EP-4738446-A1 - ELECTRODE DISCARDING DEVICE

EP4738446A1EP 4738446 A1EP4738446 A1EP 4738446A1EP-4738446-A1

Abstract

The technical idea of the present disclosure provides an electrode disposal apparatus including: a holder including a holding block configured to support a side portion of a bobbin on which an electrode sheet is wound and configured to rotate the bobbin such that the electrode sheet is unwound from the bobbin; a cutter configured to cut a portion of the electrode sheet unwound from the bobbin; and a disposal box accommodating segments of the electrode sheet cut by the cutter, wherein the holding block comprises: a rotation block; and a first connection blade extending in a first direction perpendicular to a rotation axis of the rotation block and inserted into a first insertion groove of the bobbin.

Inventors

PARK, MYUNG CHAN
SON, JAE HYOUNG
SHIN, SUNG JONG
KO, SEONG BEOM
LEE, CHAN YANG
HAM, Hyeong Joo

Assignees

LG Energy Solution, Ltd.

Dates

Publication Date: 20260506
Application Date: 20250626

Claims (11)

An electrode disposal apparatus, comprising: a holder comprising a holding block configured to support a side portion of a bobbin on which an electrode sheet is wound and configured to rotate the bobbin such that the electrode sheet is unwound from the bobbin; a cutter configured to cut a portion of the electrode sheet unwound from the bobbin; and a disposal box accommodating segments of the electrode sheet cut by the cutter, wherein the holding block comprises: a rotation block; and a first connection blade extending in a first direction perpendicular to a rotation axis of the rotation block and inserted into a first insertion groove of the bobbin.
The electrode disposal apparatus of claim 1, wherein the holding block further comprises: a second connection blade extending in a second direction perpendicular to the rotation axis of the rotation block and different from the first direction and inserted into a second insertion groove of the bobbin.
The electrode disposal apparatus of claim 1, wherein the holding block further comprises: a contact pad accommodated in a hole of the first connection blade and in contact with the bobbin.
The electrode disposal apparatus of claim 3, wherein the holder is configured to move the contact pad to adjust a height at which the contact pad protrudes from the first connection blade.
The electrode disposal apparatus of claim 3, wherein the contact pad comprises rubber.
The electrode disposal apparatus of claim 1, wherein the holder is configured to move the holding block between a working position and a standby position, wherein at the working position, the holding block supports the bobbin, and wherein at the standby position, the holding block is spaced apart from the bobbin.
The electrode disposal apparatus of claim 1, further comprising: a scale coupled to the disposal box and configured to detect a weight of the disposal box.
The electrode disposal apparatus of claim 7, further comprising a transfer device configured to move the disposal box and the scale.
The electrode disposal apparatus of claim 1, further comprising: a scale coupled to the disposal box and configured to detect a weight of the disposal box; and a transfer device configured to move the disposal box and the scale, wherein the transfer device is configured to move the disposal box and the scale to a disposal position when the weight of the disposal box detected by the scale exceeds a reference weight.
The electrode disposal apparatus of claim 1, further comprising a touch roll in contact with the electrode sheet wound on the bobbin.
The electrode disposal apparatus of claim 1, wherein the cutter comprises a support part supporting a portion of the electrode sheet unwound from the bobbin and a cutting knife configured to cut the electrode sheet while the support part supports the electrode sheet.

Description

[Technical Field] The present disclosure relates to an electrode disposal apparatus. This application claims the benefit of priority from Korean Patent Application No. 10-2024-0088109, filed on July 04, 2024, the entire contents disclosed therein are incorporated by reference into this disclosure. [Background] With the development of technology and increase in demand for mobile devices, the demand for secondary batteries is also rapidly increasing. Among them, lithium secondary batteries are widely used as energy sources for various mobile devices as well as various electronic products because they have high energy density and operating voltage and excellent storage and lifespan characteristics. Recently, as the application field for secondary batteries has expanded, demand for higher capacity secondary batteries is rapidly increasing. The process for manufacturing electrode of secondary batteries includes a coating process of manufacturing an electrode sheet by coating electrode active material on a current collector, a roll pressing process of pressing the electrode sheet, a slitting process and a notching process of cutting the electrode sheet into predetermined dimensions and shapes. At each individual process, a remainder of the electrode sheet is generated, and a disposal operation is performed to dispose of the remainder of the electrode sheet. [Summary] [Technical Problem] The technical problem to be solved by the present disclosure is to provide an electrode disposal apparatus. [Technical Solution] To solve the above-described problem, the technical idea of the present disclosure provides an electrode disposal apparatus comprising: a holder including a holding block configured to support a side portion of a bobbin on which an electrode sheet is wound and configured to rotate the bobbin such that the electrode sheet is unwound from the bobbin; a cutter configured to cut a portion of the electrode sheet unwound from the bobbin; and a disposal box accommodating segments of the electrode sheet cut by the cutter, wherein the holding block comprises: a rotation block; and a first connection blade extending in a first direction perpendicular to a rotation axis of the rotation block and inserted into a first insertion groove of the bobbin. In exemplary embodiments, the holding block further comprises a second connection blade extending in a second direction perpendicular to the rotation axis of the rotation block and different from the first direction and inserted into a second insertion groove of the bobbin. In exemplary embodiments, the holding block further comprises a contact pad accommodated in a hole of the first connection blade and in contact with the bobbin. In exemplary embodiments, the holder is configured to move the contact pad to adjust a height at which the contact pad protrudes from the first connection blade. In exemplary embodiments, the contact pad comprises rubber. In exemplary embodiments, the holder is configured to move the holding block between a working position and a standby position, wherein at the working position, the holding block supports the bobbin, and wherein at the standby position, the holding block is spaced apart from the bobbin. In exemplary embodiments, the electrode disposal apparatus further comprises a scale coupled to the disposal box and configured to detect a weight of the disposal box. In exemplary embodiments, the electrode disposal apparatus further comprises a transfer device configured to move the disposal box and the scale. In exemplary embodiments, the electrode disposal apparatus further comprises: a scale coupled to the disposal box and configured to detect a weight of the disposal box; and a transfer device configured to move the disposal box and the scale, wherein the transfer device is configured to move the disposal box and the scale to a disposal position when the weight of the disposal box detected by the scale exceeds a reference weight. In exemplary embodiments, the electrode disposal apparatus further comprises a touch roll in contact with the electrode sheet wound on the bobbin. In exemplary embodiments, the cutter comprises a support part supporting a portion of the electrode sheet unwound from the bobbin and a cutting knife configured to cut the electrode sheet while the support part supports the electrode sheet. [Advantageous Effects] According to the electrode manufacturing apparatus according to exemplary embodiments, since the electrode disposal process can be automated, productivity of the electrode disposal process can be improved, and safety issues of operators and accidents can be prevented. The technical effects that can be obtained in exemplary embodiments of the present disclosure are not limited to the above-described effects, and other effects not mentioned can be clearly derived and understood by a person skilled in the art from the following description. In other words, unintended effects of implementing the exemplary embodim