CN-121989311-A - Electrode plate cutting machine and apparatus for manufacturing secondary battery

CN121989311ACN 121989311 ACN121989311 ACN 121989311ACN-121989311-A

Abstract

The present disclosure relates to an electrode plate cutting machine and an apparatus for manufacturing a secondary battery. The present disclosure relates to suppressing movement of an electrode plate when the electrode plate is cut to prevent an active material from falling off from a substrate when the electrode plate is cut. The electrode plate cutting machine includes an upper cutting unit having an upper cutter installed above a conveying path of the electrode plate conveyed therealong and an upper stripper provided at a side portion of the upper cutter to press the electrode plate downward and support the electrode plate when the electrode plate is cut, and a lower cutting unit having a lower cutter installed below the upper cutting unit with the electrode plate interposed therebetween to cut the electrode plate by a cross motion with the upper cutter and a lower stripper located at a side portion of the lower cutter to support the electrode plate upward toward the upper cutter when the electrode plate is cut.

Inventors

Quan Junhuan
JIN ZHENHUAN
Lin Zhongmen
JIANG FENGXIN

Assignees

三星SDI株式会社

Dates

Publication Date: 20260508
Application Date: 20250710
Priority Date: 20241106

Claims (11)

1. An electrode plate cutting machine, comprising: An upper cutting unit having: an upper cutter installed above a conveying path of the electrode plate conveyed therealong, and An upper stripper provided at a side portion of the upper cutter to press down and support the electrode plate when the electrode plate is cut, and A lower cutting unit having: A lower cutter interposed between the lower cutter and the upper cutting unit to cut the electrode plate by a cross motion with the upper cutter, and And a lower stripper located at a side portion of the lower cutter to support the electrode plate upward toward the upper cutter when the electrode plate is cut.
2. The electrode plate cutting machine according to claim 1, wherein the upper cutting unit further comprises: A supporting body for fixing the upper cutter, and An elastic support provided on the support body for elastically supporting the upper stripper downward.
3. The electrode plate cutting machine according to claim 1, wherein the lower cutting unit further comprises: a support body supporting the lower cutter, and And an elastic support member installed on the support body for elastically supporting the lower stripper upward.
4. The electrode plate cutting machine according to claim 3, wherein the lower cutting unit further comprises a stripper guide mounted on the support body for supporting the lower stripper to prevent the lower stripper from being laterally moved when the electrode plate is cut.
5. The electrode plate cutter of claim 3, wherein the lower cutter is insert coupled to the support body and is replaceable.
6. The electrode plate cutting machine according to claim 1, wherein a horizontal surface portion for contacting the electrode plate surface when the electrode plate is cut is formed on an upper surface of the lower cutter.
7. The electrode plate cutter of claim 1 wherein the lower cutter comprises a lower cutter body and a blade tip coupled to the lower cutter body to apply shear force to the electrode plate.
8. The electrode plate cutting machine according to claim 1 or 3 or 4, wherein a friction plate for contacting a lower surface of the electrode plate is mounted on an upper surface of the lower stripper.
9. The electrode plate cutting machine according to claim 2, wherein the upper cutting unit further comprises a stripper guide provided on the support body for supporting the upper stripper to prevent the upper stripper from being laterally moved when the electrode plate is cut.
10. The electrode plate cutting machine according to claim 1 or 2 or 9, wherein a friction plate for contacting an upper surface of the electrode plate is mounted on a lower surface of the upper stripper.
11. An apparatus for manufacturing a secondary battery, comprising: a plurality of conveying rollers configured to convey an electrode plate as a processing object along a conveying path; A winding roller configured to wind the electrode plate passing through the transfer roller; a motor configured to rotate the winding roller; The electrode plate cutter according to any one of claims 1 to 10, and And a driving unit configured to move the upper cutting unit upward and downward.

Description

Electrode plate cutting machine and apparatus for manufacturing secondary battery Technical Field The present disclosure relates to an electrode plate cutting machine for cutting an electrode plate (or an electrode plate cutting machine for cutting an electrode plate during a process of manufacturing a secondary battery) and an apparatus for manufacturing a secondary battery (or a secondary battery manufacturing apparatus). Background Unlike primary batteries, which cannot be recharged, secondary batteries are rechargeable and dischargeable batteries. In general, a secondary battery includes an electrode assembly including positive and negative electrode plates (hereinafter, referred to as "electrode plates") and a separator. The electrode plate may be manufactured by coating, rolling, slitting and die cutting processes. The electrode plate cutter may be used during a process of manufacturing the electrode plate. The electrode plate cutter includes upper and lower cutters mounted on upper and lower portions of the electrode plate conveyed along the conveying path, respectively. The upper cutter and the lower cutter cut the electrode plate positioned between the upper cutter and the lower cutter by a cross motion. However, the conventional electrode plate cutting machine has a problem in that the electrode plate moves slightly while cutting the electrode plate. The reason for the movement of the electrode plate is that there is no separate supporting mechanism for supporting the electrode plate while cutting. In addition, when the electrode plate is cut, the movement of the electrode plate causes the active material to be detached from the electrode plate substrate. Accordingly, the conventional electrode plate cutting machine additionally requires a suction device for removing impurities, an impurity collecting process, and the like. The information disclosed herein in this background section is for enhancement of understanding of the background of the disclosure and, therefore, it may contain information that does not constitute pertinent (or prior art). Disclosure of Invention The present disclosure is directed to providing an electrode plate cutting machine and an apparatus for manufacturing a secondary battery (or secondary battery manufacturing apparatus) having the same, in which an active material is prevented from falling off a substrate while cutting by inhibiting movement of an electrode plate when the electrode plate is cut. According to an aspect of the present disclosure, there is provided an electrode plate cutter including an upper cutter having an upper cutter mounted above a conveying path of an electrode plate conveyed therealong and an upper stripper disposed at a side portion of the upper cutter to press the electrode plate downward and support the electrode plate when the electrode plate is cut, and a lower cutter having a lower cutter mounted below the upper cutter and a lower stripper interposed between the lower cutter and the upper cutter to cut the electrode plate by a cross motion with the upper cutter and the lower stripper is located at a side portion of the lower cutter to support the electrode plate upward toward the upper cutter when the electrode plate is cut. According to another aspect of the present disclosure, there is provided an apparatus for manufacturing a secondary battery including a plurality of transfer rollers configured to transfer an electrode plate as a processing object along a transfer path, a winding roller configured to wind the electrode plate passing through the transfer rollers, a motor configured to rotate the winding roller, an electrode plate cutter including an upper cutter and a lower cutter, the upper cutter having an upper cutter and an upper stripper, the upper cutter being installed above the transfer path of the electrode plate transferred therealong, and the upper stripper being disposed at a side portion of the upper cutter to press the electrode plate downward and support the electrode plate when the electrode plate is cut, the lower cutter having a lower cutter and a lower stripper installed below the upper cutter, the electrode plate being interposed between the lower cutter and the upper cutter to cut the electrode plate by a cross motion with the upper cutter, and the lower stripper being located at a side portion of the lower cutter to support the electrode plate upward toward the upper cutter when the electrode plate is cut, and a driving unit configured to move the upper cutter upward and downward. 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 Other objects, features and advantages herein and of the present disclosure will become more readily apparent to those of ordinary skill in the art by describing in det