of the motor rotates; A step in which a crank coupled to the above motor shaft reciprocates; A step in which a support moving together with the crank moves along a shaft; A step in which a roller moving together with the support rolls along the surface of the shaft; A step in which the reciprocating crank pushes out a punch part; and A method for punching a battery cell component, comprising the step of punching a battery cell component by the above-mentioned punch component.
In Article 11, The above roller is, A method for punching a battery cell component including an outer surface that is in line contact with the surface of the shaft.
In Article 11, A method for punching a battery cell component in which the central axis of the cylindrical roller is perpendicular to the extension direction of the shaft.
In Article 13, The above-mentioned cylindrical roller, A method for punching a battery cell component configured to rotate clockwise or counterclockwise around the central axis according to the reciprocating motion of the crank.
In Article 11, The above roller is, A method for punching a battery cell component configured to roll between the support and the shaft.

Description

Punching Device and Punching Method of Part of Battery Cell Various embodiments of the present disclosure relate to a punching device and a method for punching battery cell components. Rechargeable batteries are widely used in portable mobile devices such as digital cameras, mobile phones, and laptops due to their rechargeable and dischargeable capabilities. In particular, with the rapid development of the electrical, electronic, telecommunications, and computer industries in recent years, the demand for high-performance and high-stability rechargeable batteries is increasing even further. Generally, depending on the structure of the electrode assembly, the secondary battery may include a jelly-roll electrode assembly in which long sheet-type positive and negative electrodes are wound with a separator in between, a stack-type electrode assembly in which a plurality of positive and negative electrodes cut into units of a predetermined size are sequentially stacked with a separator in between, and a stack/folding-type electrode assembly in which bicells or full cells in which positive and negative electrodes of a predetermined unit are stacked with a separator in between are wound. In addition, depending on the shape of the battery case, the secondary battery may be composed of a cylindrical secondary battery in which the electrode assembly is embedded in a cylindrical metal can, a prismatic secondary battery in which the electrode assembly is embedded in a prismatic metal can, a pouch-type secondary battery in which the electrode assembly is embedded in a pouch-type case made of an aluminum laminate sheet, etc. Meanwhile, the cylindrical secondary battery includes an insulator that surrounds at least a portion of the electrode assembly. The insulator is placed inside the can of the cylindrical secondary battery and is perforated at least a portion thereof. A perforation device for perforating a cylindrical secondary battery insulator includes a shaft and a crank that reciprocates along the shaft. The perforation device includes a support that moves along the shaft together with the crank. As the support reciprocates along the shaft, the function and lifespan of the perforation device may be degraded due to friction between the surface of the support and the surface of the shaft. FIG. 1 is a conceptual diagram of a battery cell according to an embodiment of the present disclosure. FIG. 2 is a drawing of a perforating device according to an embodiment of the present disclosure. FIG. 3 is a cross-sectional view of a part of a perforating device according to an embodiment of the present disclosure. FIG. 4 is a drawing illustrating the operation of a perforating device according to an embodiment of the present disclosure. FIG. 5 is a drawing of a part of a perforating device according to an embodiment of the present disclosure. FIG. 6 is an exploded view of a part of a perforating device according to an embodiment of the present disclosure. FIG. 7 is an exploded view of a part of a perforating device according to an embodiment of the present disclosure. FIG. 8 is a cross-sectional view of a part of a perforating device according to an embodiment of the present disclosure. Prior to the detailed description of the present invention, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, they should be interpreted in a sense and concept consistent with the technical spirit of the present invention, based on the principle that the inventor may appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all aspects of the technical spirit of the present invention. Therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. Identical reference numbers or symbols in each drawing attached to this specification represent parts or components that perform substantially the same function. For convenience of explanation and understanding, the same reference numbers or symbols may be used to describe different embodiments. That is, even if components having the same reference number are depicted in multiple drawings, the multiple drawings do not all represent a single embodiment. In the following description, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms such as "comprising" or "constituting" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, compone