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公开(公告)号：US20250062058A1
公开(公告)日：2025-02-20
申请号：US18726210
申请日：2023-09-13
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Su Yoon , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon , Young Gon Kim
Abstract: A magnetic alignment device includes a first magnet part and a second magnet part, a loading amount measuring part, and a control part. The first and second magnet parts accommodate an electrode sheet therebetween and the loading amount measuring part measures a loading amount of a negative electrode slurry disposed on the electrode sheet. The control part adjusts the separation distance of the first and second magnet parts, The magnetic alignment device measures the loading amount of the negative electrode slurry applied on the negative electrode collector in real time and controls the intensity of the magnetic field by adjusting the separation distance of the magnet part according to the measured negative electrode slurry loading amount. A method using the same is also provided.
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公开(公告)号：US20240429366A1
公开(公告)日：2024-12-26
申请号：US18719377
申请日：2023-09-21
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Su Yoon , Young Gon Kim , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon
Abstract: A magnetic alignment device applies a magnetic field to a negative electrode slurry by introducing a magnet part to an upper and a lower portion of a negative electrode current collector to which the negative electrode slurry is applied, respectively, wherein a first region located upstream along a transfer direction of the negative electrode current collector is capable of applying a stronger magnetic force than a second region located downstream in the magnet part. Accordingly, in manufacturing the negative electrode, the alignment of the carbon-based negative electrode active material contained in the negative electrode slurry and the arithmetic mean height of the surface of the negative electrode active layer can be easily controlled to a certain range. Furthermore, the negative electrode prepared according to the method has the advantage of having excellent electrical properties and surface properties of the negative electrode active layer.
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公开(公告)号：US20240421281A1
公开(公告)日：2024-12-19
申请号：US18818999
申请日：2024-08-29
Applicant: LG Energy Solution, Ltd.
Inventor： Jin Hwan Shin , Sang Hoon Choy , Shin Wook Jeon , Young Kuk Ko
IPC: H01M4/04
Abstract: A method and apparatus for coating an electrode is disclosed herein. In some embodiments, an apparatus for coating an electrode slurry includes a coating die configured to coat an electrode slurry on one surface of a current collector, a thickness measuring sensor spaced apart from the current collector by a predetermined interval and configured to measure a thickness of the coated electrode slurry in real time after coating by the coating die; and a controller which controls a coated amount of the electrode slurry in real time according to the measured thickness.
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公开(公告)号：US11850626B2
公开(公告)日：2023-12-26
申请号：US17502814
申请日：2021-10-15
Applicant: LG Energy Solution, Ltd.
Inventor： Chang Hun Lee , Seong Wook Hong , Dong Hun Song , Byoung Hoon Ahn , Chae Gyu Lee , Sang Hoon Choy , Shin Wook Jeon
CPC classification number: B05C5/0254 , B05D1/26 , H01M4/0402
Abstract: A die for coating an insulating liquid may include a die body configured to be positioned on a current collector with a certain space and discharge an insulating liquid; and a discharge portion configured to be formed on one surface where the insulating liquid of the die body is discharged, and form a discharge path and a discharge port where the insulating liquid is discharged, wherein the discharge portion includes a first discharge portion positioned at a front region side of a coating direction of the insulating liquid, and a second discharge portion positioned at a rear region side of the coating direction of the insulating liquid, an insulating liquid discharge path is formed between the first discharge portion and the second discharge portion, and an insulating liquid discharge port is formed between an end of the first discharge portion and an end of the second discharge portion.
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公开(公告)号：US20230110084A1
公开(公告)日：2023-04-13
申请号：US17908651
申请日：2021-11-04
Applicant: LG Energy Solution, Ltd.
Inventor： Jin Hwan Shin , Sang Hoon Choy , Shin Wook Jeon , Young Kuk Ko
IPC: H01M4/04
Abstract: A method and apparatus for coating an electrode is disclosed herein. In some embodiments, an apparatus for coating an electrode slurry includes a coating die configured to coat an electrode slurry on one surface of a current collector, a thickness measuring sensor spaced apart from the current collector by a predetermined interval and configured to measure a thickness of the coated electrode slurry in real time after coating by the coating die; and a controller which controls a coated amount of the electrode slurry in real time according to the measured thickness.
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Patent Agency Ranking
公开(公告)号：US20220134379A1
公开(公告)日：2022-05-05
申请号：US17502814
申请日：2021-10-15
Applicant: LG Energy Solution, Ltd.
Inventor： Chang Hun Lee , Seong Wook Hong , Dong Hun Song , Byoung Hoon Ahn , Chae Gyu Lee , Sang Hoon Choy , Shin Wook Jeon
Abstract: A die for coating an insulating liquid may include a die body configured to be positioned on a current collector with a certain space and discharge an insulating liquid; and a discharge portion configured to be formed on one surface where the insulating liquid of the die body is discharged, and form a discharge path and a discharge port where the insulating liquid is discharged, wherein the discharge portion includes a first discharge portion positioned at a front region side of a coating direction of the insulating liquid, and a second discharge portion positioned at a rear region side of the coating direction of the insulating liquid, an insulating liquid discharge path is formed between the first discharge portion and the second discharge portion, and an insulating liquid discharge port is formed between an end of the first discharge portion and an end of the second discharge portion.
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公开(公告)号：US20250112264A1
公开(公告)日：2025-04-03
申请号：US18854779
申请日：2023-11-27
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Jong Su Yoon , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon , Young Gon Kim
Abstract: A negative electrode for a lithium secondary battery includes a carbon-based negative electrode active material and a silicon-based negative electrode active material together as a negative electrode active material. The negative electrode exhibits excellent characteristics of charge and discharge capacity and energy density. Furthermore, the negative electrode has the advantage of exhibiting high charge characteristics and life characteristics during long-term charge and discharge by realizing the alignment (O.Ia) of the carbon-based negative electrode active material after activation in a predetermined range that is lower than the alignment (O.Ir) of the carbon-based negative electrode active material before activation. A lithium secondary battery including the negative electrode is also provided. Further, methods of manufacturing the negative electrode and the lithium secondary battery are also provided.
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公开(公告)号：US20250112263A1
公开(公告)日：2025-04-03
申请号：US18853257
申请日：2023-11-27
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Su Yoon , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon , Young Gon Kim
IPC: H01M10/0525 , H01M4/02 , H01M4/04 , H01M4/36 , H01M4/583
Abstract: A negative electrode for a lithium secondary battery includes a negative electrode active layer divided into a center region, an edge region, and a sliding region on a negative electrode current collector. The lithium precipitation at the end of the negative electrode active layer can be suppressed by the alignment (O.I) of each carbon-based negative electrode active material contained in the center region, the edge region, and the sliding region satisfying Equation 1 and Equation 2. A secondary battery including the same has the advantage of excellent rapid charging performance. A method of manufacturing the negative electrode is also provided.
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公开(公告)号：US20250112262A1
公开(公告)日：2025-04-03
申请号：US18841176
申请日：2023-10-25
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Su Yoon , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon , Young Gon Kim
IPC: H01M10/0525 , H01M4/02 , H01M4/04 , H01M4/36 , H01M4/583
Abstract: Disclosed herein relates to a negative electrode for lithium secondary battery and a method for manufacturing the same. The negative electrode has a structure in which a first negative electrode active layer and a second negative electrode active layer are sequentially stacked on a negative electrode current collector. By controlling alignment (O.I) of the carbon-based active material to be lower in the second negative electrode active layer than in the first negative electrode active layer, and by preparing a low percentage of pores in the second negative electrode active layer, it is possible to have a flow path for the electrolyte to move inside the negative electrode active layer even after the rolling process of the negative electrode active layer. The negative electrode also has a high wetting ability to the electrolyte and high energy density.
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公开(公告)号：US20250108404A1
公开(公告)日：2025-04-03
申请号：US18728149
申请日：2023-09-13
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Su Yoon , Taek Soo Lee , Jin Ho Cho , Shin Wook Jeon , Young Gon Kim
Abstract: A magnetic alignment device includes a first magnet part and a second magnet part, a thickness measuring part, and a control part. The first and second magnet parts accommodate an electrode sheet therebetween and the thickness measuring part measures a thickness of a negative electrode slurry disposed on the electrode sheet. The control part adjusts the separation distance of the first and second magnet parts. The magnetic alignment device measures the thickness of the negative electrode slurry applied on the negative electrode current collector in real time and controls the intensity of the magnetic field by adjusting the separation distance of the magnet part according to the measured negative electrode slurry thickness, and has an advantage of uniformly high alignment degree of the crystal faces of the carbon-based negative electrode active material contained in prepared negative electrode active layer.
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