公开(公告)号：US20200295410A1

公开(公告)日：2020-09-17

申请号：US16497235

申请日：2018-07-10

Applicant: LG Chem, Ltd.

Inventor： Chul Gi Hong ,  Jae Hyun Lee ,  Seok Koo Kim ,  Dong Kyu Kim ,  Dae Soo Kim

IPC: H01M10/42 ,  H01M10/052 ,  H01M4/38 ,  G01R31/392 ,  G01R31/389

Abstract: A method for regenerating a lithium secondary battery including a lithium resupply step in which a lithium resupply electrode is provided in the secondary battery, and the positive electrode is set as a counter electrode, and the lithium resupply electrode is set as a working electrode to charge lithium ions to the positive electrode through the lithium resupply electrode and a negative electrode discharging step in which, after the lithium ions are resupplied to the positive electrode through the lithium resupply step, the lithium resupply electrode is set as the counter electrode, and the negative electrode is set as the working electrode to completely discharge the negative electrode up to a discharge limit.

公开(公告)号：US20200287249A1

公开(公告)日：2020-09-10

申请号：US16481636

申请日：2018-10-02

Applicant: LG Chem, Ltd.

Inventor： Chul Gi Hong

IPC: H01M10/42

Abstract: A method of regenerating a battery cell according to an embodiment of the present invention includes: inserting the battery cell into a magnetic resonance imaging device; measuring a location of a by-product formed in the battery cell using the magnetic resonance imaging device; and ionizing a material contained in the by-product by irradiating radiant rays by targeting the by-product at the measured location.

公开(公告)号：US11374285B2

公开(公告)日：2022-06-28

申请号：US16346014

申请日：2018-06-26

Applicant: LG CHEM, LTD.

Inventor： Chul Gi Hong ,  Dong Kyu Kim ,  Dae Soo Kim

IPC: H01M50/333 ,  B01D39/16 ,  B01D46/12 ,  H01M50/60

Abstract: A secondary battery according to the present invention including a battery case with an accommodation part accommodating an electrode assembly and an electrolyte, a fluid inlet/outlet port provided in the battery case to provide a moving passage through which a fluid is movable so that discharge of an inner gas and reinjection of the electrolyte are enabled, a gas discharge part restricting the discharge of the inner gas passing through the fluid inlet/outlet port, and an electrolyte reinjection part provided to reinject the electrolyte through the fluid inlet/outlet port.

公开(公告)号：US11081765B2

公开(公告)日：2021-08-03

申请号：US16470026

申请日：2018-01-23

Applicant: LG CHEM, LTD.

Inventor： Chul Gi Hong ,  Jae Hyun Lee ,  Dong Kyu Kim ,  Dae Soo Kim

IPC: H01M50/609 ,  H01M50/618 ,  H01M50/627 ,  H01M50/673 ,  H01M50/682 ,  H01M50/60 ,  H01M50/691 ,  H01M10/42

Abstract: The present invention relates to a battery cell refillable with an electrolyte, an electrolyte refilling system for a battery pack configured to include a plurality of battery cells, and an electrolyte refilling method for a battery pack of an electric vehicle.

公开(公告)号：US11362373B2

公开(公告)日：2022-06-14

申请号：US16497235

申请日：2018-07-10

Applicant: LG Chem, Ltd.

Inventor： Chul Gi Hong ,  Jae Hyun Lee ,  Seok Koo Kim ,  Dong Kyu Kim ,  Dae Soo Kim

IPC: H01M10/42 ,  G01R31/389 ,  G01R31/392 ,  H01M4/38 ,  H01M10/052

Abstract: A method for regenerating a lithium secondary battery including a lithium resupply step in which a lithium resupply electrode is provided in the secondary battery, and the positive electrode is set as a counter electrode, and the lithium resupply electrode is set as a working electrode to charge lithium ions to the positive electrode through the lithium resupply electrode and a negative electrode discharging step in which, after the lithium ions are resupplied to the positive electrode through the lithium resupply step, the lithium resupply electrode is set as the counter electrode, and the negative electrode is set as the working electrode to completely discharge the negative electrode up to a discharge limit.

公开(公告)号：US11258146B2

公开(公告)日：2022-02-22

申请号：US16627022

申请日：2018-01-11

Applicant: LG Chem, Ltd.

Inventor： Chul Gi Hong ,  Dong Kyu Kim

IPC: H01M50/578 ,  H01M50/172

Abstract: The present invention relates to a battery cell having an overcharge prevention member, and more particularly, to a battery cell including a protective member for preventing explosion due to the pressure caused by various factors inside the battery.

公开(公告)号：US11387499B2

公开(公告)日：2022-07-12

申请号：US16341627

申请日：2018-07-10

Applicant: LG CHEM, LTD.

Inventor： Chul Gi Hong ,  Jae Hyun Lee ,  Dong Kyu Kim ,  Dae Soo Kim

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/52

Abstract: A method for regenerating a cell having an electrode assembly, in which electrodes and a separator are alternately combined with each other, an electrolyte, and a battery case accommodating the electrode assembly and the electrolyte according to the present invention includes performing a negative pressure processing process in which a negative pressure is applied to the cell to allow a gas disposed between the electrodes to move outside the electrode assembly and performing an ultrasonic wave processing process in which the cell is stimulated by ultrasonic waves to allow the electrolyte disposed outside the electrode assembly to move between the electrodes.

公开(公告)号：US11355787B2

公开(公告)日：2022-06-07

申请号：US16618464

申请日：2018-12-20

Applicant: LG CHEM, LTD.

Inventor： Chul Gi Hong ,  Dae Soo Kim ,  Dong Kyu Kim ,  Jae Hyun Lee

IPC: H01M10/42 ,  H01M10/0585 ,  H01M10/39 ,  H01M10/0525

Abstract: A method for regenerating an end of life (EOL) cell which comprises an electrode assembly including a cathode, an anode, and a separator interposed between the cathode and the anode, wherein the EOL cell is left under a high temperature environment of 80° C. or higher for a predetermined time while pressure is applied thereto, whereby gas located within the electrode assembly is moved to the outer portion of the electrode assembly is provided. The method can regenerate an EOL cell in a simple and economical way without breaking or damaging the same, and furthermore can also be applied to a pack or module which is an extended unit of the cell. A pressuring jig is also provided.

公开(公告)号：US11145911B2

公开(公告)日：2021-10-12

申请号：US16481636

申请日：2018-10-02

Applicant: LG Chem, Ltd.

Inventor： Chul Gi Hong

IPC: H01M10/42 ,  B08B7/00

Abstract: A method of regenerating a battery cell according to an embodiment of the present invention includes: inserting the battery cell into a magnetic resonance imaging device; measuring a location of a by-product formed in the battery cell using the magnetic resonance imaging device; and ionizing a material contained in the by-product by irradiating radiant rays by targeting the by-product at the measured location.