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1. 发明公开

EP3670123A1 SYSTEM FOR BLANKING ELECTRODE SUBSTRATE AND METHOD FOR BLANKING SAME 审中-公开
公开(公告)号：EP3670123A1
公开(公告)日：2020-06-24
申请号：EP19846332.5
申请日：2019-07-01
申请人： LG CHEM, LTD.
发明人： KIM, Min Kyung , OH, Sei Woon , WOO, Sun Hwak , PARK, Jin Seo
IPC分类号： B26F1/40 , B26D7/01 , B26D7/27
摘要： A punching system for an electrode base material, in which the electrode base material coated with an active material on a surface of a collector is molded or cut in a predetermined shape, comprises: an unwinder on which the electrode base material wound in the form of a roll is mounted and around which the electrode base material is unwound; a punching device disposed to be spaced a predetermined distance from the unwinder, the punching device being configured to mold or cut the electrode base material supplied from the unwinder in a predetermined shape; and a curl correcting device disposed between the unwinder and the punching device to inject or suction air onto a surface of the electrode base material while the electrode base material moves to the punching device so as to planarize the electrode base material.
A punching method for an electrode base material, in which an electrode base material is molded or cut in a predetermined shape, comprises: a step of supplying the electrode base material wound around a unwinder to a punching device; and a step of monitoring whether warpage of the electrode base material occurs during movement of the electrode base material to the punching device to inject or suction air onto a surface of the electrode base material when the warpage occurs so as to planarize the electrode base material.

2. 发明公开

EP3376579A1 ELECTRODE ASSEMBLY HAVING INDENTED PORTION FORMED ON ELECTRODE PLATE AND SECONDARY BATTERY INCLUDING SAME 有权转让
公开(公告)号：EP3376579A1
公开(公告)日：2018-09-19
申请号：EP16875898.5
申请日：2016-10-18
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , KIM, Hyun Min , LEE, Eun Ju , WOO, Sun Hwak
IPC分类号： H01M10/04 , H01M2/26 , H01M2/02 , H01M2/10
CPC分类号： H01M2/26 , H01M2/02 , H01M2/0202 , H01M2/028 , H01M2/0287 , H01M2/08 , H01M2/10 , H01M4/13 , H01M10/04 , H01M10/0525 , H01M10/0583 , H01M10/0585 , H01M2220/30
摘要： The present invention relates to an electrode assembly including at least two electrode plates and a separator interposed between the electrode plates, wherein indented portions are formed from lower ends of opposite sides of the electrode tab in an opposite direction to an externally extending direction of the electrode tab in a side of the electrode body in which the electrode tab externally extends, in the electrode plates.

3. 发明授权

EP3352286B1 SECONDARY BATTERY COMPRISING GAS-ABSORBING POLYMER 有权转让
公开(公告)号：EP3352286B1
公开(公告)日：2020-09-09
申请号：EP17736122.7
申请日：2017-01-06
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , KIM, Hyun Min , WOO, Sun Hwak
IPC分类号： H01M10/42 , H01M10/52 , H01M10/0567 , H01M2/02 , H01M2/10 , B01J20/26 , H01M10/052 , H01M10/0585

4. 发明公开

EP3352286A1 SECONDARY BATTERY COMPRISING GAS-ABSORBING POLYMER 有权转让
公开(公告)号：EP3352286A1
公开(公告)日：2018-07-25
申请号：EP17736122.7
申请日：2017-01-06
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , KIM, Hyun Min , WOO, Sun Hwak
IPC分类号： H01M10/42 , H01M10/52 , H01M10/0567 , H01M2/02 , H01M2/10 , B01J20/26
摘要： The present invention provides a secondary battery in which an electrode assembly is sealed within a battery case together with an electrolyte, wherein a gas-absorbing polymer having an azo group is included in the battery cell so as to absorb gas generated within the battery.

5. 发明公开

EP3641017A2 SECONDARY BATTERY 有权转让
公开(公告)号：EP3641017A2
公开(公告)日：2020-04-22
申请号：EP18870996.8
申请日：2018-10-19
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , CHO, Sung Hwan , LIM, Soo-Hyun , WOO, Sun Hwak , PARK, Jinseo
IPC分类号： H01M2/26 , H01M2/02
摘要： A rechargeable battery includes an electrode assembly; a case comprising a sealing portion surrounding the electrode assembly; and a lead electrically connected to the electrode assembly and extending in a first direction, wherein the lead includes a first region in contact with the electrode assembly and located inside the case; a second region exposed to an outside of the case; and a third region located between the first region and the second region and overlapping the sealing portion of the case, wherein the third region has a width greater than the first region and the second region in a second direction and has a thickness smaller than the first region and the second region in a third direction, and wherein the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and the second direction.

6. 发明公开

EP3348373A1 BATTERY CASE MANUFACTURING DEVICE HAVING IMPROVED PRODUCTION PROCESSABILITY AND MANUFACTURING METHOD USING SAME 有权转让
公开(公告)号：EP3348373A1
公开(公告)日：2018-07-18
申请号：EP17766931.4
申请日：2017-03-13
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , KIM, Hyun Min , WOO, Sun Hwak , YOON, Yeo Kyung , LEE, Eun Ju , LEE, Ji Eun , HWANG, Soo Ji
IPC分类号： B29C49/22 , H01M2/02 , B29C49/78
CPC分类号： B29C51/10 , B29C49/22 , B29C49/78 , B29C51/002 , B29C51/14 , B29C51/36 , B29C51/40 , B29C51/46 , B29K2023/00 , B29K2067/003 , B29K2077/00 , B29K2827/18 , B29K2995/0067 , B29K2995/0069 , B29L2009/003 , B29L2031/3468 , B29L2031/7146 , H01M2/02 , H01M2/0202 , H01M2220/30
摘要： The present invention provides a manufacturing device of a battery case including a first mold including a first space part having a shape corresponding to a storage part formed therein; a second mold including a second space part having a shape corresponding to the storage part and a through-hole communicating with the second space part formed therein, and coupled to the first mold with a laminate sheet interposed therebetween; and an air pressure regulator mounted in the through-hole in a state in which the first space part and the second space part are isolated from the outside, and increasing or decreasing an air pressure of the second space part through the through-hole to stretch and modify the laminate sheet into a shape corresponding to the first space part or the second space part.

7. 发明公开

EP3846254A1 METHOD OF PREPARING ELECTRODE FOR SECONDARY BATTERY 有权转让
公开(公告)号：EP3846254A1
公开(公告)日：2021-07-07
申请号：EP20759693.3
申请日：2020-01-20
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , KIM, Minkyung , YOON, Yeo Kyung , WOO, Sun Hwak
IPC分类号： H01M4/139 , H01M4/04
摘要： A method of preparing an electrode for a secondary battery according to an embodiment of the present disclosure includes the steps of: injecting a first slurry prepared by dissolving a first active material in a first solvent and a second slurry prepared by dissolving a second active material in a second solvent into a single coating device; and coating the first slurry and the second slurry onto a current collector through the single coating device, wherein the first solvent and the second solvent have different physical properties, and form a layered structure of a first layer including the first slurry and a second layer including the second slurry on the current collector, respectively.

8. 发明公开

EP3582295A2 ONE-SIDED ELECTRODE WITH REDUCED TWISTING FOR A SECONDARY BATTERY, AND METHOD FOR PRODUCING SAME 有权转让
公开(公告)号：EP3582295A2
公开(公告)日：2019-12-18
申请号：EP18869984.7
申请日：2018-10-24
申请人： LG Chem, Ltd.
发明人： OH, Sei Woon , YOON, Yeo Kyung , WOO, Sun Hwak , JEONG, Yu Ra
IPC分类号： H01M4/13 , H01M4/139 , H01M4/04 , H01M10/052
摘要： The present invention provides a one-sided electrode for a secondary battery comprising a current collector, an electrode mixture layer applied to one surface of the current collector, and an electrode distortion-preventing layer formed on the other surface of the current collector to which no electrode mixture is applied. The one-sided electrode according to the present invention exhibits significantly reduced warping or curling after a rolling process and has the advantages of facilitating subsequent processes and enabling enhanced productivity

9. 发明公开

EP3343688A1 METHOD FOR MANUFACTURING BATTERY CELL INCLUDING REFERENCE ELECTRODE FOR MEASUREMENT OF RELATIVE ELECTRODE POTENTIAL AND BATTERY CELL MANUFACTURED THEREBY 有权转让
公开(公告)号：EP3343688A1
公开(公告)日：2018-07-04
申请号：EP16839499.7
申请日：2016-08-18
申请人： LG Chem, Ltd.
发明人： MIN, Ji Won , WOO, Sun Hwak , KIM, Seok Koo , OH, Sei Woon , LEE, Eun Ju
IPC分类号： H01M10/058 , H01M10/44 , H01M4/134 , H01M4/485 , H01M2/16 , H01M2/10 , H01M10/0525 , H01M4/38 , H01M4/04 , H01M4/02
CPC分类号： H01M2/1016 , H01M2/16 , H01M4/0445 , H01M4/134 , H01M4/382 , H01M4/485 , H01M10/0525 , H01M10/058 , H01M10/44 , H01M10/441 , H01M10/446 , H01M2004/021 , H01M2220/30
摘要： The present invention provides a method of manufacturing a battery cell, including: (i) manufacturing a reference cell composed of an electrolyte solution, n reference electrodes (n≥2) and a lithium electrode; (ii) charging the reference cell by applying a microcurrent, and then discharging the reference cell immediately thereafter; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes so that the reference electrodes have a plateau potential simultaneously; (iv) manufacturing n battery cells with the reference electrodes subjected to formation, an electrode assembly, the electrolyte solution and a battery case; and (v) measuring a relative potential of the reference electrode subjected to formation and a positive electrode, and a relative potential of the reference electrode and a negative electrode, in each of the battery cells.

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