CN-121988784-A - Electrode plate cutter and apparatus for manufacturing secondary battery

CN121988784ACN 121988784 ACN121988784 ACN 121988784ACN-121988784-A

Abstract

The present disclosure provides an electrode plate cutting machine and apparatus for manufacturing a secondary battery, which can prevent foreign substances or cracks from occurring in a mixing portion when an electrode plate is cut, and prevent active substances from being transferred to a separator. The electrode plate cutter includes an upper cutter installed above the conveying path of the electrode plate conveyed along the conveying path, a lower cutter installed below the conveying path to cut the electrode plate, and a stripper installed on a side portion of the lower cutter to upwardly support the electrode plate toward the upper cutter when the electrode plate is cut, wherein the stripper includes a body providing a supporting force and a supporter supported by the body and having a relatively low hardness compared to the upper cutter, the lower cutter, and the body.

Inventors

Quan Junhuan
JIN ZHENHUAN
Lin Zhongmen
JIANG FENGXIN

Assignees

三星SDI株式会社

Dates

Publication Date: 20260508
Application Date: 20250718
Priority Date: 20241106

Claims (12)

1. An electrode plate cutting machine for manufacturing a secondary battery, comprising: An upper cutter installed above the conveying path of the electrode plate conveyed along the conveying path; A lower cutter installed below the conveying path to cut the electrode plate, and A stripper installed on a side portion of the lower cutter to upwardly support the electrode plate toward the upper cutter when the electrode plate is cut, Wherein the stripper comprises: a main body for providing a supporting force, and A support supported by the main body and having a low hardness compared to the upper cutter, the lower cutter, and the main body.
2. The electrode plate cutting machine according to claim 1, wherein the support is a polymer body made of a molded polymer.
3. The electrode plate cutting machine according to claim 2, wherein the polymer body has a plate shape and a multi-layered structure on an upper portion of the main body, and an uppermost polymer body is in contact with a lower surface of the electrode plate when the electrode plate is cut.
4. The electrode plate cutter according to claim 2, wherein an inclined surface inclined downward toward the lower cutter is formed on an upper portion of the main body, and The polymer body is fixed to the inclined surface, and has a shape in which a thickness increases from a side opposite to the lower cutter.
5. The electrode plate cutting machine according to claim 4, wherein the polymer body has a multi-layered structure, and an uppermost polymer body is in contact with a lower surface of the electrode plate when the electrode plate is cut.
6. The electrode plate cutter according to claim 2, wherein the polymer body is fixedly stacked on an upper portion of the main body, and a cover plate is provided on the polymer body, the cover plate being configured to receive a pressing force transmitted from the upper cutter when the electrode plate is cut and transmit the pressing force to the polymer body.
7. The electrode plate cutting machine according to claim 2, wherein a side groove opened upward and laterally is formed in a side portion of the main body facing the lower cutter, The support block is mounted in the side groove, and The polymer body contacts both the main body and the support block, and transmits downward a pressing force transmitted from the upper cutter when the electrode plate is cut.
8. The electrode plate cutter according to claim 2, wherein a side groove opened upward and laterally is formed in a side portion of the main body facing the lower cutter, and The polymer body receives a pressing force transmitted from the upper cutter when the electrode plate is cut when installed in the side groove.
9. The electrode plate cutter according to claim 2, wherein a side groove opened upward and laterally is formed in a side portion of the main body facing the lower cutter, and The polymer body has a plate shape, and a portion of the polymer body is suspended above the side groove when fixed to the upper portion of the main body.
10. The electrode plate cutter according to claim 2, wherein a mounting groove is formed in a side portion of the main body facing the lower cutter, and The polymer body receives a pressing force transmitted from the upper cutter when the electrode plate is cut, when coupled to and supported by the mounting groove of the side portion of the main body.
11. The electrode plate cutter of claim 2, wherein the polymer body surrounds an upper portion and a side portion of the body.
12. An apparatus for manufacturing a secondary battery, comprising: A conveying unit configured to convey an electrode plate to be cut along a conveying path; a winding unit configured to receive and wind the electrode plate conveyed by the conveying unit, and The electrode plate cutting machine according to any one of claims 1 to 11.

Description

Electrode plate cutter and apparatus for manufacturing secondary battery Technical Field The present disclosure relates to cutting of an electrode plate of a secondary battery, and more particularly, to an electrode plate cutter for manufacturing a secondary battery and an apparatus for manufacturing a secondary battery including the same. Background Unlike a primary battery that cannot be recharged, a secondary battery is a battery that can be charged and discharged. The secondary battery may generally include an electrode assembly (including a positive electrode plate, a separator, and a negative electrode plate), a case (or can) for accommodating the electrode assembly, a substrate tab formed by extending an uncoated portion of each electrode plate of the electrode assembly, an external terminal connected to the substrate tab, and the like. The information disclosed in this background section is for enhancement of understanding of the background of the disclosure and, therefore, it may contain information that does not form a related (or prior) art. Disclosure of Invention The present disclosure is directed to providing an electrode plate cutting machine for manufacturing a secondary battery and an apparatus for manufacturing a secondary battery, which can prevent foreign substances or cracks from occurring in a mixing portion when an electrode plate is cut, and prevent active materials from being transferred to a separator. According to an aspect of the present disclosure, there is provided an electrode plate cutter for manufacturing a secondary battery, including an upper cutter mounted above a conveying path of an electrode plate conveyed along the conveying path, a lower cutter mounted below the conveying path to cut the electrode plate, and a stripper mounted on a side portion of the lower cutter to upwardly support the electrode plate toward the upper cutter when the electrode plate is cut, wherein the stripper includes a main body providing a supporting force and a support supported by the main body and having a relatively low hardness compared to the upper cutter, the lower cutter, and the main body. According to another aspect of the present disclosure, there is provided an apparatus for manufacturing a secondary battery, including a conveying unit configured to convey an electrode plate to be cut along a conveying path, a winding unit configured to receive and wind the electrode plate conveyed by the conveying unit, and an electrode plate cutter having an upper cutter mounted above the conveying path of the electrode plate, a lower cutter mounted below the conveying path of the electrode plate to cut the electrode plate, a main body mounted on a side portion of the lower cutter to upwardly support the electrode plate toward the upper cutter and provide a supporting force when the electrode plate is cut, and a support supported by the main body and having a relatively low hardness compared to the upper cutter, the lower cutter, and the main body. Aspects and features of the present disclosure are not limited to those described herein, and other aspects and features not specifically mentioned herein will be clearly understood by those skilled in the art from the description of the present disclosure herein. Drawings The present disclosure, together with other objects, features and advantages thereof, will become more readily apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which: Fig. 1 is a schematic view illustrating an electrode assembly of a secondary battery that may be manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 2 is a view illustrating the inside of a pouch-type battery to which the electrode assembly of fig. 1 is applied; Fig. 3 is a sectional view illustrating a cylindrical battery that may be manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; fig. 4 is a perspective view illustrating an external appearance of a prismatic battery that may be manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4; fig. 6 is a view illustrating a basic configuration of an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 7 is a configuration diagram illustrating a modified example of the apparatus for manufacturing a secondary battery shown in fig. 6; Fig. 8 is a view illustrating another example of an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 9 is a view illustrating a modified example of the apparatus for manufacturing a secondary battery shown in fig. 8; Fig. 10 is a view illustrating another modified example