公开(公告)号：US11050046B2

公开(公告)日：2021-06-29

申请号：US16615021

申请日：2018-12-14

申请人： LG Chem, Ltd.

发明人： Taek Soo Lee ,  Cheol Woo Kim ,  Sang Hoon Choy

IPC分类号： H01M4/04

摘要： The present invention relates to an electrode slurry coating apparatus comprising a lower die applying electrode slurry on a collector, an intermediate die, an upper die, a first discharge part primarily applying the electrode slurry on the collector to form a first coating layer; an intermediate pressing part pressing the first coating layer to adjust a thickness of the first coating layer; a second discharge part secondarily applying the electrode slurry on a surface of the first coating layer to form a second coating layer; and an upper pressing part pressing the first coating layer and the second coating layer, which are stacked, at the same time to adjust a thickness of each of the first coating layer and the second coating layer, wherein the first discharge part has a width less than that of the second discharge part.

公开(公告)号：US20200014056A1

公开(公告)日：2020-01-09

申请号：US16493557

申请日：2018-11-09

申请人： LG Chem, Ltd.

发明人： Junsoo Park ,  Taek Soo Lee ,  Song Taek Oh

IPC分类号： H01M10/052 ,  H01M4/13 ,  H01M4/04 ,  H01M4/62

摘要： An electrode for a rechargeable battery in which a current collector is coated with an electrode mixture including an electrode active material and a binder includes a first electrode composite layer including PVdF as a first binder and an electrode active material and applied on a current collector; and a second electrode composite layer including a second binder and an electrode active material and applied on the first electrode composite layer, wherein crystallinity of the first binder is 58 or greater.

公开(公告)号：US09742000B2

公开(公告)日：2017-08-22

申请号：US14834490

申请日：2015-08-25

申请人： LG Chem, Ltd.

发明人： Sang Kyun Lee ,  Je Young Kim ,  Taek Soo Lee

IPC分类号： H01M4/82 ,  H01M4/04 ,  H01M4/62 ,  H01M4/13 ,  H01M4/139 ,  H01M4/131 ,  H01M4/525 ,  H01M4/66 ,  H01M4/1391 ,  H01M10/052

CPC分类号： H01M4/0471 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M2300/004

摘要： The present invention relates to an electrode having a dual layer structure, a method for manufacturing the same, and a lithium secondary battery comprising the same, the electrode comprising: an electrode current collector; a middle layer formed on at least one side of the electrode current collector; and an electrode active material layer formed on the middle layer, wherein the middle layer comprises a first binder, wherein the electrode active material layer comprises an electrode active material and a second binder, and wherein the first binder and the second binder are the same kind of material but have different crystalline phases.

公开(公告)号：US11728507B2

公开(公告)日：2023-08-15

申请号：US16493557

申请日：2018-11-09

申请人： LG Chem, Ltd.

发明人： Junsoo Park ,  Taek Soo Lee ,  Song Taek Oh

IPC分类号： H01M10/052 ,  H01M4/04 ,  H01M4/13 ,  H01M4/62 ,  H01M4/139 ,  H01M4/36 ,  H01M4/02

CPC分类号： H01M10/052 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/623 ,  H01M2004/027 ,  H01M2004/028

摘要： An electrode for a rechargeable battery in which a current collector is coated with an electrode mixture including an electrode active material and a binder includes a first electrode composite layer including PVdF as a first binder and an electrode active material and applied on a current collector; and a second electrode composite layer including a second binder and an electrode active material and applied on the first electrode composite layer, wherein crystallinity of the first binder is 58 or greater.

公开(公告)号：US11511309B2

公开(公告)日：2022-11-29

申请号：US17278963

申请日：2020-08-31

申请人： LG Chem, Ltd.

发明人： Ki Tae Kim ,  Do Hyun Lee ,  Taek Soo Lee ,  Cheol Woo Kim ,  Young Joon Jo ,  Sang Hoon Choy

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

摘要： The present invention relates to a double slit coating die, and an electrode active material coating apparatus comprising same, the double slit coating die comprising first to fourth blocks which are positioned sequentially adjacent to each other, and having a structure in which the positions of the first and second blocks can move in a direction tilted at an angle θ with respect to the interface between the second and third blocks. The present invention has the effects of preventing slip surfaces between blocks constituting the die from spreading apart, and reducing offset in a coating process.

公开(公告)号：US11283057B2

公开(公告)日：2022-03-22

申请号：US16604334

申请日：2018-11-09

申请人： LG CHEM, LTD.

发明人： Taek Soo Lee ,  Cheolwoo Kim ,  Sang Hoon Choy

IPC分类号： H01M4/04 ,  B26F1/12 ,  H01M4/131 ,  H01M4/139 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0585

摘要： A method of manufacturing an irregular electrode includes forming a first electrode line by continuously coating a first electrode slurry on a metal sheet, forming at least one second electrode line formed with a dotted line shape including uncoated portions positioned in parallel to the first electrode line by intermittently coating a second electrode slurry on the metal sheet that does not overlap the first electrode line, and forming the irregular electrode by notching the metal sheet with an irregular shape including the second electrode line and the first electrode line except for the uncoated portions of the at least one second electrode line.

公开(公告)号：US10910639B2

公开(公告)日：2021-02-02

申请号：US16069730

申请日：2017-09-27

申请人： LG CHEM, LTD.

发明人： Taek Soo Lee ,  Chang Wan Koo ,  Sang Hoon Choi ,  Jung Min Yang ,  Il Jae Moon

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/13 ,  H01M4/62 ,  H01M4/139 ,  H01M10/0525 ,  H01M4/02

摘要： A multi-layer negative electrode according to an embodiment of the present disclosure includes: a current collector configured to transmit electrons between an outer lead and a negative electrode active material; a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and including a first negative electrode active material and a first binder; and a second negative electrode mixture layer formed on the first negative electrode mixture layer and including a second negative electrode active material, wherein the first negative electrode mixture layer has an electrode density of about 0.9 to 2.0 g/cc and the second negative electrode mixture layer has an electrode density of about 0.2 to 1.7 g/cc, which is a range lower than that of the electrode density of the first negative electrode mixture layer. The multi-layer negative electrode can be included in a lithium secondary battery.

公开(公告)号：US12057567B2

公开(公告)日：2024-08-06

申请号：US17285984

申请日：2020-10-06

申请人： LG CHEM, LTD.

发明人： Taek Soo Lee ,  Sang Hoon Choy ,  Ki Tae Kim ,  Cheol Woo Kim ,  Young Joon Jo

IPC分类号： H01M4/139 ,  H01M4/04 ,  H01M4/62 ,  H01M10/052

CPC分类号： H01M4/139 ,  H01M4/0404 ,  H01M4/621 ,  H01M10/052

摘要： The present invention relates to an electrode slurry coating device and method, wherein the heights of first and second slot die heads for discharging active material can be controlled according to time to improve process efficiency and reduce defect rates when forming an active material layer having a double layer structure.

公开(公告)号：US11448597B2

公开(公告)日：2022-09-20

申请号：US16652290

申请日：2018-12-17

申请人： LG Chem, Ltd.

发明人： Jin Young Son ,  Moo Yong Shin ,  Taek Soo Lee ,  Cheol Woo Kim ,  Sang Hoon Choy

IPC分类号： G01N21/57 ,  H01M4/04 ,  G01N21/35 ,  G01N21/47 ,  G01N21/65 ,  G01N21/3554 ,  G01N21/25 ,  H01M4/88 ,  G01N15/14

摘要： The present invention relates to an apparatus and method for monitoring a dry state of an electrode substrate in which electrode slurry is applied to a collector. The monitoring method comprises emitting light onto a surface of the electrode substrate; receiving the light reflected by the surface of the electrode substrate; and analyzing a luminous intensity or spectrum of the received light to estimate a drying rate of the electrode substrate.
The apparatus includes a light emitting part emitting light from a light source onto a surface of the electrode substrate; a light receiving part receiving the light reflected by the surface of the electrode substrate; and a computing device analyzing a luminous intensity or spectrum of the received light and comparing analyzed characteristics of the light with the reference data of the reflected light to the drying rate of the electrode substrate.

公开(公告)号：US20200185696A1

公开(公告)日：2020-06-11

申请号：US16615021

申请日：2018-12-14

申请人： LG Chem, Ltd.

发明人： Taek Soo Lee ,  Cheol Woo Kim ,  Sang Hoon Choy

IPC分类号： H01M4/04

摘要： The present invention relates to an electrode slurry coating apparatus comprising a lower die applying electrode slurry on a collector, an intermediate die, and an upper die, a first discharge part primarily applying the electrode slurry on the collector to form a first coating layer; an intermediate pressing part pressing the first coating layer to adjust a thickness of the first coating layer; a second discharge part secondarily applying the electrode slurry on a surface of the first coating layer to form a second coating layer; and an upper pressing part pressing the first coating layer and the second coating layer, which are stacked, at the same time to to adjust a thickness of each of the first coating layer and the second coating layer, wherein the first discharge part has a width less than that of the second discharge part.