公开(公告)号：US11316237B2

公开(公告)日：2022-04-26

申请号：US16335132

申请日：2018-05-23

申请人： LG Chem, Ltd.

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

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

摘要： 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：US10153465B2

公开(公告)日：2018-12-11

申请号：US14705410

申请日：2015-05-06

申请人： LG CHEM, LTD.

发明人： Je Jun Lee ,  Sang Sok Jung ,  Hang Soo Shin

IPC分类号： H01M2/00 ,  H01M2/04 ,  H01M2/34 ,  H01M2/12 ,  H01M10/654 ,  H01M2/08

摘要： Provided is a top cap assembly for a cylindrical type secondary battery, including a CID short-circuiting member, which interrupts an electric current when a high voltage is generated in the cylindrical type secondary battery, a safety vent connected to an upper part of the CID short-circuiting member and including a plurality of notches, which are broken when a voltage equal to or greater than an allowable voltage of the CID short-circuiting member is generated, to discharge gas from the cylindrical type secondary battery, a top cap connected to the safety vent and disposed on the uppermost end of an upper opening part of the cylindrical type secondary battery, a gasket surrounding and sealing an outer circumferential surface of the CID short-circuiting member, and a heat resistant member preventing heat transfer between the gasket and the safety vent.

公开(公告)号：US10115935B2

公开(公告)日：2018-10-30

申请号：US14855050

申请日：2015-09-15

申请人： LG CHEM, LTD.

发明人： Je Jun Lee ,  Hang Soo Shin ,  Sang Sok Jung

IPC分类号： H01M2/02 ,  C23F11/02

摘要： Provided is a corrosion resistant tube for a secondary battery including a volatile corrosion inhibitor (VCI) and a base resin, and a secondary battery including the same. The corrosion resistant tube of the present invention prevents the occurrence of rust or the occurrence of corrosion in a battery cell, and therefore, is capable of enhancing stability of the battery.

公开(公告)号：US20210336309A1

公开(公告)日：2021-10-28

申请号：US17259395

申请日：2019-11-13

申请人： LG Chem, Ltd.

发明人： Geon Woo Min ,  Je Jun Lee ,  Sang Suk Jung

IPC分类号： H01M50/342 ,  H01M50/107 ,  H01M50/578

摘要： The present invention relates to a secondary battery capable of improving venting pressure distribution. A secondary battery including an electrode assembly, a can member that accommodates the electrode assembly, and a top cap assembly that covers an opening of the can member. The top cap assembly includes a top cap positioned at the uppermost portion and a safety vent part positioned below the top cap. The safety vent part includes a rupture portion that is ruptured when an internal pressure within the can member equals or exceeds a predetermined pressure, a rupture notch portion that defines a boundary of the rupture portion, and a bending notch portion which is spaced apart from the rupture notch portion toward a center of the rupture portion on a bottom surface of the rupture portion, and the bending notch portion is bent when the internal pressure within the can member increases.

公开(公告)号：US20200152952A1

公开(公告)日：2020-05-14

申请号：US16613596

申请日：2018-12-19

申请人： LG Chem, Ltd.

发明人： Ha Young Heo ,  Je Jun Lee ,  Hyoung Kwon Kim ,  Hae Jin Lim ,  Sang Uck Kim

IPC分类号： H01M2/26 ,  H01M10/04

摘要： A cylindrical secondary battery includes a jelly-roll type electrode assembly, a cylindrical battery case for receiving the jelly-roll type electrode assembly, and a cap assembly mounted to the open upper end of the cylindrical battery case. The jelly-roll type electrode assembly includes a long sheet type positive electrode and a long sheet type negative electrode wound with a separator interposed between the positive electrode and the negative electrode. A welding pole is formed on the bottom surface of the cylindrical battery case so as to extend perpendicularly thereto.

公开(公告)号：US20140302358A1

公开(公告)日：2014-10-09

申请号：US14353535

申请日：2012-12-13

申请人： LG CHEM, LTD

发明人： Sung Jong Kim ,  Je Jun Lee ,  Cha-Hun Ku ,  Byungkyu Jung

IPC分类号： H01M2/04

CPC分类号： H01M2/0404 ,  H01M2/0434 ,  H01M2/08 ,  H01M2/12 ,  H01M2/22 ,  H01M2/345 ,  H01M2/348 ,  H01M10/0422 ,  H01M10/052 ,  H01M10/0587

摘要： Disclosed herein is a cap assembly loaded on an open upper end of a cylindrical container of a battery configured to have a structure in which an electrode assembly (jelly roll) of a cathode/separator/anode structure is mounted in the cylindrical container, the cap assembly including a safety vent connected to a current interruptive device (CID) for safety, a protruding top cap connected to the safety vent along an outer circumference thereof, and a gasket mounted at an outer circumference of the top cap, wherein a cathode tab is attached to a cathode active material-uncoated portion of the cathode by welding and the gasket is provided with at least one groove depressed upward from an outer circumference of a lower end of the gasket for easy welding between the CID and the cathode tab at the time of manufacturing the battery.

摘要翻译： 本文公开了一种装载在电池的圆柱形容器的敞开的上端上的盖组件，其被构造成具有将阴极/隔板/阳极结构的电极组件（果冻卷）安装在圆筒形容器中的结构，帽 组件包括安全的连接到电流中断装置（CID）的安全通风孔，沿其外圆周连接到安全排气口的突出的顶盖以及安装在顶盖的外圆周处的垫圈，其中阴极接头是 通过焊接附接到阴极活性材料未涂覆的阴极部分，并且衬垫设置有从垫圈的下端的外周向上向上凹陷的至少一个凹槽，以便在此时CID和阴极接头之间容易焊接 制造电池。

公开(公告)号：US11056749B2

公开(公告)日：2021-07-06

申请号：US16333858

申请日：2018-07-12

申请人： LG Chem, Ltd.

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

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

摘要： 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

申请人： LG Chem, Ltd.

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

IPC分类号： H01M2/12 ,  H01M10/04

摘要： 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：US20180123163A1

公开(公告)日：2018-05-03

申请号：US15575653

申请日：2016-07-21

申请人： LG Chem, Ltd.

发明人： Pil Kyu Park ,  Joo Hwan Sung ,  Jung Koo Kang ,  Je Jun Lee ,  Han Gab Song ,  Yeo Min Yoon

IPC分类号： H01M10/052 ,  H01M2/04 ,  H01M2/12

摘要： The present invention relates to a cap assembly formed of a composite of cap assembly ceramic for the cylindrical battery and mounted on a top end portion of the cylindrical secondary battery in which an electrode assembly is placed in a cylindrical can, which includes a safety vent having a predetermined notch configured to be ruptured by high pressure gas generated in the battery, a current interrupt device coupled to a lower end of the safety vent and blocking a current when an internal pressure of the battery rises, and a gasket for the current interrupt device surrounding an outer circumferential surface of the current interrupt device, wherein the gasket for the current interrupt device comprises a polymer resin having a melting point of 250° C. or more and a heat deflection temperature (HDT) of 200° C. or more, and a cylindrical secondary battery including the same.

公开(公告)号：US09178190B2

公开(公告)日：2015-11-03

申请号：US14353535

申请日：2012-12-13

申请人： LG Chem, Ltd.

发明人： Sung Jong Kim ,  Je Jun Lee ,  Cha-Hun Ku ,  Byungkyu Jung

IPC分类号： H01M2/04 ,  H01M2/08 ,  H01M2/12 ,  H01M2/34 ,  H01M10/04 ,  H01M10/0587 ,  H01M2/22 ,  H01M10/052

CPC分类号： H01M2/0404 ,  H01M2/0434 ,  H01M2/08 ,  H01M2/12 ,  H01M2/22 ,  H01M2/345 ,  H01M2/348 ,  H01M10/0422 ,  H01M10/052 ,  H01M10/0587

摘要： Disclosed herein is a cap assembly loaded on an open upper end of a cylindrical container of a battery configured to have a structure in which an electrode assembly (jelly roll) of a cathode/separator/anode structure is mounted in the cylindrical container, the cap assembly including a safety vent connected to a current interruptive device (CID) for safety, a protruding top cap connected to the safety vent along an outer circumference thereof, and a gasket mounted at an outer circumference of the top cap, wherein a cathode tab is attached to a cathode active material-uncoated portion of the cathode by welding and the gasket is provided with at least one groove depressed upward from an outer circumference of a lower end of the gasket for easy welding between the CID and the cathode tab at the time of manufacturing the battery.

摘要翻译： 本文公开了一种装载在电池的圆柱形容器的敞开的上端上的盖组件，其被构造成具有将阴极/隔板/阳极结构的电极组件（果冻卷）安装在圆筒形容器中的结构，帽 组件包括安全的连接到电流中断装置（CID）的安全通风孔，沿其外圆周连接到安全排气口的突出的顶盖以及安装在顶盖的外圆周处的垫圈，其中阴极接头是 通过焊接附接到阴极活性材料未涂覆的阴极部分，并且衬垫设置有从垫圈的下端的外周向上向上凹陷的至少一个凹槽，以便在此时CID和阴极接头之间容易焊接 制造电池。