公开(公告)号：US11043669B2

公开(公告)日：2021-06-22

申请号：US16344659

申请日：2018-06-01

Applicant: LG Chem, Ltd.

Inventor： Nam Won Kim ,  Pil Kyu Park ,  Han Gab Song ,  An Soo Jeong

IPC: H01M4/36 ,  H01M10/0587 ,  H01M10/04 ,  H01M50/531 ,  H01M50/538 ,  H01M4/02

Abstract: The present invention relates to a secondary battery. The secondary battery comprises an electrode assembly in which an electrode and a separator are alternately stacked and wound, wherein the electrode comprises a collector, a first coating layer in which an electrode active material is applied to a surface of the collector, and a second coating layer in which the electrode active material is applied to the outside of the first coating layer, wherein an end of the second coating layer has a length less than an end of first coating layer in a winding direction of the electrode, and a stepped portion occurs between the end of the first coating layer and the end of the second coating layer in a direction outward from a winding center.

公开(公告)号：US11495783B2

公开(公告)日：2022-11-08

申请号：US16467177

申请日：2018-06-27

Applicant: LG Chem, Ltd.

Inventor： Nam Won Kim ,  Pil Kyu Park ,  Han Gab Song ,  Duck Joong Yun ,  Dae Hyun Kim ,  An Soo Jeong

IPC: H01M4/04 ,  B21B37/16 ,  B21B38/08 ,  B21B1/24

Abstract: A system for manufacturing an electrode for a secondary battery is disclosed herein. In an embodiment, the system for manufacturing the electrode for the secondary battery comprises a supply roller for supplying a collector having a long sheet shape; an electrode active material coating device for applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller for rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device for inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.

公开(公告)号：US11072007B2

公开(公告)日：2021-07-27

申请号：US16325318

申请日：2018-07-03

Applicant: LG Chem, Ltd.

Inventor： An Soo Jeong ,  Pil Kyu Park ,  Han Gab Song ,  Duck Joong Yun ,  Dae Hyun Kim ,  Nam Won Kim

IPC: E21B1/30 ,  B21B1/30 ,  B21B37/16 ,  B21B38/08 ,  G01J1/02 ,  H01M4/04 ,  H01M4/88

Abstract: The present invention relates to a system for manufacturing an electrode for a secondary battery. The system for manufacturing the electrode for the secondary battery comprises a supply roller supplying a collector having a long sheet shape; an electrode active material coating device applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device inspecting quality of the electrode through a surface roughness value of the rolling roller and a surface roughness value of the electrode.

公开(公告)号：US20200058962A1

公开(公告)日：2020-02-20

申请号：US16344659

申请日：2018-06-01

Applicant: LG Chem, Ltd.

Inventor： Nam Won Kim ,  Pil Kyu Park ,  Han Gab Song ,  An Soo Jeong

IPC: H01M10/0587 ,  H01M4/36 ,  H01M2/26

Abstract: The present invention relates to a secondary battery. The secondary battery comprises an electrode assembly in which an electrode and a separator are alternately stacked and wound, wherein the electrode comprises a collector, a first coating layer in which an electrode active material is applied to a surface of the collector, and a second coating layer in which the electrode active material is applied to the outside of the first coating layer, wherein an end of the second coating layer has a length less than an end of first coating layer in a winding direction of the electrode, and a stepped portion occurs between the end of the first coating layer and the end of the second coating layer in a direction outward from a winding center.

公开(公告)号：US20190201952A1

公开(公告)日：2019-07-04

申请号：US16325318

申请日：2018-07-03

Applicant: LG Chem, Ltd.

Inventor： An Soo Jeong ,  Pil Kyu Park ,  Han Gab Song ,  Duck Joong Yun ,  Dae Hyun Kim ,  Nam Won Kim

IPC: B21B1/30 ,  B21B37/16 ,  B21B38/08 ,  G01J1/02 ,  H01M4/04 ,  H01M4/88

CPC classification number: B21B1/30 ,  B21B37/16 ,  B21B38/08 ,  G01J1/02 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/8896

Abstract: The present invention relates to a system for manufacturing an electrode for a secondary battery. The system for manufacturing the electrode for the secondary battery comprises a supply roller supplying a collector having a long sheet shape; an electrode active material coating device applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device inspecting quality of the electrode through a surface roughness value of the rolling roller and a surface roughness value of the electrode.

公开(公告)号：US11539044B2

公开(公告)日：2022-12-27

申请号：US16605491

申请日：2018-08-20

Applicant: LG CHEM, LTD.

Inventor： Nam Won Kim ,  Pil Kyu Park ,  Han Gab Song ,  Duck Joong Yun ,  Dea Hyun Kim ,  An Soo Jeong

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/139 ,  H01M10/0587 ,  H01M4/02

Abstract: The present disclosure relates to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly, and more particularly, to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly having improved stability.
In accordance with an exemplary embodiment, a secondary battery electrode includes a current collector that extends in one direction, a first active material layer provided on one surface of the current collector and including a first inclined portion and a first protruding portion, and a second active material layer provided on the other surface of the current collector and including a second inclined portion and a second protruding portion. In particular, a position of the second protruding portion is controlled on the second active material layer to be disposed at a position that is not directly opposite to the first inclined portion with respect to the current collector.

公开(公告)号：US20190319256A1

公开(公告)日：2019-10-17

申请号：US16467177

申请日：2018-06-27

Applicant: LG Chem, Ltd.

Inventor： Nam Won Kim ,  Pil Kyu Park ,  Han Gab Song ,  Duck Joong Yun ,  Dae Hyun Kim ,  An Soo Jeong

IPC: H01M4/04 ,  B21B1/24 ,  B21B37/16 ,  B21B38/08

Abstract: A system for manufacturing an electrode for a secondary battery is disclosed herein. In an embodiment, the system for manufacturing the electrode for the secondary battery comprises a supply roller for supplying a collector having a long sheet shape; an electrode active material coating device for applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller for rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device for inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.