公开(公告)号：US11056749B2

公开(公告)日：2021-07-06

申请号：US16333858

申请日：2018-07-12

Applicant: LG Chem, Ltd.

Inventor： Jin Uk Do ,  Je Jun Lee ,  Sang Suk Jung ,  Min Ki Jo

IPC: H01M50/317 ,  H01M10/04 ,  H01M4/04 ,  B23K26/21 ,  H01M50/30 ,  H01M50/60 ,  H01M50/183

Abstract: To solve the above-described objects, a method for manufacturing a secondary battery according to an embodiment of the present invention comprises: manufacturing an electrode assembly in which electrodes and a separator are alternately stacked; inserting the electrode assembly into a battery case through an opening; covering the opening of the battery case; injecting an electrolyte into the battery case through an injection hole formed in the battery case; closing the injection hole; performing a pre-formation process; and applying external force to a switch of a gas discharge device formed on one surface of the battery case, thereby linearly moving a gasket of the gas discharge device and opening a gas discharge hole, such that a first gas generated in the battery case is discharged to an outside of the battery case during the performing of the pre-formation process.

公开(公告)号：US20190267593A1

公开(公告)日：2019-08-29

申请号：US16333858

申请日：2018-07-12

Applicant: LG Chem, Ltd.

Inventor： Jin Uk Do ,  Je Jun Lee ,  Sang Suk Jung ,  Min Ki Jo

IPC: H01M2/12 ,  H01M10/04

Abstract: To solve the above-described objects, a method for manufacturing a secondary battery according to an embodiment of the present invention comprises: manufacturing an electrode assembly in which electrodes and a separator are alternately stacked; inserting the electrode assembly into a battery case through an opening; covering the opening of the battery case; injecting an electrolyte into the battery case through an injection hole formed in the battery case; closing the injection hole; performing a pre-formation process; and applying external force to a switch of a gas discharge device formed on one surface of the battery case, thereby linearly moving a gasket of the gas discharge device and opening a gas discharge hole, such that a first gas generated in the battery case is discharged to an outside of the battery case during the performing of the pre-formation process.

公开(公告)号：US11623303B2

公开(公告)日：2023-04-11

申请号：US16340987

申请日：2018-08-13

Applicant: LG CHEM, LTD.

Inventor： Minki Jo ,  Je Jun Lee ,  Sang Sok Jung ,  Jin Uk Do

IPC: H01M50/147 ,  H01M50/172 ,  H01M50/531 ,  H01M50/572 ,  B23K26/22 ,  H01M50/578 ,  H01M50/574 ,  H01M50/179 ,  B23K101/36

Abstract: A pressurizing mask for supporting a combination of a top cap assembly and an electrode assembly has a welding portion and an indent portion into which an electrode tab is inserted.

公开(公告)号：US20190229322A1

公开(公告)日：2019-07-25

申请号：US16335132

申请日：2018-05-23

Applicant: LG Chem, Ltd.

Inventor： Jin Uk Do ,  Je Jun Lee ,  Sang Suk Jung ,  Min Ki Jo

IPC: H01M2/36 ,  H01M2/12 ,  H01M4/04

Abstract: Disclosed are a method for manufacturing a secondary battery and an auxiliary case configured for use during manufacturing of the secondary battery. A gas generated in the secondary battery may be discharged to prevent an electrode assembly and the secondary battery from increasing in thickness, and an electrolyte may be efficiently injected into the secondary battery. A method for manufacturing a secondary battery includes: an accommodation step of accommodating an electrode assembly into a battery case; a connection step of connecting an auxiliary case to the battery case, the auxiliary case having an inner space therein; an injection step of injecting an electrolyte into the battery case and the auxiliary case; an electrolyte supply step of moving some of the electrolyte from the auxiliary case into the battery case; and a gas supply step of moving a gas from the battery case into the auxiliary case.

公开(公告)号：US11316237B2

公开(公告)日：2022-04-26

申请号：US16335132

申请日：2018-05-23

Applicant: LG Chem, Ltd.

Inventor： Jin Uk Do ,  Je Jun Lee ,  Sang Suk Jung ,  Min Ki Jo

IPC: H01M50/60 ,  H01M4/04 ,  H01M10/04 ,  H01M50/30

Abstract: Disclosed are a method for manufacturing a secondary battery and an auxiliary case configured for use during manufacturing of the secondary battery. A gas generated in the secondary battery may be discharged to prevent an electrode assembly and the secondary battery from increasing in thickness, and an electrolyte may be efficiently injected into the secondary battery. A method for manufacturing a secondary battery includes: an accommodation step of accommodating an electrode assembly into a battery case; a connection step of connecting an auxiliary case to the battery case, the auxiliary case having an inner space therein; an injection step of injecting an electrolyte into the battery case and the auxiliary case; an electrolyte supply step of moving some of the electrolyte from the auxiliary case into the battery case; and a gas supply step of moving a gas from the battery case into the auxiliary case.

公开(公告)号：US10693195B2

公开(公告)日：2020-06-23

申请号：US15023873

申请日：2015-11-04

Applicant: LG CHEM, LTD.

Inventor： Jin Uk Do ,  Ju Bin Kim ,  Sang Sok Jung

IPC: H01M10/42 ,  H01M2/02 ,  H01M10/04

Abstract: Provided is a rechargeable battery. The rechargeable battery includes an electrode assembly, an electrolyte immersing the electrode assembly therein, a case assembly accommodating the electrode assembly and the electrolyte, and an absorbing member disposed in the electrode assembly to absorb stress applied to the inside of the electrode assembly when the electrode assembly is expanded.