公开(公告)号：US20220016665A1

公开(公告)日：2022-01-20

申请号：US17276996

申请日：2019-09-30

Applicant: LG Chem, Ltd.

Inventor： Do-Hyun Lee ,  Cheol-Woo Kim ,  Sang-Hoon Choy

IPC: B05C5/02 ,  B05C11/10 ,  B05C9/06 ,  H01M4/04

Abstract: Disclosed is a slot die coater adjusting device, which adjusts a slot die coater including a lower die having a lower discharge hole for discharging a first active material slurry and an upper die having an upper discharge hole for discharging a second active material slurry, to adjust a distance between the lower discharge hole and the upper discharge hole by allowing the upper die to move. The slot die coater adjusting device includes pressing block assemblies respectively provided to both longitudinal sides of the slot die coater and fixed to the upper die; a linear motion (LM) guide disposed at a lower portion of the pressing block assembly and connected to the pressing block assembly to guide a movement of the pressing block assembly; a servo motor configured to give a power for moving the LM guide; and a reducer connected between the servo motor and the LM guide.

公开(公告)号：US20190351446A1

公开(公告)日：2019-11-21

申请号：US16473114

申请日：2018-06-29

Applicant: LG Chem, Ltd.

Inventor： Do-Hyun Lee ,  Taek-Soo Lee ,  Cheol-Woo Kim ,  Sang-Hoon Choy

IPC: B05C5/02 ,  H01M4/04

Abstract: Disclosed is a slot die coater for coating an electrode active material slurry on an electrode current collector, which includes a lower die having a lower outlet, and an upper die disposed above the lower die and having an upper outlet, wherein an upper surface of the lower die and a lower surface of the upper die are at least partially in contact with each other and capable of sliding relative to one another such that the upper die and the lower die are capable of sliding relative to each other along a horizontal direction.

公开(公告)号：US11691173B2

公开(公告)日：2023-07-04

申请号：US17276996

申请日：2019-09-30

Applicant: LG Chem, Ltd.

Inventor： Do-Hyun Lee ,  Cheol-Woo Kim ,  Sang-Hoon Choy

IPC: B05C5/02 ,  B05C9/06 ,  B05C11/02 ,  B05C11/10 ,  H01M4/04

CPC classification number: B05C5/0262 ,  B05C9/06 ,  B05C11/02 ,  B05C11/1002 ,  H01M4/0404

Abstract: Disclosed is a slot die coater adjusting device, which adjusts a slot die coater including a lower die having a lower discharge hole for discharging a first active material slurry and an upper die having an upper discharge hole for discharging a second active material slurry, to adjust a distance between the lower discharge hole and the upper discharge hole by allowing the upper die to move. The slot die coater adjusting device includes pressing block assemblies respectively provided to both longitudinal sides of the slot die coater and fixed to the upper die; a linear motion (LM) guide disposed at a lower portion of the pressing block assembly and connected to the pressing block assembly to guide a movement of the pressing block assembly; a servo motor configured to give a power for moving the LM guide; and a reducer connected between the servo motor and the LM guide.

公开(公告)号：US11038157B2

公开(公告)日：2021-06-15

申请号：US16096537

申请日：2017-12-08

Applicant: LG CHEM, LTD.

Inventor： Cheol-Woo Kim ,  Jin-Young Son ,  Hyun-Sik Chae ,  Sang-Hoon Choy

IPC: H01M4/04 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/66

Abstract: Disclosed is a method for manufacturing an electrode for a lithium secondary battery, including the steps of: (S1) dry mixing a conductive material and an electrode active material; (S2) dry mixing the resultant product of step (S1) with a binder to obtain electrode mixture powder; and (S3) applying the electrode mixture powder to at least one surface of a current collector. According to an embodiment of the present disclosure, electrode mixture powder is prepared without using a solvent and is applied to a current collector to provide an electrode. Thus, there is no need for a separate drying step. Therefore, the binder and conductive material coated on the surface of electrode active material cause no surface migration phenomenon. As a result, it is possible to prevent degradation of the adhesion of the electrode, and thus to prevent degradation of the performance of the lithium secondary battery.

公开(公告)号：US11161140B2

公开(公告)日：2021-11-02

申请号：US16473114

申请日：2018-06-29

Applicant: LG Chem, Ltd.

Inventor： Do-Hyun Lee ,  Taek-Soo Lee ,  Cheol-Woo Kim ,  Sang-Hoon Choy

IPC: B05C5/02 ,  B05B1/04 ,  H01M4/04

Abstract: Disclosed is a slot die coater for coating an electrode active material slurry on an electrode current collector, which includes a lower die having a lower outlet, and an upper die disposed above the lower die and having an upper outlet, wherein an upper surface of the lower die and a lower surface of the upper die are at least partially in contact with each other and capable of sliding relative to one another such that the upper die and the lower die are capable of sliding relative to each other along a horizontal direction.